Light guide board

A light guide plate and light source technology, applied in the field of light guide plates, can solve the problems of poor pass rate of light guide plates, time-consuming and costly processing, etc., and achieve the effect of improving the pass rate of processing and reducing processing costs
CN101424387AActive Publication Date: 2009-05-06AU OPTRONICS CORP
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
AU OPTRONICS CORP
Publication Date
2009-05-06

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Abstract

The invention discloses a light guide plate for guiding luminous beams of a light source, which comprises a photic zone and a plurality of microgrooves. The photic zone is provided with a light incident surface, a first plane, and a second plane, wherein the light source is arranged on one side of the light incident surface, and the first plane is connected with the light incident surface and opposite to the second plane; and the microgrooves are arranged on the first plane, and every microgroove extends along an extending direction respectively, wherein a vertical distance from an edge of every microgroove to the extending direction of every microgroove shows a first sine wave form along the extending direction, and depth changes at the bottom of every microgroove show a second sine wave form along the extending direction. The microgrooves with continuous changes are used for refracting the luminous beams of the light source, thereby the luminous beams leave uniformly from the first plane, and simultaneously defects or flaws caused by bug dusts are avoided. Therefore, the light guide plate does not need high processing precision to be manufactured, and reduces processing cost and promotes process percent of pass.
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Description

technical field

[0001] The invention relates to a light guide plate applied to a backlight module, in particular to a light guide plate which can improve the qualified rate and reduce the production cost. Background technique

[0002] The liquid crystal panel needs light to penetrate the liquid crystal layer, and the human eye can observe the changes of the liquid crystal layer. Existing liquid crystal panels use a backlight module to project light from the back side of the liquid crystal layer. The light provided by the backlight module must penetrate the liquid crystal layer evenly, and the light projected to the liquid crystal layer must have uniform brightness. However, the light source type is a tubular light source, such as a cold cathode tube, and the light emitted by the tubular light source cannot be projected on a plane uniformly and with uniform brightness. Therefore, the optical structure of the backlight module must enable the light to penetrate the liquid crys...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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