CN101520583B - Pixel structure, driving method thereof and driving method of display - Google Patents
Pixel structure, driving method thereof and driving method of display Download PDFInfo
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- CN101520583B CN101520583B CN2009101377057A CN200910137705A CN101520583B CN 101520583 B CN101520583 B CN 101520583B CN 2009101377057 A CN2009101377057 A CN 2009101377057A CN 200910137705 A CN200910137705 A CN 200910137705A CN 101520583 B CN101520583 B CN 101520583B
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Abstract
The invention relates to a pixel structure and a driving method thereof as well as a driving method of a display. The pixel structure comprises a first scan line, a second scan line, a data line, a first switch element, a second switch element, a first pixel electrode, a first compensation electrode, a second pixel electrode, a second compensation electrode and a capacitor electrode. The first compensation electrode and the first scan line are overlapped to form a first compensation capacitor, and the second compensation electrode and the second scan line are overlapped to form a second compensation capacitor. When the first scan line is started, the first pixel electrode generates a first feed-through voltage, the second pixel electrode generates a second feed-through voltage, and the first feed-through voltage is larger than the second feed-through voltage. When the first scan line and the second scan line are started at the same time, the first pixel electrode generates a third feed-through voltage, the second pixel electrode generates a fourth feed-through voltage, and the fourth feed-through voltage is larger than the third feed-through voltage. The invention can improve colorcast phenomenon in great visual angle to obtain good display effect, and can avoid liquid crystal aging.
Description
Technical field
The present invention relates to the driving method of a kind of dot structure and driving method thereof and display; And be particularly related to a kind of dot structure and driving method thereof, and driving method with display of this dot structure with low colour cast (low color washout) display effect.
Background technology
Display for example comprises following several kinds of flat-panel screens: LCD (Liquid Crystal Display; LCD), organic light emitting diode display (Organic Light-Emitting Diodes Display; OLED), plasma scope (Plasma Display Panel; PDP) and Field Emission Display (Field Emission Display, FED) etc.
Now; Be towards the development of characteristics such as height contrast, rapid reaction and wide viewing angle for the performance requirement of LCD on the market, and the technology that can reach the wide viewing angle requirement at present for example include multi-zone vertical alignment nematic (MVA), multiple domain horizontal direction matching (MHA), twisted nematic and adds the visual angle and enlarge film (TN+film) and transverse electric field form (IPS).
Though can reach the purpose of wide viewing angle through the LCD of above-mentioned listed technology, still there are many spaces of improving in its existing colour cast (color washout) phenomenon.Generally speaking, so-called colour cast refers to as the user and views and admires angle when watching LCD institute images displayed picture with different, and the user can see the image frame of different color contrast.For instance; If the user stands in the angle of deflection comparatively (for example 60 degree) when watching LCD institute images displayed picture, the color contrast of the image frame that it is seen can be partially in vain in the color contrast that stands in the image frame that the angle faced (also promptly 90 spend) seen.
Summary of the invention
The present invention proposes a kind of dot structure, can improve the color offset phenomenon of LCD.
The present invention proposes a kind of driving method of dot structure again, and above-mentioned dot structure capable of using is to obtain the display effect of low colour cast.
The present invention reintroduces a kind of driving method of display, uses the display with above-mentioned dot structure, can improve the colour cast problem and avoid liquid crystal aging.
The present invention proposes a kind of dot structure, comprises first sweep trace, second sweep trace, data line, first on-off element, second switch element, first pixel electrode, first compensating electrode, second pixel electrode, second compensating electrode and capacitance electrode.First sweep trace and second sweep trace are arranged in parallel with each other.The data line and first sweep trace and second sweep trace are handed over more.First on-off element and first sweep trace and data line electrically connect.The second switch element and first sweep trace and data line electrically connect.First pixel electrode and first on-off element electrically connect.First compensating electrode and first pixel electrode electrically connect, and overlapping to form first building-out capacitor with first sweep trace.Second pixel electrode and second switch element electrically connect.Second compensating electrode and second pixel electrode electrically connect, and overlapping to form second building-out capacitor with second sweep trace.The capacitance electrode and first pixel electrode and second pixel electrode are overlapping.When opening first sweep trace, first pixel electrode produces first feed-trough voltage, and second pixel electrode produces second feed-trough voltage, and first feed-trough voltage is greater than second feed-trough voltage.When opening first sweep trace and second sweep trace simultaneously, first pixel electrode produces the 3rd feed-trough voltage, and second pixel electrode produces the 4th feed-trough voltage, and the 4th feed-trough voltage is greater than the 3rd feed-trough voltage.
