Touch sensor, display device, display module, and electronic device

Abstract

Sensing time of a touch sensor is shortened to increase responsiveness of touch sensing. A display device includes a gate driver, a plurality of touch sensors, and a plurality of touch wirings. The gate driver has a function of supplying a scan signal to the plurality of touch wirings at the same timing, and the touch sensors in different positions sense a plurality of touches at the same timing. In this manner, the responsiveness of touch sensing is increased. The gate driver has a function of controlling a scan signal for refreshing display and a scan signal used by the touch sensor for sensing.

1 . (canceled) 
     
     
         2 . A display device comprising a pixel comprising:
 a first subpixel comprising:
 a first transistor; and 
 a first liquid crystal element comprising a first electrode, a second electrode, and an insulating film between the first electrode and the second electrode; 
   a second subpixel comprising:
 a second transistor; and 
 a second liquid crystal element comprising a third electrode, a fourth electrode, and the insulating film between the third electrode and the fourth electrode; and 
   a first wiring between the second electrode and the fourth electrode,   wherein a sensor element of a touch sensor is formed between the first wiring and the second electrode and between the first wiring and the fourth electrode.   
     
     
         3 . The display device according to  claim 2 , wherein each of the second electrode and the fourth electrode has a comb-like shape. 
     
     
         4 . The display device according to  claim 2 , wherein the second electrode, the fourth electrode, and the first wiring are over and in contact with the insulating film. 
     
     
         5 . The display device according to  claim 2 , wherein each of the first transistor and the second transistor comprises a semiconductor layer comprising polysilicon. 
     
     
         6 . The display device according to  claim 2 , wherein each of the first transistor and the second transistor comprises a semiconductor layer comprising metal oxide. 
     
     
         7 . The display device according to  claim 2 , further comprising a gate driver,
 wherein the gate driver is configured to supply a first signal to a first scan line electrically connected to a first gate electrode of the first transistor, and   wherein the gate driver is configured to supply a second signal to the first wiring.   
     
     
         8 . A display device comprising a pixel comprising:
 a first subpixel comprising:
 a first transistor comprising a first gate electrode; and 
 a first liquid crystal element comprising a first electrode, a second electrode, and an insulating film between the first electrode and the second electrode; 
   a second subpixel comprising:
 a second transistor comprising a second gate electrode; and 
 a second liquid crystal element comprising a third electrode, a fourth electrode, and the insulating film between the third electrode and the fourth electrode; and 
   a first wiring between the second electrode and the fourth electrode,   wherein a sensor element of a touch sensor is formed between the first wiring and the second electrode and between the first wiring and the fourth electrode,   wherein a first scan line is electrically connected to the first gate electrode,   wherein a second scan line is electrically connected to the second gate electrode, and   wherein the first wiring is arranged between the first scan line and the second scan line and extends in the same direction as the first scan line and the second scan line.   
     
     
         9 . The display device according to  claim 8 , wherein each of the second electrode and the fourth electrode has a comb-like shape. 
     
     
         10 . The display device according to  claim 8 , wherein the second electrode, the fourth electrode, and the first wiring are over and in contact with the insulating film. 
     
     
         11 . The display device according to  claim 8 , wherein each of the first transistor and the second transistor comprises a semiconductor layer comprising polysilicon. 
     
     
         12 . The display device according to  claim 8 , wherein each of the first transistor and the second transistor comprises a semiconductor layer comprising metal oxide. 
     
     
         13 . The display device according to  claim 8 , further comprising a gate driver,
 wherein the gate driver is configured to supply a first signal to the first scan line, and   wherein the gate driver is configured to supply a second signal to the first wiring.