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LED backlight module, display device and LED backlight driving method

A backlight module, LED light string technology, applied in optics, nonlinear optics, static indicators, etc., can solve problems such as ineffectiveness, and achieve the effect of reducing power consumption

Active Publication Date: 2018-06-29
KUSN INFOVISION OPTOELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the development of network information technology, more and more people choose to read books and materials on electronic devices. Some energy-saving mechanisms will not work for such high-contrast and single-color pictures.

Method used

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  • LED backlight module, display device and LED backlight driving method
  • LED backlight module, display device and LED backlight driving method
  • LED backlight module, display device and LED backlight driving method

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Embodiment Construction

[0022] Hereinafter, various embodiments of the present invention will be described in more detail with reference to the accompanying drawings. In the various drawings, the same elements are represented by the same or similar reference numerals. For the sake of clarity, the various parts in the drawings are not drawn to scale.

[0023] The present invention can be presented in various forms, some examples of which will be described below.

[0024] figure 1 Shows a schematic circuit diagram of an LED backlight module according to an embodiment of the present invention. Such as figure 1 As shown, the LED backlight module includes a plurality of LED light strings A1-An and B1-Bn arranged in parallel and a control circuit 10.

[0025] The LED light string includes a first LED light string A1-An and a second LED light string B1-Bn.

[0026] In this embodiment, the first LED light string A1-An is a low color gamut LED light string, and the second LED light string B1-Bn is a high color gamu...

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PUM

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Abstract

The invention discloses an LED (Light Emitting Diode) back light module, which comprises a plurality of LED lamp strings in parallel arrangement and a control circuit, wherein each LED lamp string comprises a plurality of first LED lamp strings and a plurality of second LED lamp strings; the control circuit is used for sending control signals to the LED lamp strings; the control signals include a first control signal and a second control signal; the plurality of first LED lamp strings are connected with the control circuit through at least one first field effect transistor; and the plurality of second LED lamp strings are connected with the control circuit through at least one second field effect transistor. The invention also provides a display device and an LED back light driving method. By controlling two kinds of different LEDs (high-color-range LEDs and low-color-range LEDs) to respectively drive the back light under different conditions, the power consumption is reduced; and meanwhile, a Tcon algorithm and the self features of the back light are not influenced.

Description

Technical field [0001] The invention belongs to the field of display testing, and more specifically, relates to an LED backlight module, a display device and an LED backlight driving method. Background technique [0002] The liquid crystal display device includes a liquid crystal display panel and a backlight module. The light source used in liquid crystal display comes from the backlight module, but the utilization rate of the backlight module is generally less than 10%, so the main power consumption part of the liquid crystal module is the backlight module, and the power saving of the backlight module becomes the liquid crystal display device An important direction to reduce power consumption. [0003] Traditional technologies used to reduce backlight power consumption include: optimizing backlight utilization (optical film optimization), CABC, DBC, and so on. These technologies have mature and effective advantages, and have significant effects on watching videos and other brig...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/34
CPCG02F1/133603G09G3/3406G09G3/3413
Inventor 张大雷阮永鑫刘洪海穆兰
Owner KUSN INFOVISION OPTOELECTRONICS
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