JP2008281732A - Electro-optical device and electronic equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To suppress, for example, lowering of an aperture ratio of a pixel section, and to heighten precision of detecting a pointing means such as a finger. <P>SOLUTION: The lowering of the aperture ratio of each of sub-pixel sections 72R, 72G, and 72B is circumvented by installing an optical sensor portion 250b so as to be superposed on an aperture 73W of a sub-pixel section 72W arranged for every three sub-pixel sections of 72R, 72G, and 72B. By using a liquid crystal device 1, the size of the region occupied with the optical sensor portion 250b on the TFT array substrate 10 can be reduced to a quarter compared with that for example in the case that the optical sensor portions 250b are installed on the respective sub-pixel sections 72R, 72G, 72B, and 72W. As a result, by using the liquid crystal device 1, an area of a region of the image display region 10a substantially transmitting light can be widened. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

The present invention relates to a technical field of, for example, an electro-optical device having a touch panel function and an electronic apparatus including such an electro-optical device.

In this type of electro-optical device, an optical sensor is arranged for each of a plurality of pixel units, image display using transmitted light that passes through the pixel units, and input of information to the electro-optical device via instruction means such as a finger. An electro-optical device having a so-called touch panel function that can be realized has been proposed. In such an electro-optical device, it is detected by a light receiving element such as an optical sensor that a pointing unit such as a finger or an indicating member has touched the display surface of the liquid crystal device or moved on the display surface. It is possible to input information to.

In an electro-optical device having a touch panel function, in order to prevent a decrease in aperture ratio caused by an optical sensor provided for each pixel unit, light is transmitted to one pixel unit among a plurality of pixel units that transmit each of a plurality of color lights. A display device in which a decrease in aperture ratio is suppressed by arranging a sensor has been proposed (see, for example, Patent Document 1). More specifically, red light (R), green light (
An optical sensor is disposed only in a pixel portion that transmits only red light in G) and blue light (B).

In addition, in an electro-optical device having a touch panel function, a display device that can increase the size of the entire display region by simplifying the configuration of a circuit unit such as a scanning line driving circuit arranged around the display region ( For example, Patent Document 2) and a display device that can reduce the attenuation of incident light by a color filter (for example, refer to Patent Document 3) have been proposed.

JP 2006-522980 A JP-A-2005-134809 JP 2006-317899 A

However, according to the technique disclosed in Patent Document 1, in addition to the necessity of an external device as a light source for making red light incident, it is difficult to increase the detection sensitivity for natural light. There is. According to the technique disclosed in Patent Document 2, it is difficult to improve the aperture ratio in pixel units. According to the technique disclosed in Patent Document 3, the intensity of the light transmitted through the color filter is reduced to about 1/3, and it becomes difficult for the optical sensor to increase the detection sensitivity for detecting incident light. There is also.

In addition, when the luminance of the backlight is increased for the purpose of compensating for the decrease in the aperture ratio of the pixel portion caused by providing the optical sensor, there is a problem that power consumption by the backlight increases.

Therefore, the present invention has been made in view of the above-mentioned problems and the like. For example, it is possible to accurately detect a pointing means such as a finger by detecting natural light, and increase the power consumption by the backlight. It is an object to provide a non-electro-optical device and an electronic apparatus including such an electro-optical device.

In order to solve the above problems, an electro-optical device according to the present invention is formed in a substrate and a display area on the substrate, and is included in incident light incident from a display surface indicated by an instruction unit on the substrate. A plurality of first pixel portions that transmit each of a plurality of different types of color light,
A second pixel portion that is formed in the display region and transmits at least two of the plurality of types of color light; and a photosensor provided on the substrate so as to overlap the second pixel portion. A part.

According to the electro-optical device of the invention, the substrate is a transparent substrate on which pixel switching elements such as TFTs are formed.

The plurality of first pixel portions are formed in a display region on the substrate, and transmit each of a plurality of different types of color light included in incident light incident from a display surface indicated by the indication unit on the substrate. Accordingly, each of the plurality of first pixel portions can perform color display by transmitting a predetermined color light from the light source light emitted from a separately provided light source.

For example, each of the plurality of first pixel units includes a color filter that can transmit only the color light that should be transmitted by each of the first pixel units out of the natural light incident on the display surface.
Accordingly, the color light transmitted through the first pixel portion has a light intensity that is lower than the light intensity of incident light such as natural light incident on the display surface.

The second pixel portion is formed in the display region, and transmits at least two types of color light among the plurality of pixel portions. Therefore, the incident light transmitted through the second pixel unit enters the photosensor unit while maintaining a higher light intensity than the incident light transmitted through the first pixel unit.

The optical sensor unit is provided on the substrate so as to overlap the second pixel unit. According to the electro-optical device according to the aspect of the invention, since the optical sensor unit is arranged only in the second pixel unit among the first pixel unit and the second pixel unit, the aperture ratio of the first pixel unit may be reduced. The display performance of the electro-optical device is not deteriorated. The “aperture ratio” is the display area on the substrate.
The ratio of the area | region where light is not blocked | interrupted with the non-transparent element with respect to the size of a 1st pixel part.

In addition, according to the electro-optical device according to the aspect of the invention, the incident light transmitted through the second pixel unit is incident on the optical sensor unit while maintaining a higher light intensity than the incident light incident on the first pixel unit. The optical sensor unit can accurately detect the light reflected by the pointing means such as a finger on the display surface.

Therefore, according to the electro-optical device according to the present invention, it is possible to increase the detection capability of incident light incident from the display surface while suppressing a decrease in the aperture ratio caused by arranging the optical sensor unit in each pixel unit. It is.

In one aspect of the electro-optical device according to the invention, the plurality of types of color light are red light, green light, and blue light, and the second pixel unit includes the red light, the green light, and the blue light. You may permeate | transmit at least 2 or more types of color light among light.

According to this aspect, full-color color display using red light, green light, and blue light is possible. In addition, since the second pixel unit transmits two or more types of color light among these three types of color light, for example, the first pixel unit transmits only one type of color light among incident light such as natural light incident from the display surface. Compared with the case where an optical sensor unit is arranged in the pixel unit, the light intensity of incident light incident on the optical sensor unit can be increased, and the detection accuracy for detecting a pointing means such as a finger can be increased.

In this aspect, the plurality of first pixel portions are three first pixel portions that transmit the red light, the green light, and the blue light, respectively, and the second pixel portion includes the three first pixels. It may be provided for each pixel portion and may transmit white light.

According to this aspect, for example, the intensity of the incident light transmitted through the first pixel unit having the color filter is reduced to about ３ compared with that before the incident. However, in the second pixel portion, incident light incident from the display surface enters the optical sensor portion as it is without passing through the color filter. Accordingly, since natural light reflected by the pointing means such as a finger is directly incident on the optical sensor unit as incident light, the detection accuracy of detecting the pointing means by the optical sensor unit can be increased.

Since the electronic apparatus according to the present invention includes the above-described electro-optical device according to the present invention, the mobile phone, the electronic notebook, the word processor, and the monitor having a touch panel function and capable of high-quality display. Direct-view video tape recorder, workstation, video phone,
Various electronic devices such as POS terminals can be realized. In addition, as an electronic apparatus according to the present invention, for example, an electrophoretic device such as electronic paper can be realized.

  Such an operation and other advantages of the present invention will become apparent from the embodiments described below.

Hereinafter, embodiments of an electro-optical device and an electronic apparatus according to the present invention will be described with reference to the drawings. In the present embodiment, a liquid crystal device is cited as an embodiment of the electro-optical device according to the invention.

<1: Liquid crystal device>
<1-1: Overall Configuration of Liquid Crystal Device>
First, the overall configuration of the liquid crystal device 1 according to the present embodiment will be described with reference to FIGS. 1 and 2. FIG. 1 is a plan view of the liquid crystal device 1 as viewed from the counter substrate side together with the components formed on the TFT array substrate, and FIG. 2 is a cross-sectional view taken along the line II-II ′ of FIG. The liquid crystal device 1 according to the present embodiment is driven by a TFT active matrix driving method with a built-in driving circuit.

1 and 2, in the liquid crystal device 1, a TFT array substrate 10, which is an example of the “substrate” of the present invention, and a counter substrate 20 are disposed to face each other. TFT array substrate 10 and counter substrate 2
A liquid crystal layer 50 is sealed between the TFT array substrate 10 and the counter substrate 20, and the TFT array substrate 10 and the counter substrate 20 are provided in a seal region located around the image display region 10a, which is a display region provided with a plurality of pixel portions. They are bonded to each other by the sealing material 52 formed.

The sealing material 52 is made of, for example, an ultraviolet curable resin, a thermosetting resin, or the like for bonding the two substrates, and after being applied on the TFT array substrate 10 in the manufacturing process,
It is cured by heating or the like. In the sealing material 52, a gap material such as glass fiber or glass beads for dispersing the distance between the TFT array substrate 10 and the counter substrate 20 (inter-substrate gap) to a predetermined value is dispersed.

A light-shielding frame light-shielding film 53 that defines the frame area of the image display area 10a is provided on the counter substrate 20 side in parallel with the inside of the seal area where the sealing material 52 is disposed. However, part or all of the frame light shielding film 53 may be provided as a built-in light shielding film on the TFT array substrate 10 side. There is a peripheral area located around the image display area 10a. In other words, particularly in the present embodiment, when viewed from the center of the TFT array substrate 10, the distance from the frame light shielding film 53 is defined as the peripheral region.

The liquid crystal device 1 includes a data line driving circuit 101, a scanning line driving circuit 104, and a sensor scanning circuit 204. In the peripheral region, the data line driving circuit 101 and the external circuit connection terminal 102 are provided along one side of the TFT array substrate 10 in a region located outside the sealing region where the sealing material 52 is disposed. The scanning line driving circuit 104 is provided along one of the two sides adjacent to the one side so as to be covered by the frame light shielding film 53. The sensor scanning circuit 204 is provided so as to face the scanning line driving circuit 104 through the image display region 10a. The scanning line driving circuit 104 and the sensor scanning circuit 204 are electrically connected to each other by a plurality of wirings 105 formed so as to be covered by the frame light shielding film 53.

In the peripheral region on the TFT array substrate 10, a control circuit unit 201 including a circuit unit for processing an output signal output from an optical sensor unit (to be described later) and controlling a diaphragm amount of the light amount by the light amount adjusting unit is formed. Yes. The control circuit unit 201 or a received light signal processing circuit unit 215 which is a part of the function to be described later is preferably formed integrally with the data line driving circuit 101 in order to simplify the connection to the image display region 10a.

The external circuit connection terminal 102 is connected to a connection terminal provided on a flexible (FPC) substrate 200 which is an example of a connection means for electrically connecting the external circuit and the liquid crystal device 1. The backlight included in the liquid crystal device 1 is controlled by a backlight control circuit 202 configured by an IC circuit or the like mounted on the FPC 200.

Vertical conductive members 106 functioning as vertical conductive terminals between the TFT array substrate 10 and the counter substrate 20 are disposed at the four corners of the counter substrate 20. On the other hand, the TFT array substrate 10 is provided with vertical conduction terminals in a region facing these corner portions. Thus, electrical conduction can be established between the TFT array substrate 10 and the counter substrate 20.

In FIG. 2, on the TFT array substrate 10, TFTs for pixel switching, scanning lines,
An alignment film 16 (see FIG. 6) is formed on the pixel electrode 9a after the wiring such as the data line is formed. On the other hand, on the counter substrate 20, in addition to the counter electrode 21, a lattice-shaped or striped light-shielding film 23 and an alignment film 22 (see FIG. 6) are formed on the uppermost layer. Liquid crystal layer 5
For example, 0 is made of liquid crystal mixed with one or several types of nematic liquid crystal, and takes a predetermined alignment state between the pair of alignment films.

The liquid crystal device 1 includes a second polarizing plate 302, a third polarizing plate 303, and a backlight 206. The second polarizing plate 302 is disposed on the counter substrate 20. The third polarizing plate 303 is
On the lower side of the TFT array substrate 10 in the figure, the backlight 206 and the TFT array substrate 10
Arranged between. During the operation, the liquid crystal device 1 displays an image on the display surface 302 s located on the side of the second polarizing plate 302 that does not face the counter substrate 20.

The data line driving circuit 1 is provided on the TFT array substrate 10 shown in FIGS.
01, a sampling circuit that samples the image signal on the image signal line and supplies it to the data line in addition to the circuit unit such as the scanning line driving circuit 104, and a precharge signal having a predetermined voltage level is preceded by the image signal on the plurality of data lines In addition, a precharge circuit to be supplied, an inspection circuit for inspecting the quality, defects, and the like of the electro-optical device during manufacture or at the time of shipment may be formed.

<1-2: Circuit Configuration of Liquid Crystal Device>
Next, the circuit configuration of the liquid crystal device 1 will be described with reference to FIG. FIG. 3 is a block diagram showing a main circuit configuration of the liquid crystal device 1.

In FIG. 3, the liquid crystal device 1 includes a data line driving circuit unit 101, a scanning line driving circuit unit 104,
A sensor sensitivity adjustment circuit unit 205, a sensor scanning circuit 204, a received light signal processing circuit 215, an image processing circuit unit 216, and a display unit 110 are provided. The control circuit unit 201 shown in FIG.
The sensor sensitivity adjustment circuit unit 205, the received light signal processing circuit unit 215, and the image processing circuit unit 216 are included. The sensor sensitivity adjustment circuit unit 205, the received light signal processing circuit unit 215, and the image processing circuit unit 216 constitute a control circuit unit 201.

The display unit 110 is composed of a plurality of pixel units arranged in a matrix as will be described later. The data line driving circuit 101 and the scanning line driving circuit 104 supply a scanning signal and an image signal to the display unit 110 at a predetermined timing, and drive each pixel unit.

The sensor scanning circuit unit 204 supplies a signal for operating an optical sensor unit described later to each optical sensor unit when the liquid crystal device 1 is operating. The received light signal processing circuit unit 215 processes the received light signal output from the optical sensor unit provided in the image display area 10 a on the TFT array substrate 10.

The image processing circuit unit 216 processes image data configured based on the processed signal supplied from the received light signal processing circuit unit 215. When the image processing circuit unit 216 can identify an instruction unit such as a finger indicating the display surface 302 s from the image specified based on the light reception signals of the plurality of optical sensor units included in the display unit 110, The display surface 302 in the image display area 10a
The position of the instruction means for instructing s is specified, and the position of the specified instruction means is output to the external circuit unit as touch position information. On the other hand, when the position of the instruction unit cannot be specified, the image processing circuit unit 216 supplies a correction signal for correcting the sensitivity of the optical sensor unit to the data line driving circuit 101.

<1-3: Configuration of Pixel Unit>
Next, the configuration of the pixel portion of the liquid crystal device 1 will be described in detail with reference to FIGS. FIG. 4 is an equivalent circuit of various elements, wirings, and the like in a plurality of pixels formed in a matrix that forms the image display region 10a of the liquid crystal device 1. FIG. 5 is a schematic plan view of the pixel portion. 6 is a cross-sectional view taken along the line VI-VI ′ of FIG. In FIG. 4, the photodetection circuit unit is shown together with the circuit configuration of a portion that substantially contributes to image display among a plurality of pixel units arranged in a matrix on the TFT array substrate 10. In FIGS. 5 and 6, in order to make each layer and each member have a size that can be recognized on the drawing, the scale is different for each layer and each member.

The circuit configuration of the pixel unit 72 will be described with reference to FIG. In FIG. 4, each of the plurality of pixel portions 72 formed in a matrix forming the image display region 10 a of the liquid crystal device 1 includes a sub pixel portion 72 </ b> R that displays red, a sub pixel portion 72 </ b> G that displays green, and a blue color. It includes a sub-pixel unit 72B for displaying and a sub-pixel unit 72W for displaying white, and is electrically connected to each of the plurality of light detection circuit units 250 formed in the image display region 10a. Therefore, the liquid crystal device 1 is a display device that can display a color image. The sub-pixel unit 72
Each of R, the sub-pixel unit 72G, and the sub-pixel unit 72B is an example of the “first pixel unit” in the present invention, and the sub-pixel unit 72W is an example of the “second pixel unit” in the present invention.

Each of the sub-pixel portions 72R, 72G, 72B and 72W includes a pixel electrode 9a, a TFT 30,
And a liquid crystal element 50a.

The TFT 30 is electrically connected to the pixel electrode 9a, and performs switching control of the pixel electrode 9a when the liquid crystal device 1 operates. The data line 6a to which the image signal is supplied is electrically connected to the source of the TFT 30. Image signals S1, S2,... To be written to the data line 6a
Sn may be supplied line-sequentially in this order, or may be supplied for each group to a plurality of adjacent data lines 6a.

The scanning line 3a is electrically connected to the gate of the TFT 30, and the liquid crystal device 1 sequentially applies the scanning signals G1, G2,..., Gm to the scanning line 3a in a pulse sequence in this order at a predetermined timing. It is comprised so that it may apply. The pixel electrode 9a is electrically connected to the drain of the TFT 30, and the image signal S1, S2,... Supplied from the data line 6a is closed by closing the switch of the TFT 30 serving as a switching element for a certain period. Sn is written at a predetermined timing. Image signals S1, S2,..., Sn written to the liquid crystal via the pixel electrode 9a are held for a certain period with the counter electrode formed on the counter substrate.

The liquid crystal contained in the liquid crystal layer 50 modulates light and enables gradation display by changing the orientation and order of the molecular assembly depending on the applied voltage level. In the normally white mode, the transmittance for incident light decreases according to the voltage applied in units of each sub-pixel unit. In the normally black mode, the voltage applied in units of each sub-pixel unit. Accordingly, the transmittance for incident light is increased, and light having a contrast corresponding to an image signal is emitted from the liquid crystal device 1 as a whole. The storage capacitor 70 is added in parallel with the liquid crystal element 50a formed between the pixel electrode 9a and the counter electrode in order to prevent the image signal from leaking. The capacitor electrode line 300 is a fixed potential side electrode of the pair of electrodes of the storage capacitor 70.

  Next, a specific configuration of the pixel portion will be described with reference to FIGS.

In FIG. 5, the pixel unit 72 includes four sub-pixel units 72R and 7 arranged along the X direction.
2G, 72B and 72W, and a light detection circuit unit 250.

Each of the sub-pixel portions 72R, 72G, 72B and 72W has openings 73R, 73G, 73
Each of B and 73W. During the operation of the liquid crystal device 1, the openings 73R and 73R are provided.
Each of G, 73B, and 73W emits red light, green light, blue light, and white light, so that the liquid crystal device 1 can display a color image. In addition, the sub-pixel unit 72
Each of R, 72G, 72B and 72W has a TFT 30 for switching each sub-pixel portion.

In FIG. 6, the liquid crystal device 1 includes light shielding films 11 and 153, three types of color filters 154R, 154G, and 154B embedded in the planarizing film 20a, a liquid crystal layer 50, and an optical sensor unit 25.
0b, a backlight 206, a first polarizing plate 301, a second polarizing plate 302, and a third polarizing plate.

The backlight 206 includes a light guide plate 206a and a display light source 206b, and is disposed below the TFT array substrate 10 in the drawing.

The display light source 206b generates display light L1 for displaying an image in the image display area 10a. The display light L1 is visible light, and is modulated by the liquid crystal layer 50 in accordance with driving of each sub-pixel unit.

The light guide plate 206a is made of, for example, an acrylic resin that can transmit the display light L1, and guides the display light L1 to the image display region 10a. The liquid crystal device 1 uses the display light L1 to display an image, and uses the display light L1 and external light to detect an instruction means such as a finger that indicates the display surface 302s.

Each of the first polarizing plate 301 and the second polarizing layer 302 is disposed on each side of the liquid crystal layer 50 along the vertical direction in the drawing. Each of the first polarizing layer 301 and the second polarizing layer 302 is arranged in crossed Nicols so that the respective optical axes intersect each other.

The third polarizing layer 303 has an optical axis extending along the optical axis of the first polarizing layer 301, and the TFT array substrate 1 as viewed from the optical sensor unit 250 b covered with the insulating film 42 on the insulating film 41.
It extends so as to overlap the pixel electrode 9a on the 0 side. According to the third polarizing layer 303, the first
Together with the portion of the polarizing layer 301 that overlaps the pixel electrode 9a, the display light L1 incident on each pixel can be reliably polarized.

The second polarizing layer 302 and the third polarizing layer 303 are formed by sandwiching a stretched PVA (polyvinyl alcohol) film with a protective film made of TAC (triacetyl cellulose).

When the liquid crystal device 1 displays an image on the display surface 302s, each of the sub pixel units 72R, 72G, and 72B includes red light, green light, and light source light L1 modulated by the liquid crystal layer 50 in each sub pixel unit. And blue light are transmitted to the display surface 302s side through the color filters 154R, 154G, and 154B, respectively. The sub-pixel unit 72W emits the light source light L1 modulated by the liquid crystal layer 50 to the display surface 302s as it is. Therefore, the liquid crystal device 1 is
An image can be displayed in color by light transmitted through each sub-pixel portion.

Each of the color filters 154R, 154G, and 154B transmits red light, green light, and blue light from the display surface 302s to the liquid crystal layer 50 from the incident light L2 incident from the display surface 302s.
Permeate toward. On the other hand, since no color filter is disposed in the opening 73W, the incident light L2 incident on the display surface 302s is directly incident on the optical sensor 250b.

Here, the light intensity of each of the red light L2R, the green light L2G, and the blue light L2B transmitted through each of the sub-pixel portions 72R, 72G, and 72B is such that the incident light L2 is transmitted through the color filter. The light intensity is about 1/3. Accordingly, the sub-pixel unit 72R is assumed to be
, 72G and 72B, the detection accuracy for detecting the incident light L2, which is natural light reflected by the instruction means, is not sufficient even if the optical sensor units are arranged in each of 72G and 72B. In addition, if the optical sensor unit is arranged for each sub-pixel unit, the opening 73R with respect to the size of the area occupied by each sub-pixel unit
, 73G and 73B, that is, the aperture ratio cannot be increased.

Therefore, in the liquid crystal device 1 according to the present embodiment, the optical sensor unit 250b is arranged so as to overlap the opening 73W of the sub pixel unit 72W arranged for each of the three sub pixel units including the sub pixel units 72R, 72G, and 72B. By doing so, it is not necessary to reduce the aperture ratio of each of the sub-pixel portions 72R, 72G, and 72B. According to the liquid crystal device 1, for example, the sub-pixel units 72R, 72
Compared with the case where the photosensor portions 250b are arranged in G, 72B, and 72W, the size of the region occupied by the photosensor portions 250b on the TFT array substrate 10 can be reduced to ¼. Therefore, according to the liquid crystal device 1, it is possible to expand the area of the image display region 10a through which light is substantially transmitted.

Next, the configuration of the photodetection circuit unit 250 will be described in detail. The photodetection circuit unit 250 includes a photosensor drive unit 250a and a photosensor unit 250b. The optical sensor portion 250b is disposed on the TFT array substrate 10 so as to overlap the opening portion 73W so that incident light incident on the opening portion 73W can be received. Incident light L2 that has entered the sub-pixel unit 72W enters the optical sensor unit 250b in a state where the light intensity is not reduced by the color filter. That is,
The incident light L2 incident on the sub-pixel unit 72W maintains a high light intensity compared to the light intensity of each of the three color light beams transmitted through the sub-pixel units 72R, 72G, and 72B, and the optical sensor unit 250b.
Is incident on. Therefore, the optical sensor unit 250b can accurately detect the light reflected by the pointing means such as a finger on the display surface 302s.

Therefore, according to the liquid crystal device 1, it is possible to increase the detection ability of the optical sensor unit 250b to detect the incident light L2 while suppressing a decrease in the aperture ratio in the sub-pixel unit.

In the present embodiment, the sub-pixel portions 72R, 72G, and 7 that can transmit each of the three color lights.
The case where the sub-pixel unit 72W is formed on the TFT array substrate 10 every 2B has been described as an example. However, according to the electro-optical device according to the present invention, for example, the sub-light that transmits each of two or more colors is transmitted. The detection of detecting the indication means and the effect of suppressing the decrease in the aperture ratio by arranging the photo sensor unit so as to overlap the sub-pixel unit that transmits two or more colors of light for each set of pixel units It is possible to obtain both effects of improving the ability.

<2: Electronic equipment>
Next, an embodiment of an electronic apparatus including the above-described liquid crystal device will be described with reference to FIGS.

FIG. 7 is a perspective view of a mobile personal computer to which the liquid crystal device described above is applied. In FIG. 7, a computer 1200 includes a main body 1 having a keyboard 1202.
204 and a liquid crystal display unit 1206 including the liquid crystal device described above. The liquid crystal display unit 1206 is configured by adding a backlight to the back surface of the liquid crystal panel 1005, and has a touch panel function capable of inputting various information accurately.

Next, an example in which the above-described liquid crystal device is applied to a mobile phone will be described. FIG. 8 is a perspective view of a mobile phone which is an example of the electronic apparatus of the present embodiment. In FIG. 8, a mobile phone 1300 includes a liquid crystal device 1005 that adopts a reflective display format and has the same configuration as the above-described liquid crystal device, together with a plurality of operation buttons 1302. According to the mobile phone 1300, high-quality image display is possible, and information can be accurately input via the display surface by an instruction unit such as a finger.

It is a top view of the liquid crystal device concerning this embodiment. It is II-II 'sectional drawing of FIG. It is the block diagram which showed the main circuit structures of the liquid crystal device which concerns on this embodiment. 3 is an equivalent circuit in an image display region of the liquid crystal device according to the present embodiment. FIG. 4 is a schematic plan view of a pixel unit included in the liquid crystal device according to the embodiment. It is VI-VI 'sectional drawing of FIG. It is the perspective view which showed an example of the electronic device which concerns on this embodiment. It is the perspective view which showed the other example of the electronic device which concerns on this embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Liquid crystal device, 10 ... TFT array substrate, 20 ... Counter substrate, 50 ... Liquid crystal layer, 72 ... Pixel part, 250 ... Photodetection circuit part, 250a ... Light Sensor drive,
250b ... Optical sensor unit

Claims (4)

A substrate,
A plurality of first pixel portions that are formed in a display area on the substrate and transmit each of a plurality of different types of color light included in incident light incident from a display surface indicated by an instruction unit on the substrate; ,
A second pixel portion that is formed in the display region and transmits at least two types of color light among the plurality of types of color light;
An electro-optical device comprising: an optical sensor unit provided on the substrate so as to overlap the second pixel unit. The plurality of types of color light are red light, green light, and blue light,
2. The electro-optical device according to claim 1, wherein the second pixel portion transmits at least two kinds of color light among the red light, the green light, and the blue light. The plurality of first pixel portions are three first pixel portions that transmit each of the red light, the green light, and the blue light, and the second pixel portion is provided for each of the three first pixel portions. The electro-optical device according to claim 2, wherein the electro-optical device is provided to transmit white light. An electronic apparatus comprising the electro-optical device according to any one of claims 1 to 3.

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