KR100827261B1 - Electro-optical device and electronic apparatus including the same - Google Patents

Abstract

(Problem) In an electro-photon device such as a liquid crystal device, a signal for controlling the scanning direction is stably supplied to the scan line driver circuit, thereby preventing malfunction in the scan line driver circuit.

The electro-optical device includes a plurality of pixel portions, a plurality of scan lines and a plurality of data lines wired to pixel regions in which the plurality of pixel portions are arranged, and a scan line driver circuit for supplying scan signals to the scan lines. Further, the scan line driver circuit is arranged to be in a different order from that of 1 based on the electrostatic direction control signal for controlling the scan line driver circuit so that the order of supplying the scan signals in the plurality of scan lines is in the order of 1. And an inversion direction control signal generation circuit for generating an inversion direction control signal for controlling and supplying an electrostatic direction control signal and an inversion direction control signal to the scan line driver circuit.

Reverse direction control signal generation circuit

Description

ELECTRO-OPTICAL DEVICE AND ELECTRONIC APPARATUS INCLUDING THE SAME}

BRIEF DESCRIPTION OF THE DRAWINGS The top view which shows the whole structure of the liquid crystal device which concerns on 1st Embodiment.

FIG. 2 is a sectional view taken along line H-H 'of FIG. 1; FIG.

3 is a block diagram showing a configuration of main parts of a liquid crystal device according to a first embodiment.

4 is a block diagram showing an electrical configuration of a pixel portion of a liquid crystal device according to the first embodiment.

5 is a circuit diagram of an inversion direction control signal generating circuit of the liquid crystal device according to the first embodiment.

FIG. 6 is a block diagram for the same purpose as FIG. 3 in the second embodiment. FIG.

7 is a plan view showing the configuration of a projector which is an example of electronic equipment to which an electro-optical device is applied.

8 is a perspective view showing a configuration of a PC which is an example of an electronic apparatus to which an electro-optical device is applied.

9 is a perspective view showing a configuration of a mobile phone which is an example of an electronic apparatus to which an electro-optical device is applied.

Explanation of the sign

6a... Data line, 7... Sampling circuit,

9a... Pixel electrode, 10... TFT array substrate,

10a... Image display area, 11a... scanning line,

20... Opposing substrate, 21... Counter electrode,

23... Light shielding film; Liquid Crystal Layer,

52... Sealing material, 52a... Seal Area,

53... Frame light shielding film, 53a... Frame Area,

80... Inverted directional control signal generation circuit, 101. Data line driving circuit,

102... External circuit connecting terminal 104... Scan line drive circuit,

DIRY… Electrostatic directional control signal, DIRYB... Reverse direction control signal,

G1,... , Gm… Scan signal

TECHNICAL FIELD This invention relates to the technical field of electronic devices, such as a liquid crystal projector, for example, provided with electro-optical devices, such as a liquid crystal device, and this electro-optical device.

When such an electro-optical device is mounted, for example, in a liquid crystal projector or the like, there may be a case where an image inverted vertically, an image inverted vertically, horizontally or inverted from the positional relationship of the optical system, etc. may be required. . For example, in a double color projector in which three liquid crystal devices are combined as light valves, white light is emitted from a light source, and once separated by color through a half mirror, mirror, prism, or the like, for each color light valve. The light of the color of which the number of reflections in the half mirror or the like is even-circuited and the light of the color of the odd-circuit exist until it is modulated at and further synthesized into one light thereafter. Therefore, for example, the necessity of inverting the image is generated for light of any color, such as the G light valve among the RGB light valves. In addition, if it is possible to display an image inverted up and down without distinguishing between a double type and a single plate type, for example, as a floor laying type in which a liquid crystal projector is usually installed on the floor, it is mounted upside down on the ceiling. It becomes usable as a ceiling hanging type to say.

In order to perform such an inverted display, the display apparatus etc. which made the operation direction of a scanning line drive circuit switchable etc. are disclosed by patent applicant 1, for example. In the technique disclosed in Patent Literature 1, the shift register constituting the scan line driver circuit is capable of bidirectional operation, that is, switching the scanning direction by using the bidirectional shift register to switch the standard image display and the reverse image display.

[Patent Document 1] Japanese Unexamined Patent Publication No. 2004-139111

However, in the above technique, it is necessary to supply a control signal for inverting the scanning direction from an external circuit separately from the control signal in the standard direction. For this reason, for example, apart from the control signal in the standard direction, there is a technical problem that an external circuit connection terminal for the control signal in the reverse direction or a dedicated wiring extending therefrom must be provided. In addition, for example, since the wiring path for supplying the control signal from the external circuit connection terminal to the scan line driver circuit is long, the control signal may be affected by noise from other circuits. There is also a technical problem that a shift in phase, amplitude, waveform, or the like may occur between control signals in the inverting direction.

SUMMARY OF THE INVENTION An object of the present invention is to provide an electro-optical device which is configured in view of the above-described problems, and which can stably supply a signal for controlling the scanning direction to a scan line driver circuit, and which can prevent malfunction in the scan line driver circuit. Shall be.

