Backlights and Displays
A technology for display devices and backlight sources, applied in the directions of light guides, optics, optical components, etc., can solve the problems of difficult luminous brightness of light-emitting devices, reduce and increase the thickness of backlight sources, etc., and achieve the effect of ultra-thin display products and reduced thickness.
Inactive Publication Date: 2020-06-30
BOE TECH GRP CO LTD
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Problems solved by technology
However, for the current side-type backlight, too thin light guide plate will make it difficult to attach the light-emitting device on the side or reduce the brightness of the light. At the same time, the necessary optical auxiliary structure and support structure will also increase the thickness of the backlight, making The thickness of the backlight is difficult to reduce, which cannot meet the application requirements of thin and light electronic products
Method used
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[0041] In order to make the purpose, technical solution and advantages of the present disclosure clearer, the implementation manners of the present disclosure will be further described in detail below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present disclosure, not all of them. Based on the described embodiments of the present disclosure, all other embodiments obtained by persons of ordinary skill in the art without creative effort fall within the protection scope of the present disclosure. Unless otherwise defined, the technical terms or scientific terms used in the present disclosure shall have the usual meanings understood by those skilled in the art to which the present disclosure belongs. "First", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. "Comprising" or similar words mean ...
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Abstract
The disclosure provides a backlight source and a display device, which belong to the display field. The backlight source includes: a light guide plate; a light-emitting device arranged at the edge of one side of the light guide plate in the thickness direction, and the light-emitting side of the light-emitting device faces the inside of the light guide plate; a holographic microstructure arranged on the The relative position between the light emitting side of the light emitting device and the light emitting device is fixed; wherein, the holographic microstructure is configured to reflect or transmit the light emitted by the light emitting device as light propagating inside the light guide plate Parallel light beams, the included angle between the propagation direction of the parallel light beams and the light guide plate is a preset propagation angle. In the present disclosure, the light-emitting device and the holographic microstructure can convert the light emitted by the light-emitting device into parallel light beams in the thickness direction of the light guide plate, so even if the light guide plate is very thin, the light can be coupled into the light guide plate according to requirements, which helps It is used to reduce the thickness of backlight and related products, and realize ultra-thin display products.
Description
technical field [0001] The present disclosure relates to the display field, in particular to a backlight source and a display device. Background technique [0002] The liquid crystal display device is a passive light-emitting device, which does not emit light itself, and needs to cooperate with a backlight source to provide a light source to make the liquid crystal panel display images. Compared with traditional direct-lit backlights, edge-lit backlights are thinner and thinner, and are therefore widely used in consumer electronics products using display devices. In a structural example of an edge-lit backlight, the light-emitting device is arranged on the side of the light guide plate, and the light is coupled into the light guide plate from the side, and uniformly exits from the light-emitting surface of the light guide plate through a lens or a prism. However, for the current side-type backlight, too thin light guide plate will make it difficult to attach the light-emitt...
Claims
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IPC IPC(8): G02F1/13357G02B6/00
CPCG02F1/133615G02B6/005G02F1/133606G02B6/0018G02F1/19G02F1/292G02F1/133504G02F1/133617G02B6/0031G02B6/0055G02B6/0053G02B6/0051G02B6/0056
Inventor 王维谭纪风孟宪东赵文卿陈小川
Owner BOE TECH GRP CO LTD