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Light guide board and its design method

A technology of light guide plate and light guide plate dots, which is applied in optics, nonlinear optics, instruments, etc., can solve the problem that the dot distribution on the bottom surface of the light guide plate is easy to be obtained, and achieve the effect of retaining light uniformity and being difficult to reproduce.

Inactive Publication Date: 2005-07-20
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the defect that the dot distribution on the bottom surface of the light guide plate in the prior art is easy to be obtained, the present invention provides a light guide plate whose dot distribution on the bottom surface is not easy to obtain

Method used

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  • Light guide board and its design method
  • Light guide board and its design method
  • Light guide board and its design method

Examples

Experimental program
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Embodiment Construction

[0013] See figure 1 , Is a schematic diagram of the original dot distribution of the light guide plate of the present invention. The light guide plate 2 includes a bottom surface 21 and a plurality of dots 25 arranged on the bottom surface 21. The dots 25 are round, square or rhombus. They are made by printing or injection molding to prevent light from being guided. The inside of the light plate 2 is totally reflected, and is fully reflected and scattered so that the light from the light emitting surface (not shown) further improves the overall optical performance. Wherein, the bottom surface 21 is used to reflect the light projected on it, prevent the light from escaping, and improve the utilization rate of the light beam.

[0014] According to the present invention, the distribution of the plurality of dots 25 on the bottom surface 21 is obtained by the following method:

[0015] (1) Obtain the dot area density D distribution of the light guide plate, and set the maximum dot ar...

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Abstract

This invention is about a kind of light-transmitting board produced by the means of net-points distributing. It comprises a underside and several net-points equipped on the underside. The net-points distributing method includes: obtain the net-points area density distribution of the light-transmitting board, and set the maximum net-points area density and the most same net-points quantity in unit area; calculate the same net-points quantity in at least one unit area using the net-points area density distribution, the maximum net-points area density and the most same net-points quantity; random distribute corresponding quantity of the same net-points in the unit area of the light-transmitting board. The light-transmitting board designed as the net-points distribution of this invention can avoid being reproduced by somebody else.

Description

【Technical Field】 [0001] The invention relates to an optical plate and a design method thereof, in particular to a light guide plate with dot distribution and a design method thereof. 【Background technique】 [0002] Liquid crystal display devices have the advantages of lightness, thinness, and low power consumption. They are widely used in modern information equipment such as notebook computers, mobile phones, and personal digital assistants. Because the liquid crystal itself does not have light-emitting characteristics, it is necessary to provide a backlight module for it to realize the display function. [0003] The prior art backlight module includes a light source and a light guide plate. The light source is arranged relative to the light incident surface of the light guide plate. The light guide plate guides the transmission direction of the light beam emitted from the light source, and converts a linear light source or a point light source into a surface light source to emi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1335
Inventor 林志泉蔡坤荣
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD