IP Library Granted Patent US 7,605,888
Granted Patent B2
US 7,605,888 · App. 12/355,803 · Granted Oct 20, 2009

Liquid crystal display panel and method of fabricating the same

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Quick Facts
Patent No.
US 7,605,888
App. No.
12/355,803
Granted
Oct 20, 2009
Kind
B2
Abstract

A liquid crystal display panel having a display area comprises a first substrate, a second substrate, a sealant, a liquid crystal layer, and a light-shielding layer. The sealant is disposed between the first substrate and the second substrate. The liquid crystal layer is disposed in a space defined by the first substrate, the second substrate and the sealant. The light shielding layer is disposed on a first outer surface of the first substrate or a second outer surface of the second substrate, wherein the light shielding layer and the display area are not overlapped. In addition, the liquid crystal display panel further comprises a protection layer. Since the protection layer encapsulates the light-shielding layer, out-diffusion of dye within the light-shielding layer is effectively prevented.

Claims (33)

1. A liquid crystal display panel having a display area, comprising:

a first substrate having a first inner surface and a first outer surface;

a second substrate having a second inner surface and a second outer surface, wherein the second substrate is disposed above the first substrate;

a sealant, disposed between the first substrate and the second substrate;

a light-shielding layer, disposed on the first outer surface of the first substrate, wherein the light-shielding layer and the display area are not overlapped;

a first polarizer, disposed on the first outer surface;

a second polarizer, disposed on the second outer surface; and

a protection layer, disposed between the second polarizer and the light-shielding layer, wherein the light-shielding layer is encapsulated by the protection layer.

2. The liquid crystal display panel of claim 1 , wherein a material of the light-shielding layer comprises ink.

3. The liquid crystal display panel of claim 2 , wherein the ink comprises black ink, deep-colored ink.

4. The liquid crystal display panel of claim 1 , wherein an optical density of the light-shielding layer is 2.0 or higher than 2.0.

5. The liquid crystal display panel of claim 1 , wherein the light-shielding layer is disposed on a peripheral area outside the display area.

6. The liquid crystal display panel of claim 1 , further comprising a black matrix layer disposed on the first inner surface of the first substrate or the second inner surface of the second substrate.

7. The liquid crystal display panel of claim 6 , wherein the light-shielding layer and the black matrix layer are partially overlapped.

8. The liquid crystal display panel of claim 7 , wherein the light-shielding layer and the sealant are partially overlapped.

9. The liquid crystal display panel of claim 1 , wherein the protection layer comprises pigment, resin or the combination thereof.

10. The liquid crystal display panel of claim 1 , wherein the first substrate comprises a thin film transistor array substrate and the second substrate comprises a color filter substrate.

11. The liquid crystal display panel of claim 1 , wherein the first substrate comprises a color filter on thin film transistor array substrate (COA substrate), and the second substrate comprises an opposite substrate having a common electrode.

12. A method of fabricating a liquid crystal display panel having a display area, comprising:

providing a first substrate having a first inner surface and a first outer surface;

providing a second substrate having a second inner surface and a second outer surface;

forming a sealant between the first inner surface of the first substrate and the second inner surface of the second substrate;

filling a liquid crystal layer in a space defined by the first inner surface of the first substrate, the second inner surface of the second substrate and the sealant;

forming a light-shielding layer on the first outer surface of the first substrate;

forming a protection layer to encapsulate the light-shielding layer;

attaching a first polarizer on the first outer surface; and

attaching a second polarizer on the second outer surface, such that the protection layer is disposed between the second polarizer and the light-shielding layer.

13. The method of fabricating a liquid crystal display panel of claim 12 , wherein a material of the light-shielding layer comprises ink.

14. The method of fabricating a liquid crystal display panel of claim 13 , wherein the ink comprises black ink, deep-colored ink.

15. The method of fabricating a liquid crystal display panel of claim 12 , wherein the light-shielding layer is formed using an ink jet printing method, a screen printing method or a gravure printing method.

16. The method of fabricating a liquid crystal display panel of claim 12 , wherein an optical density of the light-shielding layer is 2.0 or higher than 2.0.

17. The method of fabricating a liquid crystal display panel of claim 12 , wherein the light-shielding layer is disposed on a peripheral area outside the display area.

18. The method of fabricating a liquid crystal display panel of claim 12 , further comprising a step of forming a black matrix layer on the first inner surface of the first substrate or the second inner surface of the second substrate.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 14, 2011
From: QSPEED SEMICONDUCTOR, INC
To: POWER INTEGRATIONS, INC.
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