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A display device and its driving method

A technology for a display device and a backlight drive circuit, which is applied to static indicators, instruments, etc., can solve the problems of large maximum current and inability of the display to display, and achieve the effect of protection from damage

Active Publication Date: 2020-12-01
SHANGHAI AVIC OPTOELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If it is turned on at high temperature, the maximum current of the backlight may be greater than the self-protection current, causing the backlight to stop working due to self-protection, so the backlight will not be lit at this time, and the display will not be able to realize the display function

Method used

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  • A display device and its driving method
  • A display device and its driving method
  • A display device and its driving method

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Embodiment Construction

[0033] The specific implementation manners of a display device and its driving method provided by the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the described embodiments are only some of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0034] An embodiment of the present invention provides a display device, such as figure 1 The schematic structural diagram of the display device shown may include: a driving main board 30, a backlight driving circuit 40, a backlight control circuit 20, a backlight source 50, and a temperature detection module 10;

[0035] The temperature detection module 10 is electrically connected to the backlight control circuit...

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Abstract

The invention discloses a display device and a driving method thereof, and relates to the technical field of display. In the device, the current temperature of the display device can be detected through the temperature detection module. A detection result is sent to a backlight control circuit. The backlight control circuit can judge whether the current temperature is greater than a preset temperature threshold value or not according to the detection result, if yes, it is indicated that the display device is in a high-temperature state currently, and a second A temperature detection signal issent to a driving mainboard. Therefore, the driving mainboard controls the backlight driving circuit to apply voltage to a backlight source step by step, and interference of inrush is dispersed. The situation that the maximum current in the backlight source is larger than the self-protection current is avoided, and therefore it is guaranteed that the backlight source can still be normally lightened when the display device is at the high temperature, and then it is guaranteed that the display device can still achieve the display function at the high temperature.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a display device and a driving method thereof. Background technique [0002] A liquid crystal display is a non-self-luminous device, which needs a backlight module to provide a backlight to realize the display function. In addition, the backlight module generally includes a backlight drive circuit and a backlight source. The drive main board can control the backlight drive circuit to supply voltage to the backlight source according to customer requirements, and light the backlight source to cooperate with the liquid crystal display panel to realize the display function. [0003] During the lighting process of the backlight (hereinafter referred to as the start-up process), the current in the backlight will increase instantaneously due to the existence of inrush (fluctuating) current. Self-protection current, so the backlight can be lighted smoothly. If it is turned on at high ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/34
CPCG09G3/3406
Inventor 魏朝黄正园丁晓源王徐鹏刘常超
Owner SHANGHAI AVIC OPTOELECTRONICS