JP4822041B2 - Manufacturing method of electro-optical device - Google Patents

Description

  The present invention relates to an electro-optical device and an electronic apparatus. The present invention particularly relates to an electro-optical device capable of bidirectionally scanning an image and an electronic apparatus including the same.

  A display device, for example, a liquid crystal display device using a liquid crystal as an electro-optical material, is widely used as a display device in place of a cathode ray tube (CRT) in a display unit of various information processing devices, a liquid crystal television, and the like.

  This type of electro-optical device includes, for example, an internal drive circuit such as a scanning line drive circuit and a data line drive circuit provided on a substrate, and a plurality of terminals electrically connected to the internal drive circuit. In addition, a mounting component is mounted on the plurality of terminals, and a predetermined type of signal is supplied from an external drive circuit connected to the mounting component. Then, based on a predetermined type of signal supplied through the plurality of terminals, the internal drive circuit drives and scans the plurality of pixels to display an image.

By the way, in a liquid crystal device, in order to be applied to a portable video monitor or the like, there are cases where a display image is vertically or horizontally reversed as necessary. For example, if the scanning direction in the above-described scanning line driving circuit or data line driving circuit can be switched to the left direction or the right direction, the display image can be reversed horizontally. As described above, a technique using a bidirectional scanning line driving circuit or a bidirectional data line driving circuit capable of switching the scanning direction bidirectionally is known in order to configure the conventional electro-optical device so that the scanning direction can be switched. (For example, Patent Document 1).
Japanese Patent Laid-Open No. 7-146462

  FIG. 1 is a diagram illustrating a configuration of a conventional electro-optical device that can switch the scanning direction in both directions. A conventional electro-optical device includes a liquid crystal panel, an external drive circuit, and a mounting member. The liquid crystal panel has a bidirectional scanning line driving circuit for driving scanning lines and a bidirectional data line driving circuit for driving data lines. Control signals DIRY and DIRYB supplied to the bidirectional scanning line driving circuit, The pixel scanning direction is determined based on the control signals DIRX and DIRXB supplied to the bidirectional data line driving circuit.

  However, in the conventional electro-optical device, when both the scanning line driving circuit and the data line driving circuit are bi-directionally shifted, the control signals DIRY and DIRYB and the control signals DIRX and DIRXB are transmitted to the external driving circuit. It was necessary to produce and supply to the liquid crystal panel. As described above, when the number of control signals for determining the scanning direction increases, a large number of control signals must be generated in the external drive circuit, which causes a problem that the circuit scale of the external drive circuit increases. . As a result, there has been a problem that the cost of the electro-optical device increases.

  Therefore, an object of the present invention is to provide an electro-optical device and an electronic apparatus that can solve the above-described problems. This object is achieved by a combination of features described in the independent claims. The dependent claims define further advantageous specific examples of the present invention.

  In order to solve the above problems, an electro-optical device according to the present invention is based on a plurality of scanning lines, a plurality of data lines, a plurality of pixels provided corresponding to the intersection of the scanning lines and the data lines, and an input signal. An electro-optical panel having an internal drive circuit for driving a pixel, a plurality of power supply terminals to which power is supplied, and a plurality of input terminals to which an input signal is supplied; A plurality of input terminals, and a plurality of input terminals supplied with a first control signal for determining a scanning direction for driving and scanning a pixel. The first control signal input terminal is electrically connected to the power supply terminal.

  According to the above configuration, the potential of the power source supplied to the electro-optical panel is supplied to the electro-optical panel as the first control signal that determines the scanning direction for driving and scanning the pixels. Accordingly, since it is not necessary to provide a configuration for generating the first control signal or the like in the external drive circuit, it is possible to provide an electro-optical device that has a simple configuration and is inexpensive.

  Further, according to the above configuration, the scanning direction is set in accordance with the potential of the power supply supplied to the first control signal input terminal. In other words, the scanning direction can be easily set to a desired direction by electrically connecting a power supply terminal to which power having a desired potential is supplied to the first control signal input terminal. Therefore, even after the electro-optical device is manufactured by electrically connecting the electro-optical panel and the external drive circuit, the scanning direction can be set according to the use of the electro-optical device.

  Further, according to the above configuration, since the first control signal input terminal can be electrically connected to the power supply terminal in the vicinity of the electro-optical panel, there is a risk that noise is applied to the first control signal that determines the scanning direction. Can be reduced.

  In the electro-optical device, it is preferable that the first control signal input terminal is provided adjacent to the power supply terminal.

  According to the above configuration, since the first control signal input terminal is provided adjacent to the power supply terminal, for example, it is connected to the first control signal input terminal and the power supply terminal in the mounting member and the external drive circuit, respectively. Wiring is also provided adjacently. Therefore, for example, since the first control signal input terminal and the power supply terminal can be easily electrically connected in the mounting member or the external drive circuit, the scanning direction can be easily set in a desired direction.

  In the electro-optical device, the plurality of power supply terminals include a high-order power supply terminal to which a high-order power supply necessary for the operation of the internal drive circuit is supplied, and a low-order power supply terminal to which a low-order power supply is supplied. The control signal input terminal is preferably electrically connected to the high-order power supply terminal or the low-order power supply terminal.

  According to the above configuration, the first control signal input terminal is supplied with the higher power supply or the lower power supply necessary for the operation of the internal drive circuit as the first control signal. That is, the scanning direction can be changed by electrically connecting the first control signal input terminal to the high-order power supply terminal or the low-order power supply terminal without separately providing a circuit or power supply for generating the first control signal. It can be set in a desired direction.

  In the electro-optical device, the mounting member has a plurality of power supply terminals and a plurality of wirings connected to the plurality of input terminals, and the first control signal input terminal is a high power supply terminal or a low power supply terminal in the wiring. The high-order power supply or the low-order power supply is used as a first control signal that determines the scanning direction, and the internal drive circuit drives the pixel based on the first control signal. Scanning is preferred.

  According to the above configuration, the first control signal input terminal is electrically connected to the high-order power supply terminal or the low-order power supply terminal on the wiring provided on the mounting member. That is, the wiring connected to the first control signal input terminal is connected to the wiring connected to the higher power supply terminal or the lower power supply terminal on the mounting member, whereby the first control signal input terminal is Are electrically connected to the high-order power supply terminal or the low-order power supply terminal. Therefore, according to the above configuration, the scanning direction can be set to a desired direction simply by short-circuiting the wiring in the mounting member, and thus the scanning direction can be set more easily. Further, according to the above configuration, since the scanning direction can be set by connecting the wiring in the mounting member, the scanning direction can be easily set even after the electro-optical device is manufactured.

  Further, according to the above configuration, even after the electro-optical device is manufactured, the scanning direction can be easily changed by changing the short-circuit destination of the wiring connected to the first control signal input terminal in the mounting member. can do. Moreover, according to the said structure, a scanning direction can also be easily changed by changing the short circuit destination of the wiring connected to the 1st control signal input terminal by exchanging a mounting member.

  In the electro-optical device, the first control signal input terminal may be electrically connected to the high-order power supply terminal or the low-order power supply terminal in the external drive circuit.

  According to the above configuration, for example, in a circuit board provided with an external drive circuit, the first control signal input terminal is electrically connected to the high-order power supply terminal or the low-order power supply terminal. In other words, according to the above configuration, the scanning direction can be set to a desired direction simply by short-circuiting the wiring on the circuit board or the like provided with the external drive circuit, and thus the scanning direction can be easily set. . According to the above configuration, the circuit board or the like may be provided with a switch or the like that switches, for example, whether the first control signal input terminal is electrically connected to the higher power supply terminal or the lower power supply terminal. it can.

  In the electro-optical device, it is preferable that the first control signal input terminal is provided between the high-order power supply terminal and the low-order power supply terminal. More preferably, the first control signal input terminal is provided adjacent to both the high-order power supply terminal and the low-order power supply terminal.

  According to the above configuration, since the first control signal input terminal is provided between the high-order power supply terminal and the low-order power supply terminal, it can be easily electrically connected to any power supply terminal. . For example, in the mounting member, when the wiring connected to the first control signal input terminal is short-circuited to the wiring connected to the high power supply terminal or the low power supply terminal, the high power supply terminal and the low power supply terminal are connected. Without straddling one of the connected wires, the other can be short-circuited. Moreover, according to the said structure, the short circuit destination of the wiring connected to the 1st control signal input terminal can be easily changed from the said other to the said one. Therefore, according to the above configuration, the scanning direction can be set more easily, and the scanning direction can be easily changed.

  In the electro-optical device, the plurality of input terminals include a second control signal input terminal to which a second control signal for determining a scanning direction for driving and scanning the pixels is supplied. A scanning line driving circuit for driving and a data line driving circuit for driving a data line. Both the scanning line driving circuit and the data line driving circuit support bidirectional shift, and the scanning line driving circuit The scanning line is driven based on one of the first control signal and the second control signal, and the data line driving circuit drives the data line based on the other of the first control signal and the second control signal. May be. The internal drive circuit includes a scan line drive circuit that drives the scan line and a data line drive circuit that drives the data line, and one of the scan line drive circuit and the data line drive circuit supports bidirectional shift. The first control signal may be supplied.

  In the above configuration, both the scanning line driving circuit and the data line driving circuit constituting the internal driving circuit support bidirectional shift, and each of the scanning line driving circuit and the data line driving circuit receives the first control signal or Based on the second control signal, the pixel is driven and scanned. Here, at least one of the first control signal terminal and the second control signal terminal is electrically connected to a power supply terminal to which power necessary for the operation of the scanning line driving circuit or power necessary for the operation of the data line driving circuit is supplied. Connected. Therefore, according to the above configuration, the scanning direction can be easily set even when both the scanning line driving circuit and the data line driving circuit support bidirectional shifting.

  In the electro-optical device, a power source necessary for the operation of the scanning line driving circuit and the data line driving circuit is common, and the first control signal input terminal and the second control signal input terminal are the same to which the power is supplied. The power supply terminal may be electrically connected. In this case, both the first control signal input terminal and the second control signal input terminal are combined into one input terminal, for example, between the two power supply terminals, for example, between the high power supply terminal and the low power supply terminal. May be provided.

  According to the above configuration, since the power necessary for the scanning line driving circuit and the data line driving circuit is common, both the first control signal input terminal and the second control signal input terminal are supplied with the common power. It is electrically connected to the power supply terminal. Therefore, according to the above configuration, the scanning direction indicated by each of the first control signal and the second control signal can be easily set with a simpler configuration.

  In the electro-optical device, the external drive circuit may generate the second control signal and supply the second control signal to the second control signal input terminal.

  According to the above configuration, for the direction in which the scanning direction does not need to be changed, the scanning direction is fixed by electrically connecting the control signal input terminal corresponding to the direction to the power supply terminal in the mounting member or the like. As for the direction of changing the scanning direction, the scanning direction can be changed by generating a control signal in the external drive circuit.

  In addition, an electronic apparatus of the present invention includes the electro-optical device. Here, the electronic device refers to a general device having a certain function provided with the electro-optical device according to the present invention, and there is no particular limitation on the configuration thereof, for example, a general computer device including the electro-optical device, Any device that requires an electro-optical device, such as a display device, a mobile phone, a PHS, a PDA, or an electronic notebook, is included.

Hereinafter, the present invention will be described through embodiments of the invention with reference to the drawings. However, the following embodiments do not limit the invention according to the claims, and are described in the embodiments. Not all combinations of features are essential for the solution of the invention.
In the following embodiment, an example in which the electro-optical device of the present invention is applied to a liquid crystal display device will be described as an example. However, the electro-optical device of the present invention is not limited to this, for example, an organic EL display It can also be applied to devices.

  FIG. 2 is a block diagram showing an electrical configuration of the first embodiment of the liquid crystal display device which is an example of the electro-optical device of the invention. With reference to the figure, first, the overall configuration of the liquid crystal display device of the present embodiment will be described. As shown in this figure, the liquid crystal display device includes a liquid crystal panel AA which is an example of an electro-optical panel, a flexible substrate B which is an example of a mounting member, and an external substrate C. The external substrate C includes a timing generation circuit 300, an image processing circuit 400, and a power supply circuit 500, which are examples of external drive circuits. The input image data D supplied to the liquid crystal display device is, for example, in a 3-bit parallel format. The timing generation circuit 300 generates a Y clock signal YCK, an inverted Y clock signal YCKB, an X clock signal XCK, an inverted X clock signal XCKB, a Y transfer start pulse DY, and an X transfer start pulse DX in synchronization with the input image data D. . The timing generation circuit 300 generates various timing signals for controlling the image processing circuit 400 and outputs them.

  The Y clock signal YCK specifies a period for selecting the scanning line 2, and the inverted Y clock signal YCKB is obtained by inverting the logic level of the Y clock signal YCK. The X clock signal XCK specifies a period for selecting the data line 3, and the inverted X clock signal XCKB is obtained by inverting the logic level of the X clock signal XCK.

  The image processing circuit 400 performs gamma correction and the like on the input image data D in consideration of the light transmission characteristics of the liquid crystal panel AA, and then D / A converts the image data of each RGB color to generate image signals 40R, 40G, and 40B. Is generated.

