CN100561561C - Liquid Crystal Display And Method For Driving - Google Patents
Liquid Crystal Display And Method For Driving Download PDFInfo
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- CN100561561C CN100561561C CNB2006101386457A CN200610138645A CN100561561C CN 100561561 C CN100561561 C CN 100561561C CN B2006101386457 A CNB2006101386457 A CN B2006101386457A CN 200610138645 A CN200610138645 A CN 200610138645A CN 100561561 C CN100561561 C CN 100561561C
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Abstract
The invention discloses a kind of method that drives LCD.At first first pixel voltage is outputed to first pixel in first pixel column to change the transmittance of first pixel, then second pixel voltage is outputed to second pixel in second pixel column to change the transmittance of second pixel.Then open backlight module.In first predetermined point of time of output behind first pixel voltage, the pixel electrode voltage of adjusting in first pixel descends the transmittance of the pixel of winning then.Last second predetermined point of time behind output second pixel voltage, the pixel electrode voltage of adjusting in second pixel makes the transmittance of second pixel descend, and second predetermined point of time is after first predetermined point of time.
Description
Technical field
The present invention relates to a kind of Liquid Crystal Display And Method For Driving, particularly relate to a kind of color list type Liquid Crystal Display And Method For Driving.
Background technology
Along with the development that imaging technique makes rapid progress, have the LCD of characteristics such as thin, the in light weight and low electromagnetic of volume, become the main product of display gradually.
The color list type LCD is to show the three primary colors composition of a pixel successively, and presents color.Each pixel of this color list type LCD for successively by three illuminating sources that send red, green and blue light respectively as back light.In an image time, these sub-pixels show three kinds of data successively, and open red, green and blue light respectively accordingly.Utilize the persistence of vision of human eye, the people can recognize the color of this pixel.
Yet, because must dividing, the LCD of color list type a view data could be fed back in the pixel completely for three times, therefore, the driving power of pixel must be brought up to 180Hz by original 60Hz.For the LCD of color list type, because the driving power of pixel is provided as 180Hz, i.e. the necessary per 5.56 milliseconds of replacings of liquid crystal drive voltage once.Comprised the time that backlight module is lighted in this time of 5.56 milliseconds, and liquid crystal molecule must react before backlight module is lighted and finishes, the time of therefore allowing the liquid crystal molecule reaction is in fact less than 5.56 milliseconds.
With reference to Figure 1A, be depicted as the transmittance and the time relation figure of traditional color list type display panels.T1 is the transmittance of first pixel, and Tn is the transmittance of N pixel.Wherein, first pixel is first pixel column that is positioned at pel array, and the N pixel is the N pixel column that is positioned at pel array.At first, the pixel voltage of correspondence is offered first pixel, make the maximum transmission rate of the pixel of winning equal the transmittance T that is scheduled in fact
MaxThen,, the pixel voltage of correspondence is offered the N pixel, make the maximum transmission rate of N pixel equal the transmittance T that is scheduled in fact at time point t1
MaxThen, between time point t2～t3, the liquid crystal molecule of N pixel is complete reaction not as yet, and promptly the maximum transmission rate of N pixel is in fact less than predetermined transmittance T
MaxThe pixel-by-pixel basis of different lines is received the time point difference of pixel voltage, receives pixel voltage near the pixel of panel lower end is late more more, begins to react so liquid crystal molecule is late more.When backlight module was lighted, the liquid crystal molecule that is positioned at the panel lower end is complete reaction not as yet, and was positioned at the liquid crystal molecule complete reaction on the panel, so cause the situation of display panels top and the bottom brightness irregularities.
In addition, with reference to Figure 1B, be depicted as the curve map of the display panels of Figure 1A.The first pixel P1 and N pixel Pn are Δ L1 in first difference with reference to the transmittance of GTG value G1, and first pixel and N pixel Pn are Δ L2 in second pixel with reference to the difference of the transmittance of GTG value G2.By Figure 1B as can be known, Δ L1 and Δ L2 are much larger than zero, i.e. the degree of gamma curve drift is quite serious.
