Display device and method for driving display device

Abstract

A display device having a plurality of display regions and reduced power consumption is provided. A display device is provided with: a substrate having, on a main surface thereof, a display region (DR) including three or more divided regions (DR1-DR3) arranged in a first direction; a scan line (GL) extending in the first direction, a data line (SL) extending in the second direction, a plurality of pixels (PX), and a scan line connection wiring (BL) extending in the second direction, which are disposed on each of the divided regions; the data line driving circuits are respectively connected with the data lines of the segmentation areas; and a plurality of scan line drive circuits (60) corresponding to the divided regions. The scanning line driving circuits and the data line driving circuits (70) are arranged in the first direction on the outer side of the display area, and the scanning line connecting wires electrically connect the scanning line driving circuits and the scanning lines. The scan line drive circuit and the data line drive circuit display images at mutually different frame rates in at least a pair of adjacent divided regions among the three or more divided regions.

Description

Technical Field

[0001] The present disclosure relates to a display device and a method for driving the display device. Background Art

[0002] Display devices such as liquid crystal display devices and organic EL display devices are widely used in various fields. For example, in the field of vehicles, information such as speed and rotation speed is displayed on display devices to replace the mechanical speedometers and rotation speedometers used in the past.

[0003] For example, Patent Document 1 discloses a vehicle including a display device located in front of a driver's seat and displaying speed, rotation speed, etc., and a display device located on the passenger seat side and displaying map information, movies, etc. Prior art literature Patent Literature

[0004] Patent Document 1: Japanese Patent Application Publication No. 2022-072294 Summary of the invention Technical Problems to be Solved by the Invention

[0005] When the number of display devices mounted on a vehicle increases, the increase in power consumption caused by the display devices becomes a problem. The present disclosure aims to provide a display device having a plurality of display areas and reduced power consumption, and a method for driving the display device. Technical solutions for solving technical problems

[0006] A display device or a method for driving a display device according to an embodiment of the present disclosure comprises: a substrate having a main surface, the main surface having a display area and a non-display area located around the display area, the display area including three or more segmented areas arranged adjacent to each other along a first direction; a plurality of scan lines, respectively arranged in each segmented area, the plurality of scan lines extending along the first direction and arranged along a second direction intersecting the first direction; a plurality of data lines, respectively arranged in each segmented area, the plurality of data lines extending along the second direction and arranged along the first direction; a plurality of pixels, respectively arranged in each segmented area, and respectively arranged in an area surrounded by a pair of data lines among the plurality of data lines and a pair of scan lines among the plurality of scan lines; a plurality of scan line connection wirings, respectively arranged in each segmented area and extending along the second direction, and arranged along the first direction; a plurality of data line driving circuits, respectively connected to a plurality of data lines in the respective divided areas; a plurality of scan line driving circuits corresponding to the respective divided areas; a control device; and a plurality of start signal wirings, independently connecting the scan line driving circuits corresponding to the respective divided areas and the control device; the plurality of scan line driving circuits and the plurality of data line driving circuits are respectively arranged along the first direction outside the display area, the respective scan line connection wirings electrically connect the scan line driving circuit and one of the plurality of scan lines, the control device independently outputs a start signal to the start signal wiring connected to the scan line driving circuits in the respective divided areas, the scan line driving circuit and the data line driving circuit display images at frame frequencies different from each other in at least a pair of adjacent divided areas among the more than three divided areas. Beneficial Effects

[0007] According to one embodiment of the present disclosure, a display device having a plurality of display areas and reduced power consumption and a method for driving the display device are provided. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram showing an instrument panel of a vehicle equipped with the display device according to the first embodiment. Figure 2A It is a schematic cross-sectional view showing the structure of a display device. Figure 2B It is a schematic cross-sectional view showing another structure of the display device. Figure 3 is a plan view of the substrate. Figure 4A A schematic plan view showing an active matrix substrate. Figure 4B A schematic plan view showing another configuration example of an active matrix substrate. Figure 5This is a circuit diagram showing an example of the configuration of a pixel. Figure 6 The arrangement of the scanning lines, the scanning line connecting wirings, and the connection points CP in each divided area is shown. Figure 7 (a) to (c) and (d) to (f) are schematic diagrams showing the brightness of pixels near the boundary line between the first divided area and the second divided area, the applied scanning signal, and the equivalent circuit diagram of the parasitic capacitance and the parasitic resistance, respectively. Figure 8 (a) to (c) and (d) to (f) are schematic diagrams showing the brightness of pixels near the boundary line between the second divided area and the third divided area, the applied scanning signal, and the equivalent circuit diagram of the parasitic capacitance and the parasitic resistance, respectively. Fig. 9 Another example of arrangement of scan lines, scan line connection wirings, and connection points CP is shown. Fig.10 (a) to (c) and (d) to (f) represent Fig. 9 Schematic diagram of the equivalent circuit diagram of the luminance of the pixel near the boundary line between the first divided area and the second divided area in the illustrated configuration example, the applied scanning signal, and the parasitic capacitance and the parasitic resistance. Fig.11 Another example of arrangement of scan lines, scan line connection wirings, and connection points CP is shown. Fig.12 (a) to (c) and (d) to (f) represent Fig.11 Schematic diagram of the equivalent circuit diagram of the luminance of the pixel near the boundary line between the first divided area and the second divided area in the illustrated configuration example, the applied scanning signal, and the parasitic capacitance and the parasitic resistance. Fig.13A This is a plan view showing an enlarged portion of an active matrix substrate. Fig. 13B This is a plan view showing an enlarged portion of another configuration example of an active matrix substrate. Fig.14 This is a diagram for explaining the overlap of scanning lines between adjacent divided areas. Fig.15 express Fig.13A FIG. 2 is an example of a cross-sectional structure of a liquid crystal display device taken along line AA. Fig.16 This is a schematic enlarged plan view of an active matrix substrate further including dummy scanning line connection wiring. Fig.17 It is a plan view showing another configuration example of the scanning line driver circuit. Fig.18 It is a plan view showing another configuration example of the scanning line driver circuit. Fig.19The following diagram shows the timing of scanning scanning lines when the three divided regions in the second embodiment each display an independent image. Fig. 20 Indicates the scanning timing of the second divided area and the timing of the clock signal and the data signal. Fig.21 The timing of scanning a scanning line when each divided area displays an independent image in the third embodiment is shown. Fig. 22 The timing of scanning the scanning lines in the three divided regions in the third embodiment is shown. Fig.23 The timing of scanning the scanning lines according to another example of the driving method is shown. Fig.24 The timing of scanning a scanning line according to another example of a driving method is shown. Fig.25 This is a block diagram collectively showing control signals for driving pixels. DETAILED DESCRIPTION

[0009] In the case where there are multiple display devices mounted on a vehicle, if the display devices can be centrally arranged in one place in a manner that the display areas are connected, it is possible to provide an excellent appearance such as displaying an integrated image in multiple display areas as needed. For example, if the display device for displaying speed, rotation speed, etc. in Patent Document 1 and the display device extending from the driver's seat to the passenger seat side and displaying map information, movies, etc. are integrally configured, it is possible to provide an excellent interior appearance design or obtain an excellent display effect.

[0010] On the other hand, when the number of display areas of a display device increases and the overall area of ​​the display area becomes larger, power consumption may also increase. In vehicles such as hybrid vehicles and electric vehicles that use electric motors as a driving source, it is preferred that the power consumption of the display device is small so that the cruising range can be extended as much as possible. In view of such technical problems, the present invention has conceived a novel display device and a driving method for the display device that can suppress power consumption.

[0011] (First Embodiment) Hereinafter, the present embodiment will be described based on the accompanying drawings. The present disclosure is not limited to the following embodiments, and design changes can be appropriately made within the scope of the configuration of the present disclosure. In addition, in the following description, for the same parts or parts with the same functions, the same figure marks are used in common between different drawings, and their repeated descriptions are sometimes omitted. In addition, the various configurations described in the embodiments and modifications can be appropriately combined or changed within the scope of the main purpose of the present disclosure. In order to facilitate the understanding of the description, in the drawings referred to below, the configuration is sometimes simplified or schematically represented, or a part of the components is omitted. In addition, the size ratios between the components shown in the various figures do not necessarily represent the actual size ratios.

[0012] Figure 1 1 is a schematic diagram showing a dashboard 200 of a vehicle equipped with a display device 101 of the present embodiment. The dashboard 200 is located in the front part of the interior of the vehicle. The display device 101 is arranged from the driver's seat 201 to the passenger seat 202 on the upper part of the dashboard. That is, the display device 101 is located in front of the driver's seat 201 and the passenger seat 202 and is an integrated device.

[0013] The display device 101 may be any flat panel display. For example, the display device 101 may be a liquid crystal display device, an organic EL display device, an LED display device, or an electronic paper. In this embodiment, the display device 101 is a liquid crystal display device.

[0014] Figure 2A 1 is a schematic cross-sectional view showing a configuration in which the display device 101 is a liquid crystal display device. The display device 101 includes a liquid crystal panel 50 and a control device 90. The liquid crystal panel 50 includes an active matrix substrate 40, a counter substrate 80, and a liquid crystal layer 81.

[0015] The active matrix substrate 40 includes a substrate 10 having a main surface 10a. As described in detail below, the main surface 10a includes a display region DR and a non-display region NR located around the display region DR so as to surround the display region DR. The display region DR is a region that contributes to image display, and the non-display region is a region that does not display an image.

[0016] As described in detail below, the active matrix substrate 40 includes a plurality of scanning lines, a plurality of data lines, and a plurality of pixels. Each pixel is connected to one of the plurality of scanning lines and one of the plurality of data lines.

[0017] The active matrix substrate 40 and the counter substrate 80 are bonded at a predetermined interval via a sealant 82 disposed in the non-display region NR, and a liquid crystal layer 81 is disposed between the active matrix substrate 40 and the counter substrate 80 and in a region surrounded by the sealant 82. In this embodiment, a color filter is disposed on the surface of the counter substrate 30 on the liquid crystal layer 81 side. However, the color filter may also be disposed on the active matrix substrate 40.

[0018] The liquid crystal panel 50 further includes a plurality of scan line driving circuits 60 and a plurality of data line driving circuits 70. The scan line driving circuits 60 and the data line driving circuits 70 are disposed in an area outside the display area DR of the substrate 10 to drive the scan lines and the data lines, respectively. In this embodiment, the scan line driving circuits 60 are disposed in the non-display area NR. On the other hand, the data line driving circuits 70 are disposed on the flexible substrate 51. Figure 2B As shown, a plurality of data line driving circuits 70 may also be mounted in the non-display region NR of the substrate 10 .

