Backlight driving power protection method and system, display device and storage medium

A technology for backlight drive and display equipment, applied to static indicators, instruments, etc., can solve problems such as damage to power devices, frequent actions of protection circuits, etc.

Pending Publication Date: 2022-01-28
SHENZHEN SKYWORTH RGB ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solve the problem that the protection circuit in the prior art operates frequently, so that the frequent startup or shutdown of the power device will cause damage to the high-load operation

Method used

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  • Backlight driving power protection method and system, display device and storage medium
  • Backlight driving power protection method and system, display device and storage medium
  • Backlight driving power protection method and system, display device and storage medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Such as figure 1 As shown, this embodiment proposes a power protection method for backlight driving, which is applied to the backlight unit of a display device. This power protection method mainly includes steps:

[0047] Step S100, acquiring the total power value of the backlight unit.

[0048] In a specific process, the backlight unit includes a plurality of light-emitting chips; the total power value of the backlight unit is the sum of the power values ​​of the plurality of light-emitting chips.

[0049] Such as figure 2 As shown, the step S100 specifically includes:

[0050] Step S110, acquiring brightness data of each light-emitting chip.

[0051] In a specific process, the light-emitting chip is driven by the backlight driver chip to emit light, and the backlight driver chip receives the luminance data and drives the corresponding light-emitting chip to emit light. The luminance data is a parameter for controlling the luminous brightness of the light-emitting...

Embodiment 2

[0072] Such as image 3 As shown, on the basis of Embodiment 1 and based on the same inventive concept, the present invention also proposes a backlight driving power protection system, which includes: a power acquisition module 10 , a power comparison module 11 , and a power reduction module 12 . The power acquisition module 10 is used to acquire the total power value of the backlight unit 40 , wherein the backlight unit 40 includes a plurality of light emitting chips 41 . The comparing power module 11 is used for comparing the total power value with a preset power protection value. The power reduction module 12 is used for reducing the brightness of the light-emitting chip 41 when the total power value is greater than the preset power protection value, so that the total power value of the backlight unit is below the preset power protection value.

[0073] Through the above scheme, a power protection value is preset, and the power protection value is smaller than the protecti...

Embodiment 3

[0075] Such as Figure 4 As shown, on the basis of Embodiment 1, based on the same inventive concept, the present invention also proposes a display device, which includes: a processor 20 (MCU), a backlight driver chip 31 (Mini LED Driver IC), and a backlight unit 40 (Mini LED Light Bar Unit), the backlight unit 40 includes a plurality of light emitting chips 41 (Mini LED). The processor 20 and the backlight driver chip 31 form a backlight driver unit 30 (Mini LED Driver Unit), the processor 20 is connected to the backlight driver chip 31, and is used to obtain the total power value of the backlight unit 40 and compare the total The size of the power value and the preset power protection value. The backlight driver chip 31 is connected to the backlight unit 40, and is used for reducing the brightness of the light-emitting chip 41 when the total power value is greater than a preset power protection value, wherein the brightness of the light-emitting chip 41 is positive to the t...

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PUM

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Abstract

The invention discloses a backlight driving power protection method and system, a display device and a storage medium. The power protection method comprises the following steps of: acquiring a total power value of a backlight unit which comprises a plurality of light-emitting chips; comparing the total power value with a preset power protection value; and when the total power value is greater than the preset power protection value, reducing the brightness of the light-emitting chips, so as to make the total power value of the backlight unit less than the preset power protection value. The problem that in the prior art, a protection circuit acts frequently, so that a power device is started or closed frequently, high-load operation is caused, and damage is caused is solved.

Description

technical field [0001] The present invention relates to the technical field of display devices, in particular to a power protection method and system for backlight driving, a display device and a storage medium. Background technique [0002] At present, the existing backlight drive circuit and power supply have power protection. The power protection is a passive protection. The working principle of the passive protection is to detect the total power of the backlight drive. When the total power reaches the protection threshold, the protection circuit is triggered. The circuit shuts off the power supply of the entire light-emitting unit, so as to avoid damage to components due to excessive power. However, during the use of the display device, the total power is frequently too large, which will lead to frequent actions of the protection circuit, so that the power devices (such as light-emitting unit driver chips, light-emitting chips, etc.) Damage occurs, which in turn affects...

Claims

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Application Information

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IPC IPC(8): G09G3/34
CPCG09G3/3406G09G3/3413
Inventor 盘桥富周建华胡向峰黄德强杨文祥
Owner SHENZHEN SKYWORTH RGB ELECTRONICS CO LTD
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