JP2009115924A - Color liquid crystal display device assembly - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a color liquid crystal display device assembly in which the efficiency of effectively using a luminous flux from a light source is high, and the specification (e.g. thickness) of a phosphor layer is optimized, and in which a parallax and/or optical crosstalk are scarcely produced. <P>SOLUTION: In the color liquid crystal display device assembly equipped with a color liquid crystal display device comprising a front panel, a rear panel and a liquid crystal material and a surface light source device 60, the light source emits blue light (λ<SB>1</SB>), and a second primary color emission region 52 emitting green light (λ<SB>2</SB>) and a third primary color emission region 53 emitting red light (λ<SB>3</SB>) are provided on the liquid crystal material side of the front panel, wherein inequalities I<SB>21</SB>/I<SB>22</SB>≤0.1 and I<SB>31</SB>/I<SB>33</SB>≤0.1 are satisfied when light intensities of the spectrum of light emitted from the second primary color emission region 52 at wavelengths λ<SB>1</SB>and λ<SB>2</SB>are represented by I<SB>21</SB>and I<SB>22</SB>, and light intensities of the spectrum of light emitted from the third primary color emission region 53 at wavelengths λ<SB>1</SB>and λ<SB>3</SB>are represented by I<SB>31</SB>and I<SB>33</SB>. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a color liquid crystal display device assembly.

  As a color liquid crystal display device assembly, a transmissive color liquid crystal display in which a liquid crystal material is sandwiched between two panels laminated so that transparent glass substrates on which transparent electrodes, alignment films and the like are laminated face each other A color liquid crystal display assembly comprising a device and a planar light source device that is disposed below the color liquid crystal display and illuminates the color liquid crystal display is well known.

  As the planar light source device, two types of planar light source devices (backlights), that is, a direct type planar light source device disclosed in, for example, Japanese Utility Model Laid-Open No. 63-187120 and Japanese Patent Laid-Open No. 2002-277870, An edge light type (also called side light type) planar light source device disclosed in 2002-131552 is well known. As shown in the conceptual diagram of FIG. 21A, the direct-type planar light source device is disposed in the light source 600 disposed in the housing 602 and the portion of the housing positioned below the light source 600. A reflection member 603 that reflects light emitted from the light source 600 upward, and a housing opening located above the light source 600, passes through while diffusing the light emitted from the light source 600 and the light reflected from the reflection member 603. It is comprised from the diffuser plate 601 to be made. On the other hand, the edge light type planar light source device includes a light guide plate 701 and a light source 700 including a lamp disposed on a side surface of the light guide plate 701 as shown in a conceptual diagram in FIG. . A reflection member 702 is disposed below the light guide plate, and a diffusion sheet 703 and a prism sheet 704 are disposed above the light guide plate.

  The light source is composed of, for example, a cold cathode fluorescent lamp and emits white light. More specifically, in a cold cathode fluorescent lamp, a mixed rare gas such as neon gas or argon is sealed inside, or mercury is diffusely sealed. Then, the ultraviolet light from the mixed rare gas or mercury atom excited due to the glow discharge is applied to the inner surface of the glass tube constituting the fluorescent lamp, the red light emitting phosphor particles, the green light emitting phosphor particles, and the blue light emitting fluorescence. The body particles are excited, and white color is obtained by the emission color from these phosphor particles.

  Also, a color liquid crystal display device assembly that obtains an image by emitting red light and green light by exciting a phosphor layer with blue light emitted from a light source is known from, for example, Japanese Patent Application Laid-Open No. 2007-4099. is there. A color liquid crystal display device assembly disclosed in this patent publication is a color liquid crystal display device composed of a front panel and a rear panel, and a color liquid crystal display device disposed opposite to the rear panel. A planar light source device having a light source that illuminates from the rear panel side is provided. The phosphor layer is provided on the outer surface of the front panel, for example, or is provided on the outer surface of the rear panel facing the planar light source device.

Japanese Utility Model Sho 63-187120 JP 2002-277870 A JP2002-131552 JP2007-4099

  By the way, in a direct type planar light source device, white light is emitted from a fluorescent lamp. For example, when displaying a red color on a color liquid crystal display device, the white light is passed through a color filter to change the red color from the white light. The process of taking out is performed and the green and blue which comprise the white light radiated | emitted from the fluorescent lamp are discarded. Therefore, the effective use efficiency of the light flux emitted from the fluorescent lamp (the ratio of the light emitted from the color liquid crystal display device to the color liquid crystal display device out of the light flux emitted from the fluorescent lamp) is low and the light flux is effective. It is desired to further increase the utilization efficiency.

  Japanese Patent Application Laid-Open No. 2007-4099 makes no mention regarding optimization of the specification (for example, thickness) of a phosphor layer that is excited by blue light emitted from a light source and emits red light and green light. Absent. Furthermore, in the technique disclosed in Japanese Patent Application Laid-Open No. 2007-4099, since the phosphor layer is provided on the outer surface of the front panel, a liquid crystal material is sandwiched between the two panels. There is a problem that the distance from the liquid crystal cell to the phosphor layer is long and parallax is likely to occur. Alternatively, the phosphor layer is provided on the outer surface of the rear panel facing the planar light source device, so that light emitted from a certain phosphor layer enters the liquid crystal cell adjacent to the corresponding liquid crystal cell. Crosstalk may occur.

  Accordingly, an object of the present invention is to provide a high effective utilization efficiency of the light flux from the light source, to optimize the specification (for example, thickness) of the light emitting region (phosphor layer), and to achieve parallax and optical crossover. An object of the present invention is to provide a color liquid crystal display device assembly in which talk does not easily occur.

In order to achieve the above object, a color liquid crystal display device assembly according to the first or second aspect of the present invention is provided.
(A-1) a front panel including a transparent first electrode formed on a first surface of a first substrate having a first surface and a second surface;
(A-2) a rear panel including a transparent second electrode formed on a first surface of a second substrate having a first surface and a second surface; and
(A-3) a liquid crystal material disposed between the first surface of the first substrate and the first surface of the second substrate;
A color liquid crystal display device in which a plurality of pixels each including at least a first subpixel, a second subpixel, and a third subpixel are arranged in a two-dimensional matrix, and
(B) a planar light source device having a light source disposed on the rear panel side and illuminating the color liquid crystal display device from the rear panel side;
A color liquid crystal display device assembly comprising:
The light source emits first primary color light corresponding to the first primary color among the three primary colors of light composed of the first primary color, the second primary color, and the third primary color.

The color liquid crystal display device assembly according to the first aspect of the present invention includes:
(A) It is composed of second primary color luminescent particles that emit second primary color light corresponding to the second primary color, and is emitted from the light source and excited by the first primary color light that has passed through the second subpixel to emit second primary color light. A second primary color light emitting area,
(B) The first primary color light emitting particles that emit the third primary color light corresponding to the third primary color are emitted from the light source and excited by the first primary color light that has passed through the third sub-pixel to emit the third primary color light. A third primary color light emitting region, and
(C) a diffusion region that diffuses the first primary color light emitted from the light source and passed through the first subpixel;
With
The first primary color is blue, the second primary color is green, the third primary color is red,
₁ the wavelength of the first primary light lambda, ₂ the wavelength of the second primary color light lambda, the wavelength of the three primary colors and lambda _3, the light of the wavelength lambda ₁ in the spectrum of light emitted from the second primary light emitting regions The intensity is I ₂ (λ ₁ ), the light intensity at the wavelength λ ₂ is I ₂ (λ ₂ ), and the light intensity at the wavelength λ ₁ in the spectrum of the light emitted from the third primary color emission region is I ₃ (λ ₁ ) When the light intensity at the wavelength λ ₃ is I ₃ (λ ₃ ),
I ₂ (λ ₁ ) / I ₂ (λ ₂ ) ≦ 0.1 (1-1)
I ₃ (λ ₁ ) / I ₃ (λ ₃ ) ≦ 0.1 (1-2)
It is characterized by satisfying.

The color liquid crystal display device assembly according to the second aspect of the present invention is
(A) It is composed of second primary color light-emitting particles that emit second primary color light corresponding to the second primary color, and is excited by the first primary color light emitted from the light source to emit second primary color light. A second primary color light emitting area to be illuminated, and
(B) It comprises third primary color light emitting particles that emit light of the third primary color corresponding to the third primary color, and is excited by the first primary color light emitted from the light source to emit the third primary color light. A third primary color light emitting area to be illuminated;
With
The first primary color is blue, the second primary color is green, the third primary color is red,
₁ the wavelength of the first primary light lambda, ₂ the wavelength of the second primary color light lambda, the wavelength of the three primary colors and lambda _3, the light of the wavelength lambda ₁ in the spectrum of light emitted from the second primary light emitting regions The intensity is I ₂ (λ ₁ ), the light intensity at the wavelength λ ₂ is I ₂ (λ ₂ ), and the light intensity at the wavelength λ ₁ in the spectrum of the light emitted from the third primary color emission region is I ₃ (λ ₁ ) When the light intensity at the wavelength λ ₃ is I ₃ (λ ₃ ),
I ₂ (λ ₁ ) / I ₂ (λ ₂ ) ≦ 0.1 (2-1)
I ₃ (λ ₁ ) / I ₃ (λ ₃ ) ≦ 0.1 (2-2)
It is characterized by satisfying.

In the color liquid crystal display device assembly according to the first aspect of the present invention, the thickness of the second primary color light emitting region is determined so as to satisfy the equation (1-1), and the equation (1-2) is obtained. It is preferable to adopt a form in which the thickness of the third primary color light emitting region is determined so as to satisfy, and in the color liquid crystal display device assembly according to the second aspect of the present invention, the formula (2-1) It is preferable to adopt a configuration in which the thickness of the second primary color light emitting region is determined so as to satisfy (2), and the thickness of the third primary color light emitting region is determined so as to satisfy Equation (2-2). In these cases, the thickness t ₂ of the second primary light emitting region satisfying the equation (1-1) is, when converted in milligrams / cm ^2, 8 (mg / cm ²⁾ ≦ t ₂ ≦ 25 (milligrams / cm ²⁾ satisfies the thickness t ₃ of the third primary light emitting region satisfying the equation (1-2), when converted in milligrams / cm ^2, 1 (mg _{^{/ cm 2) ≦ t 3 ≦}} 10 (mg / cm ²⁾ it is desirable to adopt a configuration which satisfies, or alternatively, the thickness t ₂ of the second primary light emitting region satisfying the equation (2-1) is, when converted in milligrams / cm ^2, 2 When the thickness t ₃ of the third primary color light emitting region satisfying (milligram / cm ² ) ≦ t ₂ ≦ 10 (milligram / cm ² ) and satisfying the formula (2-2) is converted to milligram / cm ^2. 0.5 (milligram / cm ² ) ≦ t ₃ ≦ 5 (milligram / cm ² ) It is desirable to add a configuration.

In the color liquid crystal display device assembly according to the first aspect of the present invention including the preferred embodiment and configuration described above,
The second primary color light emitting region is disposed between a portion of the first surface of the first substrate corresponding to the second subpixel and a portion of the transparent first electrode,
The third primary color light emitting region is disposed between the portion of the first surface of the first substrate corresponding to the third subpixel and the portion of the transparent first electrode,
The diffusion region may be arranged between the portion of the first surface of the first substrate corresponding to the first subpixel and the portion of the transparent first electrode. Such a configuration is referred to as a “color liquid crystal display device assembly according to the first-A aspect of the present invention”.

  In the color liquid crystal display device assembly according to the first-A aspect of the present invention, the second primary color light emitting region, the third primary color light emitting region, the diffusion region, and the transparent first electrode It can be set as the structure by which the light reflection film which reflects 2 primary color light and 3rd primary color light is arrange | positioned. In this case, a first polarizing film (first polarizing plate) is preferably disposed between the light reflecting film and the transparent first electrode. The light reflecting film reflects the second primary color light and the third primary color light and transmits the first primary color light. As described above, by arranging the light reflecting film that reflects the second primary color light and the third primary color light, the second primary color light and the third primary color light emitted in the second primary color light emission region and the third primary color light emission region are obtained. The second subpixel and the third subpixel are not invaded, and the light is emitted from the second surface of the first substrate efficiently, and a bright and clear image can be obtained. The same applies to the following. More preferably, a smoothing film is disposed between the second primary color light emitting region, the third primary color light emitting region, the diffusion region, and the light reflecting film. By arranging the smoothing film in this way, it is possible to absorb the unevenness and thickness difference of the surface of the second primary color light emitting region, the third primary color light emitting region and the diffusion region, and more effectively the second primary color light and The third primary color light can be returned to the second primary color light emission region and the third primary color light emission region side.

  In the color liquid crystal display device assembly according to the 1st-A aspect of the present invention including the above preferred form and configuration, the second primary light emitting region, the third primary light emitting region, the diffusion region, the transparent first electrode, A first condensing member for condensing the first primary color light to the diffusion region, a second condensing member for condensing the second primary color light to the second primary color light emitting region, and a third primary color light. It is desirable to further include a third condensing member that condenses light to the third primary color light emitting region, and this can reliably prevent the occurrence of parallax and optical crosstalk. Here, the first condensing member, the second condensing member, and the third condensing member are configured by integrating a lens array, a lenticular lens, or a microlens array in which a large number of gradient index lenses are arranged. It can be. As a lens array in which a large number of gradient index lenses are arranged, a SELFOC lens array (registered trademark of Nippon Sheet Glass Co., Ltd.) is known.

  Alternatively, in the color liquid crystal display device assembly according to the 1st-A aspect of the present invention including the above-described preferred modes and configurations, the second primary color light emitting region, the third primary color light emitting region, the diffusion region, and the first A color filter may be disposed between the first surface of the substrate and the color purity of an image displayed on the color liquid crystal display device assembly can be further improved. And in this case, the 1st condensing member which condenses the 1st primary color light which passed the diffusion area to the color filter between the 2nd primary color light emission area, the 3rd primary color light emission area, and the diffusion area and the color filter, A second light condensing member that condenses the second primary color light emitted in the second primary color light emission region to the color filter, and a third light that condenses the third primary color light emitted in the third primary color light emission region to the color filter. It is desirable that the light collecting member is further provided, and this can reliably prevent the occurrence of parallax and optical crosstalk. Here, the first condensing member, the second condensing member, and the third condensing member are configured by integrating a lens array, a lenticular lens, or a microlens array in which a large number of gradient index lenses are arranged. It can be. A smoothing film may be disposed between the first light collecting member, the second light collecting member, the third light collecting member, and the color filter.

Alternatively, in the color liquid crystal display device assembly according to the first aspect of the present invention,
(C) a third substrate facing the front panel, having a first surface facing the front panel, and a second surface facing the first surface;
With
The second primary color light emitting region is disposed between a portion of the second surface of the first substrate corresponding to the second subpixel and a portion of the first surface of the third substrate,
The third primary color light emitting region is disposed between the portion of the second surface of the first substrate corresponding to the third subpixel and the portion of the first surface of the third substrate,
The diffusion region may be arranged between a portion of the second surface of the first substrate corresponding to the first subpixel and a portion of the first surface of the third substrate. Such a configuration is referred to as a “color liquid crystal display device assembly according to the first-B aspect of the present invention”.

  In the color liquid crystal display device assembly according to the first-B aspect of the present invention, the second primary color light emitting region, the third primary color light emitting region and the diffusion region are interposed between the second surface of the first substrate. The light reflecting film that reflects the second primary color light and the third primary color light may be arranged. In this case, a first polarizing film (first polarizing plate) is preferably disposed between the light reflecting film and the second surface of the first substrate. The light reflecting film reflects the second primary color light and the third primary color light and transmits the first primary color light. More preferably, a smoothing film is disposed between the second primary color light emitting region, the third primary color light emitting region, the diffusion region, and the light reflecting film. By arranging the smoothing film in this way, it is possible to absorb the unevenness and thickness difference of the surface of the second primary color light emitting region, the third primary color light emitting region and the diffusion region, and more effectively the second primary color light and The third primary color light can be returned to the second primary color light emission region and the third primary color light emission region side.

  In the color liquid crystal display device assembly according to the 1st-B aspect of the present invention including the above-mentioned preferable modes and configurations, the second primary color light emitting region, the third primary color light emitting region, the diffusion region, and the first substrate A first condensing member that condenses the first primary color light to the diffusion region, a second condensing member that condenses the first primary color light to the second primary color light emitting region, and the first It is desirable to further include a third condensing member that condenses the primary color light into the third primary color light emitting region, thereby reliably preventing the occurrence of parallax and optical crosstalk. Can do. Here, the first condensing member, the second condensing member, and the third condensing member are configured by integrating a lens array, a lenticular lens, or a microlens array in which a large number of gradient index lenses are arranged. It can be.

  Alternatively, in the color liquid crystal display device assembly according to the 1st-B aspect of the present invention including the above preferred form and configuration, the second primary color light emitting region, the third primary color light emitting region, the diffusion region, and the third A color filter may be disposed between the first surface of the substrate and the color purity of an image displayed on the color liquid crystal display device assembly can be further improved. In this case, between the second primary color light emitting region, the third primary color light emitting region, the diffusion region, and the second surface of the first substrate, the first light collecting member that condenses the first primary color light to the diffusion region. A second condensing member for condensing the first primary color light to the second primary color light emitting region, and a third condensing member for condensing the first primary color light to the third primary color light emitting region. It is desirable to have a configuration, which can reliably prevent the occurrence of parallax and optical crosstalk. Here, the first condensing member, the second condensing member, and the third condensing member are configured by integrating a lens array, a lenticular lens, or a microlens array in which a large number of gradient index lenses are arranged. It can be. A smoothing film may be disposed between the first light collecting member, the second light collecting member, the third light collecting member, and the color filter.

  Further, in the color liquid crystal display device assembly according to the 1st-B aspect of the present invention including the above-described various preferable forms and configurations, the thickness of the first substrate is 0.2 mm or less, preferably, for example, 0. It is desirable that the thickness is 05 mm to 0.1 mm. By reducing the thickness of the first substrate in this way, it is possible to more reliably prevent the occurrence of optical crosstalk such that the light emitted from the subpixel (liquid crystal cell) enters the light emitting region adjacent to the corresponding light emitting region. Can be prevented.

  In the color liquid crystal display device assembly according to the first aspect of the present invention including the various preferable modes and configurations described above, the liquid crystal control mode can be essentially any liquid crystal control mode. A control mode having a wide viewing angle characteristic such as an IPS mode or a VA mode is not particularly required. For example, an inexpensive TN control mode or STN control based on a structure such as a TN (Twisted Nematic) array or an STN (Super Twisted Nematic) array. A mode can be used.

On the other hand, in the color liquid crystal display device assembly according to the second aspect of the present invention, including the preferred form and configuration described above,
The second primary color light emitting region is disposed between the portion of the first surface of the second substrate corresponding to the second subpixel and the portion of the transparent second electrode,
The third primary color light emitting region may be arranged between the portion of the first surface of the second substrate corresponding to the third subpixel and the portion of the transparent second electrode. Note that such a configuration is referred to as “a color liquid crystal display device assembly according to an embodiment 2-A of the present invention” for convenience.

In the color liquid crystal display device assembly according to the 2-A aspect of the present invention,
(C) a second light condensing member that condenses the second primary color light emitted in the second primary color light emitting region to the second subpixel;
(D) a third condensing member that condenses the third primary color light emitted in the third primary color light emitting region to the third subpixel;
Is further provided,
The second light collecting member is disposed between the second primary color light emitting region and the transparent second electrode,
The 3rd condensing member can be set as the structure arrange | positioned between the 3rd primary color light emission area | region and the transparent 2nd electrode.

  In the color liquid crystal display device assembly according to the 2-A aspect of the present invention, the first primary color light emitted from the light source is disposed between the first surface of the second substrate and the transparent second electrode. It is preferable to further include a first light collecting member that condenses the light to the first subpixel. In this case, the first light collecting member, the second light collecting member, and the third light collecting member are integrated with a lens array, a lenticular lens, or a microlens array in which a large number of gradient index lenses are arranged. It can be set as the structure which consists of. In addition, a second polarizing film (second polarizing plate) may be disposed between the first light collecting member, the second light collecting member, the third light collecting member, and the transparent second electrode. preferable. If a smoothing film is disposed between the first light collecting member, the second light collecting member, the third light collecting member, and the second polarizing film, the first light collecting member, the second light collecting member, and the third light collecting member. Differences in unevenness and thickness of the member surface can be absorbed.