[0019] The control device 90 includes a substrate 91 and a timing controller 92 mounted on the substrate 91. The control device 90 is connected to the active matrix substrate 40 through the flexible substrate 51. The timing controller 92 receives a video signal from an external host computer and generates a start signal and an image signal. The generated start signal and image signal are output to the scan line drive circuit 60 and the data line drive circuit 70.

[0020] The display device 101 further includes a pair of polarizing plates 96 and a backlight 95. The pair of polarizing plates 96 are located between the active matrix substrate 40 and the counter substrate 80. The backlight 95 is disposed so as to face one of the pair of polarizing plates 96.

[0021] Figure 3 : is a plan view of the substrate 10. The substrate 10 has a length direction in the x-axis direction (first direction) which is more transverse than the y-axis direction (second direction) which is the longitudinal direction. The shape of the substrate 10 is not particularly limited as long as the first direction is the long side, and it can be, for example, a rectangle, an elongated circle, or an ellipse. In the present embodiment, in a rectangle whose x-axis direction is the long side direction, the substrate 10 has a shape in which the two upper corners arranged in the x-axis direction are rounded.

[0022] The main surface 10a has a display region DR and a non-display region NR as described above. In the present embodiment, the display region DR has a shape roughly similar to the outer shape of the substrate 10, that is, a shape in which two upper corners arranged in the x-axis direction are rounded in a rectangle whose length direction is the x-axis direction. The non-display region NR is located around the display region DR. In the present embodiment, the non-display region NR surrounds the display region.

[0023] The display region DR includes more than three segmented regions arranged adjacently along the x-axis direction. In the present embodiment, the display region DR includes a first segmented region DR1, a second segmented region DR2, and a third segmented region DR3. The second segmented region DR2 is located between the first segmented region DR1 and the third segmented region DR3, and the third segmented region DR3 is located on the positive side of the first segmented region DR1 in the x-axis direction. The first segmented region DR1 and the second segmented region DR2 are divided by a boundary line BD12, and the second segmented region DR2 and the third segmented region DR3 are divided by a boundary line BD23. The boundary line BD12 and the boundary line BD23 are parallel to the y-axis direction.

[0024] The first divided region DR1 and the third divided region DR3 have rectangular shapes with rounded corners, whereas the second divided region DR2 has a rectangular shape. Therefore, in the present embodiment, in the display region DR, two adjacent divided regions have different shapes.

[0025] like Figure 3 As shown, in each segmented region, the maximum width in the x-axis direction is greater than the maximum height in the y-axis direction. In the first segmented region DR1, the maximum width w1 is greater than the maximum height h1. Similarly, in the second segmented region DR2, the maximum width w2 is greater than the maximum height h2, and in the third segmented region DR3, the maximum width w3 is greater than the maximum height h3. In other words, the relationships w1>h1, w2>h2, and w3>h3 are satisfied, respectively. In addition, in this embodiment, h1=h2=h3, satisfying the relationship w3>w1>w2.

[0026] Figure 4A Schematic plan view of the active matrix substrate 40 is shown. Figure 4A In the figure, for the sake of easy understanding, the first divided region DR1 and the second divided region DR2 are represented by rectangles. In addition, for the sake of easy explanation, the first divided region DR1, the second divided region DR2, and the third divided region DR3 are represented by the same shape.

[0027] The active matrix substrate 40 includes a plurality of scanning lines GL, a plurality of data lines SL, a plurality of scanning line connection wirings BL, and a plurality of pixels PX in each of the first divided region DR1 , the second divided region DR2 , and the third divided region DR3 .

[0028] In each divided area, a plurality of scanning lines GL extend in the x-axis direction and are arranged in the y-axis direction. In addition, a plurality of data lines SL extend in the y-axis direction and are arranged in the x-axis direction. A plurality of scanning line connection wirings BL extend in the y-axis direction and are arranged in the x-axis direction. The scanning lines GL in each divided area are not connected to the scanning lines GL in the adjacent divided area.

[0029] Figure 5 is a circuit diagram showing an example of the configuration of a pixel PX. Each pixel PX is respectively arranged in an area surrounded by a pair of data lines SL among a plurality of data lines SL and a pair of scanning lines GL among the plurality of scanning lines GL. The pixel PX includes a TFT and a pixel electrode PE. Specifically, the gate of the TFT is connected to the scanning line GL, the source is connected to the data line SL, and the drain is connected to the pixel electrode.

[0030] like Figure 4A As shown, a plurality of scanning line driving circuits 60 are respectively arranged corresponding to the first divided region DR1, the second divided region DR2, and the third divided region DR3. In addition, a plurality of data line driving circuits 70 are also respectively arranged corresponding to the first divided region DR1, the second divided region DR2, and the third divided region DR3.

[0031] A plurality of scan line driving circuits 60 and a plurality of data line driving circuits 70 are arranged along the x-axis direction outside the display area DR. In the present embodiment, the scan line driving circuits 60 and the data line driving circuits 70 are respectively located between the first divided area DR1, the second divided area DR2, and the third divided area DR3, and are arranged in the x-axis direction. The scan line driving circuit 60 is arranged in the non-display area NR which is located on the positive side of each divided area in the y-axis direction. On the other hand, the data line driving circuit 70 is arranged on the flexible substrate 51, and the flexible substrate 51 is connected to the non-display area NR which is located on the negative side of each divided area in the y-axis direction. However, as Figure 4B As shown, a plurality of data line driving circuits 70 may also be disposed in the non-display region NR.

[0032] In this embodiment, the scan line driving circuit 60 is formed integrally (monolithically) with the substrate 10. For example, the scan line driving circuit 60 includes a plurality of TFTs, which are formed simultaneously with the TFTs of the pixels PX. The scan line driving circuit 60 is composed of a bare chip or a packaged chip, and can also be installed in the non-display area NR of the substrate 10. The scan line driving circuit 60 is composed of a bare chip or a packaged chip, and can also be installed on a flexible substrate, which is installed in the non-display area NR of the substrate 10.

[0033] The data line driving circuit 70 is composed of a bare chip or a packaged chip and is mounted on the flexible substrate 51. The data line driving circuit 70 is composed of a bare chip or a packaged chip and may be mounted in the non-display region NR of the substrate 10.

[0034] exist Figure 4AIn the figure, in each divided area, the scanning line driving circuit 60 is represented as two elements, but the number of scanning line driving circuits in each divided area can be 1 or divided into 3 or more. The data line driving circuit 70 is also represented as four elements in each divided area, but the number of scanning line driving circuits in each divided area can be 1 to 3 or 5 or more.

[0035] In each divided area, one end of the plurality of data lines SL extends to the non-display area NR, and is connected to the data line driving circuit 70 via the wiring formed on the flexible substrate 51. In addition, one end of the plurality of scan line connection wirings BL extends to the non-display area NR, and is connected to the scan line driving circuit 60 of each divided area. Each of the plurality of scan line connection wirings BL is connected at a connection point CP arranged at a position intersecting with one of the plurality of scan lines GL. In the present embodiment, for redundancy, a pair of adjacent scan line connection wirings BL is connected to the same scan line GL. The same scan signal is applied to the pair of adjacent scan line connection wirings BL. By adopting such a configuration, when manufacturing the display device 101, even if one scan line connection wiring BL is broken or the connection point CP between the scan line connection wiring BL and the scan line GL is poor, the connection between the scan line driving circuit and the scan line GL can be ensured by using another scan line connection wiring BL.

[0036] As described later, the scan line connection wiring BL is arranged in the pixel, so the aperture ratio of the pixel is reduced. Therefore, it is preferable that the scan line connection wiring BL extends from the scan line driving circuit 60 side across the connection point CP in the y-axis direction to the opposite side of the scan line driving circuit 60 so that the aperture ratio of the pixels arranged along the y-axis direction does not change significantly. For example, it is preferable that in each divided area, more than 70% of the scan line connection wirings among the plurality of scan line connection wirings have a length of more than 70% of the y-axis width of the display area.

[0037] In addition, it is preferable that the number of the plurality of scanning lines GL arranged in one of a pair of adjacent divided areas is equal to the number of the plurality of scanning lines arranged in the other of the pair of divided areas. Thus, in a pair of adjacent divided areas, the number of pixels in the y-axis direction is equal. If the heights of the divided areas in the y-axis direction are equal, when the first divided area DR1, the second divided area DR2, and the third divided area DR3, that is, the entire display area DR, are made to display an integrated image, the image can be displayed with a uniform pixel density in the entire display area.

[0038] The timing controller 92 is electrically connected to the scanning line driving circuit 60 through a plurality of wirings arranged on the flexible substrate 51 connected to the substrate 91 and the non-display region NR of the substrate 10. The plurality of wirings include, for example, a plurality of start signal wirings 21 to 23, 21A to 23A, clock signal wirings 24, 24A, and constant voltage wirings 25, 25A. The clock signal wirings 24, 24A are represented by one line, but the clock signal wirings 24, 24A may include, for example, a plurality of clock signal wirings having different phases.

[0039] Furthermore, the constant voltage wiring 25, 25A may include, for example, a power wiring for applying a driving voltage and a common wiring for applying a scanning line voltage. The scanning line voltage may include a high-level voltage Vgh for turning on the TFT and a low-level voltage Vgl for turning off the TFT.

[0040] In order for the timing controller 92 to independently output a start signal to the scan line drive circuit 60 of each divided area, the scan line drive circuit 60 of the first divided area DR1, the second divided area DR2, and the third divided area DR3 and the timing controller 92 are connected through the start signal wirings 21, 22, and 23, respectively. In addition, in the present embodiment, since two scan line drive circuits 60 are arranged in each divided area, the two scan line drive circuits 60 of each of the first divided area DR1, the second divided area DR2, and the third divided area DR3 are connected to each other through the cascade start signal wirings 21A, 22A, and 23A. The start signal specifies the timing of starting the scanning of the scan line in each divided area.

[0041] On the other hand, the clock signal that specifies the timing (speed) of scanning the scanning line GL of each divided area, the power supply voltage supplied to the scanning line driving circuit 60, the scanning line voltage, etc., can be a common value or the same signal for the scanning line driving circuit 60 of each divided area. Therefore, the clock signal wiring 24 and the constant voltage wiring 25 are connected to the timing controller 92 and one scanning line driving circuit 60 of at least one divided area, for example, and the scanning line driving circuit 60 connected to the clock signal wiring 24 and the constant voltage wiring 25 and the other scanning line driving circuits 60 in the same divided area and the scanning line driving circuits 60 in other divided areas are connected through the clock signal wiring 24A and the constant voltage wiring 25A. That is, the scanning line driving circuits 60 of a pair of adjacent divided areas are connected through the clock signal wiring 24A and the constant voltage wiring 25A. By connecting the scanning line driving circuits 60 of different divided areas with the clock signal wiring 24A and the constant voltage wiring 25A, the number of wirings between the control device 90 including the timing controller 92 and the active matrix substrate 40 can be reduced.

[0042] Similarly, the timing controller 92 is electrically connected to the data line driving circuit 70 through a plurality of wirings formed on the flexible substrate 51. The wirings include image signal wirings for transmitting image signals. In addition, in order to suppress degradation of the liquid crystal, etc., the display device 101 may also perform polarity inversion driving. In this case, the plurality of wirings may also include a control signal wiring 26 that transmits an output polarity control signal for alternately inverting the polarity of the data signal output from the data line driving circuit 70.

[0043] Fig.25 A block diagram summarizing the control signals for driving pixels. The timing controller 92 of the control device 90 receives a first video signal, a second video signal, and a third video signal from a main computer of the vehicle in order to display a first image, a second image, and a third image independently in the first divided area DR1, the second divided area DR2, and the third divided area DR3, respectively. As described later, at least one of the first to third video signals has a frame frequency different from that of the other two. Each video signal includes a video data signal (VData) and a video synchronization signal (VSync). Fig.25 In FIG. 1 , the timing controller 92 is shown as one element, but the timing controller 92 may be divided into three elements corresponding to the divided areas.

[0044] The timing controller 92 generates an image signal and a start signal according to each video data signal and a video synchronization signal, and outputs them to the data line driving circuit 70 and the scanning line driving circuit 60. In addition, the control device 90 supplies a scanning line voltage to the scanning line driving circuit. The scanning line voltage includes a cut-off voltage VgL that turns off the TFT and a conduction voltage VgH that turns on the TFT. For example, the cut-off voltage VgL is -6V, and the conduction voltage VgH is +20V.

[0045] The data line driving circuit 70 receives the image signal, generates a data signal, and outputs it to the data line SL. The data signal is composed of a voltage value corresponding to the brightness grayscale of each RGB. In the case where the display device 101 is driven by polarity inversion, for example, based on 6V, the voltage value of the data signal is, for example, in the range of 0 to 12V. That is, 3V and 9V of the data signal represent polarities reversed from each other, but the same brightness grayscale. Here, for simplicity, it is assumed that the TFT has ideal characteristics. In an actual TFT, appropriate voltage adjustment is performed in such a way that the + polarity and the - polarity have the same brightness grayscale. The scanning line driving circuit 60 receives a start signal, generates a scanning signal, and outputs it to the scanning line GL. The scanning signal is composed of two values: a cut-off voltage VgL and an on-voltage VgH.

[0046] The gate of the TFT of each pixel is connected to the scanning line GL, and the source is connected to the data line SL, so that it becomes conductive at the timing of the on voltage VgH of the scanning signal. Thus, a predetermined voltage of the data signal applied to the source is applied to the pixel electrode PE via the drain of the TFT.

[0047] The common electrode 15 ( Fig.15 ) A reference voltage is applied. For example, a voltage of 6 V is applied. As a result, a voltage difference between the voltages applied to the pixel electrode PE and the common electrode 15, i.e., a pixel applied voltage, is applied to the liquid crystal layer 81 sandwiched between the common electrode 15 and the pixel electrode PE, and the liquid crystal is oriented according to the value of the pixel applied voltage.

[0048] The timing controller 92 generates a start signal and an image signal from the video synchronization signal and the video data signal of the first to third video signals so that at least one of the first image, the second image, and the third image is displayed at a frame frequency different from the other two, and controls the scanning line driving circuit 60 and the data line driving circuit 70. For example, the first image is an image showing various meters of a car such as a speedometer and a tachometer, and because it contains fast-motion images, it is displayed at a frame frequency of 120 Hz. The second image is an image based on map information of a car navigation system, and because fast-moving images change less, it is displayed at a frame frequency of, for example, 10 Hz. The third image is a general TV or video image such as a relay image of sports, and is displayed at a frame frequency of 60 Hz.

[0049] According to the display device 101, an image can be displayed in a part of the divided areas in the display area DR at a frame frequency different from that in other areas. Therefore, the frame frequency of the image displayed in the part of the divided areas can be reduced to achieve a reduction in power consumption. In addition, in this case, by displaying the image at a high frame frequency in the other divided areas, even fast motion can be displayed smoothly, and high-quality display and low power consumption can be achieved.

[0050] In addition, a plurality of scan line drive circuits are arranged along the x-axis direction outside the display area, and the scan lines and the scan line drive circuits are electrically connected using scan line connection wiring extending in the same direction as the data lines, thereby avoiding the scan line drive circuits being arranged at the ends of the scan lines, i.e., at positions adjacent to the segmented areas in the x-axis direction. Thus, adjacent segmented areas can be arranged in contact with each other. Therefore, the cracks of the images displayed in the segmented areas can be made less obvious. For example, in the case where the first image, the second image, and the third image are integrally formed into one image, the areas between the segmented areas where the images are not displayed can be reduced or eliminated, and excellent display can be performed.

[0051] As described above, when the first image, the second image, and the third image are integrally formed into one image, that is, when the display area DR displays one image as a whole, it is preferable that no difference in brightness occurs at the boundary of the divided areas. In order to perform such a display, it is preferable that the positions of the connection points CP of the scanning line connection wiring BL and the scanning lines GL satisfy a specific relationship between the divided areas. This relationship is described in detail below.

[0052] Figure 6 The configuration of the scan line GL, the scan line connection wiring BL and the connection point CP in each divided area is shown. In each divided area, a certain connection point CP1 among the multiple connection points CP configured is determined, and another connection point CP2 configured at a position farther from the upper end DRe of the display area DR than the connection point CP1 is determined.

[0053] The distance between connection points CP1 and CP2 located in one of a pair of adjacent divided areas across boundary lines BD12 and BD23 and the boundary lines is respectively set to L1a and L1b, and the distance between connection points CP1 and CP2 located in the other of the pair of divided areas and the boundary lines is respectively set to L2a and L2b.

[0054] In the present embodiment, the distances L1a, L1b, L2a, and L2b satisfy the relationship of the following formula (1).

[0055] (L1b-L1a)×(L2b-L2a)>0···(1) For example, in Figure 6 In the above, the connection points CP1 and CP2 arranged on the first divided area DR1 and the second divided area DR2 are considered. The distances L1a, L1b, L2a, and L2b between the boundary line BD12 between the first divided area DR1 and the second divided area DR2 and the connection points are L1a and L1b in the first divided area DR1 and L2a and L2b in the second divided area DR2. Therefore, the relationship of formula (1) is satisfied.

[0056] Similarly, consider the connection points CP1 and CP2 configured in the second divided area DR2 and the third divided area DR3. The distances L1a, L1b, L2a, and L2b between the boundary line BD23 between the second divided area DR2 and the third divided area DR3 and the connection points are L1a and L1b in the second divided area DR2 and L2a and L2b in the third divided area DR3. Therefore, the relationship of formula (1) is satisfied.

[0057] That is to say, if the relationship between the distance between the connection points CP1 and CP2 and the boundary line is L1a>L1b or L2a>L2b, the configuration mode of the connection points is A, and the configuration mode of the connection points is B when L1a<L1b or L2a<L2b, then on the left and right sides of the boundary line, the configuration mode of AA or BB satisfies the relationship of formula (1).

[0058] A scanning signal for turning on / off each pixel PX output from the scanning line driving circuit is applied to the scanning line connecting wiring BL and the scanning line GL. The scanning signal has a pulse waveform when it is output from the scanning line driving circuit. However, according to the parasitic resistance and parasitic capacitance corresponding to the distance from the scanning line driving circuit to the pixel PX, the waveform is blunted, and the effective time for the pixel PX to be turned on becomes shorter. As a result, the brightness of the pixel is reduced according to the parasitic resistance and the parasitic amount. In two segmented areas adjacent to each other across a boundary line, the influence of the parasitic resistance and parasitic capacitance in the pixel closest to the boundary line of each segmented area can be evaluated as follows.

[0059] like Figure 7 As shown, in each divided area, the scanning line GL and the scanning line connecting wiring BL are divided into four, and the parasitic resistances of the divided parts are respectively set to Rg and Rb, and the parasitic capacitances are respectively set to Cg and Cb.

[0060] Figure 7 (a), (b), (c) are in the first divided area DR1, Figure 7 (d), (e), and (f) schematically show the position of the connection point CP between the scan line connection wiring BL and the scan line GL in the second divided area DR2, and the parasitic resistances Rg and Rb and parasitic capacitances Cg and Cb that are located from the scan line driving circuit to the pixel adjacent to the boundary line BD12 and affect the scan line. (a) and (d) show the scan line GL in the upper part of each divided area in the y-axis direction, (b) and (e) show the scan line GL in the central part of each divided area in the y-axis direction, and (c) and (f) show the scan line GL in the lower part of each divided area in the y-axis direction.

[0061] like Figure 7 As shown, assuming that Rg / Cg and Rb / Cb are equal to each other, the parasitic resistance and parasitic capacitance affecting the pixels adjacent to the boundary line BD12 are all four of Rg / Cg or Rb / Cb in (a) to (f). Therefore, the passivation of the waveform of the scanning signal applied to the pixel closest to the boundary line BD12 in the first segmented area DR1 and the pixel closest to the boundary line BD12 in the second segmented area DR2 is the same, and is affected by the same degree of parasitic resistance and parasitic capacitance. Therefore, the brightness reduction of the pixel caused by the parasitic resistance and parasitic capacitance is also the same, and the pixel emits light with the same brightness. Figure 7 and the following Figure 8 , Fig.10 , Fig.12 In the figure, the shaded rectangle represents the brightness of the pixel, and the thinner the shade, the higher the brightness. Therefore, the brightness difference of the pixels sandwiching the boundary line BD12 is small, and the boundary line is almost invisible. In addition, in the first segmented area DR1, the brightness of the pixels adjacent to the boundary line BD12 is roughly the same regardless of the position in the y-axis direction.

[0062] Figure 8 1 is a diagram for explaining the influence of parasitic resistance and parasitic capacitance on pixels adjacent to the boundary line BD23 in the second divided region DR2 and the third divided region DR3. In the second divided region DR2 and the third divided region DR3, the influence of parasitic resistance and parasitic capacitance on the pixels is different depending on the position in the y-axis direction. That is, the lower the pixel is, that is, the more negative it is along the y-axis direction, the greater the influence of parasitic resistance and parasitic capacitance.

[0063] Specifically, as shown in (a) and (d), the pixels connected to the scan line GL in the upper part of each divided area in the y-axis direction are affected by the parasitic resistance and parasitic capacitance of two quantities of Rg / Cg or Rb / Cb. As shown in (b) and (e), the pixels connected to the scan line GL in the central part of each divided area in the y-axis direction are affected by the parasitic resistance and parasitic capacitance of four quantities of Rg / Cg or Rb / Cb. In addition, as shown in (c) and (f), the pixels connected to the scan line GL in the lower part of each divided area in the y-axis direction are affected by the parasitic resistance and parasitic capacitance of six quantities of Rg / Cg or Rb / Cb.

[0064] Therefore, in each of the second segmented area DR2 and the third segmented area DR3, the lower the pixel adjacent to the boundary line BD23 is, the greater the passivation of the waveform of the applied scanning signal is, and the lower the brightness of the pixel is. However, if the position in the y-axis direction is the same, the pixels closest to the boundary line BD12 in the second segmented area DR2 and the third segmented area DR3 are affected by the same degree of parasitic resistance and parasitic capacitance. Therefore, the brightness difference of the pixels sandwiching the boundary line BD23 is small, and the boundary line is almost not noticeable.

[0065] Fig. 9 This represents an example where the distances L1a, L1b, L2a, and L2b do not satisfy equation (1). Fig. 9 As shown, for the boundary line BD12, for example, the relationship L1a>L1b is satisfied in the first divided area DR1, and the relationship L2a<L2b is satisfied in the second divided area DR2. That is, the configuration pattern AB is satisfied. In this case, Fig.10As shown in (a) and (d), in the upper part of the y-axis direction, the pixels adjacent to the boundary line BD12 of the first segmented area DR1 are affected by greater parasitic resistance and parasitic capacitance than the pixels adjacent to the boundary line BD12 of the second segmented area DR2, and the brightness is reduced. Therefore, the boundary line BD12 caused by the brightness difference is obvious.

[0066] In addition, if Fig.10 As shown in (c) and (f), in the lower part of the y-axis direction, the pixels adjacent to the boundary line BD12 of the second segmentation region DR2 are affected by larger parasitic resistance and parasitic capacitance than the pixels adjacent to the boundary line BD12 of the first segmentation region DR1, and the brightness is reduced. Therefore, the boundary line BD12 caused by the brightness difference is obvious.

[0067] In addition, if Fig.11 As shown, with respect to the boundary line BD12, for example, the relationship L1a<L1b is satisfied in the first divided area DR1, and the relationship L2a>L2b is satisfied in the second divided area DR2. That is, the configuration pattern BA is satisfied. In this case, Fig.12 As shown in (a) and (d), in the upper part of the y-axis direction, the pixels adjacent to the boundary line BD12 of the first segmented area DR1 are more affected by parasitic resistance and parasitic capacitance than the pixels adjacent to the boundary line BD12 of the second segmented area DR2, and the brightness is reduced. Therefore, the boundary line BD12 caused by the brightness difference is obvious.

[0068] In addition, if Fig.12 As shown in (c) and (f), in the lower part of the y-axis direction, the pixels adjacent to the boundary line BD12 of the first segmented area DR1 are affected by larger parasitic resistance and parasitic capacitance than the pixels adjacent to the boundary line BD12 of the second segmented area DR2, and the brightness decreases. Therefore, the boundary line BD12 caused by the brightness difference is obvious.

[0069] In this way, according to the display device 101, the position of the connection point between the scanning line GL and the scanning line connecting wiring BL satisfies the relationship of formula (1), thereby, near the boundary between two adjacent divided areas, the influence of the reduction in pixel brightness caused by the influence of parasitic resistance and parasitic capacitance can be suppressed, and a display that is not prone to brightness difference (brightness separation) can be performed at the boundary between the two divided areas.

[0070] In this embodiment, three segmented areas are arranged along the x-axis direction, but even when more than four are arranged, by repeating the arrangement pattern of the connection points in the two segmented areas sandwiching the boundary line as AA, BB, AA, BB..., it is possible to display an image that is not prone to brightness differences on any boundary line. In addition, in this embodiment, the arrangement pattern of the connection points in the first segmented area and the second segmented area is AA, but it may also be BB. In this case, the arrangement pattern of the connection points in the second segmented area and the third segmented area is AA.

[0071] In addition, when the configuration of the connection points in the two adjacent segmented areas satisfies the formula (1), the direction in which the scan line driving circuit 60 scans the scan line connection wiring BL is preferably different from the scanning direction of the scan line driving circuit configured in one area of ​​a pair of segmented areas adjacent to each other across the boundary line and the scanning direction of the scan line driving circuit configured in the other area. In this way, by determining the scanning direction, the scanning directions of the scan lines in the two adjacent segmented areas are equal to each other. Specifically, when the scan line in one area of ​​the adjacent pair of segmented areas is scanned from top to bottom, the scan line in the other area is also scanned from top to bottom. In addition, when the scan line in one area of ​​the adjacent pair of segmented areas is scanned from bottom to top, the scan line in the other area is also scanned from bottom to top.

[0072] Furthermore, when the relationship L1a>L1b and L2a>L2b is satisfied, the scanning line connection wiring is scanned in the direction toward the boundary line by the scanning line driving circuits of the adjacent pair of divided areas, and the scanning lines GL of the pair of divided areas are scanned from top to bottom. Furthermore, when the relationship L1a<L1b and L2a<L2b is satisfied, the scanning line connection wiring is scanned in the direction away from the boundary line by the scanning line driving circuits of the adjacent pair of divided areas, and the scanning lines GL of the pair of divided areas are scanned from top to bottom.

[0073] Next, an example of a specific configuration of a pixel in the display device 101 will be described. FIG13 is a plan view showing an enlarged portion of an active matrix substrate 40 of the display device 101. Fig.13A As shown, each of the multiple pixels PX in this embodiment is any one of a red pixel (shown in R), a green pixel (shown in G), and a blue pixel (shown in B). In addition, pixels of the same color are arranged in the y-axis direction, and green pixels, green pixels, and blue pixels are repeatedly arranged in the x-axis direction. The configuration of the multiple pixels is not limited to this example, and may also include yellow pixels and white pixels. In addition, the configuration of each pixel may also be arranged according to the Bayer arrangement.

[0074] Alternatively, the structure may be such that pixels of the same color are arranged in the x-axis direction, and green pixels, green pixels, and blue pixels are repeatedly arranged in sequence in the y-axis direction. Fig. 13B In this configuration, the scanning lines are separated into red pixels, green pixels, and blue pixels. Fig.13A The configuration shown requires scanning at three times the speed, but since the data lines are shared by red pixels, green pixels, and blue pixels, the number of expensive data line drive circuits can be reduced to one third.

[0075] In addition, since pixels of the same color are arranged in the x-axis direction, when the liquid crystal display device has a structure in which a color filter is arranged on the opposite substrate, color shift caused by the positional shift of the active matrix substrate and the opposite substrate in the x-axis direction can be suppressed. For example, when such a display device is curved along the x-axis direction, the curvature radius of the active matrix substrate and the opposite substrate is different, so that the position of the pixel in the active matrix substrate and the position of the pixel in the opposite substrate are offset in the x-axis direction. However, since pixels of the same color are arranged in the x-axis direction, even if the position is offset, it is possible to suppress display in different colors.

[0076] In the active matrix substrate 40, when the interval between a pair of pixels of the same color closest to each other in the x-axis direction in a pair of adjacent divided regions is set to d1, and the interval between a pair of pixels of the same color closest to each other in the x-axis direction in one of the adjacent pair of divided regions is set to d2, it is preferred that d1 and d2 are equal. Fig.13A and Fig. 13B As shown, when the distance between the green pixel close to the boundary line BD12 in the first divided area DR1 and the green pixel close to the boundary line BD12 in the second divided area DR2 is set to d1, and the distance between the two closest green pixels in the x-axis direction of the first divided area DR1 is set to d2, d1=d2. When the distance between the two closest green pixels in the x-axis direction of the second divided area DR2 is set to d2', d1=d2=d2' is more preferably.

[0077] By satisfying this relationship, the first divided region DR1 and the second divided region DR2 are continuous in the x-axis direction, so that no extra space is arranged between two pixels sandwiching the boundary line BD12. Therefore, when an image continuous with the first divided region DR1 and the second divided region DR2 is displayed integrally, there is no interruption in the divided region, and excellent display can be performed.

[0078] Furthermore, it is preferred that each scanning line arranged in one of a pair of adjacent divided regions overlaps with one of the plurality of scanning lines arranged in the other region in the y-axis direction when viewed from the x-axis direction. Fig.14 As shown, the scan lines GL of the first divided region DR1 and the scan lines GL of the second divided region DR2 overlap in the y-axis direction in the region indicated by the oblique line. That is, preferably, the offset Pe in the y-axis direction between the scan lines GL of the first divided region DR1 and the scan lines GL of the second divided region DR2 is smaller than the width Wg of the scan line GL (Pe < Wg). More preferably, Pe < 1 / 2Wg is satisfied. Preferably, the scan lines GL arranged in the second divided region DR2 and the third divided region DR3 also satisfy the same relationship.

[0079] By arranging the scan lines GL in this way, it is possible to suppress the pixels in the first divided region DR1 and the pixels in the second divided region DR2 from shifting in the y-axis direction at the boundary line BD12. Therefore, when the images continuous with the first divided region DR1 and the second divided region DR2 are displayed integrally, there will be no interruption of the divided regions, and excellent display can be performed. Similarly, it is possible to suppress the pixels in the second divided region DR2 and the pixels in the third divided region DR3 from shifting in the y-axis direction at the boundary line BD23. Therefore, when the images continuous with the first divided region DR1, the second divided region DR2, and the third divided region DR3 are displayed integrally, there will be no interruption of the divided regions, and even more excellent display can be performed.

[0080] In each divided region, a plurality of scan lines are connected to the wiring BL and arranged in the x-axis direction at the arrangement pitch of the pixels of the same color among the plurality of pixels PX in the x-axis direction. For example, as Fig.13A shown, in the first divided region DR1, since the arrangement pitch of the green pixels in the x-axis direction is d2, the arrangement pitch p1 of the scan line connection wiring BL is equal to d2. Similarly, in the second divided region DR2, the arrangement pitch p2 of the scan line connection wiring BL is equal to d2'.

