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Backlight module and display device

A backlight module and backlight technology, applied in light guides, optics, optical components, etc., can solve the problems of cost waste, long verification and adjustment cycle, etc., achieve the effect of short adjustment cycle, low cost, and alleviate the polarization phenomenon

Inactive Publication Date: 2017-08-29
HEFEI BOE DISPLAY LIGHT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the prior art, the chromatic aberration is adjusted by adjusting the band control of the blue light chip of the LED backlight itself and the ratio of phosphor powder. This verification adjustment period is long, and if the blue light chip is selected for matching use, it will cost a lot waste of

Method used

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  • Backlight module and display device

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Experimental program
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Effect test

Embodiment approach 1

[0049] Implementation Mode 1: Refer to figure 2 , the above-mentioned optical structure is a substrate 151;

[0050] Along the direction away from the backlight 12 , the thickness of the substrate 151 gradually increases.

[0051] In specific implementation, when making the above-mentioned base material 151, the pigment 14 of specific color can be added in the material of making the above-mentioned base material 151, for example, the material of making the above-mentioned base material 151 is preferably a transparent material, for example, polyterephthalic acid can be used Ethylene glycol ester (Polyethylene terephthalate, PET), specifically, a pigment 14 of a specific color can be added during the melting process of the PET particles, and the pigment 14 is evenly distributed in the PET material by stirring, and then the PET material is extruded and stretched into a roll The material is used for the subsequent mass production of the base material 151.

[0052] Setting the t...

Embodiment approach 2

[0053] Implementation mode two: refer to Figure 4 , the above-mentioned optical structure is a diffusion film 152;

[0054] Along the direction away from the backlight 12 , the thickness of the diffusion film 152 increases gradually.

[0055] In practice, when making the above-mentioned diffusion film 152, it is enough to evenly distribute the pigment 14 of a specific color in the material for making the diffusion film 152, and it is relatively easy to realize that the content of the pigment 14 is getting higher and higher along the direction away from the backlight 12. .

[0056] When the above-mentioned optical structure is the diffusion film 152, the thickness of the diffusion film 152 is set to gradually increase along the direction away from the backlight 12, so that the content of the pigment 14 can be more easily realized along the direction away from the backlight 12. The higher it is, the non-white light emitted from the light guide plate 11 can be mixed with the p...

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Abstract

The invention discloses a backlight module and a display device. The backlight module comprises a light guide plate, a backlight source located on the side face of the light guide plate and an optical structure located on one side of a light outlet face of the light guide plate; pigment with specific color is arranged in the optical structure; in the direction away from the light source, the content of the pigment in the optical structure becomes higher and higher. Light polarization becomes more serious along with increase of the distance from the backlight module to the backlight source in the prior art, the pigment with the specific color is added into the optical structure at one side of the light outlet face of the light guide plate, the content of the pigment in the optical structure becomes higher and higher in the direction away from the backlight source, light emitted by the backlight source passes through the light guide plate and is mixed with color of the pigment in the optical structure into white light, and the light polarization phenomenon of the backlight module is relieved, new polarization due to the pigment is avoided, the adjusting period is short, and cost is low.

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] With the continuous development of display technology, liquid crystal display devices have been widely used in electronic products such as smart phones, tablet computers, notebooks, monitors, and televisions. However, since the liquid crystal panel itself does not have the function of emitting light, it is usually necessary to use a backlight as a light source to realize the display function. With the continuous improvement of consumers' requirements for the image quality of products such as TVs and mobile phones, the technical requirements for backlight modules are also continuously improved. [0003] The light guide plate is one of the key components of the backlight module. During the injection molding process, the light guide plate melts the plastic raw material and injects it into the cavity at high spe...

Claims

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Application Information

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IPC IPC(8): G02F1/13357G02B6/00
CPCG02B6/005G02B6/0058G02F1/133615
Inventor 张晓初
Owner HEFEI BOE DISPLAY LIGHT
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