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Backlight driving method for display

A backlight drive and display technology, which is applied in the drive field, can solve problems such as display intermodulation interference, and achieve the effect of improving afterimages

Pending Publication Date: 2021-09-28
MACROBLOCK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, if the light-emitting diodes of the backlight module are divided into multiple groups of light-emitting diodes, each group of light-emitting diodes has its own driving unit, and each driving unit only emits light to the corresponding group of LEDs at the same time according to a synchronous control signal. The diodes have their own brightness control, which, in turn, will cause intermodulation interference on the display, causing the viewer to see the picture in the form of stripes
Therefore, there is still room for improvement in the backlight driving methods of existing displays

Method used

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  • Backlight driving method for display

Examples

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Embodiment Construction

[0030] refer to figure 1 , depicting some components of a display. The display is a scanning display and is used for displaying dynamic images (that is, supporting a Dynamic frame rate of a dynamic source). The display includes a backlight module 1, a control module 2, a driving module 3, a liquid crystal display panel (not shown) and other necessary components (not shown). The driving module 3 is used to implement an embodiment of the display backlight driving method of the present invention, so as to drive the backlight module 1 to emit light row by row.

[0031] The backlight module 1 includes eight switches 11 - 18 (this is an example for this embodiment, but the number of switches is not limited thereto) and a light emitting diode (Light Emitting Diode, LED) array 19 including a plurality of light emitting diodes 190 . In this embodiment, the switches 11-18 are divided into a first group of switches 11-14, and a second group of switches 15-18. The LED array 19 is divid...

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Abstract

The invention relates to a backlight driving method for a display, which is executed by a driving module with a predetermined frequency signal of the display so as to drive a backlight module comprising a light emitting diode array of the display to emit light line by line. The backlight driving method of the display comprises the following steps: (A) generating a plurality of switching signals which are delayed in sequence according to an internal synchronous control signal which is updated relative to an image displayed by the display, the preset frequency signal and a delay instruction in a serial input signal with a plurality of delay instructions and an image stream; (B) generating a delayed driving signal output according to the serial input signal and the internal synchronous control signal; and (C) outputting and transmitting the switching signal and the driving signal to the backlight module, so that the backlight module emits light line by line.

Description

technical field [0001] The invention relates to a driving method, in particular to a backlight driving method of a display. Background technique [0002] The image display of the existing display is to control the twisting of the corresponding liquid crystal molecules by transmitting the image signal through the data line (Data Line), and cooperate with the color filter layer to provide the filtering effect, so as to realize the full-color display of the image. Among them, the liquid crystal molecule torsion response time has its limit, and when the display is displaying images, a plurality of light-emitting diodes in a backlight module of the display all continue to emit light together, resulting in the display of dynamic images. The screen has an afterimage problem. [0003] In order to solve this problem, the backlight driving method of the existing display is adjusted to turn off the backlight module (that is, the display screen is inserted into black frame by frame) ev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/34G09G3/32
CPCG09G3/3406G09G3/3413G09G3/32G09G2320/0626G09G2310/024G09G2330/06G09G3/342
Inventor 吴易达李俊亿
Owner MACROBLOCK INC