CN1967359B - Multi-field vertical assigned LCD panel - Google Patents
Multi-field vertical assigned LCD panel Download PDFInfo
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- CN1967359B CN1967359B CN2005101271622A CN200510127162A CN1967359B CN 1967359 B CN1967359 B CN 1967359B CN 2005101271622 A CN2005101271622 A CN 2005101271622A CN 200510127162 A CN200510127162 A CN 200510127162A CN 1967359 B CN1967359 B CN 1967359B
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Abstract
The invention discloses a multi-domain vertical alignment of liquid crystal display panels, which include an active element array substrate, a facing substrate and a liquid crystal layer. The active element array substrate has a number of pixel units. The liquid crystal layer is installed between the active element array substrate and the facing substrate. In particular, each pixel on the LCD modules is divided into groups in many areas, and each group includes all kinds of areas, and each area to provide the group an effective liquid crystal layer voltage differences. Based on the above, the present invention can reduce the brightness changes with the perspective of the extent of those changes.
Description
Technical field
The relevant a kind of display of the present invention, and particularly relevant for a kind of multiple domain vertical orientation type liquid crystal display.
Background technology
Because the demand of display hurriedly increased with day, so industry drops into the development of related display with all strength.Wherein, (cathode ray tube CRT) because of having excellent display quality and technology maturation, therefore monopolizes the monitor market all the year round with cathode-ray tube (CRT) again.Yet, recently since the rise of environmental protection notion for its energy resource consumption big with produce the bigger characteristic of radiant quantity, therefore add that its product flattening space is limited, can't satisfy the market trend of market for light, thin, short, little, U.S. and low consumpting power.Therefore, have that high image quality, space utilization efficient are good, (thin filmtransistor liquid crystal display TFT-LCD) becomes the main flow in market to the Thin Film Transistor-LCD of low consumpting power, advantageous characteristic such as radiationless gradually.
At present, market is towards characteristics such as height contrast (high contrast ratio), the counter-rotating of no GTG (no gray scale inversion), colour cast little (little color shift), brightness height (high luminance), high color richness, high color saturation, rapid reaction and wide viewing angles for the performance requirement of LCD.Can reach the technology of wide viewing angle requirement at present, for example stable twisted nematic liquid crystal (TN) adds view film (wideviewing film), copline suitching type (in-plane switching, IPS) LCD, limit suitching type (fringe field switching) LCD and multidomain vertical alignment type (multi-domainvertically alignment, MVA) mode such as Thin Film Transistor-LCD.
For existing multiple domain vertical orientation type liquid crystal display, because the orientation protrusion (alignment protrusion) or the slit (slit) that are disposed on colored optical filtering substrates or the thin-film transistor array base-plate can be so that liquid crystal molecule be multi-direction arrangement, obtain several different orientation fields (domain), so multiple domain vertical orientation type liquid crystal display can be reached the requirement of wide viewing angle.However, the penetrance of multiple domain vertical orientation type liquid crystal display still can have different curvature along with the visual angle change to the curve (transmittance-level curve) of GTG.In other words, when the visual angle changed, the shown brightness meeting that goes out of multiple domain vertical orientation type liquid crystal display changed, and then causes phenomenons such as colour cast and color saturation deficiency.
Summary of the invention
In view of this, the purpose of this invention is to provide a kind of multi-field vertical assigned LCD panel, change the amplitude that changes with the visual angle to dwindle brightness.
Based on above-mentioned purpose or other purposes, the present invention proposes a kind of multi-field vertical assigned LCD panel, it comprises an active component array base board, a subtend substrate and a liquid crystal layer, wherein active component array base board has a plurality of pixel cells (pixel unit), and liquid crystal layer is disposed between active component array base board and the subtend substrate.Especially, the liquid crystal layer on each pixel cell is divided into a plurality of fields group (domain set), and each field group includes the field (domain) of all kinds, and the effective voltage inequality of the liquid crystal layer to each field group is provided.
According to preferred embodiment of the present invention, above-mentioned subtend substrate has uses electrode layer altogether towards active component array base board, and active component array base board also comprises plurality of scanning wirings and many data wirings, and wherein each pixel cell is by the scan wiring of correspondence one of them and one of them control of data wiring.
According to preferred embodiment of the present invention, above-mentioned field group for example is one first field group and one second field group.
According to preferred embodiment of the present invention, each above-mentioned pixel cell comprises an active member, one first pixel electrode, a metal level and one second pixel electrode, wherein first pixel electrode and active member electrically connect, and the position of first pixel electrode is the position that corresponds to the first field group.In addition, the metal level and first pixel electrode electrically connect, and second pixel electrode and metal level are coupled into an electric capacity, and the position of second pixel electrode is the position that corresponds to the second field group.
According to preferred embodiment of the present invention, each above-mentioned pixel cell also comprises a shared distribution, and metal level is to be positioned at shared distribution top.
