CN101840119A - Pixel structure and driving method thereof - Google Patents
Pixel structure and driving method thereof Download PDFInfo
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- CN101840119A CN101840119A CN200910128963A CN200910128963A CN101840119A CN 101840119 A CN101840119 A CN 101840119A CN 200910128963 A CN200910128963 A CN 200910128963A CN 200910128963 A CN200910128963 A CN 200910128963A CN 101840119 A CN101840119 A CN 101840119A
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Abstract
The invention discloses a pixel structure and a driving method thereof. The pixel structure comprises a first sub-pixel and a second sub-pixel. The first sub-pixel comprises a first switch transistor and a first liquid crystal capacitor, wherein when the first switch transistor is conducted, the first liquid crystal capacitor is biased to a first gradation voltage. The second sub-pixel comprises a second switch transistor, a second liquid crystal capacitor, a third switch transistor, a shared capacitor and a fourth switch transistor, wherein when the second switch transistor is conducted, the second liquid crystal capacitor is biased to the first gradation voltage; when the fourth switch transistor is conducted, the shared capacitor is reset to a preset voltage; and when the third switch transistor is conducted, the second liquid crystal capacitor and the shared capacitor are charge-shared to a second gradation voltage through the third switch transistor.
Description
Technical field
The present invention relates to a kind of LCD, and be particularly related to a kind of dot structure and driving method thereof of wide-angle liquid crystal display.
Background technology
In the large scale liquid crystal display, because pixel distribution is in wider area, so the user can't face the shown image of each pixel on the display when watching, and therefore can produce the difference of brightness and contrast along with the difference of user's viewing angle.For addressing this problem, the wide viewing angle technology is arisen at the historic moment, and wherein, (multi-domain vertical alignments MVA) has been proved and can effectively improves colour cast (color washout) phenomenon multi-zone vertical alignment nematic.(capacitance coupling type, C.C.type) dot structure is a kind of wide viewing angle technology to capacitance coupling type, uses this structure need not change the type of drive of display, yet but has the problem of ghost (image sticking) when showing.Another kind of wide viewing angle technology is double-transistor (two transistors type, T.T. dot structure type), this structure has solved the ghost problem, but owing to must use the gate line or the data line of twice quantity in described dot structure, therefore needs higher manufacturing cost.
In order to improve the existing problem of known pixels structure, Samsung (Samsung Electronics) has proposed a kind of electric charge at SID Symposium Digest 2008 and has shared formula (charge-shared type) dot structure 9, comprise sub-pixel (sub-pixel) 91 and sub-pixel 92, as shown in Figure 1.By carry out shared (the charge sharing) again of electric charge between electric capacity, the sub-pixel 92 of described dot structure 9 can be kept different grayscale voltages with sub-pixel 91 when operating.Yet, because capacitor C
SThe voltage that before the TFT3 conducting, keeps previous frame (frame), so when the TFT3 conducting, liquid crystal capacitance C
LC2Be difficult to share accurately to reach the voltage level of required demonstration, make described pixel all be subjected to the influence of former frame and be different from the gray scale of actual action required in the shown gray scale intensities of each frame by electric charge.
Shown in Fig. 1 and 2, Fig. 2 for the voltage of dot structure 9 among Fig. 1 from high gray scale intensities switches to during gray scale intensities, the voltage sequential chart of each electric capacity in two sub-pixels, wherein t
1The time interval of the described dot structure 9 of expression first grid polar curve Gn conducting, t
2The time interval of the dot structure that expression second grid line Gn+1 conducting couples with it (adjacent) with described dot structure 9.As shown in the figure, at described time interval t
1, first grid polar curve Gn is actuating switch transistor T FT1 and TFT2 simultaneously, makes the liquid crystal capacitance voltage V of sub-pixel 91
C1And the liquid crystal capacitance voltage V of sub-pixel 92
C2Voltage according to data line Data is reduced to middle grayscale voltage simultaneously; At time interval t
2, second grid line Gn+1 actuating switch transistor T FT3, pass through capacitor C in the sub-pixel 92 this moment
LC2, C
ST2And C
SBetween electric charge share and make the liquid crystal capacitance voltage V of sub-pixel 92
C2The liquid crystal capacitance voltage V that is different from sub-pixel 91
C1
Shown in Fig. 1 and 3, Fig. 3 for the voltage of dot structure 9 among Fig. 1 from another gray scale intensities (for example being lower than the initial gray scale intensities of Fig. 2) switch to same during gray scale intensities, the voltage sequential chart of each electric capacity in two sub-pixels, wherein the liquid crystal capacitance voltage V of sub-pixel 91
C1And the liquid crystal capacitance voltage V of sub-pixel 92
C2Similar to Fig. 2 over time, before its difference is second grid line Gn+1 actuating switch transistor T FT3, described shared capacitor C
SHave lower voltage Vcs ', so after switching transistor TFT3 conducting, the liquid crystal capacitance voltage V of sub-pixel 92 among Fig. 3
C2' with the liquid crystal capacitance voltage V of Fig. 2
C2Has different grayscale voltages.Also promptly, during each the demonstration, the grayscale voltage of sub-pixel 92 all is subjected to the influence of former frame grayscale voltage.
In view of this, be necessary to propose a kind of dot structure of LCD, it can control the grayscale voltage level of sub-pixel more accurately.
Summary of the invention
The present invention proposes a kind of dot structure and driving method thereof, wherein the shared electric capacity in the sub-pixel of each pixel is coupled to time variant voltage for the moment, time variant voltage when described by controlling can make that the liquid crystal capacitance in the sub-pixel can reach required gray-scale displayed voltage after electric charge is shared.
The present invention also proposes a kind of dot structure and driving method thereof, and wherein before electric charge was shared, the voltage of the shared electric capacity in the sub-pixel made that in advance through over-reset the liquid crystal capacitance in the sub-pixel can reach required gray-scale displayed voltage after electric charge is shared.
The present invention proposes a kind of dot structure, comprises that first grid polar curve, data line are in order to provide grayscale voltage, first sub-pixel and second sub-pixel.Described first sub-pixel comprises first switching transistor and first liquid crystal capacitance, wherein when described first switching transistor of described first grid polar curve conducting, described data line is biased into first grayscale voltage by described first switching transistor with described first liquid crystal capacitance.Described second sub-pixel comprises second switch transistor, second liquid crystal capacitance, couple the 3rd switching transistor of second grid line and the shared electric capacity of time variant voltage when coupling, wherein when the described second switch transistor of described first grid polar curve conducting, described data line is biased into described first grayscale voltage by described second switch transistor with described second liquid crystal capacitance; When described the 3rd switching transistor of described second grid line conducting, described second liquid crystal capacitance and described shared electric capacity carry out electric charge by described the 3rd switching transistor and are shared to second grayscale voltage; Wherein said second grayscale voltage time variant voltage when described changes.
The present invention also proposes a kind of dot structure, comprises that first grid polar curve, data line are in order to provide grayscale voltage, first sub-pixel and second sub-pixel.Described first sub-pixel comprises first switching transistor and first liquid crystal capacitance, wherein when described first switching transistor of described first grid polar curve conducting, described data line is biased into first grayscale voltage by described first switching transistor with described first liquid crystal capacitance.Described second sub-pixel comprises second switch transistor, second liquid crystal capacitance, couples the 3rd switching transistor of second grid line, shares electric capacity and the 4th switching transistor, wherein when the described second switch transistor of described first grid polar curve conducting, described data line is biased into described first grayscale voltage by described second switch transistor with described second liquid crystal capacitance; When described the 4th switching transistor of described first grid polar curve conducting, described shared electric capacity is reset to predeterminated voltage; When described the 3rd switching transistor of described second grid line conducting, described second liquid crystal capacitance and described shared electric capacity carry out electric charge by described the 3rd switching transistor and are shared to second grayscale voltage.
The present invention also proposes a kind of driving method of dot structure, and described dot structure comprises first grid polar curve, first sub-pixel and second sub-pixel.Described first sub-pixel comprises first switching transistor and first liquid crystal capacitance.Described second sub-pixel comprises that second switch transistor, second liquid crystal capacitance, shared electric capacity and the 3rd switching transistor couple the second grid line.Described driving method comprises the following steps: with described first switching transistor of described first grid polar curve conducting and described second switch transistor, respectively described first liquid crystal capacitance and described second liquid crystal capacitance are biased into first grayscale voltage; Described shared electric capacity is reset to predeterminated voltage; And, share and reach second grayscale voltage so that described second liquid crystal capacitance and described shared electric capacity carry out electric charge with described the 3rd switching transistor of described second grid line conducting.
The present invention proposes a kind of driving method of dot structure in addition, and described dot structure comprises first grid polar curve, first sub-pixel and second sub-pixel.Described first sub-pixel comprises first switching transistor and first liquid crystal capacitance.Described second sub-pixel comprises second switch transistor, second liquid crystal capacitance, couple the 3rd switching transistor of second grid line and the shared electric capacity of time variant voltage when being coupled to.Described driving method comprises the following steps: with described first switching transistor of described first grid polar curve conducting and described second switch transistor, respectively described first liquid crystal capacitance and described second liquid crystal capacitance are biased into first grayscale voltage; Change time variant voltage when described according to the voltage of described shared electric capacity; And, share and reach second grayscale voltage so that described second liquid crystal capacitance and described shared electric capacity carry out electric charge with described the 3rd switching transistor of described second grid line conducting.
In dot structure of the present invention and the driving method thereof, the voltage of described shared electric capacity can be refitted in fixed voltage or the time time variant voltage; Described fixed voltage for example can be the common electric voltage of array base palte, and time variant voltage can determine according to the voltage of described shared electric capacity during the former frame when described, uses the liquid crystal capacitance that makes in the sub-pixel and can reach required gray-scale displayed voltage after electric charge is shared.
Description of drawings
Figure 1 shows that a kind of synoptic diagram of known pixels structure;
Figure 2 shows that the sequential chart of capacitance voltage in the dot structure of Fig. 1;
Figure 3 shows that another sequential chart of capacitance voltage in the dot structure of Fig. 1;
Figure 4 shows that the synoptic diagram of the dot structure of the embodiment of the invention;
Figure 5 shows that the sequential chart of capacitance voltage in the dot structure of Fig. 4; And
Figure 6 shows that another sequential chart of capacitance voltage in the dot structure of Fig. 4.
[main element symbol description]
1,9 dot structure A, first sub-pixel
C
LCAThe first liquid crystal capacitance C
STAFirst storage capacitors
The TFT1 first switching transistor B second sub-pixel
TFT2 second switch transistor T FT3 the 3rd switching transistor
TFT4 the 4th switching transistor C
LCBSecond liquid crystal capacitance
C
STBThe second storage capacitors C
SShare electric capacity
V
CASub-pixel liquid crystal capacitance voltage V
CBSub-pixel liquid crystal capacitance voltage
V
CA' sub-pixel liquid crystal capacitance voltage V
CB' sub-pixel liquid crystal capacitance voltage
V
CS, V
CS' shared capacitance voltage t
1, t
2Time interval
91,92 sub-pixel C
LC1, C
LC2Liquid crystal capacitance
C
ST1, C
ST2Storage capacitors V
C1, V
C1' sub-pixel liquid crystal capacitance voltage
V
C2, V
C2' sub-pixel liquid crystal capacitance voltage Vcom common electric voltage
Gn, Gn+1 gate line Data data line
Embodiment
In order to allow above and other objects of the present invention, feature and the advantage can be more obvious, hereinafter will be in conjunction with the accompanying drawings, be described in detail below.In explanation of the present invention, identical parts are with identical symbolic representation.
With reference to shown in Figure 4, the dot structure 1 that it shows the embodiment of the invention comprises first grid polar curve Gn, data line Data, the first sub-pixel A and the second sub-pixel B, and wherein said data line Data is in order to provide the grayscale voltage of a row dot structure during showing.In the present embodiment, share by the electric charge between the electric capacity, described first sub-pixel A and the described second sub-pixel B can have different grayscale voltage (gray level) during the demonstration of described dot structure 1.Scrutablely be that dot structure 1 shown in Figure 4 only shows in order to parts of the present invention to be described, and omitted other parts.
The described first sub-pixel A comprises the first switching transistor TFT1, the first liquid crystal capacitance C
LCAAnd the first storage capacitors C
STAThe grid of the described first switching transistor TFT1 is coupled to described first grid polar curve Gn; First end of the described first switching transistor TFT1 is coupled to described data line Data; Second end of the described first switching transistor TFT1 is coupled to the described first liquid crystal capacitance C
LCAAnd the described first storage capacitors C
STAAn end, the described first liquid crystal capacitance C
LCAAnd the described first storage capacitors C
STAThe other end be coupled to voltage source, the common electric voltage of array base palte (Vcom) for example.When the described first switching transistor TFT1 of described first grid polar curve Gn conducting, described data line Data by the described first switching transistor TFT1 to the described first liquid crystal capacitance C
LCAAnd the described first storage capacitors C
STACarry out bias voltage, so that the described first sub-pixel A shows first grayscale voltage during showing.
The described second sub-pixel B comprises second switch transistor T FT2, the second liquid crystal capacitance C
LCB, the second storage capacitors C
STB, the 3rd switching transistor TFT3 and share capacitor C
SThe grid of described second switch transistor T FT2 is coupled to described first grid polar curve Gn; First end of described second switch transistor T FT2 is coupled to described data line Data; Second end of described second switch transistor T FT2 is coupled to the described second liquid crystal capacitance C
LCBAnd the described second storage capacitors C
STBFirst end, the described second liquid crystal capacitance C
LCBAnd the described second storage capacitors C
STBSecond end be coupled to voltage source, the common electric voltage of array base palte (Vcom) for example.The grid of described the 3rd switching transistor TFT3 is coupled to second grid line Gn+1, and it is adjacent with described first grid polar curve Gn; First end of described the 3rd switching transistor TFT3 couples the described second liquid crystal capacitance C
LCBAnd the described second storage capacitors C
STBFirst end; Second end of described the 3rd switching transistor TFT3 couples described shared capacitor C
SFirst end.Described shared capacitor C
SSecond end couple voltage source, power transformation potential source when it is, described voltage source for example can be according to (the described shared capacitor C of the second sub-pixel B described in the former frame during each demonstration
S) voltage and change, make the described second sub-pixel B after electric charge is shared, can reach required gray-scale displayed voltage thus.In this embodiment, the change in voltage of each electric capacity is similar to Fig. 2 and 3 in two sub-pixels, present embodiment and Fig. 2 and 3 difference are, the time variant voltage when voltage of Vcom is in the present embodiment, and when described time variant voltage according to described the 3rd switching transistor TFT3 conducting before (former frame), the described second sub-pixel B (described shared capacitor C
S) voltage V
CSDecide, also promptly by V in Fig. 2 and 3
CSAt the second time interval t
2Preceding voltage determines.
Refer again to shown in Figure 4ly, in another embodiment, carry out before electric charge shares at the described second sub-pixel B, can be earlier with described shared capacitor C
SVoltage reset (reset) to fixed voltage or the time time variant voltage.In this embodiment, the 4th switching transistor TFT4 for example can be set in addition in the described second sub-pixel B, the grid of described the 4th switching transistor TFT4 is coupled to described first grid polar curve Gn; First end of described the 4th switching transistor TFT4 is coupled to described shared capacitor C
SFirst end; Second end of described the 4th switching transistor TFT4 is coupled to described shared capacitor C
SSecond end.Thus, in the time of described first switching transistor TFT1 of described first grid polar curve Gn conducting and second switch transistor T FT2 also described the 4th switching transistor TFT4 of conducting with the described shared capacitor C of resetting
SVoltage to fixed voltage or on-fixed voltage, wherein said fixed voltage for example can be the common electric voltage (Vcom) of array base palte; Time variant voltage for example can decide according to the grayscale voltage of the second sub-pixel B described in the former frame during described dot structure 1 each demonstration when described, thereby makes the described second sub-pixel B can reach required gray-scale displayed voltage after electric charge is shared.
Shown in Fig. 4 and 5, Fig. 5 for the voltage of dot structure 1 described in Fig. 1 for example from high gray scale intensities switches to during gray scale intensities, the voltage sequential chart of each electric capacity, wherein t in two sub-pixels
1The time interval of the described dot structure 1 of expression first grid polar curve Gn conducting, t
2The time interval of the dot structure (not shown) that expression second grid line Gn+1 conducting couples with it.As shown in the figure, at time interval t
1, described first grid line Gn conducting simultaneously first, second and the 4th switching transistor TFT1, TFT2 and TFT4 make the liquid crystal capacitance voltage V of the sub-pixel A that wins
CA(the described first liquid crystal capacitance C
LCAAnd the described first storage capacitors C
STAVoltage) and the liquid crystal capacitance voltage V of the second sub-pixel B
CB(the described second liquid crystal capacitance C
LCBAnd the described second storage capacitors C
STBVoltage) reduce to first grayscale voltage simultaneously according to the voltage of data line Data; Described shared capacitor C
SVoltage V
CSThen be reset to fixed voltage or on-fixed voltage, for example be reset to common electric voltage Vcom in this embodiment.At time interval t
2, described second grid line Gn+1 actuating switch transistor T FT3, pass through described second liquid crystal capacitance C among the second sub-pixel B this moment
LCB, the described second storage capacitors C
STBAnd described shared capacitor C
SBetween electric charge share and make the liquid crystal capacitance voltage V of the second sub-pixel B
CBBecome second grayscale voltage, it is different from first grayscale voltage of the first sub-pixel A, the liquid crystal capacitance voltage V of the wherein said second sub-pixel B
CBVoltage V with described shared electric capacity
CSBetween pressure differential deltap V caused by described the 3rd switching transistor TFT3.
With reference to shown in Fig. 4 to 6, Fig. 6 for the voltage of dot structure 1 described in Fig. 4 from another gray scale intensities (for example being lower than the initial gray scale intensities of Fig. 5) when switching to the middle gray scale intensities that is same as Fig. 5, the voltage sequential chart of each electric capacity in two sub-pixels is wherein at two time interval t
1And t
2In, the liquid crystal capacitance voltage V of the described first sub-pixel A
CAAnd the liquid crystal capacitance voltage V of the described second sub-pixel B
CBVariation similar to Fig. 5.In Fig. 6, because described shared capacitor C
SAt interval t of the described very first time
1Be reset to predeterminated voltage in advance, therefore at the described second time interval t
2Electric charge share after, the voltage of the described second sub-pixel B can accurately reach required gray-scale displayed voltage, also is liquid crystal capacitance voltage V in Fig. 5 and 6
CBWith V
CB' at the second time interval t
2After have identical voltage.
The driving method of dot structure of the present invention comprises the following steps: with described first switching transistor TFT1 of described first grid polar curve Gn conducting and described second switch transistor T FT2, with respectively with the described first liquid crystal capacitance C
LCAAnd the described second liquid crystal capacitance C
LCBBe biased into first grayscale voltage; With described shared capacitor C
SBe reset to predeterminated voltage; And with described the 3rd switching transistor TFT3 of described second grid line Gn+1 conducting, so that the described second liquid crystal capacitance C
LCBWith described shared capacitor C
SCarry out electric charge and share and reach second grayscale voltage.The driving method of dot structure of the present invention is (Fig. 4 to 6) as previously mentioned, does not repeat them here.
The driving method of the dot structure of another embodiment of the present invention comprises the following steps: with described first switching transistor TFT1 of described first grid polar curve Gn conducting and described second switch transistor T FT2, with respectively with the described first liquid crystal capacitance C
LCAAnd the described second liquid crystal capacitance C
LCBBe biased into first grayscale voltage; According to described shared capacitor C
SVoltage change time variant voltage when described; And with described the 3rd switching transistor TFT3 of described second grid line Gn+1 conducting, so that the described second liquid crystal capacitance C
LCBWith described shared capacitor C
SCarry out electric charge and share and reach second grayscale voltage.
As previously mentioned, because the sub-pixel of known pixels structure (Fig. 1) has the problem that can't accurately reach required gray-scale displayed voltage during showing, therefore the present invention proposes a kind of dot structure (Fig. 4) in addition, share the grayscale voltage of electric capacity by before electric charge is shared, resetting in advance, thereby control the level of grayscale voltage more accurately.
Though the present invention discloses with previous embodiment, yet it is not that any the ordinary technical staff in the technical field of the invention is not breaking away from the spirit and scope of the invention, can make various modification and modification in order to qualification the present invention.Therefore protection scope of the present invention should be as the criterion with the scope of claims.
Claims (20)
1. dot structure comprises:
First grid polar curve;
Data line is in order to provide grayscale voltage;
First sub-pixel comprises first switching transistor and first liquid crystal capacitance, and wherein when described first switching transistor of described first grid polar curve conducting, described data line is biased into first grayscale voltage by described first switching transistor with described first liquid crystal capacitance; And
Second sub-pixel, comprise second switch transistor, second liquid crystal capacitance, couple the 3rd switching transistor of second grid line and the shared electric capacity of time variant voltage when coupling, wherein when the described second switch transistor of described first grid polar curve conducting, described data line is biased into described first grayscale voltage by described second switch transistor with described second liquid crystal capacitance; When described the 3rd switching transistor of described second grid line conducting, described second liquid crystal capacitance and described shared electric capacity carry out electric charge by described the 3rd switching transistor and are shared to second grayscale voltage;
Wherein said second grayscale voltage time variant voltage when described changes.
2. dot structure according to claim 1, when wherein said time variant voltage according to described the 3rd switching transistor conducting before the voltage of described shared electric capacity decide.
3. dot structure according to claim 1, wherein said second sub-pixel also comprises second storage capacitors, shares to carry out electric charge with described second liquid crystal capacitance and described shared electric capacity.
4. dot structure according to claim 1, wherein said first grid polar curve is described first switching transistor of conducting and described second switch transistor simultaneously.
5. dot structure comprises:
First grid polar curve;
Data line is in order to provide grayscale voltage;
First sub-pixel comprises first switching transistor and first liquid crystal capacitance, and wherein when described first switching transistor of described first grid polar curve conducting, described data line is biased into first grayscale voltage by described first switching transistor with described first liquid crystal capacitance; And
Second sub-pixel, comprise second switch transistor, second liquid crystal capacitance, couple the 3rd switching transistor of second grid line, shared electric capacity and the 4th switching transistor, wherein when the described second switch transistor of described first grid polar curve conducting, described data line is biased into described first grayscale voltage by described second switch transistor with described second liquid crystal capacitance; When described the 4th switching transistor of described first grid polar curve conducting, described shared electric capacity is reset to predeterminated voltage; When described the 3rd switching transistor of described second grid line conducting, described second liquid crystal capacitance and described shared electric capacity carry out electric charge by described the 3rd switching transistor and are shared to second grayscale voltage.
6. dot structure according to claim 5, wherein said predeterminated voltage be fixed voltage or the time time variant voltage.
7. dot structure according to claim 6, wherein said fixed voltage are common electric voltage.
8. dot structure according to claim 6, the voltage before time variant voltage is reset according to described shared electric capacity when wherein said decides.
9. dot structure according to claim 5, the conducting simultaneously of wherein said first grid polar curve described first, second and the 4th switching transistor.
10. dot structure according to claim 5, wherein said second sub-pixel also comprises second storage capacitors, shares to carry out electric charge with described second liquid crystal capacitance and described shared electric capacity.
11. the driving method of a dot structure, described dot structure comprises first grid polar curve, first sub-pixel and second sub-pixel, described first sub-pixel comprises first switching transistor and first liquid crystal capacitance, described second sub-pixel comprises second switch transistor, second liquid crystal capacitance, shared electric capacity and couples the 3rd switching transistor of second grid line that described driving method comprises the following steps:
With described first switching transistor of described first grid polar curve conducting and described second switch transistor, respectively described first liquid crystal capacitance and described second liquid crystal capacitance are biased into first grayscale voltage;
Described shared electric capacity is reset to predeterminated voltage; And
With described the 3rd switching transistor of described second grid line conducting, share and reach second grayscale voltage so that described second liquid crystal capacitance and described shared electric capacity carry out electric charge.
12. driving method according to claim 11, wherein said predeterminated voltage be fixed voltage or the time time variant voltage.
13. driving method according to claim 12, wherein said fixed voltage are common electric voltage.
14. driving method according to claim 12, time variant voltage is according to the voltage decision of described shared electric capacity before replacement when wherein said.
15. driving method according to claim 11, described first and second switching transistor of wherein said first grid polar curve conducting simultaneously.
