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Safety glass protection screen for LCD, LCD using the same

A technology of liquid crystal display and safety glass, which is used in instruments, optics, nonlinear optics, etc., can solve the problems of rainbows on the surface, reduce surface reflectivity, and difficult to control film thickness, so as to improve image clarity and improve safety. , the effect of low cost

Inactive Publication Date: 2009-12-16
甘国工
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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, 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 light transmittance glass and coated substrates instead of resin sheets may cause fogging (because resin substrates will not produce fogging), in addition, although glass substrates have higher Strength can play a good role in protecting the display panel, but if it is broken, there will be a danger of scratching the audience. The display must have a technical solution to deal with these applications that are anti-fog, anti-static, and not easy to break and scratch people. problem

Method used

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  • Safety glass protection screen for LCD, LCD using the same
  • Safety glass protection screen for LCD, LCD using the same
  • Safety glass protection screen for LCD, LCD using the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] figure 1 Figure 1 of this example is given. see figure 1 , High light transmittance safety glass protective screen 1 uses 3mm thick toughened glass as glass substrate 2. On one side of the glass substrate 2, a thin film 3 of anti-reflection and anti-reflection film system is coated with a vacuum magnetron sputtering method, and the thin film 3 is sequentially made of TiO from the substrate to the outside. 2 / SiO 2 / TiO 2 / SiO 2 composition, its thickness ranges from TiO 2 5-18nm, SiO 2 20-50nm, TiO 2 20-50nm, SiO 2 It is 70-140nm, and the coating 4 that prevents dirt from adhering is sprayed on the outermost surface. The coating 4 is a commercially available organic silicone oil commodity. The glue 5 is compounded with a polyester film (BOPET) 6 with a thickness of 125 μm on the glass substrate 2, and a hardened light-cured acrylate film layer 7 is coated on its surface, with a thickness of 12 μm, so that its surface hardness is greater than 2H, on the acrylat...

Embodiment 2

[0021] figure 2 The structure diagram of Embodiment 2 is given. see figure 2 , the safety glass protective screen 12 with high light transmittance has adopted 3 mm thick glass without tempering treatment as the glass substrate 10, and there is an acrylic pressure-sensitive adhesive 5 on one side of the glass substrate 10, through which the pressure-sensitive adhesive 5 is attached to the glass substrate Sheet 10 is compounded with polyester film (BOPET) 6 of 125 μm thickness, on polyester film (BOPET) 6 on its surface coated with a layer of hardened light-cured acrylate film layer 7, thickness has 12 μm, makes Its surface hardness is greater than 2H, and the film 3 of the anti-reflection and anti-reflection film system is coated on the 7 sides by vacuum magnetron sputtering method, and the other side of the glass substrate 10 has an acrylic pressure-sensitive adhesive 5, through which the pressure-sensitive adhesive 5 On the other side of the glass substrate 10, a polyeste...

Embodiment 3

[0023] image 3 Figure 3 of this embodiment is given, image 3 It is a structural schematic diagram of the liquid crystal display of the present invention, and the liquid crystal display is made up of a display housing 13, a display 14, a safety glass protective screen 1 (or 12) with a high light transmittance in the embodiment 1 (or 2), the protective screen 1 and the display screen 15 There is a 5mm safety dimension 16 during installation. During installation, the plastic film surface 6 (which is coated with a layer of semiconductor film 9 or 11) faces the display. Since the double-sided reflectivity is superimposed less than 1.5%, there is basically no ghosting. The protection screen of the present invention replaces the PET protective film with only about 90% light transmittance on the display panel in the past, and the total light transmittance is increased by 6%, so that the LCD TV image is brighter and clearer.

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Abstract

The invention provides a safety glass protective screen with high light transmittance used for a liquid crystal display device, comprising a glass substrate, wherein, at least one surface of the glass substrate is compounded with a layer of plastic film by using a resin binder, the glass substrate and / or the plastic film surface are / is plated with a transmission-increasing and reflection-deducting film syngenic membrane which is composed of an Nb2O5 / SiO2 film or a TiO2 / SiO2 film. The protective screen of the invention can reduce the reflectivity and improve the light transmittance and the effect of an optical image, fully improve the impact fracture resistant capacity of a display screen and become the safe protective screen. The invention also provides the liquid crystal display device using the glass protective screen.

Description

Technical field: [0001] The present invention is related to the protective screen of liquid crystal display (LCD), especially to the high light transmittance which prevents the light reflection of the display panel, improves the light transmittance of the liquid crystal display and plays a role of safety protection for the display screen, which is assembled or pasted in front of the liquid crystal display panel It is related to the safety glass protective screen and the LCD device using the protective screen. Background technique: [0002] The working principle of liquid crystal display (hereinafter referred to as LCD) is known. The LCD device is a device that controls the projection intensity to identify images when the backlight and emitted light pass through the polarizer and the liquid crystal box, that is, the brightness of the LCD depends on the brightness of the LCD through the liquid crystal box (LCD). The light transmittance of the screen) and the brightness of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B1/00G02F1/13B32B33/00B32B7/02
Inventor 甘国工
Owner 甘国工
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