CN103733130B - Liquid crystal display - Google Patents
Liquid crystal display Download PDFInfo
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- CN103733130B CN103733130B CN201280038824.7A CN201280038824A CN103733130B CN 103733130 B CN103733130 B CN 103733130B CN 201280038824 A CN201280038824 A CN 201280038824A CN 103733130 B CN103733130 B CN 103733130B
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
- G02F1/134363—Electrodes characterised by their geometrical arrangement for applying an electric field parallel to the substrate, i.e. in-plane switching [IPS]
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
- G02F1/134372—Electrodes characterised by their geometrical arrangement for fringe field switching [FFS] where the common electrode is not patterned
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- General Physics & Mathematics (AREA)
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Abstract
The invention provides the liquid crystal display that can suppress the unfavorable condition because process deviation causes and improve display performance.The invention provides a kind of liquid crystal display, its the second electrode comprising the first electrode, be located at the dielectric film on above-mentioned first electrode and be located on above-mentioned dielectric film, above-mentioned second electrode is formed with the multiple seams be located in pixel, above-mentioned first electrode is relative with above-mentioned multiple seam, above-mentioned multiple seam is parallel to each other, above-mentioned multiple seam comprises respectively: the first straight line portion, and it extends at first direction; Second straight line portion, it is connected with one end of above-mentioned first straight line portion, extends in second direction; And bend, it is bending in above-mentioned first straight line portion and the above-mentioned second interconnective region of straight line portion, the other end of above-mentioned multiple first straight line portion is positioned on identical straight line, when by be positioned in above-mentioned pixel in above-mentioned multiple seam one end seam be the first seam time, the adjacent seam of above-mentioned first seam bends close to the above-mentioned first mode of stitching with the first straight line portion and the second straight line portion, from above-mentioned first seam more away from seam, the length of above-mentioned first straight line portion is shorter.
Description
Technical field
The present invention relates to liquid crystal display.In more detail, the liquid crystal display of the liquid crystal display being suitable for lateral electric field type is related to.
Background technology
The aspect of the high image quality using the active matrix-type liquid crystal display device of the active component representated by thin film transistor (TFT) (TFT) to compare favourably from characteristic sum and the cathode-ray tube (CRT) of thin, light weight, is widely spread as display device.The display mode of known such liquid crystal display is roughly divided into 2 kinds of display modes below.
One is vertical Electric Field Mode.In this approach, utilize the electric field driven liquid crystal layer in the direction substantially vertical with real estate, the light inciding liquid crystal layer is modulated and shows.As the liquid crystal mode of vertical Electric Field Mode, there will be a known TN(TwistedNematic: twisted nematic) pattern, MVA(Multi-domainVerticalAlignment: multi-domain vertical alignment) pattern etc.
Another kind is lateral electric field type.In this approach, the electric field driven liquid crystal layer in the direction almost parallel with real estate is utilized.As the liquid crystal mode of lateral electric field type, there will be a known IPS(In-planeSwitching: in-plane switching) pattern, FFS(FringeFieldSwitching: fringe field switching) pattern etc.
As the concrete example of IPS pattern, disclose following liquid crystal display (for example, referring to patent documentation 1.), such as, this liquid crystal display possesses: many gate wirings and data wiring, and it defines the unit picture element dividing into the 1st, the 2nd, the 3rd region mutually orthogonal on the 1st substrate; Thin film transistor (TFT), it is formed in the intersection place of gate wirings and data wiring; Share distribution, it is parallel with gate wirings; Common electrode, it is bent into the 1st angle from shared distribution branch in the 1st region, is bent into the 2nd angle in the 2nd region, is bent into the 3rd angle in the 3rd region; Pixel electrode, the drain electrode of itself and thin film transistor (TFT) links, and is formed abreast with common electrode; And liquid crystal layer, it is formed between the 1st substrate and the 2nd substrate relative with it.
