CN105957493B - Display device and driving method thereof - Google Patents
Display device and driving method thereof Download PDFInfo
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- CN105957493B CN105957493B CN201610556913.0A CN201610556913A CN105957493B CN 105957493 B CN105957493 B CN 105957493B CN 201610556913 A CN201610556913 A CN 201610556913A CN 105957493 B CN105957493 B CN 105957493B
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 210000001367 artery Anatomy 0.000 claims description 3
- 210000003462 vein Anatomy 0.000 claims description 3
- 239000011159 matrix material Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000004973 liquid crystal related substance Substances 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
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Classifications
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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
- G09G3/20—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
- G09G3/3648—Control of matrices with row and column drivers using an active matrix
Abstract
The invention discloses a driving method for driving a display device, which comprises a source driver, a grid driver and an active array region, and comprises the following steps: providing a plurality of source start signal pulses to the source driver in sequence, and controlling the source driver to output a plurality of data signals to the active array region in sequence; sequentially providing a plurality of grid enable signal pulses to the grid driver so as to control the grid driver to sequentially output a plurality of grid signals to the active array region; wherein the periods of the source start signal pulses are sequentially and gradually lengthened. In addition, a display device is also disclosed.
Description
Technical field
The present invention is about a kind of display device and its driving method.
Background technique
With the raising of liquid crystal display (Liquid Crystal Display, LCD) resolution, grid line correspondingly increases
Add, to control corresponding pixel in panel of LCD.However, every grid line can be opened since grid line number increases
Time shortening is opened, is reduced with to pixel charging time, and the load of the active area in panel of LCD increases, and causes
Pixel can not be fully charged or be accidentally filled, and display quality is caused to decline or show abnormal.
From the above, referring to Fig. 1, being the schematic diagram for showing LCD display type structure.In Fig. 1, active-matrix area
104 have tetra- regions A, B, C and D, wherein the area A be near driver export starting point, receive earliest data-signal with
Grid signal, the area B are apart from the farther away one end of source electrode driver 102, and the area C is apart from the farther away one end of gate drivers 103, D
Area be apart from gate drivers 103 farther out and apart from source electrode driver 102 farther out.When liquid crystal display panel source electrode driver 102 by
The area A in active-matrix area 104 to the area B sequentially outputting data signals when because RC load cause data-signal to drive apart from source electrode
Dynamic 102 area farther away one end B of device can generate delay effect, lead to the undercharge of display.When gate drivers 103 export grid
When signal is from the area A in active-matrix area 104 to the area C, also because RC load so that grid signal apart from gate drivers 103 compared with
The area C of distal end has an impact, so that grid line closes not exclusively and occurs accidentally to fill phenomenon, leads to the color range mistake of display.And
In large scale display panel, the problem that the decline of the area D display quality or display in active-matrix area 104 are abnormal is more obvious.
To solve the above-mentioned problems, related fields there's no one who doesn't or isn't painstakingly seeks solution, a mesh of the content of present invention
Be that a kind of display device and its driving method are being provided, use and be present in the problems of the prior art described in improvement.
Summary of the invention
Summary of the invention be intended to provide this disclosure simplify abstract so that reader have to this disclosure it is basic
Understand.The invention content is not the complete overview of this disclosure, and its be not intended to point out the embodiment of the present invention it is important/
Key element defines the scope of the present invention.
The one technology aspect of the content of present invention is about a kind of display-apparatus driving method, and wherein display device includes source electrode
Driver, gate drivers and active array area, this driving method include being sequentially provided multiple source electrode initial signal pulse waves extremely
Source electrode driver sequentially exports multiple data-signals to active array area to control source level driver；And it is sequentially provided more
A grid enable signal pulse wave sequentially exports multiple grid signals to active battle array to control gate drivers to gate drivers
Arrange area；Wherein the period of source electrode initial signal pulse wave gradually lengthens.
Another embodiment according to the present invention, the sequential cycles of its grid enable signal pulse wave gradually add in above-mentioned driving method
It is long.
Another embodiment according to the present invention, the period of above-mentioned each grid enable signal pulse wave include work pulse wave during with
During ending pulse wave, wherein it is substantially identical during each work pulse wave, to control each grid signal with substantially identical
The signal enable time, and wherein during n-th cut-off pulse wave greater than during (N-1) a cut-off pulse wave, N is grid line number and is
Positive integer greater than 1.
Another embodiment according to the present invention, during the n-th cut-off pulse wave in above-mentioned grid enable signal pulse wave with (N-
1) there is a relationship during a cut-off pulse wave: during n-th cut-off pulse wave=(2/ (N+1)) * the (N-1) a cut-off pulse wave phase
Between, wherein N is grid line quantity.