For panel manufacturers, how to improve because differ from the phenomenon of the brightness disproportionation of the display panels that causes the sweep time of different pixels, and further improve the degree of gamma curve drift, be still a problem that waits to solve.
Summary of the invention
Therefore, the object of the present invention is to provide a kind of LCD and manufacture method thereof, improving the phenomenon of display panels brightness disproportionation, and improve the problem of gamma curve drift.
According to purpose of the present invention, a kind of driving method is proposed, it is applicable to a LCD.First pixel voltage is exported to first pixel in the first row pixel,, then second pixel voltage is exported to second pixel in the secondary series pixel, to change the transmittance of second pixel to change the transmittance of first pixel.Then, open backlight module.Then,, adjust the pixel electrode voltage of first pixel, the transmittance of the pixel of winning is descended in first predetermined point of time of output behind first pixel voltage.Last second predetermined point of time behind output second pixel voltage, the pixel electrode voltage of adjusting in second pixel makes the transmittance of second pixel descend, and second predetermined point of time is after first predetermined point of time.
Also provide a kind of LCD according to purpose of the present invention, it comprises backlight module and pel array.Pel array comprises first pixel and second pixel, first pixel in the first row pixel is for being used to receive first pixel voltage, to change the transmittance of first pixel, second pixel of secondary series pixel is for being used to receive second pixel voltage, to change the transmittance of second pixel, drive the first row pixel and secondary series pixel successively.Wherein, first predetermined point of time after first pixel receives first pixel voltage, adjust the pixel electrode voltage of first pixel, so that the transmittance of first pixel descends, second predetermined point of time after second pixel receives second pixel voltage, adjust the pixel electrode voltage of second pixel, so that the transmittance of second pixel descends, and second predetermined point of time is after first predetermined point of time.
For above-mentioned purpose of the present invention, feature and advantage are become apparent, below will enumerate a preferred implementation and also be elaborated in conjunction with the accompanying drawings.
Description of drawings
Figure 1A is depicted as the transmittance and the time relation figure of traditional display panels;
Figure 1B is depicted as the gamma graph of the display panels of Figure 1A;
Figure 2 shows that synoptic diagram according to the LCD of first embodiment of the invention;
Figure 3 shows that synoptic diagram according to the pel array of first embodiment of the invention;
Figure 4 shows that process flow diagram according to the liquid crystal display driving method of first embodiment of the invention;
When Fig. 5 A is depicted as according to the driving method of the LCD of the use present embodiment of first embodiment of the invention, first example of the transmittance of pixel and time relation figure;
When Fig. 5 B～5C is depicted as according to the driving method of the LCD of the use present embodiment of first embodiment of the invention, second example of the transmittance of pixel and time relation figure and the 3rd example;
When Fig. 5 D～5E is depicted as according to the driving method of the LCD of the use present embodiment of first embodiment of the invention, the 4th example of the transmittance of pixel and time relation figure and the 5th example;
When Fig. 5 F is depicted as according to the driving method of the LCD of the use present embodiment of first embodiment of the invention, the 6th example of the transmittance of pixel and time relation figure;
Figure 6 shows that the gamma graph of the LCD of first embodiment of the invention;
Fig. 7 A is depicted as the synoptic diagram according to the display panels of second embodiment of the invention;
Fig. 7 B figure is depicted as the sectional view according to the part display panels 700 of second embodiment of the invention;
Figure 8 shows that process flow diagram according to the driving method of second embodiment of the invention;
Figure 9 shows that the drive waveforms figure of the display panels of Fig. 7 A;
When Fig. 9 A is depicted as according to the driving method of the LCD of the use present embodiment of second embodiment of the invention, first example of the transmittance of pixel and time relation figure;
When Fig. 9 B～9C is depicted as according to the driving method of the LCD of the use present embodiment of second embodiment of the invention, second example of the transmittance of pixel and time relation figure and the 3rd example;
When Fig. 9 D～9E is depicted as according to the driving method of the LCD of the use present embodiment of second embodiment of the invention, the 4th example of the transmittance of pixel and time relation and the 5th example;
When Fig. 9 F is depicted as according to the driving method of the LCD of the use present embodiment of second embodiment of the invention, the 6th example of the transmittance of pixel and time relation figure.
Wherein, Reference numeral:
10: upper substrate
12: reference electrode
20: thin film transistor base plate
22: pixel electrode
24: public electrode
30: liquid crystal layer
200: LCD
210: backlight module
220,700: display panels
230,710: pel array
240,720: scan drive circuit
242: sweep trace
250,730: data drive circuit
252: data line
740: control circuit
742: public electrode wire
Embodiment
LCD of the present invention is for by adjusting the time point of lighting and closing of backlight module, makes the light intensity value approximately equal of different pixels, with the phenomenon of the brightness disproportionation that improves display panels, and overcomes the problem of gamma curve drift.
First embodiment
With reference to Fig. 2, be depicted as synoptic diagram according to the LCD of the first embodiment of the present invention.With reference to Fig. 3, be depicted as synoptic diagram simultaneously according to the pel array of the first embodiment of the present invention.LCD 200 comprises backlight module 210 and display panels 220, and this display panels 220 has a pel array 230.Pel array 230 comprises a plurality of pixel column L1～Ln, and pixel wherein is coupled to scan drive circuit 240 by sweep trace 242 respectively, and is coupled to data drive circuit 250 by data line 252.Scan drive circuit 240 is used for scanning voltage is offered this pixel, and data drive circuit 250 is used for pixel voltage is offered pairing pixel, to change the transmittance of this pixel.
With reference to Fig. 4, be depicted as process flow diagram according to the driving method of the LCD of the first embodiment of the present invention.Simultaneously with reference to Fig. 5 A, when being depicted as the driving method according to the LCD of the use present embodiment of the first embodiment of the present invention, first example of the transmittance of pixel and time relation figure.At first, execution in step 410 when very first time point t1 makes the first pixel P1 of the row pixel L1 that wins receive first pixel voltage that data drive circuit 250 is exported, to change the transmittance T1 of first pixel.Then, execution in step 420 when the second time point t2 makes the N pixel Pn of N row pixel Ln receive the n pixel voltage that data drive circuit 250 is exported, to change the transmittance Tn of N pixel.Then, execution in step 430 is opened backlight module 210.Then, during the first predetermined point of time t3 behind data drive circuit 250 output first pixel voltage, execution in step 440, data drive circuit 250 is exported to the first pixel P1 with first compensating signal, descend to adjust the pixel electrode voltage of first pixel, to make the win transmittance T1 of pixel.Then, during n predetermined point of time t4 behind data drive circuit 250 output n pixel voltages, execution in step 450, data drive circuit 250 is exported to N pixel Pn with the n compensating signal, to adjust the pixel electrode voltage of N pixel, make the transmittance Tn of N pixel descend.
It should be noted that in first embodiment suppose that first pixel voltage that first pixel is received equals the n pixel voltage that the N pixel is received in fact, promptly the maximal value of the transmittance T1 of first pixel equals the transmittance T of N pixel in fact
nMaximal value, the maximum transmission rate T shown in Fig. 5 A
MaxBacklight module light during Δ t
ONIn, the transmittance T1 of first pixel is the first light intensity value B to the integrated value of time
1, the transmittance Tn of N pixel is N light intensity value Bn to the integrated value of time.Preferably, the difference of the first light intensity value B1 and N light intensity value Bn is less than 20% of the first light intensity value B1.Perhaps, the first light intensity value B1 equals N light intensity value Bn in fact.
Preferably, open backlight module 210 greater than zero back, light state to enter one, and before zero, close backlight module 210, to enter a bit dark state at the transmittance Tn of N pixel at the transmittance T1 of first pixel.More particularly, after the transmittance of first pixel is greater than zero, and before the N pixel has the maximum transmission rate during in the unlatching backlight module, to enter illuminating state; And after first pixel has the maximum transmission rate, and before the transmittance of N pixel is less than zero during close backlight module 210, with the dark state of inlet point.