  Further, in the color liquid crystal display device assembly according to the 2-A aspect of the present invention including the above-described various preferred forms and configurations, the second primary color light emitting region, the third primary color light emitting region, and the first surface of the second substrate. It is desirable that a light reflection film for reflecting the second primary color light and the third primary color light is disposed between the first and second primary color lights. The light reflecting film reflects the second primary color light and the third primary color light and transmits the first primary color light. By disposing the light reflecting film, the second primary color light and the third primary color light can be effectively returned to the second primary color light emission region and the third primary color light emission region side. A light reflecting film is also provided between the first surface of the second substrate and a region (referred to as “first primary color light passage region”) through which the first primary color light emitted from the light source passes to the first subpixel. Arrangement is preferable from the viewpoint of simplifying the structure.

  Moreover, in the color liquid crystal display device assembly according to the second-A aspect of the present invention including the various preferable modes and configurations described above, the gap between the first surface of the first substrate and the transparent first electrode. The color filter can be arranged, and this can further improve the color purity of the image displayed on the color liquid crystal display device assembly.

In the color liquid crystal display device assembly according to the second aspect of the present invention,
(C) a third substrate disposed between the rear panel and the planar light source device and having a first surface facing the rear panel and a second surface facing the planar light source device;
With
The second primary color light emitting region is disposed between a portion of the first surface of the third substrate corresponding to the second subpixel and a portion of the second surface of the second substrate,
The third primary color light emitting region may be configured to be disposed between the portion of the first surface of the third substrate corresponding to the third subpixel and the portion of the second surface of the second substrate. Such a configuration is referred to as “a color liquid crystal display device assembly according to a second 2-B aspect of the present invention” for convenience.

In the color liquid crystal display device assembly according to the 2-B aspect of the present invention,
(C) a second light condensing member that condenses the second primary color light emitted in the second primary color light emitting region to the second subpixel;
(D) a third condensing member that condenses the third primary color light emitted in the third primary color light emitting region to the third subpixel;
With
The second light collecting member is disposed between the first surface of the third substrate and the second surface of the second substrate,
The 3rd condensing member can be set as the structure arrange | positioned between the 1st surface of a 3rd board | substrate, and the 2nd surface of a 2nd board | substrate.

  In the color liquid crystal display device assembly according to the 2-B aspect of the present invention including the above-mentioned preferred modes and configurations, the color liquid crystal display device assembly is disposed between the first surface of the third substrate and the second surface of the second substrate. It is preferable to further include a first condensing member that condenses the first primary color light emitted from the light source onto the first subpixel. In this case, the first light collecting member, the second light collecting member, and the third light collecting member are integrated with a lens array, a lenticular lens, or a microlens array in which a large number of gradient index lenses are arranged. It can be set as the structure which consists of. Further, a second polarizing film (second polarizing plate) is disposed between the first light collecting member, the second light collecting member, the third light collecting member, and the second surface of the second substrate. Preferably it is. Moreover, if a smoothing film is arrange | positioned between the 1st condensing member, the 2nd condensing member, the 3rd condensing member, and the 2nd polarizing film, the 1st condensing member, the 2nd condensing member, and the 3rd Unevenness on the surface of the light collecting member can be absorbed.

  In the color liquid crystal display device assembly according to the second 2-B aspect of the present invention including the various preferable modes and configurations described above, the second primary color light emitting region, the third primary color light emitting region, and the first surface of the third substrate. It is desirable that a light reflection film for reflecting the second primary color light and the third primary color light is disposed between the first and second primary color lights. The light reflecting film reflects the second primary color light and the third primary color light and transmits the first primary color light. By disposing the light reflecting film, the second primary color light and the third primary color light can be effectively returned to the second primary color light emission region and the third primary color light emission region side. In addition, it is preferable from a viewpoint of the simplification of a structure to arrange | position a light reflection film also between the 1st primary color light passage area | region and the 1st surface of a 3rd board | substrate.

  Further, in the color liquid crystal display device assembly according to the second 2-B aspect of the present invention including the above-mentioned various preferred forms and configurations, the thickness of the second substrate is 0.2 mm or less, preferably, for example, 0. It is desirable that the thickness is 05 mm to 0.1 mm. In this way, by reducing the thickness of the second substrate, light emitted from the second primary color emission region and the third primary color emission region is incident on the subpixel (liquid crystal cell) adjacent to the corresponding subpixel (liquid crystal cell). The occurrence of optical crosstalk, such as, can be more reliably prevented.

  Further, in the color liquid crystal display device assembly according to the second-B aspect of the present invention including the various preferable modes and configurations described above, between the first surface of the first substrate and the transparent first electrode. It is preferable that a color filter is disposed, whereby the color purity of an image displayed on the color liquid crystal display device assembly can be further improved.

  In the color liquid crystal display device assembly according to the second aspect of the present invention including the various preferable modes and configurations described above, the liquid crystal control mode can be essentially any liquid crystal control mode. Among them, it is preferable to use a control mode having a wide viewing angle characteristic such as an IPS mode or a VA mode. In addition, the first primary color light passage region may be filled with, for example, a transparent resin, or nothing may be performed.

In the color liquid crystal display device assembly according to the first aspect or the second aspect of the present invention including the various preferable modes and configurations described above, the light source is blue light (for example, wavelength) as the first primary color light. (λ ₁ : wavelength of any value within the range of 440 nm to 460 nm), a light emitting diode, a fluorescent lamp, an electroluminescence light emitting device, or a plasma display device.

  The color liquid crystal display device assembly according to the first aspect or the second aspect of the present invention including the various preferable modes and configurations described above (hereinafter collectively referred to as “the color liquid crystal display device set of the present invention”). 1st sub-pixel (corresponding to the first liquid crystal cell), the second sub-pixel (corresponding to the second liquid crystal cell), and the third sub-pixel (corresponding to the third liquid crystal cell). ) Are composed of a transparent first electrode, a transparent second electrode, and a liquid crystal material sandwiched between the transparent first electrode and the transparent second electrode.

In general, the second primary light emitting regions, As you increase the thickness of the third primary light emitting _{regions, I 2 (λ 1) /} I 2 (λ 2) and the value of _{I 3 (λ 1) / I} 3 (λ _Although the value of ₃ ) decreases, the values of I ₂ (λ ₂ ) and I ₃ (λ ₃ ) also decrease, and the luminance tends to decrease. Therefore, the thickness of the second primary color light emitting region is optimized based on the values of I ₂ (λ ₁ ) / I ₂ (λ ₂ ) and I ₂ (λ ₂ ), and I ₃ (λ ₁ ) / based on the value of I ₃ values and I ₃ (lambda ₃₎ of (lambda _3), may be Hakare optimization of the thickness of the third primary light emitting regions.

  In the color liquid crystal display device assembly of the present invention, the size of the diffusion region or the first primary color light passage region and the size of the portion through which the first sub-pixel actually transmits light may be the same size, The former may be large, and the latter may be large. Further, the outer shape of the diffusion region or the first primary color light passage region and the outer shape of the portion through which the first subpixel actually transmits light may be the same shape or may be similar. The shape may be different. The size of the second primary color light emitting region and the size of the portion through which the second subpixel actually transmits light may be the same size, the former may be larger, or the latter may be larger. Furthermore, the outer shape of the second primary color light emitting region and the outer shape of the portion through which the second subpixel actually transmits the first primary color light may be the same or similar, Different shapes may be used. The size of the third primary color light emitting region and the size of the portion through which the third subpixel actually transmits light may be the same size, the former may be larger, or the latter may be larger. Furthermore, the outer shape of the third primary color light-emitting area and the outer shape of the portion through which the third sub-pixel actually transmits light may be the same shape, similar shapes, or different shapes. There may be.

In the color liquid crystal display device assembly of the present invention, as a first substrate, a second substrate, and a third substrate, a glass substrate, a glass substrate having an insulating film formed on the surface, a quartz substrate, and a quartz having an insulating film formed on the surface Examples of the substrate include a semiconductor substrate having an insulating film formed on the surface. From the viewpoint of reducing the manufacturing cost, it is preferable to use a glass substrate or a glass substrate having an insulating film formed on the surface. As a glass substrate, high strain point glass, soda glass (Na ₂ O · CaO · SiO ₂ ), borosilicate glass (Na ₂ O · B ₂ O ₃ · SiO ₂ ), forsterite (2MgO · SiO ₂ ), lead glass (Na ₂ O · PbO · SiO ₂ ) and alkali-free glass can be exemplified. Alternatively, examples include polymethyl methacrylate (polymethyl methacrylate, PMMA), polyvinyl alcohol (PVA), polyvinyl phenol (PVP), polyether sulfone (PES), polyimide, polycarbonate (PC), and polyethylene terephthalate (PET). An organic polymer (having a form of a polymer material such as a flexible plastic film, plastic sheet, or plastic substrate made of a polymer material) can be given.

  In the color liquid crystal display device assembly of the present invention, the transparent first electrode (also referred to as a common electrode) and the transparent second electrode (also referred to as a pixel electrode) may be made of a known material such as ITO, for example. The pattern of the electrode and the transparent second electrode may be determined based on specifications required for the color liquid crystal display device.

  In the color liquid crystal display device assembly of the present invention, one pixel may include at least the first subpixel, the second subpixel, and the third subpixel, and the fourth subpixel, the fifth subpixel, .. May be further provided. The color to be displayed by the fourth sub-pixel, the fifth sub-pixel, etc. may be determined based on the specifications required for the color liquid crystal display device. For example, white for improving luminance, color reproduction range For example, yellow, cyan, and magenta colors can be exemplified to enlarge the complementary color for enlargement and the color reproduction range. Examples of the subpixel arrangement state include a delta arrangement, a stripe arrangement, a diagonal arrangement, and a rectangle arrangement. In the color liquid crystal display device assembly according to the 1-A aspect of the present invention, the i-th light emitting region (i = 4, 5,...) Corresponds to the i-th subpixel. An i-th sub-pixel is disposed between the first surface portion of one substrate and the transparent first electrode portion, and is composed of luminescent particles that emit light corresponding to the i-th color. Is emitted by the first primary color light that has passed through and emits light corresponding to the i-th color. In the color liquid crystal display device assembly according to the 1-B aspect of the present invention, the i-th light emitting region (i = 4, 5,...) Corresponds to the i-th subpixel. The first substrate is disposed between the second surface portion of the first substrate and the first surface portion of the third substrate, and is composed of luminescent particles that emit light corresponding to the i-th color. And is excited by the first primary color light that has passed through the sub-pixels to emit light corresponding to the i-th color. Alternatively, in the color liquid crystal display device assembly according to the 2-A aspect of the present invention, the i-th light emitting region (i = 4, 5,...) Is provided in the i-th subpixel. The first primary color emitted from the light source, which is formed between the corresponding first surface portion of the second substrate and the transparent second electrode portion, is composed of luminescent particles that emit light corresponding to the i-th color. It is excited by light to emit light corresponding to the i-th color and illuminates the i-th sub-pixel. Alternatively, in the color liquid crystal display device assembly according to the 2-B aspect of the present invention, the i-th light emitting region (i = 4, 5,...) Is provided in the i-th subpixel. Corresponding to the first surface portion of the corresponding third substrate and the second surface portion of the second substrate, it is composed of luminescent particles that emit light corresponding to the i-th color and emitted from the light source. It is excited by the first primary color light to emit light corresponding to the i-th color, and illuminates the i-th sub-pixel.

  In the color liquid crystal display assembly of the present invention, the light source is composed of, for example, a light emitting diode (LED) that emits blue light as the first primary color light, as described above. It can be composed of a light emitting diode. Further, for example, as a fluorescent lamp that emits blue light as the first primary color light, a cold cathode fluorescent lamp (CCFL), a hot cathode fluorescent lamp (HCFL), or an external electrode fluorescent lamp (EEFL, External). Electrode Fluorescent Lamp). Further, for example, as an electroluminescence light emitting device that emits blue light as the first primary color light, an organic electroluminescence light emitting device or an inorganic electroluminescence light emitting device can be exemplified. The number of light emitting diodes (LEDs), fluorescent lamps, and electroluminescent light emitting devices is essentially arbitrary, and may be determined based on specifications required for the planar light source device. A semiconductor laser may be used instead of the light emitting diode.

  The light emitting diode may have a so-called face-up structure or a flip chip structure. That is, the light-emitting diode includes a substrate and a light-emitting layer formed on the substrate, and may have a structure in which light is emitted from the light-emitting layer to the outside, or light from the light-emitting layer passes through the substrate. It is good also as a structure radiate | emitted outside. More specifically, the light emitting diode is formed on, for example, a first compound semiconductor layer formed of a compound semiconductor layer having a first conductivity type (for example, n-type) formed on a substrate, and the first compound semiconductor layer. The active layer has a stacked structure of a second compound semiconductor layer made of a compound semiconductor layer having a second conductivity type (for example, p-type) formed on the active layer, and is electrically connected to the first compound semiconductor layer A first electrode and a second electrode electrically connected to the second compound semiconductor layer are provided. The layer constituting the light emitting diode may be made of a known compound semiconductor material depending on the emission wavelength.

In the color liquid crystal display device assembly of the present invention, when the second primary color light emitting particles are, for example, phosphor particles that emit green light, as the green light emitting phosphor, (ME: Eu) Ga ₂ S ₄ , (M : RE) _x (Si, Al) ₁₂ (O, N) ₁₆ , (M: Tb) _x (Si, Al) ₁₂ (O, N) ₁₆ , (M: Yb) _x (Si, Al) ₁₂ (O , N) ₁₆ , LaPO ₄ : Ce, Tb, BaMgAl ₁₀ O ₁₇ : Eu, Mn, Zn ₂ SiO ₄ : Mn, MgAl ₁₁ O ₁₉ : Ce, Tb, Y ₂ SiO ₅ : Ce, Tb, MgAl ₁₁ O ₁₉ : CE, Tb, Mn, (Sr, Ba) ₂ SiO ₄ : Eu. When the third primary color light emitting particle is, for example, a phosphor particle that emits red light, as the red light emitting phosphor, (ME: Eu) S, (M: Sm) _x (Si, Al) ₁₂ (O, N ₁₆ , ME ₂ Si ₅ N ₈ : Eu, (Ca: Eu) SiN ₂ , (Ca: Eu) AlSiN ₃ , Y ₂ O ₃ : Eu, YVO ₄ : Eu, Y (P, V) O ₄ : Eu 3.5 MgO.0.5 MgF ₂ .Ge ₂ : Mn, CaSiO ₃ : Pb, Mn, Mg ₆ AsO ₁₁ : Mn, (Sr, Mg) ₃ (PO ₄ ) ₃ : Sn, La ₂ O ₂ S: Eu , Y ₂ O ₂ S: Eu. Here, “ME” means at least one atom selected from the group consisting of Ca, Sr and Ba, and “M” means at least one type selected from the group consisting of Li, Mg and Ca. It means an atom and “RE” means Tb and Yb. In some cases, for example, a structure emitting cyan may be used, and in this case, green phosphor particles (for example, LaPO ₄ : Ce, Tb, BaMgAl ₁₀ O ₁₇ : Eu, Mn, Zn ₂ SiO ₄ : _{Mn, MgAl 11 O 19: Ce} , Tb, Y 2 SiO 5: Ce, Tb, MgAl 11 O 19: CE, Tb, Mn) and blue light emitting phosphor particles _{(e.g., BaMgAl 10 O 17: Eu,} BaMg 2 Al ₁₆ O ₂₇ : Eu, Sr ₂ P ₂ O ₇ : Eu, Sr ₅ (PO ₄ ) ₃ Cl: Eu, (Sr, Ca, Ba, Mg) ₅ (PO ₄ ) ₃ Cl: Eu, CaWO ₄ , CaWO ₄ : Pb) may be used.

  For the second primary color emission region and the third primary color emission region made of phosphor particles, a phosphor particle composition prepared from the phosphor particles is used, for example, a red photosensitive phosphor particle composition (red emission fluorescence). Body slurry) is applied to the entire surface, exposed and developed to form a third primary color light emitting region comprising a red light emitting phosphor layer. Then, the step of forming the third primary color light emitting region is repeated as necessary until the third primary color light emitting region has a desired thickness. Next, a green photosensitive phosphor particle composition (green light-emitting phosphor slurry) is applied to the entire surface, exposed, and developed to form a second primary color light-emitting region composed of a green light-emitting phosphor layer. Then, the step of forming the second primary color light emitting region is repeated as necessary until the second primary color light emitting region has a desired thickness. Note that the order of forming the third primary color light emitting region and the second primary color light emitting region may be reversed. Alternatively, the second primary color light emitting region and the third primary color light emitting region may be formed by a screen printing method, an ink jet printing method, a float coating method, a sedimentation coating method, a phosphor film transfer method, or the like.

  However, the material constituting the second primary color light emitting region and the third primary color light emitting region is not limited to the light emitting fluorescent particles. For example, in the indirect transition type silicon-based material, the carrier can efficiently emit light as in the direct transition type. Quantum well structures such as a two-dimensional quantum well structure, a one-dimensional quantum well structure (quantum wire), and a zero-dimensional quantum well structure (quantum dot) using the quantum effect to localize the wave function of the carrier It is also known that the rare earth atoms added to the semiconductor material emit light sharply due to the transition in the shell, and the luminescent particles to which such a technique is applied can also be mentioned.

  In the color liquid crystal display device assembly according to the first aspect of the present invention, the diffusion region is formed, for example, by dispersing a light diffusing agent composed of fine particles in a transparent binder resin, such as a screen printing method or an ink jet printing method. It can be formed by various coating methods. The light diffusing agent is a particle having a property of diffusing light from a light source, and is composed of inorganic material particles or organic material particles. Specific examples of the inorganic material constituting the inorganic material particles include silica, aluminum hydroxide, aluminum oxide, titanium oxide, zinc oxide, barium sulfate, magnesium silicate, and a mixture thereof. On the other hand, as resins constituting organic material particles, acrylic resins, acrylonitrile resins, polyurethane resins, polyvinyl chloride resins, polystyrene resins, polyacrylonitrile resins, polyamide resins, polysiloxane resins, melamine resins Can be illustrated. Examples of the shape of the light diffusing agent include a spherical shape, a cubic shape, a needle shape, a rod shape, a spindle shape, a plate shape, a scale shape, and a fiber shape. In some cases, the diffusion region may be constituted by a light diffusion sheet (light diffusion film). The light diffusing sheet (light diffusing film) is provided between the first surface of the first substrate or the third substrate and the second primary color light emitting region, the first surface of the first substrate or the third substrate and the third primary color light emitting. You may extend even between areas. The transparent binder resin may be appropriately selected from known thermosetting resins, ultraviolet curable resins, and thermoplastic resins.

  The light reflecting film is composed of, for example, a silicon oxide film, a niobium oxide film, or a multilayer laminated film composed of a low refractive index material and a high refractive index material (for example, a multilayer laminated film composed of a silicon oxide film and a niobium oxide film). For example, it can be formed by physical vapor deposition methods such as various coating methods and sputtering methods, or may be arranged by laminating film-like light reflecting films. The smoothing film can be composed of, for example, an acrylic resin or a silicone resin. For example, the smoothing film can be formed by various coating methods, or can be arranged by laminating a film-like smoothing film. An antireflection film (antireflection film, AR film) may be bonded to the outermost surface of the exposed front panel or third substrate.

  The color filter generally includes a black matrix (for example, made of chromium) for shielding a gap between colored patterns, and a first primary color, a second primary color, and a third primary color (for example, blue and green) facing each subpixel. , Red) colored layer, and is produced by a dyeing method, a pigment dispersion method, a printing method, an electrodeposition method or the like. The colored layer is made of, for example, a resin material, or is colored with a pigment. The pattern of the colored layer may be matched with the subpixel arrangement state (arrangement pattern), and examples thereof include a delta arrangement, a stripe arrangement, a diagonal arrangement, and a rectangle arrangement.

  In the color liquid crystal display device assembly according to the first aspect of the present invention, a region between the second primary color light emission region and the third primary color light emission region, a region between the diffusion region and the second primary color light emission region, and a diffusion region A light absorbing layer (so-called black matrix) may be formed in a region between the first primary color light emitting region and the color liquid crystal display device assembly according to the second aspect of the present invention. A region between the two primary color light emitting regions and the third primary color light emitting region, a region between the first primary color light passing region and the second primary color light emitting region, and a region between the first primary color light passing region and the third primary color light emitting region. In the region, a light absorption layer (black matrix layer) may be formed. As the material constituting the light absorption layer, it is preferable to select a material that absorbs 99% or more of the first primary color light, the second primary color light, and the third primary color light. Examples of such materials include materials such as carbon, metal thin films, heat resistant organic resins, and glass pastes. Specific examples include photosensitive polyimide resins, chromium oxide, and chromium oxide / chromium laminated films. be able to. The light absorption layer depends on the material used, for example, a combination of a vacuum deposition method, a sputtering method and an etching method, a combination of a vacuum deposition method, a sputtering method, a spin coating method and a lift-off method, a screen printing method, a lithography technique, etc. Thus, it can be formed by an appropriately selected method.

