US2024019728A1PendingUtilityA1

Detecting device and display device

75
Assignee: JAPAN DISPLAY INCPriority: Nov 29, 2019Filed: Sep 26, 2023Published: Jan 18, 2024
Est. expiryNov 29, 2039(~13.3 yrs left)· nominal 20-yr term from priority
Inventors:Koichiro Adachi
G02F 1/13338G06F 3/0446G02F 1/133514G06F 3/0412G09F 9/30G06F 3/0448G06F 3/0443G06F 3/0445
75
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Claims

Abstract

A detecting device includes a plurality of detection electrodes extending in a first direction along a substrate and disposed apart from each other in a second direction orthogonal to the first direction, and a plurality of dummy electrodes provided between the detection electrodes. The detection electrodes each have a plurality of openings.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A detecting device comprising
 detection electrodes arranged in a first direction and a second direction crossing the first direction, the detection electrodes each having four sides, wherein   each of the four sides has a recess portion and a protrusion,   the recess portion and the protrusion are alternately and continuously arranged in the first direction, and   a plurality of the protrusions arranged in the first direction in one of the detection electrodes face a plurality of the protrusions of another one of the detection electrodes adjacent to the one of the detection electrodes in the second direction.   
     
     
         2 . The detecting device according to  claim 1 , wherein
 the detection electrodes are arranged in a matrix.   
     
     
         3 . The detecting device according to  claim 1 , wherein
 each of the detection electrodes has a square-like shape.   
     
     
         4 . The detecting device according to  claim 1 , wherein
 each of the recess portions of one of the detection electrodes has a circular arc shape along a first virtual circle and is recessed toward inside the one of the detection electrodes; and   each of the protrusions of the one of the detection electrodes has a circular arc shape along a second virtual circle and protrudes toward outside the one of the detection electrodes.   
     
     
         5 . The detecting device according to  claim 1 , wherein
 a radius of the recess portions is smaller than a radius of the protrusions.   
     
     
         6 . A detecting device comprising
 detection electrodes arranged in a first direction and a second direction crossing the first direction, the detection electrodes each having four sides, wherein   each of the four sides has a recess portion and a protrusion,   the recess portion and the protrusion are alternately and continuously arranged in the first direction, and   a plurality of the protrusions arranged in the first direction in one of the detection electrodes face a plurality of the recess portions of another one of the detection electrodes adjacent to the one of the detection electrodes in the second direction.   
     
     
         7 . The detecting device according to  claim 6 , wherein
 the detection electrodes are arranged in a matrix.   
     
     
         8 . The detecting device according to  claim 6 , wherein
 each of the detection electrodes has a square-like shape.   
     
     
         9 . The detecting device according to  claim 6 , wherein
 each of the recess portions of one of the detection electrodes has a circular arc shape along a first virtual circle and is recessed toward inside the one of the detection electrodes; and   each of the protrusions of the one of the detection electrodes has a circular arc shape along a second virtual circle and protrudes toward outside the one of the detection electrodes.   
     
     
         10 . The detecting device according to  claim 6 , wherein
 a radius of the recess portions is smaller than a radius of the protrusions.   
     
     
         11 . A display device comprising:
 pixel electrodes; and   common electrodes opposed to the pixel electrodes and arranged in a first direction and a second direction crossing the first direction, the common electrodes each having four sides, wherein   each of the four sides has a recess portion and a protrusion,   the recess portion and the protrusion are alternately and continuously arranged in the first direction, and   a plurality of the protrusions of the one of the common electrodes arranged in the first direction in one of the common electrodes face a plurality of the protrusions of another one of the common electrodes adjacent to the one of the common electrodes in the second direction.   
     
     
         12 . The display device according to  claim 11 , wherein
 the common electrodes are arranged in a matrix.   
     
     
         13 . The display device according to  claim 11 , wherein
 each of the common electrodes has a square-like shape.   
     
     
         14 . The display device according to  claim 11 , wherein
 each of the recess portions of one of the common electrodes has a circular arc shape along a first virtual circle and is recessed toward inside the one of the common electrodes; and   each of the protrusions of the one of the common electrodes has a circular arc shape along a second virtual circle and protrudes toward outside the one of the common electrodes.   
     
     
         15 . The display device according to  claim 11 , wherein
 a radius of the recess portions is smaller than a radius of the protrusions.   
     
     
         16 . A display device comprising
 common electrodes arranged in a first direction and a second direction crossing the first direction, the common electrodes each having four sides, wherein   each of the four sides has a recess portion and a protrusion,   the recess portion and the protrusion are alternately and continuously arranged in the first direction, and   a plurality of the protrusions arranged in the first direction in one of the common electrodes face a plurality of the recess portions of another one of the common electrodes adjacent to the one of the common electrodes in the second direction.   
     
     
         17 . The display device according to  claim 16 , wherein
 the common electrodes are arranged in a matrix.   
     
     
         18 . The display device according to  claim 16 , wherein
 each of the common electrodes has a square-like shape.   
     
     
         19 . The display device according to  claim 16 , wherein
 each of the recess portions of one of the common electrodes has a circular arc shape along a first virtual circle and is recessed toward inside the one of the common electrodes; and   each of the protrusions has a circular arc shape along a second virtual circle and protrudes toward outside the one of the common electrodes.   
     
     
         20 . The detecting device according to  claim 16 , wherein
 a radius of the recess portions is smaller than a radius of the protrusions.

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