CN105957493A - Display device and driving method thereof - Google Patents

Display device and driving method thereof Download PDF

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Publication number
CN105957493A
CN105957493A CN201610556913.0A CN201610556913A CN105957493A CN 105957493 A CN105957493 A CN 105957493A CN 201610556913 A CN201610556913 A CN 201610556913A CN 105957493 A CN105957493 A CN 105957493A
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pulse wave
during
those
source electrode
cut
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CN105957493B (en
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黄圣芫
郑晓鍾
张文地
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AU Optronics Corp
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AU Optronics Corp
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    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control 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
    • G09G3/34Control 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
    • G09G3/36Control 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
    • G09G3/3611Control of matrices with row and column drivers
    • G09G3/3648Control of matrices with row and column drivers using an active matrix

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

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

Display device and driving method thereof
Technical field
The present invention is related to a kind of display device and driving method thereof.
Background technology
Along with the raising of liquid crystal display (Liquid Crystal Display, LCD) resolution, gate line is corresponding Ground increases, with pixel corresponding in controlling panel of LCD.But, owing to gate line number increases, Every gate line time that can be unlocked shortens, and reduces with to pixel charging time, and panel of LCD The load of interior active area increases, and causes pixel to fill fully charged or by mistake, causes display quality to decline Or display is abnormal.
From the above, refer to Fig. 1, be the schematic diagram showing LCD type structure.In Fig. 1, Active-matrix district 104 has tetra-regions of A, B, C and D, and wherein A district is to export near driver Starting point, receives data signal and signal the earliest, B district be distance sources driver 102 farther out One end, C district is distance gate drivers 103 one end farther out, and D district is apart from gate drivers 103 relatively Remote and distance sources driver 102 is farther out.When the source electrode driver 102 of liquid crystal panel is by active-matrix district During the A district of 104 to B district sequentially outputting data signals, because RC load causes data signal in distance sources Driver 102 B district, one end farther out can produce delay effect, causes the undercharge of display.Work as grid Driver 103 exports signal when the A district in active-matrix district 104 to C district, also because RC Load makes signal produce impact in the C district of distance gate drivers 103 relatively far-end so that grid Line is closed and not exclusively is occurred to fill phenomenon by mistake, causes the color range mistake of display.And in large scale display floater, The problem that D district display quality declines or display is abnormal in active-matrix district 104 becomes apparent from.
In order to solve the problems referred to above, association area seeks solution, present invention the most painstakingly A purpose be a kind of display device and driving method thereof to be provided, is using and described in improvement, be present in prior art In problem.
Summary of the invention
Summary of the invention aims to provide the simplification summary of this disclosure, so that this disclosure is possessed by reader Basic understanding.The complete overview of this summary of the invention not this disclosure, and it is not intended to pointing out this The key/critical element of inventive embodiments or define the scope of the present invention.
One technology aspect of present invention is about a kind of display-apparatus driving method, wherein display device bag Including source electrode driver, gate drivers and active array district, this driving method includes being sequentially provided multiple source Pole initial signal pulse wave, to source electrode driver, sequentially exports multiple data signal extremely in order to control source class driver Active array district;And it is sequentially provided multiple grid enable signal pulse wave to gate drivers, in order to control gate Driver sequentially exports multiple signal to active array district;The wherein cycle of source electrode initial signal pulse wave Gradually lengthen.
According to another embodiment of the present invention, the sequential cycles of its grid enable signal pulse wave in above-mentioned driving method Gradually lengthen.
According to another embodiment of the present invention, the cycle of above-mentioned each grid enable signal pulse wave includes work pulse wave During period and cut-off pulse wave, substantially identical during each of which work pulse wave, in order to control each grid letter Number there is the substantially identical signal enable time, and wherein individual more than (N-1) during n-th cut-off pulse wave During cut-off pulse wave, N is gate line number and is the positive integer more than 1.
