Touch liquid crystal display module having polarizer film comprising compensating layer, polarization layer, and polarization-protective layer

• US 9,726,923 B2
• Filed: 12/16/2013
• Issued: 08/08/2017
• Est. Priority Date: 08/30/2013
• Status: Active Grant

• Current Assignee: Beijing BOE Optoelectronics Technology Co Ltd. (BOE Technology Group Co., Ltd.), BOE Technology Group Co., Ltd.
• Original Assignee: Beijing BOE Optoelectronics Technology Co Ltd. (BOE Technology Group Co., Ltd.), BOE Technology Group Co., Ltd.
• Inventors: Xue, Yanna, Chen, Xiaochuan, Xue, Hailin, Che, Chuncheng, Wang, Lei
• Primary Examiner(s): Arendt, Paisley L
• Application Number:
  US14/388,620
• Publication Number:
  US 20150261027A1
• Time in Patent Office: 1,331 Days
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G02F 1/133514 Colour filters
• CPC Class Codes: G02F 1/133528 Polarisers
• CPC Class Codes: G02F 1/133536 Reflective polarizers G02F1/13362 takes precedence
• CPC Class Codes: G02F 1/133562 on the viewer side
• CPC Class Codes: G02F 1/13363 Birefringent elements, e.g. for optical compensation
• CPC Class Codes: G02F 2202/28 Adhesive materials or arrangements
• 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

Abstract

The present invention provides a touch LCM comprising an array substrate and a color film substrate provided opposite to each other, wherein an optical film set is provided at a side of the color film substrate away from the array substrate, comprising a touch signal feedback layer, a touch signal receiving layer and an upper polarizer film provided there between. With the design of integrating the upper polarizer film, the touch signal feedback layer and the touch signal receiving layer into the optical film set, the optical film set has both the polarizing function in the conventional sense and the function of touch electrode.

Claims

1. A touch liquid crystal display module, comprising an array substrate and a color film substrate provided opposite to each other;

wherein an optical film set is provided at a side of the color film substrate away from the array substrate, and the optical film set comprises a touch signal feedback layer, a touch signal receiving layer and an upper polarizer film provided therebetween;

wherein the touch liquid crystal display module further comprises a lower polarizer film which is provided at a side of the array substrate away from the color film substrate, and a multilayer reflective polarizer film which is provided at a side of the lower polarizer film away from the array substrate; and

wherein the upper polarizer film comprises a compensating layer, a polarization layer, and a polarization-protective layer;

the polarization layer is provided between and in direct contact with the polarization-protective layer and the compensating layer; and

the polarization-protective layer is provided between the touch signal receiving layer and the polarization layer.

2. The touch liquid crystal display module of claim 1, wherein the touch signal feedback layer is provided between the color film substrate and the upper polarizer film.

3. The touch liquid crystal display module of claim 2, wherein the optical film set further comprises a surface processing layer;

the touch signal receiving layer is provided between the upper polarizer film and the surface processing layer.

4. The touch liquid crystal display module of claim 3, further comprising a top cap which is provided at a side of the optical film set away from the color film substrate.

5. The touch liquid crystal display module of claim 2, further comprising a top cap which is provided at a side of the optical film set away from the color film substrate.

6. The touch liquid crystal display module of claim 1, further comprising a first bonding layer, through which the touch signal feedback layer is bonded with the color film substrate.

7. The touch liquid crystal display module of claim 6, further comprising a top cap which is provided at a side of the optical film set away from the color film substrate.

8. The touch liquid crystal display module of claim 6, wherein the first bonding layer is made of pressure-sensitive adhesive.

9. The touch liquid crystal display module of claim 1, wherein the lower polarizer film comprises a compensating layer, a polarization layer and a polarization-protective layer;

the polarization layer is provided between the compensating layer and the polarization-protective layer; and

the compensating layer is provided between the array substrate and the polarization layer.

10. The touch liquid crystal display module of claim 9, further comprising a top cap which is provided at a side of the optical film set away from the color film substrate.

11. The touch liquid crystal display module of claim 9, wherein the compensating layer is made of a polymer material with negative birefringence;

the polarization layer is made of polyvinyl alcohol, and the polarization protecting layer is made of triacetyl cellulose.

12. The touch liquid crystal display module of claim 1, further comprising a second bonding layer through which the lower polarizer film is bonded with the array substrate, and a third bonding layer through which the multilayer reflective polarizer film is bonded with the lower polarizer film.

13. The touch liquid crystal display module of claim 12, further comprising a top cap which is provided at a side of the optical film set away from the color film substrate.

14. The touch liquid crystal display module of claim 12, wherein the second and third bonding layers are made of pressure-sensitive adhesive.

15. The touch liquid crystal display module of claim 1, further comprising a top cap which is provided at a side of the optical film set away from the color film substrate.

16. The touch liquid crystal display module of claim 1, wherein the compensating layer is made of a polymer material with negative birefringence;

the polarization layer is made of polyvinyl alcohol, and the polarization protecting layer is made of triacetyl cellulose.