DISPLAY DEVICE AND TOUCH MODULE THEREOF

• US 20100188341A1
• Filed: 01/23/2009
• Published: 07/29/2010
• Est. Priority Date: 01/23/2009
• Status: Abandoned Application

• Current Assignee: Mitac Technology Corporation (MiTAC Holdings Corp.)
• Original Assignee: Mitac Technology Corporation (MiTAC Holdings Corp.)
• Inventors: Shen, Chang-Han
• Application Number:
  US12/358,679
• Publication Number:
  US 20100188341A1
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G02B 27/286 for controlling or changing the state of polarisation, e.g. transforming one polarisation state into another G02B5/3083 takes precedence; light guide coupling means utilising polarising elements G02B6/34
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/044 by capacitive means
• 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 module is provided to be applied to a display device. The touch panel includes a touch panel, a first retarder film, a second retarder film, and a polarizer. The touch panel has a display surface and an embedding surface opposite to each other. The first retarder film is disposed on the display surface, the second retarder film is disposed on the embedding surface, and the polarizer is disposed on the first retarder film.

Claims

1. A touch module, comprising:

a touch panel, having a display surface and an embedding surface;

a first retarder film, disposed on the display surface;

a second retarder film, disposed on the embedding surface; and

a polarizer, disposed on the first retarder film.

2. The touch module as claimed in claim 1, wherein the polarizer is a linear polarizer having a first grating extending along a first direction.

3. The touch module as claimed in claim 2, wherein the first retarder film and the second retarder film are of a ¼

wavelength retarder film, and the first retarder film and the second retarder film respectively have a fast axis grating, wherein the first retarder film and the second retarder film are arranged such that a 90 degrees deviation angle exists between extending directions of the two fast axis of the first retarder film and the second retarder film.

4. The touch module as claimed in claim 1, wherein the touch panel comprises a rigid substrate.

5. The touch module as claimed in claim 4, wherein the rigid substrate is a glass substrate.

6. The touch module as claimed in claim 1, wherein the touch panel is substantially consisting of a flexible substrate.

7. The touch module as claimed in claim 6, wherein the flexible substrate is a polyethylene terephthalate (PET) substrate.

8. The touch module as claimed in claim 1, wherein the touch panel is a resistive touch panel or a capacitive touch panel.

9. A display device, comprising:

a display module; and

a touch module as claimed in claim 1, disposed on the display module.

10. The display device as claimed in claim 9, wherein the display module is a liquid crystal display (LCD) device or an organic light emitting display (OLED) device.

11. The display device as claimed in claim 9, wherein the second retarder film of the touch module substantially contacts with the display module.

12. The display device as claimed in claim 9, wherein a gap exists between the touch module and the display module.

13. A touch module, comprising:

a touch panel, having a display surface and an embedding surface opposite to each other; and

a polarizer, disposed on the display surface of the touch panel and substantially contacting with the touch panel.

14. The touch module as claimed in claim 13, wherein the polarizer is a linear polarizer having a first grating extending along a first direction.

15. The touch module as claimed in claim 14, wherein the touch panel is substantially consisting of a flexible substrate only.

16. The touch module as claimed in claim 15, wherein the flexible substrate is a polyethylene terephthalate (PET) substrate.

17. The touch module as claimed in claim 13, wherein the touch panel is a resistive touch panel or a capacitive touch panel.

18. A display device, comprising:

a display module; and

a touch module as claimed in claim 13, disposed on the display module, and the embedding surface of the touch module substantially contacting with the display module.

19. The display device as claimed in claim 18, wherein the display module is a liquid crystal display device or organic light emitting display (OLED) device.