Circuit board and display device

Patent metadata

Field	Value
Publication number	US-10244620-B2
Application number	US-201615272608-A
Country	US
Kind code	B2
Filing date	Sep 22, 2016
Priority date	Oct 27, 2015
Publication date	Mar 26, 2019
Grant date	Mar 26, 2019

Abstract

A circuit board and a display device are disclosed. The circuit board is configured to be bonded onto a display substrate; the circuit board includes a bonding connection end, which includes a base film and a plurality of first connecting terminals disposed on the base film; regions, which are corresponding to at least part of the first connecting terminals, of the base film comprises a transparent membrane material. The circuit board improves the product quality monitoring level during the bonding process, and decreases the product risks.

First claim

What is claimed is:

1. A circuit board, which is configured for being bonded onto a display substrate, comprising:
a bonding connection end, which comprises a base film and a plurality of first connecting terminals disposed on the base film,
wherein, regions, which are corresponding to at least part of the first connecting terminals, of the base film comprise a transparent membrane material;
the circuit board further comprises a multilayer structure, at least one layer of the multilayer structure is a transparent layer, at least one layer of the multilayer structure is an opaque layer, and the region, which is corresponding to at least one first connecting terminal, of the opaque layer is removed.

2. The circuit board according to claim 1 , wherein, the plurality of first connecting terminals are arranged in a row, the regions, which are corresponding to the first connecting terminals located at a center position and both ends of the row, of the base film comprise the transparent membrane material.

3. The circuit board according to claim 2 , wherein, the center position and both ends of the row of the first connecting terminals on the base film are each provided two first connecting terminals, respectively, and the two first connecting terminals are bonded with two second connecting terminals of the display substrate, respectively.

4. The circuit board according to claim 3 , wherein, a spacing region between the two first connecting terminals are bonded with a third connecting terminal, which is disposed at a spacing region between the two second connecting terminals.

5. The circuit board according to claim 1 , wherein, the plurality of first connecting terminals are arranged in a row, and all regions, which are corresponding to the row of the first connecting terminals, of the base film comprise the transparent membrane material.

6. The circuit board according to claim 5 , wherein, the row of the first connecting terminals are configured to be correspondingly bonded with a row of second connecting terminals on the display substrate; third connecting terminals are further disposed at part of spacing regions of the row of the second connecting terminals, the third connecting terminals are configured to be correspondingly bonded onto part of spacing regions of the row of the first connecting terminals.

7. The circuit board according to claim 1 , wherein, the display substrate is an array substrate or a color filter substrate.

8. The circuit board according to claim 7 , wherein, the first connecting terminals are corresponding to a black matrix of the color filter substrate.

9. The circuit board according to claim 1 , wherein, the regions comprising the transparent membrane material and other regions comprising another material have same thermal resistance.

10. A display device, comprising a display substrate and the circuit board according to claim 1 , wherein the circuit board is bonded onto the display substrate.

11. The display device according to claim 10 , wherein, the display substrate is an array substrate or a color filter substrate.

12. The display device according to claim 11 , wherein, the first connecting terminals are corresponding to a black matrix of the color filter substrate.

13. The display device according to claim 10 , wherein, the plurality of first connecting terminals are arranged in a row, the regions, which are corresponding to the first connecting terminals located at a center position and both ends of the row, of the base film comprise the transparent membrane material.

14. The display device according to claim 13 , wherein, the center position and both ends of the row of the first connecting terminals on the base film have two first connecting terminals, respectively, and the two first connecting terminals are bonded with two second connecting terminals of the display substrate, respectively.

15. The display device according to claim 14 , wherein, a spacing region between the two first connecting terminals are bonded with a third connecting terminal, which is disposed at a spacing region between the two second connecting terminals.

16. The display device according to claim 15 , wherein, the third connecting terminal is grounded or suspended.

17. The display device according to claim 16 , wherein, the row of first connecting terminals are configured to be correspondingly bonded with a row of second connecting terminals on the display substrate; third connecting terminals are further disposed at part of spacing regions of the row of the second connecting terminals, the third connecting terminals are correspondingly bonded onto part of spacing regions of the row of the first connecting terminals.

18. The circuit board according to claim 1 , wherein the transparent layer is closer to the first connecting terminal compared to the opaque layer.

19. The circuit board according to claim 1 , wherein each of the first connecting terminals is in a strip shape; and the plurality of first connecting terminals have same one extension direction.

20. The circuit board according to claim 1 , wherein the plurality of first connecting terminals are separated from and insulated with each other;
the plurality of first connecting terminals are arranged in a row, the regions, which are corresponding to the first connecting terminals located at a center position and both ends of the row, of the base film comprise the transparent membrane material;
the center position and both ends of the row of the first connecting terminals on the base film are each provided two first connecting terminals, respectively, and the two first connecting terminals are bonded with two second connecting terminals of the display substrate, respectively;
an orthographic projection of each of the first connecting terminals on the display substrate is within an orthographic projection of a corresponding second connecting terminal on the display substrate; and
an extension direction of each of the first connecting terminals and an extension direction of each of the second connecting terminals are same.

Assignees

• Boe Technology Group Co Ltd
• Hefei Boe Optoelectronics Tech

Inventors

• Cai Liwen
• Tang Xianzhen
• Zhang Dingwei
• Chen Liang
• Guo ben
• Xu Lei
• Fang Fei

Classifications

• H05K1/117

  Pads along the edge of rigid circuit boards, e.g. for pluggable connectors · CPC title

• H05K1/118

  specially for flexible printed circuits, e.g. using folded portions · CPC title

• H05K3/323

  by applying an anisotropic conductive adhesive layer over an array of pads · CPC title

• H05K2201/0108

  Transparent · CPC title

• H05K1/147

  at least one of the printed circuits being bent or folded, e.g. by using a flexible printed circuit (H05K1/148 takes precedence) · CPC title