JP2008122473A - Electro-optical device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve an aperture ratio and to make high display quality and low power consumption compatible with each other in an electro-optical device. <P>SOLUTION: Each pixel 200 comprises a plurality of sub-pixels 20, and at least one of the plurality of sub-pixels 20 is formed in a reflection region 204, and at least another one of the plurality of them is formed in a transmission region 204. Furthermore, driving elements 22 to respectively drive the plurality of sub-pixels 20 are formed in the reflection region 204. With respect to the sub-pixels 20, for example in the case they are assigned to R, G, B, and W colors respectively, reflective display is ensured while dramatically increasing the aperture ratio of a color transmissive display region, for example, by assigning the reflection region 204 to a sub-pixel 20w of the color W, and consequently the power consumption is reduced. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an electro-optical device using an electro-optical element such as a liquid crystal.

  As an electro-optical device, a liquid crystal display device (hereinafter referred to as an LCD) is known. The LCD has a thin shape because liquid crystal is sealed between a pair of substrates, and the orientation of the liquid crystal is controlled for each pixel. It is characterized by low power consumption and is currently used as a monitor for computer monitors and portable information devices. In particular, as shown in the equivalent circuit of FIG. 6, a so-called active matrix LCD including a switching element SW and a storage capacitor Cs for controlling each pixel in each pixel is capable of high-definition and high-quality display. Adoption to display devices is progressing.

  In addition, it is well known that LCDs that perform color display are configured by using R (red), G (green), and B (blue) color filters to form one pixel with three primary color sub-pixels. In order to improve display luminance by improving color efficiency and further reduce power consumption, W (white) is added as shown in FIG. 7, and one pixel is formed with four colors of R, G, B, and W. Has been proposed (Patent Document 1).

  Since the W sub-pixel 400w can omit the color filter, there is no light loss (absorption) by the color filter, and white components that are often used in natural images and the like are not used in the R, G, and B sub-pixels. Therefore, by adopting the four colors R, G, B, and W, power consumption can be reduced and display luminance can be improved.

JP 2004-102292 A

  By adopting the four colors R, G, B, and W, power consumption can be reduced and display luminance can be improved. However, the increase in the number of subpixels constituting one pixel decreases the area per subpixel if the panel area is the same. Furthermore, a driving element for individually driving each sub-pixel is required.

  Here, as shown in FIG. 6 described above, in the active matrix LCD, as a driving element, a switching element SW using a thin film transistor (TFT) or the like and data supplied from a data line are held for a predetermined period. A holding capacitor Cs is provided. However, as shown in FIG. 8, the switching element SW and the storage capacitor Cs need to be formed in a light-shielding region that does not contribute to the display of the pixel region in order to prevent the occurrence of leakage current. Therefore, it is difficult to improve the aperture ratio that represents the area that can be actually displayed with respect to the area per pixel, and the aperture ratios of the R, G, and B sub-pixels necessary for color display are lowered. Therefore, it is desired to further improve the aperture ratio especially when the above four-color display is adopted.

  Moreover, in order to achieve both outdoor visibility with high external light intensity and visibility at night and indoors with low external light intensity, each subpixel constituting one pixel is used as a display device for portable devices. In other cases, a so-called transflective LCD having a reflective display area (area that operates as a reflective type) and a transmissive display area (area that operates as a transmissive type) may be used. In such a transflective LCD, the display can be visually recognized even in an environment with different external light intensity. However, on the other hand, the reflective area has a small contribution to improving visibility in an environment with low external light intensity, and the transmissive area has low contribution to visibility in an environment with high external light intensity. The display quality in an environment with high intensity is lower than that of a perfect reflection type display device, and the display quality in an environment with low external light intensity is lower than that of a perfect transmission type display device. Therefore, it is desired to realize visual recognition under various usage environments, excellent display quality, high display luminance, and reduction in power consumption.

  An object of the present invention is to realize an electro-optical device that achieves both improvement in aperture ratio and display quality in a different environment.

  The present invention is an electro-optical device including a plurality of pixels, wherein each pixel in the plurality of pixels includes a plurality of sub-pixels, and at least one of the plurality of sub-pixels constituting one pixel is At least one other of the plurality of sub-pixels is formed in the transmission region, and the plurality of sub-pixels in the one pixel are driven in the reflection region. The drive element for this is formed.

  In another aspect of the invention, in the electro-optical device, the plurality of sub-pixels constituting the one pixel are associated with different colors, and the sub-pixels formed in the reflective region are associated with colorless. ing.

