JP4003451B2 - Electro-optical device substrate, electro-optical device, and electronic apparatus - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a substrate for an electro-optical device, an electro-optical device, and an electronic apparatus. More specifically, when used in an electro-optical device, even when the spectral characteristics of illumination light in a transmissive display are non-uniform, image display with excellent white balance is suppressed by suppressing deterioration in color reproducibility due to this. In addition, the present invention relates to a substrate for an electro-optical device, an electro-optical device, and an electronic apparatus that can improve the color intensity of a transmissive display without reducing the brightness of the reflective display.
[0002]
[Prior art]
In recent years, electro-optical devices such as liquid crystal devices have been widely used in electronic devices such as cellular phones and portable personal computers. This liquid crystal device has various forms depending on the application.For example, when used in a dark place or when the brightness of the image display unit is particularly required, the light from the illumination device installed on the back of the liquid crystal device is used. A transmissive liquid crystal device that displays images by entering is used, and when the place of use is sufficiently bright, or when the brightness of the image display is not particularly required, natural light or outside light such as room lighting is used. A reflection type is used in which light is incident from the front of the image display unit and the light is reflected to perform display. Furthermore, so-called transflective liquid crystal devices capable of both transmissive and reflective display are also used.
[0003]
FIG. 17 is a schematic cross-sectional view schematically showing the structure of a conventional transflective liquid crystal device 100. The liquid crystal device 100 has a structure in which a substrate 101 and a substrate 102 are bonded together with a sealant 103 and a liquid crystal 104 is sealed between the substrate 101 and the substrate 102.
[0004]
A reflective layer 111 having an opening 111a and a reflective portion 111r is formed for each pixel on the inner surface of the substrate 101, and colored layers 112r, 112g, 112b and a surface protective layer 112p are provided on the reflective layer 111. A color filter 112 is formed. A transparent electrode 113 is formed on the surface of the surface protective layer 112 p of the color filter 112.
[0005]
On the other hand, a transparent electrode 121 is formed on the inner surface of the substrate 102 and is configured to intersect the transparent electrode 113 on the opposite substrate 101. Note that an alignment film, a hard transparent film, and the like are appropriately formed on the substrate 101 and the substrate 102 as necessary.
[0006]
In addition, a retardation plate (¼ wavelength plate) 105 and a polarizing plate 106 are sequentially arranged on the outer surface of the substrate 102, and a retardation plate (¼ wavelength plate) 107 and on the outer surface of the substrate 101. Polarizers 108 are sequentially arranged.
[0007]
When the liquid crystal device 100 configured as described above is installed in an electronic device such as a mobile phone or a portable personal computer, the liquid crystal device 100 is attached with the illumination device 109 disposed behind it. In this liquid crystal device 100, in a bright place such as in the daytime or indoors, external light passes through the liquid crystal 104 along the reflection path R, is then reflected by the reflecting portion 111r, and is again transmitted through the liquid crystal 104 and emitted. A reflective display is visible. On the other hand, when the lighting device 109 is turned on in a dark place such as at night or outdoors, light passing through the opening 111a out of the illumination light of the lighting device 109 is emitted through the liquid crystal device 100 along the transmission path T. Therefore, the transmissive display is visually recognized.
[0008]
[Problems to be solved by the invention]
The illuminating device of the liquid crystal device configured as described above uses an LED (Light Emitting Diode), a cold cathode tube, or the like as a light source, and the luminance (intensity) of the illuminating light emitted from such a light source is visible. Often it is not uniform over all wavelengths in the light region. When transmissive display is performed using light having a non-uniform luminance distribution as described above, the spectral characteristics of light emitted through the liquid crystal layer are also non-uniform. For example, when transmissive display is performed using an illumination device having a spectral characteristic higher than that at a wavelength at which other colors are developed, the image display becomes bluish. There was a problem that the white balance was lowered.
[0009]
In addition, in a transflective liquid crystal device, when used as a reflective type, external light incident from the front of the image display unit passes through the colored layer, then reflects off the reflective film and passes through the colored layer again. The passing distance of the layers is more than twice that of the transmissive display that passes through the colored layer only once, and the brightness of the displayed image is lowered. In order to obtain an image display with sufficient brightness when used as such a reflection type, it is necessary to reduce the thickness of the colored layer or reduce the pigment concentration. When used as a mold, an image display with sufficient color strength cannot be obtained. On the contrary, if the condition of the colored layer is set so as to obtain an image display with sufficient color density as a transmissive type by increasing the thickness of the colored layer or increasing the pigment concentration, sufficient brightness as a reflective type The image display cannot be obtained. Thus, obtaining an image display with sufficient brightness as a reflection type and obtaining an image display with a transmission type and sufficient color density are in a trade-off relationship, and it is extremely difficult to achieve both. There was also a problem that it was difficult.
[0010]
The present invention has been made in view of the above-described problems, and when used in an electro-optical device, even if the spectral characteristics of illumination light in a transmissive display are not uniform, color reproduction resulting therefrom is achieved. Electro-optics that can reduce image quality and achieve image display with excellent white balance, and can improve the color intensity of transmissive displays without reducing the brightness of reflective displays An object is to provide a substrate for an apparatus, an electro-optical device, and an electronic apparatus.
[0011]
[Means for Solving the Problems]
In order to achieve the above-described object, the electro-optical device substrate of the present invention is a substrate for an electro-optical device in which a display area includes a plurality of pixels, and each pixel includes a plurality of dots. An area, a reflection layer provided in the reflection area, a transmission area including at least one opening provided in the reflection layer, and a colored layer planarly overlapped with the reflection layer The colored layer provided on one dot covers the transmission region provided on the one dot in a plane, and is thicker than other regions in the region covering the transmission region,
The colors of the colored layers provided in the plurality of dots constituting the one pixel are different from each other,
The area of the transmissive region provided in at least one of the plurality of dots is different from the area of the transmissive region provided in other dots of the plurality of dots.
To do.
[0012]
In the electro-optical device according to the aspect of the invention, the display area includes a plurality of pixels, and each of the pixels includes a plurality of dots. The dots include a reflection area and a reflection area provided in the reflection area. A layer, a transmission region including at least one opening provided in the reflective layer, and a colored layer provided so as to overlap the reflective layer in a plane, and provided in one of the dots. The colored layer covers the transmissive region provided on the one dot in a plane and is thicker than the other regions in the region covering the transmissive region, and on the opposite side of the reflective layer from the colored layer. An illumination device that irradiates illumination light to the plurality of transmission regions, and the colors of the colored layers provided in the plurality of dots constituting the one pixel are different from each other, and at least one of the plurality of dots Two dogs The area of the transmissive area provided in is characterized different from the area of the transmissive area provided in the other dot of the plurality of dots.
