Liquid crystal display panel comprising conductive structure and liquid crystal display device

• US 9,069,195 B2
• Filed: 10/10/2012
• Issued: 06/30/2015
• Est. Priority Date: 11/11/2011
• Status: Active Grant

• Current Assignee: BOE Technology Group Co., Ltd.
• Original Assignee: BOE Technology Group Co., Ltd.
• Inventors: Zhang, Peilin, You, Jaegeon
• Primary Examiner(s): NGO, HUYEN LE
• Application Number:
  US13/704,794
• Publication Number:
  US 20140085554A1
• Time in Patent Office: 993 Days
• Field of Search: 349/33, 349/149, 349/153, 349/156
• US Class Current: 1/1
• CPC Class Codes: G02F 1/13306 Circuit arrangements or driving methods for the control of single liquid crystal cells G02F1/132, G02F1/133382 take precedence
• CPC Class Codes: G02F 1/136272 Auxiliary lines
• CPC Class Codes: G02F 1/136286 Wiring, e.g. gate line, drain line
• CPC Class Codes: G09G 2300/0426 Layout of electrodes and connections
• CPC Class Codes: G09G 2330/02 Details of power systems and of start or stop of display operation
• CPC Class Codes: G09G 3/3614 Control of polarity reversal in general
• CPC Class Codes: G09G 3/3696 Generation of voltages supplied to electrode drivers

Abstract

According to embodiments of the invention, there are disclosed a liquid crystal display panel and a liquid crystal display device. The liquid crystal display panel comprises: a liquid crystal layer; a conductive structure, surrounding the liquid crystal layer; and a driving circuit, connected to the conductive structure. The driving circuit comprises: a power supply circuit and a switch circuit. The power supply is connected to the conductive structure and provides the conductive structure with a DC voltage. One terminal of the switch circuit is connected to the conductive structure and the other terminal thereof is grounded.

Claims

1. A liquid crystal display panel, comprising:

a liquid crystal layer;

a conductive structure, surrounding the liquid crystal layer; and

a driving circuit, connected to the conductive structure,

wherein the driving circuit comprises;

a power supply circuit, connected to the conductive structure and providing the conductive structure with a DC voltage;

a switch circuit, one terminal thereof connected to the conductive structure and the other terminal thereof being grounded.

2. The liquid crystal display panel according to claim 1, wherein the power supply circuit provides the conductive structure with the DC voltage periodically alternating between a positive polarity and a negative polarity.

3. The liquid crystal display panel according to claim 1, wherein the switch circuit comprises:

a first diode, a positive terminal thereof is connected to the conductive structure and a negative terminal thereof is grounded; and

a second diode, a negative terminal thereof is connected to the conductive structure and a positive terminal thereof is grounded.

4. The liquid crystal display panel according to claim 1, wherein the liquid crystal display panel further comprises an array substrate and a counter substrate;

and

wherein the conductive structure is disposed on the array substrate, on the counter substrate, or on both of the array substrate and the counter substrate.

5. The liquid crystal display panel according to claim 4, wherein the conductive structure is disposed on the array substrate.

6. The liquid crystal display panel according to claim 1, wherein the conductive structure is formed as a conductive sealant.

7. The liquid crystal display panel according to claim 6, wherein the conductive sealant is doped with conductive particles.

8. The liquid crystal display panel according to claim 7, wherein the conductive particles comprise at least one of Au balls and carbon fibers.

9. The liquid crystal display panel according to claim 6, wherein the conductive sealant is entirely formed of a conductive material, so that it has conductivity.

10. The liquid crystal display panel according to claim 1, wherein the liquid crystal display panel comprises a display region and a peripheral region outside the display region;

and

wherein the conductive structure and/or the driving circuit are/is disposed in the peripheral region.

11. The liquid crystal display panel according to claim 1, wherein the conductive structure is formed as a closed structure.

12. The liquid crystal display panel according to claim 1, wherein the conductive structure is formed as a non-closed structure so as to comprise plural disconnected portions, and each of the portions is connected to the power supply circuit and the switch circuit.

13. The liquid crystal display panel according to claim 1, wherein the liquid crystal display panel is a horizontal electric field mode liquid crystal display panel.

14. A liquid crystal display device, comprising the liquid crystal display panel according to claim 1.