DISPLAY DEVICE AND TOUCH PANEL THEREOF

• US 20110115727A1
• Filed: 08/10/2010
• Published: 05/19/2011
• Est. Priority Date: 11/18/2009
• Status: Abandoned Application

• Current Assignee: Beijing FUNATE Innovation Technology Co., Ltd. (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Beijing FUNATE Innovation Technology Co., Ltd. (Hon Hai Precision Industry Co., Ltd.)
• Inventors: QIAN, LI, FENG, CHEN
• Application Number:
  US12/853,558
• Publication Number:
  US 20110115727A1
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• 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 3/0447 Position sensing using the local deformation of sensor cells
• CPC Class Codes: G06F 3/045 using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact

Abstract

A touch panel includes a first electrode plate, a second electrode plate, and a continuous transparent insulating layer. The first electrode plate includes a first conductive layer. The second electrode plate includes a second conductive layer opposite to and spaced from the first conductive layer. The continuous transparent insulating layer is located between the first conductive layer and the second conductive layer. At least one of first conductive layer and the second conductive layer includes a carbon nanotube structure.

Claims

1. A touch panel comprising:

a first electrode plate comprising a first conductive layer;

a second electrode plate comprising a second conductive layer opposite to and spaced from the first conductive layer; and

a continuous transparent insulating layer located between the first conductive layer and the second conductive layer, wherein at least one of the first conductive layer and the second conductive layer comprises a carbon nanotube structure.

2. The touch panel of claim 1, wherein the transparent insulating layer is made of polyethylene (PE), polyvinyl chloride (PVC), polystyrene, polymethyl methacrylate, purified water, terpilenol, propanol, methanol, ethanol, aether, carbon tetrachloride, white oil, oil of turpentine, olive oil, acetone, carbon bisulfide, glycerin, or trichloromethane.

3. The touch panel of claim 1, wherein a distance between the first electrode plate and the second electrode plate is larger than a thickness of the transparent insulating layer from the first electrode plate to the second electrode plate.

4. The touch panel of claim 1, further comprising an insulating frame disposed around a periphery of the transparent insulating layer and located between the first electrode plate and the second electrode plate.

5. The touch panel of claim 1, wherein the transparent insulating layer is in a liquid state, and the transparent insulating layer is sealed between the first electrode plate and the second electrode plate.

6. The touch panel of claim 5, further comprising an insulating frame located between the first electrode plate and the second electrode plate, wherein the insulating frame, the first electrode plate and the second electrode plate together define a chamber, and the transparent insulating layer is sealed in the chamber.

7. The touch panel of claim 6, wherein more than about 75 percent and less than 100 percent of the chamber is filled with the transparent insulating layer.

8. The touch panel of claim 6, wherein approximately 85 percent to approximately 96 percent of the chamber is filled with the transparent insulating layer.

9. The touch panel of claim 6, wherein a distance between the first electrode plate and the second electrode plate is in a range of from about 2 μ

m to about 10 μ

m, and a thickness of the transparent insulating layer ranges from about 1.5 μ

m to about 9 μ

m.

10. The touch panel of claim 1, wherein the transparent insulating layer is a soft transparent film directly positioned between the first conductive layer and the second conductive layer.

11. The touch panel of claim 10, wherein a distance between the first electrode plate and the second electrode plate is in a range from about 2 μ

m to about 10 μ

m, a thickness of the transparent insulating layer is smaller than 1 μ

m.

12. The touch panel of claim 1, wherein the carbon nanotube structure comprises at least one carbon nanotube film, at least one linear carbon nanotube structure, or a combination thereof.

13. The touch panel of claim 1, wherein the first electrode plate further comprises a first substrate and two spaced first electrodes, and the first conductive layer is disposed on the first substrate and electrically connects with the first electrodes;

the second electrode plate further comprises a second substrate and two spaced second electrodes, and the second conductive layer is disposed on the second substrate and electrically connects with the second electrodes;

the carbon nanotube structure is a carbon nanotube film of substantially parallel ultra-long carbon nanotubes;

opposite ends of at least one of the ultra-long carbon nanotubes connect with the first electrodes and second electrodes, respectively.

14. A touch panel comprising:

a first electrode plate comprising a first conductive layer;

a second electrode plate comprising a second conductive layer opposite to and spaced from the first conductive layer; and

a transparent insulating layer covering substantially an entire surface of the second electrode plate and spaced from the first conductive layer;

wherein at least one of the first conductive layer and the second conductive layer comprises a carbon nanotube structure.

15. The touch panel of claim 14, wherein the transparent insulating layer is a continuous layer.

16. The touch panel of claim 14, further comprising an insulating frame located between the first electrode plate and the second electrode plate, wherein the insulating frame, the first electrode plate, and the second electrode plate together define a chamber, and the transparent insulating layer is sealed in the chamber.

17. A display device comprising:

a touch panel comprising;

a first electrode plate comprising a first conductive layer;

a second electrode plate comprising a second conductive layer;

a first continuous transparent insulating layer located on the second conductive layer; and

a second continuous transparent insulating layer located on the first continuous transparent insulating layer and adjacent to the first conductive layer, the first continuous transparent insulating layer being different from the second continuous transparent insulating layer.

18. The display device of claim 17, wherein the first continuous transparent insulating layer is made of polythene (PE), polyvinyl chloride (PVC), polystyrene, polymethyl methacrylate, purified water, terpilenol, propanol, methanol, ethanol, aether, carbon tetrachloride, white oil, oil of turpentine, olive oil, acetone, carbon bisulfide, glycerin, or trichloromethane.

19. The display device of claim 18, wherein the second continuous transparent insulating layer is a layer of air.

20. The display device of claim 18, wherein the second continuous transparent insulating layer is a vacuum gap.