The present invention proposes a kind of driving method of dot structure of display again; This dot structure as stated; And this driving method comprises: when display shows a picture, when the magnitude of voltage of first pixel electrode and second pixel electrode is higher than the magnitude of voltage of capacitance electrode, open first sweep trace; And when the magnitude of voltage of first pixel electrode and second pixel electrode is lower than the magnitude of voltage of capacitance electrode, open first sweep trace and second sweep trace simultaneously.
The present invention reintroduces a kind of driving method of display.At first, display is provided, it comprises, and a plurality of ranks are arranged, aforesaid dot structure.Then, when on display, showing first picture, a plurality of dot structures of odd-numbered line are transfused to the first polarity data signal, and a plurality of dot structures of even number line are transfused to the second polarity data signal; And when on display, showing second picture, a plurality of dot structures of odd-numbered line are transfused to the second polarity data signal, and a plurality of dot structures of even number line are transfused to the first polarity data signal.Wherein, when display shows that respectively the magnitude of voltage of first pixel electrode and second pixel electrode of first picture and second picture and a plurality of dot structures is higher than the magnitude of voltage of capacitance electrode, then open first sweep trace of a plurality of dot structures.When display shows that respectively the magnitude of voltage of first pixel electrode and second pixel electrode of first picture and second picture and a plurality of dot structures is lower than the magnitude of voltage of capacitance electrode, then open first sweep trace and second sweep trace of a plurality of dot structures simultaneously.
Based on above-mentioned; Dot structure proposed by the invention and driving method thereof; Can be through the sweep trace open mode under the design collocation different condition of compensating electrode; It is poor to make sub-pixel in the dot structure have different voltages with different to capacitance electrode, therefore can improve color cast phenomenon in great visual angle, obtains good display effect.In addition, the driving method of display proposed by the invention owing to can use the mode of line counter-rotating (line inversion) to drive the display with above-mentioned dot structure, therefore also can be avoided liquid crystal aging when improving colour cast.
For letting the above-mentioned feature and advantage of the present invention can be more obviously understandable, hereinafter is special lifts embodiment, and conjunction with figs. elaborates as follows.
Description of drawings
Fig. 1 is the synoptic diagram of the display 100 of preferred embodiment of the present invention.
Fig. 2 is the rough schematic of the dot structure 104 of display 100.
Fig. 3 is the schematic top plan view of the dot structure of preferred embodiment of the present invention.
Fig. 4 A is in the dot structure of Fig. 3, the diagrammatic cross-section of a-a '.
Fig. 4 B is in the dot structure of Fig. 3, the diagrammatic cross-section of b-b '.
Fig. 5 A is the synoptic diagram of display 100 when the first picture F1 of preferred embodiment of the present invention.
Fig. 5 B is the synoptic diagram of display 100 when the second picture F2 of preferred embodiment of the present invention.
Fig. 6 A be the sweep trace of corresponding diagram 5A open close the waveform synoptic diagram.
Fig. 6 B be the sweep trace of corresponding diagram 5B open close the waveform synoptic diagram.
Fig. 7 A is the synoptic diagram of the pixel electrode voltage V of corresponding diagram 4A corresponding to time t.
Fig. 7 B is that the pixel electrode V voltage of corresponding diagram 4B is corresponding to time t synoptic diagram.
Description of reference numerals in the above-mentioned accompanying drawing is following:
100: display
102: display panel
104: dot structure
110: the scanning line driving chip
111,112 ..., 11m: sweep trace
111: the first sweep traces
112: the second sweep traces
121,122 ..., 12n: data line
120: the data line chip for driving
202: substrate 202
231: the first on-off elements, the first film transistor
231s, 232s: source electrode
231d, 232d: drain electrode
232: second switch element, second thin film transistor (TFT)
241: the first pixel electrodes
242: the second pixel electrodes
251: the first contact holes
252: the second contact holes
261: the first compensating electrodes
262: the second compensating electrodes
270: capacitance electrode
C1: first building-out capacitor
C2: second building-out capacitor
C
Gd1: first grid-capacitance of drain
C
Gd2: second grid-capacitance of drain
F1: first picture
F2: second picture
V
FT1: first feed-trough voltage
V
FT2: second feed-trough voltage
V
FT3: the 3rd feed-trough voltage
V
FT4: the 4th feed-trough voltage
V
P1, V
P3: first pixel electrode voltage
V
P2, V
P4: second pixel electrode voltage
V
Com: capacitance electrode voltage
S1: the first polarity data signal
S2: the second polarity data signal
T: time
Embodiment
Fig. 1 is the synoptic diagram of the display 100 of preferred embodiment of the present invention.Please with reference to Fig. 1, in the present embodiment, display 100 is for using the LCD of line counter-rotating (line inversion) driving method.Display 100 comprise display panel 102, scanning line driving chip 110, data line chip for driving 120, m bar sweep trace parallel to each other (111,112 ..., 11m) and n bar data line parallel to each other (121,122 ..., 12n), wherein m and n are positive integer.Display panel 102 comprises the dot structure 104 that a plurality of ranks are arranged.Scanning line driving chip 110 be electrically connected to sweep trace 111,112 ..., 11m, with activation (enable) sweep trace 111,112 respectively ..., 11m.Data line chip for driving 120 electric connection data lines 121,122 ..., 12n, with provide respectively data-signal (not shown) to data line 121,122 ..., 12n.
Fig. 2 is the rough schematic of the dot structure 104 of display 100.Dot structure 104 illustrated in fig. 2 only demonstrates the dot structure on the active elements array substrates of display 100, and omits the element on display medium and the subtend substrate is shown.Please with reference to Fig. 2,, be example only, so that the explanation easy to understand of present embodiment with the dot structure 104 that is positioned at first sweep trace 111, second sweep trace 112 and data line 121 places among Fig. 1 relatively at this.
In brief, dot structure 104 comprises first sweep trace 121, second sweep trace 122, data line 121, first on-off element 131, second switch element 132, first pixel electrode 141, first compensating electrode 161, second pixel electrode 142, second compensating electrode 162 and a capacitance electrode 150.First sweep trace 111 and second sweep trace 112 are arranged in parallel with each other.The data line 121 and first sweep trace 111 and second sweep trace 112 are handed over more.First on-off element 131 and first sweep trace 111 and data line 121 electrically connect.And second switch element 132 also electrically connects with first sweep trace 111 and data line 121.First pixel electrode 141 and first on-off element 131 electrically connect.First compensating electrode 161 and first pixel electrode 141 electrically connect, and overlapping to form first building-out capacitor with first sweep trace 111.Second pixel electrode 142 electrically connects with second switch element 132.Second compensating electrode 162 and second pixel electrode 142 electrically connect, and overlapping to form second building-out capacitor with second sweep trace 112.In addition, the capacitance electrode 150 and first pixel electrode 141 and second pixel electrode 142 are overlapping.
Particularly, because dot structure 104 has the setting of first compensating electrode 161 and second compensating electrode 162, therefore first pixel electrode 141 and second pixel electrode 142 can have different voltages with different through type of drive of the present invention.More detailed, when opening first sweep trace 111, first pixel electrode 141 produces first feed-trough voltage, and second pixel electrode, 142 generations, second feed-trough voltage, and first feed-trough voltage is greater than second feed-trough voltage.Then, when opening first sweep trace 111 and second sweep trace 112 simultaneously, first pixel electrode 141 produces the 3rd feed-trough voltage, and second pixel electrode 142 produces the 4th feed-trough voltage, and the 4th feed-trough voltage is greater than the 3rd feed-trough voltage.
Above-mentioned structure illustrated in fig. 2 is the rough schematic of dot structure of the present invention.According to a preferred embodiment of the present invention, the layout of dot structure 104 and type of drive thereof are following.
Fig. 3 is the schematic top plan view of the dot structure of preferred embodiment of the present invention.Fig. 4 A is in the dot structure of Fig. 3, the diagrammatic cross-section of a-a '.Fig. 4 B is in the dot structure of Fig. 1, the diagrammatic cross-section of b-b '.Please with reference to Fig. 3, dot structure comprises first sweep trace 111, second sweep trace 112, data line 121, first on-off element 231, second switch element 232, first pixel electrode 241, first compensating electrode 261, second pixel electrode 242, second compensating electrode 262 and capacitance electrode 270.
Further, in dot structure, first sweep trace 111 and second sweep trace 112 are arranged in parallel with each other, and the data line 121 and first sweep trace 111 and second sweep trace 112 are handed over more.Particularly, in the present embodiment, data line 121 is between first pixel electrode 241 and second pixel electrode 242.
First on-off element 231 and first sweep trace 111 and data line 121 electrically connect, and second switch element 232 also electrically connects with first sweep trace 111 and data line 121.In the present embodiment, first on-off element 231 for example is the first film transistor 231 and second thin film transistor (TFT) 232 with second switch element 232.In detail, the grid of the first film transistor 231 (not indicating) is the part of first sweep trace 111, and the first film transistor 231 also has source electrode 231s and drain electrode 231d.And similarly, the grid of second thin film transistor (TFT) 232 (not indicating) also is the part of first sweep trace 111, and second thin film transistor (TFT) 232 has source electrode 232s and drain electrode 232d.In addition, the first film transistor 231 and second thin film transistor (TFT) 232 also have semiconductor layer and ohmic contact layer (not shown) separately, and those of ordinary skills are when structure and the type of drive that can understand thin film transistor (TFT), so repeat no more at this.
Please be simultaneously with reference to Fig. 3 and Fig. 4 A, in more detail, above-mentioned dot structure is positioned on the substrate 202, and dot structure also comprises first contact hole 251 and second contact hole 252.First pixel electrode 241 electrically connects through first contact hole 251 and the first film transistor 231, and second pixel electrode 242 electrically connects through second contact hole 252 and second thin film transistor (TFT) 232.
In the dot structure of present embodiment, first compensating electrode 261 links to each other with the drain electrode 231d of the first film transistor 231, and belongs to same metal level.But the present invention is not limited to this, and in other embodiments, first compensating electrode 261 also is made up of first pixel electrode 241 or other materials.Similarly, second compensating electrode 262 links to each other with the drain electrode 232d of second thin film transistor (TFT) 232, and belongs to same metal level, and in other embodiments, second compensating electrode 262 also can be made up of second pixel electrode 241 or other materials.
Because first pixel electrode 241 is to electrically connect with the drain electrode 231d of the first film transistor 231 through first contact hole 251; And first compensating electrode 261 links to each other with the drain electrode 231d of the first film transistor 231, and therefore first compensating electrode 261 can electrically connect with first pixel electrode 241.Particularly, first compensating electrode 261 can be overlapping with first sweep trace 111, to form the first building-out capacitor C1.Therefore, in the present embodiment, the first building-out capacitor C1 is made up of first compensating electrode 261, first sweep trace 111 and the gate insulation layer G that is sandwiched between the two.
In addition; Please join Fig. 3 and Fig. 4 B simultaneously; Drain electrode 232d because second pixel electrode 242 passes through second contact hole 252 with second thin film transistor (TFT) 232 electrically connects; And second compensating electrode 262 links to each other with the drain electrode 232d of second thin film transistor (TFT) 232, and therefore second compensating electrode 262 can electrically connect with second pixel electrode 242.Particularly, second compensating electrode 262 can be overlapping with second sweep trace 112, to form the second building-out capacitor C2.Therefore, in the present embodiment, the second building-out capacitor C2 is made up of second compensating electrode 262, second sweep trace 112 and the gate insulation layer G that is sandwiched between the two.
Briefly; In dot structure; First contact hole 251 electrically connects the drain electrode 231d and first compensating electrode 261 of first pixel electrode 241, the first film transistor 231, and second contact hole 252 electrically connects the drain electrode 232d and second compensating electrode 262 of second pixel electrode 242, second film transistor 232.
In addition, dot structure also has capacitance electrode 270, and the capacitance electrode 270 and first pixel electrode 241 and second pixel electrode 242 are overlapping.Capacitance electrode 270 is positioned at the below of first pixel electrode 241 and second pixel electrode 242, and laterally arranges with first sweep trace 111 and second sweep trace 112.
What deserves to be mentioned is in the present embodiment, have first grid-capacitance of drain C between the drain electrode 231d of above-mentioned the first film transistor 231 and the grid
Gd1, and have second grid-capacitance of drain C between the drain electrode 232d of second thin film transistor (TFT) 232 and the grid
Gd2In a preferred embodiment, first grid-capacitance of drain C
Gd1Equal second grid-capacitance of drain C with the totalling of the first building-out capacitor C1
Gd2Totalling with the second building-out capacitor C2.So, the stray capacitance of data line 121 left and right sides is equated, therefore can avoid data line 121 both sides that the problem of cross-talk (crosstalk) takes place.
