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An optical alignment device and method

A photo-alignment and light source technology, applied in optics, nonlinear optics, instruments, etc., can solve the problems of reducing the utilization rate of light energy, difficulty in wire grid manufacturing, difficulty in optical processing and high cost.

Active Publication Date: 2021-04-09
SHANGHAI MICRO ELECTRONICS EQUIP (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] 1) The polarization of the polarized light is limited to the performance of the polarizing wire grid, and the manufacturing of the wire grid is difficult and costly;
[0008] 2) The method of adding a grating to the light source to generate polarized light reduces the utilization rate of light energy;
[0009] 3) In the method of generating polarized light with a light source and a grating, a large amount of light energy is converted into heat energy near the grating, resulting in huge heat generation in this part;
[0011] At present, the size of the large-generation substrate (above 6G) is relatively wide, reaching more than 1 meter. To cover such a large field of view, two solutions are usually adopted: one is to use large-size lenses or cylindrical mirrors, but the optical processing is more difficult and costly. The second is to use multiple fields of view for stitching, which introduces corresponding stitching errors and difficulty in calibration

Method used

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  • An optical alignment device and method
  • An optical alignment device and method
  • An optical alignment device and method

Examples

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Embodiment 1

[0038] Such as image 3 As shown, the present invention provides a light alignment device, which includes a substrate 200 and at least one set of lighting units 100. Each set of lighting units 100 may include a laser light source or a white light source. This example uses a laser light source as an example to describe . It includes two light sources 101 arranged symmetrically with respect to the substrate 200 , namely a first sub-illumination unit and a second sub-illumination unit. The light sources of the first sub-illumination unit and / or the second sub-illumination unit may be laser light sources or white light sources. The two light sources 101 in each group of the lighting units 100 are simultaneously incident on the same area of ​​the substrate 200 , and the illumination area of ​​the light sources 101 in at least one group of the lighting units 100 covers the upper surface of the substrate 200 . Specifically, the light source 101 is arranged obliquely relative to the ...

Embodiment 2

[0044] Such as Figure 5 As shown, different from Embodiment 1, the lighting unit 100 in this embodiment is provided with two groups, namely the first lighting unit 100a and the second lighting unit 100b, the first lighting unit 100a and / or the second lighting unit The light source of the unit 100b may be a laser light source or a white light source, and the oblique incidence angles of the light beams of the first lighting unit 100a and the second lighting unit 100b are different. Specifically, the first lighting unit 100a is located on both sides of the second lighting unit 100b, that is, the two first light sources 101a in the first lighting unit 100a are separately arranged on both sides of the second lighting unit 100b, and the second lighting The two second light sources 101b in the unit 100b are located between the two first light sources 101a. In this embodiment, the illumination area of ​​the two second light sources 101b in the second lighting unit 100b is the center ...

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Abstract

The invention discloses a light alignment device and method. The device includes at least one group of lighting units, each group of lighting units includes two light sources symmetrically arranged relative to the substrate, and the two light sources in each group of lighting units are simultaneously incident on the In the same area of ​​the base plate, at least one set of illumination areas of the light sources in the lighting units covers the upper surface of the base plate. In the present invention, by setting at least one group of lighting units, each group of lighting units includes two light sources arranged symmetrically with respect to the substrate, so that desired alignment can be generated on a large-sized alignment film, and large-sized The light alignment of the alignment film, and directly realize the large-scale light alignment lighting, without the need for pattern splicing, thereby improving the light alignment performance and productivity.

Description

technical field [0001] The invention relates to the technical field of alignment treatment of liquid crystal panels, in particular to an optical alignment device and method. Background technique [0002] In recent years, for alignment treatment of alignment films of liquid crystal panels and alignment layers of viewing angle compensation films, photo-alignment techniques have been adopted in which alignment is performed by irradiating polarized light of a specific wavelength to the alignment film. [0003] Herein, the thin film provided with an alignment film or an alignment layer that is aligned by the above-mentioned light is collectively referred to as a photo-alignment film. The size of the photo-alignment film increases with the increase in the size of the liquid crystal panel, and the size of the polarized light irradiation device for irradiating polarized light to the photo-alignment film also increases. [0004] Among the above-mentioned photo-alignment films, for e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/1337
CPCG02F1/133788
Inventor 戴乐薇李玉龙张鹏黎
Owner SHANGHAI MICRO ELECTRONICS EQUIP (GRP) CO LTD