CN101281310A - Crystal display device and driving method thereof - Google Patents
Crystal display device and driving method thereof Download PDFInfo
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- CN101281310A CN101281310A CNA2007100921073A CN200710092107A CN101281310A CN 101281310 A CN101281310 A CN 101281310A CN A2007100921073 A CNA2007100921073 A CN A2007100921073A CN 200710092107 A CN200710092107 A CN 200710092107A CN 101281310 A CN101281310 A CN 101281310A
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Abstract
A liquid crystal display device includes a plurality of pixels arranged in a matrix mode. Each pixel contains at least a first sub-pixel and a second sub-pixel, each of the first or the second sub-pixel includes a liquid crystal capacitor and a storage capacitor, and the liquid crystal capacitance and the storage capacitance ratio of the first sub-pixel is less than that of the second sub-pixel, wherein, in a first pixel and a second pixel of all the pixels, the first sub-pixel of the first pixel is in dislocation setting with the first sub-pixel of the second pixel, and the second sub-pixels pixel of the first pixel is in dislocation setting with the second sub-pixel of the second pixel.
Description
Technical field
The present invention relates to a kind of liquid crystal indicator, the pixel that particularly is involved in a kind of liquid crystal indicator is distinguished the driving method of mode and liquid crystal indicator.
Background technology
Liquid crystal indicator is one of a kind of at present common flat-panel screens, it has high resolving power, in light weight, thin thickness, and advantage such as low power consumption, therefore, the use of liquid crystal indicator is more and more general at present, except that can be used as general calculator display organization use, also can be used as the Touch Screen that man-machine interface is used, and also can combine with video-signal system and use as TV.
Yet,, exist the problem that some technical need further solve also, for example the problem of wide viewing angle though liquid crystal indicator is more and more universal.From the above, the visual angle of liquid crystal indicator is relevant with its γ characteristic, is meant the gray scale of image and the relation of brightness in this γ characteristic, and Fig. 1 shows the performance diagram of the gray scale of an existing multi-domain vertical alignment-type liquid crystal display panel to light transmittance.Please refer to Fig. 1, curve L1 viewed light transmittance when on behalf of the front, curve L3 watch multi-domain vertical alignment-type liquid crystal display panel.Wherein, curve L1 is the ruddiness penetrance, and curve L2 is the green glow penetrance, and curve L3 is the blue light penetrance.Yet, when with the angle (oblique just 60 degree) that tilts when watching multi-domain vertical alignment-type liquid crystal display panel, under same operating voltage, observed light transmittance can change and be curve L4, curve L5 and curve L6 from curve L1, curve L2 and curve L3 are drifted about respectively.
Please continue with reference to Fig. 1, as can see from Figure 1, in the zone of higher gray scale with low gray scale, the light transmittance of the light transmittance of curve L1 and curve L4 is close, the light transmittance of the light transmittance of curve L2 and curve L5 is close, and the light transmittance of the light transmittance of curve L3 and curve L6 is close.Yet in the middle gray zone, the light transmittance of curve L1, curve L2 and curve L3 differs greatly with corresponding curve L4, curve L5 and the light transmittance of curve L6 respectively.That is to say that higher gray scale is slighter with the color shift phenomenon of low gray scale, the color shift phenomenon of middle gray is more serious.
As shown in Figure 2, the image that its dead ahead that is presented at screen and oblique the place ahead are seen is at normalizing light (normalized luminance) graph of a relation of same grayscale, and wherein dotted line is that ideal value, solid line are actual value; In detail, under ideal state, the γ characteristic of the image of seeing in the dead ahead of screen and oblique the place ahead is identical, therefore shown in the dotted line of Fig. 1, it is 1 straight line that its normalizing light relation is a slope, yet, in fact, liquid crystal indicator has the wide inadequately problem in visual angle, so when the user watches image in the dead ahead of screen with oblique the place ahead, the γ characteristic of the image that it is seen is also inequality, that is the normalizing light of the image seen in the dead ahead of screen and oblique the place ahead of user and inequality, the normalizing light of the image that the normalizing light of the image of usually seeing in the dead ahead can be seen greater than oblique the place ahead, therefore, the picture of many kens LCD screen of watching in different angles, its luminance difference causes the difference as a result of each blend of colors, its color that manifests still has a little difference, and then causes the phenomenon of colour cast.
For addressing the above problem, a kind of design is arranged in the prior art, it utilizes the conclusion of learning from Fig. 1, and promptly higher gray scale is slighter with the color shift phenomenon of the coloured light of low gray scale, further changes the circuit layout design to improve the phenomenon of colour cast.This prior art is that a pixel cell is divided into two different zones of light transmittance.The light transmittance in one zone is higher, shows the color of higher gray scale; Another regional light transmittance is lower, shows the color of low gray scale.Specifically, become the color of gray scale in,, all can watch close color no matter then the user faces or watches multi-domain vertical alignment-type liquid crystal display panel after the improvement with the angle that tilts with the color mixture of the color of higher gray scale and low gray scale.
Please refer to Fig. 3, it shows existing many kens liquid crystal indicator 1, and it comprises liquid crystal panel 100, source electrode driver 102 and gate drivers 104.Wherein, liquid crystal panel 100 comprises n*m pixel 10, source electrode driver 102 is sent to a plurality of pixels 10 by data line D (1)～D (n) with video data, gate drivers 104 is sent to liquid crystal panel 100 by sweep trace S (1)～S (m) with sweep signal and opens each row pixel 10 with sequence, and respectively first bias voltage signal and second bias voltage signal is sent to each pixel 10 on the liquid crystal panel 100 by the first capacitor storage beam B1 (1)～B1 (m) and the second capacitor storage beam B2 (1)～B2 (m).As Fig. 4 and shown in Figure 5, existing technology proposes the pixel region separation structure of liquid crystal indicator 1, it has a plurality of pixels 10 of arranging with matrix-style, and each pixel 10 comprises one first sub-pixel 11 and one second sub-pixel 12, and each first sub-pixel 11 comprises a liquid crystal capacitance C
LC1, a storage capacitors C
ST1An and switch module M
1, each second sub-pixel 12 comprises a liquid crystal capacitance C
LC2, a storage capacitors C
ST2An and switch module M
2In addition, liquid crystal indicator 1 also comprises multi-strip scanning line S (1)～S (m), many data line D (1)～D (n) and many capacitor storage beam 15, wherein capacitor storage beam 15 comprises many first capacitor storage beam B1 (1)～B1 (m) and the second capacitor storage beam B2 (1)～B2 (m), sweep trace S (1)～S (m) and capacitor storage beam 15 parallel mutual settings, and data line D (1)～D (n) and sweep trace S (1)～vertical setting of S (m).As shown in Figure 4, be example with a certain pixel 10, i bar sweep trace S (i) is arranged between first sub-pixel 11 and second sub-pixel 12 and is connected to switch module M
1And switch module M
2Grid, j bar data line D (j) is by switch module M
1Be connected to liquid crystal capacitance C
LC1And storage capacitors C
ST1, and by switch module M
2Be connected to liquid crystal capacitance C
LC2And storage capacitors C
ST2, in addition, storage capacitors C
ST1And storage capacitors C
ST2Be connected to i bar first capacitor storage beam B1 (i) and the i bar second capacitor storage beam B2 (i) respectively, wherein, i bar second capacitor storage beam B2 (i) and the i+1 bar first capacitor storage beam B1 (i+1) share same entity circuit layout.
As shown in Figure 5, it shows the circuit layout synoptic diagram of several pixels 10, and wherein regional A represents the viewing area of first sub-pixel 11, and area B is represented the viewing area of second sub-pixel 12, and regional A and area B are provided with alternately along scan-line direction; Is example at this with a polarity switching mode of counter-rotating (dot inversion), and in the just same pixel, its polarity in the pixel voltage of adjacent image time is different, and the polarity of the pixel voltage of neighbor also is different.When a pixel 10 activated, its time sequential routine as shown in Figure 6, with regional A is example, in the first image time f1, behind i bar sweep trace S (i) output scanning signal, the i bar first capacitor storage beam B1 (i) can change low voltage level into, and therefore, the pixel voltage of regional A (is liquid crystal capacitance C
LC1Capacitance) the storage capacitors C that can be subjected to
ST1Influence, slightly reduce to " X-Δ V " by originally " X ".In the second image time f2, behind one scan signal under i bar sweep trace S (i) output, the i bar first capacitor storage beam B1 (i) can transform back into high-voltage level again, and at this moment, the pixel voltage of regional A (is liquid crystal capacitance C
LC1Capacitance) the storage capacitors C that can be subjected to
ST1Influence, slightly be upgraded to " X+ Δ V " by originally " X ".In addition, be example with the area B, in the first image time f1, at i bar sweep trace S (i) output scanning signal and through after half sequential, the i bar second capacitor storage beam B2 (i) can change high-voltage level into, and therefore, the pixel voltage of area B (is liquid crystal capacitance C
LC2Capacitance) the storage capacitors C that can be subjected to
ST2Influence, slightly be upgraded to " X+ Δ V " by originally " X ".In the second image time f2, export next pulse signal and through after half sequential, the i bar second capacitor storage beam B2 (i) can transform back into low voltage level again at i bar sweep trace S (i), at this moment, the pixel voltage of area B (is liquid crystal capacitance C
LC2Capacitance) the storage capacitors C that can be subjected to
ST2Influence, slightly reduce to " X-Δ V " by originally " X ".
