CN101630099B - Liquid crystal display device and control method thereof - Google Patents
Liquid crystal display device and control method thereof Download PDFInfo
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- CN101630099B CN101630099B CN 200810131624 CN200810131624A CN101630099B CN 101630099 B CN101630099 B CN 101630099B CN 200810131624 CN200810131624 CN 200810131624 CN 200810131624 A CN200810131624 A CN 200810131624A CN 101630099 B CN101630099 B CN 101630099B
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Abstract
The invention discloses a liquid crystal display device and a control method thereof. Pixels of the liquid crystal display device at least comprise a first switching component, a second switching element, a first storage capacitor, a second storage capacitor, a first liquid crystal capacitor and a second liquid crystal capacitor. The control method at least sequentially comprises a first pixel charge stage, a second pixel charge stage and a normal display stage. The first pixel charge stage at least comprises that: the first switching component and the second switching element are opened to input a first grey scale signal to the first storage capacitor, the second storage capacitor and the second liquid crystal capacitor. The second pixel charge stage comprises that: the second switching element is closed and a second grey scale signal is input to the first storage capacitor and the first liquid crystal capacitor. The normal display stage comprises that: the first switching component is closed.
Description
Technical field
The invention relates to a kind of liquid crystal indicator, particularly relevant for a kind of multi-domain vertical alignment (Multi-Domain Vertical Alignment; MVA) LCD.
Background technology
Raising along with development of science and technology and standard of living, people are also more and more higher for the requirement of display, because LCD has the advantage of light, thin, short, little and low power consuming, the cathode ray tube (CRT) display that feasible script occupy dominant position is little by little replaced by LCD, wherein (Multi-DomainVertical Alignment; MVA) LCD has sizable angle of visibility, therefore also gets most of the attention.To be the alignment structure that utilizes special shape be divided into a plurality of zones with the liquid crystal molecule of a pixel to the MVA LCD, under the mutual compensate for optical characteristic of the liquid crystal molecule of multizone, makes the observer can be in viewing and admiring picture with great visual angle.Because the MVA LCD is different to the curve of brightness in the gray scale of facing with the side-looking gained, so the user observes same grayscale resulting brightness meeting difference to some extent when showing in different angles, this phenomenon is referred to as colour cast (color shift).
In the prior art, owing to face with the colour cast of side-looking slighter when high gray scale and low gray scale show, so be to make pixel show a high gray scale and a low gradation data simultaneously when showing middle gray, and to make the continuous integration of this high gray scale and low gradation data be the gray-scale value of the default color of pixel.Utilize aforesaid way, make high gradation data and low gradation data complementation, take place with the situation that reduces colour cast.
Summary of the invention
Therefore, an aspect of of the present present invention is providing a kind of liquid crystal indicator and its control method exactly, makes liquid crystal indicator show high gradation data and low gradation data simultaneously.
According to one embodiment of the invention, a kind of liquid crystal indicator is proposed, this liquid crystal indicator comprises at least: a data line, first sweep trace, first reference signal line and first pixel.First sweep trace and first reference signal line are arranged in a crossed manner.First pixel comprises at least: first on-off element, first storage capacitors, second switch element, second storage capacitors, first liquid crystal capacitance, second liquid crystal capacitance.The first on-off element system and data line and first sweep trace electrically connect.First storage capacitors is to electrically connect with first on-off element and first reference signal line.The second switch element is to electrically connect with this first on-off element and this first reference signal line.Second storage capacitors is to electrically connect with this second switch element and this first reference signal line.First liquid crystal capacitance is to electrically connect with this first on-off element and this first storage capacitors.Second liquid crystal capacitance is to electrically connect with this second switch element and this second storage capacitors.
According to another embodiment of the present invention, propose a kind of control method of liquid crystal indicator, this control method comprises at least: the pixel charging stage first time is provided, the pixel charging stage second time is provided and the normal demonstration stage is provided.The pixel charging stage comprises at least for the first time: utilize data line to export first grey scale signal to the first pixel; Utilize first sweep trace to export first start signal to the first on-off element, to import first grey scale signal to the first storage capacitors and first liquid crystal capacitance; And utilize first reference signal line to export second start signal to the second switch element, to import first grey scale signal to the second storage capacitors and second liquid crystal capacitance.The pixel charging stage comprises at least for the second time: utilize data line to export second grey scale signal to the first pixel; Utilize first sweep trace to export first start signal to the first on-off element, to import second grey scale signal to the first storage capacitors and first liquid crystal capacitance; And utilize first reference signal line to export first shutdown signal to the second switch element, so that second storage capacitors and second liquid crystal capacitance store first grey scale signal.The normal demonstration stage comprises at least: utilize first sweep trace to export one second shutdown signal to this first on-off element, so that this first storage capacitors and this first liquid crystal capacitance store this second grey scale signal.Wherein, first grey scale signal is different with second grey scale signal.
Description of drawings
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, below in conjunction with accompanying drawing the specific embodiment of the present invention is elaborated, wherein:
For above-mentioned and other purposes of the present invention, feature and advantage can be become apparent, above especially exemplified by a preferred embodiment, and cooperate appended graphicly, be described in detail below:
Fig. 1 illustrates the structural representation according to the liquid crystal indicator of the first embodiment of the present invention.
Fig. 2 illustrates the circuit diagram according to the pixel of the liquid crystal indicator of the first embodiment of the present invention.
Fig. 3 illustrates the schematic flow sheet according to the pixel control method of the liquid crystal indicator of the first embodiment of the present invention.
Fig. 4 illustrates the sequential chart according to sweep signal and the reference signal of the liquid crystal indicator of the first embodiment of the present invention.
Fig. 5 illustrates the structural representation of liquid crystal indicator according to a second embodiment of the present invention.
Fig. 6 illustrates the circuit diagram of the pixel of liquid crystal indicator according to a second embodiment of the present invention.
Fig. 7 illustrates the sequential chart of sweep signal and the control signal of liquid crystal indicator according to a second embodiment of the present invention.
The main element symbol description:
100: liquid crystal indicator 101: pixel column
102: pixel 102a: pixel
102a ': inferior pixel 102a ": inferior pixel
102b: pixel 102c: pixel
120: sweep trace 122: data line
123: data-signal 124: reference signal line
126: sweep signal 128: reference signal
130: sweep trace 134: reference signal line
136: sweep signal 138: reference signal
146: the second liquid crystal capacitances of 142: the first liquid crystal capacitances
152: the first storage capacitors of 150: the first switches
154: 156: the second storage capacitors of second switch
162: the three storage capacitors of 160: the three switches
166: the four storage capacitors of 164: the four switches
172; 176: the second liquid crystal capacitances of the 3rd liquid crystal capacitance
200: control method 202: pre-charging stage
204: transition period 206: often show the stage
300: liquid crystal indicator 301: pixel column
301a: pixel column 301b: pixel column
304: signal generating circuit 304a: signal generating circuit
304b: signal generating circuit 306: control signal wire
308: control signal wire 310: switch
312: signaling conversion circuit 314: switch
316: switch 320: control signal
330: control signal 340: switch
342: signaling conversion circuit 344: switch
346: switch
Embodiment
Please see figures.1.and.2 simultaneously, Fig. 1 illustrates the structural representation according to the liquid crystal indicator 100 of the first embodiment of the present invention, and Fig. 2 illustrates the circuit diagram according to the pixel of the liquid crystal indicator of the first embodiment of the present invention.Liquid crystal indicator 100 comprises many pixel columns 101, and each pixel column 101 is to comprise a plurality of pixels 102, each pixel 102 comprises two switches and two storage capacitors and corresponds to one scan line, a data line and a reference signal line, wherein pixel column 101a comprises pixel 102a at least, and pixel column 101b comprises pixel 102b at least.In this first embodiment, pixel 102a system corresponds to sweep trace 120, data line 122 and reference signal line 124, and pixel 102a also comprises twice pixel 102a ' and reaches 102a "; wherein time pixel 102a ' comprises first storage capacitors 152 and first liquid crystal capacitance 142, inferior pixel 102a and " comprises second storage capacitors 156 and second liquid crystal capacitance 146; Pixel 102b corresponds to sweep trace 130, data line 122 and reference signal line 134, and wherein sweep trace 120 inputs have sweep signal 126; Sweep trace 130 inputs have sweep signal 136; Data line 122 inputs have data-signal 123; Reference signal line 124 inputs have reference signal 128; Reference signal line 134 inputs have reference signal 138.In pixel 102a, first switch 150 is electrically connected to sweep trace 120 and data line 122, first storage capacitors 152 is electrically connected to first switch 150 and reference signal line 124, first liquid crystal capacitance 142 is electrically connected to first switch 150 and a reference potential, opens first switch 150 according to sweep signal 126 and makes first storage capacitors 152 and first liquid crystal capacitance 142 receive data-signal 123.Second switch 154 is electrically connected to first switch 150 and reference signal line 124, second storage capacitors 156 is electrically connected to second switch 154 and reference signal line 124, second liquid crystal capacitance 146 is electrically connected to second switch 154 and a reference potential, if first switch 150 is opened, can open second switch 154 according to reference signal 128 and make second storage capacitors 156 and second liquid crystal capacitance 146 receive data-signal 123.As shown in the above description, the control of inferior pixel 102 ' be subjected to first switch 150 determines whether accepting data-signal, inferior pixel 102 " control that is subjected to first switch 150 and second switch 154 determines whether accepting data-signal; to be liquid crystal indicator 100 open time pixel 102a ' and accept data-signal if look on the bright side of things meaning; then must utilize sweep trace 120 to open first switch 150; to open time pixel 102a if look on the bright side of things " is accepted data-signal, then must utilize sweep trace 120 to open first switch 150 and utilizes reference signal line 124 to open second switch 154.
Similarly, in pixel 102b, the 3rd switch 160 is electrically connected to sweep trace 130 and data line 122, the 3rd storage capacitors 162 is electrically connected to the 3rd switch 160 and reference signal line 134, the 3rd liquid crystal capacitance 172 is electrically connected to the 3rd switch 160 and a reference potential, makes the 3rd storage capacitors 162 and the 3rd liquid crystal capacitance 172 receive data-signal 123 to open the 3rd switch 160 according to sweep signal 136.The 4th switch 164 is electrically connected to the 3rd switch 160 and reference signal line 134, the 4th storage capacitors 166 is electrically connected to the 4th switch 164 and reference signal line 134, the 4th liquid crystal capacitance 176 is electrically connected to the 4th switch 164 and a reference potential, if the 3rd switch 160 is opened, can open the 4th switch 164 according to reference signal 138 and make the 4th storage capacitors 166 and the 4th liquid crystal capacitance 176 receive data-signal 123.
Please be simultaneously with reference to Fig. 3 and Fig. 4, Fig. 3 illustrates the schematic flow sheet according to the pixel control method of the liquid crystal indicator 100 of the first embodiment of the present invention, and Fig. 4 system illustrates according to the sweep signal of the liquid crystal indicator 100 of the first embodiment of the present invention and the sequential chart of reference signal.In pixel control method 200, carry out the pixel charging stage first time 202, pixel charging stage 204 second time and normally show the stage 206.In the following description, be to illustrate pixel control method 200 with pixel 102a.In the pixel charging stage first time 202, data-signal 123 is first grey scale signal, sweep signal 126 and reference signal 128 are opened first switch 150 and second switch 154 respectively, therefore first grey scale signal is applied in respectively on the end of first storage capacitors 152, first liquid crystal capacitance 142, second storage capacitors 156 and second liquid crystal capacitance 146, wherein reference signal 128 is a cut-in voltage, and cut-in voltage is in order to open switch.Then in the pixel charging stage second time 204, reference signal 128 is changed into one and is closed voltage, close voltage system in order to close switch, meaning is about to second switch 154 and closes, and it is constant so can to make second storage capacitors 156 and second liquid crystal capacitance 146 keep first grey scale signal.In with the stage, data-signal 123 becomes second grey scale signal and sees through first switch 150, puts on an end of first storage capacitors 152 and first liquid crystal capacitance 142.Then in the demonstration stage 206, sweep signal 126 is changed into one and is closed voltage, and meaning is about to first switch 150 and closes, and it is constant so can to make first storage capacitors 152 and first liquid crystal capacitance 142 keep second grey scale signal.Because liquid crystal indicator 100 is to open sweep trace in proper order, therefore after pixel column 101 was unlocked, each pixel 102 of this pixel column 101 all utilized control method 200 to control.
