Stack of Light Guide Plates and Method for Processing the Same

• US 20160054524A1
• Filed: 09/11/2014
• Published: 02/25/2016
• Est. Priority Date: 08/20/2014
• Status: Active Grant

• Current Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd. (TCL Technology Group Corp.)
• Original Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd. (TCL Technology Group Corp.)
• Inventors: HE, Hu
• Granted Patent: US 9,429,709 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G02B 6/002 by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces
• CPC Class Codes: G02B 6/0065 Manufacturing aspects; Material aspects
• CPC Class Codes: G02B 6/10 of the optical waveguide type G02B6/02, G02B6/24 take precedence; devices or arrangements for the control of light by electric, magnetic, electro-magnetic or acoustic means G02F1/00; transferring the modulation of modulated light G02F2/00; optical logic elements G02F3/00; optical analogue/digital converters G02F7/00
• CPC Class Codes: G02B 6/26 Optical coupling means G02B6/36, G02B6/42 take precedence

Abstract

A stack of light guide plates is proposed. Each light guide plate includes a light guide plate body and an incident side, thickness of the incident side is more than thickness of the light guide plate body, two light guide plates are reversely arranged and laminated when the two light guide plates are processed, and then a plurality of a pair of laminated light guide plates are stacked. The present embodiment provides a method for processing light guide plates. Even though the thickness of the incident side or the wedged shape of the incident side changes, the method can be adopted. The stack of light guide plates remain neat and flat using the method. Because a batch of light guide plates are cut and polished using the method, the efficiency in processing light guide plates improves. In this way, utilization of the equipment improves as well.

Claims

1. A stack of light guide plates, where each light guide plate comprises a light guide plate body and an incident side, thickness T1 of the incident side is more than thickness T2 of the light guide plate body, two light guide plates are reversely arranged and laminated when the two light guide plates are processed, and then a plurality of a pair of laminated light guide plates are stacked.

2. The stack of light guide plates as claimed in claim 1, wherein the light guide plate comprises at least an incident surface, a light emitting surface, and a bottom, the light emitting surfaces of the two light guide plates are disposed face to face, and a terminal of the incident side of the one light guide plate is not taller than a plane where the bottom of the other light guide plate is situated.

3. The stack of light guide plates as claimed in claim 2, wherein the incident side of the light guide plate is wedge-shaped and comprises a slope, and the slope is connected to the middle of the incident surface and the light emitting surface.

4. The stack of light guide plates as claimed in claim 3, wherein the middle of the slope of the incident surface and the incident surface comprises a second plane, and the second plate and the bottom are in parallel.

5. The stack of light guide plates as claimed in claim 1, wherein the thickness T1 of the incident side is less than and equal to double the thickness T2 of the light guide plate body, and the light emitting surfaces of the two light guide plates are attached to each other when the two light guide plates are laminated.

6. The stack of light guide plates as claimed in claim 2, wherein the thickness T1 of the incident side is less than and equal to double the thickness T2 of the light guide plate body, and the light emitting surfaces of the two light guide plates are attached to each other when the two light guide plates are laminated.

7. The stack of light guide plates as claimed in claim 3, wherein the thickness T1 of the incident side is less than and equal to double the thickness T2 of the light guide plate body, and the light emitting surfaces of the two light guide plates are attached to each other when the two light guide plates are laminated.

8. The stack of light guide plates as claimed in claim 4, wherein the thickness T1 of the incident side is less than and equal to double the thickness T2 of the light guide plate body, and the light emitting surfaces of the two light guide plates are attached to each other when the two light guide plates are laminated.

9. The stack of light guide plates as claimed in claim 1, wherein the thickness T1 of the incident side is more than double the thickness T2 of the light guide plate body, a top of the incident side of the one light guide plate over the light emitting surface of the one light guide plate itself is connected to the light emitting surface of the other light guide plate, the middle between the laminated light guide plate bodies comprises a gap, and the gap comprises a base plate.

10. The stack of light guide plates as claimed in claim 2, wherein the thickness T1 of the incident side is more than double the thickness T2 of the light guide plate body, a top of the incident side of the one light guide plate over the light emitting surface of the one light guide plate itself is connected to the light emitting surface of the other light guide plate, the middle between the laminated light guide plate bodies comprises a gap, and the gap comprises a base plate.

11. The stack of light guide plates as claimed in claim 3, wherein the thickness T1 of the incident side is more than double the thickness T2 of the light guide plate body, a top of the incident side of the one light guide plate over the light emitting surface of the one light guide plate itself is connected to the light emitting surface of the other light guide plate, the middle between the laminated light guide plate bodies comprises a gap, and the gap comprises a base plate.

12. The stack of light guide plates as claimed in claim 4, wherein the thickness T1 of the incident side is more than double the thickness T2 of the light guide plate body, a top of the incident side of the one light guide plate over the light emitting surface of the one light guide plate itself is connected to the light emitting surface of the other light guide plate, the middle between the laminated light guide plate bodies comprises a gap, and the gap comprises a base plate.

13. The stack of light guide plates as claimed in claim 9, wherein the thickness T3 of the base plate is no less than a sum of the thickness T1 of the incident side and the thickness T2 of the light guide plate body.

14. The stack of light guide plates as claimed in claim 10, wherein the thickness T3 of the base plate is no less than a sum of the thickness T1 of the incident side and the thickness T2 of the light guide plate body.

15. The stack of light guide plates as claimed in claim 11, wherein the thickness T3 of the base plate is no less than a sum of the thickness T1 of the incident side and the thickness T2 of the light guide plate body.

16. The stack of light guide plates as claimed in claim 12, wherein the thickness T3 of the base plate is no less than a sum of the thickness T1 of the incident side and the thickness T2 of the light guide plate body.

17. The stack of light guide plates as claimed in claim 2, wherein the incident side is a slope, the slopes of every two light guide plates are connected and laminated, and a baffle plate is disposed on one side of a plurality of a pair of laminated light guide plates.

18. A method for processing a light guide plate to be cut and polished, wherein a stack of neatly laminated light guide plates are cut and polished.