CN104678626B - A kind of liquid crystal display, its driving method and display device - Google Patents
A kind of liquid crystal display, its driving method and display device Download PDFInfo
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- CN104678626B CN104678626B CN201510079258.XA CN201510079258A CN104678626B CN 104678626 B CN104678626 B CN 104678626B CN 201510079258 A CN201510079258 A CN 201510079258A CN 104678626 B CN104678626 B CN 104678626B
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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
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- Crystallography & Structural Chemistry (AREA)
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- Computer Hardware Design (AREA)
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- Liquid Crystal Display Device Control (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
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Abstract
The invention discloses a kind of liquid crystal display, its driving method and display device, include the compensating line with public electrode and/or public electrode wire formation storage capacitance due to liquid crystal display, and the size and polarity for the data-signal being carried according to current Source drive on each data wire determine thermal compensation signal, and the thermal compensation signal of determination is supplied to the compensating module of compensating line.Therefore, when the data-signal on data wire inverts in polarity, during prevent the change of the voltage on public electrode is from cancelling out each other, compensating module determines the thermal compensation signal being applied on compensating line according to the size and polarity of the data-signal on current each data wire, so as to offset the change of the voltage caused by the voltage change on pixel electrode on public electrode using the change of the voltage caused by the voltage change on compensating line on public electrode, so that the voltage stabilization on public electrode, and then the display picture of liquid crystal display is avoided to flash, the problems such as image retention etc. is abnormal.
Description
Technical field
The present invention relates to display technology field, espespecially a kind of liquid crystal display, its driving method and display device.
Background technology
With the development of Display Technique, liquid crystal display and display of organic electroluminescence by its each the advantages of into
For into two big main products of current display field.
Liquid crystal display, it is by distinguishing on-load voltage, pixel electrode and public electrode to pixel electrode and public electrode
Between the electric field controls liquid crystal molecule rotation that is formed, liquid crystal molecule is modulated to the backlight of transmission, it is shone with different light intensity
It is mapped in color film layer, color film layer is different to the light intensity permeability of different spectral bands, and the light for finally showing required color is realized
Display.
In a liquid crystal display, how to improve the display quality of liquid crystal display is technical problem urgently to be resolved hurrily.
The content of the invention
The embodiments of the invention provide a kind of liquid crystal display, its driving method and display device, to avoid liquid crystal
Show that the problems such as flicker, image retention and display GTG exception occurs in the display picture of device.
The embodiments of the invention provide a kind of liquid crystal display, including Source drive, display panel and compensating module；Its
In,
The display panel has public electrode, the public electrode wire to the public electrode transmission signal, some numbers
According to line, and form with the public electrode and/or the public electrode wire compensating line of storage capacitance；
The Source drive is used to apply data-signal to each data wire；
The compensating module is used for the data-signal being carried according to presently described Source drive on each data wire
Size and polarity determine thermal compensation signal, and the thermal compensation signal of determination is supplied to the compensating line.
Correspondingly, the embodiment of the present invention additionally provides the driving method of any of the above-described kind of liquid crystal display, including：
The size of data-signal on each data wire is carried according to presently described Source drive and polarity determines to mend
Repay signal；
The thermal compensation signal of determination is supplied to the compensating line.
Correspondingly, the embodiment of the present invention additionally provides a kind of display device, any of the above-described kind provided in an embodiment of the present invention
Liquid crystal display.
Above-mentioned liquid crystal display, its driving method and display device provided in an embodiment of the present invention, due to liquid crystal display
Include the compensating line that storage capacitance is formed with public electrode and/or public electrode wire, and loaded according to current Source drive
The size and polarity of data-signal on each data wire determine thermal compensation signal, and the thermal compensation signal of determination is supplied into compensating line
Compensating module.Therefore, when the data-signal on data wire inverts in polarity so that the voltage change on pixel electrode is drawn
When the change of the voltage on public electrode risen can not cancel out each other, compensating module can be carried in respectively according to current Source drive
The size and polarity of data-signal on data wire determine the thermal compensation signal being applied on compensating line, so as to using on compensating line
Public electrode caused by the voltage change on pixel electrode is offset in the change of voltage caused by voltage change on public electrode
On voltage change so that the voltage stabilization on public electrode, so the display picture for improving liquid crystal display occur flicker,
The problems such as image retention and display GTG exception.
Brief description of the drawings
Fig. 1 a are one of structural representation of liquid crystal display provided in an embodiment of the present invention；
Fig. 1 b are the two of the structural representation of liquid crystal display provided in an embodiment of the present invention；
Fig. 1 c are the three of the structural representation of liquid crystal display provided in an embodiment of the present invention；
Fig. 1 d are the four of the structural representation of liquid crystal display provided in an embodiment of the present invention；
Fig. 1 e are the five of the structural representation of liquid crystal display provided in an embodiment of the present invention；
Fig. 2 is the structural representation of compensating module provided in an embodiment of the present invention；
Fig. 3 is the concrete structure schematic diagram of compensating module provided in an embodiment of the present invention；
Fig. 4 a are the six of the structural representation of liquid crystal display provided in an embodiment of the present invention；
Fig. 4 b are the seven of the structural representation of liquid crystal display provided in an embodiment of the present invention；
Fig. 5 is the schematic flow sheet of the driving method of liquid crystal display provided in an embodiment of the present invention；
Fig. 6 is the structural representation of display device provided in an embodiment of the present invention.
Embodiment
Found by analysis, in available liquid crystal display, if the electric capacity of transistor is larger in liquid crystal display, pixel electricity
Influence of the voltage to the voltage on public electrode on extremely is also larger, can cause liquid crystal display under specific display picture,
The change of voltage caused by the data pulse of voltage on pixel electrode on public electrode can not cancel out each other, and make public electrode
On voltage there is the ripple problems of too being raised and lowered, flashed so as to which the picture that liquid crystal display show can be caused to occur,
The problems such as image retention and display GTG exception, influence the display quality of liquid crystal display.
Therefore, in view of this, the embodiments of the invention provide a kind of liquid crystal display, its driving method and display device,
To avoid the display picture of liquid crystal display from the problems such as flicker, image retention and display GTG exception occur.
Below in conjunction with the accompanying drawings, to the tool of liquid crystal display provided in an embodiment of the present invention, its driving method and display device
Body embodiment is described in detail.
A kind of liquid crystal display provided in an embodiment of the present invention, as shown in Fig. 1 a to Fig. 1 e, including Source drive 1, display
Panel 2 and compensating module 3；Wherein,
Display panel 2 has public electrode 21, the public electrode wire 22 to the transmission signal of public electrode 21, some datas
Line D, and form with public electrode 21 and/or public electrode wire 22 compensating line 23 of storage capacitance；
Source drive 1 is used to apply data-signal to each data wire D；
Compensating module 3 is used for the size and polarity for the data-signal being carried according to current Source drive 1 on each data wire D
Thermal compensation signal is determined, and the thermal compensation signal of determination is supplied to compensating line 23.
Above-mentioned liquid crystal display provided in an embodiment of the present invention, due to including and public electrode and/or public electrode wire
The compensating line of storage capacitance is formed, and size and the pole of the data-signal on each data wire are carried according to current Source drive
Property determines thermal compensation signal, and the thermal compensation signal of determination is supplied to the compensating module of compensating line.Therefore, when the data on data wire
Signal inverts in polarity so that the change of the voltage caused by the voltage change on pixel electrode on public electrode can not phase
Mutually offset when, compensating module can be carried according to current Source drive the data-signal on each data wire size and polarity it is true
Surely the thermal compensation signal being applied on compensating line, so as to utilize the voltage caused by the voltage change on compensating line on public electrode
Change to offset the change of the voltage caused by the voltage change on pixel electrode on public electrode, so that the electricity on public electrode
Pressure is stable, and then the problems such as flicker, image retention and display GTG exception occurs in the display picture for improving liquid crystal display.
Specifically, in above-mentioned liquid crystal display provided in an embodiment of the present invention, as shown in Fig. 1 c and Fig. 1 d, compensating line 23
The effective display area domain (in figure within dotted line frame) of display panel 2 can be located at, or as illustrated in figs. 1A and ib, compensating line 23
The neighboring area (in figure outside dotted line frame) of display panel 2 can be located at, or as shown in fig. le, compensating line 23 can also be located at aobvious
Show the effective display area domain (in figure within dotted line frame) and neighboring area (in figure outside dotted line frame) of panel 2, as long as ensureing compensation
The setting that line 23 can form storage capacitance with public electrode 21 and/or public electrode wire 22 belongs to protection model of the invention
Enclose, be not limited thereto.
It should be noted that in above-mentioned liquid crystal display provided in an embodiment of the present invention, public electrode can be by covering
The monoblock planar structure composition of all pixels, naturally it is also possible to be made up of the block structure of polylith covering part pixel, herein
It is not construed as limiting.