By control method 200, pixel 102a can " and 120a ' stores first grey scale signal and second grey scale signal simultaneously in inferior pixel 102a.Utilize first grey scale signal to drive second liquid crystal capacitance, the 146 corresponding first liquid crystal molecule groups, can make the first liquid crystal molecule group show first gray-scale value.Similarly, utilize second grey scale signal to drive first liquid crystal capacitance, the 142 corresponding second liquid crystal molecule groups, can make the second liquid crystal molecule group show one second gray-scale value, and the continuous integration of first gray-scale value and second gray-scale value is the gray-scale value of the default color of represent pixel 102.See through and utilize twice pixel 102a ' to reach 102a and " show that simultaneously a high gray scale and a mode of hanging down gray scale show the intermediate grey values of a default color, then can realize the effect of low colour cast (Low Color Shift).
What deserves to be mentioned is, control method 200 is with first storage capacitors 152, first liquid crystal capacitance 142, the 3rd storage capacitors 162 and 172 precharge of the 3rd liquid crystal capacitance in the pixel charging stage first time 202, the current potential of first storage capacitors 152, first liquid crystal capacitance 142, the 3rd storage capacitors 162 and the 3rd liquid crystal capacitance 172 was worse than in the pixel charging stage 204 for the second time, utilizes first grey scale potential differences that has stored to be transformed into second grey scale potential differences rapidly.Therefore can moderately adjust and distribute the pixel charging stage more time in the first time 202, distribute the less time in the second pixel charging stage 204, guarantee correctly to store first grey scale potential differences at the pixel charging stages first time 202: second storage capacitors 156, second liquid crystal capacitance 146, the 4th storage capacitors 166 and the 4th liquid crystal capacitance 176, make the demonstration optimization of liquid crystal indicator 100.
Please be simultaneously with reference to Fig. 5 and Fig. 6, Fig. 5 illustrates the structural representation of liquid crystal indicator 300 according to a second embodiment of the present invention, and Fig. 6 illustrates the circuit diagram of the pixel of liquid crystal indicator 300 according to a second embodiment of the present invention.Liquid crystal indicator 300 is to be similar to liquid crystal indicator 100, but difference is each pixel column 301 of liquid crystal indicator 300 and comprises signal generating circuit 304, and liquid crystal indicator 300 comprises control signal wire 306 and 308, wherein signal generating circuit 304 is in order to produce reference signal and to export reference signal to reference signal line, and wherein control signal wire 306 and 308 is electrically connected to the signal generating circuit 304 of each pixel column 301.Pixel column 301a comprises pixel 102a and signal generating circuit 304a at least, and pixel column 301b comprises pixel 102b and signal generating circuit 304b at least, and wherein pixel column 301a is adjacent to pixel column 301b.The element that each signal generating circuit 304 comprises is all identical, illustrates its circuit structure with signal generating circuit 304a and 304b in following explanation.
