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Driving chip protection circuit, circuit board and display device

A technology for driving chips and protecting circuits, applied in static indicators, instruments, etc., can solve problems such as temperature rise, burnout of driver chips and display screens, etc., and achieve the effect of preventing over-temperature damage and preventing damage.

Pending Publication Date: 2022-04-12
MIANYANG HKC OPTOELECTRONICS TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Among large-size panels, TFT-LCD (Thin film transistor liquid crystal display) display technology has become the mainstream display technology at present. The temperature of the driver chip will rise in some cases, which may burn the driver chip and the display

Method used

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  • Driving chip protection circuit, circuit board and display device
  • Driving chip protection circuit, circuit board and display device
  • Driving chip protection circuit, circuit board and display device

Examples

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Comparison scheme
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Embodiment 1

[0040] The embodiment of the present disclosure discloses a driving chip protection circuit, which is used to prevent the driving chip 1000 from being damaged due to overheating. Such as figure 1 and figure 2 As shown, the driver chip protection circuit includes a power supply voltage input terminal 1100, a power supply voltage output terminal 1200, a temperature sensing element 100, a first switch 200 and a trigger protection module, and the power supply voltage output terminal 1200 is configured to be connected to the working module 1300 of the driver chip 1000 The working module 1300 can be a gamma (gamma) voltage module in the driver chip 1000, and the gamma voltage module is used to control the grayscale display of the display screen.

[0041] Wherein, the temperature sensing element 100 is used to obtain the temperature information of the driving chip 1000, the first switch 200 is connected between the power supply voltage input terminal 1100 and the power supply volta...

Embodiment 2

[0067] Based on the driver chip protection circuit mentioned above, such as image 3 , Figure 4 and Figure 5 As shown, Embodiment 2 of the present disclosure discloses a circuit board, including a circuit substrate 900 and a driver chip 1000 disposed on the circuit substrate 900. The driver chip 1000 is connected with a driver chip protection circuit for protecting the driver chip 1000 from Over-temperature damage, wherein the circuit substrate 900 may be a flexible circuit board or a rigid circuit board.

[0068] The temperature sensing element 100 is arranged on the side of the circuit substrate 900 away from the driving chip 1000, and is opposite to the driving chip 1000, so as to sense the temperature information of the driving chip 1000, and the temperature sensing element 100 and the driving chip 1000 are respectively arranged on the side of the circuit substrate. On both sides, it is easier to install. During the installation process, avoid direct contact with the d...

Embodiment 3

[0070] Based on the circuit board mentioned above, Embodiment 3 of the present disclosure discloses a display device, including a display panel and a circuit board. Over-temperature damage, thereby protecting circuit boards and display devices.

[0071] The display panel may be a liquid crystal display panel, capable of modulating light transmittance, but not emitting light itself. The display panel has a plurality of pixel units arranged in an array, and each pixel unit can independently control the light transmittance and color of the backlight module incident on the pixel unit, so that the light transmitted by all the pixel units constitutes a displayed image.

[0072] In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly inclu...

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Abstract

The invention relates to a driving chip protection circuit, a circuit board and a display device. The driving chip protection circuit comprises a power supply voltage input end and a power supply voltage output end, wherein the power supply voltage output end is configured to be connected with a working module of a driving chip; the circuit further comprises a temperature sensing element used for obtaining temperature information of the driving chip; the first switch is connected between the power supply voltage input end and the power supply voltage output end; the input end of the trigger protection module is connected with the temperature sensing element, the output end of the trigger protection module is connected with the first switch, and the trigger protection module is used for controlling the first switch to be switched on or switched off according to the temperature information obtained by the temperature sensing element. According to the scheme, temperature protection can be carried out on the driving chip, and over-temperature damage of the driving chip is prevented.

Description

technical field [0001] The present application belongs to the field of display technology, and in particular relates to a driving chip protection circuit, a circuit board and a display device. Background technique [0002] Among large-size panels, TFT-LCD (Thin film transistor liquid crystal display) display technology has become the mainstream display technology at present. The temperature of the driver chip will rise under certain circumstances, which may burn the driver chip and the display. Contents of the invention [0003] The purpose of the present disclosure is to provide a driving chip protection circuit, a circuit board and a display device, which can protect the driving chip from over-temperature damage. [0004] The first aspect of the present disclosure discloses a driver chip protection circuit, including a power supply voltage input terminal and a power supply voltage output terminal, and the power supply voltage output terminal is configured to be connecte...

Claims

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Application Information

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IPC IPC(8): G02F1/133G09G3/36
Inventor 周仁杰樊涛康报虹
Owner MIANYANG HKC OPTOELECTRONICS TECH CO LTD
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