In the specific implementation, above-mentioned compensating module provided in an embodiment of the present invention can be integrated in same core with Source drive
On piece, it can also respectively be integrated on different chips, be not limited thereto.
Further, in above-mentioned liquid crystal display provided in an embodiment of the present invention, compensating module determines that thermal compensation signal has
Body is：
According to be currently applied to polarity on all data wires be positive data-signal corresponding to grey decision-making average value A with
Polarity is the average value B of the grey decision-making corresponding to negative data-signal, and | A-B |, determine thermal compensation signal；Wherein, compensation letter
Number size be equal to grey decision-making | A-B | when corresponding signal magnitude of voltage, if A ＞ B, the polarity of thermal compensation signal be it is negative,
If A ＜ B, the polarity of thermal compensation signal is just.
It should be noted that here | A-B | refer to the average value A of grey decision-making of the polarity corresponding to positive data-signal
Absolute value with polarity for the average value B of the grey decision-making corresponding to negative data-signal difference.Further, since grey decision-making is general
For on the occasion of, therefore above-mentioned A and B be equally on the occasion of.
Further, in above-mentioned liquid crystal display provided in an embodiment of the present invention, according to being currently applied to all data
Polarity is the average value A of the grey decision-making corresponding to positive data-signal on line and polarity is GTG corresponding to negative data-signal
The average value B of value, when a=b, the change of the voltage caused by the voltage change on pixels illustrated electrode on public electrode can be with
Cancel out each other, it is not necessary to which compensating line is carried out, therefore now compensating module does not export thermal compensation signal to compensating line.
It is preferred that in above-mentioned liquid crystal display provided in an embodiment of the present invention, as shown in Fig. 2 compensating module 3, specifically
It can include：
Computing module 31, ash of the polarity corresponding to positive data-signal on all data wires is currently applied to for calculating
Average value Bs of the average value A of rank value with polarity for the grey decision-making corresponding to negative data-signal, and | A-B |；
Comparison module 32, for comparing A and B size；
Generation module 33, for generating thermal compensation signal according to comparative result and result of calculation, and by the thermal compensation signal of generation
It is supplied to compensating line 23；Wherein, the size of thermal compensation signal is equal to grey decision-making | A-B | when corresponding signal magnitude of voltage, in A
During ＞ B, the polarity of thermal compensation signal is negative, and in A ＜ B, the polarity of thermal compensation signal is just.
It is preferred that in above-mentioned liquid crystal display provided in an embodiment of the present invention, as shown in figure 3, generation module 33, specifically
It can include：
Initial signal generates submodule 331, for basis | A-B | generation initial signal, and if during A ＞ B, initial signal
Polarity for just, if during A ＜ B, the polarity of first ringing is negative；
Anti-phase ratio circuit 332, for generating thermal compensation signal according to initial signal, and the thermal compensation signal of generation is supplied to
Compensating line 23.
Specifically, in the specific implementation, in above-mentioned liquid crystal display provided in an embodiment of the present invention, according to | A-B | it is raw
It is specifically as follows into initial signal：
According to | A-B | generation is with size | A-B | the corresponding data signal of grey decision-making, then pass through digital analog converter again
The data signal is converted into analog signal, so as to generate initial signal.
It is preferred that in above-mentioned liquid crystal display provided in an embodiment of the present invention, as shown in figure 3, anti-phase ratio circuit
332, it can specifically include：Inverting amplifier 3321, first resistor R1, second resistance R2 and 3rd resistor R3；Wherein,
First resistor R1 be series at initial signal generation submodule 331 and inverting amplifier 3321 negative-phase input it
Between；
Second resistance R2 is series between negative-phase input and the output end of inverting amplifier 3321；
3rd resistor R3 is series between the normal phase input end of earth terminal and inverting amplifier 3321；
The output end of inverting amplifier 3321 is connected with compensating line 23.
Further, in above-mentioned liquid crystal display provided in an embodiment of the present invention, first resistor, second resistance and the 3rd
The Standard resistance range of resistance generally in a kilo-ohm level, is not limited thereto.
Further, in above-mentioned liquid crystal display provided in an embodiment of the present invention, the resistance of first resistor is equal to second
The resistance of resistance.The size i.e. size that the size of so thermal compensation signal is equal to initial signal is | A-B | grey decision-making corresponding to
Signal size, i.e., thermal compensation signal press 1:1 proportional compensation, compensating module extra again need not be converted, can be patrolled with simplify control
Volume, reduce development difficulty.
It the above is only the concrete structure for illustrating anti-phase ratio circuit in liquid crystal display, it is in the specific implementation, anti-phase
The concrete structure of ratio circuit is not limited to said structure provided in an embodiment of the present invention, can also be skilled person will appreciate that
Other structures, do not limit herein.
It is preferred that in above-mentioned liquid crystal display provided in an embodiment of the present invention, as shown in Figure 1a, compensating line 23 can be set
Put in the side of public electrode 21, or as shown in Figure 1 b, compensating line 23 can be arranged on more sides of public electrode 21, herein not
It is construed as limiting, in order to be compensated to whole public electrode, it is preferred that as shown in fig. 4 a, compensating line 23 surrounds public electrode 21, i.e.,
Compensating line 23 is arranged on every side of public electrode 21.
Further, in above-mentioned liquid crystal display provided in an embodiment of the present invention, as shown in Fig. 1 a, Fig. 1 b and Fig. 4 b,
Compensating line 23 can be located at the outside of public electrode wire 22, be not limited thereto.
In the specific implementation, data wire and public electrode are normally at the viewing area of display panel, and public electrode wire leads to
The neighboring area for crossing encirclement viewing area extends to viewing area to public electrode transmission common electrode signal, specific public electrode
It is same as the prior art with the setting of public electrode wire, it will not be repeated here.Therefore, in the specific implementation, due to public electrode
It is to be located at viewing area, compensating line will surround public electrode, compensating line can be arranged on into neighboring area.
Further, in the above-mentioned liquid crystal display that inventive embodiments provide, compensating line is arranged to same layer with data wire
Same material.So in the preparation, compensating line and data wire can be formed by a patterning processes, it is new so as to be increased without
Preparation technology, it is only necessary to which the composition of film layer corresponding to change can be achieved, and simplifies processing step, saves production cost, improve
Production efficiency.
Based on same inventive concept, the embodiment of the present invention additionally provides the driving method of any of the above-described kind of liquid crystal display,
As shown in figure 5, it may comprise steps of：
S501, the size for being carried according to current Source drive the data-signal on each data wire and polarity determine compensation letter
Number；
S502, the thermal compensation signal of determination is supplied to compensating line.
Based on same inventive concept, the embodiment of the present invention additionally provides a kind of display device 100, as shown in fig. 6, including this
The above-mentioned liquid crystal display 10 that inventive embodiments provide.The display device can be：Mobile phone, tablet personal computer, television set, display
Any product or part with display function such as device, notebook computer, DPF, navigator.The implementation of the display device
The embodiment of above-mentioned liquid crystal display is may refer to, part is repeated and repeats no more.
A kind of liquid crystal display, its driving method and display device provided in an embodiment of the present invention, due to liquid crystal display
Include the compensating line that storage capacitance is formed with public electrode and/or public electrode wire, and loaded according to current Source drive
The size and polarity of data-signal on each data wire determine thermal compensation signal, and the thermal compensation signal of determination is supplied into compensating line
Compensating module.Therefore, when the data-signal on data wire inverts in polarity so that the voltage change on pixel electrode is drawn
When the change of the voltage on public electrode risen can not cancel out each other, compensating module can be carried in respectively according to current Source drive
The size and polarity of data-signal on data wire determine the thermal compensation signal being applied on compensating line, so as to using on compensating line
Public electrode caused by the voltage change on pixel electrode is offset in the change of voltage caused by voltage change on public electrode
On voltage change so that the voltage stabilization on public electrode, so the display picture for improving liquid crystal display occur flicker,
The problems such as image retention and display GTG exception.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these changes and modification.
Claims (10)
1. a kind of liquid crystal display, including Source drive, display panel and compensating module；Wherein,
The display panel has public electrode, the public electrode wire to the public electrode transmission signal and some datas
Line, and form with the public electrode and/or the public electrode wire compensating line of storage capacitance；
The Source drive is used to apply data-signal to each data wire；
The compensating module is used for the size for the data-signal being carried according to presently described Source drive on each data wire
Thermal compensation signal is determined with polarity, and the thermal compensation signal of determination is supplied to the compensating line.
2. liquid crystal display as claimed in claim 1, it is characterised in that the compensating module determines that thermal compensation signal is specially：
According to the average value A and polarity for being currently applied to grey decision-making of the polarity corresponding to positive data-signal on all data wires
For the average value B of the grey decision-making corresponding to negative data-signal, and | A-B |, determine the thermal compensation signal；Wherein, the benefit
The size for repaying signal is equal to grey decision-making | A-B | when corresponding signal magnitude of voltage, if A ＞ B, the pole of the thermal compensation signal
Property be negative, if A ＜ B, the polarity of the thermal compensation signal is just.
3. liquid crystal display as claimed in claim 2, it is characterised in that the compensating module, specifically include：
Computing module, GTG of the polarity corresponding to positive data-signal on all data wires is currently applied to for calculating
Average value Bs of the average value A of value with polarity for the grey decision-making corresponding to negative data-signal, and | A-B |；
Comparison module, for comparing A and B size；
Generation module, for generating thermal compensation signal according to comparative result and result of calculation, and the thermal compensation signal of generation is supplied to
The compensating line；Wherein, the size of the thermal compensation signal is equal to grey decision-making | A-B | when corresponding signal magnitude of voltage, in A
During ＞ B, the polarity of the thermal compensation signal is negative, and in A ＜ B, the polarity of the thermal compensation signal is just.
4. liquid crystal display as claimed in claim 3, it is characterised in that the generation module, specifically include：
Initial signal generates submodule, for basis | A-B | generation initial signal, and if during A ＞ B, the initial signal
Polarity is just, if during A ＜ B, the polarity of the initial signal is negative；
Anti-phase ratio circuit, for generating the thermal compensation signal according to the initial signal, and the thermal compensation signal of generation is provided
To the compensating line.
5. liquid crystal display as claimed in claim 4, it is characterised in that the anti-phase ratio circuit, specifically include：Anti-phase amplification
Device, first resistor, second resistance and 3rd resistor；Wherein,
The first resistor is series between the initial signal generation submodule and the negative-phase input of the inverting amplifier；
The second resistance is series between negative-phase input and the output end of the inverting amplifier；
The 3rd resistor is series between the normal phase input end of earth terminal and the inverting amplifier；
The output end of the inverting amplifier is connected with the compensating line.
6. liquid crystal display as claimed in claim 5, it is characterised in that the resistance of the first resistor is equal to the second resistance
Resistance.
7. the liquid crystal display as described in claim any one of 1-6, it is characterised in that the compensating line is located at the common electrical
The side of pole surrounds the public electrode；Or
The compensating line is located on the outside of the public electrode wire.
8. the liquid crystal display as described in claim any one of 1-6, it is characterised in that the compensating line is set with the data wire
It is set to same layer same material.
9. a kind of driving method of liquid crystal display as described in claim any one of 1-8, including：
The size of data-signal on each data wire is carried according to presently described Source drive and polarity determines compensation letter
Number；
The thermal compensation signal of determination is supplied to the compensating line.
10. a kind of display device, it is characterised in that including the liquid crystal display as described in claim any one of 1-8.
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| CN108267450A (en) * | 2018-02-28 | 2018-07-10 | 京东方科技集团股份有限公司 | Substrate detection apparatus and method |
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| CN109559691B (en) * | 2018-12-05 | 2020-12-29 | 惠科股份有限公司 | Display panel and display device |
| CN110010096B (en) * | 2019-04-19 | 2022-12-06 | 京东方科技集团股份有限公司 | Display panel, driving method thereof and display device |
| CN114530114A (en) * | 2022-04-24 | 2022-05-24 | 惠科股份有限公司 | Display screen, public voltage adjusting method and computer readable storage medium |
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| KR100847823B1 (en) * | 2003-12-04 | 2008-07-23 | 엘지디스플레이 주식회사 | The liquid crystal display device |
| KR101293569B1 (en) * | 2006-08-03 | 2013-08-06 | 삼성디스플레이 주식회사 | Flexible member and liquid crystal display device having the same |
| CN102054449A (en) * | 2009-10-30 | 2011-05-11 | 群康科技(深圳)有限公司 | Liquid crystal display device |
| KR101712015B1 (en) * | 2010-12-13 | 2017-03-13 | 엘지디스플레이 주식회사 | In-Plane Switching Mode LCD and method of driving the same |
| CN102903344B (en) * | 2012-09-27 | 2014-10-08 | 合肥京东方光电科技有限公司 | Public electrode voltage compensation method and device and time schedule controller |
| US9449567B2 (en) * | 2013-02-26 | 2016-09-20 | Au Optronics Corporation | Common voltage compensation in display apparatus |
| CN104347048B (en) * | 2014-11-21 | 2016-08-03 | 深圳市华星光电技术有限公司 | Display panels and gray scale voltage compensation method thereof |
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