Area light source device and driving method thereof, backlight device and display device
A driving method and technology of a backlight device, which are applied in the directions of optics, optical elements, nonlinear optics, etc.
Active Publication Date: 2019-07-26
BOE TECH GRP CO LTD +1
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Problems solved by technology
[0002] Laser has a series of advantages such as high purity, good color gamut, and high luminous efficiency, but because of its high collimation, its application in liquid crystal display surface light source devices has been limited. Therefore, if the high collimation of laser display can be overcome Realizing the use of laser as a light source on the liquid crystal module can effectively improve the display's luminous purity, color gamut, and luminous efficiency.
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[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0038] First aspect, such as figure 1 with figure 2 As shown, the embodiment of the present invention provides a surface light source device, including a laser light bar 1, a rotating reflection mechanism 2, and a diffusion plate 3, wherein:
[0039] Both the laser light bar 1 and the rotating reflection mechanism 2 are located on the side of the first surface of the diffusion plate 3;
[0040] The laser light bar 1 includes a plurality of laser generators ...
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The invention relates to the technical field of display, and discloses an area light source device and a driving method thereof, a backlight device and a display device. The area light source device includes a laser light bar, a rotary reflection mechanism and a diffusion plate, and the laser light bar and the rotary reflection mechanism are both located on one side of a first surface of the diffusion plate; the laser light bar comprises a plurality of laser generators arrayed along a first direction; the rotary reflection mechanism extends along the first direction and is arranged opposite tothe laser light bar, the rotary reflection mechanism is configured to receive laser lased by the laser generators and reflect the laser to the first surface of the diffusion plate; and the rotary reflection mechanism can rotate around a rotation shaft parallel to the first direction, the reflection angle of the rotary reflection mechanism varies along the direction of rotation, and with the rotation of the rotary reflection mechanism, light spots formed by the reflected laser on the diffusion plate are in array distribution. The area light source device adopts the laser as a light source, andcan be used for improving performance such as luminous purity, color gamut and luminous efficiency of the display device.
Description
technical field [0001] The invention relates to the field of display technology, in particular to a surface light source device, a driving method thereof, a backlight device, and a display device. Background technique [0002] Laser has a series of advantages such as high purity, good color gamut, and high luminous efficiency, but because of its high collimation, its application in liquid crystal display surface light source devices has been limited. Therefore, if the high collimation of laser display can be overcome Realizing the use of laser as a light source on the liquid crystal module can effectively improve the display's performance such as luminous purity, color gamut, and luminous efficiency. Contents of the invention [0003] The invention discloses a surface light source device, a driving method thereof, a backlight device, and a display device, and aims to provide a surface light source device using laser light as a light source to improve performances such as l...
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Login to View More IPC IPC(8): G02F1/13357G02B26/12
CPCG02B26/12G02F1/133615
Inventor 张乾杨炜帆高龙岳郭越刘清李维奇李娜
Owner BOE TECH GRP CO LTD