[0081] In addition, preferably, each scan line connection wiring BL overlaps with either one or both of the blue pixel or the red pixel among the red pixel, green pixel, and blue pixel adjacent in the x-axis direction. In the Fig.13A example shown, the scan line connection wiring overlaps with the blue pixel and is arranged in the blue pixel. As described above, by arranging the scan line connection wiring BL, the aperture ratio of the pixel in which the scan line connection wiring BL is arranged is reduced. Among red, blue, and green, the visual sensitivity of green in the human eye is higher than that of red and blue. Therefore, when the scan line connection wiring BL is arranged in the green pixel to reduce the aperture ratio, the reduction in brightness is strongly felt. Therefore, by arranging the scan line connection wiring BL in the green pixel or the blue pixel where the influence on brightness due to the reduction in aperture ratio is small, the influence of the reduction in aperture ratio on brightness can be further suppressed.

[0082] Fig.15 Indicates Fig.13AAn example of a cross-sectional structure of a liquid crystal display device along line AA of FIG. In the active matrix substrate 40, a first insulating layer 11 is arranged on the substrate 10, and a data line SL and a scanning line connecting wiring BL are arranged on the first insulating layer 11. The data line SL and the scanning line connecting wiring BL extend in the y-axis direction and do not cross each other. Therefore, they can be composed of a metal layer of the same layer. For example, a metal layer is formed in a manner covering the first insulating layer 11, and patterning is performed, so that the data line SL and the scanning line connecting wiring BL can be formed at the same time.

[0083] A second insulating layer 12 is disposed on the first insulating layer 11 to cover the data line SL and the scanning line connection wiring BL, and an interlayer insulating layer 13 for flattening the concavoconvexity of the second insulating layer 12 is disposed on the second insulating layer 12. A pixel electrode PE is disposed on the interlayer insulating layer 13, and a third insulating layer 14 is disposed to cover the pixel electrode PE. Furthermore, a common electrode 15 is disposed on the third insulating layer.

[0084] The counter substrate 80 is disposed corresponding to the active matrix substrate 40 with a predetermined interval therebetween, and a liquid crystal layer 81 is disposed between the counter substrate 80 and the active matrix substrate 40 .

[0085] In this way, the scanning line connecting wiring BL can be formed of the same metal layer as the data line SL, and thus the scanning line connecting wiring can be formed without increasing the number of manufacturing steps.

[0086] As described above, the scanning line connection wirings BL are preferably arranged in the x-axis direction at the same pitch as the arrangement pitch of the same color pixels in the x-axis direction. In the case of this arrangement, when the number of pixels of red, blue, and green pixels adjacent in the x-axis direction as a group is greater than the number of pixels in the y-axis direction, pixels without the scanning line connection wirings BL are generated. In this case, the aperture ratio of the pixels without the scanning line connection wirings BL becomes high, and the aperture ratio of the pixels in each divided area becomes uneven.

[0087] In this case, the active matrix substrate 40 may further include at least one dummy scanning line connection wiring extending in the y-axis direction and arranged in the x-axis direction. Fig.16 1 is a schematic enlarged plan view of an active matrix substrate 40' further provided with a dummy scan line connection wiring DL. The scan line connection wiring BL and the dummy scan line connection wiring DL are arranged in the x-axis direction at the arrangement pitch p1 of the scan line connection wiring BL. That is, when the scan line connection wiring BL is arranged in a blue pixel, the dummy scan line connection wiring DL is also arranged in the blue pixel.

[0088] Thus, either the scanning line GL or the dummy scanning line connection wiring DL is arranged in the blue pixel. Therefore, it is possible to avoid the aperture ratio of the blue pixel being different depending on the position.

[0089] Since the virtual scan line connection wiring DL does not participate in the driving of the scan line GL, the scan line driving circuit 60 and the scan line GL are not connected. However, if it becomes a floating electrode that is not connected to any potential, it is possible to cause problems such as static electricity accumulation or potential difference caused by the difference in the amount of accumulated charge between the virtual scan line connection wirings DL. Therefore, it is preferred that the active matrix substrate 40 also has at least one common wiring CL extending along the x-axis direction, and each virtual scan line connection wiring DL is connected to at least one common wiring CL. The common wiring CL is connected to an electrode that is given a predetermined potential such as a reference potential. Multiple virtual scan line connection wirings DL can also be connected to the same common wiring CL.

[0090] The common wiring CL intersects with, for example, the scanning line connection wiring BL. In addition, the common wiring CL intersects with the data wiring.

[0091] In this way, by providing the dummy scanning line connection wiring DL in the pixel where the scanning line connection wiring BL is not provided, the aperture ratio of the pixel can be made constant.

[0092] In addition, when the number of pixels of a group of red, blue, and green pixels adjacent to each other in the x-axis direction is more than twice the number of pixels in the y-axis direction, as shown in FIG. Figure 4A As shown, a configuration may be adopted in which the scan line connection wiring has redundancy, two adjacent scan line connection wirings BL are connected to the same scan line GL, and further, a dummy scan line connection wiring DL is provided as necessary.

[0093] The display device 101 of the present disclosure can be modified in various ways. First, in the above-mentioned embodiment, the display device is a liquid crystal display device, but as mentioned above, it can also be a display device having other structures such as an organic EL display device. The display device of the present invention can be applied to display devices of various structures that turn on pixels connected to the selected scan lines by selectively applying scan signals to the scan lines, so as to light up each pixel according to the brightness of the data signal supplied from the data line.

[0094] In the present embodiment, the scanning line driving circuit 60 and the data line driving circuit 70 face each other across each divided region, but the scanning line driving circuit 60 may be disposed on the same side as the data line driving circuit 70 with respect to each divided region.

[0095] For example, Fig.17As shown in FIG. 5 , the scan line driving circuit may be arranged on the same flexible substrate 51 as the data line driving circuit. In this case, for example, when the data lines for driving red pixels, green pixels, and blue pixels among the plurality of data lines are SLr, SLg, and SLb, respectively, each scan line connection wiring BL may be arranged adjacent to the data line SLr for driving the red pixel. For example, wirings connected to the data lines SLr, SLg, and SLb may be arranged on the front side of the flexible substrate 51, and wirings connected to the scan line connection wiring BL may be arranged on the back side.

[0096] In addition, if Fig.18 As shown in FIG. 5 , the scanning line driving circuit and the data line driving circuit can also be formed into a driving circuit 65 that is contained in one package and is disposed on the flexible substrate 51. In other words, the driving circuit 65 can also be used as both the scanning line driving circuit and the data line driving circuit. Fig.17 Similarly, the data lines SL and the scanning line connecting wirings BL may be arranged in the order of the data lines SLr, SLg, and SLb and the scanning line connecting wirings BL in the x-axis direction and connected to the driving circuit 65 .

[0097] In addition, the shape and size of the display region DR and the number of divided regions included in the display region DR are merely examples, and the shape, size and number are not limited to those in the above-described embodiment.

[0098] (Second Embodiment) A method for driving the display device according to this embodiment will be described. Fig.19 1 shows the timing of scanning the scanning line GL when the first divided region DR1, the second divided region DR2, and the third divided region DR3 of the display device 101 display independent images respectively. Fig.19 In the figure, three signal groups for displaying images (first image, second image, third image) in the first divided area DR1, the second divided area DR2, and the third divided area DR3, and a scanning timing diagram indicating the scanning status of the panel are shown in the upper part, the central part, and the lower part, respectively. Specifically, the upper part, the central part, and the lower part respectively have video synchronization signals (V Sync1, V Sync2, V Sync3), start signals (SP1, SP2, SP3), output polarity control signals (S-Dr Pol 1, S-Dr Pol 2, S-Dr Pol 3), and scanning timing diagrams (Panel Scan1, Panel Scan2, Panel Scan3).

[0099] In addition, Fig.19In the embodiment, the frame frequency of the image displayed in the first divided area DR1 changes to 120 Hz, 60 Hz, and 120 Hz. The frame frequency of the image displayed in the second divided area DR2 changes to 10 Hz, 120 Hz, 60 Hz, and 120 Hz. The frame frequency of the image displayed in the third divided area DR3 changes to 60 Hz and 120 Hz.

[0100] Fig. 20 In addition to the four signal groups representing the second segmented area DR2, the timing of the main clock signal (MSync) and the video data signal (V Data) are also represented. The scan timing diagram is not an actual signal, but a schematic representation of the period of scanning and the polarity of the data signal during scanning. The thick solid line represents the application of the data signal with a positive (+) polarity, and the thin solid line represents the application of the data signal with a negative (-) polarity. The +, - symbols shown in the lower section of the scan timing diagram represent the polarity of the data signal, and the A, B, C... symbols represent the value (content) of the data signal. In addition, the positive and negative polarity refers to whether the voltage relative to the reference potential, that is, the common electrode of the pixel is positive (high voltage) or negative (low voltage). Therefore, depending on the setting of the reference potential, even if it is negative polarity, the actually applied voltage can be a positive voltage. The control device 90 generates a start signal based on the video synchronization signal of the image displayed in each segmented area, and outputs it to the scan line drive circuit 60 of each segmented area. Furthermore, the control device 90 inverts the output of the output polarity control signal from 0 to 1 or from 1 to 0 every time the video synchronization signal is received.

[0101] The scanning line driving circuit 60 of each divided area starts scanning the scanning line GL by receiving a start signal. The scanning of the scanning line GL is performed based on the scanning line clock signal commonly input to each divided area. Therefore, when the number of scanning lines GL arranged in each divided area is equal, the scanning period for scanning a plurality of scanning lines GL arranged along the y-axis direction in each divided area is equal to each other. In addition, even if the frame frequency is different, since the scanning line clock signal is the same, the scanning period is constant and does not change. On the other hand, the length of the subsequent pause period varies according to the frame frequency. The lower the frame frequency, the longer the pause period.

[0102] During the pause period, the scanning line GL is not scanned, and the last displayed data signal is maintained. In this way, power consumption can be reduced. Preferably, the length of the pause period is an integer multiple of one scanning period. When this condition is met, in a pair of adjacent divided areas in the first divided area DR1, the second divided area DR2, and the third divided area DR3, when the interval of the start signal of the scanning line driving circuit 60 applied to one area is set to Tspa, the interval of the start signal of the scanning line driving circuit 60 applied to the other area is set to Tspb, and Na and Nb are set to arbitrary natural numbers, the relationship Nb×Tspa=Na×Tspb is satisfied. Tspa and Tspb are frame periods, so 1 / Tspa and 1 / Tspb become frame frequencies. In other words, when changing the frame frequency of the image displayed in each divided area, if the frame frequency is selected in a manner that satisfies the relationship of Nb×Tspa=Na×Tspb, a common scanning line clock signal can be used to make the timing of the on / off of the switching elements such as TFT during scanning common in the entire display area, so that the overall structure of the drive system of the display device 101 can be simplified. When scanning the scanning line, the data signal is applied. At this time, the data line driving circuit 70 outputs the data signal with a polarity corresponding to the value of the output polarity control signal. For example, when the output polarity control signal is 1, the data signal is output with a positive polarity, and when the output polarity control signal is 0, the data signal is output with a negative polarity. As a result, the polarity of the voltage applied to the liquid crystal is reversed for each frame, and the deviation of the voltage applied to the liquid crystal is suppressed. During the period when the data line driving circuit 70 stops updating the data signal corresponding to the displayed image, the control device 90 stops outputting the start signal.

[0103] By performing such control, even if the frame frequency in each divided area changes at an arbitrary timing, the polarity reversal of the data signal can be maintained before and after the timing of the switching of the frame frequency. In addition, the polarity reversal of the data signal can be performed in the entirety of each divided area, in the scanning line unit (row line reversal), in the data line unit (column line reversal or column reversal), or in the pixel unit (dot reversal). In the case where the liquid crystal panel 50 is driven by column reversal or dot reversal, the number of multiple data lines SL configured in each divided area is preferably an even number. By satisfying this condition, for example, in a utilization scenario where a dynamic image continuous with three areas DR1, DR2 and DR3 is displayed at the same frame frequency, the polarity of the data signal applied to a pair of pixel columns closest to the boundary line BD12 or BD23 between a pair of adjacent divided areas is always opposite. In other words, it is possible to avoid the polarity of the data signal applied to a pair of pixel columns closest to the boundary line BD12 or BD23 between a pair of adjacent divided areas being the same. Therefore, it is possible to suppress degradation in the display quality of moving images, such as a situation where the continuity of polarity is broken near the boundaries BD12 and BD23 and the boundaries are visually recognized.

[0104] The display device 101 determines the contents and frame frequencies of the first image, the second image, and the third image to be displayed in the first divided area DR1, the second divided area DR2, and the third divided area DR3 of the display device 101, respectively, based on the operation of the driver and passengers on the state of the vehicle, the information to be displayed in each area according to the state of the vehicle, the vehicle, the AV equipment installed in the vehicle, the car navigation system, etc. The main computer of the vehicle determines the contents and frame frequencies of the first image, the second image, and the third image to be displayed in the first divided area DR1, the second divided area DR2, and the third divided area DR3 of the display device 101, respectively, and sequentially generates the first image, the second image, and the third image with the determined contents and frame frequencies, and inputs them to the control device 90. As described above, the control device 90 generates a start signal and an output polarity control signal based on the video synchronization signals of the first image, the second image, and the third image, respectively, and outputs these signals together with the image signals of the first image, the second image, and the third image to the scanning line driving circuit 60 and the data line driving circuit 70 of the first divided area DR1, the second divided area DR2, and the third divided area DR3. As described above, since the timing controller 92 of the control device 90 and the scanning line driving circuit 60 of each divided area are connected through independent start signal wirings 21, 22, and 23 ( Figure 4A ), so the control device 90 can independently output a start signal to the scanning line driving circuit 60 of each divided area. Fig.19 As shown, in the first divided region DR1 , the second divided region DR2 , and the third divided region DR3 , images can be displayed at different frame frequencies.

[0105] like Fig.19As shown in the figure, the frame frequency of the image is different between the same divided area and different divided areas, and thus the interval of the start signal applied to the scan line driving circuit 60 is also different. However, as described above, by applying the scan line clock signal to the scan line driving circuit 60 of each divided area in common, the scanning period can be made equal even when the image is displayed at different frame frequencies in different divided areas.

[0106] The difference in the frame frequency of the image is adjusted by the length of the pause period set after the scanning period. Therefore, sometimes, during the period of scanning the scanning line GL in one of a pair of adjacent divided areas, the scanning of the scanning line GL in the other area is stopped. Fig.19 As shown, when the first image is displayed in the first divided area DR1 at a frame frequency of 60 Hz and the second image is displayed in the second divided area DR2 at a frame frequency of 10 Hz, there is a period in which the scanning in the second divided area DR2 is stopped during the scanning period of the first divided area DR1.

[0107] As described in the first embodiment, in a pair of adjacent division areas among the first division area DR1, the second division area DR2, and the third division area DR3, the scanning directions of the scanning line driving circuit 60 are opposite to each other. In addition, in a pair of adjacent division areas, the scanning directions of the plurality of scanning line connection wirings BL are also opposite to each other. On the other hand, in the first division area DR1, the second division area DR2, and the third division area DR3, the scanning directions of the plurality of scanning lines GL are the same direction in the y-axis direction, and in the present embodiment, the plurality of scanning lines GL are scanned from top to bottom in any division area.

[0108] (Third Embodiment) The driving method of the display device of the present embodiment is described. In the driving method of the second embodiment, when the polarity of the driving data signal is inverted, the polarity is not adjusted between the divided areas. In the case where the display device continuously displays different images in each divided area, the polarity of the data signal between the divided areas may not be adjusted as in the driving method of the second embodiment. However, in the case of displaying a pair of adjacent divided areas or all continuous images of more than three divided areas, it is preferable to adjust the polarity inversion between the divided areas. In the present embodiment, such an image display is corresponded.

[0109] Fig.21 ⊥ indicates the timing of scanning lines GL for scanning each divided area in this embodiment. Fig.21The video synchronization signal (V Sync), data signal (V Data), start signal (SP) and scanning timing diagram (Panel Scan) are the same as those of the second embodiment. The timing controller 92 of the control device 90 generates the following signals to control the scanning line driving circuit 60 and the data line driving circuit 70.

[0110] As described in the second embodiment, the master clock signal (M Sync) is a pulse signal that matches the frame frequency of the image displayed in the earliest cycle among the images displayed in all the divided areas. The write polarity flag signal (MPo1) is successively output and inverted from 0 to 1, or from 1 to 0, each time the master clock signal is received.

[0111] The timing controller 92 includes a video memory that temporarily stores an image signal generated from a video data signal and output to each divided area until receiving transmission of a video data signal of a next frame, that is, during a period when transmission of the video data signal is stopped. Fig.21 V Memory represents the image signal stored in the video memory, and A, B, C, ... represent the image signals of consecutive frames.

[0112] The start pulse enable flag signal (SP Env) is synchronized with the video synchronization signal (V Sync) and becomes 1, and switches to 0 at the same time as the start signal falls. The panel polarity flag signal (P Po1) inverts from 0 to 1 or from 1 to 0 each time it receives the start signal. The panel polarity comparison flag signal (Pol Comp) compares the immediately preceding write polarity flag signal (M Pol) and the panel polarity flag signal (P Pol) in synchronization with the master clock signal (MSync), and outputs 1 if the values ​​match, and outputs 0 if they do not match.

[0113] If both the start pulse enable flag signal (SP Env) and the panel polarity comparison flag signal (Pol Comp) are 1, the start pulse signal (SP) is output synchronously with the main clock signal (M Sync). The scan line drive circuit that receives the start pulse signal (SP) scans the scan line as shown in the scan timing diagram (PanelScan). At this time, the scan line drive circuit outputs the data signal with positive polarity according to the value of the panel polarity flag signal (P Pol) immediately before, for example, if the value is 1, the data signal is output with negative polarity, and if it is 0, the data signal is output with positive polarity.

[0114] By performing such control, the start pulse enable flag signal (SP Env) is output in each divided area, and the scanning line GL is started to be scanned at a timing that matches the polarity of the data signal to be written in the write polarity flag signal (MPol) whose value periodically inverts between 0 and 1.

[0115] For example, in Fig.21 In the example, at the timing of outputting the video synchronization signal (V Sync) of the image frame represented by B, the write polarity flag signal (M Pol) is 0. At this timing, the data signal is not allowed to be written with a negative polarity, so the panel polarity comparison flag signal (Pol Comp) is not output. Then, at the timing when the write polarity flag signal (M Pol) becomes 1, the panel polarity comparison flag signal (Pol Comp) is output, so at this time, the scanning of the image frame represented by the positive polarity B starts.

[0116] In this way, the control device 90 sequentially generates a write polarity flag signal indicating the write polarity of the data signal output to the data line, and outputs a start signal to the start signal wiring connected to the scan line driving circuit of each divided area based on the write polarity flag signal. The write polarity flag signal (M Pol) is commonly used to determine the timing of generating the start signal in each divided area, so the timing of scanning start of the scan line in each divided area and the polarity of the data signal follow the write polarity flag signal (M Pol).

[0117] Therefore, according to the present embodiment, in each divided area, the polarity inversion drive of the data signal can be accurately maintained, and the frame frequency of the displayed image can be changed. In addition, when the number of data lines in each divided area is an even number, in a pair of adjacent divided areas, even if the frame frequency of the image displayed at any timing is changed, the regularity of the polarity inversion of the data signal can be made continuous between the pair of divided areas. Therefore, for example, even if the polarity is inconsistent in a pair of pixel columns respectively sandwiched between the first divided area DR1 and the second divided area DR2 with the boundary line BD12, and in a pair of pixel columns respectively sandwiched between the second divided area DR2 and the third divided area DR3 with the boundary line BD23, the polarity is not consistent, and the inversion drive can be performed correctly. Thus, the voltage offset applied to the liquid crystal near the boundary line is suppressed to degrade the liquid crystal layer. As a result, in particular, even in the case of displaying all continuous images of a pair of adjacent divided areas or more than three divided areas, it is possible to suppress the occurrence of display unevenness along the column direction near the boundary line, and a uniform display can be performed.

[0118] Fig. 22 2 shows the timing of scanning the scanning lines GL in the three divided regions according to the driving method of the display device of this embodiment. Fig.19 Likewise, in Fig. 22In the figure, three signal groups for displaying images (first image, second image, third image) in the first divided area DR1, the second divided area DR2, and the third divided area DR3 are shown in the upper, middle, and lower parts. In addition, a master clock signal (M Sync) and a write polarity flag signal (M Pol) commonly used in the first divided area DR1, the second divided area DR2, and the third divided area DR3 are shown in the uppermost part.

[0119] In the present embodiment, the highest frame frequency of the displayed image is 120 Hz, and the frequency of the main clock signal (M Sync) is also set to 120 Hz. In addition, the value of the write polarity flag signal (M Pol) is inverted each time the main clock signal (M Sync) is output, so the frequency of the write polarity flag signal (M Pol) is 60 Hz. That is, in the basic cycle of the write polarity flag signal (M Pol), the value of the first half period is 1, and the value of the second half period is 0. Therefore, for an image with a frame frequency of 60 Hz, when the polarity of the data signal is inverted and the scanning line is scanned at a frequency of 60 Hz, the polarity of the data signal is inconsistent with the value of the main clock signal (M Sync) every 2 cycles, so the delay is equivalent to the period scanning of 120 Hz.

