Method and structure for improving reliability of optical film assembly

An optical film component and optical film technology, applied in optical components, optics, nonlinear optics, etc., can solve the problems of film wrinkle resistance, wear resistance, salt spray resistance, humidity and heat resistance, and difficult maintenance, and achieve strong maintainability. , create simple and efficient effects

Active Publication Date: 2018-09-11
NANJING GUOZHAO OPTOELECTRONICS TECH CO LTD
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  • Abstract
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Problems solved by technology

[0007] The purpose of the present invention is to invent a method to improve the reliability of optical film components and provide a High-reliability vacuum optical film components, which have the characteristics of high reliability and strong maintainability, can ensure the reliability of optical film components when the liquid crystal display module is in service in environments such as temperature cycles, vibration shocks, low air pressure, and even salt spray and humidity , can be widely used in electronic appliances and other fields

Method used

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  • Method and structure for improving reliability of optical film assembly
  • Method and structure for improving reliability of optical film assembly

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Embodiment 1

[0027] A method for improving the reliability of an optical film assembly. First, place the optical film material in a space composed of two layers of optical substrates through an inner ring sealing structure, and vacuumize the space so that the vacuum degree is 10Pa~100Pa , and secondly, perform secondary sealing on the outer side of the inner ring sealing structure, so that the outer ring sealing structure is formed again between the two layers of optical substrates. During specific implementation, the sealing structure of the inner ring is composed of double-sided pressure-sensitive adhesive tape, and the sealing structure of the outer ring is composed of optical adhesive, and may also be composed of other replaceable materials. The key of the present invention is to make the optical film work in a vacuum environment, so as to adapt to the low temperature and negative pressure environment, reduce the internal and external stress difference, and prevent the substrate glass f...

Embodiment 2

[0029] refer to figure 1 , a high-reliability vacuum optical film assembly is formed by filling the optical film material 20 into the dam structure formed by the upper and lower optical substrates 10, 30 through the inner ring sealing structure 40, and is formed after vacuum treatment and the outer ring sealing structure 50 High-reliability optically reinforced structure. The vacuum degree inside the vacuum optical film assembly is 100 Pa (it can also be set to any value between 10-100 Pa during specific implementation). The optical substrates are the upper anti-reflection glass substrate and the lower strengthened glass substrate respectively, the transmittances are 98% and 92%, the refractive indices are 1.45 and 1.5 respectively, and the coefficients of thermal expansion are both 9×10 -6m / °C, the size of the upper and lower glass substrates is 221mm×168mm; the optical film material is 3 pieces of diffusion film, the size is 217mm×164mm; the sealing materials are silicon-ba...

Embodiment 3

[0031] refer to figure 2 , a high-reliability vacuum optical film assembly is filled with an optical film material 12 in a dam structure composed of upper and lower optical substrates 11, 13 and sealing materials 14, 15. figure 2 It can be seen that the size of the lower optical substrate 13 is larger than that of the upper optical substrate 11 , and a high-reliability optical reinforcement structure is formed after vacuum treatment and secondary sealing. The vacuum degree inside the vacuum optical film assembly is 10 Pa (it can also be set to any value between 10-100 Pa during specific implementation). The optical substrates are the upper reinforced glass substrate 11 and the lower cyclic olefin transparent resin plate 13 respectively, the transmittances are 92% and 93% respectively, the refractive indices are 1.5 and 1.52 respectively, and the thermal expansion coefficients are 9×10 respectively. -6 m / °C and 5×10 -5 m / °C, the dimensions of the upper and lower substrates ...

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Abstract

The invention provides a method and structure improving reliability of an optical membrane assembly. The structure includes optical substrates, optical membrane material and sealing material. The optical membrane material is filled into a box dam structure defined by an upper layer optical substrate and a lower layer optical substrate through the sealing material. A high-reliability optical reinforced structure formed through vacuumizing treatment and secondary sealing is formed. The inner vacuum degree of the vacuum optical membrane assembly is 10 Pa to 100 Pa. The full-seal optical membrane assembly is simple and efficient in manufacture and high in maintainability, and can also prevent failures such as optical membrane crinkles and abrasions and ensures reliability of a liquid display module in environments with strict temperature cycles, low atmosphere, salty mist, humidity and heat, strong vibration and the like.

Description

technical field [0001] The invention relates to the field of liquid crystal display, in particular to an optical film assembly for liquid crystal display, in particular to a method for improving the reliability of the optical film assembly and its high-reliability vacuum optical film assembly. Background technique [0002] The optical film group provides a high-brightness, high-uniformity surface light source for TFT-LCD liquid crystal displays by enhancing the luminous uniformity of the backlight source and improving the light output brightness of the backlight source. It is an extremely important part of the liquid crystal display module. Therefore, the optical film group The reliability of the environment has become one of the important factors restricting the working life of the liquid crystal display module. In particular, the working environment of military liquid crystal displays is harsh: it is not only required to be able to work for a long time under the impact of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B1/14G02B5/02G02B5/04G02B5/30G02F1/13357
CPCG02B1/14G02B5/02G02B5/04G02B5/3033G02F1/133606
Inventor 王璐李忠良郑国兵吴金华洪乙又樊卫华
Owner NANJING GUOZHAO OPTOELECTRONICS TECH CO LTD
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