  In another aspect of the invention, in the electro-optical device, the plurality of sub-pixels constituting the one pixel are associated with any one of colorless, red, blue, and green and are allocated to the reflection region. The sub-pixel is associated with colorless.

  According to still another aspect of the invention, in the electro-optical device, the reflection region includes a reflection layer having irregularities that scatter external light, and display using reflected light of external light from the reflection layer The transmissive region is a region for performing display using transmitted light from the light source.

  In another aspect of the invention, the reflective layer is formed so as to cover a region in which the driving element for driving a plurality of sub-pixels constituting the one pixel is provided, and the reflective layer includes: The unevenness is formed due to the presence of the driving element.

  In another aspect of the present invention, among the plurality of sub-pixels constituting the one pixel, the sub-pixel formed in the reflection region has a scanning line for selecting each of the plurality of sub-pixels, and the plurality of sub-pixels. Are provided corresponding to the intersections with the data lines for supplying data to the sub-pixels.

  In another aspect of the invention, the plurality of sub-pixels constituting the one pixel are arranged side by side in the direction in which the scanning line extends or in the direction in which the data line extends.

  Furthermore, in another aspect of the invention, in the electro-optical device, the plurality of sub-pixels constituting the one pixel are arranged in a block shape in a row direction and a column direction, and the plurality of sub-pixels constituting the one pixel are arranged. Of the sub-pixels, the sub-pixels formed in the reflection region are arranged adjacent to the sub-pixels formed in the reflection region of the adjacent pixels.

  As described above, according to the present invention, in an electro-optical device typified by an LCD or the like, one pixel includes a plurality of sub-pixels, at least one of which is formed in a reflective region, and at least one is formed in a transmissive region. A drive element for driving each of the plurality of sub-pixels including the transmissive region in the region is formed. In other words, the display device has a reflective display function and a transmissive display function, and a drive element for driving not only the reflective area but also a sub-pixel in the transmissive area is provided in the reflective area that does not contribute to the transmissive display. The entire area of the sub-pixels in the transmissive area can be used as an opening, that is, a transmissive display area, and the aperture ratio in the transmissive area can be greatly improved.

  In addition, among the plurality of sub-pixels constituting one pixel, the sub-pixel formed in the reflective region (assigned to the reflective display region) is associated with colorless (single color, for example, white), thereby improving the transmissive display quality. However, it is possible to efficiently perform the reflective display. In a liquid crystal display device, a reflection type display is a reflection provided on the back side substrate through the liquid crystal layer formed by enclosing the liquid crystal between the back side and the substrate on the observation side from the outside. The light reflected by the layer is transmitted again through the liquid crystal layer to control the amount of light emitted from the observation-side substrate. Here, in the case of performing color display with a reflection type, it is necessary to provide a color filter between the reflection layer and the surface of the observation side substrate. However, as described above, the light source is external light, and observation is performed. The light to be transmitted is light that has been transmitted through the color filter twice and emitted to the outside. Therefore, compared with a transmissive display in which color display is realized by light emitted from the light source once through the color filter and the liquid crystal layer, light loss due to the color filter and display with higher brightness than external light For reasons such as the inability to do so, the color purity tends to be low and the display brightness tends to be low. However, as in the present invention, by associating white display with this reflection region, a color filter can be eliminated, and high-luminance reflection display is possible without light loss due to the color filter. In addition, as described above, the reflective display is difficult to achieve high-brightness display with high color purity even if a color filter is employed, so that, as in the present invention, high-brightness reflective display can be achieved even with a single color display. Substantial deterioration in display quality can be suppressed to a very low level.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments (hereinafter referred to as embodiments) of the invention will be described with reference to the drawings. In the following, examples of the electro-optical device according to the present embodiment include an LCD (Liquid Crystal Display) and an EL (Electro Luminescence) Display. The LCD will be described below as an example.

[Embodiment 1]
FIG. 1 shows a schematic layout of one pixel of the LCD according to the first embodiment. In the LCD, a plurality of pixels 200 are arranged in a matrix on a display portion on a panel, and each pixel 200 has a plurality of scanning lines 10 for selecting each pixel 200 and a plurality of data lines for supplying data signals. The data line 12 is provided at or near each intersection region.

  The one pixel 200 is composed of a plurality of sub-pixels 20, and in this embodiment, one pixel is composed of sub-pixels 20r, 20b, 20g, and 20w of four colors of R, G, B, and W. . Further, in the present embodiment, the sub-pixels 20 constituting the one pixel 200 are all arranged in order along the extending direction (horizontal scanning direction) of the scanning line 10.