According to another embodiment of the present invention, the n-th cut-off pulse wave phase in above-mentioned grid enable signal pulse wave Between during (N-1) individual cut-off pulse wave there is a relation: during n-th cut-off pulse wave=(2/ (N+1)) * the (N-1), during individual cut-off pulse wave, wherein N is gate line quantity.
According to yet another embodiment of the invention, in above-mentioned driving method, the cycle of source electrode initial signal pulse wave and grid The cycle of ultimate attainment energy signal pulse wave has sequentially and man-to-man corresponding relation.
For reaching above-mentioned purpose, another technology aspect of present invention is about a kind of display device.Above-mentioned aobvious Showing device, including source electrode driver, gate drivers and time schedule controller.Source electrode driver is electrically connected with many Data line, gate drivers is electrically connected with a plurality of gate line.Time schedule controller sequentially exports multiple source electrode and rises Beginning signal pulse wave is to source electrode driver and sequentially exports multiple grid enable signal pulse wave to gate drivers. Wherein, gate drivers sequentially exports multiple signal to gate line according to grid enable signal pulse wave, and Source electrode driver sequentially exports multiple data signal enable data wire in order to foundation source electrode initial signal pulse wave, and Wherein time schedule controller comprises source electrode initial signal pulse wave control assembly to control source electrode initial signal pulse wave Sequential cycles gradually lengthens.
According to another embodiment of the present invention, wherein, time schedule controller additionally comprises the control of grid enable signal pulse wave Assembly gradually lengthens with the sequential cycles of control gate enable signal pulse wave.
According to another embodiment of the present invention, the cycle of each grid enable signal pulse wave of time schedule controller output Including during work pulse wave with cut-off pulse wave during, each of which work pulse wave during substantially identical, in order to control Make each signal and there is the substantially identical signal enable time, and wherein during n-th cut-off pulse wave During (N-1) individual cut-off pulse wave, N is gate line number and is the positive integer more than 1.
According to another embodiment of the present invention, the in the grid enable signal pulse wave of above-mentioned time schedule controller output With during (N-1) individual cut-off pulse wave, there is a relation during N number of cut-off pulse wave: n-th ends the pulse wave phase Between=(2/ (N+1)) * the (N-1) individual cut-off pulse wave during, wherein N is gate line quantity.
According to yet another embodiment of the invention, in above-mentioned display device, the cycle of source electrode initial signal pulse wave and grid The cycle of ultimate attainment energy signal pulse wave has sequentially and man-to-man corresponding relation.
Therefore, according to the technology contents of the present invention, the embodiment of the present invention by provide a kind of display device and Driving method, uses and improves the problem that signal causes data to fill because of transmission delay by mistake, and can improve data The incorrect phenomenon causing undercharge of signal level.
After refering to following description, persond having ordinary knowledge in the technical field of the present invention works as can be easily Understand the essence spirit of the present invention and other goals of the invention, and the technology used in the present invention means and enforcement Aspect.
Accompanying drawing explanation
For the above and other purpose of the present invention, feature, advantage can be become apparent with embodiment, appended Graphic is described as follows:
Fig. 1 is the schematic diagram illustrating a kind of display device according to one embodiment of the invention.
Fig. 2 is the drive waveforms schematic diagram illustrating a kind of undercharge.
Fig. 3 is the drive waveforms schematic diagram illustrating a kind of gate line incompetence.
Fig. 4 is the schematic diagram of the drive waveforms illustrating the embodiment of the present invention.
Wherein, reference:
101: time schedule controller
102: source electrode driver
103: gate drivers
104: active-matrix district
105, STB: source electrode initial signal pulse wave
106, Data: data signal
107, OE: grid enable signal pulse wave
108: data wire
109: gate line
201: undercharge phenomenon
301: fill phenomenon by mistake
G: nth bar signal
Article G: the (n+1)th, signal
T1, t1 (1)~t1 (N): data signal output time
T2: during work pulse wave
T3, t3 (1)~t3 (N): during cut-off pulse wave
Detailed description of the invention
In order to the narration making this disclosure is more detailed with complete, below for the enforcement aspect of the present invention Illustrative description is proposed with specific embodiment;But this not implements or uses the specific embodiment of the invention Unique forms.Embodiment covers multiple specific embodiment feature and in order to construction with operation these The method step of specific embodiment and its order.But, other specific embodiments also can be utilized identical to reach Or the function of equalization and sequence of steps.
Unless this specification is defined otherwise, belonging to the implication of science and technology vocabulary used herein and the present invention Technical field has usually intellectual understood and usual same meaning.Additionally, in discord context punching When prominent, the singular noun used by this specification contains the complex number type of this noun;And multiple names used Also the odd number type of this noun is contained during word.
Load, by improving the inside RC of display device, the delay effect caused, and then make data signal produce Undercharge or by mistake fill impact.The driving mould of data signal is adjusted by this display device and driving method thereof Formula, not enough with far-end pixel data signal integrity in reducing panel, make display picture color range mistake produce bright Concealed wire problem.To come in detail with subsequent embodiment about the display device of the present invention and the content of driving method thereof Introduce.
In Fig. 2, source electrode initial signal pulse wave (STB) is used for controlling the output time (t1) of each data signal And then determine each data signal (Data) charging interval length.But, when grid enable signal pulse wave (OE) During the opening time deficiency of control gate polar curve, during the pulse wave that i.e. works, (t2) is too short, will cause data signal electricity Pressure not yet charges to preferable level, and grid enable signal pulse wave (OE) i.e. control gate polar curve enters closed mode, That is enter during cut-off pulse wave (t3), cause data signal undercharge as shown in solid box 201 in Fig. 2 Phenomenon, and then make outputting data signals level incorrect, cause the color range mistake of display.
In order to solve the problem of above-mentioned undercharge, another driving method is more proposed as it is shown on figure 3, grid in figure During the work pulse wave of ultimate attainment energy signal pulse wave (OE), (t2) extends to avoid the gate line opening time not enough, this Time distance gate drivers nth bar signal farther out (G opens nth bar gate line, but negative because of RC During carrying delay relation and ending pulse wave, (t3) time is too short, causes nth bar gate line not yet to close completely, Article (n+1)th, signal (Gn+1) i.e. controls (n+1)th gate line and continues unlatching so that nth bar grid The number that pixel on polar curve is received because of the pixel being not completely turned off being charged on (n+1)th gate line by mistake The number of it is believed that (Data) voltage, causes filling phenomenon as shown in solid box 301 in Fig. 3 so that display level by mistake Mistake.In order to increase the time of grid enable signal pulse wave (OE) enable so that at data signal output time (t1) in the case of fixing, have compressed during cut-off pulse wave (t3), manifesting this type of drive still has and improves space.
The present invention separately proposes the driving method of an embodiment and uses the undercharge solving above-mentioned generation and fill by mistake Phenomenon also can the framework of mat display device as shown in Figure 1 perform, but, driving method do not limit by The element of display device performs, and following example are only in order to one of implementation that the present invention is described.Please join According to the LCD type structure of Fig. 1 and Fig. 4, Fig. 1 comprise time schedule controller 101, source electrode driver 102, Gate drivers 103 and active-matrix district 104, wherein comprise N bar gate line 109, M data line 108 and multiple pixels arranged in arrays.Time schedule controller 101 output signal 105,106 to source electrode Driver 102, and output signal 107 to gate drivers 103.The number that this signal 105 illustrates for Fig. 4 The number of it is believed that (Data), source electrode initial signal pulse wave (STB) that signal 106 illustrates for Fig. 4, signal 107 is figure Grid enable signal pulse wave (OE) that 4 illustrate, wherein source electrode initial signal pulse wave (STB) is believed with grid enable Ripple (OE) of feeling the pulse has identical length cycle time.Gate drivers 103 is according to grid enable signal pulse wave (OE) sequentially output signal is with the gate line 109 corresponding to unlatching, and source electrode driver 102 is according to source electrode Initial signal pulse wave (STB) sequentially exports multiple data signal (Data) to a plurality of data lines 108, in order to sequentially Data signal (Data) is write in active-matrix district 104 pixel corresponding to gate line that is sequentially unlocked, with Show picture to be presented.
In detail, when time schedule controller 101 exports by the data signal of source electrode initial signal pulse wave (STB) Between (t1) control each open gate line in pixel data signal (Data) latch the time.Separately, sequential Controller 101 also sends grid enable signal pulse wave (OE), the cycle of each grid enable signal pulse wave (OE) Including during (t2) during work pulse wave and cut-off pulse wave (t3).During each work pulse wave, (t2) is raster data model When device 103 exports signal to open unlatching or the enable of the string pixel corresponding to a gate line 109 Between so that data signal (Data) can write or be shown in string picture corresponding in active-matrix district 104 In element, wherein each work arteries and veins in (frame) grid enable signal pulse wave (OE) during a picture or frame During ripple, (t2) fixes, and the data signal needed for its time span enough makes pixel charges to required voltage level, And be adjusted by each source electrode initial signal pulse wave (STB) and the most gradually lengthen cycle time, so it is sent to The data signal output of pixel on the gate line of distance source electrode driver 102 more far-end in active-matrix district 104 Time (t1) increases, such as in active-matrix district 104, source electrode initial signal pulse wave (STB) cycle in B district is more than Source electrode initial signal pulse wave (STB) cycle in A district, that is source electrode initial signal pulse wave (STB) data signal is defeated Go out time t1 (N) to rise more than source electrode initial signal pulse wave (STB) data signal output time t1 (N-1), source electrode Beginning signal pulse wave (STB) data signal output time t1 (N-1) is more than source electrode initial signal pulse wave (STB) data Signal output time t1 (N-2) ... source electrode initial signal pulse wave (STB) data signal output time t1 (2) More than source electrode initial signal pulse wave (STB) data signal output time t1 (1), to avoid because of RC load effect Remote data signal (Data) the undercharge phenomenon produced occurs.
Additionally, along with each source electrode initial signal pulse wave (STB) sequential cycles gradually lengthens, to control far-end Columns data signal (Data) latches time lengthening, it is to avoid remote data signal is charged by RC load effect Not enough.In the case of during the work pulse wave of grid enable signal pulse wave (OE), (t2) is fixing and sufficiently long, Gate line 109 opening time is constant, but corresponding gate line 109 shut-in time will extend increase therewith, make During obtaining the cut-off pulse wave of Article 2 gate line 109, (t3 (the 2)) time is more than the cut-off of Article 1 gate line 109 During pulse wave (t3 (1)), and can be during the cut-off pulse wave of the last item gate line 109 as seen from Figure 4 (t3 (N)) Will be the longest, wherein multiple grids enable signal pulse wave (OE) of (frame) during a picture or frame During this (N-1) individual cut-off pulse wave, there is following relation during middle n-th cut-off pulse wave: n-th is cut During only during pulse wave=(2/ (N+1)) * the (N-1) individual cut-off pulse wave, use solution far-end gate line 109 because of The RC effect that is likely to occur and cause the incomplete problem of closedown to achieve a solution, problem of by mistake filling also can obtain and change Kind.
Therefore, the driving method of the proposed display device of this case comprises and is sequentially provided multiple source by time schedule controller Pole initial signal pulse wave and data signal are to source electrode driver, and wherein source electrode initial signal pulse wave is in order to control number The output time of the number of it is believed that, and the Cycle Length of multiple source electrode initial signal pulse wave has cumulative trend, separately Outer time schedule controller is sequentially provided grid enable signal pulse wave to gate drivers, gate drivers foundation grid Enable signal pulse wave is sequentially provided signal to be believed to corresponding gate line, source electrode driver according to source electrode is initial Ripple of feeling the pulse provides multiple data signals multiple data wires that the pixel to the corresponding gate line opened is connected. Wherein, the cycle of each grid enable signal pulse wave comprise during work pulse wave with cut-off pulse wave during, Yu Yi In multiple grid enable signal pulse waves during frame, identical or fixing during multiple work pulse waves, and grid Time span during multiple cut-off pulse waves of enable signal pulse wave is more and more longer, thereby because of RC load effect Remote data signal (Data) undercharge that should produce or fill phenomenon by mistake and obtained improvement.
Although disclosing the specific embodiment of the present invention above in embodiment, so it is not limited to this Bright, persond having ordinary knowledge in the technical field of the present invention, do not departing from principle and the spirit of the present invention Under situation, when it being carried out various change and modification, therefore protection scope of the present invention is when with subsidiary application The scope of the claims defined person be as the criterion.

Claims (10)

1. a driving method, in order to drive a display device, this display device include one source driver, One gate drivers and an active array district, it is characterised in that this driving method comprises the following steps:
It is sequentially provided multiple source electrode initial signal pulse wave to this source electrode driver, in order to control this source electrode driver Sequentially export multiple data signal to this active array district;And
It is sequentially provided multiple grid enable signal pulse wave to this gate drivers, in order to control this gate drivers Sequentially export multiple signal to this active array district;
Wherein the sequential cycles of those source electrode initial signal pulse waves gradually lengthens.
Driving method the most according to claim 1, it is characterised in that those grid enable signal arteries and veins The sequential cycles of ripple gradually lengthens.
Driving method the most according to claim 2, it is characterised in that those grid enables each are believed Feel the pulse this cycle of ripple include during a work pulse wave with a cut-off pulse wave during, those work arteries and veins of each of which During ripple substantially identical, in order to control those signals each, there is the substantially identical signal enable time, And more than during one (N-1) individual cut-off pulse wave during wherein a n-th ends pulse wave, N is gate line number And be the positive integer more than 1.
Driving method the most according to claim 3, it is characterised in that those grid enable signal arteries and veins During this (N-1) individual cut-off pulse wave, there is following relation during this n-th cut-off pulse wave in ripple: the During N number of cut-off pulse wave=(2/ (N+1)) * the (N-1) individual cut-off pulse wave during, wherein N is gate line quantity.
Driving method the most according to claim 2, it is characterised in that those source electrode initial signal arteries and veins Those cycles of ripple had sequentially and man-to-man corresponding with those cycles of those grid enable signal pulse waves Relation.
6. a display device, it is characterised in that including:
One source driver is electrically connected with a plurality of data lines;
One gate drivers is electrically connected with a plurality of gate line;And
Time schedule controller, in order to sequentially export multiple source electrode initial signal pulse wave to this source electrode driver and Sequentially export multiple grid enable signal pulse wave to this gate drivers;
Wherein this gate drivers is in order to sequentially to export multiple grid letter according to those grid enable signal pulse waves Number to those gate lines, and this source electrode driver is in order to sequentially to export many according to those source electrode initial signal pulse waves Individual those data wires of data signal enable, and
Wherein this time schedule controller comprises a source electrode initial signal pulse wave control assembly in order to control those source electrodes The sequential cycles of initial signal pulse wave gradually lengthens.
7. the display device stated according to claim 6, it is characterised in that this time schedule controller additionally comprises Grid enable signal pulse wave controls assembly in order to control the sequential cycles of those grid enable signal pulse waves gradually Lengthen.
Display device the most according to claim 7, it is characterised in that the output of this time schedule controller This cycle of this grid enable signal pulse wave each include during a work pulse wave with a cut-off pulse wave during, its In substantially identical during those work pulse waves each, have substantially identical in order to control those signals each The signal enable time, and wherein during a n-th cut-off pulse wave more than one (N-1) individual cut-off pulse wave phase Between, N is gate line number and is the positive integer more than 1.
Display device the most according to claim 8, it is characterised in that the output of this time schedule controller In this grid enable signal pulse wave this n-th cut-off pulse wave during with this (N-1) individual cut-off pulse wave during There is following relation: during n-th cut-off pulse wave=(2/ (N+1)) * the (N-1) individual cut-off pulse wave during, its Middle N is gate line quantity.
Display device the most according to claim 7, it is characterised in that those source electrode initial signal arteries and veins Those cycles of ripple had sequentially and man-to-man corresponding with those cycles of those grid enable signal pulse waves Relation.
CN201610556913.0A 2016-05-11 2016-07-15 Display device and driving method thereof Active CN105957493B (en)

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CN106297712A (en) * 2016-09-26 2017-01-04 京东方科技集团股份有限公司 A kind of display base plate and 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
CN112365862A (en) * 2020-11-09 2021-02-12 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
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CN105957493B (en) 2018-12-11
TWI570700B (en) 2017-02-11

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