The display panels of the lateral electric field type that the concrete example as FFS mode discloses and gap-like opening is set to " く " shape, link the gap-like opening of different directions is (for example, referring to patent documentation 2.）。In addition, liquid crystal display (such as, patent documentation 3 reference possessing electrode is disclosed.), above-mentioned electrode is formed: the 1st seam, and it clips the line part extended in the 1st direction and extends to the 2nd direction different from the 1st direction; And the 2nd stitches, it extends to the 3rd direction different with the 2nd direction from the 1st direction.
prior art document
patent documentation
Patent documentation 1: JP 2007-11259 publication
Patent documentation 2: JP 2010-102284 publication
Patent documentation 3: JP 2010-256547 publication
Summary of the invention
the problem that invention will solve
The liquid crystal display of lateral electric field type possesses the electrode (such as pixel electrode) being formed with the multiple seams be parallel to each other, and uses this electrode to produce transverse electric field.In addition, this panel transmissivity according to the width (L) of electrode (linear parts) between the width (S) of seam, seam and they and (S+L) and change.Generally, when L and S sum diminishes, panel transmissivity uprises.But having restriction in manufacturing process, L and S therefore can not be made to be less than setting, there is limitation in the actual panel transmissivity obtained.This is due to reason below.Be because: the minimum widith of the minimum widith of the pattern that in the photo-mask process when forming seam, the photomask that uses can be formed and the pattern that in fact utilizes the device used in photo-mask process to be formed is restricted.
Below, with reference to the liquid crystal display of the FFS mode of the manner of comparison 1 of the present inventor's research, the problem of existing FFS mode is described.Figure 10 is the schematic top plan view of the active-matrix substrate of the liquid crystal display of the FFS mode of manner of comparison 1.In addition, in Fig. 9 of patent documentation 2 and Fig. 6 of patent documentation 3, the mode similar with manner of comparison 1 is illustrated.
The liquid crystal display of manner of comparison 1 possesses active-matrix substrate (array base palte) 510, the opposing substrate relative with array base palte (not shown) and is located at the liquid crystal layer (not shown) of the horizontally oriented type between two substrates.As shown in Figure 10, array base palte 510 comprises data bus 513, grid bus 551, TFT553, common electrode 515, the pixel electrode 517 that is formed at the dielectric film (not shown) on common electrode 515 and is formed on this dielectric film.The initial orientation direction of liquid crystal molecule, direction of orientation when namely not applying voltage are set as the above-below direction of Figure 10.
Each pixel electrode 517 is formed with the multiple seams 530 be parallel to each other, and common electrode 515 is relative with seam 530.By controlling the voltage applied between pixel electrode 517 and common electrode 515, controlling the orientation of liquid crystal molecule, being control to rotate in more detail.Pixel electrode 517 comprises multiple linear parts 518 of being parallel to each other and by interconnective for linear parts coupling part 519,520.
Seam 530 has laterally zygomorphic shape, and seam 530 comprises respectively: straight line portion (principal part) 531,532; Principal part 531,532 is interconnected, 2 straight line portioies is connected to V shape and the part (V word section) 533 formed; And the linear parts (secondary portion) 534,535 be located at respectively between principal part 531,532 and coupling part 519,520.Like this, seam 530 bends respectively between secondary portion 534 and principal part 531, between principal part 531 and V word section 533, between principal part 532 and V word section 533 and between principal part 532 and secondary portion 535, V word section 533 also comprises 1 bend, so seam 530 has 5 bends respectively.In addition, the angle formed relative to above-below direction in V word section 533 and secondary portion 534,535 sets be greater than principal part 531,532 itself.
V word section 533 and secondary portion 534,535 are auxiliary parts, and in the region comprising principal part 531,532, the orientation of most of liquid crystal molecule that liquid crystal layer comprises is controlled.Comprising the region of principal part 531 and comprising the region of principal part 532, the sense of rotation of liquid crystal molecule is contrary, and therefore, between two regions, the orientation of liquid crystal molecule is runed counter to.Therefore, the V word section 533 relatively large relative to the angle of above-below direction formation is set between two regions, the easy orientation of liquid crystal molecule between two regions thus.In addition, near coupling part 519, due to the electric field produced from coupling part 519, likely make the orientation disorder of liquid crystal molecule.Therefore, relative large secondary portion 534, the angle formed relative to above-below direction is set between coupling part 519 with principal part 531, the orientation disorder of liquid crystal molecule near coupling part 519 can be suppressed thus.For identical reason, be also provided with secondary portion 535.As above result is, from outer partial, pressure is applied (such as to the picture of liquid crystal display, picture is by finger presses), even if the disorder producing the local of the liquid crystal molecular orientation caused due to this pressure, the disorder of local that namely shows, these also can be made as soon as possible disorderlyly to restore.
