CN101738764A - Liquid crystal display panel, driving method of liquid crystal display panel and liquid crystal display device - Google Patents

Liquid crystal display panel, driving method of liquid crystal display panel and liquid crystal display device Download PDF

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CN101738764A
CN101738764A CN200810181241A CN200810181241A CN101738764A CN 101738764 A CN101738764 A CN 101738764A CN 200810181241 A CN200810181241 A CN 200810181241A CN 200810181241 A CN200810181241 A CN 200810181241A CN 101738764 A CN101738764 A CN 101738764A
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voltage
pixel
sub
liquid crystal
pixel electrode
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CN101738764B (en
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谢明峰
陈建宏
刘建成
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Chi Mei Optoelectronics Corp
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Chi Mei Optoelectronics Corp
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Abstract

The invention discloses a liquid crystal display panel, comprising a liquid crystal layer, a common electrode, a first sub-pixel and a drive unit. The first sub-pixel is provided with a first pixel electrode and a second pixel electrode; the drive unit enables a potential difference between a first pixel electrode and the common electrode to be equal to first voltage according to the first sub-pixel data, and the absolute value of the first voltage is one of first gamma voltage sets; and the drive unit enables a potential difference between a second pixel electrode and the common electrode to be equal to second voltage according to the first sub-pixel data, and the absolute value of the second voltage is one of second gamma voltage sets. The first gamma voltage sets enable the liquid crystal layer corresponding to the first pixel electrode to generate grey-level inversion, and the second gamma voltage sets enable the liquid crystal layer corresponding to the second pixel electrode not to generate grey-level inversion.

Description

The driving method of display panels, display panels and liquid crystal indicator
Technical field
The present invention relates to the driving method and the liquid crystal indicator of a kind of display panels, display panels.
Background technology
Along with showing development of science and technology, display device and products thereof is used by people widely, and liquid crystal indicator is because of having that build is frivolous, low power consumption and advantageous characteristic such as radiationless, replace the conventional cathode ray tube display device gradually, and be applied to the electronic product of numerous species.
With reference to shown in Figure 1, existing display panels has a plurality of display pixels, and each display pixel 1 has red at least sub-display pixel 1R, green sub-display pixel 1G and blue sub-display pixel 1B.Wherein, each sub-display pixel (comprising red sub-display pixel 1R, green sub-display pixel 1G and blue sub-display pixel 1B) can be made of colored filter substrate 11, thin film transistor base plate 12, liquid crystal layer 13 and two polarization plates 14,15.
Sub-display pixel 1R is an example with redness, liquid crystal layer 13 is arranged between the pixel electrode 121 of the counter electrode 111 of colored filter substrate 11 and thin film transistor base plate 12, and the red filter layer 112R of colored filter substrate 11 is corresponding with the pixel electrode 121 of thin film transistor base plate 12.The polarizing axis of polaroid 14,15 is mutually orthogonal and be arranged at a side of colored filter substrate 11 and a side of thin film transistor base plate 12 respectively.
In addition, what green sub-display pixel 1G and blue sub-display pixel 1B were different with red sub-display pixel 1R is, green sub-display pixel 1G and blue sub-display pixel 1B replace red filter layer 112R among the red sub-display pixel 1R with green filter layer 112G and blue color filter layer 112B respectively.
During work, the light process polaroid 15 that the backlight module (not shown) is sent is to have specific polarization direction, change the polarization direction of light then through liquid crystal layer 13 with the difference of voltage that foundation liquid crystal layer 13 is born, then export ruddiness, green glow and blue light to polaroid 14 via red filter layer 112R, green filter layer 112G and blue color filter layer 112B to filter respectively respectively.Wherein, polaroid 14 forms shades of colour according to ruddiness, green glow and the blue light of ruddiness, green glow and blue light polarization direction output varying strength separately.
In general, the nd of liquid crystal layer 13 can design according to actual demand, wherein, n is the extraordinary refractive index (extraordinary index of refraction) of liquid crystal layer 13 and the difference between the ordinary refractive index (ordinary index of refraction), and d is the thickness of liquid crystal layer 13.Yet, when reality is made display panels, may since processing procedure difference cause actual volume production the included liquid crystal layer 13 of display nd and originally the value estimated of designing institute was different.
For instance, to cause the nd of liquid crystal layer 13 owing to processing procedure difference is example between 320nm～335nm, with reference to shown in Figure 2, Fig. 2 shows vertical orientation type (Vertical Alignment, VA) in the display panels, light bears relation between the voltage to the transmissivity of liquid crystal layer and liquid crystal layer, curve LR1 wherein, LG1 and LB1 represent respectively when the nd of liquid crystal layer 13 is 320nm, ruddiness, green glow and blue light bear relation between the voltage V0 to the transmissivity of liquid crystal layer 13 and liquid crystal layer, and curve LR2, LG2 and LB2 represent respectively when the nd of liquid crystal layer 13 is 335nm, ruddiness, green glow and blue light bear relation between the voltage V0 to the transmissivity T0 of liquid crystal layer 13 and liquid crystal layer 13, wherein, curve LB1 is when maximum transmission rate, liquid crystal layer 13 voltage that bears is about 4.1V, and curve LB2 is when maximum transmission rate, and liquid crystal layer 13 voltage that bears is about 3.9V.
In above-mentioned example, different display panels is different because of processing procedure difference at the pairing driving voltage of maximum transmission rate, and designing the maximum voltage that liquid crystal layer 13 born, the dealer need be lower than above-mentioned 3.9V, with the nd that avoids causing liquid crystal layer 13 in the display panels because of processing procedure difference to the calculating of the maximum transmission rate of the pairing liquid crystal layer of the first sub-pixel PB via Fig. 1, and obtain producing the problem of grayscale invert, promptly avoid in some grey level range, occurring the abnormal occurrence that low gray level brightness is higher than high grade grey level brightness.
Yet, it only is 0.309,0.368 and 0.408 to transmissivity T1R (3.8V), T1G (3.8V), the T1B (3.8V) of liquid crystal layer 13 (is that 3.8V is an example with born maximum voltage) that above-mentioned design but causes ruddiness, green glow and blue light, and ruddiness, green glow and blue light can't effectively be utilized the transmissivity of liquid crystal layer 13, and then the contrast of the shown picture of display panels can't be improved.
