Display Device

• US 20140118911A1
• Filed: 10/29/2013
• Published: 05/01/2014
• Est. Priority Date: 10/29/2012
• Status: Active Grant

• Current Assignee: Beijing BOE Display Technology Co Ltd (BOE Technology Group Co., Ltd.), BOE Technology Group Co., Ltd.
• Original Assignee: Beijing BOE Display Technology Co Ltd (BOE Technology Group Co., Ltd.), BOE Technology Group Co., Ltd.
• Inventors: Zhang, Chunbing, Tang, Wulijibaier
• Granted Patent: US 9,693,475 B2
• Time in Patent Office: Days
• US Class Current: 361/679.01
• CPC Class Codes: G02F 1/133308 Support structures for LCD panels, e.g. frames or bezels
• CPC Class Codes: G02F 1/133314 Back frames
• CPC Class Codes: G02F 1/133317 Intermediate frames, e.g. between backlight housing and front frame
• CPC Class Codes: G02F 2201/46 Fixing elements
• CPC Class Codes: H05K 5/02 Details
• CPC Class Codes: H05K 5/0221 Locks; Latches
• CPC Class Codes: H05K 7/14 Mounting supporting structure in casing or on frame or rack

Abstract

The present invention discloses a display device. The display device includes a display panel and a module at the back side of the display panel, the module includes a back plate and a mold frame which is provided between the back plate and the display panel, the display device further includes a magnetic device, and the display panel and the mold frame are attached to each other and detached from each other by the magnetic device. In the present invention, the display panel is fixedly attached to the mold frame of the module through a magnetic field, avoiding the problem that the display panel is unable to be detached from the module when they are fixed with a double-sided adhesive, so as to achieve the effect that the display device is frameless while facilitating subsequent maintenance.

Claims

1. A display device, comprising:

a display panel and a module at the back side of the display panel, the module comprising a back plate and a mold frame, wherein, the mold frame is provided between the back plate and the display panel, wherein,

the display device further comprises a magnetic device, and the display panel and the mold frame are attached to each other and detached from each other through the magnetic device.

2. The display device according to claim 1, wherein the magnetic device comprises one or more magnets which are fixedly attached to the display panel and provided between the display panel and the mold frame, and the magnets are attracted to the mold frame through magnetic field they generates so that the display panel is fixedly attached to the mold frame through the magnets.

3. The display device according to claim 2, wherein the mold frame has polarity opposite to that of the magnets, at positions corresponding to the magnets, or the mold frame is provided with metal sheets which can be attracted to the magnet, at the positions corresponding to the magnets.

4. The display device according to claim 1, wherein the magnetic device comprises one or more magnets which are fixedly attached to the mold frame and provided between the display panel and the mold frame, and the magnets are attracted to the display panel through magnetic field they generate so that the display panel is fixedly attached to the mold frame through the magnets.

5. The display device according to claim 4, wherein the display panel has a polarity opposite to that of the magnet at the positions corresponding to the magnets, or the display panel are provided with metal sheets which can be attracted to the magnet at the positions corresponding to the magnets.

6. The display device according to claim 1, wherein the magnetic device comprises a magnetic force adjustable member for adjusting attraction between the display panel and the mold frame.

7. The display device according to claim 6, wherein the magnetic force adjustable member comprises one or more electromagnetic coils formed at corresponding positions on the display panel, wherein,

when the electromagnetic coils are powered on, they generate magnetic force to allow the display panel and the mold frame to attract mutually;

and

when the electromagnetic coils are powered off, they stop generating magnetic force to allow the display panel and the mold frame to separate from each other.

8. The display device according to claim 7, wherein the mold frame has a polarity opposite to that generated when the electromagnetic coils are powered on at a position corresponding to the electromagnetic coils, or the mold frame is provided with metal sheets which can be attracted by magnetic force generated when the electromagnetic coils are powered on at positions corresponding to the electromagnetic coils.

9. The display device according to claim 4, wherein the magnetic device further comprises a magnetic force adjustable member for adjusting attraction between the display panel and the mold frame.

10. The display device according to claim 9, wherein the magnetic force adjustable member comprises one or more electromagnetic coils formed at positions on the display panel corresponding to the magnets, wherein,

when detaching the display panel from the mold frame, the electromagnetic coils are powered on so as to generate magnetic force with which the display panel and the mold frame are separated from each other, wherein the magnetic force is larger than that of the magnet which allows the display panel and the mold frame to attract mutually.

11. The display device according to claim 9, wherein the magnetic force adjustable member comprises one or more electromagnetic coils formed at positions on the display panel corresponding to the magnets, wherein,

during normal operation of the display device, the electromagnetic coils are powered on so as to generate magnetic force with which the display panel and the mold frame are attracted mutually.

12. The display device according to claim 2, wherein the magnets are adhered to the display panel through a double-sided adhesive tape.

13. The display device according to claim 4, wherein the magnets re adhered to the mold frame through a double-sided adhesive tape.

14. The display device according to claim 2, wherein the magnets are permanent soft magnets.

15. The display device according to claim 10, wherein each of the electromagnetic coils comprises a plurality of layers of metal pattern, a passivation layer is formed between two adjacent layers of metal pattern, two adjacent layers of metal pattern are interconnected through a via hole formed in the passivation layer, and among the plurality of layers of metal pattern, the first layer of metal pattern and the last layer of metal pattern are connected with two electrodes of a power supply through leads respectively.

16. The display device according to claim 15, wherein the display panel is a liquid crystal display panel which comprises a first substrate and a second substrate arranged opposite to each other;

wherein

the plurality of layers of metal pattern are formed in the first substrate and/or the second substrate.

17. The display device according to claim 16, wherein the first substrate is an array substrate and the second substrate is a color filter substrate.

18. The display device according to claim 2, wherein the display device further comprises one or more buffer pads located between the display panel and the mold frame.

19. The display device according to claim 16, wherein the module is a backlight module which further comprises a backlight unit, and the back plate is located outside the backlight unit.

20. The display device according claim 1, wherein, the display device is an organic light emitting diode display device, and the display panel is an organic light emitting diode display panel.