Light guide plate, backlight module and display device
A technology of backlight module and light guide plate, which is applied in the field of backlight module, display device and light guide plate, can solve the problems of low brightness in the four corners of the display screen, etc.
Inactive Publication Date: 2014-08-27
BOE TECH GRP CO LTD +1
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Problems solved by technology
[0003] However, as the size of flat-panel display devices increases, users find that the brightness of the four corners of the display screen is lower than the brightness of the center when viewing the flat-panel display device directly in front of it.
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[0035] The existing light guide plate allows the light to exit perpendicular to the display screen, rather than converging on the viewer or test lens directly in front of the display screen, so that when viewing or testing directly in front of the display screen, the four corners and the center of the display screen exist. Poor brightness, especially in large-size flat panel display devices.
[0036] In view of this, the present invention provides a light guide plate. By changing the rib structure on the light-emitting surface of the light guide plate, the light emitted from the display screen is converged to the center of the display screen, reducing the brightness of the four corners and the center of the display screen. Poor, thereby improving the display quality of the display device.
[0037] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the embodiments of the present invention will be described in detai...
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The invention relates to the technical field of the display, in particular to a light guide plate, a backlight module and a display module, which is used for improving the display quality of the display device. The invention discloses the light guide plate, and the light guide plate comprises a light guide plate substrate with a light emitting surface, a plurality of first triangular prisms which are arranged in four corners of the light emitting surface and a plurality of second triangular prisms which are arranged on other positions of the light emitting surface, wherein the first triangular prisms in each corner are parallel to each other, a first angle formed between a first side prism surface which is opposite to the center of the light emitting surface and the light emitting surface is 45DEG, and an angle formed between a second side prism surface facing towards the center of the light emitting surface and the light emitting surface is gradually reduced in the direction facing towards the center of the light emitting surface; and the cross section of each second triangular prism is of an isosceles right triangular shape. The invention also relates to a backlight module comprising the light guide plate and a display device comprising the backlight module.
Description
technical field [0001] The invention relates to the field of display technology, in particular to a light guide plate, a backlight module and a display device. Background technique [0002] In recent years, flat-panel display devices have attracted widespread attention, and correspondingly higher requirements have been put forward for flat-panel display devices; therefore, before the flat-panel display The device shows uniformity of brightness. [0003] However, as the size of the flat panel display device increases, the user finds that the brightness of the four corners of the display screen is lower than that of the center when viewing the flat panel display device directly in front of it. like figure 1 As shown, the light emitted by the flat panel display device 10 is perpendicular to the display screen, and the human eye 20 looks directly in front of the flat panel display device 10 and finds that the brightness of the four corners of the display screen is lower than t...
Claims
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IPC IPC(8): G02B6/00F21V8/00F21S8/00G09F9/00
Inventor 贾智帅
Owner BOE TECH GRP CO LTD