DISPLAY DEVICE

• US 20120299844A1
• Filed: 10/17/2011
• Published: 11/29/2012
• Est. Priority Date: 05/25/2011
• Status: Abandoned Application

• Current Assignee: HannStar Display Corporation
• Original Assignee: HannStar Display Corporation
• Inventors: Huang, Chien-Hsiang
• Application Number:
  US13/275,062
• Publication Number:
  US 20120299844A1
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• CPC Class Codes: G06F 3/044 by capacitive means

Abstract

The display device includes a touch plate, a sensing plate, a first distance and a second distance. The touch plate includes a first area having a first thickness and a second area having a second thickness. The first thickness is larger than the second thickness. The sensing plate is disposed below the touch plate. The first distance is a shortest distance between the sensing plate and the touch plate on the first area. The second distance is a shortest distance between the sensing plate and the touch plate on the second area. The first distance is shorter than the second distance.

Claims

1. A display device, comprising:

a touch plate including;

a first area having a first thickness; and

a second area having a second thickness, wherein the first thickness is larger than the second thickness;

a sensing plate disposed below the touch plate;

a first distance being a shortest distance between the sensing plate and the touch plate on the first area; and

a second distance being a shortest distance between the sensing plate and the touch plate on the second area, wherein the first distance is shorter than the second distance.

2. A display device of claim 1, being one of a liquid-crystal touch-panel display device and an organic-light-emitting-diode touch-panel display device, wherein:

the touch plate includes a cover lens; and

the touch plate includes a material being one selected from a group consisting of a glass, a quartz, a poly(methyl methacrylate), a polycarbonate, and a poly(ethylene terephthalate).

3. A display device of claim 1, further comprising plural liquid-crystal pixel structures below the sensing plate, wherein:

the sensing plate includes a transparent indium-tin-oxide sensing plate; and

the display device has a space between the touch plate and the sensing plate, wherein the space is filled with an adhesive in a way being one of a full fill and a partial fill, so as to adhere the touch plate to the sensing plate, wherein the adhesive includes a transparent adhesive.

4. A display device of claim 1, wherein the sensing plate sends out a signal including an information of a sensed position on the sensing plate, when sensing a capacitance variation on the sensed position as an object touches a touched position, corresponding to the sensed position, on the touch plate, wherein the touched position is located right above the sensed position.

5. A display device of claim 1, wherein:

the first thickness is one of a fixed thickness and a variable thickness, over the first area;

the second thickness remains unchanged all over the second area;

the touch plate has a surrounding edge area; and

the first area includes an edge area disposed on the surrounding edge area to form a frame structure.

6. A display device of claim 5, wherein the first area further includes a central area being one of a strip area and a grid area, each of which is disposed within the surrounding edge area to form a bolstering structure.

7. A display device, comprising:

a touch plate including a protruding structure protruding downwards; and

a sensing plate disposed below the touch plate, and directly contacted with the protruding structure.

8. A display device of claim 7, being one of a liquid-crystal touch-panel display device and an organic-light-emitting-diode touch-panel display device, wherein:

the touch plate includes a cover lens; and

the touch plate includes a material being one selected from a group consisting of a glass, a quartz, a poly(methyl methacrylate), a polycarbonate, and a poly(ethylene terephthalate).

9. A display device of claim 7, further comprising plural liquid-crystal pixel structures below the sensing plate, wherein:

the sensing plate includes a transparent indium-tin-oxide sensing plate; and

the display device has a space between the touch plate and the sensing plate, wherein the space is filled with an adhesive in a way being one of a full fill and a partial fill, so as to adhere the touch plate to the sensing plate, wherein the adhesive includes a transparent adhesive.

10. A display device of claim 7, wherein the sensing plate sends out a signal including an information of a sensed position on the sensing plate, when sensing a capacitance variation on the sensed position as an object touches a touched position, corresponding to the sensed position, on the touch plate, wherein the touched position is located right above the sensed position.

11. A display device of claim 7, wherein the touch plate has a surrounding edge area, and the protruding structure is disposed on the surrounding edge area to form a frame structure.

12. A display device of claim 11, wherein the protruding structure includes one of a strip structure and a grid structure, each of which is disposed within the surrounding edge area to form a bolstering structure.

13. A display device, comprising:

a touch plate receiving a touch-control command from a user, including;

a first part having a surface and a first thickness; and

a second part extended from the surface, and having a second thickness, wherein the first thickness and the second thickness have a sum being a usually-used thickness of the touch plate.

14. A display device of claim 13, being one of a liquid-crystal touch-panel display device and an organic-light-emitting-diode touch-panel display device, wherein:

the touch plate includes a cover lens; and

the touch plate includes a material being one selected from a group consisting of a glass, a quartz, a poly(methyl methacrylate), a polycarbonate, and a poly(ethylene terephthalate).

15. A display device of claim 13, further comprising:

a sensing plate disposed below the touch plate; and

plural liquid-crystal pixel structures disposed below the sensing plate.

16. A display device of claim 15, wherein:

the sensing plate includes a transparent indium-tin-oxide sensing plate; and

the display device has a space between the touch plate and the sensing plate, wherein the space is filled with an adhesive in a way being one of a full fill and a partial fill, so as to adhere the touch plate to the sensing plate, wherein the adhesive includes a transparent adhesive.

17. A display device of claim 15, wherein the sensing plate sends out a signal including an information of a sensed position on the sensing plate, when sensing a capacitance variation on the sensed position as an object touches a touched position, corresponding to the sensed position, on the touch plate, wherein the touched position is located right above the sensed position.

18. A display device of claim 13, wherein the touch plate has a surrounding edge area, and the second part includes an edge part disposed on the surrounding edge area to form a frame structure.

19. A display device of claim 18, wherein the second part further includes a central part being one of a strip part and a grid part, each of which is disposed within the surrounding edge area to form a bolstering structure.

20. A display device of claim 13, wherein the first thickness is one of two states being thinner than and equal to 90% of the usually-used thickness of the touch plate.