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Intensifying module and light source device

A light source device and polarized light technology, applied in optics, nonlinear optics, instruments, etc., can solve problems such as reducing the efficiency of light use

Inactive Publication Date: 2008-12-03
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The brightness enhancement sheet 320 used in this structure generally has a rhombic structure. However, although the use of the rhombic structure can concentrate the light and narrow the angle, it is easy to cause total reflection of the light with a small angle and reduce the light intensity. efficiency of use

Method used

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  • Intensifying module and light source device

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Embodiment Construction

[0152] The technical means and functions used to achieve the purpose of the present invention will be described below with reference to the accompanying drawings, and the embodiments listed with reference to the accompanying drawings are only auxiliary illustrations, and the technical means of this case are not limited thereto.

[0153] See Figure 4A , the rhombic structure has good light-gathering characteristics in optical effects (reducing the divergence angle of the divergent light source); according to Snell's Law (Snell's Law), when the incident light 432 enters the prism 430, if the angle θ is greater than the critical angle of total reflection , then the incident light 432 will be totally reflected in the prism 430 ( Figure 4AMiddle dotted arrow), if the angle θ is less than the critical angle of total reflection, then the incident light 432 after exiting the prism 430 ( Figure 4A The solid arrow in the middle) will deviate from the normal again ( Figure 4A middl...

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Abstract

A kind of brightening module includes one microstructure optics modulation module and one polarized light module. The microstructure optics modulation module is made by the euphotic material and it has one the first optics surface and one the second optics surface which can incept the incident light. The polarized light module is located opposite to the second optics surface. The microstructure optics modulation module also includes at least one microstructure cell, this microstructure cell is located on the first optics surface and it has the first flank which can diffuse the incident light and the second flank which can focus the incident light.

Description

technical field [0001] The invention relates to a brightness enhancement module and a light source device, in particular to a brightness enhancement module which can arrange a diffusion component and a light collection component in the same film layer and can strengthen polarized light, and a light source device using the brightness enhancement module. Background technique [0002] At present, in the backlight module of the display device, the combination of the brightness enhancement film (rhombic lens) (BEF) and the reflective polarizer (DBEF or CBEF) is mainly used to achieve the purpose of light concentration. The prism structure has good light collection in terms of optical effect. characteristics (reducing the divergence angle of the divergent light source), but it is easy to cause total reflection of light with a small angle and reduce the efficiency of light use. Therefore, in some display devices with high brightness requirements or battery-powered displays, in order...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/1335
Inventor 姚柏宏潘奕凯孙翊庭鲍友南黄珩春
Owner IND TECH RES INST
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