But, the problem shown in below existing in manner of comparison 1.
Seam 530 be arrange in parallel to each other, mutually identical flat shape, therefore the width S in V word section 533 and secondary portion 534,535 is less than the width S of principal part 531,532.In addition, the width L of the linear parts 518 of pixel electrode 517 compared with forming the part of principal part 531,532 forming V word section 533, the part in secondary portion 534,535 attenuates.Therefore, from the view point of raising panel transmissivity, when L and S being reduced in technique the ultimate value be allowed in the region comprising principal part 531,532, comprising the region of V word section 533 and comprising in the region in secondary portion 534,535, L and S can exceed the ultimate value be allowed to.In this case, likely there are the various unfavorable conditions because the deviation of technique causes.Particularly, such as, there is deviation with the mode brightness of each panel sometimes, even or identical panel also to produce display uneven.As the reason that such unfavorable condition occurs, consider it is the wide variety etc. of alignment offset due to mask, pattern.
On the other hand, from the view point of the generation suppressing such unfavorable condition, when L and S being set in the region comprising V word section 533 and the region comprising secondary portion 534,535 in the scope being no more than the ultimate value be allowed to, in the region comprising principal part 531,532, L and S can become large, produces the decline of display performance, the reduction of such as panel transmissivity.
As mentioned above, in existing FFS mode, the unfavorable condition being difficult to suppression is caused due to the deviation of technique is set up with raising display performance simultaneously.
The present invention completes in view of above-mentioned present situation, its object is to provide the unfavorable condition that can suppress to cause due to process deviation and the liquid crystal display improving display performance.
for the scheme of dealing with problems
The liquid crystal display of the present inventor to the unfavorable condition that can suppress because process deviation causes and raising display performance has carried out various research discovery, and the multiple seams be parallel to each other are respectively equipped with: the first straight line portion, and it extends at first direction, second straight line portion, it is connected with one end of the first straight line portion, extends in second direction, and bend, it is bending in the first straight line portion and the interconnective region of the second straight line portion, the other end of multiple first straight line portion is configured on identical straight line, by be positioned in pixel in multiple seam one end seam be the first seam (wherein, the adjacent seam of the first seam bends close to the first mode of stitching with the first straight line portion and the second straight line portion), from first seam more away from seam, the length of the first straight line portion is shorter, L and S comprised in the region of the first straight line portion and the difference comprising L and S in the region of the second straight line portion can be reduced thus, even L and S such as comprising the region of the second straight line portion is the size close to the ultimate value be allowed to, also can prevent L and S in the region comprising the first straight line portion from exceeding the ultimate value be allowed to.Consequently, the pattern of the seam caused due to process deviation can be suppressed to change, in addition, can transmissivity be improved, thus can solve the problem ideally, thus reach the present invention.
That is, one aspect of the present invention is that following liquid crystal display is (hereinafter also referred to as liquid crystal display of the present invention.), it possesses: the second substrate that first substrate is relative with above-mentioned first substrate and the liquid crystal layer comprising liquid crystal molecule be located between above-mentioned first substrate and above-mentioned second substrate, above-mentioned first substrate comprises: the first electrode, the second electrode be located at the dielectric film on above-mentioned first electrode and be located on above-mentioned dielectric film, above-mentioned second electrode is formed with the multiple seams be located in pixel, above-mentioned first electrode is relative with above-mentioned multiple seam, above-mentioned multiple seam is parallel to each other, above-mentioned multiple seam comprises respectively: the first straight line portion, and it extends at first direction; Second straight line portion, it is connected with one end of above-mentioned first straight line portion, extends in second direction; And bend, it is bending in above-mentioned first straight line portion and the above-mentioned second interconnective region of straight line portion, the other end of above-mentioned multiple first straight line portion is positioned on identical straight line, when by be positioned in above-mentioned pixel in above-mentioned multiple seam one end seam be the first seam time, the adjacent seam of above-mentioned first seam bends close to the above-mentioned first mode of stitching with the first straight line portion and the second straight line portion, from above-mentioned first seam more away from seam, the length of above-mentioned first straight line portion is shorter.
As the formation of liquid crystal display of the present invention, as long as must form such inscape, then other inscape is not particularly limited.In addition, above-mentioned straight line is not concrete component, but imaginary line.
Preferred implementation in liquid crystal display of the present invention is shown below.Embodiment below also can suitably combine.
When the direction of orientation of above-mentioned liquid crystal molecule when not applying voltage is set to initial orientation direction, preferred above-mentioned first direction and above-mentioned second direction are different from above-mentioned initial orientation direction respectively.Thus, the orientation of liquid crystal molecule can more effectively be controlled.
The angle that preferred above-mentioned first direction and above-mentioned initial orientation direction are formed is greater than the angle of above-mentioned second direction and the formation of above-mentioned initial orientation direction, and above-mentioned first straight line portion is shorter than above-mentioned second straight line portion.Thus, the first straight line portion can be made as auxiliary part (secondary portion), the second straight line portion is played a role effectively as principal part.
The angle that preferred above-mentioned first direction and above-mentioned initial orientation direction are formed is 20 ~ 40 °, the angle that above-mentioned second direction and above-mentioned initial orientation direction are formed is 3 ~ 10 °, above-mentioned straight line is the first straight line, the above-mentioned crooked position of above-mentioned multiple seam is on the second identical straight line, and the angle that above-mentioned first straight line and above-mentioned second straight line are formed is 5 ~ 15 °.Thus, can effectively make the recovery of orientation disorder because pressing causes and the raising of transmissivity set up simultaneously.In addition, above-mentioned second straight line is not concrete component, but imaginary line.
Above-mentioned multiple seam can also comprise the 3rd straight line portion respectively, and above-mentioned 3rd straight line portion is connected with the above-mentioned other end of above-mentioned first straight line portion, and extend at third direction, above-mentioned first straight line portion and above-mentioned 3rd straight line portion are arranged to V shape.Which is suitable for the mode arranging V word section in the central authorities of pixel.
Preferably when the direction of orientation of above-mentioned liquid crystal molecule when not applying voltage is set to initial orientation direction, the angle that above-mentioned third direction and above-mentioned initial orientation direction are formed is 20 ~ 40 °, above-mentioned multiple seam also comprises respectively: the 4th straight line portion, its one end be not connected with above-mentioned first straight line portion being connected to above-mentioned 3rd straight line portion, extends in fourth direction; And second bend, it is bending in above-mentioned 3rd straight line portion and the above-mentioned 4th interconnective region of straight line portion, above-mentioned straight line is the first straight line, above-mentioned second crooked position of above-mentioned multiple seam is on the 3rd identical straight line, the angle that above-mentioned first straight line and above-mentioned 3rd straight line are formed is 5 ~ 15 °, and the angle that above-mentioned fourth direction and above-mentioned initial orientation direction are formed is 3 ~ 10 °.Thus, can effectively make the recovery of orientation disorder because pressing causes and the raising of transmissivity set up simultaneously.In addition, above-mentioned 3rd straight line is not concrete component, but imaginary line.
Also can be that above-mentioned second electrode comprises the linear parts of more than 3 adjacent with above-mentioned multiple seam and by interconnective for the linear parts of above-mentioned more than 3 connecting portion, above-mentioned first straight line portion is adjacent with above-mentioned connecting portion.Which is suitable for the mode being adjacent to arrange secondary portion with the coupling part of electrode.
invention effect
According to the present invention, the liquid crystal display that can suppress the unfavorable condition because process deviation causes and improve display performance can be realized.
Accompanying drawing explanation
Fig. 1 is the schematic top plan view of the active-matrix substrate of the liquid crystal display of the FFS mode of embodiment 1.
Fig. 2 is the schematic top plan view of the common electrode representing the active-matrix substrate being located at embodiment 1.
Fig. 3 is the schematic cross-section of the active-matrix substrate of the line A-A ' shown in Fig. 1.
Fig. 4 is the schematic top plan view near the V word section of the pixel electrode amplifying expression embodiment 1.
Fig. 5 is the schematic top plan view of the active-matrix substrate of the liquid crystal display of the FFS mode of embodiment 2.
Fig. 6 is the schematic top plan view near the secondary portion of the pixel electrode amplifying expression embodiment 2.
Fig. 7 is the schematic top plan view of the active-matrix substrate of the liquid crystal display of the FFS mode of embodiment 3.
Fig. 8 is the schematic top plan view of the active-matrix substrate of the liquid crystal display of the FFS mode of the variation of embodiment 3.
Fig. 9 is the schematic top plan view of the common electrode of the active-matrix substrate representing the variation being located at embodiment 3.
Figure 10 is the schematic top plan view of the active-matrix substrate of the liquid crystal display of the FFS mode of manner of comparison 1.
Embodiment
Enumerate embodiment below, with reference to accompanying drawing, the present invention is described in more detail, but the present invention is not limited only to these embodiments.
Refer to by adjacent 2 grid buss and adjacent 2 regions that data bus surrounds in this instructions what is called " pixel ".
In addition, when not mentioning especially, so-called width refers to the width in the direction orthogonal relative to length direction.
Embodiment below can be applied to the display device such as televisor, personal computer, portable phone, auto-navigation system, information display particularly.
Embodiment 1
Embodiment 1 is the liquid crystal display of the FFS mode of multidomain (2 farmland).
Fig. 1 is the schematic top plan view of the active-matrix substrate of the liquid crystal display of the FFS mode of embodiment 1.The liquid crystal display 110 of embodiment 1 possesses: the opposing substrate 70 that active-matrix substrate (array base palte) 10 is relative with substrate 10 and be located at the liquid crystal layer 80 of the horizontally oriented type between two substrates.As shown in figures 1 and 3, array base palte 10 comprises: insulated substrate 11, data bus 13, grid bus 51, gate insulating film 12, TFT53, the first dielectric film 14, second dielectric film 16a, common electrode 15, the pixel electrode 17 that is formed at the 3rd dielectric film 16b on common electrode 15 and is formed on the 3rd dielectric film 16b.The surface of liquid crystal layer 80 side of array base palte 10 is provided with horizontal alignment film (not shown).As shown in Figure 2, common electrode 15 is formed in the mode covering in fact viewing area.Pixel electrode 17 is formed with the multiple seams (opening of strip) 30 be parallel to each other, and common electrode 15 is relative with seam 30.The voltage applied between pixel electrode 17 and common electrode 15 is controlled, controls the orientation of liquid crystal molecule thus, control to rotate in more detail.The initial orientation direction of liquid crystal molecule, direction of orientation when namely not applying voltage are set as the above-below direction (direction of arrow in Fig. 1) of Fig. 1.Opposing substrate 70 comprises: insulated substrate 21, colored filter 23 and black matrix 22.The surface of liquid crystal layer 80 side of opposing substrate 70 is provided with horizontal alignment film (not shown).In addition, colored filter 23 and black matrix 22 also can not be located at opposing substrate 70 side, and are provided at active-matrix substrate 10 side.
The structure of the pixel electrode 17 in embodiment 1 is described in further detail.
Pixel electrode 17 comprise more than 3 that are parallel to each other linear parts 18 and by interconnective for linear parts 18 coupling part 19,20.
Seam 30 has laterally zygomorphic shape, and seam 30 comprises respectively: straight line portion (principal part) 31,32 and by principal part 31,32 interconnected, 2 straight line portioies 36,37 are connected to V shape and the part (V word section) 33 that formed.Principal part 31,32 is corresponding with above-mentioned second straight line portion, straight line portion 36,37 with above-mentioned first or the 3rd straight line portion corresponding.Like this, seam 30 is bending between principal part 31 and V word section 33 and between principal part 32 and V word section 33 respectively, and V word section 33 comprises 1 bend, so seam 30 has 3 bends respectively.In addition, as shown in Figure 4, the angle (a °) formed relative to above-below direction (the initial orientation direction of liquid crystal molecule) of V word section 33 sets be greater than the angle (b °) formed relative to above-below direction (the initial orientation direction of liquid crystal molecule) of principal part 31,32.V word section 33(straight line portion 36,37) be auxiliary part, in the region comprising principal part 31,32, the orientation of most of liquid crystal molecule that liquid crystal layer 80 comprises is controlled.By arranging V word section 33, more effectively can control the orientation of liquid crystal molecule, such as, pressure is applied partly (such as from outside to the picture of liquid crystal display 110, picture is by finger presses), even if the disorder producing the local of the orientation of liquid crystal molecule caused by this pressure, the disorder of local namely shown, these also can be made as soon as possible disorderlyly to restore.In addition, the part relative with seam 30 of data bus 13 is formed along seam 30.
And, when by be positioned in seam 30 Fig. 1 high order end seam be the first seam time, from the first seam more away from seam, the length of straight line portion 36,37 forming V word section 33 is shorter.First seam is the seam being positioned at one end in pixel, and the adjacent seam of the first seam bends close to the first mode of stitching with principal part 31 and straight line portion 36.In addition, the adjacent seam of the first seam bends close to the first mode of stitching with principal part 32 and straight line portion 37.Such as, from Fig. 1,3 μm, 4 μm, 5 μm and 6 μm rightmost, respectively are with the length of straight line portion 36 or the adjacent pixel electrode part of straight line portion 37.That is, as shown in Figure 4, at the central portion of pixel electrode 17, V word section 33 is formed in the mode diminished from left to right.The bend between each principal part 31 and V word section 33, i.e. one end of straight line portion 36 in seam 30 be positioned at identical the second imaginary line (with above-mentioned second or the 3rd straight line of line correspondences) on, the bend between each principal part 32 and V word section 33, i.e. one end of straight line portion 37 in seam 30 be positioned at identical the 3rd imaginary line (with above-mentioned second or the 3rd straight line of line correspondences) on, summit, the i.e. other end of straight line portion 36,37 of each V word section 33 in seam 30 are positioned on identical the first imaginary line (with the straight line of above-mentioned first line correspondences).First imaginary line and the second imaginary line form the angle (c °) of regulation.Equally, the first imaginary line and the 3rd imaginary line form the angle (c °) of regulation.From first seam more away from seam, the bend between principal part 31 and V word section 33 and the bend between principal part 32 and V word section 33 are more close to the first imaginary line.
By forming pixel electrode 17 like this, L and S that comprise in the region of principal part 31,32 can be reduced and comprise V word section 33(straight line portion 36,37) region in the difference of L and S, L with S in two regions also can be made in fact mutually identical.
On the other hand, in the liquid crystal display 510 of the manner of comparison 1 of existing FFS mode, as shown in Figure 10, between seam, electrode is all formed as roughly the same shape, and the angle c shown in Fig. 1 and Fig. 4 ° does not exist.
Now, as mentioned above, the width S in V word section 533 and secondary portion 534,535 is less than the width S of principal part 531,532.In addition, the width L of the linear parts 518 of pixel electrode 517 compared with forming the part of principal part 531,532 forming V word section 533, the part in secondary portion 534,535 attenuates.
Therefore, in the liquid crystal display 510 of manner of comparison 1, when will reduce the summation of width L and width S as far as possible, the summation needing to comprise width L in the region of V word section 533 and width S becomes the patten's design of the ultimate value be allowed to.Such as, the ultimate value be allowed to of width L and width S be respectively 2.5 μm and 4.0 μm (summation of width L and width S is 6.5 μm) time, when to make the width S of the width L of the electrode part of formation principal part 531,532 and principal part 531,532 become the patten's design of minimum value 2.5 μm and 4.0 μm respectively, the width forming the electrode of V word section 533 is 2.2 μm, the width S of V word section 533 is 3.4 μm of degree, is less than the ultimate value be allowed to.Consequently, when producing the process deviation of alignment offset etc. of photomask, the deviation (display is uneven) of the transmissivity in the deviation of the transmissivity between display panels or 1 display panels (viewing area) can be produced.Therefore, in the liquid crystal display 510 of manner of comparison 1, need in the region comprising V word section 533, width L and width S are set in be no more than the ultimate value be allowed to scope in, but when such look setting, in the region comprising principal part 531,532, width L and width S can become large, produce the decline of display performance, the reduction of such as panel transmissivity.
On the other hand, in the liquid crystal display 110 of embodiment 1, can reduce to comprise the width L in the region of principal part 31,32 and width S and comprise V word section 33(straight line portion 36,37) the width L in region and the difference of width S, therefore, even if L and S such as comprising the region of principal part becomes the size near tolerance limit value, also can prevent L and S in the region comprising V word section from exceeding tolerance limit value.Consequently, the pattern of the seam caused due to process deviation can be suppressed to change, in addition, can transmissivity be improved.Particularly, when by L with S comprised in the region of principal part 31,32 with comprise V word section 33(straight line portion 36,37) region in L with S be reduced in technique be allowed to ultimate value, be set as in fact mutually identical value, the liquid crystal display 110 of embodiment 1 transmissivity compared with the liquid crystal display 510 of the manner of comparison 1 shown in Figure 10 improves 4%.
The size of angle a ° and angle b ° is not particularly limited, and the liquid crystal display as multidomain can obtain suitable visual angle, produces and the angle of anti-pressing performance as long as be set as being inhibited to mistake.Particularly, optimized angle a ° is set as 20 ~ 40 °, and optimized angle b ° is set as 3 ~ 10 °.
In addition, the size of angle c ° is also not particularly limited, and the mode preferably becoming the minimum value that can manufacture with the summation of L and S on the whole at seam sets, and particularly, is preferably set to 5 ~ 15 °.
Above the structure of the pixel electrode 17 in embodiment 1 is illustrated.Below, other structure, the material of each component and manufacture method are described.
TFT53 is the on-off element possessing semiconductor layer 54, gate electrode 55a, source electrode 55b and drain electrode 55c.The gate electrode 55a of TFT53 is formed by drawing by a part for grid bus 51.The source electrode 55b of TFT53 is connected with semiconductor layer 54 respectively with drain electrode 55c.The drain electrode 55c of TFT53 is connected with pixel electrode 17 by contact hole 71.Gate electrode 55a and semiconductor layer 54 overlapped across gate insulating film 12.Source electrode 55b is connected with drain electrode 55c by semiconductor layer 54, the sweep signal being input to gate electrode 55a by grid bus 51 is utilized to carry out the adjustment of the magnitude of current flowing through semiconductor layer 54, the transmission of the data-signal that the order controlling press source electrode 55b, semiconductor layer 54, drain electrode 55c and pixel electrode 17 by data bus 13 inputs.
Common electrode 15 is provided to the shared signal remaining fixed value.As shown in Figure 2, common electrode 15 is independently formed at one side with the border of pixel.In common electrode 15, and be provided with opening in the region overlapping with the region that drain electrode 55c and pixel electrode 17 connect.
As the material of insulated substrate 11,21, the material that can suitably use glass, plastics etc. transparent.As the material of gate insulating film 12, first dielectric film 14, second dielectric film 16a and the 3rd dielectric film 16b, can suitably use the material that silicon nitride, monox, photosensitive acrylics etc. are transparent.Such as, plasma enhanced chemical vapor deposition (PlasmaEnhancedChemicalVaporDeposition:PECVD) method is utilized to make silicon nitride film film forming, utilize mould coating process (coating) method on silicon nitride film, make photosensitive acrylics's film film forming, form the first dielectric film 14, second dielectric film 16a and the 3rd dielectric film 16b thus.The hole arranged in dielectric film 14,16 and 16b to form contact site is formed by carrying out dry-etching (channel-etch).
Utilize sputtering method etc. to make the metals such as titanium, chromium, aluminium, molybdenum or their alloy with individual layer or multilayer film forming, then carry out patterning by photoetching process etc., various distribution and the electrode of grid bus 51, data bus 13 or formation TFT53 can be formed thus.Be formed at identical layer about these various distributions and electrode, use identical material respectively, can effectively manufacture thus.
The semiconductor layer 54 of TFT53 such as comprises high ohmic semiconductor layer and low resistance semiconductor layer, and above-mentioned high ohmic semiconductor layer comprises amorphous silicon, polysilicon etc., and above-mentioned low resistance semiconductor layer comprises the n+ amorphous silicon etc. of the impurity such as Doping Phosphorus in amorphous silicon.In addition, as semiconductor layer 54, the oxide semiconductor layer of zinc paste etc. can be used.The shape of semiconductor layer 54 can utilize photoetching process etc. to carry out patterning and decide after utilizing the film forming such as PECVD method.
