Edge-lighting backlight module and light guide element and linear light source thereof

Abstract

The invention provides an edge-lighting backlight module and a light guide element and a linear light source thereof. The edge-lighting backlight module comprises at least one point light source, thelight guide element and a flat light guide plate, wherein the light guide element comprises a plurality of microstructures to destroy the total reflection of light in the light guide element and makethe light uniformly transmit out of the light guide element; and the spacial distribution of the plurality of microstructures depends on the light distribution of the at least one point light source on the light guide element, so the at least one point light source is converted into a linear light source with uniform emergent light. Therefore, the flat light guide plate can reflect the light of the linear light source to form an area source with uniform emergent light. The edge-lighting backlight module can reduce the number of parts and strengthen heat dissipation, and can avoid the conditions of non-uniform brightness.

Description

technical field [0001] The invention relates to a backlight module, in particular to an edge-light backlight module, a light guide element and a line light source thereof. Background technique [0002] With the advancement of electronic technology, especially the prevalence of portable electronic products in daily life, the demand for thin, light, small and low power consumption displays is increasing day by day. Among them, liquid crystal displays (Liquid Crystal Display, LCD) are often used in modern information equipment such as notebook computers, mobile phones, and personal digital assistants due to their advantages such as low power consumption, low heat generation, light weight, and non-radiation, and Has gradually replaced the traditional cathode ray tube display (Cold Cathode Tube Display, CRTDisplay). [0003] Because the liquid crystal itself does not have light-emitting properties, it needs to provide a backlight module to realize the display function. A tradit...

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Problems solved by technology

[0015] In view of the above-mentioned problems in the background of the invention, in order to meet the needs of the industry, the present invention provides an edge-lit backlight module that can be used to solve the above-mentioned traditional edge-light backlight module and improve the above-mentioned various defects. Reduce the number of parts of the backlight module to increase product reliability, and increase the convenience of heat dissipation management by moving the light and heat source to the side of the backlight module, which can greatly reduce the occurrence of uneven brightness

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