[0013]
With this configuration, even when the spectral characteristics of illumination light in transmissive display are not uniform, it is possible to suppress deterioration in color reproducibility caused by this and display an image with excellent white balance. Can do. For example, in the case where the illumination light emitted from the illumination device has high spectral characteristics compared to the luminance at the wavelength at which other colors are developed, the transmissive display has a deep blue color. The white balance is also biased to blue, but by reducing the area of the transmissive area covered by the blue coloring layer and reducing the absolute amount of blue light, the image display is prevented from being biased to blue. An image display excellent in white balance can be realized. Further, the color density of the transmissive display can be improved without reducing the brightness of the reflective display.
[0014]
The electro-optical device according to the aspect of the invention includes a pair of substrates, a display region includes a plurality of pixels, and the one pixel includes a plurality of dots. A reflection layer provided in the reflection region; a transmission region formed of at least one or more openings provided in the reflection layer; and a colored layer superimposed in a plane on the reflection layer; The first dot provided with the first colored layer showing the peak value of transmittance at a wavelength of 400 nm to 500 nm, the second dot provided with the second colored layer showing the peak value of transmittance at a wavelength of 500 nm to 600 nm, and a wavelength of 600 nm The above has at least the third dot provided with the third colored layer showing the peak value of the transmittance, and the colored layer provided on one dot is a flat surface of the transmissive region provided on one dot. Covering and Thicker than other areas in the region covering the serial transmission region,
An illumination device that irradiates illumination light to the plurality of transmission regions is disposed on the opposite side of the reflective layer from the colored layer, and the area of the transmission region that each of the first to third dots has is the pixel. The white color on the CIE chromaticity diagram of the illumination light that has passed is adjusted so that x = 0.2 to 0.5 and y = 0.2 to 0.5.
[0015]
With this configuration, even when the spectral characteristics of illumination light in transmissive display are not uniform, it is possible to suppress deterioration in color reproducibility caused by this and display an image with excellent white balance. Can do. For example, a colored layer (for example, a blue colored layer) that exhibits a transmittance peak value at a wavelength of 400 nm to 500 nm, a colored layer (for example, a green colored layer) that exhibits a transmittance peak value at a wavelength of 500 nm to 600 nm, and a wavelength of 600 nm A beautiful full-color image display can be realized by using three colored layers such as a colored layer (for example, a red colored layer) exhibiting a peak transmittance value as described above. Furthermore, the spectral characteristics of the illumination light such that the color obtained by mixing the illumination light that has passed through each colored layer is x = 0.2 to 0.5 and y = 0.2 to 0.5 on the CIE chromaticity diagram. As described above, by adjusting the area of each transmissive region, it is possible to realize an image display excellent in color reproducibility and white balance. Further, the color density of the transmissive display can be improved without reducing the brightness of the reflective display.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the substrate for an electro-optical device, the electro-optical device, and the electronic apparatus according to the present invention will be specifically described with reference to the drawings taking the substrate for a liquid crystal device and the liquid crystal device as examples. Note that, in each drawing used in the description of the present embodiment, each layer or each member has a different scale so that each layer or each member can be recognized on the drawing.
[0017]
[First Embodiment]
FIG. 1 is a schematic perspective view showing an external structure of a liquid crystal device according to a first embodiment of the electro-optical device of the invention. As shown in FIG. 1, the liquid crystal device 200 is a so-called transflective passive matrix type liquid crystal device for a liquid crystal device having a transparent first substrate 211 made of a glass plate or a synthetic resin plate as a base. A substrate 210 and a counter substrate 220 having the second substrate 221 as a base are bonded to each other through a sealant 230 with a liquid crystal 232 as an electro-optical material interposed therebetween. An illumination device 270 is disposed on the back surface of the liquid crystal device substrate 210.
[0018]
A plurality of parallel striped transparent electrodes 216 are formed on the inner surface of the first substrate 211 (the surface facing the second substrate 221), and a plurality of parallel striped transparent electrodes 222 are formed on the inner surface of the second substrate 221. Is formed. The transparent electrode 216 is conductively connected to the wiring 218 </ b> A, and the transparent electrode 222 is conductively connected to the wiring 228. The transparent electrode 216 and the transparent electrode 222 are orthogonal to each other, and the intersecting region forms a large number of dots 280 arranged in a matrix. Usually, the three color dots 280 form one pixel, and this pixel arrangement is a liquid crystal display. Region A is configured.
[0019]
The first substrate 211 has a substrate overhanging portion 210T that projects outward from the outer shape of the second substrate 221, and the sealing material 230 is provided on the substrate overhanging portion 210T with respect to the wiring 218A and the wiring 228. A wiring 218B that is conductively connected via a vertical conduction portion constituted by a part of the wiring pattern and an input terminal portion 219 including a plurality of wiring patterns formed independently are formed. A semiconductor IC 261 with a built-in liquid crystal driving circuit and the like is mounted on the substrate overhanging portion 210T so as to be conductively connected to the wirings 218A and 218B and the input terminal portion 219. In addition, a flexible wiring board 263 is mounted on the end of the board extension part 210T so as to be conductively connected to the input terminal part 219.
[0020]
<Structure of substrate for liquid crystal device>
Next, the structure of the liquid crystal device substrate 210 in this embodiment will be specifically described with reference to FIG. 2A and 2B are explanatory views showing a part of the liquid crystal device 200 according to the first embodiment shown in FIG. 1, in which FIG. 2A is a sectional view, and FIG. 2B is a substrate for the liquid crystal device. It is a partially expanded view in a part. As shown in FIG. 2A, the surface of the first substrate 211 has a SiO 2 surface. ₂ And TiO ₂ A base layer 213 made of an inorganic material such as acrylic resin or an epoxy resin is formed, and an opening is formed in the base layer 213 in a region corresponding to a transmission region of a reflective layer 212 described later. Yes. Further, a reflective layer 212 made of a laminated film of aluminum, silver, or an alloy thereof, or aluminum, silver, or an alloy thereof, and titanium, titanium nitride, molybdenum, tantalum, or the like is formed on the base layer 213. ing. The reflection layer 212 is formed so as to have, for each dot, a transmission region for transmitting light from the illumination device 270 and a reflection region 212r for reflecting external light. In the present embodiment, the reflection region 212r corresponding to one dot is a region other than the opening (transmission region) 212a in the one dot region. On the surface of the liquid crystal device substrate 210, a concave portion 260 is formed in the light-transmitting region of the reflective layer 212 by the reflective layer 212 and the base layer 213.
[0021]
On the reflective layer 212, a colored layer 215 is formed so as to completely cover the recess 260 formed on the first substrate 211. In the present embodiment, the colored layer is composed of colored layers 215R, 215G, and 215B of three colors of R (red), G (green), and B (blue).
[0022]
In the present embodiment, each transmissive region is an opening 212a provided in the reflective layer 212, and a base layer 213 provided with a plurality of openings is disposed between the reflective layer 212 and the lighting device 270. Each opening of the base layer 213 overlaps the opening 212a of the reflective layer 212 in a planar manner, and each of the colored layers 215R, 215G, and 215B corresponds to each opening 212a of the reflective layer 212 and each opening of the base layer 213. Each is provided in an embedded state.
[0023]
With this configuration, the colored layers 215R, 215G, and 215B provided up to the inside of the opening of the base layer 213 are more colored than the reflective region 212r in the transmissive region (formation region of the opening 212a). In the case of transmissive display, the thickness of 215R, 215G, and 215B is increased, and even when the transmitted light passes through the colored layers 215R, 215G, and 215B only once, a dark image display can be realized. Here, the thickness of each colored layer 215R, 215G, 215B in the transmission region (formation region of the opening 212a) is determined when the respective liquid crystal side surfaces of the colored layers 215R, 215G, 215B are formed almost uniformly. Is preferably approximately twice the thickness of each of the colored layers 215R, 215G, and 215B that overlaps the reflective region 212r in a plane, that is, the other portions. More specifically, it is preferably in the range of 1.4 times to 2.6 times, and preferably in the range of 1.7 times to 2.3 times. In this way, the difference between the saturation of the reflective display and the saturation of the transmissive display can be further reduced, and the difference in color between the two displays can be further reduced.
[0024]
The colored layers 215R, 215G, and 215B are usually formed so as to exhibit a predetermined color tone by dispersing a coloring material such as a pigment or a dye in a transparent resin. Further, at the boundary portion between the regions where the colored layers 215R, 215G, and 215B are formed, the three colors R (red), G (green), and B (blue) are arranged so as to overlap each other, and the black light shielding film 215BM (black) Mask).
[0025]
As shown in FIG. 2B, the openings 212a of the reflective layer 212 are formed to have different sizes. The size of the opening 212a for each dot differs depending on the color of the colored layers 215R, 215G, and 215B disposed on the opening 212a. In the present embodiment, the size of the opening 212a is l, m, and n for each of the dots 280R, 280G, and 280B having colors of R (red), G (green), and B (blue), respectively. Yes. A method of determining the sizes l, m, and n of the opening 212a will be described together with the description of the structure of the lighting device described later.
[0026]
Furthermore, as shown in FIG. 2 (a), SiO 2 is formed on the colored layers 215R, 215G, and 215B. ₂ And TiO ₂ A surface protective layer 217 made of an inorganic material such as acrylic resin or an epoxy resin is formed, and a plurality of parallel striped ITO (Indium Tin Oxide) transparent on the surface protective layer 217 A transparent electrode 216 made of a conductor is formed, and an alignment film 233 made of polyimide resin or the like is formed on the transparent electrode 216. A retardation plate 240 and a polarizing plate 241 are disposed on the outer surface of the first substrate 211.
[0027]
<Structure of counter substrate>
On the other hand, the counter substrate 220 facing the liquid crystal device substrate 210 is formed by sequentially laminating a transparent electrode 222 made of a transparent conductor such as ITO and an alignment film 224 made of polyimide resin on a second substrate 221 made of glass or the like. ing. A retardation plate 250 and a polarizing plate 251 are disposed on the outer surface of the second substrate 221.
[0028]
<Structure of lighting device>
Next, the structure of the illumination device 270 will be described. The lighting device 270 disposed on the back surface of the first substrate 211 includes a plurality of LEDs 271 (only one is shown in FIG. 2A) and a light guide plate 272. LED271 is arrange | positioned so that the side surface side of the light-guide plate 272 may be opposed, and it irradiates light with respect to this side end surface. The light guide plate 272 is a plate-like member for uniformly guiding the light from the LEDs 271 incident on the side end surface to the substrate surface of the liquid crystal device 200 (the surface of the first substrate 211).
[0029]
Here, with reference to FIG. 3, spectral characteristics (relationship between the wavelength of illumination light and luminance) of illumination light emitted from the illumination device 270 used in the present embodiment to the liquid crystal device substrate 210 will be described. explain. FIG. 3 is a graph showing the relationship between the wavelength of illumination light and the brightness, where the horizontal axis represents the wavelength, the vertical axis represents the brightness of the illumination light at each wavelength, and the predetermined brightness is a reference value (1.00). It shows as a relative value. As shown in FIG. 3, in the present embodiment, it is assumed that the illumination light has a variation in luminance over the entire wavelength range in the visible light region, that is, the spectral characteristics of the illumination light are not uniform. Yes. Specifically, the illumination light in the present embodiment has the maximum luminance at a wavelength in the vicinity of 470 nm corresponding to blue light to green light, while the luminance at a wavelength of about 520 nm or more corresponding to yellow light to red light is , Smaller than this.
[0030]
When transmissive display is performed using such illumination light with non-uniform spectral characteristics, color development occurs at a wavelength with a large relative value of luminance, so the image display is originally bluish. However, as shown in FIG. 2B, in the present embodiment, the area of each opening 212a (area l corresponding to the red colored layer 215R, area m corresponding to the green colored layer 215G) The areas n) corresponding to the blue colored layers 215B are different, and the area of each opening 212a is an area corresponding to the spectral characteristics of the illumination light. In the present embodiment, by setting the area of each opening 212a to satisfy l>n> m, the absolute amount of blue and green light in the transmissive display is reduced, and the white balance is excellent. Image display can be realized.
[0031]
As a method of setting the sizes l, m, and n of the opening 212a, for example, the white color expressed when the illumination light that has passed through the colored layers 215R, 215G, and 215B is mixed is shown in FIG. (1931xy) It can be mentioned that white is expressed in the range of x = 0.2 to 0.5 and y = 0.2 to 0.5 on the chromaticity diagram. In FIG. 4, x and y are called chromaticity coordinates and represent color quality composed of hue and saturation. As shown in FIG. 4, in the CIE chromaticity diagram, a horseshoe-shaped range representing the NTSC image three primary colors is shown, the center is a portion showing white, and red toward R, G, B at each vertex. The green and blue colors change so as to be primary colors, and the outer peripheral portion represents the color of a monochromatic spectrum. Thus, by determining the x and y color coordinates of the CIE chromaticity diagram, the color can be uniquely determined, and excellent color reproducibility and white balance can be realized.
[0032]
In such an electro-optical device, when the white point is located in a region of X <0.2, X> 0.5, Y <0.2, Y> 0.5 on the CIE chromaticity diagram. In the case of white, when white becomes tinted white and all three primary colors are emitted to display white, for example, the color becomes yellowish white. Accordingly, the color reproducibility of display is greatly impaired.
[0033]
On the CIE chromaticity diagram, the white point (X, Y) is (X−0.31). ² + (Y-0.31) ² ≤ (0.10) ² If the above relationship is satisfied, further excellent color reproducibility and white balance can be realized.
[0034]
In addition to unevenness caused by illumination light, it is possible to balance colors that are difficult to express with a color material. For example, since a color material such as blue becomes pale by heat, the spectral characteristics of transmitted light in a transmissive display become non-uniform. In other words, it is possible to suppress a decrease in color reproducibility due to non-uniformity in the spectral characteristics of transmitted light in transmissive display caused by a color material, and to realize an image display excellent in white balance.
[0035]
In FIG. 5, the horizontal axis represents the wavelength of incident light incident on each of the colored layers 215R, 215G, and 215B, and the vertical axis represents transmittance (ratio of the amount of emitted light with respect to the amount of incident light) of each of the colored layers 215R, 215G, and 215B. It is a graph which shows the transmittance | permeability characteristic. As shown in FIG. 5, the colored layer 215R exhibits high transmittance for light having a wavelength of 600 nm or more corresponding to red, and the colored layer 215G exhibits high transmittance for light having a wavelength of 500 nm to 600 nm corresponding to green. The colored layer 215B exhibits high transmittance with respect to light having a wavelength of 400 nm to 500 nm corresponding to blue.
[0036]
Next, with reference to FIG. 6, the aspect of the opening part 212a formed in the reflection layer 212 is demonstrated more concretely. FIG. 6 is a plan view showing the positional relationship between each element formed on the first substrate and the transparent electrode formed on the second substrate. On the reflective layer 212, colored layers 215R, 215G, and 215B are arranged in a stripe pattern, and transparent electrodes 216 and 222 are formed in a stripe pattern in the vertical and horizontal directions. The transparent electrode 216 and the transparent electrode 222 are orthogonal to each other, and the intersecting region forms a large number of dots 280 arranged in a matrix. In FIG. 6, the dots on which the colored layers 215R, 215G, and 215B of the respective colors are disposed are 280R, 280G, and 280B.
[0037]
In the case where the colored layers 215R, 215G, and 215B having the transmittance characteristics as shown in FIG. 5 are used using the illumination light having the spectral characteristics as shown in FIG. 3, the luminance is the highest among the illumination lights. The opening 212a of the dot 280R in which the R (red) colored layer 215R corresponding to the low wavelength is arranged is formed to be the largest, and the G (green) colored layer 215G corresponding to the wavelength having the highest luminance is arranged. The opening 212a of the dot 280B is formed to be the smallest. The area of the opening 212a is unified for each dot 280R, 280G, 280B formed on the reflective layer 212, and the area ratio of the opening 212a corresponding to each dot 280R, 280G, 280B is expressed as “dot 280R: The case where “dot 280G: dot 280B = 4: 1: 2” is illustrated.
[0038]
Here, FIG. 7 is a graph showing the spectral characteristics of light emitted from the liquid crystal device (hereinafter referred to as “observation light”) when transmissive display is performed with the configuration described above. On the other hand, FIG. 8 shows the spectral characteristics of the observation light when transmissive display is performed in a configuration in which all the openings have the same area (hereinafter referred to as “conventional configuration”) in comparison with FIG. ing. In any of the figures, the spectral characteristics when transmissive display is performed using the illumination light having the spectral characteristics shown in FIG. 3 are shown. 7 and 8, the horizontal axis indicates the wavelength, and the vertical axis indicates the luminance of the observation light based on a predetermined luminance (the same luminance in both FIGS. 7 and 8). The relative value is (1.00).
[0039]
As shown in FIG. 8, when the conventional configuration is adopted, the observation light visually recognized by the observer becomes light with extremely high luminance near the wavelength of 470 nm. Therefore, the image display recognized by the observer is bluish green. On the other hand, when the configuration in which the ratio of the transmission regions in the dots 280R, 280G, and 280B is 4: 1: 2 is adopted, the luminance near the wavelength of 470 nm is compared with that in FIG. 8 as shown in FIG. And it is low. Therefore, even when transmissive display is performed using illumination light whose luminance from blue light to green light is stronger than the luminance at other wavelengths, the image visually recognized by the observer becomes bluish green. The situation can be avoided.
[0040]
As described above, according to the present embodiment, light having a wavelength with a relatively low luminance among the illumination light is sufficiently transmitted through the reflective layer, while light having a wavelength with a relatively high luminance is transmitted through the reflective layer. By limiting the transmission, even when the spectral characteristics of the illumination light are non-uniform, it is possible to suppress a decrease in color reproducibility caused by this and realize an image display with excellent white balance.
[0041]
In addition, in the conventional liquid crystal device, the transmissive display in which the illumination light passes only once through the colored layer is lighter than the reflective display in which the external light passes through the colored layer twice before displaying the image. However, as in this embodiment, by forming a base layer on the substrate and embedding a colored layer in the concave portion formed in the transmissive region, the color through which illumination light that realizes transmissive display passes is provided. By increasing the thickness of the layer, the color density of the transmissive display can be improved without reducing the brightness of the reflective display.
[0042]
[Second Embodiment]
Next, a liquid crystal device according to a second embodiment of the present invention will be described with reference to FIG. FIG. 9 is a cross-sectional view showing the configuration of the liquid crystal device 300. Elements common to the elements shown in FIG. 2 are denoted by the same reference numerals as those in FIG.
[0043]
As shown in FIG. 9, the surface of the first substrate 311 is made of aluminum, silver or an alloy thereof, or a laminated film of aluminum, silver or an alloy thereof, titanium, titanium nitride, molybdenum, tantalum, or the like. A reflective layer 312 is formed. The reflection layer 312 is formed so as to have, for each dot, a transmission region for transmitting light from the illumination device 270 and a reflection region 312r for reflecting external light. In this embodiment mode, the transmissive region is formed as the opening 312a by a photolithography technique, an etching method, or the like. Similar to the first embodiment, the opening 312a is formed to have a different size according to the spectral characteristics of the illumination light.
[0044]
On the reflective layer 312, SiO ₂ And TiO ₂ A surface protective layer 317 made of an inorganic material such as an acrylic resin or an epoxy resin is formed. A transparent conductor made of a transparent conductor such as a stripe-like ITO arranged in parallel on the surface protective layer 317 is formed. An electrode 316 is formed, and an alignment film 333 made of polyimide resin or the like is formed on the transparent electrode 316. A retardation plate 340 and a polarizing plate 341 are disposed on the outer surface of the first substrate 311.
[0045]
On the other hand, the counter substrate 320 facing the liquid crystal device substrate 310 is formed in a region corresponding to the reflective region 312r of the reflective layer 312 on the second substrate 321 in an SiO 2 region. ₂ And TiO ₂ A base layer 313 made of an inorganic material such as an organic resin such as an acrylic resin or an epoxy resin is formed. Accordingly, a recess 360 is formed in the second substrate 321 in a region corresponding to the opening 312a of the reflective layer 312.
[0046]
On the base layer 313, R (red), G (green), and B (blue) colored layers 315R, 315G, and 315B are formed so as to completely cover the recesses 360 formed on the second substrate 321. Has been. Since the colored layers 315R, 315G, and 315B are formed so as to be embedded in the recesses 360 formed on the second substrate 321, the colored layers 315R, 315G, and 315B are formed in the transmission region (the formation region of the opening 312a) from the reflection region 312r. Also, the thickness of the colored layers 315R, 315G, and 315B is increased. As a result, in the case of transmissive display, even if the transmitted light passes through the colored layers 315R, 315G, and 315B only once, an image with a deep color can be displayed. Here, the thickness of each colored layer 315R, 315G, 315B in the transmission region (formation region of the opening 312a) is determined when the respective liquid crystal side surfaces of the colored layers 315R, 315G, 315B are formed substantially uniformly. Is preferably approximately twice the thickness of the portion of the colored layers 315R, 315G, and 315B that overlaps the reflective region 312r in a plane, that is, the other portions. More specifically, it is preferably in the range of 1.4 times to 2.6 times, and preferably in the range of 1.7 times to 2.3 times. In this way, the difference between the saturation of the reflective display and the saturation of the transmissive display can be further reduced, and the difference in color between the two displays can be further reduced.
[0047]
The colored layers 315R, 315G, and 315B are usually formed so as to exhibit a predetermined color tone by dispersing a coloring material such as a pigment or a dye in a transparent resin. Further, at the boundary portion of the region where the colored layers 315R, 315G, and 315B are formed, the three colors R (red), G (green), and B (blue) are arranged to overlap each other, and the black light-shielding film 315BM (black) Mask).
[0048]
On the colored layers 315R, 315G, 315B, SiO ₂ And TiO ₂ A surface protective layer 323 made of an inorganic material such as an acrylic resin or an epoxy resin, a transparent electrode 322 made of a transparent conductor such as ITO, and an alignment film 324 made of a polyimide resin are sequentially laminated. . A retardation plate 350 and a polarizing plate 351 are disposed on the outer surface of the second substrate 321.
[0049]
When the liquid crystal device substrate 310 and the counter substrate 320 configured as described above are arranged with the liquid crystal 332 sandwiched therebetween, the spectral characteristics of the illumination light are not uniform as in the first embodiment. In this case, it is possible to suppress the deterioration of color reproducibility caused by this, realize an image display with excellent white balance, and improve the color density of the transmissive display without reducing the brightness of the reflective display. be able to.
[0050]
[Third Embodiment]
Next, a third embodiment in which the present invention is applied to an active matrix transflective liquid crystal device will be described. In the following, a case where a TFD (Thin Film Diode) which is a two-terminal switching element is used as the switching element will be exemplified. In addition, among the elements in the drawings shown below, the elements common to the elements shown in FIG. 2 are denoted by the same reference numerals as those in FIG.
[0051]
First, FIG. 10 is a cross-sectional view showing the structure of the liquid crystal device 400 of the present embodiment, and FIG. FIG. 10 corresponds to a cross-sectional view taken along line AA ′ of FIG. As shown in these drawings, on the inner surface of the second substrate 421, a plurality of pixel electrodes 413 arranged in a matrix and a gap between the pixel electrodes 413 extend in a predetermined direction (a direction perpendicular to the paper surface in FIG. 10). A plurality of existing data lines 414 are formed. Each pixel electrode 413 is formed of a transparent conductive material such as ITO, for example. Further, each pixel electrode 413 and the data line 414 adjacent to each pixel electrode 413 are electrically connected via a TFD 415. Each TFD 415 is a two-terminal switching element having non-linear current-voltage characteristics.
[0052]
On the other hand, on the inner side of the first substrate 211, similar to the liquid crystal device of the first embodiment, the base layer 213, the reflective layer 212 having a plurality of openings 212a, and the colored layers 215R, 215G, and 215B. The black light shielding film 215BM and the surface protective layer 217 are formed, and a plurality of scanning lines 427 extending in a direction intersecting with the data lines 414 are formed on the surface of the surface protective layer 217. . As shown in FIGS. 10 and 11, each scanning line 427 is a strip-shaped electrode formed of a transparent conductive material. Here, FIG. 12 shows a positional relationship between each scanning line 427 and each element (shown by a one-dot chain line) formed on the first substrate 211 (see FIG. 10). Each scanning line 427 is opposed to a plurality of pixel electrodes 413 arranged in a row on the second substrate 421 (see FIG. 10). The liquid crystal device having such a structure is configured by the second substrate 421 (FIG. 10). Reference) When a voltage is applied between the upper pixel electrode 413 and the scanning line 427 on the first substrate 211 (see FIG. 10), the alignment state of the liquid crystal 232 sandwiched between the two electrodes changes. That is, in this embodiment, the region where each pixel electrode 413 and each scanning line 427 face each other is a dot 280 (more specifically, dots 280R, 280G, 280B corresponding to each of the colored layers 215R, 215G, 215B). It is equivalent to.
