DISPLAY MODULE AND DISPLAY DEVICE

• US 20190011760A1
• Filed: 04/05/2017
• Published: 01/10/2019
• Est. Priority Date: 04/13/2016
• Status: Active Grant

• Current Assignee: BOE Technology Group Co., Ltd.
• Original Assignee: BOE Technology Group Co., Ltd.
• Inventors: WANG, Zifeng, REN, Yan, HU, Nannan, CAO, Lei, LIN, She
• Granted Patent: US 10,444,557 B2
• Time in Patent Office: Days
• CPC Class Codes: F21V 29/70 characterised by passive heat-dissipating elements, e.g. heat-sinks
• CPC Class Codes: G02F 1/133 Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements arrangements or circuits for control of liquid crystal elements in a matrix, not structurally associated with these elements G09G3/36
• CPC Class Codes: G02F 1/1333 Constructional arrangements; Manufacturing methodsG02F1/135, G02F1/136 take precedence
• CPC Class Codes: G02F 1/133308 Support structures for LCD panels, e.g. frames or bezels
• CPC Class Codes: G02F 1/133385 with cooling means, e.g. fans
• CPC Class Codes: G02F 1/13452 Conductors connecting driver circuitry and terminals of panels
• CPC Class Codes: H05K 1/0203 Cooling of mounted components H05K1/0272 takes precedence
• CPC Class Codes: H05K 7/2039 characterised by the heat transfer by conduction from the heat generating element to a dissipating body arrangements for increasing/decreasing heat-transfer, e.g. fins details, F28F13/00
• CPC Class Codes: H05K 7/20454 with a conformable or flexible structure compensating for irregularities, e.g. cushion bags, thermal paste
• CPC Class Codes: H05K 7/20963 Heat transfer by conduction from internal heat source to heat radiating structure H05K7/20972 takes precedence

Abstract

The present disclosure relates to a display module and a display device. The display module includes a display panel, at least one chip-on-film, a printed circuit board and a cover plate, wherein: the printed circuit board is located on a back side of the display panel; one end of the chip-on-film is connected with the display panel, the other end of the chip-on-film is bent towards the back side of the display panel and is connected with a printed circuit board, with a chip being packaged in a portion of the chip-on-film which is bent towards the back side of the display panel; the cover plate is located on the back side of the printed circuit board and covers the same; the cover plate is provided with thermal conductive blocks which are in thermal contact with the chip at each location of the cover plate corresponding to one of the chip-on-film respectively. The display module according to the present disclosure improves the assembly convenience of the display module, improves the heat dissipation performance of the chip, and further improves the product quality of the display device.

Claims

1. A display module comprising a display panel, at least one chip-on-film, a printed circuit board and a cover plate, wherein,

the printed circuit board is located on a back side of the display panel;

one end of the chip-on-film is connected with the display panel, the other end of the chip-on-film is bent towards the back side of the display panel and is connected with a printed circuit board, with a chip being packaged in a portion of the chip-on-film which is bent towards the back side of the display panel;

the cover plate is located on the back side of the printed circuit board and covers the same;

the cover plate being provided with thermal conductive blocks which are in thermal contact with the chip at each location of the cover plate corresponding to one of the chip-on-film respectively.

2. The display module according to claim 1,

wherein the thermal conductive block is a thermal conductive rubber block.

3. The display module according to claim 1,

wherein a notch is provided at each position of the cover plate corresponding to one of the chip-on-film, and the thermal conductive blocks are fitted in the notches by interference fit respectively.

4. The display module according to claim 3,

wherein the thermal-conducting block comprises a first stopper and a second stopper positioned on either side of the cover plate respectively, and a connecting portion fitted with the notches by interference fit.

5. The display module according to claim 3,

wherein a pair of limiting protrusions are provided at an entrance of the notch.

6. The display module according to claim 1,

wherein the display module further comprises a front frame and a metal back housing connected with the front frame, with the display panel, the at least one chip-on-film, the printed circuit board and the cover plate being located between the front frame and the metal back housing, and the thermal conductive blocks being in thermal contact with the metal back housing.

7. The display module according to claim 1,

wherein the display module further comprises a front frame and a metal back housing connected with the front frame, with a heat sink being provided inside the metal back housing, the display panel, the at least one chip-on-film, the printed circuit board and the cover plate being located between the front frame and the metal back housing, and the thermal conductive blocks being in thermal contact with the heat sink.

8. The display module according to claim 7,

wherein the heat sink is bonded by adhesive onto the inner surface of the back housing.

9. The display module according to claim 7,

wherein the heat sink has a laminated structure which comprises at least one of a graphite layer, a metal layer, and a thermal conductive adhesive layer.

10. A display device, comprising the display module according to claim 1.

11. A display device, comprising the display module according to claim 2.

12. A display device, comprising the display module according to claim 3.

13. A display device, comprising the display module according to claim 4.

14. A display device, comprising the display module according to claim 5.

15. A display device, comprising the display module according to claim 6.

16. A display device, comprising the display module according to claim 7.

17. A display device, comprising the display module according to claim 8.

18. A display device, comprising the display module according to claim 9.