LIQUID CRYSTAL DISPLAY PANEL AND METHOD FOR PRODUCING THE SAME

• US 20110019139A1
• Filed: 09/15/2009
• Published: 01/27/2011
• Est. Priority Date: 07/24/2009
• Status: Active Grant

• Current Assignee: Infovision Optoelectronics Company Limited (Digital China Information Service Co., Ltd.)
• Original Assignee: Infovision Optoelectronics Company Limited (Digital China Information Service Co., Ltd.)
• Inventors: Chung, Te-Chen, Cui, Hongqing
• Granted Patent: US 8,339,550 B2
• Time in Patent Office: Days
• US Class Current: 349/138
• CPC Class Codes: G02F 1/133516 Methods for their manufacture, e.g. printing, electro-deposition or photolithography
• CPC Class Codes: G02F 1/133521 Interference filters
• CPC Class Codes: G02F 1/136222 Colour filters incorporated in the active matrix substrate

Abstract

Embodiments of the present invention provide a Liquid Crystal Display (LCD) panel, including an upper substrate and a lower substrate between which a liquid crystal layer is sealed. The lower substrate includes a plurality of sub-pixel regions arranged in regular patterns. The upper substrate includes Black Matrixes (BM) and an upper transparent conductive layer which are formed in sequence on the bottom surface of an upper transparent substrate. The lower substrate includes a first metal layer, a dielectric layer, a second metal layer, an organic layer, a first insulation layer, a third metal layer, a second insulation layer, a fourth metal layer, a passivation layer and a lower transparent conductive layer which are deposited in sequence on the upper surface of a lower transparent substrate. Embodiments of the present invention also provide a method for producing the LCD panel.

Claims

1. A Liquid Crystal Display (LCD) panel, comprising:

an upper substrate and a lower substrate, and a liquid crystal layer sealed between the upper substrate and the lower substrate;

wherein the lower substrate comprises a plurality of sub-pixel regions arranged in regular patterns, and

the upper substrate comprises Black Matrixes and an upper transparent conductive layer which are formed in sequence on a bottom surface of an upper transparent substrate;

the lower substrate further comprises a first metal layer, a dielectric layer, a second metal layer, an organic layer, a first insulation layer, a third metal layer, a second insulation layer, a fourth metal layer, a passivation layer and a lower transparent conductive layer which are deposited in sequence on an upper surface of a lower transparent substrate.

2. The LCD panel according to claim 1, wherein the sub-pixel regions comprise Red (R) sub-pixel regions, Green (G) sub-pixel regions and Blue (B) sub-pixel regions;

and

a ratio of depths of different parts of the dielectric layer which respectively correspond to the R sub-pixel regions, the G sub-pixel regions and the B sub-pixel regions is identical to the ratio of wavelengths of red light, green light and blue light.

3. The LCD panel according to claim 2, wherein the depths of the different parts of the dielectric layer which respectively correspond to the R sub-pixel region, the G sub-pixel region and the B sub-pixel region are

4. The LCD panel according to claim 1, wherein the dielectric layer is made from silicon dioxide (SiO₂).

5. The LCD panel according to claim 1, wherein the first metal layer or the second metal layer is made from any of germanium, molybdenum, nickel, niobium, platinum and tungsten.

6. The LCD panel according to claim 1, wherein the depth of the first metal layer or the second metal layer is about 10 to about 30 nanometers.

7. The LCD panel according to claim 1, wherein the organic layer has a flat upper surface.

8. A method for producing a Liquid Crystal Display (LCD) panel, comprising:

forming an upper substrate and a lower substrate, sealing a liquid crystal layer between the upper substrate and the lower substrate, wherein the lower substrate comprises a plurality of sub-pixel regions arranged in regular patterns;

wherein the forming the upper substrate comprises;

forming Black Matrixes on a bottom surface of an upper transparent substrate of the LCD panel; and

depositing an upper transparent conductive layer on the Black Matrixes and parts of the bottom surface of the upper transparent substrate;

wherein the forming the lower substrate comprises;

depositing a first metal layer, a dielectric layer, a second metal layer and an organic layer in sequence on an upper surface of a lower transparent substrate of the LCD panel;

depositing a first insulation layer and a third metal layer in sequence on a surface of the organic layer;

depositing a second insulation layer on a surface of the third metal layer;

depositing a fourth metal layer on a surface of the second insulation layer;

depositing a passivation layer on a surface of the fourth metal layer; and

depositing a lower transparent conductive layer on a surface of the passivation layer.

9. The method according to claim 8, wherein the sub-pixel regions comprise Red sub-pixel regions, Green sub-pixel regions and Blue sub-pixel regions;

and

wherein the depositing the dielectric layer comprises;

depositing the dielectric layer on the first metal layer, wherein the dielectric layer is

10. The method according to claim 9, wherein the layer of photo resist is exposed through a triple tone mask.

11. A method for forming an array substrate, comprising:

depositing a first metal layer, a dielectric layer, a second metal layer and an organic layer in sequence on an upper surface of a transparent substrate;

depositing a first insulation layer and a third metal layer in sequence on a surface of the organic layer;

depositing a second insulation layer on a surface of the third metal layer;

depositing a fourth metal layer on a surface of the second insulation layer;

depositing a passivation layer on a surface of the fourth metal layer; and

depositing a transparent conductive layer on a surface of the passivation layer.

12. The method according to claim 11, wherein depositing the first metal layer, the dielectric layer, the second metal layer and the organic layer in sequence on the upper surface of the transparent substrate comprises arranging a plurality of sub-pixel regions in regular patterns in the array substrate.

13. The method according to claim 12, wherein the sub-pixel regions comprise Red sub-pixel regions, Green sub-pixel regions and Blue sub-pixel regions;

and

wherein the forming the dielectric layer comprises;

depositing the dielectric layer on the first metal layer, wherein the dielectric layer is

14. The method according to claim 13, wherein the layer of photo resist is exposed through a triple tone mask.