LIQUID CRYSTAL DISPLAY PANEL, LIQUID CRYSTAL DISPLAY DEVICE HAVING THE SAME, AND METHOD OF MANUFACTURING THE SAME

• US 20100177273A1
• Filed: 03/25/2010
• Published: 07/15/2010
• Est. Priority Date: 10/26/2007
• Status: Active Grant

• Current Assignee: Iris Optronics Inc.
• Original Assignee: Fujitsu Limited
• Inventors: Matsunuma, Shigeo
• Granted Patent: US 8,279,392 B2
• Time in Patent Office: Days
• US Class Current: 349/149
• CPC Class Codes: G02F 1/1345 Conductors connecting electrodes to cell terminals

Abstract

The invention relates to a liquid crystal display panel formed by enclosing a liquid crystal between a pair of substrates, a liquid crystal display device having the same, and a method of manufacturing the same. The liquid crystal display panel can be easily connected to a circuit board. The liquid crystal display panel includes a scan electrode substrate having a plurality of scan electrodes formed like strips extending in parallel, a data electrode substrate having a plurality of data electrodes formed like strips extending in parallel, and a plurality of connection terminals formed at one edge of the scan electrode substrate to provide electrical connection with the data electrodes.

Claims

1. A liquid crystal display panel, comprising:

a first substrate including a first electrode and a second substrate including a second electrode formed opposite to each other to sandwich a liquid crystal layer, wherein

a terminal for electrically connecting the first electrode and the second electrode is formed on either the second substrate or the first substrate.

2. The liquid crystal display panel according to claim 1, wherein either of the first substrate and the second substrate having the terminal formed thereon has a size greater than a size of the other substrate.

3. The liquid crystal display panel according to claim 1, further comprising a conductive connecting portion formed between the first and second substrates to connect either the first electrode or the second electrode to the terminal.

4. A liquid crystal display device comprising:

a liquid crystal display panel provided on a circuit board, the liquid crystal display panel having a first substrate including a first electrode and a second substrate including a second electrode formed opposite to each other to sandwich a liquid crystal layer; and

a terminal formed on either the second substrate or the first substrate to connect the first electrode and the second electrode electrically, wherein

the terminal and the circuit board are electrically connected to each other.

5. The liquid crystal display device according to claim 4, wherein the terminal and the circuit board are connected using wire bonding.

6. The liquid crystal display device according to claim 4, wherein either of the first substrate and the second substrate having the terminal formed thereon has a size greater than a size of the other substrate.

7. The liquid crystal display device according to claim 4, further comprising a conductive connecting portion formed between the first and second substrates to connect either the first electrode or the second electrode to the terminal.

8. A liquid crystal display device comprising:

a plurality of liquid crystal display panels stacked one over another and disposed on a circuit board, the liquid crystal display panels having a first substrate including a first electrode and a second substrate including a second electrode formed opposite to each other to sandwich a liquid crystal layer; and

a terminal formed on either the second substrate or the first substrate of each liquid crystal display panel to connect the first electrode and the second electrode electrically, wherein

the terminal of each liquid crystal display panel and the circuit board are electrically connected to each other.

9. The liquid crystal display device according to claim 8, wherein the terminal and the circuit board are connected using wire bonding.

10. The liquid crystal display device according to claim 8, wherein either of the first substrate and the second substrate having the terminal formed thereon has a size greater than a size of the other substrate.

11. A method of manufacturing a liquid crystal display device, comprising the steps of:

forming a first electrode and a terminal electrically isolated from the first electrode on a first substrate and forming a second electrode on a second substrate;

electrically connecting the second electrode and the terminal with the first electrode and the second electrode disposed to face each other; and

electrically connecting the terminal to a circuit board.

12. The method according to claim 11, wherein the terminal and the second electrode are electrically connected by a bonding material at an end of the second electrode.

13. The method according to claim 12, wherein the bonding material is a soldering material.

14. The method according to claim 13, wherein the soldering material includes any of Sn, Ag, and Bi.

15. The method according to claim 11, wherein the terminal and the circuit board is connected using wire bonding.

16. The method according to claim 11, wherein the first substrate having the terminal formed thereon is formed greater than the second substrate.

17. A method of manufacturing a liquid crystal display device, comprising the steps of:

forming a first electrode and a terminal electrically isolated from the first electrode on a first substrate and forming a second electrode on a second substrate;

combining the first substrate and the second substrate such that the first electrode and the second electrode face each other and electrically connecting the second electrode and the terminal to fabricate a liquid crystal display panel; and

stacking a plurality of the liquid crystal display panels one over another and disposing them on a circuit board and electrically connecting the terminal of each of the plurality of liquid crystal display panels to the circuit board.

18. The method according to claim 17, wherein the terminal and the second electrode are electrically connected by a bonding material at an end of the second electrode.

19. The method according to claim 17, wherein the terminal and the circuit board is connected using wire bonding.

20. The method according to claim 17, wherein the first substrate having the terminal formed thereon is formed greater than the second substrate.