Electromagnetic induction antenna plate, back-light and display device

• US 9,927,566 B2
• Filed: 07/20/2012
• Issued: 03/27/2018
• Est. Priority Date: 07/22/2011
• Status: Active Grant

• Current Assignee: Beijing BOE Optoelectronics Technology Co Ltd. (BOE Technology Group Co., Ltd.)
• Original Assignee: Beijing BOE Optoelectronics Technology Co Ltd. (BOE Technology Group Co., Ltd.)
• Inventors: Zhou, Hao, Ma, Qing
• Primary Examiner(s): Lee, Jong-Suk (James)
• Assistant Examiner(s): Dunay, Christopher E
• Application Number:
  US13/699,218
• Publication Number:
  US 20130188395A1
• Time in Patent Office: 2,076 Days
• Field of Search: 362627, 362630, 362631, 349 58, 349 59, 345179, 345173-175
• CPC Class Codes: G02B 6/0011 the light guides being planar or of plate-like form
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/046 by electromagnetic means

Abstract

Embodiments of the invention provides an electromagnetic induction antenna plate, a backlight and a display device, and the electromagnetic induction antenna plate comprises a wiring layer and a fixing structure for attaching the wiring layer to a back plate of a backlight, wherein the wiring layer comprises a first surface facing the back plate and a second surface coated with a reflective material and facing a light guide plate of the backlight when mounted to the backlight.

Claims

1. A backlight comprising:

a back plate,

a light guide plate, and

an electromagnetic induction antenna plate that is provided between the light guide plate and the back plate, wherein the electromagnetic induction antenna plate comprises;

a wiring layer, and

a fixing structure;

wherein the fixing structure wraps around the wiring layer and the back plate and attaches the wiring layer to the back plate,

wherein the fixing structure is disposed on at least one end of the wiring layer, exposing a middle portion of the wiring layer;

wherein the wiring layer comprises a first surface and a second surface, the first surface of the wiring layer faces the back plate, and the second surface of the wiring layer is coated with a reflective material and faces the light guide plate, and

wherein the light guide plate is disposed outside of the fixing structure and is not fixed by the fixing structure.

2. The backlight according to claim 1, wherein the first surface of the wiring layer is attached to the back plate, and the second surface is attached to the light guide plate.

3. The backlight according to claim 1, wherein the fixing structure has two right-angle bends, and a distance between the two right-angle bends are a sum of thicknesses of the wiring layer and the back plate.

4. The backlight according to claim 1, wherein the backlight comprises a rubber frame and the fixing structure is embedded into or attached to the rubber frame.

5. The backlight according to claim 4, wherein an embedded depth of the fixing structure into the rubber frame is equal to a thickness of the fixing structure.

6. The backlight according to claim 1, wherein the fixing structure is made of a flexible circuit board.

7. The backlight according to claim 1, wherein the reflective material is a white reflective material.

8. A display device comprising a display panel and the backlight according to claim 1.

9. The backlight according to claim 1, wherein the second surface of the wiring layer faces the light guide plate through the exposed portion of the fixing structure.

10. The backlight according to claim 1, wherein the wiring layer is in direct contact with the light guide plate of the backlight.