Touch panel and touch display device

Abstract

A touch panel includes a substrate and a plurality of sensing units. The sensing units are disposed on the substrate. Each sensing unit includes two sensing bars respectively having a first end and a second end. The sensing bars extend along a direction and cross a touch region. The second end of one of the sensing bars of each sensing unit is configured for receiving a first signal respectively. The first ends of the sensing bars of each sensing unit are electrically connected to each other and configured for receiving a second signal. The second end of the other one of the sensing bars of each sensing unit is configured for receiving a third signal respectively.

What is claimed is:  
     
         1 . A touch panel, comprising:
 a substrate, having a touch region and a peripheral region; and   a plurality of sensing units, disposed on the substrate, each sensing unit comprising two sensing bars adjacent to each other respectively, each sensing bar having a first end and a second end respectively, each first end and each second end being disposed adjacent to two opposite sides of the substrate respectively, and the sensing bars of the sensing units being parallel to each other and extending along a direction to cross the touch region, wherein the second end of one of the sensing bars of each sensing unit is configured for receiving a first signal respectively, the first ends of the sensing bars of each sensing unit are electrically connected to each other and configured for receiving a second signal respectively, and the second end of the other one of the sensing bars of each sensing unit is configured for receiving a third sensing signal respectively.   
     
     
         2 . The touch panel according to  claim 1 , further comprising a plurality of signal terminal sets, and each signal terminal set comprising a first signal terminal, a second signal terminal, and a third signal terminal, wherein the second end of one of the sensing bars of each sensing unit is electrically connected to each first signal terminal respectively, the first ends of the sensing bars of each sensing unit are electrically connected to each second signal terminal respectively, and the second end of the other one of the sensing bars of each sensing unit is electrically connected to each third signal terminal respectively. 
     
     
         3 . The touch panel according to  claim 2 , further comprising a plurality of first conductive lines, a plurality of second conductive lines, and a plurality of third conductive lines, the first conductive lines, the second conductive lines and the third conductive lines being disposed on the substrate in the peripheral region, wherein each first conductive line connects each first signal terminal to the second end of one of the sensing bars of each sensing unit, each second conductive line connects each second signal terminal to the first ends of the sensing bars of each sensing unit, and each third conductive line connects each third signal terminal to the second end of the other one of the sensing bars of each sensing unit. 
     
     
         4 . The touch panel according to  claim 1 , wherein each sensing unit further comprises a connecting part, and each connecting part connects the first ends of the sensing bars of each sensing unit respectively. 
     
     
         5 . The touch panel according to  claim 1 , wherein each sensing bar comprises a transparent conductive material. 
     
     
         6 . The touch panel according to  claim 1 , wherein the substrate comprises a glass substrate, a color filter substrate, an array substrate or a polarizer. 
     
     
         7 . A touch display device, comprising:
 a display device, having a displaying surface, and the display device comprising a plurality of pixels arranged in an array; and   a touch panel, disposed on the displaying surface, and the touch panel comprising:
 a substrate, having a touch region and a peripheral region; and 
 a plurality of sensing units, disposed on the substrate, each sensing unit comprising two sensing bars adjacent to each other respectively, each sensing bar having a first end and a second end respectively, each first end and each second end being disposed adjacent to two opposite sides of the substrate respectively, and the sensing bars of the sensing units being parallel to each other and extending along a direction to cross the touch region, wherein the second end of one of the sensing bars of each sensing unit is configured for receiving a first signal respectively, the first ends of the sensing bars of each sensing unit are electrically connected to each other and configured for receiving a second signal respectively, and the second end of the other one of the sensing bars of each sensing unit is configured for receiving a third sensing signal respectively. 
   
     
     
         8 . The touch display device according to  claim 7 , wherein the direction is parallel to a row direction of the array. 
     
     
         9 . The touch display device according to  claim 7 , wherein the direction is parallel to a column direction of the array. 
     
     
         10 . The touch display device according to  claim 7 , further comprising a plurality of signal terminal sets, and each signal terminal set comprising a first signal terminal, a second signal terminal, and a third signal terminal, wherein the second end of one of the sensing bars of each sensing unit is electrically connected to each first signal terminal respectively, the first ends of the sensing bars of each sensing unit are electrically connected to each second signal terminal respectively, and the second end of the other one of the sensing bars of each sensing unit is electrically connected to each third signal terminal respectively. 
     
     
         11 . The touch display device according to  claim 10 , further comprising a plurality of first conductive lines, a plurality of second conductive lines, and a plurality of third conductive lines, the first conductive lines, the second conductive lines and the third conductive lines being disposed on the substrate in the peripheral region, wherein each first conductive line connects each first signal terminal to the second end of one of the sensing bars of each sensing unit, each second conductive line connects each second signal terminal to the first ends of the sensing bars of each sensing unit, and each third conductive line connects each third signal terminal to the second end of the other one of the sensing bars of each sensing unit. 
     
     
         12 . The touch display device according to  claim 7 , wherein each sensing unit further comprises a connecting part, and each connecting part connects the first ends of the sensing bars of each sensing unit respectively. 
     
     
         13 . The touch display device according to  claim 7 , wherein each sensing bar comprises a transparent conductive material. 
     
     
         14 . The touch display device according to  claim 7 , wherein the substrate comprises a glass substrate, a color filter substrate, an array substrate or a polarizer. 
     
     
         15 . The touch display device according to  claim 7 , wherein each sensing unit overlaps at least one row or at least one column of the pixels. 
     
     
         16 . The touch display device according to  claim 15 , wherein the sensing bars of each sensing unit overlap the row or the column of the pixels corresponding thereto or are disposed at two sides of the row or the column of the pixels respectively.