CN105549289B - A kind of array substrate, display and test macro - Google Patents
A kind of array substrate, display and test macro Download PDFInfo
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- CN105549289B CN105549289B CN201610132454.3A CN201610132454A CN105549289B CN 105549289 B CN105549289 B CN 105549289B CN 201610132454 A CN201610132454 A CN 201610132454A CN 105549289 B CN105549289 B CN 105549289B
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- goa unit
- clock signal
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1345—Conductors connecting electrodes to cell terminals
- G02F1/13454—Drivers integrated on the active matrix substrate
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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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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/136254—Checking; Testing
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- Nonlinear Science (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Optics & Photonics (AREA)
- Computer Hardware Design (AREA)
- Theoretical Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The embodiment of the invention discloses a kind of array substrates, comprising: several groups GOA unit and simplified GOA unit and several pixel circuits；Wherein, every group of GOA unit and simplify GOA unit and be connected in parallel, and the output end for simplifying GOA unit is electrically connected with the grid of thin film transistor (TFT) TFT in corresponding pixel circuit；Simplify GOA unit and be used to receive the first clock signal from positive clock signal input terminal, and receive second clock signal from reversed clock signal input terminal, is exported according to first clock signal and the second clock signal in the output end and adjust voltage.The embodiment of the invention also discloses a kind of display and test macros.Using the present invention, the threshold voltage of TFT can be corrected, promotes display effect.
Description
Technical field
The present invention relates to field of display technology more particularly to a kind of array substrates, display and test macro.
Background technique
With TFT-LCD (Thin Film Transistor Liquid Crystal Display, thin film transistor (TFT) liquid
Crystal display, abbreviation TFT-LCD) fast development, each employ new technology improve the competitiveness of product in market and reduce product
Cost.Wherein, GOA (Gate driver OnArray, array substrate row driving, abbreviation GOA) generation of the technology as new technology
Table, be by gate switch circuit integration in array substrate, to remove grid-driving integrated circuit part, thus save material and
Processing step is reduced, to achieve the purpose that reduce product cost.
Such as the structural schematic diagram for the array substrate that Fig. 1 is the prior art, array substrate includes multiple GOA units, each GOA
Unit have positive clock signal input terminal CLK, reversed clock signal input terminal CLKB, low voltage signal input terminal VSS and
Input terminal INPUT, output end OUTPUT and reset terminal RESET, wherein the output end of every a line GOA unit connects next line GOA
The input terminal of unit and the reset terminal for connecting lastrow GOA unit.
In the fabrication process of the array substrate, unstable due to process conditions, it is possible that the pixel of display panel
The threshold voltage of TFT causes display panel to show abnormal, in consideration of it, in order to make TFT there is a phenomenon where electrically deviating in circuit
Threshold voltage recovering it is normal, guarantee that the display effect of display panel is current urgent problem to be solved.
Summary of the invention
The technical problem to be solved by the embodiment of the invention is that providing a kind of array substrate, display and test macro.
The threshold voltage of TFT in pixel circuit can be adjusted, promote display effect.
In order to solve the above-mentioned technical problem, the embodiment of the invention provides a kind of array substrates, comprising:
Several groups GOA unit and simplified GOA unit and several pixel circuits；Wherein, every group of GOA unit and simplification
GOA unit is connected in parallel, and the output end for simplifying GOA unit is electric with the grid of thin film transistor (TFT) TFT in corresponding pixel circuit
Connection；
Simplify GOA unit and be used to receive the first clock signal from positive clock signal input terminal, and believes from reversed clock
Number input terminal receives second clock signal, defeated in the output end according to first clock signal and the second clock signal
Voltage is adjusted out.
Wherein, each simplified GOA unit does not include safety protective circuit.
Wherein, the positive clock signal input terminal and reversed clock signal input terminal of every group of simplified GOA unit and GOA unit
Connected signal wire is separation.
Wherein, GOA unit is shift register.
Correspondingly, the embodiment of the invention provides a kind of display, including any one of the above array substrate.
Correspondingly, a kind of test macro, including any one of the above array substrate, test device and heating device；
The test device, for measuring the threshold voltage of pixel circuit, if the threshold voltage is unsatisfactory for preset condition,
The first clock signal is inputted to the positive clock signal input terminal of corresponding simplified GOA unit, and to the simplified GOA unit
Reversed clock signal input terminal input second clock signal；
The cutter device is discarded when for the preset condition described in the threshold voltage recovering of TFT in the pixel circuit
The simplified GOA unit；
The heating device, for the array substrate to be heated and kept assigned temperature.
Wherein, the cutter device is specifically used for cutting off with the simplified GOA unit just using the method for laser cutting
To the signal wire of clock signal input terminal and reversed clock signal input terminal.
Wherein, the test device is specifically used for measuring the threshold voltage of the pixel circuit, if the threshold voltage is big
In preset value, indicate that the simplified GOA unit exports positive voltage；If the threshold voltage is less than preset value, the simplification is indicated
GOA unit exports negative voltage.
The implementation of the embodiments of the present invention has the following beneficial effects:
It is connected in parallel using simplified GOA unit and GOA unit, is needing the threshold value electricity to the TFT in pixel circuit
When pressure is adjusted, simplify GOA unit according to positive clock signal input terminal and the received clock of reversed clock signal input terminal
Signal exports in output end and adjusts voltage, adjusts the grid of voltage output value TFT, to realize the mesh for the threshold voltage for adjusting TFT
, promote display effect.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of existing array substrate；
Fig. 2 is the array base-plate structure schematic diagram of the embodiment of the present invention；
Fig. 3 is the structural schematic diagram of TFT in the pixel circuit of the embodiment of the present invention.
Specific embodiment
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 clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to fig. 2, it is a kind of structural schematic diagram of TFT adjusting circuit provided in an embodiment of the present invention, implements in the present invention
In example, it includes: several groups GOA unit and simplified GOA unit and pixel circuit and several pictures that TFT, which electrically adjusts circuit,
Plain circuit.Pixel circuit is the circuit that display pixel is used in display area, for every group of GOA unit and simplified GOA unit
Speech, GOA unit and normal GOA unit be connected in parallel, and simplifies the output end of GOA unit and the grid of TFT in corresponding pixel circuit
Pole electrical connection, GOA unit includes positive clock signal input terminal, reversed clock signal input terminal, low voltage signal input terminal, defeated
Enter end, output end and reset terminal, GOA unit is the GOA unit of existing complete function, the component for including in GOA unit and
The connection relationship of each element can refer to the prior art, and details are not described herein again for specific structure, when simplifying GOA unit including forward direction
Clock signal input part, reversed clock signal input terminal and output end, for for every group of GOA unit and simplifying GOA unit, GOA
Unit and the positive clock signal input terminal electrical connection for simplifying GOA unit, reversed clock signal input terminal electrical connection, output end electricity
Connection.Simplify the function that GOA circuit does not have existing GOA circuit completion, is needing to the corresponding pixel electricity of simplified GOA unit
Road carry out electrically adjustment when, simplify GOA unit be used for from positive the first clock signal of clock input, and from it is reversed when
Clock input terminal receives second clock signal, is exported according to the first clock signal and second clock signal in output end and adjusts voltage,
Corresponding pixel circuit adjusts threshold voltage according to the size for the adjusting voltage for simplifying GOA circuit output, makes the threshold of pixel circuit
Threshold voltage restores normal, the principle of threshold voltage adjustments are as follows: when simplifying GOA unit output positive voltage, interface-channel will appear
The idea being largely attracted, after warm-up movement, partial holes type defect is repaired, and part cavity type defect is not present after cooling,
In normal power-up pressure, the TFT of pixel circuit can be opened comparatively fast, then the threshold voltage of the TFT becomes smaller；Conversely, simplifying GOA unit
When exporting negative voltage, the threshold voltage of TFT can become larger.
It should be noted that needing to add pixel circuit during carrying out electrical adjustment to the TFT of pixel circuit
Heat treatment, makes the TFT of pixel circuit be heated to assigned temperature, generally 80 DEG C.
Further, simplifying GOA unit does not include safety protective circuit.For example, simplifying GOA unit for existing GOA
Do not include esd protection circuit, overvoltage crowbar, current foldback circuit etc. for unit, with reduce the hardware of GOA unit at
This.
Further, the positive clock signal input terminal and reversed clock signal of every group of simplified GOA unit and GOA unit are defeated
Entering the connected signal wire in end is separation.
