CN108550338A - A kind of Pad detection devices - Google Patents
A kind of Pad detection devices Download PDFInfo
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- CN108550338A CN108550338A CN201810668233.7A CN201810668233A CN108550338A CN 108550338 A CN108550338 A CN 108550338A CN 201810668233 A CN201810668233 A CN 201810668233A CN 108550338 A CN108550338 A CN 108550338A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
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Abstract
The invention discloses a kind of Pad detection devices, belong to detection technique field, including first detection unit and second detection unit, the first detection unit is connect with second detection unit, and the input terminal of the first detection unit and second detection unit is connect with external external equipment.The output end of first detection unit and second detection unit is the test side of product to be detected.The present invention by the signal for provided with the first signal generation module, second signal generation module, third signal generation module and fourth signal generation module input external equipment generate the signal of detection display screen, go out to be detected from detection port, to realize minimum Pad function modules, realize more fast checking functions, so that greatly reducing the occupied space of detection device, the additional fast checking functions of gating are combined by first detection unit and second detection unit simultaneously so that there are more fast checking functions.
Description
【Technical field】
The present invention relates to detection technique fields, and in particular to a kind of Pad detection devices.
【Background technology】
With the continuous development of TFT-LCD industries, requirement of the user to display is also higher and higher.Product competitiveness is high to be shown
Show that device must have many-sided advantage such as best in quality, economy, practicability.The advantages of quality includes contrast height, clarity
Height, wide viewing angle etc.；The advantages of economy includes low in energy consumption, and use cost is low, and production cost is low etc.；The advantages of practicability includes soft
Property, moderate dimensions can show much information format.
Also higher and higher to the size requirement of display screen with the raising of people's quality of the life, small portable is public
Trend, there are fast checking functions block, size can not possibly assess to obtain Tai Ji limit.Because when screen size walks the limit, due to space
Limitation, fast checking functions Pad can also be reduced, while can not design all detection function Pad, be likely to result in certain product defects
Missing inspection causes the waste of artificial material to flow into next process.
【Invention content】
The present invention is directed to disclose a kind of Pad detection devices, solve the problems, such as it is above-mentioned be previously mentioned, it is real in identical space
Now there is the Pad detection devices of more fast checking functions so that screen size can be smaller, is more in line with the need of society
It asks.
The technical solution that the present invention takes is：
A kind of Pad detection devices, including first detection unit and second detection unit, the first detection unit and the second detection
Unit connects, and the input terminal of the first detection unit and second detection unit is connect with external external equipment, and described the
The output end of one detection unit and second detection unit is the test side of product to be detected, the first detection unit and the second inspection
It is to generate detection signal detection product to be detected such as display screen for receiving the input signal of external external equipment to survey unit
Open circuit or short circuit；The input signal that the first detection unit combines the external equipment of basis with second detection unit generates
The open circuit or short circuit of new detection signal detection product to be detected such as display screen.
Further, the first detection unit includes the first signal generation module, second signal generation module, the life of third signal
At module, fourth signal test side, the 5th signal detection end, the 6th signal detection end, the 7th signal detection end, the inspection of the 8th signal
Survey end, the 9th signal detection end, third signal input part, fourth signal input terminal and the 5th signal input part, first letter
Number generation module is connect with fourth signal test side, the 6th signal detection end and the 9th signal detection end respectively, and respectively with
Second signal generation module is connected with third signal generation module, while the first signal generation module is inputted with third signal respectively
End connected with fourth signal input terminal, the second signal generation module is connect with third signal generation module, and respectively with
Fourth signal test side, the 5th signal detection end, fourth signal input terminal and the connection of the 5th signal input part, the third signal
Generation module connects with the 5th signal detection end, the 6th signal detection end, third signal input part and the 5th signal input part respectively
It connects, the fourth signal test side is connect with fourth signal input terminal, the 6th signal detection end and third signal input part
Connection, the 5th signal detection end is connect with the 5th signal input part.
Further, the first signal generation module includes third transistor and the 4th transistor, the third crystal
The source electrode of pipe is connect with the 9th signal detection end, and grid is believed with the drain electrode of the 4th transistor, fourth signal test side, the 4th respectively
Number input terminal is connected with second signal generation module, and drain electrode is connect with the source electrode of the 4th transistor, the grid of the 4th transistor
Pole is connect with the 6th signal detection end, third signal input part and third signal generation module respectively.
Further, the second signal generation module includes the 7th transistor and the 8th transistor, the 7th crystal
The source electrode of pipe is connect with the 7th signal detection end, and grid is believed with the drain electrode of the 4th transistor, fourth signal test side, the 4th respectively
The drain electrode of number input terminal, the 4th transistor is connected with third transistor grid, and drain electrode is connect with the source electrode of the 8th transistor, described
The grid of 8th transistor is connect with the 5th signal detection end, the 5th signal input part and third signal generation module respectively.
Further, the third signal generation module includes the 5th transistor and the 6th transistor, the 5th crystal
The source electrode of pipe is connect with the 8th signal detection end, grid respectively with the 5th signal detection end, the 5th signal input part, the 6th crystal
The drain electrode of pipe is connected with the 8th transistor gate, and drain electrode is connect with the source electrode of the 6th transistor, the grid of the 6th transistor
It is connect respectively with the 6th signal detection end, third signal input part and the 4th transistor gate.
Further, the second detection unit includes fourth signal generation module, the first signal detection end, second signal
Test side, third signal detection end, the first signal input part and second signal input terminal, the fourth signal generation module difference
With the first signal detection end, second signal test side, third signal detection end, the first signal input part and second signal input terminal
Connection, first signal detection end are connect with the first signal input part, and third signal detection end is inputted with second signal
End connection.
Further, the fourth signal generation module includes the first transistor and second transistor, the first crystal
The source electrode of pipe is connect with second signal test side, and grid is brilliant with the first signal detection end, the first signal input part and second respectively
The drain electrode of body pipe connects, and drain electrode is connect with second transistor source electrode, and the grid of the second transistor is examined with third signal respectively
Survey end connect with second signal input terminal, drain respectively with the first signal detection end, the first signal input part and the first transistor
Grid connection.
It is had the advantage that using technical solution of the present invention：
The present invention is by being provided with the first signal generation module, second signal generation module, third signal generation module and the 4th
The signal that signal generation module external equipment is inputted generate the signal of detection display screen, is examined from detection port
It surveys, to realize minimum Pad function modules, realizes more fast checking functions so that greatly reduce shared by detection device
Space, while the additional fast checking functions of gating are combined by first detection unit and second detection unit so that
With more fast checking functions.
【Description of the drawings】
Fig. 1 is a kind of Pad detection devices module frame chart of the embodiment of the present invention；
Fig. 2 is a kind of first detection unit schematic diagram of Pad detection devices of the present invention；
Fig. 3 is a kind of second detection unit schematic diagram of Pad detection devices of the present invention.
Main element symbol description
| First detection unit a | Second detection unit b | |
| First signal generation module a-1 | Second signal generation module a-2 | Third signal generation module a-3 |
| Fourth signal generation module b-1 | ||
| First signal detection end 10 | Second signal test side 11 | Third signal detection end 12 |
| Fourth signal test side 13 | 5th signal detection end 14 | 6th signal detection end 15 |
| 7th signal detection end 16 | 8th signal detection end 17 | 9th signal detection end 18 |
| The first transistor 21 | Second transistor 22 | Third transistor 23 |
| 4th transistor 24 | 5th transistor 25 | 6th transistor 26 |
| 7th transistor 27 | 8th transistor 28 | |
| First signal input part 31 | Second signal input terminal 32 | Third signal input part 33 |
| Fourth signal input terminal 34 | 5th signal input part 35 |
Following specific implementation mode will be further illustrated the present invention in conjunction with above-mentioned attached drawing.