Therefore, how to provide a kind of and can improve picture contrast, still can avoid the display panel and the display device of grayscale invert, just one of important topic of current display industry.
Summary of the invention
Because above-mentioned problem, purpose of the present invention one provides a kind of and can improve picture contrast again, still can avoid the display panel and the display device of grayscale invert.
For achieving the above object, a kind of display panels according to the present invention comprises liquid crystal layer, public electrode, first sub-pixel and driver element.First sub-pixel has first pixel electrode and second pixel electrode.Driver element makes the potential difference (PD) between first pixel electrode and public electrode equal first voltage according to first sub-pixel data, the absolute value of first voltage be the first an ancient woman's ornament agate voltage group one of them, and driver element makes the potential difference (PD) between second pixel electrode and public electrode equal second voltage according to first sub-pixel data, the absolute value of second voltage be the second an ancient woman's ornament agate voltage group one of them.The first an ancient woman's ornament agate voltage group makes the pairing liquid crystal layer of first pixel electrode produce grayscale invert, and the second an ancient woman's ornament agate voltage group makes the pairing liquid crystal layer of second pixel electrode not produce grayscale invert.
In addition, for achieving the above object, driving method according to a kind of display panels of the present invention, wherein display panels comprises liquid crystal layer, public electrode and first sub-pixel, first sub-pixel has first pixel electrode and second pixel electrode, driving method may further comprise the steps: make the potential difference (PD) between first pixel electrode and public electrode equal first voltage according to first sub-pixel data, the absolute value of first voltage be the first an ancient woman's ornament agate voltage group one of them; And make the potential difference (PD) between second pixel electrode and public electrode equal second voltage according to first sub-pixel data, the absolute value of second voltage be the second an ancient woman's ornament agate voltage group one of them, wherein, the first an ancient woman's ornament agate voltage group makes the pairing liquid crystal layer of first pixel electrode produce grayscale invert, and the second an ancient woman's ornament agate voltage group makes the pairing liquid crystal layer of second pixel electrode not produce grayscale invert.
And for achieving the above object, a kind of liquid crystal indicator according to the present invention comprises backlight module and display panels.Display panels is relative with backlight module and establish, and display panels has liquid crystal layer, public electrode, first sub-pixel and driver element.Sub-pixel has first pixel electrode and second pixel electrode.Driver element makes the potential difference (PD) between first pixel electrode and public electrode equal first voltage according to first sub-pixel data, the absolute value of first voltage be the first an ancient woman's ornament agate voltage group one of them, and driver element makes the potential difference (PD) between second pixel electrode and public electrode equal second voltage according to first sub-pixel data, the absolute value of second voltage be the second an ancient woman's ornament agate voltage group one of them.The first an ancient woman's ornament agate voltage group makes the pairing liquid crystal layer of first pixel electrode produce grayscale invert, and the second an ancient woman's ornament agate voltage group makes the pairing liquid crystal layer of second pixel electrode not produce grayscale invert.
In sum, driving method and liquid crystal indicator according to display panels of the present invention, display panels make the pairing liquid crystal layer of first pixel electrode produce grayscale invert according to the first an ancient woman's ornament agate voltage group, the second an ancient woman's ornament agate voltage group makes the pairing liquid crystal layer of second pixel electrode not produce grayscale invert, therefore, the different problems that produce grayscale invert of value estimated of the display panels of the present invention nd that can avoid causing the pairing liquid crystal layer of first sub-pixel and original designing institute because of processing procedure difference.In addition in the present invention, light can be greater than light in the available liquid crystal display panel to the transmissivity of liquid crystal layer to the maximum transmission rate of the pairing liquid crystal layer of first sub-pixel, effectively utilizing the transmissivity of light, and then the contrast of the shown picture of display panels is improved to the pairing liquid crystal layer of first sub-pixel.
Description of drawings
For above and other objects of the present invention, feature, advantage are become apparent more, in conjunction with the accompanying drawings embodiment is elaborated, in the accompanying drawings:
Fig. 1 represents the display pixel of existing display panels;
Fig. 2 represents that light in the vertical alignment-type liquid crystal display panel bears relation between the voltage to the transmissivity of liquid crystal layer and liquid crystal layer;
Fig. 3 and Fig. 4 represent display panels of the present invention, and wherein Fig. 3 is the block schematic diagram of display panels of the present invention, and Fig. 4 is the fragmentary cross-sectional view of display panels of the present invention;
The detailed circuit of pel array in Fig. 5 A and Fig. 5 B presentation graphs 3, wherein Fig. 5 A is respectively different embodiment with Fig. 5 B;
Fig. 6 is illustrated in the vertical alignment-type liquid crystal display panel of first embodiment of the invention, and light bears relation between the voltage to the transmissivity of liquid crystal layer and liquid crystal layer; And
Fig. 7 is illustrated in the torsion nematic liquid crystal display panel of second embodiment of the invention, and light bears relation between the voltage to the transmissivity of liquid crystal layer and liquid crystal layer.
[primary clustering symbol description]
1: display pixel
1B: blue sub-display pixel
1G: green sub-display pixel
1R: red sub-display pixel
11: colored filter substrate
111: counter electrode
112B: blue color filter layer
112G: green filter layer
112R: red filter layer
12: thin film transistor base plate
121: pixel electrode
13: liquid crystal layer
14,15: polarization plates
2: display panels
21: pel array
22: driver element
23: public electrode
24: liquid crystal layer
25: transparency carrier
26: transparency carrier
B (j), B (j+1): storage electrode line
CL B1, CL B2: liquid crystal capacitance
CT B1, CT B2: storage capacitors
D: thickness
D B: first sub-pixel data
D G: second sub-pixel data
D R: the 3rd sub-pixel data
D (i): data line
L R1, L G1, L B1, L R2, L G2, L B2: curve
P 0: pixel
P B: first sub-pixel
P B1: first pixel electrode
P B2: second pixel electrode
P G: second sub-pixel
P R: the 3rd sub-pixel
T 0: transmissivity
T A3, T A4, T A6, T A7: transmissivity
T B3, T B4, T B6, T B7: transmissivity
T 1R (3.8V), T 1G (3.8V), T 1B (3.8V), T 2B (3.8V): transmissivity
T 1R (4.2V), T 1G (4.2V), T 1B (4.2V), T 2B (4.2V): transmissivity
S B1, S B2: switch module
S (i), S (i+1): sweep trace
V 0: voltage
V 10: the first an ancient woman's ornament agate voltage group
V 11: first voltage
V 20: the second an ancient woman's ornament agate voltage group
V 21: second voltage
V A1～V A7: voltage
V B1～V B7: voltage
Δ V ,-Δ V: bias voltage
Embodiment
Hereinafter with reference to display panels and the liquid crystal indicator of relevant drawings explanation according to the preferred embodiment of the present invention.
[display panels of first embodiment]
With reference to Fig. 3 and shown in Figure 4, (Vertical Alignment, VA) display panels is an example to the display panels 2 of first embodiment, and display panels 2 works in normal dark (normally black) pattern with the vertical orientation type simultaneously.Display panels 2 comprises pel array 21 and driver element 22, public electrode 23 and liquid crystal layer 24 at least, in the present embodiment, pel array 21 is arranged at respectively on the transparency carrier 25, and public electrode is arranged on another transparency carrier 26, and wherein liquid crystal layer 24 is between pel array 21 and public electrode 23.
Pel array 21 has a plurality of pixel P 0, and each pixel P 0Has at least one first sub-pixel P B, in the present embodiment, the first sub-pixel P BBe used for showing the blue example that is; Certainly, the first sub-pixel P BAlso can be used for showing red or green.In addition, the first sub-pixel P BAt least has the first pixel electrode P B1And the second pixel electrode P B2Wherein, the first pixel electrode P B1With the second pixel electrode P B2The position of area ratio, setting and shape etc. can design according to actual state.In the present embodiment, the first pixel electrode P B1And the second pixel electrode P B2With the equal areas ratio, the position is adjacent and shape all is that rectangle is an example.And, the first sub-pixel P BAlso can have the 3rd pixel electrode (not shown) according to actual demand.
Driver element 22 is according to the first sub-pixel data D BMake the first pixel electrode P B1And the potential difference (PD) that public electrode is 23 equals the first voltage V 11, the first voltage V 11Absolute value be the first an ancient woman's ornament agate voltage group V 10One of them, and driver element 22 is according to the first sub-pixel data D BMake the second pixel electrode P B2And the potential difference (PD) that public electrode is 23 equals the second voltage V 21, the second voltage V 21Absolute value be the second an ancient woman's ornament agate voltage group V 20One of them, wherein, the first an ancient woman's ornament agate voltage group V 10And the second an ancient woman's ornament agate voltage group V 20Can arrange in pairs or groups mutually and produce according to the resistance string of driver element 22 and extraneous input voltage.
Below for two example two, how to make the pixel electrode P that wins with explanation B1And 23 of public electrodes have the first voltage V 11Potential difference (PD), and the second pixel electrode P B2And 23 of public electrodes have the second voltage V 21Potential difference (PD).
Embodiment one:
With reference to shown in Fig. 4 and Fig. 5 A, display panels 2 also comprises a plurality of liquid crystal capacitance CL simultaneously B1, CL B2, a plurality of switch module S B1, S B2, at least one data line D (i) and multi-strip scanning line S (i), S (i+1).Wherein, liquid crystal capacitance CL B1By the public electrode 23 and the first pixel electrode P B1Definition forms, and liquid crystal capacitance CL B2By the public electrode 23 and the second pixel electrode P B2Definition forms.Switch module S B1, S B2First end respectively with liquid crystal capacitance CL B1, CL B2An end electrically connect switch module S B1, S B2Second end electrically connect switch module S respectively with sweep trace S (i), S (i+1) B1, S B2The 3rd end electrically connect with data line D (i) respectively.And data line D (i) and sweep trace S (i), S (i+1) electrically connect with the driver element (not shown) respectively.
With reference to shown in Fig. 3 and Fig. 5 A, driver element 22 can be according to the first sub-pixel data D simultaneously BFrom the first an ancient woman's ornament agate voltage group V 10In selected and the first sub-pixel data D BCorresponding driving voltage input data line D (i), and as switch module S B1During conducting (turn on), driving voltage is imported liquid crystal capacitance CL via data line D (i) B1, so that liquid crystal capacitance CL B1Has the first voltage V 11Voltage difference (the first pixel electrode P B1And 23 of public electrodes have the first voltage V 11Potential difference (PD)).In like manner, driver element 22 can be according to the first sub-pixel data D BFrom the second an ancient woman's ornament agate voltage group V 20In selected and the first sub-pixel data D BCorresponding another driving voltage input data line D (i), and as switch module S B2During conducting (turn on), another driving voltage is imported liquid crystal capacitance CL via data line D (i) B2, so that liquid crystal capacitance CL B2Has the second voltage V 21Voltage difference (the second pixel electrode P B2And 23 of public electrodes have the second voltage V 21Potential difference (PD)).
Embodiment two:
With reference to shown in Fig. 4 and Fig. 5 B, display panels 2 also comprises a plurality of liquid crystal capacitance CL simultaneously B1, CL B2, a plurality of switch module S B1, S B2, a plurality of storage capacitors CT B1, CT B2, at least one data line D (i), at least one sweep trace S (i), many storage electrode line B (j), B (j+1).Wherein, liquid crystal capacitance CL B1By the public electrode 23 and the first pixel electrode P B1Definition forms, and liquid crystal capacitance CL B2By the public electrode 23 and the second pixel electrode P B2Definition forms.Switch module S B1First end respectively with liquid crystal capacitance CL B1An end and storage capacitors CT B1An end electrically connect switch module S B2First end respectively with liquid crystal capacitance CL B2An end and storage capacitors CT B2An end electrically connect switch module S B1Second end and switch module S B2Second end electrically connect and switch module S B1, S B2Second end electrically connect switch module S respectively with sweep trace S (i) B1, S B2The 3rd end electrically connect with data line D (i) respectively.Storage electrode line B (j), B (j+1) respectively with storage capacitors CT B1, CT B2The other end electrically connect.And data line D (i), sweep trace S (i), storage electrode line B (j), B (j+1) electrically connect with the driver element (not shown) respectively.
With reference to shown in Fig. 3 and Fig. 5 B, driver element 22 can be according to the first sub-pixel data D simultaneously BFrom the first an ancient woman's ornament agate voltage group V 10In selected and the first sub-pixel data D BCorresponding predeterminated voltage V DAnd bias voltage+Δ V is with respectively input data line D (i) and storage electrode line B (j), and driver element 22 can be according to the first sub-pixel data D BFrom the second an ancient woman's ornament agate voltage group V 20In selected and the first sub-pixel data D BCorresponding predeterminated voltage V DAnd another bias voltage-Δ V is with respectively input data line D (i) and storage electrode line B (j+1), and as switch module S B1, S B2During conducting (turnon), predeterminated voltage V DThe input liquid crystal capacitance CL via data line D (i) B1, CL B2To produce identical initial pixel voltage.As switch module S B1, S B2When closing (turn off), two bias voltage+Δ V ,-Δ V is respectively via storage electrode line B (j), B (j+1) input storage capacitors CT B1, CT B2, so that liquid crystal capacitance CL B1, CL B2Initial pixel voltage be adjusted to the first voltage V respectively 11And the second voltage V 21In other words, at this moment, liquid crystal capacitance CL B1Has the first voltage V 11Voltage difference (the first pixel electrode P B1And 23 of public electrodes have the first voltage V 11Potential difference (PD)), and liquid crystal capacitance CL B2Has the second voltage V 21Voltage difference (the second pixel electrode P B2And 23 of public electrodes have the second voltage V 21Potential difference (PD)).More than two embodiment only for exemplifying, any can be so that the first pixel electrode P B1And 23 of public electrodes have the first voltage V 11Potential difference (PD), and the second pixel electrode P B2And 23 of public electrodes have the second voltage V 21The embodiment of potential difference (PD) all should belong to category of the present invention, do not repeat them here.
In addition, return the first an ancient woman's ornament agate voltage group V with reference to Fig. 3 and shown in Figure 4 10Can make the first pixel electrode P B1Pairing liquid crystal layer produces grayscale invert (gray levelinversion), the second an ancient woman's ornament agate voltage group V 20Can make the second pixel electrode P B2Pairing liquid crystal layer 24 does not produce grayscale invert.In other words, be applied in the first voltage V 11The zone of liquid crystal layer 24 can produce grayscale invert, and be applied in the second voltage V 21The zone of liquid crystal layer 24 can not produce grayscale invert.
Because present embodiment is with vertical alignment-type liquid crystal display panel, and to work in normal dark pattern be example, and therefore, light is to the transmissivity T of liquid crystal layer 24 0With the liquid crystal layer 24 voltage V that bears 0Between relation as shown in Figure 6.
With reference to shown in Figure 6, when the transmissivity of liquid crystal layer was maximal value, the voltage that liquid crystal layer bears was V A1It should be noted that, if the voltage that liquid crystal layer bore is less than V A1, then therefore grayscale invert, can not take place along with the transmissivity of liquid crystal layer increases and increases in the voltage that liquid crystal layer bore.If the voltage that liquid crystal layer bore is greater than V A1, then the voltage that liquid crystal layer bore is along with the transmissivity of liquid crystal layer increases and reduces, and therefore, grayscale invert can take place in liquid crystal layer.
In sum, produce grayscale invert in order to make the pairing liquid crystal layer of first pixel electrode, the first an ancient woman's ornament agate voltage group can be designed between V A2With V A3Between a plurality of magnitudes of voltage, for example, the first an ancient woman's ornament agate voltage group can have maximum value voltage V A3, valley voltage V A2And between maximum value voltage V A3With valley voltage V A2Between another voltage V A4, maximum value voltage V A3Be defined as the voltage that has maximum voltage value in the first an ancient woman's ornament agate voltage group, valley voltage V A2Be defined as the voltage that has the minimum voltage value in the first an ancient woman's ornament agate voltage group.Maximum value voltage V A3Magnitude of voltage greater than another voltage V A4Magnitude of voltage, and valley voltage V A2Magnitude of voltage less than another voltage V A4Magnitude of voltage.Wherein, as maximum value voltage V A3The transmissivity T of the pairing liquid crystal layer of first pixel electrode when putting on the pairing liquid crystal layer of first pixel electrode A3Less than working as another voltage V A4The transmissivity T of the pairing liquid crystal layer of first pixel electrode when putting on the pairing liquid crystal layer of first pixel electrode A4
In like manner, do not produce grayscale invert in order to make the pairing liquid crystal layer of second pixel electrode, the second an ancient woman's ornament agate voltage group can be designed between V A5With V A6Between a plurality of magnitudes of voltage, for example, the second an ancient woman's ornament agate voltage group can have maximum value voltage V A6, valley voltage V A5And between maximum value voltage V A6And valley voltage V A5Between another voltage V A7, maximum value voltage V A6Be defined as the voltage that has maximum voltage value in the first an ancient woman's ornament agate voltage group, valley voltage V A5Be defined as the voltage that has the minimum voltage value in the first an ancient woman's ornament agate voltage group.Maximum value voltage V A6Magnitude of voltage greater than another voltage V A7Magnitude of voltage, and valley voltage V A5Magnitude of voltage less than another voltage V A7Magnitude of voltage.Wherein, as maximum value voltage V A6The transmissivity T of the pairing liquid crystal layer of first pixel electrode when putting on the pairing liquid crystal layer of first pixel electrode A6Greater than working as another voltage V A7The transmissivity T of the pairing liquid crystal layer of first pixel electrode when putting on the pairing liquid crystal layer of first pixel electrode A7
With reference to Fig. 4 and shown in Figure 6, the nd of liquid crystal layer 24 can design according to actual demand simultaneously, and wherein, n is the extraordinary refractive index of liquid crystal layer 24 and the difference between the ordinary refractive index, and d is the thickness of liquid crystal layer 24.It is example between 320nm～335nm that present embodiment causes the nd of liquid crystal layer 24 with processing procedure difference.In addition, in order to tackle above-mentioned processing procedure difference, the maximum value voltage V of the first an ancient woman's ornament agate voltage group A3Can be designed to 4.2V; The maximum value voltage V of the second an ancient woman's ornament agate voltage group A6Can be designed to 3.8V.
In sum, when display panels 2 made the nd of liquid crystal layer 24 be 320nm because of processing procedure difference, blue light was to the first sub-pixel P BThe maximum transmission rate of pairing liquid crystal layer obtains (T via the calculating of Fig. 2 1B (3.8V)+ T 1B (4.2V))/2 are about 0.411, and when display panels 2 made the nd of liquid crystal layer 24 be 335nm because of processing procedure difference, blue light was to the first sub-pixel P BThe maximum transmission rate of pairing liquid crystal layer obtains (T via the calculating of Fig. 2 2B (3.8V)+ T 2B (4.2V))/2 also are about 0.411, and in other words, display panels 2 of the present invention can be avoided causing the first sub-pixel P because of processing procedure difference BDifferent and the problem of generation grayscale invert of the value that the nd of pairing liquid crystal layer and original designing institute are estimated, in addition, because in the display panels 2 of the present invention, when display panels 2 made the nd of liquid crystal layer 24 be 320nm because of processing procedure difference, blue light was to the first sub-pixel P BThe maximum transmission rate of pairing liquid crystal layer is about 0.411, and it is greater than the transmissivity T of blue light in the existing display panels to liquid crystal layer 13 (maximum voltage that bears is 3.8V) 1B (3.8V)(being about 0.408) is so display panels of the present invention 2 can effectively utilize blue light to the first sub-pixel P BThe transmissivity of pairing liquid crystal layer.
In addition, with reference to shown in Figure 3, each pixel P 0Can also comprise the second sub-pixel P GAnd the 3rd sub-pixel P RWherein, the second sub-pixel P GAnd the 3rd sub-pixel P RBe used to show the color different with first sub-pixel, in the present embodiment, the second sub-pixel P GBe used for showing green, and the 3rd sub-pixel P RBe used for showing the red example that is.Driver element 22 is according to the second sub-pixel data D GControl the second sub-pixel P GDemonstration, make the second sub-pixel P GPairing liquid crystal layer does not produce grayscale invert, and driver element 22 is according to the 3rd sub-pixel data D RControl the 3rd sub-pixel P RDemonstration, make the 3rd sub-pixel P RPairing liquid crystal layer does not produce grayscale invert.
Below lift two embodiments to illustrate that how driver element 22 is according to the second sub-pixel data D GControl the second sub-pixel P GDemonstration, make the second sub-pixel P GPairing liquid crystal layer does not produce grayscale invert, and how driver element 22 is according to the 3rd sub-pixel data D RControl the 3rd sub-pixel P RDemonstration, make the 3rd sub-pixel P RPairing liquid crystal layer does not produce grayscale invert.
Embodiment one:
With reference to shown in Figure 3, driver element 22 can be according to the second sub-pixel data D G, and make the first an ancient woman's ornament agate voltage group V 10And the second an ancient woman's ornament agate voltage group V 20Control the second sub-pixel P GDemonstration.Specifically, the second sub-pixel P GCan have the 3rd pixel electrode and the 4th pixel electrode (not shown), driver element 22 is according to the second sub-pixel data D GMake the potential difference (PD) between the 3rd pixel electrode and public electrode equal tertiary voltage, the absolute value of tertiary voltage is the first an ancient woman's ornament agate voltage group V 10One of them, and driver element 22 is according to the second sub-pixel data D GMake the potential difference (PD) between the 4th pixel electrode and public electrode equal the 4th voltage, the absolute value of the 4th voltage is the second an ancient woman's ornament agate voltage group V 20One of them, and the concrete mode of implementing is as to the first sub-pixel P BControl, and be specified in leading portion literal and Fig. 4, Fig. 5 A and Fig. 5 B, do not repeat them here.
In sum, when display panels 2 made the nd of liquid crystal layer be 320nm because of processing procedure difference, green glow was to the second sub-pixel P GThe maximum transmission rate of pairing liquid crystal layer obtains (T via the calculating of Fig. 2 1G (3.8V)+ T 1G (4.2V))/2 are about 0.384, and it is greater than the transmissivity T of green glow in the existing display panels to liquid crystal layer 13 (maximum voltage that bears is 3.8V) 1G (3.8V)(about 0.368) is so display panels of the present invention 2 can effectively utilize green glow to the second sub-pixel P GThe transmissivity of pairing liquid crystal layer.
In addition, driver element 22 can be according to the 3rd sub-pixel data D RAnd make the first an ancient woman's ornament agate voltage group V 10And the second an ancient woman's ornament agate voltage group V 20Control the 3rd sub-pixel P RDemonstration.Specifically, the 3rd sub-pixel P RCan have the 5th pixel electrode and the 6th pixel electrode (not shown), driver element 22 is according to the 3rd sub-pixel data D RMake the potential difference (PD) between the 5th pixel electrode and public electrode equal the 5th voltage, the absolute value of the 5th voltage is the first an ancient woman's ornament agate voltage group V 10One of them, and driver element 22 is according to the 3rd sub-pixel data D GMake the potential difference (PD) between the 6th pixel electrode and public electrode equal the 6th voltage, the absolute value of the 6th voltage is the second an ancient woman's ornament agate voltage group V 20One of them, and the concrete mode of implementing is as to the first sub-pixel P BControl, and be specified in leading portion literal and Fig. 4, Fig. 5 A and Fig. 5 B, do not repeat them here.
In sum, when display panels 2 made the nd of liquid crystal layer be 320nm because of processing procedure difference, ruddiness was to the 3rd sub-pixel P RThe maximum transmission rate of pairing liquid crystal layer obtains (T via the calculating of Fig. 2 1R (3.8V)+ T 1R (4.2V))/2 are about 0.3284, and it is greater than the maximum transmission rate T of ruddiness in the existing display panels to liquid crystal layer 13 (maximum voltage that bears is 3.8V) 1R (3.8V)(being about 0.309) is so display panels of the present invention 2 can effectively utilize green glow to the 3rd sub-pixel P RThe transmissivity of pairing liquid crystal layer.
Embodiment two:
Driver element 22 also can comprise the 3rd an ancient woman's ornament agate voltage group, the 4th an ancient woman's ornament agate voltage group, the 5th an ancient woman's ornament agate voltage group, the 6th an ancient woman's ornament agate voltage group (not shown), and wherein driver element 22 can be according to the second sub-pixel data D GAnd make the 3rd an ancient woman's ornament agate voltage group and the 4th an ancient woman's ornament agate voltage group control the second sub-pixel P GDemonstration, and driver element 22 can be according to the 3rd sub-pixel data D RAnd make the 5th an ancient woman's ornament agate voltage group and the 6th an ancient woman's ornament agate voltage group control the 3rd sub-pixel P RDemonstration, and the concrete mode of implementing is as to the first sub-pixel P BControl, and be specified in leading portion literal and Fig. 4, Fig. 5 A and Fig. 5 B, do not repeat them here.In addition, the 3rd an ancient woman's ornament agate voltage group and the 4th an ancient woman's ornament agate voltage group can be born the relation between the voltage to the transmissivity of liquid crystal layer and liquid crystal layer and design according to green glow, and the 5th an ancient woman's ornament agate voltage group and the 6th an ancient woman's ornament agate voltage group can be born the relation between the voltage to the transmissivity of liquid crystal layer and liquid crystal layer and design according to ruddiness.Certainly, the 3rd an ancient woman's ornament agate voltage group, the 4th an ancient woman's ornament agate voltage group, the 5th an ancient woman's ornament agate voltage group and the 6th an ancient woman's ornament agate voltage group can design according to actual demand.
[display panels of second embodiment]
Different with the display panels of first embodiment is that (Twisted Nematic, TN) display panels is an example to the display panels 2 of second embodiment, and display panels 2 works in Chang Liang (normally white) pattern with stable twisted nematic.
Because present embodiment is with the twisted nematic liquid crystals display panel, and to work in normal bright pattern be example, and therefore, light is to the transmissivity T of liquid crystal layer 0Bear voltage V with liquid crystal layer 0Between relation as shown in Figure 7.
With reference to shown in Figure 7, when the transmissivity of liquid crystal layer was maximal value, the voltage that liquid crystal layer bears was V B1It should be noted that, if the voltage that liquid crystal layer bore is greater than V B1, then therefore grayscale invert, can not take place along with the transmissivity of liquid crystal layer increases and reduces in the voltage that liquid crystal layer bore.If the voltage that liquid crystal layer bore is less than V B1, then the voltage that liquid crystal layer bore is along with the transmissivity of liquid crystal layer increases and increases, and therefore, grayscale invert can take place in liquid crystal layer.
In sum, produce grayscale invert in order to make the pairing liquid crystal layer of first pixel electrode, the first an ancient woman's ornament agate voltage group can be designed between V B2With V B3Between a plurality of magnitudes of voltage, for example, the first an ancient woman's ornament agate voltage group can have maximum value voltage V B3, valley voltage V B2And between maximum value voltage V B3And valley voltage V B2Between another voltage V B4, maximum value voltage V B3Be defined as the voltage that has maximum voltage value in the first an ancient woman's ornament agate voltage group, valley voltage V B2Be defined as the voltage that has the minimum voltage value in the first an ancient woman's ornament agate voltage group.Maximum value voltage V B3Magnitude of voltage greater than another voltage V B4Magnitude of voltage, and valley voltage V B2Magnitude of voltage less than another voltage V B4Magnitude of voltage.Wherein, as maximum value voltage V B3The transmissivity T of the pairing liquid crystal layer of first pixel electrode when putting on the pairing liquid crystal layer of first pixel electrode B3Greater than working as another voltage V B4The transmissivity T of the pairing liquid crystal layer of first pixel electrode when putting on the pairing liquid crystal layer of first pixel electrode B4
In like manner, do not produce grayscale invert in order to make the pairing liquid crystal layer of second pixel electrode, the second an ancient woman's ornament agate voltage group can be designed between V B5With V B6Between a plurality of magnitudes of voltage, for example, the second an ancient woman's ornament agate voltage group can have maximum value voltage V B6, valley voltage V B5And between maximum value voltage V B6And valley voltage V B5Between another voltage V B7, maximum value voltage V B6Be defined as the voltage that has maximum voltage value in the first an ancient woman's ornament agate voltage group, valley voltage V B5Be defined as the voltage that has the minimum voltage value in the first an ancient woman's ornament agate voltage group.Maximum value voltage V B6Magnitude of voltage greater than another voltage V B7Magnitude of voltage, and valley voltage V B5Magnitude of voltage less than another voltage V B7Magnitude of voltage.Wherein, as maximum value voltage V B6The transmissivity T of the pairing liquid crystal layer of first pixel electrode when putting on the pairing liquid crystal layer of first pixel electrode B6Less than working as another voltage V B7The transmissivity T of the pairing liquid crystal layer of first pixel electrode when putting on the pairing liquid crystal layer of first pixel electrode B7
In sum, by above-mentioned design, the different problems that produce grayscale invert of value that the nd that also can avoid causing the pairing liquid crystal layer of first sub-pixel because of processing procedure difference and original designing institute are estimated.
[driving method of the display panels of preferred embodiment]
The driving method of the display panels of the preferred embodiment of the present invention, wherein display panels comprises liquid crystal layer, public electrode and first sub-pixel, first sub-pixel has first pixel electrode and second pixel electrode, driving method may further comprise the steps: make the potential difference (PD) between first pixel electrode and public electrode equal first voltage according to first sub-pixel data, the absolute value of first voltage be the first an ancient woman's ornament agate voltage group one of them; And make the potential difference (PD) between second pixel electrode and public electrode equal second voltage according to first sub-pixel data, the absolute value of second voltage be the second an ancient woman's ornament agate voltage group one of them, wherein, the first an ancient woman's ornament agate voltage group makes the pairing liquid crystal layer of first pixel electrode produce grayscale invert, and the second an ancient woman's ornament agate voltage group makes the pairing liquid crystal layer of second pixel electrode not produce grayscale invert.
The driving method of the display panels of present embodiment describes in detail in the display panels 2 of first embodiment of the invention, does not repeat them here.
