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Optical assembly and the method to make the same

a technology of optical assembly and optical components, applied in the field of optical assembly, can solve the problems of poor light uniformity, poor adhesive force, unsatisfactory phenomena, etc., and achieve the effects of poor adhesive force, poor light uniformity, and poor flaw-masking

Active Publication Date: 2019-05-09
UBRIGHT OPTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention solves several problems in the adhesive process, such as poor light uniformity, poor flaw-masking, and poor adhesive force. Additionally, it effectively solves the problem of Moire pattern while also reducing the overall thickness of the optical films in the backlight module and improving heat resistance to prevent deformation. These issues are often caused by poor heat distribution in a single optical film.

Problems solved by technology

This adhesive method results in some undesired phenomena, such as poor light uniformity, poor flaw-masking, poor adhesive force and poor adhesive uniformity.

Method used

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  • Optical assembly and the method to make the same
  • Optical assembly and the method to make the same
  • Optical assembly and the method to make the same

Examples

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embodiment 1

[0035]Use the adhesive photo-curable material (e.g., UV-Type resin) as the material of the light diffusing layer 102M of the diffusing sheet 102. The first curing reaction proceeds in the light diffusing layer 102M embossed by the roll such that the light diffusing layer 102M has the second microstructures 112 with the top planar surface 112A having a width of 1-3 Use the photo-curable material (e.g., UV-Type resin) as the material of the adhesive layer 103 and coat the second surface 101B of the PET substrate 101S of the prism sheet 101 with the material of the adhesive layer 103. Then, the top planar surface 112A of the second microstructure 112 of the light diffusing layer 102M is bonded to the adhesive layer 103 on the second surface 101B of the PET substrate 101S of the prism sheet 101 by roll-embossing (After drying the solvent in the adhesive layer 103, control the thickness the dry film of the adhesive layer 103 to be 1.5˜2.0 μm to have adhesive effect between the top planar...

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Abstract

The present invention discloses an optical assembly used in the backlight module. The optical assembly comprises: a first optical film having a first surface; an adhesive layer having a second surface and a third surface opposite to the second surface, wherein the second surface of the adhesive layer is disposed on the first surface of the first optical film; and a diffusing sheet having a fourth surface comprising a plurality of first microstructures and a plurality of second microstructures, wherein each of the plurality of second microstructures extends along a first direction, wherein the maximum height of the plurality of second microstructures is greater than that of the plurality of first microstructures so as to bond the plurality of second microstructures to the third surface of the adhesive layer.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application claims the benefit of U.S. provisional patent application No. 62 / 581,054, filed on Nov. 3, 2017, which is hereby incorporated herein by reference.BACKGROUND OF THE INVENTION1. Field of the Invention[0002]The present invention relates to an optical assembly, and more particularly to an optical assembly combined by an adhesive.2. Description of Related Art[0003]The flat display panel, such as liquid crystal display (LCD), is widely used. The liquid crystal display (LCD) may require a backlight module which serves as a surface light source to provide light uniformly to the entire screen. The current backlight module comprises a light guide plate, a light source disposed near the lateral surface of the light guide plate and inside of a light source reflective mask, a reflection sheet disposed over the bottom surface of the light guide plate and a combination of the diffusing sheet(s), the prism sheet(s) and other optical films...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): F21V17/10F21V3/04
CPCF21V17/101F21V3/049G02B6/0053G02B6/0051G02F1/133606G02F2202/28G02B6/0065G02F1/133607
Inventor TYAN, YI-LONGHSIN, LUNG-PINYANG, CHING-ANJUAN, YU-MEILAI, CHIEN-CHIH
Owner UBRIGHT OPTRONICS CORP