JP2004177592A - Colored layer material, color filter substrate, electrooptical device, and electronic equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a colored layer material that can display the best colore reproducibility when a white LED is used as a light source. <P>SOLUTION: The colored layer material with ≥70% maximum transmissivity at 465 to 620 nm is adjusted so that 380 to 465 nm mean transmissivity becomes larger than 620 to 780 nm mean transmissivity. A color filter substrate for liquid crystal device is formed by using this colored layer material and then a spectral characteristic of a colored layer of the G (green) color can be optimized for an LED light source. Consequently, when this liquid crystal display device displays an image, the colore reproducibility of the G color can be improved. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a color layer material suitable for a color filter substrate used in an electro-optical device such as a liquid crystal device, a color filter substrate using the color layer material, an electro-optical device using the color filter substrate, and an electro-optical device. The present invention relates to an electronic device using the device.
[0002]
[Prior art]
2. Description of the Related Art In recent years, electro-optical devices such as liquid crystal devices and EL devices have been widely used in electronic devices such as mobile phones and personal digital assistants. For example, an electro-optical device is used as a display unit that visually displays various types of information regarding electronic devices. As such an electro-optical device, a liquid crystal device using liquid crystal as the electro-optical material, an EL device using EL (Electro Luminescence) as the electro-optical material, and other various devices are known.
[0003]
For example, when a liquid crystal device is considered as an example of an electro-optical device, the liquid crystal device includes a pair of substrates facing each other and a liquid crystal layer sealed between the substrates. Then, images such as characters, numerals, figures, and the like are displayed according to a technique of modulating light passing through the liquid crystal layer by controlling the orientation of liquid crystal molecules in the liquid crystal layer. In such a liquid crystal device, there is also known a liquid crystal device in which color display is performed by forming a color filter on one of the pair of substrates. In this case, the color filter is formed by, for example, providing three colored layers of R, G, and B in an appropriate arrangement pattern.
[0004]
In such a color display type liquid crystal device, a configuration is known in which a three-wavelength type cold cathode tube is used as a light source and light from this light source is supplied to a color filter (for example, see Patent Document 1).
[0005]
[Patent Document 1]
JP 2001-066619 A (Page 22, FIG. 1)
[0006]
[Problems to be solved by the invention]
By the way, recently, with respect to portable devices such as a mobile phone and a PDA (Personal Digital Assistant), an LED that is smaller and lighter than a cold cathode tube, particularly a YAG white LED (Light Emitting Diode) may be used as a light source. More.
[0007]
The YAG white LED is formed, for example, by applying a YAG (yttrium aluminum garnet) -based phosphor to the surface of a blue LED. This YAG phosphor has a function of converting blue light into yellow light. In this YAG type LED, a part of the blue light emitted by the blue LED passes through the phosphor layer, and the rest strikes the phosphor and becomes yellow light. An observer recognizes light in which two colors of light, blue light and yellow light, are mixed as white light.
[0008]
In the above-described conventional color display type liquid crystal device, the spectral characteristics of a color filter having three colored layers of R, G, and B are adapted to the emission characteristics of a three-wavelength type cold cathode tube. Therefore, when the above-mentioned white LED is used as a light source in place of the three-wavelength cold cathode tube, the compatibility between the emission characteristics of the white LED and the spectral characteristics of the color filter deteriorates, and the color reproducibility in display deteriorates. There was a problem.
[0009]
The present invention has been made in view of this problem, and has a coloring layer material, a color filter substrate, an electro-optical device, and an electronic device that can exhibit the best color reproducibility when a white LED is used as a light source. The purpose is to provide equipment.
[0010]
[Means for Solving the Problems]
(1) In order to achieve the above object, the colored layer material according to the present invention has an average transmittance of 380 nm to 465 nm of 620 nm to 780 nm in a colored layer material having a maximum transmittance of 465 nm to 620 nm of 70% or more. It is characterized by being larger than the transmittance.
[0011]
The three-wavelength cold-cathode tube has, for example, a light emission characteristic indicated by a symbol A in FIG. When this cold-cathode tube is used as a light source, the spectral characteristics of the G color material of the color filter formed by the three color layers of R, G, and B are set, for example, as shown by reference numerals C1 and C2 in FIG. In this case, green color reproducibility in color display was good. In the colored layer having the characteristic represented by C1 or C2, the average transmittance of light in the range of 380 nm to 465 nm was smaller than the average transmittance of light in the range of 620 nm to 780 nm. Ie
Average transmittance from 380 to 465 nm <average transmittance from 620 to 780 nm.
[0012]
By the way, recently, instead of the cold-cathode tube having the characteristic indicated by reference character A in FIG. 6, a YAG white LED having the characteristic indicated by reference character B has been often used as a light source. When this LED is used as a light source, if a colored layer having characteristics as shown by C1 or C2 in FIG. 7 is used, the X value increases on the CIE chromaticity diagram, that is, green becomes yellow-green. Therefore, it was found that the color reproducibility deteriorated.
[0013]
On the other hand, the present inventor sets the spectral characteristics of the coloring layer corresponding to the G (green) color among the three coloring layers of R, G, and B to the characteristics shown by the reference symbol D in FIG. It has been found that even when a YAG type LED is used as a light source, the X value can be reduced on the CIE chromaticity diagram, and the color reproducibility of the G color material can be improved. The characteristic indicated by the symbol D is that the average transmittance of light in the range of 380 nm to 465 nm is larger than the average transmittance of light in the range of 620 nm to 780 nm, that is,
It was also found that the average transmittance from 380 to 465 nm> the average transmittance from 620 to 780 nm.
[0014]
That is, as in the present invention, in a colored layer material having a maximum transmittance of 70% or more in the range of 465 nm to 620 nm, the average transmittance of 380 nm to 465 nm is set to be larger than the average transmittance of 620 nm to 780 nm. Then, in the spectral spectrum of the G (green) color material, the transmitted light in the region of 620 nm to 780 nm can be reduced to cut off the yellow component, and therefore, the x value on the CIE chromaticity diagram (That is, green instead of yellow-green), and the color reproducibility of green can be improved.
[0015]
(2) Next, the color filter substrate according to the present invention is a color filter substrate having a green coloring layer, wherein the coloring layer has a maximum transmittance of 465 nm to 620 nm of 70% or more and an average transmittance of 380 nm to 465 nm. It is characterized in that the transmittance is larger than the average transmittance from 620 nm to 780 nm.
[0016]
According to this color filter substrate, the transmitted light in the region of 620 nm to 780 nm in the spectral spectrum of the G (green) color material can be reduced to cut off the yellow component, and therefore, the CIE chromaticity diagram In the above, the x value can be reduced (that is, green instead of yellow-green), and the color reproducibility of green can be improved. That is, the best color reproducibility can be exhibited when a YAG white LED is used as a light source.
[0017]
(3) The color filter substrate preferably further includes a red coloring layer and a blue coloring layer in addition to the green coloring layer. Thus, full-color display using the three primary colors of R, G, and B can be performed, and particularly, color display excellent in green color reproducibility can be performed.
[0018]
(4) Next, an electro-optical device according to the present invention includes a color filter substrate having a green color layer, and a light source that generates light to be supplied to the color filter substrate. The maximum transmittance at 465 nm to 620 nm is 70% or more, and the average transmittance at 380 nm to 465 nm is larger than the average transmittance at 620 nm to 780 nm.
[0019]
According to this electro-optical device, it is possible to reduce the transmitted light in the region of 620 nm to 780 nm in the spectral spectrum of the G (green) color material to cut off the yellow component, and therefore the CIE chromaticity diagram In the above, the x value can be reduced (that is, green instead of yellow-green), and the color reproducibility of green can be improved.
[0020]
(5) In the electro-optical device, it is preferable that the light source includes a YAG white LED. This light source is smaller and lighter than a light source using a cold cathode tube, and is excellent in portability. According to the present invention, the best color reproducibility for the G color can be exhibited even when a YAG white LED is used as a light source.
[0021]
(6) In the electro-optical device, the color filter substrate preferably further includes a red coloring layer and a blue coloring layer in addition to the green coloring layer. Thus, full-color display using the three primary colors of R, G, and B can be performed, and particularly, color display excellent in green color reproducibility can be performed.
[0022]
(7) The electro-optical device may further include an electrode provided on the color filter substrate, a counter substrate facing the color filter substrate, an electrode provided on the counter substrate, and the color filter substrate facing the color filter substrate. It is desirable to have a liquid crystal layer provided between the substrate and the substrate. According to this configuration, a liquid crystal device is formed. This liquid crystal device can perform color display with excellent green color reproducibility even when the liquid crystal device is formed to be lightweight and compact by using a YAG system LED as a light source.
[0023]
(8) Next, an electronic apparatus according to an aspect of the invention includes the electro-optical device having the above-described configuration and a control unit that controls an operation of the electro-optical device. According to this electronic device, it is possible to perform color display with excellent green color reproducibility. In addition, as such an electronic device, a mobile phone, a portable information terminal, and other various electronic devices can be considered.
[0024]
BEST MODE FOR CARRYING OUT THE INVENTION
(Embodiments of Colored Layer Material, Color Filter Substrate, and Electro-optical Device)
Hereinafter, a case where the present invention is applied to a liquid crystal device which is an example of an electro-optical device will be described as an example. The embodiments described hereinafter are merely examples of the present invention, and do not limit the present invention. In the following description, reference will be made to the drawings as necessary, but in the drawings, in order to clearly show important components of a structure including a plurality of components, relative components different from actual ones will be described. The dimensions are shown.
[0025]
FIG. 1 shows an embodiment in which the electro-optical device according to the present invention is applied to a liquid crystal device as an example. The liquid crystal device described here is of an active matrix type using a TFD (Thin Film Diode) which is a two-terminal switching element, and uses a color filter substrate as a substrate for an electro-optical device. This is a reflection type liquid crystal device. FIG. 1 also shows an embodiment in which the coloring layer material and the color filter substrate according to the present invention are applied to a liquid crystal device.
[0026]
In FIG. 1, a liquid crystal device 1 includes a liquid crystal panel 2, a driving IC 3 mounted on the liquid crystal panel 2, and a lighting device 4. The illumination device 4 is provided on the back side of the liquid crystal panel 2 when viewed from the observation side (that is, the upper side in the figure), and functions as a backlight. The illumination device 4 may be provided on the observation side of the liquid crystal panel 2 to function as a front light.
[0027]
The illuminating device 4 includes a light source 6 configured by a YAG type LED (Light Emitting Diode) that is a point light source, and a light guide 7 formed of a translucent resin. On the back side of the light guide 7 as viewed from the observation side, a reflection layer 8 is provided as necessary. On the observation side of the light guide 7, a diffusion layer 9 is provided as necessary. The light inlet 7a of the light guide 7 extends in the direction perpendicular to the plane of the paper of FIG. 1, and a plurality of light sources 6, for example, about three light sources 6, are arranged at an appropriate distance from each other. Is done. The light emission characteristics of the LEDs constituting the light source 6 are, for example, the characteristics indicated by reference numeral B in FIG. Note that LEDs are smaller and lighter than cold cathode tubes, and are suitable for various portable devices.
[0028]
The liquid crystal panel 2 includes a color filter substrate 11, an element substrate 12 facing the color filter substrate 11, and a square or rectangular annular seal member 13 viewed from the direction of arrow A, which bonds the substrates. The liquid crystal 14 is sealed in a gap surrounded by the substrate 11, the substrate 12, and the sealing material 13, that is, a so-called cell gap, to form a liquid crystal layer.
[0029]
The color filter substrate 11 has a rectangular or square first base material 16a viewed from the direction of arrow A, and a resin scattering layer 17 is formed on the inner surface of the first base material 16a, and a reflective layer is formed thereon. 18, a colored layer 19 and a light-shielding layer 21 are formed thereon, an overcoat layer 22 is formed thereon, and an electrode 23a extending linearly in a direction perpendicular to the paper is formed thereon. An alignment film 24a is formed thereon. The alignment film 24a is subjected to an alignment process, for example, a rubbing process, whereby the alignment of the liquid crystal molecules near the first base material 16a is determined. Further, a retardation plate 26a and a polarizing plate 27a are attached to the outer surface of the first base material 16a by bonding or the like.
[0030]
The first base material 16a is formed of, for example, translucent glass, translucent plastic, or the like. Fine irregularities are formed on the surface of the resin scattering layer 17 as shown in FIG. The reflection layer 18 is formed of, for example, Al (aluminum), an Al alloy, or the like. The surface of the reflective layer 18 has an uneven shape corresponding to the unevenness formed on the resin scattering layer 17 which is the underlying layer. The light reflected by the reflective layer 18 is diffused by the uneven shape.
[0031]
For example, as shown in FIG. 4, each of the coloring layers 19 is formed in a rectangular dot shape, and one coloring layer 19 has three primary colors of R (red), G (green), and B (blue). Either one is presented. The colored layers 19 of these colors are arranged in a stripe arrangement, a delta arrangement, a mosaic arrangement, or any other appropriate arrangement. FIG. 4 illustrates a stripe arrangement. Note that the coloring layer 19 can also be formed with three primary colors of C (cyan), M (magenta), and Y (yellow). FIG. 2 is a sectional view taken along line XX in FIG.
[0032]
Of the R, G, and B color layers 19, the spectral characteristics of the G (green) color layer 19 are set as indicated by reference numeral D in FIG. The characteristic indicated by the symbol D is such that the average transmittance of light in the range of 380 nm to 465 nm is larger than the average transmittance of light in the range of 620 nm to 780 nm, that is,
The average transmittance at 380 to 465 nm is set to be greater than the average transmittance at 620 to 780 nm. Such transmittance adjustment is, for example, appropriately adjusting the blending of pigments and dyes for specifying the color of the colored layer 19, for example, adjusting the mixing ratio of a green pigment and a yellow pigment, Can be achieved by:
[0033]
In FIG. 1, the light-shielding layer 21 is formed of a light-shielding material such as Cr (chrome) so as to fill the gap between the plurality of colored layers 19. The light shielding layer 21 functions as a black matrix and improves the contrast of an image displayed by light transmitted through the coloring layer 19. The light-shielding layer 21 is not limited to being formed of a specific material such as Cr, but may be formed by, for example, stacking, that is, stacking, each of the R, G, and B coloring layers constituting the coloring layer 19. can do.
[0034]
The overcoat layer 22 is formed of, for example, a photosensitive resin such as an acrylic resin or a polyimide resin. In addition, a through-hole 28 reaching the surface of the colored layer 19 is formed in a proper place of the overcoat layer 22 to form a depression, as shown in FIG. The depression 28 is not limited to the through hole, and may be formed by a bottomed hole, that is, a concave portion having a depth halfway in the overcoat layer 22 without reaching the surface of the coloring layer 19.
[0035]
The electrode 23a extending linearly in the direction perpendicular to the paper of FIG. 2 is formed of, for example, a metal oxide such as ITO (Indium Tin Oxide), and a part of the center thereof falls into the depression 28. Further, the alignment film 24a formed thereon is formed of, for example, polyimide or the like, and a portion corresponding to the depression 28 also falls into the depression 28 with respect to the alignment film 24a. That is, when viewed two-dimensionally from the direction of arrow A, a plurality of depressions are formed in the electrode 23a and the alignment film 24a.
[0036]
In FIG. 1, the element substrate 12 facing the color filter substrate 11 has a second base material 16b. One side of the second base material 16b, on which the overhang portion 29 is formed, protrudes outside the first base material 16a. A plurality of TFDs 31 as switching elements are formed on the inner surface of the second base material 16b, a plurality of dot electrodes 23b are formed so as to connect to the TFDs 31, and an alignment film 24b is formed thereon. You. The alignment film 24b is subjected to an alignment process, for example, a rubbing process, whereby the alignment of the liquid crystal molecules near the second base material 16b is determined. A retardation plate 26b and a polarizing plate 27b are attached to the outer surface of the second base material 16b by bonding or the like.
[0037]
The second base material 16b is formed of, for example, translucent glass, translucent plastic, or the like. The dot electrode 23b is formed of a metal oxide such as ITO. The alignment film 24b is formed of, for example, polyimide or the like.
As shown in FIG. 5, each TFD 31 is formed by connecting a first TFD element 32a and a second TFD element 32b in series. The TFD element 31 is formed, for example, as follows. That is, first, the first layer 34a of the line wiring 33 and the first metal 36 of the TFD element 31 are formed by TaW (tantalum tungsten). Next, the second layer 34b of the line wiring 33 and the insulating film 37 of the TFD element 31 are formed by anodizing. Next, the third layer 34c of the line wiring 33 and the second metal 38 of the TFD element 31 are formed by, for example, Cr (chromium).
[0038]
In FIG. 3, the linear electrodes 23a formed on the color filter substrate 11 extend in the left-right direction of the drawing. The line wirings 33 formed on the element substrate 12 extend in a direction perpendicular to the linear electrodes 23a, that is, in a direction perpendicular to the plane of the drawing. FIG. 3 is a sectional view taken along line YY in FIG.
[0039]
In FIG. 5, the second metal 38 of the first TFD element 32a extends from the third layer 34c of the line wiring 33. Further, the dot electrode 23b is formed so as to overlap the tip of the second metal 38 of the second TFD element 32b. Considering that an electric signal flows from the line wiring 33 to the dot electrode 23b, in the first TFD element 32a, the electric signal flows in the order of the second electrode 38, the insulating film 37, and the first metal 36 according to the current direction. In the second TFD element 32b, an electric signal flows in the order of the first metal 36 → the insulating film 37 → the second metal 38.
[0040]
That is, a pair of electrically opposite TFD elements are connected in series between the first TFD element 32a and the second TFD element 32b. Such a structure is generally called a back-to-back structure, and the TFD element having this structure is compared with a case where the TFD element is configured by only one TFD element. It is known that stable characteristics can be obtained. In order to prevent the first metal 36 or the like from peeling off from the second base material 16b or to prevent impurities from diffusing from the second base material 16b to the first metal 36 or the like, the TFD 31 and the base material An underlayer (not shown) may be provided between the base wiring 16b and the line wiring 33 and the base 16b.
[0041]
In FIG. 1, a wiring 39 is formed on the overhanging portion 29 of the second base material 16b at the same time when, for example, the TFD 31 and the dot electrode 23b are formed. In addition, the wiring 41 is formed on the first base material 16a at the same time when the reflective layer 18 and the linear electrode 23a are formed, for example. Inside the sealing material 13, a spherical or cylindrical conductive material 42 is contained in a dispersed state. The wiring 41 on the first base 16a and the wiring 39 on the second base 16b are electrically connected to each other by the conductive material 42, whereby the linear electrode 23a on the color filter substrate 11 side is connected to the element substrate 12 side. Is electrically connected to the wiring 39.
[0042]
The driving IC 3 is mounted on the substrate overhang portion 29 of the element substrate 12 by an ACF (Anisotropic Conductive Film) 43. More specifically, the driving IC 3 is fixed on the overhang portion 29 by the resin constituting the ACF 43, and the bumps or terminals of the driving IC 3 and the wiring 39 are conductively connected by conductive particles included in the ACF 43.
[0043]
An external connection terminal 44 is formed on the edge of the overhang portion 29, and the external connection terminal 44 is conductively connected to the bump of the driving IC 3 by the ACF 43. A wiring board (not shown), for example, a flexible wiring board, is connected to the external connection terminal 44 by a conductive connection method such as soldering, ACF, or heat sealing. Signals, power, and the like are supplied to the liquid crystal device 1 from an electronic device, for example, a mobile phone or a portable information terminal, via the wiring board.
[0044]
In FIG. 1, the linear electrodes 23a on the color filter substrate 11 side and the dot electrodes 23b on the element substrate 12 side overlap each other in a plan view as viewed in the direction of arrow A. The overlapping area forms a display dot D which is the minimum unit of display. As shown in FIG. 4, the display dot D has an area of substantially the same size as the dot electrode 23b. In FIG. 4, the dot electrode 23b indicated by the dashed line is drawn slightly larger than the colored layer 19 indicated by the solid line, but this is for the sake of easy understanding of the structure. They have the same shape and overlap each other.
In FIG. 4, each dot-shaped coloring layer 19 is formed corresponding to each display dot D. 2 and 3, the reflective layer 18 has openings 46 corresponding to the individual display dots D. As shown in FIG. 4, these openings 46 are formed in a rectangular shape in plan view. In FIG. 4, the opening 46 indicated by a broken line is drawn slightly larger than the depression 28 of the overcoat layer 22 indicated by a solid line, but the peripheries of the two substantially match when viewed in plan.
[0045]
When color display is performed using the colored layers 19 of three colors R, G, and B as in the present embodiment, three colors corresponding to the three colored layers 19 corresponding to the three colors of R, G, and B are used. One display dot D forms one pixel. On the other hand, when a monochrome display such as black and white is performed without using a colored layer, one pixel is formed by one display dot D.
[0046]
2 and 3, a portion R where the reflective layer 18 is provided in each display dot D is a reflective portion, and a portion T where the opening 46 is formed is a transmissive portion. External light incident from the observation side, that is, external light L0 (see FIG. 2) incident from the element substrate 12 side is reflected by the reflecting portion R. On the other hand, the light L1 (see FIG. 2) emitted from the light guide 7 of the illumination device 4 of FIG.
[0047]
According to the present embodiment having the above configuration, when external light such as sunlight or indoor light is strong, the external light L0 is reflected by the reflecting portion R and supplied to the liquid crystal layer 14. On the other hand, when the illumination device 4 in FIG. 1 is turned on, the planar light emitted from the light guide 7 is supplied to the liquid crystal layer 14 through the transmission part T in FIG. Thus, a transflective display is performed.
[0048]
A scanning voltage is applied to one of the linear electrodes 23a and the dot electrodes 23b sandwiching the liquid crystal layer 14, and a data voltage is applied to the other. The TFD 31 attached to the display dot D to which the scanning voltage and the data voltage are applied is turned on, and the alignment state of the liquid crystal molecules in the display dot D is maintained so as to modulate the light passing through the display dot D. Depending on whether or not the modulated light passes through the polarizing plate 27b in FIG. 1, a desired image such as a character, a numeral, a graphic, or the like is displayed on the outside of the element substrate 12. A case where display is performed using the external light L0 is a reflective display, and a case where display is performed using the transmitted light L1 is a transmissive display.
[0049]
When a reflective display is performed, the reflected light L0 passes through the liquid crystal layer 14 twice. Further, when the transmissive display is performed, the transmitted light L1 passes through the liquid crystal layer 14 only once. For this reason, if the layer thickness of the liquid crystal layer 14 is uniform over the reflective portion R and the transmissive portion T, between the reflective display using the reflected light L0 and the transmissive display using the transmitted light L1, There is a possibility that a difference occurs in a distance passing through the liquid crystal layer 14, and a problem that display quality differs between the reflective display and the transmissive display may occur.
[0050]
In this regard, in the present embodiment, by providing the depression 28 in the overcoat layer 22, the layer thickness E of the liquid crystal layer 14 in the transmission part T is increased and the layer thickness F in the reflection part R is reduced. In addition, uniform display quality can be obtained between the reflective display and the transmissive display.
[0051]
In the liquid crystal device 1 of the present embodiment, the light source 6 shown in FIG. 1 is configured by using a white LED of the YAG system, so that the light emission characteristics thereof are as shown by the symbol B in FIG. Then, the spectral characteristics of the G colored layer 19 among the colored layers 19 in FIG.
Average transmittance from 380 to 465 nm> Average transmittance from 620 to 780 nm
It has been adjusted to be.
[0052]
By setting the relationship of the spectral characteristics between the light source and the colored layer in this way, in the display performed by the liquid crystal device 1 of the present embodiment, the transmitted light in the region of 620 nm to 780 nm in the spectral spectrum of the G color material is reduced. By reducing and cutting off the yellow component, the X value can be reduced on the CIE chromaticity diagram, that is, green instead of yellow-green, so that the color reproducibility of G color can be reduced. improves.
[0053]
(Modification)
In the above embodiment, the present invention is applied to a liquid crystal device using a TFD, but the present invention can also be applied to an active matrix type liquid crystal device using a two-terminal switching element other than the TFD. The present invention is also applicable to an active matrix type liquid crystal device using a three-terminal switching element such as a TFT (Thin Film Transistor). Further, the present invention can be applied to a simple matrix type liquid crystal device which does not use a switching element. Further, the present invention can be applied to an electro-optical device other than the liquid crystal device, for example, an organic EL device, a plasma display device, and the like.
[0054]
(Embodiment of electronic device)
Next, an embodiment of an electronic device according to the present invention will be described with reference to the drawings. FIG. 8 illustrates a block diagram of an embodiment of an electronic device. The electronic device shown here includes the liquid crystal device 1 and a control unit 60 that controls the liquid crystal device 1. The liquid crystal device 1 has a liquid crystal panel 61 and a drive circuit 62 composed of a semiconductor IC or the like. The control means 60 includes a display information output source 63, a display information processing circuit 64, a power supply circuit 66, and a timing generator 67.
[0055]
The display information output source 63 includes a memory such as a ROM (Read Only Memory) or a RAM (Random Access Memory), a storage unit such as a magnetic recording disk or an optical recording disk, and a tuning circuit for synchronizing and outputting a digital image signal. Having. Based on various clock signals generated by the timing generator 67, the display information is supplied to the display information processing circuit 64 in the form of an image signal in a predetermined format or the like.
[0056]
The display information processing circuit 64 includes various known circuits such as a serial-parallel conversion circuit, an amplification / inversion circuit, a rotation circuit, a gamma correction circuit, and a clamp circuit. Is supplied to the drive circuit 62 together with the clock signal CLK. The driving circuit 62 includes a scanning line driving circuit, a data line driving circuit, and an inspection circuit. The power supply circuit 66 supplies a predetermined voltage to each of the above components.
[0057]
FIG. 9 shows an embodiment in which the present invention is applied to a mobile phone as an example of an electronic device. The mobile phone 70 shown here has a main body 71 and a display body 72 provided to be openable and closable on the main body. A display device 73 configured by an electro-optical device such as a liquid crystal device is disposed inside the display unit 72, and various displays related to telephone communication can be visually recognized on the display unit 72 on the display screen 74. Operation buttons 76 are arranged on the front surface of the main body 71. Further, an antenna 77 is mounted to be able to protrude and retract from one end of the display body 72. A speaker is arranged inside the receiving section 78, and a microphone is built inside the transmitting section 79.
[0058]
FIG. 10 illustrates an embodiment in which the present invention is applied to a portable information device that is an example of an electronic device. The portable information device 90 shown here is an information device provided with a touch panel, and has a liquid crystal device 91 as an electro-optical device mounted thereon. The information device 90 has a display area V formed by the display surface of the liquid crystal device 91, and a first input area W1 located below the display area V. An input sheet 92 is arranged in the first input area W1.
[0059]
The liquid crystal device 91 has a structure in which a rectangular or square liquid crystal panel and a rectangular or square touch panel are also planarly overlapped. The touch panel functions as an input panel. The touch panel is larger than the liquid crystal panel and has a shape protruding from one end of the liquid crystal panel.
[0060]
A touch panel is arranged in the display area V and the first input area W1, and an area corresponding to the display area V also functions as a second input area W2 in which an input operation can be performed similarly to the first input area W1. The touch panel has a second surface located on the liquid crystal panel side and a first surface facing the second surface, and an input sheet 92 is affixed to a position corresponding to the first input area W1 on the first surface. .
[0061]
A frame for identifying the icon 93 and the handwritten character recognition area W3 is printed on the input sheet 92. In the first input area W1, a load is applied to the first surface of the touch panel through an input sheet 92 by an input means such as a finger or a pen to select an icon 93 or input a character in the character recognition area W3. Data entry can be performed.
[0062]
On the other hand, in the second input area W2, in addition to being able to observe the image of the liquid crystal panel, the input mode screen is displayed on the liquid crystal panel, for example, and a load is applied to the first surface of the touch panel with a finger or a pen. An appropriate position in the input mode screen can be specified, and thereby data input and the like can be performed.
[0063]
(Other embodiments)
As described above, the present invention has been described with reference to the preferred embodiments. However, the present invention is not limited to the embodiments, and can be variously modified within the scope of the invention described in the claims.
[0064]
For example, as the electronic device according to the present invention, a liquid crystal television, a digital still camera, a wristwatch, and other various electronic devices can be considered in addition to the above-described mobile phone and portable information device.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing one embodiment of a colored layer material, a color filter substrate, and an electro-optical device according to the present invention.
FIG. 2 is an enlarged sectional view showing a main part of FIG.
FIG. 3 is a sectional view of the structure shown in FIG. 2;
FIG. 4 is a plan view showing a planar structure of a main part of the structure shown in FIG. 1;
FIG. 5 is a perspective view showing an example of a switching element used in the device of FIG.
FIG. 6 is a graph showing an example of light emission characteristics of a light source used in the device of FIG.
FIG. 7 is a graph showing an example of spectral characteristics of a G-colored layer used in the apparatus of FIG.
FIG. 8 is a block diagram illustrating an embodiment of an electronic apparatus according to the invention.
FIG. 9 is a perspective view illustrating another embodiment of the electronic apparatus according to the invention.
FIG. 10 is a perspective view showing still another embodiment of the electronic apparatus according to the invention.
[Explanation of symbols]
1: liquid crystal device (electro-optical device), 2: liquid crystal panel, 3: driving IC, 4: illumination device, 11: color filter substrate, 12: element substrate, 13: sealing material, 14: liquid crystal layer, 16a, 16b : Base material, 17: resin scattering layer, 18: reflection layer, 19: coloring layer, 21: light shielding layer, 22: overcoat layer, 23a, 23b: electrode, 24a, 24b: alignment film, 28: depression, 31: TFD, 46: opening in reflective layer, 70: mobile phone (electronic device), 90: portable information device (electronic device), D: display dot, E: thick portion of liquid crystal layer, F: thin portion of liquid crystal device, L0 : External light, L1: illumination light, R: reflection part, T: transmission part, V: display area

Claims (8)

A colored layer material having a maximum transmittance from 465 nm to 620 nm of 70% or more, wherein the average transmittance from 380 nm to 465 nm is larger than the average transmittance from 620 nm to 780 nm. In a color filter substrate having a green coloring layer,
The color filter substrate, wherein the colored layer has a maximum transmittance of 465 nm to 620 nm of 70% or more and an average transmittance of 380 nm to 465 nm larger than an average transmittance of 620 nm to 780 nm. The color filter substrate according to claim 2,
A color filter substrate further comprising a red coloring layer and a blue coloring layer. A color filter substrate having a green color layer; and a light source for generating light to be supplied to the color filter substrate. The green color layer has a maximum transmittance of 465 nm to 620 nm of 70% or more, and 380 nm. An electro-optical device, wherein the average transmittance at 465 nm is larger than the average transmittance at 620 nm to 780 nm. The electro-optical device according to claim 4,
The electro-optical device according to claim 1, wherein the light source includes a white LED of a YAG system. In the electro-optical device according to claim 4 or 5,
The electro-optical device according to claim 1, wherein the color filter substrate further includes a red coloring layer and a blue coloring layer. An electro-optical device according to at least one of claims 4 to 6,
An electrode provided on the color filter substrate, a counter substrate facing the color filter substrate, an electrode provided on the counter substrate, and a liquid crystal layer provided between the color filter substrate and the counter substrate. An electro-optical device, comprising: 8. An electronic apparatus comprising: the electro-optical device according to claim 4; and control means for controlling an operation of the electro-optical device.

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