  The power supply circuit 500 supplies power to the timing generation circuit 300 and the image processing circuit 400 and generates power necessary for the operation of the bidirectional scanning line driving circuit 100 and the bidirectional data line driving circuit 200.

  The various control signals and power generated in this way are supplied to the liquid crystal panel AA via the flexible substrate B.

  The liquid crystal panel AA includes a terminal group 10, an image display area A, a bidirectional scanning line driving circuit 100, and a bidirectional data line driving circuit 200 on the element substrate. The terminal group 10 includes a plurality of power supply terminals and a plurality of input terminals (see FIGS. 3 to 6).

  The plurality of input terminals are examples of a Y control signal DIRY (hereinafter referred to as DIRY) and a second control signal that are examples of a first control signal that determines the scanning direction of the pixel via the flexible substrate B. Various control signals including an X control signal DIRX (hereinafter referred to as DIRX) are supplied. The plurality of power supply terminals include a high-order power supply VDDY (hereinafter referred to as VDDY) and a low-order power supply VSSY (hereinafter referred to as VSSY) necessary for the operation of the bidirectional scanning line driving circuit 100, and bidirectional data lines. A high power supply VDDX (hereinafter referred to as VDDY) and a low power supply VSSX (hereinafter referred to as VSSX) necessary for the operation of the drive circuit 200 are supplied.

  The bidirectional scanning line driving circuit 100 includes a Y shift register and a level shifter. The Y transfer start pulse DY, the Y clock signal YCK, and the inverted Y clock signal YCKB are supplied to the Y shift register. The Y shift register sequentially transfers the Y transfer start pulse DY in synchronization with the Y clock signal YCK and the inverted Y clock signal YCKB, and sequentially outputs the signal. The Y shift register is supplied with DIRY for determining the scanning direction of the pixel. The Y shift register determines the scanning direction based on DIRY, sequentially transfers the Y transfer start pulse DY, and sequentially transmits the signals. Output. For example, when the logic value of DIRY is positive logic, that is, when the potential of DIRY indicates VDDY, the Y shift register sequentially transfers a Y transfer start pulse DY in a predetermined direction on the y axis and sequentially outputs a signal, When the logic value of DIRY is negative logic, that is, when the potential of DIRY indicates VSSY, the Y transfer start pulse DY is sequentially transferred in a direction opposite to the predetermined direction and signals are sequentially output. The level shifter converts the signal amplitude into a large amplitude and outputs it to each scanning line 2 as scanning signals Y1, Y2,.

  The bidirectional data line driving circuit 200 samples the image signals 40R, 40G, and 40B at a predetermined timing to generate data line signals X1 to Xn and supplies them to the data lines 3. The bidirectional data line driving circuit 200 includes an X shift register, a level shifter, and a sampling circuit. The X shift register sequentially transfers the X transfer start pulse DX in synchronization with the X clock signal XCK and the inverted X clock signal XCKB to generate each output signal. The X shift register is supplied with DIRX that determines the scanning direction of the pixel. The X shift register determines the scanning direction based on DIRX, sequentially transfers the X transfer start pulse DX, and outputs each output signal. Is generated. For example, when the logic value of DIRX is positive logic, that is, when the potential of DIRX indicates VDDX, the X shift register sequentially transfers the X transfer start pulse DX in a predetermined direction on the x axis and sequentially outputs each output signal. When the logic value of DIRX is negative logic, that is, when the potential of DIRX indicates VSSX, the X transfer start pulse DX is sequentially transferred in the direction opposite to the predetermined direction, and the signals are sequentially output.

  The level shifter converts the level of each output signal of the X shift register and sequentially generates each sampling signal SR1 to SRn. The sampling circuit includes n switches SW1 to SWn. Each switch SW1-SWn is comprised by TFT. When the sampling signals SR1 to SRn supplied to the gate are sequentially activated, the switches SW1 to SWn are sequentially turned on. Then, the image signals 40R, 40G, and 40B supplied via the flexible substrate B are sampled. Then, data line signals X1 to Xn as sampling results are sequentially supplied to the data line 3.

  Next, in the image display area A, as shown in FIG. 2, m (m is a natural number of 2 or more) scanning lines 2 are formed in parallel along the X direction, while n (N is a natural number of 2 or more) The data lines 3 are arranged in parallel along the Y direction. In the vicinity of the intersection of the scanning line 2 and the data line 3, the gate of the TFT 50 is connected to the scanning line 2, while the source of the TFT 50 is connected to the data line 3 and the drain of the TFT 50 is connected to the capacitive element 51 and Connected to the pixel electrode 6. Each pixel includes a pixel electrode 6, a counter electrode formed on the counter substrate, and a liquid crystal sandwiched between the two electrodes. As a result, the pixels are arranged in a matrix corresponding to each intersection of the scanning line 2 and the data line 3.

