JP2009116215A - Liquid crystal device and electronic apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce display defects such as sticking of liquid crystal and flickering in a reflection type liquid crystal device, for example. <P>SOLUTION: Since a pixel electrode 9a and a counter electrode 21 are formed using the same material (ITO), contact potentials generated between the pixel electrode 9a and counter electrode 21, and the liquid crystal are equal to each other and then display defects such as sticking of the liquid crystal and the flickering can be reduced. Additionally, corrosion of the pixel electrode 9a due to a difference in contact potential can be reduced. Further, a decrease in response speed of the liquid crystal and a decrease in reliability due to deterioration of the pixel electrode 9a can be suppressed. Furthermore, the capacity value of a holding capacitor 70 can be set large, so display performance can be more enhanced. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a technical field of a liquid crystal device such as a reflective liquid crystal device and an electronic apparatus such as a projector including such a liquid crystal device.

  In a transmissive liquid crystal device which is an example of a liquid crystal device, a desired image is displayed in an image display region by modulating light source light emitted from a light source with liquid crystal. More specifically, the liquid crystal sandwiched between the transparent pixel electrode and the counter electrode is driven according to the voltage applied between these electrodes, thereby modulating the light and changing the light transmittance. The brightness is adjusted. In such a liquid crystal device, a storage capacitor for holding the potential of the pixel electrode is provided so as to avoid an opening region of the pixel region, that is, a region surrounded by an opaque wiring or a light shielding film. For this reason, in the transmissive liquid crystal device, even if an attempt is made to increase the size of the storage capacitor for the purpose of increasing the capacitance value of the storage capacitor, the opening region is narrowed, and the luminance of the image display region is reduced. Therefore, in the transmissive liquid crystal device, the capacity value of the storage capacitor is limited in order to maintain the luminance of the image display area.

  On the other hand, in a reflective liquid crystal device that displays an image in an image display area by reflecting light incident on the pixel area at the pixel electrode, the pixel electrode functions as a reflective film that reflects light. A storage capacitor can be provided so as to overlap with the pixel electrode. Therefore, in the reflection type liquid crystal device, it is possible to provide a storage capacitor having substantially the same size as the pixel electrode in a plan view, and the capacitance value of the storage capacitor can be set larger than that of the transmission type liquid crystal device. (For example, refer to Patent Documents 1 to 5.)

JP 11-52429 A JP 2000-315734 A JP 2004-12670 A JP 2004-12795 A JP 2006-350148 A

  However, in the reflective liquid crystal device, the counter electrode disposed so as to face the pixel electrode that functions as a light reflecting film is usually configured using a transparent conductive material such as ITO and functions as a light reflecting film. Thus, the pixel electrode is made of a material different from that of the pixel electrode made of a metal film such as aluminum. Therefore, various problems occur due to differences in the constituent materials of the pixel electrode and the counter electrode. More specifically, for example, the contact potential generated between the liquid crystal and each of the pixel electrode formed of a metal film and the counter electrode formed of a transparent conductive material such as ITO is different in the constituent material of each electrode. Accordingly, they are different from each other, causing problems such as liquid crystal burn-in and flickering. In addition, due to the difference in contact potential at which the pixel electrode and the counter electrode are in contact with the liquid crystal, there is a problem that the pixel electrode made of a metal film is corroded. Further, due to the deterioration of the pixel electrode, there arises a problem that the response speed of the liquid crystal is lowered and the reliability is lowered. In order to solve these problems, for example, when a protective film for protecting the pixel electrode is formed, it is necessary to increase the driving voltage of the liquid crystal as much as the protective film is formed. This increases the fixed potential supplied to the electrodes (increases the offset voltage) and complicates the circuit configuration.

  Therefore, the present invention has been made in view of the above-described problems and the like, for example, a liquid crystal device capable of solving the problems caused by the difference in constituent materials of the pixel electrode and the counter electrode in the reflective liquid crystal device, and An object is to provide an electronic device including such a liquid crystal device.

