CN102004346B - Liquid crystal display panel with compensable feed through effect - Google Patents
Liquid crystal display panel with compensable feed through effect Download PDFInfo
- Publication number
- CN102004346B CN102004346B CN2010105074639A CN201010507463A CN102004346B CN 102004346 B CN102004346 B CN 102004346B CN 2010105074639 A CN2010105074639 A CN 2010105074639A CN 201010507463 A CN201010507463 A CN 201010507463A CN 102004346 B CN102004346 B CN 102004346B
- Authority
- CN
- China
- Prior art keywords
- potential
- voltage
- data
- circuit
- preset
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The invention discloses a liquid crystal display panel with compensable feed through effect, which comprises a plurality of groups of pixels, a grid driving circuit, a data driving circuit and a gamma voltage generator. Each group of pixels comprises a first pixel and a second pixel. The first pixel and the second pixel share one data wire, and the first and second pixels are coupled to first and second grid wires respectively. When the grid driving circuit drives the first grid wire, the data driving circuit writes data into the first pixel, and then the gamma voltage generator provides positive and negative gamma voltage to the data driving circuit. When the grid driving circuit drives the first and second grid wires at the same time, the data driving circuit writes data into the second pixel, and then the gamma voltage generator provides positive and negative gamma voltage added with compensation potential to the data driving circuit.
Description
Technical field
The present invention relates to a kind of display panels, more particularly, relevant for a kind of influence that compensates feedthrough (feed-through) effect, to show the display panels of correct brightness.
Background technology
In display panels, when gate driver circuit drove a gate line, data drive circuit can write data to the pixel that is connected in this gate line through data line.Yet when gate driver circuit stopped to drive this gate line, the stored data of pixel that are connected in this gate line can receive the influence that the voltage on this gate line descends, and the feedthrough current potential (being referred to as the feedthrough effect) that descends.So, possibly cause display panels can't show correct brightness.
Summary of the invention
A purpose of the present invention is to provide a kind of influence that compensates the feedthrough effect, to show the display panels of correct brightness.
The present invention provides a kind of display panels that compensates the feedthrough effect.This display panels comprises many group pixels, a gate driver circuit, a data drive circuit, and a gamma voltage generator.Each the group pixel that should organize pixels comprises one first pixel more, and one second pixel.This first pixel comprises a first transistor, one first storage capacitors and one first liquid crystal capacitance.First end of this first transistor is coupled to a data line.The control end of this first transistor is coupled to a first grid polar curve.This first storage capacitors and this first liquid crystal capacitance are coupled between second end of a common voltage source and this first transistor.This second pixel comprises a transistor seconds, one second storage capacitors and one second liquid crystal capacitance.First end of this transistor seconds is coupled to second end of this first transistor.The control end of this transistor seconds is coupled to a second grid line.This second storage capacitors and this second liquid crystal capacitance are coupled between second end of this common voltage source and this transistor seconds.This gate driver circuit is used for driving this first grid polar curve and this second grid line.When this gate driver circuit drove this first grid polar curve, this data drive circuit write to this first pixel through this data line and this first transistor with one first data.When this gate driver circuit drove this first grid polar curve and this second grid line, this data drive circuit write to this second pixel through this data line, this first transistor and this transistor seconds with one second data.This gamma voltage generator is used to provide one first group of gamma voltage and gives this data drive circuit.This gamma voltage generator comprises one first bleeder circuit, one first commutation circuit, one second commutation circuit, and a control circuit.This first bleeder circuit is coupled between a first node and the Section Point.This first bleeder circuit is used for according to one second voltage on first voltage of 1 on this first node and this Section Point, produces current potential this first group of gamma voltage between this first voltage and this second voltage.This first commutation circuit is coupled to this first node.This second commutation circuit is coupled to this Section Point.This control circuit is used for when this data drive circuit writes these first data; Controlling this this first voltage of first commutation circuit switching is one first preset potential; And to switch this second voltage according to this second commutation circuit of the Polarity Control of these first data be a preset noble potential or a preset electronegative potential; And when this data drive circuit writes these second data; Switch this first voltage according to this first commutation circuit of the Polarity Control of these second data and add a compensation current potential, and control this second commutation circuit and switch this second voltage for should maybe adding this compensation current potential by preset electronegative potential by preset noble potential for this first preset potential or this first preset potential.
The present invention provides a kind of display panels that compensates the feedthrough effect in addition.This display panels comprises many group pixels, a gate driver circuit, a data drive circuit, and a gamma voltage generator.Each the group pixel that should organize pixels comprises one first pixel more, and one second pixel.This first pixel comprises a first transistor, one first storage capacitors and one first liquid crystal capacitance.First end of this first transistor is coupled to a data line.The control end of this first transistor is coupled to a first grid polar curve.This first storage capacitors and this first liquid crystal capacitance are coupled between second end of a common voltage source and this first transistor.This second pixel comprises a transistor seconds, one second storage capacitors and one second liquid crystal capacitance.First end of this transistor seconds is coupled to second end of this first transistor.The control end of this transistor seconds is coupled to a second grid line.This second storage capacitors and this second liquid crystal capacitance are coupled between second end of this common voltage source and this transistor seconds.This gate driver circuit is used for driving this first grid polar curve and this second grid line.When this gate driver circuit drove this first grid polar curve, this data drive circuit write to this first pixel through this data line and this first transistor with one first data.When this gate driver circuit drove this first grid polar curve and this second grid line, this data drive circuit write to this second pixel through this data line, this first transistor and this transistor seconds with one second data.This gamma voltage generator is used to provide one group of positive polarity gamma voltage and one group of negative polarity gamma voltage is given this data drive circuit.This gamma voltage generator comprises one first bleeder circuit, one first commutation circuit, one second bleeder circuit, one second commutation circuit, and a control circuit.This first bleeder circuit is coupled between a first node and the Section Point.This first bleeder circuit is used for according to one second voltage on first voltage of 1 on this first node and this Section Point, produces current potential this group positive polarity gamma voltage between this first voltage and this second voltage.The current potential of this second voltage equals a preset noble potential.This first commutation circuit is coupled to this first node.This second bleeder circuit is coupled between one the 3rd node and one the 4th node.This second bleeder circuit is used for according to one the 4th voltage on tertiary voltage on the 3rd node and the 4th node, produces current potential this group negative polarity gamma voltage between this tertiary voltage and the 4th voltage.The current potential of this tertiary voltage equals one first preset potential.This second commutation circuit is coupled to the 4th node.This control circuit is used for when this data drive circuit writes these first data; Controlling this this first voltage of first commutation circuit switching is one first preset potential; And controlling this second commutation circuit, to switch the 4th voltage be a preset electronegative potential; And when this data drive circuit writes these second data; Control this first commutation circuit and switch this first voltage and add a compensation current potential, and control this second commutation circuit and switch this second voltage for adding this compensation current potential by preset electronegative potential for this first preset potential.
Description of drawings
Fig. 1 is the synoptic diagram of the display panels of explanation semi-source pole driving architecture;
Fig. 2 is the synoptic diagram of the type of drive of the display panels of explanation semi-source pole driving architecture;
Fig. 3 and Fig. 4 are the synoptic diagram of the influence of the suffered feedthrough effect of explanation display panels;
Fig. 5 is the synoptic diagram of first embodiment of explanation display panels of the present invention;
Fig. 6 and Fig. 7 can show the synoptic diagram of correct brightness for explanation display panels of the present invention;
Fig. 8 is the synoptic diagram of second embodiment of explanation display panels of the present invention.
Wherein, Reference numeral
1,2, C end points 110 gate driver circuits
120 data drive circuits, 100,500,800 display panels
530,830 gamma voltage generators, 531,532,831 bleeder circuits
533,534,832,833 commutation circuits, 535,834 control circuits
C
S1, C
S2Storage capacitors C
L2, C
L2Liquid crystal capacitance
DA
1, DA
2, DA
INT1, DA
INT2, DA
11, DA
21, DA
12, DA
22Data
G
1～G
MGate lines G ROUP
1Pixel groups
P
1～P
4Node PIX
1, PIX
2Pixel
Q
1, Q
2Transistor S
1～S
NData line
T
1, T
2Period V
1～V
4, V
G1～V
GMVoltage
V
A1P～V
AXP, V
A1N～V
AXN, V
A1～V
AXGamma voltage
V
CPCompensation current potential V
COMCommon voltage
V
DC, V
DD, V
SSPreset potential V
FTThe feedthrough current potential
Embodiment
Please refer to Fig. 1.Fig. 1 is the synoptic diagram of the display panels 100 of explanation one semi-source pole driving architecture.Display panels 100 comprises many group pixels, gate driver circuit 110, data drive circuit 120, and gamma voltage generator 130.The similar of every group of pixel of many group pixels is with first group of pixel GROUP
1Illustrate first group of pixel GROUP
1Comprise pixel PIX
1With PIX
2Pixel PIX
1Comprise transistor Q
1, storage capacitors C
S1With liquid crystal capacitance C
L1Transistor Q
1First end be coupled to data line S
HTransistor Q
1Control end be coupled to gate lines G
JStorage capacitors C
S1With liquid crystal capacitance C
L1Be coupled to a common voltage source V
COMWith transistor Q
1Second end between.Pixel PIX
2Comprise transistor Q
2, storage capacitors C
S2With liquid crystal capacitance C
L2Transistor Q
2First end be coupled to transistor Q
1Second end.Transistor Q
2Control end be coupled to gate lines G
(J+1)Storage capacitors C
S2With liquid crystal capacitance C
L2Be coupled to common voltage source V
COMWith transistor Q
2Second end between.Gate driver circuit 110 is used to provide each gate lines G
1～G
MDrive signal, V
G1～V
GMRepresent gate lines G respectively
1～G
MOn voltage.Gamma voltage generator 130 is used to provide gamma voltage V
A1～V
AXGive data drive circuit 120.Data drive circuit 120 is used for according to gamma voltage V
A1～V
AX, through data line S
1～S
NWrite data to each pixel.
Please refer to Fig. 2.Fig. 2 is the synoptic diagram of the type of drive of explanation display panels 100.In Fig. 2, at period T
1In, gate driver circuit 110 provides gate drive signal to gate lines G simultaneously
JWith G
(J+1), and make transistor Q
1With Q
2Conducting.So, data drive circuit 120 is through data line S
H, transistor Q
1With Q
2Can be to storage capacitors C
S2Charging.In other words, this moment, data drive circuit 120 write data to pixel PIX
2(write pixel PIX to call in the following text
2Data be second data).At period T
2In, gate driver circuit 110 only provides gate drive signal to gate lines G
J, so transistor Q
1Conducting, and transistor Q
2Close.So, data drive circuit 120 is through data line S
H, transistor Q
1To storage capacitors C
S1Charging.In other words, this moment, data drive circuit 120 write data to pixel PIX
1(write pixel PIX to call in the following text
1Data be first data).Therefore, can know, through the illustrated type of drive of Fig. 2, pixel PIX by above-mentioned explanation
1With PIX
2Shared data line S
HIn other words, compared to general display panels, in the display panels 100 of semi-source pole driving architecture, can reduce the number of data line.
Please refer to Fig. 3 and Fig. 4.Fig. 3 and Fig. 4 are the synoptic diagram of the influence of the suffered feedthrough effect of explanation display panels 100.In Fig. 3 and Fig. 4, the data polarity of supposing display panels 100 is frame counter-rotating (frame inversion), and common voltage source V
COMThe voltage that is provided is a direct current common voltage V
COM, DA
1Remarked pixel PIX
1Stored data, DA
2Remarked pixel PIX
2Stored data.Shown in Figure 3 is the situation of strange frame (odd frame), and tentation data driving circuit 120 is in pixel PIX
1First data that write, and in pixel PIX
2Second data that write all equal DA
INT1, and the data polarity of each pixel of display panels 100 is a positive polarity at this moment.Period T in Fig. 3
1In, as 110 while of gate driver circuit driving grid line G
JWith G
(J+1)The time, data drive circuit 120 writes the second data (DA
INT1) to pixel PIX
2When getting into period T
2The time, gate driver circuit 110 switches to only driving grid line G
JThis moment pixel PIX
2Stored data DA
INT1Through transistor Q
2Stray capacitance receive voltage V
G (J+1)The influence of negative edge, and the feedthrough current potential V that descends
FTIn period T
2In, data drive circuit 120 writes the first data (DA
INT1) to pixel PIX
1As period T
2During end, pixel PIX
1Stored data DA
INT1Receive voltage V
GJThe influence of negative edge, and the feedthrough current potential V that descends
FTSo, pixel PIX
1Stored data become DA
11In addition, pixel PIX
2Stored data also receive voltage V
GJThe influence of negative edge, and the feedthrough current potential V that descends again
FTSo pixel PIX
2Stored data become DA
21Can know by above-mentioned explanation, though data drive circuit 120 is in pixel PIX
1First data (the DA that writes
INT1) and in pixel PIX
2Second data (the DA that writes
INT1) identical, but because pixel PIX
1(a feedthrough current potential V descends to receive a feedthrough effect
FT) influence, and pixel PIX
2But receive feedthrough effect (decline feedthrough current potential 2V twice
FT) influence, so pixel PIX
2Stored data DA
21Be not equal to pixel PIX
1Stored data DA
11Shown in Figure 4 is the situation of even frame (even frame), and the data polarity of each pixel of display panels 100 is a negative polarity at this moment.In like manner, though data drive circuit 120 in pixel PIX
1First data that write, and in pixel PIX
2Second data that write all equal (DA
INT2), but because pixel PIX
1(a feedthrough current potential V descends to receive a feedthrough effect
FT) influence, and pixel PIX
2But receive feedthrough effect (decline feedthrough current potential 2V twice
FT) influence, so pixel PIX
2Stored data (DA
22) be not equal to pixel PIX
1Stored data (DA
12).
Therefore, can know, through the illustrated type of drive of Fig. 2, pixel PIX by above-mentioned explanation
1Receive feedthrough effect (decline feedthrough current potential V one time
FT) influence, and pixel PIX
2But receive feedthrough effect (decline feedthrough current potential 2V twice
FT) influence.In other words, because pixel PIX
1With PIX
2The influence of suffered feedthrough effect is different, even therefore according to pixel PIX
1The influence of suffered feedthrough effect, the gamma voltage V that adjustment gamma voltage generator 130 is provided
A1～V
AXWith direct current common voltage V
COMCurrent potential, pixel PIX
2Still can't store proper data.That is to say, in display panels 100, the pixel PIX in every group of pixel
2All can't show correct brightness, so cause display panels 100 display frame correctly.
Please refer to Fig. 5.Fig. 5 is the synoptic diagram of first embodiment of explanation display panels 500 of the present invention.Display panels 500 is the display panels of semi-source pole driving architecture.Display panels 500 comprises many group pixels, gate driver circuit 110, data drive circuit 120, and gamma voltage generator 530.The structure and the many groups pixel in the display panels 100 of the many groups pixel in the display panels 500 are similar, and the illustrated method of the type of drive of display panels 500 and Fig. 2 is similar, so repeat no more.In display panels 500 of the present invention, gamma voltage generator 530 is used to provide one group of positive polarity gamma voltage V
A1P～V
AXPWith one group of negative polarity gamma voltage V
A1N～V
AXNGive data drive circuit 120.Gamma voltage generator 530 comprises bleeder circuit 531 and 532, commutation circuit 533 and 534, and control circuit 535.Bleeder circuit 531 comprises the resistance of a plurality of series connection, is coupled to node P
1With P
2Between.Bleeder circuit 531 is according to node P
1On voltage V
1With node P
2On voltage V
2, produce current potential between voltage V
1With V
2Between positive polarity gamma voltage V
A1P～V
AXP, voltage V wherein
2Current potential equal a preset noble potential V
DDBleeder circuit 532 comprises the resistance of a plurality of series connection, is coupled to node P
3With P
4Between.Bleeder circuit 532 is according to node P
3On voltage V
3With node P
4On voltage V
4, produce current potential between voltage V
3With V
4Between negative polarity gamma voltage V
A1N～V
AXN, voltage V wherein
3Current potential equal preset potential V
DCCommutation circuit 533 is coupled to node P
1, its control end C is coupled to control circuit 535.Commutation circuit 533 is used for switched voltage V
1Current potential be preset potential V
DCOr preset potential V
DCAdd compensation current potential V
CPCommutation circuit 534 is coupled to node P
4, its control end C is coupled to control circuit 535.Commutation circuit 534 is used for switched voltage V
4Current potential be preset electronegative potential V
SSOr preset electronegative potential V
SSAdd compensation current potential V
CPIn display panels 500, compensation current potential V
CPBe set at and equal feedthrough current potential V
FT, preset noble potential V
DDWith preset potential V
DCPotential difference (PD) be set at and equal preset potential V
DCWith preset electronegative potential V
SSPotential difference (PD).As common voltage source V
COMWhen the voltage that is provided is the direct current common voltage, preset potential V
DCSet the current potential of direct current common voltage for.In addition, as common voltage source V
COMThe voltage that is provided is when exchanging common voltage, preset potential V
DCSet the DC potential that exchanges common voltage for.Control circuit 535 is PIX according to the pixel that data drive circuit 120 writes data
1Or PIX
2, control commutation circuit 533 and 534 is to adjust the positive polarity gamma voltage V that gamma voltage generator 530 is provided
A1P～V
AXPWith negative polarity gamma voltage V
A1N～V
AXNSo, can make pixel PIX
1With PIX
2All show correct brightness, below its principle of work will be described further.
When data drive circuit 120 writes first data to pixel PIX
1The time, control circuit 535 control commutation circuits 533 switched voltage V
1To preset potential V
DC, and control commutation circuit 534 switched voltage V
4To preset electronegative potential V
SSTherefore, this moment, bleeder circuit 531 generation current potentials were between V
DCWith V
DDBetween positive polarity gamma voltage V
A1P～V
AXP, with current potential between V
DCWith V
SSBetween negative polarity gamma voltage V
A1N～V
AXNWhen data drive circuit 120 writes second data to pixel PIX
2The time, control circuit 535 control commutation circuits 533 switched voltage V
1To current potential (V
DC+ V
CP), and control commutation circuit 534 switched voltage V
4To current potential (V
SS+ V
CP).Therefore, this moment, bleeder circuit 531 generation current potentials were between (V
DC+ V
CP) and V
DDBetween positive polarity gamma voltage V
A1P～V
AXP, with current potential between V
DCWith (V
SS+ V
CP) between negative polarity gamma voltage V
A1N～V
AXNIn other words, gamma voltage generator 530 writes second data to pixel PIX in data drive circuit 120
2The time gamma voltage V that produced
A1P～V
AXPWith V
A1N～V
AXN, write first data to pixel PIX in data drive circuit 120 than gamma voltage generator 530
1The time gamma voltage V that produced
A1P～V
AXPWith V
A1N～V
AXNA high compensation current potential V
CPBecause compensation current potential V
CPSetting equals feedthrough current potential V
FT, so gamma voltage generator 530 writes data to pixel PIX in data drive circuit 120
2The time gamma voltage V that produced
A1P～V
AXPWith V
A1N～V
AXNBut compensation pixel PIX
2Suffered feedthrough effect.So, each organizes the pixel PIX in the pixel
1With PIX
2All can show correct brightness.
In order to be illustrated more clearly in the principle of work of display panels 500, please refer to Fig. 6 and Fig. 7.Fig. 6 and Fig. 7 can show the synoptic diagram of correct brightness for explanation display panels 500.In Fig. 6 and Fig. 7, the data polarity of supposing display panels 500 is frame counter-rotating (frame inversion), and common voltage source V
COMThe voltage that is provided is a direct current common voltage V
COM, DA
1Remarked pixel PIX
1Stored data, DA
2Remarked pixel PIX
2Stored data.
Shown in Figure 6 is pixel PIX when strange frame (odd frame)
1With PIX
2Stored data, tentation data driving circuit 120 originally desires to write data DA
INT1To pixel PIX
1With PIX
2, and the data polarity of each pixel of display panels 500 is a positive polarity at this moment.Period T in Fig. 6
1In, when data drive circuit 120 desires to write the second data (DA
INT1) to pixel PIX
2The time, control circuit 535 control commutation circuits 533 switched voltage V
1To current potential (V
DC+ V
CP), and control commutation circuit 534 switched voltage V
4To current potential (V
SS+ V
CP).So, the gamma voltage V that produced of gamma voltage generator 530
A1P～V
AXPWith V
A1N～V
AXNAll can rise one and compensate current potential V
CPTherefore, as gate driver circuit 110 driving grid line G
JWith G
(J+1)The time, data drive circuit 120 is according to the compensation current potential V that rises
CPPositive polarity gamma voltage V
A1P～V
AXP, write the second data (DA
INT1+ V
CP) to pixel PIX
2When getting into period T
2The time, gate driver circuit 110 switches to only driving grid line G
JThis moment pixel PIX
2Stored data (DA
INT1+ V
CP) through transistor Q
2Stray capacitance receive voltage V
G (J+1)The influence of negative edge, and the feedthrough current potential V that descends
FTBecause compensation current potential V
CPSetting equals feedthrough current potential V
FT, so pixel PIX
2In period T
2In stored data become DA
INT1Period T in Fig. 6
2In, when data drive circuit 120 desires to write the first data (DA
INT1) to pixel PIX
1The time, control circuit 535 control commutation circuits 533 switched voltage V
1To preset potential V
DC, and control commutation circuit 534 switched voltage V
4To preset electronegative potential V
SSSo, the gamma voltage V that produced of gamma voltage generator 530
A1P～V
AXPWith V
A1N～V
AXNSwitch to uncompensated current potential.Therefore data drive circuit 120 is according to uncompensated positive polarity gamma voltage V
A1P～V
AXP, write the first data DA
INT1To pixel PIX
1As period T
2During end, pixel PIX
1Stored data DA
INT1Receive voltage V
GJThe influence of negative edge, and the feedthrough current potential V that descends
FTSo, pixel PIX
1Stored data become DA
11In addition, pixel PIX
2Stored data also receive voltage V
GJThe influence of negative edge, and the feedthrough current potential V that descends again
FTSo pixel PIX
2Stored data become DA
21
Pixel PIX when being even frame (even frame) shown in Figure 7
1With PIX
2Stored data, the data polarity of each pixel of display panels 500 is a negative polarity at this moment.Period T in Fig. 7
1In, when data drive circuit 120 desires to write data to pixel PIX
2The time, control circuit 535 control commutation circuits 533 switched voltage V
1To current potential (V
DC+ V
CP), and control commutation circuit 534 switched voltage V
4To current potential (V
SS+ V
CP).So, the gamma voltage V that produced of gamma voltage generator 530
A1P～V
AXPWith V
A1N～V
AXNAll can rise one and compensate current potential V
CPTherefore, as gate driver circuit 110 driving grid line G
JWith G
(J+1)The time, data drive circuit 120 is according to the compensation current potential V that rises
CPNegative polarity gamma voltage V
A1N～V
AXN, write data (DA
INT2+ V
CP) to pixel PIX
2When getting into period T
2The time, gate driver circuit 110 switches to only driving grid line G
JThis moment pixel PIX
2Stored data (DA
INT2+ V
CP) through transistor Q
2Stray capacitance receive voltage V
G (J+1)The influence of negative edge, and the feedthrough current potential V that descends
FTBecause compensation current potential V
CPSetting equals feedthrough current potential V
FT, so pixel PIX
2In period T
2In stored data become (DA
INT2).Period T in Fig. 7
2In, when data drive circuit 120 desires to write data to pixel PIX
1The time, control circuit 535 control commutation circuits 533 switched voltage V
1To preset potential V
DC, and control commutation circuit 534 switched voltage V
4To preset electronegative potential V
SSSo, the gamma voltage V that produced of gamma voltage generator 530
A1P～V
AXPWith V
A1N～V
AXNSwitch to uncompensated current potential.Therefore data drive circuit 120 is according to uncompensated negative polarity gamma voltage V
A1N～V
AXN, write data (DA
INT2) to pixel PIX
1As period T
2During end, pixel PIX
1Stored data (DA
INT2) receive voltage V
GJThe influence of negative edge, and the feedthrough current potential V that descends
FTSo, pixel PIX
1Stored data become (DA
12).In addition, pixel PIX
2Stored data also receive voltage V
GJThe influence of negative edge, and the feedthrough current potential V that descends again
FTSo pixel PIX
2Stored data become (DA
22).
Can know by above-mentioned explanation, in strange frame shown in Figure 6, pixel PIX
2Stored data DA
21With pixel PIX
1Stored data DA
11All equal (DA
INT1-V
FT), and in even frame shown in Figure 7, pixel PIX
2Stored data (DA
22) and pixel PIX
1Stored data (DA
12) all equal (D
INT2-V
FT).In other words, through control circuit 535 control commutation circuits 533 and 534, to adjust the gamma voltage V that gamma voltage generator 530 is provided
A1P～V
AXPWith V
A1N～V
AXN, can compensation pixel PIX
2The influence of suffered feedthrough effect.In addition, through suitably setting DA
INT1With DA
INT2Value, can let pixel PIX in the strange frame
1(PIX
2) stored data (DA
INT1-V
FT) with even frame in pixel PIX
1(PIX
2) stored data (D
INT2-V
FT) polarity opposite.Thus, display panels 500 can be realized the function of reversal of poles, and each pixel in the display panels 500 can show correct brightness.
In addition, in Fig. 6 and Fig. 7, suppose the common voltage source V in the display panels 500
COMThe voltage that is provided is the direct current common voltage.Yet, the common voltage source V in display panels 500
COMThe voltage that is provided is when exchanging common voltage, as long as with preset potential V
DCSetting equals to exchange the accurate position of direct current of common voltage, can make each pixel in the display panels 500 all show correct brightness, and the explanation of its principle of work and Fig. 6 and Fig. 7 is similar, so repeat no more.In addition, in above-mentioned explanation, the data polarity of display panels 500 is reversed to example with frame.Yet; No matter the data polarity of display panels 500 is row counter-rotating (column inversion), row counter-rotatings (row inversion), some counter-rotating (dot inversion); Or 2 counter-rotatings (2-dot inversion); As long as through control circuit 535 control commutation circuits 533 and 534, to adjust the positive polarity gamma voltage V that gamma voltage generator 530 is provided
A1P～V
AXPWith negative polarity gamma voltage V
A1N～V
AXN, can compensation pixel PIX
2The influence of suffered feedthrough effect.Therefore, no matter the data polarity of display panels 500 is row counter-rotating, row counter-rotating, some counter-rotating, or 2 counter-rotatings, and each pixel in the display panels 500 all can show correct brightness, and makes display panels 500 display frame correctly.
Please refer to Fig. 8.Fig. 8 is the synoptic diagram of second embodiment of explanation display panels 800 of the present invention.Display panels 800 comprises many group pixels, gate driver circuit 110, data drive circuit 120, and gamma voltage generator 830.The structure of display panels 800 and type of drive and display panels 500 are similar.Compared to display panels 500, the gamma voltage generator 830 in display panels 800 provides one group of gamma voltage V
A1～V
AXGive data drive circuit 130.Gamma voltage generator 830 comprises bleeder circuit 831, commutation circuit 832 and 833, and control circuit 834.Bleeder circuit 831 comprises the resistance of a plurality of series connection, is coupled to node P
1With P
2Between.Bleeder circuit 831 is according to node P
1On voltage V
1With node P
2On voltage V
2, produce current potential between voltage V
1With V
2Between gamma voltage V
A1～V
AXCommutation circuit 832 is coupled to node P
1, its control end C is coupled to control circuit 834.Commutation circuit 832 is used for switched voltage V
1Current potential be preset potential V
DCOr preset potential V
DCAdd compensation current potential V
CPCommutation circuit 833 is coupled to node P
2, its control end C is coupled to control circuit 834.Commutation circuit 833 is used for switched voltage V
2Current potential be preset noble potential V
DD, preset electronegative potential V
SSOr preset electronegative potential V
SSAdd compensation current potential V
CPSimilar with display panels 500, in display panels 800, compensation current potential V
CPSet feedthrough current potential V for
FT, preset noble potential V
DDWith preset potential V
DCPotential difference (PD) set and to equal preset potential V
DCWith preset electronegative potential V
SSPotential difference (PD).As common voltage source V
COMWhen the voltage that is provided is the direct current common voltage, preset potential V
DCSet the current potential of direct current common voltage for.As common voltage source V
COMThe voltage that is provided is when exchanging common voltage, preset potential V
DCSet the DC potential that exchanges common voltage for.Control circuit 834 control commutation circuits 832 and 833 are to adjust the gamma voltage V that gamma voltage generator 830 is provided
A1～V
AXSo can make pixel PIX
1With PIX
2All show correct brightness, below its principle of work will be described further.
When data drive circuit 120 writes first data to pixel PIX
1The time, control circuit 834 control commutation circuits 832 switched voltage V
1Be preset potential V
DC, and the Polarity Control commutation circuit 833 switched voltage V of foundation first data
2Be preset noble potential V
DDOr preset electronegative potential V
SSMore particularly, when the polarity of first data is positive polarity, control circuit 834 control commutation circuits 833 switched voltage V
2Current potential be preset noble potential V
DDWhen the polarity of first data is negative polarity, control circuit 834 control commutation circuits 833 switched voltage V
2Current potential be preset electronegative potential V
SS
When data drive circuit 120 writes second data to pixel PIX
2The time, control circuit 834 is according to the Polarity Control commutation circuit 832 switched voltage V of second data
1Be preset potential V
DCOr preset potential V
DCAdd compensation current potential V
CP, and control commutation circuit 833 switched voltage V
2Be preset noble potential V
DDOr preset electronegative potential V
SSAdd compensation current potential V
CPWhen the polarity of second data is positive polarity, control circuit 834 control commutation circuits 832 switched voltage V
1Current potential be preset potential V
DCAdd compensation current potential V
CP, and control commutation circuit 833 switched voltage V
2Current potential be preset potential V
DDWhen the polarity of second data is negative polarity, control circuit 834 control commutation circuits 832 switched voltage V
1Current potential be preset potential V
DC, and control commutation circuit 833 switched voltage V
2Current potential be preset electronegative potential V
SSAdd compensation current potential V
CP
Can know by above-mentioned explanation, when data drive circuit 120 writes first data to pixel PIX
1The time, if the polarity of first data is positive polarity, gamma voltage generator 830 can provide current potential between V
DDWith V
DCBetween gamma voltage V
A1～V
AX, if the polarity of first data is negative polarity, then gamma voltage generator 830 can provide current potential between V
DCWith V
SSBetween gamma voltage V
A1～V
AXWhen data drive circuit 120 writes second data to pixel PIX
2The time, if the polarity of second data is positive polarity, gamma voltage generator 830 can provide current potential between V
DDWith (V
DC+ V
CP) between gamma voltage V
A1～V
AX, if the polarity of second data is negative polarity, then gamma voltage generator 830 can provide current potential between V
DCWith (V
SS+ V
CP) between gamma voltage V
A1～V
AXIn other words, when the polarity of first (or second) data is positive polarity, the gamma voltage V that gamma voltage generator 830 is provided
A1～V
AXThe positive polarity gamma voltage V that is provided with gamma voltage generator 530
A1P～V
AXPSimilar; When the polarity of first (or second) data is negative polarity, the gamma voltage V that gamma voltage generator 830 is provided
A1～V
AXThe negative polarity gamma voltage V that is provided with gamma voltage generator 530
A1N～V
AXNSimilar.That is to say that the running of display panels 800 and display panels 500 are similar.For example, when the data polarity of display panels 800 was the frame counter-rotating, the effect of the running of display panels 800 will be as Fig. 6 and shown in Figure 7.Therefore, similar with display panels 500, each pixel in the display panels 800 all can show correct brightness, and makes display panels 800 display frame correctly.
In addition; The data polarity of display panels 800 also can be row counter-rotating (column inversion), row counter-rotatings (row inversion) except for the frame counter-rotating, or some counter-rotating (dot inversion); Its principle of work is as above stated specification, so repeat no more.
In sum, display panels provided by the present invention comprises many group pixels, gate driver circuit, data drive circuit, and gamma voltage generator.Every group of pixel comprises first pixel and second pixel.The shared data line of first pixel and second pixel, and second pixel is coupled to data line through first pixel.First pixel and second pixel are coupled to first and second gate line respectively.When gate driver circuit only drove first grid polar curve, data drive circuit write data to the first pixel.When gate driver circuit drove first and second gate line simultaneously, data drive circuit write data to the second pixel.In display panels provided by the present invention, when data drive circuit write data to the first pixel, gamma voltage generator provided uncompensated gamma voltage to data drive circuit.When data drive circuit write data to the second pixel, gamma voltage generator provided and adds that the gamma voltage of compensation behind the current potential is to data drive circuit.Thus, can compensate data current potential stored in second pixel, compensating the suffered feedthrough effect of second pixel, and make the pixel of winning identical with the influence that second pixel receives the feedthrough effect.Therefore, each pixel of display panels provided by the present invention can show correct brightness, and display panels provided by the present invention display frame correctly.
Certainly; The present invention also can have other various embodiments; Under the situation that does not deviate from spirit of the present invention and essence thereof; Those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the present invention.
Claims (12)
1. the display panels that can compensate the feedthrough effect is characterized in that, comprises many group pixels, a gate driver circuit, a data drive circuit and a gamma voltage generator, wherein:
Each group pixel of said many group pixels comprises one first pixel and one second pixel; This first pixel comprises a first transistor, one first storage capacitors and one first liquid crystal capacitance; First end of this first transistor is coupled to a data line; The control end of this first transistor is coupled to a first grid polar curve, and this first storage capacitors and this first liquid crystal capacitance are coupled between second end of a common voltage source and this first transistor; This second pixel comprises a transistor seconds, one second storage capacitors and one second liquid crystal capacitance; First end of this transistor seconds is coupled to second end of this first transistor; The control end of this transistor seconds is coupled to a second grid line, and this second storage capacitors and this second liquid crystal capacitance are coupled between second end of this common voltage source and this transistor seconds;
This gate driver circuit is used for driving this first grid polar curve and this second grid line;
When this gate driver circuit drives this first grid polar curve; This data drive circuit writes to this first pixel through this data line and this first transistor with one first data; When this gate driver circuit drove this first grid polar curve and this second grid line, this data drive circuit write to this second pixel through this data line, this first transistor and this transistor seconds with one second data; And
This gamma voltage generator is used to provide one first group of gamma voltage and gives this data drive circuit, and this gamma voltage generator comprises: one first bleeder circuit, one first commutation circuit, one second commutation circuit and a control circuit; This first bleeder circuit is coupled between a first node and the Section Point; Be used for according to one second voltage on first voltage of 1 on this first node and this Section Point, produce current potential this first group of gamma voltage between this first voltage and this second voltage; This first commutation circuit is coupled to this first node; This second commutation circuit is coupled to this Section Point; And this control circuit is used for when this data drive circuit writes these first data; Controlling this this first voltage of first commutation circuit switching is one first preset potential; And to switch this second voltage according to this second commutation circuit of the Polarity Control of these first data be a preset noble potential or a preset electronegative potential; And when this data drive circuit writes these second data; Switch this first voltage according to this first commutation circuit of the Polarity Control of these second data and add a compensation current potential, and control this second commutation circuit and switch this second voltage for should maybe adding this compensation current potential by preset electronegative potential by preset noble potential for this first preset potential or this first preset potential.
2. display panels according to claim 1 is characterized in that, the data polarity of this display panels is row counter-rotating, row counter-rotating, frame counter-rotating, or the some counter-rotating.
3. display panels according to claim 1; It is characterized in that; When this common voltage source provides a direct current common voltage; This first preset potential equals the current potential of this direct current common voltage, and is somebody's turn to do the potential difference (PD) that the potential difference (PD) of presetting noble potential and this first preset potential equals this first preset potential and should preset electronegative potential.
4. display panels according to claim 1; It is characterized in that; When this common voltage source provides one to exchange common voltage; This first preset potential equals the DC potential of this interchange common voltage, and is somebody's turn to do the potential difference (PD) that the potential difference (PD) of presetting noble potential and this first preset potential equals this first preset potential and should preset electronegative potential.
5. display panels according to claim 1 is characterized in that, when the polarity of these first data was positive polarity, this this second commutation circuit of control circuit control was switched the current potential of this second voltage for presetting noble potential; When the polarity of these first data was negative polarity, this this second commutation circuit of control circuit control was switched the current potential of this second voltage for presetting electronegative potential.
6. display panels according to claim 1; It is characterized in that; When the polarity of these second data is positive polarity; The current potential that this first commutation circuit of this control circuit control is switched this first voltage adds this compensation current potential for this first preset potential, and controls this second commutation circuit and switch the current potential of this second voltage and preset noble potential for being somebody's turn to do; When the polarity of these second data is negative polarity; The current potential that this first commutation circuit of this control circuit control is switched this first voltage be this first preset potential, and controls this second commutation circuit and switch the current potential of this second voltage and add this compensation current potential for presetting electronegative potential.
7. display panels according to claim 1 is characterized in that this first bleeder circuit comprises the resistance of a plurality of series connection.
8. the display panels that can compensate the feedthrough effect is characterized in that, comprises many group pixels, a gate driver circuit, a data drive circuit and a gamma voltage generator, wherein:
Each group pixel of said many group pixels comprises: one first pixel and one second pixel; This one first pixel comprises a first transistor, one first storage capacitors and one first liquid crystal capacitance; First end of this first transistor is coupled to a data line; The control end of this first transistor is coupled to a first grid polar curve, and this first storage capacitors and this first liquid crystal capacitance are coupled between second end of a common voltage source and this first transistor; This second pixel comprises a transistor seconds, one second storage capacitors and one second liquid crystal capacitance; First end of this transistor seconds is coupled to second end of this first transistor; The control end of this transistor seconds is coupled to a second grid line, and this second storage capacitors and this second liquid crystal capacitance are coupled between second end of this common voltage source and this transistor seconds;
This gate driver circuit is used for driving this first grid polar curve and this second grid line;
When this gate driver circuit drives this first grid polar curve; This data drive circuit writes to this first pixel through this data line and this first transistor with one first data; When this gate driver circuit drove this first grid polar curve and this second grid line, this data drive circuit write to this second pixel through this data line, this first transistor and this transistor seconds with one second data; And
This gamma voltage generator is used to provide one group of positive polarity gamma voltage and one group of negative polarity gamma voltage is given this data drive circuit, and this gamma voltage generator comprises: one first bleeder circuit, one first commutation circuit, one second bleeder circuit, one second commutation circuit and a control circuit; This first bleeder circuit is coupled between a first node and the Section Point; Be used for according to one second voltage on first voltage of 1 on this first node and this Section Point; Produce current potential this group positive polarity gamma voltage between this first voltage and this second voltage, the current potential of this second voltage equals a preset noble potential; This first commutation circuit is coupled to this first node; This second bleeder circuit is coupled between one the 3rd node and one the 4th node; Be used for according to one the 4th voltage on tertiary voltage on the 3rd node and the 4th node; Produce current potential this group negative polarity gamma voltage between this tertiary voltage and the 4th voltage, the current potential of this tertiary voltage equals one first preset potential; This second commutation circuit is coupled to the 4th node; And this control circuit is used for when this data drive circuit writes these first data; Controlling this this first voltage of first commutation circuit switching is one first preset potential; And controlling this second commutation circuit, to switch the 4th voltage be a preset electronegative potential; And when this data drive circuit writes these second data; Control this first commutation circuit and switch this first voltage and add a compensation current potential, and control this second commutation circuit and switch this second voltage for adding this compensation current potential by preset electronegative potential for this first preset potential.
9. based on the described display panels of claim 8, it is characterized in that the data polarity of this display panels is row counter-rotating, row counter-rotating, frame counter-rotating, some counter-rotating, or 2 counter-rotatings.
10. display panels according to claim 8; It is characterized in that; When this common voltage source provides a direct current common voltage; This first preset potential equals the current potential of this direct current common voltage, and is somebody's turn to do the potential difference (PD) that the potential difference (PD) of presetting noble potential and this first preset potential equals this first preset potential and should preset electronegative potential.
11. display panels according to claim 8; It is characterized in that; When this common voltage source provides one to exchange common voltage; This first preset potential equals the DC potential of this interchange common voltage, and is somebody's turn to do the potential difference (PD) that the potential difference (PD) of presetting noble potential and this first preset potential equals this first preset potential and should preset electronegative potential.
12. display panels according to claim 8 is characterized in that, this first bleeder circuit comprises a plurality of resistance of connecting respectively with this second bleeder circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105074639A CN102004346B (en) | 2010-09-27 | 2010-09-27 | Liquid crystal display panel with compensable feed through effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105074639A CN102004346B (en) | 2010-09-27 | 2010-09-27 | Liquid crystal display panel with compensable feed through effect |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102004346A CN102004346A (en) | 2011-04-06 |
| CN102004346B true CN102004346B (en) | 2012-07-04 |
Family
ID=43811835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105074639A Active CN102004346B (en) | 2010-09-27 | 2010-09-27 | Liquid crystal display panel with compensable feed through effect |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102004346B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI506615B (en) * | 2013-03-28 | 2015-11-01 | Nvidia Corp | Computer monitor equalization using handheld device |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102255543B (en) * | 2011-07-21 | 2013-11-06 | 福建华映显示科技有限公司 | Power supply apparatus capable of improving flicker phenomenon of liquid crystal display (LCD), LCD capable of improving flicker phenomenon, and method thereof |
| CN102903720B (en) * | 2012-09-29 | 2014-10-22 | 京东方科技集团股份有限公司 | Film transistor array substrate and liquid crystal display device thereof |
| CN103544927B (en) * | 2013-11-07 | 2015-07-22 | 京东方科技集团股份有限公司 | Display drive circuit, display device and display drive method |
| CN105448255B (en) * | 2015-11-24 | 2018-11-30 | 昆山龙腾光电有限公司 | Liquid crystal display device and its driving method |
| CN105931594B (en) * | 2016-07-08 | 2018-12-14 | 京东方科技集团股份有限公司 | Pixel circuit, driving method, array substrate, display panel and display device |
| CN110767191A (en) * | 2019-10-24 | 2020-02-07 | 深圳市华星光电半导体显示技术有限公司 | Pixel driving circuit structure of liquid crystal display panel |
| CN113823239B (en) * | 2021-09-27 | 2023-02-28 | 惠州华星光电显示有限公司 | Display panel and display device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101093327A (en) * | 2006-06-21 | 2007-12-26 | Lg.菲利浦Lcd株式会社 | Liquid crystal panel, liquid crystal display device having the same and method for driving the same |
| CN101197111A (en) * | 2006-12-04 | 2008-06-11 | 瀚宇彩晶股份有限公司 | Display equipment for compensation feed-through voltage |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100915234B1 (en) * | 2002-12-17 | 2009-09-02 | 삼성전자주식회사 | Driving apparatus of liquid crystal display for varying limits selecting gray voltages and method thereof |
| KR20080054190A (en) * | 2006-12-12 | 2008-06-17 | 삼성전자주식회사 | Display apparatus and method of driving the same |
-
2010
- 2010-09-27 CN CN2010105074639A patent/CN102004346B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101093327A (en) * | 2006-06-21 | 2007-12-26 | Lg.菲利浦Lcd株式会社 | Liquid crystal panel, liquid crystal display device having the same and method for driving the same |
| CN101197111A (en) * | 2006-12-04 | 2008-06-11 | 瀚宇彩晶股份有限公司 | Display equipment for compensation feed-through voltage |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI506615B (en) * | 2013-03-28 | 2015-11-01 | Nvidia Corp | Computer monitor equalization using handheld device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102004346A (en) | 2011-04-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102004346B (en) | Liquid crystal display panel with compensable feed through effect | |
| CN100489943C (en) | Liquid crystal display and driving method thereof | |
| US8730140B2 (en) | Liquid crystal display panel with function of compensating feed-through effect | |
| CN101884062B (en) | Display device and method for driving display device | |
| US7733314B2 (en) | Display device | |
| US20180218660A1 (en) | Shift register, gate driving circuit and display apparatus | |
| US8896589B2 (en) | Liquid crystal display panel and display driving method | |
| CN108877720B (en) | Gate drive circuit, display device and drive method | |
| CN101320179B (en) | LCD device | |
| TW559757B (en) | Image display device and display driving method | |
| CN108735174B (en) | Pixel driving circuit, pixel driving method and display device | |
| JPH07181927A (en) | Image display device | |
| US8797310B2 (en) | Display driving circuit, device and method for polarity inversion using retention capacitor lines | |
| CN102763031B (en) | Liquid-crystal display device | |
| US10147384B2 (en) | Boosting voltage generator and a display apparatus including the same | |
| US20180240426A1 (en) | Pixel circuit, display device, display apparatus and driving method | |
| CN100570457C (en) | Gate drivers, electrooptical device, electronic equipment and driving method | |
| JP2008216893A (en) | Flat panel display device and display method thereof | |
| US20110001743A1 (en) | Drive circuit, drive method, liquid crystal display panel, liquid crystal module, and liquid cystal display device | |
| JP3193462B2 (en) | Driving method of active matrix type thin film transistor liquid crystal panel | |
| CN101939779B (en) | Driving circuit for liquid crystal display device | |
| JP2008233283A (en) | Liquid crystal display device and driving method thereof | |
| JP4975322B2 (en) | Active matrix liquid crystal display device and control method thereof | |
| KR20120050113A (en) | Liquid crystal display device and driving method thereof | |
| CN113870806A (en) | Compensation system and method for dual gate display |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |