JP2003167244A - Color filter substrate, manufacturing method thereof, liquid crystal device, and electronic apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a transflective liquid crystal device in which color purity of display in a transmission mode is improved without degrading brightness and the color purity of display in a reflection mode. <P>SOLUTION: The transflective liquid crystal device 1 comprises a liquid crystal panel 40 composed of a color filter substrate 10 holding a liquid crystal layer 30 and disposed oppositely and a counter substrate 20, and a backlight (lighting means) disposed opposite to the viewing side of the liquid crystal panel 40. The color filter substrate 10 is formed of transflective layers 12 each having light transmission portions and light reflection portions, first color filters 13 formed so as to correspond to the light transmission portions of the transflective layers 12, and second color filters 14 having spectral characteristics different from those of the first color filters 13 and being formed so as to correspond to the light reflection portions of the transflective layers 12. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a color filter substrate, a method for manufacturing a color filter substrate, a liquid crystal device, and an electronic device, and more particularly to reducing the brightness and color purity of display when displaying in a reflection mode. Without, it is possible to improve the color purity of the display when displaying in the transmission mode,
The present invention relates to a transflective liquid crystal device having excellent display quality.

[0002]

2. Description of the Related Art As liquid crystal devices, there are known a transmissive liquid crystal device which performs display by utilizing light emitted from a built-in backlight and a reflective liquid crystal device which performs display by utilizing external light such as sunlight. Has been. The former liquid crystal device has an advantage that the display can be visually recognized even in a dark place where the brightness of external light is insufficient, but since the backlight is always turned on,
There is a problem that power consumption increases. On the other hand, the latter liquid crystal device does not have a built-in illumination means,
Although power saving can be achieved, there is a problem in that it is difficult to visually recognize the display in a dark place.

Therefore, as a liquid crystal device having both advantages, in a dark place, a built-in backlight is turned on, and light emitted from the backlight is used to perform display in a transmissive mode so that external light is bright. In a bright place, a transflective liquid crystal device capable of displaying in a reflection mode by utilizing external light is known. In the transflective liquid crystal device, the display can be visually recognized even in a dark place, and the display can be performed by using external light in a bright place. Therefore, it is necessary to always turn on the backlight. It is possible to achieve power saving compared to.

The semi-transmissive reflective liquid crystal device includes a semi-transmissive reflective layer on the liquid crystal layer side surface of a substrate located on the opposite side of the viewing side from a pair of substrates that are opposed to each other with a liquid crystal layer interposed therebetween. It is roughly configured. The semi-transmissive reflective layer is formed of, for example, a reflective layer having openings such as slits for each dot. In the semi-transmissive reflective layer having such a configuration, the openings are light transmissive parts and the other parts are light reflective parts. Function as. In addition, a transflective liquid crystal device having a color filter on one substrate and capable of color display is also known. Less than,
A substrate provided with a color filter is called a "color filter substrate".

[0005]

In the conventional transflective liquid crystal device, the light emitted by the backlight is sequentially transmitted through the substrate on the backlight side, the liquid crystal layer, and the substrate on the observer side. Display in the transmissive mode can be performed by utilizing the fact that the light is emitted to. In addition, by utilizing the fact that external light is sequentially transmitted through the viewer-side substrate and the liquid crystal layer, is reflected by the semi-transmissive reflective layer provided on the backlight-side substrate, and is emitted to the viewer side. The display in the reflection mode can be performed.

Therefore, in a transflective liquid crystal device capable of color display, when displaying in a transmissive mode, the light incident on the liquid crystal panel passes through the color filter only once and is emitted to the observer side. On the other hand, when displaying in the reflective mode, the light incident on the liquid crystal panel is colored twice before the light is reflected by the semi-transmissive reflective layer and after it is reflected by the semi-transmissive reflective layer. The light passes through the filter and is emitted to the observer side.

As the color filter, a filter having a pigment dispersion type colored portion colored red (R), green (G), and blue (B) is widely used. Here, FIG.
In addition, the spectral characteristics of each colored portion of the pigment-dispersed color filter (visible light incident on the liquid crystal panel (wavelength 400 to 700 n
m) and the relationship between the wavelength and the transmittance). Figure 2
In 0 (a), R, G, and B are red colored portions,
It shows an example of spectral characteristics of a green colored portion and a blue colored portion. Note that FIG. 20A shows the spectral characteristic when light passes through the color filter once, and thus corresponds to the spectral characteristic of the color filter when displaying in the transmission mode.

As can be seen from FIG. 20 (a), the red, green and blue colored portions constituting the color filter are red light (wavelength 650 nm and light in the vicinity thereof) and green light (wavelength 5 respectively).
50nm and near light), blue light (wavelength 450nm)
And light in the vicinity thereof) are mainly transmitted, but it can be seen that visible light of all wavelengths is transmitted. That is, the light after passing through the colored portions of the color filter has a smaller amount of light as compared with the light of the color to be displayed, but the light other than the color to be displayed is also included, so that the color purity is low.

On the other hand, the spectral characteristic when light passes through the color filter twice, that is, the spectral characteristic of the color filter when displaying in the reflection mode is the product of the spectral characteristics when the light passes through the color filter once. Therefore, for example, FIG.
It becomes what is shown in (b). As can be seen from FIGS. 20A and 20B, in the conventional transflective liquid crystal device, the spectral characteristics of the color filter when displaying in the transmission mode and the spectral characteristics of the color filter when displaying in the reflection mode are shown. There is a problem that the color purity of the display is low (the color reproduction range is narrow) when the display is performed in the transmission mode as compared with the case where the display is performed in the reflection mode.

The present invention has been made in view of the above circumstances, and is mounted on a semi-transmissive reflective liquid crystal device, so that the brightness and color purity of the display when the display is performed in the reflective mode are not reduced. An object of the present invention is to provide a color filter substrate for a semi-transmissive reflective liquid crystal device capable of improving the color purity of display when performing display in a transmissive mode, and a manufacturing method thereof. Further, the present invention is a semi-transmissive reflective liquid crystal capable of improving the color purity of the display when the display is performed in the transmissive mode without lowering the color purity or the brightness of the display when the display is performed in the reflective mode. An object is to provide a device and an electronic device including the liquid crystal device.

[0011]

As a result of studies to solve the above problems, the present inventor has found that the following color filter substrate, method for manufacturing the color filter substrate, liquid crystal device (semi-transmissive reflective liquid crystal device), electronic device Invented the device. A first color filter substrate of the present invention comprises, on a substrate body, a semi-transmissive reflective layer having a light transmissive portion and a light reflective portion, and a color filter composed of a plurality of colored portions having different colors, In a color filter substrate constituting a liquid crystal panel, a first color filter formed corresponding to the light transmitting portion of the semi-transmissive reflective layer, and a first color filter formed corresponding to the light reflective portion of the semi-transmissive reflective layer. And a second color filter, and the first color filter and the second color filter have different spectral characteristics.

A second color filter substrate of the present invention comprises a color filter comprising a plurality of colored portions of different colors on a substrate body, and a semi-transmissive reflective layer having a light transmissive portion and a light reflective portion. A color filter substrate that constitutes a liquid crystal panel by sandwiching a liquid crystal layer between the first color filter and the counter substrate, and a first color filter formed corresponding to the light transmitting portion of the semi-transmissive reflective layer; A second color filter formed corresponding to the light reflection portion of the semi-transmissive reflection layer, wherein the first color filter and the second color filter have different spectral characteristics. And

That is, in the color filter substrate provided in the conventional transflective liquid crystal device, the color filters having the same spectral characteristics are formed for the transmission mode display and the reflection mode display. On the other hand, in the color filter substrate of the present invention, the first and second color filters having different spectral characteristics are formed for the transmission mode display and the reflection mode display. Therefore, in the transflective liquid crystal device provided with the color filter substrate of the present invention, the color purity of the display when performing display in the transmission mode and the color purity of the display when performing display in the reflection mode are independent of each other. Can be adjusted.

Therefore, by mounting the liquid crystal device in a semi-transmissive reflection type liquid crystal device, the color purity of the display when the display is performed in the transmissive mode can be performed without lowering the brightness and the color purity of the display when the display is performed in the reflective mode. A color filter substrate for a transflective liquid crystal device that can be improved can be provided. In the color filter substrate of the present invention, the first color filter and the second color filter may be formed in the same layer, or may be formed in different layers.

Further, when displaying in the transmissive mode, the light incident on the liquid crystal panel is transmitted through the first color filter once and emitted to the observer side, and when displaying in the reflective mode. The light that has entered the liquid crystal panel passes through a second color filter having a spectral characteristic different from that of the first color filter twice and is emitted to the viewer side. Therefore, in the color filter substrate of the present invention, the spectral characteristics of the first color filter and the second color filter are set so that the color purity of the first color filter is higher than that of the second color filter. By adjusting each, when mounted on a semi-transmissive reflective liquid crystal device, the color purity of the display when the display is performed in the transmissive mode can be performed without lowering the brightness or the color purity of the display when the display is performed in the reflective mode. Can be improved. Further, in the color filter substrate of the present invention, the spectral characteristics of the first and second color filters can be adjusted by the composition of the colored portion or the composition and thickness of the colored portion.

Further, in the color filter substrate of the present invention, both the light transmitting portion and the light reflecting portion are formed in the semi-transmissive reflective layer for each dot constituting the display area of the liquid crystal panel. In addition, it is preferable that the colored portion of the first color filter and the colored portion of the second color filter formed in the same dot have the same color. By mounting the color filter substrate having such a configuration on the transflective liquid crystal device, it is possible to switch between the display in the transmissive mode and the display in the reflective mode for each dot.

Further, the color filter substrate of the present invention preferably comprises a light-shielding layer formed on the peripheral portion of each dot constituting the display area of the liquid crystal panel.
By mounting the color filter substrate having such a configuration on the transflective liquid crystal device, it is possible to shield the peripheral portion of each dot that does not contribute to the display and to improve the contrast.

Further, it is preferable to form a partition for partitioning the colored portion of the first color filter and the colored portion of the second color filter in each dot constituting the display area of the liquid crystal panel. . In such a configuration, both the first color filter and the second color filter can be formed by the inkjet method, and thus both the first color filter and the second color filter can be formed by the photolithography method. Compared with the case of forming, the manufacturing process can be simplified and the manufacturing cost can be significantly reduced. The method for manufacturing the color filter substrate of the present invention will be described later.

Next, a method of manufacturing the color filter substrate of the present invention will be described. According to the first method of manufacturing a color filter substrate of the present invention, both the light transmitting portion and the light reflecting portion are formed in the semi-transmissive reflective layer for each dot constituting the display area of the liquid crystal panel, and the same dot is formed. Formed within,
A method of manufacturing a color filter substrate, wherein the colored portion of the first color filter and the colored portion of the second color filter have the same color, wherein the second color filter is formed on the substrate body by photolithography. And a step of forming a second color filter on the substrate body, after ejecting a droplet of a coloring material by an inkjet method to a region corresponding to the light transmitting portion of the semi-transmissive reflective layer, By firing the discharged coloring material,
And a step of forming the first color filter.

When a light-shielding layer is formed on the periphery of each dot forming the display area of the liquid crystal panel, the display area of the liquid crystal panel is formed on the substrate body by photolithography. A step of forming a light shielding layer may be added to the peripheral edge of each dot. Also,
In the case of including a light-shielding layer formed on the peripheral portion of each dot forming the display area of the liquid crystal panel, the second color filter is formed instead of the step of forming the light-shielding layer by photolithography. After the droplets of the light-shielding material are ejected at a predetermined position on the substrate body by an inkjet method, the ejected light-shielding material is fired to shield the periphery of each dot forming the display area of the liquid crystal panel. A step of forming a layer may be added.

In the second method for manufacturing a color filter substrate of the present invention, each dot constituting the display area of the liquid crystal panel is
In the semi-transmissive reflective layer, both a light transmissive portion and a light reflective portion are formed, and a colored portion of the first color filter and a colored portion of the second color filter which are formed in the same dot are formed. A color filter substrate having the same color and comprising a light-shielding layer formed on the peripheral portion of each dot constituting the display area of the liquid crystal panel, wherein the light-shielding layer is formed on the substrate body. A step of forming a layer; a step of forming the first color filter on the substrate body by a photolithography method; and a step of forming the light shielding layer and the first color filter on the substrate body. The second color filter is formed by discharging a droplet of a coloring material by an inkjet method onto a region of the semi-transmissive reflective layer corresponding to the light reflecting portion, and then firing the discharged coloring material. Characterized by a step.

The third method of manufacturing a color filter substrate of the present invention is characterized in that each dot constituting the display area of the liquid crystal panel is
In the semi-transmissive reflective layer, both a light transmissive portion and a light reflective portion are formed, and a colored portion of the first color filter and a colored portion of the second color filter which are formed in the same dot are formed. Have the same color and have a light-shielding layer formed on the periphery of each dot forming the display area of the liquid crystal panel, and in each dot forming the display area of the liquid crystal panel, the colored portion of the first color filter A method of manufacturing a color filter substrate according to the present invention, wherein a partition for partitioning a colored portion of the second color filter is formed, the step of forming the light shielding layer on the substrate body; In the substrate body on which the step of forming the partition wall and the light shielding layer and the partition wall are formed, a droplet of a coloring material is formed by an inkjet method in a region corresponding to the light transmitting portion of the semi-transmissive reflective layer. Discharge After that, in the step of forming the first color filter by firing the discharged coloring material, and in the substrate main body on which the light shielding layer and the partition wall are formed, the light reflection portion of the semi-transmissive reflection layer is formed. A step of forming the second color filter by discharging droplets of a coloring material by an inkjet method to the corresponding region and then firing the discharged coloring material.

According to the first to third color filter substrate manufacturing methods of the present invention described above, at least one of the first color filter and the second color filter is formed by the ink jet method. Therefore, compared to the case where both the first color filter and the second color filter are formed by the photolithography method, the manufacturing process can be simplified and the manufacturing cost can be reduced.

When the color filter is formed by the photolithography method, a color material having a predetermined pattern is formed by applying a photosensitive coloring material to the entire surface of the substrate body, and then exposing and developing the material. Form a filter. On the other hand, in the case of forming a color filter by an inkjet method, a color filter having a colored portion having a predetermined pattern is formed by discharging a droplet of a coloring material only in a region where a colored portion is formed and then baking the droplet. Can be formed.

Therefore, by forming the color filter by the ink jet method, the number of steps can be reduced as compared with the case of forming the color filter by the photolithography method. In addition to reducing the number of steps, it is not necessary to apply the coloring material to the entire surface of the substrate body, so that the coloring material to be used can be significantly reduced and the manufacturing cost can be reduced. it can.

Next, the liquid crystal device of the present invention will be described. A liquid crystal device (semi-transmissive reflection type liquid crystal device) of the present invention includes a liquid crystal panel composed of a color filter substrate and a counter substrate which are arranged to face each other with a liquid crystal layer sandwiched between the liquid crystal panel and a liquid crystal panel. And a lighting means, wherein one of the color filter substrate and the counter substrate,
A semi-transmissive reflective layer having a light transmissive portion and a light reflective portion is provided, and the color filter substrate is provided with a color filter composed of a plurality of colored portions having different colors, and a color filter is provided between a transmissive mode and a reflective mode. In a liquid crystal device that performs display by switching, the color filter substrate includes a first color filter formed corresponding to the light transmitting portion of the semi-transmissive reflective layer and the light reflective portion of the semi-transmissive reflective layer. The second color filter is formed correspondingly, and the first color filter and the second color filter have different spectral characteristics.

Similar to the color filter substrate of the present invention, the liquid crystal device (semi-transmissive reflection type liquid crystal device) of the present invention has the first and the first spectral characteristics which are different for transmission mode display and reflection mode display. Since the second color filter is formed, the color purity of the display when the display is performed in the transmissive mode can be improved without lowering the brightness and the color purity of the display when the display is performed in the reflective mode. The display quality will be excellent.

In the liquid crystal device (semi-transmissive reflection type liquid crystal device) of the present invention, the first color filter may have a color purity higher than that of the second color filter. By adjusting the spectral characteristic of the second color filter, the color purity of the display when the display is performed in the transmissive mode is improved without lowering the brightness and the color purity of the display when the display is performed in the reflective mode. be able to. Further, in the liquid crystal device (semi-transmissive reflection type liquid crystal device) of the present invention, the spectral characteristics of the first and second color filters are:
Depending on the composition of the colored part, or the composition and thickness of the colored part,
It is possible to adjust.

In the liquid crystal device (semi-transmissive reflective liquid crystal device) of the present invention, the light transmissive portion and the light reflective portion are formed in the semi-transmissive reflective layer for each dot constituting the display area of the liquid crystal panel. Both of the parts are formed, and the colored part of the first color filter and the colored part of the second color filter formed in the same dot have the same color. It is preferable. With this configuration, it is possible to switch between the display in the transmissive mode and the display in the reflective mode for each dot.

Further, in the liquid crystal device (semi-transmissive reflection type liquid crystal device) of the present invention, the color filter substrate includes a light shielding layer formed on a peripheral portion of each dot constituting a display area of the liquid crystal panel. It is preferable. With such a configuration, the peripheral portion of each dot that does not contribute to the display can be shielded from light, and the contrast can be improved.

Further, in each dot constituting the display area of the liquid crystal panel, the color filter substrate is
It is preferable that a partition for partitioning the colored portion of the first color filter and the colored portion of the second color filter is formed. With such a configuration, both the first color filter and the second color filter are
Since it can be formed by the inkjet method,
Compared to the case where both the first color filter and the second color filter are formed by the photolithography method, the manufacturing process can be simplified and the manufacturing cost can be significantly reduced.

Further, in the liquid crystal device (semi-transmissive reflection type liquid crystal device) of the present invention, the semi-transmissive reflective layer is a reflective layer having an opening, and the opening functions as the light transmission part. The thing which the said reflection layer except the area | region in which the said opening part was formed functions as the said light reflection part can be illustrated. Further, in the liquid crystal device (semi-transmissive reflective liquid crystal device) of the present invention, the semi-transmissive reflective layer comprises a reflective layer having a slit portion on one side or both sides,
The thing which the said slit part functions as the said light transmission part, and the said reflection layer except the part in which the said slit part was formed functions as the said light reflection part can be illustrated.

Further, by providing the liquid crystal device (semi-transmissive reflection type liquid crystal device) of the present invention described above, the display in the transmissive mode can be performed without lowering the display brightness and color purity when the display is performed in the reflective mode. It is possible to improve the color purity of display when performing, and it is possible to provide an electronic device having excellent display quality.

[0034]

BEST MODE FOR CARRYING OUT THE INVENTION Next, embodiments of the present invention will be described in detail. In addition, in each embodiment, description will be given with reference to the drawings, but in each drawing, in order to make each layer and each member recognizable in the drawing, different scales are used for each layer and each member. is there.

[First Embodiment] (Structure of Transflective Liquid Crystal Device) A structure of a transflective liquid crystal device according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 3. In the present embodiment, an application example of the present invention to a passive matrix type liquid crystal device will be shown. Also,
The transflective liquid crystal device of the present embodiment includes the color filter substrate of the present invention, and in particular, the color filter substrate has a characteristic structure. FIG. 1 is a schematic perspective view showing the overall configuration of the transflective liquid crystal device of this embodiment. FIG. 2 is a schematic plan view of a color filter and a light-shielding layer provided in the transflective liquid crystal device of this embodiment when viewed from the liquid crystal layer side. FIG. 3 is a partial schematic cross-sectional view of the semi-transmissive reflective liquid crystal device of the present embodiment, which is a cross-sectional view of the semi-transmissive reflective liquid crystal device shown in FIG. 1 taken along the line AA ′. In addition, in FIG. 1 and FIG. 3, the upper side is illustrated as an observer side (viewing side).

As shown in FIGS. 1 and 3, the transflective liquid crystal device 1 of the present embodiment has a liquid crystal layer 30 (not shown in FIG. 1).
A liquid crystal panel 40 including a color filter substrate (lower substrate) 10 and a counter substrate (upper substrate) 20 that are opposed to each other with the liquid crystal panel 40 sandwiched therebetween, and a backlight disposed on the side opposite to the viewing side of the liquid crystal panel 40. (Illumination means) 50.

Here, the color filter substrate 10 includes a semi-transmissive reflective layer 12 and a first color filter 13 of a pigment dispersion type or the like on the surface of the substrate body 11 made of glass or transparent resin on the liquid crystal layer 30 side. A second color filter 14 of a pigment dispersion type or the like and a transparent electrode 17 are provided and are generally configured. Further, the counter substrate 20 is roughly configured by including a transparent electrode 22 on the surface of the substrate body 21 made of glass, transparent resin or the like on the liquid crystal layer 30 side. Note that, in FIG. 1, only the transparent electrodes of the layers formed on the color filter substrate 10 and the counter substrate 20 are taken out and shown. Also,
The backlight 50 includes a light source 51 including a cold cathode tube and the like, and a light guide plate having a structure that guides the light emitted from the light source 51 upward in the drawing in order to efficiently irradiate the liquid crystal panel 40 with the light from the light source 51. It is composed of 52.

On the color filter substrate 10 and the counter substrate 20, a plurality of transparent electrodes 17 and 22 made of indium tin oxide (ITO) or the like are arranged in stripes, respectively. Transparent electrode 17
And the transparent electrode 22 of the counter substrate 20 extend in directions intersecting with each other. A rectangular portion where the transparent electrode 17 of the color filter substrate 10 and the transparent electrode 22 of the counter substrate 20 intersect with each other is a dot 32, and a region in which a large number of dots 32 are arranged in a matrix. Is the display area.

More specifically, in the color filter substrate 10, the liquid crystal layer 30 side of the substrate body 11 is made of a light-reflecting material such as aluminum, silver, or a silver alloy, and each dot 3
2 is a slit-shaped opening 12a formed substantially in the center
And the semi-transmissive reflective layer 12 including the openings 12b formed at the peripheral edge of each dot 32. In the semi-transmissive reflective layer 12, the opening 12a functions as a light-transmitting portion that transmits light, and the area excluding the portions where the openings 12a and 12b are formed functions as a light-reflecting portion that reflects light.

On the liquid crystal layer 30 side of the semi-transmissive reflective layer 12, a first color filter 13 is formed corresponding to the light transmission part (opening 12a) of the semi-transmissive reflective layer 12, and The light-reflecting portion of the transflective layer 12 (openings 12a, 12
A second color filter 14 having a spectral characteristic different from that of the first color filter 13 is formed in a region other than the portion where b is formed).

Here, the first color filter 13 is composed of a red (R) colored portion 13R, a green (G) colored portion 13G, and a blue (B) colored portion 13B. , Are formed in a predetermined pattern corresponding to each dot 32. The second color filter 14 is similar to the first color filter 13 in the red (R) colored portion 14R,
It is composed of a green (G) colored portion 14G and a blue (B) colored portion 14B, and each colored portion is formed in a predetermined pattern corresponding to each dot 32. Further, the opening 12b of the semi-transmissive reflective layer 12 is made of a black resin containing black particles such as carbon particles, a light-shielding material such as a metal such as chromium or a metal compound, and is thicker than the semi-transmissive reflective layer 12. A light shielding layer (black matrix) 15 is formed.

The planar structure of the first color filter 13, the second color filter 14, and the light shielding layer 15 when viewed from the liquid crystal layer 30 side is shown in FIG. That is, any one of the colored portions 13R to 13B of the first color filter 13 is formed in the substantially central portion of each dot 32, and each of the colored portions 13R to 13B of the first color filter 13 is formed in each dot 32. One of the colored portions 14R to 14B of the second color filter 14 is formed around the periphery. Further, since the light shielding layer 15 is formed on the peripheral portion of each dot 32, the light shielding layer 1 is generally viewed.
Reference numeral 5 is formed in a lattice shape in a plan view.

As described above, each dot 32 has two kinds of colored portions (one of the colored portions 13R to 13B and the colored portions 14R to 14B) forming the first and second color filters 13 and 14. However, each dot 32 is provided with a colored portion of the same color. Then, the red colored portions 13R and 14R and the green colored portion 1
The dots 32 on which the colored portions 13B and 14B of 3G, 14G and blue are formed can respectively display red, green and blue, and three dots 3 capable of displaying red, green and blue, respectively.
It is configured such that one pixel can be displayed for every two pixels. The array pattern of the dots 32 displaying each color is not limited to that shown in the figure.

Further, in FIG. 3, the surface of the substrate main body 11 on which the first color filter 13, the second color filter 14 and the light shielding layer 15 are formed is shown to be flat, but actually Has unevenness.
Therefore, on the liquid crystal layer 30 side of the first color filter 13, the second color filter 14, and the light shielding layer 15, the surface of the substrate body 11 on which these are formed is flattened, and
In order to protect the color filter 13 and the second color filter 14, the overcoat layer 16 made of an organic film or the like.
Are formed.

Further, the liquid crystal layer 30 of the overcoat layer 16
A transparent electrode 17 is formed on the side of the substrate main body 11
An alignment film 18 for regulating the alignment of liquid crystal molecules in the liquid crystal layer 30 is formed on the outermost surface of the liquid crystal layer 30 side. As the alignment film 18, for example, a film made of an alignment polymer such as polyimide and having a surface subjected to a rubbing treatment can be exemplified. Further, in practice, a retardation plate and a polarizer are sequentially attached to the side of the substrate body 11 opposite to the liquid crystal layer 30, but the illustration is omitted.

On the other hand, in the counter substrate 20, the substrate body 2
On the liquid crystal layer 30 side of No. 1, a transparent electrode 22 and an alignment film 23 are sequentially formed. Further, in practice, the retardation plate and the polarizer are sequentially attached to the opposite side of the substrate body 21 from the liquid crystal layer 30 side, but the illustration is omitted. The alignment film 2
Since the structure of No. 3 is similar to that of the alignment film 18 of the color filter substrate 10, the description thereof is omitted. In addition, between the color filter substrate 10 and the counter substrate 20 (in the liquid crystal layer 30),
In order to make the cell gap of the liquid crystal panel 40 uniform, a large number of spherical spacers 31 made of silicon dioxide, resin or the like are arranged.

The semi-transmissive reflective liquid crystal device 1 of the present embodiment is roughly configured as described above, and displays in a transmissive mode in a dark place where the external light such as sunlight is insufficient, and the bright external light is displayed. In some places, display in reflection mode can be performed, and display in transmission mode and display in reflection mode can be switched according to the brightness of external light.

More specifically, when the display is performed in the transmissive mode, the backlight 50 is turned on and the light emitted from the backlight 50 is used for the display. That is,
The light that has entered the color filter substrate 10 of the liquid crystal panel 40 passes through the light transmitting portion (opening 12a) of the semi-transmissive reflective layer 12, passes through the first color filter 13, and then the liquid crystal layer 30 and the counter substrate 20. Are sequentially transmitted and emitted to the observer side for display. On the other hand, when the display is performed in the reflection mode, the backlight 50 is not turned on and the display is performed using the external light such as sunlight. That is, the light incident on the liquid crystal panel 40 is sequentially transmitted through the counter substrate 20 and the liquid crystal layer 30, then is incident on the color filter substrate 10, is transmitted through the second color filter 14, and is reflected by the semi-transmissive reflective layer 12. The second color filter 14 is reflected by the portion (the area excluding the portions where the openings 12a and 12b are formed) and is reflected again.
After being transmitted, the liquid crystal layer 30 and the counter substrate 20 are sequentially transmitted and emitted to the observer side for display.

As described above, when the display is performed in the transmission mode, the light incident on the liquid crystal panel 40 is transmitted through the first color filter 13 only once for display.
When displaying in the reflective mode, the light incident on the liquid crystal panel 40 is transmitted through the second color filter 14 twice for display, but in the present embodiment, the light for displaying in the transmissive mode and the reflection mode are used. Since the first and second color filters 13 and 14 having different spectral characteristics are formed for displaying the mode,
It is possible to adjust each spectral characteristic independently. Then, in the present embodiment, the color purity of the first color filter 13 is configured to be higher than the color purity of the second color filter 14.

The first and second color filters 13,
The spectral characteristics (color purity) of 14 can be adjusted by the composition of each colored portion, or the composition and thickness of each colored portion. That is, the spectral characteristics (color purity) of each colored portion can be adjusted by adjusting the concentration, size, shape, type, etc. of the colored particles in the pigment contained in each colored portion. For example, when the types and sizes of the colored particles used are the same and colored portions having the same film thickness are formed, the higher the concentration of the colored particles to be contained, the higher the color purity of the colored portion. Further, the spectral characteristic (color purity) of each colored portion also changes depending on the thickness of each colored portion. Assuming that colored portions having the same composition are formed, the thicker the film thickness, the higher the color purity of the colored portions. In this way, the first and second color filters 13 and 14 having desired spectral characteristics (color purity) are formed by adjusting the composition of each colored portion or the composition and thickness of each colored portion. Is possible.

Hereinafter, the first and second color filters 13,
An example of the spectral characteristic 14 will be described. In the present embodiment, for example, if a conventional color filter having the spectral characteristic shown in FIG. 20A is formed as the second color filter 14, it is incident on the liquid crystal panel 40 when displaying in the reflection mode. The generated light is emitted from the second color filter 14
Is transmitted twice, the spectral characteristics of the color filter when displaying in the reflection mode (the second color filter 14 is
The spectral characteristic when the light is transmitted once is as shown in FIG. 4A, as described based on FIG. Note that FIG.
The spectral characteristics shown in (a) are the same as those shown in FIG.

On the other hand, in the conventional transflective liquid crystal device,
The spectral characteristic of the color filter when displaying in the transmission mode is, for example, that shown in FIG. 20A, and the transmittance of light other than the color to be displayed is large. On the other hand, in the present embodiment, as the first color filter 13, a color filter having better spectral characteristics than the conventional color filter is formed. It is more preferable to form the first color filter 13 so that the spectral characteristic of the color filter when displaying in the transmissive mode is equal to or more than the spectral characteristic when displaying in the reflective mode.

Specifically, as the first color filter 13, for example, a color filter having the spectral characteristic shown in FIG. 4B may be formed. When the display is performed in the transmission mode, the light incident on the liquid crystal panel 40 is transmitted through the first color filter 13 once. Therefore, the spectral characteristic of the color filter shown in FIG. This corresponds to the spectral characteristic of the color filter when performing.

The semi-transmissive reflective liquid crystal device 1 of this embodiment is configured as described above. According to this embodiment, the light-transmitting portion and the light-reflecting portion of the semi-transmissive reflecting layer 12 are respectively made to correspond to each other.
First and second color filters 1 having different spectral characteristics
3 and 14 are formed so that the color purity of the first color filter 13 is higher than that of the second color filter 14, so that the brightness and color purity of the display when displaying in the reflection mode are reduced. It is possible to provide a semi-transmissive reflective liquid crystal device that can improve the display color purity when performing display in the transmissive mode and that is excellent in display quality.

In the transflective liquid crystal device 1 of this embodiment, the transflective layer 12 has a
One slit-shaped opening 1 approximately at the center of each dot 32
2a is formed, the present invention is not limited to this, and the openings 12a formed in each dot 32 are formed.
The shape, the formation location, and the number of the can be appropriately designed. In addition, in the present embodiment, the semi-transmissive reflective layer 12
In the above, the configuration is such that the opening 12b is formed in the peripheral portion of each dot 32 and the light shielding layer 15 is formed in the opening 12b, but the present invention is not limited to this, and in the semi-transmissive reflective layer 12. , The openings 12 at the periphery of each dot 32
The light shielding layer 15 may be formed on the semi-transmissive reflective layer 12 without forming b.

In this embodiment, the semi-transmissive reflective layer 12 is also used.
Although the first and second color filters 13 and 14 are formed immediately above, the present invention is not limited to this, and the first and second color filters are provided on the liquid crystal layer 30 side of the semi-transmissive reflective layer 12. Two
Since it is sufficient that the color filters 13 and 14 are formed, the transflective layer 12 and the first and second color filters 1
Another layer may be interposed between the layers 3 and 14.

(Method of Manufacturing Color Filter Substrate) Next,
Based on FIG. 5, the transflective liquid crystal device 1 of the present embodiment
A method of manufacturing the color filter substrate 10 provided in the above will be described. 5A to 5F are schematic cross-sectional views of the color filter substrate 10 in the process of being manufactured. First, the substrate body 11 is prepared, and as shown in FIG. 5A, the semi-transmissive reflective layer 12 (having a film thickness of 0 in the pattern shown in FIG. 3 is formed on the liquid crystal layer 30 side of the substrate body 11 by photolithography. .2 to 0.3 μm) is formed. That is, a light-reflecting material is formed on the entire surface of the substrate main body 11 by a sputtering method or the like, a photoresist is applied to the entire surface of the substrate main body 11, and then the photoresist is exposed, developed, and formed. By etching and removing the photoresist, the semi-transmissive reflective layer 12 having the openings 12a and 12b of a predetermined pattern is formed.

Next, as shown in FIG. 5B, the light-shielding layer 15 (film) having the pattern shown in FIGS. 2 and 3 is formed by photolithography on the substrate body 11 on which the semi-transmissive reflective layer 12 is formed. The thickness is about 1.0 to 2.0 μm). The light-shielding layer 15 made of a black resin and having a predetermined pattern is
For example, it can be formed as follows. A resist (light-shielding material) containing a black pigment and having photosensitivity is applied to the entire surface of the substrate body 11 on which the semi-transmissive reflective layer 12 is formed, by a spin coating method or the like, and then the resist is baked.
By exposing and developing, the light shielding layer 15 having a predetermined pattern can be formed.

The light-shielding layer 15 having a predetermined pattern made of a metal such as chromium or a metal compound can be formed, for example, as follows. A metal such as chromium or a metal compound (a light-shielding material) is formed on the entire surface of the substrate body 11A on which the semi-transmissive reflective layer 12 is formed by a sputtering method or the like, and a photoresist is applied to the entire surface of the substrate body 11. By exposing and developing the resist, etching the formed metal or metal compound, and removing the photoresist, the light shielding layer 15 having a predetermined pattern can be formed.

Next, as shown in FIG. 5C, the colored portions 14R to 14B having the patterns shown in FIGS. 2 and 3 are sequentially formed by the photolithography method to form the second color filter 14 (film). The thickness is about 0.5 to 2.0 μm). That is, the substrate body 1 on which the light shielding layer 15 is formed
1 is coated with a photosensitive resist containing a red pigment (green pigment, blue pigment) on the entire surface of 1 by a spin coating method or the like, and then the resist is baked, exposed, and developed to give a predetermined pattern of red. Colored portion 14R (green colored portion 1
4G, blue colored portion 14B) can be formed.

Next, the first color filter 13 (coloring portions 13R to 13B) is formed by the inkjet method. That is, as shown in FIG. 5D, the inkjet nozzle 60 is filled with a red ink (coloring material) 33 prepared by dissolving a resin such as a red pigment or an acrylic resin in a solvent, and the inkjet nozzle 60 is discharged. With the nozzle 61 facing the substrate body 11, the inkjet nozzle 60 and the substrate body 11 are moved relative to each other, and the red ink 33 is discharged from the discharge nozzle 61 only to the region where the colored portion 13R of the first color filter 13 is formed. The liquid droplet of is discharged.

At this time, as shown in the drawing, in the dot 32 for displaying red, the semi-transmissive reflective layer 12 and the second color filter 14 are provided around the region where the colored portion 13R of the first color filter 13 is formed. Since the colored portion 14R is formed, the semi-transmissive reflective layer 12 and the colored portion 14R function as partition walls, and the colored portion 13 of the first color filter 13 is formed.
The red ink 33 can be ejected to the region where R is formed. In this step, as shown in the drawing, the ejected red ink 33 is in a state where the central portion is raised due to the surface tension.

Next, as shown in FIG. 5E, the red ink 33 is provisionally baked by heating the entire substrate body 11 after the red ink 33 is discharged to about 180 ° C. to remove the solvent. By doing so, the colored portion 13R of the first color filter 13 can be formed. In this step, since the solvent is removed from the red ink 33 and the volume is reduced, the thickness of the formed colored portion 13R is the same as that of the transflective layer 1.
The thickness is about the same as the combined thickness of the colored portion 14R of the second color filter 14 and 2 or slightly smaller than the combined thickness of the semi-transmissive reflective layer 12 and the colored portion 14R of the second color filter 14.

Then, the steps shown in FIGS. 5D and 5E are similarly repeated for the green colored portion 13G and the blue colored portion 13B, whereby the colored portion 13 having a predetermined pattern is formed.
R to 13B are formed. Next, by heating the whole of the substrate main body 11 on which the colored portions 13R to 13B are formed to about 180 to 250 ° C., the colored portions 13R to 13B are main-baked, so that the colored portions 13R to 13B having a predetermined pattern are removed. The first color filter 13 can be formed.

As described above, the semi-transmissive reflective layer 12, the light shielding layer 15, the first color filter 13 and the second color filter 14 can be formed, and then the overcoat layer 16, the transparent electrode 17, The color filter substrate 10 can be manufactured by sequentially stacking the alignment films 18.

According to the method of manufacturing the color filter substrate described above, the first color filter 13 can be formed by the ink jet method. Therefore, both the first color filter 13 and the second color filter 14 are formed by photolithography. The manufacturing process can be simplified and the manufacturing cost can be reduced as compared with the case of forming by the method.

In the method of manufacturing the color filter substrate described above, when the first color filter 13 is formed by the ink jet method, the colored portions 13R having different colors are formed.
13B, the inkjet nozzle 60 is replaced every time when the ink is formed, and the ink is ejected and calcinated. However, the present invention is not limited to this.
Using an inkjet head provided with three types of inkjet nozzles 60 corresponding to the respective colored portions 13R to 13B,
While scanning the head, each colored portion 13R to 1 for each pixel
The colored portion 1 is formed by sequentially ejecting the red ink, the green ink, and the blue ink corresponding to the area where 3B is formed.
It is also possible to collectively form 3R to 13B. When the colored portions 13R to 13B are collectively formed in this way, the manufacturing process can be simplified and the manufacturing cost can be further reduced, which is preferable.

Although only the case of forming the second color filter 14 after forming the light shielding layer 15 has been described, the present invention is not limited to this, and the second color filter 14 is formed. After that, the light shielding layer 15 may be formed.

Further, in this embodiment, since the light shielding layer 15 is formed on the peripheral portion of each dot 32, the peripheral portion of each dot 32 that does not contribute to the display can be shielded, and the contrast of the display can be improved. This is preferable because it can be improved. However, even if the light shielding layer 15 is not formed,
When a sufficient contrast can be obtained, the light shielding layer 15 may not be formed. The method of manufacturing the color filter substrate described above can be applied even when the light shielding layer 15 is not formed. That is, when the second color filter 14 is formed, the colored portions 14R to 14B of the second color filter 14 function as partition walls, and the first color filter 13 can be formed by the inkjet method. The first and second color filters 13 and 14 can be formed without forming 15.

(Other Manufacturing Method of Color Filter Substrate) Next, another manufacturing method of the color filter substrate 10 provided in the transflective liquid crystal device 1 of this embodiment will be described with reference to FIG. 6 (a) to 6 (e)
FIG. 3 is a schematic cross-sectional view of the color filter substrate 10 being manufactured. In the method for manufacturing the color filter substrate, the case where the light shielding layer 15 is formed by the photolithography method has been described, but in the following method for manufacturing the color filter substrate, the case where the light shielding layer 15 is formed by the inkjet method will be described.

First, as shown in FIG. 6A, a semi-transmissive reflection layer 12 having a predetermined pattern is formed on the liquid crystal layer 30 side of the substrate body 11 by photolithography.
Next, as shown in FIG. 6B, the second color filter 14 is formed by photolithography on the substrate body 11 on which the semi-transmissive reflective layer 12 is formed. Since the method of forming the semi-transmissive reflective layer 12 and the second color filter 14 by the photolithography method has been described above, the description thereof will be omitted.

Next, the light shielding layer 15 is formed by the inkjet method. That is, as shown in FIG.
The inkjet nozzle 60 is filled with a black ink (light-shielding material) 35 prepared by dissolving a black pigment, a resin such as an acrylic resin in a solvent, and the black ink is discharged from the discharge nozzle 61 only in the region where the light-shielding layer 15 is formed. 35 is discharged. At this time, as shown in the drawing, the semi-transmissive reflective layer 12 and the second color filter 14 are provided around the region where the light shielding layer 15 is formed.
Since the colored portions 14R to 14B are formed, the semi-transmissive reflective layer 12 and the colored portions 14R to 14B function as partition walls, and the black ink 35 can be ejected to the region where the light shielding layer 15 is formed. Next, as shown in FIG.
By firing the black ink 33 and removing the solvent,
The light shielding layer 15 can be formed.

Next, as shown in FIG. 6 (e), the first color filter 13 (coloring portions 13R to 13B) is formed by the ink jet method. Since the method of forming the first color filter 13 by the inkjet method has been described above, the description thereof will be omitted. As described above, the semi-transmissive reflective layer 12, the light shielding layer 15, the first color filter 13, and the second color filter 14 can be formed, and then the overcoat layer 16 and the transparent electrode 1 are formed.
The color filter substrate 10 can be manufactured by sequentially stacking 7 and the alignment film 18.

According to the method of manufacturing the color filter substrate described above, the light shielding layer 15 can be formed by the ink jet method in addition to the first color filter 13.
It is possible to further simplify the manufacturing process and reduce the manufacturing cost as compared with the color filter manufacturing method described above. In the above-described method for manufacturing a color filter substrate, the case where the first color filter 13 is formed after firing the light shielding layer 15 has been described, but the present invention is not limited to this. The baking of the light shielding layer 15 is performed by coloring the colored portions 13R to 13B of the first color filter 13.
It may be performed at the same time as the main firing.

Further, the light shielding layer 1 is formed by the ink jet method.
Although the case where the first color filter 13 is formed by the inkjet method after forming 5 has been described, the present invention is not limited to this, and after forming the first color filter 13 by the inkjet method, The light shielding layer 15 may be formed by an inkjet method.

Further, the light shielding layer 15 and the colored portions 13R to 13B
Using an inkjet head having four types of inkjet nozzles 60 corresponding to, while scanning the head,
For each pixel, the region where the light-shielding layer 15 is formed, the colored portion 13R to
It is also possible to collectively form the light shielding layer 15 and the first color filter 13 by sequentially ejecting the black ink, the red ink, the green ink, and the blue ink corresponding to the region where 13B is formed. When the light shielding layer 15 and the first color filter 13 are collectively formed in this way, the manufacturing process can be simplified and the manufacturing cost can be further reduced, which is preferable.

(Other Manufacturing Method of Color Filter Substrate) Next, another manufacturing method of the color filter substrate 10 included in the transflective liquid crystal device 1 of the above embodiment will be described with reference to FIG. 7 (a) to (e)
FIG. 3 is a schematic cross-sectional view of the color filter substrate 10 being manufactured. In the method for manufacturing the color filter substrate described above, the case where the first color filter 13 is formed by the inkjet method after the second color filter 14 is formed by the photolithography method has been described. In the manufacturing method, a case where the first color filter 13 is formed by the photolithography method and then the second color filter 14 is formed by the inkjet method will be described.

First, as shown in FIG. 7A, the semi-transmissive reflective layer 12 (having a film thickness of 0.2) having a predetermined pattern is formed on the liquid crystal layer 30 side of the substrate body 11 by photolithography.
~ 0.3 μm) and the light shielding layer 15 (film thickness 1.0 to 2.0)
.mu.m) is sequentially formed. In addition, the semi-transmissive reflective layer 12,
Since the method of forming the light shielding layer 15 by the photolithography method has been described above, the description thereof will be omitted.

Next, as shown in FIG. 7B, the colored portions 13R to 13B having the patterns shown in FIGS. 2 and 3 are sequentially formed by the photolithography method to form the first color filter 13 (film). The thickness is about 1.0 to 2.0 μm). That is, the substrate body 1 on which the light shielding layer 15 is formed
1 is coated with a photosensitive resist containing a red pigment (green pigment, blue pigment) on the entire surface of 1 by a spin coating method or the like, and then the resist is baked, exposed, and developed to give a predetermined pattern of red. Colored portion 13R (green colored portion 1
3G, blue colored portion 13B) can be formed.

Next, the second color filter 14 (colored portions 14R to 14B) is formed by the inkjet method. That is, as shown in FIG. 7C, the ink jet nozzle 60 is filled with a red ink (coloring material) 34 prepared by dissolving a resin such as a red pigment or an acrylic resin in a solvent, and a second color filter. The red ink 34 is discharged from the discharge nozzle 61 only in the area where the colored portion 14R of 14 is formed.
The liquid droplet of is discharged. At this time, as shown in FIG.
Since the light shielding layer 15 and the colored portion 13R of the first color filter 13 are formed around the region where 4R is formed, the light shielding layer 15 and the colored portion 13R function as a partition wall, and the colored portion 14R is formed. The red ink 34 can be ejected to the area to be formed. Next, as shown in FIG. 7D, the red ink 34 is pre-baked to remove the solvent, whereby the colored portion 14R of the second color filter 14 can be formed.

Then, the steps shown in FIGS. 7C and 7D are similarly repeated for the green coloring portion 14G and the blue coloring portion 14B, whereby the coloring portion 14 having a predetermined pattern is formed.
R to 14B are formed. Next, the colored portions 14R to 14B are subjected to main firing to obtain a colored portion 14R having a predetermined pattern.
It is possible to form the second color filter 14 of 14B. As described above, the semi-transmissive reflective layer 12,
The light shielding layer 15, the first color filter 13, and the second color filter 14 can be formed, and then the overcoat layer 16, the transparent electrode 17, and the alignment film 18 are sequentially laminated to form the color filter substrate 10. Can be manufactured.

According to the method of manufacturing the color filter substrate described above, since the second color filter 14 can be formed by the ink jet method, both the first color filter 13 and the second color filter 14 are formed by photolithography. The manufacturing process can be simplified and the manufacturing cost can be reduced as compared with the case of forming by the method.
It should be noted that an inkjet head provided with three types of inkjet nozzles 60 corresponding to the colored portions 14R to 14B is used, and the colored portion 14R to
It is also possible to collectively form the colored portions 14R to 14B by sequentially ejecting the red ink, the green ink, and the blue ink corresponding to the region in which 14B is formed. When the colored portions 14R to 14B are collectively formed in this manner, the manufacturing process can be simplified and the manufacturing cost can be further reduced, which is preferable.

As described above, the first and second color filters 13,
The method of manufacturing the color filter substrate when any one of 14 is formed by the inkjet method has been described. According to such a color filter substrate manufacturing method, the manufacturing process can be simplified and the manufacturing cost can be reduced, which is preferable, but the present invention is not limited to this, and the manufacturing process can be simplified. Although the manufacturing cost cannot be reduced, the color filter substrate 10 can be manufactured by forming both the first and second color filters 13 and 14 by the photolithography method.

[Second Embodiment] (Structure of Transflective Liquid Crystal Device) Next, the structure of a transflective liquid crystal device according to a second embodiment of the present invention will be described. In this embodiment, as in the first embodiment, an application example of the present invention to a passive matrix type liquid crystal device will be shown. Since the basic configuration of the transflective liquid crystal device of this embodiment is the same as that of the first embodiment, the same components as those of the first embodiment are designated by the same reference numerals, and the description thereof will be omitted. Further, description will be made based on FIGS. 8 and 9 corresponding to FIGS. 2 and 3 of the first embodiment. Note that FIG. 8 is a schematic plan view of the color filter, the light-shielding layer, and the partition wall, which will be described later, included in the transflective liquid crystal device of the present embodiment, as viewed from the liquid crystal layer side.
FIG. 9 is a partial schematic cross-sectional view of the transflective liquid crystal device of this embodiment.

As shown in FIGS. 8 and 9, in the transflective liquid crystal device 2 of this embodiment, in each dot 32, the colored portions 13R to 13B of the first color filter 13 and the second color filter. It is different from the first embodiment only in that a partition wall 19 that partitions the fourteen colored portions 14R to 14B is formed. The partition wall 19 is formed on the semi-transmissive reflective layer 12 as long as it can partition the colored portions 13R to 13B of the first color filter 13 and the colored portions 14R to 14B of the second color filter 14. Although it may be formed, or may be formed in the opening 12a of the semi-transmissive reflective layer 12, the case where the partition wall 19 is formed on the semi-transmissive reflective layer 12 is illustrated.

As described above, in this embodiment, the partition 19 for partitioning the colored portions 13R to 13B of the first color filter 13 and the colored portions 14R to 14B of the second color filter 14 is provided. In addition to the effects similar to those of the above-described first embodiment, both the first color filter 13 and the second color filter 14 can be formed by an inkjet method. Therefore, it is possible to obtain the effect that the manufacturing process can be simplified and the manufacturing cost can be further reduced.

Here, the partition wall 19 may be formed with a width that can prevent the ink to be ejected from being mixed when the first color filter 13 and the second color filter 14 are formed. Specifically, the width of the partition wall 19 is 5 μm.
A degree is enough. Further, as the width of the partition wall 19 increases, the colored portions 13R to 13B or the colored portions 14R to
Since the formation area of 14B is reduced, it is preferable to design in consideration of these points.

The partition wall 19 may be made of any material, but is preferably made of a transparent material such as transparent resin. When the partition wall 19 is formed on the semi-transmissive reflective layer 12 and is made of a translucent material, the light reflected by the semi-transmissive reflective layer 12 and incident on the partition wall 19 is displayed when the display is performed in the reflective mode. Since the light passes through the partition wall 19 and is emitted to the observer side, the amount of light emitted to the observer side can be increased, and the brightness of the display can be improved, which is preferable.

The partition wall 19 may be made of the same material as the light shielding layer 15 (light shielding material). In this case,
Although the effect of improving the brightness of the display cannot be obtained, the light shielding layer 15 and the partition 19 can be formed in the same step, so that the effect of simplifying the manufacturing process and reducing the manufacturing cost can be obtained. At the same time, it is possible to obtain an effect that it is possible to suppress a decrease in contrast when displaying in the transmission mode.

(Method for Manufacturing Color Filter Substrate) Next,
A method of manufacturing the color filter substrate 10 included in the transflective liquid crystal device 1 according to the present embodiment will be described with reference to FIGS. 10 (a) to 10 (e) and FIG.
(A)-(c) shows the color filter substrate 10 in the process of manufacture.
FIG. First, as shown in FIG. 10A, a semi-transmissive reflective layer 12 and a light shielding layer 15 having a predetermined pattern are sequentially formed on the liquid crystal layer 30 side of the substrate body 11 by a photolithography method. In addition, the semi-transmissive reflective layer 12,
Since the method of forming the light shielding layer 15 by the photolithography method has been described above, the description thereof will be omitted.

Next, as shown in FIG. 10B, on the substrate body 11 on which the semi-transmissive reflective layer 12 and the light shielding layer 15 are formed,
The partition wall 19 having the pattern shown in FIGS. 8 and 9 is formed by photolithography. That is, a resist (partition material) having photosensitivity is applied to the entire surface of the substrate main body 11 on which the semi-transmissive reflective layer 12 and the light shielding layer 15 are formed, and then the resist is baked, exposed, and developed. Thereby, the partition wall 19 having a predetermined pattern can be formed.

Next, the first color filter 13 (coloring portions 13R to 13B) is formed by the inkjet method. That is, as shown in FIG. 10C, the ink jet nozzle 60 is filled with the red ink (coloring material) 33, and only the region where the colored portion 13R of the first color filter 13 is formed is discharged from the discharge nozzle 61 to the red color. A droplet of ink 33 is ejected. At this time, as shown in the figure, since the partition 19 is formed around the region where the colored portion 13R of the first color filter 13 is formed, the red ink 33 is ejected to the portion surrounded by the partition 19. can do. Next, as shown in FIG. 10D, the colored portion 13R of the first color filter 13 can be formed by temporarily firing the red ink 33.

Then, by repeating the steps shown in FIGS. 10C and 10D for the green colored portion 13G and the blue colored portion 13B, as shown in FIG.
The colored portions 13R to 13B having a predetermined pattern are formed. Next, the colored portions 13R to 13B are main-baked, whereby the first color filter 13 including the colored portions 13R to 13B having a predetermined pattern can be formed.

Next, the second color filter 14 (coloring portions 14R to 14B) is formed by the inkjet method. That is, as shown in FIG. 11A, the ink jet nozzle 60 is filled with the red ink (coloring material) 34, and only the region where the colored portion 14R of the second color filter 14 is formed is discharged from the discharge nozzle 61 to the red color. A droplet of ink 34 is ejected. At this time, as shown in the drawing, since the partition wall 19 and the light shielding layer 15 are formed around the region where the colored portion 14R of the second color filter 14 is formed, the partition wall 19 and the light shielding layer 15 are surrounded. The red ink 34 can be ejected onto the portion. Next, as shown in FIG. 11B, the colored portion 14R of the second color filter 14 can be formed by temporarily firing the red ink 34.

Then, the steps shown in FIGS. 11A and 11B are similarly repeated for the green colored portion 14G and the blue colored portion 14B, so that as shown in FIG. 11C.
The colored portions 14R to 14B having a predetermined pattern are formed. Next, the colored portions 14R to 14B are main-baked to form the second color filter 14 including the colored portions 14R to 14B having a predetermined pattern. As described above, the semi-transmissive reflective layer 12, the light shielding layer 15, the partition wall 19, the first color filter 13, and the second color filter 14 can be formed, and then the overcoat layer 16,
The color filter substrate 10 can be manufactured by sequentially stacking the transparent electrode 17 and the alignment film 18.

According to the method of manufacturing the color filter substrate described above, both the first color filter 13 and the second color filter 14 can be formed by the ink jet method. Therefore, the color filter substrate of the first embodiment can be manufactured. Compared with the manufacturing method, the manufacturing process can be simplified and the manufacturing cost can be further reduced. In the above-described method for manufacturing a color filter substrate, the case where the partition 19 is formed after forming the light shielding layer 15 has been described, but the present invention is not limited to this, and the partition 19 is not limited thereto.
After forming, the light shielding layer 15 may be formed. Further, when the partition wall 19 is made of the same material as the light blocking layer 15, the partition wall 19 and the light blocking layer 15 can be formed in the same step.

In the method of manufacturing the color filter substrate described above, the colored portion 13 of the first color filter 13 is used.
Although the case where the second color filter 14 is formed after the main firing of R to 13B has been described, the present invention is not limited to this, and the first color filter 1
The main baking of the colored portions 13R to 13B of No. 3 may be performed simultaneously with the main baking of the colored portions 14R to 14B of the second color filter 14. Further, although the case where the second color filter 14 is formed by the inkjet method after the first color filter 13 is formed by the inkjet method has been described, the present invention is not limited to this.
After forming the second color filter 14 by the inkjet method, the first color filter 13 may be formed by the inkjet method.

Further, the colored portions 13R to 13B and the colored portion 1
Using an inkjet head provided with six types of inkjet nozzles 60 corresponding to 4R to 14B, while scanning the head, corresponding to the regions for forming the colored portions 13R to 13B and the colored portions 14R to 14B for each pixel, By sequentially ejecting six types of ink, the colored portions 13R to 13R
It is also possible to collectively form B and the colored portions 14R to 14B. When the colored portions 13R to 13B and the colored portions 14R to 14B are collectively formed in this way, the manufacturing process can be simplified and the manufacturing cost can be further reduced, which is preferable.

[Third Embodiment] Next, the structure of a transflective liquid crystal device according to a third embodiment of the present invention will be described with reference to FIG. In the first and second embodiments, the passive matrix type transflective liquid crystal device has been described, but in the present embodiment, the TFT (Thin-F) is used.
An application example of the present invention to an active matrix type transflective liquid crystal device using an ilm transistor) as a switching element will be described. FIG. 12 is an exploded schematic perspective view showing the overall configuration of the transflective liquid crystal device of this embodiment. In addition,
FIG. 12 is a diagram showing only the liquid crystal panel provided in the transflective liquid crystal device of the present embodiment, and is a diagram corresponding to FIG. 1 of the first embodiment. Also in this embodiment, the upper side is shown as the observer side (viewing side).

The transflective liquid crystal device 3 of this embodiment is
A liquid crystal panel composed of a color filter substrate 80 and an element substrate (opposite substrate) 90 which are opposed to each other with a liquid crystal layer (not shown) interposed therebetween, and a backlight (opposite to the viewing side of the liquid crystal panel). (Not shown).

In the element substrate 90, the TFT element 94, the pixel electrode 95, etc. are formed on the surface of the substrate body 91 on the liquid crystal layer side.
An alignment film (not shown) is formed on the side of these liquid crystal layers, and is generally configured. More specifically, in the element substrate 90, a large number of data lines 92 and a large number of scanning lines 93 are provided in a grid pattern on the surface of the substrate body 91 so as to intersect each other. A TFT element 94 is formed near the intersection of each data line 92 and each scanning line 93.
Pixel electrode 95 is connected via 4. Looking at the entire surface of the element substrate 90 on the liquid crystal layer side, a large number of pixel electrodes 95
Are arranged in a matrix, and in the semi-transmissive reflection type liquid crystal device 3, the region where each pixel electrode 95 is formed and its peripheral portion are individual dots.

The color filter substrate 80 has the same structure as the color filter substrate included in the semi-transmissive reflection type liquid crystal device of the first embodiment, and instead of a plurality of transparent electrodes formed in stripes. , A common electrode 81 formed on substantially the entire surface of the color filter substrate 80. That is, the color filter substrate 80 is
A semi-transmissive reflective layer 12 on the liquid crystal layer side surface of the substrate body 11,
First color filter 1 including colored portions 13R to 13B
3, a second color filter 14 including colored portions 14R to 14B, a light shielding layer 15, an overcoat layer (not shown), a common electrode 81, and an alignment film (not shown) are formed. Has been done.

Although the first color filter 13 and the second color filter 14 are shown together for the sake of simplification in the drawing, in reality, as described in the first embodiment, Colored portions 13R to 1 of the first color filter 13
3B is formed corresponding to the light transmitting part of the semi-transmissive reflective layer 12, whereas the second color filter 14 is formed corresponding to the light reflective part of the semi-transmissive reflective layer 12.

As described above, the present invention can also be applied to an active matrix type transflective liquid crystal device using a TFT element. According to this embodiment, the first and second embodiments are provided.
Similar to the embodiment, the first and the second light-transmitting portions of the semi-transmissive reflecting layer 12 have different spectral characteristics corresponding to the light-transmitting portion and the light-reflecting portion,
Since the second color filters 13 and 14 are formed, the color purity of the display when the display is performed in the transmissive mode is improved without reducing the brightness and the color purity of the display when the display is performed in the reflective mode. Thus, it is possible to provide a transflective liquid crystal device having excellent display quality.

[Fourth Embodiment] Next, the structure of a semi-transmissive reflective liquid crystal device according to a fourth embodiment of the present invention will be described with reference to FIG. In this embodiment, TFD (Th
An application example of the present invention to an active matrix type transflective liquid crystal device using an in-Film Diode) element as a switching element will be described. FIG. 13 is an exploded schematic perspective view showing the overall configuration of the transflective liquid crystal device of this embodiment. In addition,
FIG. 13 is a diagram showing only the liquid crystal panel provided in the transflective liquid crystal device of the present embodiment, and is a diagram corresponding to FIG. 1 of the first embodiment. Also in this embodiment, the upper side is shown as the observer side (viewing side).

The transflective liquid crystal device 4 of this embodiment is
A liquid crystal panel composed of a color filter substrate 100 and an element substrate (counter substrate) 110 which are arranged opposite to each other with a liquid crystal layer (not shown) interposed therebetween, and a backlight (opposite to the viewing side of the liquid crystal panel). (Not shown).

The element substrate 110 is formed by forming a TFD element 114, a pixel electrode 113 and the like on the surface of the substrate body 111 on the liquid crystal layer side, and by forming an alignment film (not shown) on the liquid crystal layer side. There is. More specifically, the element substrate 11
0, a large number of data lines 1 on the surface of the substrate body 111.
12 are provided in a stripe shape, and each data line 11
A large number of pixel electrodes 113 are connected to 2 via TFD elements 114. When the entire surface of the element substrate 110 on the liquid crystal layer side is viewed, a large number of pixel electrodes 113 are arranged in a matrix, and in the transflective liquid crystal device 4, a region in which each pixel electrode 113 is formed and a peripheral portion thereof are formed. It is an individual dot.

The color filter substrate 100 has the same structure as the color filter substrate included in the transflective liquid crystal device of the first embodiment, and instead of a plurality of transparent electrodes formed in stripes. Element substrate 110
The data lines 112 are provided with a plurality of strip-shaped scanning lines (counter electrodes) 101 formed in a direction intersecting the extending direction of the data lines 112. That is, the color filter substrate 100 includes a semi-transmissive reflection layer 12, a first color filter 13 including colored portions 13R to 13B, and a second color portion including colored portions 14R to 14B on the liquid crystal layer side surface of the substrate body 11. A color filter 14, a light-shielding layer 15, an overcoat layer (not shown), a scanning line 101, and an alignment film (not shown) are formed and are generally configured.

Although the first color filter 13 and the second color filter 14 are shown together for simplification in the drawing, in reality, as described in the first embodiment, Colored portions 13R to 1 of the first color filter 13
3B is formed corresponding to the light transmitting part of the semi-transmissive reflective layer 12, whereas the second color filter 14 is formed corresponding to the light reflective part of the semi-transmissive reflective layer 12.

As described above, the present invention can be applied to an active matrix type liquid crystal device using a TFD element. According to the present embodiment, as in the first and second embodiments, a semi-transmissive type is used. Since the first and second color filters 13 and 14 having different spectral characteristics are formed so as to correspond to the light transmitting portion and the light reflecting portion of the reflective layer 12, respectively, the display of the display in the reflective mode can be improved. It is possible to improve the color purity of the display when the display is performed in the transmissive mode without lowering the brightness and the color purity, and it is possible to provide a transflective liquid crystal device having excellent display quality.

[Fifth Embodiment] (Structure of Transflective Liquid Crystal Device) Next, a structure of a transflective liquid crystal device according to a fifth embodiment of the present invention will be described. In this embodiment, as in the first embodiment, an application example of the present invention to a passive matrix type liquid crystal device will be shown. Since the basic configuration of the transflective liquid crystal device of this embodiment is the same as that of the first embodiment, the same components as those of the first embodiment are designated by the same reference numerals, and the description thereof will be omitted. Moreover, it demonstrates based on FIG. 14 corresponding to FIG. 2 of 1st Embodiment. Note that FIG. 14 is a schematic plan view of the semi-transmissive reflective layer, the color filter, and the light-shielding layer provided in the semi-transmissive reflective liquid crystal device of the present embodiment when viewed from the liquid crystal layer side.

As shown in FIG. 14, in the transflective liquid crystal device 5 of this embodiment, in each dot 32, two light beams formed on one diagonal of the rectangular region of the transflective layer 12 are formed. The first color filter 13 is formed corresponding to the transmissive portions (openings 12a, 12a), and the light reflective portion of the semi-transmissive reflective layer 12 (the area excluding the portions where the openings 12a, 12a are formed). The second embodiment is different from the first embodiment only in that a second color filter 14 having a spectral characteristic different from that of the first color filter 13 is formed corresponding to the above.

As described above, in the present embodiment, the two light transmitting portions (openings 12a and 1) formed in the semi-transmissive reflective layer 12 are formed.
Forming a first color filter 13 corresponding to 2a),
Since the second color filter 14 is formed corresponding to the light reflecting portion of the semi-transmissive reflective layer 12 (the area excluding the portions where the openings 12a, 12a are formed), the same effect as that of the first embodiment is obtained. be able to.

In the transflective liquid crystal device 5 of this embodiment, two light transmissive portions (openings 12a, 12a) are formed on one diagonal of the rectangular region of the transflective layer 12. However, the two light transmitting portions (openings 12a, 1
2a) may be formed in the rectangular area of the semi-transmissive reflective layer 12, and may be formed on the other diagonal line of the rectangular area of the semi-transmissive reflective layer 12. The structure may be formed along the longitudinal direction of 12 rectangular regions. Further, the number of light transmitting parts is not limited to two, and a plurality of openings may be formed.