According to yet another embodiment of the invention, in above-mentioned driving method, the period of source electrode initial signal pulse wave and grid enable
The period of signal pulse wave has sequentially and one-to-one corresponding relationship.
In order to achieve the above object, another technology aspect of the content of present invention is about a kind of display device.Above-mentioned display device,
Including source electrode driver, gate drivers and sequence controller.Source electrode driver is electrically connected multiple data lines, gate drivers
It is electrically connected a plurality of grid line.Sequence controller sequentially exports multiple source electrode initial signal pulse waves to source electrode driver and sequentially
Multiple grid enable signal pulse waves are exported to gate drivers.Wherein, gate drivers according to grid enable signal pulse wave sequentially
Multiple grid signals are exported to grid line, and source electrode driver is sequentially to export multiple data according to source electrode initial signal pulse wave
Signal enable data line, and wherein sequence controller includes source electrode initial signal pulse wave control assembly to control source electrode initial signal
The sequential cycles of pulse wave gradually lengthen.
Another embodiment according to the present invention, wherein sequence controller additionally comprise grid enable signal pulse wave control assembly with
The sequential cycles of the ultimate attainment energy signal pulse wave of control gate gradually lengthen.
The period of another embodiment according to the present invention, each grid enable signal pulse wave of sequence controller output includes work
Make during pulse wave and during cut-off pulse wave, wherein it is substantially identical during each work pulse wave, to control each grid signal tool
There is the substantially identical signal enable time, and wherein during n-th cut-off pulse wave greater than during (N-1) a cut-off pulse wave, N is
Grid line number and be positive integer greater than 1.
Another embodiment according to the present invention, the n-th in grid enable signal pulse wave that above-mentioned sequence controller exports are cut
Only during pulse wave with during (N-1) a cut-off pulse wave have a relationship: n-th end pulse wave during=(2/ (N+1)) * the
(N-1) during a cut-off pulse wave, wherein N is grid line quantity.
According to yet another embodiment of the invention, in above-mentioned display device, the period of source electrode initial signal pulse wave and grid enable
The period of signal pulse wave has sequentially and one-to-one corresponding relationship.
Therefore, technology contents according to the present invention, the embodiment of the present invention is by providing a kind of display device and its driving side
Method, using improves grid signal because the problem of data are accidentally filled caused by transmission delay, and can improve that data-signal level is incorrect to be led
The phenomenon that causing undercharge.
After refering to following description, persond having ordinary knowledge in the technical field of the present invention, which works as, can will readily appreciate that this
The essence spirit of invention and other goals of the invention and the technology used in the present invention means and state sample implementation.
Detailed description of the invention
For above and other purpose, feature, advantage and embodiment of the invention can be clearer and more comprehensible, institute's accompanying drawings are said
It is bright as follows:
Fig. 1 is the schematic diagram for being painted a kind of display device according to one embodiment of the invention.
Fig. 2 is the drive waveforms schematic diagram for being painted a kind of undercharge.
Fig. 3 is the drive waveforms schematic diagram for being painted a kind of grid line incompetence.
Fig. 4 is the schematic diagram for being painted the drive waveforms of the embodiment of the present invention.
Wherein, appended drawing reference:
101: sequence controller
102: source electrode driver
103: gate drivers
104: active-matrix area
105, STB: source electrode initial signal pulse wave
106, Data: data-signal
107, OE: grid enable signal pulse wave
108: data line
109: grid line
201: undercharge phenomenon
301: accidentally filling phenomenon
G: nth grid signal
G: the (n+1)th grid signal
T1, t1 (1)~t1 (N): data-signal exports the time
T2: during work pulse wave
T3, t3 (1)~t3 (N): during cut-off pulse wave
Specific embodiment
In order to keep the narration of this disclosure more detailed with it is complete, below for state sample implementation of the invention and specific
Embodiment proposes illustrative description；But this not implements or uses the unique forms of the specific embodiment of the invention.Embodiment party
The feature of multiple specific embodiments is covered in formula and to construction and the method and step for operating these specific embodiments and its
Sequentially.However, can also reach identical or impartial function and sequence of steps using other specific embodiments.
Unless this specification is defined otherwise, technology belonging to the meaning and the present invention of science and technology vocabulary used herein is led
Tool usually intellectual understands identical as usual meaning in domain.In addition, in the case of getting along well context conflict, this explanation
Singular noun used in book covers the complex number type of the noun；And also cover the singular type of the noun when used multiple nouns.
To improve delay effect caused by the inside RC load of display device, and then data-signal is made to generate undercharge
Or accidentally fill influence.The drive mode of data-signal is adjusted by this display device and its driving method, it is remote in panel to reduce
End pixel data signal integrity is insufficient, makes to show that picture color range mistake leads to the problem of bright concealed wire.It is filled about display of the invention
It sets and its content of driving method will be discussed in detail with subsequent embodiment.
In Fig. 2, source electrode initial signal pulse wave (STB) is used to control the output time (t1) of each data-signal and then determines
Fixed each data-signal (Data) charging time length.However, when the unlatching of grid enable signal pulse wave (OE) control grid line
When time deficiency, that is, (t2) is too short during the pulse wave that works, and will lead to voltage data signal and not yet charges to ideal level, grid causes
Energy signal pulse wave (OE) controls grid line and enters closed state, that is, enters during cut-off pulse wave (t3), causes as real in Fig. 2
Data-signal undercharge phenomenon shown in wire frame 201, and then keep outputting data signals level incorrect, cause the color range of display wrong
Accidentally.
In order to solve the problems, such as above-mentioned undercharge, another driving method is more proposed as shown in figure 3, grid enable is believed in figure
Feel the pulse and extend during the work pulse wave of wave (OE) (t2) to avoid grid line opening time deficiency, at this time apart from gate drivers compared with
(G opens nth grid line to remote nth grid signal, but because of (t3) time mistake during RC load delay relationship and cut-off pulse wave
It is short, cause nth grid line not yet to close completely, (n+1)th grid signal (Gn+1) controls (n+1)th grid line connecting and open
It opens, so that the pixel on nth grid line is received because being not completely turned off the pixel that can be accidentally charged on (n+1)th grid line institute
Data-signal (Data) voltage causes accidentally to fill phenomenon as shown in solid box 301 in Fig. 3, so that display level mistake.In order to increase
Add the time of grid enable signal pulse wave (OE) enable, so that in the case where data-signal output time (t1) is fixed, compression
During cut-off pulse wave (t3), to show this driving method still have improvement space.
The present invention separately proposes that the driving method of an embodiment uses the undercharge for solving above-mentioned generation and accidentally fills phenomenon simultaneously
It can execute by the framework of display device shown in FIG. 1, be held however, driving method is not limited by the element of display device
Row, following embodiment are only to illustrate one of implementation of the invention.Please refer to Fig. 1 and Fig. 4, the liquid crystal display panel of Fig. 1
Framework includes sequence controller 101, source electrode driver 102, gate drivers 103 and active-matrix area 104, wherein including N
Grid line 109, M data line 108 and multiple pixels arranged in arrays.101 output signal 105,106 of sequence controller
To source electrode driver 102, and output signal 107 is to gate drivers 103.The signal 105 is the data-signal that Fig. 4 is painted
(Data), signal 106 is the source electrode initial signal pulse wave (STB) that Fig. 4 is painted, and signal 107 is the grid enable signal that Fig. 4 is painted
Pulse wave (OE), wherein source electrode initial signal pulse wave (STB) and grid enable signal pulse wave (OE) cycle time having the same are long
Degree.Gate drivers 103 export grid signal sequentially according to grid enable signal pulse wave (OE) to open corresponding grid line
109, source electrode driver 102 sequentially exports multiple data-signals (Data) to a plurality of number according to source electrode initial signal pulse wave (STB)
According to line 108, picture corresponding to grid line is sequentially turned on sequentially data-signal (Data) to be written in active-matrix area 104
Element, to show picture to be presented.
In detail, sequence controller 101 comes by data-signal output time (t1) of source electrode initial signal pulse wave (STB)
The data-signal (Data) for controlling pixel in the grid line that each is opened latches the time.In addition, sequence controller 101 also sends out grid
Ultimate attainment energy signal pulse wave (OE), (t2) and cut-off arteries and veins during the period of each grid enable signal pulse wave (OE) includes work pulse wave
During wave (t3).(t2) is that gate drivers 103 export grid signal to open a grid line 109 during each work pulse wave
The unlatching of a corresponding column pixel or enable time, so that data-signal (Data) can be written into or be shown in active-matrix area
In 104 in a corresponding column pixel, wherein during a picture or frame in (frame) grid enable signal pulse wave (OE)
(t2) is fixed during each work pulse wave, and data-signal needed for time span makes pixel enough charges to required voltage electricity
It is flat, and sequentially gradually lengthened by each source electrode initial signal pulse wave (STB) cycle time is adjusted, so it is sent to active-matrix
Data-signal output time (t1) of pixel increases on the grid line that source electrode driver 102 gets over distal end in area 104, such as main
Source electrode initial signal pulse wave (STB) period in the area B is greater than source electrode initial signal pulse wave (STB) week in the area A in dynamic matrix area 104
Phase, that is, source electrode initial signal pulse wave (STB) data-signal output time t1 (N) is greater than source electrode initial signal pulse wave (STB) number
It is believed that number output time t1 (N-1), source electrode initial signal pulse wave (STB) data-signal output time t1 (N-1) rise greater than source electrode
Beginning signal pulse wave (STB) data-signal output time t1 (N-2) ... the output of source electrode initial signal pulse wave (STB) data-signal
Time t1 (2) is greater than source electrode initial signal pulse wave (STB) data-signal output time t1 (1), produces to avoid because of RC load effect
Raw remote data signal (Data) undercharge phenomenon occurs.
