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Backlight module and manufacturing method thereof, and display device

A technology of backlight module and manufacturing method, which is applied in the direction of lighting devices, optics, light sources, etc., can solve problems such as bad stars in the sky, and achieve the effect of eliminating the phenomenon of stars in the sky

Active Publication Date: 2019-01-11
XIAMEN TIANMA MICRO ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention provides a backlight module, a manufacturing method thereof, and a display device, so as to solve the problem of the bad phenomenon of starry sky in the display process of the backlight module in the prior art

Method used

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  • Backlight module and manufacturing method thereof, and display device
  • Backlight module and manufacturing method thereof, and display device
  • Backlight module and manufacturing method thereof, and display device

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Embodiment Construction

[0044] As mentioned in the background technology section, in the prior art, the backlight module formed by Mini LED is prone to starry sky phenomenon during the display process.

[0045] The reason that inventor finds above-mentioned phenomenon occurs is:

[0046] See figure 1 , figure 1 A schematic diagram of the top view structure of a display device provided for the prior art; in the display device 100, there will be a certain distance between adjacent LED chips 02, for example, there is a first gap between two adjacent LED chips 02 in the X direction. The spacing W, and the second spacing L between two adjacent LED chips 02 in the Y direction. See figure 2 , figure 2 for along figure 1 The cross-sectional schematic diagram of the backlight module of the line AA' in the middle; wherein, the LED backlight module includes a PCB board 01, a number of LED chips 02 are arranged on the PCB board 01, a fluorescent film 03 is arranged on the LED chip 02, and the light emitti...

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PUM

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Abstract

The invention relates to a backlight module and a manufacturing method thereof, and a display device. The backlight module comprises a substrate, a plurality of LED chips and a first film, the first film is provided with a plurality of channels, and the channels are filled with channel films, wherein the refractive index of the first film is n1, the refractive index of the channel film is n2, andn2 is greater than n1; since n2 is greater than n1, when the light emitted by the LED chip is transmitted in the channel, total reflection can be generated to form a transmission mode similar to optical waveguide. The channels in a first area are all light dispersion holes; and the channels in a second area are all concentrating holes, so that the light having large light intensity and aligned with the LED chips can be diverged through the light dispersion holes, and the light further away from the LED chips and having small light intensity is concentrated by the concentrating holes, so that the luminous intensity of the position aligned to the LED chips is equivalent to the luminous intensity between the adjacent LED chips, thereby weakening or eliminating the babysbreath phenomenon.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a backlight module, a manufacturing method thereof, and a display device. Background technique [0002] With the development of LED (Light-Emitting Diode, light-emitting diode) technology, the size of the LED light source used in the backlight module is getting smaller and smaller, and Mini LED is gradually used as the light source in the backlight module. Mini LED is called Micro The predecessor of LED (Micro Light Emitting Diode, Micro Light Emitting Diode), the size is about 50 microns to 300 microns. [0003] Mini LED is an emerging branch of the current display screen. Through this technology, the local dimming (Local Dimming) design of the direct-lit backlight module can be realized, and the screen effect of high dynamic range (HDR) can be achieved, making the picture more delicate. At the same time, it provides a high-brightness surface light source to improve the brigh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13357H05B44/00
CPCG02F1/133603G02F1/133606G02F1/133611G02F1/133607H05B45/10G09G3/32G09G3/3426
Inventor 王海亮郑斌义杨雁吴玲沈柏平
Owner XIAMEN TIANMA MICRO ELECTRONICS