Specifically, the short circuit and interference between signal wire in order to prevent, GOA unit simplified for every group and GOA unit and
Speech, simplify the signal wire that is connected with reversed clock signal input terminal of positive clock signal input terminal of GOA unit be it is dedicated, no
Signal wire is shared with GOA unit.
Further, GOA unit is shift register.
Correspondingly, the embodiment of the invention also provides a kind of array substrate, including above-mentioned electrical adjusting circuit.
Correspondingly, the embodiment of the invention also provides a kind of TFT electrical property regulating system, including array substrate, test device
And heating device, array substrate include electrical adjusting circuit, if electrically adjusting circuit includes a group of GOA unit and simplified GOA mono-
Member and several pixel circuits electrically adjust the explanation of the embodiment of the specific structure of circuit referring to Fig.1.
Test device is used for the threshold voltage of test pixel circuit, if threshold voltage is unsatisfactory for preset condition, to pixel electricity
The positive clock signal input terminal of the associated simplified GOA unit in road inputs the first clock signal, and to simplifying the anti-of GOA unit
Second clock signal is inputted to clock signal input terminal, which receives the first clock signal and second clock letter
Number, which exports in output end according to the first clock signal and second clock signal and adjusts voltage, makes pixel circuit
Threshold voltage recovering it is normal.
Cutter device is used for when the threshold voltage recovering preset condition of TFT in pixel circuit, by the simplification GOA unit
Positive clock signal input terminal and reversed clock signal input terminal carry out vacantly, discarding the simplification GOA unit.
Heating device is used for during the threshold voltage to pixel circuit is adjusted, and array substrate is heated and protected
Hold assigned temperature.
Specifically, after the processing procedure of array substrate is fully completed, test device is to each pixel circuit of array substrate
Threshold voltage measures, when the threshold voltage of some pixel circuit is unsatisfactory for preset condition, when needing to be adjusted, in the picture
The positive clock signal input terminal of plain circuit and reversed clock signal input terminal input clock signal, device for simultaneous heating is to array
Substrate is heated to assigned temperature, simplifies GOA unit according to the clock signal received and exports adjusting voltage to the picture in output end
The threshold voltage of plain circuit is adjusted, and after array substrate is cooling, discards the simplification GOA unit, and then array substrate uses
Existing GOA unit works.
Further, cutter device is used to cut off the positive clock signal for simplifying GOA unit using the method for laser cutting
The signal wire of input terminal and reversed clock signal input terminal discards the simplification GOA unit.It should be noted that cutter device
The signal wire of the output end of simplified GOA unit can be cut off, to achieve the purpose that discard the simplification GOA unit.
Further, test device is used for the threshold voltage of test pixel circuit, if threshold voltage is greater than preset value, instruction
Simplify GOA unit and exports positive voltage；If threshold voltage is less than preset value, indicate that simplifying GOA unit exports negative voltage.
Specifically, the threshold voltage that test device measures pixel circuit is greater than preset value, indicate that corresponding simplified GOA is mono-
Member output positive voltage, the interface-channel of the TFT of pixel circuit will appear the electronics being largely attracted, and after warm-up movement, part is empty
Cave type defect is repaired, and part cavity type defect is not present after cooling, and in normal power-up pressure, which can comparatively fast be opened, then should
The threshold voltage of TFT becomes smaller；Conversely, the threshold voltage that test device measures pixel circuit is less than preset value, instruction is corresponding
Simplify GOA unit and export negative voltage, the threshold voltage of the TFT of the pixel circuit is made to become larger.
Above disclosed is only a preferred embodiment of the present invention, cannot limit the power of the present invention with this certainly
Sharp range, those skilled in the art can understand all or part of the processes for realizing the above embodiment, and weighs according to the present invention
Benefit requires made equivalent variations, still belongs to the scope covered by the invention.
Claims (8)
1. a kind of array substrate characterized by comprising
Several groups array substrate row drives GOA unit and simplifies GOA unit and several pixel circuits；Wherein, every group of GOA
Unit and simplify GOA unit and be connected in parallel, and simplifies output end and the thin film transistor (TFT) in corresponding pixel circuit of GOA unit
The grid of TFT is electrically connected；
Simplify GOA unit to be used to receive the first clock signal from positive clock signal input terminal, and defeated from reversed clock signal
Enter end and receive second clock signal, is exported and adjusted in the output end according to first clock signal and the second clock signal
Save voltage.
