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A backlight module, its manufacturing method and display device

A technology for a backlight module and a manufacturing method, which is applied in the identification device, optics, nonlinear optics, etc., can solve the problems of color shift of a direct-type backlight module and the like

Active Publication Date: 2021-01-22
HEFEI BOE OPTOELECTRONICS TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, in backlight modules with high-density Mini-LEDs, there will be obvious color shift when using prisms and other components that have the effect of recycling light beams, especially the color shift of direct-lit backlight modules is more serious

Method used

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  • A backlight module, its manufacturing method and display device
  • A backlight module, its manufacturing method and display device
  • A backlight module, its manufacturing method and display device

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Embodiment Construction

[0042] Aiming at the problem of serious color shift in the direct type backlight module in the prior art, the embodiments of the present invention provide a backlight module, a manufacturing method thereof, and a display device.

[0043] The specific implementation manners of the backlight module provided by the embodiments of the present invention, its manufacturing method and the display device will be described in detail below with reference to the accompanying drawings. The thickness and shape of each film layer in the drawings do not reflect the real scale, and the purpose is only to illustrate the content of the present invention.

[0044] In the prior art, light emitting diodes (Light Emitting Diode, LED) are generally used as the backlight source in the backlight module. The light emitted by the light emitting diode chip excites the phosphor to obtain light of a specific color. The red light and the green light obtained by exciting the yellow phosphor with colored ligh...

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PUM

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Abstract

The invention discloses a backlight module, a manufacturing method thereof and a display method. The backlight module comprises a plurality of backlight sources, prisms and gap structures, wherein theprisms are located on one sides of the light out surfaces of the backlight sources, and the gap structures are located between the light out surfaces of the prisms and the backlight sources; each gapstructure comprises an optical substrate and a plurality of gaps which penetrate through the optical substrate; the included angles of the gaps and the surfaces of the substrates are acute angles which are larger than the preset threshold values. The gap structures are arranged between the light out surfaces of the prisms and the backlight sources, the gap structures have a plurality of gaps which penetrate through the optical substrates, the light rays from the prisms back to the backlight sources are reduced, the fluorescent powder in the backlight sources can be prevented from being stimulated for the second time, and the colour cast phenomenon of the backlight module is relieved accordingly.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a backlight module, its manufacturing method and a display device. Background technique [0002] With the development of light emitting diode (Light Emitting Diode, LED), micro light emitting diode (Micro-LED) has attracted much attention due to its advantages of high brightness, high resolution and long life. With the increasing application of Mini-LED products Extensively, there are more and more Mini-LED-based product designs, such as high-brightness backlights, local dimming (HDR) backlights, etc. In order to improve the experience of using especially small-sized products, the design density of Mini-LED is getting higher and higher. [0003] However, in backlight modules with high-density Mini-LEDs, there will be obvious color shift when using prisms and other components that have the effect of recycling light beams, especially the color shift of direct-lit backlight module...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09F9/00G02F1/13357
CPCG02F1/133606G09F9/00
Inventor 许军
Owner HEFEI BOE OPTOELECTRONICS TECH
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