Method for manufacturing a liquid crystal panel

• US 9,268,161 B2
• Filed: 12/12/2013
• Issued: 02/23/2016
• Est. Priority Date: 12/13/2012
• Status: Active Grant

• Current Assignee: BOE Technology Group Co., Ltd., Chengdu BOE Optoelectronics Technology Company Limited (BOE Technology Group Co., Ltd.)
• Original Assignee: BOE Technology Group Co., Ltd., Chengdu BOE Optoelectronics Technology Company Limited (BOE Technology Group Co., Ltd.)
• Inventors: Mo, Zailong, Shi, Tianlei
• Primary Examiner(s): Chan, Sing P
• Application Number:
  US14/104,798
• Publication Number:
  US 20140170924A1
• Time in Patent Office: 803 Days
• Field of Search: 156/249, 156/278, 156/307.1, 156/307.3, 156/701, 156/716, 156/717
• US Class Current: 1/1
• CPC Class Codes: G02F 1/1303 Apparatus specially adapted to the manufacture of LCDs
• CPC Class Codes: G02F 1/1333 Constructional arrangements; Manufacturing methodsG02F1/135, G02F1/136 take precedence
• CPC Class Codes: G02F 1/133302 Rigid substrates, e.g. inorganic substrates
• CPC Class Codes: G02F 2202/28 Adhesive materials or arrangements
• CPC Class Codes: G02F 2203/68 Green display, e.g. recycling, reduction of harmful substances
• CPC Class Codes: H01L 27/1266 the substrate on which the devices are formed not being the final device substrate, e.g. using a temporary substrate

Abstract

A method for manufacturing a liquid crystal panel is provided. The method comprises bonding a first substrate with a second substrate so as to form a mother substrate; forming an array pattern on a first substrate side of the mother substrate, the first substrate side being away from the second substrate; separating the first substrate and the second substrate of the mother substrate; and bonding the separated first substrate and the second substrate so that the array pattern is located between the first and second substrates.

Claims

1. A method for manufacturing a liquid crystal panel, comprising the followings steps:

bonding a first substrate with a second substrate so as to form a mother substrate;

forming an array pattern on a first substrate side of the mother substrate, the first substrate side being away from the second substrate;

separating the first substrate and the second substrate of the mother substrate; and

bonding the separated first substrate and the second substrate so that the array pattern is located between the first and second substrates.

2. The method for manufacturing the liquid crystal panel according to claim 1, wherein, after the step of forming the array pattern on the first substrate side of the mother substrate and before the step of separating the first substrate and the second substrate of the mother substrate, the method further comprises:

forming a color filter pattern on the first substrate side or a second substrate side of the mother substrate, the second substrate side being away from the first substrate;

bonding the separated first and second substrates in such a way that the color filter pattern and the array pattern are located between the first and second substrates.

3. The method for manufacturing the liquid crystal panel according to claim 2, wherein, after the step of forming the array pattern on the first substrate side of the mother substrate, the mother substrate is flipped so as to form the color filter pattern on the second substrate side of the mother substrate.

4. The method for manufacturing the liquid crystal panel according to claim 3, wherein the mother substrate is flipped in an overall support way.

5. The method for manufacturing the liquid crystal panel according to claim 4, wherein the mother substrate is supported at a non-effective display portion thereof.

6. The method for manufacturing the liquid crystal panel according to claim 2, wherein the color filter pattern on the second substrate side of the mother substrate is cleaned in a non-contact way.

7. The method for manufacturing the liquid crystal panel according to claim 1, wherein, the first and second substrates are bonded together with an adhesive applied on the periphery of any one of the first and second substrates.

8. The method for manufacturing the liquid crystal panel according to claim 7, wherein the adhesive does not contain any fiber-particle.

9. The method for manufacturing the liquid crystal panel according to claim 1, wherein, before the step of separating the first and second substrates of the mother substrate, the method further comprises:

forming a first alignment layer and a second alignment layer on the first substrate side and the second substrate side of the mother substrate respectively; and

rubbing both the first and the second alignment layers.

10. The method for manufacturing the liquid crystal panel according to claim 9, wherein, the step of bonding the separated first substrate and the second substrate comprises:

applying a seal onto the second substrate side of the mother substrate formed with the rubbed second alignment film;

flipping the mother substrate; and

dropping liquid crystal onto the first substrate side of the mother substrate formed with the rubbed first alignment film.

11. The method for manufacturing the liquid crystal panel according to claim 1, wherein after the step of separating the first substrate and the second substrate of the mother substrate, the method further comprises transferring the separated first substrate and/or the second substrate in an overall support way.

12. The method for manufacturing the liquid crystal panel according to claim 11, wherein the separated first substrate and/or the second substrate are/is supported at a non-effective display portion thereof.

13. The method for manufacturing the liquid crystal panel according to claim 1, wherein the first and second substrates of the mother substrate are separated by an adsorption separation process.

14. The method for manufacturing the liquid crystal panel according to claim 1, wherein the liquid crystal panel has a thickness of no more than 0.5 mm.

15. The method for manufacturing the liquid crystal panel according to claim 1, wherein at least one of the first and second substrates has a thickness of no more than 0.25 mm.