[0120] The results, such as Fig. 22 As shown, in any divided area, when an image is displayed at a frame frequency of 60 Hz, the scanning line is scanned at least twice in succession during at least two consecutive frame periods, and scanning is suspended during the subsequent period, that is, the remaining period after the at least two scanning periods are subtracted from the total of the at least two frame periods. In this way, even when the scanning period of the scanning line GL is continuous, by reversing the polarity of the data signal, it is possible to suppress the deviation of the polarity of the voltage applied to the liquid crystal layer, that is, the pixel applied voltage.

[0121] In addition, when the frame frequency of the displayed image is low, the pixels are not fully charged due to the short scanning period, and the subsequent pause period is long, so the charge leaks and a flickering image can be seen. Fig.23 As shown, the scanning of the scanning line can be performed continuously for multiple times.

[0122] For example, when an image is displayed at 10 Hz in any divided area, the data line driving circuit 70 receives an image signal stored in a video memory, and outputs the same data signal multiple times while reversing its polarity in synchronization with the main clock signal. The scanning line driving circuit 60 receives a start signal multiple times from the timing controller 92 in synchronization with the main clock signal, that is, in synchronization with the output of the data signal, and outputs a scanning signal to scan the scanning line GL each time the start signal is received. Thus, the scanning line is scanned multiple times in succession, and then the scanning is stopped. The scanning of the scanning line can be performed continuously for an even number of times or an odd number of times. If the number of scans is an odd number, the polarity of the pixel applied voltage during each stop period is reversed, thereby suppressing the deviation of the polarity of the pixel applied voltage.

[0123] By performing such driving, the pixel electrode can be appropriately charged even if one scanning time is short. In addition, as the off period of the switching element such as TFT becomes longer, the reliability of the switching element can be suppressed from being deteriorated.

[0124] In addition, refer to Fig.23 The driving method described above can be implemented by the control device 90, or a video signal suitable for the driving method can be prepared in advance and displayed on the display device 101. Fig.24 As shown in FIG. 1 , a video signal with a frame frequency of 10 Hz includes a plurality of continuous video data signals (VData) and a video synchronization signal (VSync) synchronized with a main clock signal. Fig.23 In the driving method shown, the number of multiple continuous image signals and video synchronization signals (V Sync) is an odd number. More specifically, the video data signal (VData) with a frame frequency of 10 Hz includes three continuous identical video data signals (VData) and video synchronization signals ("V Sync").

[0125] The control device 90 receives the transmission of the video data signal (VData) and the video synchronization signal (VSync), generates a start signal (SP) in synchronization with the video synchronization signal (VSync), and generates an image signal (not shown) based on the video data signal (VData). The generated start signal and image signal are output to the scanning line driving circuit 60 and the data line driving circuit 70, respectively.

[0126] The data line driving circuit 70 receives the image signal and outputs the data signal to the data line SL. Fig.24As shown in the lower part of , the data line driving circuit 70 continuously outputs the same data signal A three times while reversing the polarity, and then sets a pause period by not outputting the data signal. Next, the data line driving circuit 70 continuously outputs the data signal B three times while reversing the polarity, and then sets a pause period in which the data signal is not output. In this way, the control device 90 receives the transmission of the video data signal, and then stops outputting the start signal during the period in which the transmission of the video data signal is stopped.

[0127] The video data transmission interval, which is the period from the timing of outputting the third data signal to the timing of outputting the data signal of the next frame, coincides with the start signal output interval, which is the period from the timing of outputting the third start signal to the timing of outputting the start signal of the next frame.

[0128] By preparing such a video signal, the configuration of the control device 90 can be simplified, and the overall cost of the display device 101 can be reduced. Furthermore, when preparing a video signal, by appropriately adjusting the timing of the frame frequency change, polarity inversion can be adjusted between the divided areas as shown in the third embodiment.

[0129] In addition, the display device and driving method of the second and third embodiments are examples, and various changes can also be made. For example, the frame frequency of the image displayed in each divided area is not limited to the combination of 10Hz, 60Hz, and 120Hz, but can also be other frequencies. In addition, the image can be displayed at more than 4 different frequencies. In addition, the control method for generating a start signal based on a write polarity flag signal is not limited to the above-mentioned embodiment, and other control methods can also be used. Moreover, in the second and third embodiments, the polarity of the data signal output by the data line driving circuit is controlled by the output polarity control signal, but the polarity can also be automatically reversed each time the data line driving circuit outputs.

[0130] The display device of the present disclosure can also be described as follows.

[0131] A display device or a display device driving method of a first structure of the present disclosure comprises: a substrate having a main surface, the main surface having a display area and a non-display area located around the display area, the display area including more than three divided areas arranged adjacent to each other along a first direction; a plurality of scan lines, respectively arranged in each divided area, the plurality of scan lines extending along the first direction and arranged along a second direction intersecting the first direction; a plurality of data lines, respectively arranged in each divided area, the plurality of data lines extending along the second direction and arranged along the first direction; a plurality of pixels, respectively arranged in each divided area, and respectively arranged in an area surrounded by a pair of data lines among the plurality of data lines and a pair of scan lines among the plurality of scan lines; a plurality of scan line connection wirings, respectively arranged in each divided area, extending along the second direction, and Arranged along the first direction; a plurality of data line driving circuits, respectively connected to a plurality of data lines in the respective divided areas; a plurality of scan line driving circuits corresponding to the respective divided areas; a control device; and a plurality of start signal wirings, independently connecting the scan line driving circuits corresponding to the respective divided areas and the control device; the plurality of scan line driving circuits and the plurality of data line driving circuits are respectively arranged along the first direction outside the display area, the respective scan line connection wirings electrically connecting the scan line driving circuit and one of the plurality of scan lines, the control device independently outputs a start signal to the start signal wiring connected to the scan line driving circuits in the respective divided areas, the scan line driving circuit and the data line driving circuit display images at frame frequencies different from each other in at least a pair of adjacent divided areas among the more than three divided areas.

[0132] According to the first configuration, a part of the display area can be driven at a different frame frequency, thereby achieving a reduction in power consumption. By arranging the scan line drive circuit and the data line drive circuit opposite to each other, the adjacent divided areas can be arranged in contact with each other, and the cracks of the image displayed in the divided areas can be made less noticeable. In addition, the start signal wiring is independently connected to the scan line drive circuit corresponding to each divided area, so that each divided area can be independently controlled.

[0133] Regarding the display device or the display device driving method of the second configuration, in the first configuration, at least one selected from the group consisting of a power wiring, a clock signal wiring, and a common wiring of a scanning line driving circuit connecting the adjacent pair of divided areas may be further provided. By arranging at least one of the power wiring, the clock signal wiring, and the common wiring between the driving circuits, the number of wirings from the control device can be reduced.

[0134] Regarding the display device or the method for driving the display device of the third configuration, in the first configuration, intervals of the start signals applied to the scanning line driving circuit may be different from each other in the pair of adjacent divided regions.

[0135] Regarding the display device or the driving method of the display device of the fourth configuration, in the first configuration, in the adjacent pair of divided areas, the interval of the start signal applied to the scanning line driving circuit of one area is set to Tspa, and the interval of the start signal of the other area is set to Tspb, and when Na and Nb are set to arbitrary natural numbers, the relationship Nb×Tspa=Na×Tspb is satisfied. The clock frequency of the gate can be unified, the timing of ON / OFF of the TFT can be shared in the panel, and the overall driving system can be simplified.

[0136] Regarding the display device or the display device driving method of the fifth configuration, in the first configuration, in the adjacent pair of divided areas, the scanning periods for scanning a plurality of scanning lines arranged along the second direction once are made equal to each other. By making the scanning periods equal, that is, sharing a clock signal, the frame frequency of each area can be made different while the timing of TFT ON / OFF can be shared within the panel, thereby simplifying the entire driving system.

[0137] Regarding the display device or the display device driving method of the sixth configuration, in the first configuration, during the scanning of the plurality of scanning lines in one of the pair of adjacent divided regions, the scanning of the plurality of scanning lines may be stopped in the other divided region. By stopping the scanning, power consumption can be suppressed.

[0138] Regarding the display device or the method for driving the display device of the seventh configuration, in the first configuration, the number of the plurality of data lines in each of the three or more divided areas may be an even number. By setting the number of data lines in each divided area to an even number, when displaying an image or a moving image that is continuous with two or more adjacent areas, even if the polarity of the data signal is reversed by column inversion, dot inversion, etc., the regularity of the polarity determination of the boundary can be maintained. Even when a plurality of divided areas are connected and displayed as one display area to display an image or a moving image, no seam is visually recognized.

[0139] Regarding the display device or the display device driving method of the eighth configuration, in the first configuration, in a group of pixels belonging to each of the pair of adjacent divided regions, periods in which the polarity of the data signal is the same and periods in which the polarity is different are repeated.

[0140] Regarding the display device or the display device driving method of the ninth configuration, in the first configuration, the control device may control the plurality of data line drive circuits in such a manner that the polarity of the data signals of at least two consecutive frames is inverted for each frame in at least one of the three or more divided areas and output to the plurality of data lines, and the plurality of scanning lines are scanned at least two times in succession during the at least two consecutive frames, and the scanning is stopped during the subsequent period. By inverting the polarity of the data signals of two consecutive frames and continuously writing them, the deviation of the polarity of the data signal can be suppressed even without using a source driver that automatically inverts the polarity or a signal that controls the output polarity.

[0141] Regarding the display device or the display device driving method of the tenth configuration, in the first configuration, the control device may sequentially generate write polarity flag signals indicating write polarities of data signals outputted to the plurality of data lines by the plurality of data line drive circuits in the three or more divided areas, and output a start signal to a start signal wiring connected to a scan line drive circuit of each divided area based on the write polarity flag signal. By outputting the start signal to the scan line drive circuit of each divided area in synchronization with the flag signal, the polarity inversion of the data signal can be controlled between the divided areas.

[0142] Regarding the display device or the method for driving the display device according to the eleventh configuration, in the first configuration, in the pair of adjacent divided regions, scanning directions of the scanning line driving circuits are opposite to each other.

[0143] Regarding the display device or the display device driving method of the twelfth configuration, in the first configuration, in the adjacent pair of divided regions, scanning directions of the plurality of scanning line connection wirings are opposite to each other.