  In the color liquid crystal display device in the color liquid crystal display device assembly of the present invention, the first alignment film is formed on the transparent first electrode, and the second alignment film is formed on the entire surface including the transparent second electrode. ing. In addition, a switching element is formed on the first surface of the second substrate, and conduction / non-conduction of the transparent second electrode is controlled by the switching element. Various members constituting the color liquid crystal display device can be composed of known members and materials. Examples of the switching element include a three-terminal element such as a MOS type FET and a thin film transistor (TFT) formed on a single crystal silicon semiconductor substrate, and a two-terminal element such as an MIM element, a varistor element, and a diode. The driving method of the liquid crystal material may be a driving method suitable for the liquid crystal material to be used.

  In the color liquid crystal display device assembly of the present invention, examples of the planar light source device include a direct-type planar light source device and an edge light type (side light type) planar light source device. The planar light source device may be configured to further include an optical function sheet group such as a diffusion sheet, a prism sheet, and a polarization conversion sheet, and a reflection sheet. The optical function sheet group may be configured from various sheets that are spaced apart from each other, or may be stacked and integrated. The light diffusing plate and the optical function sheet group are disposed between the planar light source device and the color liquid crystal display device. As a material constituting the light diffusion plate, a cycloolefin resin such as “ZEONOR” manufactured by Nippon Zeon Co., Ltd., which is a polycarbonate resin (PC), polystyrene resin (PS), methacrylic resin, or norbornene polymer resin. Can be mentioned.

  In the direct-type planar light source device, the planar light source device can be composed of a plurality of planar light source units. In other words, the plurality of planar light source units have P × Q display area units corresponding to the P × Q display area units when it is assumed that the display area of the color liquid crystal display device is divided into P × Q virtual display area units. The light sources provided in the planar light source unit can be configured to be individually controlled. Such a configuration may be referred to as a “divided drive type planar light source device” for convenience.

  In a split drive type planar light source device, when the light source is composed of light emitting diodes, a plurality of light emitting diodes are arranged and arranged in a casing constituting the planar light source device. One planar light source unit is provided with one or a plurality of light emitting diodes. It is desirable to provide an optical sensor for measuring the light emission state of the light source (specifically, for example, the luminance of the light source, or the chromaticity of the light source, or the luminance and chromaticity of the light source). The number of photosensors may be at least one, but the configuration in which one photosensor is arranged in one planar light source unit reliably measures the light emission state of each planar light source unit. It is desirable from the viewpoint of doing. As the optical sensor, a known photodiode or CCD device can be cited.

  The planar light source unit and the planar light source unit may be separated by a partition wall. By the partition, transmission of light emitted from the light source constituting the planar light source unit is controlled, or reflection is controlled, or transmission and reflection are controlled. In this case, one planar light source unit is surrounded by four partition walls, or is surrounded by one side surface and three partition walls of the casing constituting the planar light source device. Are surrounded by two side surfaces and two partition walls. Examples of the material constituting the partition include acrylic resin, polycarbonate resin, and ABS resin. A light diffusion reflection function may be imparted to the partition wall surface, or a specular reflection function may be imparted. In order to impart a light diffusing and reflecting function to the partition wall surface, irregularities may be formed on the partition wall surface based on a sandblasting method, or a film (light diffusion film) having irregularities may be attached to the partition wall surface. In addition, in order to impart a specular reflection function to the partition wall surface, a light reflection film may be attached to the partition wall surface, or a light reflection layer may be formed on the partition wall surface by plating, for example.

  In the split driving method, the light transmittance (also referred to as aperture ratio) Lt of the subpixel, the luminance (display luminance) y of the portion of the display area corresponding to the subpixel, and the luminance (light source luminance) of the planar light source unit ) Define Y as follows:

Y ₁ ... Is the maximum luminance of the light source luminance, for example, and may be hereinafter referred to as the light source luminance and the first specified value.
Lt ₁ ... Is the maximum value of the light transmittance (aperture ratio) of the sub-pixels in the display area unit, for example, and may be hereinafter referred to as light transmittance / first specified value.
Lt ₂ ... Maximum value of drive signal values input to the drive circuit to drive all the pixels constituting the display area unit when the light source brightness is the light source brightness / first specified value Y _1. The sub-pixel light transmittance (aperture ratio) when it is assumed that a control signal corresponding to a drive signal having a value equal to the value within the display region unit / drive signal maximum value x _U-max is supplied to the sub-pixel. In the following, the light transmittance may be referred to as a second specified value. In addition, 0 ≦ Lt ₂ ≦ Lt ₁
y ₂ ... obtained when the light source luminance is assumed to be the light source luminance and the first specified value Y ₁ , and the light transmittance (aperture ratio) of the subpixel is the light transmittance and the second specified value Lt _2. The display brightness may be referred to as display brightness / second specified value hereinafter.
Y ₂ ... It is assumed that a control signal corresponding to a drive signal having a value equal to the drive signal maximum value x _U-max is supplied to the sub-pixel in the display area unit, and the light of the sub-pixel at this time Assuming that the transmittance (aperture ratio) is corrected to the light transmittance / first specified value Lt ₁ , the surface light source unit for setting the luminance of the sub-pixel to the display luminance / second specified value (y ₂ ). Light source brightness. However, the light source luminance Y ₂ may be corrected in consideration of the influence of the light source luminance of each planar light source unit on the light source luminance of other planar light source units.

When the planar light source device is divided and driven, it is assumed that a control signal corresponding to a drive signal having a value equal to the drive area maximum value x _U-max in the display area unit is supplied to the pixel (light transmission) The luminance of the light source constituting the planar light source unit corresponding to the display area unit is controlled by the drive circuit so that the ratio, the display luminance at the first specified value Lt _1, and the second specified value y ₂ ) are obtained. thereof include, for example, the light transmittance of the subpixels (aperture ratio), for example, as the display luminance y ₂ obtained when the light transmittance · first specified value Lt _1, by controlling the light source luminance Y ₂ (For example, it may be reduced). That is, for example, the light source luminance Y ₂ of the planar light source unit may be controlled for each frame (referred to as an image display frame for convenience) in the image display of the color liquid crystal display device so as to satisfy the following formula (A). . Note that Y ₂ ≦ Y ₁ .

_{Y 2 · Lt 1 = Y 1} · Lt 2 (A)

  The drive circuit includes, for example, a planar light source device control circuit and a surface composed of a pulse width modulation (PWM) signal generation circuit, a duty ratio control circuit, a light emitting diode (LED) drive circuit, an arithmetic circuit, a storage device (memory), and the like. The light source unit driving circuit and a liquid crystal display device driving circuit including a known circuit such as a timing controller can be used.

  When the light emitted from the light emitting diode is directly incident on the color liquid crystal display device located above, that is, when the light is emitted from the light emitting diode exclusively along the z-axis direction, the luminance is given to the planar light source device. Unevenness may occur. As a means for avoiding the occurrence of such a phenomenon, a light emitting diode assembly in which a light extraction lens is attached to a light emitting diode is used as a light source, and a part of the light emitted from the light emitting diode is reflected on the top surface of the light extraction lens. And a two-dimensional direction emission configuration in which the light is totally reflected and emitted mainly in the horizontal direction of the light extraction lens.

  In the edge light type planar light source device, a light guide plate is provided. Here, examples of the material constituting the light guide plate include glass and plastic materials (for example, PMMA, polycarbonate resin, acrylic resin, amorphous polypropylene resin, and styrene resin including AS resin). it can. The light guide plate includes a first surface (bottom surface), a second surface (top surface) facing the first surface, a first side surface, a second side surface, a third side surface facing the first side surface, and a second side surface. It has the 4th side which opposes. As a more specific shape of the light guide plate, a wedge-shaped truncated quadrangular pyramid shape can be cited as a whole, and in this case, two opposing side surfaces of the truncated quadrangular pyramid correspond to the first surface and the second surface. The bottom surface of the truncated quadrangular pyramid corresponds to the first side surface. And it is desirable for the surface part of a 1st surface (bottom surface) to provide the convex part and / or the recessed part. The first primary color light is incident from the first side surface of the light guide plate, and the first primary color light is emitted from the second surface (top surface) toward the color liquid crystal display device. Here, the second surface of the light guide plate may be smooth (that is, may be a mirror surface) or may be provided with a blast texture having a diffusion effect (that is, a fine uneven surface).

  It is desirable that the first surface (bottom surface) of the light guide plate is provided with a convex portion and / or a concave portion. That is, it is desirable that the first surface of the light guide plate is provided with a convex portion, or a concave portion, or an uneven portion. When the concavo-convex portion is provided, the concave portion and the convex portion may be continuous or discontinuous. The convex portion and / or concave portion provided on the first surface of the light guide plate is a continuous convex portion and / or concave portion extending along a direction forming a predetermined angle with the first primary color light incident direction to the light guide plate. It can be. In such a configuration, as a continuous convex shape or concave cross-sectional shape when the light guide plate is cut in a virtual plane perpendicular to the first surface in the first primary color light incident direction to the light guide plate, Any smooth curve including triangles; any square including square, rectangle, trapezoid; any polygon; circle, ellipse, parabola, hyperbola, catenary, etc. can be exemplified. The direction forming a predetermined angle with the first primary color light incident direction on the light guide plate means a direction of 60 degrees to 120 degrees when the first primary color light incident direction on the light guide plate is 0 degrees. The same applies to the following. Alternatively, the convex portion and / or the concave portion provided on the first surface of the light guide plate is a discontinuous convex portion and / or extending along a direction forming a predetermined angle with the first primary color light incident direction to the light guide plate. It can be set as the structure which is a recessed part. In such a configuration, as a discontinuous convex shape or concave shape, a pyramid, a cone, a cylinder, a polygonal column including a triangular column or a quadrangular column, a part of a sphere, a part of a spheroid, a rotating parabola Various smooth curved surfaces such as a part of a body and a part of a rotating hyperbola can be exemplified. In the light guide plate, in some cases, a convex portion or a concave portion may not be formed on the peripheral portion of the first surface. Furthermore, the first primary color light emitted from the light source and incident on the light guide plate collides with a convex portion or a concave portion formed on the first surface of the light guide plate and is scattered, but is provided on the first surface of the light guide plate. The height, depth, pitch, and shape of the convex or concave portions may be constant or may be changed as the distance from the light source increases. In the latter case, for example, the pitch of the convex portion or the concave portion may be made finer as the distance from the light source increases. Here, the pitch of the convex portions or the pitch of the concave portions means the pitch of the convex portions or the pitch of the concave portions along the first primary color light incident direction to the light guide plate.

  In the planar light source device including the light guide plate, it is desirable to dispose the reflection member so as to face the first surface of the light guide plate. A color liquid crystal display device is disposed to face the second surface of the light guide plate. The first primary color light emitted from the light source is incident on the light guide plate from the first side surface of the light guide plate (for example, the surface corresponding to the bottom surface of the truncated quadrangular pyramid) and collides with the convex portion or the concave portion of the first surface. Scattered, emitted from the first surface, reflected by the reflecting member, incident again on the first surface, emitted from the second surface, and illuminates the color liquid crystal display device. For example, a diffusion sheet or a prism sheet may be disposed between the color liquid crystal display device and the second surface of the light guide plate. Further, the first primary color light emitted from the light source may be directly guided to the light guide plate or indirectly guided to the light guide plate. In the latter case, for example, an optical fiber may be used.

When expressed as the number M ₀ × N ₀ of a matrix in pixels arranged _{(pixels) (M 0, N 0)} , the value of (M _0, N _0), specifically, VGA (640, 480), S-VGA (800, 600), XGA (1024, 768), APRC (1152, 900), S-XGA (1280, 1024), U-XGA (1600, 1200), HD-TV (1920, 1080), Q-XGA (2048, 1536), (1920, 1035), (720, 480), (1280, 960), and some other image display resolutions. It is not limited to values. In the case of adopting the split driving method, the relationship between the value of (M ₀ , N ₀ ) and the value of (P, Q) is not limited, but can be exemplified in the following Table 1. Examples of the number of pixels constituting one display area unit include 20 × 20 to 320 × 240, preferably 50 × 50 to 200 × 200. The number of pixels in the display area unit may be constant or different.

  In the color liquid crystal display device assembly according to the first aspect or the second aspect of the present invention, the expressions (1-1) and (1-2) are satisfied, or the expression (2-1) ) And formula (2-2) are satisfied. Therefore, the light emitted from the second primary color light emitting region is mainly the second primary color light, and the light emitted from the third primary color light emitting region is mainly the third primary color light, and the second primary color light emitting region. The light emitted from the light source and the light emitted from the third primary color light emission region have high color purity, and the second primary color light emission region and the third primary color light emission region are optimized.

  Further, in the color liquid crystal display device assembly according to the first-A aspect of the present invention, the second primary color light emitting region includes a portion of the first surface of the first substrate corresponding to the second subpixel and the transparent first electrode. The third primary color light emitting region is disposed between the portion of the first surface of the first substrate corresponding to the third subpixel and the portion of the transparent first electrode. Thus, since the distance from the second subpixel to the second primary color light emitting area and the distance from the third subpixel to the third primary color light emitting area can be shortened, parallax is not easily generated. In addition, a diffusion region for diffusing the first primary color light that has passed through the first subpixel is disposed between the portion of the first surface of the first substrate corresponding to the first subpixel and the portion of the transparent first electrode. Therefore, an image based on the first subpixel can be clearly displayed.

  Furthermore, in the color liquid crystal display device assembly according to the first-B aspect of the present invention, the second primary color light emitting region is formed on the second surface portion of the first substrate corresponding to the second subpixel and the third substrate. The third primary color light emitting region is disposed between the second surface portion of the first substrate and the first surface portion of the third substrate corresponding to the third subpixel. Is arranged. By appropriately selecting the thickness of the first substrate, the distance from the second subpixel to the second primary color light emitting region and the distance from the third subpixel to the third primary color light emitting region can be shortened. Parallax is unlikely to occur. Moreover, the diffusion region for diffusing the first primary color light that has passed through the first subpixel is between the second surface portion of the first substrate and the first surface portion of the third substrate corresponding to the first subpixel. Since it is arranged, an image based on the first sub-pixel can be clearly displayed.

  Further, in the color liquid crystal display device assembly according to the 2-A aspect of the present invention, the second primary color light emitting region includes a portion of the first surface of the second substrate corresponding to the second subpixel and the transparent second electrode. The third primary color light emitting region is disposed between the portion of the first surface of the second substrate corresponding to the third subpixel and the portion of the transparent second electrode. Therefore, it is ensured that optical crosstalk occurs such that light emitted from the second primary color emission region or the third primary color emission region enters a subpixel (liquid crystal cell) adjacent to the corresponding subpixel (liquid crystal cell). Can be prevented.

  Furthermore, in the color liquid crystal display device assembly according to the 2-B aspect of the present invention, the second primary color light emitting region is formed on the first surface portion of the third substrate corresponding to the second subpixel and on the second substrate. The third primary color light emitting region is disposed between the first surface portion of the third substrate corresponding to the third subpixel and the second surface portion of the second substrate. Is arranged. Therefore, it is ensured that optical crosstalk occurs such that light emitted from the second primary color emission region or the third primary color emission region enters a subpixel (liquid crystal cell) adjacent to the corresponding subpixel (liquid crystal cell). Can be prevented.

  In addition, in the color liquid crystal display device assembly according to the first-A aspect, the first-B aspect, the second-A aspect, or the second-B aspect of the present invention, white light is emitted from the light source. Instead of being emitted, the first primary color light is emitted. Unlike the conventional technique, the second primary color light emission region and the third primary color light emission region for emitting (emitting) the second primary color light and the third primary color light are provided separately from the light source. Therefore, unlike the prior art, there is no need for a process of obtaining light of a desired color by passing white light emitted from a light source through a color filter disposed in a color liquid crystal display device, and is generated in the light source. The effective utilization efficiency of the first primary color light can be improved, and as a result, the power consumption of the color liquid crystal display device assembly can be reduced. In addition, the degree of freedom in selecting the light emitting particles constituting the second primary color light emitting region and the third primary color light emitting region, and the degree of freedom in designing the light emission intensity of the second primary color light emitting region and the third primary color light emitting region can be increased. It becomes possible to obtain a color liquid crystal display device assembly with higher luminous efficiency.

In the surface light source device, a division drive method (partial drive method) is adopted, and a control signal corresponding to a drive signal having a value equal to the drive area maximum value x _U-max in the display area unit is supplied to the pixel. In order to obtain the assumed pixel brightness (light transmittance, display brightness at the first specified value Lt ₁ , second specified value y ₂ ), the light source constituting the planar light source unit corresponding to the display area unit is obtained. If the luminance is controlled by the drive circuit, not only can the power consumption of the planar light source device be reduced, but also the white level can be increased and the black level can be decreased, resulting in a high contrast ratio (on the screen surface of the color liquid crystal display device). Brightness ratio of the all black display portion and the all white display portion, which does not include external light reflection, etc., and the brightness of the desired display area can be emphasized. To improve Door can be.

  Hereinafter, the present invention will be described based on examples with reference to the drawings.

  Example 1 relates to a color liquid crystal display device assembly according to a first aspect of the present invention, more specifically, a first-A aspect. The color liquid crystal display device assembly of Example 1 or Examples 2 to 8 to be described later is disposed on the color liquid crystal display device and the rear panel so as to face the rear panel (Example 1). To Embodiment 6) A planar light source device 60 having a light source for illuminating the color liquid crystal display device from the rear panel side is provided.

Here, in Example 1 or Example 2 to Example 8 described later, a color liquid crystal display device (more specifically, a transmissive color liquid crystal display device) is:
(A-1) a front panel including the transparent first electrode 11 formed on the first surface 10A of the first substrate 10 having the first surface 10A and the second surface 10B;
(A-2) a rear panel including the transparent second electrode 21 formed on the first surface 20A of the second substrate 20 having the first surface 20A and the second surface 20B, and
(A-3) Liquid crystal materials 40, 140, 240, 340 disposed between the first surface 10A of the first substrate 10 and the first surface 20A of the second substrate 20;
It has. A pixel including at least a first subpixel, a second subpixel, and a third subpixel (a first subpixel, a second subpixel, and a third subpixel in the first to eighth embodiments). Are arranged in a two-dimensional matrix. The planar light source device 60 will be described in detail later.

In the color liquid crystal display device assembly of Example 1, the light source emits first primary color light corresponding to the first primary color among the three primary colors composed of the first primary color, the second primary color, and the third primary color. More specifically, the first primary color is blue, the second primary color is green (for example, wavelength lambda ₂ = 538 nm), the third primary color is red (for example, wavelength lambda ₃ = 655 nm). The light source includes a light emitting diode that emits blue light (for example, wavelength λ ₁ = 450 nm) as the first primary color light. The same applies to Examples 2 to 8 described later.

  As shown in a schematic partial cross-sectional view of FIG. 5, in the color liquid crystal display device assembly of Example 1, the diffusion region 51, the second primary color light emission region 52, and the third primary color light emission region. 53. Here, the second primary color light emitting region 52 is composed of second primary color light emitting particles that emit second primary color light (green light) corresponding to the second primary color (green), is emitted from the light source, and passes through the second subpixel. The second primary color light (green light) is emitted by being excited by the first primary color light (blue light). The third primary color light emitting region 53 includes third primary color light emitting particles that emit third primary color light (red light) corresponding to the third primary color (red), and is emitted from the light source and passed through the third subpixel. It is excited by the primary color light (blue light) and emits the third primary color light (red light). Further, the diffusion region 51 diffuses the first primary color light (blue light) emitted from the light source and passed through the first subpixel. Here, the second primary color light emitting region 52 is disposed between the portion of the first surface 10A of the first substrate 10 and the portion of the transparent first electrode 11 corresponding to the second subpixel (for example, displaying green). Has been. The third primary color light emitting region 53 is disposed between the first surface portion 10 </ b> A of the first substrate 10 corresponding to the third subpixel (for example, displaying red) and the transparent first electrode 11 portion. . Furthermore, the diffusion region 51 is disposed between the first surface portion 10A of the first substrate 10 corresponding to the first subpixel and the transparent first electrode 11 portion.