  In this embodiment, as the at least one sub-pixel of the plurality of sub-pixels 20, the entire area of the sub-pixel 20w associated with white is set as the reflection area 204, and the reflection area 204 is within the area. A driving element 22w for driving the sub-pixel 20w and driving elements 22r, 22g, and 22b for driving the remaining sub-pixels 20r, 20g, and 20b are formed.

  The R, G, and B sub-pixels 20r, 20b, and 20g other than W are sub-pixels that can realize so-called color display. In the present embodiment, these regions include the corresponding driving elements 22r, 22g, and 22b. Therefore, there is no area to be shielded from light, and the entire area is the transmission area 202. Therefore, in the first embodiment, the transmissive display is performed by the transmissive subpixels 20r, 20g, and 20b of the three colors R, G, and B, and the reflective display is performed mainly by the W reflective subpixel 20w. Yes.

  The data line 12 is provided in a direction intersecting with the scanning line 10 (here, a vertical scanning direction), and supplies a data signal corresponding to the display content to each sub-pixel 20. , G, B, and W, respectively. Furthermore, in the present embodiment, as described above, the drive element 22 that drives each sub-pixel 20 is disposed in the formation region of the W sub-pixel 20w. Therefore, in the present embodiment, as illustrated in FIG. The data lines 12r, 12b, 12g, and 12w are all formed so as to pass through the arrangement region of the W sub-pixel 20w.

  The driving element 22 in the area of the W sub-pixel 22w is electrically connected to the corresponding sub-pixel 22 of R, G, B, and W, and the data signal necessary for display with respect to the sub-pixel 20 is displayed. (Voltage signal) is wired so that it can be supplied. Therefore, although not particularly limited to the arrangement of FIG. 1, in the example of FIG. 1, the B sub-pixel 20b that is farthest from the sub-pixel 20w is driven in the order from the corresponding scanning line 10. Driving element 22b, driving element 22g for G sub-pixel 20g, driving element 22r for R sub-pixel 20r, and driving element 22w for W sub-pixel 20w are in the vertical scanning direction (column direction; extension of data line) Direction).

  The circuit configuration of each subpixel 20 can employ, for example, an equivalent circuit as shown in FIG. 6 described above. In this case, the drive element 22 of each subpixel 20 includes a switching element 24 and a storage capacitor 26. In this case, the switching element 24 employs a TFT having a gate connected to the scanning line 10. Each of the drive elements 22 for the R, G, B, and W sub-pixels 20 (24r, g, b, w, 26r, g, b, and w) is replaced with a sub-pixel of W as shown in FIG. It is provided in the formation region of the pixel 20w.

  Note that the driving element 22 is not limited to the TFT (switching element) 24 and the storage capacitor 26, and a TFD (thin film diode) or the like may be employed as another switching element. Further, when a memory element such as a RAM (volatile memory) is provided as a driving element 22 in one sub-pixel for the purpose of holding display data (for example, digital data) for a long time, All the memory elements are also arranged in the formation region of the W sub-pixel 20w which is a reflection region.

  FIG. 2 shows a part of a schematic cross section of one pixel shown in FIG. As shown in FIG. 2, the LCD includes a liquid crystal layer 250 sealed between the first substrate 100 and the second substrate 300. In this example, the surface of the substrates 100 and 300 facing the liquid crystal layer 250. Are formed with a first electrode 210 and a second electrode 310 for controlling the alignment of the liquid crystal layer 250, respectively. An alignment film 230 for controlling the initial alignment of the liquid crystal is provided on the surface on the contact side with the liquid crystal layer 250 that covers the first electrode 210 and the second electrode 310.

  Transparent substrates such as glass are used for the first and second substrates 100 and 300, and pixel electrodes having individual patterns are provided on the first substrate 100 side as the first electrodes 210 for each sub-pixel 20. The second electrode 310 on the second substrate 300 side is provided as a common common electrode common to each pixel.

  As the material of the second electrode 320, a transparent conductive material such as indium tin oxide (hereinafter referred to as ITO) can be used, and the R, G, and B subpixels constituting the transmissive region 202 can be used. Similarly, a transparent conductive material can be used as the material of the first electrodes 210r, 210g, and 210b.

  Further, among the first electrodes 210, the first electrodes 210w of the W sub-pixels constituting the reflective region 204 are made of a reflective electrode material such as a metal capable of reflecting light and also serve as a reflective layer. An element layer 220 is provided between the first substrate 100 and the first electrode 210w of the W sub-pixel 20w, and the drive element 22 of each sub-pixel is formed.

  Even if a reflective material is not used as the material of the first electrode 210w, a reflective layer can be provided separately from the first electrode 210w. Thus, when a reflective layer different from the first electrode 210w is employed, the reflective layer is preferably formed so as to cover at least the element layer 220. Here, the element layer 220 is shown as a single layer in the figure for the sake of simplicity, but actually, for example, an active layer, a gate insulating layer, a gate electrode, a source / drain electrode, which constitutes the switching element 24, An electrode, a dielectric layer (insulating layer) and the like constituting the capacitor Cs are formed in a desired pattern, and an interlayer insulating layer 222 is formed to cover these element layers. A contact hole is formed in a predetermined region of the interlayer insulating film, and the switching element 24 and the storage capacitor 26 are connected to the first electrode 210 of the corresponding subpixel 20.

  In addition, a color filter 320 is formed between the second substrate 300 and the second electrode 310, and the R, G, and B color filters 320 are formed in regions facing the first electrodes 210r, 210g, and 210b, respectively. Is provided. On the other hand, in the area of the W sub-pixel 20 w, no color filter is required for displaying W, and the color filter 320 is not provided between the second substrate 300 and the second electrode 310. In other words, in the W sub-pixel 20w, display with light of a single color (colorless or non-colored) is performed. Normally, external light (for example, natural light such as sunlight and room lights) is white. By controlling the amount of white external light (reflected) emitted from the LCD by liquid crystal, white and black light is controlled. Single color display is performed. Of course, in the W sub-pixel 20w, when the external light source is not white light, monochrome display corresponding to the color of the external light source is performed. Note that a colorless (transparent) filter 320 may also be formed in the region of the W sub-pixel 20w. This transparent filter can be formed using, for example, a transparent resin material. By providing this filter layer, the cell gap is aligned with the sub-pixels 20 of other colors, and the liquid crystal on the second substrate 300 side is It becomes easy to improve the flatness of the contact surface.

  In the R, G, and B sub-pixels 20r, 20g, and 20b, the orientation of the liquid crystal layer 250 is controlled by the second electrode 310 facing the first electrodes 210r, 210g, and 210b. Thus, the amount of light from the light source 350 provided on the back side of the first substrate 100 that is transmitted through the first electrode 210, the liquid crystal layer 250, the second electrode 310, etc. and is emitted from the second substrate 300 to the outside is controlled. In the R, G, and B sub-pixels 20r, 20g, and 20b, transmissive display (transmissive operation) is performed.

  On the other hand, in the W sub-pixel 20w, the orientation of the liquid crystal layer 250 is controlled by the first electrode 210w and the opposing second electrode 310, so that the second substrate 300, the second electrode 310, and the liquid crystal layer 250 are interposed. The amount of external light 360 such as sunlight and room light that has reached the reflective layer (reflective electrode) is reflected, passes through the liquid crystal layer 250 again, and is emitted to the outside through the second electrode 310 and the second substrate. Is controlled, and reflection display (reflection operation) is performed on the W sub-electrode 20w.

  Here, as described above, the reflective first electrode 220w or the single reflective layer (hereinafter, a layer having both functions is simply referred to as a reflective layer) is formed so as to cover the element layer 220. . That is, by providing the reflective layer so as to cover the driving element 22, the presence of the element layer 220 formed below the reflective layer (210w) on the surface of the reflective layer on the liquid crystal layer 250 side, the shape of the driving element, and the like As a result, irregularities that are inherited from the irregularities generated on the surface of the interlayer insulating layer 222 are formed.

  FIG. 3 illustrates the uneven state of the reflective layer 210w. FIG. 3A is an enlarged view of a cross section of the reflective layer (210w) of FIG. 2, and FIG. 3B shows a schematic plan view of the reflective layer (210w). As shown in the figure, an interlayer insulating layer 222 is formed so as to cover the element layer 220, and a reflective layer 210w is formed on the interlayer insulating layer 222, so that, for example, a recess 212 is formed on the surface of the reflective layer 210w as shown in FIG. Is formed.

  By providing irregularities on the surface of the reflective layer 210w in this manner, light incident on the liquid crystal layer 250 from the outside can be appropriately scattered on the surface of the reflective layer 210w, and external reflection and glare in the reflective region can be achieved. It is possible to improve the reflective display quality.