Means to solve the problem

In order to solve the said subject, the electro-optical device of this invention scans on a board | substrate the some pixel part, the some scan line and some data line wired in the pixel area | region in which this some pixel part was arranged, and the said scanning line. The first order is based on a scan line driver circuit for supplying a signal and an electrostatic direction control signal for controlling the scan line driver circuit to make the order of supplying the scan signals to the plurality of scan lines in a first order. Generating an inverted direction control signal for controlling the scan line driver circuit so as to be in an inverted second order and supplying the electrostatic direction control signal and the inverted direction control signal to the scan line driver circuit; Equipped.

According to the electro-optical device of the present invention, at the time of its operation, the image signal is supplied to the pixel portion through the data line by, for example, the data line driving circuit, and the scanning lines are sequentially arranged by the scanning line driving circuit, for example. Is selected. That is, scan signals are sequentially supplied to the pixel portion via the scan line. For example, in parallel with the supply of such a scan signal, by supplying an image signal to a pixel portion via a data line, for example, an electro-optic material such as a liquid crystal, which is sandwiched between a pixel electrode and an opposite electrode, for example, each pixel. By driving negatively, active matrix driving is performed. That is, image display is performed in the pixel region or pixel array region (or also called "image display region") in which the pixel portions are arranged.

In the present invention, in particular, an inversion direction control signal generation circuit is provided on the substrate. The inversion direction control signal generation circuit is a second order inverted from the first order based on the electrostatic direction control signal for controlling the scan line driver circuit so that the order of supplying the scan signals for the plurality of scan lines is in the first order. This generates an inversion direction control signal for controlling the scan line driver circuit. The electrostatic direction control signal is supplied from an external circuit through an external circuit connection terminal, for example. The electrostatic direction control signal is a signal for controlling the scan line driver circuit so as to supply the scan signal in the order of, for example, the direction from the top to the bottom in the pixel region, and the reverse direction control signal is inverted. As a 2nd order, it is a signal which controls a scanning line drive circuit so that a scanning signal may be supplied in the order of the direction from the bottom to the top in a pixel area, for example. That is, when the scan line driver circuit is driven based on the electrostatic direction control signal and when driven based on the inversion direction control signal, the images displayed in the pixel region are inverted from each other. In addition, the inversion of the image display is a function that is particularly necessary when the electro-optical device is applied to a projector.

The inversion direction control signal generation circuit also supplies an electrostatic direction control signal and an inversion direction control signal to the scan line driver circuit. Therefore, the scanning line driver circuit can supply the scanning signals in the first order or in the second order inverted from the first order based on either of the electrostatic direction control signal and the inversion direction control signal. Thus, for example, it is possible to select whether or not to reverse the image display by the user's selection.

In addition, in the present invention, the inversion direction control signal is generated on the substrate, in particular, by the inversion direction control signal generation circuit provided on the substrate, i.e., the substrate embedded type. Therefore, it is not necessary to form an external circuit connection terminal for supplying the inversion direction control signal from the external circuit. Therefore, the space on the substrate can be used effectively as long as it is not necessary to provide an external circuit connection terminal for supplying the reverse direction control signal or a dedicated wiring extending therefrom, or other control signals or the like instead of the reverse direction control signal. In order to supply, an external circuit connection terminal can be used. In addition, it is possible to reduce the variation in phase, amplitude, waveform, and the like, which may be generated between the electrostatic direction control signal and the reverse direction control signal by being affected by noise to a different degree from different wirings or circuits.

As described above, according to the electro-optical device of the present invention, the electrostatic direction control signal and the inversion control signal can be reliably supplied to the scan line driver circuit, and for example, the user can select whether or not to reverse the image display by the user's selection. have.

In one aspect of the electro-photon device of the present invention, the scanning line driving circuit and the inversion direction control signal generating circuit are each provided in two, and each of the two scanning line driving circuits is in a peripheral region located in the periphery of the pixel region. It is arrange | positioned along each of a pair of 1st side of the said board | substrate, and the said two inversion direction control signal generation circuits are respectively provided in the said peripheral area | region corresponding to each of the said two scanning line drive circuits.

According to this aspect, the inversion direction control signal generation circuits are two inversion direction control signal generation circuits provided corresponding to each of the two scanning line driver circuits, preferably in respective portions along the first side of the peripheral region. Therefore, the stable electrostatic direction control signal and the reverse direction control signal can be supplied as compared with the case where only one inversion direction control signal generation circuit is provided. For example, the distance between the inversion direction control signal generation circuit and the corresponding scan line driver circuit may be determined such that the noise from another circuit or wiring does not enter the electrostatic direction control signal and the inversion direction control signal, or the electrostatic direction control signal and the inversion. When the direction control signal is so close that it is not attenuated by the wiring resistance or the like, it is possible to supply a more stable electrostatic direction control signal and an inversion direction control signal. Therefore, the error copper in a scanning line drive circuit can be prevented, and finally high quality image display is attained.

