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Projector LCD screen

A technology for LCD screens and projectors, applied in optics, instruments, nonlinear optics, etc., to achieve the effect of improving yield and reducing the effects of impurities such as spot dust

Inactive Publication Date: 2022-01-04
黄雅雯
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The LCD screen can effectively reduce the bad problems caused by impurities and foreign objects such as dust on the projector during the manufacturing process and the terminal use process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] Such as figure 1 As shown, the projector LCD screen includes a first polarizer 1, a first transparent medium 3, a liquid crystal panel 2, a second transparent medium 4 and a second polarizer 5 arranged in sequence, and the first transparent medium 3 and the second transparent medium 4 Both are attached to the liquid crystal panel 2 , the first polarizer 1 is attached to the first transparent medium 3 , and the second polarizer 5 is attached to the second transparent medium 4 .

Embodiment 2

[0074] Such as figure 2 As shown, the projector LCD screen includes a first polarizer 1, a first transparent medium 3, a liquid crystal panel 2, a second transparent medium 4 and a second polarizer 5 arranged in sequence, and the first transparent medium 3 and the second transparent medium 4 Both are attached to the liquid crystal panel 2 , there is a gap between the first polarizer 1 and the first transparent medium 3 , and the second polarizer 5 is attached to the second transparent medium 4 .

Embodiment 3

[0076] Such as image 3 As shown, the projector LCD screen includes a first polarizer 1, a first transparent medium 3, a liquid crystal panel 2, a second transparent medium 4 and a second polarizer 5 arranged in sequence, and the first transparent medium 3 and the second transparent medium 4 Both are attached to the liquid crystal panel 2 , there is a gap between the first polarizer 1 and the first transparent medium 3 , and there is a gap between the second polarizer 5 and the second transparent medium 4 .

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Abstract

The invention belongs to the technical field of projection equipment, and particularly relates to a projector LCD screen, which at least comprises a fixedly arranged liquid crystal panel, transparent media are fixedly arranged on one side or two sides of the liquid crystal panel, each transparent medium is attached to the liquid crystal panel, or a gap is reserved between each transparent medium and the liquid crystal panel. According to the invention, the transparent medium (such as glass, quartz and the like) is used for increasing the distance from the imaging surface of the LCD screen, so that the distance between impurities and foreign matters such as spot dust and the imaging focus of the lens is increased, the impurities and foreign matters such as spot dust are isolated outside the imaging focus of the lens, and the influence caused by imaging of the impurities and foreign matters such as spot dust through the lens is effectively reduced.

Description

technical field [0001] The invention belongs to the technical field of projection equipment, and in particular relates to an LCD screen of a projector. Background technique [0002] The imaging focal point of the existing projector lens basically coincides with the imaging surface of the LCD screen, and the base material used in the LCD screen is relatively thin, and the distance between the surface and the imaging surface is too short. Impurities such as dust on the surface will be imaged by the lens through the lens, and will appear as black spots, white spots, black spots and other defects on the projection screen. The scope of imaging) will form 1.2mm black dots, white dots or dark spots on the screen through imaging amplification, which will seriously affect the quality of projected images. At present, in the manufacturing process, about 30% of the devices are defective due to dust and other impurities with a diameter greater than 0.06mm, and 10% of the assembly is def...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/00G02F1/1335
CPCG03B21/006G02F1/1335G02F1/133528G02F1/13356
Inventor 黄雅雯
Owner 黄雅雯
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