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Driving circuit and driving method, backlight, display device, and lighting device

A technology for driving circuits and power input terminals, which can be applied to static indicators, instruments, etc., and can solve the problems of complex adjustment methods and difficult control.

Active Publication Date: 2018-11-13
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] This adjustment method is relatively complex and difficult to control

Method used

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  • Driving circuit and driving method, backlight, display device, and lighting device
  • Driving circuit and driving method, backlight, display device, and lighting device

Examples

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Embodiment Construction

[0046] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0047] As one aspect of the present invention, a method for driving a light-emitting diode light string is provided, the light-emitting diode light string includes at least one light-emitting diode, wherein the driving method includes:

[0048] Detecting whether the current flowing through the LED light string is consistent with the rated current of the LED light string;

[0049] When the current flowing through the LED light string does not reach the rated current of the LED light string, adjust the resistance in the driving circuit until the current flowing through the LED light string is consistent with the rated current.

[0050] In the method provided by t...

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Abstract

The invention provides a driving method of a light-emitting diode lamp string. The light-emitting diode lamp string comprises at least one light-emitting diode. The driving method includes the steps that whether current flowing across the light-emitting diode lamp string is consistent with the rated current of the light-emitting diode lamp string is detected; when the current flowing across the light-emitting diode lamp string is not consistent with the rated current of the light-emitting diode lamp string, a resistor in the driving circuit is adjusted till the current flowing across the light-emitting diode lamp string is consistent with the rated current of the light-emitting diode lamp string. The invention further provides the driving circuit of the light-emitting diode lamp string, a backlight source comprising the driving circuit, a display device comprising the backlight source and a lighting device comprising the driving circuit. By means of the driving method, the current for driving the light-emitting diode lamp string to emit light can be conveniently adjusted.

Description

technical field [0001] The present invention relates to the field of display, in particular, to a driving method of LED light strings, a driving circuit of LED light strings, a backlight including the driving circuit, a display device including the backlight, and a lighting system including the driving circuit. device. Background technique [0002] Before the backlight is applied to the display device, it is necessary to conduct a lighting test on the backlight. [0003] The usual practice is to connect the backlight to the lighting device, and then adjust the input voltage continuously, so as to achieve the purpose of adjusting the current input to the backlight until the current input to the backlight reaches the rated current of the light-emitting diode of the backlight. . [0004] This adjustment method is relatively complicated and difficult to control. Therefore, how to provide a simple adjustment method has become an urgent technical problem in this field. Conten...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/34
CPCG09G3/3406
Inventor 刘旭忠王成国吴昊张扬李永华刘楠
Owner BOE TECH GRP CO LTD
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