[Sixth Embodiment] (Structure of transflective liquid crystal device) Next, a structure of a transflective liquid crystal device according to a sixth embodiment of the present invention will be described. In this embodiment, as in the first embodiment, an application example of the present invention to a passive matrix type liquid crystal device will be shown. Since the basic configuration of the transflective liquid crystal device of this embodiment is the same as that of the first embodiment, the same components as those of the first embodiment are designated by the same reference numerals, and the description thereof will be omitted. Further, description will be given based on FIG. 15 corresponding to FIG. 2 of the first embodiment. Note that FIG. 15 is a schematic plan view of the semi-transmissive reflective layer, the color filter, and the light-shielding layer provided in the transflective liquid crystal device of the present embodiment when viewed from the liquid crystal layer side.

As shown in FIG. 15, in the transflective liquid crystal device 6 of this embodiment, each dot 32 has a rectangular shape formed at one end of a rectangular region of the transflective layer 12. The first color filter 13 is formed corresponding to the light transmitting portion (opening 12a), and also corresponds to the light reflecting portion of the semi-transmissive reflective layer 12 (area excluding the portion where the opening 12a is formed). The second embodiment is different from the first embodiment only in that a second color filter 14 having a spectral characteristic different from that of the first color filter 13 is formed.

As described above, in this embodiment, the rectangular light transmitting portion (opening 12a) formed in the semi-transmissive reflective layer 12 is used.
Since the first color filter 13 is formed corresponding to the above, and the second color filter 14 is formed corresponding to the light reflecting portion of the semi-transmissive reflection layer 12 (the area excluding the portion where the opening 12a is formed). The same effect as the first embodiment can be obtained.

In the transflective liquid crystal device 6 of this embodiment, a rectangular light transmitting portion (opening 12a) is formed at one end of the rectangular region of the transflective layer 12. However, the light transmitting portion (opening 12a) is the semi-transmissive reflective layer 1
It suffices that it is formed in the two rectangular regions, and it may be formed in the other end of the rectangular region of the semi-transmissive reflective layer 12.

[Seventh Embodiment] (Structure of transflective liquid crystal device) Next, a structure of a transflective liquid crystal device according to a seventh embodiment of the present invention will be described. In the present embodiment, as in the case of the fifth embodiment, an application example of the present invention to a passive matrix type liquid crystal device will be shown. The basic configuration of the semi-transmissive reflective liquid crystal device of this embodiment is the same as that of the fifth embodiment. Therefore, the same components as those of the fifth embodiment are designated by the same reference numerals, and the description thereof will be omitted. Further, description will be given based on FIG. 16 corresponding to FIG. 14 of the fifth embodiment. Note that FIG. 16 is a schematic plan view of the semi-transmissive reflective layer, the color filter, and the light-shielding layer provided in the semi-transmissive reflective liquid crystal device of the present embodiment when viewed from the liquid crystal layer side.

As shown in FIG. 16, in the transflective liquid crystal device 7 of this embodiment, four dots formed in each of the four corners of the rectangular region of the transflective layer 12 in each dot 32. The first color filter 13 is formed so as to correspond to the light transmitting portions (openings 12a, 12a, ...), and the light reflecting portions (openings 12a, 1) of the semi-transmissive reflection layer 12 are formed.
The second embodiment is different from the fifth embodiment only in that a second color filter 14 having a spectral characteristic different from that of the first color filter 13 is formed corresponding to a region other than a portion where 2a, ... Is formed. Is different.

As described above, in this embodiment, the four light-transmitting portions (openings 12a, 1) formed in the semi-transmissive reflective layer 12 are formed.
2a, ..., and the first color filter 13 is formed, and the light reflection portions (openings 12a, 12) of the semi-transmissive reflection layer 12 are formed.
Since the second color filter 14 is formed corresponding to the area excluding the portion where a, ... Is formed, the same effect as that of the fifth embodiment can be obtained.

[Eighth Embodiment] (Structure of transflective liquid crystal device) Next, a structure of a transflective liquid crystal device of an eighth embodiment according to the present invention will be described. In this embodiment, as in the first embodiment, an application example of the present invention to a passive matrix type liquid crystal device will be shown. Since the basic configuration of the transflective liquid crystal device of this embodiment is the same as that of the first embodiment, the same components as those of the first embodiment are designated by the same reference numerals, and the description thereof will be omitted. Further, description will be given based on FIG. 17 corresponding to FIG. 2 of the first embodiment. Note that FIG. 17 is a schematic plan view of the semi-transmissive reflective layer, the color filter, and the light-shielding layer included in the semi-transmissive reflective liquid crystal device of the present embodiment when viewed from the liquid crystal layer side.

As shown in FIG. 17, in the transflective liquid crystal device 7 of the present embodiment, each dot 32 has a rectangular shape formed on both sides in the longitudinal direction of the rectangular region of the transflective layer 12. The first color filter 13 is formed corresponding to the light transmitting portions (slit portions 12c, 12c), and the light reflecting portion (slit portions 12c, 12c) of the semi-transmissive reflective layer 12 is formed.
12c corresponding to the area other than the area where the 12c is formed.
Having a spectral characteristic different from that of the color filter 13 of
The only difference is that the color filter 14 of
Different from the embodiment.

As described above, in this embodiment, the first color filter 1 is provided corresponding to the rectangular light transmitting portions (slit portions 12c, 12c) formed on both sides of the semi-transmissive reflective layer 12.
3 is formed, and the second color filter 14 is formed corresponding to the light reflecting portion of the semi-transmissive reflecting layer 12 (the area excluding the portions where the slit portions 12c, 12c are formed).
The same effect as the embodiment can be obtained.

In the transflective liquid crystal device 7 of this embodiment, the rectangular transmissive portions (slits 12c, 12c) are formed on both sides of the transflective layer 12; The portions (slit portions 12c, 12c) may be formed on one side of the rectangular region of the semi-transmissive reflective layer 12.

[Ninth Embodiment] (Structure of transflective liquid crystal device) Next, a structure of a transflective liquid crystal device according to a ninth embodiment of the present invention will be described. In this embodiment, similarly to the eighth embodiment, an application example of the present invention to a passive matrix type liquid crystal device will be shown. Since the basic configuration of the transflective liquid crystal device of this embodiment is the same as that of the eighth embodiment, the same components as those of the eighth embodiment are designated by the same reference numerals and the description thereof will be omitted. Further, description will be given based on FIG. 18 corresponding to FIG. 17 of the eighth embodiment. Note that FIG. 18 is a schematic plan view of the semi-transmissive reflective layer and the color filter provided in the transflective liquid crystal device of the present embodiment, as viewed from the liquid crystal layer side.

As shown in FIG. 18, in the transflective liquid crystal device 8 of the present embodiment, the light shielding layer 15 between the adjacent transflective layers 12 and 12 is removed in each dot 32. However, it is different from the eighth embodiment. As described above, in this embodiment, the adjacent semi-transmissive reflective layers 12, 1 are adjacent to each other.
Since the light shielding layer 15 between the two is removed, the same effect as that of the eighth embodiment can be obtained.

In the transflective liquid crystal device 8 of this embodiment, the rectangular light transmissive portions (slits 12c, 12c) are formed on both sides of the transflective layer 12, but this light is used. The transmission part (slit parts 12c, 12c) is
It may be formed on one side of the rectangular region of the semi-transmissive reflective layer 12.

In the above first to ninth embodiments, the case where the color filter substrate is located on the backlight side has been described, but the present invention is not limited to this, and the present invention is not limited to this. It is also applicable when the color filter substrate is located on the observer side. However, when disposing the color filter substrate on the viewer side, it is necessary to form a semi-transmissive reflective layer on the counter substrate side.

[Electronic Equipment] Next, specific examples of electronic equipment including any one of the transflective liquid crystal devices 1 to 8 according to the above-described embodiment of the present invention will be described. FIG. 19A shows
It is a perspective view showing an example of a mobile phone. In FIG. 19A, reference numeral 500 denotes a mobile phone main body, and 501 denotes a liquid crystal display unit including any of the transflective liquid crystal devices 1 to 4. FIG. 19B is a perspective view showing an example of a portable information processing device such as a word processor and a personal computer. In FIG. 14B, reference numeral 600 is an information processing device, 601 is an input unit such as a keyboard, 603 is an information processing main body, and 602 is a liquid crystal display unit including any of the above-described transflective liquid crystal devices 1 to 4. Is shown. FIG. 19
(C) is a perspective view showing an example of a wristwatch type electronic device. In FIG. 19 (c), 700 indicates a watch body,
Reference numeral 701 denotes a liquid crystal display unit including any of the above-described transflective liquid crystal devices 1 to 4. 19 (a)-
Since the electronic device shown in (c) includes any of the transflective liquid crystal devices 1 to 8 of the above-described embodiment, the brightness and color purity of the display when performing display in the reflection mode are reduced. It is possible to improve the color purity of the display when the display is performed in the transmissive mode without performing the above operation, resulting in excellent display quality.

[0131]

As described above in detail, according to the present invention, the first color filter having different spectral characteristics and the first color filter having different spectral characteristics are provided corresponding to the light transmitting portion and the light reflecting portion of the semi-transmissive reflecting layer, respectively. Since the structure for forming the second color filter is adopted, by mounting it in the semi-transmissive reflective liquid crystal device, the display in the transmissive mode can be performed without lowering the brightness and color purity of the display in the reflective mode. It is possible to provide a color filter substrate for a transflective liquid crystal device that can improve the color purity of display when performing.

Further, according to the method of manufacturing the color filter substrate of the present invention, at least one of the first color filter and the second color filter can be formed by the ink jet method. Can be simplified and the manufacturing cost can be reduced.

Further, by providing the color filter substrate of the present invention, the color purity of the display when the display is performed in the transmission mode is improved without lowering the brightness and the color purity of the display when the display is performed in the reflection mode. Therefore, the liquid crystal device (semi-transmissive reflection type liquid crystal device) of the present invention having excellent display quality can be provided. Further, by including the liquid crystal device (semi-transmissive reflection type liquid crystal device) of the present invention, it is possible to reduce the brightness of the display and the color purity of the display when the display is performed in the reflection mode, and It is possible to provide the electronic device of the present invention which can improve color purity and is excellent in display quality.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing an overall configuration of a transflective liquid crystal device according to a first embodiment of the invention.

FIG. 2 is a schematic plan view showing a main part of the transflective liquid crystal device according to the first embodiment of the invention, and is a schematic plan view of a color filter and a light-shielding layer when viewed from the liquid crystal layer side.

FIG. 3 is a partial schematic cross-sectional view of the transflective liquid crystal device according to the first embodiment of the present invention.

