Touch display device promoting touch accuracy

• US 10,048,785 B2
• Filed: 11/25/2015
• Issued: 08/14/2018
• Est. Priority Date: 10/20/2015
• Status: Active Grant

• Current Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd. (TCL Technology Group Corp.), Wuhan China Star Optoelectronics Technology Co., Ltd. (TCL Technology Group Corp.)
• Original Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd. (TCL Technology Group Corp.), Wuhan China Star Optoelectronics Technology Co., Ltd. (TCL Technology Group Corp.)
• Inventors: Huang, Yaoli, Xie, Jianxing, Huang, Chun-hung, Tsai, Yucheng, Cao, Chang
• Primary Examiner(s): Ahn, Sejoon
• Application Number:
  US14/916,564
• Publication Number:
  US 20170262104A1
• Time in Patent Office: 993 Days
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/0418 for error correction or compensation, e.g. based on parallax, calibration or alignment
• CPC Class Codes: G06F 3/0443 using a single layer of sensing electrodes
• CPC Class Codes: G06F 3/0445 using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer

Abstract

The embodiment of the present invention discloses a touch display device, including: a common electrode layer, having a plurality of driving regions with driving region electrodes inside, which are arranged in a rectangular array, and a plurality of floating regions with floating region electrodes inside located between the driving regions of tow adjacent columns, and the two adjacent floating regions are located in space and construct a floating region pair, and isolating regions among the driving regions and the floating regions; floating connection lines are distributed at the sensing layer, and one point of a floating connection line is electrically coupled to the floating region electrode in one floating region in the floating region pair with a first via, and an another point of the floating connection line is electrically coupled to the floating region electrode in the other floating region in the floating region pair with a second via.

Claims

1. A touch display device promoting touch accuracy, comprising:

a sensing layer, an isolation layer and a common electrode layer from top to bottom in sequence, wherein the common electrode layer comprises a plurality of driving regions having with driving region electrodes inside and is arranged in a rectangular array, and a plurality of floating regions having floating region electrodes inside and is located between the driving regions of two adjacent columns, and the two adjacent floating regions are located in space to construct a floating region pair, and isolating regions among the driving regions and the floating regions;

floating connection lines are distributed at the sensing layer, and one point of a floating connection line is electrically coupled to the floating region electrode in one floating region in the floating region pair with a first via in the isolation layer, and another point of the floating connection line is electrically coupled to the floating region electrode in other floating region in the floating region pair with a second via in the isolation layer,

wherein the common electrode layer further comprises a driving lead line penetrating the isolating regions between two adjacent floating regions, wherein;

the driving region electrodes in the two adjacent driving regions in the same row are electrically coupled with the driving lead line,

wherein the driving region electrode and the floating region electrode are both electrically coupled to a common voltage output end in a driving circuit as the touch display device shows an image;

or the driving region electrode is electrically coupled to the common voltage output end in the driving circuit, and the floating region electrode is set null as the touch display device implements touch scanning,

wherein the sensing layer further comprises a plurality of first sensing regions corresponding to the floating regions one by one, and the first sensing region is located right above the floating region corresponded with the first sensing region, and the first sensing region comprises a sensing region electrode,

wherein the sensing region electrode in the first sensing region is one of a metal mesh, a transparent Indium Tin Oxide (ITO) electrode and a carbon nano-tube electrode, and

wherein the sensing layer further comprises a plurality of second sensing regions corresponding to the driving regions one by one, and the second sensing region is located right above the driving region corresponded with the second sensing region, and the second sensing region comprises a sensing region electrode, wherein;

the sensing region electrode in the second sensing region is electrically coupled to the driving region electrode in the driving region corresponded with the second sensing region.

2. The touch display device promoting touch accuracy according to claim 1, wherein the sensing region electrode in the second sensing region is electrically coupled to the driving region electrode in the driving region corresponded with the second sensing region.

3. The touch display device promoting touch accuracy according to claim 1, wherein the sensing region electrode in the second sensing region is one of a metal mesh, a transparent Indium Tin Oxide (ITO) electrode and a carbon nano-tube electrode.