  Note that since the unevenness of the reflecting surface is random, the light scattering uniformity is higher. In FIG. 1, the driving elements 22 are regularly arranged in the reflecting region 204. However, the wiring and layout are adjusted. It is more preferable to arrange the projections and depressions to be random. In this way, by forming the reflection layer 210w so as to cover the element layer 22 and forming the unevenness on the reflection surface, it is not necessary to add a special process for forming the unevenness, which contributes to the improvement of manufacturing efficiency. it can.

[Embodiment 2]
FIG. 4 shows a pixel layout of the LCD according to the second embodiment. In the first embodiment, as shown in FIG. 1, the sub-pixels 20 constituting one pixel 200 are all arranged in order along the extending direction (row direction) of the scanning line 10, but in the second embodiment, reflection is performed. The sub-pixels 20w constituting the region 204 are arranged in the intersecting regions with the data lines 12 (12r, 12g, 12b, 12w) along the extending direction of the scanning lines 10 for selecting the plurality of sub-pixels 20 respectively. The remaining R, G, and B sub-pixels 20r, 20g, and 20b constituting the transmissive region 202 are arranged in the row direction in the same manner as in the first embodiment (in the drawing, B, G, R in this order).

  Therefore, the distances between the driving elements 22r, 22g, and 22b for the transmissive region 202 provided in the region of the sub-pixel 20w and the corresponding sub-pixels 20r, 20g, and 20b are R, G, and B sub-pixels 22 respectively. The wiring layout between the driving element 22 and the corresponding sub-pixel 20 can be easily designed.

[Embodiment 3]
FIG. 5 shows a pixel layout of the LCD according to the third embodiment. In the first embodiment, one pixel 200 is configured by a plurality of sub-pixels 20 arranged in the extending direction of one scanning line 10, but in the third embodiment, one pixel 200 has a row direction. It is composed of a plurality of sub-pixels 20 arranged in blocks in both column directions.

  The plurality of sub-pixels 20 are assigned to R, G, B, and W (20r, 20b, 20g, and 20w), and are arranged in a matrix of 2 rows and 2 columns (block shape) in the example of FIG. One pixel 200 is constituted by the four sub-pixels 20. The arrangement of the four sub-pixels 20 is not particularly limited. However, in the present embodiment, the w sub-pixel 20 w is disposed adjacent to the W sub-pixel 20 w of the adjacent pixel 200. In the example of FIG. 5, the W sub-pixel 20 w is adopted as the four sub-pixels 20 at positions where the four pixels 200 are in contact with the remaining three pixels. As a result, four W sub-pixels 20 w are arranged in the center of the four pixels 200.

  On the other hand, the R, G, and B sub-pixels 20r, 20g, and 20b constituting the transmissive region 202 are arranged so that the colors thereof do not match the opposing sub-pixels of the adjacent pixel 200. When the adjacent sub-pixels 20 of the same color between adjacent pixels emit light at the same time, the color may be emphasized and the display resolution may be apparently reduced. However, the R, G, B sub-pixels 20r, 20g, By arranging 20b so that different colors are arranged in adjacent pixels, it is possible to prevent such deterioration in display quality.

  As for the W sub-pixel 20w, this sub-pixel is originally displayed in a single color, and only a specific color component is emphasized and the white balance is not shifted. As shown in FIG. It is effective to improve wiring efficiency by doing so. However, the area of one sub-pixel is large to some extent, and a plurality of sub-pixel drive elements 22 can be arranged in one sub-pixel, or an apparent resolution reduction can be more reliably prevented even in reflective display. When there is a strong demand, it is not necessary to arrange the sub-pixels 20w for the reflective region 204 in adjacent pixels. As an example, by adopting the layout pattern of the upper two pixels 200 in FIG. 5 also in the lower two pixel layouts 200, it is possible to achieve both wiring efficiency and reflective display resolution.

  Further, as shown in FIG. 5, when the W sub-pixel 20w is arranged at the center of the four pixels 200, the scanning line 10 and the data line 12 are, for example, in the row direction and the column direction sandwiching the W sub-pixel 20w. By arranging the lines symmetrically with respect to the center, signals necessary for the drive elements 22 for all the sub-pixels 20 can be efficiently supplied by the wiring layout.

  The layout of the driving element 22 in the region of the W sub-pixel 22w is not particularly limited as long as a necessary signal can be supplied to the corresponding sub-pixel 20, but as an example, as shown in FIG. It is more preferable to arrange the sub-pixels 20r, 20g, and 20b so that the wiring distances are as short as possible and the wiring distances are equal to each other.

