LIQUID CRYSTAL DISPLAY MOTHER PANEL AND METHOD FOR MANUFACTURING THE SAME

• US 20110058137A1
• Filed: 09/03/2010
• Published: 03/10/2011
• Est. Priority Date: 09/07/2009
• Status: Active Grant

• Current Assignee: Beijing BOE Optoelectronics Technology Co Ltd. (BOE Technology Group Co., Ltd.)
• Original Assignee: Beijing BOE Optoelectronics Technology Co Ltd. (BOE Technology Group Co., Ltd.)
• Inventors: HUANG, Dongsheng, ZHAO, Kai
• Granted Patent: US 8,755,018 B2
• Time in Patent Office: Days
• US Class Current: 349/156
• CPC Class Codes: G02F 1/1339 Gaskets; Spacers; Sealing of cells
• CPC Class Codes: G02F 1/13396 Spacers having different sizes

Abstract

An embodiment of the present invention provides a liquid crystal display mother panel comprising: a color filter substrate; an array substrate opposite to the color filter substrate; and a primary sealant element, a secondary sealant element, primary spacers and secondary spacers disposed between the color filter substrate and the array substrate. The secondary spacers have a height different from that of the primary spacers, and the primary spacers and the secondary spacers maintain a same distance between the color filter substrate and the array substrate when they are against structural layers on the two substrates, respectively.

Claims

1. A liquid crystal display mother panel including at least one panel, the mother panel comprising:

a color filter substrate;

an array substrate opposite to the color filter substrate; and

a primary sealant element, a secondary sealant element, primary spacers and secondary spacers disposed between the color filter substrate and the array substrate,

wherein the primary sealant element is disposed along a periphery of the at least one panel, the primary spacers are disposed in a region surrounded by the primary sealant element, the secondary sealant element is disposed outside the at least one panel, and the secondary spacers are disposed between the primary sealant element and the secondary sealant element, and

wherein the secondary spacers have a height different from that of the primary spacers, and the primary spacers and the secondary spacers maintain a same distance between the color filter substrate and the array substrate when they are against structural layers on the two substrates, respectively.

2. The liquid crystal display mother panel of claim 1, wherein the secondary spacers are post spacers.

3. The liquid crystal display mother panel of claim 2, wherein the secondary spacers has a bottom area larger than that of the primary spacers.

4. The liquid crystal display mother panel of claim 2, wherein the secondary spacers are dispersed more densely than the primary spacers are.

5. The liquid crystal display mother panel of claim 1, wherein the secondary spacers are stripe-like wall spacers.

6. The liquid crystal display mother panel of claim 1, wherein the secondary spacers are formed on the color filter substrate or the array substrate.

7. A method for forming a liquid crystal display mother panel including at least one panel, the method comprising:

depositing a spacer material on a substrate and then performing an exposing process,

wherein a region corresponding to a secondary spacer is not exposed, a region corresponding to a primary spacer is half-exposed, and a remaining region is fully exposed, such that the primary spacer and the secondary spacer are formed on the substrate, the primary spacer has a height from that of the secondary spacer, the primary spacer is disposed inside the at least one panel, and the secondary spacer is disposed outside the at least one panel.

8. The method of claim 7, wherein the substrate is a color filter substrate or an array substrate.

9. The method of claim 7, wherein the region corresponding to the primary spacer is half-exposed with a slit-mask or a half-tone mask.

10. The method of claim 7, wherein the spacer material deposited on the substrate has a thickness of about 6-7 μ

m.

11. The method of claim 10, wherein the primary spacer has a height in a range of about 3-4 μ

m after the exposing process.

12. The method of claim 10, wherein the spacer material comprises photoresist.