CN106571125B - GOA driving circuit and its driving method, liquid crystal display - Google Patents
GOA driving circuit and its driving method, liquid crystal display Download PDFInfo
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- CN106571125B CN106571125B CN201610971649.7A CN201610971649A CN106571125B CN 106571125 B CN106571125 B CN 106571125B CN 201610971649 A CN201610971649 A CN 201610971649A CN 106571125 B CN106571125 B CN 106571125B
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 10
- 230000010152 pollination Effects 0.000 claims abstract description 37
- 239000010409 thin film Substances 0.000 claims abstract description 30
- 239000010408 film Substances 0.000 claims abstract description 11
- 230000005540 biological transmission Effects 0.000 claims description 3
- 239000013078 crystal Substances 0.000 claims 1
- 230000005611 electricity Effects 0.000 claims 1
- 230000011218 segmentation Effects 0.000 abstract description 11
- 238000010586 diagram Methods 0.000 description 6
- 101100489584 Solanum lycopersicum TFT1 gene Proteins 0.000 description 3
- 101100214488 Solanum lycopersicum TFT2 gene Proteins 0.000 description 2
- 101100214491 Solanum lycopersicum TFT3 gene Proteins 0.000 description 2
- 101100214494 Solanum lycopersicum TFT4 gene Proteins 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- SYHGEUNFJIGTRX-UHFFFAOYSA-N methylenedioxypyrovalerone Chemical compound C=1C=C2OCOC2=CC=1C(=O)C(CCC)N1CCCC1 SYHGEUNFJIGTRX-UHFFFAOYSA-N 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3674—Details of drivers for scan electrodes
- G09G3/3677—Details of drivers for scan electrodes suitable for active matrices only
-
- 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
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/04—Structural and physical details of display devices
- G09G2300/0404—Matrix technologies
- G09G2300/0408—Integration of the drivers onto the display substrate
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Liquid Crystal (AREA)
- Theoretical Computer Science (AREA)
- Mathematical Physics (AREA)
- Optics & Photonics (AREA)
- Computer Hardware Design (AREA)
- Liquid Crystal Display Device Control (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The present invention provides a kind of GOA driving circuit and its driving method, liquid crystal display.Wherein, GOA driving circuit includes: input signal cable, first film transistor, the second thin film transistor (TFT), third thin film transistor (TFT), the 4th thin film transistor (TFT), several row grid lines and the GOA unit connecting with each grid line.Wherein, the input signal cable for transmitting input signal for GOA unit includes the first cut-sytle pollination line, the second cut-sytle pollination line and the first line trigger signal.GOA unit includes signal input part.It not only can be carried out the segmentation of 1/2 line-screen using the liquid crystal display of above-mentioned GOA driving circuit but also can be carried out the segmentation of 1/3 line-screen, and increased the selectivity of line-screen segmentation.
Description
Technical field
The present invention relates to circuit field more particularly to a kind of GOA driving circuit and its driving method, further relates to have and be somebody's turn to do
The liquid crystal display of GOA driving circuit.
Background technique
Liquid crystal display (Liquid Crystal Display, abbreviation LCD) be most widely used flat-panel monitor it
One, it has many advantages, such as, and frivolous, colour gamut is high, low in energy consumption, has been widely used in television set, display, laptop at present
Deng in display product.Pursuit with people to display technology, the line-screen used on subway and bus at present also gradually by
Liquid crystal display panel replaces, and it is all to be cut by large-sized TV and display through over-segmentation that these line-screens used at present are most of
It forms, and these screens cut are all made of some display screens by point defect or line defect, can promote face in this way
The surcharge of plate, and be avoided that because of waste caused by scrap of the product.But since gated sweep is electric for GOA panel
Road has been produced in the TFT substrate of liquid crystal display panel, if carrying out the display that strip-cutting influences whether liquid crystal display panel, it is therefore desirable to
Certain special designing is carried out to GOA circuit.
Fig. 1 is GOA unit driving principle in the prior art.Fig. 2 is the structural schematic diagram of display panel in the prior art.
As shown in Figure 1, 2, wherein TFT1, TFT2, TFT3 and TFT4 are thin film transistor (TFT).Vck is clock signal, and vss is low potential
Input point, cgd indicate that integrated capacitance, Vouple indicate coupling.G (n-2), G (n) and G (n+2) are respectively the n-th -2 row, line n
With the gate driver output signal of the n-th+2 row.G first (n+2) first exports a high voltage pulse signal, by TFT4 to capacitor
Cb charges, and TFT1 grid is made to be in high potential.Then G (n) makes liquid crystal surface with the one high potential pulse of CLK synchronism output
The line n pixel switch of plate is in the open state, and TFT2 and TFT3 is opened in the high potential pulse of G (n+2) output later, at this time
Cb and G (n) are dragged down by Vss.After TFT1 closing, G (n) keeps Vss low potential.1 is display panel, and 2 be PCB circuit board, 3
For flip chip (Chip On Flex, abbreviation COF), gated sweep direction is from top to bottom.
Strip-cutting used at present is all largely 1/2 or 1/3 cutting, once design is decided and is difficult to carry out again
The selection of cutting ratio.
Summary of the invention
The present invention provides a kind of GOA driving circuit and its driving method, liquid crystal display, in the prior art to solve
Strip-cutting can not carry out the technical issues of cutting ratio selection again after design is completed.
First aspect present invention provides a kind of GOA driving circuit, comprising: input signal cable, first film transistor, second
Thin film transistor (TFT), third thin film transistor (TFT), the 4th thin film transistor (TFT), several row grid lines and the GOA being correspondingly connected with each grid line
Unit；
Wherein, the input signal cable for transmitting input signal for GOA unit includes the first cut-sytle pollination line, the second cutting
Control line and the first line trigger signal, GOA unit include signal input part；
The grid of first film transistor is connect with the first cut-sytle pollination line, and the GOA connecting with M-1 row grid line that drains is mono-
The signal input part connection of member；
The grid of second thin film transistor (TFT) is connect with the first cut-sytle pollination line, and drain the GOA unit connecting with M row grid line
Signal input part connection；
The grid of third thin film transistor (TFT) is connect with the second cut-sytle pollination line, and the GOA connecting with L-1 row grid line that drains is mono-
The signal input part connection of member；
The grid of 4th thin film transistor (TFT) is connect with the second cut-sytle pollination line, and drain the GOA unit connecting with L row grid line
Signal input part connection；
First film transistor, the second thin film transistor (TFT), third thin film transistor (TFT) and the 4th thin film transistor (TFT) source electrode with
The connection of first line trigger signal；
M-2 row grid line is located at 1/3 screen of liquid crystal display, and L-2 row grid line is located at 1/2 screen of liquid crystal display
At curtain.
Further, GOA unit further includes signal output end and reset terminal, and input signal cable further includes the second trigger signal
Line, wherein the signal input part for the GOA unit connecting with the first row and the second row grid line is connected with the second line trigger signal, with
The reset terminal of the GOA unit of last two rows grid line connection is connected with the second line trigger signal, the GOA unit connecting with other grid lines
Signal input part be connected with the signal output end of GOA unit for being spaced a line thereon, the GOA unit being connect with other grid lines
Reset terminal is connected with the signal output end of the GOA unit of its lower interval a line.
Further, input signal cable further includes the clock cable for being used for transmission clock signal, GOA unit also with clock
Signal wire connection.
Further, input signal cable further includes low potential input point, and GOA unit is also connect with low potential input point.
Second aspect of the present invention provides a kind of driving method of above-mentioned GOA driving circuit, comprising:
When carrying out the 1/3 screen cutting of liquid crystal display, the first cut-sytle pollination line exports high level, the second cut-sytle pollination
Line exports low level；
When carrying out the 1/2 screen cutting of liquid crystal display, the first cut-sytle pollination line exports low level, the second cut-sytle pollination
Line exports high level.
Third aspect present invention provides a kind of liquid crystal display, including GOA driving circuit described above.
