Display glass protection screen with antifogging coat and LCD using same

Abstract

The invention provides a display glass protection screen provided with an antifogging coating, comprising a steel glass substrate, wherein, a double-layer antireflection filming layer of TiO2 / SiO2 or Nb2O5 / SiO2 is plated by adoption of the vacuum magnetron sputtering method on one surface of the substrate, or a multilayered antireflection filming layer of TiO2 / SiO2 or Nb2O5 / SiO2 is overlapped and plated; a double-layer filming layer of TiO2 / SiO2, a double-layer filming layer of Nb2O5 / SiO2, a multilayered overlapped filming layer of TiO2 / SiO2 or a multilayered overlapped filming layer of Nb2O5 / SiO2 are formed in turn from the substrate to the outside; a thermocuring / photo-curing acroid resin layer with at least one function among scratch resistance, antistatic function, antifogging function and antireflection is coated on the other surface of the substrate. The protection screen of the invention can reduce reflectivity, improve transmittance and optical image effects, greatly reduce cost and fully improve the impact failure resistance of the display screen and become a safe protection screen. The invention also provides a liquid crystal display using the glass protection screen.

Description

Technical field: [0001] The present invention is related to the protective screen of liquid crystal display (LCD), especially to prevent the light reflection of the display panel, improve the light transmittance of the liquid crystal display and protect the display screen with anti-fogging function assembled in front of the liquid crystal display panel The display glass protective screen with high light transmittance is related to the liquid crystal display using the protective screen. Background technique: [0002] The working principle of liquid crystal display (LCD hereinafter referred to as LCD) is known. The LCD device is a device that controls the projection intensity and recognizes the image when the backlight and the emitted light pass through the polarizer and the liquid crystal box, that is, the brightness of the LCD depends on passing through the liquid crystal box ( The light transmittance of the LCD screen) and the brightness of the color filter CF (the light tr...

AI Technical Summary

Problems solved by technology

Therefore, it has been everyone's pursuit to reduce the reflectivity of the panel and the protective screen, increase the surface hardness and scratch resistance, but also improve the light transmittance of the protective screen or protective film and the physical and mechanical protection performance of the display screen, especially the use of What kind of technical solution to reduce the surface reflectivity of the protective screen material has been emerging, and there is a sol-gel method to deposit TiO on the surface of the resin layer. 2 or Nb 2 o 5 / SiO 2 The anti-reflection and anti-reflection coating layer also uses the surface dip-coated silicone anti-reflection and anti-reflection layer, but because the film thickness is not easy to control, the light transmittance can only reach about 92%, and the yield is not high, and the surface is prone to rainbows. So far, the protective screen or protective film has not undergone fundamental changes, especially the reflectivity is less than 1%, the light transmission is greater than 93%, and the industrialized low-cost practical technology and protective screen materials have not yet appeared.

If a glass material protective screen is used in front of the display panel, or a protective screen coated with an anti-reflection and anti-reflection film layer is used on the viewing surface, because there is a protective distance between the protective screen and the display panel in order to prevent collision damage to the display panel during assembly, so There is an air interface instead of being pasted together. When the ambient humidity is high and the temperature is low, there will be a certain temperature rise when the LCD is turned on, which will cause short-term fogging on the surface of the glass protective screen opposite the display panel due to temperature difference and humidity. , so that the technical difficulty of using high transmittance glass and coated substrates instead of resin sheets may cause fogging (because resin substrates will not produce fogging), in order to combine high transmittance and low reflectivity Coated glass protective screen is used for LCD display, there must be a technical solution to deal with this problem

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