[0144] Regarding the display device or the method for driving the display device of the thirteenth configuration, in the twelfth configuration, the plurality of scanning lines may scan in the same direction in the second direction in the pair of adjacent divided regions.

[0145] Regarding the display device or the driving method of the display device of the fourteenth configuration, in the first configuration, the control device may receive from the outside the transmission of a video data signal corresponding to images respectively displayed in the three or more divided areas, and in at least one of the three or more divided areas, the control device stops outputting the start signal during the period when the transmission of the video data signal is stopped.

[0146] Regarding the display device or the driving method of the display device of the fifteenth structure, in the first structure, the control device may receive transmission of video data signals corresponding to images respectively displayed in the three or more divided areas from the outside, and generate image signals output to the multiple data line driving circuits based on the video data signals, and the control device includes a video memory for temporarily storing the generated image signals, and in at least one of the three or more divided areas, during the period when the transmission of the video data signals corresponding to the display images of the divided areas is stopped, the video memory stores the image signals output to the data line driving circuits of the at least one area.

[0147] Regarding the display device or the driving method of the display device of the sixteenth configuration, in the first configuration, the control device may externally receive the transmission of video data signals corresponding to images respectively displayed in the three or more divided areas, and in at least one of the three or more divided areas, the interval of the start signal output to the scanning line driving circuit is consistent with the interval of the transmission of the video data signal.

[0148] Regarding the display device or the display device driving method of the seventeenth configuration, in the first configuration, the data line driving circuit may continuously output the same data signal multiple times in at least one of the three or more divided areas, and then stop outputting the data signal. The circuit of the display device can be simplified, and the cost can be suppressed as a whole.

[0149] Regarding the display device or the method for driving the display device of the eighteenth configuration, in the seventeenth configuration, the plurality of times may be an odd number.

[0150] Regarding the display device or the driving method of the display device of the nineteenth configuration, in the fifteenth configuration, the data line driving circuit receives the image signal stored in the video memory in at least one of the three or more divided areas, and continuously outputs the same data signal multiple times while reversing the polarity, and the scanning line driving circuit continuously outputs the multiple scanning signals in synchronization with the output of the data signal, scans the multiple scanning lines, and then stops scanning. In this way, the charging rate of the panel can be improved, the flicker of the screen can be suppressed, the bias of the gate voltage can be suppressed, and the reliability can be improved.

[0151] Regarding the display device or the method for driving the display device according to the twentieth configuration, in the nineteenth configuration, the number of the plurality of frames may be an odd number. Description of Reference Numerals

[0152] 10…substrate, 10a…main surface, 11…first insulating layer, 12…second insulating layer, 13…interlayer insulating layer, 14…third insulating layer, 15…common electrode, 21…wiring, 30…counter substrate, 31…liquid crystal layer, 40, 40'…active matrix substrate, 50…liquid crystal panel, 51…flexible substrate, 60…scanning line drive circuit, 65…drive circuit, 70…data line drive circuit, 80…counter substrate, 81…liquid crystal layer, 82…sealant, 83…color filter, 90…control device, 91…substrate, 92…timing controller, 95…backlight, 96…polarizer, 101…display device, 200…instrument panel, 201…driver seat, 202…passenger seat, BD12 , BD23…boundary line, BL…scan line connection wiring, CL…common wiring, CP, CP1, CP2…connection point, Cb…parasitic capacitance, Cg…parasitic capacitance, DL…virtual scan line connection wiring, DR…display area, DR1…first division area, DR2…second division area, DR3…third division area, DRe…upper end, GL…scan line, H1, H2, H3…maximum height, L1a, L1b, l2a, L2b…distance, NR…non-display area, PE…pixel electrode, PX…pixel, Rb…parasitic resistance, Rg…parasitic resistance, SL, SLb, SLg, SLr…data line, W1, W2, W3…maximum width, p1, p2: arrangement pitch.

Claims

1. A display device, characterized in that: It has: A substrate having a main surface, the main surface having a display area and a non-display area located around the display area, wherein the display area includes three or more divided areas arranged adjacent to each other along a first direction; A plurality of scanning lines are respectively arranged in each divided area, and the plurality of scanning lines extend along the first direction and are arranged along a second direction intersecting the first direction; a plurality of data lines, respectively arranged in each of the divided areas, the plurality of data lines extending along the second direction and arranged along the first direction; A plurality of pixels are respectively arranged in each of the divided areas and are respectively arranged in an area surrounded by a pair of data lines among the plurality of data lines and a pair of scan lines among the plurality of scan lines; A plurality of scanning line connection wirings are respectively arranged in each of the divided areas, extend along the second direction, and are arranged along the first direction; A plurality of data line driving circuits are respectively connected to the plurality of data lines in the divided areas; A plurality of scanning line driving circuits corresponding to the respective divided areas; Control devices; as well as a plurality of start signal wirings independently connecting the scan line driving circuits corresponding to the respective divided regions and the control device; The plurality of scan line driving circuits and the plurality of data line driving circuits are arranged along the first direction outside the display area respectively. Each scanning line connecting wiring electrically connects the scanning line driving circuit and one of the plurality of scanning lines. The control device independently outputs a start signal to the start signal wiring connected to the scan line driving circuit of each divided area, and the scan line driving circuit and the data line driving circuit display images at different frame frequencies in at least a pair of adjacent divided areas among the more than three divided areas.

2. The display device according to claim 1, characterized in that The display device further includes at least one selected from the group consisting of a power supply wiring, a clock signal wiring, and a common wiring for connecting the pair of adjacent divided areas to a scanning line driving circuit.

3. The display device according to claim 1, characterized in that In the adjacent pair of divided regions, intervals of the start signals applied to the scanning line driving circuit are different from each other.

4. The display device according to claim 1, characterized in that In the adjacent pair of divided areas, the interval of the start signal applied to the scan line driving circuit of one area is set to Tspa, and the interval of the start signal of the other area is set to Tspb. When Na and Nb are set to arbitrary natural numbers, the relationship Nb×Tspa=Na×Tspb is satisfied.

5. The display device according to claim 1, characterized in that In the adjacent pair of divided areas, scanning periods for scanning a plurality of scanning lines arranged along the second direction once are made equal to each other.

6. The display device according to claim 1, characterized in that: While the plurality of scanning lines are being scanned in one of the pair of adjacent divided areas, scanning of the plurality of scanning lines is stopped in the other divided area.

7. The display device according to claim 1, characterized in that: In each of the three or more divided regions, the number of the plurality of data lines is an even number.

8. The display device according to claim 1, characterized in that: The control device controls the multiple data line driving circuits in such a manner that, in at least one of the more than three divided areas, the polarity of the data signals of at least two consecutive frames is reversed for each frame and output to the multiple data lines, and during the at least two consecutive frames, the multiple scanning lines are scanned at least twice in succession and the scanning is terminated during the subsequent period.

9. The display device according to claim 1, characterized in that: In the adjacent pair of divided regions, scanning directions of the scanning line driving circuits are opposite to each other.

10. The display device according to claim 9, characterized in that: In the adjacent pair of divided regions, scanning directions of the plurality of scanning line connecting wirings are opposite to each other.

11. The display device according to claim 1, characterized in that: The control device receives transmission of video data signals corresponding to the images displayed in the three or more divided areas from the outside, In at least one of the three or more divided areas, the control device stops outputting the start signal during a period in which the transmission of the video data signal is stopped.

12. The display device according to claim 1, characterized in that: In at least one of the three or more divided regions, the data line driving circuit continuously outputs the same data signal a plurality of times and then stops outputting the data signal.

13. The display device according to claim 12, characterized in that: The multiple times are odd numbers.

14. A method for controlling a display device, characterized in that: The display device comprises a display panel and a control device, wherein the display panel has: A substrate having a main surface, the main surface having a display area and a non-display area located around the display area, wherein the display area includes three or more divided areas arranged adjacent to each other along a first direction; A plurality of scanning lines are respectively arranged in each divided area, and the plurality of scanning lines extend along the first direction and are arranged along a second direction intersecting the first direction; a plurality of data lines, respectively arranged in each of the divided areas, the plurality of data lines extending along the second direction and arranged along the first direction; A plurality of pixels are respectively arranged in each of the divided areas and are respectively arranged in an area surrounded by a pair of data lines among the plurality of data lines and a pair of scan lines among the plurality of scan lines; A plurality of scanning line connection wirings are respectively arranged in each of the divided areas, extend along the second direction, and are arranged along the first direction; A plurality of data line driving circuits are respectively connected to the plurality of data lines in the divided areas; A plurality of scanning line driving circuits corresponding to the respective divided areas; Control devices; as well as a plurality of start signal wirings independently connecting the scan line driving circuits corresponding to the respective divided regions and the control device; The plurality of scan line driving circuits and the plurality of data line driving circuits are arranged along the first direction outside the display area respectively. Each scanning line connecting wiring electrically connects the scanning line driving circuit and one of the plurality of scanning lines. The control device independently outputs a start signal to the start signal wiring connected to the scan line driving circuit of each divided area, and the scan line driving circuit and the data line driving circuit display images at different frame frequencies in at least a pair of adjacent divided areas among the more than three divided areas.

15. The control method of the display device according to claim 14, characterized in that: The control device outputs the start signal at different intervals in the pair of adjacent divided areas.

16. The control method of the display device according to claim 15, characterized in that: In the adjacent pair of divided areas, the interval of the start signal applied to the scan line driving circuit of one area is set to Tspa, and the interval of the start signal of the other area is set to Tspb. When Na and Nb are set to arbitrary natural numbers, the relationship Nb×Tspa=Na×Tspb is satisfied.

17. The control method of the display device according to claim 14, characterized in that: In the adjacent pair of divided regions, the scanning line driving circuit makes scanning periods for scanning the plurality of scanning lines arranged in the second direction once equal to each other.

18. The control method of the display device according to claim 14, characterized in that: In one of the pair of adjacent divided areas, while the scanning line driving circuit is scanning the plurality of scanning lines, in the other divided area, the scanning line driving circuit stops scanning the plurality of scanning lines.

19. The control method of the display device according to claim 18, characterized in that: The scanning line driving circuit of the adjacent pair of divided areas inverts and outputs the polarity of the data signal in a group of pixels belonging to the adjacent pair of divided areas by repeating periods in which the polarity of the data signal is the same and periods in which it is different.

20. The control method of the display device according to claim 14, characterized in that: The control device controls the multiple data line driving circuits in such a manner that, in at least one of the more than three divided areas, the polarity of the data signals of at least two consecutive frames is reversed for each frame and output to the multiple data lines, and during the at least two consecutive frames, the multiple scanning lines are scanned at least twice in succession and the scanning is terminated during the subsequent period.

Images