JP5538189B2 - Display device - Google Patents

Description

  Embodiments described herein relate generally to a display device.

  Electronic devices such as mobile phones, personal digital assistants, and personal computers equipped with a display device having a touch panel function have been developed as a form of user interface. In an electronic device having such a touch panel function, it has been studied to add a touch panel function by separately attaching a touch panel substrate to a display device such as a liquid crystal display device or an organic EL display device.

  In recent years, thin films are formed of various materials on a transparent insulating substrate such as a glass substrate by CVD (Chemical Vapor Deposition) method, etc., and by repeating operations such as cutting and grinding, scanning lines and signal lines can be used. A technique for manufacturing an image reading device by forming a display element, an optical sensor element, or the like is being studied.

  In addition, as a reading method of the image reading apparatus, a so-called conductive sensor electrode is arranged instead of the optical sensor element and so on, and information such as a finger or a pen on the panel surface is detected by a change in capacitance between the electrode and the finger. A technique for detecting a contact position by a capacitance method has been studied.

JP 2004-93894 A

  Display devices capable of detecting a contact position such as a fingertip or a pen tip are mounted on various electronic devices, and improvement in detection sensitivity is desired.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a display device that improves the detection sensitivity of a contact position such as a fingertip and has high operation accuracy.

  According to the display device according to the embodiment, a display unit including display pixels arranged in a matrix, a pixel electrode arranged in the display pixel, a scanning line and a sensor extending along a row in which the pixel electrodes are arranged An electrode for a signal, a signal line extending along a column in which the pixel electrodes are arranged, an array substrate, a counter substrate having a counter electrode disposed so as to face the plurality of pixel electrodes, the sensor electrode, A drive circuit for driving the signal line; and a sensor circuit for outputting a sensor data by receiving a signal from the sensor electrode and the signal line while outputting a sensor signal to the drive circuit; In the region around the display portion, the plurality of sensor electrodes arranged in the direction in which the signal lines extend are electrically connected.

It is a figure for demonstrating one structural example of the display apparatus which concerns on 1st Embodiment. It is a figure for demonstrating one structural example of the array substrate and counter electrode of the display apparatus shown in FIG. FIG. 3 is a diagram for explaining an operation of a display pixel when detecting a contact position in the display device shown in FIG. 1. It is a figure for demonstrating an example of the drive method of the display apparatus shown in FIG. It is a figure for demonstrating an example of the drive method of the display apparatus shown in FIG. It is a figure for demonstrating an example of the drive method of the display apparatus shown in FIG. It is a figure for demonstrating the structural example of the array substrate of the display apparatus which concerns on 2nd Embodiment, and a counter electrode. It is a figure for demonstrating operation | movement of the display pixel at the time of detecting a contact position in the display apparatus which concerns on 2nd Embodiment. It is a figure for demonstrating the modification of the display apparatus which concerns on embodiment. It is a figure for demonstrating one structural example of an array substrate and a counter electrode of the modification of the display apparatus which concerns on embodiment. FIG. 11 is a diagram for explaining the operation of a display pixel when detecting a contact position in the display device shown in FIG. 10. It is a figure for demonstrating one structural example of an array substrate and a counter electrode of the modification of the display apparatus which concerns on embodiment. FIG. 13 is a diagram for describing an operation of a display pixel when detecting a contact position in the display device illustrated in FIG. 12.

Hereinafter, embodiments will be described with reference to the drawings.
FIG. 1 shows a configuration example of a display device according to the first embodiment. In the display device according to the present embodiment, sensor electrodes (electrodes provided for detecting coupling with a finger at a rate of one for a plurality of display pixels. Both are driven and read by an external sensor circuit. Is provided). As will be described later, in the present embodiment, the sensor electrodes are the signal line SL and the counter electrode CE. The auxiliary capacitance line CsL of the array substrate 10 is also used as a sensor electrode integrally with the counter electrode CE.

  The display device according to this embodiment includes a display unit including an array substrate 10, a counter substrate 20, a liquid crystal layer LQ sandwiched between the array substrate 10 and the counter substrate 20, and display pixels PX arranged in a matrix. A liquid crystal display device including DYP.