  Further, scanning signals Y1, Y2,..., Ym are applied to each scanning line 2 to which the gate of the TFT 50 is connected in a pulse-by-line manner. For this reason, when a scanning signal is supplied to a certain scanning line 2, the TFT 50 connected to the scanning line is turned on, so that data line signals X1, X2,. Are sequentially written in the corresponding pixels and then held for a predetermined period.

  Since the orientation and order of liquid crystal molecules change according to the potential level applied to each pixel, gradation display by light modulation becomes possible. For example, in the normally white mode, the amount of light passing through the liquid crystal is limited as the applied potential is increased. In the normally black mode, the amount of light is reduced as the applied potential is increased. As a whole, light having contrast according to the image signal is emitted for each pixel. For this reason, a predetermined display becomes possible.

  FIG. 3 is a plan view showing the flexible substrate B and its peripheral configuration. With reference to FIG. 3, the detailed configuration of the flexible substrate B and its periphery in the liquid crystal display device of the first embodiment will be described. The flexible substrate B includes a base 210 and a wiring group 12 provided under the base 210. The wiring group 12 is necessary for the operation of the bidirectional data line driving circuit 200 and the wirings 32A and 34A generated by the power supply circuit 500 and supplied with VDDY and VSSY necessary for the operation of the bidirectional scanning line driving circuit 100, respectively. The wirings 32B and 34B to which VDDX and VSSX are supplied are configured. The wiring group 12 includes wirings 30A and 30B to which DIRY and DIRX are respectively supplied.

  The substrate 210 can be made of a material having high elasticity such as polyimide, for example. The lower surface of the wiring group 12 provided under the substrate 210 is covered with a resist or the like so that unnecessary short-circuiting is prevented. At the end of each wiring constituting the wiring group 12, the wiring and the terminal group 10 are electrically connected via an anisotropic conductive film or the like.

  The terminal group 10 provided in the liquid crystal panel AA includes a DIRY input terminal 20A that is an example of a first control signal input terminal, a DIRX input terminal 20B that is an example of a second control signal input terminal, and an example of a high-order power supply terminal. VDDY power supply terminal 22A and VDDX power supply terminal 22B, and VSSY power supply terminal 24A and VSSX power supply terminal 24B which are examples of the lower power supply terminal. The DIRY input terminal 20A and DIRX input terminal 20B are connected to wirings 30A and 30B, respectively. The VDDY power supply terminal 22A, VDDX power supply terminal 22B, VSSY power supply terminal 24A, and VSSX power supply terminal 24B are connected to wirings 32A, 32B, respectively. 34A and 34B are connected.

  The DIRY input terminal 20A, the VDDY power supply terminal 22A, and the VSSY power supply terminal 24A are connected to the bidirectional scanning line driving circuit 100, and DIRY, VDDY, and VSSY are supplied to the bidirectional scanning line driving circuit 100. Further, the DIRX input terminal 20B, the VDDX power supply terminal 22B, and the VSSX power supply terminal 24B are connected to the bidirectional data line driving circuit 200, and DIRX, VDDX, and VSSX are supplied to the bidirectional data line driving circuit 200. Specifically, DIRY, VDDY, and VSSY are supplied to a shift register that constitutes the bidirectional scanning line driving circuit 100, and DIRX, VDDX, and VSSX are shifted to constitute the bidirectional data line driving circuit 200. It is supplied to the register.

  The DIRY input terminal 20A is electrically connected to either the VDDY power supply terminal 22A or the VSSY power supply terminal 24A. That is, either VDDY or VSSY is supplied as DIRY to the DIRY input terminal 20A. In the present embodiment, as an example, the DIRY input terminal 20A is electrically connected to the VDDY power supply terminal 22A, and VDDY is supplied as DIRY to the DIRY input terminal 20A.

  Specifically, the wiring 30A connected to the DIRY input terminal 20A is short-circuited with the wiring 32A connected to the VDDY power supply terminal 22A on the flexible substrate B, so that the DIRY input terminal 20A is connected to the VDDY power supply terminal 22A. Electrically connected. That is, the wiring 30A is connected to the wiring 32A and the DIRY input terminal 20A, and VDDY is supplied to the DIRY input terminal 20A as DIRY.

  The DIRX input terminal 20B is electrically connected to either the VDDX power supply terminal 22B or the VSSX power supply terminal 24B. That is, either one of VDDX and VSSX is supplied as DIRX to the DIRX input terminal 20B. In the present embodiment, as an example, the DIRX input terminal 20B is electrically connected to the VDDX power supply terminal 22B, and VDDX is supplied as DIRX to the DIRX input terminal 20B.

  Specifically, the wiring 30B connected to the DIRX input terminal 20B is short-circuited with the wiring 32B connected to the VDDX power supply terminal 22B in the flexible substrate B, so that the DIRX input terminal 20B is connected to the VDDX power supply terminal 22B. Electrically connected. That is, the wiring 30B is connected to the wiring 32B and the DIRX input terminal 20B, and VDDX is supplied to the DIRX input terminal 20B as DIRX.

  According to the present embodiment, the DIRY input terminal 20A and the DIRX input terminal 20B are electrically connected to the power supply terminal, and the power supplied to the power supply terminal is set to DIRY and DIRX, respectively. 100 and the bidirectional data line driving circuit 200, it is not necessary to provide a configuration for generating a signal for determining the scanning direction of the pixel on the external substrate C. Therefore, according to the present embodiment, it is possible to provide an electro-optical device that has a simple configuration and is inexpensive. Further, according to the present embodiment, the scanning direction can be easily set or changed to a desired direction simply by short-circuiting the DIRY input terminal 20A and the DIRX input terminal 20B to a power supply terminal that supplies a desired voltage. .

  In addition, the wirings 30A and 30B are preferably connected to the wirings 32A or 34A and 32B or 34B in the vicinity of the liquid crystal panel AA, respectively. Thereby, even in the case where a plurality of wirings are adjacent to each other and extend in parallel on the flexible substrate B, it is possible to reduce the risk of noise on DIRY and DIRX that determine the scanning direction. Therefore, the scanning directions of the bidirectional scanning line driving circuit 100 and the bidirectional data line driving circuit 200 can be set stably.

  The DIRY input terminal 20A is preferably provided adjacent to the VDDY power supply terminal 22A and the VSSY power supply terminal 24A. Similarly, the DIRX input terminal 20B is desirably provided adjacent to the VDDX power supply terminal 22B and the VSSX power supply terminal 24B. Specifically, in the present embodiment, the DIRY input terminal 20A is provided adjacent to the VDDY power supply terminal 22A and the VSSY power supply terminal 24A between the VDDY power supply terminal 22A and the VSSY power supply terminal 24A. Similarly, the DIRX input terminal 20B is provided adjacent to the VDDX power supply terminal 22B and the VSSX power supply terminal 24B between the VDDX power supply terminal 22B and the VSSX power supply terminal 24B.

  According to the present embodiment, the DIRY input terminal 20A and the DIRX input terminal 20B are provided adjacent to the VDDY power supply terminal 22A and the VSSY power supply terminal 24A, and the VDDX power supply terminal 22B and the VSSX power supply terminal 24B, respectively. The wirings 30A and 30B connected to the input terminal 20A and the DIRX input terminal 20B are also provided adjacent to the wirings 32A and 34A and 32B and 34B. Therefore, according to the present embodiment, since the DIRY input terminal 20A and the DIRX input terminal 20B can be easily electrically connected to any of the adjacent power supply terminals, the scan direction can be easily set or changed. Can do.

  FIG. 4 is a diagram showing the flexible substrate B and its peripheral configuration in the liquid crystal display device according to the second embodiment. In the following, the flexible substrate B and the like of the second embodiment will be described focusing on differences from the first embodiment. Note that the overall configuration of the liquid crystal display device of the present embodiment is the same as that of the first embodiment, and configurations having the same reference numerals as those of the first embodiment have the same configurations and functions as those of the first embodiment.

  In the present embodiment, the DIRY input terminal 20A and the DIRX input terminal 20B are electrically connected to the VDDY power supply terminal 22A or VSSY power supply terminal 24A and the VDDX power supply terminal 22B or VSSX power supply terminal 24B, respectively, on the external substrate C. . In FIG. 4, as an example, the wiring 30A connected to the DIRY input terminal 20A is short-circuited with the wiring 32A connected to the VDDY power supply terminal 22A on the external substrate C, so that the DIRY input terminal 20A becomes the VDDY power supply terminal. 22A is electrically connected. Similarly, the wiring 30B connected to the DIRX input terminal 20B is short-circuited with the wiring 32B connected to the VDDX power supply terminal 22B on the external substrate C, so that the DIRX input terminal 20B is connected to the VDDX power supply terminal 22B. Electrically connected.

