Method for manufacturing color filter, color filter, and display device

• US 9,360,713 B2
• Filed: 11/12/2012
• Issued: 06/07/2016
• Est. Priority Date: 04/01/2012
• Status: Active Grant

• Current Assignee: BOE Technology Group Co., Ltd.
• Original Assignee: BOE Technology Group Co., Ltd.
• Inventors: Lu, Jinbo, Zhang, Zhuo
• Primary Examiner(s): Nguyen, Dung
• Application Number:
  US14/126,964
• Publication Number:
  US 20140118670A1
• Time in Patent Office: 1,303 Days
• Field of Search: 349106-109, 349/110, 349155-156, 349/187
• US Class Current: 1/1
• CPC Class Codes: G02B 5/201 in the form of arrays
• CPC Class Codes: G02B 5/22 Absorbing filters G02B5/201 - G02B5/208 take precedence
• CPC Class Codes: G02F 1/133512 Light shielding layers, e.g. black matrix G02F1/136209 takes precedence
• CPC Class Codes: G02F 1/133514 Colour filters
• CPC Class Codes: G02F 1/133516 Methods for their manufacture, e.g. printing, electro-deposition or photolithography
• 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 2203/01 transmissive

Abstract

A method for manufacturing a color filter, the color filter, and a display device. The method for manufacturing the color filter includes: forming multiple transparent columnar objects in a pixel area of a substrate; forming on the substrate having formed thereon the transparent columnar object a black array that encircles to form the pixel area; and forming pixel resin layers in the pixel area, where the transparent columnar objects protrude outwards from the pixel resin layers to serve as columnar spacers. This allows for accurate control of the aperture size and aperture area of pores in the pixel area of the color filter.

Claims

1. A color filter, comprising:

a substrate;

a plurality of transparent columns formed within in pixel regions of the substrate;

a black matrix formed on the substrate, wherein the black matrix defines the pixel regions; and

pixel resin layers formed in the pixel regions, wherein the transparent columns project from the pixel resin layers and serve as post spacers, and end surfaces of the transparent columns and the pixel resin layers are in a same surface of the substrate.

2. The color filter according to claim 1, further comprising:

a transparent conductive layer formed on the black matrix and the pixel resin layers.

3. The color filter according to claim 2, further comprising:

a transparent protective layer formed between the black matrix and pixel resin layers, and the transparent conductive layer.

4. The color filter according to claim 3, wherein each of the transparent columns has a height of 6-15 μ

m.

5. The color filter according to claim 2, wherein each of the transparent columns has a height of 6-15 μ

m.

6. The color filter according to claim 1, wherein each of the transparent columns has a height of 6-15 μ

m.

7. A liquid crystal display panel, comprising:

a color filter according to claim 1.

8. A display device, comprising:

a liquid crystal display panel according to claim 7.