Optical film and backlight module for non-patterned light guide plate
An optical film, backlight module technology, applied in optics, optical components, light guides, etc., to reduce assembly operations, eliminate uneven brightness, and save production costs
Active Publication Date: 2018-07-06
JIANGSU SHUANGXING COLOR PLASTIC NEW MATERIALS
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- Application Information
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Problems solved by technology
[0006] Specifically, the technical problem to be solved by the present invention is to provide an optical film and a backlight module specially suitable for non-patterned light guide plates. The optical film is attached to the surface of the non-patterned light guide plate to make the outgoing light uniform, eliminate the defect of uneven brightness of the liquid crystal display, save production and assembly costs, and improve the display effect
Method used
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[0017] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described with reference to the accompanying drawings. Wherein, the same parts adopt the same reference numerals.
[0018] Based on the solution of patterning the surface of the light guide plate by printing or laser forming in the prior art, the production and assembly costs are high, the high-quality light guide plate cannot be provided, and it is easy to increase the cost of the display and reduce the display effect due to the failure of the light guide plate. The present invention provides an optical film and a backlight module suitable for a non-patterned light guide plate, the optical film can be used without changing the structure of the existing non-patterned light guide plate Attached to the surface of the non-patterned light guide plate to make the outgoing light uniform.
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The invention provides an optical diaphragm for a pattern-free light guide plate. The optical diaphragm is attached to a side face of the pattern-free light guide plate, and includes a transparent base material film, a plurality of parallelly arranged prism columns whose cross sections are isosceles trapezoids are formed on the base material film, the closer a place is to an LED light source, the larger the density of the prism columns is, and the farther a place is from the LED light source, the smaller the density of the prism columns is. The optical diaphragm for the pattern-free light guide plate of the abovementioned structure is provided, without changing the structure of an existing pattern-free light guide plate, by attaching the optical diaphragm having a specific pattern structure on the surface of the pattern-free light guide plate, backlight that enables luminance of whole display to be uniform is formed, the defect that luminance of a liquid crystal display is nonuniform can be eliminated, compared with a technical solution of patterning the light guide plate in the prior art, the optical diaphragm provided by the invention can reduce assembling operation, save production cost, and can improve a display effect.
Description
technical field [0001] The invention relates to an optical film that can be used in a liquid crystal display side lighting backlight module, in particular to an optical film for a non-patterned light guide plate and a backlight module. Background technique [0002] In a liquid crystal display (Liquid Crystal Display, LCD) side lighting backlight module, usually a plurality of LED point light sources are distributed in a linear arrangement on one or more sides of the light guide plate to provide illumination. Due to the luminous angle of the LED point light source itself and the distance between adjacent LEDs, the part of the light penetrating outside the light guide plate that is close to the LED point light source is bright, and the part far from the LED point light source is dark, so the entire liquid crystal display There will be an effect of uneven brightness. [0003] The prior art usually adopts the scheme of patterning the light guide plate to achieve uniform brightn...
Claims
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IPC IPC(8): G02B6/00
CPCG02B6/0036
Inventor 吴培服
Owner JIANGSU SHUANGXING COLOR PLASTIC NEW MATERIALS