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Light modulation method and system and television of bottom lighting LED (Light-Emitting Diode) back light module group

A backlight module, direct type technology, applied in the direction of TV, color TV, color TV components, etc., can solve the problems of wasting system resources and increasing design costs, simplifying design, saving design and operating costs, and improving image quality. The effect of quality and contrast

Inactive Publication Date: 2012-05-30
GUANGZHOU SKYWORTH PLANE DISPLAY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the embodiments of the present invention is to provide a dimming method for a direct-lit LED backlight module, aiming at solving the problem of dimming the picture in the cinema mode with the ordinary direct-lit LED backlight dimming method, and the black area is not as ideal. The average dimming of the background area of ​​the screen wastes system resources and increases the design cost.

Method used

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  • Light modulation method and system and television of bottom lighting LED (Light-Emitting Diode) back light module group
  • Light modulation method and system and television of bottom lighting LED (Light-Emitting Diode) back light module group
  • Light modulation method and system and television of bottom lighting LED (Light-Emitting Diode) back light module group

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Embodiment 1

[0033] see figure 1 , an embodiment of the present invention provides a method for dimming a direct-lit LED backlight module, the method comprising the following steps:

[0034] S101: Divide the backlight area into several sub-areas in advance;

[0035] S102: Perform non-uniform block-by-block dimming on the LEDs in each divided sub-area.

[0036] In the embodiment of the present invention, the backlight area is divided into several sub-areas in advance; the LEDs in each divided sub-area are adjusted unevenly and block-by-block as required, which can be applied to the theater mode to perform uneven distribution as required. Block dimming, so as to achieve complete black field display in black areas, improve image quality and contrast, simplify the design of dimming circuits, and save design and operating costs.

[0037] see figure 2 , in one embodiment of the present invention, step S101 is specifically:

[0038] S201: Divide the backlight area in advance into a central a...

Embodiment 2

[0055] Please refer to 5, an embodiment of the present invention provides a dimming system for a direct-lit LED backlight module, the system includes:

[0056] The first setting module 501 is used to divide the backlight area into several sub-areas in advance;

[0057] The dimming module 502 is configured to perform non-uniform block-by-block dimming on the LEDs in each divided sub-area.

[0058] In the embodiment of the present invention, the backlight area is divided into several sub-areas in advance; the LEDs in each of the divided sub-areas are unevenly dimmed according to the needs, which can be applied in the theater mode to perform different dimming according to the needs. Uniform block dimming, so as to achieve complete black field display in black areas, improve image quality and contrast, simplify the design of dimming circuits, and save design and operating costs.

[0059] In one embodiment of the present invention, the first setting module 501 is specifically used...

Embodiment 3

[0072] An embodiment of the present invention provides a TV set, which includes the above-mentioned dimming system for a direct-lit LED backlight module.

[0073] The dimming method, system and TV set of the direct-type LED backlight module of the present invention divide the backlight area into several sub-areas in advance; carry out non-uniform block-by-block dimming to the LEDs in each divided sub-area as required, and can It is applied in theater mode to perform uneven block dimming according to needs, so as to realize complete black field display in black areas, improve image quality and contrast, simplify the design of dimming circuits, and save design and operating costs.

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Abstract

The invention provides light modulation method and system and a television of a bottom lighting LED (Light-Emitting Diode) back light module group, which is applicable to the field of light modulation. The method comprises the following steps of: dividing a back light region into a plurality of sub regions in advance; and carrying out non-uniform blocking light modulation on LEDs in each divided sub region. Through dividing the back light region into a plurality of sub regions in advance and carrying out non-uniform blocking light modulation on the LEDs in each divided sub region according tothe requirements, the light modulation method and system and the television of the bottom lighting LED back light module group can be applied in a theatre mode for realizing the non-uniform blocking light modulation according to the requirement, so the complete block field display of the black region can be realized, the image quality and the contrast can be improved, the design of a light modulation circuit can be simplified, and the design and the operation cost can be saved.

Description

technical field [0001] The invention belongs to the field of modules, and in particular relates to a dimming method, a system and a television set of a direct-type LED backlight module. Background technique [0002] At present, the direct-lit LED backlight module not only has a large space, is convenient for arranging more LED units, but also facilitates heat dissipation, and supports regional dimming technology, which has a very obvious effect on improving the dynamic contrast of the picture, so it has been more and more popular. Wide range of applications. [0003] In the prior art, the ordinary direct-lit LED backlight module dimming method divides all the LEDs into several blocks of the same size according to the arrangement of the LEDs and the capability of the driver IC for block-by-block dimming. Dimming method, which can communicate with the driver of the system, and dim the block according to the required brightness of the transmitted picture, but especially for th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/34H04N5/64
Inventor 王永博何凤娟
Owner GUANGZHOU SKYWORTH PLANE DISPLAY TECH