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Backlight module and display device

A backlight module and white light technology, which is applied in optics, nonlinear optics, static indicators, etc., can solve problems such as brightness differences, uneven brightness of backlight modules, and affecting display effects, so as to reduce brightness differences and improve display Effect, the effect of uniform luminous brightness

Active Publication Date: 2019-01-08
XIAMEN TIANMA MICRO ELECTRONICS
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Problems solved by technology

[0003] However, due to the difference in light concentration, there is a difference in brightness between the edge area and the middle area of ​​the LED substrate, resulting in uneven luminance of the entire backlight module and affecting the display effect.

Method used

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  • Backlight module and display device

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Embodiment Construction

[0020] The specific implementation manners of a backlight module and a display device provided by the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the described embodiments are only some of the embodiments of the present invention, but not all of the embodiments. 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.

[0021] The inventor found in the research that in order to improve the display effect of the liquid crystal display, the LED substrate in the backlight module can usually be partitioned, that is, the LED substrate is divided into multiple dimming areas, and each dimming area includes 3×3 Each LED chip, or 6×6 LED chips, achieves a high dynamic range screen effect and a more delicate display image through regional di...

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Abstract

The invention discloses a backlight module and a display device and relates to the technical field of display. In the embodiment of the present invention, a dimming area is divided into a compensationdimming area and a normal dimming area, wherein the compensation dimming area is disposed near an edge area of an LED substrate, and the normal dimming area is disposed away from the edge area; moreover, in a white light test phase, the brightness of the compensation dimming area is the same as the brightness of the normal dimming area, and the number of LED chips included in the compensation dimming area is smaller than the number of the LED chips included in the normal dimming area; thus, the brightness of each dimming area can be ensured to be uniform in the test phase, thereby reducing brightness difference between the edge area and the middle area; therefore, improvement of the display effect of a liquid crystal display screen is facilitated in the practical display process.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a backlight module and a display device. Background technique [0002] A liquid crystal display is a non-self-illuminating device, which requires a backlight module to provide a backlight to realize the display function. At present, LED substrates with a plurality of mini LED chips arranged in an array are mostly used to form a backlight module. This kind of backlight module can make the liquid crystal display screen have a high dynamic range screen effect, and the display screen is more delicate, etc. features. [0003] However, due to the difference in light concentration, there is a difference in brightness between the edge area and the middle area of ​​the LED substrate, resulting in uneven luminance of the entire backlight module and affecting the display effect. Then, how to reduce this difference and improve the display effect is a technical problem to be solved urgentl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13357G09G3/34
CPCG02F1/133603G09G3/3406G09G3/3413
Inventor 柯思超邓卓
Owner XIAMEN TIANMA MICRO ELECTRONICS
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