FIG. 4 is a diagram showing an example of spectral characteristics of a color filter of the transflective liquid crystal device according to the first embodiment of the present invention, and FIG. 4A is a color filter when displaying in a reflection mode. FIG. 4B is a diagram showing the spectral characteristic of the color filter when performing display in the transmission mode.

FIG. 5 is a process drawing showing the manufacturing method of the color filter substrate provided in the transflective liquid crystal device according to the first embodiment of the present invention.

FIG. 6 is a process drawing showing another method for manufacturing the color filter substrate included in the transflective liquid crystal device according to the first embodiment of the present invention.

FIG. 7 is a process chart showing another method for manufacturing the color filter substrate included in the transflective liquid crystal device according to the first embodiment of the present invention.

FIG. 8 is a schematic plan view of a color filter, a light shielding layer, and a partition included in the transflective liquid crystal device according to the second embodiment of the present invention when viewed from the liquid crystal layer side.

FIG. 9 is a partial schematic cross-sectional view of a semi-transmissive reflective liquid crystal device according to a second embodiment of the present invention.

FIG. 10 is a process drawing showing the manufacturing method of the color filter substrate included in the transflective liquid crystal device according to the second embodiment of the present invention.

FIG. 11 is a process drawing showing the manufacturing method of the color filter substrate included in the transflective liquid crystal device according to the second embodiment of the present invention.

FIG. 12 is an exploded schematic perspective view showing an overall configuration of a semi-transmissive reflective liquid crystal device according to a third embodiment of the invention.

FIG. 13 is an exploded schematic perspective view showing an overall configuration of a semi-transmissive reflective liquid crystal device according to a fourth embodiment of the present invention.

FIG. 14 is a schematic plan view showing a main part of a semi-transmissive reflective liquid crystal device according to a fifth embodiment of the present invention, showing a schematic view of a semi-transmissive reflective layer, a color filter, and a light-shielding layer when viewed from the liquid crystal layer side. It is a top view.

FIG. 15 is a schematic plan view showing an essential part of a semi-transmissive reflective liquid crystal device according to a sixth embodiment of the present invention, which is a schematic view of a semi-transmissive reflective layer, a color filter, and a light shielding layer when viewed from the liquid crystal layer side. It is a top view.

FIG. 16 is a schematic plan view showing a main part of a semi-transmissive reflective liquid crystal device according to a seventh embodiment of the present invention, showing a schematic view of a semi-transmissive reflective layer, a color filter, and a light shielding layer when viewed from the liquid crystal layer side. It is a top view.

FIG. 17 is a schematic plan view showing a main part of a semi-transmissive reflective liquid crystal device according to an eighth embodiment of the present invention, which is a schematic view of a semi-transmissive reflective layer, a color filter, and a light-shielding layer when viewed from the liquid crystal layer side. It is a top view.

FIG. 18 is a schematic plan view showing a main part of a semi-transmissive reflective liquid crystal device according to a ninth embodiment of the present invention, which is a schematic plan view of the semi-transmissive reflective layer and the color filter as seen from the liquid crystal layer side. is there.

FIG. 19 is a diagram showing an example of an electronic apparatus including the transflective liquid crystal device of the present invention, and FIG. 19A is an example of a mobile phone including the transflective liquid crystal device of the above embodiment. FIG. 19B is a diagram showing an example of a portable information processing device including the transflective liquid crystal device of the above embodiment, and FIG. 19C is a transflective liquid crystal device of the above embodiment. It is a figure which shows an example of the wristwatch type electronic device provided with the liquid crystal device.

FIG. 20 is a diagram showing an example of spectral characteristics of a conventional transflective liquid crystal device color filter, and FIG.
FIG. 20B is a diagram showing the spectral characteristic of the color filter when displaying in the reflective mode, and FIG. 20B is a diagram showing the spectral characteristic of the color filter when performing display in the transmissive mode.

[Explanation of symbols]

1, 2, 3, 4, 5, 6, 7, 8 Semi-transmissive reflective liquid crystal device (liquid crystal device) 40 Liquid crystal panel 10, 80, 100 Color filter substrate 20 Counter substrate 90, 110 Element substrate (counter substrate) 11, 21, 91, 111 Substrate body 12 Semi-transmissive reflective layer 12a Opening (light transmitting portion) 12b Opening 12c Slit portion (light transmitting portion) 13 First color filter 13R, 13G, 13B Coloring portion 14 Second color filter 14R, 14G, 14B Coloring part 15 Light-shielding layer 19 Partition 30 Liquid crystal layer 32 Dot 50 Backlight (illuminating means)

Claims (21)

[Claims] 1. A color forming a liquid crystal panel, comprising a semi-transmissive reflective layer having a light transmissive portion and a light reflective portion on a substrate body, and a color filter comprising a plurality of colored portions having different colors. In the filter substrate, a first color filter formed corresponding to the light transmitting portion of the semi-transmissive reflective layer, and a second color filter formed corresponding to the light reflective portion of the semi-transmissive reflective layer. And a spectral characteristic of the first color filter and the second color filter that are different from each other. 2. A substrate main body is provided with a color filter composed of a plurality of colored portions having different colors, and is provided between a counter substrate provided with a semi-transmissive reflective layer having a light transmissive portion and a light reflective portion. In a color filter substrate that constitutes a liquid crystal panel by sandwiching a liquid crystal layer, a first color filter formed corresponding to the light transmitting portion of the semi-transmissive reflective layer, and the light of the semi-transmissive reflective layer. A color filter substrate comprising: a second color filter formed corresponding to the reflection part, wherein the first color filter and the second color filter have different spectral characteristics. 3. The color purity of the first color filter is
The color filter substrate according to claim 1, wherein the color purity is higher than the color purity of the second color filter. 4. The spectral characteristics of the first and second color filters are adjusted by the composition of the colored portion or the composition and thickness of the colored portion. The color filter substrate according to claim 1. 5. The semi-transmissive reflective layer has both the light transmissive portion and the light reflective portion formed for each dot constituting the display area of the liquid crystal panel, and is formed in the same dot. 5. The color filter substrate according to claim 1, wherein the colored portion of the first color filter and the colored portion of the second color filter have the same color. . 6. The color filter substrate according to claim 5, further comprising a light-shielding layer formed on a peripheral portion of each dot constituting the display area of the liquid crystal panel. 7. A partition partitioning the colored portion of the first color filter and the colored portion of the second color filter is formed in each dot constituting the display area of the liquid crystal panel. The color filter substrate according to claim 6, wherein 8. The method for manufacturing a color filter substrate according to claim 5, wherein the second color filter is formed on the substrate body by a photolithography method, and the second color filter is formed. On the substrate body formed with the above, after ejecting a droplet of a coloring material by an inkjet method to a region corresponding to the light transmitting portion of the semi-transmissive reflective layer, the ejected coloring material is baked, thereby 1. A method of manufacturing a color filter substrate, comprising the step of forming a color filter No. 1. 9. The color according to claim 8, further comprising a step of forming a light-shielding layer on the substrate main body by a photolithography method at a peripheral portion of each dot forming a display region of the liquid crystal panel. Method of manufacturing filter substrate. 10. The droplet of the light-shielding material is ejected at a predetermined position on the substrate main body on which the second color filter is formed by an inkjet method, and the ejected light-shielding material is then baked, 9. The method for manufacturing a color filter substrate according to claim 8, further comprising a step of forming a light shielding layer on a peripheral portion of each dot forming a display area of the liquid crystal panel. 11. The method for manufacturing a color filter substrate according to claim 6, wherein the light shielding layer is formed on the substrate body, and the first color is formed on the substrate body by a photolithography method. A step of forming a filter, and a liquid of a coloring material by an inkjet method in an area corresponding to the light reflecting portion of the semi-transmissive reflective layer on the substrate body on which the light shielding layer and the first color filter are formed. A step of forming the second color filter by firing the ejected coloring material after ejecting the droplets. 12. The method for manufacturing a color filter substrate according to claim 7, wherein the step of forming the light shielding layer on the substrate body, the step of forming the partition wall on the substrate body, In the substrate body in which the light shielding layer and the partition wall are formed, a droplet of a coloring material is ejected by an inkjet method onto a region corresponding to the light transmitting portion of the semi-transmissive reflective layer, and then the ejected coloring material is baked. The step of forming the first color filter, and in the substrate body on which the light shielding layer and the partition wall are formed, a region corresponding to the light reflecting portion of the semi-transmissive reflective layer is colored by an inkjet method. A step of forming the second color filter by firing the discharged coloring material after the droplets of the material have been ejected. The method of production. 13. A liquid crystal panel comprising a color filter substrate and a counter substrate which are arranged to face each other with a liquid crystal layer sandwiched therebetween, and an illuminating unit which is arranged on a side opposite to a viewing side of the liquid crystal panel. One of the filter substrate and the counter substrate is provided with a semi-transmissive reflective layer having a light transmissive portion and a light reflective portion, and the color filter substrate includes a plurality of colored portions having different colors. A liquid crystal device in which a display is provided by switching between a transmissive mode and a reflective mode, the color filter substrate having a first color formed corresponding to the light transmissive portion of the semi-transmissive reflective layer. A filter,
A second color filter formed corresponding to the light reflecting portion of the semi-transmissive reflective layer, wherein the first color filter and the second color filter have different spectral characteristics. Liquid crystal device. 14. The liquid crystal device according to claim 13, wherein the color purity of the first color filter is higher than the color purity of the second color filter. 15. The spectral characteristics of the first and second color filters are adjusted by the composition of the colored portion or the composition and thickness of the colored portion. The liquid crystal device described. 16. The semi-transmissive reflective layer has both the light transmissive portion and the light reflective portion formed for each dot constituting a display area of the liquid crystal panel, and the transflective layer is formed in the same dot. 14. The colored portion of the first color filter and the colored portion of the second color filter have the same color.
4. The liquid crystal device according to 4 or 15. 17. The liquid crystal device according to claim 16, wherein the color filter substrate includes a light shielding layer formed on a peripheral portion of each dot forming a display area of the liquid crystal panel. 18. In each dot forming a display area of the liquid crystal panel, the colored portion of the first color filter and the colored portion of the second color filter are partitioned on the color filter substrate. 18. The liquid crystal device according to claim 17, wherein a partition is formed. 19. The semi-transmissive reflective layer is composed of a reflective layer having an opening, the opening functions as the light transmitting portion, and the reflective layer except the portion where the opening is formed is the light reflective layer. 14. It functions as a part.
19. The liquid crystal device according to claim 18. 20. The semi-transmissive reflective layer is composed of a reflective layer having a slit portion on one side or both sides, the slit portion functions as the light transmitting portion, and the portion except the portion where the slit portion is formed is formed. The liquid crystal device according to any one of claims 13 to 18, wherein a reflective layer functions as the light reflecting portion. 21. An electronic device comprising the liquid crystal device according to claim 13. Description: