JP2005084513A - Electrooptical device and electronic apparatus equipped therewith - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electrooptical device which can prevent streaks from becoming visible at the circumferential edges of an image display region and an electronic apparatus provided therewith. <P>SOLUTION: In an electrooptical device 100 of a transflective type, sub pixels 11' lining up in the vertical direction along the circumferential edges of the image display region 1a have a narrower exposure area of a light reflection film 33 as compared to other sub pixels 11 and also a narrower area of a light transmission window 330, and hence the amount of the exit light of display light is low. Therefore, even when white display is performed in the image display region 1a, the color light emitted from the sub pixels 11' lining up in the vertical direction along the circumferential edges of the image display region 1a is not combined sufficiently with the color light emitted from the adjacent sub pixels 11, and no conspicuous streaks are observed. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an electro-optical device in which a large number of sub-pixels corresponding to each color are arranged in a matrix within an image display region, and an electronic apparatus using the same.

  In an electro-optical device such as a matrix type liquid crystal display device or an organic electroluminescence type display device, as shown in FIG. 12, sub-pixels 11 of the same size corresponding to each color (red R, green G, blue B) are arranged in a matrix. Are arranged at equal pitches. The color arrangement shown here is a stripe arrangement, and the sub-pixels 11 corresponding to the respective colors R, G, and B are arranged in the vertical direction (for example, see Patent Document 1).

In such an electro-optical device, generally, a rectangular image display region 1a is defined by a frame-shaped parting 50 formed of a light-shielding film, and the outer peripheral side of the image display region 1a is referred to as a frame region 1b. It does not contribute directly to the display.
JP 2002-207210 A

  In the electro-optical device configured in this way, the three sub-pixels 11 of red R, green G, and blue B constitute one pixel, and the color light emitted from the sub-pixels 11 of each color is combined, Display a color image.

  However, in the sub pixel 11 ′ located on the peripheral edge 1 c (the inner peripheral edge 55 of the parting-off 50) of the image display area 1 a, the sub pixel 11 is only in three directions unlike the sub pixel 11 on the center side of the image display area 1 a. not exist. For this reason, the color light emitted from the sub-pixel 11 ′ located at the peripheral edge 1 c of the image display region 1 a is not sufficiently combined with the color light emitted from the adjacent sub-pixel 11. As a result, when the white screen is displayed, in the example of the color arrangement shown in FIG. 12, green stripes can be seen at the left end and blue stripes can be seen at the right end of the periphery 1c of the image display area 1a. There is a problem that.

  In view of the above problems, an object of the present invention is to provide an electro-optical device capable of preventing streaks from being seen at the periphery of an image display region, and an electronic apparatus including the electro-optical device.

  In order to solve the above problems, according to the present invention, in an electro-optical device in which a large number of sub-pixels corresponding to each color are arranged in a matrix in an image display area, at least two of the peripheral edges of the image display area are opposed to each other. The sub-pixels arranged along the side are characterized in that the amount of emitted display light is lower than that of the other sub-pixels.

  The present invention is particularly effective when applied to an electro-optical device in which the sub-pixels arranged along the two sides all correspond to the same color in one row.

  In the present invention, the plurality of sub-pixels are usually configured to have the same size.

  In the present invention, when any of the plurality of sub-pixels is surrounded by a light-shielding film, the plurality of sub-pixels are arranged along the two sides in order to reduce the amount of light emitted from the sub-pixels arranged along the two sides. As for the sub-pixels, the region surrounded by the light-shielding film may be made narrower than other sub-pixels.

  In the present invention, the electro-optical device can be configured as a reflective electro-optical device by forming a light reflective layer for reflective display on any of the large number of sub-pixels.

  In the present invention, a light reflective layer for reflective display in which a light transmissive window for transmissive display is formed is formed in any of the large number of sub-pixels, and transmissive display is performed at least in a region overlapping with the light transmissive window. If a transparent electrode layer is formed, a transflective electro-optical device can be configured. In this case, the sub-pixels arranged along the two sides have a smaller area of the light transmission window and a smaller area of the light reflection film surrounded by the light-shielding film than the other sub-pixels. For example, in both the reflection mode and the transmission mode, the amount of light emitted from the sub-pixels arranged along the two sides can be reduced.

  In the present invention, when the electro-optical device is configured as a transmissive electro-optical device, a transparent electrode layer for transmissive display may be formed on any of the large number of sub-pixels.

  In the present invention, when the electro-optical device is configured as a liquid crystal device, a liquid crystal cell for light modulation is formed in any of the large number of subpixels.

  In the present invention, when the electro-optical device is configured as an electroluminescence device, an electroluminescence element for light modulation is configured in any of the large number of sub-pixels.

  The electro-optical device according to the present invention can be used as a display unit in electronic devices such as a mobile phone and a mobile computer.

  In the present invention, among the sub-pixels arranged in a matrix in the image display area, the sub-pixels arranged along at least two opposite sides of the periphery of the image display area are compared with the other sub-pixels. Therefore, even if the color light emitted from such a sub-pixel is not sufficiently combined with the color light emitted from the adjacent sub-pixel, it does not stand out as a streak.

  Embodiments of the present invention will be described with reference to the drawings.

[Embodiment 1]
(overall structure)
FIG. 1 and FIG. 2 are a plan view showing the overall configuration of the electro-optical device of this embodiment, and a block diagram showing the electrical configuration. 3 and 4 are an exploded perspective view showing the configuration of the electro-optical device shown in FIG. 1 and an enlarged cross-sectional view showing a part thereof, respectively. FIG. 5 is a plan view showing a layout for several pixels including a TFD element in the electro-optical device, and FIG. 6 is a cross-sectional view taken along the line AA ′. 4 and 5 illustrate the sub-pixels arranged in the vertical direction at the periphery of the image display area of the electro-optical device, and other sub-pixels.

  An electro-optical device 100 shown in FIG. 1 is an active matrix type transflective liquid crystal device using nematic liquid crystal, and sub-pixels 11 of the same size corresponding to each color (red R, green G, and blue B) are arranged in a matrix. Many are arranged in the shape. The color arrangement shown here is a stripe arrangement, and the sub-pixels 11 corresponding to the respective colors R, G, and B are arranged in the vertical direction.

  In such an electro-optical device 100, a rectangular image display region 1a is generally defined by a parting line 50 formed of a light shielding film, and the outer peripheral side of the image display region 1a is referred to as a frame region 1b. There is no direct contribution to the display.

  As shown in FIG. 2, in the electro-optical device 100 of the present embodiment, a plurality of scanning lines 31 are formed in the row (X) direction, and a plurality of data lines 21 are formed in the column (Y) direction. A sub pixel 11 is formed at each intersection of the scanning line 31 and the data line 21. In each subpixel 11, a liquid crystal layer 12 (liquid crystal cell) made of nematic liquid crystal and a TFD element 40 which is a two-terminal active element are connected in series. In the example shown here, the liquid crystal layer 12 is connected to the scanning line 31 side, and the TFD element 40 is connected to the data line 21 side. Each scanning line 31 is driven by a scanning line driving circuit 350, while each data line 21 is driven by a data line driving circuit 250.

  As shown in FIG. 3, the electro-optical device 100 uses a liquid crystal panel 10 in which a pair of translucent substrates are bonded to each other with a predetermined gap, and includes an upper polarizing plate 2 and a first upper phase difference. The plate 3, the second upper phase difference plate 4, the liquid crystal panel 10, the first lower phase difference plate 5, the second lower phase difference plate 6, and the backlight device 9 are stacked in this order from the upper side to the lower side. Has been placed.

  In the liquid crystal panel 10, one light transmissive substrate is an element side substrate 20 on which an active element is formed, and the other light transmissive substrate is a counter substrate 30 facing the element side substrate 20. The element-side substrate 20 and the counter substrate 30 are bonded to each other with a predetermined gap by a sealing material 14 including a spacer (not shown), and the liquid crystal layer 12 is sealed and held in this gap. Yes.

  In the electro-optical device 100, a liquid crystal driving IC (driver) constituting the data line driving circuit 250 is directly mounted on the surface of the element side substrate 20 by, for example, COG (Chip On Glass) technology. In addition, a liquid crystal driving IC (driver) constituting the scanning line driving circuit 350 is directly mounted. The configuration is not limited to the COG technique, and the IC chip and the electro-optical device may be connected using other techniques. For example, a TAB (Tape Automated Bonding) technique may be used to electrically connect a TCP (Tape Carrier Package) in which an IC chip is bonded on an FPC (Flexible Printed Circuit) to an electro-optical device. Further, COB (Chip On Board) technology for bonding an IC chip to a hard substrate may be used.

  As shown in FIGS. 4 and 5, a base film 25 is formed on the inner surface of the element-side substrate 20, and a plurality of data lines 21 and their data lines are formed on the surface of the base film 25. A plurality of TFD elements 40 connected to 21 and pixel electrodes 23 connected to the TFD elements 40 in a one-to-one relationship are formed. The pixel electrode 23 is formed of a light-transmitting conductive film such as ITO (Indium Tin Oxide). Each data line 21 extends linearly, while the TFD elements 40 and the pixel electrodes 23 are arranged in a dot matrix. On the surface of the pixel electrode 23 and the like, an alignment film 24 subjected to a rubbing process is formed. The alignment film 24 is generally formed from a polyimide resin or the like.

  On the other hand, on the inner surface of the counter substrate 30, a light reflecting layer 33 made of a single layer film or a multilayer film of aluminum, aluminum alloy, silver, silver alloy, or the like, and red (R ), Green (G), blue (B) color filter layers 341R, 342R, 341G, 342G, 341B, 342B, an overcoat layer 35, and a strip-shaped counter electrode 36 made of a light-transmitting conductive film such as ITO. An alignment film 37 is formed from polyimide resin or the like. The light reflection layer 33 is for display in the reflection mode, and the light reflection layer 33 is formed with a light transmission window 330 that enables display in the transmission mode. Further, a black matrix 38 made of a light shielding film is formed in the gap between the color filter layers of different colors, and is configured to shield incident light from the gap of the color filter layer. The overcoat layer 35 has improved smoothness on the surfaces of the color filter layers 341R, 342R, 341G, 342G, 341B, 342B, and the black matrix 38. Here, the counter electrode 36 functions as the scanning line 31 and is formed in a direction orthogonal to the data line 21.

  As shown in FIGS. 5 and 6, the TFD element 40 includes a first TFD element 40 a and a second TFD element 40 b, and the first metal film is formed on the insulating film 25 formed on the surface of the element substrate 20. 42, an oxide film 44 as an insulator formed on the surface of the first metal film 42 by anodic oxidation, and second metal films 46a and 46b formed on the surface and spaced apart from each other. Further, the second metal film 46 a becomes the data line 21 as it is, while the second metal film 46 b is connected to the pixel electrode 23.

  The first TFD element 40a becomes the second metal film 46a / oxide film 44 / first metal film 42 in order from the data line 21 side, and becomes metal (conductor) / insulator / metal (conductive). Therefore, it has diode switching characteristics in both positive and negative directions. On the other hand, when viewed from the data line 21 side, the second TFD element 40b becomes the first metal film 42 / oxide film 44 / second metal film 46b in order, which is opposite to the first TFD element 40a. The diode switching characteristics are as follows. Accordingly, since the TFD element 40 has two diodes connected in series in opposite directions, the current-voltage nonlinear characteristic is symmetric in both positive and negative directions compared to the case where one diode is used. Will be. If it is not necessary to strictly symmetrize the nonlinear characteristics as described above, only one TFD element 40 may be used.

  The TFD element 40 is an example of a diode element. In addition, an element using a zinc oxide (ZnO) varistor, an MSI (Metal Semi Insulator), etc., or these elements can be used alone or in a reverse direction. Those connected in series or in parallel can be applied.

(Detailed configuration of each sub-pixel)
3 and 4, in the electro-optical device 100 of the present embodiment, the light emitted from the backlight device 9 is incident on the liquid crystal panel 10 and then the light transmission window of the light reflecting layer 33 as indicated by the arrow L1. 330 enters the liquid crystal layer 12 and exits from the element substrate 20 side. At that time, the display light is optically modulated by the liquid crystal layer 12 in each sub-pixel 11 to display an image in the transmission mode.

  On the other hand, the external light incident from the element substrate 20 side is reflected by the light reflecting layer 33 through the liquid crystal layer 12 as shown by an arrow L2, and is emitted from the element substrate 20 side again through the liquid crystal layer 12. Is done. At that time, the display light is optically modulated by the liquid crystal layer 12 in each sub-pixel 11 to display an image in the reflection mode.

  In addition, when the directionality of the light reflected by the light reflecting layer 33 is strong, the viewing angle dependency such as the brightness being different depending on the angle at which the image is viewed becomes remarkable. Therefore, on the surface side of the counter substrate 30, a concavo-convex forming layer 32 is formed on the lower layer side of the light reflecting layer 33, and by this concavo-convex forming layer 32, a minute unevenness for light scattering is formed on the surface of the light reflecting layer 33. Is formed. Such a concavo-convex forming layer 32 is formed of two or one photosensitive resin layer.

  Here, in the reflection mode, the light passes through the color filter layer twice, but in the transmission mode, light passes through the color filter layer only once. For this reason, when a color image is displayed in the transmissive mode, the color may be lighter than when a color image is displayed in the reflective mode. Therefore, in any of the sub-pixels 11, color filter layers 342 R, 342 G, and 342 B for reflection display are formed in the region overlapping with the light reflection layer 33, and in the region overlapping with the light transmission window 330 in a transmission manner. Display color filter layers 341R, 341G, and 341B are formed.

(Aperture ratio of each sub-pixel)
As shown in FIGS. 1, 4, and 5, in the electro-optical device 100 of this embodiment, all the sub-pixels 11 are formed at the same pitch and the same size, but the peripheral edge 1 c ( Of the inner peripheral edge 55 of the parting-off 50), for the sub-pixels 11 'arranged along at least two opposing sides, the ratio of the area where display light is emitted to the pixel area (opening) compared to the other sub-pixels 11 Rate) is reduced, and the amount of emitted display light is reduced. In this embodiment, in correspondence with the arrangement of the color filter layers, the aperture ratio of the sub-pixels 11 ′ arranged in the vertical direction at the peripheral edge 1c of the image display region 1a is reduced, and the display light is emitted from these sub-pixels 11 ′. The light intensity is low.

  In such a configuration, in the counter substrate 30 of the electro-optical device 100, each sub-pixel 11 is surrounded by the black matrix 38 made of a light shielding film, or the black matrix 38 and the parting-off 50. The black matrix 38 surrounding the sub-pixels 11 'arranged in the vertical direction at the periphery 1c of the image display area 1a and the light-shielding film constituting the parting 50 are thickened in the vertical direction so that the sub-pixel 11' The area surrounded by the black matrix 38 and the parting line 50 is reduced.

  In this embodiment, the area of the light transmission window 330 formed in the light reflection layer 33 is narrowed for the sub-pixels 11 ′ arranged in the vertical direction at the periphery 1 c of the image display region 1 a.

  For this reason, in the electro-optical device 100 according to the present embodiment, the exposed area of the light reflecting film 33 in the sub-pixels 11 ′ arranged in the vertical direction along the peripheral edge 1 c of the image display region 1 a as compared with the other sub-pixels 11. (The area of the light reflecting layer 33 that is not covered with the black matrix 38 or the parting line 50) is narrow, and the area of the light transmitting window 330 is also narrow. Therefore, the ratio of the area from which the display light is emitted to the pixel area is small in the reflection mode and the transmission mode for the sub-pixel 11 ′, and the amount of light emitted from the display light is small. Low. Therefore, in both the reflection mode and the transmission mode, when white display is performed in the image display region 1a, the color light emitted from the sub-pixels 11 'arranged in the vertical direction along the peripheral edge 1c of the image display region 1a is Even if it is not sufficiently combined with the color light emitted from the adjacent sub-pixel 11, it does not stand out as a streak. That is, in FIG. 1, no green streak is seen at the left end of the image display area 1a, and no blue streak is seen at the right end.

[Embodiment 2]
In the first embodiment, the present invention is applied to a transflective electro-optical device. However, the present invention may be applied to a reflective electro-optical device.

  FIG. 7 is a cross-sectional view of the sub-pixels arranged in the vertical direction at the periphery of the image display region and other sub-pixels in the reflective electro-optical device of this embodiment. Since the basic configuration of the electro-optical device of this embodiment is the same as that of Embodiment 1, common portions are denoted by the same reference numerals and description thereof is omitted.

  In FIG. 7, the counter substrate 30 of the electro-optical device 100 according to the present embodiment has a black matrix 38 made of a light-shielding film and color filter layers 342R, 342G, and 342B on the light reflecting layer 33 as in the first embodiment. Is formed. However, the electro-optical device 100 of this embodiment is a reflective liquid crystal device, and the light reflection layer 33 is not formed with a light transmission window that enables display in a transmission mode.

  Also in such an electro-optical device 100, in this embodiment, all the sub-pixels 11 are formed at the same pitch and the same size, but at the periphery 1c of the image display region 1a (the inner periphery 55 of the parting-off 50). For the sub-pixels 11 ′ arranged along the vertical direction, the ratio of the area (aperture ratio) from which the display light is emitted to the pixel area is made smaller than that of the other sub-pixels 11, so that the amount of emitted display light is reduced. It is low.

  In this configuration, in the electro-optical device 100 according to the present embodiment, as in the first embodiment, each sub-pixel 11 is surrounded by the black matrix 38 or the black matrix 38 and the parting line 50 each including a light shielding film. However, for the sub-pixels 11 ′ arranged in the vertical direction along the peripheral edge 1 c of the image display region 1 a, the black matrix 38 and the part extending in the vertical direction of the parting 50 are thickened, and the black matrix 38 and The area of the region surrounded by the parting line 50 is narrowed. Therefore, the pixel 11 ′ has a smaller aperture ratio and a lower amount of display light emission than the other sub-pixels 11. Therefore, when white display is performed in the image display region 1a in the reflection mode, the color light emitted from the sub-pixels 11 'arranged in the vertical direction along the peripheral edge 1c of the image display region 1a is transmitted from the adjacent sub-pixels 11. Even if it is not sufficiently combined with the emitted colored light, it does not stand out as a streak.

[Embodiment 3]
In the first embodiment, the present invention is applied to a transflective electro-optical device. However, the present invention may be applied to a transmissive electro-optical device.

  FIG. 8 is a cross-sectional view of the sub-pixels arranged in the vertical direction at the periphery of the image display region and other pixels in the transmissive electro-optical device of this embodiment. Since the basic configuration of the electro-optical device of this embodiment is the same as that of Embodiment 1, common portions are denoted by the same reference numerals and description thereof is omitted.

  In FIG. 8, on the counter substrate 30 of the electro-optical device 100 of the present embodiment, a black matrix 38 made of a light shielding film and color filter layers 341R, 341G, and 341B are formed as in the first embodiment. However, the electro-optical device 100 of the present embodiment is a transmissive liquid crystal device, and no light reflection layer is formed.