The present invention provides a kind of liquid crystal display, GOA driving circuit and method, not only can be carried out the segmentation of 1/2 line-screen but also energy
1/3 line-screen segmentation is carried out, the selectivity of line-screen segmentation is increased.
Detailed description of the invention
The invention will be described in more detail below based on embodiments and refering to the accompanying drawings.Wherein:
Fig. 1 is GOA unit driving principle in the prior art；
Fig. 2 is the structural schematic diagram of display panel in the prior art；
Fig. 3 is cutting position diagram provided in an embodiment of the present invention；
Fig. 4 is the structural schematic diagram of GOA driving circuit provided in an embodiment of the present invention.
In the accompanying drawings, identical component uses identical appended drawing reference.The attached drawing is not drawn according to the actual ratio.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings.
Fig. 3 is cutting position diagram provided in an embodiment of the present invention.Fig. 4 is GOA provided in an embodiment of the present invention driving
The structural schematic diagram of circuit.As shown in figures 3 and 4, the present embodiment provides a kind of GOA driving circuits, comprising: input signal cable 21,
One thin film transistor (TFT) 22, the second thin film transistor (TFT) 23, third thin film transistor (TFT) 24, the 4th thin film transistor (TFT) 25, several row grid lines
26 and the GOA unit 27 that is connect with each grid line 26.Wherein, for transmitting the input signal cable of input signal for GOA unit 27
21 include the first cut-sytle pollination line 211, the second cut-sytle pollination line 212 and the first line trigger signal 213, and GOA unit 27 includes letter
Number input terminal.
The grid of first film transistor 22 is connect with the first cut-sytle pollination line 211, and drain electrode is connect with M-1 row grid line 26
GOA unit 27 signal input part connection.
The grid of second thin film transistor (TFT) 23 is connect with the first cut-sytle pollination line 211, what drain electrode was connect with M row grid line 26
The signal input part of GOA unit 27 connects.
The grid of third thin film transistor (TFT) 24 is connect with the second cut-sytle pollination line 212, and drain electrode is connect with L-1 row grid line 26
GOA unit 27 signal input part connection.
The grid of 4th thin film transistor (TFT) 25 is connect with the second cut-sytle pollination line 212, what drain electrode was connect with L row grid line 26
The signal input part of GOA unit 27 connects.
First film transistor 22, the second thin film transistor (TFT) 23, third thin film transistor (TFT) 24 and the 4th thin film transistor (TFT) 25
Source electrode connect with the first line trigger signal 213.
M-2 row grid line 26 is located at 1/3 screen B of liquid crystal display, and L-2 row grid line 26 is located at liquid crystal display
At 1/2 screen A.
Specifically, each grid line 26 connects a GOA unit 27.Above-mentioned GOA driving circuit is applied in liquid crystal display,
When carrying out the 1/3 screen cutting of liquid crystal display, the first cut-sytle pollination line 211 exports high level, the second cut-sytle pollination line 212
Export low level.When carrying out the 1/2 screen cutting of liquid crystal display, the first cut-sytle pollination line 211 exports low level, and second cuts
It cuts control line 212 and exports high level.Not only it can be carried out the segmentation of 1/2 line-screen but also can be carried out the segmentation of 1/3 line-screen, and increased line-screen point
The selectivity cut.
Further, GOA unit 27 further includes signal output end and reset terminal, and input signal cable 21 further includes the second triggering
Signal wire.Wherein, the signal input part and the second line trigger signal for the GOA unit 27 being connect with the first row and the second row grid line 26
It is connected.The reset terminal for the GOA unit 27 connecting with last two rows grid line 26 is connected with the second line trigger signal, with other grid lines 26
The signal input part of the GOA unit 27 of connection is connected with the signal output end for the GOA unit 27 for being spaced a line thereon.With other grid
The reset terminal for the GOA unit 27 that line 26 connects is connected with the signal output end of the GOA unit 27 of its lower interval a line.