[0053]
Similar to the first embodiment, also in this embodiment, an opening 212a is formed in the reflective layer 212 at a position corresponding to the vicinity of the center of each dot 280. The area of each opening 212a is determined so that the ratio of the transmissive region in each of the dots 280R, 280G, and 280B is a ratio corresponding to the spectral characteristics of the illumination light from the illumination device. Here, also in this embodiment, it is assumed that transmissive display is performed using illumination light having the spectral characteristics shown in FIG. Therefore, in the dot 280G formed in the green colored layer 215G corresponding to the wavelength having the highest luminance among the illumination light, the area of the opening 212a corresponding to this is the dots 280R and 280B corresponding to other colors. It is smaller than the area corresponding to. That is, the ratio of the transmissive area to the dots 280G is smaller than the ratio of the transmissive areas to the other color dots 280R and 280B. On the other hand, for the dot 280R corresponding to the wavelength with the lowest luminance among the illumination light, the area of the opening 212a is large, and the ratio of the transmission region occupied by the dot 280R is compared with the dots 280G and 280B of other colors. Is getting bigger. In the example shown in FIG. 12, the area ratio of the opening 212a to each of the dots 280R, 280G, and 280B is “4: 1: 2”.
[0054]
In addition, since the colored layers 215R, 215G, and 215B are embedded and formed in the recesses formed in the opening 212a of the reflective layer 212, the colored layers 215R, 215G, and 215B in the transmissive region used for the transmissive display are formed. It is comprised so that thickness may become thick. By configuring in this way, the same effects as those of the first embodiment can be obtained. Here, the thickness of each colored layer 215R, 215G, 215B in the transmission region (formation region of the opening 212a) is determined when the respective liquid crystal side surfaces of the colored layers 215R, 215G, 215B are formed almost uniformly. Is preferably approximately twice the thickness of each of the colored layers 215R, 215G, and 215B that overlaps the reflective region 212r in a plane, that is, the other portions. More specifically, it is preferably in the range of 1.4 times to 2.6 times, and preferably in the range of 1.7 times to 2.3 times. In this way, the difference between the saturation of the reflective display and the saturation of the transmissive display can be further reduced, and the difference in color between the two displays can be further reduced.
[0055]
<Modification>
Although the embodiments of the present invention have been described above, the above embodiments are merely examples, and various modifications can be made to the above embodiments without departing from the spirit of the present invention. As a modification, the following can be mentioned, for example.
[0056]
(1) In each of the above embodiments, the areas of the openings 212a corresponding to the dots 280 are made different according to the spectral characteristics of the illumination light from the illumination device. Good. FIG. 13 is a plan view showing the positional relationship between each element formed on the first substrate and the transparent electrode 222 formed on the second substrate in the liquid crystal device which is a modification of the present invention. As shown in FIG. 13, while making the size of each opening 212a provided in the reflective layer 212 substantially the same, the number (opening area) of the openings 212a provided corresponding to each dot 280 is determined by the illumination light. According to spectral characteristics.
[0057]
For example, in each of the above embodiments, the area ratio of the opening 212a corresponding to the dots 280R, 280G, and 280B is set to “4: 1: 2” in accordance with the spectral characteristics of the illumination light illustrated in FIG. In this modification, as shown in FIG. 13, the number of openings 212a corresponding to the dots 280R, 280G, 280B is “4: 1: 2”. Even in the case of such a configuration, the same effects as those of the above-described embodiments can be obtained. Further, when the opening 212a is formed only in a part of each dot 280 as in each of the above embodiments, the position of each opening 212a is biased in each dot 280. As a result, an image that is visually recognized by an observer Although the display may feel rough, according to the configuration shown in this modification, the openings 212a can be scattered in each dot 280, so that such a problem can be avoided.
[0058]
In each of the above embodiments, the opening 212a is formed in the vicinity of the center of each dot 280. However, the opening 212a can be formed anywhere in the reflective layer 212, and the opening 212a can be formed. You may form in the peripheral part of the reflection layer 212. FIG.
[0059]
In the above description, the case where the opening 212a is used as the light-transmitting region of the reflective layer 212 has been described. However, the term “light-transmitting region” means “illumination light from the illumination device in the reflective layer”. Means a portion through which light is transmitted, and is not limited to the opening 212a.
[0060]
(2) In the description so far, the ratio of the transmission region is made different for each dot in which the colored layer of different color is arranged, and the ratio of the transmission region in the dot in which the colored layer of the same color is arranged Were the same. If the spectral characteristics of the illumination light from the illumination device are the same over the entire surface of the substrate of the liquid crystal device, such a configuration can sufficiently compensate for the non-uniformity of the spectral characteristics of the illumination light. The spectral characteristics of the illumination light may be different at each location in the substrate surface. For example, the illumination light having the spectral characteristic shown in FIG. 3 is irradiated to a certain part in the substrate surface, but the illumination light having a spectral characteristic different from that shown in FIG. 3 is irradiated to the other part. This is the case.
[0061]
In such a case, the ratio of the transmissive region may be varied depending on the position of each dot in the substrate surface. For example, in a dot located at a position irradiated with illumination light having the spectral characteristics shown in FIG. 3, the area ratio of the transmission region is set to “4: 1: 2”, while the blue color is compared with this illumination light. For a dot located at a location irradiated with illumination light having a slightly low luminance from light to green light, the area ratio of the transmission region is set to “3: 1: 2”. Thus, the ratio of the translucent area | region in the dot corresponding to the same color does not necessarily need to be the same over all the dots. By configuring in this way, in addition to the effects shown in the above embodiments, it is possible to compensate for the case where the spectral characteristics of the illumination light are not uniform even within the substrate surface. Contrast can be improved.
[0062]
(3) In the description so far, the case where the illumination light from the illumination device exhibits the spectral characteristics shown in FIG. 3 is exemplified, but when the illumination light having the spectral characteristics different from that in FIG. However, by making the light-transmitting region of the reflective layer have an area corresponding to the spectral characteristics of the illumination light, it is possible to compensate for variations in the spectral characteristics and improve the contrast.
