IP Library Granted Patent US 11,442,588
Granted Patent B2
US 11,442,588 · App. 17/316,609 · Granted Sep 13, 2022

Touch display device and touchscreen panel

Inventors: KwangJo Hwang (Paju-si, KR); DeukSu Lee (Paju-si, KR); JaeGyun Lee (Paju-si, KR); Yangsik Lee (Paju-si, KR)
Assignee: LG Display Co., Ltd.
G06F3/0446G06F3/0445G06F2203/04112
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Quick Facts
Patent No.
US 11,442,588
App. No.
17/316,609
Granted
Sep 13, 2022
Kind
B2
Abstract

A touch display device and a touchscreen panel. Even in the case in which touch electrodes have different sizes or shapes or a located in different positions, a difference in capacitance is not formed among the touch electrodes. High touch sensitivity can be obtained. The touch display device comprises a plurality of touch electrodes, wherein a first touch electrode of the plurality of touch electrodes occupies a first area and comprises first mesh-shaped electrode metal. The touch display device comprises first dummy metal in a same layer as the first mesh-shaped electrode metal and in the first area occupied by the first touch electrode, the first dummy metal being electrically disconnected from the first mesh-shaped electrode metal.

Claims (19)

1. A touch display device comprising:

a plurality of touch electrodes;

a plurality of touch lines electrically connected with all or part of the plurality of touch electrodes; and

a first bridge pattern electrically connecting two adjacent touch electrodes of the plurality of touch electrodes in a first direction,

wherein the plurality of touch lines and the plurality of touch electrodes are disposed on the same layer or on different layers,

wherein the first bridge pattern is disposed on a layer different from the plurality of touch electrodes, and

wherein among the plurality of touch electrodes, an edge of a touch electrode positioned in a corner region has a non-straight line shape and a non-vertical shape.

2. The touch display device of claim 1 , wherein among the plurality of touch electrodes, two touch electrodes adjacent in a second direction different from the first direction are integrated.

3. The touch display device of claim 2 , wherein a boundary portion of two touch electrodes adjacent in the second direction different from the first direction among the plurality of touch electrodes is insulated from the first bridge pattern and intersects the first bridge pattern.

4. The touch display device of claim 1 , further comprising a cathode layer and an encapsulation layer positioned on the cathode layer,

wherein the plurality of touch electrodes are located on the encapsulation layer.

5. The touch display device of claim 4 , further comprising color filters positioned on the encapsulation layer.

6. The touch display device of claim 5 , wherein each of the plurality of touch electrodes includes a plurality of open areas, and each of the plurality of open areas overlaps one or more color filters.

7. The touch display device of claim 1 , wherein the plurality of touch lines and the first bridge pattern are disposed on the same layer.

8. The touch display device of claim 1 , wherein each of the plurality of touch electrodes is a mesh type electrode metal.

9. The touch display device of claim 1 , further comprising at least one dummy metal formed in an area occupied by each of all or a portion of the plurality of touch electrodes,

wherein the at least one dummy metal is electrically disconnected from the corresponding touch electrode.

10. The touch display device of claim 1 , wherein the plurality of touch electrodes include a first touch electrode positioned in a region other than the corner region and a second touch electrode positioned in the corner region, and

wherein the first touch electrode and the second touch electrode have different shapes from each other.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 10, 2021
From: HWANG, KWANGJO; LEE, DEUKSU; LEE, JAEGYUN; LEE, YANGSIK
To: LG DISPLAY CO., LTD.
Reel/Frame 056192/0368 →
Priority Claims (1)
KR 10-2017-0068354 · Jun 1, 2017 · national
Continuity (3)
Continuation 16397955 · Apr 29, 2019
Continuation 15822464 · Nov 27, 2017
Related Publication 20210263618A1 · Aug 26, 2021
Cited By (1)
US 12,399,584