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Laser liquid crystal display device without laser speckle

A liquid crystal display and laser speckle technology, which is applied in optics, instruments, optical components, etc., can solve the problems of high price, high power consumption, and short life, and achieve the effects of reducing manufacturing costs, eliminating screen speckle, and extending life

Active Publication Date: 2016-11-16
许江珂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0021] In view of this, in order to solve the image laser speckle noise caused by the use of laser light source in liquid crystal display equipment, solve the existing speckle removal devices with large volume, high price, short life, high power consumption, incomplete image speckle removal, etc. Problem, the present invention provides a laser liquid crystal display with simple structure, no change in the basic structure of the existing liquid crystal display, no vibration, no energy consumption, high laser utilization rate, and no speckle on the screen, which can effectively eliminate the laser speckle on the screen of the laser liquid crystal display

Method used

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  • Laser liquid crystal display device without laser speckle
  • Laser liquid crystal display device without laser speckle
  • Laser liquid crystal display device without laser speckle

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Effect test

Embodiment 1

[0044] The invention provides a laser liquid crystal display without laser speckle on the picture, which is composed of more than one scattering surface, more than one semiconductor laser, a liquid crystal image modem and other necessary components of the liquid crystal display; for the other necessary components of the liquid crystal display, Since its function and effect are prior art, it will not be described in detail in this embodiment.

[0045] The semiconductor laser emits laser light through more than one scattering surface, and then irradiates the liquid crystal image modem (Liquid Crystal Display) to form an image. in

[0046] The minimum optical distance between each scattering surface and the liquid crystal image modem is L, and the value of L is greater than △C;

[0047] ΔC=λ 2 / Δλ (1)

[0048] Among them, △C is the spatial coherence length of the laser emitted by the semiconductor laser, λ is the center wavelength of the laser emitted by the semiconductor lase...

Embodiment 2

[0053] The invention provides a laser liquid crystal display without laser speckle on the screen, which is composed of more than one scattering surface, more than two semiconductor lasers, a liquid crystal image modem and other necessary components of a liquid crystal display; for the other necessary components of a liquid crystal display, Since its function and effect are prior art, it will not be described in detail in this embodiment.

[0054] The semiconductor laser emits laser light through more than one scattering surface, and then irradiates the liquid crystal image modem to form an image. The minimum optical distance between each scattering surface and the liquid crystal image modem is L, and the value of L is greater than △C;

[0055] ΔC=λ 2 / Δλ (1)

[0056] Wherein, the λ is the maximum wavelength λ among the two or more wavelengths max The central wavelength of , said Δλ is the smallest wavelength λ among the two or more wavelengths min the spectral width.

[0...

Embodiment 3

[0061] Such as figure 2 As shown, in this embodiment, a laser liquid crystal display without laser speckle is mainly composed of a brightness enhancing film 11, a liquid crystal image modem 12, a scattering uniform light film 13, a liquid crystal backlight light guide plate 14 and a semiconductor laser to form the basic optics of the liquid crystal display backlight. structure, wherein the brightness enhancement film 11, the scattering uniform light film 13 and the liquid crystal backlight light guide plate 14 are the scattering surfaces in the liquid crystal display, and L, L1, L2 are the distances of each optical element in the basic optical structure of the liquid crystal display backlight; wherein L=0.5mm, L1=0.5mm, L2=0.5mm.

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Abstract

The invention provides a laser liquid crystal display device without a picture laser speckle. The laser liquid crystal display device is mainly composed of more than scattering surface, more than one semiconductor laser and a liquid crystal image modem. After laser which is emitted from the semiconductor laser passes through more than one scattering surface, the laser is irradiated to the liquid crystal image modem for forming an image. A least light path between each scattering surface which is penetrated by laser and the liquid crystal image modem is L, wherein L is larger than deltaC; deltaC=lambda2 / deltalambda, wherein deltaC is spatial coherent length of the laser which is emitted from the semiconductor laser, lambda is the central wavelength of the laser which is emitted from the semiconductor laser, and deltalambda is the spectral half width of the laser which is emitted from the semiconductor laser. Through adjusting the least light path L between the scattering surface and the liquid crystal image modem, the laser speckle forms a spatial speckle in a space between a scattering surface or diffuse reflection surface and the liquid crystal image modem and is irradiated back to the liquid crystal image modem, thereby eliminating the speckle of the liquid crystal display device.

Description

technical field [0001] The invention relates to a laser liquid crystal display without laser speckle, belonging to the technical field of laser display. Background technique [0002] Laser display technology is a display technology that uses red, green, and blue (RGB) three-color lasers as light sources. It can most truly reproduce the rich and gorgeous colors of the objective world and provide more shocking expressiveness. From the perspective of chromaticity, the color gamut coverage rate of laser display can reach more than 90% of the color space that can be recognized by the human eye, which is more than twice the color gamut coverage rate of traditional display, completely breaking through the color gamut space of the previous three generations of display technology To achieve the most perfect color reproduction in the history of human beings, so that people can see the most real and most beautiful world through the display terminal. [0003] However, when the laser is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/48
CPCG02B27/48
Inventor 许江珂许江临
Owner 许江珂
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