LIQUID CRYSTAL PANEL, LIQUID CRYSTAL DISPLAY AND METHOD FOR MANUFACTURING THE SAME

• US 20140063365A1
• Filed: 12/13/2012
• Published: 03/06/2014
• Est. Priority Date: 04/01/2012
• Status: Active Grant

• Current Assignee: BOE Technology Group Co., Ltd., Chengdu BOE Optoelectronics Technology Company Limited (BOE Technology Group Co., Ltd.)
• Original Assignee: BOE Technology Group Co., Ltd., Chengdu BOE Optoelectronics Technology Company Limited (BOE Technology Group Co., Ltd.)
• Inventors: Li, Kun, Xuan, Minghua, Ko, Young Yik
• Granted Patent: US 9,405,143 B2
• Time in Patent Office: Days
• US Class Current: 349/12
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G02F 1/133394 Piezoelectric elements associated with the cells
• CPC Class Codes: G02F 1/13394 spacers regularly patterned on the cell subtrate, e.g. walls, pillars G02F1/133377 takes precedence
• CPC Class Codes: G02F 1/13398 Spacer materials; Spacer properties
• CPC Class Codes: G02F 1/136286 Wiring, e.g. gate line, drain line
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/04146 using pressure sensitive conductive elements delivering a boolean signal and located between crossing sensing lines, e.g. located between X and Y sensing line layers

Abstract

Disclosed are a liquid crystal panel, a liquid crystal display and a method for manufacturing the same. The liquid crystal panel comprises: a color filter substrate; an array substrate; a piezoelectric material spacer disposed between the color filter substrate and the array substrate; one signal line disposed between the color filter substrate and the piezoelectric material spacer; and another signal line disposed between the piezoelectric material spacer and the array substrate, wherein the two signal lines respectively contact a color filter substrate side surface and an array substrate side surface of the piezoelectric material spacer, a projection of the signal line at the color filter substrate side onto the array substrate side surface of the piezoelectric material spacer intersects with the signal line at the array substrate side, and the two signal lines are insulated from each other, and it can realize a touch panel with integrated functions and self-applied power source while maintaining the thickness of the liquid crystal cell and which have such advantages as high transmittance, simple structure, low manufacturing costs, high precision and long service life.

Claims

1. A liquid crystal panel, comprising:

a color filter substrate;

an array substrate;

a piezoelectric material spacer disposed between the color filter substrate and the array substrate;

one signal line disposed between the color filter substrate and the piezoelectric material spacer; and

another signal line disposed between the piezoelectric material spacer and the array substrate,

wherein the two signal lines respectively contact a color filter substrate side surface and an array substrate side surface of the piezoelectric material spacer, a projection of the signal line at the color filter substrate side onto the array substrate side surface of the piezoelectric material spacer intersects with the signal line at the array substrate side, and the two signal lines are insulated from each other.

2. The liquid crystal panel according to claim 1, wherein an insulating layer is disposed between the signal line at the color filter substrate side and the array substrate and another insulating layer is disposed between the signal line at the array substrate side and the color filter substrate.

3. The liquid crystal panel according to claim 1, wherein the piezoelectric material for the piezoelectric material spacer is one of piezoelectric crystal, piezoelectric ceramic, piezoelectric polymer, and piezoelectric ceramic/polymer composite material.

4. The liquid crystal panel according to claim 1, wherein the piezoelectric material spacer is disposed between an area where a silicon island, a data signal line or a gate signal line of the array substrate is located and an area where a black matrix of the color filter substrate is located.

5. The liquid crystal panel according to claim 4, wherein the piezoelectric material spacer is disposed between an overlapping area of the data signal line and the gate signal line and the area where the black matrix of the color filter substrate is located.

6. The liquid crystal panel according to claim 4, wherein the piezoelectric material spacer is disposed below one black matrix of a plurality of pixel regions, each of the pixel regions including a plurality of sub pixels and black matrixes disposed between the sub pixels.

7. The liquid crystal panel according to claim 1, wherein a liquid crystal molecule alignment layer is disposed between the signal line at the array substrate side and the array substrate.

8. The liquid crystal panel according to claim 7, wherein the black matrix and color pixel layers on the color filter substrate are formed of conductive materials, and an insulating layer is disposed between the signal line at the color filter substrate side and the color filter substrate.

9. The liquid crystal panel according to claim 1, wherein a liquid crystal molecule alignment layer is disposed between the signal line at the color filter substrate side and the color filter substrate.

10. The liquid crystal panel according to claim 9, wherein an insulating layer is disposed between the signal line at the array substrate side and the array substrate.

11. A liquid crystal display, a body of which is provided with the liquid crystal panel according to claim 1 and a detection circuit, the detection circuit being connected to the two signal lines to detect whether an electric signal is generated from the two signal lines.

12. A method for manufacturing a liquid crystal panel, comprising:

forming a first signal line on a first substrate;

forming a piezoelectric material spacer on the first signal line, a first substrate side surface of the piezoelectric material contacting the first signal line;

forming a second signal line on a second substrate side surface of the piezoelectric material spacer, wherein the second substrate side surface of the piezoelectric material spacer contacts the second signal line, a projection of the first signal line onto the second substrate side surface of the piezoelectric material spacer intersects with the second signal line, and the first signal line and the second signal line are insulated from each other; and

assembling the first substrate and the second substrate together to form a cell, wherein the first substrate is one of a color filter substrate and an array substrate, and the second substrate is the other of the color filter substrate and the array substrate.

13. The method for manufacturing a liquid crystal panel according to claim 12, wherein forming the first signal line on the first substrate comprises:

forming an insulating layer on the first substrate; and

forming the first signal line on the insulating layer.

14. The method for manufacturing a liquid crystal panel according to claim 12, wherein forming the first signal line on the first substrate comprises:

depositing a first conductive layer on the first substrate, and

forming the first signal line by a patterning process; and

wherein forming the second signal line on the second substrate side surface of the piezoelectric material spacer comprises;

depositing a second conductive layer on the first substrate having been formed with a protrusion of the spacer; and

forming a second signal line by a patterning process at the protrusion of spacer.

15. The method for manufacturing a liquid crystal panel according to claim 14, wherein forming the piezoelectric material spacer on the first signal line comprises:

depositing an insulating layer on the first substrate having been formed with the first signal line;

forming a via hole by a patterning process in the area where the first signal line is located;

depositing a piezoelectric material to form a piezoelectric material layer; and

forming a protrusion of the piezoelectric material spacer by a patterning process in the position of the via hole.

16. The method for manufacturing a liquid crystal panel according to claim 14, wherein forming the piezoelectric material spacer on the first signal line comprises:

directly depositing a piezoelectric material on the first substrate having been formed with the first signal line, so as to form a piezoelectric material layer; and

forming a protrusion of the piezoelectric material spacer by a patterning process in the area where the first signal line is located,

wherein depositing the second conductive layer on the first substrate having been formed with a protrusion of the spacer comprises;

depositing an insulating layer on the first substrate formed with the protrusion of the spacer;

forming a via hole by a patterning process at the protrusion of the spacer; and

depositing the second conductive layer.

17. The method for manufacturing a liquid crystal panel according to claim 12, wherein, after forming the second signal line on the second substrate side surface of the piezoelectric material spacer and prior to assembling the first substrate and the second substrate together to form a cell, the method further comprises:

coating a liquid crystal molecule alignment layer on the first substrate formed with the second signal line.