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Array substrate detection signal distribution device and detection device

An array substrate and detection signal technology, which is applied in the field of array substrate detection signal distribution devices and detection equipment, can solve the problems of reducing detection efficiency, inputting detection signals, and reducing the versatility of detection equipment

Active Publication Date: 2012-09-19
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, the inventor found the following defects in the prior art during the research of the present invention: when performing ESS detection based on the signal distribution device, for large-scale array substrates, different MUXs can input detection signals in order to short circuit The detection device detects the current between adjacent detection pads to determine whether there is a short circuit
However, for medium-sized or small-sized array substrates, multiple MUXs cannot input detection signals to each array substrate due to the formation of short-circuit groups through short-circuit bars and short-circuit wiring between each array substrate, thus reducing the accuracy of ESS detection
If different detection signal distribution devices and circuits are used respectively, the versatility of the detection equipment will be reduced, and the detection efficiency will also be reduced for separate detection

Method used

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  • Array substrate detection signal distribution device and detection device
  • Array substrate detection signal distribution device and detection device
  • Array substrate detection signal distribution device and detection device

Examples

Experimental program
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Effect test

Embodiment 1

[0041] The array substrate detection signal distribution device provided in this embodiment includes at least two MUXes and a DMUX that sequentially distributes enabling signals to the MUXes, wherein the input terminals of each MUX include a detection signal input terminal and an enabling signal input terminal; each The output terminals of the MUX include a detection signal output terminal and an enabling signal output terminal; the enabling signal output terminal of one MUX is connected to the enabling terminal of at least another MUX through short-circuit wiring.

[0042] The array substrate detection signal distribution device of this embodiment selectively controls the on-states of multiple MUXes through the enable signal, so that multiple MUXs can provide detection signals in sequence, or multiple MUXs can simultaneously provide detection signals, so that the When performing ESS inspection, each group of array substrates can be inspected sequentially, avoiding the phenomen...

Embodiment 2

[0047] Figure 5 A schematic diagram of the circuit structure of the array substrate detection signal distribution device provided in Embodiment 2 of the present invention, as shown in Figure 5 As shown, the array substrate detection signal distribution device includes a plurality of MUX 11 and a DMUX 10, each MUX 11 includes an input terminal 12, an output terminal 13 and an enabling terminal 14, and the output terminals of the DMUX 10 are respectively connected to the multiple MUX 11 The enabling terminal 14 is connected, wherein, the input terminal 12 of each MUX 11 comprises a detection signal input terminal 122 and an enabling signal input terminal 121; the output terminal 13 of each MUX 11 comprises a detection signal output terminal 131 and an enabling signal output terminal 132 ; the enable signal output end 132 of the first MUX 11 is connected to the enable end 14 of other MUX 11 through the short-circuit wiring 16 .

[0048] The detection signal input end includes ...

Embodiment 3

[0051] The array substrate detection signal distribution device provided in this embodiment includes at least two MUXs and a DMUX that sequentially distributes enable signals to the MUXes, and also includes: a plurality of relays, arranged on the short-circuit wiring between the MUXs; the relay control The module is connected with each relay, and is used for outputting a closing signal to control each relay to close when performing photoelectric detection, and outputting an opening signal to control each relay to open when performing short-circuit detection.

[0052] The array substrate detection signal distribution device of this embodiment can make multiple MUXs provide detection signals sequentially through relays and relay control modules, or make multiple MUXs provide detection signals simultaneously, so that when performing ESS detection, each group can be detected sequentially. The array substrate avoids the phenomenon that the ESS detection of other groups of normal arr...

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Abstract

The invention relates to an array substrate detection signal distribution device and a detection device. The array substrate detection signal distribution device comprises at least two MUX (multiplexer boards) and a DMUX (demultiplexer) which can sequentially distribute enabling signals to the MUX, as well as a plurality of relays and a relay control module, wherein the plurality of the relays are arranged on short-circuit wiring among the MUX; and the relay control module is connected with all the relays and is used for outputting closing signals to control all the relays to close when photoelectric detection is performed and outputting opening signals to control all the relays to open when short-circuit detection is performed. The array substrate detection device disclosed by the invention comprises the array substrate detection signal distribution device. According to the array substrate detection signal distribution device and the detection device, disclosed by the invention, the plurality of the MUX can sequentially provide detection signals when ESS (electronic substrate screening) detection is performed, and simultaneously provide the detection signals when photoelectric detection is performed, so that the array substrate detection efficiency is improved, and the accuracy of ESS detection is improved.

Description

[0001] The present invention is a divisional application of an invention patent with an application date of January 4, 2010, an application number of 201010033681.3, and an invention title of "array substrate detection signal distribution device and detection equipment". technical field [0002] The invention relates to a liquid crystal panel detection technology, in particular to an array substrate detection signal distribution device and detection equipment. Background technique [0003] At present, the information and communication industry has become the mainstream industry today, especially various communication display products are the focus of development, and the flat panel display provides an interface for people to communicate information, so it is particularly important. As far as flat panel displays are concerned, liquid crystal displays with superior characteristics such as high image quality, good space utilization efficiency, low power consumption, and no radia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13G01R31/02
Inventor 李国烈
Owner BOE TECH GRP CO LTD