  The array substrate 10 includes a pixel electrode PE arranged so as to correspond to each display pixel PX, a scanning line GL extending along a row where the pixel electrode PE is arranged, and a signal extending along a column where the pixel electrode PE is arranged. A line switch, a pixel switch SW disposed in the vicinity of the position where the scanning line GL and the signal line SL intersect, an auxiliary capacitance line CsL extending substantially parallel to the scanning line GL, and a scanning line driving circuit (auxiliary capacitance line driving circuit). YD) and a signal line driver circuit (including an output circuit) XD. In the present embodiment, the signal line SL, the auxiliary capacitance line CsL, and the counter electrode CE are used as sensor electrodes for detecting a contact position such as a fingertip.

  The pixel switch SW is, for example, a thin film transistor. The gate electrode of the pixel switch SW is electrically connected to the corresponding scanning line GL (or formed integrally). The source electrode of the pixel switch SW is electrically connected to the corresponding signal line SL (or formed integrally). The drain electrode of the pixel switch SW is electrically connected to (or integrally formed with) the corresponding pixel electrode PE.

  The plurality of scanning lines GL and the auxiliary capacitance line CsL are electrically connected to the scanning line driving circuit YD. In the video display period of one vertical period, the scanning line driving circuit YD sequentially drives the plurality of scanning lines GL for each horizontal period to close the pixel switch SW connected to the scanning line GL for each row, and to store the auxiliary capacitance line. A predetermined auxiliary capacitance voltage is applied to CsL. In the blanking period of one vertical period, the scanning line driving circuit YD applies a sensor signal to the auxiliary capacitance line CsL.

  The plurality of signal lines SL are electrically connected to the signal line drive circuit XD. In one horizontal period of the video display period, the signal line driver circuit XD applies video signals corresponding to the plurality of signal lines SL. The video signal applied to the signal line SL is applied to the corresponding pixel electrode PE via the pixel switch SW.

  At one end of the array substrate 10, an image display circuit 40 that supplies a video signal to the signal line drive circuit XD, a sensor signal to the signal line drive circuit XD, and an output from the signal line drive circuit XD and the auxiliary capacitance line CsL A sensor circuit 30 that outputs sensor data obtained by converting the converted signal into a digital signal to an external signal source (not shown) is electrically connected by a flexible substrate FC.

  The output signal of the auxiliary capacitance line CsL is bundled and electrically connected and added for a plurality of auxiliary capacitance lines CsL arranged in the direction in which the signal line SL extends for each area A1 of the display unit DYP. The number of auxiliary capacitance lines CsL to which output signals are added is designed according to the number of display pixels PX of the display unit DYP. For example, when the number of pixels of the display unit DYP is 960 (row) × 480 (column) pixels, the auxiliary capacitance The output signal of the line CsL is added for every 16 areas of the display unit DYP.

Similarly, the output signal of the signal line SL is bundled and electrically connected and added together for each region A2 of the display unit DYP, in which a plurality of signal lines SL arranged in the direction in which the auxiliary capacitance line CsL extends. The number of signal lines SL to which output signals are added is designed according to the number of display pixels PX of the display unit DYP. For example, when the number of pixels of the display unit DYP is 960 × 480 pixels, the output signal of the signal line SL is It is added for every 8 areas of DYP.
In the above case, the output signals are added by electrically connecting the plurality of auxiliary capacitance lines CsL and the plurality of signal lines SL. However, the auxiliary capacitance line CsL and the signal line SL are electrically connected. Alternatively, the output signals of the respective auxiliary capacitance lines CsL and the signal lines SL are input to the sensor circuit 30, and the sensor circuit 30 performs an operation to add a plurality of output signals for each of the areas A1 and A2 of the display unit DYP Good.

  In the above case, the plurality of auxiliary capacitance lines CsL are electrically connected, the plurality of signal lines SL are electrically connected, and the output signal is added, but the auxiliary capacitance lines CsL and the signal lines SL are By electrically connecting at least one of them and adding the output signal, the number of connection terminals of the flexible substrate FC connected between the array substrate 10 and the sensor circuit 30 can be reduced.

  The counter substrate 20 includes a plurality of counter electrodes CE arranged to face the pixel electrode PE and the auxiliary capacitance line CsL. The counter electrode CE is electrically connected to the opposing auxiliary capacitance line CsL by a transfer (not shown).

  FIG. 2 shows a configuration example of the array substrate 10 and the counter electrode CE of the display device according to the present embodiment. The counter substrate 20 includes a plurality of counter electrodes CE. The counter electrode CE extends substantially parallel to the direction in which the scanning line GL and the auxiliary capacitance line CsL extend, and is arranged side by side in the direction in which the signal line SL extends. One or more counter electrodes CE are arranged in the area A1 of the display unit DYP.

  A switch circuit ASW is disposed between the scanning line driving circuit YD and the display unit DYP. The switch circuit ASW is configured to switch the connection between the scanning line GL and the scanning line driving circuit YD.

  FIG. 3 is a diagram for explaining the operation of the display pixel PX when the contact position is detected in the display device according to the present embodiment.

  When detecting the contact position of a fingertip or a pen tip, the scanning line drive circuit YD and the scanning line GL are first electrically disconnected by the switch circuit ASW. Subsequently, the signal line driving circuit XD applies a voltage of a predetermined magnitude to the signal line SL and inputs a sensor signal from the scanning line driving circuit YD to the auxiliary capacitance line CsL, and the potential Sig of the signal line SL and the auxiliary capacitance line A change in the sensor signal output from CsL is output to the sensor circuit 30 as an output signal. If necessary, the sensor circuit 30 adds up the received potential Sig of the signal line SL for each of the plurality of signal lines SL arranged side by side in the direction in which the auxiliary capacitance line CsL extends, and the signal line SL extends. The sensor signals from the plurality of auxiliary capacitance lines CsL arranged in the direction are added together. The sensor circuit 30 outputs sensor data obtained by digitally converting the received signal or the summed signal.

  For example, the size of the capacitance generated between the fingertip and the counter electrode CE changes depending on the distance between the fingertip and the counter electrode CE, and the capacitance between the pixel electrode PE and the signal line SL and between the auxiliary capacitance line CsL and the signal line are changed. As the magnitude of the capacitance generated between the signal line SL and the potential Sig of the signal line SL and the sensor signal waveform output from the auxiliary capacitance line CsL also change. Therefore, the potential Sig of the signal line SL and the sensor signal waveform output from the auxiliary capacitance line CsL change depending on the distance between the fingertip and the counter electrode CE, and the external signal source detects the contact position of the fingertip from the sensor data. be able to.

  Here, for example, the signal line drive circuit XD may include an amplifier circuit that amplifies the sensor voltage signal applied to the signal line SL. In that case, the signal line drive circuit XD amplifies and outputs an electrode drive waveform (for example, 3-5 V amplitude) output from the sensor circuit 30. An output signal from the signal line SL is input to the sensor circuit 30 without passing through the signal line drive circuit XD. In this way, since the signal line SL can be driven with a larger amplitude, the S (signal) / N (noise) ratio of the output signal can be further improved, the detection sensitivity can be improved, and the operation accuracy can be increased. .

  The sensor circuit 30 can be formed at a low cost by a low voltage process. The signal line drive circuit XD has a wider voltage range that can be applied than the sensor circuit 30. The amplitude amplifier circuit may be provided on the array substrate 10. A level shifter may be provided on the array substrate 10 using a low-temperature polysilicon TFT or the like.

  FIG. 4 is a diagram for explaining an example of a driving method of the display device according to the present embodiment. In the example shown in FIG. 4, for example, one vertical (V) period includes a video display period and a vertical (V) blank period. The video display period includes 800 horizontal periods. In each horizontal period, the scanning line driving circuit YD drives the scanning line GL, and the signal line driving circuit XD applies a corresponding video signal to the pixel electrode PE via the signal line SL. In the horizontal period of 800, 800 scanning lines GL are sequentially driven, and a video signal for one screen is applied to the pixel electrode PE.

  In the vertical blanking period, the scanning line driving circuit YD inputs a sensor signal to the auxiliary capacitance line CsL. The output signal from the signal line SL and the sensor signal output from the auxiliary capacitance line CsL are output to the sensor circuit 30.

  FIG. 5 is a diagram for explaining another example of the method for driving the display device according to the present embodiment. In the example illustrated in FIG. 5, one vertical period includes a plurality of video display periods and a plurality of sensor periods. In one vertical period, the video display period and the sensor period are alternately provided. When two video display periods and two sensor periods are provided, each video display period is configured to include 400 horizontal periods.

  In each horizontal period, the scanning line driving circuit YD drives the scanning line GL, and the signal line driving circuit XD applies a corresponding video signal to the pixel electrode PE via the signal line SL. In the first video display period, the scanning lines GL up to the 400th are sequentially driven, and in the next video display period, the 401st to 800th scanning lines are sequentially driven, and a video signal for one screen is applied to the pixel electrode PE. Is done.

  In each sensor period, the scanning line driving circuit YD inputs a sensor signal to the auxiliary capacitance line CsL. In the first sensor period, the sensor signal is input to the half auxiliary capacitance line CsL of one screen, and in the next sensor period, the sensor signal is input to the remaining half auxiliary capacitance line CsL. The output signal from the signal line SL and the sensor signal output from the auxiliary capacitance line CsL are output to the sensor circuit 30.

  FIG. 6 is a view for explaining another example of the display device driving method according to the present embodiment. In the case shown in FIG. 6, an example of a driving method when the contact position is not detected is shown. For example, when the detection of the contact position is stopped during driving at the timing shown in FIG. 5, a video signal is applied to the pixel electrode PE in the video display period, and the sensor period is a blanking period.

  As described above, by adding the potential Sig of the signal line SL and the sensor signal output from the auxiliary capacitance line CsL, the S / N ratio of the sensor can be improved, and the detection sensitivity of the contact position can be increased. . That is, according to the present embodiment, it is possible to improve the detection sensitivity of the contact position such as the fingertip and provide a display device with high operation accuracy.

  Next, a display device according to a second embodiment will be described with reference to the drawings. In the following description, the same components as those of the display device according to the first embodiment described above are denoted by the same reference numerals and description thereof is omitted.

  FIG. 7 shows a configuration example of the array substrate 10 and the counter electrode CE of the display device according to the second embodiment. In the present embodiment, the array substrate 10 includes first electrodes SE arranged so as to extend substantially parallel to the scanning lines GL between the rows of display pixels PX arranged in the direction in which the scanning lines GL extend. In the present embodiment, the signal line SL and the first electrode SE are used as sensor electrodes that detect the contact position of a fingertip or the like.

  The first electrode SE can be formed of ITO, aluminum, the same material as the scanning line GL, or the like. A sensor signal is input to the first electrode SE from the scanning line driving circuit YD.

  The sensor signal output of the first electrode SE is bundled and electrically connected and added for a plurality of first electrodes SE arranged in the direction in which the signal line SL extends for each area A1 of the display unit DYP. The number of first electrodes SE to which output signals are added is designed according to the number of display pixels PX of the display unit DYP. For example, when the number of pixels of the display unit DYP is 960 (rows) × 480 (columns) pixels, The output signal of the electrode SE is added for every 16 areas of the display unit DYP.

  Similarly, the output signal of the signal line SL is bundled and electrically connected and added together for a plurality of signal lines SL arranged in the extending direction of the first electrode SE for each region A2 of the display unit DYP. The number of signal lines SL to which output signals are added is designed according to the number of display pixels PX of the display unit DYP. For example, when the number of pixels of the display unit DYP is 960 × 480 pixels, the output signal of the signal line SL is the display unit. It is added for every 8 areas of DYP.

  In the above case, the output signals are added by electrically connecting the plurality of first electrodes SE and the plurality of signal lines SL. However, the first electrodes SE and the signal lines SL are electrically connected. Alternatively, the output signals of the first electrodes SE and the signal lines SL are input to the sensor circuit 30, and the sensor circuit 30 performs an operation so as to add a plurality of output signals for each of the areas A1 and A2 of the display unit DYP. Good.

  In the above case, the plurality of first electrodes SE are electrically connected, the plurality of signal lines SL are electrically connected, and the output signal is added. However, the first electrode SE and the signal line SL are By electrically connecting at least one of them and adding the output signal, the number of connection terminals of the flexible substrate FC connected between the array substrate 10 and the sensor circuit 30 can be reduced.

  The counter substrate 20 includes a plurality of counter electrodes CE arranged to face the pixel electrode PE and the auxiliary capacitance line CsL. The counter electrode CE extends substantially parallel to the direction in which the scanning line GL and the auxiliary capacitance line CsL extend, and is arranged side by side in the direction in which the signal line SL extends. The counter electrode CE is arranged side by side with a predetermined interval in the direction in which the signal line SL extends so as not to face the first electrode SE. In this way, by arranging the counter electrode CE and the first electrode SE so as not to oppose each other, the wiring capacity of the first electrode SE can be reduced by about one digit. Can be improved.

  FIG. 8 is a diagram for explaining the operation of the display pixel PX when the contact position is detected in the display device according to the present embodiment. When detecting the contact position of a fingertip or a pen tip, the signal line driving circuit XD first applies a voltage of a predetermined magnitude to the signal line SL and sends a sensor signal from the scanning line driving circuit YD to the first electrode SE. The sensor signal output that is input and output from the potential Sig of the signal line SL and the first electrode SE is output to the sensor circuit 30. The sensor circuit 30 adds up the received potential Sig of the signal line SL for each of the plurality of signal lines SL arranged side by side in the area A2, and outputs the received sensor signal output to the area as necessary. Summing up for each of the plurality of first electrodes SE arranged side by side in A1. The sensor circuit 30 outputs sensor data obtained by digitally converting the received signal or the summed signal.

  For example, the size of the capacitance generated between the first electrode SE and the signal line SL changes depending on the distance between the fingertip and the first electrode SE, and is output from the potential Sig of the signal line SL and the first electrode SE. The sensor signal waveform changes. Therefore, the external signal source can detect the contact position of the fingertip from the sensor data.

  As described above, according to the present embodiment, the S / N ratio of the sensor can be improved by adding the potential Sig of the signal line SL and the sensor signal output from the first electrode SE, and the contact position can be improved. The detection sensitivity can be increased. That is, similarly to the display device according to the first embodiment described above, it is possible to improve the detection sensitivity of the contact position such as a fingertip and provide a display device with high operation accuracy.

  Further, when the counter electrode CE is formed on the array substrate 10, the contact position of the fingertip or the like can be similarly detected using the signal line SL and the first electrode SE as the sensor electrode.

Hereinafter, modified examples of the display device according to the embodiment will be described.
FIG. 9 is a plan view for explaining a modification of the display device according to the embodiment. In the display device shown in FIG. 9, between the rows of the display pixels PX, the two first electrodes SE ′ are arranged side by side in the direction in which the scanning lines GL extend. The first electrode SE ′ is bundled and electrically connected in a region around the display unit DYP for each region A1 ′ of the display unit DYP, and a plurality of output signals are added. As described above, by dividing the first electrode SE ′ in the direction in which the scanning line GL extends, the wiring load capacity of the first electrode SE ′ can be reduced, and the detection sensitivity of the contact position can be further increased. it can.

  FIG. 10 is a plan view for explaining a modification of the display device according to the embodiment. FIG. 10 shows a configuration example of the display unit DYP and the counter electrode CE of the array substrate 10. In this modification, the signal line SL and the auxiliary capacitance line CsL are used as sensor electrodes, and the auxiliary capacitance line CsL and the counter electrode CE are not electrically connected.

  FIG. 11 is a diagram for explaining an example of the operation of the display pixel PX when detecting the contact position. When detecting the contact position of a fingertip or a pen tip, first, the signal line driving circuit XD applies a voltage of a predetermined magnitude to the signal line SL and sends a sensor signal from the scanning line driving circuit YD to the auxiliary capacitance line CsL. The sensor signal output that is input and output from the potential Sig of the signal line SL and the auxiliary capacitance line CsL is output to the sensor circuit 30. The sensor circuit 30 adds up the received potentials Sig of the signal lines SL for each of the plurality of signal lines SL arranged in the region A2, and the received sensor signal output is a plurality of signals arranged in the region A1. Summing up for each auxiliary capacitance line CsL, and outputting sensor data obtained by digitally converting them.

  Note that the output signal of the auxiliary capacitance line CsL is bundled and electrically connected to a plurality of auxiliary capacitance lines CsL and added, and the output signal of the signal line SL is bundled and electrically connected to a plurality of signal lines SL. You may connect and add.

  Depending on the distance between the fingertip, the auxiliary capacitance line CsL, and the signal line SL, the size of the capacitance generated between the auxiliary capacitance line CsL and the signal line SL changes. From the potential Sig of the signal line SL and the auxiliary capacitance line CsL The output sensor signal waveform also changes. Therefore, the external signal source can detect the contact position of the fingertip from the sensor data.

  FIG. 12 is a plan view for explaining a modification of the display device according to the embodiment. FIG. 12 shows a configuration example of the display unit DYP and the counter electrode CE of the array substrate 10. In this modification, the signal line SL and the first electrode SE are used as sensor electrodes. The counter substrate 20 is provided with an electrode CEA that is arranged to face the first electrode SE and is electrically connected to the first electrode SE by transfer. The electrode CEA functions as a sensor electrode together with the first electrode SE.

  FIG. 13 is a diagram for explaining an example of the operation of the display pixel PX when detecting the contact position. When detecting the contact position of a fingertip or a pen tip, the signal line driving circuit XD first applies a voltage of a predetermined magnitude to the signal line SL and sends a sensor signal from the scanning line driving circuit YD to the first electrode SE. The sensor signal output that is input and output from the potential Sig of the signal line SL and the first electrode SE is output to the sensor circuit 30. The sensor circuit 30 adds up the received potentials Sig of the signal lines SL for each of the plurality of signal lines SL arranged in the region A2, and the received sensor signal output is a plurality of signals arranged in the region A1. Summing up for each first electrode SE and outputting sensor data obtained by digitally converting them.

  The output signal of the first electrode SE is bundled and electrically connected to a plurality of first electrodes SE, and added, and the output signal of the signal line SL is bundled and electrically connected to a plurality of signal lines SL. You may connect and add.

  Depending on the distance between the fingertip, the first electrode SE, and the signal line SL, the size of the capacitance generated between the first electrode SE and the signal line SL changes, and the potential Sig of the signal line SL and the first electrode SE change. The output sensor signal waveform also changes. Therefore, the external signal source can detect the contact position of the fingertip from the sensor data.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  SL ... signal line (sensor electrode), CE ... counter electrode, CsL ... auxiliary capacitance line (sensor electrode), LQ ... liquid crystal layer, PX ... display pixel, DYP ... display unit, PE ... pixel electrode, GL ... scanning line , SW, pixel switch, YD, scanning line drive circuit (drive circuit), XD, signal line drive circuit (drive circuit), ASW, switch circuit, SE, first electrode (sensor electrode), CEA, electrode, 10 ... Array substrate, 20 ... counter substrate, 30 ... sensor circuit, 40 ... image display circuit.

Claims (7)

A display unit including display pixels arranged in a matrix;
A pixel electrode arranged in the display pixel, a scanning line and a sensor electrode extending along a row in which the pixel electrode is arranged, a signal line extending in a column in which the pixel electrode is arranged, an array substrate,
A counter substrate comprising a counter electrode arranged to face the plurality of pixel electrodes;
A drive circuit for driving the sensor electrode and the signal line;
A sensor circuit that outputs a sensor signal to the drive circuit, receives signals from the sensor electrode and the signal line, and outputs sensor data;
A display device in which a plurality of sensor electrodes arranged in a direction in which the signal lines extend are electrically connected in a region around the display unit.   The display device according to claim 1, wherein the counter electrode is disposed so as to face the plurality of sensor electrodes arranged in a direction in which the signal line extends, and is electrically connected to the facing sensor electrodes. The counter electrode is arranged side by side in the direction in which the signal line extends,
The display device according to claim 1, wherein the sensor electrode is disposed to face a region between the counter electrodes.   The display device according to claim 1, further comprising amplification means for amplifying the sensor signal output from the sensor circuit.   The display device according to claim 4, wherein the amplifying unit is included in the drive circuit.   The display device according to claim 4, wherein the amplifying unit is provided on the array substrate. A display unit including display pixels arranged in a matrix;
A pixel electrode arranged in the display pixel, a scanning line and a sensor electrode extending along a row in which the pixel electrode is arranged, a signal line extending in a column in which the pixel electrode is arranged, an array substrate,
A counter substrate comprising a counter electrode arranged to face the plurality of pixel electrodes;
A drive circuit for driving the sensor electrode and the signal line;
While outputting a sensor signal to the drive circuit, receiving signals from the sensor electrode and the signal line, summing signals from the plurality of sensor electrodes arranged in a direction in which the signal line extends, And a sensor circuit that outputs sensor data by adding signals from the plurality of signal lines arranged in a direction in which the sensor electrode extends.

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