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Flat light source module

A planar light source and optical surface technology, applied in optics, nonlinear optics, instruments, etc., can solve the problems of reducing the efficiency of light use, and achieve the effects of uniform distribution, good light utilization rate, and high brightness

Active Publication Date: 2007-02-28
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The structural layer diaphragm used in this structure is a simple prismatic structure. Although the use of a prismatic structure can concentrate the light and reduce the angle, it is easy to cause total reflection of the light with a small angle, thus reducing the use efficiency of light.

Method used

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Embodiment Construction

[0057] The technical features and effects of the present invention will be described in detail below with reference to the accompanying drawings. However, the attached drawings and the examples are only for auxiliary description, so as to facilitate a profound understanding of the essence of the present invention, and are not intended to limit the present invention.

[0058] Please refer to FIG. 3A , the prism structure has good light-collecting characteristics (reduces the divergence angle of the divergent light source) in terms of optical effect; according to Snell's Law, when the incident light 32 enters the prism 30, if the angle θ is greater than the full If the angle θ is less than the critical angle of total reflection, the incident light 32 will be totally reflected in the prism 30 (dashed arrow in FIG. 3A ). arrow) will again deviate from the normal (dashed line in Figure 3A), thus achieving a light-collecting effect.

[0059] In terms of optical effect, the spherica...

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Abstract

The invention relates to a plane light source module, which comprises a compound optical membrane and a light resource, wherein said membrane has first optical surface and second optical surface for receiving one incident light; said light resource has surface lighting state and faces said second optical surface; the membrane has one disperse part and one collecting part; the disperse part is made from transparent material to disperse the incident light; the collecting part is made from transparent material to collect the incident light; said disperse part and collecting part are contacted parallel at the first optical surface.

Description

technical field [0001] The invention relates to a plane light source module, in particular to a plane light source module matched with a composite optical film, wherein the composite optical film has a diffusing component and a light collecting component arranged on the same film layer. Background technique [0002] In today's society, liquid crystal displays have been widely used in personal computers and various image display products. Since this type of display is a passive image display, a flat light source must be added behind it so that the image on the liquid crystal panel can be clearly displayed. In order to achieve this purpose, the light of the plane light source must have a certain degree of divergence and uniform brightness. [0003] As can be seen from the above, in the backlight module, the two most important parts are the light source and the optical film group placed on the light source. Planar light sources include small molecule organic light emitting di...

Claims

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Application Information

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IPC IPC(8): G02F1/1335
Inventor 姚柏宏鲍友南黄珩春潘奕凯孙翊庭
Owner IND TECH RES INST