  Here, also in Embodiments 2 and 3, the light scattering property can be enhanced by providing irregularities on the reflective surface of the reflective layer (210w) in the reflective region 204. The unevenness can be easily realized by forming the drive element 22 below the reflective layer. Of course, in order to further improve the uniformity of scattering, irregularities may be positively formed in the interlayer insulating layer 222 shown in FIG.

  In the first to third embodiments, the example in which the sub-pixels 22 of the three colors R, G, B, and W are assigned to the transmissive region 202 has been described. However, other colors for realizing color display have been described. The sub-pixel 20 may be assigned. Not only the above three colors but also sub-pixels of colors such as magenta and cyan are adopted as the transmission region 202. In addition, it is possible to drive liquid crystal at high speed, such as OCB (Optical Compensated Birefringence) mode, and to realize R, G, B color display with one subpixel by turning on light sources of different colors periodically Can also be adopted. Even in this case, it is only necessary to assign the sub-pixel 20w of a single color such as W to the reflective region 204 and assign the sub-pixel 20 capable of realizing color display to the remaining transmissive region 202.

It is a figure which shows the outline of the pixel layout of LCD which concerns on Embodiment 1 of this invention. It is a figure which shows schematic sectional structure of 1 pixel of LCD which concerns on embodiment of this invention. It is a figure which shows the cross section and planar structure which demonstrate the reflection layer shown in FIG. 2 in detail. It is a figure which shows the outline of the pixel layout of LCD which concerns on Embodiment 2 of this invention. It is a figure which shows the outline of the pixel layout of LCD which concerns on Embodiment 3 of this invention. It is a figure which shows the equivalent circuit of the pixel of a general active matrix type LCD. It is a figure which shows the layout of the R, G, B, and W sub pixel concerning the conventional LCD. It is a figure explaining the general pixel layout of the conventional active matrix type LCD.

Explanation of symbols

  10 scanning lines, 12 data lines, 20 sub-pixels, 22 driving elements, 24 switching elements, 26 holding capacitors, 100 first substrate, 200 pixels, 202 transmissive area (transmissive display area), 204 reflective area (reflective display area), 210 first electrode, 220 element layer, 222 interlayer insulating layer, 230 alignment film, 250 liquid crystal layer, 300 second substrate, 310 second electrode (common electrode), 320 color filter.

Claims (8)

An electro-optical device including a plurality of pixels,
Each pixel in the plurality of pixels includes a plurality of sub-pixels,
At least one of the plurality of sub-pixels constituting one pixel is formed in a reflective region, and at least one other of the plurality of sub-pixels is formed in a transmissive region,
An electro-optical device, wherein a drive element for driving each of the plurality of sub-pixels in the one pixel is formed in the reflection region. The electro-optical device according to claim 1.
The electro-optical device, wherein the plurality of sub-pixels constituting the one pixel are associated with different colors, and the sub-pixels formed in the reflective region are associated with colorless. The electro-optical device according to claim 1.
The plurality of sub-pixels constituting the one pixel are associated with any one of colorless, red, blue, and green, and the sub-pixel formed in the reflection region is associated with colorless. Electro-optical device characterized. The electro-optical device according to any one of claims 1 to 3,
The reflective region is a region that includes a reflective layer having irregularities that scatter external light, and that performs display using reflected light of external light from the reflective layer,
The electro-optical device, wherein the transmissive region is a region for performing display using transmitted light from a light source. The electro-optical device according to claim 4.
The reflective layer is formed so as to cover a region where the drive element for driving the plurality of sub-pixels constituting the one pixel is provided, and the reflective layer is caused by the presence of the drive element. An electro-optical device, wherein the unevenness is formed.
The electro-optical device according to any one of claims 1 to 5,
Among the plurality of sub-pixels constituting the one pixel,
The sub-pixels formed in the reflective region are provided corresponding to the intersections of scanning lines for selecting each of the plurality of sub-pixels and data lines for supplying data to the plurality of sub-pixels. An electro-optical device. The electro-optical device according to claim 6.
The electro-optical device, wherein the plurality of sub-pixels constituting the one pixel are arranged in order in a direction in which the scanning line extends or a direction in which the data line extends. The electro-optical device according to any one of claims 1 to 5,
The plurality of sub-pixels constituting the one pixel are arranged in a block shape in a row direction and a column direction,
Among the plurality of sub-pixels in the one pixel, the sub-pixel formed in the reflection region is arranged so as to be adjacent to the sub-pixel formed in the reflection region of one pixel adjacent to the one pixel. An electro-optical device.

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