The driving method of display 100 below will be described.
Fig. 5 A is the synoptic diagram of display 100 when the first picture F1 of preferred embodiment of the present invention.Fig. 5 B is the synoptic diagram of display 100 when the second picture F2 of preferred embodiment of the present invention.Fig. 6 A be among the corresponding diagram 5A for the sweep trace of a dot structure 104 wherein open close the waveform synoptic diagram.Fig. 6 B be among the corresponding diagram 5B for the sweep trace of a dot structure 104 wherein open close the waveform synoptic diagram.Fig. 7 A is the synoptic diagram of the pixel electrode voltage V of corresponding diagram 6A corresponding to time t.Fig. 7 B is that the pixel electrode V voltage of corresponding diagram 6B is corresponding to time t synoptic diagram.
Please earlier with reference to Fig. 5 A and Fig. 5 B; Generally speaking; Line counter-rotating (line inversion) driving method is when display 100 shows the first picture F1; A plurality of dot structures of odd-numbered line can be transfused to the first polarity data signal, and a plurality of dot structures of even number line can be transfused to the second polarity data signal.In the present embodiment, when the first picture F1, a plurality of dot structures of odd-numbered line can be transfused to the positive polarity data-signal, and a plurality of dot structures of even number line can be transfused to the negative polarity data-signal, shown in Fig. 5 A.Next, when display 100 showed the second picture F2, a plurality of dot structures of odd-numbered line then were transfused to the second polarity data signal, and a plurality of dot structures of even number line are transfused to the first polarity data signal.In the present embodiment, when the second picture F2, a plurality of dot structures of odd-numbered line can be transfused to the negative polarity data-signal, and a plurality of dot structures of even number line can be transfused to the positive polarity data-signal, shown in Fig. 5 B.Therefore, the first polarity data signal and the second polarity data signal are opposite each other.
Please be simultaneously with reference to figure 3, Fig. 5 A, Fig. 6 A and Fig. 7 A, following driving method will be that example is explained with the dot structure 104 of corresponding first and second sweep trace 111,112 and first data line 121, just the dot structure shown in Fig. 5 A dotted line 104.When showing the first picture F1 in display 100, this dot structure 104 will be transfused to the first polarity data signal (for example being positive polarity).Therefore, when display 100 shows the first picture F1, open after the sweep trace 111 of control dot structure 104, the magnitude of voltage that first and second pixel electrode 241,242 in the dot structure 104 is transfused to can be greater than the magnitude of voltage V of capacitance electrode 270
Com
Then, when sweep signal disappeared, thin film transistor (TFT) can be closed, but electric charge still can be retained on the storage capacitors of pixel, therefore can make pixel electrode still can continue to keep fixed voltage.But, this moment, the magnitude of voltage kept of pixel electrode was compared with the magnitude of voltage of pixel electrode when the thin film transistor (TFT) conducting, had a gap.This kind phenomenon kind is feedthrough effect (Feed-Through Effect), and the gap of this magnitude of voltage is called as feed-trough voltage (Feed-Through Voltage).Feed-trough voltage can be expressed as:
V
FT＝[C
GD/(C
LC+C
ST+C
GD)]×ΔV
G (1)
Wherein, the C in the equation (1)
LCBe liquid crystal capacitance, C
STBe pixel storage capacitor, C
GDBe the grid of thin film transistor (TFT) and the electric capacity between drain electrode, Δ V
GThen be the voltage difference of scan wiring when opening (on) and closing (off) thin film transistor (TFT).