In another aspect of the electro-optical device of the present invention, the scanning line driver circuit includes two scanning line driver circuits, and each of the two scanning line driver circuits is configured as a pair of first sides of the substrate in a peripheral region positioned around the pixel region. Arranged along each, the inversion direction control signal generation circuit is disposed between the pair of first sides in the peripheral region.

According to this aspect, the inversion direction control signal generation circuit is close to the center between the pair of first sides in the peripheral region, that is, the center of any one of the second sides adjacent to the first side, that is, this one side It is arrange | positioned in the position near the center of this one side compared with the both ends of the side. Therefore, the electrostatic direction control signal and the inversion direction control which are mostly or practically the same for each of the two scan line driver circuits disposed along each of the pair of first sides of the substrate in the peripheral area located at the periphery of the pixel area. Can supply the signal. Therefore, the difference in operation between the two scan line driver circuits can be largely or practically eliminated.

In another aspect of the electro-optical device of the present invention, an external circuit connection terminal for supplying the electrostatic direction control signal is further provided on the substrate, and the inversion direction control signal generation circuit is provided from the external circuit connection terminal. In the wiring path leading to the scan line driver circuit, the wiring line driver circuit is disposed closer to the scan line driver circuit than the external circuit connection terminal.

According to this aspect, the inversion direction control signal generation circuit is disposed on the side closer to the scan line driver circuit than the external circuit connection terminal in the wiring path from the external circuit connection terminal to the scan line driver circuit. That is, from the inversion direction control signal generation circuit, the external circuit connection terminal is farther from the scanning line driver circuit. As a result, the wiring resistance or wiring capacitance formed by the wiring from the external circuit connection terminal to the inversion direction control circuit is compared with the case where the inversion direction control circuit is disposed closer to the external circuit connection terminal than the scan line driver circuit. It is big. Therefore, even when unexpected static electricity is applied to the external circuit connection terminal during or after manufacture, it is possible to reduce or prevent the occurrence of electrostatic breakdown of the inversion direction control signal generation circuit.

In the aspect further provided with the external circuit connection terminal mentioned above, the said inversion direction control signal generation circuit is the said external circuit connection terminal arrange | positioned with respect to the said pixel area in the peripheral area located in the periphery of the said pixel area. You may arrange | position in the area | region located on the opposite side to an area | region.

In this case, an inversion direction control signal generation circuit is arranged in a dead space where, for example, an external circuit connection terminal or wiring for supplying an image signal or various control signals is smaller than a region in which an external circuit connection terminal is arranged. do. Therefore, the inversion direction control signal generation circuit can be arranged without increasing the area on the substrate or making almost no design changes to other circuits or wiring.

In another aspect of the electro-optical device of the present invention, there is further provided an opposing substrate disposed to face the substrate, and a sealing material for adhering the substrate and the opposing substrate, wherein the inversion direction control signal generation circuit is planar on the substrate. In view of the above, it is disposed in a region formed between the pixel region and a seal region in which the seal member is formed.

According to this aspect, a board | substrate and an opposing board | substrate are adhere | attached with the sealing material which consists of photocurable resin etc., for example. The seal region in which the seal member is formed is located to surround the pixel region, and is located outside the outer edge of the frame region defining the periphery of the pixel region, for example, and has a mouth-shaped shape.

In this aspect in particular, the inversion direction control signal generation circuit is disposed in an area formed between the pixel area and the seal area. Therefore, after the substrate and the opposing substrate are bonded together, the electrical or physical influence from the outside on the inversion direction control signal generation circuit can be reduced. That is, the inversion direction control signal generation circuit can be protected.

In another aspect of the electro-optical device of the present invention, a frame light shielding film defining a periphery of the pixel area is further provided, and the inversion direction control signal generation circuit is disposed in a frame area in which the frame light shielding film is formed.

According to this aspect, the inversion direction control signal generation circuit is disposed in the frame region. For example, when the pixel area is a rectangular shape, the frame area is an area where the periphery of the rectangular shape is edged to a predetermined width. Thus, for example, the frame region has an inlet shape when viewed in plan on the substrate. Therefore, the inversion direction control signal generation circuit can be arranged without adversely affecting most or practically the image display. In addition, it is not necessary to increase the substrate size. In addition, such a frame area may be regarded as an area located between the pixel area and the peripheral area, or may be regarded as a part in contact with the pixel area in the peripheral area. Either way, the edge of the pixel region is defined by the frame light shielding film.

In another aspect of the electro-optical device of the present invention, the scanning line driver circuit outputs a transmission signal for controlling the timing of supply of the scanning signal in order from each stage, and the driving order of each stage controls the electrostatic direction. And a shift register reversible based on the signal and the inversion direction control signal.

According to this aspect, the driving direction of the shift register in the scanning line driver circuit is electrostatically or inverted based on the electrostatic direction control signal or the inversion direction control signal, thereby reversing the supply direction of the scan signal. That is, the shift register is a so-called "bidirectional shift register". By controlling the driving direction of the shift register incorporated in the scanning line driver circuit in this way, it is possible to relatively easily control the scanning direction.