As mentioned above, prior art is distinguished into two sub-pixels again with same pixel, and utilizes the mode of the pixel voltage of control two sub-pixels, uses the γ characteristic of improving liquid crystal indicator 1, as shown in Figure 7.Yet, as shown in Figure 5, this kind mode can make the pixel voltage difference of the sub-pixel 11 of winning be " X-Δ V " (at first image time f1) or " X+ Δ V " (at second image time f2), for example produce low gray scale color, and make the pixel voltage difference of second sub-pixel 12 be " X+ Δ V " (at first image time f1) or " X-Δ V " (at second image time f2), for example produce a higher gray scale color; As mentioned above, when being mixed in one the gray scale color with higher gray scale color and low gray scale color, can improve the phenomenon of colour cast.
Please refer to shown in Figure 8ly, it is the penetrance of display and the relation curve of voltage.When input voltage X in low penetration counting rate meter now because fixing Δ V, the clear zone that can cause and dark space brightness are unequal, but this phenomenon can be proofreaied and correct by revising the magnitude of voltage of importing; When the performance of input voltage X at high penetration, can cause brightness to descend because of fixing Δ V, in Fig. 8, because fixing Δ V causes penetrance T (X-Δ V) fall greater than penetrance T (X+ Δ V) ascensional range (difference that is T (X-Δ V) and T (X) is greater than the difference of T (X+ Δ V) with T (X)).In addition, because maximum voltage value is generally fixing,, therefore can cause display overall brightness variation so can't change by adjusting input signal.
Therefore, how to provide a kind of and can improve γ characteristic that image shows, and further improve the liquid crystal indicator and the driving method thereof of Chromatically compensated ability, just the important topic of current display industry it
Summary of the invention
Because above-mentioned problem, purpose of the present invention can be improved γ characteristic that image shows for providing a kind of, and further improve the liquid crystal indicator and the driving method thereof of Chromatically compensated ability.
To achieve these goals, according to a kind of liquid crystal indicator of the present invention, it comprises a plurality of pixels of arranging with matrix-style, each pixel comprises one first sub-pixel and one second sub-pixel at least, each first or second sub-pixel comprises a liquid crystal capacitance and a storage capacitors, and the liquid crystal capacitance of first sub-pixel and the ratio of storage capacitors are less than the liquid crystal capacitance of second sub-pixel and the ratio of storage capacitors, wherein, in one first pixel and one second pixel in all pixels, first sub-pixel of first pixel and first sub-pixel of second pixel shift to install, and second sub-pixel of second sub-pixel of first pixel and second pixel shifts to install.
In addition, to achieve these goals, comprise a data line, a scanning linear, a pixel, one first capacitor storage beam, reach one second capacitor storage beam according to a kind of liquid crystal panel of the present invention.Wherein, data line is formed on the liquid crystal panel with a first direction and an input voltage is provided, scanning linear is formed on the liquid crystal panel with a second direction vertical with first direction, pixel is formed at the infall of data line and sweep trace, and comprise one first sub-pixel and one second sub-pixel, first sub-pixel comprises one first switch, one first liquid crystal capacitance and one first storage capacitors, one first end of first switch is connected in sweep trace, one second end of first switch is connected in data line, one the 3rd end of first switch is connected in one first end of first liquid crystal capacitance and one first end of first storage capacitors, second sub-pixel comprises a second switch, one second liquid crystal capacitance and one second storage capacitors, one first end of second switch is connected in sweep trace, one second end of second switch is connected in data line, one the 3rd end of second switch is connected in one first end of second liquid crystal capacitance and one first end of second storage capacitors, first capacitor storage beam is electrically connected one second end of first storage capacitors, second capacitor storage beam is electrically connected one second end of second storage capacitors, in this, when the scanning linear activation, first switch module and second switch assembly are conducting, so that the signal of data line imports first sub-pixel and second sub-pixel into, then, after scanning linear is separated energy, the level of first capacitor storage beam and second capacitor storage beam changes respectively, so that the pixel voltage of first sub-pixel and an input voltage have one first offset voltage, the pixel voltage of second sub-pixel and input voltage have one second offset voltage, so that the pixel voltage of first sub-pixel is different with the pixel voltage of second sub-pixel, and first offset voltage is different with second offset voltage.
Moreover to achieve these goals, the driving method of complying with a kind of liquid crystal panel of the present invention is applied to a liquid crystal panel, and driving method comprises the following steps: that at first the activation scanning linear is so that first switch module and second switch assembly are conducting; Then, the signal with data line imports first sub-pixel and second sub-pixel into; At last, separating can scanning linear.Wherein, after scanning linear is separated energy, the level of first capacitor storage beam and second capacitor storage beam changes respectively, so that the pixel voltage of first sub-pixel and an input voltage have one first offset voltage, the pixel voltage of second sub-pixel and input voltage have one second offset voltage, so that the pixel voltage of first sub-pixel is different with the pixel voltage of second sub-pixel, and first offset voltage is different with second offset voltage.
From the above, because of comprising one first sub-pixel and one second sub-pixel at least according in each pixel of liquid crystal indicator of the present invention, and the liquid crystal capacitance of first sub-pixel and the ratio of storage capacitors are less than the liquid crystal capacitance of second sub-pixel and the ratio of storage capacitors, so liquid crystal indicator of the present invention and driving method thereof can make its γ value level off to ideal value, and then effectively improve the γ characteristic that image shows, and further improve Chromatically compensated ability, use the phenomenon of improving misalignment, and then better image display quality is provided.
Description of drawings
Fig. 1 shows the performance diagram of the gray scale of existing multi-domain vertical alignment-type liquid crystal display panel to light transmittance;
Fig. 2 shows the normalizing light graph of a relation of existing liquid crystal indicator;
Fig. 3 shows the overall schematic of existing many kens liquid crystal indicator;
Fig. 4 shows the schematic equivalent circuit of the pixel of another kind of existing liquid crystal indicator;
Fig. 5 shows the circuit layout synoptic diagram of liquid crystal indicator as shown in Figure 4;
Fig. 6 shows actuating regional A and the figure of the time sequential routine during area B as shown in Figure 5;
Fig. 7 shows the normalizing light graph of a relation of existing liquid crystal indicator as shown in Figure 4;
Fig. 8 shows the penetrance and the input voltage graph of a relation of existing liquid crystal indicator;
Fig. 9 shows the overall schematic according to many kens liquid crystal indicator of preferred embodiment of the present invention;
Figure 10 shows the schematic equivalent circuit according to the pixel of the liquid crystal indicator of first embodiment of the invention;
Figure 11 A shows the synoptic diagram according to the liquid crystal panel of first embodiment of the invention;
Figure 11 B to Figure 11 E show as the various different structures of the liquid crystal panel of Figure 11 A along CC ' hatching line sectional view;
Figure 12 shows the circuit layout synoptic diagram of liquid crystal indicator as shown in figure 10;
Figure 13 shows actuating regional A and the figure of the time sequential routine during area B as shown in figure 12;
Figure 14 shows the penetrance and the input voltage graph of a relation of the liquid crystal indicator of first embodiment of the invention;
Figure 15 shows the schematic equivalent circuit according to the pixel of the liquid crystal indicator of second embodiment of the invention;
Figure 16 shows the circuit layout synoptic diagram of liquid crystal indicator as shown in figure 15;
Figure 17 shows the normalizing light graph of a relation of liquid crystal indicator as shown in figure 15;
Figure 18 shows the schematic equivalent circuit according to the pixel of the liquid crystal indicator of third embodiment of the invention;
Figure 19 shows the circuit layout synoptic diagram of liquid crystal indicator as shown in figure 18; And
Figure 20 shows the entity circuit layout synoptic diagram of liquid crystal indicator as shown in figure 18.
The reference numeral explanation:
1,2,3,4 liquid crystal indicators
10,20,20 (j), 20 (j+1) pixel
11,21,21 (j), 21 (j+1), first sub-pixel
12,22,22 (j), 22 (j+1), second sub-pixel
S (1)～S (m), S (i), S (i+1) sweep trace
D (1)～D (n), D (j), D (j+1) data line
15 capacitor storage beam
B1 (1)～B1 (m), B1 (i), B1 (i+1) first capacitor storage beam
B2 (1)～B2 (m), B2 (i), B2 (i+1) second capacitor storage beam
26,26 (j), 26 (j+1) the 3rd sub-pixel
27,27 (j), 27 (j+1) the 4th sub-pixel
The zone of A, B, C, D sub-pixel
C
LC1, C
LC2, C
LC3, C
LC4Liquid crystal capacitance
C
ST1, C
ST2, C
ST3, C
ST4Storage capacitors
L1, L2, L3, L4, L5, L6 curve
M
1, M
2, M
3, M
4Switch module
100,200 liquid crystal panels
102,202 source electrode drivers
104,204 gate drivers
F1 first image time
F2 second image time
206 upper substrates
207 common electrodes
208 infrabasal plates
209,210,211,212,209 ', 210 ' transparency electrode
The ML1 the first metal layer
ML2 second metal level
Embodiment
Hereinafter with reference to relevant drawings, liquid crystal indicator and driving method thereof according to preferred embodiment of the present invention are described.
At first be noted that, liquid crystal indicator according to preferred embodiment of the present invention can be a multi-zone vertical alignment nematic (MVA, Multi-Domain Vertically Aligned) type liquid crystal indicator, a twisted-nematic (Twisted-Nematic) type liquid crystal indicator, an optical compensation curved OCB (OpticallyCompensated Bend) type liquid crystal indicator, an ASM (Axisymmetric aligned) type liquid crystal indicator, an IPS (In-plane Switching) type liquid crystal indicator; In addition, according to the driving method of the liquid crystal indicator of preferred embodiment of the present invention can be counter-rotating (dotinversion) formula driving method a bit, just in same frame time, the data signals polarity that puts on a pixel cell is opposite with the data signals polarity that puts on adjacent pixel unit.Also can be row counter-rotating (co1umn inversion) formula driving method, row counter-rotating (row inversion) formula driving method, frame counter-rotating (frame inversion) formula driving method or other kind multi-point reverse driving method (manydots inversion).
[first embodiment]
Please refer to Fig. 9, it shows a kind of many kens liquid crystal indicator 2 of first embodiment of the invention, and it comprises liquid crystal panel 200, source electrode driver 202 and gate drivers 204.Wherein, liquid crystal panel 200 comprises n*m pixel 20, source electrode driver 202 is sent to a plurality of pixels 20 by data line D (1)～D (n) with video data, gate drivers 204 is sent to liquid crystal panel 200 by sweep trace S (1)～S (m) with sweep signal and opens each row pixel 20 with sequence, and respectively first bias voltage signal and second bias voltage signal is sent to each pixel 20 on the liquid crystal panel 200 by the first capacitor storage beam B1 (1)～B1 (m) and the second capacitor storage beam B2 (1)～B2 (m).Wherein, data line D (1)～D (n) is formed on the liquid crystal panel 200 with a first direction and an input voltage is provided, scanning linear S (1)～S (m) is formed on the liquid crystal panel 200 with a second direction, pixel 20 is formed at the infall of data line D (1)～D (n) and sweep trace S (1)～S (m), and comprise one first sub-pixel and one second sub-pixel, first sub-pixel comprises one first switch, one first liquid crystal capacitance and one first storage capacitors, one first end of first switch is connected in one of sweep trace S (1)～S (m), one second end of first switch is connected in one of data line D (1)～D (n), one the 3rd end of first switch is connected in one first end of first liquid crystal capacitance and one first end of first storage capacitors, second sub-pixel comprises a second switch, one second liquid crystal capacitance and one second storage capacitors, one first end of second switch is connected in one of sweep trace S (1)～S (m), one second end of second switch is connected in one of data line D (1)～D (n), one the 3rd end of second switch is connected in one first end of second liquid crystal capacitance and one first end of second storage capacitors, first capacitor storage beam is electrically connected one second end of first storage capacitors, second capacitor storage beam is electrically connected one second end of second storage capacitors, after will being specified in relevant for the structure of first sub-pixel and second sub-pixel.In the present invention, when scanning linear S (1)～S (m) activation, first switch module and second switch assembly are conducting, so that the signal of data line D (1)～D (n) imports first sub-pixel and second sub-pixel into, then, after scanning linear is separated energy S (1)～S (m), the level of the first capacitor storage beam B1 (1)～B1 (m) and the second capacitor storage beam B2 (1)～B2 (m) changes respectively, so that the pixel voltage of first sub-pixel and an input voltage have one first offset voltage, the pixel voltage of second sub-pixel and input voltage have one second offset voltage, so that the pixel voltage of first sub-pixel is different with the pixel voltage of second sub-pixel, and first offset voltage is different with second offset voltage.
Please refer to shown in Figure 10, liquid crystal indicator 2 according to preferred embodiment of the present invention, comprise a plurality of pixels 20, it is arranged with matrix-style, and each pixel 20 comprises one first sub-pixel 21 and one second sub-pixel 22 at least, and for example, pixel 20 (j) comprises one first sub-pixel 21 (j) and one second sub-pixel 22 (j) at least, pixel 20 (j+1) comprises one first sub-pixel 21 (j+1) and one second sub-pixel 22 (j+1) at least, by that analogy.
In the present embodiment, each sub-pixel comprises a liquid crystal capacitance, a storage capacitors, reaches a switch module; As shown in figure 10, each first sub-pixel 21 comprises a liquid crystal capacitance C
LC1, a storage capacitors C
ST1An and switch module M
1, each second sub-pixel 22 comprises a liquid crystal capacitance C
LC2, a storage capacitors C
ST2An and switch module M
2In the present embodiment, switch module M
1And switch module M
2Can be respectively a thin film transistor (TFT) (TFT) or MIM switch module.In addition, liquid crystal indicator 2 also comprises multi-strip scanning line S (1)～S (m), many data line D (1)～D (n) and many capacitor storage beam 25, and wherein capacitor storage beam 25 comprises many first capacitor storage beam B1 (1)～B1 (m) and the second capacitor storage beam B2 (1)～B2 (m); In the present embodiment, sweep trace S (1)～S (m) and capacitor storage beam 25 parallel mutual settings, and data line D (1)～D (n) and sweep trace S (1)～vertical setting of S (m).
As shown in figure 10, be example with a certain pixel 20 (j), i bar sweep trace S (i) is arranged between first sub-pixel 21 and second sub-pixel 22 and is connected to switch module M
1And switch module M
2Grid, use gauge tap assembly M
1And switch module M
2On off state, j bar data line D (j) is by switch module M
1Be connected to liquid crystal capacitance C
LC1And storage capacitors C
ST1, and by switch module M
2Be connected to liquid crystal capacitance C
LC2And storage capacitors C
ST2, in addition, storage capacitors C
ST1And storage capacitors C
ST2Be connected to i bar first capacitor storage beam B1 (i) and the i bar second capacitor storage beam B2 (i) respectively, wherein, present embodiment i bar second capacitor storage beam B2 (i) and the i+1 bar first capacitor storage beam B1 (i+1) share same entity circuit layout.
From the above, as i bar sweep trace S (i) output signal gauge tap assembly M
1And switch module M
2On off state when being conducting, corresponding j bar data line D (j) can import the liquid crystal capacitance C of a data line signal to the first relative sub-pixel 21
LC1And storage capacitors C
ST1, and the liquid crystal capacitance C of the second relative sub-pixel 22
LC2And storage capacitors C
ST2
The structure of each liquid crystal capacitance and storage capacitors below will be described in detail in detail, and with the connection relationship of data line and capacitor storage beam.In the present embodiment, each liquid crystal capacitance is to be formed by a common electrode, a liquid crystal layer and pixel electrode definition, and common electrode is to establish by liquid crystal layer is relative with pixel electrode; In addition, each storage capacitors is to be stored the common electrode definition and formed by a storage electrode, an insulation course and, and the storage common electrode is to establish by insulation course is relative with storage electrode; Wherein, storage electrode is electrically connected with pixel electrode, and be electrically connected to relative data line by relative switch module, in addition, in arbitrary pixel, the common electrode of first sub-pixel is electrically connected mutually with the common electrode of second sub-pixel, ground connection simultaneously for example, and the storage common electrode of first sub-pixel is to separate setting with the storage common electrode of second sub-pixel, that is the storage common electrode of first sub-pixel is that storage common electrode with second sub-pixel is connected to two adjacent capacitor storage beam respectively, wherein, two adjacent capacitor storage beam have identical amplitude, its phase differential can differ the sequential of a sweep signal as present embodiment, promptly the different time in same image time changes the level of the first capacitor storage beam B1 (1)～B1 (m) and the second capacitor storage beam B2 (1)～B2 (m), also can change the level of the first capacitor storage beam B1 (1)～B1 (m) and the second capacitor storage beam B2 (1)～B2 (m) in same image time simultaneously.
In addition, the liquid crystal panel 200 of above-mentioned first embodiment can have several structure, for making content of the present invention more cheer and bright, slightly does explanation for four kinds of examples at this.Figure 11 A is the synoptic diagram of the liquid crystal panel 200 of first embodiment, it comprises a plurality of first sub-pixels 21 (j), 21 (j+1) and a plurality of second sub-pixel 22 (j), 22 (j+1), and comprises multi-strip scanning line S (i) and S (i+1), many first capacitor storage beam B1 (i) and B1 (i+1) and many second capacitor storage beam B2 (i) and B2 (i+1).In addition, Figure 11 B to Figure 11 E be liquid crystal panel 200 various different structures along CC ' hatching line sectional view.In addition, the present embodiment i bar second capacitor storage beam B2 (i) also can adopt with the i+1 bar first capacitor storage beam B1 (i+1) and not share same entity circuit layout.
Shown in Figure 11 B, liquid crystal panel 200 comprises upper substrate 206, common electrode 207, infrabasal plate 208, transparency electrode 209,210 and ground floor metal M L1 and second layer metal ML2, two second layer metal ML2 are respectively in order to couple transparency electrode 209 and 210 to data line D (1)～D (n), two ground floor metal M L1 constitute the first capacitor storage beam B1 and the second capacitor storage beam B2, the first metal layer ML1 and corresponding second metal level ML2 formation storage capacitors C
ST1Or C
ST2Figure 11 C is the sectional view of second kind of liquid crystal panel structure along CC ' hatching line, it is to be electrically connected with the first metal layer ML1 with first kind of different being in transparency electrode 209 and 210 of structure, and the second metal level ML2 constitutes the first capacitor storage beam B1 and the second capacitor storage beam B2.Figure 11 D is the sectional view of the third liquid crystal panel structure along CC ' hatching line, and it also is electrically connected with transparency electrode 211,212 with first kind of different being in the first metal layer ML1 of structure, to increase storage capacitors C
ST1With C
ST2Capacitance.Figure 11 E is the sectional view along CC ' hatching line of the 4th kind of liquid crystal panel structure, itself and first kind of different being in having lacked second metal level of structure.Be noted that, the design of the capacitor storage beam in the above-mentioned liquid crystal panel structure (or bias line) is only for giving an example, be not for limiting the scope of the invention, the identical effect that those skilled in the art can also utilize other structural design to realize all should be contained in the scope of the present invention.
In addition, in the present embodiment, the storage common electrode of second sub-pixel in arbitrary pixel can be connected to same capacitor storage beam (comprising one first capacitor storage beam B1 and one second capacitor storage beam B2) simultaneously with storage common electrode along first sub-pixel of time pixel of the adjacent setting of a data line direction or last pixel.
As shown in figure 10, please also refer to two pixels 20 (j), 20 (j+1) along the adjacent setting of one scan line direction, wherein, in first sub-pixel 21 (j) of pixel 20 (j) is that first sub-pixel 21 (j+1) with an inferior pixel 20 (j+1) shifts to install, and second sub-pixel 22 (j) of pixel 20 (j) is that second sub-pixel 22 (j+1) with an inferior pixel 20 (j+1) shifts to install; For the feature that makes present embodiment clearer, please refer to shown in Figure 12, it shows adjacent two pixels 20 (j), the circuit layout synoptic diagram of 20 (j+1), wherein regional A represents the viewing area of first sub-pixel 21 (j), area B is represented the viewing area of second sub-pixel 22 (j), wherein, please be simultaneously with reference to Figure 11 B and Figure 12, regional A shown in Figure 12 is the transparency electrode 209 shown in Figure 11 B, area B shown in Figure 12 is the transparency electrode 210 shown in Figure 11 B, capacitor storage beam B1 shown in Figure 12 (i), B2 (i) is the first metal layer ML1 shown in Figure 11 B, and the second metal level ML2 shown in Figure 11 B is positioned at capacitor storage beam B1 (i), B2 (i) and regional A, overlapping place of area B.As shown in Figure 12, adjacent two pixels 20 (j), first sub-pixel 21 (j) of 20 (j+1), 21 (j+1) shift to install, and adjacent two pixels 20 (j), second sub-pixel 22 (j) of 20 (j+1), 22 (j+1) also shift to install.
In the present embodiment, refer again to shown in Figure 10, in adjacent two pixels 20 (j) that are provided with along scan-line direction, 20 (j+1), first sub-pixel 21 (j+1) of first sub-pixel 21 (j) of pixel 20 (j) and an adjacent time pixel 20 (j+1) is similar to mirror image and shifts to install, and second sub-pixel 22 (j+1) of second sub-pixel 22 (j) of pixel 20 (j) and a time pixel 20 (j+1) also is similar to mirror image and shifts to install; In detail, at first the boundary (i.e. i bar sweep trace S (i)) with first sub-pixel 21 (j) and second sub-pixel 22 (j) is an axis of symmetry, obtain the mirror image of first sub-pixel 21 (j) of pixel 20 (j) in the position of second sub-pixel 22 (j), then this mirror image is moved a pixel along scan-line direction, promptly can obtain first sub-pixel 21 (j+1) of a time pixel 20 (j+1), so claim first sub-pixel 21 (j) and first sub-pixel 21 (j+1) to be similar to mirror image in the present embodiment to shift to install; In like manner, if the boundary (i.e. i bar sweep trace S (i)) with first sub-pixel 21 (j) and second sub-pixel 22 (j) is an axis of symmetry, obtain the mirror image of second sub-pixel 22 (j) of a certain pixel 20 (j) in the position of first sub-pixel 21 (j), then this mirror image is moved a pixel along scan-line direction, promptly can obtain second sub-pixel 22 (j+1) of a time pixel 20 (j+1), so claim second sub-pixel 22 (j) and second sub-pixel 22 (j+1) to be similar to mirror image in the present embodiment to shift to install.
By above stated specification (for example Figure 11 B, 11C, 11D, 11E) as can be known, the area difference that the present invention can utilize ground floor metal (for example ML1), second layer metal (for example ML2) or transparency electrode (for example 209,210) to overlap is each other adjusted the size of sub-pixel storage capacitors.Also can adjust simultaneously transparency electrode (for example 209,210) with respect to the overlapping area size of common electrode (for example 207), adjust the size of sub-pixel liquid crystal capacitance, make as shown in figure 10, in arbitrary pixel 20 (j) or 20 (j+1), the storage capacitors C of first sub-pixel 21 (j) or 21 (j+1)
ST1Than liquid crystal capacitance C
LC1Ratio less than the storage capacitors C of second sub-pixel 22 (j) or 22 (j+1)
ST2Than liquid crystal capacitance C
LC2Ratio (be C
ST1/ C
LC1＜C
ST2/ C
LC2).
Then, please refer to shown in Figure 13, it shows the time sequential routine when activating a pixel 20 (j) or 20 (j+1), is example at this with a polarity switching mode of counter-rotating (dot inversion), in the just same pixel, its polarity in the pixel voltage of adjacent image time is different, and the polarity of the pixel voltage of neighbor also is different.With regional A (as Figure 12) is example, and in the first image time f1, behind i bar sweep trace S (i) output scanning signal, the i bar first capacitor storage beam B1 (i) can change low voltage level into, and therefore, the pixel voltage of regional A (is liquid crystal capacitance C
LC1Capacitance) the storage capacitors C that can be subjected to
ST1Influence, slightly reduce to " X-Δ V by originally " X "
1", in the second image time f2, behind one scan signal under i bar sweep trace S (i) output, the i bar first capacitor storage beam B1 (i) can transform back into high-voltage level again, and at this moment, the pixel voltage of regional A (is liquid crystal capacitance C
LC1Capacitance) the storage capacitors C that can be subjected to
ST1Influence, slightly be upgraded to " X+ Δ V by originally " X "
1", therefore the brightness meeting of regional A descends a little; In addition, be example with the area B, in the first image time f1, at i bar sweep trace S (i) output pulse signal and through after half sequential, the i bar second capacitor storage beam B2 (i) can change high-voltage level into, and therefore, the pixel voltage of area B (is liquid crystal capacitance C
LC2Capacitance) the storage capacitors C that can be subjected to
ST2Influence, slightly be upgraded to " X+ Δ V by originally " X "
2", then, in the second image time f2, export next pulse signal and through after half sequential, the i bar second capacitor storage beam B2 (i) can transform back into low voltage level again at i bar sweep trace S (i), at this moment, the pixel voltage of area B (is liquid crystal capacitance C
LC2Capacitance) the storage capacitors C that can be subjected to
ST2Influence, slightly reduce to " X-Δ V by originally " X "
2", so the brightness meeting of area B promotes a little; From the above, because (C
ST1/ C
LC1＜C
ST2/ C
LC2), so Δ V
1＜Δ V
2So comparison domain A and area B can find that the brightness of area B is a bit larger tham the brightness of regional A, in this, regional A and area B can be decided to be dark space and clear zone respectively.
Moreover, because the pixel voltage difference of first sub-pixel 21 (j) or 21 (j+1) is " X-Δ V
1" (at the first image time f1) or " X+ Δ V
1" (at the second image time f2), for example produce low gray scale, and the pixel voltage difference of second sub-pixel 22 (j) or 22 (j+1) is " X+ Δ V
2" (at the first image time f1) or " X-Δ V
2" (at the second image time f2), for example produce a higher gray scale, and the storage capacitors C of first sub-pixel 21 (j) or 21 (j+1)
ST1With liquid crystal capacitance C
LC1Ratio less than the storage capacitors C of second sub-pixel 22
ST2With liquid crystal capacitance C
LC2Ratio (C
ST1/ C
LC1＜C
ST2/ C
LC2), that is Δ V
1Less than Δ V
2So, the amplitude that the brightness decline scope of regional A can promote less than the brightness of area B; For example, if X is 5 volts, Δ V
1Be 0.2 volt, Δ V
2It is 0.8 volt, then the pixel voltage difference of regional A is that the pixel voltage difference of 5-0.2=4.8 volt, area B is the 5+0.8=5.8 volt, therefore, the mean pixel voltage difference of the liquid crystal indicator 2 of preferred embodiment of the present invention can be increased to (4.8+5.8)/2=5.3 volt, and it is a little more than existing mean pixel voltage difference (5 volts); In addition, please comparison diagram 8 and Figure 14, when the performance of input voltage X at high penetration, the penetrance T of present embodiment (X-Δ V
1) fall (is T (X-Δ V less than existing penetrance T (X-Δ V) fall
1) with the difference of T (X) less than the difference of T (X-Δ V) with T (X)), and the penetrance T of present embodiment (X+ Δ V
2) ascensional range (is T (X+ Δ V greater than existing penetrance T (X+ Δ V) ascensional range
2) with the difference of T (X) greater than the difference of T (X+ Δ V) with T (X)), so the brightness of the higher gray area of present embodiment and low gray scale is all greater than the brightness of existing higher gray area and low gray scale.Hence one can see that, and the present invention can suitably utilize Δ V
1And Δ V
2Value adjust the brightness of first sub-pixel 21 (j), 21 (j+1) and second sub-pixel 22 (j), 22 (j+1), effectively promote the overall brightness of liquid crystal indicator simultaneously, and obtain preferable low aberration γ characteristic.
[second embodiment]
Please refer to shown in Figure 15ly, it shows a kind of many kens liquid crystal indicator 3 of second embodiment of the invention, and in the present embodiment, each pixel 20 also comprises one the 3rd sub-pixel 26, and each the 3rd sub-pixel 26 comprises a liquid crystal capacitance C
LC3, a storage capacitors C
ST3An and switch module M
3In addition, in the present embodiment, the storage capacitors C of second sub-pixel 22
ST2Than liquid crystal capacitance C
LC2Ratio less than the storage capacitors C of the 3rd sub-pixel 26
ST3Than liquid crystal capacitance C
LC3Ratio (C
ST2/ C
LC2＜C
ST3/ C
LC3), and among adjacent two pixels 20 (j) and 20 (j+1), the 3rd sub-pixel 26 (j) of pixel 20 (j) shifts to install with the 3rd sub-pixel 26 (j+1) of an adjacent pixel 20 (j+1).In the present embodiment, in adjacent two pixels 20 (j) that are provided with along scan-line direction and 20 (j+1), first sub-pixel 21 (j) of pixel 20 (j), second sub-pixel 22 (j), and first sub-pixel 21 (j+1) of the 3rd sub-pixel 26 (j) and a time pixel 20 (j+1), second sub-pixel 22 (j+1), and the 3rd sub-pixel 26 (j+1) be similar to mirror image respectively and shift to install.
As previously mentioned, each sub-pixel can be that axis of symmetry shifts to install with the center of the boundary of two pixels, or is the setting of line of symmetry mirror image with the boundary of each sub-pixel.For example, in the present embodiment, at first the boundary (i.e. i bar sweep trace S (i)) with first sub-pixel 21 (j) and second sub-pixel 22 (j) is an axis of symmetry, obtain the mirror image of first sub-pixel 21 (j) of pixel 20 (j) in second sub-pixel 22 (j) and the position of the 3rd sub-pixel 26 (j), then this mirror image is moved a pixel along scan-line direction, promptly can obtain first sub-pixel 21 (j+1) of a time pixel 20 (j+1), so claim first sub-pixel 21 (j) and first sub-pixel 21 (j+1) to be similar to mirror image in the present embodiment to shift to install; In like manner, if the boundary (i.e. i bar sweep trace S (i)) with first sub-pixel 21 (j) and second sub-pixel 22 (j) is an axis of symmetry, obtain the mirror image of the combination of second sub-pixel 22 (j) of pixel 20 (j) and the 3rd sub-pixel 26 (j) in the position of first sub-pixel 21 (j), then this mirror image is moved a pixel along scan-line direction, promptly can obtain second sub-pixel 22 (j+1) of a time pixel 20 (j+1) and the combination of the 3rd sub-pixel 26 (j+1), so claim in the present embodiment that second sub-pixel 22 (j) and the combination of the 3rd sub-pixel 26 (j) and the combination approximation of second sub-pixel 22 (j+1) and the 3rd sub-pixel 26 (j+1) shift to install in mirror image.As shown in figure 16, it shows the circuit layout synoptic diagram of adjacent two pixels 20 (j) and 20 (j+1), wherein regional A represents the viewing area of first sub-pixel 21 (j) and 21 (j+1), area B is represented the viewing area of second sub-pixel 22 (j) and 22 (j+1), zone C is represented the viewing area of the 3rd sub-pixel 26 (j) and 26 (j+1), wherein, please be simultaneously with reference to Figure 11 B and Figure 16, regional A shown in Figure 16 is the transparency electrode 209 shown in Figure 11 B, area B shown in Figure 16 is the transparency electrode 210 shown in Figure 11 B, zone C shown in Figure 16 also is a transparency electrode 210 ' (Figure 11 B does not show), capacitor storage beam B1 shown in Figure 16 (i), B2 (i) is the first metal layer ML1 shown in Figure 11 B, and the second metal level ML2 shown in Figure 11 B is positioned at capacitor storage beam B1 (i), B2 (i) and regional A, overlapping place of area B.As shown in Figure 16, adjacent two pixels 20 (j) are similar to mirror image with 22 (j+1) and the 3rd sub-pixel 26 (j) respectively with 26 (j+1) and shift to install with 21 (j+1), second sub-pixel 22 (j) with first sub-pixel 21 (j) of 20 (j+1).
Please refer to shown in Figure 17, present embodiment is that same pixel is distinguished into three sub-pixels again, so the normalizing light of the image that the user sees in the dead ahead of screen and oblique the place ahead can be than existing mode (as shown in Figure 7) near ideal state (slope be 1 straight line); In addition, present embodiment can also utilize the mode of the brightness of control three sub-pixels, use the further γ characteristic of improving liquid crystal indicator 3, for example, brightness that can control area C is greater than the brightness of the brightness of area B and the area B brightness greater than regional A, so the combination of comparison domain A and area B and zone C can find being combined as the clear zone of area B and zone C and regional A is the dark space; In addition because the brightness of regional A, area B and zone C is neither identical, and the luminance difference of regional A, area B and zone C can be respectively according to the storage capacitors C of first sub-pixel 21
ST1Than liquid crystal capacitance C
LC1Ratio (C
ST1/ C
LC1), the storage capacitors C of second sub-pixel 22
ST2Than liquid crystal capacitance C
LC2Ratio (C
ST2/ C
LC2), and the storage capacitors C of the 3rd sub-pixel 26
ST3Than liquid crystal capacitance C
LC3Ratio (C
ST3/ C
LC3) decide, so can the change of more resilient ground concern in the dead ahead of screen and the normalizing light in oblique the place ahead, and then adjust the γ characteristic of liquid crystal indicator 3.
[the 3rd embodiment]
Certainly, same pixel can be distinguished into again four or above sub-pixel according to liquid crystal indicator of the present invention, the technician that its embodiment should be this utilization can realize with reference to the foregoing description.Below will illustrate the embodiment that same pixel region is divided into four sub-pixels, please refer to shown in Figure 180, it is to show another kind of liquid crystal indicator 4, in the present embodiment, each pixel 20 comprises one first sub-pixel 21, one second sub-pixel 22, one the 3rd sub-pixel 26, and one the 4th sub-pixel 27, for example, pixel 20 (j) comprises one first sub-pixel 21 (j) at least, one second sub-pixel 22 (j), one the 3rd sub-pixel 26 (j), and one the 4th sub-pixel 27 (j), pixel 20 (j+1) comprises one first sub-pixel 21 (j+1) and one second sub-pixel 22 (j+1) at least, one the 3rd sub-pixel 26 (j+1), and one the 4th sub-pixel 27 (j+1), by that analogy; Wherein first sub-pixel 21 (j) and 21 (j+1) are responsible for showing dark signal with second sub-pixel 22 (j) and 22 (j+1); The 3rd sub-pixel 26 (j) and 26 (j+1) and the 4th sub-pixel 27 (j) and 27 (j+1) are responsible for showing brighter signal.Wherein the structure of first sub-pixel 21 (j) and 21 (j+1), second sub-pixel 22 (j) and 22 (j+1) and the 3rd sub-pixel 26 (j) and 26 (j+1) as previously mentioned, so repeat no more; In the present embodiment, the 4th sub-pixel 27 (j) and 27 (j+1) comprise a liquid crystal capacitance C respectively
LC4, a storage capacitors C
ST4An and switch module M
4In the present embodiment, the design of the storage capacitors of each sub-pixel and liquid crystal capacitance can be as follows: the storage capacitors C of first sub-pixel 21 (j) or 21 (j+1)
ST1Than liquid crystal capacitance C
LC1Ratio less than the storage capacitors C of second sub-pixel 22
ST2Than liquid crystal capacitance C
LC2Ratio (C
ST1/ C
LC1＜C
ST2/ C
LC2), the storage capacitors C of second sub-pixel 22 (j) or 22 (j+1)
ST2Than liquid crystal capacitance C
LC2Ratio less than the storage capacitors C of the 3rd sub-pixel 26 (j) or 26 (j+1)
ST3Than liquid crystal capacitance C
LC3Ratio (C
ST2/ C
LC2＜C
ST3/ C
LC3), the storage capacitors C of the 3rd sub-pixel 26 (j) or 26 (j+1)
ST3Than liquid crystal capacitance C
LC3Ratio less than the storage capacitors C of the 4th sub-pixel 27 (j) or 27 (j+1)
ST4Than liquid crystal capacitance C
LC4Ratio (C
ST3/ C
LC3＜C
ST4/ C
LC4), i.e. C
ST1/ C
LC1＜C
ST2/ C
LC2＜C
ST3/ C
LC3＜C
ST4/ C
LC4Just control the storage capacitors C of each sub-pixel
STnWith liquid crystal capacitance C
LCn, make that the offset voltage that is subjected to can producing under the influence of capacitor storage beam signal is Δ V
n, wherein the offset voltage that produced of first sub-pixel is Δ V
1, the offset voltage that second sub-pixel is produced is Δ V
2, the offset voltage that the 3rd sub-pixel is produced is Δ V
3, the offset voltage that the 4th sub-pixel is produced is Δ V
4, make Δ V at last
1＜Δ V
2＜Δ V
3＜Δ V
4
In addition, in the present embodiment, the storage capacitors of each sub-pixel and liquid crystal capacitance design also can be as follows: the storage capacitors C of first sub-pixel 21 (j) or 21 (j+1)
ST1Than liquid crystal capacitance C
LC1Ratio equal the storage capacitors C of the 3rd sub-pixel 26 (j) or 26 (j+1)
ST3Than liquid crystal capacitance C
LC3Ratio (C
ST1/ C
LC1=C
ST3/ C
LC3), the storage capacitors C of second sub-pixel 22 (j) or 22 (j+1)
ST2Than liquid crystal capacitance C
LC2Ratio equal the storage capacitors C of the 4th sub-pixel 27 (j) or 27 (j+1)
ST4Than liquid crystal capacitance C
LC4Ratio (C
ST2/ C
LC2=C
ST4/ C
LC4), the storage capacitors C of the 3rd sub-pixel 26 (j) or 26 (j+1)
ST3Than liquid crystal capacitance C
LC3Ratio less than the storage capacitors C of the 4th sub-pixel 27 (j) or 27 (j+1)
ST4Than liquid crystal capacitance C
LC4Ratio (C
ST3/ C
LC3＜C
ST4/ C
LC4), i.e. C
ST1/ C
LC1=C
ST3/ C
LC3＜C
ST2/ C
LC2=C
ST4/ C
LC4, Δ V just
1=Δ V
3＜Δ V
2=Δ V
4
In the present embodiment, in adjacent two pixels 20 (j) and 20 (j+1) that are provided with along scan-line direction, first sub-pixel 21 (j) of pixel 20 (j), second sub-pixel 22 (j), the 3rd sub-pixel 26 (j), and the 4th sub-pixel 27 (j) respectively with first sub-pixel 21 (j+1) of an inferior pixel 20 (j+1), second sub-pixel 22 (j+1), the 3rd sub-pixel 26 (j+1), and the 4th sub-pixel 27 (j+1) be similar to mirror image and shift to install.In detail, at first the boundary (i.e. i bar sweep trace S (i)) with first sub-pixel 21 (j) and second sub-pixel 22 (j) is an axis of symmetry, obtain first sub-pixel 21 (j) of pixel 20 (j) and the mirror image of the combination of the 4th sub-pixel 27 (j) in second sub-pixel 22 (j) and the position of the 3rd sub-pixel 26 (j), then this mirror image is moved a pixel along scan-line direction, promptly can obtain first sub-pixel 21 (j+1) and the 4th sub-pixel 27 (j+1) of a time pixel 20 (j+1), so claim in the present embodiment that first sub-pixel 21 (j) and the combination of the 4th sub-pixel 27 (j) and the combination approximation of first sub-pixel 21 (j+1) and the 4th sub-pixel 27 (j+1) shift to install in mirror image; In like manner, if the boundary (i.e. i bar sweep trace S (i)) with first sub-pixel 21 (j) and second sub-pixel 22 (j) is an axis of symmetry, obtain the mirror image of the combination of second sub-pixel 22 (j) of pixel 20 (j) and the 3rd sub-pixel 26 (j) in the position of first sub-pixel 21 (j) and the 4th sub-pixel 27 (j), then this mirror image is moved a pixel along scan-line direction, promptly can obtain second sub-pixel 22 (j+1) of a time pixel 20 (j+1) and the combination of the 3rd sub-pixel 26 (j+1), so claim in the present embodiment that second sub-pixel 22 (j) and the combination of the 3rd sub-pixel 26 (j) and the combination approximation of second sub-pixel 22 (j+1) and the 3rd sub-pixel 26 (j+1) shift to install in mirror image.As shown in figure 19, it shows the circuit layout synoptic diagram of adjacent two pixels 20 (j) and 20 (j+1), wherein regional A represents the viewing area of first sub-pixel 21 (j) and 21 (j+1), area B is represented the viewing area of second sub-pixel 22 (j) and 22 (j+1), zone C is represented the viewing area of the 3rd sub-pixel 26 (j) and 26 (j+1), region D is represented the viewing area of the 4th sub-pixel 27 (j) and 27 (j+1), wherein, please be simultaneously with reference to Figure 11 B and Figure 19, regional A shown in Figure 19 is the transparency electrode 209 shown in Figure 11 B, area B shown in Figure 19 is the transparency electrode 210 shown in Figure 11 B, zone C shown in Figure 19 and region D also are respectively a transparency electrode 210 ' and a transparency electrode 209 ' (Figure 11 B does not show), capacitor storage beam B1 shown in Figure 19 (i), B2 (i) is the first metal layer ML1 shown in Figure 11 B, and the second metal level ML2 shown in Figure 11 B is positioned at capacitor storage beam B1 (i), B2 (i) and regional A, overlapping place of area B.As shown in Figure 19, adjacent two pixels 20 (j) are similar to mirror image with 26 (j+1) and the 4th sub-pixel 27 (j) respectively with 27 (j+1) and shift to install with 22 (j+1), the 3rd sub-pixel 26 (j) with 21 (j+1), second sub-pixel 22 (j) with first sub-pixel 21 (j) of 20 (j+1).
In addition, Figure 20 shows the entity circuit layout synoptic diagram of liquid crystal indicator as shown in figure 18, and wherein the first capacitor storage beam B1 (i), B1 (i+1) adopt the circuit layout shown in Figure 11 B to design with the second capacitor storage beam B2 (i).Moreover, please refer to shown in Figure 19, present embodiment is that same pixel is distinguished into four sub-pixels again, so the normalizing light of the image that the user sees in the dead ahead of screen and oblique the place ahead can be than existing mode (as shown in Figure 5) near ideal state (slope be 1 straight line); In addition, present embodiment can also utilize the mode of the brightness of control four sub-pixels, use the further γ characteristic of improving liquid crystal indicator 4, for example, brightness that can control area C greater than the brightness of the brightness of area B, area B greater than the brightness of the brightness of region D and region D brightness greater than regional A, so the combination of the combination of comparison domain A and region D and area B and zone C can find being combined as the clear zone of area B and zone C and regional A and region D be combined as the dark space; In addition because the brightness of regional A, area B, zone C and region D is neither identical, and the luminance difference of regional A, area B and zone C can be respectively according to the storage capacitors C of first sub-pixel 21
ST1Than liquid crystal capacitance C
LC1Ratio (C
ST1/ C
LC1), the storage capacitors C of second sub-pixel 22
ST2Than liquid crystal capacitance C
LC2Ratio (C
ST2/ C
LC2), the storage capacitors of the 3rd sub-pixel 26 compares C
ST3Liquid crystal capacitance C
LC3Ratio (C
ST3/ C
LC3), and the storage capacitors C of the 4th sub-pixel 27
ST4Than liquid crystal capacitance C
LC4Ratio (C
ST4/ C
LC4) decide, so the user can flexibly change the normalizing light relation in dead ahead with oblique the place ahead of screen, and then adjust the γ characteristic of liquid crystal indicator 4.
