Brightness-increasing module and light source device including same

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: 2008-11-26
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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  • Brightness-increasing module and light source device including same
  • Brightness-increasing module and light source device including same
  • Brightness-increasing module and light source device including same

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Embodiment Construction

[0061] The technical means and effects used by the present invention to achieve the purpose will be described below with reference to the accompanying drawings, and the embodiments listed in the following drawings are only for auxiliary description, to facilitate understanding, but the technical means of the present invention are not limited to Figures listed.

[0062] 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 4A Middle 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 t...

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Abstract

The invention relates to a brightening module which includes a microstructure optical modulation module and a polarization module. The microstructure optical modulation module includes the first optical side and the second optical side which can receive the incident light and the polarization module is opposite to the second optical side; the microstructure optical modulation module also includes a diffusion part and an optical collecting part; the diffusion part is made by the transparent material and it can diffuse the incident light and the optical collecting part is made by the transparent material which can collect the incident light. The diffusion part and the optical collecting part contacts with each other and it is on the first optical side.

Description

technical field [0001] The invention relates to a brightness enhancement module and a light source device, in particular to a brightness enhancement module and a light source device using the brightness enhancement module, which can arrange a diffusion component and a light collection component on the same film layer, and can strengthen polarized light. 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 use efficiency of light. Therefore, in some display devices that require high brightness, in order to improve brightness and incre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/1335
Inventor 姚柏宏潘奕凯鲍友南黄珩春林宗信
Owner IND TECH RES INST
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