Explanation by above-mentioned feed-trough voltage can know, when first sweep trace 111 by being opened to when closing, first pixel electrode 241 can produce the first feed-trough voltage V
FT1And make the voltage V of first pixel electrode 241
P1Produce a pressure drop, shown in Fig. 7 A.At the same time, second pixel electrode 242 can produce the second feed-trough voltage V
FT2And make the voltage V of second pixel electrode 242
P2Produce a pressure drop.Particularly, at this moment, because of first pixel electrode 241 can receive first grid-capacitance of drain C simultaneously
Gd1And the influence of the first building-out capacitor C1, and second pixel electrode 242 only receives second grid-capacitance of drain C
Gd2Influence, the therefore first feed-trough voltage V
FT1Can be greater than the second feed-trough voltage V
FT2Just, the voltage V of first pixel electrode 241
P1The pressure drop meeting greater than the voltage V of second pixel electrode 242
P1Pressure drop.Thus, the voltage difference delta V between first pixel electrode 241 and the capacitance electrode 270
P1Can be less than the voltage difference delta V between second pixel electrode 242 and the capacitance electrode 270
P2And because in single dot structure 104, the voltage difference delta V between the voltage difference delta VP1 between first pixel electrode 241 and the capacitance electrode 270 and second pixel electrode 242 and the capacitance electrode 270
P2Therefore difference to some extent just can improve colour cast (color washout) phenomenon of display.
Then, when display 100 shows the second picture F2, please refer to Fig. 3, Fig. 4 B, Fig. 6 B and Fig. 7 B, dot structure 104 can be transfused to the second polarity data signal (for example being negative polarity).Therefore, when display 100 shows the second picture F2, open after the sweep trace 111 of control dot structure 104, the magnitude of voltage that first and second pixel electrode 241,242 in the dot structure 104 is transfused to can be less than the magnitude of voltage V of capacitance electrode 270
Com
Similarly, when sweep signal disappeared, first and second pixel electrode 241,242 of dot structure 104 also can produce feed-trough voltage.Yet during because of F2 when second picture, the magnitude of voltage that first and second pixel electrodes 241,242 in the dot structure 104 are transfused to can be less than the magnitude of voltage V of capacitance electrode 270
ComTherefore, when the second picture F2, be to open first sweep trace 111 and second sweep trace 112 simultaneously for dot structure 104, just open sweep trace and next bar sweep trace of control dot structure 104 itself simultaneously.Shown in Fig. 6 B, promptly open first sweep trace 111 and second sweep trace 112 simultaneously.Particularly; First sweep trace 111 can be closed by being opened to earlier at first time interval; Right second sweep trace 112 finishes just to close up to second time interval after interval unlatching of the very first time, and this is because second sweep trace 112 is to produce the usefulness of control to its dot structure of controlling at second time interval.
More detailed, when display 100 shows the second picture F2, and first sweep trace 111 is by being opened to when closing, because the first compensating electrode capacitor C 1 and first grid-capacitance of drain C
Gd1Influence, first pixel electrode 241 can produce the 3rd feed-trough voltage V
FT3, the voltage V of first pixel electrode 241 just
P3Can produce the pressure drop shown in Fig. 7 B.Thus, the voltage difference between first pixel electrode 241 and the capacitance electrode 270 is Δ V
P3In addition, because first sweep trace 111 and second sweep trace 112 are to be transferred to by unlatching simultaneously closing, therefore second pixel electrode 242 can receive second grid-capacitance of drain C
Gd2And the influence of the second compensating electrode capacitor C 2, second pixel electrode 242 can produce the 4th feed-trough voltage V
FT4, and make the voltage V of second pixel electrode 242
P4Can produce the pressure drop shown in Fig. 7 B.Thus, the voltage difference between second pixel electrode 242 and the capacitance electrode 270 is Δ V
P4
In other words; Show in the time of the second picture F2 at display 100; Second pixel electrode 242 of dot structure 104 is after accepting the second polarity data signal (for example negative polarity); Can close the pressure drop that is caused by being opened to by experience first sweep trace 111, and second sweep trace 112 is closed the pressure drop that is caused by being opened to.Here first sweep trace 111, with second sweep trace 112 by being opened to the summation of closing second pixel electrode, 242 pressure drops that cause, be the 4th feed-trough voltage V shown in Fig. 7 B
FT4Especially, the 4th feed-trough voltage V
FT4Can be greater than the 3rd feed-trough voltage V
FT3Therefore, the voltage difference delta V between first pixel electrode 241 and the capacitance electrode 270
P3Can be less than the voltage difference delta V of second pixel electrode 242 with capacitance electrode 270
P4Likewise, because in single dot structure 104, the voltage difference delta V between first pixel electrode 241 and the capacitance electrode 270
P3And the voltage difference delta V between second pixel electrode 242 and the capacitance electrode 270
P4Therefore difference to some extent just can improve colour cast (color washout) phenomenon of display.
Above-mentioned driving method is to be that example is explained with single dot structure 104.Yet; For all dot structures on the display; In the time of the first picture F1; The dot structure of odd-numbered line can be transfused to first polar signal (positive signal), thus the driving method of the dot structure of odd-numbered line promptly the driving method with the dot structure 104 shown in above-mentioned Fig. 5 A dotted line is identical.And at the first picture F1 at that time, being transfused to the dot structure of the even number line of second polar signal (negative polarity signal), its driven square rule is identical as the dot structure 104 shown in Fig. 5 B dotted line, please with reference to above-mentioned explanation.
Similarly, when display 100 showed the second picture F2, the dot structure of odd-numbered line can be transfused to second polar signal (negative polarity signal) S2, and its driving method is all identical with the dot structure 104 shown in above-mentioned Fig. 5 B dotted line.And at the second picture F2 at that time, the dot structure of even number line can be transfused to first polar signal (positive signal) S1, and its driven square rule is identical with the dot structure 104 shown in above-mentioned Fig. 5 A dotted line, please with reference to above-mentioned explanation.
From the above, when with above-mentioned type of drive driving display 100, because in dot structure, the voltage difference delta V of first pixel electrode 241 and capacitance electrode 270
P1Can be less than the voltage difference delta V of second pixel electrode 242 with capacitance electrode 270
P2, therefore, have different deflection angles corresponding to first pixel electrode 241 with second pixel electrode, 242 set liquid crystal molecule (not shown), thereby the colour cast problem can be improved whereby.In addition; Above-mentioned display 100 and driving method thereof owing to do not need the number of extra increase sweep trace and data line, can make liquid crystal molecule have deflection in various degree by subregion in dot structure 104; Therefore when improving colour cast, the aperture opening ratio that also can keep display 100 is constant.
In sum; Because dot structure of the present invention has the design of compensating electrode; When the collocation dot structure of the present invention driving method the time; Can make the sub-pixel in the dot structure have the different voltages with different value respectively to cause liquid crystal molecule deflection in various degree, the colour cast in the time of therefore can improving with great visual angle.In addition, the driving method of display of the present invention owing to can use the mode of line counter-rotating to drive the display with above-mentioned dot structure, therefore also can be avoided liquid crystal aging, increase the service life when improving colour cast.
Though the present invention discloses as above with embodiment; Right its is not in order to limit the present invention; Those of ordinary skill in the technical field under any; Do not breaking away from the spirit and scope of the present invention, when doing a little change and retouching, so protection scope of the present invention is as the criterion when looking appended the scope that claim defined.
Claims (12)
1. dot structure comprises:
One first sweep trace and one second sweep trace are arranged in parallel with each other;
One data line is handed over more with this first sweep trace and this second sweep trace;
One first on-off element, itself and this first sweep trace and this data line electrically connect;
One second switch element, itself and this first sweep trace and this data line electrically connect;
One first pixel electrode, itself and this first on-off element electrically connects;
One first compensating electrode, itself and this first pixel electrode electrically connects, and overlapping to form one first building-out capacitor with this first sweep trace;
One second pixel electrode, itself and this second switch element electrically connects;
One second compensating electrode, itself and this second pixel electrode electrically connects, and overlapping to form one second building-out capacitor with this second sweep trace; And
One capacitance electrode, itself and this first pixel electrode and this second pixel electrode are overlapping,
Wherein when opening this first sweep trace; This first pixel electrode produces one first feed-trough voltage, and this second pixel electrode produces one second feed-trough voltage, and this first feed-trough voltage is greater than this second feed-trough voltage; When opening this first sweep trace and second sweep trace simultaneously; This first pixel electrode produces one the 3rd feed-trough voltage, and this second pixel electrode produces one the 4th feed-trough voltage, and the 4th feed-trough voltage is greater than the 3rd feed-trough voltage.
2. dot structure as claimed in claim 1, wherein this data line bit is between this first pixel electrode and this second pixel electrode.
3. dot structure as claimed in claim 1, wherein this first on-off element and this second switch element are respectively a first film transistor and one second thin film transistor (TFT).
4. dot structure as claimed in claim 3, wherein this first film transistor drain is connected with this first compensating electrode, and the drain electrode of this second thin film transistor (TFT) is connected with this second compensating electrode.
5. dot structure as claimed in claim 4 also comprises:
One first contact hole, it electrically connects this first pixel electrode, this first film transistor drain and this first compensating electrode; And
One second contact hole, it electrically connects drain electrode and this second compensating electrode of this second pixel electrode, this second thin film transistor (TFT).
6. dot structure as claimed in claim 3; Wherein has one first grid-capacitance of drain between this first film transistor drain and the grid; Have one second grid-capacitance of drain between the drain electrode of this second thin film transistor (TFT) and the grid, and the totalling of this first grid-capacitance of drain and this first building-out capacitor equals the totalling of this second grid-capacitance of drain and this second building-out capacitor.
7. dot structure as claimed in claim 1, wherein this capacitance electrode is positioned at the below of this first and second pixel electrode, and laterally arranges with this first and second sweep trace.
8. the driving method of the dot structure of a display, this dot structure according to claim 1, this driving method comprises:
When a display shows a picture, when the magnitude of voltage of this first pixel electrode and this second pixel electrode is higher than the magnitude of voltage of this capacitance electrode, open this first sweep trace; And
When the magnitude of voltage of this first pixel electrode and this second pixel electrode is lower than the magnitude of voltage of this capacitance electrode, open this first sweep trace and this second sweep trace simultaneously.
9. the driving method of a display comprises:
One display is provided, and it comprises the dot structure that a plurality of ranks are arranged, and each dot structure according to claim 1;
When on this display, showing one first picture, said a plurality of dot structures of odd-numbered line are transfused to one first polarity data signal, and said a plurality of dot structures of even number line are transfused to one second polarity data signal;
When on this display, showing one second picture, said a plurality of dot structures of odd-numbered line are transfused to this second polarity data signal, and said a plurality of dot structures of even number line are transfused to this first polarity data signal;
Wherein, When this display shows this first picture and this second picture respectively; When the magnitude of voltage of this first pixel electrodes of said a plurality of dot structures and this second pixel electrode is higher than the magnitude of voltage of this capacitance electrode, then open this first sweep trace of said a plurality of dot structures; And
When the magnitude of voltage of this first pixel electrodes of said a plurality of dot structures and this second pixel electrode is lower than the magnitude of voltage of this capacitance electrode, then open this first sweep trace and this second sweep trace of said a plurality of dot structures simultaneously.
10. driving method as claimed in claim 9, wherein this first polarity data signal and this second polarity data signal are opposite each other.
11. driving method as claimed in claim 9, wherein when opening this first sweep trace, this first pixel electrode produces one first feed-trough voltage, and this second pixel electrode produces one second feed-trough voltage, and this first feed-trough voltage is greater than this second feed-trough voltage.
12. driving method as claimed in claim 9; Wherein when opening this first sweep trace and second sweep trace simultaneously; This first pixel electrode produces one first feed-trough voltage, and this second pixel electrode produces one second feed-trough voltage, and this first feed-trough voltage is less than this second feed-trough voltage.
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| CN101667390B (en) * | 2009-09-29 | 2011-08-24 | 友达光电股份有限公司 | Flat panel display and grid drive method thereof |
| CN102081269A (en) * | 2010-11-16 | 2011-06-01 | 华映视讯（吴江）有限公司 | Transistor array substrate |
| CN102789755B (en) * | 2011-05-20 | 2016-04-27 | 群创光电股份有限公司 | Display panel |
| CN103558692A (en) * | 2013-10-12 | 2014-02-05 | 深圳市华星光电技术有限公司 | Polarizing type three-dimensional display panel and pixel units of polarizing type three-dimensional display panel |
| CN103926776B (en) * | 2013-12-24 | 2017-03-15 | 厦门天马微电子有限公司 | The driving method of array base palte, display floater, display device and array base palte |
| CN109949755B (en) * | 2017-12-20 | 2021-04-09 | 咸阳彩虹光电科技有限公司 | Feed-through voltage compensation circuit and liquid crystal display device |
| CN113805392A (en) * | 2020-06-12 | 2021-12-17 | 京东方科技集团股份有限公司 | Display substrate, display panel and manufacturing method of display substrate |
| CN114815419A (en) * | 2022-03-30 | 2022-07-29 | 长沙惠科光电有限公司 | Pixel structure and display panel |
| CN115035868B (en) * | 2022-05-26 | 2023-05-30 | Tcl华星光电技术有限公司 | Control method of display panel and display module |
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