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Dot matrix backlight driving method, device and system

A driving method and a technology of a driving device, which are applied to instruments, static indicators, etc., can solve problems such as high power consumption and energy waste, and achieve the effects of reducing power consumption, avoiding power loss and energy waste, and achieving the best display effect

Active Publication Date: 2018-02-13
SHENZHEN TCL DIGITAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The main purpose of the present invention is to provide a dot-matrix backlight driving method, device and system, aiming to solve the technical problems of high power consumption and energy waste caused by the current dot-matrix backlight to ensure the picture quality

Method used

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  • Dot matrix backlight driving method, device and system

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Embodiment Construction

[0076] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0077] The main solution of the embodiment of the present invention is: according to the input TV signal, calculate and obtain the pulse width modulation PWM data of each light-emitting diode LED lamp in the dot-matrix backlight; according to the PWM data, make a statistical histogram, and according to The statistical histogram is calculated to obtain the current parameters for controlling the LED lamps; the LED lamps are independently controlled according to the PWM data and the current parameters, and the dot matrix backlight is driven.

[0078] Due to the unified control of the current in the prior art, if the brightness of the picture is guaranteed, it will cause high power consumption and a large waste of energy; and when the power is reduced, the quality of the TV picture will be poor, which will affect the viewi...

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Abstract

A lattice backlight source driving method and device. The method comprises: on the basis of input television signals, calculating the pulse width modulation (PWM) data controlling each light emitting diode (LED) lamp in the lattice backlight source (S10); on the basis of the PWM data, creating a statistical histogram, and on the basis of the statistical histogram, calculating the current parameter controlling each LED lamp (S20); and according to the PWM data and the current parameters, independently controlling each LED lamp and driving the lattice backlight source (S30). The invention achieves on-demand current distribution to all the LED lamps of the lattice backlight source, thereby reducing power consumption while optimizing the whole display effect, and avoiding power loss and energy waste.

Description

technical field [0001] The present invention relates to the technical field of dot matrix backlight driving, in particular to a dot matrix backlight driving method, device and system. Background technique [0002] With the needs of users and the development of backlight technology, liquid crystal display has rapidly replaced the traditional cathode ray tube display technology in many fields, making LCD (Liquid Crystal Display, liquid crystal display) display screens become the leading products in the home appliance market. [0003] Many current LCD flat panel TVs use LED (Light Emitting Diode, Light Emitting Diode) dot matrix light sources. LED dot-matrix backlight has the advantages of good color reproduction, power saving, and long life, and gradually replaces the traditional side-entry light source deployed with single-sided or double-sided light strips. For TV sets of different sizes, through the deployment and scheme design of a reasonable number of dot matrix light so...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/34G09G3/36
CPCG09G3/3406G09G3/36G09G3/34
Inventor 段平
Owner SHENZHEN TCL DIGITAL TECH CO LTD