【Specific implementation mode】
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clearly and completely
Description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on this hair
Embodiment in bright, the every other reality that those of ordinary skill in the art are obtained without creative efforts
Example is applied, shall fall within the protection scope of the present invention.
It should be noted that the term used in embodiments of the present invention is the mesh only merely for description specific embodiment
, it is not intended to limit the invention." the one of the embodiment of the present invention and singulative used in the attached claims
Kind ", " described " and "the" are also intended to including most forms, unless context clearly shows that other meanings.It is also understood that this
Term "and/or" used herein refers to and includes one or more associated any or all possible group of list items purposes
It closes.
Term " comprising " and " having " in description and claims of this specification and above-mentioned attached drawing and they appoint
What is deformed, it is intended that is covered and non-exclusive is included.Such as contain the process of series of steps or unit, method, system, production
The step of product or equipment are not limited to list or unit, but further include the steps that optionally do not list or unit, or
Further include optionally for other intrinsic steps of these processes, method, product or equipment or unit.
It should be noted that the embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings,
In which the same or similar labels are throughly indicated same or similar element or elements with the same or similar functions.Under
Face is exemplary by reference to the embodiment that attached drawing describes, and is only used for explaining the present invention, and cannot be construed to the present invention's
Limitation.
Following disclosure provides many different embodiments or example is used for realizing the different structure of the present invention.For letter
Change disclosure of the invention, hereinafter the component of specific examples and setting are described.Certainly, they are merely examples, and
It is not intended to limit the present invention.In addition, the present invention can in different examples repeat reference numerals and/or letter.It is this heavy
It is for purposes of simplicity and clarity, itself not indicate the relationship between discussed various embodiments and/or setting again.
Referring to Fig. 1, being a kind of module frame chart of Pad detection devices provided in an embodiment of the present invention, as shown in Figure 1, packet
First detection unit a and second detection unit b is included, the first detection unit a is connect with second detection unit b, the first detection
Unit a connect to be mainly used for being combined with each other with second detection unit b and carries out gating an additional fast checking functions so that has more
More fast checking functions.The input terminal of the first detection unit a and second detection unit b is connect with external external equipment,
External equipment is fast inspection frame, fast to examine the signal that frame is given as the signals such as voltage signal or other electric currents.The first detection unit a
Output end with second detection unit b is the test side of product to be detected, and the signal of output end output forms certain on a display screen
Kind display, so that when whether detection display screen short-circuit either open circuit appearance short circuit or short circuit occurs, what display screen was shown
It is different from the signal that output end is formed, to realize detection.The first detection unit a and second detection unit b are used for
The input signal of external equipment outside receiving generates the open circuit or short circuit of detection signal detection product to be detected such as display screen,
Pass through the signal external equipment（Voltage signal）It carries out according to the circuit inside first detection unit a and second detection unit b
Design carries out generation signal and is output on display screen from output end.The first detection unit a and second detection unit b combine root
According to the input signal of external equipment generate the open circuit or short circuit of new detection signal detection product to be detected such as display screen, it is logical
The combination for crossing two units realizes more fast checking functions to realize minimum Pad function modules.
Referring to Fig. 2, the principle of the first detection unit for a kind of Pad detection devices provided in the embodiment of the present invention
Figure.
The first detection unit a includes the first signal generation module a-1, second signal generation module a-2, third signal
Generation module a-3, fourth signal test side 13, the 5th signal detection end 14, the 6th signal detection end 15, the 7th signal detection end
16, the 8th signal detection end 17, the 9th signal detection end 18, third signal input part 33, fourth signal input terminal 34 and the 5th
Signal input part 35.The first signal generation module a-1 respectively with fourth signal test side 13, the 6th signal detection end 15 and
9th signal detection end 18 connects, and connect with second signal generation module a-2 and third signal generation module a-3 respectively
The first signal generation module a-1 is connect with third signal input part 33 and fourth signal input terminal 34 respectively simultaneously.Described second
Signal generation module a-2 is connect with third signal generation module a-3, and respectively with fourth signal test side 13, the 5th signal
Test side 14, fourth signal input terminal 34 and the 5th signal input part 35 connection described in third signal generation module a-3 respectively with
5th signal detection end 14, the 6th signal detection end 15, third signal input part 33 and the connection of the 5th signal input part 35.It is described
Fourth signal test side 13 is connect with fourth signal input terminal 34.The 6th signal detection end 15 and third signal input part 33
Connection, the 5th signal detection end 14 is connect with the 5th signal input part 35.First detection unit a is by being provided with 3 letters
Number input terminal and 6 signal output ends, wherein three signal output ends are each connect with a signal input part respectively, to
The output of direct signal may be implemented, then each of the other three be by being exported after signal generation module, from
And what is exported is signal after being treated, so that realizing minimum Pad function modules, realizes more fast inspection work(
Energy.
The first signal generation module a-1 includes third transistor 23 and the 4th transistor 24, the third transistor
23 source electrode is connect with the 9th signal detection end 18, grid respectively with the drain electrode of the 4th transistor 24, fourth signal test side 13,
Fourth signal input terminal 34 is connected with second signal generation module a-2, and drain electrode is connect with the source electrode of the 4th transistor 24.Described
The grid of four transistors 24 respectively with the 6th signal detection end 15, third signal input part 33 and third signal generation module a-3
Connection.Signal is handled by third transistor 23 and the 4th transistor 24, so that the signal that generates of processing is from the
Nine signal detection ends 18 are output on display screen so that realize more fast checking functions.
The second signal generation module a-2 includes the 7th transistor 27 and the 8th transistor 28, the 7th transistor
27 source electrode is connect with the 7th signal detection end 16, grid respectively with the drain electrode of the 4th transistor 24, fourth signal test side 14,
The drain electrode of fourth signal input terminal 34, the 4th transistor 24 is connected with 23 grid of third transistor, drain electrode and the 8th transistor 28
Source electrode connection described in the 8th transistor 28 grid respectively with the 5th signal detection end 14, the 5th signal input part 35 and the
Three signal generation module a-3 connections.Signal is handled by the 7th transistor 27 and the 8th transistor 28, so that place
The signal that reason generates is output to from the 7th signal detection end 16 on display screen so that realizes more fast checking functions.
It includes the 5th transistor 25 and the 6th transistor 26, the 5th transistor that the third signal, which generates mould a-3 blocks,
25 source electrode is connect with the 8th signal detection end 17, grid respectively with the 5th signal detection end 14, the 5th signal input part 35,
The drain electrode of six transistors 26 is connected with 28 grid of the 8th transistor, and drain electrode is connect with the source electrode of the 6th transistor 26, and the described 6th
The grid of transistor 26 is connect with the 6th signal detection end 15, third signal input part 33 and the 4th transistor gate 24 respectively.
Signal is handled by the 5th transistor 25 and the 6th transistor 26, so that the signal that processing generates is from the 8th signal
Test side 17 is output on display screen so that realizes more fast checking functions.
Referring to Fig. 3, the principle of the second detection unit for a kind of Pad detection devices provided in the embodiment of the present invention
Figure.
The second detection unit b includes fourth signal generation module b-1, the first signal detection end 10, second signal inspection
Survey end 11, third signal detection end 12, the first signal input part 31 and second signal input terminal 32.The fourth signal generates mould
Block b-1 respectively with the first signal detection end 10, second signal test side 11, third signal detection end 12, the first signal input part
31 and second signal input terminal 32 connect, first signal detection end 10 connect with the first signal input part 31, the third
Signal detection end 12 is connect with second signal input terminal 32.Second detection unit b is by being provided with 2 signal input parts and 3
Signal output end, wherein 2 signal output ends are each connect with a signal input part respectively, so as to realize direct signal
Output, then another be by being exported after signal generation module, to output be treated after
Signal realizes more fast checking functions so that realizing minimum Pad function modules.
