# US 2017/0285249 A1 · Screen printing stencil, light guide plate, display device , and method for manufacturing light guide plate

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- Number: US 2017/0285249 A1
- Document ID: US20170285249A1
- Status: Published application
- Kind: A1
- Application number: 15/242,481
- Filed: 2016-08-19
- Published: 2017-10-05
- Earliest claimed: 2016-03-30
- Assignees: Le Holdings (Beijing) Co., Ltd.; Le Shi Zhi Xin Electronic Technology (Tian Jin) Limited
- Applicants: Le Holdings(Beijing)Co., Ltd.; Le Shi Zhi Xin Electronic Technology (Tian Jin) Limited
- Inventors: Qiaowei Chong
- Web page: https://patentgrep.com/patent/US20170285249A1

## CPC

- B41F 15/36: flat
- G02B 6/0065: {Manufacturing aspects; Material aspects}
- B05D 1/32: using means for protecting parts of a surface not to be coated, e.g. using stencils, resists
- B41F 15/0881: {for printing on polyhedral articles}
- B41F 15/34: Screens, Frames; Holders therefor
- G02B 6/0043: {provided on the surface of the light guide}
- B41F: PRINTING MACHINES OR PRESSES (manifolding devices or office printing machines B41L)
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- B05D: PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL (conveying articles or workpieces through baths of liquid B65G, e.g. B65G49/02)

## Abstract

Disclosed are a screen printing stencil, a light guide plate and a display device. The screen printing stencil includes a pattern printing section arranged corresponding to a light guide plate to be printed, and at least one positioning mark hole arranged on the periphery of the pattern printing section. The light guide plate is manufactured using the screen printing stencil according to the embodiment of the invention by firstly aligning in position the pattern printing section of the screen printing stencil with the light guide plate to be printed, using the at least one positioning mark hole, and then printing on the light guide plate to be printed. A corresponding pattern of positioning marks is printed on the light guide plate in addition to the corresponding pattern. As compared with the prior art, the precision of aligning in position the screen printing stencil with the light guide plate to be printed can be improved to thereby improve the displaying quality of the display product.

## Claims

### Claim 1

A screen printing stencil, comprising a pattern printing section arranged corresponding to a light guide plate to be printed, and at least one positioning mark hole arranged on the periphery of the pattern printing section.

### Claim 2 (depends on 1)

The screen printing stencil according to claim 1, wherein there are four positioning mark holes positioned respectively on four corners of the pattern printing section.

### Claim 3 (depends on 1)

The screen printing stencil according to claim 1, wherein there is a distance from 0.07 to 0.1 mm between the positioning mark hole and the edge of the pattern printing section.

### Claim 4 (depends on 1)

The screen printing stencil according to claim 1, wherein the positioning mark hole is a rectangular positioning mark hole, an L-shaped positioning mark hole, or a right-angled triangular positioning mark hole.

### Claim 5 (depends on 1)

A light guide plate, manufactured using the screen printing stencil according to claim 1.

### Claim 6 (depends on 5)

A display device, comprising the light guide plate according to claim 5.

### Claim 7 (depends on 1)

A method for manufacturing a light guide plate, the manufacturing method using the screen printing stencil according to claim 1, wherein the manufacturing method comprises:
aligning in position the pattern printing section of the screen printing stencil with the light guide plate to be printed, using the at least one positioning mark hole; and
printing on the light guide plate to be printed, using the aligned screen printing stencil.