2. array substrate as described in claim 1, which is characterized in that simplifying GOA unit does not include safety protective circuit.
3. array substrate as described in claim 1, which is characterized in that the positive clock of every group of simplified GOA unit and GOA unit
The signal wire that signal input part is connected with reversed clock signal input terminal is separation.
4. array substrate as claimed in any one of claims 1-3, which is characterized in that GOA unit is shift register.
5. a kind of display, which is characterized in that including the array substrate as described in claim 1-4 any one.
6. a kind of test macro characterized by comprising array substrate, test dress as described in claim 1-4 any one
It sets, cutter device and heating device；
The test device, for measuring the threshold voltage of pixel circuit, if the threshold voltage is unsatisfactory for preset condition, to right
The positive clock signal input terminal of the simplification GOA unit answered inputs the first clock signal, and to the anti-of the simplified GOA unit
Second clock signal is inputted to clock signal input terminal；
The cutter device when for the preset condition described in the threshold voltage recovering of TFT in the pixel circuit, is discarded described
Simplify GOA unit；
The heating device, for the array substrate to be heated and kept assigned temperature.
7. test macro as claimed in claim 6, which is characterized in that the cutter device is specifically used for using laser cutting
Method cutting and the positive clock signal input terminal of the simplified GOA unit and the signal wire of reversed clock signal input terminal.
8. test macro as claimed in claims 6 or 7, which is characterized in that the test device is specifically used for measuring the picture
The threshold voltage of plain circuit indicates that the simplified GOA unit exports positive voltage if the threshold voltage is greater than preset value；If institute
Threshold voltage is stated less than preset value, indicates that the simplified GOA unit exports negative voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610132454.3A CN105549289B (en) | 2016-03-09 | 2016-03-09 | A kind of array substrate, display and test macro |
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| CN201610132454.3A CN105549289B (en) | 2016-03-09 | 2016-03-09 | A kind of array substrate, display and test macro |
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| CN105549289A CN105549289A (en) | 2016-05-04 |
| CN105549289B true CN105549289B (en) | 2018-12-21 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106842734A (en) * | 2017-03-17 | 2017-06-13 | 武汉华星光电技术有限公司 | Liquid crystal display panel and liquid crystal display device |
| US10262564B2 (en) | 2017-07-12 | 2019-04-16 | Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd | Test circuit of gate driver on array and test method of gate driver on array |
| CN107221274B (en) * | 2017-07-12 | 2018-03-13 | 深圳市华星光电半导体显示技术有限公司 | GOA test circuits and GOA method of testings |
| CN108766381B (en) | 2018-06-01 | 2020-08-11 | 京东方科技集团股份有限公司 | Shift register circuit, array substrate and display device |
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| JPS63170616A (en) * | 1986-03-03 | 1988-07-14 | Seiko Epson Corp | Driving method for liquid crystal element |
| CN102708824A (en) * | 2012-05-31 | 2012-10-03 | 京东方科技集团股份有限公司 | Threshold voltage offset compensation circuit for thin film transistor, gate on array (GOA) circuit and display |
| CN102779494A (en) * | 2012-03-29 | 2012-11-14 | 北京京东方光电科技有限公司 | Gate driving circuit, method and liquid crystal display |
| CN102831860A (en) * | 2012-09-05 | 2012-12-19 | 京东方科技集团股份有限公司 | Shifting register, drive method thereof, gate driver and display device |
| CN104240631A (en) * | 2014-08-18 | 2014-12-24 | 京东方科技集团股份有限公司 | GOA circuit, driving method for GOA circuit and display device for GOA circuit |
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2016
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| JPS63170616A (en) * | 1986-03-03 | 1988-07-14 | Seiko Epson Corp | Driving method for liquid crystal element |
| CN102779494A (en) * | 2012-03-29 | 2012-11-14 | 北京京东方光电科技有限公司 | Gate driving circuit, method and liquid crystal display |
| CN102708824A (en) * | 2012-05-31 | 2012-10-03 | 京东方科技集团股份有限公司 | Threshold voltage offset compensation circuit for thin film transistor, gate on array (GOA) circuit and display |
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