Backlight module and display device

A backlight module, white light technology, applied in the direction of light guide, optics, optical components, etc., can solve the problems of reduced color filter transmittance, luminous flux loss, energy loss, etc.

Active Publication Date: 2017-02-22
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Improving the color gamut of TFT LCD products can increase the thickness of the color film and use LEDs with a higher color gamut. However, when the color gamut of the product is improved, the brightness of the backlight will decrease, and the transmittance of the color film will also decrease, resulting in increased panel power consumption.
As in the common backlight module structure, such as figure 1 As shown, the quantum dot film 01 is used to improve the color gamut of the product, but in the process of converting blue light to white light, due to the loss of excitation energy, the backlight of the product using the quantum dot film is low, and more luminous flux is converted by the quantum dot film and color filter losses

Method used

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  • Backlight module and display device
  • Backlight module and display device

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Embodiment Construction

[0032] The specific implementation manners of the backlight module and the display device provided by the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0033] Wherein, the thickness and shape of each film layer in the drawings do not reflect the real proportion of the backlight module, and the purpose is only to illustrate the content of the present invention.

[0034] An embodiment of the present invention provides a backlight module, such as Figure 2 to Figure 4 As shown, it includes: a light-emitting component 1, a photoluminescence component 2, and a polarization adjustment component 3; wherein,

[0035] The light-emitting component 1 is used to provide a backlight; the light-emitting component 1 is divided into a plurality of first sub-regions; the light-emitting brightness of each first sub-region is different;

[0036] The photoluminescent component 2 is used to emit a variety of monochromatic lig...

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PUM

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Abstract

The invention discloses a backlight module and a display device. The backlight module comprises a light emitting part, a photo-induced light emitting part and a polarization state adjusting part; the light emitting part is used for providing backlight and comprises multiple first subregions, and the light emitting brightness of all the first subregions is different; the photo-induced light emitting part is used for emitting multiple monochromatic lights of which the polarization directions are perpendicular to one another, and the monochromatic lights are compounded into white light to be emitted into the polarization state adjusting part; the polarization state adjusting part is used for adjusting the polarization directions of the monochromatic lights in the white light. According to the backlight module, by means of the combined action of the light emitting part, the photo-induced light emitting part and the polarization state adjusting part, dynamic control over backlight spectra can be achieved, the product color gamut can be widened, and backlight power dissipation can be reduced.

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] In the field of display technology, liquid crystal display panels are widely used in modern digital information equipment due to their advantages of small size, low power consumption, no radiation, and high resolution. [0003] Compared with other display modes (PDP, OLED, etc.), thin film field effect transistor (Thin Film Transistor, TFT) liquid crystal display (Liquid Crystal Display, LCD) is a passive light-emitting mode, using white light-emitting diodes (LEDs) as light sources, resulting in The color gamut of the product is low and the colors are distorted. [0004] Increasing the color gamut of TFT LCD products can increase the thickness of the color film and use LEDs with a higher color gamut. However, when the color gamut of the product is increased, the brightness of the backlight will decrease, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13357
CPCG02F1/1336G02F1/13362G02F1/133614G02F1/133603G02F1/133615G02F1/1347G02F2202/36G02B6/005G02B6/0056G02F1/133528G02F1/133621
Inventor 郭远辉
Owner BOE TECH GRP CO LTD
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