In addition, as each source electrode initial signal pulse wave (STB) sequential cycles gradually lengthen, to control distal end columns data
Signal (Data) latch the time extend, avoid remote data signal by RC load effect undercharge.In grid enable signal
Under (t2) fixed during the work pulse wave of pulse wave (OE) and sufficiently long situation, 109 opening time of grid line is constant but corresponding
109 shut-in time of grid line will extend increase therewith, so that (t3 (the 2)) time during the cut-off pulse wave of Article 2 grid line 109
During cut-off pulse wave greater than first grid line 109 (t3 (1)), and can as seen from Figure 4 the last item grid line 109 cut
Only during pulse wave (t3 (N)) will longest, wherein during a picture or frame (frame) multiple grid enable signal arteries and veins
In wave (OE) n-th cut-off pulse wave during with during a cut-off pulse wave of (N-1) have following relationship: n-th cut-off pulse wave
During period=a cut-off pulse wave of (2/ (N+1)) * the (N-1), uses and solve distal end grid line 109 because of the RC effect that is likely to occur
And cause to close incomplete problem and achieve a solution, accidentally filling problem and also can get improves.
Therefore, the driving method of the proposed display device of this case includes and is sequentially provided multiple source electrodes by sequence controller to originate
Signal pulse wave and data-signal are to source electrode driver, wherein when output of the source electrode initial signal pulse wave to control data-signal
Between, and the cycle length of multiple source electrode initial signal pulse waves has cumulative trend, in addition sequence controller is sequentially provided grid
Enable signal pulse wave to gate drivers, gate drivers are sequentially provided grid signal to correspondence according to grid enable signal pulse wave
Grid line, source electrode driver provides on multiple data-signals to the corresponding grid line opened according to source electrode initial signal pulse wave
Multiple data lines that pixel is connected.Wherein, the period of each grid enable signal pulse wave include work pulse wave during with cut-off
It is identical during multiple work pulse waves or fixed in multiple grid enable signal pulse waves during a frame during pulse wave, and grid
It is ultimate attainment can time span during multiple cut-off pulse waves of signal pulse wave it is then increasingly longer, whereby because RC load effect generate it is remote
End data signal (Data) undercharge accidentally fills phenomenon and is able to be improved.
Although disclosing specific embodiments of the present invention in embodiment above, however, it is not to limit the invention, this
Has usually intellectual in technical field that the present invention belongs to, in the case of not departing from the principle of the present invention and spirit, when can be to it
Carry out various changes and modification, therefore protection scope of the present invention is when being subject to subsidiary claim institute defender.
Claims (4)
1. a kind of driving method, to drive a display device, which includes one source driver, a gate drivers
An and active array area, which is characterized in that the driving method includes the following steps:
Multiple source electrode initial signal pulse waves are sequentially provided to the source electrode driver, to control the source electrode driver sequentially export it is more
A data-signal is to the active array area；And
Multiple grid enable signal pulse waves are sequentially provided to the gate drivers, to control the gate drivers sequentially export it is more
A grid signal is to the active array area；
Wherein the sequential cycles of those source electrode initial signal pulse waves gradually lengthen；
The sequential cycles of those grid enable signal pulse waves gradually lengthen；
The period of each of grid enable signal pulse wave include one work pulse wave during and one cut-off pulse wave during, wherein often
It is substantially identical during one those work pulse waves, when controlling each of grid signal with substantially identical signal enable
Between, and wherein during n-th cut-off pulse wave greater than during one (N-1) a cut-off pulse wave, N is grid line number and is greater than 1
Positive integer.
2. driving method according to claim 1, which is characterized in that those periods of those source electrode initial signal pulse waves with
Those periods of those grid enable signal pulse waves have sequentially and one-to-one corresponding relationship.