[0063]
(4) In the description so far, the case of the stripe arrangement in which the colored layers are arranged in a stripe shape as the arrangement pattern of the colored layers is exemplified, but the present invention is not limited to this, and for example, a delta arrangement, a mosaic arrangement, etc. The pattern may be
[0064]
(5) In the third embodiment, an active matrix type liquid crystal device adopting TFD as a switching element has been exemplified, but the scope of application of the present invention is not limited to this, and a TFT (Thin Film Transistor) is used. The present invention can also be applied to a liquid crystal device employing a three-terminal switching element represented by When a TFT is used, a counter electrode is formed over the entire surface of one substrate, and a plurality of scanning lines and a plurality of data lines are formed on the other substrate so as to extend in directions crossing each other. At the same time, pixel electrodes connected to both of these via TFTs are arranged in a matrix. In this case, a region where each pixel electrode and the counter electrode face each other functions as a pixel.
[0065]
(6) In the above description, the liquid crystal device has been described as an example of the electro-optical device. Good.
[0066]
[Embodiment of electronic device]
Next, an embodiment in which the liquid crystal device described so far is used as a display device of an electronic device will be described. FIG. 14 is a schematic configuration diagram showing the overall configuration of the electronic apparatus of the present invention. The electronic apparatus shown here includes a liquid crystal device 200 similar to the above, and a control unit 1200 that controls the liquid crystal device 200. Here, the liquid crystal device 200 is conceptually divided into a panel structure 200A and a drive circuit 200B composed of a semiconductor IC or the like. The control unit 1200 includes a display information output source 1210, a display processing circuit 1220, a power supply circuit 1230, and a timing generator 1240.
[0067]
The display information output source 1210 includes a memory such as a ROM (Read Only Memory) or a RAM (Random Access Memory), a storage unit such as a magnetic recording disk or an optical recording disk, and a tuning circuit that tunes and outputs digital image signals. The display information is supplied to the display information processing circuit 1220 in the form of a predetermined format image signal or the like based on various clock signals generated by the timing generator 1240.
[0068]
The display information processing circuit 1220 includes various known circuits such as a serial-parallel conversion circuit, an amplification / inversion circuit, a rotation circuit, a gamma correction circuit, and a clamp circuit, and executes processing of input display information to obtain image information. Are supplied to the drive circuit 200B together with the clock signal CLK. The drive circuit 200B includes a scanning line drive circuit, a data line drive circuit, and an inspection circuit. The power supply circuit 1230 supplies a predetermined voltage to each of the above-described components.
[0069]
FIG. 15 shows a mobile personal computer which is an embodiment of the electronic apparatus of the present invention. The personal computer 80 shown here has a main body 82 provided with a keyboard 81 and a liquid crystal display unit 83. The liquid crystal display unit 83 includes the liquid crystal device 200 described above.
[0070]
FIG. 16 shows a mobile phone which is another embodiment of the electronic apparatus of the invention. A cellular phone 90 shown here includes a plurality of operation buttons 91 and a display unit including the liquid crystal device 200 described above.
[0071]
As described above, the electronic apparatus according to the present invention includes the above-described electro-optical device, for example, a liquid crystal device, so that even if the spectral characteristic of the illumination light in the transmissive display is not uniform, It is possible to suppress the deterioration of color reproducibility, achieve an image display with excellent white balance, and improve the color density of the transmissive display without reducing the brightness of the reflective display. .
[0072]
Note that the electronic apparatus of the present invention is not limited to the illustrated examples described above, and it is needless to say that various modifications can be made without departing from the scope of the present invention. For example, the above embodiment has a so-called COG type structure, but is not a structure for directly mounting an IC chip, for example, a structure in which a flexible wiring board or a TAB board is connected to a liquid crystal panel. It does not matter.
[0073]
【The invention's effect】
As described above, according to the present invention, even when the spectral characteristics of the illumination light used in the transmissive display are not uniform, the deterioration of color reproducibility due to this is suppressed, and an image display with excellent white balance can be achieved. In addition, the color density of the transmissive display can be improved without reducing the brightness of the reflective display.
[Brief description of the drawings]
FIG. 1 is a schematic perspective view showing an external structure of a liquid crystal device according to a first embodiment of the present invention.
FIGS. 2A and 2B are explanatory views showing a part of the liquid crystal device according to the first embodiment shown in FIG. 1, in which FIG. 2A is a sectional view and FIG. 2B is a liquid crystal device substrate portion; FIG.
FIG. 3 is a graph illustrating spectral characteristics of illumination light emitted from the illumination device in the liquid crystal device according to the first embodiment of the present invention.
FIG. 4 is a graph showing a CIE (1931xy) chromaticity diagram.
FIG. 5 is a graph showing the transmittance characteristics of each colored layer when the horizontal axis is the wavelength of incident light incident on each colored layer and the vertical axis is the transmittance (ratio of the amount of emitted light to the amount of incident light). .
FIG. 6 is a plan view showing a positional relationship between each element formed on the first substrate and a transparent electrode formed on the second substrate in the liquid crystal device according to the first embodiment of the present invention. .
FIG. 7 is a graph showing spectral characteristics of light emitted from the liquid crystal device according to the first embodiment of the invention.
FIG. 8 is a graph showing the spectral characteristics of light when transmissive display is performed with a configuration in which all openings of the reflective layer have the same area.
FIG. 9 is a cross-sectional view showing a configuration of a liquid crystal device according to a second embodiment of the present invention.
FIG. 10 is a cross-sectional view showing a configuration of a liquid crystal device according to a third embodiment of the present invention.
FIG. 11 is a perspective view showing a main part configuration of a liquid crystal display panel constituting a liquid crystal device according to a third embodiment of the present invention.
FIG. 12 is a plan view showing a positional relationship between each element formed on the first substrate and each data line formed on the second substrate in the liquid crystal device according to the third embodiment of the present invention. is there.
FIG. 13 is a plan view showing a positional relationship between each element formed on the first substrate and a transparent electrode formed on the second substrate in a liquid crystal device which is a modification of the present invention.
FIG. 14 is a schematic configuration diagram showing an overall configuration of an electronic apparatus according to the invention.
FIG. 15 is an explanatory diagram showing a mobile personal computer which is an embodiment of an electronic apparatus of the invention.
FIG. 16 is an explanatory diagram showing a mobile phone which is another embodiment of the electronic apparatus of the invention.
FIG. 17 is a schematic cross-sectional view schematically showing the structure of a conventional transflective liquid crystal device.
[Explanation of symbols]
80 ... Personal computer
81 ... Keyboard
82 ... Body part
83 ... Liquid crystal display unit
90 ... mobile phone
91 ... Operation buttons
200 ... Liquid crystal device
200A ... Panel structure
200B ... Drive circuit
210 ... Substrate for liquid crystal device
210T ... board extension
211 ... 1st board
212 ... Reflective layer
212a ... opening
212r ... reflection area
213: Underlayer
215, 215R, 215G, 215B ... colored layer
215BM: Black light shielding film
216 ... Transparent electrode
317 ... Surface protective layer
218, 218A, 218B ... wiring
219 ... Input terminal section
220 ... Counter substrate
221 ... Second substrate
222: Transparent electrode
224 ... Alignment film
228 ... wiring
230 ... Sealing material
233 ... Alignment film
240, 250 ... retardation plate
241,251 ... Polarizing plate
261 ... Semiconductor IC
263 ... Flexible wiring board
270 ... Illumination device
271 ... LED
272 ... Light guide plate
280, 280R, 280G, 280B ... dots
300 ... Liquid crystal device
311 ... first substrate
312 ... Reflective layer
312a ... opening
312r: reflection region
313: Underlayer
315R, 315G, 315B ... colored layer
315BM: Black light shielding film
316 ... Transparent electrode
317 ... Surface protective layer
320 ... Counter substrate
321 ... Second substrate
322 ... Transparent electrode
324 ... Alignment film
333: Alignment film
340, 350 ... retardation plate
341, 351 ... Polarizing plate
380, 380R, 380G, 380B ... dots
400 ... Liquid crystal device
413 ... Pixel electrode
414 ... Data line
415 ... TFD
420 ... Counter substrate
421 ... second substrate
427 ... Scanning line
1200 ... Control means
1210 ... Display information output source
1220 ... Display processing circuit
1230 ... Power supply circuit
1240: Timing generator
A ... Liquid crystal display area

Claims (10)

In the electro-optic device substrate, the display area is composed of a plurality of pixels, and the pixel is composed of a plurality of dots .
The dots are a reflective region, a reflective layer provided in the reflective region, a transmissive region comprising at least one or more openings provided in the reflective layer, and a color superimposed on the reflective layer in a planar manner. A layer, and
The colored layer provided on one dot covers the transmission region provided on the one dot in a plane, and is thicker than other regions in the region covering the transmission region,
The colors of the colored layers provided in the plurality of dots constituting the one pixel are different from each other,
For the electro-optical device , the area of the transmissive region provided in at least one of the plurality of dots is different from the area of the transmissive region provided in other dots of the plurality of dots . substrate. In an electro-optical device in which a display area includes a plurality of pixels and one pixel includes a plurality of dots ,
The dots are provided so as to planarly overlap the reflective layer, a reflective layer provided in the reflective region, a transmissive region including at least one opening provided in the reflective layer , and the reflective layer. A colored layer,
The colored layer provided on one dot covers the transmission region provided on the one dot in a plane, and is thicker than other regions in the region covering the transmission region,
On the opposite side of the reflective layer from the colored layer, an illumination device that irradiates illumination light to the plurality of transmission regions is disposed,
The colors of the colored layers provided in the plurality of dots constituting the one pixel are different from each other,
An electro-optical device , wherein an area of the transmissive region provided in at least one of the plurality of dots is different from an area of a transmissive region provided in another dot of the plurality of dots . The electro-optical device according to claim 2.
The transmissive region is an opening provided in the reflective layer,
Between the reflective layer and the illumination device, an underlayer provided with at least one opening is disposed,
The opening of the underlying layer overlaps the the opening and the flat surface manner of the reflective layer,
The colored layer provided on one of the dots, that is kicked set in a state of being buried in the opening portion of the opening and the underlying layer of the reflective layer provided on the one dot An electro-optical device. The electro-optical device according to claim 2.
The area of the transmissive region of each of the plurality of dots constituting the one pixel is such that white on the CIE chromaticity diagram of the illumination light that has passed through the pixel is x = 0.2 to 0.5, y = 0 An electro-optical device that is adjusted to be 2 to 0.5. The electro-optical device according to claim 2.
The plurality of dots constituting the one pixel have at least a first dot and a second dot,
The intensity of the illumination light in the wavelength region corresponding to the colored layer provided in the first dot is stronger than the intensity of the illumination light in the wavelength region corresponding to the colored layer provided in the second dot, An electro-optical device, wherein an area of a transmissive region included in the first dot is smaller than an area of a transmissive region included in the second dot . The electro-optical device according to any one of claims 2 to 5,
  An electro-optical device, wherein an area of a transmissive region included in the dot is adjusted by a number of the at least one transmissive region provided in the dot. Have a pair of substrates, the display area comprises a plurality of pixels, in the electro-optical device in which one pixel is composed of a plurality of dots,
The dots are a reflective region, a reflective layer provided in the reflective region, a transmissive region comprising at least one or more openings provided in the reflective layer, and a color superimposed on the reflective layer in a planar manner. A layer, and
The pixel has a first dot provided with a first colored layer showing a peak value of transmittance at a wavelength of 400 nm to 500 nm, and a second dot provided with a second colored layer showing a peak value of transmittance at a wavelength of 500 nm to 600 nm. And at least a third dot provided with a third colored layer showing a peak value of transmittance at a wavelength of 600 nm or more,
The colored layer provided in one dot covers the transmission region provided in one dot in a plane and is thicker than the other regions in the region covering the transmission region,
On the opposite side of the reflective layer from the colored layer, an illumination device that irradiates illumination light to the plurality of transmission regions is disposed,
The area of the transmissive region of each of the first to third dots is such that white on the CIE chromaticity diagram of the illumination light that has passed through the pixel is x = 0.2 to 0.5, y = 0.2 to An electro-optical device that is adjusted to be 0.5. The electro-optical device according to claim 7 .
Area of the transmissive region and the first dot to the third dot each having the coordinates of the white point of the transmitted CIE chromaticity diagram of the illumination light the pixel (X, Y) is taken as,
(X−0.31) ² + (Y−0.31) ² ≦ (0.10) ²
The electro-optical device is adjusted so as to satisfy the above relationship. The electro-optical device according to claim 7 or 8,
  An electro-optical device, wherein an area of a transmissive region included in the dot is adjusted by a number of the at least one transmissive region provided in the dot. An electronic apparatus characterized in that it comprises an electro-optical device according to any one of claims 2-9.

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