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Backlight module, display device and backlight color temperature adjusting method

A backlight module and backlight technology, applied in optics, nonlinear optics, instruments, etc., can solve problems such as the reduction of display brightness, and achieve the effect of solving the reduction of display brightness.

Pending Publication Date: 2021-05-04
SHENZHEN TCL NEW-TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that, aiming at the defects of the prior art, the present invention provides a backlight module, a display device and a method for adjusting the color temperature of the backlight to solve the technical problem that the display brightness decreases when the color temperature value is adjusted

Method used

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  • Backlight module, display device and backlight color temperature adjusting method
  • Backlight module, display device and backlight color temperature adjusting method
  • Backlight module, display device and backlight color temperature adjusting method

Examples

Experimental program
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Effect test

Embodiment 1

[0025] like Figure 1~3 As shown, a backlight module is provided.

[0026] like figure 1 As shown, in one implementation, a backlight module is provided, including: a diffuser plate 100, an optical film 200, a reflective sheet 300, and a backlight arranged on the reflective sheet 300 for adjusting the color temperature value and the brightness value 400 ; the backlight 400 and the reflection sheet 300 are disposed on the light incident side of the diffuser plate 100 , and the optical film 200 is disposed on the light output side of the diffuser plate 100 to provide incident light to the display screen.

[0027] Specifically, the reflective sheet 300 includes a central reflective area and a plurality of side reflective areas; wherein, a plurality of side reflective areas surround the central reflective area; the central reflective area is used to set the backlight 400, and multiple The multiple side reflective areas form a certain angle with the central reflective area, so as...

Embodiment 2

[0056] like Figure 1~4 As shown, based on the above embodiments, a display device is provided.

[0057] like Figure 4 As shown, a display device is provided, including a front frame 10, a back panel 20, and a backlight module 30 as in Embodiment 1;

[0058] like Figure 1~3 As shown, a backlight module is provided, and the backlight module 30 includes: a diffuser plate 100, an optical film 200, a reflective sheet 300, and a backlight source 400 disposed on the reflective sheet 300 and used to adjust the color temperature value and brightness value; the backlight The source 400 and the reflection sheet 300 are disposed on the light incident side of the diffuser plate 100 , and the optical film 200 is disposed on the light output side of the diffuser plate 100 to provide incident light to the display screen; details are as described above.

[0059] Because the display device in this embodiment includes the backlight module in the above embodiment; therefore, the display dev...

Embodiment 3

[0061] like Figure 5 As shown, based on the above embodiments, a method for adjusting the color temperature of a backlight is provided.

[0062] like Figure 5 As shown, in an implementation manner of the embodiment of the present invention, the backlight color temperature adjustment method includes:

[0063] Step S100, acquiring a target color temperature value, and determining a corresponding adjustment parameter according to the target color temperature value.

[0064] In this embodiment, display devices with different color gamuts can be adjusted by the backlight color temperature adjustment method to achieve the required color temperature value and keep the displayed brightness value unchanged; therefore, before adjusting the color temperature value of the display device, it is necessary to Determine the display color gamut of the display device; wherein, the display color gamut can be understood as a spatial range in which the display device can display colors.

[00...

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PUM

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Abstract

The invention discloses a backlight module, a display device and a backlight color temperature adjusting method. The backlight module comprises a diffusion plate, an optical film, a reflector plate and a backlight source which is arranged on the reflector plate and is used for adjusting a color temperature value and a brightness value; and the backlight source and the reflector plate are arranged on the light inlet side of the diffusion plate, and the optical film is arranged on the light outlet side of the diffusion plate so as to provide incident light for the display screen. According to the invention, the backlight source used for adjusting the color temperature value and the brightness value is arranged, the current value proportion of the LEDs in the backlight source can be adjusted when the color temperature value of the display device is adjusted, and therefore the brightness of the display device is not changed.

Description

technical field [0001] The invention relates to the application field of display devices, in particular to a backlight module, a display device and a method for adjusting the color temperature of the backlight. Background technique [0002] Color temperature is an important indicator of a display device, which determines the first subjective feeling of people watching a display device; global consumers have different preferences for color temperature, for example: most Asians like a color temperature of about 9000K, and most Americans like D65 (6500K ) color temperature; in addition, when the display device is in a supermarket, a large store, etc., it is easily affected by various lights, and the color temperature of the display device needs to be adjusted higher to achieve a display effect that meets the environment of a supermarket, a large store, etc.; When the display device is used in a home environment, the color temperature needs to be lowered to achieve the effect of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13357
CPCG02F1/133603G02F1/133605G02F1/133606
Inventor 杨敏娜
Owner SHENZHEN TCL NEW-TECH CO LTD
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