Specifically, being the sequence number of all grid lines 26, the GOA being connect with the first row and the second row grid line 26 according to scanning sequency
The signal input part of unit 27 is connected with the second line trigger signal, the reset for the GOA unit 27 connecting with last two rows grid line 26
End is connected with the second line trigger signal.In addition to the first row, the second row and last two rows, the GOA unit that is connect with other grid lines 26
27 signal input part and the GOA for being spaced a line (such as current behavior line n, then being spaced a line i.e. the n-th -2 row thereon) thereon
The signal output end of unit 27 is connected.The reset terminal for the GOA unit 27 connecting with other grid lines 26 (is such as worked as with its lower interval a line
Move ahead as n row, then it lower is spaced a line, that is, n+2 row) the signal output end of GOA unit 27 be connected.
Further, input signal cable 21 further includes the clock cable for being used for transmission clock signal, GOA unit 27 also with
Clock cable connection.
Further, input signal cable 21 further includes low potential input point, and GOA unit 27 also connects with low potential input point
It connects.
A kind of driving method is provided in another embodiment of the present invention, for driving the GOA in above-described embodiment to drive
Dynamic circuit, comprising:
When carrying out the 1/3 screen cutting of liquid crystal display, the first cut-sytle pollination line exports high level, the second cut-sytle pollination
Line exports low level, while the first line trigger signal and the second line trigger signal share signal output.
When carrying out the 1/2 screen cutting of liquid crystal display, the first cut-sytle pollination line exports low level, the second cut-sytle pollination
Line exports high level, while the first line trigger signal and the second line trigger signal share signal output.
A kind of liquid crystal display is provided in another embodiment of the present invention, including the GOA driving in above-described embodiment
Circuit, above-mentioned liquid crystal display not only can be carried out the segmentation of 1/2 line-screen but also can be carried out the segmentation of 1/3 line-screen, increase line-screen segmentation
Selectivity.
Although by reference to preferred embodiment, invention has been described, the case where not departing from the scope of the present invention
Under, various improvement can be carried out to it and can replace component therein with equivalent.Especially, as long as there is no structures to rush
Prominent, items technical characteristic mentioned in the various embodiments can be combined in any way.The invention is not limited to texts
Disclosed in specific embodiment, but include all technical solutions falling within the scope of the claims.
Claims (5)
1. a kind of GOA driving circuit characterized by comprising input signal cable, first film transistor, the second film crystal
Pipe, third thin film transistor (TFT), the 4th thin film transistor (TFT), several row grid lines and the GOA unit being correspondingly connected with each grid line；
Wherein, the input signal cable for transmitting input signal for the GOA unit includes the first cut-sytle pollination line, second
Cut-sytle pollination line and the first line trigger signal, the GOA unit include signal input part；
The grid of the first film transistor is connect with the first cut-sytle pollination line, what drain electrode was connect with M-1 row grid line
The signal input part of the GOA unit connects；
The grid of second thin film transistor (TFT) is connect with the first cut-sytle pollination line, and drain the institute connecting with M row grid line
State the signal input part connection of GOA unit；
The grid of the third thin film transistor (TFT) is connect with the second cut-sytle pollination line, what drain electrode was connect with L-1 row grid line
The signal input part of the GOA unit connects；
The grid of 4th thin film transistor (TFT) is connect with the second cut-sytle pollination line, and drain the institute connecting with L row grid line
State the signal input part connection of GOA unit；
The first film transistor, second thin film transistor (TFT), the third thin film transistor (TFT) and the 4th film are brilliant
The source electrode of body pipe is connect with first line trigger signal；
M-2 row grid line is located at 1/3 screen of liquid crystal display, and L-2 row grid line is located at 1/2 screen of liquid crystal display
Place, wherein each grid line connects a GOA unit, when carrying out the 1/3 screen cutting of liquid crystal display, first cutting
Control line exports high level, and the second cut-sytle pollination line exports low level；When the 1/2 screen cutting for carrying out liquid crystal display
When, the first cut-sytle pollination line exports low level, and the second cut-sytle pollination line exports high level；
The GOA unit further includes signal output end and reset terminal, and the input signal cable further includes the second line trigger signal,
In, the signal input part and second line trigger signal of the GOA unit being connect with the first row and the second row grid line
It is connected, the reset terminal for the GOA unit connecting with last two rows grid line is connected with second line trigger signal, with it
The signal of the signal input part of the GOA unit of his grid line connection and the GOA unit for being spaced a line thereon
Output end is connected, the GOA unit of the reset terminal for the GOA unit connecting with other grid lines and its lower interval a line
The signal output end be connected.
