Backlight module and display device
A technology of backlight module and dimming device, which is applied in optics, nonlinear optics, instruments, etc., can solve the problem of uniformity of the picture in the visible area, cannot meet the pursuit of ultra-thin liquid crystal display devices, and the size of the direct-type backlight module is thick And other problems, to achieve the effect of widening the distance, improving the uniformity, and strengthening the mixed light
Pending Publication Date: 2021-09-03
BOE TECH GRP CO LTD +1
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Problems solved by technology
[0003] The backlight types of liquid crystal display devices mainly include direct-type backlight and side-type backlight. The direct-type backlight has become the mainstream of the market because the partitions of the LED light source and the partitions of the liquid crystal display panel can be one-to-one corresponding, and the effect of local dimming is good. However, the size of the direct-lit backlight module is relatively thick, which cannot meet the pursuit of ultra-thin liquid crystal display devices in the market
[0004] However, the liquid crystal display device of the side-type backlight module has the problem of uniformity of the picture in the visible area.
Method used
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[0042] The application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain related inventions, rather than to limit the invention. It should also be noted that, for ease of description, only parts related to the invention are shown in the drawings.
[0043] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and embodiments.
[0044] like figure 1 As shown, the existing backlight module is mainly supported by the support columns at both ends of the backplane structure to support the light guide plate, leaving a light mixing distance A between the light guide plate and the LED lamp. Since the display is placed vertically...
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The invention discloses a backlight module and a display device, and the backlight module comprises a back plate; a circuit board arranged on the back plate; a light-emitting element and a supporting device which are arranged on the circuit board; and a light guide plate which is supported by the supporting device; wherein the supporting device at least partially surrounds the light-emitting element. The light guide plate is better supported through the supporting device, so that the light mixing distance between the light guide plate and the LED is more uniform, and the uniformity of screen outgoing is better improved; according to the backlight module, the dimming device is arranged on the supporting device in the light path direction of the light-emitting element, secondary light distribution is added, the switching angle of the LEDs is enlarged, and light mixing between the LEDs is enhanced, so that the distance between the LEDs can be increased, the number of the light source LEDs is reduced, heat accumulation is reduced, and the risk of hot melting of the light guide plate is avoided or reduced.
Description
technical field [0001] The present application generally relates to the field of display technology, and specifically relates to a backlight module and a display device. Background technique [0002] Among flat panel display devices, Liquid Crystal Display (LCD) has the characteristics of small size, low power consumption, relatively low manufacturing cost and no radiation, and occupies a dominant position in the current flat panel display market. [0003] The backlight types of liquid crystal display devices mainly include direct-type backlight and side-type backlight. The direct-type backlight has become the mainstream of the market because the partitions of the LED light source and the partitions of the liquid crystal display panel can be one-to-one corresponding, and the effect of local dimming is good. However, the size of the direct type backlight module is relatively thick, which cannot meet the pursuit of ultra-thin liquid crystal display devices in the market. [0...
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Login to View More IPC IPC(8): G02F1/13357
CPCG02F1/1336G02F1/133607G02F1/133603G02F1/133608G02F1/133605
Inventor 郭燕茹储周硕曾勇黄品德曲则宇秦蕾李帅仲超张彦学张宇霆包玉峰李仲璘
Owner BOE TECH GRP CO LTD