TOUCH PANEL AND TOUCH DISPLAY DEVICE

• US 20140307181A1
• Filed: 04/02/2014
• Published: 10/16/2014
• Est. Priority Date: 04/12/2013
• Status: Abandoned Application

• Current Assignee: Shenzhen O-Film Tech Company Limited
• Original Assignee: Shenzhen O-Film Tech Company Limited
• Inventors: TANG, Genchu, DONG, Shengcai, LIU, Wei, TANG, Bin
• Application Number:
  US14/243,197
• Publication Number:
  US 20140307181A1
• Time in Patent Office: Days
• US Class Current: 349/12
• 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
• 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

Abstract

A touch panel includes: a glass cover plate including a display area and a non-display area located at an outer edge of the display area; and a touch sensing module laminated on the glass cover plate. The touch sensing module includes a first conductive layer and a second conductive layer. The first conductive layer includes a plurality of first conductive strips; the second conductive layer includes a plurality of second conductive strips. The touch sensing module includes a sensing area defined by edges of the first conductive layer and the second conductive layer. The sensing area includes a visual area and a non-visual area located at an outer edge of the visual area. A projection of the visual area on the glass cover plate coincides with the display area, a projection of the non-visual area on the glass cover plate falls within the non-display area.

Claims

1. A touch panel, comprising:

a glass cover plate comprising a display area and a non-display area located at an outer edge of the display area; and

a touch sensing module laminated on the glass cover plate;

wherein the touch sensing module comprises a first conductive layer and a second conductive layer laminated in a thickness direction of the glass cover plate, the first conductive layer comprises a plurality of first conductive strips extending along a first direction, the plurality of first conductive strips are spaced and insulated from each other;

the second conductive layer comprises a plurality of second conductive strips extending along a second direction, the plurality of second conductive strips are spaced and insulated from each other;

projections of the first conductive strips on a plane where the second conductive strips are located intersect the second conductive strips;

the touch sensing module comprises a sensing area defined by edges of the first conductive layer and the second conductive layer, the sensing area comprises a visual area and a non-visual area located at an outer edge of the visual area, a projection of the visual area on the glass cover plate coincides with the display area, a projection of the non-visual area on the glass cover plate falls within the non-display area.

2. The touch panel according to claim 1, wherein the non-visual area has a strip-like shape, a width of the non-visual area is greater than 0.5 mm but less than the width of the non-display area.

3. The touch panel according to claim 2, wherein the width of the non-visual area is greater than or equal to 1 mm.

4. The touch panel according to claim 1, wherein the number of the non-visual area is two, the two non-visual areas are located at opposite sides of the visual area.

5. The touch panel according to claim 1, further comprising a first dielectric layer and a second dielectric layer laminated on the glass cover plate in a thickness direction thereof, wherein the first dielectric layer defines a meshed first groove, the second dielectric layer defines a meshed second groove, the first conductive strip and the second conductive strip comprises meshed conductive wires intersected with each other, the first conductive strips and the second conductive strips are received in the first groove and the second groove, respectively;

the conductive wires are formed by curing conductive materials filled in the first groove and the second groove.

6. The touch panel according to claim 5, wherein the conductive wires have a width from 0.2 μ

m to 5 μ

m.

7. The touch panel according to claim 5, further comprising a first adhesive layer, a second adhesive layer, a first transparent substrate, and a second transparent substrate, wherein the first adhesive layer, the first dielectric layer, the first transparent substrate, the second adhesive layer, the second transparent substrate, and the second dielectric layer are laminated on the glass cover plate in that order.

8. The touch panel according to claim 5, further comprising a first adhesive layer, a second adhesive layer, a first transparent substrate, and a second transparent substrate, wherein the first adhesive layer, the first dielectric layer, the first transparent substrate, the second adhesive layer, the second dielectric layer, and the second transparent substrate are laminated on the glass cover plate in that order.

9. The touch panel according to claim 5, further comprising an adhesive layer and a transparent substrate, wherein the adhesive layer, the first dielectric layer, the transparent substrate, and the second dielectric layer are laminated on the glass cover plate in that order.

10. The touch panel according to claim 5, further comprising an adhesive layer and a transparent substrate, wherein the first dielectric layer, the adhesive layer, the second dielectric layer, and the transparent substrate are laminated on the glass cover plate in that order.

11. The touch panel according to claim 5, further comprising an adhesive layer and a transparent substrate, wherein the first dielectric layer, the adhesive layer, the transparent substrate, and the second dielectric layer are laminated on the glass cover plate in that order.

12. The touch panel according to claim 5, wherein a distance between two adjacent conductive wires in the first conductive layer and the second conductive layer is in a range from 50 μ

m to 1000 μ

m.

13. The touch panel according to claim 1, wherein the first conductive layer and the second conductive layer has a thickness from 1 μ

m to 10 μ

m.

14. The touch panel according to claim 5, wherein a thickness of the first conductive layer is less than or equal to a depth of the first groove;

a thickness of the second conductive layer is less than or equal to a depth of the second groove, a depth-to-width ratio of the first groove and the second groove is greater than or equal to 1.

15. The touch panel according to claim 5, further comprising a shielding layer located between the glass cover plate and the touch sensing module, wherein a projection of the shielding layer on the glass cover plate coincides with the non-display area.

16. The touch panel according to claim 15, wherein the shielding layer is made of shielding ink.

17. A touch display device, comprising a display and a touch panel according to claim 1, wherein a projection of the display area of the glass cover plate on the display falls within the display.