2. GOA driving circuit according to claim 1, which is characterized in that the input signal cable further includes being used for transmission
The clock cable of clock signal, the GOA unit are also connect with the clock cable.
3. GOA driving circuit according to claim 1 or 2, which is characterized in that the input signal cable further includes low electricity
Position input point, the GOA unit are also connect with the low potential input point.
4. a kind of driving method of GOA driving circuit as described in any one of claims 1 to 3 characterized by comprising
When carrying out the 1/3 screen cutting of liquid crystal display, the first cut-sytle pollination line exports high level, and the second cut-sytle pollination line is defeated
Low level out；
When carrying out the 1/2 screen cutting of liquid crystal display, the first cut-sytle pollination line exports low level, and the second cut-sytle pollination line is defeated
High level out.
5. a kind of liquid crystal display, which is characterized in that including GOA driving circuit as described in any one of claims 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610971649.7A CN106571125B (en) | 2016-11-07 | 2016-11-07 | GOA driving circuit and its driving method, liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610971649.7A CN106571125B (en) | 2016-11-07 | 2016-11-07 | GOA driving circuit and its driving method, liquid crystal display |
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| Publication Number | Publication Date |
|---|---|
| CN106571125A CN106571125A (en) | 2017-04-19 |
| CN106571125B true CN106571125B (en) | 2019-12-03 |
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|---|---|---|---|---|
| CN103680439A (en) * | 2013-11-27 | 2014-03-26 | 合肥京东方光电科技有限公司 | Gate driving circuit and display device |
| CN105304042A (en) * | 2015-11-09 | 2016-02-03 | 深圳市华星光电技术有限公司 | Liquid crystal display screen and preparation method of strip-type liquid crystal display screen |
| CN105390115A (en) * | 2015-12-24 | 2016-03-09 | 深圳市华星光电技术有限公司 | Liquid crystal display device and GOA circuit |
| CN105513550A (en) * | 2016-01-04 | 2016-04-20 | 武汉华星光电技术有限公司 | Goa drive circuit |
| CN105976781A (en) * | 2016-07-14 | 2016-09-28 | 武汉华星光电技术有限公司 | Goa circuit |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI562109B (en) * | 2010-08-05 | 2016-12-11 | Semiconductor Energy Lab Co Ltd | Driving method of liquid crystal display device |
| KR102224080B1 (en) * | 2014-06-02 | 2021-03-10 | 삼성디스플레이 주식회사 | Display device |
-
2016
- 2016-11-07 CN CN201610971649.7A patent/CN106571125B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103680439A (en) * | 2013-11-27 | 2014-03-26 | 合肥京东方光电科技有限公司 | Gate driving circuit and display device |
| CN105304042A (en) * | 2015-11-09 | 2016-02-03 | 深圳市华星光电技术有限公司 | Liquid crystal display screen and preparation method of strip-type liquid crystal display screen |
| CN105390115A (en) * | 2015-12-24 | 2016-03-09 | 深圳市华星光电技术有限公司 | Liquid crystal display device and GOA circuit |
| CN105513550A (en) * | 2016-01-04 | 2016-04-20 | 武汉华星光电技术有限公司 | Goa drive circuit |
| CN105976781A (en) * | 2016-07-14 | 2016-09-28 | 武汉华星光电技术有限公司 | Goa circuit |
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|---|---|
| CN106571125A (en) | 2017-04-19 |
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Address after: 9-2 Tangming Avenue, Guangming New District, Shenzhen City, Guangdong Province Patentee after: TCL China Star Optoelectronics Technology Co.,Ltd. Address before: 9-2 Tangming Avenue, Guangming New District, Shenzhen City, Guangdong Province Patentee before: Shenzhen China Star Optoelectronics Technology Co.,Ltd. |