With reference to Fig. 5 B～5C, when being depicted as the driving method according to the LCD of the use present embodiment of the first embodiment of the present invention, second example of the transmittance of pixel and time relation figure and the 3rd example.Different with Fig. 5 A is Δ t during backlight lightening
ONIn, comprise Δ t during first son
B1With Δ t during second son
B2Δ t during first son
B1In, backlight module 210 maintains first brightness, and during second son Δ t
B2In, backlight module 210 maintains second brightness.Wherein, first brightness is not equal to second brightness.Shown in Fig. 5 B, first brightness is greater than second brightness; And shown in Fig. 5 C, first brightness also can be less than second brightness.
With reference to Fig. 5 D～5E, when being depicted as the driving method according to the LCD of the use present embodiment of the first embodiment of the present invention, the 4th example of the transmittance of pixel and time relation and the 5th example.Different with Fig. 5 B is Δ t during backlight lightening
ONIn, comprise Δ t during first son
C1With Δ during second son
Tc2, and Δ t during the 3rd son
C3Δ t during first son
C1In, backlight module 210 maintains first brightness, Δ t during second son
C2In, backlight module 210 maintains second brightness, and during the 3rd son Δ t
C3In, backlight module 210 maintains the 3rd brightness.Wherein, first brightness is not equal to the 3rd brightness, and second brightness is almost nil.Shown in Fig. 5 D, first brightness is greater than the 3rd brightness; And shown in Fig. 5 E, first brightness also can be less than the 3rd brightness.
With reference to Fig. 5 F, when being depicted as the driving method according to the LCD of the use present embodiment of one embodiment of the invention, the 6th example of the transmittance of pixel and time relationship.Identical with Fig. 5 D is Δ t during backlight lightening
ONIn, comprise Δ t during first son
D1With Δ t during first son
D2, and Δ t during the 3rd son
D3Δ t during first son
D1In, backlight module 210 maintains first brightness, Δ t during second son
D2In, backlight module 210 maintains second brightness, and during the 3rd son Δ t
D3In, backlight module 210 maintains the 3rd brightness.Yet different with Fig. 5 D is that first brightness equals the 3rd brightness in fact.
With reference to Fig. 6, be depicted as the gamma graph of the LCD of first embodiment of the invention.Backlight module method of adjustment with Fig. 5 A is an example, and when the unlatching of 200 pairs of backlight modules 210 of LCD and time of closing were adjusted, first with reference to GTG value G1, the transmittance of the first pixel P1 is the transmittance of N pixel Pn no better than.And in second with reference to GTG value G2, the transmittance of the first pixel P1 is the transmittance of N pixel Pn no better than also.Therefore, the driving method of the LCD of present embodiment can solve the problem of the serious drift of gamma curve of LCD in the past effectively.
Second embodiment
With reference to Fig. 7 A, be depicted as synoptic diagram according to the LCD of second embodiment of the invention.Different with first embodiment is that in display panels 700, a plurality of sub-viewing area A1～An are divided in the viewing area of pel array 710.Each sub-viewing area comprises the multiple row pixel, and these pixels are coupled to scan drive circuit 720 and data drive circuit 730 respectively.In addition, one end of the memory capacitance of the multiple row pixel of the first sub-viewing area A1 is coupled to the first public electrode wire CL1, (label of line belongs to the label of line, the code name of signal belongs to the code name of signal) end of the memory capacitance of the multiple row pixel of the second sub-viewing area A2 is coupled to the second public electrode wire CL2, and the end to the memory capacitance of the multiple row pixel of the sub-viewing area An of N is coupled to N public electrode wire CLn by that analogy.Control circuit 740 is used to adjust public electrode wire V
Com1～V
ComNVoltage.
With reference to figure 7B, be depicted as sectional view according to the part display panels 700 of second embodiment of the invention.Display panels 700 comprises upper substrate 10, thin film transistor base plate 20 and liquid crystal layer 30.Upper substrate 10 comprises reference electrode 12, and thin film transistor base plate 20 comprises pixel electrode 22 and public electrode 24.Liquid crystal layer 30 is between upper substrate 10 and thin film transistor base plate 20.The reference electrode 12 of upper substrate, pixel electrode 22 is equivalent to a pixel capacitance with liquid crystal layer 30, with capacitance stores between pixel electrode 22 and public electrode 24.Pixel electrode 22 couples with public electrode 24, and public electrode 24 is coupled to control circuit 740 by the first public electrode wire CL1.Voltage V as the first public electrode wire CL1 of control circuit 740 output
Com1When changing, voltage V
Com1Variation will be coupled to pixel electrode 22 by memory capacitance so that the voltage of respective pixel electrode 22 correspondingly changes, and then change the transmittance of pixel.
Next will be example with first pixel and N pixel, the problem of how second embodiment of the invention being improved effectively the brightness disproportionation of panel be described in detail, and further is provided for improving a method of the luminance efficiency of display panels.Wherein, the first pixel P1 is arranged in the first sub-viewing area A1, and is coupled to the first sweep trace G1; N pixel Pn is arranged in the sub-viewing area An of N, and is coupled to N sweep trace Gn.With reference to Fig. 8, it shows the process flow diagram according to the driving method of second embodiment of the invention.And, be depicted as the drive waveforms figure of the display panels of Fig. 7 with reference to Fig. 9.Simultaneously with reference to Fig. 9 A, when being depicted as description according to the driving method of the LCD of the use present embodiment of second embodiment of the invention, first example of the transmittance of pixel and time relation figure.At first, execution in step 810, the first sweep trace G1 activations when very first time point t1 are with the thin film transistor (TFT) of the conducting first pixel P1.Then, the first pixel P1 of conducting receives first pixel voltage, to change the transmittance T1 of the first pixel P1.Then, sweep trace G2～Gn-1 activation successively.Then, execution in step 820, the N sweep trace Gn activations when the second time point t2 are with the thin film transistor (TFT) of conducting N pixel.Then, the N pixel of conducting receives the n pixel voltage, to change the transmittance Tn of N pixel.Then, execution in step 830 is opened backlight module.When the 3rd time point t3, first pixel has arrived maximum transmission rate T
Max, promptly liquid crystal molecule has reacted and has finished.When the 4th time point t4, the N pixel has arrived maximum transmission rate T
Max, promptly liquid crystal molecule has reacted and has finished.Then, during the first predetermined point of time t5 behind data drive circuit 730 output first pixel voltage, execution in step 840 is adjusted the voltage V of the first public electrode wire CL1 by control circuit 740
Com1, to adjust the pixel electrode voltage V of the first pixel P1
P1, the transmittance T1 of the pixel of winning is descended.When the transmittance T1 of the first pixel P1 descended up to time point t6, the thin film transistor (TFT) of first pixel P1 conducting once more changed once more to receive next pixel voltage, to make the win transmittance of pixel P1.Then, control circuit 740 is in turn adjusted the voltage of other public electrode wire, to adjust the pixel electrode voltage of respective pixel, makes the transmittance of respective pixel descend.Then, during the second predetermined point of time t7 behind data drive circuit 730 output N pixel voltages, execution in step 850 is adjusted the voltage V of N public electrode wire CLn by control circuit 740
ComN, to adjust the pixel electrode voltage V of N pixel
PN, make the transmittance Tn of N pixel descend.Wherein, principle that the time point that the backlight module of present embodiment is opened and closed is selected and the backlight module of first embodiment are similar, therefore do not repeat them here.
Identical with first embodiment, in a second embodiment, suppose that first pixel voltage that first pixel is received equals second pixel voltage that the N pixel is received in fact, promptly the maximal value of the transmittance T1 of first pixel equals the maximal value of the transmittance Tn of N pixel in fact, the maximum transmission rate T shown in Fig. 9 A
MaxΔ t during backlight lightening
ONIn, the transmittance T1 of first pixel is the first light intensity value B1 to the integrated value of time, the transmittance Tn of N pixel is N light intensity value Bn to the integrated value of time.Preferably, the difference of the first light intensity value B1 and N light intensity value Bn is less than 20% of the first light intensity value B1.Perhaps, the first light intensity value B1 equals N light intensity value Bn in fact.
With reference to Fig. 9 B～9C, when it shows according to the driving method of the LCD of the use present embodiment of second embodiment of the invention, second example of the transmittance of pixel and time relation figure and the 3rd example.Different with Fig. 9 A is Δ t during backlight lightening
ONIn, comprise Δ t during first son
B1With Δ t during second son
B2Δ t during first son
B1In, backlight module maintains first brightness, and during second son Δ t
B2In, backlight module maintains second brightness.Wherein, first brightness is not equal to second brightness.Shown in Fig. 9 B, first brightness is greater than second brightness; And shown in Fig. 9 C, first brightness also can be less than second brightness.
With reference to Fig. 9 D～9E, when it shows according to the driving method of the LCD of the use present embodiment of second embodiment of the invention, the 4th example of the transmittance of pixel and time relation figure and the 5th example.Different with Fig. 9 B is Δ t during backlight lightening
ONIn, comprise Δ t during first son
C1With Δ t during second son
C2, and Δ t during the 3rd son
C3Δ t during first son
C1In, backlight module maintains first brightness, Δ t during second son
C2In, backlight module maintains second brightness, and during the 3rd son Δ t
C3In, backlight module maintains the 3rd brightness.Wherein, first brightness is not equal to the 3rd brightness, and second brightness is almost nil.Shown in Fig. 9 D, first brightness is greater than the 3rd brightness; And shown in Fig. 9 E, first brightness also can be less than the 3rd brightness.
With reference to Fig. 9 F, when it shows according to the driving method of the LCD of the use present embodiment of second embodiment of the invention, the 6th example of the transmittance of pixel and time relation figure.Identical with Fig. 9 D is Δ t during backlight lightening
ONIn, comprise Δ t during first son
D1With Δ t during second son
D2, and Δ t during the 3rd son
D3Δ t during first son
D1In, backlight module maintains first brightness, Δ t during second son
D2In, backlight module maintains second brightness, and during the 3rd son Δ t
D3In, backlight module maintains the 3rd brightness.Yet different with Fig. 9 D figure is that first brightness equals the 3rd brightness in fact.
Fig. 5 A is compared with Fig. 9 A.In Fig. 5 A, before next picture shows signal drove, after the compensating signal that must wait until all pixels write successively and finishes, each bar sweep trace of activation in turn was to write next picture shows signal again.By Fig. 9 and Fig. 9 A as can be known, in the present embodiment, the first pixel P1 needn't wait until that the compensating signal operation of other regional pixel (for example N pixel Pn) finishes, and the first sweep trace G1 can activation receive next pixel voltage to drive the first pixel P1.Thus, compensating signal running time and next pixel voltage signal are operated simultaneously, can prolong the time that pixel maintains the maximum transmission rate, make the light intensity value of each pixel improve, to reduce display panels luminance loss's problem effectively.In like manner, the driving method of the LCD shown in Fig. 9 B～9D also can reach the purpose that reduces the display panels luminance loss, does not therefore repeat them here.
Compare with color list type LCD in the past, because the reaction time of liquid crystal molecule is lacked (about 5.56 milliseconds), make that the following pixel liquid crystal extent of reaction differs on the display panels, and then cause the phenomenon of the brightness disproportionation of display panels, and the problem of gamma curve drift.The time point that the disclosed LCD utilization adjustment of the above embodiment of the present invention backlight module is opened and closed makes the transmittance of each pixel equate with the integrated value of backlight lightening time is intimate, therefore can solve the display panels brightness disproportionation effectively, and the problem of gamma curve drift.In addition, utilize to adjust the mode of the voltage of public electrode wire, increase the reaction time of liquid crystal molecule, make all pixels can both obtain maximum luminance efficiency, with the luminance loss's that reduces LCD problem.
The preferred embodiment that the present invention describes can not be thought limitation of the invention.Obviously under the situation that does not break away from the spirit and scope of the present invention, those of ordinary skill in the art can make various improvement and variation to the present invention.Therefore, the invention is intended to cover improvement and variation within all scopes that fall into claims and equivalent thereof.
Claims (26)
1. a driving method is applicable to a LCD, and this LCD comprises a pel array and a backlight module, and this pel array comprises one first a row pixel and a secondary series pixel, it is characterized in that this driving method comprises:
(a) one first pixel voltage is exported to one first pixel in this first row pixel,, then one second pixel voltage is exported to one second pixel in this secondary series pixel, to change the transmittance of this second pixel to change the transmittance of this first pixel;
(b) open this backlight module;
(c) this first pixel and one first public electrode wire couple, one first predetermined point of time behind this first pixel voltage of output, by adjusting the voltage of this first public electrode wire, adjust the pixel electrode voltage of this first pixel, make the transmittance of this first pixel descend; And
(d) this second pixel and one second public electrode wire couple, one second predetermined point of time behind this second pixel voltage of output, by adjusting the voltage of this second public electrode wire, adjust the pixel electrode voltage of this second pixel, make the transmittance of this second pixel descend, this second predetermined point of time is after this first predetermined point of time;
Wherein, when this first pixel voltage equals this second pixel voltage, this backlight module light during in, the transmittance of this first pixel is one first light intensity value to the integrated value of time, the transmittance of this second pixel is one second light intensity value to the integrated value of time, and this first light intensity value equals this second light intensity value.
2. driving method according to claim 1 is characterized in that, the difference of this first light intensity value and this second light intensity value is less than 20% of this first light intensity value.
3. driving method according to claim 1, it is characterized in that, in this step (c), by exporting one first frame compensation signal to this first pixel,, make the transmittance of this first pixel descend to adjust the pixel electrode voltage of this first pixel, and in this step (d), by exporting one second frame compensation signal to this second pixel,, make the transmittance of this second pixel descend to adjust the pixel electrode voltage of this second pixel.
4. driving method according to claim 1, it is characterized in that, this backlight module is opened greater than zero back at the transmittance of this first pixel, light state to enter one, this backlight module is closed before transmittance is less than zero in this second pixel, entering a bit dark state, this backlight module light during in, this backlight module maintains one first brightness.
5. driving method according to claim 4 is characterized in that, this backlight module after the transmittance of this first pixel is greater than zero, with this second pixel have before the maximum transmission rate during in open, light state to enter one.
6. driving method according to claim 4 is characterized in that, this backlight module is opened after this second pixel has the maximum transmission rate, lights state to enter one.
7. driving method according to claim 4 is characterized in that, this backlight module reaches minimum value with the transmittance of this second pixel after this first pixel has the maximum transmission rate before during in close, to enter a bit dark state.
8. driving method according to claim 1, it is characterized in that, this backlight module maintain light one during in, reach during one second son during comprising during this period one first son, this backlight module maintains one first brightness in during this first son, during this second son in this backlight module maintain one second brightness.
9. driving method according to claim 8 is characterized in that, this first brightness is not equal to this second brightness.
10. driving method according to claim 1, it is characterized in that, this backlight module maintain light one during in, during comprising during this period one first son, during one second son and during one the 3rd son, during this second son between during this first son and the 3rd son during between, this backlight module maintains one first brightness in during this first son, this backlight module maintains one second brightness in during this second son, this backlight module maintains one the 3rd brightness in during the 3rd son, and this second brightness is close to zero.
11. driving method according to claim 10 is characterized in that, this first brightness is not equal to the 3rd brightness.
12. driving method according to claim 10 is characterized in that, this first brightness equals the 3rd brightness.
13. driving method according to claim 10 is characterized in that, this backlight module switch is more than twice.
14. a LCD is characterized in that, comprising:
One backlight module; And
One pel array comprises:
One first a row pixel and a secondary series pixel, one first pixel in this first row pixel is in order to receive one first pixel voltage, to change the transmittance of this first pixel, one second pixel of this secondary series pixel is in order to receive one second pixel voltage, to change the transmittance of this second pixel, drive this first row pixel and this secondary series pixel successively;
Wherein, this first pixel couples one first public electrode wire, this second pixel couples one second public electrode wire, one first predetermined point of time after this first pixel receives this first pixel voltage, by adjusting the voltage of this first public electrode wire, adjust the pixel electrode voltage of this first pixel, so that the transmittance of this first pixel descends, one second predetermined point of time after this second pixel receives this second pixel voltage, by adjusting the voltage of this second public electrode wire, adjust the pixel electrode voltage of this second pixel, so that the transmittance of this second pixel descends, this second predetermined point of time is after this first predetermined point of time;
Wherein, when this first pixel voltage equals this second pixel voltage, this backlight module light during in, the transmittance of this first pixel is one first light intensity value to the integrated value of time, the transmittance of this second pixel is one second light intensity value to the integrated value of time, and this first light intensity value equals this second light intensity value.
15. LCD according to claim 14 is characterized in that, the difference of this first light intensity value and this second light intensity value is less than 20% of this first light intensity value.
16. LCD according to claim 14, it is characterized in that, this first pixel is also in order to receive one first frame compensation signal, to adjust the pixel electrode voltage of this first pixel, make the transmittance of this first pixel descend, this second pixel to adjust the pixel electrode voltage of this second pixel, makes the transmittance of this second pixel descend also in order to receive one second frame compensation signal.
17. LCD according to claim 14, it is characterized in that, this backlight module is opened greater than after zero at the transmittance of this first pixel, light state to enter one, this backlight module was closed before the transmittance of this second pixel reaches minimum value, entering a bit dark state, this backlight module light during in, this backlight module maintains one first brightness.
18. LCD according to claim 17 is characterized in that, this backlight module after the transmittance of this first pixel is greater than zero and this second pixel before having the maximum transmission rate during in unlatching, light state to enter one.
19. LCD according to claim 17 is characterized in that, this backlight module is opened after this second pixel has the maximum transmission rate, lights state to enter one.
20. LCD according to claim 17 is characterized in that, this backlight module after this first pixel has the maximum transmission rate and the transmittance of this second pixel before reaching minimum value during in close, to enter a bit dark state.
21. LCD according to claim 14, it is characterized in that, this backlight module maintain light one during in, reach during one second son during comprising during this period one first son, this backlightly maintains one first brightness in during this first son, in during this second son, this backlight module maintains one second brightness.
22. LCD according to claim 21 is characterized in that, this first brightness is not equal to this second brightness.
23. LCD according to claim 14, it is characterized in that, this backlight module maintain light one during in, during comprising during this period one first son, during one second son and during one the 3rd son, during this second son between during this first son and the 3rd son during between, this backlight module maintains one first brightness in during this first son, this backlight module maintains one second brightness in during this second son, this backlight module maintains one the 3rd brightness in during the 3rd son, and this second brightness is close to zero.
24. LCD according to claim 23 is characterized in that, this first brightness is not equal to the 3rd brightness.
25. LCD according to claim 23 is characterized in that, this first brightness equals the 3rd brightness.
26. LCD according to claim 23 is characterized in that, this backlight module switch is more than twice.
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| CNB2006101386457A CN100561561C (en) | 2006-11-08 | 2006-11-08 | Liquid Crystal Display And Method For Driving |
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| CN105632351B (en) * | 2016-03-10 | 2018-06-26 | 广东欧珀移动通信有限公司 | The display effect adjusting method of electronic device and display screen with display screen |
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