JP5508693B2 - Display device - Google Patents

Description

  The present invention relates to a display device such as a matrix drive.

  In a display device that realizes a large screen that is widely used at present, a flat panel display (FPD) such as an LCD (Liquid Crystal Display) or a PDP (Plasma Display Panel) conforming to a standard whose screen size and definition are determined in advance. The screen size can be arbitrarily adjusted, but for the definition, for example, rear projection according to a predetermined standard such as XGA or full spec high vision is used. For these, the number of pixels used in the device manufacturing stage is determined. For example, in the case of the XGA standard, pixel arrangement and display driving are performed in accordance with the standard.

  Further, in these display apparatuses, an image can be adjusted according to a predetermined image conversion coefficient within the number of pixels that can be displayed as a device. For example, in the XGA standard, the number of pixels is 1024 × 768, but in a VGA having a smaller number of pixels, the number of pixels is 640 × 480, which is 0.625 times the number of pixels. Therefore, when the image information is XGA and the display device is VGA, the content can be displayed by adjusting the image using the difference in the number of pixels as a conversion coefficient.

In addition, there exist the following as a well-known literature relevant to this application.
JP-A-10-161632

  However, in the display device as described above, it is difficult to arbitrarily change the screen size of the display device according to the installation environment of the user without causing a sense of incongruity. In particular, in a public display used as an advertising medium, it is desired that the shape of the display device can be freely changed according to the installation environment of the user in the future.

  For example, when a display device having a length of 1 m in the scanning line direction is used, it is desired that the display device can be installed at, for example, 0.8 m in the scanning line direction according to the installation environment of the user. Therefore, there is a need for a display device that can be cut out at any location, just as wallpaper is applied to a wall.

  As for the display method, it is necessary to display an image with a little uncomfortable feeling using a display device cut out at an arbitrary position. When the conventional display device driving method is used, for example, when a part of the display device is cut off in the scanning line direction, there is no means for detecting this, so in the video signal processing system, the display device before cutting Since an image is formed with the number of pixels designed at the time of formation, there is a difficulty that desired video information cannot be displayed.

  For example, if the video information is 16: 9 and the video information is equivalent to 1080 scanning lines, it is assumed that the display device is disconnected at 800. At this time, the video signal can display a scanning line number from 1 to 800, but the display device cannot be displayed from 801 to 1080 because the display device is cut off. For this reason, a biased image is displayed in the upper part where the image of 801 to 1080 scanning lines is not displayed. In addition, since the processing device and the driving circuit perform 1080 image processing regardless of the number of scanning lines 801, the processing device and the driving circuit also perform processing on a portion where 801 to 1080 images are not displayed. become.

  The present invention has been made paying attention to the above circumstances, and an object thereof is to provide a display device capable of arbitrarily adjusting the screen size of the display device according to the installation environment.

  To achieve the above object, according to a first aspect of the present invention, there is provided a display panel having a plurality of signal lines and a plurality of scanning lines arranged to intersect with each of the plurality of signal lines, and the scanning lines. And a determination unit that determines whether or not the determination line is connected to the scanning line by power supplied to the scanning line.

According to a second aspect of the present invention, there is provided a display panel having a plurality of signal lines and a plurality of scanning lines arranged so as to intersect each of the plurality of signal lines, and a plurality of signal lines connected to the signal lines. A determination line; and a determination unit that determines whether or not the determination line is connected to the signal line by power supplied to the signal line.

  Furthermore, a third aspect of the present invention provides a display panel having a plurality of signal lines and a plurality of scanning lines arranged so as to intersect with each of the plurality of signal lines, and a plurality of scanning lines connected to the scanning lines. A first determination line, a plurality of second determination lines connected to the signal line, and first power for determining whether or not the first determination line is connected to the scanning line by power supplied to the scanning line. 1 determination part and the 2nd determination part which determines whether the said 2nd determination line is connected to the said signal line by the electric power supplied to the said signal line.

