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Source drive chip anomaly detection circuit and anomaly detection method thereof

A source driver chip and anomaly detection technology, applied to instruments, static indicators, etc., can solve problems such as high current, source driver chip damage, smoke, etc.

Pending Publication Date: 2020-06-23
SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present application provides a source driver chip abnormal detection circuit and its abnormal detection method, which can solve the problem that in the prior art, the static electricity discharge path in the process of driving and displaying the display panel needs to pass through the source driver chip, which may cause the source The driver chip is damaged. If the source driver chip is damaged to a large extent, a large current will occur, and heat will accumulate, causing technical problems such as fire or smoke.

Method used

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  • Source drive chip anomaly detection circuit and anomaly detection method thereof
  • Source drive chip anomaly detection circuit and anomaly detection method thereof
  • Source drive chip anomaly detection circuit and anomaly detection method thereof

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Embodiment Construction

[0028] The following descriptions of the various embodiments refer to the accompanying drawings to illustrate specific embodiments in which the invention may be practiced. The directional terms mentioned in the present invention, such as [up], [down], [front], [rear], [left], [right], [inner], [outer], [side], etc., are only for reference Additional schema orientation. Therefore, the directional terms used are for describing and understanding the present invention, not for limiting the present invention. In the figures, units with similar structures are denoted by the same reference numerals, and the dotted lines in the figures indicate that they do not exist in the structures, and only illustrate the shapes and positions of the structures.

[0029] According to the present invention, the discharge path of static electricity in the process of driving and displaying the display panel in the prior art needs to pass through the source driver chip, which may cause damage to the s...

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Abstract

The invention provides a source drive chip anomaly detection circuit and an anomaly detection method thereof. A mirror current source detection power supply module in a source driving chip provides anelectric signal to an input port through a flexible flat cable and transmits the electric signal to a digital-to-analog conversion module in the source driving chip, and the digital-to-analog conversion module converts the electric signal into a digital signal and transmits the digital signal to a TCON chip; the TCON chip is used for comparing the digital signal with a preset threshold value; andif the digital signal is greater than the preset threshold value, determining that the source driving chip is abnormal, stopping supplying power to the source driving chip by the power supply module,or sending alarm information by the TCON chip, thereby solving the technical problem that the source driving chip is easy to damage due to large current and accumulated heat.

Description

technical field [0001] The invention relates to the technical field of display device manufacturing, and in particular, to a source driver chip abnormality detection circuit and an abnormality detection method thereof. Background technique [0002] In recent years, with the increasing maturity of optoelectronic technology and semiconductor manufacturing technology, display devices have flourished. A display device that utilizes the characteristics of display materials to display images, with the advantages of low voltage operation, no radiation scattering, light weight and small size, has gradually replaced the traditional cathode ray tube display device and has become the most popular display device product in recent years. mainstream. [0003] Generally, the driving method of the large-size display panel of the display device is to transmit the control signal of the control circuit board to the two connected driving circuit boards through the connector and the flexible fl...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/00
CPCG09G3/006
Inventor 张先明
Owner SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD