Viewing angle widening film, backlight module and liquid crystal display with the same
A liquid crystal display and backlight module technology, which is applied in the field of optical film, can solve the problems of complex structure, optical film does not have the ability to widen the viewing angle of the display, and reduce the effect of light transmission and light collection, so as to achieve the effect of widening the deflection angle of light
Active Publication Date: 2017-07-04
JIANGSU SHUANGXING COLOR PLASTIC NEW MATERIALS
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Problems solved by technology
[0005] However, as mentioned above, the optical sheet in the prior art does not have the function of widening the viewing angle of the display. The function of widening the viewing angle is provided by an additional diffusion sheet, and the existing LCD viewing angle cannot be solved by a single optical sheet. narrow question
Moreover, the multilayer adhesive structure of the optical sheet in the prior art has too many layers, the light transmission and light concentrating effects will inevitably decrease with the increase of the number of layers, and the complex structure leads to high manufacturing costs
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[0023] In order to have a clearer understanding of the technical features, objects and effects of the present invention, the specific embodiments of the present invention will now be described with reference to the accompanying drawings. Wherein, the same parts use the same reference numerals.
[0024] As mentioned in the background art section, in view of the complex structure of the optical sheet in the prior art, the optical sheet itself cannot widen the viewing angle and needs to be used in conjunction with the diffuser sheet, so that the brightness of the LCD (Liquid Crystal Display, liquid crystal display) is suppressed, the present invention provides a A new optical film, the optical film is a viewing angle widening film 1 that can be used for the LCD backlight module, which is arranged on the outer side (facing the light guide plate 2 of the backlight module as a component of the LCD backlight module) of the backlight module. LCD panel side). In addition, the present ...
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Abstract
The invention provides a viewing angle widening membrane used for an LCD backlight module. The viewing angle widening membrane comprises a plurality of prism structures parallelly arranged on a transparent PET substrate. Each prism structure at least comprises a first prism stripe, wherein the cross section of each first prism stripe is provided with a recess part facing one side of the light source of the lateral side of a light guide plate and a protruding part away from one side of the light source. The invention further provides the backlight module which is provided with the viewing angle widening membrane and used for a liquid crystal display and the liquid crystal display. The viewing angle widening membrane has the advantages that the curved surface structure of each recess part and each protruding part of each prism structure formed on the transparent PET substrate, the incoming light from the light source is not limited at one specific angle, the light is deviated and refracted along a continuous angle range vertical to the curved surface, the light deviation angle of the prism structure is widened, the wide-viewing-angle light source can be provided to an LCD panel, and basis is provided to the viewing angle widening of the LCD panel.
Description
technical field [0001] The present invention relates to an optical film that can be used for LCD (Liquid Crystal Display, liquid crystal display) backlight modules, in particular to a viewing angle widening film that can widen the LCD viewing angle and can be used for LCD backlight modules. It also relates to a backlight module and a wide viewing angle liquid crystal display using the viewing angle widening film. Background technique [0002] The usual structure of a liquid crystal display is that a glass substrate, a color filter, an electrode, a liquid crystal layer and a transistor film are sandwiched between two polarizers whose polarization directions are perpendicular to each other. Liquid crystal molecules are anisotropic substances with a certain aspect ratio. The transistor film is equivalent to a switch. When in use, the light emitted by the backlight module passes through the lower polarizer to become polarized light with a certain polarization direction. When t...
Claims
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IPC IPC(8): F21V5/02F21S8/00G02F1/13357
CPCG02B5/045G02F1/133606G02F1/133607
Inventor 吴培服
Owner JIANGSU SHUANGXING COLOR PLASTIC NEW MATERIALS