16. driving method according to claim 11, wherein said second sub-pixel also comprises the 4th switching transistor, and the step that described shared electric capacity is reset to predeterminated voltage also comprises the following steps: with described the 4th switching transistor of described first grid polar curve conducting with the described shared electric capacity of resetting.
17. driving method according to claim 16, the conducting simultaneously of wherein said first grid polar curve described first, second and the 4th switching transistor.
18. driving method according to claim 11, wherein said second grid line is adjacent with described first grid polar curve.
19. the driving method of a dot structure, described dot structure comprises first grid polar curve, first sub-pixel and second sub-pixel, described first sub-pixel comprises first switching transistor and first liquid crystal capacitance, described second sub-pixel comprises second switch transistor, second liquid crystal capacitance, couple the 3rd switching transistor of second grid line and the shared electric capacity of time variant voltage when coupling, and described driving method comprises the following steps:
With described first switching transistor of described first grid polar curve conducting and described second switch transistor, respectively described first liquid crystal capacitance and described second liquid crystal capacitance are biased into first grayscale voltage;
Change time variant voltage when described according to the voltage of described shared electric capacity; And
With described the 3rd switching transistor of described second grid line conducting, share and reach second grayscale voltage so that described second liquid crystal capacitance and described shared electric capacity carry out electric charge.
20. driving method according to claim 19, wherein said second grid line is adjacent with described first grid polar curve.
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|---|---|---|---|
| CN200910128963A CN101840119A (en) | 2009-03-20 | 2009-03-20 | Pixel structure and driving method thereof |
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|---|---|---|---|
| CN200910128963A CN101840119A (en) | 2009-03-20 | 2009-03-20 | Pixel structure and driving method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102184717A (en) * | 2011-04-29 | 2011-09-14 | 深圳市华星光电技术有限公司 | Pixel structure and driving method thereof |
| CN103424903A (en) * | 2012-05-16 | 2013-12-04 | 群康科技(深圳)有限公司 | Displayer and pixel driving method |
| CN104240671A (en) * | 2014-07-07 | 2014-12-24 | 友达光电股份有限公司 | Pixel circuit, control method thereof and display device with pixel circuit |
| WO2016082190A1 (en) * | 2014-11-24 | 2016-06-02 | 深圳市华星光电技术有限公司 | Display panel detection circuit and detection method therefor |
| WO2016090698A1 (en) * | 2014-12-10 | 2016-06-16 | 深圳市华星光电技术有限公司 | Liquid crystal display panel and drive method thereof |
| CN106773413A (en) * | 2017-01-03 | 2017-05-31 | 深圳市华星光电技术有限公司 | A kind of array base palte and display device |
| WO2021203468A1 (en) * | 2020-04-08 | 2021-10-14 | Tcl华星光电技术有限公司 | Liquid crystal display panel, display module, and electronic device |
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2009
- 2009-03-20 CN CN200910128963A patent/CN101840119A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102184717A (en) * | 2011-04-29 | 2011-09-14 | 深圳市华星光电技术有限公司 | Pixel structure and driving method thereof |
| CN103424903A (en) * | 2012-05-16 | 2013-12-04 | 群康科技(深圳)有限公司 | Displayer and pixel driving method |
| CN103424903B (en) * | 2012-05-16 | 2016-02-24 | 群康科技(深圳)有限公司 | Display and image element driving method |
| CN104240671A (en) * | 2014-07-07 | 2014-12-24 | 友达光电股份有限公司 | Pixel circuit, control method thereof and display device with pixel circuit |
| WO2016082190A1 (en) * | 2014-11-24 | 2016-06-02 | 深圳市华星光电技术有限公司 | Display panel detection circuit and detection method therefor |
| WO2016090698A1 (en) * | 2014-12-10 | 2016-06-16 | 深圳市华星光电技术有限公司 | Liquid crystal display panel and drive method thereof |
| CN106773413A (en) * | 2017-01-03 | 2017-05-31 | 深圳市华星光电技术有限公司 | A kind of array base palte and display device |
| WO2021203468A1 (en) * | 2020-04-08 | 2021-10-14 | Tcl华星光电技术有限公司 | Liquid crystal display panel, display module, and electronic device |
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