In order to solve the said subject, the electronic device of this invention comprises the electro-optical device of this invention mentioned above.

According to the electronic device of the present invention, since the electro-optical device of the present invention is provided, a projection display device capable of high quality display, a cellular phone, an electronic notebook, a word processor, a viewfinder type, or a monitor direct view type video tape are provided. Various electronic devices such as a recorder, a workstation, a television telephone, a POS terminal, and a touch panel can be realized. In addition, as the electronic device of the present invention, for example, an electrophoretic device such as electronic paper can be realized.

The operation and other benefits of the present invention will become apparent from the best mode for carrying out the following description.

Implement the invention  Best form for

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described, referring drawings. In the following embodiment, the liquid crystal device of the TFT active-matrix drive system with a built-in drive circuit which is an example of the electro-optical device of this invention is taken as an example.

<1st embodiment>

The liquid crystal device according to the first embodiment will be described with reference to FIGS. 1 to 5.

First, with reference to FIG. 1 and FIG. 2, the whole structure of the liquid crystal device which concerns on this embodiment is demonstrated. Here, FIG. 1 is a top view which shows the structure of the liquid crystal device which concerns on this embodiment, and FIG. 2 is sectional drawing in the H-H 'line | wire of FIG.

1 and 2, in the liquid crystal device according to the present embodiment, the TFT array substrate 10 and the counter substrate 20 are disposed to face each other. The liquid crystal layer 50 is enclosed between the TFT array substrate 10 and the opposing substrate 20, and the TFT array substrate 10 and the opposing substrate 20 are images as an example of the "pixel region" according to the present invention. It is mutually bonded by the sealing material 52 formed, for example from photocurable resin, formed in the sealing area 52a located around the display area 10a. As shown in FIG. 1, the seal area 52a is located on the TFT array substrate 10 so as to surround the image display area 10a in plan view, and has a substantially rectangular frame shape.

In FIG. 1, the light-shielding frame light shielding film 53 which defines the periphery of the image display area 10a in parallel with the inside of the seal area 52a in which the sealing material 52 is arrange | positioned is the opposing board | substrate 20 side. It is formed in. The frame region 53a on which the frame light shielding film 53 is formed has a rectangular frame shape when viewed from the plane on the TFT array substrate 10.

The data line driving circuit 101 and the external circuit connection terminal 102 have one side of the TFT array substrate 10 in the peripheral region, which is located outside the sealing region 52a in which the sealing member 52 is disposed. It is installed along. The sampling circuit 7 is formed so that the frame light shielding film 53 may be covered in the frame region 53a inside the seal region 52a along this one side. In addition, although not shown here, in order to connect between two scanning line driver circuits 104 provided on both sides of the image display region 10a in this way, the frame is further along the other side of the TFT array substrate 10. A plurality of wirings 105 (see FIG. 3) are formed to cover the light shielding film 53. The scanning line driver circuit 104 is formed so as to cover the frame light shielding film 53 in the frame region 53a inside the seal region 52a along two sides adjacent to this one side. In addition, the inversion direction control signal generation circuit 80 which is mentioned later is formed in each part along this one side of the frame area | region 53a corresponding to each of the two scanning line drive circuits 104, respectively. In addition, on the TFT array substrate 10, a vertical conducting terminal 106 for connecting the two substrates with the vertical conductive material 107 is disposed in a region facing the four corner portions of the opposing substrate 20. . Thereby, electrical conduction can be made between the TFT array substrate 10 and the counter substrate 20.

On the TFT array substrate 10, a swivel wiring 90 for electrically connecting the external circuit connection terminal 102, the data line driver circuit 101, the scan line driver circuit 104, the upper and lower conductive terminals 106, and the like is provided. Formed.

In Fig. 2, on the TFT array substrate 10, a laminated structure in which wirings such as TFTs (Thin Film Transistors) for scanning pixels, scanning lines, data lines, etc. which are driving elements are formed is formed. In the image display region 10a, the pixel electrode 9a is formed on the wiring upper layer such as a pixel switching TFT, a scanning line, a data line, or the like. On the other hand, the light shielding film 23 is formed on the opposing surface with the TFT array substrate 10 in the opposing substrate 20. And the counter electrode 21 which consists of transparent materials, such as ITO, is formed on the light shielding film 23 facing the some pixel electrode 9a. In addition, the liquid crystal layer 50 consists of liquid crystal which mixed 1 type or several types of nematic liquid crystals, for example, and takes a predetermined orientation state between these pair of alignment films.

In addition, although not shown here, the inspection for inspecting the quality, defect, etc. of the said liquid crystal device during manufacture or shipment in addition to the data line drive circuit 101 and the scanning line drive circuit 104 on the TFT array substrate 10 is carried out. Circuits, inspection patterns, etc. may be formed.

Next, with reference to FIG. 3 and FIG. 4, the main structure of this liquid crystal device is demonstrated. 3 is a block diagram which shows the structure of the principal part of the liquid crystal device which concerns on this embodiment. 4 is a block diagram showing an electrical configuration of a pixel portion.

In FIG. 3, the liquid crystal device according to the present embodiment includes a scan line driver circuit 104 and a data line driver circuit in a peripheral region located around the image display region 10a on the TFT array substrate 10. And a driving circuit such as the sampling circuit 7 are formed.

As shown in FIG. 3, the scan line driver circuit 104 is supplied with a Y clock signal CLY (and an inverted Y clock signal CLYB) and a Y start pulse signal DY from an external circuit through an external circuit connection terminal 102. 4, the electrostatic direction control signal DIRY and the inversion direction control signal DIRYB are supplied to the scanning line driver circuit from the inversion direction control signal generation circuit 80 mentioned later. As will be described later in detail, the scan line driver circuit 104 generates and outputs the scan signals G1, ..., Gm in this order or in an order inverted from this order based on these signals.

In FIG. 3, the X line signal CLX (and the inverted X clock signal CLXB) and the X start pulse DX are supplied from the external circuit to the data line driving circuit 101 through the external circuit connection terminal 102. When the X start pulse DX is input, the data line driving circuit 101 sequentially generates and outputs sampling signals S1, ..., Sn at a timing based on the X clock signal CLX (and the inverted X clock signal XCLXB). do.

The sampling circuit 7 is provided with a plurality of sampling switches 7s composed of P-channel or N-channel single channel TFTs or complementary TFTs.

In FIG. 3, the liquid crystal device according to the present embodiment further includes a plurality of pixel units each having pixel electrodes 9a arranged in a matrix in an image display region 10a that occupies the center of the TFT array substrate. Formed.

As shown in Fig. 4, the plurality of pixel portions are each provided with a TFT 30 for switching control of the pixel electrode 9a and the pixel electrode 9a, and the image signals VS1, VS2, ..., VSn. ) Is supplied with the data line 6a electrically connected to the source of the TFT 30. The image signals VS1, VS2,..., VSn recorded in the data line 6a may be supplied in line order in this order, and may be grouped with respect to the plurality of data lines 6a adjacent to each other. You may supply. In addition, as shown in FIG. 3, in this embodiment, six image signals VS1, VS2, ..., VSn respond | correspond to each of the image signals VID1-VID6 extended in parallel in 6 phases, respectively. A set of data lines 6a is configured to be supplied for each group. Regarding the number of phase developments of the image signal (that is, the number of series of image signals to be developed in parallel parallel), the image is not limited to six phases, but is an image developed in multiple phases such as 9 phases, 12 phases, and 24 phases. You may comprise so that a signal may be supplied with respect to the set of data lines 6a which made the number corresponding to the expansion number one set.

In Fig. 4, the gate electrode 3a is electrically connected to the gate of the TFT 30, and as will be described in detail later, the scan line 11a and the gate are provided at a predetermined timing from the scan line driver circuit 104. It is configured to apply the scanning signals G1, G2, ..., Gm to the electrode 3a in line order in this order or in an order inverted from this order. The pixel electrode 9a is electrically connected to the drain of the TFT 30, and the image signal VS1, supplied from the data line 6a by closing the switch of the TFT 30 as the switching element only for a certain period of time, VS2, ..., VSn) are recorded at predetermined timing.

The image signals VS1, VS2, ..., VSn having a predetermined level recorded in the liquid crystal via the pixel electrode 9a are held for a predetermined period between the counter electrodes formed on the counter substrate. The liquid crystal modulates light by making the orientation and order of the molecular set change according to the voltage level applied, thereby enabling gray scale display. In the normally white mode, the transmittance for incident light is reduced according to the voltage applied in units of each pixel, and in the normally black mode, the transmittance for the incident light is increased in accordance with the voltage applied in units of pixels, and the overall electric From the optical device, light having contrast in accordance with the image signal is emitted.

In addition, in order to prevent the held image signal from leaking, a storage capacitor 70 is added in parallel with the liquid crystal capacitor formed between the pixel electrode 9a and the counter electrode.

Next, the inversion direction control signal generation circuit according to the present embodiment will be described with reference to FIGS. 1 and 3 to 5. 5 is a circuit diagram showing the electrical configuration of the inversion direction control signal generation circuit.

3 and 4, in the liquid crystal device of the present embodiment, the inversion direction control signal generation circuit 80 is provided on the TFT array substrate 10 in particular. The inversion direction control signal generation circuit 80 sets the order of supplying the scanning signals G1, ..., Gm in the plurality of scanning lines 11a in the order of 1, for example, in the image display area 10a. 3 is another order inverted from the order of 1 based on the electrostatic direction control signal DIRY for controlling the scan line driver circuit 104 to be in the order from the top to the bottom, for example, an image. In FIG. 3, the inversion direction control signal for controlling the scan line driver circuit 104 is generated in the display area 10a so as to be in the order from the bottom to the top. When the scan line driver circuit 104 is driven based on the electrostatic direction control signal DIRY and when driven based on the inversion direction control signal DIRYB, the images displayed in the image display area 10a are inverted from each other. Done. In addition, such an image display inversion function is particularly necessary when the liquid crystal device is applied to a projector.

4, in the present embodiment, the inversion direction control signal generation circuit 80 supplies the electrostatic direction control signal DIRY and the inversion direction control signal DIRYB to the scan line driver circuit 104 in particular. Therefore, the scan line driver circuit 104 applies the scan signals G1, ..., Gn to the scan line 11a based on either of the electrostatic direction control signal DIRY and the inversion direction control signal DIRYB in the order of 1. They can be supplied in turn or in a different order that is reversed from the order of 1. Thereby, for example, it is possible to select whether or not to reverse the image display in the image display area 10a by the user's selection.

In addition, in FIG. 3, in the present embodiment, the inversion direction control signal (on the TFT array substrate 10 is formed on the TFT array substrate 10, that is, by the inboard direction inversion direction control signal generation circuit 80). DIRYB) is created. Thereby, it is not necessary to form the external circuit connection terminal 102 for supplying the inversion direction control signal DIRYB from the external circuit. Therefore, the space on the TFT array substrate 10 can be used effectively as long as it is not necessary to provide the external circuit connection terminal 102 for supplying the inversion direction control signal DIRYB, or the inversion direction control signal DIRYB. The external circuit connection terminal 102 can be used to supply other control signals or the like instead.

Here, with reference to FIG. 5, the specific structure of the inversion direction control signal generation circuit 80 is demonstrated. As shown in FIG. 5, the inversion direction control signal generation circuit 80 is composed of a plurality of inverters 180. When the electrostatic direction control signal DIRY is input to the inversion direction control signal generation circuit 80, the electrostatic direction control signal DIRY is outputted through four inverters as buffer circuits, and the three inverters as the inversion circuit and the buffer circuits. The inversion direction control signal DIRYB in which the potential of the electrostatic direction control signal DIRY is inverted with respect to the reference potential is output through the signal. In addition, the structure of the inversion direction control signal generation circuit 80 is not limited to the structure shown in FIG. 5, For example, you may increase or decrease the number of connected terminals of an inverter. When the inverted direction control signal generation circuit 80 is constituted in this way, the electrostatic direction control signal DIRY and the inversion direction control signal DIRYB on the output side are substantially free from variations in phase, amplitude, waveform, and the like. It can be created. That is, there is no problem even if a deviation in phase, amplitude, waveform, etc. occurs between the electrostatic direction control signal DIRY on the input side and the inversion direction control signal DIRYB on the output side.

3 again, in the present embodiment, in particular, the inversion direction control signal generation circuit 80 corresponds to each of the two scanning line driver circuits 104 and is the first of the frame regions 53a (see FIG. 1). One is formed in each part along the side. That is, the TFT array substrate 10 is provided one by one in the region located above each of the two scanning line driver circuits 104 in plan view. Therefore, the stable electrostatic direction control signal DIRY and the reverse direction control signal DIRYB can be supplied as compared with the case where only one inversion direction control signal generation circuit 80 is provided. As shown in FIG. 3, the distance between the inversion direction control signal generation circuit 80 and the corresponding scan line driver circuit 104 is different from the electrostatic direction control signal DIRY and the inversion direction control signal DIRYB. It is so close that the noise from the circuit does not enter or the electrostatic direction control signal DIRY and the inversion direction control signal DIRYB are not attenuated by the wiring resistance or the like. Therefore, the stable direction electrostatic direction control signal DIRY and the reverse direction control signal DIRYB can be supplied to the scanning line driver circuit 104 by the inversion direction control signal generation circuit 80. Therefore, error driving in the scan line driver circuit 104 can be prevented. In addition, it becomes possible to reduce the deviation of the phase, amplitude, waveform, etc., which may occur due to the influence of the noise to a different degree between the electrostatic direction control signal DIRY and the inversion direction control signal DIRYB. That is, the display characteristics when the electrostatic direction control signal DIRY is used and the display characteristics when the reverse direction control signal DIRYB are used can be made substantially the same except that they are inverted.

In addition, in FIG. 3, in the present embodiment, the inversion direction control signal generation circuit 80 is particularly connected to the external circuit connection terminal in the wiring path from the external circuit connection terminal 102 to the scan line driver circuit 104. It is arranged closer to the scanning line driver circuit 104 than the 102. That is, from the inversion direction control signal generation circuit 80, the external circuit connection terminal 102 is farther from the scanning line driver circuit 104. As shown in FIG. As a result, the wiring resistance or the wiring capacitance formed by the wiring from the external circuit connection terminal 102 to the inversion direction control circuit 80 is different from that of the scan line driver circuit 104 in the inversion direction control circuit 80. It is larger than the case where it is arrange | positioned near the circuit connection terminal 102. As shown in FIG. Therefore, even when unexpected static electricity is applied to the external circuit connection terminal 102 during or after the production, it is possible to reduce or prevent the occurrence of electrostatic breakdown of the inversion direction control signal generation circuit 80.

