LIQUID CRYSTAL DISPLAY PANEL AND MANUFACTURING METHOD THEREOF

• US 20200133082A1
• Filed: 01/10/2018
• Published: 04/30/2020
• Est. Priority Date: 09/06/2017
• Status: Abandoned Application

• Current Assignee: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd. (TCL Technology Group Corp.)
• Original Assignee: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd. (TCL Technology Group Corp.)
• Inventors: SHAO, Yuan, TANG, Min, CHEN, Hsiao Hsien
• Application Number:
  US15/749,488
• Publication Number:
  US 20200133082A1
• Time in Patent Office: Days
• CPC Class Codes: G02F 1/133357 Planarisation layers
• CPC Class Codes: G02F 1/133528 Polarisers
• CPC Class Codes: G02F 1/133562 on the viewer side
• CPC Class Codes: G02F 1/136209 Light shielding layers, e.g. black matrix, incorporated in the active matrix substrate, e.g. structurally associated with the switching element
• CPC Class Codes: G02F 1/1368 in which the switching element is a three-electrode device G02F1/136277 takes precedence

Abstract

A liquid crystal display panel comprising an array substrate, a color filter substrate, a liquid crystal layer interposed between the array substrate and the color filter substrate, and a light shielding layer is provided. The array substrate is located at an illuminating side of the liquid crystal display panel, and has metal electrode lines disposed on an interior surface thereof. The light shielding layer is located on an exterior surface of the array substrate. A projection of a pattern of the light shielding layer on the array substrate at least covers a portion of the metal electrode lines. A manufacturing method of the liquid crystal display panel is also provided. The present invention has the side with the array substrate as the illuminating side, and places the light shielding layer on the exterior surface of the array substrate to reduce reflection of the metal electrode lines.

Claims

1. A liquid crystal display panel, comprising an array substrate, a color filter substrate, a liquid crystal layer interposed between the array substrate and the color filter substrate, and a light shielding layer, wherein the array substrate is located at an illuminating side of the liquid crystal display panel, the array substrate has metal electrode lines disposed on an interior surface thereof, the light shielding layer is located on an exterior surface of the array substrate, and a projection of a pattern of the light shielding layer on the array substrate at least covers a portion of the metal electrode lines.

2. The liquid crystal display panel of claim 1, wherein the light shielding layer is a black ink layer.

3. The liquid crystal display panel of claim 2, wherein the light shielding layer is formed on the array substrate by using a lithographic process.

4. The liquid crystal display panel of claim 1, wherein the projection of the pattern of the light shielding layer on the array substrate fully covers the metal electrode lines.

5. The liquid crystal display panel of claim 1, wherein the light shielding layer is a black matrix, and the projection of the light shielding layer on the array substrate surrounds each pixel.

6. The liquid crystal display panel of claim 4, wherein a line width of the light shielding layer is greater than a line width of the corresponding metal electrode line.

7. The liquid crystal display panel of claim 1, further comprising a planarization layer, located on the exterior surface of the array substrate and filling openings of the light shielding layer.

8. The liquid crystal display panel of claim 7, further comprising an upper polarizer, attached to an exterior surface of the planarization layer.

9. The liquid crystal display panel of claim 4, further comprising a transparent planarization layer, located on the exterior surface of the array substrate and filling openings of the light shielding layer.

10. The liquid crystal display panel of claim 9, further comprising an upper polarizer, attached to an exterior surface of the planarization layer.

11. The liquid crystal display panel of claim 5, further comprising a transparent planarization layer, located on the exterior surface of the array substrate and filling openings of the light shielding layer.

12. The liquid crystal display panel of claim 11, further comprising an upper polarizer, attached to an exterior surface of the planarization layer.

13. The liquid crystal display panel of claim 6, further comprising a transparent planarization layer, located on the exterior surface of the array substrate and filling openings of the light shielding layer.

14. The liquid crystal display panel of claim 13, further comprising an upper polarizer, attached to an exterior surface of the planarization layer.

15. A manufacturing method of a liquid crystal display panel, comprising the steps of:

providing a substrate;

depositing a light shielding material on a whole surface of the substrate;

patterning the light shielding material to form a light shielding layer;

forming metal electrode lines and thin film transistor (TFT) components on another surface of the substrate to compose the array substrate;

having the surface of the array substrate with the TFT components facing interior, and integrating the array substrate and a color filter (CF) substrate without a black matrix to form the liquid crystal display panel;

wherein a projection of a pattern of the light shielding layer on the substrate at least covers a portion of the metal electrode lines.

16. The manufacturing method of the liquid crystal display panel of claim 15, wherein after the formation of the light shielding layer, further comprises the step of:

forming a transparent planarization layer on the substrate and having the transparent planarization layer filling openings of the light shielding layer, and attaching an upper polarizer on a surface of the planarization layer.

17. The manufacturing method of the liquid crystal display panel of claim 15, wherein the projection of the pattern of the light shielding layer on the substrate fully covers the metal electrode lines.

18. The manufacturing method of the liquid crystal display panel of claim 16, wherein before the steps of forming the metal electrode lines or depositing the light shielding material on the substrate, further comprises the step of cleaning and drying the substrate.

19. The manufacturing method of the liquid crystal display panel of claim 16, wherein a thickness of the deposited light shielding material is 1˜

3 μ

m, and a line width of the light shielding layer is 15˜

25 μ

m.