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Data driving module and failure detection method thereof, and display device

A technology for driving modules and detection methods, applied to static indicators, instruments, etc., can solve problems such as failure analysis of unfavorable display substrates

Inactive Publication Date: 2018-05-18
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, considering the volume of the display substrate, the test substrate will be cut and discarded in the subsequent cutting (Cell Cutting) process, but this is not conducive to the failure analysis of the display substrate after manufacture

Method used

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  • Data driving module and failure detection method thereof, and display device
  • Data driving module and failure detection method thereof, and display device
  • Data driving module and failure detection method thereof, and display device

Examples

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Embodiment Construction

[0039] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with aspects of the invention as recited in the appended claims.

[0040] An embodiment of the present invention provides a data driving module, which may include a data driving chip, a driving power supply and related components. figure 1 It is a schematic diagram showing the principle of a data driving chip in a data driving module according to an embodiment of the present invention. see figure 1 , the data driver chip includes common field effect transisto...

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PUM

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Abstract

The invention relates to a data driving module and a failure detection method thereof, and a display device. The module includes a data driver chip; a backup FET group is disposed in the data driver chip; the plurality of input terminals and the plurality of output terminals of the backup FET group and the data driver chip are connected to a preset circuit; the backup FET group is switched on whena detection control signal is received, and the input terminal and the output terminal corresponding to the detection control signal are switched on; and the detection control signal is an external voltage signal to control the switching on and off of each backup FET in the backup FET group. According to the backup FET group in the data driver chip of this embodiment, failure detection can be performed on the data driver chip and the display substrate, which does not increase the size of the data driver chip and does not affect the wiring density of the display substrate.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a data drive module, a failure detection method thereof, and a display device. Background technique [0002] At present, in the process of manufacturing display substrates, due to problems such as inherent defects of pixel circuits and process fluctuations, the yield rate of display substrates is low. In order to improve the yield rate, it is necessary to perform failure analysis (FA) on the display substrate. In the related art, the failure analysis is realized based on the terminal voltage of the data-driven module (Driver IC), and the terminal voltage of the data-driven module is read through the test substrate (Test Panel) arranged on the edge of the display substrate, and the failure is analyzed based on the above-mentioned terminal voltage reason. However, considering the volume of the display substrate, the test substrate will be cut and discarded in the subsequent cutt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/00G09G3/20
CPCG09G3/006G09G3/20
Inventor 张昌
Owner BOE TECH GRP CO LTD
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