Please refer to Fig. 7, it illustrates the sweep signal of liquid crystal indicator 300 according to a second embodiment of the present invention and the sequential chart of control signal.It is how to produce reference signal that following elder generation illustrates signal generating circuit with signal generating circuit 304a.In the charging stage first time 202, sweep signal 126 is opened switches 310, the first control signals 320 and is opened switches 314, the second control signals 330 and close switch 316, with output scanning signal 126 to reference signal line 124.Because the sweep signal 126 of this moment can be opened first switch 150, the work kenel of second switch 154 is identical with first switch 150 again, therefore the sweep signal 126 that is sent to reference signal line 124 can be opened second switch 154, and this moment, first grey scale signal from data line 122 was applied in respectively on the end of first storage capacitors 152, first liquid crystal capacitance 142, second storage capacitors 156 and second liquid crystal capacitance 146.In the pixel charging stage second time 204, first control signal 320 is closed switch 314, second control signal 330 is opened switch 316, to export the ground connection reference voltage to reference signal line 124, so can close second switch 154, it is constant so can to make second storage capacitors 156 and second liquid crystal capacitance 146 keep first grey scale signal, and is applied in an end of first storage capacitors 152 and first liquid crystal capacitance 142 respectively from second grey scale signal of data line 122.In the normal demonstration stage 206, sweep signal 126 maintains low level, therefore first switch 150 and second switch 154 are all kept and are closed, can make second storage capacitors 156 and second liquid crystal capacitance 146 keep first grey scale signal, and first storage capacitors 152 and first liquid crystal capacitance 142 are kept second grey scale signal.By above explanation as can be known second control signal 330 be anti-phase with first control signal 320.
Below illustrate with signal generating circuit 304b again, in the charging stage first time 202, sweep signal 136 is opened switch 340, the first control signals 320 and is closed switch 346, second control signal 330 is opened switches 344, with output scanning signal 136 to reference signal line 134.Because the sweep signal 136 of this moment can be opened the 3rd switch 160, the work kenel of the 4th switch 164 is identical with the 3rd switch 160 again, the sweep signal 136 that is sent to reference signal line 134 can be opened the 4th switch 164, and this moment, first grey scale signal from data line 122 was applied in respectively on the end of the 3rd storage capacitors 162, the 3rd liquid crystal capacitance 174, the 4th storage capacitors 166 and the 4th liquid crystal capacitance 176.In the pixel charging stage second time 204, first control signal 320 is opened switch 346, second control signal 330 is closed switch 344, to export the ground connection reference voltage to reference signal line 134, so can close the 4th switch 164, it is constant so can to make the 4th storage capacitors 166 and the 4th liquid crystal capacitance 176 keep first grey scale signal, and is applied in an end of the 3rd storage capacitors 162 and the 3rd liquid crystal capacitance 174 respectively from second grey scale signal of data line 122.In the normal demonstration stage 206, sweep signal 136 maintains low level, therefore the 3rd switch 160 and the 4th switch 164 are all kept and are closed, can make the 4th storage capacitors 156 and the 4th liquid crystal capacitance 176 keep first grey scale signal, and the 3rd storage capacitors 162 and the 3rd liquid crystal capacitance 174 are kept second grey scale signal.
In a second embodiment, utilize the phase differential of sweep signal 126 and sweep signal 136 suitably to design first control signal 320 and second control signal 330, make first control signal 320 have identical phase differential with second control signal 330, so only use mode that sweep trace, data line, first control signal wire and second control signal wire namely can control methods 200 to control each pixel of liquid crystal indicator 300, the pin count that does not need to increase drive IC provides signal to each bar reference signal line, therefore can save the design cost of drive IC.
Though the present invention discloses as above with preferred embodiment; right its is not in order to limiting the present invention, any those skilled in the art, without departing from the spirit and scope of the present invention; when can doing a little modification and perfect, so protection scope of the present invention is when with being as the criterion that claims were defined.
Claims (15)
1. liquid crystal indicator comprises at least:
One data line;
One first sweep trace, arranged in a crossed manner with this data line;
One first reference signal line, arranged in a crossed manner with this data line; And
One first pixel, this first pixel comprises at least:
One first on-off element, this first on-off element is thin film transistor (TFT), its grid and the electric connection of this first sweep trace, its source electrode and this data line electrically connect, its drain electrode electrically connects with this first storage capacitors;
One first storage capacitors electrically connects with this first on-off element and this first reference signal line;
One second switch element electrically connects with this first on-off element and this first reference signal line, and this second switch element is thin film transistor (TFT);
One second storage capacitors electrically connects with this second switch element and this first reference signal line;
One first liquid crystal capacitance electrically connects with this first on-off element and this first storage capacitors; And
One second liquid crystal capacitance electrically connects with this second switch element and this second storage capacitors;
It is characterized in that drain electrode and this second storage capacitors of the source electrode of the grid of this second switch element and the electric connection of this first reference signal line, this second switch element and the drain electrode electric connection of this first on-off element, this second switch element electrically connect.
2. liquid crystal indicator as claimed in claim 1 is characterized in that, when this first and second switch element when being closed condition, the stored voltage of the stored voltage of this first storage capacitors and this second storage capacitors is different.
3. liquid crystal indicator as claimed in claim 1 is characterized in that, also comprises:
One second sweep trace, arranged in a crossed manner with this data line;
One second reference signal line, arranged in a crossed manner with this data line;
One second pixel, this second pixel comprises at least:
One the 3rd on-off element electrically connects with this data line and this second sweep trace;
One the 3rd storage capacitors electrically connects with the 3rd on-off element and this second reference signal line;
One the 4th on-off element electrically connects with the 3rd on-off element and this second reference signal line;
One the 4th storage capacitors electrically connects with the 4th on-off element and this second reference signal line;
One the 3rd liquid crystal capacitance electrically connects with the 3rd on-off element and the 3rd storage capacitors; And
One the 4th liquid crystal capacitance electrically connects with the 4th on-off element and the 4th storage capacitors;
One first control signal wire, arranged in a crossed manner with this first and second sweep trace;
One second control signal wire, arranged in a crossed manner with this first and second sweep trace;
One the 5th on-off element electrically connects with this first reference signal line and this first control signal wire;
One the 6th on-off element electrically connects with this first reference signal line, this second control signal wire and a reference voltage signal source electrically connects;
One first unidirectional switch elements electrically connect with this first sweep trace and the 5th on-off element, and electric signal only can unidirectionally be passed to the 5th on-off element from this first sweep trace via this first unidirectional switch elements;
One minion is closed element, electrically connects with this second reference signal line and this second control signal wire;
One the 8th switch element electrically connects with this second reference signal line, this first control signal wire and this reference voltage signal source; And
One second unidirectional switch elements is closed element with this second sweep trace and this minion and is electrically connected, and electric signal only can unidirectionally be passed to this minion pass element from this second sweep trace via this second unidirectional switch elements.
4. liquid crystal indicator as claimed in claim 3 is characterized in that, the control signal that this first control signal wire electrically provides is that the control signal that electrically provides with this second control signal wire is anti-phase.
5. liquid crystal indicator as claimed in claim 3 is characterized in that, this first unidirectional switch elements is thin film transistor (TFT), and its grid and source electrode and this first sweep trace electrically connect, its drain electrode electrically connects with the 5th on-off element; And
This second unidirectional switch elements is thin film transistor (TFT), and its grid and source electrode and this second sweep trace electrically connect, its drain electrode is closed element with this minion and electrically connected.
6. liquid crystal indicator as claimed in claim 4, it is characterized in that, the 5th on-off element is thin film transistor (TFT), and its grid and the electric connection of this first control signal wire, its source electrode and this first single-way switch electrically connect, its drain electrode electrically connects with this first reference signal line;
The 6th on-off element is thin film transistor (TFT), and its grid and the electric connection of this second control signal wire, its source electrode and this reference voltage signal source electrically connect, its drain electrode electrically connects with this first reference signal line;
It is thin film transistor (TFT) that this minion is closed element, and its grid and the electric connection of this second control signal wire, its source electrode and this second single-way switch electrically connect, its drain electrode electrically connects with this second reference signal line; And
The 8th switch element is thin film transistor (TFT), and its grid and the electric connection of this first control signal wire, its source electrode and this reference voltage signal source electrically connect, its drain electrode electrically connects with this second reference signal line.
7. liquid crystal indicator as claimed in claim 6 is characterized in that, this reference voltage signal source provides a ground connection reference voltage.
8. the control method of a liquid crystal indicator in order to control liquid crystal indicator as claimed in claim 1, is characterized in that this control method comprises at least:
The one pixel charging stage first time was provided, and wherein this pixel charging stage first time is to comprise at least:
Utilize this data line to export one first grey scale signal to this first pixel;
Utilize this first sweep trace to export one first start signal to this first on-off element, to import this first grey scale signal to this first storage capacitors and this first liquid crystal capacitance; And
Utilize this first reference signal line to export one second start signal to this second switch element, to import this first grey scale signal to this second storage capacitors and this second liquid crystal capacitance:
The one pixel charging stage second time was provided, and wherein this pixel charging stage second time comprises at least:
Utilize this data line to export one second grey scale signal to this first pixel;
Utilize this first sweep trace to export this first start signal to this first on-off element, to import this second grey scale signal to this first storage capacitors and this first liquid crystal capacitance; And
Utilize this first reference signal line to export one first shutdown signal to this second switch element, so that this second storage capacitors and this second liquid crystal capacitance store this first grey scale signal; And
One normal demonstration stage was provided, comprises at least:
Utilize this first sweep trace to export one second shutdown signal to this first on-off element, so that this first storage capacitors and this first liquid crystal capacitance store this second grey scale signal;
Wherein this first grey scale signal is different with this second grey scale signal.
9. the control method of liquid crystal indicator as claimed in claim 8 is characterized in that, the time of this pixel charging stage second time is less than the time of this pixel charging stage first time.
10. the control method of liquid crystal indicator as claimed in claim 8 is characterized in that, the display brightness of this first grey scale signal representative is less than the display brightness of this second grey scale signal representative.
11. the control method of liquid crystal indicator as claimed in claim 8 is characterized in that, the display brightness of this first grey scale signal representative is greater than the display brightness of this second grey scale signal representative.
12. the control method of a liquid crystal indicator in order to control liquid crystal indicator as claimed in claim 3, is characterized in that this control method comprises at least:
The one pixel charging stage first time was provided, and wherein this pixel charging stage first time is to comprise at least:
Utilize this data line to export one first grey scale signal to this first pixel;
Utilize this first sweep trace to export one first start signal to this first on-off element and this first unidirectional switch elements;
Utilize this first control signal wire to export one second start signal to the 5th on-off element, make this first start signal be passed to this second switch element via first reference signal line; And
Utilize this second control signal wire to export one first shutdown signal to the 6th on-off element;
Wherein this first storage capacitors, this first liquid crystal capacitance, this second storage capacitors, this second liquid crystal capacitance are transfused to this first grey scale signal:
The one pixel charging stage second time was provided, and wherein this pixel charging stage second time comprises at least:
Utilize this data line to export one second grey scale signal to this first pixel;
Utilize this first sweep trace to export this first start signal to this first on-off element;
Utilize this first control signal wire to export one second shutdown signal to the 5th on-off element; And
Utilize this second control signal wire to export one the 3rd start signal to the 6th on-off element, make the signal in this reference voltage signal source be passed to this second switch element and close this second switch element via first reference signal line;
Wherein this first storage capacitors, this first liquid crystal capacitance are transfused to this second grey scale signal, and this second storage capacitors and this second liquid crystal capacitance store this first grey scale signal;
One first normal demonstration stage was provided, utilizes this first sweep trace to export one the 3rd shutdown signal to this first on-off element, so that this first storage capacitors and this first liquid crystal capacitance store this second grey scale signal;
One pixel charging stage for the third time was provided, wherein this pixel charging stage comprises at least for the third time:
Utilize this data line to export one the 3rd grey scale signal to this second pixel;
Utilize this second sweep trace to export one the 4th start signal to the 3rd on-off element and this second unidirectional switch elements;
Utilize this second control signal wire to export the 3rd start signal to this minion and close element, make the 4th start signal be passed to the 4th on-off element via this second reference signal line; And
Utilize this first control signal wire to export one second shutdown signal to the 8th switch element;
Wherein the 3rd storage capacitors, the 3rd liquid crystal capacitance, the 4th storage capacitors, the 4th liquid crystal capacitance are transfused to this second grey scale signal:
The pixel charging stage is provided one the 4th time, and wherein the 4th pixel charging stage comprises at least:
Utilize this data line to export one the 4th grey scale signal to this second pixel;
Utilize this second sweep trace to export the 4th start signal to this first on-off element;
Utilize this second control signal wire to export this first shutdown signal to this minion and close element; And
Utilize this first control signal wire to export this second start signal to the 8th switch element, make the signal in this reference voltage signal source be passed to the 4th on-off element and close the 4th on-off element via this second reference signal line;
Wherein the 3rd storage capacitors, the 3rd liquid crystal capacitance are transfused to the 4th grey scale signal, and the 4th storage capacitors and the 4th liquid crystal capacitance store the 3rd grey scale signal; And
One second normal demonstration stage was provided, utilizes this second sweep trace to export one the 4th shutdown signal to the 3rd on-off element, so that the 3rd storage capacitors and the 3rd liquid crystal capacitance store the 4th grey scale signal.
13. the control method of liquid crystal indicator as claimed in claim 12, it is characterized in that, for the second time and the time of the 4th pixel charging stage is less than this time of pixel charging stage for the third time less than this time of pixel charging stage for the first time time of pixel charging stage for this.
14. the control method of liquid crystal indicator as claimed in claim 12, it is characterized in that, the display brightness of this first grey scale signal representative is less than the display brightness of this second grey scale signal representative, and the display brightness of the 3rd grey scale signal representative is less than the display brightness of the 4th grey scale signal representative.
15. the control method of liquid crystal indicator as claimed in claim 12, it is characterized in that, the display brightness of this first grey scale signal representative is greater than the display brightness of this second grey scale signal representative, and wherein the display brightness of the 3rd grey scale signal representative greater than the display brightness of the 4th grey scale signal representative.
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| CN 200810131624 CN101630099B (en) | 2008-07-14 | 2008-07-14 | Liquid crystal display device and control method thereof |
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| CN 200810131624 CN101630099B (en) | 2008-07-14 | 2008-07-14 | Liquid crystal display device and control method thereof |
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| CN101630099B true CN101630099B (en) | 2013-08-07 |
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| US10891910B2 (en) * | 2018-11-12 | 2021-01-12 | Himax Technologies Limited | Liquid crystal display device |
| CN115657353B (en) * | 2022-12-28 | 2023-04-25 | 惠科股份有限公司 | Pixel circuit, pixel control method and display device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1776492A (en) * | 2005-12-19 | 2006-05-24 | 广辉电子股份有限公司 | Vertical oriented liquid crystal display device and its pixel unit circuit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1776492A (en) * | 2005-12-19 | 2006-05-24 | 广辉电子股份有限公司 | Vertical oriented liquid crystal display device and its pixel unit circuit |
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Address after: Taiwan, China Hsinchu science and Technology Industrial Park, Miaoli County, Southern Town, science Road, No. 160 Applicant after: INNOLUX DISPLAY CORP. Address before: Taiwan, China Hsinchu science and Technology Industrial Park, Miaoli County, Southern Town, science Road, No. 160 Applicant before: CHI MEI OPTOELECTRONICS CORP. |
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Effective date of registration: 20130717 Address after: Taiwan, China Hsinchu science and Technology Industrial Park, Miaoli County, Southern Town, science Road, No. 160 Applicant after: CHI MEI OPTOELECTRONICS CORP. Address before: China Taiwan Tainan County Tainan Science Industrial Park odd Road No. 1 Applicant before: CHI MEI OPTOELECTRONICS CORP. |