Specifically, the second primary color luminescent particles are composed of sulfide-based phosphor particles or oxide-based phosphor particles and a binder (ethyl cellulose or silicone resin), and the third primary color luminescent particles are also sulfide-based phosphor particles. Or it consists of oxide type phosphor particles and a binder (ethylcellulose or silicone resin), etc., and the diffusion region 51 consists of silica particles and a binder (ethylcellulose or silicone resin). A region between the second primary color light emission region 52 and the third primary color light emission region 53, a region between the diffusion region 51 and the second primary color light emission region 52, and a diffusion region 51 and the third primary color light emission region 53 A light absorption layer (black matrix) 54 made of a black pigment such as carbon black or a black dye is formed in the area between the two. When expressed as the number M ₀ × N ₀ of a matrix in pixels arranged _{(pixels) (M 0, N 0)} , a _{(M 0, N 0) =} (1920,1080). Therefore, the number of each of the first subpixel, the second subpixel, and the third subpixel is also M ₀ × N ₀ . The arrangement state of the subpixels was a stripe arrangement. The second primary color luminescent particles, the third primary color luminescent particles, the material constituting the light absorption layer (black matrix), the number of pixels (pixels), and the arrangement state of the sub-pixels are the same in Examples 2 to 8 described later. It can be.

In the color liquid crystal display device assembly of Example 1, the second primary color light and the third primary color light emission region 52, the third primary color light emission region 53, the diffusion region 51 and the transparent first electrode 11 are interposed between the second primary color light and the first primary color light. A light reflecting film 14 that reflects light of the three primary colors is disposed. A first polarizing film 13 is disposed between the light reflecting film 14 and the transparent first electrode 11. Further, the smoothing film 15 is disposed between the second primary color light emitting region 52, the third primary color light emitting region 53, the diffusion region 51, and the light reflecting film 14. The light reflecting film 14 is composed of a multilayer laminated film of SiO ₂ film and Nb ₂ O ₅ having a thickness of about 1 μm, and the smoothing film 15 is composed of acrylic resin or silicone resin having a thickness of several μm to several tens μm. The materials constituting the light reflecting film and the smoothing film can be the same in Examples 2 to 8 described later.

  In Example 1 or Examples 2 to 4 described later, the liquid crystal materials 40 and 140 constituting the liquid crystal layer having a thickness of about 2 μm to 3 μm are liquid crystals whose control mode is the TN control mode or the STN control mode. Made of material. In the first embodiment, the first substrate 10 having a thickness of about 0.7 mm and the second substrate 20 having a thickness of about 0.7 mm are made of non-alkali glass, and a transparent first electrode (also called a common electrode) 11. The transparent second electrode (also referred to as pixel electrode) 21 is made of ITO, and the patterns of the transparent first electrode 11 and the transparent second electrode 21 are determined based on specifications required for the color liquid crystal display device. Has been. A second polarizing film 23 is disposed on the second surface 20B of the second substrate 20. A second polarizing film 23 may be disposed between the first surface 20A of the second substrate 20 and the transparent second electrode 21. Furthermore, a first alignment film 12 is formed on the transparent first electrode 11 (on the liquid crystal material side), and a second alignment film 22 is formed on the entire surface including the transparent second electrode 21. A switching element (not shown) made of TFT is formed on the first surface 20A of the second substrate 20, and conduction / non-conduction of the transparent second electrode 21 is controlled by the switching element. The configurations and various members of these color liquid crystal display devices can be the same in Examples 2 to 8 described later unless otherwise specified.

In the color liquid crystal display device assembly of the first embodiment, the wavelength of the first primary color light is λ ₁ , the wavelength of the second primary color light is λ ₂ , and the wavelength of the third primary color light is λ ₃ . In the spectrum of the light emitted from the primary color emission region, the light intensity at the wavelength λ ₁ is I ₂ (λ ₁ ), the light intensity at the wavelength λ ₂ is I ₂ (λ ₂ ), and the light is emitted from the third primary color emission region. When the light intensity at the wavelength λ ₁ in the spectrum of the light is I ₃ (λ ₁ ) and the light intensity at the wavelength λ ₃ is I ₃ (λ ₃ ),
I ₂ (λ ₁ ) / I ₂ (λ ₂ ) ≦ 0.1 (1-1)
I ₃ (λ ₁ ) / I ₃ (λ ₃ ) ≦ 0.1 (1-2)
Is satisfied.

More specifically, (Sr, Ba) ₂ SiO ₄ : Eu (emission wavelength λ ₂ = 525 nm) and SrGa ₂ S ₄ : Eu are used as the second primary color light emitting particles (green light emitting phosphor particles) for the test. (Emission wavelength λ ₂ = 538 nm), and CaAlSiN ₃ : Eu (emission wavelength λ ₃ = 660 nm) and CaS: Eu (emission wavelength λ ₃ = 655 nm) are used as the third primary color emission particles (red emission phosphor particles). The second primary color light emitting region 52 and the third primary color light emitting region 53 having the thicknesses shown in Tables 2 and 3 below were formed. In forming the second primary color light emitting region 52 and the third primary color light emitting region 53, the phosphor layers having the “thickness per layer” shown in Tables 2 and 3 are shown in Tables 2 and 3. It was formed by overlapping “number of layers”. The thicknesses t ₂ and t 3 in Tables 2 and ₃ are calculated values. Then, I ₂ (λ ₁ ), I ₂ (λ ₂ ), I ₃ (λ ₁ ), I ₃ (λ ₃ ), emission luminance, and chromaticity coordinates (x, y) were measured. The obtained results are shown in Tables 2 and 3.

From Table 2 and Table 3, when (Sr, Ba) ₂ SiO ₄ : Eu is used as the second primary color light emitting particle (green light emitting phosphor particle), thickness t ₂ = 15 mg / cm ² (4 layers), 19 mg / cm ² (5 layers), at 23 mg / cm ² (6 layers), satisfies the equation (2-1) to formula (1-1) or later, the second primary light emitting particles (green-emitting phosphor particles ) When SrGa ₂ S ₄ : Eu is used, in the thickness t ₂ = 8.1 mg / cm ² (5 layers) and 9.7 mg / cm ² (6 layers), the formula (1-1) or the following It was found that the following expression (2-1) was satisfied. When (Sr, Ba) ₂ SiO ₄ : Eu is used as the second primary color light emitting particle (green light emitting phosphor particle) and the thickness is t ₂ = 23.05 mg / cm ² (six layers), This is indicated by “A” in FIG. For reference, the same luminescent particles used as the second primary light emitting particles, the spectrum of light when the thickness t ₂ = 7.84 mg / cm ² (4-layer), indicated by "B" in FIG. 1 The light spectrum when the thickness t ₂ = 5.88 mg / cm ² (3 layers) is shown by “C” in FIG. 1A and 1B are the same graph, FIG. 1B is an enlarged view of part of FIG. 1A. FIG. 2 shows the spectrum of light when SrGa ₂ S ₄ : Eu is used as the second primary color light emitting particle (green light emitting phosphor particle) and the thickness is t ₂ = 9.72 mg / cm ² (six layers). Indicated by “A”. For reference, the light spectrum when the same luminescent particles are used as the second primary color luminescent particles and the thickness is t ₂ = 4.86 mg / cm ² (3 layers) is shown by “B” in FIG. The light spectrum when the thickness t ₂ = 2.34 mg / cm ² (3 layers) is shown by “C” in FIG. 2A and 2B are the same graphs, but FIG. 2B is an enlarged view of part of FIG.

When CaAlSiN ₃ : Eu is used as the third primary color light-emitting particle (red light-emitting phosphor particle), when the thickness t ₃ = 4.8 mg / cm ² (four layers), the equation (1-2) or the equation (described later) 2-2) is satisfied and when CaS: Eu is used as the third primary color light emitting particle (red light emitting phosphor particle), the thickness t ₃ = 2.2 mg / cm ² (six layers), 2.6 mg / It was found that in cm ² (7 layers), the formula (1-2) or the formula (2-2) described later is satisfied. The light spectrum when CaAlSiN ₃ : Eu is used as the third primary color light emitting particle (red light emitting phosphor particle) and the thickness is t ₃ = 4.80 mg / cm ² (four layers) is shown in FIG. ". For reference, the light spectrum when the same luminescent particles are used as the third primary color luminescent particles and the thickness t ₃ = 2.32 mg / cm ² (four layers) is shown by “B” in FIG. The light spectrum when the thickness t _{3 is} 0.58 milligram / cm ² (one layer) is indicated by “C” in FIG. 3A and 3B are the same graphs, but FIG. 3B is an enlarged view of part of FIG. The light spectrum when CaS: Eu is used as the third primary color light emitting particle (red light emitting phosphor particle) and the thickness is t ₃ = 2.59 mg / cm ² (7 layers) is shown in FIG. It shows with. For reference, the light spectrum when the same luminescent particles are used as the third primary color luminescent particles and the thickness is t ₃ = 1.48 mg / cm ² (four layers) is shown by “B” in FIG. The light spectrum when the thickness t _{3 is} 0.25 mg / cm ² (one layer) is shown by “C” in FIG. 4A and 4B are the same graph, FIG. 4B is an enlarged view of part of FIG. 4A.

From Tables 2 and 3, when the thicknesses of the second primary color emission region and the third primary color emission region are increased, the value of I ₂ (λ ₁ ) / I ₂ (λ ₂ ), I ₃ (λ ₁ ) / I value of ₃ (lambda ₃₎ is decreased, the value of I ₂ (λ _2), decreases the value of I _{3 (λ 3),} tends to decrease the brightness. On the other hand, the value of the chromaticity coordinates (x, y) approaches a desired value [for example, (0.290, 0.680) and (0.680, 0.290)]. Therefore, based on the value of I ₂ (λ ₁ ) / I ₂ (λ ₂ ) and the value of I ₂ (λ ₂ ), and further on the basis of the value of chromaticity coordinates (x, y), the second primary color light emitting region. And the chromaticity coordinates (x, y) are further determined based on the values of I ₃ (λ ₁ ) / I ₃ (λ ₃ ) and I ₃ (λ ₃ ). Based on this value, the optimal thickness of the third primary color light emitting region may be determined.

Here, in the color liquid crystal display device assembly of Example 1, the thickness of the second primary color light emitting region is determined so as to satisfy Expression (1-1), and Expression (1-2) is satisfied. As described above, the thickness of the third primary color light emitting region is determined. More specifically, the thickness t ₂ of the second primary light emitting region satisfying the equation (1-1) is, when converted in milligrams / cm ^2, be a t ₂ = 9.7 (mg / cm ²⁾ , the thickness t ₃ of the third primary light emitting region satisfying the equation (1-2), when converted in milligrams / cm ^2, is t ₃ = 2.6 (mg / cm ^2). Incidentally, the same applies thickness t ₃ of the thickness t _2, the third primary light emitting regions of the second primary light emitting regions in Example 3 or Example 5 below.

  In the color liquid crystal display device assembly of Example 1, the first primary color light (blue light) emitted from the light source during the operation of the color liquid crystal display device is generated by the second polarizing film 23, the second substrate 20, and the first. 1 sub-pixel (first liquid crystal cell composed of transparent second electrode 21, second alignment film 22, liquid crystal material 40, first alignment film 12, transparent first electrode 11), first polarizing film 13, light reflecting film 14, passes through the smoothing film 15, the diffusion region 51, and the first substrate 10, and is emitted as the first primary color light (blue light). Further, the first primary color light (blue light) emitted from the light source is emitted from the second polarizing film 23, the second substrate 20, the second subpixel (the transparent second electrode 21, the second alignment film 22, the liquid crystal material 40, the first The first alignment film 12 and the second liquid crystal cell comprising the transparent first electrode 11), the first polarizing film 13, the light reflecting film 14, the smoothing film 15, the second primary color light emitting region 52, and the first substrate 10. , And emitted as second primary color light (green light). Furthermore, the first primary color light (blue light) emitted from the light source is the second polarizing film 23, the second substrate 20, the third subpixel (the transparent second electrode 21, the second alignment film 22, the liquid crystal material 40, The first liquid crystal cell comprising the first alignment film 12 and the transparent first electrode 11), the first polarizing film 13, the light reflecting film 14, the smoothing film 15, the third primary color light emitting region 53, and the first substrate 10. Then, it is emitted as the third primary color light (red light). And as a result of the above, an observer can recognize as an image in a color liquid crystal display device.

  In the color liquid crystal display device assembly of Example 1 or Example 2 to Example 8 to be described later, Expression (1-1) and Expression (1-2) are satisfied, or Expression (2) -1) and formula (2-2) are satisfied. Therefore, the light emitted from the second primary color light emitting areas 52, 152, 252, and 352 is mainly the second primary color light, and the light emitted from the third primary color light emitting areas 53, 153, 253, and 353 is Light mainly emitted from the third primary color light-emitting areas 52, 152, 252, and 352 and light emitted from the third primary color light-emitting areas 53, 153, 253, and 353 have high color purity. The second primary color light emitting areas 52, 152, 252, and 352 and the third primary color light emitting areas 53, 153, 253, and 353 are optimized.

  In addition, in the color liquid crystal display device assembly according to the first embodiment, the second primary color light emitting region 52 is formed between the portion of the first surface 10A of the first substrate 10 corresponding to the second subpixel and the portion of the transparent first electrode 11. The third primary color light emitting region 53 is disposed between the portion of the first surface 10 </ b> A of the first substrate 10 corresponding to the third subpixel and the portion of the transparent first electrode 11. As described above, since the distance from the second subpixel to the second primary color light emitting region 52 and the distance from the third subpixel to the third primary color light emitting region 53 can be shortened, parallax is hardly generated. . In addition, the diffusion region 51 that diffuses the first primary color light that has passed through the first subpixel is between the portion of the first surface 10A of the first substrate 10 corresponding to the first subpixel and the portion of the transparent first electrode 11. Therefore, an image based on the first sub-pixel can be clearly displayed.

  In the color liquid crystal display device assembly of Example 1 or Example 2 to Example 8 described later, the light source does not emit white light, but the first primary color light (blue light). ) Is emitted. The second primary color light emission region and the third primary color light emission region for emitting the second primary color light (green light) and the third primary color light (red light) are provided separately from the light source. Therefore, unlike the prior art, there is no need for a process of obtaining light of a desired color by passing the white light emitted from the light source through the color filter in which the color liquid crystal display device is arranged. It is possible to improve the effective utilization efficiency of the first primary color light (blue light), and as a result, it is possible to achieve a reduction in power consumption of the color liquid crystal display device assembly.

  The color liquid crystal display device in the color liquid crystal display device assembly of Example 1 can be manufactured, for example, by the following method.

[Step-100]
First, the light absorption layer 54 is formed on a desired region of the first surface 10A of the first substrate 10 based on a photolithography technique or a screen printing method. Next, the second primary color light emission region 52 and the third primary color light emission region 53 are formed on the first surface 10 </ b> A of the first substrate 10 not covered with the light absorption layer 54. Specifically, red photosensitive phosphor particle composition (red light emitting phosphor slurry: for example, red light emitting phosphor particles are dispersed in polyvinyl alcohol (PVA) resin and water, and ammonium bichromate is further added. A red light emitting phosphor slurry) is applied to the entire surface, exposed and developed to form a third primary color light emitting region 53 comprising a red light emitting phosphor layer. Then, the step of forming the third primary color light emitting region 53 is repeated until the third primary color light emitting region 53 has a desired thickness. Next, a green photosensitive phosphor particle composition (green light emitting phosphor slurry: for example, green light emitting phosphor in which green light emitting phosphor particles are dispersed in polyvinyl alcohol (PVA) resin and water, and further, ammonium bichromate is added. Body slurry) is applied to the entire surface, exposed to light, and developed to form a second primary color light emitting region 52 comprising a green light emitting phosphor layer. Then, the step of forming the second primary color light emitting region 52 is repeated until the second primary color light emitting region 52 has a desired thickness. Note that the order of forming the second primary color light emitting region 52 and the third primary color light emitting region 53 may be reversed. Moreover, the formation method of the 2nd primary color light emission area | region 52 and the 3rd primary color light emission area | region 53 is not limited to the method demonstrated above, For example, you may form each fluorescent substance layer by the screen printing method etc. In Example 2 to Example 8 described later, the phosphor layer can be formed by a substantially similar method. Thereafter, for example, based on a printing method, after forming a transparent binder resin layer in which a light diffusing agent is dispersed in a desired region, the transparent binder resin is cured, whereby the diffusion region 51 can be formed. After forming the diffusion region 51, the second primary color light emission region 52 and the third primary color light emission region 53 may be formed.

[Step-110]
Thereafter, the smoothing film 15 is bonded onto the diffusion region 51, the second primary color light emitting region 52, and the third primary color light emitting region 53, and further, the light reflecting film 14 is bonded onto the smoothing film 15.

[Step-120]
Next, the first polarizing film 13 is bonded onto the light reflecting film 14 to form the transparent first electrode 11 patterned in a desired shape on the first polarizing film 13, and the first orientation is formed on the transparent first electrode 11. After the film 12 is formed, the first alignment film 12 is subjected to an alignment process. Thus, the front panel can be obtained, and the manufacturing process of such a front panel can be basically applied to a well-known manufacturing process.

[Step-130]
On the other hand, a switching element (not shown) made of TFT is formed on the first surface 20A of the second substrate 20 by a well-known method, an insulating film (not shown) covering the entire surface is formed, and then the transparent film is formed on the insulating film. After the second electrode 21 is formed and then the second alignment film 22 is formed on the entire surface including the transparent second electrode 21, the second alignment film 22 is subjected to alignment treatment. Further, the second polarizing film 23 is bonded to the second surface 20B of the second substrate 20. Thus, the rear panel can be obtained, and the manufacturing process of the rear panel can be a well-known manufacturing process.

[Step-140]
Then, based on a well-known method, a color liquid crystal display device is assembled using a front panel, a rear panel, a liquid crystal material, a seal material (sealing material), and the like. Next, the color liquid crystal display device and the planar light source device are assembled based on a known method.

  As shown in a schematic partial cross-sectional view in FIG. 6, the second primary color light emitting region 52, the third primary color light emitting region 53, the diffusion region 51, and the transparent first electrode 11 (more specifically, the first polarized light A first condensing member 55 that condenses the first primary color light to the diffusion region 51 and a second condensing member 56 that condenses the second primary color light to the second primary light emitting region 52. In addition, a configuration in which a third light collecting member 57 for condensing the third primary color light to the third primary color light emitting region 53 is further provided. Here, the first condensing member 55, the second condensing member 56, and the third condensing member 57 are made by Nippon Sheet Glass Co., Ltd., which is formed by integrating a lens array in which a large number of gradient index lenses are arranged. The SELFOC lens array. Further, the smoothing film 15 ′ is disposed between the first light collecting member 55, the second light collecting member 56, the third light collecting member 57, and the light reflecting film 14, but the smoothing film 15 ′ It may be omitted and a space may be left between the first light collecting member 55, the second light collecting member 56, the third light collecting member 57, and the light reflecting film 14.

  The second embodiment is a modification of the first embodiment. As shown in a schematic partial cross-sectional view in FIG. 7, in the color liquid crystal display device assembly of Example 2, the second primary color light emitting region 52, the third primary color light emitting region 53, the diffusion region 51, and the first A color filter 58 is disposed between the first surface 10 </ b> A of the substrate 10.

  The color filter 58 includes a black matrix (for example, made of chromium) for shielding a gap between the colored patterns, and a first primary color, a second primary color, and a third primary color (for example, blue, green, It is composed of a colored layer of red) and is produced by a dyeing method, a pigment dispersion method, a printing method, an electrodeposition method, or the like. The colored layer is made of, for example, a resin material, or is colored with a pigment. The pattern of the colored layer may be a stripe arrangement as long as it matches the arrangement state (array pattern) of the subpixels. The same applies to Example 4, Example 6, and Example 8 to be described later.

  A first condensing member that condenses the first primary color light that has passed through the diffusion region 51 onto the color filter 58 between the second primary color light emission region 52, the third primary color light emission region 53, and the diffusion region 51 and the color filter 58. 55, a second light condensing member 56 that condenses the second primary color light emitted in the second primary color light emission region 52 onto the color filter 58, and a third primary color light emitted in the third primary color light emission region 53. A third light condensing member 57 that condenses light is further provided. The smoothing film 15 ′ is disposed between the first light collecting member 55, the second light collecting member 56, the third light collecting member 57, and the color filter 58, but the smoothing film 15 ′ is omitted. A space may be left between the first light collecting member 55, the second light collecting member 56, the third light collecting member 57, and the color filter 58. In some cases, the smoothing film 15 ′, the first light collecting member 55, the second light collecting member 56, and the third light collecting member 57 are omitted, and the light reflecting film 14 is in direct contact with the first polarizing film 13. It can also be configured and structured. In Example 2, the smoothing film 15 is disposed between the light reflecting film 14 and the second primary color light emitting area 52, the third primary color light emitting area 53, the diffusion area 51, and the smoothing film 15. May be omitted.

  Except for the above points, the configuration and structure of the color liquid crystal display device assembly according to the second embodiment can be the same as the configuration and structure of the color liquid crystal display device assembly according to the first embodiment. To do.