In addition, the present invention has also disclosed a kind of driving method of liquid crystal panel, and it is to be applied to above-mentioned liquid crystal panel, and comprises the following step: at first, the activation scanning linear is so that first switch module and second switch assembly are conducting; Then, the signal with data line imports first sub-pixel and second sub-pixel into; At last, separating can scanning linear.In the present invention, after scanning linear was separated energy, the level of first capacitor storage beam and second capacitor storage beam changed respectively, so that the pixel voltage of first sub-pixel and an input voltage have one first offset voltage (as Δ V
1), the pixel voltage of second sub-pixel and input voltage have one second offset voltage (as Δ V
2), so that the pixel voltage of first sub-pixel is different with the pixel voltage of second sub-pixel, and first offset voltage is different with this second offset voltage.Because the driving method of liquid crystal panel of the present invention is described in more detail in the foregoing description, so repeat no more.
In sum, because of comprising one first sub-pixel and one second sub-pixel at least according in each pixel of liquid crystal indicator of the present invention, and the liquid crystal capacitance of first sub-pixel and the ratio of storage capacitors are less than the liquid crystal capacitance of second sub-pixel and the ratio of storage capacitors, so liquid crystal indicator of the present invention and driving method thereof can make its γ value level off to ideal value, and then effectively improve the γ characteristic that image shows, and further improve Chromatically compensated ability, use the phenomenon of improving misalignment, and then better image display quality is provided.
The above only is an illustrative, but not is restricted.Anyly do not break away from spirit of the present invention and category, and, all should be contained in the claim of the present invention its equivalent modifications of carrying out or change.
Claims (24)
1. liquid crystal indicator comprises:
A plurality of pixels, it is arranged with matrix-style, and each described pixel comprises one first sub-pixel and one second sub-pixel at least, an arbitrary liquid crystal capacitance and storage capacitors of comprising of described first sub-pixel and described second sub-pixel, and respectively this storage capacitors of this first sub-pixel than the ratio of this liquid crystal capacitance less than this storage capacitors of this second sub-pixel respectively ratio than this liquid crystal capacitance
Wherein, in described pixel one first pixel and one second pixel wherein, this first sub-pixel of this first pixel is that this first sub-pixel with this second pixel shifts to install, and this second sub-pixel of this first pixel is that this second sub-pixel with this second pixel shifts to install.
2. liquid crystal indicator as claimed in claim 1 wherein should
First pixel be with this second pixel along the adjacent setting of one scan line direction.
3. liquid crystal indicator as claimed in claim 1, wherein, in this first pixel and this second pixel, this first sub-pixel of this first pixel is that this first sub-pixel with this second pixel is similar to mirror image and shifts to install, and this second sub-pixel of this first pixel is that this second sub-pixel with this second pixel is similar to mirror image and shifts to install.
4. liquid crystal indicator as claimed in claim 3, wherein this first sub-pixel of this first sub-pixel of this first pixel and this second pixel is that axis of symmetry shifts to install with the center of the boundary of this first pixel and this second pixel, and this second sub-pixel of this second sub-pixel of this first pixel and this second pixel is that axis of symmetry shifts to install with the center of the boundary of this first pixel and this second pixel.
5. liquid crystal indicator as claimed in claim 1, wherein each described pixel also comprises one the 3rd sub-pixel, and each described the 3rd sub-pixel comprises a liquid crystal capacitance and a storage capacitors, and this storage capacitors of this second sub-pixel than the ratio of this liquid crystal capacitance less than this storage capacitors of the 3rd sub-pixel ratio than this liquid crystal capacitance, in this first pixel and this second pixel, the 3rd sub-pixel of this first pixel is that the 3rd sub-pixel with this second pixel shifts to install.
6. liquid crystal indicator as claimed in claim 5, wherein, in this first pixel and this second pixel, this first sub-pixel of this first pixel is that this first sub-pixel mirror image with this second pixel shifts to install, this second sub-pixel of this first pixel is that this second sub-pixel with this second pixel is similar to mirror image and shifts to install, and the 3rd sub-pixel of this first pixel is that the 3rd sub-pixel with this second pixel is similar to mirror image and shifts to install.
7. liquid crystal indicator as claimed in claim 6, wherein this first sub-pixel of this first sub-pixel of this first pixel and this second pixel is that axis of symmetry shifts to install with the center of the boundary of this first pixel and this second pixel, and the combination of this second sub-pixel of this first pixel and the 3rd sub-pixel be with the combination of this second sub-pixel of this second pixel and the 3rd sub-pixel be that axis of symmetry shifts to install with the center of the boundary of this first pixel and this second pixel.
8. liquid crystal indicator as claimed in claim 1, wherein:
Each described liquid crystal capacitance is to be formed by a common electrode, a liquid crystal layer and pixel electrode definition, and this common electrode is established by this liquid crystal layer is relative with this pixel electrode; And
Each described storage capacitors is to be stored the common electrode definition and formed by a storage electrode, an insulation course and, and this storage electrode is electrically connected with this pixel electrode, and this storage common electrode is established by this insulation course is relative with this storage electrode.
9. liquid crystal indicator as claimed in claim 8, wherein in described pixel arbitrary, this common electrode of this first sub-pixel and this common electrode of this second sub-pixel are electrically connected mutually, and this storage common electrode of this first sub-pixel is to separate setting with this storage common electrode of this second sub-pixel.
10. liquid crystal indicator as claimed in claim 9 also comprises:
Many capacitor storage beam, it is provided with along one scan line direction respectively, wherein in described pixel arbitrary, this storage common electrode of this first sub-pixel and this storage common electrode of this second sub-pixel be connected to respectively adjacent described capacitor storage beam wherein two.
11. liquid crystal indicator as claimed in claim 10, wherein in described pixel arbitrary, this storage common electrode of this second sub-pixel is connected to one of described capacitor storage beam simultaneously with another this storage common electrode of this first sub-pixel along the described pixel of the adjacent setting of a data line direction.
12. liquid crystal indicator as claimed in claim 1 also comprises:
The multi-strip scanning line, it is provided with along one scan line direction respectively;
Many data lines, it is provided with along a data line direction respectively; And
Many to switch module, wherein this manyly is arranged in the described pixel the switch module correspondence,
Wherein, in wherein arbitrary of described pixel, corresponding this is arranged at respectively in this first sub-pixel and this second sub-pixel switch module, and this is connected to one of one of corresponding described sweep trace and described data line simultaneously to switch module, and this on off state to switch module is controlled by corresponding this sweep trace.
13. liquid crystal indicator as claimed in claim 12, wherein when this on off state to switch module was conducting, corresponding this data line was imported a data line signal to this relative first sub-pixel and the described liquid crystal capacitance and the described storage capacitors of this second sub-pixel.
14. liquid crystal indicator as claimed in claim 12, wherein said switch module comprise a thin film transistor (TFT) respectively at least.
15. a liquid crystal panel comprises:
One data line is formed on this liquid crystal panel and an input voltage is provided with a first direction;
One scanning linear is formed on this liquid crystal panel with a second direction, and this first direction is vertical with this second direction;
One pixel is formed at the infall of this data line and this sweep trace, comprising:
One first sub-pixel, comprise one first switch, one first liquid crystal capacitance and one first storage capacitors, wherein, one first end of this first switch is connected in this sweep trace, one second end of this first switch is connected in this data line, one the 3rd end of this first switch is connected in one first end of this first liquid crystal capacitance and one first end of this first storage capacitors, and
One second sub-pixel, comprise a second switch, one second liquid crystal capacitance and one second storage capacitors, wherein, one first end of this second switch is connected in this sweep trace, one second end of this second switch is connected in this data line, and one the 3rd end of this second switch is connected in one first end of this second liquid crystal capacitance and one first end of this second storage capacitors;
One first capacitor storage beam is electrically connected one second end of this first storage capacitors; And
One second capacitor storage beam is electrically connected one second end of this second storage capacitors;
Wherein, when this scanning linear activation, this first switch module and this second switch assembly are conducting, so that the signal of this data line imports this first sub-pixel and this second sub-pixel into, then, after this scanning linear is separated energy, the level of this first capacitor storage beam and this second capacitor storage beam changes respectively, so that the pixel voltage of this first sub-pixel and an input voltage have one first offset voltage, the pixel voltage of this second sub-pixel and this input voltage have one second offset voltage, so that the pixel voltage of this first sub-pixel is different with the pixel voltage of this second sub-pixel, and this first offset voltage is different with this second offset voltage.
16. liquid crystal panel as claimed in claim 15 also comprises a bias generating circuit, is formed on the substrate of this liquid crystal panel, and produces a bias voltage signal to separate energy this first capacitor storage beam of rear drive and this second capacitor storage beam in this first scanning linear.
17. liquid crystal panel as claimed in claim 15, wherein this pixel also comprises one the 3rd sub-pixel, it comprises one the 3rd switch, one the 3rd liquid crystal capacitance and one the 3rd storage capacitors, one first end of the 3rd switch is connected in this sweep trace, one second end of the 3rd switch is connected in this data line, one the 3rd end of the 3rd switch is connected in one first end of the 3rd liquid crystal capacitance and one first end of the 3rd storage capacitors, this second capacitor storage beam is electrically connected one second end of the 3rd storage capacitors, when this scanning linear activation, this first switch module, this second switch assembly and the 3rd switch module are conducting, so that the signal of this data line imports this first sub-pixel into, this second sub-pixel and the 3rd sub-pixel, then, after this scanning linear is separated energy, this first capacitor storage beam, the level of this second capacitor storage beam and the 3rd capacitor storage beam changes respectively, so that the pixel voltage of this first sub-pixel and this input voltage have this first offset voltage, the pixel voltage of this second sub-pixel and this input voltage have this second offset voltage, the pixel voltage of the 3rd sub-pixel and this input voltage have one the 3rd offset voltage, so that the pixel voltage of this first sub-pixel, the pixel voltage of the pixel voltage of this second sub-pixel and the 3rd sub-pixel is different, and this first offset voltage, this second offset voltage and the 3rd offset voltage are different.
18. liquid crystal panel as claimed in claim 17, wherein this pixel also comprises one the 4th sub-pixel, it comprises one the 4th switch, one the 4th liquid crystal capacitance and one the 4th storage capacitors, one first end of the 4th switch is connected in this sweep trace, one the 4th end of the 4th switch is connected in this data line, one the 3rd end of the 4th switch is connected in one first end of the 4th liquid crystal capacitance and one first end of the 4th storage capacitors, this first capacitor storage beam is electrically connected one second end of the 4th storage capacitors, when this scanning linear activation, this first switch module, this second switch assembly, the 3rd switch module and the 4th switch module are conducting, so that the signal of this data line imports this first sub-pixel into, this second sub-pixel, the 3rd sub-pixel and the 4th sub-pixel, then, after this scanning linear is separated energy, this first capacitor storage beam, this second capacitor storage beam, the level of the 3rd capacitor storage beam and the 4th capacitor storage beam changes respectively, so that the pixel voltage of this first sub-pixel and this input voltage have this first offset voltage, the pixel voltage of this second sub-pixel and this input voltage have this second offset voltage, the pixel voltage of the 3rd sub-pixel and this input voltage have the 3rd offset voltage, the pixel voltage of the 4th sub-pixel and this input voltage have one the 4th offset voltage, so that the pixel voltage of this first sub-pixel, the pixel voltage of this second sub-pixel, the pixel voltage of the pixel voltage of the 3rd sub-pixel and the 4th sub-pixel is different, and this first offset voltage, this second offset voltage, the 3rd offset voltage and the 4th offset voltage are different.
19. liquid crystal panel as claimed in claim 15, wherein said switch module comprise a thin film transistor (TFT) respectively at least.
20. liquid crystal panel as claimed in claim 15, wherein this liquid crystal panel is a multi-domain perpendicular alignment-type liquid crystal panel, a twisted nematic liquid crystals display device, an optical compensation curved OCB type liquid crystal indicator, an ASM type liquid crystal panel or an IPS type liquid crystal panel.
21. the driving method of a liquid crystal panel, it is applied to a liquid crystal panel, this liquid crystal panel comprises a data line, one scanning linear, one pixel, one first capacitor storage beam and one second capacitor storage beam, this data line is formed on this liquid crystal panel with a first direction, this scanning linear is formed on this liquid crystal panel with a second direction, this first direction is vertical with this second direction, this pixel is formed at the infall of this data line and this sweep trace, and this pixel comprises one first sub-pixel and one second sub-pixel, this first sub-pixel comprises one first switch, one first liquid crystal capacitance and one first storage capacitors, one first end of this first switch is connected in this sweep trace, one second end of this first switch is connected in this data line, one the 3rd end of this first switch is connected in one first end of this first liquid crystal capacitance and one first end of this first storage capacitors, this second sub-pixel comprises a second switch, one second liquid crystal capacitance and one second storage capacitors, wherein, one first end of this second switch is connected in this sweep trace, one second end of this second switch is connected in this data line, one the 3rd end of this second switch is connected in one first end of this second liquid crystal capacitance and one first end of this second storage capacitors, this first capacitor storage beam is electrically connected one second end of this first storage capacitors, this second capacitor storage beam, be electrically connected one second end of this second storage capacitors, wherein this driving method comprises the following step:
This scanning linear of activation is so that this first switch module and this second switch assembly are conducting;
Import the signal of this data line into this first sub-pixel and this second sub-pixel; And
Separate this scanning linear of energy, wherein after this scanning linear is separated energy, the level of this first capacitor storage beam and this second capacitor storage beam changes respectively, so that the pixel voltage of this first sub-pixel and an input voltage have one first offset voltage, the pixel voltage of this second sub-pixel and this input voltage have one second offset voltage, so that the pixel voltage of this first sub-pixel is different with the pixel voltage of this second sub-pixel, and this first offset voltage is different with this second offset voltage.
22. driving method as claimed in claim 21, wherein this liquid crystal panel also comprises a bias generating circuit, is formed on the substrate of this liquid crystal panel, and this driving method also comprises the following steps:
Producing a bias voltage signal by this bias generating circuit can this first capacitor storage beam of rear drive and this second capacitor storage beam to separate in this first scanning linear.
23. driving method as claimed in claim 21, wherein this pixel also comprises one the 3rd sub-pixel, it comprises one the 3rd switch, one the 3rd liquid crystal capacitance and one the 3rd storage capacitors, one first end of the 3rd switch is connected in this sweep trace, one second end of the 3rd switch is connected in this data line, one the 3rd end of the 3rd switch is connected in one first end of the 3rd liquid crystal capacitance and one first end of the 3rd storage capacitors, this second capacitor storage beam is electrically connected one second end of the 3rd storage capacitors, when this scanning linear activation, this first switch module, this second switch assembly and the 3rd switch module are conducting, so that the signal of this data line imports this first sub-pixel into, this second sub-pixel and the 3rd sub-pixel, after this scanning linear is separated energy, this first capacitor storage beam, the level of this second capacitor storage beam and the 3rd capacitor storage beam changes respectively, so that the pixel voltage of this first sub-pixel and this input voltage have this first offset voltage, the pixel voltage of this second sub-pixel and this input voltage have this second offset voltage, the pixel voltage of the 3rd sub-pixel and this input voltage have one the 3rd offset voltage, so that the pixel voltage of this first sub-pixel, the pixel voltage of the pixel voltage of this second sub-pixel and the 3rd sub-pixel is different, and this first offset voltage, this second offset voltage and the 3rd offset voltage are different.
24. driving method as claimed in claim 23, wherein this pixel also comprises one the 4th sub-pixel, it comprises one the 4th switch, one the 4th liquid crystal capacitance and one the 4th storage capacitors, one first end of the 4th switch is connected in this sweep trace, one the 4th end of the 4th switch is connected in this data line, one the 3rd end of the 4th switch is connected in one first end of the 4th liquid crystal capacitance and one first end of the 4th storage capacitors, this first capacitor storage beam is electrically connected one second end of the 4th storage capacitors, when this scanning linear activation, this first switch module, this second switch assembly, the 3rd switch module and the 4th switch module are conducting, so that the signal of this data line imports this first sub-pixel into, this second sub-pixel, the 3rd sub-pixel and the 4th sub-pixel, then, after this scanning linear is separated energy, this first capacitor storage beam, this second capacitor storage beam, the level of the 3rd capacitor storage beam and the 4th capacitor storage beam changes respectively, so that the pixel voltage of this first sub-pixel and this input voltage have this first offset voltage, the pixel voltage of this second sub-pixel and this input voltage have this second offset voltage, the pixel voltage of the 3rd sub-pixel and this input voltage have the 3rd offset voltage, the pixel voltage of the 4th sub-pixel and this input voltage have one the 4th offset voltage, so that the pixel voltage of this first sub-pixel, the pixel voltage of this second sub-pixel, the pixel voltage of the pixel voltage of the 3rd sub-pixel and the 4th sub-pixel is different, and this first offset voltage, this second offset voltage, the 3rd offset voltage and the 4th offset voltage are different.
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| CN2007100921073A CN101281310B (en) | 2007-04-02 | 2007-04-02 | Crystal display device and driving method thereof |
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| CN2007100921073A CN101281310B (en) | 2007-04-02 | 2007-04-02 | Crystal display device and driving method thereof |
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| CN201210092447.7A Division CN102621730B (en) | 2007-04-02 | 2007-04-02 | Liquid crystal panel |
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