US 9,811,231 B2
Touch panel for reducing pins required for touch detection
Tzu-Chieh Huang, New Taipei (TW); Tung-Yang Tang, New Taipei (TW); and Hua-Min Tseng, New Taipei (TW)
Assigned to Wistron Corporation, New Taipei (TW)
Filed by Wistron Corporation, New Taipei (TW)
Filed on Apr. 13, 2016, as Appl. No. 15/97,288.
Claims priority of application No. 105106663 A (TW), filed on Mar. 4, 2016.
Prior Publication US 2017/0255303 A1, Sep. 7, 2017
Int. Cl. G06F 3/047 (2006.01)
CPC G06F 3/047 (2013.01) [G06F 2203/04111 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A touch panel, comprising:
a substrate comprising a plurality of touch areas; and
a touch element disposed in the touch areas of the substrate and comprising:
a plurality of first electrodes arranged in a first direction in the touch areas, wherein each of the first electrodes comprises a plurality of first electrode patterns;
a plurality of second electrodes electrically insulated from the first electrodes and arranged in a second direction that intersects the first direction in the touch areas, wherein each of the second electrodes comprises a plurality of second electrode patterns, and orthogonal projections of the first electrode patterns and the second electrode patterns on the substrate have a plurality of gaps therebetween; and
a plurality of third electrodes electrically insulated from the first electrodes and the second electrodes, wherein the number of the third electrodes is the same as the number of the touch areas, and each of the touch areas is disposed with one of the third electrodes, wherein each of the third electrodes comprises a plurality of third electrode patterns and a plurality of third connection portions, orthogonal projections of the third electrode patterns on the substrate are located in the gaps, the third electrode patterns do not overlap the first electrode patterns and the second electrode patterns, and each of the third connection portions electrically insulatingly intersects at least one of the first electrodes or at least one of the second electrodes and each of the third connection portions electrically connects adjacent two third electrode patterns, wherein the first electrodes arranged in the first direction and corresponding to different touch areas are electrically connected, and the second electrodes arranged in the second direction and corresponding to different touch areas are electrically connected, so that pins needed for the first electrodes are less than the number of the first electrodes, and the pins needed for the second electrode are less than the number of the second electrodes.