According to preferred embodiment of the present invention, each above-mentioned pixel cell comprises an active member, one first pixel electrode, one second pixel electrode and a resistive element, and wherein first pixel electrode and active member electrically connect.In addition, the first pixel electrode position is the position that corresponds to the first field group, and resistive element and active member electrically connect.In addition, second pixel electrode and resistive element electrically connect, and the position of second pixel electrode is the position that corresponds to the second field group.
According to preferred embodiment of the present invention, above-mentioned resistive element for example is a transistor, and the transistor AND gate active member is to be driven simultaneously.
According to preferred embodiment of the present invention, above-mentioned active member for example is a thin film transistor (TFT).
According to preferred embodiment of the present invention, above-mentioned resistive element comprises a transistor.
According to preferred embodiment of the present invention, above-mentioned pixel cell also comprises a shared distribution, and it is electrically connected at transistor, and shared distribution is suitable for opening this transistor.
According to preferred embodiment of the present invention, above-mentioned pixel cell also comprises a reservior capacitor, and it is electrically connected between the shared distribution and first active member.
According to preferred embodiment of the present invention, each above-mentioned pixel cell comprises an active member, a pixel electrode and a dielectric layer, and wherein pixel electrode and active member electrically connect.In addition, dielectric layer is disposed on the pixel electrode, and the position of dielectric layer is the position that corresponds to the second field group.
According to preferred embodiment of the present invention, the material of above-mentioned dielectric layer for example is resin material (resin).
According to preferred embodiment of the present invention, each above-mentioned pixel cell comprises one first active member, one second active member, one the 3rd active member, one first pixel electrode, one second pixel electrode and a capacitor.Wherein first pixel electrode and first active member electrically connect, and the position of first pixel electrode is the position that corresponds to the first field group.In addition, second pixel electrode and second active member electrically connect, and the position of second pixel electrode is the position that corresponds to the second field group.In addition, first active member and second active member and the pairing scan wiring of pixel cell and data wiring electrically connect, and the 3rd active member and next bar scan wiring electrically connect, and capacitor electrically connects by the 3rd active member and second pixel electrode.
According to preferred embodiment of the present invention, above-mentioned capacitor comprises one first electrode and one second electrode, wherein second electrode is disposed at first electrode below, and the material of first electrode, first pixel electrode and second pixel electrode is identical, and second electrode is identical with the material of data wiring.
According to preferred embodiment of the present invention, the first above-mentioned active member, second active member and the 3rd active member for example are thin film transistor (TFT)s.
According to preferred embodiment of the present invention, each above-mentioned pixel cell comprises one first active member, one first pixel electrode, one second active member and one second pixel electrode.Wherein, the pairing scan wiring of first active member and pixel cell electrically connects, and first pixel electrode and the electric connection of first active member.In addition, the position of first pixel electrode is the position that corresponds to the first field group.Second above-mentioned active member and the pairing data wiring of pixel cell and next bar scan wiring electrically connect, and second active member is suitable for being opened or closing by next bar scan wiring.In addition, second pixel electrode is electrically connected between first active member and second active member, and second pixel electrode is the position that corresponds to the second field group.
Based on above-mentioned purpose or other purposes, the present invention proposes a kind of multi-field vertical assigned LCD panel, it comprises an active component array base board, a subtend substrate and a liquid crystal layer, wherein active component array base board has a plurality of pixel cells, and the subtend substrate has and uses electrode layer altogether, and liquid crystal layer is to be disposed between active component array base board and the subtend substrate.Especially, the liquid crystal layer on each pixel cell is to mark off one first field group and one second field group, and the first field group and the second field group include the field of all kinds.In addition, each pixel cell comprises an active member, a pixel electrode and a plurality of orientation thrust, and wherein pixel electrode is to electrically connect with active member, and pixel electrode has a plurality of slits, and the position of these slits is the positions that correspond to the second field group.In addition, these orientation thrusts are disposed on the pixel electrode, and the position of these orientation thrusts is to correspond to the first field group.
Based on above-mentioned purpose or other purposes, the present invention proposes a kind of multi-field vertical assigned LCD panel, and it comprises an active component array base board, a subtend substrate and a liquid crystal layer.Wherein, active component array base board has a plurality of pixel cells, and liquid crystal layer is to be disposed between active component array base board and the subtend substrate.In addition, the subtend substrate has altogether with electrode layer and is disposed at a plurality of first orientation members on the common electrode layer.Especially, the liquid crystal layer on each pixel cell marks off one first field group and one second field group, and the first field group and the second field group include the field of all kinds.Each above-mentioned pixel cell comprises an active member, a pixel electrode and a plurality of second orientation member, and wherein pixel electrode and active member electrically connect, and these second orientation members are disposed on the pixel electrode.Minor increment that it should be noted that the second orientation member that each first orientation member and its both sides are nearest is kept one first spacing and one second spacing, and first spacing and the second spacing inequality.
According to preferred embodiment of the present invention, the zone between the nearest second orientation member in above-mentioned each first orientation member and its both sides is the position that corresponds to the first field group and the second field group respectively.
According to preferred embodiment of the present invention, the first above-mentioned orientation member for example is an orientation thrust.
According to preferred embodiment of the present invention, the first above-mentioned orientation member for example is a slit.
According to preferred embodiment of the present invention, the second above-mentioned orientation member for example is an orientation thrust.
According to preferred embodiment of the present invention, the second above-mentioned orientation member for example is a slit.
According to preferred embodiment of the present invention, above-mentioned active member for example is a thin film transistor (TFT).
According to preferred embodiment of the present invention, the first above-mentioned spacing and the difference of second spacing for example are more than or equal to 1mm.
According to preferred embodiment of the present invention, the first above-mentioned spacing and the difference of second spacing for example are more than or equal to 10mm.
Based on above-mentioned purpose or other purposes, the present invention proposes a kind of multi-field vertical assigned LCD panel, it comprises an active component array base board, a subtend substrate and a liquid crystal layer, wherein active component array base board has a plurality of pixel cells, and the subtend substrate has and uses electrode layer altogether, and liquid crystal layer is to be disposed between active component array base board and the subtend substrate.Especially, the liquid crystal layer on each pixel cell marks off one first field group and one second field group, and the first field group and the second field group include the field of all kinds.In addition, each pixel cell comprises an active member and a pixel electrode, and wherein pixel electrode and active member electrically connect.In addition, pixel electrode has a plurality of no jagged edges slits (non-jagged slit) and a plurality of jagged edges slits (jagged slit), wherein the position of these no jagged edges slits is the positions that correspond to the first field group, and the position of these jagged edges slits is the positions that correspond to the second field group.
According to preferred embodiment of the present invention, above-mentioned active member for example is a thin film transistor (TFT).
Based on above-mentioned purpose or other purposes, the present invention proposes a kind of multi-field vertical assigned LCD panel, it comprises an active component array base board, a subtend substrate and a liquid crystal layer, wherein active component array base board has a plurality of pixel cells, and the subtend substrate has and uses electrode layer altogether, and liquid crystal layer is disposed between active component array base board and the subtend substrate.Especially, the liquid crystal layer on each pixel cell marks off one first field group and one second field group, and the first field group and the second field group include the field of all kinds.In addition, the driving voltage of the first field group is different to the characteristic of penetrance with the driving voltage of the second field group to the characteristic of penetrance.
Based on above-mentioned, multiple domain vertical orientation type liquid crystal display of the present invention marks off electric field normal region and electric field relief regions on each pixel cell, and both all comprise the field (for example all comprising A, B, C and four kinds of fields of D) of all kinds, therefore brightness can be dwindled with the amplitude of variation that visual angle change produced, and shows image quality to improve.
State with other purposes, feature and advantage and can become apparent on the present invention for allowing, preferred embodiment cited below particularly, and conjunction with figs. is elaborated.
Description of drawings
Figure 1A is the diagrammatic cross-section according to the pixel cell of the present invention's first preferred embodiment.
Figure 1B is the circuit diagram according to the pixel cell of the present invention's first preferred embodiment.
Fig. 2 is the circuit diagram according to the pixel cell of the present invention's second preferred embodiment.
Fig. 2 A is the circuit diagram of pixel cell of the present invention.
Fig. 2 B is the circuit diagram of pixel cell of the present invention.
Fig. 3 is the diagrammatic cross-section according to the pixel cell of the present invention's the 3rd preferred embodiment.
Fig. 4 is the diagrammatic cross-section according to the pixel cell of the present invention's the 4th preferred embodiment.
Fig. 5 A is the diagrammatic cross-section according to the pixel cell of the present invention's the 5th preferred embodiment.
Fig. 5 B is the voltage-penetrance curve map under different spacing.
Fig. 6 A is the schematic top plan view according to the pixel cell of the present invention's the 6th preferred embodiment.
Fig. 6 B is the curve map of voltage-penetrance of the slit of different kenels.
Fig. 7 A is the diagrammatic cross-section according to the pixel cell of the present invention's the 7th preferred embodiment.
Fig. 7 B is the circuit diagram according to the pixel cell of the present invention's the 7th preferred embodiment.
Fig. 8 is the circuit diagram of the pixel cell of eighth embodiment of the invention.
Embodiment
Produce the amplitude that brightness changes in order to dwindle existing multiple domain vertical orientation type liquid crystal display because of the visual angle changes, the present invention proposes a kind of multi-field vertical assigned LCD panel.The present invention is divided into a plurality of fields group on each pixel cell of active component array base board, dwindle the effect that brightness changes to reach.For example, be divided into one first field group and one second field group on each pixel cell, wherein the first field group and the second field group include the field (for example all comprising A, B, C and four kinds of fields of D) of all kinds.
Generally speaking, when driving display panels, driving voltage is will import in the pixel electrode of each pixel cell via data wiring, so provides the effective voltage of the liquid crystal layer to each pixel cell identical.It should be noted that the present invention is at the effective voltage inequality that the liquid crystal layer to each field group is provided under the identical driving voltage of input.Because the effective voltage inequality of the liquid crystal layer to each field group is provided, therefore the penetrance inequality of the liquid crystal layer above the different field group changes and the situation of rapid variation with the visual angle to improve brightness.Following narration is the relevant example that how to make effective voltage inequality that the liquid crystal layer to each field group is provided.
[first embodiment]
Figure 1A is the diagrammatic cross-section according to the pixel cell of the present invention's first preferred embodiment, and Figure 1B is the circuit diagram according to the pixel cell of the present invention's first preferred embodiment.Please be simultaneously with reference to Figure 1A and Figure 1B, multi-field vertical assigned LCD panel comprises an active component array base board 1300, a subtend substrate 1100 and a liquid crystal layer 1200, and wherein liquid crystal layer 1200 is disposed between active component array base board 1300 and the subtend substrate 1100.In addition, subtend substrate 1100 comprises one first substrate 1110 and is disposed at first substrate, the 1110 lip-deep electrode layers 1120 of using altogether that wherein common electrode layer 1120 is towards active component array base board 1300.
Active component array base board 1300 has plurality of scanning wirings 1314, many data wirings 1312 and a plurality of pixel cells 100, and wherein pixel cell 100 is by the scan wiring 1314 and data wiring 1312 controls (shown in Figure 1B) of correspondence.In addition, pixel cell 100 is disposed on one second substrate 1310, and pixel cell 100 comprises an active member 1316 (shown in Figure 1B), one first pixel electrode 1330a, one second pixel electrode 1330b and a metal level 1312a.In addition, active member 1316 for example is thin film transistor (TFT) or other three end points active members.Especially, metal level 1312a and data wiring 1312 for example are to form simultaneously.
Specifically, active member is disposed on second substrate 1310 (not shown), and insulation course 1322 is by extending out in the active member and be covered on second substrate 1310, and wherein insulation course 1322 for example is a gate insulator.In addition, metal level 1312a is disposed on the insulation course 1322, and insulation course 1324 covering metal level 1312a and insulation courses 1322, and wherein insulation course 1324 for example is a protective seam.In a preferred embodiment, the position of the position of metal level 1312a and shared distribution 1314a for example is overlapping.In other words, metal level 1312a is positioned at shared distribution 1314a top.
It should be noted that, the first pixel electrode 1330a and the second pixel electrode 1330b are disposed at respectively on the insulation course 1324, wherein the first pixel electrode 1330a and active member 1316 electrically connect, and the position of the first pixel electrode 1330a is the position that corresponds to the first field group I.In addition, the second pixel electrode 1330b and metal level 1312a are coupled into an electric capacity 1318, and the position of the second pixel electrode 1330b is the position that corresponds to the second field group II.The first field group I and the second field group II all include a plurality of fields, are generally the field of four different LCD alignment.Especially, the overlapping area of the second pixel electrode 1330b and metal level 1312a puts on decision the effective voltage of the liquid crystal layer 1200 of second pixel electrode 1330b top.
Simplify, in single pixel cell 100, because the first pixel electrode 1330a is direct and active member 1316 electrically connects, and the second pixel electrode 1330b electrically connects via electric capacity 1318 and active member 1316.Therefore in other words, the voltage inequality of the second pixel electrode 1330b and the first pixel electrode 1330a puts on the effective voltage inequality of the liquid crystal layer 1200 on the first field group I and the second field group II.Specifically, when a specific driving voltage is imported pixel cells via data wiring 1312, the voltage of the first pixel electrode 1330a gained is big than the voltage of the second pixel electrode 1330b gained, thereby the effective voltage that puts at the liquid crystal molecule 1210a on the first field group I is greater than the effective voltage that puts on the liquid crystal molecule 1210b on the second field group II, cause the liquid crystal molecule inclination angle of the first field group I different with the liquid crystal molecule inclination angle of the second field group II, during therefore with visual angle change, brightness changes and can dwindle because of the mutual compensation of the first field group I and the second field group II.
What deserves to be mentioned is, present embodiment is by a plurality of orientation thrusts 1130 of configuration on the common electrode layer 1120 of subtend substrate 1100, and on the second pixel electrode 1330b of active component array base board 1300 and the first pixel electrode 1330a a plurality of orientation thrusts 1340 of configuration so that the liquid crystal molecules in the liquid crystal layer 1200 become multiple domain to arrange.
Yet in another embodiment, the method that makes liquid crystal layer 1200 interior liquid crystal molecules become multiple domain to arrange for example is to form slit (slit) on common electrode layer 1120, the first pixel electrode 1330a and the second pixel electrode 1330b.In another embodiment, the method that makes liquid crystal molecules in the liquid crystal layer 1200 become multiple domain to arrange for example be for example common electrode layer 1120 form orientation thrusts and slit one of them, and on the first pixel electrode 1330a and the second pixel electrode 1330b formation orientation thrust and slit one of them.
[second embodiment]
Fig. 2 is the circuit diagram according to the pixel cell of the present invention's second preferred embodiment.Please refer to Fig. 2, the content of Fig. 2 is similar to the content of Figure 1B, and its difference is: in the pixel cell 200 of second embodiment, the second pixel electrode 2330b electrically connects via resistive element 2318 and active member 1316.It should be noted that the circuit symbol shown in the label 2318 is a transistor, but label 2318 is also represented the circuit symbol of resistor or other and can be produced the circuit symbol of the element of voltage drop.In addition, direct and active member 1316 electric connections of the first pixel electrode 2330a.
Described as first embodiment, the first pixel electrode 2330a is the position that corresponds to the first field group I, and the second pixel electrode 2330b is the position that corresponds to the second field group II, therefore puts on the effective voltage inequality (shown in similar Figure 1A) of the liquid crystal layer 1200 on the first field group I and the second field group II.Especially, the pressure drop that produced of resistive element 2318 puts on decision the effective voltage (shown in similar Figure 1A) of the liquid crystal layer 1200 on the second field group II.
From the above, by first embodiment and second embodiment as can be known, first pixel electrode is the position that corresponds to the first field group, and second pixel electrode is the position that corresponds to the second field group.In addition, the direct and active member electric connection of first pixel electrode, and second pixel electrode is to be electrically connected to active member via electric capacity or resistive element, therefore puts on the effective voltage inequality of the liquid crystal layer on the first field group and the second field group.
[variation one of second embodiment]
Fig. 2 A is the circuit diagram of pixel cell of the present invention.Please refer to Fig. 2 A, the present embodiment and second embodiment are very similar, and wherein both main difference parts are: shown in the label 2318 is the connected mode of transistor gate.Can know by Fig. 2 A and to learn that shown in the label 2318 is the source electrode that transistor gate is electrically connected to active member 1316.So, after scan wiring 1314 was opened active member 1316, data wiring 1312 can be opened transistor and the input voltage signal shown in the label 2318.
What merit attention is, the voltage signal that data wiring 1312 is exported can change along with the different picture frame time, and this can cause the transistorized channel sized shown in the label 2318 also can to change because of different voltage signals.Therefore, the transistor shown in the label 2318 can be considered a variable resistor.And the pressure drop that this variable resistor produced can make first pixel electrode 2330a (being positioned at the first field group I) and the suffered voltage inequality of the second pixel electrode 2330b (being positioned at the second field group II).In other words, putting on the effective voltage of the liquid crystal layer on the first field group I and the second field group II also can inequality.
[variation two of second embodiment]
Please refer to Fig. 2 B, it is the circuit diagram of pixel cell.The present embodiment and second embodiment are very similar, and wherein both main difference parts are: the pixel cell of present embodiment also comprises a shared distribution 2314a, and this shared distribution 2314a is electrically connected to the transistorized grid shown in the label 2318.Generally speaking, shared distribution 2314a can be electrically connected to a reference voltage source, and this can make the transistor shown in the label 2318 be in the state of unlatching always.And the transistor shown in the label 2318 can be considered as a resistance herein, therefore present embodiment can be by the pressure drop that this resistance produced, and then makes first pixel electrode 2330a (being positioned at the first field group) and the suffered voltage inequality of the second pixel electrode 2330b (being positioned at the second field group II).
In addition, the pixel cell of present embodiment also can comprise a reservior capacitor Cs, and it is electrically connected between the shared distribution 2314a and first active member 1316.This reservior capacitor Cs can be arranged in the first field group I or the second field group II, and reservior capacitor Cs also can be arranged in the first field group I and the second field group II simultaneously certainly.
[the 3rd embodiment]
Fig. 3 is the diagrammatic cross-section according to the pixel cell of the present invention's the 3rd preferred embodiment.Please refer to Fig. 3, the 3rd embodiment is similar to first embodiment, and its difference is: the pixel electrode 3320 of the 3rd embodiment is not cut apart, and disposes dielectric layer 3330 on the pixel electrode 3320 of the position that corresponds to the second field group II.More specifically, compared to pixel electrode 3320, dielectric layer 3330 has higher dielectric constant, therefore puts on locational liquid crystal layer 1200 and the effective voltage inequality that puts at the locational liquid crystal layer 1200 of the first field group I at the second field group II.
From the above, the material of dielectric layer 3330 for example is resin material or other dielectric materials, and pixel electrode 3320 also electrically connects with active member.Especially, the specific inductive capacity of dielectric layer 3330 and thickness put on decision the effective voltage of the liquid crystal layer 1200 on the second field group II.
What deserves to be mentioned is that present embodiment does not limit and uses orientation thrust 1130 and 1340 so that the liquid crystal molecule in the liquid crystal layer 1200 becomes multiple domain to arrange.In a preferred embodiment, the method that makes the liquid crystal molecule in the liquid crystal layer 1200 become multiple domain to arrange for example is to form slit simultaneously on active component array base board 1300 and subtend substrate 1100.In another preferred embodiment, on active component array base board 1300 and subtend substrate 1100, form orientation thrust and slit.
[the 4th embodiment]
Fig. 4 is the diagrammatic cross-section according to the pixel cell of the present invention's the 4th preferred embodiment.Please refer to Fig. 4, the 4th embodiment is similar to the 3rd embodiment, they are different be in: pixel electrode 4320 has a plurality of slits 4322, and the position of these slits 4322 is the positions that correspond to the second field group II.In addition, on pixel electrode 4320, also dispose orientation thrust 1340, and the position of orientation thrust 1340 is the positions that correspond to the first field group I.In other words, present embodiment is to form orientation thrust 1340 and slit 4322 on active component array base board 1300 simultaneously, so that it is different to the characteristic of penetrance to put on the driving voltage of the liquid crystal layer 1200 on the first field group I and the second field group II, therefore reach the identical voltage of input but can obtain different liquid crystal molecule inclination angles with the second field group II, as shown in Figure 4 at the first field group I.So can two field groups can compensate the luminance difference that cause at the visual angle mutually, improve the problem of colour cast.
It should be noted that, present embodiment also can form slit and orientation thrust 1130 simultaneously on subtend substrate 1100, and on active component array base board 1300, form orientation thrust 1340, so that put on the characteristic inequality of the driving voltage of the liquid crystal layer 1200 on the first field group I and the second field group II to penetrance.In addition, in the present embodiment, orientation thrust 1340,1130 makes the liquid crystal molecule in the liquid crystal layer 1200 become multiple domain to arrange with the combination of slit 4322.Yet the mode that makes liquid crystal molecule become multiple domain to arrange is not limited thereto kind of a combination, for example forms slit to replace orientation thrust 1130 on the common electrode layer 1120 of subtend substrate 1100.
[the 5th embodiment]
Fig. 5 A is the diagrammatic cross-section according to the pixel cell of the present invention's the 5th preferred embodiment, and Fig. 5 B is driving voltage-penetrance curve (VT curve) figure under different spacing.Please earlier with reference to Fig. 5 A, pixel electrode 5320 has a plurality of slits 5322 and 5324, and pixel electrode 5320 electrically connects with active member.In addition, a plurality of orientation thrusts 1130 of configuration on subtend substrate 1100, and orientation thrust 1130 makes the liquid crystal molecule in the liquid crystal layer 1200 become multiple domain to arrange with the combination of slit 5322 and 5324.
Especially, each orientation thrust 1130 is kept one first space D 1 and one second space D 2 with the slit 5324 of its both sides and 5322 minor increment, and wherein first space D 1 is greater than second space D 2.In addition, the zone between the nearest slit 5324 and 5322 of each orientation thrust 1130 and its both sides is the position that corresponds to the first field group I and the second field group II respectively.
Because orientation thrust 1130 is unequal with the minor increment of slit 5324 and 5322, so liquid crystal molecule 1210a is different with the anglec of rotation after 1210b is subjected to electric field action, imports identical voltage and produces different penetrances to reach.
Please refer to Fig. 5 B, abscissa is a driving voltage, and ordinate is a penetrance.Wherein experiment parameter is respectively 15 microns of solid line, 20 microns and 25 microns of dotted line of dotted line.What deserves to be mentioned is that so-called 15 microns are meant that first space D 1 and second space D 2 are 15 microns.
By Fig. 5 B as can be known, spacing wide more under same driving voltage penetrance also just high more.In other words, by the collocation of first space D 1 and second space D 2, after being subjected to electric field action, will have the different anglecs of rotation with locational liquid crystal molecule 1210b at the second field group II at the locational liquid crystal molecule 1210a of the first field group I.In other words, the driving voltage of the liquid crystal layer 1200 on the first field group I and the second field group II is to the characteristic inequality of penetrance.The difference of its first space D 1 and second space D 2 is big more, and then its driving voltage-penetrance curve difference is big more, is preferably to differ by more than or equal more than the 1mm, is more preferred to differ by more than or equal more than the 10mm.What deserves to be mentioned is, present embodiment is the configuration first orientation member (orientation thrust 1130) on subtend substrate 1100, and the configuration second orientation member (slit 5324 and 5322) on active component array base board 1300, so that the liquid crystal molecule in the liquid crystal layer 1200 becomes multiple domain to arrange.Yet present embodiment also can have different designs.
For example, the first orientation member is a slit, and the second orientation member is slit 5324 and 5322.Perhaps, the first orientation member is an orientation thrust 1130, and the second orientation member is the orientation thrust.Perhaps, the first orientation member is a slit, and the second orientation member is the orientation thrust.
[the 6th embodiment]
Fig. 6 A is the schematic top plan view according to the pixel cell of the present invention's the 6th preferred embodiment, and Fig. 6 B is the curve map of driving voltage-penetrance of the slit of different kenels.Please refer to Fig. 6 A, pixel cell 600 comprises active member 1316 and pixel electrode 6320, and wherein pixel electrode 6320 electrically connects with active member 1316.In addition, pixel electrode 6320 has a plurality of no jagged edges slits 6322 and a plurality of jagged edges slits 6324, wherein the position of these no jagged edges slits 6322 is the positions that correspond to the first field group I, and the position of these jagged edges slits 6324 is the positions that correspond to the second field group II.
Please be simultaneously with reference to Fig. 6 B, abscissa is a driving voltage, and ordinate is normalized penetrance number percent (normalized transmittance percentage).In addition, on behalf of slit, solid line have no jagged edges, and on behalf of slit, dotted line have jagged edges.As shown in Figure 6, under same driving voltage, use the multi-field vertical assigned LCD panel of no jagged edges slit to have preferable penetrance.In other words, provide the characteristic inequality of the driving voltage of the liquid crystal layer to the first field group I and the second field group II to penetrance.
[the 7th embodiment]
Fig. 7 A is the diagrammatic cross-section according to the pixel cell of the present invention's the 7th preferred embodiment, and Fig. 7 B is the circuit diagram according to the pixel cell of the present invention's the 7th preferred embodiment.Please be simultaneously with reference to Fig. 7 A and Fig. 7 B, multi-field vertical assigned LCD panel comprises a subtend substrate 1100, a liquid crystal layer 1200 and an active component array base board 1300, and wherein liquid crystal layer 1200 is disposed between active component array base board 1300 and the subtend substrate 1100.In addition, subtend substrate 1100 comprises one first substrate 1110 and is disposed at first substrate, the 1110 lip-deep electrode layers 1120 of using altogether that wherein common electrode layer 1120 is towards active component array base board 1300.
Active component array base board 1300 has many data wirings 1312, plurality of scanning wirings 1314 and a plurality of pixel cells 700, and wherein pixel cell 700 is by the data wiring 1312 and scan wiring 1314 controls (shown in Fig. 7 B) of correspondence.In addition, pixel cell 700 is disposed on one second substrate 1310, and pixel cell 700 comprises one first active member 1316a, one second active member 1316b, one the 3rd active member 1316c, one first pixel electrode 1331a, one second pixel electrode 1331b and a capacitor 1319 (shown in Fig. 7 B).The first above-mentioned active member 1316a, the second active member 1316b, the 3rd active member 1316c for example are thin film transistor (TFT) or other three end points active members.
In more detail, the first active member 1316a and the first pixel electrode 1331a electrically connect, and the position of the first pixel electrode 1331a is the position (shown in Fig. 7 A) that corresponds to the first field group I, and the first active member 1316a electrically connects by its drain electrode 1312a and the first pixel electrode 1331a.In addition, the second active member 1316b and the second pixel electrode 1331b electrically connect, and the position of the second pixel electrode 1331b is the position (shown in Fig. 7 A) that corresponds to the second field group II, and the second active member 1316b for example electrically connects by its drain electrode 1312b and the second pixel electrode 1331b.What merit attention is, aforesaid drain electrode 1312a and 1312b form simultaneously with data wiring 1312, and the grid 1312b of the grid 1312a of the first active member 1316a and the second active member 1316b electrically connects with scan wiring 1314 respectively.
Please refer to Fig. 7 B, the first active member 1316a and the second active member 1316b and pixel cell 700 pairing data wirings 1312 electrically connect with scan wiring 1314, and the 3rd active member 1316c and next bar scan wiring 1315 electrically connect, and capacitor 1319 electrically connects by the 3rd active member 1316c and the second pixel electrode 1331b.Particularly, the grid of the 3rd active member 1316c is to electrically connect with next bar scan wiring 1315, so the 3rd active member 1316c can be opened or close to scan wiring 1315.In addition, the source electrode of the 3rd active member 1316c is and the second pixel electrode 1331b electrically connects, and the drain electrode of the 3rd active member 1316c to be one of them electrode with capacitor 1319 electrically connect.
In above-mentioned framework, the first active member 1316a and the second active member 1316b are after being driven simultaneously by data wiring 1312 and scan wiring 1314, and this moment, voltage V1 was identical with V2.Yet after next bar scan wiring 1315 was opened driving the 3rd active member 1316c, capacitor 1319 can cause voltage V2 to descend.At this moment, the first active member 1316a and the second active member 1316b are closing state.Make by this mode and to put on the characteristic inequality of the driving voltage of the liquid crystal layer 1200 on the first field group I and the second field group II penetrance.
Above-mentioned capacitor 1319 comprises one first electrode 1319a and one second electrode 1319b, wherein the second electrode 1319b is disposed at first electrode 1319a below, and the material of the first electrode 1319a, the first pixel electrode 1331a and the second pixel electrode 1331b is identical, and the second electrode 1319b is identical with the material of data wiring 1312.
[the 8th embodiment]
Fig. 8 is the circuit diagram of the pixel cell of eighth embodiment of the invention.Please refer to Fig. 8, the pixel cell 800 of present embodiment comprises one first active member 1316a, one first pixel electrode 1331a, one second active member 1316b and one second pixel electrode 1331b.Wherein, the first active member 1316a and pixel cell 800 pairing scan wirings 1314 electrically connect, and the first pixel electrode 1331a and first active member 1316a electric connection.
In addition, the position of the first pixel electrode 1331a corresponds to the position of the first field group I.Second above-mentioned active member 1316b and pixel cell 800 pairing data wirings 1312 and next bar scan wiring 1314 (as the n+1 bar that is indicated among Fig. 9) electrically connect, and the second active member 1316b is suitable for being opened or closing by next bar scan wiring 1314 (as the n+1 bar that is indicated among Fig. 9).In addition, the second pixel electrode 1331b is electrically connected between the second active member 1316b and the first active member 1316a, and the second pixel electrode 1331b is the position that corresponds to the second field group II.
Particularly, when n bar scan wiring 1314 is opened the first active member 1316a, signal voltage in k-1 the picture frame time that the second pixel electrode 1331b is kept can write the first pixel electrode 1331a, and makes the first pixel electrode 1331a (being positioned at the first field group I) obtain voltage V1.Next, when n+1 bar scan wiring 1314 is opened the second active member 1316b, data wiring 1312 can write the signal voltage of k picture frame time to the second pixel electrode 1331b, and makes the second pixel electrode 1331b (being positioned at the second field group II) obtain voltage V2.The first active member 1316a that it should be noted that this moment closes.
So, corresponding to the first field group I and the second field group II and the suffered effective voltage inequality of liquid crystal that disposes.In other words, the liquid crystal dump angle that is positioned at this two field (the first field group I and the second field group II) can be inequality, and penetrance also can be different.Thus, this two fields group (I and II) has complementary effect, and then the user is provided wider visual angle.
It should be noted that the first field group I and the shared area ratio of the second field group II, can improve the display effect of multi-field vertical assigned LCD panel of the present invention by the change the various embodiments described above.
In sum, multi-field vertical assigned LCD panel of the present invention has following advantage at least:
One, compared to prior art, it is identical and that the inclination angle is different is multi-field that multi-field vertical assigned LCD panel of the present invention is designed liquid crystal alignment, can dwindle so that change the amplitude that the brightness that produced changes with the visual angle, and then improve display effect.
Two, need not increase extra light shield and just can produce multi-field vertical assigned LCD panel of the present invention, and multi-field vertical assigned LCD panel of the present invention is compatible with existing manufacturing equipment.
Though the present invention discloses as above with preferred embodiment; yet it is not in order to limit the present invention; any person skilled in the art person without departing from the spirit and scope of the present invention; when the change that can make all equivalences or replacement, so protection scope of the present invention is when looking accompanying being as the criterion that the application's claim scope defined.
Claims (5)
1. a multi-field vertical assigned LCD panel is characterized in that, this panel comprises:
One active component array base board, this active component array base board has most pixel cells, most bar scan wiring and most bar data wirings, each these pixel cell is by these scan wirings of correspondence one of them and one of them control of these data wirings, and each these pixel cell comprises:
One first active member, pairing this scan wiring of this first active member and this pixel cell and this data wiring electrically connect;
One second active member, pairing this scan wiring of this second active member and this pixel cell and this data wiring electrically connect;
One first pixel electrode electrically connects with this first active member;
One second pixel electrode electrically connects with this second active member;
One the 3rd active member, the 3rd active member and next bar scan wiring and this second pixel electrode electrically connect; And
One capacitor, this capacitor electrically connects by the 3rd active member and this second pixel electrode;
One subtend substrate, this subtend substrate have uses electrode layer altogether towards this active component array base board; And
One liquid crystal layer, be disposed between this active component array base board and this subtend substrate, this liquid crystal layer on each these pixel cell is to be divided into most field groups, these field groups comprise one first field group and one second field group, the position of this first field group corresponds to the position of this first pixel electrode, the position of this second field group corresponds to the position of this second pixel electrode, each these field group comprises the field of all kinds, and the effective voltage inequality of this liquid crystal layer to each these field group is provided.
2. multi-field vertical assigned LCD panel as claimed in claim 1 is characterized in that this capacitor comprises:
One first electrode; And
One second electrode is disposed at this first electrode below, and wherein the material of this first electrode, this first pixel electrode and this second pixel electrode is identical, and this second electrode is identical with the material of this data wiring.
3. multi-field vertical assigned LCD panel as claimed in claim 1 is characterized in that this first active member is a thin film transistor (TFT).
4. multi-field vertical assigned LCD panel as claimed in claim 1 is characterized in that this second active member is a thin film transistor (TFT).
5. multi-field vertical assigned LCD panel as claimed in claim 1 is characterized in that the 3rd active member is a thin film transistor (TFT).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005101271622A CN1967359B (en) | 2005-11-16 | 2005-11-16 | Multi-field vertical assigned LCD panel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005101271622A CN1967359B (en) | 2005-11-16 | 2005-11-16 | Multi-field vertical assigned LCD panel |
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| CN1967359A CN1967359A (en) | 2007-05-23 |
| CN1967359B true CN1967359B (en) | 2011-03-30 |
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| CN102081269A (en) * | 2010-11-16 | 2011-06-01 | 华映视讯（吴江）有限公司 | Transistor array substrate |
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