  In the electro-optical device 100 as well, in this embodiment, all the sub-pixels 11 are formed at the same pitch and the same size, but the sub-pixels are arranged along the vertical direction at the peripheral edge 1c of the image display region 1a. For 11 ', the ratio of the area from which the display light is emitted to the pixel area (aperture ratio) is made smaller than that of the other sub-pixels 11, and the amount of light emitted from the display light is lowered.

  In such a configuration, in the electro-optical device 100, each sub-pixel 11 is surrounded by the black matrix 38 or the black matrix 38 and the parting line 50, each of which is made of a light shielding film. For the sub-pixels 11 ′ arranged in the vertical direction at the peripheral edge 1 c of 1 a (the inner peripheral edge 55 of the parting-off 50), the black matrix 38 and the part extending in the vertical direction of the parting-off 50 are thickened so The area surrounded by 50 is narrowed. Therefore, the sub-pixel 11 ′ has a smaller aperture ratio and a lower emission amount of display light than the other sub-pixels 11. Therefore, when white display is performed in the image display region 1a in the transmissive mode, the color light emitted from the sub-pixels 11 ′ arranged in the vertical direction along the peripheral edge 1c of the image display region 1a is transmitted from the adjacent sub-pixels 11. Even if it is not sufficiently combined with the emitted colored light, it does not stand out as a streak.

[Other embodiments]
In the above-described embodiment, in the electro-optical device 100 in which the color filters are arranged in stripes, the subpixels 11 ′ arranged in the vertical direction at the periphery 1 c of the image display region 1 a are compared with the other subpixels 11 with respect to the pixel area. The ratio of the area from which display light is emitted (aperture ratio) is reduced to reduce the amount of light emitted from the display light. However, if necessary, the amount of light emitted from the display light is also reduced for subpixels arranged in the horizontal direction. May be.

  In the above embodiment, the present invention is applied to the counter substrate 30 in which the color filters are arranged in stripes. However, the present invention may be applied to the counter substrate 30 in which the color filters are arranged in a delta arrangement or a mosaic arrangement.

  Further, the light shielding film (black matrix 38 and parting-off 50) that defines the aperture ratio of the sub-pixels 11 and 11 'may be an electro-optical device formed on either side of a pair of substrates that hold liquid crystal. The present invention can be applied.

  Further, in the above embodiment, the TFD element 40 is used as the active element. However, as shown in FIG. 9, a thin film transistor (TFT) is used as the pixel switching element. The present invention may be applied to an electro-optical device, and further to an electro-optical device such as an electroluminescence display device as shown in FIG. 10, a display device using an electron-emitting device such as a plasma display or a field emission display.

  FIG. 9 is a block diagram schematically illustrating a configuration of an electro-optical device including an active matrix liquid crystal device using a thin film transistor (TFT) as a pixel switching element. FIG. 10 is a block diagram of an active matrix electro-optical device including an electroluminescence element using a charge injection type organic thin film as an electro-optical material.

  As shown in FIG. 9, in the electro-optical device 100b composed of an active matrix liquid crystal device using TFTs as pixel switching elements, a pixel electrode 109b is controlled to each of a plurality of sub-pixels formed in a matrix. A pixel switching TFT 130b is formed, and a data line 106b for supplying an image signal is electrically connected to a source of the TFT 130b. An image signal written to the data line 106b is supplied from the data line driver circuit 102b. Further, the scanning line 131b is electrically connected to the gate of the TFT 130b, and a scanning signal is supplied to the scanning line 131b in a pulsed manner from the scanning line driving circuit 13b at a predetermined timing. The pixel electrode 109b is electrically connected to the drain of the TFT 130b. By turning on the TFT 130b, which is a switching element, for a certain period, an image signal supplied from the data line 6b is applied to each sub-pixel in a predetermined state. Write at the timing. The sub-image signal of a predetermined level written in the liquid crystal through the pixel electrode 109b in this way is held for a certain period with the counter electrode formed on the counter substrate (not shown).

  Here, in order to prevent the held sub-image signal from leaking, a storage capacitor 170b (capacitor) may be added in parallel with the liquid crystal capacitor formed between the pixel electrode 109b and the counter electrode. . The storage capacitor 170b holds the voltage of the pixel electrode 109b, for example, for a time that is three orders of magnitude longer than the time when the source voltage is applied. As a result, the charge retention characteristics are improved, and an electro-optical device capable of performing display with a high contrast ratio can be realized. As a method for forming the storage capacitor 170b, there is either a case where the storage capacitor 170b is formed between the capacitor line 132b which is a wiring for forming a capacitor or a case where the storage capacitor 170b is formed between the storage line 170b and the preceding scanning line 131b. Also good.

  Even in the electro-optical device 100b configured as described above, a large number of sub-pixels corresponding to the respective colors are arranged in a matrix within the image display region, and thus the present invention may be applied.

  As shown in FIG. 10, an active matrix electro-optical device 100p including an electroluminescence element using a charge injection type organic thin film includes an EL (electroluminescence) element that emits light when a driving current flows through an organic semiconductor film, Alternatively, an active matrix display device that drives and controls a light-emitting element such as an LED (light-emitting diode) element with a TFT, and all of the light-emitting elements used in this type of display device self-emit, and thus do not require a backlight. Also, there are advantages such as less viewing angle dependency.

  In the electro-optical device 100p shown here, a plurality of scanning lines 103p, a plurality of data lines 106p extending in a direction intersecting with the extending direction of the scanning lines 103p, and the data lines 106p are arranged in parallel. A plurality of common power supply lines 123p and subpixels 115p corresponding to the intersections of the data lines 106p and the scanning lines 103p are configured. A data line driving circuit 101p including a shift register, a level shifter, a video line, and an analog switch is configured for the data line 106p. A scanning line driving circuit 104p including a shift register and a level shifter is configured for the scanning line 103p.

  Each of the sub-pixels 115p holds a first TFT 131p to which a scanning signal is supplied to the gate electrode via the scanning line 103p, and an image signal supplied from the data line 106p via the first TFT 131p. The storage capacitor 133p to be connected, the second TFT 132p to which the image signal held by the storage capacitor 133p is supplied to the gate electrode, and the common supply line 123p when electrically connected to the common power supply line 123p via the second TFT 132p. A light emitting element 140p into which a drive current flows from the electric wire 123p is configured.

  Here, the light emitting element 140p has a configuration in which a counter electrode made of a metal film such as a hole injection layer, an organic semiconductor film as an organic electroluminescence material layer, lithium-containing aluminum, or calcium is stacked on the upper side of the pixel electrode. The counter electrode is formed across the plurality of subpixels 115p across the data line 106p and the like.

  Even in the electro-optical device 100b configured as described above, a large number of sub-pixels corresponding to the respective colors are arranged in a matrix within the image display region, and thus the present invention may be applied.

[Example of mounting on electronic devices]
FIG. 11 is a perspective view illustrating a configuration of a mobile phone as an example of an electronic apparatus in which the electro-optical device of this embodiment is mounted.

  In FIG. 11, a mobile phone 1400 includes electro-optical devices 100, 100 b, and 100 p along with a plurality of operation buttons 1402, an earpiece 1404 and a mouthpiece 1406.

  Note that examples of electronic devices on which the electro-optical devices 100, 100b, and 100p of this embodiment can be mounted include mobile phones, liquid crystal televisions, viewfinder type, monitor direct view type video tape recorders, car navigation devices, Examples include electronic notebooks, calculators, word processors, workstations, videophones, POS terminals, and devices equipped with touch panels.

  In the present invention, among the sub-pixels arranged in a matrix in the image display area, the sub-pixels arranged along at least two opposite sides of the periphery of the image display area are compared with the other sub-pixels. Therefore, even if the color light emitted from such a sub-pixel is not sufficiently combined with the color light emitted from the adjacent sub-pixel, it does not stand out as a streak.

1 is a plan view showing an overall configuration of an electro-optical device according to Embodiment 1 of the present invention. FIG. 2 is a block diagram illustrating an electrical configuration of the electro-optical device illustrated in FIG. 1. FIG. 2 is an exploded perspective view illustrating a configuration of the electro-optical device illustrated in FIG. 1. FIG. 2 is an enlarged cross-sectional view showing a part of the electro-optical device shown in FIG. FIG. 2 is a plan view showing a layout for several sub-pixels including a TFD element in the electro-optical device shown in FIG. 1. FIG. 6 is a cross-sectional view taken along line A-A ′ of FIG. 5. 5 is a cross-sectional view of sub-pixels arranged in the vertical direction at the periphery of an image display region, sub-pixels positioned in a frame region, and other pixels in the reflective electro-optical device according to Embodiment 2 of the present invention. FIG. FIG. 6 is a cross-sectional view of sub-pixels arranged in the vertical direction at the periphery of an image display region, sub-pixels positioned in a frame region, and other pixels in a transmissive electro-optical device according to a third embodiment of the present invention. FIG. 2 is a block diagram schematically showing a configuration of an electro-optical device composed of an active matrix liquid crystal device using TFTs as pixel switching elements. 1 is a block diagram of an active matrix display device including an electroluminescence element using a charge injection type organic thin film as an electro-optical material. FIG. 11 is a perspective view illustrating a configuration of a mobile phone as an example of an electronic apparatus equipped with an electro-optical device to which the invention is applied. It is explanatory drawing of the conventional electro-optical apparatus.

Explanation of symbols

100, 100b, 100p electro-optical device, 1a image display area, 11, 11 ′ sub-pixel, 12 liquid crystal layer, 20 element side substrate, 23 pixel electrode, 30 counter substrate, 31 scanning line, 33 light reflecting layer, 36 counter electrode , 38 Black matrix (light shielding film) 40 TFD element (active element), 50 Concavity and convexity forming layer, 330 Light transmission window, 341R, 341G, 341B, 342R, 342G, 342B Color filter layer

Claims (11)

In an electro-optical device in which a large number of sub-pixels corresponding to each color are arranged in a matrix within an image display area,
2. The electro-optical device according to claim 1, wherein sub-pixels arranged along at least two opposite sides of the periphery of the image display area have a lower emission amount of display light than other sub-pixels.   2. The electro-optical device according to claim 1, wherein in the sub-pixels arranged along the two sides, one row corresponds to the same color.   3. The electro-optical device according to claim 1, wherein the plurality of sub-pixels have the same size. In any one of Claims 1 thru | or 3, the circumference | surroundings of all the said many subpixels are surrounded by the light shielding film,
2. The electro-optical device according to claim 1, wherein the sub-pixels arranged along the two sides have a narrower area surrounded by the light-shielding film than the other sub-pixels.   5. The electro-optical device according to claim 4, wherein each of the plurality of sub-pixels includes a light reflection layer for reflection display.   5. The display device according to claim 4, wherein each of the plurality of sub-pixels has a light-reflecting layer for reflective display in which a light-transmissive window for transmissive display is formed, and is transmissively displayed at least in a region overlapping with the light-transmissive window. An electro-optical device having a transparent electrode layer for use.   7. The subpixels arranged along the two sides according to claim 6, wherein an area of the light transmission window is narrower and an area of the light reflection film surrounded by the light shielding film is smaller than other subpixels. An electro-optical device characterized by being narrow.   5. The electro-optical device according to claim 4, wherein each of the plurality of sub-pixels includes a transparent electrode layer for transmissive display.   9. The electro-optical device according to claim 1, wherein each of the plurality of sub-pixels includes a liquid crystal cell for light modulation.   4. The electro-optical device according to claim 1, wherein each of the plurality of sub-pixels includes a light-modulating electroluminescence element.   An electronic apparatus comprising the electro-optical device defined in any one of claims 1 to 10.

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