Optical film, backlight module and display device
A technology of optical film and backlight module, which is applied in optics, nonlinear optics, instruments, etc., can solve the problem of not being able to provide concentrating effect and anti-scratch, shading and other performances at the same time, high haze of lens structure, and anti-scratch Low ability and other problems, to achieve the effect of improving light transmittance, good shielding, and high light transmittance
Active Publication Date: 2018-05-18
BOE TECH GRP CO LTD +1
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Problems solved by technology
The structure used to gather light generally includes a prism structure and a lens structure. The prism structure has the advantages of high light transmittance, but low haze, poor shielding, and low scratch resistance
The lens structure has the advantages of high haze, good shielding, and strong scratch resistance, but the light transmittance is low
Therefore, neither the prism structure nor the lens structure can simultaneously provide good light-gathering effect and anti-scratch, shading and other performances
Method used
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[0028] The optical film of the invention is used for converging light, and combines the advantages of convex lenses and prisms. It not only has high light transmittance, but also has high haze and good shielding performance, and improves the effect of converging light.
[0029] The optical film includes a plurality of optical structures, the optical structures include a convex lens structure and a prism structure, and the prism structure is located at the periphery of the convex lens structure. The prism structure located at the periphery has a strong converging effect on light and has a high light transmittance, thereby improving the light transmittance of the entire optical film and improving the brightness of the light source. The convex lens structure located in the middle has a higher haze, which can increase the shielding performance of the entire optical film. Therefore, the optical film of the present invention has the advantages of high light transmittance and high ha...
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The invention relates to the technical field of liquid crystal display and discloses an optical diaphragm, a backlight module and a display device. The optical diaphragm comprises a plurality of optical structures, each optical structure comprises a convex lens structure and a prism structure, the prism structures are arranged on the peripheries of the convex lens structures, the prism structures located on the peripheries have a high converging function on light rays, light transmittance is high, and therefore the light transmittance of the whole optical diaphragm can be improved, and the illumination of a light source is improved. In addition, the convex lens structures located in the middles have high haziness, so that the shielding performance of the whole optical diaphragm can be improved. Thus, the optical diaphragm has the advantages of being high in light transmittance, high in haziness and good in shielding performance.
Description
technical field [0001] The invention relates to the technical field of liquid crystal display, in particular to an optical film, a backlight module and a display device. Background technique [0002] Since the liquid crystal itself does not emit light, in various liquid crystal display devices (Liquid Crystal Display, hereinafter referred to as "LCD") such as liquid crystal displays and liquid crystal TVs, it is necessary to rely on an external backlight source to realize display. [0003] Among them, the light source required by the liquid crystal display is a surface light source, and the light source of the backlight module is usually a light emitting diode. Therefore, before the light from the backlight source is supplied to the liquid crystal display panel, it is necessary to set an optical element to adjust the light so as to form a uniformly distributed surface light source. The optical element includes a light guide plate, a reflection plate, an optical film and the...
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IPC IPC(8): G02F1/13357
CPCG02F1/133606G02F1/133615G02F1/133607
Inventor 马文文石海军朴仁镐
Owner BOE TECH GRP CO LTD