  According to the present embodiment, the DIRY input terminal 20A and the DIRX input terminal 20B are connected to the VDDY power supply terminal 22A or the VSSY power supply terminal 24A and the VDDX power supply terminal 22B, respectively, with a simple configuration in which the wiring is short-circuited on the external substrate C. Since it can be electrically connected to the VSSX power supply terminal 24B, the scanning direction can be easily set or changed to a desired direction.

  Further, according to the present embodiment, on the external substrate C, for example, the DIRY input terminal 20A and DIRX input terminal 20B are connected to the VDDY power supply terminal 22A or VSSY power supply terminal 24A, and the VDDX power supply terminal 22B or VSSX power supply terminal 24B, respectively. A switch or the like for switching which one to electrically connect to can be provided. Therefore, according to this embodiment, the scanning direction can be easily changed to a desired direction.

  FIG. 5 is a diagram showing the flexible substrate B and its peripheral configuration in the liquid crystal display device according to the third embodiment. In the following, the flexible substrate B and the like of the third embodiment will be described focusing on differences from the first and second embodiments. The overall configuration of the liquid crystal display device of the present embodiment is the same as that of the first embodiment, and the configurations denoted by the same reference numerals as those of the first and second embodiments are the same as those of the first embodiment. It has a function.

  In the present embodiment, the power supply circuit 500 generates a common high power supply VDD and low power supply VSS as power supplies to be supplied to the bidirectional scanning line drive circuit 100 and the bidirectional data line drive circuit 200 (see FIG. 1). . That is, in the terminal group 10, VDD is supplied to both the VDDY power supply terminal 22A and the VDDX power supply terminal 22B as a high power supply, and the low power supply is supplied to both the VSSY power supply terminal 24A and the VSSX power supply terminal 24B. VSS is supplied.

  In FIG. 5, as an example, the DIRY input terminal 20A and the DIRX input terminal 20B are electrically connected to the VDDY power supply terminal 22A and the VDDX power supply terminal 22B, respectively, and VDD becomes DIRY and DIRX as DIRY input terminal 20A and It is supplied to both DIRX input terminals 20B. In the present embodiment, a VDDY power supply terminal 22A and a VSSY power supply terminal 24A, and a VDDX power supply terminal 22B and a VSSX power supply terminal 24B are provided for both the DIRY input terminal 20A and the DIRX input terminal 20B, respectively. A set of a high-order power supply terminal (VDD power supply terminal) and a low-order power supply terminal (VSS power supply terminal) may be provided for both the input terminal 20A and the DIRX input terminal 20B. For example, the DIRY input terminal 20A and the DIRX input terminal 20B are provided between the VDD power supply terminal and the VSS power supply terminal.

  According to the present embodiment, since the power source necessary for the operation of the bidirectional scanning line driving circuit 100 and the bidirectional data line driving circuit 200 is common, the configuration of the external substrate C can be further simplified, and the pixel The scanning direction can be easily set or changed.

  FIG. 6 is a diagram illustrating the flexible substrate B and its peripheral configuration in the liquid crystal display device according to the fourth embodiment. In the following, the flexible substrate B and the like of the fourth embodiment will be described focusing on differences from the first to third embodiments. Note that the overall configuration of the liquid crystal display device of this embodiment is the same as that of the first embodiment, and the configurations denoted by the same reference numerals as those of the first and second embodiments are the same as those of the first embodiment. It has a function.

  In the present embodiment, the timing generation circuit 300 generates one of DIRY and DIRX. That is, one of the DIRY input terminal 20A and the DIRX input terminal 20B is electrically connected to the VDDY power supply terminal 22A or the VSSY power supply terminal 24A, or the VDDX power supply terminal 22B or the VSSX power supply terminal 24B, and the other is the timing. DIRY or DIRX generated by the generation circuit 300 is supplied.

  In FIG. 6, as an example, the timing generation circuit 300 generates DIRY and supplies DIRY to the wiring 30 </ b> A connected to the external substrate C. On the other hand, the DIRX input terminal 20B is electrically connected to the VDDX power supply terminal 22B, and VDDX is supplied as DIRX to the DIRX input terminal 20B. Also, the DIRY input terminal 20A may not be provided adjacent to the VDDY power supply terminal 22A and / or the VSSY power supply terminal 24A. The DIRY input terminal 20A may not be provided between the VDDY power supply terminal 22A and the VSSY power supply terminal 24A.

  According to the present embodiment, for a direction in which the scanning direction does not need to be changed, the DIRY input terminal 20A or DIRX input terminal 20B corresponding to the direction is replaced with the VDDY power supply terminal 22A or the VSSY power supply terminal 24A, or the VDDX power supply terminal 22B. Alternatively, the scanning direction is fixed by electrically connecting to the VSSX power supply terminal 24B, and the scanning direction is changed by generating DIRY or DIRX in the timing generation circuit 300 for the direction in which the scanning direction needs to be changed. Can do.

  FIG. 7 is a perspective view showing a configuration of a personal computer 1000 which is an example of the electronic apparatus of the present invention. In FIG. 7, the personal computer 1000 is configured to include a display panel 1002 and a main body 1006 having a keyboard 1004. The electro-optical device of the present invention is used in the display panel 1002 of the personal computer 1000.

  The examples and application examples described through the embodiments of the present invention can be used in appropriate combination according to the application, or can be used with modifications or improvements, and the present invention is limited to the description of the above-described embodiments. It is not something. For example, in the above-described embodiment, the example in which the single-phase DIRY and / or DIRX is supplied to the liquid crystal panel AA and the positive / negative logic signal is generated inside the liquid crystal panel AA has been described. The examples and application examples described in the above embodiment can be applied to the configuration for supplying the power. It is apparent from the description of the scope of claims that the embodiments added with such combinations or changes or improvements can be included in the technical scope of the present invention.

It is a figure which shows the conventional electro-optical apparatus. 1 is a block diagram showing a first embodiment of a liquid crystal display device which is an example of an electro-optical device of the invention. FIG. It is a top view which shows the flexible substrate B and its periphery structure. It is a figure which shows 2nd Embodiment of the flexible substrate B and its periphery structure. It is a figure which shows 3rd Embodiment of the flexible substrate B and its periphery structure. It is a figure which shows 4th Embodiment of the flexible substrate B and its periphery structure. 1 is a perspective view illustrating a configuration of a personal computer 1000 which is an example of an electronic apparatus according to the invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Terminal group, 20A ... DIRY input terminal, 20B ... DIRX input terminal, 22A ... VDDY power supply terminal, 22B ... VDDX power supply terminal, 24A ... VSSY power supply terminal, 24B ... VSSX power supply terminal, 30A to 34B ... wiring, 100 ... bidirectional scanning line driving circuit, 200 ... bidirectional data line driving circuit, 210 ... base material, 300 ... timing generating circuit, 400: Image processing circuit, 500: Power supply circuit, AA: Liquid crystal panel, B: Flexible substrate, C: External substrate, D: Input image data, DIRY ... Y control Signal, DIRX ... X control signal, VDD, VDDY, VDDX ... higher power supply, VSS, VSSY, VSSSX ... lower power supply

Claims (1)

A plurality of scanning lines, a plurality of data lines, a plurality of pixels provided corresponding to intersections of the scanning lines and the data lines, an internal driving circuit for driving the pixels based on an input signal, and power are supplied. An electro-optical panel having a plurality of power supply terminals and a plurality of input terminals to which the input signal is supplied, and capable of switching the display image up and down or left and right;
An external drive circuit provided on an external substrate separate from the electro-optical panel, and having a circuit for generating the power source and the input signal;
And a mounting member for connecting each of the plurality of power supply terminals and the plurality of input terminals of the electro-optical panel through a plurality of wiring the power supply and the input signal of the external drive circuit,
The internal driving circuit includes a scanning line driving circuit capable of bidirectional shift that determines a shift direction corresponding to a first control signal, and a bidirectional shift capable of determining a shift direction corresponding to a second control signal. A data line driving circuit,
The plurality of input terminals include first and second control signal input terminals to which first and second control signals for determining a scanning direction for driving and scanning the pixels are respectively supplied. A method,
The mounting member, those plurality of kinds of setting the presence or absence of electrical connection between the high-potential power supply terminal or the low-potential power supply terminal of each said power supply terminals of said first and second control signal input terminal in the wiring The mounting member prepared in advance and to be connected corresponding to the switching of the display image is selected , and between the output side of the external drive circuit and the plurality of power supply terminals and the plurality of input terminals of the electro-optical panel A method of manufacturing an electro-optical device, wherein

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