  In order to solve the above problems, a liquid crystal device according to the present invention includes a first substrate, a second substrate arranged to face the first substrate, and a plurality of display regions on the first substrate. A plurality of pixel electrodes made of a transparent conductive material, each formed in a pixel region, and formed on one surface of the second substrate facing the first substrate so as to face the plurality of pixel electrodes A counter electrode made of the transparent conductive material; a liquid crystal layer sandwiched between the first substrate and the second substrate; and the pixel electrode in a lower layer side of the pixel electrode, and the pixel electrode A drive element electrically connected to the first substrate and formed between the drive element and the pixel electrode on the first substrate, and incident on the pixel region from the second substrate side when viewed from the first substrate. The light to be reflected to the second substrate side A conductive reflective film, wherein formed between the pixel electrode and the conductive reflective film and an insulating film.

  According to the liquid crystal device of the present invention, the second substrate is a transparent substrate such as a glass substrate, for example, and is made of a substrate material that does not block light incident on each pixel region from the second substrate side.

  Each of the plurality of pixel electrodes is formed using a transparent conductive material such as ITO, and is formed in a plurality of pixel regions arranged in a matrix, for example, so as to form a display region on the first substrate. Yes.

  For example, the counter electrode is formed on the second substrate so as to face the pixel electrode through the alignment film and the liquid crystal. The counter electrode is formed by using the same transparent conductive material such as ITO as the pixel electrode. Therefore, according to the liquid crystal device of the present invention, since the pixel electrode and the counter electrode are configured using the same material, the contact potential generated between the pixel electrode and the counter electrode and the liquid crystal is mutually reduced. It is possible to reduce display defects such as image sticking and flicker. In addition, corrosion of the pixel electrode can be reduced. Further, it is possible to suppress a decrease in the response speed of the liquid crystal and a decrease in the reliability caused by the deterioration of the pixel electrode. Therefore, it is not necessary to form a protective film for protecting the pixel electrode, and an increase in power consumption caused by the formation of the protective film, an increase in the fixed potential supplied to the counter electrode (an increase in offset voltage), and a circuit configuration There is no complication.

  The drive element is, for example, a transistor element that operates as a pixel switching element. For example, the image signal supplied to the data line according to the operation of the data line drive circuit and the scan line drive circuit formed on the first substrate. Is supplied from the data line to the pixel electrode in response to the supply of the scanning signal.

  The conductive reflective film is, for example, a metal film such as aluminum or silver, and is formed between the driving element and the pixel electrode on the first substrate. The conductive reflective film is formed on the second substrate as viewed from the first substrate. Light incident on the pixel region from the side is reflected to the second substrate side. A liquid crystal element modulates the light reflected by such a conductive reflective film, so that a desired image can be displayed in the display area. Note that such a conductive reflective film can be formed in a size equivalent to or larger than that of the pixel electrode in plan view, and can increase the storage capacity as will be described later. Become.

  The insulating film extends between the pixel electrode and the conductive reflective film so as to form a dielectric film of a storage capacitor having the pixel electrode and the conductive reflective film as a pair of capacitive electrodes. Therefore, according to the liquid crystal device of the present invention, it is possible to set the capacitance value of the storage capacitor relatively larger than the storage capacitor provided in the transmissive liquid crystal device, and to hold the potential of the pixel electrode. Performance is enhanced. Therefore, according to the liquid crystal device according to the present invention, the display performance is improved as compared with the transmissive liquid crystal device.

  Therefore, according to the liquid crystal device according to the present invention, various problems caused by different constituent materials of the pixel electrode and the counter electrode can be solved in a lump, and the potential holding characteristics of the pixel electrode can be improved. It is also possible to improve display performance.

  In one aspect of the liquid crystal device according to the present invention, the conductive reflective film may extend over the plurality of pixel regions.

  According to this aspect, for example, the conductive reflective film is supplied with the same potential as the fixed potential supplied to the counter electrode. In addition, since the counter electrode is formed so as to overlap the entire display region, for example, by forming the conductive reflective film so as to overlap the entire display region, a difference in size between the counter electrode and the conductive reflective film can be achieved. It is possible to reduce the occurrence of a difference in potential between the counter electrode and the conductive reflective film due to the above. Therefore, the potential of the pixel electrode can be held by the storage capacitor using the pixel electrode and the conductive reflective film as a pair of capacitor electrodes, and the display performance of the liquid crystal device can be improved.

  In another aspect of the liquid crystal device according to the present invention, the pixel electrode and the drive element are connected to each other via a connection portion formed in the opening. It may be electrically connected.

  According to this aspect, the pixel electrode and the driving element are electrically connected to each other via a connection portion such as a contact hole formed in the opening, so that the conductive reflective film overlapping the display region is formed. A reduction in the area of the overlapping portion can be suppressed as much as possible. In addition, since a driving element such as a transistor element provided on the lower layer side can be illuminated by the conductive reflective film, it is possible to suppress a decrease in display performance due to light leakage current.

  In order to solve the above problems, an electronic device according to the present invention includes the above-described liquid crystal device of the present invention.

  According to the electronic apparatus according to the present invention, since the liquid crystal device according to the present invention described above is included, a projection display device such as a front projector or a rear projector capable of high-quality display, a mobile phone, and an electronic notebook. It is possible to realize various electronic devices such as a word processor, a viewfinder type or a monitor direct-view type display device, or a video tape recorder, a workstation, a videophone, a POS terminal, a touch panel. 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 a liquid crystal device and an electronic apparatus according to the present invention will be described with reference to the drawings.

  First, an overall configuration of a liquid crystal device 1 according to an embodiment of the liquid crystal device according to the present invention will be described with reference to FIGS. 1 and 2. FIG. 1 shows a TFT array substrate 10 as an example of the “first substrate” of the present invention, together with the components formed thereon, as viewed from the counter substrate side as an example of the “second substrate” of the present invention. FIG. 2 is a sectional view taken along the line II-II ′ of FIG. The liquid crystal device 1 according to the present embodiment is a reflective liquid crystal device that 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 and a counter substrate 20 are arranged to face each other. 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 typical examples of the “display region” of the present invention configured by a plurality of pixel regions. They are bonded to each other by a sealing material 52 provided in a sealing area located around a certain image display area 10a.

  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 is applied on the TFT array substrate 10 in the manufacturing process and then cured by ultraviolet irradiation, heating, or the like. It is. In the sealing material 52, a gap material such as glass fiber or glass beads for dispersing the distance (inter-substrate gap) between the TFT array substrate 10 and the counter substrate 20 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 and a scanning line driving circuit 104. 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 two sides adjacent to the one side so as to be covered with the frame light shielding film 53. The scanning line driving circuit 104 is electrically connected to each other by a plurality of wirings 105 formed so as to be covered with the frame light shielding film 53.

  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, an alignment film is formed on the pixel electrode 9a after the pixel switching TFT, the scanning line, the data line and the like are 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 are formed on the uppermost layer portion. The liquid crystal layer 50 is made of, for example, a liquid crystal in which one or several types of nematic liquid crystals are mixed, and takes a predetermined alignment state between the pair of alignment films.

  During the operation, the liquid crystal device 1 reflects incident light incident on the liquid crystal layer 50 from the counter substrate 20 side, which is the upper side in the figure, to the liquid crystal layer 50 toward the counter substrate 20 side by the pixel electrode 9a, and displays an image. .

  In addition to the data line drive circuit 101, the scanning line drive circuit 104 and the like, the image signal on the image signal line is sampled on the TFT array substrate 10 shown in FIGS. Sampling circuit that supplies lines, precharge circuit that supplies pre-charge signals of a predetermined voltage level to multiple data lines in advance of image signals, inspection of quality, defects, etc. of the electro-optical device during production or shipment An inspection circuit or the like may be formed.

  Next, a circuit configuration in the image display area 10a will be described with reference to FIG. FIG. 3 is a circuit diagram showing a circuit configuration in the image display area of the liquid crystal device according to the present embodiment.

  In FIG. 3, each of the plurality of pixel portions 72 formed in a matrix that forms the image display area 10 a of the liquid crystal device 1 includes a pixel electrode 9 a, a TFT 30 that is an example of the “driving element” of the present invention, and a liquid crystal element. 50a. The TFT 30 is electrically connected to the pixel electrode 9a, performs switching control of the pixel electrode 9a during operation of the liquid crystal device 1, and drives the liquid crystal element 50a according to the control. The data line 6a to which the image signal is supplied is electrically connected to the source of the TFT 30. The image signals S1, S2,..., Sn to be written to the data lines 6a may be supplied line-sequentially in this order, or may be supplied for each group to a plurality of adjacent data lines 6a. May be.

  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 and reflected light is reduced according to the voltage applied in units of each pixel unit. In the normally black mode, the transmittance is applied in units of each pixel unit. The transmittance for incident light and reflected light is increased according to the voltage, and light having a contrast corresponding to the 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. Note that one of the pair of capacitor electrodes included in the storage capacitor 70 is a pixel electrode 9a, and the other is a conductive reflective film described later.

  Next, a specific configuration of the pixel portion of the liquid crystal device 1 according to the present embodiment will be described with reference to FIGS. 4 and 5. 4 is an enlarged plan view showing a pixel portion of the liquid crystal device 1, and FIG. 5 is a cross-sectional view taken along the line VV ′ of FIG. FIG. 4 shows four pixel portions adjacent to each other among a plurality of pixel portions arranged in a matrix so as to constitute the image display region 10a.

  As shown in FIG. 4, the pixel electrodes 9 a provided in the pixel portion 72 are arranged at intervals. The conductive reflective film 73 extends over a plurality of pixel regions. The opening 90 formed by partially removing the conductive reflective film 73 is a contact that is an example of the “connecting portion” of the present invention that penetrates the insulating films 43 and 44 described later and the gate insulating film 42. A hole 82 is formed.

  4 and 5, the pixel unit 72 includes a TFT 30 formed on the TFT array substrate 10, a storage capacitor 70, a data line 6, a scanning line 3 a, a pixel electrode 9 a, a conductive reflective film 73, and a pixel electrode. 9 a and an insulating film 44 extending between the conductive reflective film 73.

  The TFT 30 includes a semiconductor layer 1a formed on the base film 41, for example, a low-temperature polysilicon layer, and a portion of the semiconductor layer 1a that overlaps the gate electrode 3a1 becomes a channel region 1a ′, Each of the portions is a source region 1s and a drain region 1d. In the channel region 1a ′, a channel is formed by an electric field from the gate electrode 3a1 electrically connected to the scanning line 3a. The source region 1s is electrically connected to a data line 6a (not shown).

  The gate electrode 3a1 is made of a conductive metal such as a polysilicon film, or a simple metal, an alloy, a metal silicide, a poly, including at least one of metals such as Ti, Cr, W, Ta, Mo, Pd, and Al. It is formed of silicide, a laminate of these, and the like, and is provided on the channel region 1a ′ via the gate insulating film 42 so as not to overlap the source region 1s and the drain region 1d.

  The contact hole 82 is formed so as to penetrate the gate insulating film 42, the insulating film 43, and the insulating film 44, and electrically connects the pixel electrode 9a and the drain region 1d to each other. Therefore, during the operation of the liquid crystal device 1, the TFT 30 is switched from the non-conductive state to the conductive state in accordance with the scanning signal Gi supplied to the gate electrode 3a1, and the potential corresponding to the image signal is transmitted through the TFT 30 and the contact hole 82. It is supplied to the pixel electrode 9a.

  Each of the pixel electrode 9a and the counter electrode 21 is made of a transparent conductive material such as ITO, and alignment films 22 and 24 are formed on the respective surfaces thereof. The liquid crystal layer 50 is sandwiched between the alignment films 22 and 24, and a portion of the liquid crystal layer 50 that overlaps each pixel electrode 9a constitutes a liquid crystal portion of the liquid crystal element 50a. The liquid crystal layer 50 is driven by a voltage applied between the pixel electrode 9 a and the counter electrode 21 during the operation of the liquid crystal device 1. Incident light incident on each pixel region from the counter substrate 20 side is reflected by the conductive reflective film 73, and the reflected light is modulated by the liquid crystal layer 50 and then emitted from the pixel region to the counter substrate 20 side. A desired image is displayed in the image display area 10a by such emitted light.

  Therefore, according to the liquid crystal device 1, since the pixel electrode 9a and the counter electrode 21 are configured by using the same material, the contact potentials generated between the pixel electrode 9a and the counter electrode 21 and the liquid crystal are mutually different. It is possible to reduce display defects such as image sticking and flicker. In addition, it is possible to reduce the corrosion of the pixel electrode 9a due to the difference in contact potential. Further, it is possible to suppress a decrease in the response speed of the liquid crystal and a decrease in the reliability caused by the deterioration of the pixel electrode 9a.

  Therefore, according to the liquid crystal device 1, it is not necessary to form a protective film for protecting the pixel electrode 9 a, an increase in power consumption caused by forming the protective film, and an increase in the fixed potential supplied to the counter electrode 21 ( There is an advantage that the offset voltage is not increased) and the circuit configuration is not complicated.

  The storage capacitor 70 includes a conductive reflective film 73 and a pixel electrode 9a, and an insulating film 44 extending between the conductive reflective film 73 and the pixel electrode 9a.

  The conductive reflective film 73 is electrically connected to a common power source common to the counter electrode 21 via a wiring (not shown). During the operation of the liquid crystal device 1, a potential having the same potential as the fixed potential supplied to the counter electrode 21 is supplied to the conductive reflective film 73. A portion of the insulating film 44 that overlaps the pixel electrode 9 a and the conductive reflective film 73 functions as a dielectric film, and constitutes the storage capacitor 70 together with the pixel electrode 9 a and the conductive reflective film 73.

  Therefore, according to the liquid crystal device 1, since the conductive reflection film 73 that reflects incident light is formed on the lower layer side of the transparent pixel electrode 9a, the conductive reflection film 73 is seen from the pixel electrode 9a in plan view. Even if it is formed large, an area where an image can be substantially displayed in the pixel area is not narrowed. Therefore, according to the liquid crystal device 1, it is possible to set the capacitance value of the storage capacitor relatively larger than the storage capacitor provided in the transmissive liquid crystal device, and by increasing the capacitance value of the storage capacitor 70. The holding performance for holding the potential of the pixel electrode 9a is enhanced. Therefore, according to the liquid crystal device 1, the display performance can be improved as compared with the transmissive liquid crystal device.

  As described above, according to the liquid crystal device 1 according to the present embodiment, various problems caused by different constituent materials of the pixel electrode and the counter electrode can be solved together, and the potential holding characteristic of the pixel electrode can be solved. The display performance can be improved by the improvement.

  In particular, as shown in FIG. 4, in the liquid crystal device 1, since the conductive reflective film 73 extends over the plurality of pixel regions, there is a difference in potential between the counter electrode 21 and the conductive reflective film 73. The occurrence can be reduced.

  More specifically, since the counter electrode 21 is formed so as to overlap the entire display region, the counter electrode 21 and the conductive reflection are formed by forming the conductive reflective film 73 so as to overlap the entire image display region 10a. It is possible to reduce the occurrence of a difference in potential between the counter electrode 21 and the conductive reflective film 73 due to the difference in size of the film 73. During the operation of the liquid crystal device 1, the conductive reflective film 73 is supplied with the same potential as the fixed potential supplied to the counter electrode 21, so that it is applied to the liquid crystal between the pixel electrode 9 a and the counter electrode 21. Charge is stored in the storage capacitor 70 by a voltage equal to the voltage. According to the holding capacitor 70 in which such charges are stored, the potential of the pixel electrode 9a can be held at a potential corresponding to the image signal. Therefore, according to such a storage capacitor 70, the display performance of the liquid crystal device 1 can be improved.

  In addition, according to the liquid crystal device 1, since the pixel electrode 9a and the TFT 30 are electrically connected to each other through the contact hole 82 formed in the opening 90, the conductive reflection overlapping the image display region 10a. A reduction in the area of the overlapping portion of the film 73 can be suppressed as much as possible, and the TFT 30 provided on the lower layer side of the conductive reflective film 73 can be shielded from light. Therefore, the light leakage current generated in the TFT 30 can be reduced, and the deterioration of display performance due to the light leakage current can be suppressed.