3. a kind of display device characterized by comprising
One source driver is electrically connected multiple data lines；
One gate drivers are electrically connected a plurality of grid line；And
Time schedule controller, to sequentially export multiple source electrode initial signal pulse waves to the source electrode driver and sequentially export it is more
A grid enable signal pulse wave is to the gate drivers；
Wherein the gate drivers are sequentially to export multiple grid signals to those grid according to those grid enable signal pulse waves
Polar curve, and the source electrode driver is sequentially to export those numbers of multiple data-signal enables according to those source electrode initial signal pulse waves
According to line, and
Wherein the sequence controller includes a source electrode initial signal pulse wave control assembly to control those source electrode initial signal arteries and veins
The sequential cycles of wave gradually lengthen；
The sequence controller additionally comprises a grid enable signal pulse wave control assembly to control those grid enable signal pulse waves
Sequential cycles gradually lengthen；
The sequence controller output each grid enable signal pulse wave the period include one work pulse wave during with one section
Only during pulse wave, wherein it is substantially identical during each of work pulse wave, there is essence to control each of grid signal
The identical signal enable time, and wherein during n-th cut-off pulse wave greater than during one (N-1) a cut-off pulse wave, N is grid
Polar curve number and be positive integer greater than 1.
4. display device according to claim 3, which is characterized in that those periods of those source electrode initial signal pulse waves with
Those periods of those grid enable signal pulse waves have sequentially and one-to-one corresponding relationship.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW105114615 | 2016-05-11 | ||
| TW105114615A TWI570700B (en) | 2016-05-11 | 2016-05-11 | Display device and method for driving the same |
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| CN105957493A CN105957493A (en) | 2016-09-21 |
| CN105957493B true CN105957493B (en) | 2018-12-11 |
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| TW (1) | TWI570700B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106297712B (en) * | 2016-09-26 | 2018-06-15 | 京东方科技集团股份有限公司 | A kind of display base plate and its driving method, display device |
| CN110517617A (en) * | 2018-05-22 | 2019-11-29 | 上海和辉光电有限公司 | A kind of pixel array control method and display panel |
| CN112365862B (en) * | 2020-11-09 | 2021-12-03 | 深圳市华星光电半导体显示技术有限公司 | Display panel brightness adjusting method and device |
| CN112687241B (en) * | 2020-12-30 | 2022-08-12 | 青岛信芯微电子科技股份有限公司 | Liquid crystal display screen, display method and method for determining driving signal |
| CN113516938B (en) * | 2021-06-23 | 2024-03-26 | 惠科股份有限公司 | Driving circuit and driving method of display panel and display device |
| CN116686039A (en) * | 2021-12-28 | 2023-09-01 | 京东方科技集团股份有限公司 | Source driver, source driving circuit, driving method of source driving circuit and display device |
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| CN105448250A (en) * | 2014-08-28 | 2016-03-30 | 奇景光电股份有限公司 | Gate driving method for displays and driving module |
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| TW552573B (en) * | 2001-08-21 | 2003-09-11 | Samsung Electronics Co Ltd | Liquid crystal display and driving method thereof |
| KR20040029724A (en) * | 2002-10-02 | 2004-04-08 | 삼성전자주식회사 | Liquid crystal display |
| TWI253051B (en) * | 2004-10-28 | 2006-04-11 | Quanta Display Inc | Gate driving method and circuit for liquid crystal display |
| CN101071545A (en) * | 2006-05-12 | 2007-11-14 | 奇美电子股份有限公司 | Liquid crystal display device and its driving method |
| EP2148319A4 (en) * | 2007-04-27 | 2011-05-04 | Sharp Kk | Liquid crystal display device |
| TWI410941B (en) * | 2009-03-24 | 2013-10-01 | Au Optronics Corp | Liquid crystal display capable of reducing image flicker and method for driving the same |
| TWI490846B (en) * | 2013-03-18 | 2015-07-01 | Chunghwa Picture Tubes Ltd | Display apparatus and driving method for display panel thereof |
| CN103177683B (en) * | 2013-04-02 | 2016-02-03 | 华映视讯（吴江）有限公司 | Display device and displaying panel driving method thereof |
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| CN103810961A (en) * | 2012-11-13 | 2014-05-21 | 乐金显示有限公司 | Display device and method of compensating for data charge deviation thereof |
| CN105448250A (en) * | 2014-08-28 | 2016-03-30 | 奇景光电股份有限公司 | Gate driving method for displays and driving module |
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| Publication number | Publication date |
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| TW201740362A (en) | 2017-11-16 |
| TWI570700B (en) | 2017-02-11 |
| CN105957493A (en) | 2016-09-21 |
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