  Therefore, according to the present invention, it is possible to provide a display device that can arbitrarily adjust the screen size of the display device according to the installation environment.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a schematic configuration diagram of a display device according to an embodiment of the present invention.
In FIG. 1, the display device is, for example, a matrix-driven flat panel display, and includes a display panel 1, a scanning drive unit 3, a signal drive unit 5, and a dynamic circuit 2 drive circuit 2 that drives these. . The display panel 1 includes a plurality of signal lines 12 arranged in the column direction and a plurality of scanning lines 11 arranged in the row direction so as to intersect with each of the plurality of signal lines 11. The scan driver 3 sequentially applies an electric field for defining a scan position to the plurality of scan lines 11 under the control of the drive circuit 2. The signal driving unit 5 introduces signals according to information to be displayed on the plurality of signal lines 12 under the control of the driving circuit 2.

  Further, as shown in FIG. 1, the display device includes a signal cutting position detection unit 6 and a scanning cutting position detection unit 4. For example, when the display panel 1 is cut at the A-A ′ portion in FIG. 1, the scanning cutting position detection unit 4 has a function of detecting the cutting position. In addition, the signal cutting position detection unit 6 has a function of detecting the cutting position when the display panel 1 is cut at the B-B ′ portion in FIG. 1. Information representing the cutting positions detected by the scanning cutting position detector 4 and the signal cutting position detector 6 is sent to the drive circuit 2.

  FIG. 2 shows a configuration example in which a video conversion unit is added to the configuration shown in FIG. For example, in the case of a TFT-LCD, FIG. 1 is a configuration example showing a liquid crystal module and FIG. 2 is a configuration example showing a liquid crystal monitor. The video conversion unit 8 supplies the video signal obtained by converting the input video information according to the number of effective pixels of the display panel 1 to the drive circuit 2. The drive circuit 2 feeds back information representing the cutting position detected by the scanning cutting position detection unit 4 and the signal cutting position detection unit 6 to the video conversion unit 8 in advance as the number of effective scanning lines and the number of effective signal lines. By doing in this way, this display device can display according to the displayable area.

  The detailed configuration of the display device according to the present embodiment will be described below according to each example.

Example 1
Example 1 is an example of application to a display device having an integrated structure of linear structures.
FIG. 3 is a configuration example of the display device according to the first embodiment. In the first embodiment, a fiber-shaped optical waveguide capable of optical waveguide is used as the signal line 12. A light emitting diode as a light source 15 is attached to an end of each optical waveguide, and the light source 15 is wired to a scanning / signal driving unit 35. Light controlled based on information to be displayed from the light source 15 to the optical waveguide is introduced under the control of the scanning / signal driving unit 35. The optical waveguide is guided in the longitudinal direction of the optical waveguide in a state where the total reflection condition is satisfied.

  On the other hand, the scanning line 11 has a structure having a reflective surface on the side facing the signal line 12 and an electrode to which an electric field can be applied. Further, the scanning power supply line 13 and the connection determination line 14 are arranged in an electrically connected state via the scanning line 11. Here, the scanning power supply line 13 is arranged to electrically connect the corresponding scanning line 11 and the scanning / signal driving unit 35, and the connection determination line 14 includes the corresponding scanning line 11 and the connection detection circuit unit 42. It is arranged to be electrically connected. Further, at the intersection of each signal line 12 and each scanning line 11, a material whose refractive index changes with voltage or a structure where its position is mechanically displaced by application of an electric field and the refractive index on the signal line surface changes. have. The scanning power supply line 13 may be configured to be shared by the scanning line 11, for example.

  Here, when a scanning electric field is applied to a certain scanning line 11 from the scanning drive unit 3, the refractive index of the signal line 12 at each intersection changes in each signal line 12 that intersects the scanning line 11. Thus, the light in the signal line 12 can be in a state where the total reflection condition is not satisfied at each intersection. Thereby, the light from the light source 15 introduced from the end of the signal line 12 can be extracted outside at the corresponding intersection. From the above, it is possible to function as a display device by sequentially applying an electric field to the scanning line 11 and introducing light of a wavelength and a light amount corresponding to information to be displayed on the signal line 12 on the corresponding scanning line 11. It becomes possible. The scanning feed line 13 and the connection determination line 14 are formed in the same manner as the scanning / signal driving unit 35 that is an operation circuit for the signal line 12 because the circuit configuration units are integrated and arbitrarily cut in the scanning line direction. This is to make it easier.

  FIG. 4 shows a schematic example when the scanning power supply line 13 and the connection determination line 14 in this embodiment are connected to the scanning line 12. That is, this drawing corresponds to a region that can be displayed even after connection in a severable display device. In this figure, the scanning power supply line 13 is connected to the scanning / signal driving unit 35, the connection determination line 13 is connected to the connection detection circuit unit 42, and is also connected to the scanning line 11. Therefore, as shown in FIG. 4, when there is a connection detection instruction from the connection number determination processing unit 41 to the connection detection circuit unit 42, the scanning / signal driving unit 35 → scanning feed line 13 → scanning line 11 → connection determination line 14. → Since a series of connections such as the connection detection circuit unit 42 can be secured, it can be detected that the scanning power supply line 13 and the connection determination line 14 are connected via the scanning line 11 based on this.

  On the other hand, unlike FIG. 4, FIG. 5 is a schematic example when the scanning power supply line 13 and the connection determination line 14 are not connected to the scanning line 11. This figure shows an example in which the third and subsequent scanning lines are cut. This figure corresponds to an area on the cut side, that is, an area in which the third and subsequent scanning lines cannot be displayed after being cut in a cutable display device. In this figure, the scanning power supply line 13 is connected to the scanning / signal driving unit 35 and the connection determination line 14 is connected to the connection detection circuit unit 42, but not connected via the scanning line 11. Therefore, as shown in FIG. 5, when there is a connection detection instruction from the connection number determination processing unit 41 to the connection detection circuit unit 42, the scanning power supply line 13 and the connection determination line 14 are electrically connected. Therefore, it is possible to detect that the scanning power supply line 13 and the connection determination line 14 are not connected via the scanning line 11 based on this.

  FIG. 6 shows a circuit configuration example in the connection state detection operation shown in FIG. In the state where the scanning power supply line 13 and the connection determination line 14 are connected via the scanning line 11 as shown in FIG. 4, a closed circuit is formed as shown in FIG. When a bias is applied to the corresponding scanning power supply line 13 based on the connection detection instruction from 41, the voltage detection is performed by the current flowing through the resistance unit according to the applied bias in the voltmeter installed in the connection detection circuit unit 42. It becomes possible.

  On the other hand, FIG. 7 shows an example of a circuit configuration in the non-connection state detection operation shown in FIG. In a state in which the scanning power supply line 13 and the connection determination line 14 are not connected via the scanning line 11 as shown in FIG. 5, a closed circuit cannot be formed as shown in FIG. When a bias is applied to the corresponding scanning power supply line 13 based on the connection detection instruction from the processing unit 41, in the voltmeter installed in the connection detection circuit unit 42, a current flows through the resistance unit regardless of the applied voltage. Because there is no voltage, the voltage cannot be detected. Therefore, for example, if the voltage change in the voltmeter in FIGS. 6 and 7 is detected by sequentially switching each scanning line 11 to the contact corresponding to each scanning line 11, a scanning line effective as a display area can be detected. It becomes. For example, by performing this detection operation to each scanning line 11 sequentially from the scanning / signal driving unit 35 side, even if the display device is cut in the scanning line direction at an arbitrary position of the display device, the displayable range and display An impossible scanning line range and its position can be detected.

  Further, after the connection is detected, as shown in FIG. 8, if the changeover switch is arranged at a position not connected to any scanning line 11, all the scanning lines are kept in a state of not being connected to the connection detection circuit unit 42. It is possible. For this reason, a great influence on the scanning operation as the display device can be avoided.

Next, the operation of the display device configured as described above will be described.
FIG. 9 is a flowchart showing the scanning line number detection processing of the display device. In the present display device, first, the display device is installed in accordance with the installation environment at the time of installation, and the surplus portion that protrudes from the installation area can be cut and placed on demand. Thereafter, the number of scanning lines can be detected by the processing procedure shown in FIG.

  First, it is determined whether or not to initialize for detecting a change in the number of scanning lines (step S1a). For example, a human interface such as dip switch setting may be used, or an initial operation at power-on may be set. In the shipping stage (stage where the display device is manufactured), it is assumed that the number N of scanning lines is stored in the memory. If it is determined in step S1a that the number of scanning lines N is not initialized, video conversion corresponding to the number of scanning lines N stored in advance is performed.

  When initializing the number of scanning lines N, the connection number determination processing unit 41 operates the connection detection circuit 42 (step S2a), and sequentially scans the scanning lines from the scanning line 11 close to the scanning / signal driving unit 35, for example. 11, it is determined whether the scanning power supply line 13 and the connection determination line 14 are in a connected state or in a disconnected state (step S3a). If it is determined in step S3a that the scanning line 11 is in the connected state, n indicating the number of scanning lines (initial value is n = 0) is added to n = n + 1 (step S4a), and the next scanning line is determined. 11 shifts to connection / non-connection determination. This process is repeated until it is determined in step S3a that the connection is not established. When it is determined that it is not connected, the value of n at this time is detected as the number N of scanning lines of the display device (step S5a). The connection number determination processing unit 41 stores the number N of scanning lines in a memory (not shown) (step S6a), and stops the connection detection circuit 42 (step S7a).

The drive circuit 2 reads the scanning line number N stored in the memory and sends it to the video conversion unit 8 (step S8a). The video conversion unit 8 calculates a video conversion coefficient based on the number N of scanning lines (step S9a). Each time a video signal to be displayed is input (step S10a), the video conversion unit 8 performs a video conversion process using the calculated video conversion coefficient (step S11a), and according to the number N of effective scanning lines. The video signal that has been converted in this way is output to the drive circuit 2 (step S12a).
In this way, the display device can detect and recognize the number of scan lines that can be displayed even when the user cuts at an arbitrary position in the scanning direction of the display device. As a result, even when the number of display pixels specified at the time of manufacture is set to P in the signal line direction and Q in the scanning line direction, the displayable area after installation is changed to P in the signal line direction and N in the scanning line direction. Is possible.

  Note that the scanning line cutting position detection operation described above can be stored and stored in the memory after the cutting position is detected. For example, initialization at the time of setting immediately after installation or immediately after the start of the display device operation is performed. The detection operation can be performed at a timing different from the time when the image is drawn. FIG. 10 is a flowchart when the detection operation of the number of scanning lines is performed every time the display device is activated. The difference from FIG. 9 is that there is no scanning line initialization determination process in step S1a. In this case, as shown in FIG. 10, since the operation for detecting the number of scanning lines is performed every time it is activated, it is not necessary to store the number N of scanning lines at the stage of manufacture at the time of shipment in the memory. Further, when the display device is activated, for example, a black display operation is performed once on the entire screen (not visible to the observer), and at this time, the scanning line driving unit 3 detects that the state of the display device changes from the previous time. Only in such a case, the detection operation of the number of scanning lines may be performed.

  Here, FIG. 11 shows an example of video information input to the display device. In this example, the X direction in FIG. 11 is the signal line direction, and the Y direction is the scanning line direction. As described above, the display content when the display panel is cut in the scanning line direction, that is, when the number of display pixels specified at the time of manufacture is P in the signal line direction and Q in the scanning line direction is divided by the broken line in FIG. The center area. At this time, the display device before cutting can display the same image as the broken line area in FIG.

  FIG. 12 shows a display example when the operation for detecting the number of scanning lines is not performed after the display panel is cut in the scanning line direction. In this figure, the hatched area indicates the cut out area. If the detection operation is not performed here, the display device cannot determine up to which scanning line the displayable region is, so that the number of display pixels is P in the signal line direction and Q in the scanning line direction, as before cutting. Since the operation is performed based on the above processing, a part of the video that is originally desired to be displayed as shown in FIG. 12 is sequentially displayed from the top to the cutting position. Therefore, in this display device, the video display lacks a part of the content to be displayed.

  On the other hand, FIG. 13 shows a display example when the number of scanning lines is detected after the display panel is cut in the scanning line direction in accordance with the first embodiment. The effective scanning line number N is detected in advance at an arbitrary position by the processing shown in FIG. In accordance with this, the video conversion unit 8 multiplies the video shown in FIG. 11 by, for example, N / Q, that is, conversion processing in which the number of scanning lines is N and the number of signal lines is P × N / Q. By performing the above, even if the scanning line is cut at an arbitrary position as shown in FIG. 13, the entire original display content can be displayed. However, as shown in FIG. 13, in this conversion processing example, a non-display area as shown by diagonal lines is generated in the display area.

  Furthermore, the current video distribution technology is not limited to a predetermined standard, and can be distributed regardless of the display device standard such as 360 ° distribution. In this case, conversion can be performed in accordance with the aspect ratio that is changed by cutting the scanning line. For example, when the range indicated by the solid line portion in FIG. 11 is distributed and the display area before cutting is the range indicated by the broken line portion in FIG. First, the effective video range in the direction of the signal line of the source video is set to a P × Q / N area. In the present embodiment, this is assumed to be a range within a solid line frame in FIG. Next, by performing video conversion at N / Q times, a display as shown in FIG. 14 is possible. Thus, the degree of freedom of the screen size in the present display device can not only arbitrarily determine the size of the display device according to the installation environment, but also according to the video information so that it can be displayed with a desired aspect ratio, It is also possible that the user can adjust.

That is, according to the first embodiment, even if a display device cut in the scanning line direction is used, the original image can be converted and displayed according to the actual display area, and the installer does not feel uncomfortable. Can be enjoyed. In the first embodiment, the case of cutting in the scanning line direction has been described, but the same applies to the signal line direction .

FIG. 15 shows a configuration example of the display device according to the second embodiment. In the second embodiment, unlike the first embodiment, the scanning line driving unit 3 and the signal line driving unit 5 are orthogonally arranged, and accordingly, the scanning line cutting detection unit 4 and the signal line cutting detection unit. 6 are also arranged. Further, in the second embodiment, a region that is not cut is determined in advance, and this region coincides with a range surrounded by the scanning line driving unit 3 and the signal line driving unit 5. By adopting such a structure, each drive circuit unit and each disconnection detection unit itself are not disconnected, so that the range of circuit components and configurations to be used can be expanded. The connection from the scanning line driving unit 3 to each scanning line 11 and from the signal line driving unit 5 to each signal line 12 is made of a flexible and cutable wiring material. With such a configuration, for example, the display device can be cut along the AA ′ and BB ′ cross sections shown in FIG. Figure 16 is an enlarged configuration example of the pixel portion in FIG 15. As shown in FIG. 16, the display device of this configuration can be cut at positions AA ′ and BB ′ in FIG. 16 by utilizing the network structure. Therefore, the scanning cut detection unit 4 and the signal cut detection unit 6 in FIG. 15 detect the positions according to the detection flow shown in FIG. 9 of the first embodiment to detect the number of effective scanning lines and the number of signal lines. By doing so, it is possible to perform a display operation in a suitable state after cutting.

(Example 3)
In the present display device, a processing unit that converts video information according to the cutting position can be provided separately from the display device. This is because, for example, when the number of pixels is very large, conversion of video information requires a large processing capacity.

  FIG. 17 shows a configuration example of the display device according to the third embodiment. This configuration is roughly divided into two parts, and includes a display device 10 and a video processing device 9. The display device 10 includes a display panel 1, a scanning drive unit 3, a signal drive unit 5, a scanning cutting position detection unit 4 that detects a cutting position in the scanning line direction, and a signal cutting that detects a cutting position in the signal line direction. A position detection unit 6, a drive circuit 2 for the display panel 1, and a power supply circuit 7 are provided. In addition, as a structural example shown by the display panel 1 in this figure, it may be provided with the scanning power supply line 13 and the connection determination line 14 which are a part of FIG.

The video processing device 9 includes a power supply circuit 91, a video conversion unit 92 that performs video conversion processing based on the detected number of effective scanning lines and signal lines, and a control unit 93, and further includes, for example, a video storage unit. It is also possible to add 94 or the like. In this configuration, the display device 10, before the display operation, scan the cutting position detection unit 4 and the signal disconnected position the scan line by the detected detection position in the detection unit 6, the image processing apparatus valid line number information of the signal line 9 to send. In the video processing device 9, based on the information on the number of scanning lines and signal lines received from the display device 10, the video conversion unit 92 displays a video signal obtained by converting the video information according to the current display device. 10 will be transmitted. Thereby, when a great load is generated in the image conversion process, the processing load in the display device can be reduced.

(Example 4)
In the fourth embodiment, a display device that can be cut at a predetermined position will be described. When the display device is processed into a desired shape, the size can be defined in advance. For example, when a display device is installed on a wall surface, a standard height of approximately 1.8 m, 2.0 m, or 2.2 m is often selected as the wall height in the living space. In this case, instead of cutting the display device at an arbitrary position, it is only necessary to select from these selection branches and process the display device.

  FIG. 18 shows a configuration example of the display device according to the fourth embodiment. In the display device shown in FIG. 18, the cutting positions are defined in advance for each fixed number of pixels, for example, X1-X1 ′, X2-X2 ′, Y1-Y1 ′, Y2-Y2 ′, Y3-Y3 ′. . In addition to the cutting position, the scanning driving unit and the signal line driving unit are divided into scanning line driving units 31 to 33 and signal line driving units 51 to 54, and the scanning cutting position detection unit 4 and the scanning line driving are divided. Each of the units 31 to 33 is connected, and each of the signal cutting position detection unit 6 and the signal line driving units 51 to 54 is connected.

  For example, when the display device is cut along the X2-X2 ′ line, the scanning cutting position detection unit 4 detects and drives that the display device is cut between the scanning line driving unit 32 and the scanning line driving unit 33. The change information of the effective line number of the display device is sent to the circuit 2. As a result, the drive circuit 2 is configured such that the display device whose display area is from the display area 11 to the display area 43 at the time of shipment is composed only of the display areas 11, 21, 31, 41, 12, 22, 32, and 42. It is possible to recognize that For this reason, the drive circuit 2 allows the video conversion unit to perform a video conversion process corresponding to the video conversion unit, thereby enabling display without a sense of discomfort even when the display device is disconnected.

  When the configuration of the fourth embodiment is adopted, the scanning line or the signal line cannot be cut at an arbitrary position, but the signal driving units 51 to 54 and the scanning driving units 31 to 33 can be arranged at positions that are not cut. For example, it is possible to use an element that is difficult to cut, such as an LSI chip. In addition, the number of necessary connection determination lines can be reduced. As for the cutting position detection processing in the scanning line direction and the signal line direction, it is only necessary to detect cutting and non-cutting between predetermined cutting positions, so that the detection processing can be performed in a short time. .

  Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. Further, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, you may combine suitably the component covering different embodiment.

1 is a schematic configuration diagram of a display device according to an embodiment of the present invention. The figure which shows the structural example which added the video conversion part to the device structure shown in FIG. FIG. 3 is a diagram illustrating a device configuration example of a display device according to the first embodiment. FIG. 3 is a diagram schematically illustrating a scanning line connection state in the first embodiment. FIG. 2 is a diagram schematically illustrating a scanning line disconnected state in the first embodiment. The figure which shows the circuit structural example at the time of the detection of a scanning line connection state. The figure which shows the circuit structural example at the time of the detection of a scanning line non-connection state. The figure which shows the example of a circuit structure when not detecting a scanning line connection. The flowchart which shows the operation example of this display apparatus. The flowchart which shows the other operation example of this display apparatus. The figure which shows an example of the video information input into a display apparatus. The example of a display when the detection process of a scanning line cutting position is not performed. 3 is a display example of the display device according to the first embodiment. 6 is another display example of the display device according to the first embodiment. 4 is a device configuration example of the present invention in Example 2. FIG. FIG. 6 is a diagram illustrating a detailed structure of a pixel portion in Embodiment 2. FIG. 10 is a diagram illustrating a device configuration example according to a third embodiment. FIG. 10 is a diagram illustrating a device configuration example according to a fourth embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Display panel, 2 ... Drive circuit, 3 ... Scanning drive part, 4 ... Scanning cutting position detection part, 5 ... Signal drive part, 6 ... Signal cutting position detection part, 11 ... Scanning line, 12 ... Signal line, 7 ... Power supply circuit, 8 ... Video conversion unit, 13 ... Scanning feed line, 14 ... Connection determination line, 15 ... Light source, 35 ... Scanning / signal driving unit, 41 ... Connection number determination processing unit, 42 ... Connection detection circuit unit, 9 ... Image processing device 91... Power supply circuit 92 92 image conversion unit 93 93 control circuit unit 94 image storage unit 10 display device 31 to 33 scan drive unit 51 to 54 signal drive unit

Claims (9)

A display panel having a plurality of signal lines and a plurality of scanning lines arranged to intersect each of the plurality of signal lines;
A plurality of determination lines connected to the scanning lines;
A determination unit that determines whether or not the determination line is connected to the scan line by power supplied to the scan line, and determines the number of displayable scan lines based on the determination result of the connection ;
A display device comprising: a conversion unit that converts a display size of video information according to the number of scanning lines obtained by the determination unit . A plurality of power supply lines for supplying power to each of the plurality of scanning lines;
The display device according to claim 1, wherein the determination unit determines whether or not the power supply line and the determination line are connected via the scanning line.   The display device according to claim 1, wherein the determination unit sequentially determines the connection from a side that introduces a signal to the plurality of signal lines.   The display device according to claim 1, wherein the determination line is provided for each predetermined number of scanning lines. A display panel having a plurality of signal lines and a plurality of scanning lines arranged to intersect each of the plurality of signal lines;
A plurality of determination lines connected to the signal line;
A determination unit that determines whether or not the determination line is connected to the signal line by power supplied to the signal line, and determines the number of signal lines that can be displayed based on the determination result of the connection ;
A display device comprising: a conversion unit that converts a display size of video information according to the number of signal lines obtained by the determination unit . A plurality of power supply lines for supplying power to each of the plurality of signal lines;
The display device according to claim 5, wherein the determination unit determines whether or not the power supply line and the determination line are connected via the signal line.   The display device according to claim 5, wherein the determination unit sequentially determines the connection in the scanning order of the plurality of scanning lines.   The display device according to claim 7, wherein the determination line is provided for each fixed number of signal lines. A display panel having a plurality of signal lines and a plurality of scanning lines arranged to intersect each of the plurality of signal lines;
A plurality of first determination lines connected to the scanning lines;
A plurality of second determination lines connected to the signal line;
First determination for determining whether or not the first determination line is connected to the scanning line based on the power supplied to the scanning line, and obtaining the number of displayable scanning lines based on the determination result of the connection and parts,
A second determination for determining whether the second determination line is connected to the signal line based on the power supplied to the signal line, and obtaining the number of signal lines that can be displayed based on the determination result of the connection and parts,
A conversion unit that converts the display size of video information according to the number of scanning lines obtained by the first determination unit and the number of signal lines obtained by the second determination unit. A display device.

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