TOUCH DEVICE AND TOUCH DISPLAY PANEL

• US 20100149116A1
• Filed: 05/03/2009
• Published: 06/17/2010
• Est. Priority Date: 12/11/2008
• Status: Abandoned Application

• Current Assignee: AU Optronics Corporation
• Original Assignee: AU Optronics Corporation
• Inventors: Huang, Wei-Ming, Yang, Tun-Chun, Lee, Seok-Lyul
• Application Number:
  US12/434,681
• Publication Number:
  US 20100149116A1
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G06F 2203/04106 Multi-sensing digitiser, i.e. digitiser using at least two different sensing technologies simultaneously or alternatively, e.g. for detecting pen and finger, for saving power or for improving position detection
• CPC Class Codes: G06F 2203/04111 Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
• CPC Class Codes: G06F 2203/04112 Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/0416 Control or interface arrangements specially adapted for digitisers
• CPC Class Codes: G06F 3/0443 using a single layer of sensing electrodes
• CPC Class Codes: G06F 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
• CPC Class Codes: G09G 3/36 using liquid crystals

Abstract

A touch device includes a patterned sensing electrode structure, an insulating layer and a patterned common electrode layer. The patterned sensing electrode structure is disposed on a surface of a substrate, defining a plurality of displaying regions and a light-shielding region. The patterned sensing electrode structure corresponds to the light-shielding region, and exposes the displaying regions. The insulating layer covers the patterned sensing electrode structure. The patterned common electrode layer is disposed on the insulating layer, and the patterned common electrode layer includes a plurality of electrode portions corresponding to the displaying regions and a plurality of connecting portions disposed between the adjacent electrode portions and electrically connected to the electrode portions.

Claims

1. A touch device, formed on a surface of a substrate, the surface of the substrate defining a plurality of sensing regions arranged as a matrix formation, and each sensing region defining a plurality of displaying regions arranged as a matrix formation and a light-shielding region disposed between the displaying regions, the touch device comprising:

a patterned sensing electrode structure, disposed on the surface of the substrate, the patterned sensing electrode structure corresponding to the light-shielding region and exposing the displaying regions;

a first insulating layer, covering the substrate and the patterned sensing electrode structure; and

a patterned common electrode layer, disposed on the first insulating layer, the patterned common electrode layer comprising a plurality of electrode portions corresponding to the displaying regions and a plurality of connecting portions, the connecting portions being disposed between the adjacent electrode portions and over the light-shielding region, and the connecting portions being electrically connected to the electrode portions.

2. The touch device of claim 1, wherein the patterned sensing electrode structure comprises a plurality of first sensing series and a plurality of second sensing series perpendicular to the first sensing series.

3. The touch device of claim 2, wherein each first sensing series and each second sensing series have a plurality of sensing pads and a plurality of bridge lines.

4. The touch device of claim 3, further comprising a patterned transparent floating-electrode layer, disposed between the substrate and the patterned sensing electrode structure.

5. The touch device of claim 4, further comprising a second insulating layer, disposed between the patterned transparent floating-electrode layer and the patterned sensing electrode structure.

6. The touch device of claim 5, wherein the patterned transparent floating-electrode layer comprises a plurality of electrode sections, respectively corresponding to at least one of the sensing pads.

7. The touch device of claim 1, wherein the patterned common electrode layer comprises a meshed pattern, composed of the electrode portions and the connecting portions.

8. The touch device of claim 1, further comprising a patterned anti-reflective layer, disposed between the patterned sensing electrode structure and the substrate, the patterned anti-reflective layer having a same pattern as the patterned sensing electrode structure.

9. The touch device of claim 1, further comprising:

a color filter layer, disposed on the first insulating layer;

a patterned black matrix layer, disposed on the color filter layer, the patterned black matrix layer exposing the displaying regions; and

a third insulating layer, covering the patterned black matrix layer and the color filter layer.

10. The touch device of claim 9, wherein a width of the patterned sensing electrode structure is smaller than a width of the corresponding patterned black matrix layer.

11. A touch display panel, comprising:

a first substrate and a second substrate, being parallel to each other, the first substrate having a surface facing the second substrate, the surface of the first substrate defining a plurality of sensing regions, and each sensing region defining a plurality of displaying regions arranged as a matrix formation and a light-shielding region disposed between the displaying regions;

a liquid crystal layer, disposed between the first substrate and the second substrate;

a patterned sensing electrode structure, disposed on the surface of the first substrate, and the patterned sensing electrode structure corresponding to the light-shielding region and exposing the displaying regions;

a first insulating layer, covering the surface of the first substrate and the patterned sensing electrode structure; and

a patterned common electrode layer, disposed on the first insulating layer, the patterned common electrode layer comprising a plurality of electrode portions corresponding to the displaying regions and a plurality of connecting portions, the connecting portions being disposed between the adjacent electrode portions and electrically connected to the electrode portions.

12. The touch display panel of claim 11, wherein the patterned sensing electrode structure comprises a plurality of first sensing series and a plurality of second sensing series perpendicular to the first sensing series.

13. The touch display panel of claim 12, wherein each first sensing series and each second sensing series have a plurality of sensing pads and a plurality of bridge lines.

14. The touch display panel of claim 13, further comprising a patterned transparent floating-electrode layer, disposed between the first substrate and the patterned sensing electrode structure.

15. The touch display panel of claim 14, further comprising a second insulating layer disposed between the patterned transparent floating-electrode layer and the patterned sensing electrode structure.

16. The touch display panel of claim 15, wherein the patterned transparent floating-electrode layer comprises a plurality of electrode sections, respectively corresponding to at least one of the sensing pads.

17. The touch display panel of claim 11, wherein the patterned common electrode layer comprises a meshed pattern, composed of the electrode portions and the connecting portions.

18. The touch display panel of claim 11, further comprising a patterned anti-reflective layer, disposed between the patterned sensing electrode structure and the first substrate, the patterned anti-reflective layer having a same pattern as the patterned sensing electrode structure.

19. The touch display panel of claim 11, further comprising:

a color filter layer, disposed on the first insulating layer;

a patterned black matrix layer, disposed on the color filter layer, the patterned black matrix layer exposing the displaying regions; and

a third insulating layer, covering the patterned black matrix layer and the color filter layer.

20. The touch display panel of claim 19, wherein a width of the patterned sensing electrode structure is smaller than a width of the corresponding patterned black matrix layer.

21. The touch display panel of claim 11, wherein the surface of the first substrate further defines a plurality of sub-pixels arranged as a matrix formation, respectively corresponding to each displaying region.