  As described above, according to the liquid crystal device 1 according to the present embodiment, various problems that occur when the pixel electrode is formed of a metal film can be solved at once. In addition, the driving voltage of the liquid crystal is increased, the power consumption is increased, and the counter electrode is supplied to the counter electrode as compared with the case where the pixel electrode composed of a metal film different from the counter electrode 21 is protected by the protective film. High-quality image display is possible without increasing the fixed potential (increasing offset voltage) and complicating the circuit configuration.

(Electronics)
Next, a reflection type projector using the above-described liquid crystal device as a light valve will be described with reference to FIG. FIG. 6 is a diagram illustrating a configuration of a reflective projector that is an example of the electronic apparatus according to the present embodiment.

  In FIG. 7, in the projector 400, light (substantially white light) emitted from the light source lamp 200 is split into blue light B, red light R, and green light G by a color separation mirror 201 formed of a cross dichroic mirror. Each light is incident on a polarization beam splitter (PBS) 203 via a mirror 202, and S-polarized light is incident on the reflective liquid crystal light valves 100B, 100R, and 100G for color light modulation by the PBS 203. The incident color light is modulated by each light valve and then emitted from each light valve. In the PBS 203, the S polarization component returned from the reflective liquid crystal light valves 100B, 100R, and 100G is reflected and the P polarization component is transmitted. Accordingly, each PBS 203 transmits color light having a light amount corresponding to the degree of rotation of the polarization axis of the light emitted from the liquid crystal light valves 100B, 100R, and 100G. This amount of light corresponds to the amount of light (transmittance) corresponding to the gradation level assigned to each color light. The color light transmitted through each PBS 203 is reflected by blue light B and red light R by the wavelength selective reflection layer of blue light reflection / red light reflection formed in an X shape in the color synthesis prism 204, and green light G is reflected. After being transmitted, the color light is synthesized and emitted. An image is projected onto the screen 206 by the projection lens 205 with this color light. Since the projector 400 according to the present embodiment includes the above-described liquid crystal device, both the display performance and the reliability can be improved.

It is the top view which looked at the liquid crystal device concerning this embodiment from the counter substrate side with each component formed on it. It is II-II 'sectional drawing of FIG. FIG. 4 is a circuit diagram illustrating a circuit configuration in an image display region of the liquid crystal device according to the present embodiment. It is the top view which expanded and showed a part of liquid crystal device which concerns on this embodiment. It is VV 'sectional drawing of FIG. It is the figure which showed the structure 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, 9a ... Pixel electrode, 50 ... Liquid crystal layer, 50a ... Liquid crystal element, 73 ... Conductive reflection Membrane, 90 ... opening, 400 ... projector

Claims (4)

A first substrate;
A second substrate disposed to face the first substrate;
A plurality of pixel electrodes each formed in a plurality of pixel regions constituting a display region on the first substrate, and made of a transparent conductive material;
A counter electrode made of the transparent conductive material, formed on one surface of the second substrate facing the first substrate so as to face the plurality of pixel electrodes;
A liquid crystal layer sandwiched between the first substrate and the second substrate;
A driving element formed on the lower side of the pixel electrode in the pixel region and electrically connected to the pixel electrode;
Formed between the driving element and the pixel electrode on the first substrate, and reflects light incident on the pixel region from the second substrate side as viewed from the first substrate toward the second substrate side. A conductive reflective film,
A liquid crystal device comprising: an insulating film formed between the pixel electrode and the conductive reflective film. The liquid crystal device according to claim 1, wherein the conductive reflective film extends over the plurality of pixel regions. An opening formed in the conductive reflective film,
The liquid crystal device according to claim 1, wherein the pixel electrode and the driving element are electrically connected to each other through a connection portion formed in the opening. An electronic apparatus comprising the liquid crystal device according to any one of claims 1 to 3.

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