The fourth signal generation module b-1 includes the first transistor 21 and second transistor 22, the first transistor
21 source electrode is connect with second signal test side 11, grid respectively with the first signal detection end 10, the first signal input part 31 and
The drain electrode of second transistor 22 connects, and drain electrode is connect with 22 source electrode of second transistor.The grid of the second transistor 22 is distinguished
Connect with third signal detection end 12 and second signal input terminal 32, drain electrode respectively with the first signal detection end 10, the first signal
Input terminal 31 is connected with the grid of the first transistor 21.By the first transistor 21 and second transistor 22 to signal at
Reason, so that the signal that processing generates is output to from second signal test side 11 on display screen so that realize more fast inspections
Function.
A kind of few Pad design principles of the present invention can not design all detection work(when the limit is compared in the space of display screen
Energy Pad, is likely to result in certain product defects missing inspections, to flow into next process, causes the waste of artificial material.And this is specially
Sharp design principle can realize more detection functions with identical Pad, reduce product defects probability.Under same space, increase fast
Checking functions.
Also higher and higher to the size requirement of display screen with the raising of people's quality of the life, small portable is public
Trend, there are fast checking functions block, size can not possibly assess to obtain Tai Ji limit.Because when screen size walks the limit, due to space
Limitation, fast checking functions Pad can also be reduced, and this patent can realize more fast checking functions in identical space.
Fast inspection Introduction on Principle：Fast inspection can filter out badness screen in advance, and defective products is avoided to flow into subsequent processing and cause people
The waste of power material resources.Signal input part is external equipment（Such as fast inspection frame）With the connectivity port of Panel, by external equipment to signal
（Usually voltage）, by signal input part, is connected and is designed by Panel internal circuits, signal is transported to signal output end,
And form certain display of display screen.If：Signal output end connects all red pixels, and signal is conveyed to signal input part,
Normal display be have in a pixel and only a sub-pixel is displayed in red, if there are two or one do not have, can detect
Go out adjacent lines short circuit or open circuit, you can pick out defective products.Common fast inspection design is that a signal input part can only
It is corresponding to export a signal output, and signal input will occupy most space, conventional design can limit narrow side product and set
Meter.This patent can pass through circuit design so that two signal inputs reach three signal outputs, and two reach six outputs.
Pad is a similar conductive port, is the port of detection device detection product, which can together manufacture with product
Out, be arranged on product, Pad blocks are made on product, can with external electric connection, because need to be connected with the external world, it is therefore desirable to set
Certain size is set, not so connects that extraneous equipment is more difficult to connect standard.After the completion of product testing, Pad blocks are usually to be cut away,
It can not also cut away.
The present invention has following advantageous effect:
The present invention is by being provided with the first signal generation module, second signal generation module, third signal generation module and the 4th
The signal that signal generation module external equipment is inputted generate the signal of detection display screen, is examined from detection port
It surveys, to realize minimum Pad function modules, realizes more fast checking functions so that greatly reduce shared by detection device
Space, while the additional fast checking functions of gating are combined by first detection unit and second detection unit so that
With more fast checking functions.
Claims (7)
1. a kind of Pad detection devices, it is characterised in that：Including first detection unit and second detection unit, first detection
Unit is connect with second detection unit, and the input terminal of the first detection unit and second detection unit is set with the external of outside
The output end of standby connection, the first detection unit and second detection unit is the test side of product to be detected, first inspection
It is to be checked for receiving the input signal generation detection signal detection of external external equipment to survey unit and second detection unit
Survey the open circuit or short circuit of product such as display screen；The first detection unit combines the external equipment of basis with second detection unit
Input signal generate the open circuit or short circuit of new detection signal detection product to be detected such as display screen.
2. a kind of Pad detection devices according to claim 1, it is characterised in that：The first detection unit includes first
Signal generation module, second signal generation module, third signal generation module, fourth signal test side, the 5th signal detection end,
6th signal detection end, the 7th signal detection end, the 8th signal detection end, the 9th signal detection end, third signal input part,
Four signal input parts and the 5th signal input part, the first signal generation module are believed with fourth signal test side, the 6th respectively
Number test side is connected with the 9th signal detection end, and is connected respectively with second signal generation module and third signal generation module
It connects, while the first signal generation module is connect with third signal input part and fourth signal input terminal respectively, the second signal
Generation module is connect with third signal generation module, and is believed respectively with fourth signal test side, the 5th signal detection end, the 4th
Number input terminal and the connection of the 5th signal input part, the third signal generation module respectively with the 5th signal detection end, the 6th letter
Number test side, third signal input part and the connection of the 5th signal input part, the fourth signal test side are inputted with fourth signal
End connection, the 6th signal detection end are connect with third signal input part, and the 5th signal detection end and the 5th signal are defeated
Enter end connection.
3. a kind of Pad detection devices according to claim 2, it is characterised in that：The first signal generation module includes
Third transistor and the 4th transistor, the source electrode of the third transistor are connect with the 9th signal detection end, and grid is respectively with
The drain electrode of four transistors, fourth signal test side, fourth signal input terminal are connected with second signal generation module, drain electrode and the 4th
The source electrode of transistor connects, the grid of the 4th transistor respectively with the 6th signal detection end, third signal input part and the
Three signal generation modules connect.
4. a kind of Pad detection devices according to claim 3, it is characterised in that：The second signal generation module includes
The source electrode of 7th transistor and the 8th transistor, the 7th transistor is connect with the 7th signal detection end, and grid is respectively with
Drain electrode, fourth signal test side, fourth signal input terminal, the drain electrode of the 4th transistor and the third transistor grid of four transistors
Connection, drain electrode are connect with the source electrode of the 8th transistor, the grid of the 8th transistor respectively with the 5th signal detection end, the 5th
Signal input part is connected with third signal generation module.
5. a kind of Pad detection devices according to claim 4, it is characterised in that：The third signal generation module includes
The source electrode of 5th transistor and the 6th transistor, the 5th transistor is connect with the 8th signal detection end, and grid is respectively with
The drain electrode at five signal detection ends, the 5th signal input part, the 6th transistor is connected with the 8th transistor gate, and drain electrode is brilliant with the 6th
The source electrode of body pipe connects, the grid of the 6th transistor respectively with the 6th signal detection end, third signal input part and the 4th
Transistor gate connects.
6. a kind of Pad detection devices according to claim 1, it is characterised in that：The second detection unit includes the 4th
Signal generation module, the first signal detection end, second signal test side, third signal detection end, the first signal input part and
Binary signal input terminal, the fourth signal generation module respectively with the first signal detection end, second signal test side, third signal
Test side, the first signal input part are connected with second signal input terminal, first signal detection end and the first signal input part
Connection, third signal detection end is connect with second signal input terminal.
7. a kind of Pad detection devices according to claim 1, it is characterised in that：The fourth signal generation module includes
The source electrode of the first transistor and second transistor, the first transistor is connect with second signal test side, and grid is respectively with
One signal detection end, the first signal input part are connected with the drain electrode of second transistor, and drain electrode is connect with second transistor source electrode, institute
The grid for stating second transistor is connect with third signal detection end and second signal input terminal respectively, drain electrode respectively with the first signal
Test side, the first signal input part are connected with the grid of the first transistor.
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| CN201810668233.7A CN108550338B (en) | 2018-06-26 | 2018-06-26 | Pad detection device |
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|---|---|---|---|
| CN201810668233.7A CN108550338B (en) | 2018-06-26 | 2018-06-26 | Pad detection device |
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| US20080135846A1 (en) * | 2006-12-12 | 2008-06-12 | Kyoung-Ju Shin | Thin film transistor substrate and method of manufacture |
| CN106291999A (en) * | 2015-06-24 | 2017-01-04 | 乐金显示有限公司 | Display device and the method for test display apparatus |
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