3, the inversion direction control signal generation circuit 80 has the external circuit connection terminal 102 with respect to the image display area 10a in the peripheral area located in the periphery of the image display area 10a. Is arranged in an area located on the side opposite to the area in which is disposed. That is, the inversion direction control signal generation circuit 80 is arrange | positioned in the dead space where the wirings, such as the draw wiring 90, etc. are smaller than the area | region in which the external circuit connection terminal 102 is arrange | positioned. Thereby, the inversion direction control signal generation circuit 80 can be arrange | positioned without increasing the area on the TFT array board | substrate 10, or carrying out design change of another circuit, wiring, etc. substantially.

In Fig. 1, in the present embodiment, in particular, as described above, the inversion direction control signal generation circuit 80 is disposed in the frame region 53a. Therefore, most or practically no adverse effects on the image display. In addition, in order to arrange the inversion direction control signal generation circuit 80, it is not necessary to increase the size of the TFT array substrate 10. In addition, the inversion direction control signal generation circuit 80 is disposed in an area formed between the image display area 10a and the seal area 52a. Therefore, after the TFT, the array substrate 10 and the counter substrate 20 are bonded together, the electrical or physical influence from the outside on the inversion direction control signal generation circuit 80 can be reduced. That is, the inversion direction control signal generation circuit 80 can be protected.

Next, with reference to FIG. 4, the structure of a scanning line driver circuit is demonstrated.

In FIG. 4, in the present embodiment, in particular, the scan line driver circuit 104 outputs a transmission signal for controlling the supply timing of the scan signals G1, ..., Gm in order from each stage, and at each stage. The driving order of includes a shift register 104a that can be inverted based on the electrostatic direction control signal DIRY and the inversion direction control signal DIRYB. That is, the scan line driver circuit 104 includes a shift register 104A which is a so-called "bidirectional shift register". Therefore, the driving direction of the shift register 104A in the scanning line driver 104 is reversed based on the electrostatic direction control signal DIRY or the inversion direction control signal DIRYB to reverse the supply direction of the scan signal. Can be. Therefore, by controlling the driving direction of the shift register 104a incorporated in the scanning line driver circuit 104 in this way, the control of the scanning direction can be performed relatively simply.

As described above, according to the liquid crystal device of the present embodiment, the direction control signal DIRY and the inversion control signal DIRYB can be reliably supplied to the scan line driver circuit 104, for example, by the user's selection. You can choose whether or not to reverse the display.

<2nd embodiment>

The electro-optical device according to the second embodiment will be described with reference to FIG. 6. 6 is a block diagram of the same effect as FIG. 3 in 2nd Embodiment. 6, the same code | symbol is attached | subjected to the component same as the component which concerns on 1st Embodiment shown in FIG. 3, and the description is abbreviate | omitted suitably.

In FIG. 6, in the present embodiment, in particular, the inversion direction control signal generation circuit 80 includes a second side adjacent to the first side (that is, the left side and the right side in FIG. 6) of the image display area 10a. (That is, the upper side and the lower side in Fig. 6) are disposed near the center of the upper side, that is, at a position near the center of the upper side as compared with both ends of the upper side. Therefore, in the peripheral region located around the image display region 10a, disposed along each of the pair of first sides of the TFT array substrate 10, that is, arranged to the left and right of the image display region 10a. For each of the two scan line driver circuits 104, most or preferably completely identical electrostatic direction control signals DIRY and inverted direction control signals DIRYB can be supplied. Therefore, most or preferably the difference in operation between the two scan line driver circuits 104 can be eliminated completely, and malfunction of the electro-optical device can be prevented.

In addition, since the inversion direction control signal generation circuit 80 is formed in the frame region 53a, the circuit can be efficiently installed in a region where the wiring has been conventionally drawn, and therefore, there is a great effect in miniaturization of the electro-optical device. .

(Electronics)

Next, the case where the liquid crystal device which is the above-mentioned electro-optical device is applied to various electronic devices will be described.

First, the projector which used this liquid crystal device as a light valve is demonstrated. 7 is a plan view illustrating a configuration example of a projector. As shown in FIG. 7, a lamp unit 1102 made of a white light source such as a halogen lamp is formed inside the projector 1100. The projection light emitted from the lamp unit 1102 is separated into three primary colors of RGB by four mirrors 1106 and two dichroic mirrors 1108 disposed in the light guide 1104, and the respective primary colors. Incident on liquid crystal panels 1110R, 1110B, and 1110G as corresponding light valves.

The configurations of the liquid crystal panels 1110R, 1110B, and 1110G are equivalent to those of the liquid crystal device described above, and are driven by primary color signals of R, G, and B supplied from an image signal processing circuit, respectively. The light modulated by these liquid crystal panels is incident on the dichroic prism 1112 from three directions. In this dichroic prism 1112, light of R and B is refracted by 90 degrees, while light of G goes straight. Therefore, as a result of combining the images of each color, the color image is projected onto the screen or the like through the projection lens 1114.

Here, with respect to the display image by each liquid crystal panel 1110R, 1110B, and 1110G, the display image by the liquid crystal panel 1110G needs to invert left and right with respect to the display image by the liquid crystal panel 1110R, 1110B. There is.

In addition, since the light corresponding to each primary color of R, G, and B enters into liquid crystal panels 1110R, 1110B, and 1110G, it is not necessary to provide a color filter.

Next, an example in which the liquid crystal device is applied to a mobile personal computer will be described. 8 is a perspective view showing the configuration of this personal computer. In FIG. 8, the computer 1200 is composed of a main body portion 1204 provided with a keyboard 1202 and a liquid crystal display unit 1206. This liquid crystal display unit 1206 is configured by adding a backlight to the back surface of the liquid crystal device 1005 described above.

In addition, an example in which the liquid crystal device is applied to a cellular phone will be described. 9 is a perspective view showing the structure of this cellular phone. In FIG. 9, the cellular phone 1300 includes a reflective liquid crystal device 1005 together with a plurality of operation buttons 1302. In this reflective liquid crystal device 1005, a front light is provided on its entire surface as needed.

In addition to the electronic apparatus described with reference to FIGS. 7 to 9, a liquid crystal television, a viewfinder type, a monitor direct view type video tape recorder, a car navigation device, a pager, an electronic notebook, a calculator, a word processor, a workstation, and a television A telephone, a POS terminal, the apparatus provided with a touch panel, etc. are mentioned. And, needless to say, those applicable to these various electronic devices.

In addition to the liquid crystal device described in the above-described embodiments, the present invention also includes a reflective liquid crystal device (LCOS), a plasma display (PDP), a field emission display (FED, SED), and an organic EL display that form elements on a silicon substrate. It is also applicable to the back.

The present invention is not limited to the above-described embodiments, and can be appropriately changed within the scope not contrary to the spirit or spirit of the invention as read from the claims and the entire specification, and the electro-optical device and this electro-electric system accompanying such a change. Electronic equipment including the optical device is also included in the technical scope of the present invention.

The present invention can effectively utilize the space on the substrate as long as it is not necessary to provide an external circuit connection terminal for supplying the reverse direction control signal or a dedicated wiring extending therefrom, or other control signals instead of the reverse direction control signal. External circuit connection terminals can be used to supply. In addition, it is possible to reduce the variation in phase, amplitude, waveform, and the like that may be generated between the electrostatic direction control signal and the reverse direction control signal by the influence of noise from different wirings or circuits to different degrees.

Claims (9)

On the substrate, A plurality of pixel units, A plurality of scan lines and a plurality of data lines wired to pixel regions in which the plurality of pixel portions are arranged; A scan line driver circuit for supplying a scan signal to the scan line, and It is comprised from a plurality of inverter circuits, and is inverted from the first order based on an electrostatic direction control signal for controlling the scan line driver circuit so that the order of supplying the scan signals to the plurality of scan lines is a first order. Generating an inversion direction control signal in which the potential of the electrostatic direction control signal is inverted with respect to a reference potential as the inversion direction control signal for controlling the scan line driving circuit so as to become the second order, and the electrostatic direction control signal and the inversion direction And an inversion direction control signal generation circuit for supplying a control signal to the scan line driver circuit. The method of claim 1, Each of the scan line driver circuit and the inversion direction control signal generation circuit, two; The two scanning line driver circuits are disposed along each of the pair of first sides of the substrate in a peripheral region positioned around the pixel region, respectively, And each of the two inversion direction control signal generation circuits is formed in the peripheral region corresponding to each of the two scan line driver circuits. The method of claim 1, Having two scanning line driving circuits, The two scanning line driver circuits are disposed along each of the pair of first sides of the substrate in a peripheral region positioned around the pixel region, respectively, And the inversion direction control signal generating circuit is disposed between the pair of first sides in the peripheral region. The method according to any one of claims 1 to 3, An external circuit connection terminal for supplying said electrostatic direction control signal on said substrate, And the inversion direction control signal generation circuit is disposed on a side closer to the scan line driver circuit than the external circuit connection terminal in a wiring path from the external circuit connection terminal to the scan line driver circuit. The method of claim 4, wherein And the inversion direction control signal generating circuit is disposed in a region located on a side opposite to the region in which the external circuit connection terminal is arranged with respect to the pixel region in a peripheral region positioned around the pixel region. Optical devices. The method according to any one of claims 1 to 3, An opposite substrate disposed to face the substrate, and Further comprising a sealing material for adhering the substrate and the opposing substrate, And the inversion direction control signal generation circuit is disposed in a region formed between the pixel region and a seal region in which the seal member is formed in plan view on the substrate. The method according to any one of claims 1 to 3, And a frame light shielding film defining a periphery of the pixel region, And the inversion direction control signal generation circuit is disposed in a frame region in which the frame light shielding film is formed. The method according to any one of claims 1 to 3, The scanning line driver circuit outputs a transmission signal for controlling the timing of supplying the scanning signal in order from each stage, and the driving order of each stage is inverted based on the electrostatic direction control signal and the reverse direction control signal. An electro-optical device comprising a possible shift register. An electronic device comprising the electro-optical device according to any one of claims 1 to 3.

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