Touch panel and touch display device

Abstract

A touch panel and a touch display device. The touch panel includes a plurality of touch electrodes disposed in the same layer. A touch electrode includes a touch sensing region and a capacitance adjustment region. The touch sensing region is configured to transmit a touch signal. The capacitance adjustment region is configured to reduce at least one of capacitance-to-ground of the touch electrode or coupling capacitance between two adjacent touch electrodes.

What is claimed is: 
     
         1 . A touch panel, comprising:
 a plurality of touch electrodes disposed in a same layer comprising a touch sensing region and a capacitance adjustment region, 
 wherein the touch sensing region is configured to transmit a touch signal, and the capacitance adjustment region is configured to reduce at least one of capacitance-to-ground of the touch electrode or coupling capacitance between two adjacent touch electrodes of the plurality of touch electrodes. 
     
     
         2 . The touch panel according to  claim 1 , wherein the capacitance adjustment region is provided with an invalid electrode, and the invalid electrode is disposed in a same layer as the touch electrode and is floated. 
     
     
         3 . The touch panel according to  claim 1 , wherein the touch sensing region is disposed around the capacitance adjustment region. 
     
     
         4 . The touch panel according to  claim 3 , wherein a first length of the capacitance adjustment region is smaller than a second length of the touch sensing region, and a first width of the capacitance adjustment region is smaller than a second width of the touch sensing region, wherein the first length is a size of a long side of the capacitance adjustment region, the second length is a size of a long side of the touch sensing region, the first width is a size of a short side of the capacitance adjustment region, and the second width is a size of a short side of the touch sensing region. 
     
     
         5 . The touch panel according to  claim 4 , wherein a distance between a side of the touch sensing region adjacent to a side of the capacitance adjustment region and a corresponding side of the capacitance adjustment region is greater than or equal to 50 µm and the first width is in a range of 150 µm to 300 µm. 
     
     
         6 . The touch panel according to  claim 2 , wherein a shape of the invalid electrode comprises at least one of a rectangle, a triangle, a regular hexagon, or a circle. 
     
     
         7 . The touch panel according to  claim 1 , wherein the capacitance adjustment region is located at an edge of the touch sensing region. 
     
     
         8 . The touch panel according to  claim 1 , wherein the touch panel is a mutual capacitance touch panel, and the touch electrode comprises a first electrode, wherein the first electrode comprises the touch sensing region and the capacitance adjustment region. 
     
     
         9 . The touch panel according to  claim 1 , wherein the touch panel is a mutual capacitance touch panel, and the touch electrode comprises a second electrode, wherein the second electrode comprises the touch sensing region and the capacitance adjustment region. 
     
     
         10 . The touch panel according to  claim 1 , wherein the capacitance adjustment region is hollowed out. 
     
     
         11 . The touch panel according to  claim 1 , wherein the capacitance adjustment region is filled with an insulating layer. 
     
     
         12 . The touch panel according to  claim 1 , wherein the touch panel is a self-capacitance touch panel. 
     
     
         13 . The touch panel according to  claim 1 , wherein a shape of the capacitance adjustment region is the same as or different from a shape of the touch electrode. 
     
     
         14 . The touch panel according to  claim 1 , wherein the touch sensing region comprises at least two touch sensing sub-regions, the capacitance adjustment region comprises at least two capacitance adjustment sub-regions, and each touch sensing sub-region of the at least two touch sensing sub-regions is correspondingly provided with at least one of the at least two capacitance adjustment sub-regions. 
     
     
         15 . A touch display device, comprising: a layered display panel and the touch panel according to  claim 1 . 
     
     
         16 . The touch display device according to  claim 15 , further comprising: a transparent cover plate, wherein the transparent cover plate is disposed on a side of the touch panel facing away from the display panel. 
     
     
         17 . The touch display device according to  claim 15 , wherein the capacitance adjustment region is provided with an invalid electrode, and the invalid electrode is disposed in a same layer as the touch electrode and is floated. 
     
     
         18 . The touch display device according to  claim 15 , wherein the touch sensing region is disposed around the capacitance adjustment region. 
     
     
         19 . The touch display device according to  claim 18 , wherein a first length of the capacitance adjustment region is smaller than a second length of the touch sensing region, and a first width of the capacitance adjustment region is smaller than a second width of the touch sensing region, wherein the first length is a size of a long side of the capacitance adjustment region, the second length is a size of a long side of the touch sensing region, the first width is a size of a short side of the capacitance adjustment region, and the second width is a size of a short side of the touch sensing region. 
     
     
         20 . The touch display device according to  claim 19 , wherein a distance between a side of the touch sensing region adjacent to a side of the capacitance adjustment region and a corresponding side of the capacitance adjustment region is greater than or equal to 50 µm, and the first width is in a range of 150 µm to 300 µm.