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Backlight module, liquid crystal display device and electronic equipment

A liquid crystal display device and backlight module technology, which is applied in optics, nonlinear optics, instruments, etc., can solve the problems of poor Mini-LED uniformity, backlight uniformity, and increased backlight weight, and achieve high light efficiency, high light efficiency and high light efficiency. Uniformity, cost reduction effect

Pending Publication Date: 2020-09-18
SHENZHEN LONGLI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if figure 1 As shown, the conventional side-entry design needs to use the light guide plate 2, although it can effectively improve the uniformity, but the light guide plate not only occupies the space of the backlight, but also increases the weight of the backlight
And due to the poor uniformity of the Mini-LED, it will lead to the uniformity of the backlight guarantee

Method used

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  • Backlight module, liquid crystal display device and electronic equipment
  • Backlight module, liquid crystal display device and electronic equipment
  • Backlight module, liquid crystal display device and electronic equipment

Examples

Experimental program
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Embodiment 1

[0041] This embodiment provides a backlight module, according to Figure 2-5 As shown, the backlight module includes: a backplane 10; a light source part 20 disposed on one side of the backplane, and the light source part 20 has an LED light source; and a reflection part 302 disposed on the other side of the backplane 10 opposite to the light source part 20 On one side, the reflective portion 30 has a reflective surface 32 , and at least part of the surface of the reflective surface 32 is inclined relative to the back plate.

[0042] A hollow light guide structure 100 is formed between the light source part 20 and the reflection part 30 . No light guide plate is provided between the light source part 20 and the reflection part 30, and the hollow light guide structure 100 is filled with gas, such as air or other gases, or a vacuum. Other gases are inert gases. Those skilled in the art should understand that the hollow light guide structure 100 here does not mean that there is...

Embodiment 2

[0064] This embodiment provides a backlight module, the backlight module includes: a backplane 10; a light source part 20, disposed on one side of the backplane, the light source part 20 has an LED light source; and a reflector 302, disposed on the backplane 10 , on the other side opposite to the light source portion 20 , the reflective portion 30 has a reflective surface 32 .

[0065] according to Figure 6A , The difference from Embodiment 1 is that the reflective surface 32 in this embodiment adopts a different configuration. The reflective surface 32 has multiple reflective surfaces, and the reflective surface 32 can be a continuous multiple reflective surface, or a discontinuous multiple reflective surface separately provided.

[0066] Preferably, the reflective surface 32 is a multi-segment continuous reflective surface, preferably, the angle between at least one segment of the reflective surface and the back plate is different from that of other segments of the reflect...

Embodiment 3

[0071] This embodiment provides a backlight module, the backlight module includes: a backplane 10; a light source part 20, disposed on one side of the backplane, the light source part 20 has an LED light source; and a reflector 302, disposed on the backplane 10 , on the other side opposite to the light source portion 20 , the reflective portion 30 has a reflective surface 32 .

[0072] according to Figure 6B , the difference from Embodiment 2 is that the reflective surface 32 in this embodiment adopts a different configuration. The reflective surface 32 is a multi-segment continuous reflective surface, preferably, the angle between at least one segment of the reflective surface and the back plate is different from that of other segments of the reflective surface. And at least one section of the reflective surface is perpendicular to the back plate.

[0073] Preferably, each section of reflective surface is a strip reflective surface 321, 322, 324 arranged parallel to the ba...

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Abstract

The invention relates to the technical field of backlight modules, and provides a backlight module, a liquid crystal display device and electronic equipment. The backlight module comprises a back plate; a light source part which is arranged at one side edge of the back plate and is provided with an LED light source; and a reflecting part which is arranged at the other side edge, opposite to the light source part, of the back plate and provided with a reflecting surface, and at least part of the surface of the reflecting surface is obliquely arranged relative to the back plate. The weight and / or the thickness of the module can be effectively reduced, higher light efficiency is achieved, and meanwhile the problem that a hollow light guide structure is poor in uniformity is solved. Furthermore, the specially designed reflecting part is provided for the LED light source with asymmetric luminous intensity distribution, and the reflecting part and the light source part form a novel optical cavity together, so that higher light efficiency and uniformity are realized. According to the invention, raw materials are saved, and the cost is reduced.

Description

technical field [0001] The invention relates to the technical field of backlight modules, in particular to a backlight module, a liquid crystal display device and electronic equipment. Background technique [0002] Mini-LED light source is a new generation of light source display field. It is favored by people because of its small chip and wide dimming range. The local dimming achieved by it can greatly improve the contrast ratio with relatively low energy consumption. But there are some technical problems in practical application. If it is used in a backlight, there will be a problem of uneven luminescence. [0003] The existing Mini-LED backlight technology is mainly a direct-lit design, which will lead to uneven light. If the Mini-LED is designed as a side-type light-emitting structure, the uniformity of light and the utilization rate of light will be improved. However, if figure 1 As shown, the conventional side-entry design requires the use of the light guide plate ...

Claims

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Application Information

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IPC IPC(8): G02F1/13357
CPCG02F1/133615
Inventor 舒鹏查显超
Owner SHENZHEN LONGLI TECH CO LTD
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