[liquid crystal indicator of preferred embodiment]
The liquid crystal indicator of the preferred embodiment of the present invention comprises backlight module and display panels.Display panels is relative with backlight module and establish, and display panels has liquid crystal layer, public electrode, first sub-pixel and driver element.First sub-pixel has first pixel electrode and second pixel electrode.Driver element makes the potential difference (PD) between first pixel electrode and public electrode equal first voltage according to first sub-pixel data, the absolute value of first voltage be the first an ancient woman's ornament agate voltage group one of them, and driver element makes the potential difference (PD) between second pixel electrode and public electrode equal second voltage according to first sub-pixel data, the absolute value of second voltage be the second an ancient woman's ornament agate voltage group one of them.The first an ancient woman's ornament agate voltage group makes the pairing liquid crystal layer of first pixel electrode produce grayscale invert, and the second an ancient woman's ornament agate voltage group makes the pairing liquid crystal layer of second pixel electrode not produce grayscale invert.
The driving method of the display panels of present embodiment describes in detail in the display panels 2 of first embodiment of the invention, does not repeat them here.
In sum, driving method and liquid crystal indicator according to display panels of the present invention, display panels make the pairing liquid crystal layer of first pixel electrode produce grayscale invert according to the first an ancient woman's ornament agate voltage group, the second an ancient woman's ornament agate voltage group makes the pairing liquid crystal layer of second pixel electrode not produce grayscale invert, therefore, the different problems that produce grayscale invert of value estimated of the display panels of the present invention nd that can avoid causing the pairing liquid crystal layer of first sub-pixel and original designing institute because of processing procedure difference.In addition in the present invention, light can be greater than light in the existing display panels to the transmissivity of liquid crystal layer to the maximum transmission rate of the pairing liquid crystal layer of first sub-pixel, effectively utilizing the transmissivity of light, and then the contrast of the shown picture of display panels is improved to the pairing liquid crystal layer of first sub-pixel.
The above is only for exemplary and non-limiting.Anyly do not break away from spirit of the present invention and category and, all should be included within the scope that appending claims asks for protection its equivalent modifications of carrying out or change.

Claims (22)

1. display panels comprises:
Liquid crystal layer;
Public electrode;
First sub-pixel, described first sub-pixel has first pixel electrode and second pixel electrode; And
Driver element, described driver element makes the potential difference (PD) between described first pixel electrode and described public electrode equal first voltage according to first sub-pixel data, the absolute value of described first voltage be the first an ancient woman's ornament agate voltage group one of them, and described driver element makes the potential difference (PD) between described second pixel electrode and described public electrode equal second voltage according to described first sub-pixel data, the absolute value of described second voltage be the second an ancient woman's ornament agate voltage group one of them
Wherein, the described first an ancient woman's ornament agate voltage group makes the pairing described liquid crystal layer of described first pixel electrode produce grayscale invert, and the described second an ancient woman's ornament agate voltage group makes the pairing described liquid crystal layer of described second pixel electrode not produce grayscale invert.
2. display panels according to claim 1, it works in normal dark pattern, and the described first an ancient woman's ornament agate voltage group has maximum value voltage and another voltage at least, described maximum value voltage is defined as the voltage that has maximum voltage value in the described first an ancient woman's ornament agate voltage group, and the magnitude of voltage of described maximum value voltage is greater than the magnitude of voltage of described another voltage, wherein when described maximum value voltage puts on the pairing described liquid crystal layer of described first pixel electrode, the transmissivity of the transmissivity of the pairing described liquid crystal layer of described first pixel electrode pairing described liquid crystal layer of described first pixel electrode when putting on the pairing described liquid crystal layer of described first pixel electrode when described another voltage.
3. display panels according to claim 2, wherein said display panels are vertical alignment-type liquid crystal display panel.
4. display panels according to claim 1, it works in normal bright pattern, and the described first an ancient woman's ornament agate voltage group has maximum value voltage and another voltage at least, described maximum value voltage is defined as the voltage that has maximum voltage value in the described first an ancient woman's ornament agate voltage group, and the magnitude of voltage of described maximum value voltage is greater than the magnitude of voltage of described another voltage, wherein the transmissivity of the transmissivity of the pairing described liquid crystal layer of described first pixel electrode pairing described liquid crystal layer of described first pixel electrode when putting on the pairing described liquid crystal layer of described first pixel electrode when described another voltage when described maximum value voltage puts on the pairing described liquid crystal layer of described first pixel electrode.
5. display panels according to claim 4, wherein said display panels are torsion nematic liquid crystal display panel.
6. display panels according to claim 1 also comprises:
Second sub-pixel, described second sub-pixel is used to show and the different color of described first sub-pixel, wherein said driver element is controlled the demonstration of described second sub-pixel according to second sub-pixel data, makes the pairing described liquid crystal layer of described second sub-pixel not produce grayscale invert.
7. display panels according to claim 1 also comprises:
Second sub-pixel, described second sub-pixel is used to show and the different color of described first sub-pixel that wherein said driver element makes described first an ancient woman's ornament agate voltage group and the described second an ancient woman's ornament agate voltage group control the demonstration of described second sub-pixel according to second sub-pixel data.
8. display panels according to claim 7, wherein said second sub-pixel has the 3rd pixel electrode and the 4th pixel electrode, described driver element makes the potential difference (PD) between described the 3rd pixel electrode and described public electrode equal tertiary voltage according to described second sub-pixel data, the absolute value of described tertiary voltage be the described first an ancient woman's ornament agate voltage group one of them, and described driver element makes the potential difference (PD) between described the 4th pixel electrode and described public electrode equal the 4th voltage according to described second sub-pixel data, the absolute value of described the 4th voltage be the described second an ancient woman's ornament agate voltage group one of them.
9. display panels according to claim 1 also comprises:
Second sub-pixel, described second sub-pixel are used to show and the different color of described first sub-pixel that wherein said driver element makes the 3rd an ancient woman's ornament agate voltage group and the 4th an ancient woman's ornament agate voltage group control the demonstration of described second sub-pixel according to second sub-pixel data.
10. display panels according to claim 9, wherein said second sub-pixel has the 3rd pixel electrode and the 4th pixel electrode, described driver element makes the potential difference (PD) between described the 3rd pixel electrode and described public electrode equal tertiary voltage according to described second sub-pixel data, the absolute value of described tertiary voltage be described the 3rd an ancient woman's ornament agate voltage group one of them, and described driver element makes the potential difference (PD) between described the 4th pixel electrode and described public electrode equal the 4th voltage according to described second sub-pixel data, the absolute value of described the 4th voltage be described the 4th an ancient woman's ornament agate voltage group one of them.
11. display panels according to claim 10, wherein said the 3rd an ancient woman's ornament agate voltage group makes the pairing described liquid crystal layer of described the 3rd pixel electrode produce grayscale invert, and described the 4th an ancient woman's ornament agate voltage group makes the pairing described liquid crystal layer of described the 4th pixel electrode not produce grayscale invert.
12. the driving method of a display panels, wherein said display panels comprise liquid crystal layer, public electrode and first sub-pixel, described first sub-pixel has first pixel electrode and second pixel electrode, and described driving method may further comprise the steps:
Make the potential difference (PD) between described first pixel electrode and described public electrode equal first voltage according to first sub-pixel data, the absolute value of described first voltage be the first an ancient woman's ornament agate voltage group one of them; And
Make the potential difference (PD) between described second pixel electrode and described public electrode equal second voltage according to described first sub-pixel data, the absolute value of described second voltage be the second an ancient woman's ornament agate voltage group one of them,
Wherein, the described first an ancient woman's ornament agate voltage group makes the pairing described liquid crystal layer of described first pixel electrode produce grayscale invert, and the described second an ancient woman's ornament agate voltage group makes the pairing described liquid crystal layer of described second pixel electrode not produce grayscale invert.
13. the driving method of display panels according to claim 12, wherein display panels works in normal dark pattern, and the described first an ancient woman's ornament agate voltage group has maximum value voltage and another voltage at least, described maximum value voltage is defined as the voltage that has maximum voltage value in the described first an ancient woman's ornament agate voltage group, and the magnitude of voltage of described maximum value voltage is greater than the magnitude of voltage of described another voltage, wherein the transmissivity of the transmissivity of the pairing described liquid crystal layer of described first pixel electrode pairing described liquid crystal layer of described first pixel electrode when putting on the pairing described liquid crystal layer of described first pixel electrode when described another voltage when described maximum value voltage puts on the pairing described liquid crystal layer of described first pixel electrode.
14. the driving method of display panels according to claim 13, wherein said display panels are vertical alignment-type liquid crystal display panel.
15. the driving method of display panels according to claim 12, wherein display panels works in normal bright pattern, and the described first an ancient woman's ornament agate voltage group has maximum value voltage and another voltage at least, described maximum value voltage is defined as the voltage that has maximum voltage value in the described first an ancient woman's ornament agate voltage group, and the magnitude of voltage of described maximum value voltage is greater than the magnitude of voltage of described another voltage, wherein the transmissivity of the transmissivity of the pairing described liquid crystal layer of described first pixel electrode pairing described liquid crystal layer of described first pixel electrode when putting on the pairing described liquid crystal layer of described first pixel electrode when described another voltage when described maximum value voltage puts on the pairing described liquid crystal layer of described first pixel electrode.
16. the driving method of display panels according to claim 15, wherein said display panels are torsion nematic liquid crystal display panel.
17. the driving method of display panels according to claim 12, wherein said display panels also comprises second sub-pixel, and described second sub-pixel is used to show and the different color of described first sub-pixel that described driving method also comprises:
Control the demonstration of described second sub-pixel according to second sub-pixel data, make the pairing described liquid crystal layer of described second sub-pixel not produce grayscale invert.
18. the driving method of display panels according to claim 12, wherein said display panels also comprises second sub-pixel, and described second sub-pixel is used to show and the different color of described first sub-pixel that described driving method also comprises:
Make described first an ancient woman's ornament agate voltage group and the described second an ancient woman's ornament agate voltage group control the demonstration of described second sub-pixel according to second sub-pixel data.
19. the driving method of display panels according to claim 18, wherein said second sub-pixel has the 3rd pixel electrode and the 4th pixel electrode, and the step that makes described first an ancient woman's ornament agate voltage group and the described second an ancient woman's ornament agate voltage group control the demonstration of described second sub-pixel according to described second sub-pixel data comprises:
Make the potential difference (PD) between described the 3rd pixel electrode and described public electrode equal tertiary voltage according to described second sub-pixel data, the absolute value of described tertiary voltage be the described first an ancient woman's ornament agate voltage group one of them, and
Make the potential difference (PD) between described the 4th pixel electrode and described public electrode equal the 4th voltage according to described second sub-pixel data, the absolute value of described the 4th voltage be the described second an ancient woman's ornament agate voltage group one of them.
20. the driving method of display panels according to claim 12, wherein said display panels also comprises second sub-pixel, and described second sub-pixel is used to show and the different color of described first sub-pixel that described driving method also comprises:
Make the 3rd an ancient woman's ornament agate voltage group and the 4th an ancient woman's ornament agate voltage group control the demonstration of described second sub-pixel according to second sub-pixel data.
21. the driving method of display panels according to claim 20, wherein said second sub-pixel has the 3rd pixel electrode and the 4th pixel electrode, and the step that makes described the 3rd an ancient woman's ornament agate voltage group and described the 4th an ancient woman's ornament agate voltage group control the demonstration of described second sub-pixel according to described second sub-pixel data comprises:
Make the potential difference (PD) between described the 3rd pixel electrode and described public electrode equal tertiary voltage according to described second sub-pixel data, the absolute value of described tertiary voltage be described the 3rd an ancient woman's ornament agate voltage group one of them, and
Make the potential difference (PD) between described the 4th pixel electrode and described public electrode equal the 4th voltage according to described second sub-pixel data, the absolute value of described the 4th voltage be described the 4th an ancient woman's ornament agate voltage group one of them.
22. the driving method of display panels according to claim 21, wherein said the 3rd an ancient woman's ornament agate voltage group makes the pairing described liquid crystal layer of described the 3rd pixel electrode produce grayscale invert, and described the 4th an ancient woman's ornament agate voltage group makes the pairing described liquid crystal layer of described the 4th pixel electrode not produce grayscale invert.
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