Optical element, light guide plate, prism, backlight module and display device
A technology for optical components and backlight modules, which is applied in the fields of optical components, backlight modules and display devices, light guide plates and prisms, can solve the problems of low yield and small viewing angle, and can improve the light propagation angle, solve the problem of small viewing angle, The effect of improving the viewing angle
Active Publication Date: 2015-12-02
BOE TECH GRP CO LTD +1
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Problems solved by technology
However, there are problems such as too small viewing angle and low yield rate.
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[0028] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.
[0029] like figure 1 As shown, an optical element is provided in the embodiment of the present invention, which includes a light-transmitting base 100, and the light-transmitting base 100 includes a first surface, and on the first surface, arrays parallel to each other and along a predetermined direction are arranged. A plurality of strip-shaped prisms 200 extending in another predetermined direction; wherein, in the arrangement direction of the plurality of strip-shaped prisms 200, each of the strip-shaped prisms 200 is at a center near the center of the transparent base 100 The side has a refraction surface 201, and the refraction surface 201 gradually slopes away from the first surface from an end close to the ce...
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The invention provides an optical element, a light guide plate, a prism, a backlight module and a display device. The optical element comprises a light transmitting substrate, comprising a first surface; a plurality of parallel strip prismoids extending along a preset direction is arranged on the first surface along another preset direction; in the arranging direction of the strip prismoids, one side, close to the center of the light transmitting substrate, of each strip prismoid is provided with a refraction surface, each refraction surface is gradually inclined to a direction away from the first surface from one end close to the center of the light transmitting substrate to the end close to the edge of the light transmitting substrate, and from the strip prismoid closest to the center of the light transmitting substrate to the strip prismoid furthest away from the center of the light transmitting substrate, included angles between the refraction surfaces and a normal of the first surface are gradually increased. When the optical element provided by the invention is applied to a backlight module as a light guide plate, a view angle of a display can be increased, and the problems of small view angle and lower yield in the prior art are solved.
Description
technical field [0001] The invention relates to the field of display technology, in particular to an optical element, a light guide plate, a prism, a backlight module and a display device. Background technique [0002] With the development of science and technology and the new demand of consumers for liquid crystal displays, displays with high brightness and low power consumption have become an inevitable mainstream development trend. Existing high-brightness displays are mostly implemented by attaching polarizers to the display panel or adding special incremental films to the backlight unit (BLU). As the brightness increases, the cost also increases significantly. There are also a few who use the method of prismLGP with reverse prism. The upper surface of the LGP is made into a prism, and the special design of the dots on the lower surface of the LGP is combined with Reverseprism to achieve the purpose of improving brightness. However, there are problems such as too small ...
Claims
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IPC IPC(8): G02B5/04G02B6/00G02F1/13357
CPCG02B5/0231G02B5/0242G02B6/0038G02B6/0058G02B6/0053G02B5/04G02B6/00G02B6/004
Inventor 孙文佳刁凯朴仁镐
Owner BOE TECH GRP CO LTD