TOUCH LIQUID CRYSTAL DISPLAY DEVICE

• US 20140160376A1
• Filed: 02/13/2014
• Published: 06/12/2014
• Est. Priority Date: 08/27/2012
• Status: Active Grant

• Current Assignee: Shanghai Tianma Micro-Electronics Company Limited (Tianma Microelectronics Company Limited)
• Original Assignee: Shanghai Tianma Micro-Electronics Company Limited (Tianma Microelectronics Company Limited)
• Inventors: WANG, Lihua, Yao, Qijun, Ma, Jun
• Granted Patent: US 9,733,508 B2
• Time in Patent Office: Days
• US Class Current: 349/12
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G02F 1/1343 Electrodes reflective electrodes G02F1/133553
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• CPC Class Codes: G06F 2203/04104 Multi-touch detection in digitiser, i.e. details about the simultaneous detection of a plurality of touching locations, e.g. multiple fingers or pen and finger
• CPC Class Codes: G06F 2203/04107 Shielding in digitiser, i.e. guard or shielding arrangements, mostly for capacitive touchscreens, e.g. driven shields, driven grounds
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• CPC Class Codes: G06F 3/0443 using a single layer of sensing electrodes
• CPC Class Codes: G06F 3/047 using sets of wires, e.g. crossed wires

Abstract

A touch liquid crystal display device is disclosed. The display device includes a first substrate and a second substrate arranged oppositely, and a touch layer being formed on the first substrate. The touch layer includes a plurality of drive electrodes and a plurality of sensing electrodes thereon, where the drive and sensing electrodes include a plurality of transverse metal wires and a plurality vertical metal wires interlaced with each other. In addition, the second substrate includes a plurality of transverse drive lines and a plurality of vertical drive lines, where the number of transverse metal wires is less than the number of transverse drive lines, or the number of vertical metal wires is less than the number of vertical drive lines.

Claims

1. A touch liquid crystal display device, comprising:

a first substrate and a second substrate arranged oppositely; and

a touch layer being formed on the first substrate,

wherein the touch layer comprises a plurality of drive electrodes and a plurality of sensing electrodes thereon, wherein the drive and sensing electrodes comprise a plurality of transverse metal wires and a plurality of vertical metal wires interlaced with each other,

wherein the second substrate comprises a plurality of transverse drive lines and a plurality of vertical drive lines, wherein the number of transverse metal wires is less than the number of transverse drive lines, or the number of vertical metal wires is less than the number of vertical drive lines.

2. The touch liquid crystal display device according to claim 1, wherein adjacent drive and sensing electrodes are arranged in a transverse direction.

3. The touch liquid crystal display device according to claim 2, wherein at least one of:

a) the number of transverse metal wires of the drive electrodes is less than the number of transverse drive lines;

b) the number of transverse metal wires of the sensing electrodes is less than the number of transverse drive lines;

or

c) the number of transverse metal wires of the drive electrodes is less than the number of transverse drive lines and the number of transverse metal wires of the sensing electrodes is less than the number of transverse drive lines.

4. The touch liquid crystal display device according to claim 3, wherein the width of the traverse metal wires is less than the width of the traverse drive lines.

5. The touch liquid crystal display device according to claim 4, wherein the width of the traverse metal wires is between about 10 μ

m and 30 μ

m.

6. The touch liquid crystal display device according to claim 2, wherein the transverse metal wires of adjacent drive and sensing electrodes are staggered.

7. The touch liquid crystal display device according to claim 1, wherein adjacent drive and sensing electrodes are arranged in a vertical direction.

8. The touch liquid crystal display device according to claim 7, wherein at least one of:

a) the number of vertical metal wires of the drive electrodes is less than the number of vertical drive lines;

b) the number of vertical metal wires of the sensing electrodes is less than the number of vertical drive lines;

or

c) the number of vertical metal wires of the drive electrode is less than the number of vertical drive lines and the number of vertical metal wires of the sensing electrode is less than the number of vertical drive lines.

9. The touch liquid crystal display device according to claim 8, wherein the width of the vertical metal wires is less than the width of the vertical drive lines.

10. The touch liquid crystal display device according to claim 9, wherein the width of the vertical metal wires is between about 10 μ

m and 30 μ

m.

11. The touch liquid crystal display device according to claim 7, wherein vertical metal wires of adjacent drive and sensing electrodes are staggered.

12. The touch liquid crystal display device according to claim 1, wherein the transverse drive line is a scanning drive line, and the vertical drive line is a data drive line.

13. The touch liquid crystal display device according to claim 1, wherein a ratio of the number of the transverse metal wires to the number of the transverse drive lines or a ratio of the number of the vertical metal wires to the number of the vertical drive lines is between about 1:

3 and 2;

3.

14. The touch liquid crystal display device according to claim 1, wherein the transverse metal wires or the vertical metal wires are arranged uniformly in the touch layer.

15. The touch liquid crystal display device according to claim 1, wherein a light-shielding layer is provided between the first substrate and the touch layer;

and wherein in a direction perpendicular to the light-shielding layer, a projection of a light transmission region of the touch layer on the light-shielding layer is in a light transmission region of the light-shielding layer.

16. A touch liquid crystal display device comprising:

a first substrate and a second substrate arranged oppositely; and

a touch layer being formed on the first substrate, the touch layer comprising a plurality of drive electrodes and a plurality of sensing electrodes thereon, wherein the drive and sensing electrodes comprise a plurality of traverse metal wires and vertical metal wires interlaced with each other,

wherein the second substrate comprises a plurality of traverse drive lines and a plurality of vertical drive lines thereon, wherein the width of the traverse metal wires is less than the width of the traverse drive lines, or the width of the vertical metal wires is less than the width of the vertical drive lines.

17. The touch liquid crystal display device according to claim 16, wherein adjacent drive and sensing electrodes are arranged in a traverse direction.

18. The touch liquid crystal display device according to claim 17, wherein at least one of:

a) the width of the traverse metal wires of the drive electrode is less than width of the traverse drive lines;

b) the width of the traverse metal wires of the sensing electrode is less than the width of the traverse drive lines;

or

c) the width of the traverse metal wires of the drive electrode is less than the width of the traverse drive lines and the width of the traverse metal wires of the sensing electrode is less than the width of the traverse drive lines.

19. The touch liquid crystal display device according to claim 18, wherein the width of the traverse metal wires is between about 10 μ

m and 20 μ

m.

20. The touch liquid crystal display device according to any one of claim 17, wherein the traverse metal wires of adjacent drive and sensing electrodes are staggered.

21. The touch liquid crystal display device according to claim 17, wherein adjacent drive and sensing electrodes are arranged in a vertical direction.

22. The touch liquid crystal display device according to claim 21, wherein at least one of:

a) the width of the vertical metal wires of the drive electrode is less than the width of the vertical drive lines;

b) the width of the vertical metal wires of the sensing electrode is less than the width of the vertical drive lines;

or

c) the width of the vertical metal wires of the drive electrode is less than the width of the vertical drive lines and the width of the vertical metal wires of the sensing electrode is less than the width of the vertical drive lines.

23. The touch liquid crystal display device according to claim 22, wherein the width of the vertical metal wires is between about 10 μ

m and 20 μ

m.

24. The touch liquid crystal display device according to any one of claim 21, wherein the vertical metal wires of adjacent drive and sensing electrodes are staggered.