  In the color liquid crystal display device assembly of Example 2, the first primary color light (blue light) emitted from the light source during the operation of the color liquid crystal display device is the second polarizing film 23, the second substrate 20, the first. 1 subpixel (a first liquid crystal cell composed of a transparent second electrode 21, a second alignment film 22, a liquid crystal material 40, a first alignment film 12, and a transparent first electrode 11), a first polarizing film 13, a light reflecting film 14, the smoothing film 15, the diffusion region 51, the first light collecting member 55, the smoothing film 15 ′, the color filter 58, and the first substrate 10 are emitted as the first primary color light (blue light). In addition, the first primary color light (blue light) emitted from the light source is the second polarizing film 23, the second substrate 20, the second subpixel (the transparent second electrode 21, the second alignment film 22, the liquid crystal material 40, the first 1 alignment film 12, second liquid crystal cell composed of transparent first electrode 11), first polarizing film 13, light reflecting film 14, smoothing film 15, second primary color light emitting region 52, second light collecting member 56, The light passes through the smoothing film 15 ′, the color filter 58, and the first substrate 10, and is emitted as the second primary color light (green light). Furthermore, the first primary color light (blue light) emitted from the light source is the second polarizing film 23, the second substrate 20, the third subpixel (transparent second electrode 21, second alignment film 22, liquid crystal material 40, A first liquid crystal cell comprising a first alignment film 12 and a transparent first electrode 11), a first polarizing film 13, a light reflecting film 14, a smoothing film 15, a third primary color light emitting region 53, and a third light collecting member 57 Then, the light passes through the smoothing film 15 ′, the color filter 58, and the first substrate 10, and is emitted as the third primary color light (red light). And as a result of the above, an observer can recognize as an image in a color liquid crystal display device.

  As described above, in the color liquid crystal display device assembly of Example 2, the color purity of the image displayed on the color liquid crystal display device assembly can be further improved by disposing the color filter 58. it can. In addition, since the first light collecting member 55, the second light collecting member 56, and the third light collecting member 57 are further provided, it is possible to reliably prevent the occurrence of parallax and the occurrence of optical crosstalk.

  Example 3 is also a modification of Example 1, and relates to a color liquid crystal display device assembly according to the first-B aspect of the present invention. The color liquid crystal display device assembly according to the third embodiment has a first surface 130A facing the front panel, a first surface 130A facing the front panel, and a second surface 130B facing the first surface 130A. Three substrates 130 are further provided.

  Even in the color liquid crystal display device assembly of Example 3, the light source is the first primary color light corresponding to the first primary color among the three primary colors composed of the first primary color, the second primary color, and the third primary color ( (Blue light) is emitted. As shown in a schematic partial cross-sectional view of FIG. 8, even in the color liquid crystal display device assembly of Example 3, the diffusion region 151, the second primary color light emitting region 152, and the third primary color light emitting region are used. 153. Here, the second primary color light emitting region 152 is disposed between the portion of the second surface 10B of the first substrate 10 and the portion of the first surface 130A of the third substrate 130 corresponding to the second subpixel, It is composed of second primary color light emitting particles that emit a second primary color light (green light) corresponding to the primary color (green), and is excited by the first primary color light (blue light) emitted from the light source and passing through the second subpixel. Emits second primary color light (green light). The third primary color light emitting region 153 is disposed between the portion of the second surface 10B of the first substrate 10 corresponding to the third subpixel and the portion of the first surface 130A of the third substrate 130, and the third primary color. The first primary color light emitting particles that emit the third primary color light (red light) corresponding to (red) are emitted from the light source and excited by the first primary color light (blue light) that has passed through the third subpixel. Emits three primary colors (red light). The diffusion region 151 is disposed between the portion of the second surface 10B of the first substrate 10 corresponding to the first subpixel and the portion of the first surface 130A of the third substrate 130, and is emitted from the light source. This is a region for diffusing the first primary color light (blue light) that has passed through the pixels. A region between the second primary color light emission region 152 and the third primary color light emission region 153, a region between the diffusion region 151 and the second primary color light emission region 152, and a region between the diffusion region 151 and the third primary color light emission region 153 A light absorption layer (black matrix) 154 is formed.

  In Example 3, the second primary color light emitting region 152, the third primary color light emitting region 153, the diffusion region 151, and the second surface 10B of the first substrate 10 (more specifically, the first polarizing film 13). The first condensing member 155 that condenses the first primary color light (blue light) onto the diffusion region 151, and the second condensate that condenses the first primary color light onto the second primary color light emitting region 152. A member 156 and a third light collecting member 157 for condensing the first primary color light to the third primary color light emitting region 153 are further provided. The first light collecting member 155, the second light collecting member 156, and the third light collecting member 157 are formed by integrating a lens array in which a large number of gradient index lenses are arranged, as in the first embodiment. . The first light collecting member 155, the second light collecting member 156, and the third light collecting member 157 are disposed on the first polarizing film 13 provided on the second surface 10 </ b> B of the first substrate 10.

  In the color liquid crystal display device assembly of Example 3, the first light collecting member 155, the second light collecting member 156, the third light collecting member 157, the diffusion region 151, the second primary color light emitting region 152, and the third primary color light emitting region 153 are used. Between the two, a smoothing film 115 and a light reflection film 114 that reflects the second primary color light and the third primary color light are disposed. The smoothing film 115 may be omitted, and a space may be left between the first light collecting member 155, the second light collecting member 156, the third light collecting member 157, and the light reflecting film 114. In some cases, the smoothing film 115, the first light collecting member 155, the second light collecting member 156, and the third light collecting member 157 are omitted, and the light reflecting film 114 is in direct contact with the first polarizing film 13. It can also be a structure.

  In Example 3, the thickness of the first substrate 10 was set to 0.1 mm.

  Except for the above points, the configuration and structure of the color liquid crystal display device assembly of the third embodiment can be the same as the configuration and structure of the color liquid crystal display device assembly of the first embodiment. To do.

  In the color liquid crystal display device assembly of Example 3, the first primary color light (blue light) emitted from the light source during the operation of the color liquid crystal display device is the second polarizing film 23, the second substrate 20, the first 1 subpixel (a first liquid crystal cell composed of a transparent second electrode 21, a second alignment film 22, a liquid crystal material 140, a first alignment film 12, and a transparent first electrode 11), a first substrate 10, a first polarizing film 13, passes through the first light collecting member 155, the smoothing film 115, the light reflecting film 114, the diffusion region 151, and the third substrate 130, and is emitted as the first primary color light (blue light). In addition, the first primary color light (blue light) emitted from the light source is the second polarizing film 23, the second substrate 20, the second subpixel (the transparent second electrode 21, the second alignment film 22, the liquid crystal material 140, the first 1 alignment film 12, second liquid crystal cell comprising transparent first electrode 11), first substrate 10, first polarizing film 13, second condensing member 156, smoothing film 115, light reflecting film 114, second The light passes through the primary color light emitting region 152 and the third substrate 130 and is emitted as the second primary color light (green light). Furthermore, the first primary color light (blue light) emitted from the light source is a second polarizing film 23, a second substrate 20, a third subpixel (transparent second electrode 21, second alignment film 22, liquid crystal material 140, A first liquid crystal cell comprising a first alignment film 12 and a transparent first electrode 11), a first substrate 10, a first polarizing film 13, a third condensing member 157, a smoothing film 115, a light reflecting film 114, a first The light passes through the three primary color light emitting regions 153 and the third substrate 130 and is emitted as the third primary color light (red light). And as a result of the above, an observer can recognize as an image in a color liquid crystal display device.

  In the color liquid crystal display device assembly according to the third embodiment, the second primary color light emitting region 152 includes a portion of the second surface 10B of the first substrate 10 and a portion of the first surface 130A of the third substrate 130 corresponding to the second subpixel. The third primary color light emitting region 153 is disposed between the portion of the second surface 10B of the first substrate 10 and the portion of the first surface 130A of the third substrate 130 corresponding to the third subpixel. In addition, since the thickness of the first substrate 10 is appropriately selected, the distance from the second subpixel to the second primary color light emitting region 152, the third subpixel to the third primary color light emitting region 153 As a result, the parallax hardly occurs. In addition, the diffusion region 151 for diffusing the first primary color light (blue light) that has passed through the first subpixel has a portion of the first surface 10B of the first substrate 10 corresponding to the first subpixel and the third substrate 130. Since it is disposed between the portion of the first surface 130A, an image based on the first subpixel can be clearly displayed.

  The color liquid crystal display device in the color liquid crystal display device assembly of Example 3 can be manufactured, for example, by the following method.

[Step-300]
After the transparent first electrode 11 is formed on the first surface 10 </ b> A of the first substrate 10, the first alignment film 12 is formed on the transparent first electrode 11, and then the first alignment film 12 is subjected to alignment treatment. In addition, the first polarizing film 13 is bonded to the second surface 10 </ b> B of the first substrate 10. The manufacturing process so far can be a known manufacturing process. Next, the first light collecting member 155, the second light collecting member 156, and the third light collecting member 157 are bonded onto the first polarizing film 13, and the smoothing film 115 is further bonded thereon. In this way, a front panel can be obtained. On the other hand, the rear panel is manufactured by a known process in the same manner as in [Step-130] of the first embodiment.

[Step-310]
Meanwhile, the light absorption layer 154 is formed on a desired region on the first surface 130A of the third substrate 130, and then the region of the first surface 130A of the third substrate 130 that is not covered with the light absorption layer 154 is formed. A second primary color light emission region 152 and a third primary color light emission region 153 are formed thereon. Thereafter, for example, based on a printing method, the transparent binder resin layer in which the light diffusing agent is dispersed is formed in a desired region, and then the transparent binder resin is cured, whereby the diffusion region 151 can be formed. After forming the diffusion region 151, the second primary color light emission region 152 and the third primary color light emission region 153 may be formed. Next, the light reflection film 114 is formed on the diffusion region 151, the second primary color light emission region 152, the third primary color light emission region 153, and the light absorption layer 154.

[Step-320]
Thereafter, the smoothing film 115 and the light reflecting film 114 are bonded together to assemble the front panel and the third substrate 130. Then, based on a known method, a color liquid crystal display device is assembled using a front panel, a rear panel, a liquid crystal material, a seal material (sealing material), and the like. Next, the color liquid crystal display device and the planar light source device are assembled based on a known method.

  The fourth embodiment is a modification of the third embodiment. As shown in a schematic partial cross-sectional view in FIG. 9, in the color liquid crystal display device assembly of Example 4, the first surface 130A of the third substrate 130, the first light collecting member 155, the second A color filter 158 is disposed between the light collecting member 156 and the third light collecting member 157.

  Except for the above points, the configuration and structure of the color liquid crystal display device assembly of the fourth embodiment can be the same as the configuration and structure of the color liquid crystal display device assembly of the third embodiment. To do. Note that the second polarizing film 23 may be disposed on the first surface 20 </ b> A of the second substrate 20.

  In the color liquid crystal display device assembly of Example 4, the first primary color light (blue light) emitted from the light source during the operation of the color liquid crystal display device is the second polarizing film 23, the second substrate 20, and the first. 1 subpixel (a first liquid crystal cell composed of a transparent second electrode 21, a second alignment film 22, a liquid crystal material 140, a first alignment film 12, and a transparent first electrode 11), a first substrate 10, a first polarizing film 13, passes through the first light collecting member 155, the smoothing film 115, the light reflecting film 114, the diffusion region 151, the color filter 158, and the third substrate 130, and is emitted as the first primary color light (blue light). In addition, the first primary color light (blue light) emitted from the light source is the second polarizing film 23, the second substrate 20, the second subpixel (the transparent second electrode 21, the second alignment film 22, the liquid crystal material 140, the first 1 alignment film 12, second liquid crystal cell comprising transparent first electrode 11), first substrate 10, first polarizing film 13, second condensing member 156, smoothing film 115, light reflecting film 114, second The light passes through the primary color light emitting region 152, the color filter 158, and the third substrate 130, and is emitted as the second primary color light (green light). Furthermore, the first primary color light (blue light) emitted from the light source is the second polarizing film 23, the second substrate 20, the third subpixel (the transparent second electrode 21, the second alignment film 22, the liquid crystal material 140, A first liquid crystal cell comprising a first alignment film 12 and a transparent first electrode 11), a first substrate 10, a first polarizing film 13, a third condensing member 157, a smoothing film 115, a light reflecting film 114, a first The light passes through the three primary color light emitting regions 153, the color filter 158, and the third substrate 130, and is emitted as the third primary color light (red light). And as a result of the above, an observer can recognize as an image in a color liquid crystal display device.

  Even in the fourth embodiment, the smoothing film 115 is omitted, and a space is left between the first light collecting member 155, the second light collecting member 156, the third light collecting member 157, and the light reflecting film 114. May be. In some cases, the smoothing film 115, the first light collecting member 155, the second light collecting member 156, and the third light collecting member 157 are omitted, and the light reflecting film 114 is directly connected to the first polarizing film 13. It is also possible to have a structure and structure that come into contact with each other.

  Example 5 relates to a color liquid crystal display device assembly according to the second aspect of the present invention, and more specifically to a color liquid crystal display device assembly according to the second 2-A aspect of the present invention.

  Also in the color liquid crystal display device assembly of Example 5, the light source is the first primary color light corresponding to the first primary color among the three primary colors composed of the first primary color, the second primary color and the third primary color ( (Blue light) is emitted. As shown in a schematic partial cross-sectional view of FIG. 10, in the color liquid crystal display device assembly of Example 5, the first primary color light passage area 251, the second primary color light emission area 252, and the first Three primary color light emitting regions 253 are provided. Here, the second primary color light emitting region 252 is composed of second primary color light emitting particles that emit second primary color light (green light) corresponding to the second primary color (green), and the first primary color light (blue color) emitted from the light source. The second sub-pixel is illuminated by the second primary color light (green light). The third primary color light emitting region 253 includes third primary color light emitting particles that emit third primary color light (red light) corresponding to the third primary color (red), and is excited by the first primary color light emitted from the light source. Three primary color lights (red light) are emitted to illuminate the third subpixel. The second primary color light emitting region 252 is disposed between the portion of the first surface 20A of the second substrate 20 corresponding to the second subpixel (for example, displaying green) and the portion of the transparent second electrode 21. . The third primary color light emitting region 253 is disposed between the portion of the first surface 20A of the second substrate 20 and the portion of the transparent second electrode 21 corresponding to the third subpixel (for example, displaying red). . The first primary color light passage region 251 is a region through which the first primary color light (blue light) emitted from the light source passes to the first subpixel. A region between the second primary color light emission region 252 and the third primary color light emission region 253, a region between the first primary color light passage region 251 and the second primary color light emission region 252, and the first primary color light passage region 251 and the third primary color. A light absorption layer (black matrix) 254 is formed in a region between the light emitting region 253.

  In the fifth embodiment, the second primary color light (green light) emitted in the second primary color light emission region 252 is disposed between the second primary color light emission region 252 and the transparent second electrode 21 and is supplied to the second sub-color. The second condensing member 256 that condenses to the pixel, and the third primary color light (red light) that is disposed between the third primary color light emitting region 253 and the transparent second electrode 21 and emits light in the third primary color light emitting region 253. ) Is condensed to the third sub-pixel.

  In the fifth embodiment, the first primary color light emitted from the light source, which is disposed between the first surface 20A of the second substrate 20 and the transparent second electrode 21, is collected into the first subpixel. A first condensing member 255 that emits light (that is, condenses the first primary color light that has passed through the first primary color light passage region 251 to the first subpixel) is provided. The first light collecting member 255, the second light collecting member 256, and the third light collecting member 257 are formed by integrating a lens array in which a number of gradient index lenses are arranged, as in the first embodiment. .

  In the color liquid crystal display device assembly of Example 5, the second primary color light emission region 252, the third primary color light emission region 253, the first primary color light passage region 251 and the first surface 21A of the second substrate 20 are disposed. A light reflecting film 214 that reflects the second primary color light and the third primary color light is disposed. In addition, the second polarizing film 23 is disposed between the first light collecting member 255, the second light collecting member 256, the third light collecting member 257, and the transparent second electrode 21, and further, The smoothing film 215 is disposed between the first light collecting member 255, the second light collecting member 256, the third light collecting member 257, and the second polarizing film 23, but the smoothing film 215 is omitted. You may leave a space between the 1st condensing member 255, the 2nd condensing member 256, the 3rd condensing member 257, and the 2nd polarizing film 23. FIG. Alternatively, the smoothing film 215, the first light collecting member 255, the second light collecting member 256, and the third light collecting member 257 are omitted, and the first primary color light passing region 251, the second primary color light emitting region 252 and the third primary color are omitted. The light emitting region 253 and the like can be configured to be in direct contact with the second polarizing film 23.

  In Example 5 or Examples 6 to 8 to be described later, the liquid crystal materials 240 and 340 are made of a material whose control mode is a control mode having a wide viewing angle characteristic such as an IPS mode or a VA mode. .

  Except for the above points, the configuration and structure of the color liquid crystal display device assembly of Example 5 can be the same as the configuration and structure of the color liquid crystal display device assembly of Example 1, and thus detailed description thereof is omitted. To do. Note that the first polarizing film 13 may be disposed on the first surface 10 </ b> A of the first substrate 10.

Also in the color liquid crystal display device assembly of Example 5, the wavelength of the first primary color light is λ ₁ , the wavelength of the second primary color light is λ ₂ , and the wavelength of the third primary color light is λ ₃ , In the spectrum of the light emitted from the primary color emission region, the light intensity at the wavelength λ ₁ is I ₂ (λ ₁ ), the light intensity at the wavelength λ ₂ is I ₂ (λ ₂ ), and the light is emitted from the third primary color emission region. When the light intensity at the wavelength λ ₁ in the spectrum of the light is I ₃ (λ ₁ ) and the light intensity at the wavelength λ ₃ is I ₃ (λ ₃ ),
I ₂ (λ ₁ ) / I ₂ (λ ₂ ) ≦ 0.1 (2-1)
I ₃ (λ ₁ ) / I ₃ (λ ₃ ) ≦ 0.1 (2-2)
Is satisfied. The same applies to Examples 6 to 8 described later. Specifically, it is as described in the first embodiment.

Here, even in the color liquid crystal display device assembly of Example 5, the thickness of the second primary color light emitting region is determined so as to satisfy Expression (2-1), and Expression (2-2) is satisfied. As described above, the thickness of the third primary color light emitting region is determined. The thickness t ₂ of the second primary light emitting region satisfying the equation (2-1) is, when converted in milligrams / cm ^2, has the same value as in Example 1, satisfying the formula (2-2) The thickness t ₃ of the third primary color light emitting region to be obtained has the same value as in Example 1 when converted in milligram / cm ² . The same applies to Examples 6 to 8 described later.

  In the color liquid crystal display device assembly of Example 5, the first primary color light (blue light) emitted from the light source during the operation of the color liquid crystal display device is the second substrate 20, the light reflecting film 214, and the first. Primary color light passing region 251, first light collecting member 255, smoothing film 215, second polarizing film 23, first subpixel (transparent second electrode 21, second alignment film 22, liquid crystal material 240, first alignment film 12 , The first liquid crystal cell composed of the transparent first electrode 11), the first polarizing film 13, and the first substrate 10, and emitted as the first primary color light (blue light). In addition, the first primary color light (blue light) emitted from the light source is the second substrate 20, the light reflecting film 214, the second primary color light emitting region 252, the second light collecting member 256, the smoothing film 215, and the second polarizing film. 23, a second subpixel (a second liquid crystal cell composed of a transparent second electrode 21, a second alignment film 22, a liquid crystal material 240, a first alignment film 12, and a transparent first electrode 11), a first polarizing film 13, The light passes through the first substrate 10 and is emitted as the second primary color light (green light). Further, the first primary color light (blue light) emitted from the light source is the second substrate 20, the light reflecting film 214, the third primary color light emitting region 253, the third light collecting member 257, the smoothing film 215, and the second polarized light. Film 23, third subpixel (transparent second electrode 21, second alignment film 22, liquid crystal material 240, first alignment film 12, third liquid crystal cell composed of transparent first electrode 11), first polarizing film 13 Then, the light passes through the first substrate 10 and is emitted as the third primary color light (red light). And as a result of the above, an observer can recognize as an image in a color liquid crystal display device.

  In the color liquid crystal display device assembly of Example 5, the second primary color light emitting region 252 is located between the portion of the first surface 20A of the second substrate 20 corresponding to the second subpixel and the portion of the transparent second electrode 21. The third primary color light emitting region 253 is disposed between the portion of the first surface 20A of the second substrate 20 corresponding to the third subpixel and the portion of the transparent second electrode 21, and The second light collecting member 256 is disposed between the second primary color light emitting region 252 and the transparent second electrode 21, and the third light collecting member 257 is disposed between the third primary color light emitting region 253 and the transparent second electrode 21. Is arranged. Therefore, optical crosstalk occurs in which light emitted from the second primary color light emitting region 252 and the third primary color light emitting region 253 enters a subpixel (liquid crystal cell) adjacent to the corresponding subpixel (liquid crystal cell). Can be reliably prevented.

  The color liquid crystal display device in the color liquid crystal display device assembly of Example 5 can be manufactured, for example, by the following method.

[Step-500]
Similar to [Step-100] of Example 1, except that a light absorption layer 254 is formed on a desired region of the light reflecting film 214 disposed on the first surface 20A of the second substrate 20, and then Then, the second primary color light emitting region 252 and the third primary color light emitting region 253 are formed on the region of the light reflecting film 214 not covered with the light absorbing layer 254. The portion of the first primary color light passage region 251 surrounded by the light absorption layer 254 may be left as it is or may be filled with a transparent resin.

[Step-510]
Thereafter, the first light collecting member 255, the second light collecting member 256, and the third light collecting member 257 are bonded onto the first primary color light passage region 251, the second primary color light emission region 252, and the third primary color light emission region 253, and further Then, a smoothing film 215 is bonded thereon.

[Step-520]
Next, the second polarizing film 23 is bonded onto the smoothing film 215, a switching element (not shown) made of TFT is formed on the second polarizing film 23 by a known method, and an insulating film (not shown) covering the entire surface. The transparent second electrode 21 is formed on the insulating film, the second alignment film 22 is formed on the transparent second electrode 21, and then the second alignment film 22 is subjected to alignment treatment. Thus, a rear panel can be obtained, and the manufacturing process of such a rear panel can be basically applied to a well-known manufacturing process.

[Step-530]
On the other hand, after the first polarizing film 13 is bonded to the first surface 10 </ b> A of the first substrate 10 and the transparent first electrode 11 is formed on the first polarizing film 13, the first alignment film 12 is formed on the transparent first electrode 11. Then, the first alignment film 12 is subjected to an alignment process. Thus, the front panel can be obtained, and the manufacturing process of such a front panel can be a well-known manufacturing process.

[Step-540]
Then, based on a well-known method, a color liquid crystal display device is assembled using a front panel, a rear panel, a liquid crystal material, a seal material (sealing material), and the like. Next, the color liquid crystal display device and the planar light source device are assembled based on a known method.

  The sixth embodiment is a modification of the fifth embodiment. As shown in a schematic partial cross-sectional view of FIG. 11, in the color liquid crystal display device assembly of Example 6, there is a gap between the first surface 10 </ b> A of the first substrate 10 and the transparent first electrode 11. A color filter 258 is arranged.

  In the color liquid crystal display device assembly of Example 6, the first primary color light (blue light) emitted from the light source during the operation of the color liquid crystal display device is the second substrate 20, the light reflecting film 214, and the first. Primary color light passing region 251, first light collecting member 255, smoothing film 215, second polarizing film 23, first subpixel (transparent second electrode 21, second alignment film 22, liquid crystal material 240, first alignment film 12 The first liquid crystal cell composed of the transparent first electrode 11), the color filter 258, the first substrate 10, and the first polarizing film 13, and emitted as the first primary color light (blue light). In addition, the first primary color light (blue light) emitted from the light source is the second substrate 20, the light reflecting film 214, the second primary color light emitting region 252, the second light collecting member 256, the smoothing film 215, and the second polarizing film. 23, a second subpixel (a second liquid crystal cell including the transparent second electrode 21, the second alignment film 22, the liquid crystal material 240, the first alignment film 12, and the transparent first electrode 11), a color filter 258, a first The light passes through the substrate 10 and the first polarizing film 13 and is emitted as the second primary color light (green light). Further, the first primary color light (blue light) emitted from the light source is the second substrate 20, the light reflecting film 214, the third primary color light emitting region 253, the third light collecting member 257, the smoothing film 215, and the second polarized light. Film 23, third subpixel (transparent second electrode 21, second alignment film 22, liquid crystal material 240, first alignment film 12, third liquid crystal cell composed of transparent first electrode 11), color filter 258, first The light passes through the first substrate 10 and the first polarizing film 13 and is emitted as the third primary color light (red light). And as a result of the above, an observer can recognize as an image in a color liquid crystal display device.

  Except for the above points, the configuration and structure of the color liquid crystal display device assembly of the sixth embodiment can be the same as the configuration and structure of the color liquid crystal display device assembly of the fifth embodiment. To do. In the color liquid crystal display device assembly of Example 6 shown in the drawing, the first polarizing film 13 is bonded to the second surface 10B of the first substrate 10 in the color liquid crystal display device. Further, the first polarizing film 13 may be disposed on the first surface 10 </ b> A of the first substrate 10.

  Even in Example 6, the smoothing film 215 is omitted, and a space is provided between the first light collecting member 255, the second light collecting member 256, the third light collecting member 257, and the second polarizing film 23. You may leave. Alternatively, the smoothing film 215, the first light collecting member 255, the second light collecting member 256, and the third light collecting member 257 are omitted, and the first primary color light passing region 251, the second primary color light emitting region 252 and the third primary color are omitted. The light emitting region 253 and the like can be configured to be in direct contact with the second polarizing film 23.

  Example 7 is also a modification of Example 5, but relates to a color liquid crystal display device assembly according to the second-B aspect of the present invention. In the color liquid crystal display device assembly of Example 7, the first surface 330A disposed between the rear panel and the planar light source device 60 and facing the rear panel, and the planar light source device 60 are arranged. A third substrate 330 having a second surface 330B facing each other is further provided.

  Also in the color liquid crystal display device assembly of Example 7, the light source is the first primary color light (corresponding to the first primary color among the three primary colors composed of the first primary color, the second primary color, and the third primary color ( (Blue light) is emitted. As shown in FIG. 12, a schematic partial cross-sectional view of the color liquid crystal display device assembly of Example 7 includes the first primary color light passage region 351, the second primary color light emission region 352, and the first Three primary color light emitting areas 353 are provided. Here, the second primary color light emitting region 352 is disposed between the portion of the first surface 330A of the third substrate 330 corresponding to the second subpixel and the portion of the second surface 20B of the second substrate 20, and the second The second primary color light (green light) is composed of second primary color light emitting particles that emit the second primary color light (green light) corresponding to the primary color (green), and is excited by the first primary color light (blue light) emitted from the light source. ) To illuminate the second sub-pixel. The third primary color light emitting region 353 is disposed between the portion of the first surface 330A of the third substrate 330 corresponding to the third subpixel and the portion of the second surface 20B of the second substrate 20, and the third primary color. The first primary color light (red light) is composed of the third primary color light emitting particles emitting the third primary color light (red light) corresponding to (red), and is excited by the first primary color light (blue light) emitted from the light source. To illuminate the third sub-pixel. The first primary color light passage region 351 is a region through which the first primary color light (blue light) emitted from the light source passes to the first subpixel. The region between the second primary color light emitting region 352 and the third primary color light emitting region 353, the region between the first primary color light passing region 351 and the second primary color light emitting region 352, the first primary color light passing region 351 and the third primary color. A light absorption layer (black matrix) 354 is formed in a region between the light emitting region 353.

  In the seventh embodiment, the second primary color light (which is disposed between the first surface 330 </ b> A of the third substrate 330 and the second surface 20 </ b> B of the second substrate 20) and emits light in the second primary color light emission region 352 ( Green light) is disposed between the second condensing member 356 that condenses the second subpixel and the first surface 330A of the third substrate 330 and the second surface 20B of the second substrate 20, A third light collecting member 357 for condensing the third primary color light (red light) emitted in the primary color light emitting region 353 to the third subpixel is provided.

  In the seventh embodiment, the first primary color light emitted from the light source is further disposed between the first surface 330A of the third substrate 330 and the second surface 20B of the second substrate 20 and is emitted from the first sub-color. A first condensing member 355 is further provided for condensing the light onto the pixels (that is, condensing the first primary color light that has passed through the first primary color light passage region 351 onto the first subpixel). The first light collecting member 355, the second light collecting member 356, and the third light collecting member 357 are formed by integrating a lens array in which a large number of gradient index lenses are arranged, as in the first embodiment. .

  In the color liquid crystal display device assembly of Example 7, the first primary color light passage region 351, the second primary color light emission region 352, the third primary color light emission region 353, and the first surface 330 A of the third substrate 330 are disposed. A light reflection film 314 that reflects the second primary color light and the third primary color light is disposed. In addition, the second polarizing film 23 is disposed between the first light collecting member 355, the second light collecting member 356, the third light collecting member 357, and the second surface 20B of the second substrate 20, Further, a smoothing film 315 is disposed between the first light collecting member 355, the second light collecting member 356, the third light collecting member 357, and the second polarizing film 23. May be omitted and a space may be left between the first light collecting member 355, the second light collecting member 356, the third light collecting member 357, and the second polarizing film 23. In some cases, the smoothing film 315, the first light collecting member 355, the second light collecting member 356, and the third light collecting member 357 are omitted, and the first primary color light passing region 351, the second primary color light emitting region 352, and the third The primary color light emitting region 353 and the like can be configured to be in direct contact with the second polarizing film 23.

  In Example 7, the thickness of the second substrate 20 was set to 0.1 mm.

  Except for the above points, the configuration and structure of the color liquid crystal display device assembly of Example 7 may be the same as the configuration and structure of the color liquid crystal display device assembly of Example 1, Example 3, and Example 5. Since it can, detailed explanation is omitted. Note that the first polarizing film 13 may be disposed on the first surface 10 </ b> A of the first substrate 10.

  In the color liquid crystal display device assembly of Example 7, the first primary color light (blue light) emitted from the light source during the operation of the color liquid crystal display device is the third substrate 330, the light reflecting film 314, the first light. Primary color light passing region 351, first light collecting member 355, smoothing film 315, second polarizing film 23, second substrate 20, first subpixel (transparent second electrode 21, second alignment film 22, liquid crystal material 340, The first alignment film 12 and the first liquid crystal cell composed of the transparent first electrode 11), the first polarizing film 13, and the first substrate 10 pass through and are emitted as the first primary color light (blue light). In addition, the first primary color light (blue light) emitted from the light source is the third substrate 330, the light reflecting film 314, the second primary color light emitting region 352, the second light collecting member 356, the smoothing film 315, and the second polarizing film. 23, the second substrate 20, the second subpixel (the second liquid crystal cell composed of the transparent second electrode 21, the second alignment film 22, the liquid crystal material 340, the first alignment film 12, and the transparent first electrode 11), the second The light passes through the first polarizing film 13 and the first substrate 10 and is emitted as the second primary color light (green light). Furthermore, the first primary color light (blue light) emitted from the light source is transmitted through the third substrate 330, the light reflecting film 314, the third primary color light emitting region 353, the third light collecting member 357, the smoothing film 315, and the second polarized light. Film 23, second substrate 20, third subpixel (transparent second electrode 21, second alignment film 22, liquid crystal material 340, first alignment film 12, third liquid crystal cell composed of transparent first electrode 11), The light passes through the first polarizing film 13 and the first substrate 10 and is emitted as the third primary color light (red light). And as a result of the above, an observer can recognize as an image in a color liquid crystal display device.

  In the color liquid crystal display device assembly of Example 7, the second primary color light emitting region 352 includes a portion of the first surface 330A of the third substrate 330 and a portion of the second surface 20B of the second substrate 20 corresponding to the second subpixel. The third primary color light emitting region 353 is located between the portion of the first surface 330A of the third substrate 330 corresponding to the third subpixel and the portion of the second surface 20B of the second substrate 20. The second light collecting member 356 is arranged between the first surface 330A of the third substrate 330 and the second surface 20B of the second substrate 20, and the third light collecting member 357 is It is disposed between the first surface 330A of the third substrate 330 and the second surface 20B of the second substrate 20. Therefore, optical crosstalk occurs in which light emitted from the second primary color emission region 352 or the third primary color emission region 353 enters a subpixel (liquid crystal cell) adjacent to the corresponding subpixel (liquid crystal cell). Can be reliably prevented.

  The color liquid crystal display device in the color liquid crystal display device assembly of Example 7 can be manufactured, for example, by the following method.

[Step-700]
The front panel is manufactured by a well-known process in the same manner as [Step-530] of the fifth embodiment. On the other hand, the rear panel is manufactured by a known process in the same manner as in [Step-130] of the first embodiment.

[Step-710]
Meanwhile, a light absorption layer 354 is formed on a desired region of the light reflection film 314 disposed on the first surface 330A of the third substrate 330, and then the light reflection film 314 that is not covered by the light absorption layer 354. A second primary color light emission region 352 and a third primary color light emission region 353 are formed on the first region. Thereafter, the first light collecting member 355, the second light collecting member 356, and the third light collecting member 357 are bonded onto the first primary color light passage region 351, the second primary color light emission region 352, and the third primary color light emission region 353, and further Then, a smoothing film 315 is bonded thereon. The portion of the first primary color light passage region 351 surrounded by the light absorption layer 354 may be left as it is or may be filled with a transparent resin.

[Step-720]
Thereafter, the rear panel and the third substrate 330 are assembled by bonding the second polarizing film 23 and the smoothing film 315 bonded to the second surface 20 </ b> B of the second substrate 20. Then, based on a known method, a color liquid crystal display device is assembled using a front panel, a rear panel, a liquid crystal material, a seal material (sealing material), and the like. Next, the color liquid crystal display device and the planar light source device are assembled based on a known method.

  The eighth embodiment is a modification of the seventh embodiment. As shown in a schematic partial cross-sectional view in FIG. 13, in the color liquid crystal display device assembly of Example 8, there is a gap between the first surface 10 </ b> A of the first substrate 10 and the transparent first electrode 11. A color filter 358 is disposed.

  Except for the above points, the configuration and structure of the color liquid crystal display device assembly of the eighth embodiment can be the same as the configuration and structure of the color liquid crystal display device assembly of the seventh embodiment. To do. Note that the first polarizing film 13 may be disposed on the first surface 10 </ b> A of the first substrate 10.

  In the color liquid crystal display device assembly of Example 8, the first primary color light (blue light) emitted from the light source during the operation of the color liquid crystal display device is the third substrate 330, the light reflecting film 314, the first light. Primary color light passing region 351, first light collecting member 355, smoothing film 315, second polarizing film 23, second substrate 20, first subpixel (transparent second electrode 21, second alignment film 22, liquid crystal material 340, The first liquid crystal cell comprising the first alignment film 12 and the transparent first electrode 11), the color filter 358, the first substrate 10, and the first polarizing film 13, and emitted as the first primary color light (blue light). Is done. In addition, the first primary color light (blue light) emitted from the light source is the third substrate 330, the light reflecting film 314, the second primary color light emitting region 352, the second light collecting member 356, the smoothing film 315, and the second polarizing film. 23, the second substrate 20, the second subpixel (the second liquid crystal cell composed of the transparent second electrode 21, the second alignment film 22, the liquid crystal material 340, the first alignment film 12, and the transparent first electrode 11), color The light passes through the filter 358, the first substrate 10, and the first polarizing film 13, and is emitted as the second primary color light (green light). Furthermore, the first primary color light (blue light) emitted from the light source is transmitted through the third substrate 330, the light reflecting film 314, the third primary color light emitting region 353, the third light collecting member 357, the smoothing film 315, and the second polarized light. Film 23, second substrate 20, third subpixel (transparent second electrode 21, second alignment film 22, liquid crystal material 340, first alignment film 12, third liquid crystal cell composed of transparent first electrode 11), The light passes through the color filter 358, the first substrate 10, and the first polarizing film 13, and is emitted as the third primary color light (red light). And as a result of the above, an observer can recognize as an image in a color liquid crystal display device.

  Even in Example 8, the smoothing film 315 is omitted, and a space is provided between the first light collecting member 355, the second light collecting member 356, the third light collecting member 357, and the second polarizing film 23. Alternatively, the smoothing film 315, the first light collecting member 355, the second light collecting member 356, and the third light collecting member 357 may be omitted, and the first primary color light passing region 351 and the second primary color light emission may be omitted. The region 352, the third primary color light emitting region 353, and the like may be configured to be in direct contact with the second polarizing film 23.

  In the first to eighth embodiments, as the planar light source device 60, the conventional direct type planar light source device shown in FIG. A planar light source device 420 of a driving method (partial driving method) may be employed.

  The divisional drive type planar light source device assumes that the display area of the color liquid crystal display device is divided into P × Q virtual display area units, and P corresponding to these P × Q display area units. The light emission state of P × Q planar light source units is individually controlled.

As shown in the conceptual diagram in FIG. 14, the color liquid crystal display device 410 has M ₀ × N ₀ pixels, that is, M ₀ along the first direction and N ₀ along the second direction. A display area 411 arranged in a two-dimensional matrix is provided. Here, it is assumed that the display area 411 is divided into P × Q virtual display area units 412. Each display area unit 412 is composed of a plurality of pixels. Specifically, for example, the image display resolution satisfies the HD-TV standard, and the number M ₀ × N ₀ of pixels (pixels) arranged in a two-dimensional matrix is represented by (M ₀ , N ₀ ). For example, (1920, 1080). In addition, a display area 411 (indicated by a one-dot chain line in FIG. 14) composed of pixels arranged in a two-dimensional matrix is divided into P × Q virtual display area units 412 (the boundary is indicated by a dotted line). ing. The value of (P, Q) is (19, 12), for example. However, in order to simplify the drawing, the number of display area units 412 (and planar light source units 422 described later) in FIG. 14 is different from this value. Each display area unit 412 is composed of a plurality of (M × N) pixels, and the number of pixels constituting one display area unit 412 is, for example, about 10,000. Each pixel is composed of a plurality of sub-pixels each emitting a different color. More specifically, each pixel (pixel) includes a first subpixel (blue light emitting subpixel, subpixel [B]), a second subpixel (green light emitting subpixel, subpixel [G]), and It is composed of three sub-pixels (sub-pixels) of three sub-pixels (red light emission sub-pixel, sub-pixel [R]). The color liquid crystal display device 410 is line-sequentially driven. More specifically, the color liquid crystal display device 410 has scanning electrodes (extending along the first direction) and data electrodes (extending along the second direction) intersecting in a matrix. Then, a scanning signal is input to the scanning electrode to select and scan the scanning electrode, and an image is displayed based on the data signal (a signal based on the control signal) input to the data electrode to constitute one screen.

  Specifically, the color liquid crystal display device 410 has the structure described in the first to eighth embodiments or modifications thereof.

  The direct-type planar light source device (backlight) 420 includes P × Q planar light source units 422 corresponding to P × Q virtual display area units 412, and each planar light source unit 422 includes a planar light source unit 422. The display area unit 412 corresponding to the light source unit 422 is illuminated from the back. The light sources provided in the planar light source unit 422 are individually controlled. However, the light source luminance of the planar light source unit 422 is not affected by the light emission state of the light sources provided in the other planar light source units 422. Although the planar light source device 420 is located below the color liquid crystal display device 410, the color liquid crystal display device 410 and the planar light source device 420 are displayed separately in FIG. The arrangement and arrangement of the planar light source units 422 and the like in the planar light source device 420 are schematically shown in FIG. 16A, and the color liquid crystal display device assembly including the color liquid crystal display device 410 and the planar light source device 420 is shown. A schematic partial cross-sectional view is shown in FIG. The light source comprises a light emitting diode 423 driven based on a pulse width modulation (PWM) control method. The luminance of the planar light source unit 422 is increased / decreased by duty ratio increasing / decreasing control in the pulse width modulation control of the light emitting diode 423 constituting the planar light source unit 422.

  As shown in the schematic partial cross-sectional view of the color liquid crystal display device assembly in FIG. 16B, the planar light source device 420 includes a housing 431 including an outer frame 433 and an inner frame 434. ing. The end portion of the color liquid crystal display device 410 is held by the outer frame 433 and the inner frame 434 so as to be sandwiched between the spacers 435A and 435B. A guide member 436 is disposed between the outer frame 433 and the inner frame 434 so that the color liquid crystal display device 410 sandwiched between the outer frame 433 and the inner frame 434 does not shift. A light diffusing plate 441 is attached to the inner frame 434 via a spacer 435C and a bracket member 437 inside and above the housing 431. On the light diffusion plate 441, an optical function sheet group such as a diffusion sheet 442, a prism sheet 443, and a polarization conversion sheet 444 is laminated.

  A reflection sheet 445 is provided in the lower portion of the housing 431. Here, the reflection sheet 445 is disposed so that the reflection surface thereof faces the light diffusion plate 441, and is attached to the bottom surface 432A of the housing 431 via an attachment member (not shown). The reflection sheet 445 is composed of, for example, a silver enhanced reflection film having a structure in which a white polyethylene terephthalate film (MCPET), a silver reflection film, a low refractive index film, and a high refractive index film are sequentially laminated on a sheet base material. Can do. The reflective sheet 445 reflects light emitted from the light emitting diode 423 and light reflected by the side surface 432B of the housing 431 or the partition wall 421 illustrated in FIG. Thus, from the light emitting diode 423 that illuminates the diffusion regions 51 and 151 or the first primary color light passing regions 251 and 351, the second primary color light emitting regions 52, 152, 252 and 352, and the third primary color light emitting regions 53, 153, 253 and 353. The emitted first primary color light (blue light) is used as illumination light. The illumination light is emitted from the planar light source unit 422 through the light diffusion plate 441, passes through the optical function sheet group such as the diffusion sheet 442, the prism sheet 443, and the polarization conversion sheet 444, and passes through the color liquid crystal display device 410 from the back side. Illuminate.

  In the vicinity of the bottom surface 432A of the housing 431, a photodiode 424 which is an optical sensor is arranged. Here, one photosensor (photodiode 424) is arranged in one planar light source unit 422. The luminance and chromaticity of the light emitting diode 423 are measured by a photodiode 424 which is an optical sensor.

  As shown in FIGS. 14 and 15, the driving circuit for driving the planar light source device 420 and the color liquid crystal display device 410 based on the driving signal from the outside (display circuit) is based on the pulse width modulation control method. The planar light source device control circuit 450 and the planar light source unit driving circuit 460 for performing on / off control of the light emitting diode 423 constituting the planar light source device 420 and the liquid crystal display device driving circuit 470 are configured.

  The planar light source device control circuit 450 includes an arithmetic circuit 451 and a storage device (memory) 452. On the other hand, the planar light source unit driving circuit 460 includes an arithmetic circuit 461, a storage device (memory) 462, an LED driving circuit 463, a photodiode control circuit 464, a switching element 465 including an FET, and a light emitting diode driving power source (constant current source) 466. Consists of. These circuits constituting the planar light source device control circuit 450 and the planar light source unit drive circuit 460 can be known circuits. On the other hand, the liquid crystal display device driving circuit 470 for driving the color liquid crystal display device 410 is formed of a known circuit such as a timing controller 471. The color liquid crystal display device 410 is provided with a gate driver, a source driver, and the like (not shown) for driving switching elements composed of TFTs constituting the liquid crystal cell.

  Then, the light emission state of the light emitting diode 423 in an image display frame is measured by the photodiode 424, and the output from the photodiode 424 is input to the photodiode control circuit 464. In the photodiode control circuit 464 and the arithmetic circuit 461, For example, data (signals) as luminance and chromaticity of the light emitting diode 423 is sent to the LED driving circuit 463, and a feedback mechanism is formed in which the light emitting state of the light emitting diode 423 in the next image display frame is controlled. Is done.

  A current detecting resistor r is inserted downstream of the light emitting diode 423 in series with the light emitting diode 423, and a current flowing through the resistor r is converted into a voltage, and a voltage drop in the resistor r becomes a predetermined value. As described above, the operation of the light emitting diode drive power supply 466 is controlled under the control of the LED drive circuit 463. Here, in FIG. 15, a single light emitting diode driving power source (constant current source) 466 is depicted, but actually, a light emitting diode driving power source 466 for driving each of the light emitting diodes 423 is arranged. ing. In FIG. 15, three sets of planar light source units 422 are shown. Although FIG. 15 shows a configuration in which one planar light source unit 422 is provided with one light emitting diode 423, the number of light emitting diodes 423 constituting one planar light source unit 422 is limited to one. Not. From the light emitting diode 423, the first primary color light (blue light) corresponding to the first primary color is emitted.

  A display area 411 composed of pixels arranged in a two-dimensional matrix is divided into P × Q display area units. When this state is expressed by “row” and “column”, Q rows × It can be said that the display area unit is divided into P columns. The display area unit 412 is composed of a plurality of (M × N) pixels. When this state is expressed by “rows” and “columns”, it is composed of pixels of N rows × M columns. I can say. Furthermore, the third sub-pixel (sub-pixel [R]), the second light-emitting sub-pixel (sub-pixel [G]), and the first light-emitting sub-pixel (sub-pixel [B]) are collectively displayed as “sub”. Pixel [R, G, B] ”may be referred to, and for control of the operation of the sub-pixel [R, G, B] (specifically, for example, control of light transmittance (aperture ratio)) The third sub-pixel / control signal, the second sub-pixel / control signal, and the first sub-pixel / control signal input to the sub-pixel [R, G, B] are collectively referred to as “control signal [R, G, B] ”and the third sub-pixel driving signal input from the outside to drive the sub-pixels [R, G, B] constituting the display area unit. Subpixel drive signal and first subpixel drive Together collectively signal may be referred to as a "drive signals [R, G, B]".

As described above, each pixel has three types of sub-pixels (sub-pixel [R]), second sub-pixel (sub-pixel [G]), and first sub-pixel (sub-pixel [B]). Subpixels are configured as one set. In the following description of the embodiments, it is assumed that the luminance control (gradation control) of each of the sub-pixels [R, G, B] is 8-bit control and is performed in 2 ⁸ steps from 0 to 255. Therefore, the value of the drive signal [R, G, B] input to the liquid crystal display device drive circuit 470 to drive each of the sub-pixels [R, G, B] in each pixel constituting each display area unit 412. x _R, x _G, each x _B, takes a value of 2 ⁸ steps. The value PS of the pulse width modulation output signal for controlling the respective light emission time of the light emitting diode 423 constituting each planar light source unit also takes a value of 2 ⁸ steps of 0 to 255. However, the present invention is not limited to this. For example, 10-bit control can be performed in 2 ¹⁰ stages from 0 to 1023. In this case, if an 8-bit numerical expression is multiplied by, for example, 4 times Good.

A control signal for controlling the light transmittance Lt of each pixel is supplied from the driving circuit to each pixel. Specifically, a control signal [R, G, B] for controlling the light transmittance Lt of each of the sub-pixels [R, G, B] is supplied to each of the sub-pixels [R, G, B]. Supplied from the drive circuit 470. That is, in the liquid crystal display device drive circuit 470, the control signal [R, G, B] is generated from the input drive signal [R, G, B], and the control signal [R, G, B] is subpixel. [R, G, B] are supplied (output). Since the light source luminance Y ₂ that is the luminance of the planar light source unit 422 is changed for each image display frame, the control signal [R, G, B] is, for example, the value of the drive signal [R, G, B]. Values X _R-corr , X _G-corr , and X _B-corr obtained by performing correction (compensation) based on changes in the light source luminance Y _{2 with} respect to the values obtained by raising x _R , x _G , and x _B to the power of 2.2. Have. Then, a control signal [R, G, B] is sent from the timing controller 471 constituting the liquid crystal display device driving circuit 470 to the gate driver and source driver of the color liquid crystal display device 410 by a known method. The switching elements constituting each subpixel are driven based on [R, G, B], and a desired voltage is applied to the transparent first electrode 11 and the transparent second electrode 21 constituting the liquid crystal cell. The light transmittance (aperture ratio) Lt of the pixel is controlled. Here, as the values X _R-corr , X _G-corr , and X _B-corr of the control signal [R, G, B] are larger, the light transmittance (aperture ratio) Lt of the sub-pixel [R, G, B]. And the value of the luminance (display luminance y) of the display area corresponding to the subpixel [R, G, B] increases. That is, an image (usually a kind of dot-like) composed of light passing through the subpixels [R, G, B] is bright.

The display luminance y and the light source luminance Y ₂ are controlled for each image display frame, for each display area unit, and for each planar light source unit in the image display of the color liquid crystal display device 410. Further, the operation of the color liquid crystal display device 410 and the operation of the planar light source device 420 within one image display frame are synchronized. Note that the number of image information (images per second) sent to the drive circuit as electrical signals per second is the frame frequency (frame rate), and the inverse of the frame frequency is the frame time (unit: seconds).

  Hereinafter, a driving method of the surface light source device of the split driving method will be described with reference to FIGS. FIG. 17 is a flowchart for explaining a driving method of the surface light source device of the split driving method.

Here, a control signal for controlling the light transmittance Lt of each pixel is supplied from the drive circuit to each pixel. More specifically, a control signal [R, G, B] that controls the light transmittance Lt of each of the sub-pixels [R, G, B] is supplied to each of the sub-pixels [R, G, B] constituting each pixel. B] is supplied from the drive circuit 470. In each of the planar light source units 422, driving input to the driving circuits 450, 460, and 470 to drive all the pixels (sub-pixels [R, G, B]) constituting each display area unit 412. A control signal corresponding to a drive signal having a value equal to the in _- display area unit / drive signal maximum value x _U-max which is the maximum value x _R , x _G , x _B of the signals [R, G, B]. It is assumed that the brightness (light transmittance, display brightness at the first specified value Lt ₁ , second specified value y ₂ ) of the pixel (sub-pixel [R, G, B]) is obtained. Further, the luminance of the light source constituting the planar light source unit 422 corresponding to the display area unit 412 is controlled by the planar light source device control circuit 450 and the planar light source unit drive circuit 460. Specifically, the light source luminance Y ₂ may be controlled so that the display luminance y ₂ can be obtained when the light transmittance (aperture ratio) of the sub-pixel is the light transmittance · the first specified value Lt _1. (For example, it may be reduced). That is, for example, the light source luminance Y ₂ of the planar light source unit 422 may be controlled for each image display frame so as to satisfy the following expression (A). Note that Y ₂ ≦ Y ₁ .

Y ₂ · Lt ₁ = Y ₁ · Lt ₂ (A)

[Step-100]
A drive signal [R, G, B] and a clock signal CLK for one image display frame sent from a known display circuit such as a scan converter are input to the planar light source device control circuit 450 and the liquid crystal display device drive circuit 470. (See FIG. 14). The drive signal [R, G, B] is an output signal from the image pickup tube, for example, when y ′ is the amount of light input to the image pickup tube, and is output from, for example, a broadcasting station or the like, and the light transmittance Lt of the pixel. Is a drive signal that is also input to the liquid crystal display device drive circuit 470, and can be expressed as a function of the input light quantity y ′ to the 0.45th power. The values x _R , x _G , x _B of the drive signals [R, G, B] for one image display frame input to the planar light source device control circuit 450 constitute the planar light source device control circuit 450. The data is temporarily stored in a storage device (memory) 452. Further, the values x _R , x _G , x _B of the drive signals [R, G, B] for one image display frame input to the liquid crystal display device driving circuit 470 are also stored in the liquid crystal display device driving circuit 470. (Not shown) once stored.

[Step-110]
Next, in the arithmetic circuit 451 constituting the surface light source device control circuit 450, the value of the drive signal [R, G, B] stored in the storage device 452 is read and the (p, q) th [however, first , P = 1, q = 1] for driving the sub-pixels [R, G, B] in all the pixels constituting the (p, q) -th display region unit 412. The calculation circuit 451 obtains the display area unit drive signal maximum value x _U-max , which is the maximum value among the values x _R , x _G , and x _B of the drive signal [R, G, B]. Then, storing the-drive signal maximum value x _U-max display area unit, the storage device 452. This step is performed for all m = 1, 2,..., M, n = 1, 2,..., N, that is, for M × N pixels.

For example, when x _R is a value corresponding to “110”, x _G is a value corresponding to “150”, and x _B is a value corresponding to “50”, x _U-max is “150”. Is a value corresponding to.

This operation, (p, q) from = (1,1) (P, Q ) repeatedly until the display area unit · drive signal maximum value x _U-max in all the display area units 412, the storage device 452 Remember.

[Step-120]
Then, the control signals [R, G, B] is subpixels [R, which corresponds to a drive signal having a value equal to the display area unit · drive signal maximum value _{x U-max [R, G} , B], G, B ] Corresponding to the display area unit 412 so that the brightness (light transmittance, display brightness at the first specified value Lt ₁ , second specified value y ₂ ) is obtained by the planar light source unit 422. The light source luminance Y ₂ of the planar light source unit 422 is increased or decreased under the control of the planar light source unit drive circuit 460. Specifically, the light source luminance Y ₂ may be controlled for each image display frame and for each planar light source unit so as to satisfy the following expression (A). More specifically, the luminance of the light emitting diode 423 is controlled based on the equation (B) that is the light source luminance control function g (x _nol-max ), and the light source luminance Y ₂ is set so as to satisfy the equation (A). Control is sufficient. A conceptual diagram of such control is shown in FIGS. 18 (A) and 18 (B). However, as will be described later, it is desirable to perform correction based on the influence of the other planar light source unit 422 on the light source luminance Y ₂ as necessary. It should be noted that these relations regarding the control of the light source luminance Y ₂ , that is, the value of the control signal corresponding to the drive signal having a value equal to the maximum value x _U-max in the display area unit and the drive signal maximum value x _U-max . , Display luminance when assuming that such a control signal is supplied to the sub-pixel, the second specified value y ₂ , the light transmittance (aperture ratio) of each sub-pixel at this time [light transmittance, the second specified value Lt ₂ ], in the planar light source unit 422 such that the display brightness and the second specified value y ₂ can be obtained when the light transmittance (aperture ratio) of each subpixel is the light transmittance and the first specified value Lt ₁ . The relationship between the brightness control parameters may be obtained in advance and stored in the storage device 452 or the like.

Y ₂ · Lt ₁ = Y ₁ · Lt ₂ (A)
g (x _nol-max ) = a ₁ · (x _nol-max ) ^2.2 + a ₀ (B)

Here, the maximum value of the drive signal (drive signal [R, G, B]) input to the liquid crystal display device drive circuit 470 to drive each of the sub-pixels [R, G, B] is set to x _max . When
x _nol-max ≡ x _U-max / x _max
And a ₁ and a ₀ are constants,
a ₁ + a ₀ = 1
0 <a ₀ <1, 0 <a ₁ <1
Can be expressed as For example,
a ₁ = 0.99
a ₀ = 0.01
And it is sufficient. The value x _R of the drive signals [R, G, B], x G, each x _B, and takes a value of 2 ⁸ steps, the value of x _max is a value corresponding to "255".

  By the way, in the planar light source device 420, for example, assuming brightness control of the planar light source unit 422 of (p, q) = (1, 1), other P × Q planar light source units. It may be necessary to consider the effects from 422. Since the influence that the planar light source unit 422 receives from the other planar light source units 422 is known in advance by the light emission profile of each planar light source unit 422, the difference can be calculated by back calculation, and as a result, the correction is performed. Is possible. The basic form of calculation will be described below.

The luminance (light source luminance Y ₂ ) required for the P × Q planar light source units 422 based on the requirements of the equations (A) and (B) is represented by a matrix [L _PxQ ]. In addition, the luminance of a certain planar light source unit obtained when only a certain planar light source unit is driven and the other planar light source units are not driven is compared with P × Q planar light source units 422. Obtain in advance. Such luminance is represented by a matrix [L ′ _PxQ ]. Further, the correction coefficient is represented by a matrix [α _PxQ ]. Then, the relationship between these matrices can be expressed by the following equation (C-1). The correction coefficient matrix [α _PxQ ] can be obtained in advance.
[L _PxQ ] = [L ′ _PxQ ] · [α _PxQ ] (C-1)
Therefore, what is necessary is just to obtain | _require matrix [L' _PxQ ] from Formula (C-1). The matrix [L ′ _PxQ ] can be obtained from the inverse matrix operation. That is,
[L ′ _PxQ ] = [L _PxQ ] · [α _PxQ ] ⁻¹ (C-2)
Should be calculated. Then, the light source (light emitting diode 423) provided in each planar light source unit 422 may be controlled so that the luminance represented by the matrix [L ′ _PxQ ] is obtained. May be performed using information (data table) stored in the storage device (memory) 462. In the control of the light emitting diode 423, since the value of the matrix [L ′ _PxQ ] cannot take a negative value, it is needless to say that the calculation result needs to be kept in a positive region. Therefore, the solution of equation (C-2) may not be an exact solution but an approximate solution.

Thus, the matrix [L _PxQ ] obtained based on the values of the expressions (A) and (B) obtained in the arithmetic circuit 451 constituting the surface light source device control circuit 450, and the matrix [α _PxQ ], As described above, a luminance matrix [L ′ _PxQ ] when it is assumed that the planar light source unit is driven alone is obtained. Further, based on the conversion table stored in the storage device 452, 0 to Convert to a corresponding integer (value of the pulse width modulation output signal) in the range of 255. Thus, the arithmetic circuit 451 constituting the planar light source device control circuit 450 can obtain the value PS of the pulse width modulation output signal for controlling the light emission time of the light emitting diode 423 in the planar light source unit 422.

[Step-130]
Next, the value PS of the pulse width modulation output signal obtained in the arithmetic circuit 451 constituting the surface light source device control circuit 450 is the value of the surface light source unit drive circuit 460 provided corresponding to the surface light source unit 422. The data is sent to the storage device 462 and stored in the storage device 462. The clock signal CLK is also sent to the planar light source unit drive circuit 460 (see FIG. 15).

[Step-140]
Then, based on the value PS of the pulse width modulation output signal, the arithmetic circuit 461 determines the on time t _ON and the off time t _OFF of the light emitting diode 423 constituting the planar light source unit 422. still,
t _ON + t _OFF = constant value t _Const
It is. The duty ratio in driving based on pulse width modulation of the light emitting diode is
t _ON / (t _ON + t _OFF ) = t _ON / t _Const
Can be expressed as

Then, a signal corresponding to the _ON time t _ON of the light emitting diode 423 constituting the planar light source unit 422 is sent to the LED drive circuit 463, and based on the value of the signal corresponding to the _ON time t _ON from the LED drive circuit 463. The switching element 465 is turned on for the on time t _ON , and the LED driving current from the light emitting diode driving power supply 466 is caused to flow to the light emitting diode 423. As a result, each light emitting diode 423 emits light for an on time t _ON in one image display frame. Thus, each display area unit 412 is illuminated at a predetermined illuminance.

The states thus obtained are indicated by solid lines in FIGS. 19A and 19B. FIG. 19A shows a drive signal input to the liquid crystal display device drive circuit 470 to drive the subpixels. FIG. 19 schematically shows the relationship between the value obtained by raising the value of x to the power of 2.2 (x′≡x ^2.2 ) and the duty ratio (= t _ON / t _Const ). It is a figure which shows typically the relationship between the value X of the control signal for controlling the light transmittance Lt, and the display brightness | luminance y.

[Step-150]
On the other hand, the values x _R , x _G , x _B of the drive signals [R, G, B] input to the liquid crystal display device drive circuit 470 are sent to the timing controller 471. A control signal [R, G, B] corresponding to the drive signal [R, G, B] is supplied (output) to the sub-pixel [R, G, B]. The values X _R and X _{G of the} control signal [R, G, B] generated by the timing controller 471 of the liquid crystal display device driving circuit 470 and supplied from the liquid crystal display device driving circuit 470 to the subpixels [R, G, B]. , X _B and the values x _R , x _G , x _{B of} the drive signals [R, G, B] are expressed by the following equations (D-1), (D-2), and (D-3). There is a relationship. However, _{b1_R} , _{b0_R} , _{b1_G} , _{b0_G} , _{b1_B} , _{b0_B} are constants. Further, since the light source luminance Y ₂ of the planar light source unit 422 is changed for each image display frame, the control signal [R, G, B] basically sets the value of the drive signal [R, G, B] to 2. A value obtained by performing correction (compensation) based on a change in the light source luminance Y _{2 with} respect to the squared value. That is, since the light source luminance Y ₂ for each image display frame is changed, the light source luminance Y ₂ (≦ Y ₁₎ control signal so that the display luminance · second specified value y ₂ obtained in [R, G, B] Values X _R , X _G , and X _B are determined and corrected (compensated) to control the light transmittance (aperture ratio) Lt of the pixel or sub-pixel. Here, the functions f _R , f _G , and f _B in the expressions (D-1), (D-2), and (D-3) are functions obtained in advance for performing such correction (compensation). is there.

X _R = f _R (b 1 _—R · x _R ^2.2 + b 0 _—R ) (D−1)
X _G = f _G (b 1 _—G · x _G ^2.2 + b 0 _—G ) (D-2)
X _B = f _B (b 1 _—B · x _B ^2.2 + b 0 _—B ) (D-3)

  Thus, the image display operation in one image display frame is completed.

  When an edge light type (side light type) planar light source device is employed, as shown in a conceptual diagram in FIG. 20, for example, a light guide plate 510 made of polycarbonate resin has a first surface (bottom surface) 511, the first A second surface (top surface) 513 facing the surface 511, a first side surface 514, a second side surface 515, a third side surface 516 facing the first side surface 514, and a fourth side surface facing the second side surface 514. . A more specific shape of the light guide plate as a whole is a wedge-shaped truncated quadrangular pyramid shape, and two opposing side surfaces of the truncated quadrangular pyramid correspond to the first surface 511 and the second surface 513, and the truncated four-pyramid shape. The bottom surface of the pyramid corresponds to the first side surface 514. An uneven portion 512 is provided on the surface portion of the first surface 511. The cross-sectional shape of the continuous convex and concave portions when the light guide plate 510 is cut in a virtual plane perpendicular to the first surface 511 in the first primary color light incident direction to the light guide plate 510 is a triangle. That is, the uneven portion 512 provided on the surface portion of the first surface 511 has a prism shape. The second surface 513 of the light guide plate 510 may be smooth (that is, may be a mirror surface), or may be provided with a blast texture having a diffusion effect (that is, a fine uneven surface). A reflective member 520 is disposed to face the first surface 511 of the light guide plate 510. In addition, a color liquid crystal display device is disposed to face the second surface 513 of the light guide plate 510. Further, a diffusion sheet 531 and a prism sheet 532 are disposed between the color liquid crystal display device and the second surface 513 of the light guide plate 510. The first primary color light emitted from the light source 500 enters the light guide plate 510 from the first side surface 514 of the light guide plate 510 (for example, the surface corresponding to the bottom surface of the truncated quadrangular pyramid), and the uneven portion 512 of the first surface 511. And is scattered from the first surface 511, reflected by the reflecting member 520, reentered the first surface 511, emitted from the second surface 513, and passes through the diffusion sheet 531 and the prism sheet 532. Then, the color liquid crystal display devices of Examples 1 to 8 are irradiated.

  As mentioned above, although this invention was demonstrated based on the preferable Example, this invention is not limited to these Examples. The configuration and structure of the color liquid crystal display device assembly, the color liquid crystal display device, the planar light source device, the planar light source unit, the color liquid crystal display device assembly, and the drive circuit described in the embodiments are examples, and constitute these. Members, materials, etc. are also examples, and can be changed as appropriate.

As the light source, a fluorescent lamp or a semiconductor laser that emits blue light as the first primary color light may be employed instead of the light emitting diode. In this case, 450 nm can be exemplified as the wavelength λ ₁ of the first primary color light corresponding to the first primary color (blue) emitted from the fluorescent lamp, and the green light emitting particle corresponding to the second primary color light emitting particle is, for example, SrGa _The green light emitting phosphor particles made of ₂ S ₄ : Eu may be used, and the red light emitting particles corresponding to the third primary color light emitting particles may be red light emitting phosphor particles made of, for example, CaS: Eu. Alternatively, when a semiconductor laser is used, 457 nm can be exemplified as the wavelength λ ₁ of the first primary color light corresponding to the first primary color (blue) emitted by the semiconductor laser. The corresponding green light emitting particles may be green light emitting phosphor particles made of, for example, SrGa ₂ S ₄ : Eu, and the red light emitting particles corresponding to the third primary color light emitting particles are, for example, red light emitting phosphor particles made of CaS: Eu. And it is sufficient. When a fluorescent lamp is used, a portion of the inner wall of the fluorescent lamp facing the side surface of the color liquid crystal display assembly or the light guide plate (for example, the shape of the inner wall of the fluorescent lamp when cut along a virtual plane perpendicular to the axis is circular) In this case, for example, a fluorescent lamp coated with blue light emitting phosphor particles can be used only on the color liquid crystal display device assembly or the side surface of the light guide plate, for example, a semicircular portion. In some cases, the light passes through the first primary color light passage areas 251 and 351, the second primary color light emission areas 52, 152, 252, and 352, and the third primary color light emission areas 53, 153, 253, and 353. You may arrange | position a light-diffusion film in a suitable position.

(A) of FIG. 1 uses (Sr, Ba) ₂ SiO ₄ : Eu as the second primary color light emitting particles (green light emitting phosphor particles), and has a thickness t ₂ = 23.05 mg / cm ² (six layers). And the same luminescent particles as the second primary color luminescent particles, thickness t ₂ = 7.84 mg / cm ² (4 layers), 5.88 mg / cm ² (3 layers) FIG. 1B is a graph in which a part of the two spectra shown in FIG. 1A is enlarged. FIG. 2A shows a case where SrGa ₂ S ₄ : Eu is used as the second primary color light emitting particle (green light emitting phosphor particle) and the thickness is t ₂ = 9.72 mg / cm ² (six layers). When using the same light emitting particle as the second primary color light emitting particle, the thickness t ₂ = 4.86 mg / cm ² (3 layers), 2.34 mg / cm ² (3 layers) FIG. 2B is a graph showing a light spectrum, and FIG. 2B is a graph obtained by enlarging a part of the two spectra shown in FIG. (A) of FIG. 3 shows the light when CaAlSiN ₃ : Eu is used as the third primary color light emitting particle (red light emitting phosphor particle) and the thickness is t ₃ = 4.80 mg / cm ² (four layers). The spectrum and the light emission when the same luminescent particles are used as the third primary color luminescent particles and the thickness t ₃ = 2.32 mg / cm ² (4 layers) and 0.58 mg / cm ² (1 layer) are used. Fig. 3B is a graph showing a spectrum, and Fig. 3B is a graph obtained by enlarging a part of the two spectra shown in Fig. 3A. FIG. 4A shows the spectrum of light when CaS: Eu is used as the third primary color light emitting particle (red light emitting phosphor particle) and the thickness is t ₃ = 2.59 mg / cm ² (7 layers). , And using the same luminescent particles as the third primary color luminescent particles, and having a thickness t ₃ = 1.48 mg / cm ² (4 layers) and 0.25 mg / cm ² (1 layer), the light spectrum. FIG. 4B is a graph obtained by enlarging a part of the two spectra shown in FIG. FIG. 5 is a schematic partial cross-sectional view of the color liquid crystal display device assembly of Example 1. FIG. 6 is a schematic partial cross-sectional view of a modification of the color liquid crystal display device assembly according to the first embodiment. FIG. 7 is a schematic partial cross-sectional view of the color liquid crystal display device assembly of Example 2. FIG. 8 is a schematic partial cross-sectional view of the color liquid crystal display device assembly of Example 3. FIG. 9 is a schematic partial cross-sectional view of the color liquid crystal display device assembly of Example 4. FIG. 10 is a schematic partial cross-sectional view of the color liquid crystal display device assembly of Example 5. FIG. 11 is a schematic partial cross-sectional view of the color liquid crystal display device assembly of Example 6. FIG. 12 is a schematic partial cross-sectional view of the color liquid crystal display device assembly of Example 7. FIG. 13 is a schematic partial cross-sectional view of the color liquid crystal display device assembly of Example 8. FIG. 14 is a conceptual diagram of a color liquid crystal display device assembly including a color liquid crystal display device and a planar light source device suitable for use in the embodiment. FIG. 15 is a conceptual diagram of a portion of a drive circuit suitable for use in the embodiment. FIG. 16A is a diagram schematically illustrating the arrangement and arrangement of the planar light source units and the like in the planar light source device of the example, and FIG. 16B is a color liquid crystal display device of the example. FIG. 2 is a schematic partial cross-sectional view of a color liquid crystal display device assembly including a planar light source device. FIG. 17 is a flowchart for explaining a driving method of the surface light source device of the split driving method. (A) and (B) of FIG. 18 show the display luminance when it is assumed that a control signal corresponding to a drive signal having a value equal to the drive signal maximum value x _U-max is supplied to the pixel. as second predetermined value y ₂ is obtained by the planar light source unit, the light source luminance Y ₂ of the planar light source unit is the conceptual view for describing under the control of the planar light source unit drive circuit, a state of increasing or decreasing . 19A shows a value (x′≡x ^2.2 ) obtained by multiplying the value of the drive signal input to the liquid crystal display device drive circuit to drive the subpixel by the power of ^2.2 and the duty ratio (= t _ON / t _Const) is a diagram schematically showing the relationship between, (B) in FIG. 19, schematically the relationship between the value X of a control signal for controlling the light transmittance of the subpixel and the display luminance y FIG. FIG. 20 is a conceptual diagram of a color liquid crystal display device assembly including an edge light type (side light type) planar light source device. 21A and 21B are conceptual diagrams of a conventional color liquid crystal display device assembly.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... 1st substrate, 10A ... 1st surface of 1st substrate, 10B ... 2nd surface of 1st substrate, 11 ... Transparent 1st electrode, 12 ... 1st alignment film, 13 ... 1st polarizing film (1st polarizing plate), 14, 114, 214, 314 ... Light reflecting film, 15, 15 ', 115, 215, 315 ... Smoothing film, 20 ... 2nd substrate, 20A ... 1st surface of 2nd substrate, 20B ... 2nd surface of 2nd substrate, 21 ... Transparent 2nd electrode, 22 ... 2nd alignment film, 23 ... Second polarizing film (second polarizing plate), 130, 330 ... third substrate, 130A, 330A ... first surface of third substrate, 130B, 330B ... second surface of third substrate, 40 , 140, 240, 340 ... liquid crystal material, 51, 151 ... diffusion region, 251, 351 ... first primary color light passage region, 52, 1 2, 252, 352... 2nd primary color light emitting region, 53, 153, 253, 353... 3rd primary color light emitting region, 54, 154, 254, 354. 155, 255, 355 ... 1st condensing member, 56, 156, 256, 356 ... 2nd condensing member, 57, 157, 257, 357 ... 3rd condensing member, 58, 158, 258, 358... Color filter, 60... Planar light source device, 410... Color liquid crystal display device, 411. (Backlight), 421 ... partition wall, 432 ... planar light source unit, 423 ... light emitting diode, 424 ... photodiode (light sensor), 431 ... housing, 432A ... housing the body's Surface, 432B: Side surface of the housing, 433 ... Outer frame, 434 ... Inner frame, 435A, 435B, 435C ... Spacer, 436 ... Guide member, 437 ... Bracket member, 441 ... Light diffusion plate, 442 ... Diffusion sheet, 443 ... Prism sheet, 444 ... Polarization conversion sheet, 445 ... Reflection sheet, 450 ... Surface light source device control circuit, 451. Arithmetic circuit 452... Storage device (memory) 460... Planar light source unit drive circuit 461... Arithmetic circuit 462... Storage device (memory) 463. 464... Photodiode control circuit, 465... Switching element, 466... Light emitting diode driving power source (constant current source), 470. DESCRIPTION OF SYMBOLS 1 ... Timing controller, 500 ... Light source, 510 ... Light guide plate, 511 ... 1st surface (bottom surface) of a light guide plate, 512 ... Uneven part, 513 ... 2nd of a light guide plate Surface (top surface), 514: First side surface of light guide plate, 515: Second side surface of light guide plate, 516: Third side surface of light guide plate, 520: Reflecting member, 531 ... Diffusion sheet, 532 ... Prism sheet

Claims (19)

(A-1) a front panel including a transparent first electrode formed on a first surface of a first substrate having a first surface and a second surface;
(A-2) a rear panel including a transparent second electrode formed on a first surface of a second substrate having a first surface and a second surface; and
(A-3) a liquid crystal material disposed between the first surface of the first substrate and the first surface of the second substrate;
A color liquid crystal display device in which a plurality of pixels each including at least a first subpixel, a second subpixel, and a third subpixel are arranged in a two-dimensional matrix, and
(B) a planar light source device having a light source disposed on the rear panel side and illuminating the color liquid crystal display device from the rear panel side;
A color liquid crystal display device assembly comprising:
The light source emits first primary color light corresponding to the first primary color among the three primary colors of light composed of the first primary color, the second primary color, and the third primary color,
(A) It is composed of second primary color luminescent particles that emit second primary color light corresponding to the second primary color, and is emitted from the light source and excited by the first primary color light that has passed through the second subpixel to emit second primary color light. A second primary color light emitting area,
(B) The first primary color light emitting particles that emit the third primary color light corresponding to the third primary color are emitted from the light source and excited by the first primary color light that has passed through the third sub-pixel to emit the third primary color light. A third primary color light emitting region, and
(C) a diffusion region that diffuses the first primary color light emitted from the light source and passed through the first subpixel;
With
The first primary color is blue, the second primary color is green, the third primary color is red,
₁ the wavelength of the first primary light lambda, ₂ the wavelength of the second primary color light lambda, the wavelength of the three primary colors and lambda _3, the light of the wavelength lambda ₁ in the spectrum of light emitted from the second primary light emitting regions The intensity is I ₂ (λ ₁ ), the light intensity at the wavelength λ ₂ is I ₂ (λ ₂ ), and the light intensity at the wavelength λ ₁ in the spectrum of the light emitted from the third primary color emission region is I ₃ (λ ₁ ) When the light intensity at the wavelength λ ₃ is I ₃ (λ ₃ ),
I ₂ (λ ₁ ) / I ₂ (λ ₂ ) ≦ 0.1 (1-1)
I ₃ (λ ₁ ) / I ₃ (λ ₃ ) ≦ 0.1 (1-2)
A color liquid crystal display device assembly characterized by satisfying The thickness of the second primary color light emitting region is determined so as to satisfy Formula (1-1),
2. The color liquid crystal display device assembly according to claim 1, wherein the thickness of the third primary color light emitting region is determined so as to satisfy the formula (1-2). The thickness t ₂ of the second primary light emitting region satisfying the equation (1-1) is, when converted in milligrams / cm ^2, satisfies 8 (mg / cm ²⁾ ≦ t ₂ ≦ 25 (mg / cm ²⁾ And
The thickness t ₃ of the third primary light emitting region satisfying the equation (1-2), when converted in milligrams / cm ^2, satisfies 1 (mg _{^{/ cm 2) ≦ t 3 ≦}} 10 ( mg / cm ²⁾ The color liquid crystal display device assembly according to claim 2. The second primary color light emitting region is disposed between a portion of the first surface of the first substrate corresponding to the second subpixel and a portion of the transparent first electrode,
The third primary color light emitting region is disposed between the portion of the first surface of the first substrate corresponding to the third subpixel and the portion of the transparent first electrode,
2. The color liquid crystal display device according to claim 1, wherein the diffusion region is disposed between a portion of the first surface of the first substrate corresponding to the first subpixel and a portion of the transparent first electrode. Assembly.   A light reflecting film for reflecting the second primary color light and the third primary color light is disposed between the second primary color light emission region, the third primary color light emission region and the diffusion region, and the transparent first electrode. The color liquid crystal display device assembly according to claim 4. (C) a third substrate facing the front panel, having a first surface facing the front panel, and a second surface facing the first surface;
With
The second primary color light emitting region is disposed between a portion of the second surface of the first substrate corresponding to the second subpixel and a portion of the first surface of the third substrate,
The third primary color light emitting region is disposed between the portion of the second surface of the first substrate corresponding to the third subpixel and the portion of the first surface of the third substrate,
The color according to claim 1, wherein the diffusion region is disposed between a portion of the second surface of the first substrate corresponding to the first subpixel and a portion of the first surface of the third substrate. Liquid crystal display assembly.   A light reflecting film that reflects the second primary color light and the third primary color light is disposed between the second primary color light emission region, the third primary color light emission region, the diffusion region, and the second surface of the first substrate. The color liquid crystal display device assembly according to claim 6. (A-1) a front panel including a transparent first electrode formed on a first surface of a first substrate having a first surface and a second surface;
(A-2) a rear panel including a transparent second electrode formed on a first surface of a second substrate having a first surface and a second surface; and
(A-3) a liquid crystal material disposed between the first surface of the first substrate and the first surface of the second substrate;
A color liquid crystal display device in which a plurality of pixels each including at least a first subpixel, a second subpixel, and a third subpixel are arranged in a two-dimensional matrix, and
(B) a planar light source device having a light source disposed on the rear panel side and illuminating the color liquid crystal display device from the rear panel side;
A color liquid crystal display device assembly comprising:
The light source emits first primary color light corresponding to the first primary color among the three primary colors of light composed of the first primary color, the second primary color, and the third primary color,
(A) It is composed of second primary color light-emitting particles that emit second primary color light corresponding to the second primary color, and is excited by the first primary color light emitted from the light source to emit second primary color light. A second primary color light emitting area to be illuminated, and
(B) It comprises third primary color light emitting particles that emit light of the third primary color corresponding to the third primary color, and is excited by the first primary color light emitted from the light source to emit the third primary color light. A third primary color light emitting area to be illuminated;
With
The first primary color is blue, the second primary color is green, the third primary color is red,
₁ the wavelength of the first primary light lambda, ₂ the wavelength of the second primary color light lambda, the wavelength of the three primary colors and lambda _3, the light of the wavelength lambda ₁ in the spectrum of light emitted from the second primary light emitting regions The intensity is I ₂ (λ ₁ ), the light intensity at the wavelength λ ₂ is I ₂ (λ ₂ ), and the light intensity at the wavelength λ ₁ in the spectrum of the light emitted from the third primary color emission region is I ₃ (λ _1), when the light intensity at the wavelength lambda ₃ to the I ₃ (lambda _3),
I ₂ (λ ₁ ) / I ₂ (λ ₂ ) ≦ 0.1 (2-1)
I ₃ (λ ₁ ) / I ₃ (λ ₃ ) ≦ 0.1 (2-2)
A color liquid crystal display device assembly characterized by satisfying The thickness of the second primary color light emitting region is determined so as to satisfy Formula (2-1),
9. The color liquid crystal display device assembly according to claim 8, wherein the thickness of the third primary color light emitting region is determined so as to satisfy the formula (2-2). The thickness t ₂ of the second primary light emitting region satisfying the equation (2-1) is, when converted in milligrams / cm ^2, satisfies 2 (mg / cm ²⁾ ≦ t ₂ ≦ 10 (mg / cm ²⁾ And
The thickness t ₃ of the third primary light emitting region satisfying the equation (2-2) is, when converted in milligrams / cm ^2, 0.5 (mg _{^{/ cm 2) ≦ t 3 ≦}} 5 ( mg / cm ²⁾ The color liquid crystal display device assembly according to claim 9, wherein: The second primary color light emitting region is disposed between the portion of the first surface of the second substrate corresponding to the second subpixel and the portion of the transparent second electrode,
9. The color according to claim 8, wherein the third primary color light emitting region is disposed between a portion of the first surface of the second substrate corresponding to the third subpixel and a portion of the transparent second electrode. Liquid crystal display assembly. (C) a second light condensing member that condenses the second primary color light emitted in the second primary color light emitting region to the second subpixel;
(D) a third condensing member that condenses the third primary color light emitted in the third primary color light emitting region to the third subpixel;
Is further provided,
The second light collecting member is disposed between the second primary color light emitting region and the transparent second electrode,
The color liquid crystal display device assembly according to claim 11, wherein the third light collecting member is disposed between the third primary color light emitting region and the transparent second electrode.   A first condensing member that is disposed between the first surface of the second substrate and the transparent second electrode and condenses the first primary color light emitted from the light source onto the first subpixel; The color liquid crystal display device assembly according to claim 12, wherein the color liquid crystal display device assembly is a liquid crystal display device assembly.   A light reflecting film for reflecting the second primary color light and the third primary color light is disposed between the second primary color light emission region and the third primary color light emission region and the first surface of the second substrate. The color liquid crystal display device assembly according to claim 12. (C) a third substrate disposed between the rear panel and the planar light source device and having a first surface facing the rear panel and a second surface facing the planar light source device;
Is further provided,
The second primary color light emitting region is disposed between a portion of the first surface of the third substrate corresponding to the second subpixel and a portion of the second surface of the second substrate,
9. The third primary color light emitting region is disposed between a portion of the first surface of the third substrate corresponding to the third subpixel and a portion of the second surface of the second substrate. The color liquid crystal display device assembly as described. (C) a second light condensing member that condenses the second primary color light emitted in the second primary color light emitting region to the second subpixel;
(D) a third condensing member that condenses the third primary color light emitted in the third primary color light emitting region to the third subpixel;
Is further provided,
The second light collecting member is disposed between the first surface of the third substrate and the second surface of the second substrate,
The color liquid crystal display device assembly according to claim 15, wherein the third light collecting member is disposed between the first surface of the third substrate and the second surface of the second substrate.   A first condensing member is disposed between the first surface of the third substrate and the second surface of the second substrate, and condenses the first primary color light emitted from the light source onto the first subpixel. The color liquid crystal display device assembly according to claim 16.   A light reflecting film that reflects the second primary color light and the third primary color light is disposed between the second primary color light emission region and the third primary color light emission region and the first surface of the third substrate. The color liquid crystal display device assembly according to claim 16.   The color light source according to any one of claims 1 to 18, wherein the light source comprises a light emitting diode, a fluorescent lamp, or an electroluminescence light emitting device that emits blue light as the first primary color light. Liquid crystal display assembly.

Images