Sputtering method etc. is such as utilized to make the transparent conductive materials such as indium tin oxide (ITO), indium-zinc oxide (IZO), zinc paste (ZnO), tin oxide (SnO) or their alloy with individual layer or multilayer film forming after being formed, use photoetching process to carry out patterning, pixel electrode 17 and common electrode 15 can be formed thus.The seam 30 being located at pixel electrode 17, the opening being located at common electrode 15 also can formed with patterning in addition simultaneously.
As the material of colored filter 23, the light transmissive photoresist (colored resist) of answering with each Color pair suitably can be used.As long as the material of black matrix 22 has light-proofness and is not particularly limited, suitably can use the resin material containing black pigment or there is the metal material of light-proofness.
The active-matrix substrate 10 of such making and opposing substrate 70 the sept of the column comprising insulating material arrange on side's substrate multiple after, use encapsulant laminating.Between active-matrix substrate 10 and opposing substrate 70, be formed with liquid crystal layer 80, but when method is dripped in use, before baseplate-laminating, carry out dripping of liquid crystal material, when using vacuum impregnation, after baseplate-laminating, injecting liquid crystal material.Liquid crystal layer 80 comprises the liquid crystal molecule (preferred nematic liquid crystal molecules) with positive dielectric anisotropy.Further, each substrate with the face of liquid crystal layer 80 side opposite side on attach polarization plates, phase retardation film etc., complete display panels thus.And, display panels is installed gate drivers, source electrode driver, display control circuit etc., and combines backlight etc., complete the liquid crystal display corresponding to purposes thus.
The structure example of the display panels of embodiment 1 is if use optical microscope (Olympus Corp manufactures, and semiconductor/FPD checks microscope M × 61L) and energy dispersion-type X-ray light analyser to set up type scanning transmission electron microscope (STEM-EDX:ScanningTransmissionElectronMicroscopeEnergyDis persiveX-raySpectroscope, Hitachi Hi-tech Technology Corp. (Hitachi Ha イ テ Network ノ ロ ジ ー ズ society) manufacture HD-2700) to carry out confirming and measuring.
Embodiment 2
Embodiment 2 is liquid crystal display of the FFS mode of multidomain (2 farmland).
Fig. 5 is the schematic top plan view of the active-matrix substrate of the liquid crystal display of the FFS mode of embodiment 2.In embodiment 1, as shown in Figure 1, totally 3 bends of V word section 33 are formed between principal part 31 and V word section 33 and between principal part 32 and V word section 33, but in embodiment 2, except principal part 131,132 and V word section 133, also be formed with linear parts (secondary portion) 134,135, and be formed with bend between principal part 131 and secondary portion 134 and between principal part 132 and secondary portion 135, be formed with totally 5 bends.Other formation is same with embodiment 1, therefore omits explanation herein.Below, the structure of the pixel electrode 117 of the liquid crystal display 210 of embodiment 2 is described.
Pixel electrode 117 is formed with the multiple seams 130 be parallel to each other, pixel electrode 117 comprise more than 3 that are parallel to each other linear parts 118 and by interconnective for linear parts 118 coupling part 119,120.
Seam 130 has laterally zygomorphic shape, and seam 130 comprises straight line portion (principal part) 131,132 respectively; And principal part 131,132 is interconnected, 2 straight line portioies 136,137 is connected to V shape and the part (V word section) 133 formed.Principal part 131,132 is corresponding with above-mentioned second straight line portion, straight line portion 136,137 with above-mentioned first or the 3rd straight line portion corresponding.From the view point of same with embodiment 1, V word section 133 relative to above-below direction formed angle (a °) set be greater than principal part 131,132 relative to above-below direction formed angle (b °).
And seam 130 comprises the linear parts (secondary portion) 134,135 be located at respectively between principal part 131,132 and coupling part 119,120.Pair portion 134,135 is corresponding with above-mentioned first straight line portion.As shown in Figure 6, the angle (d °) that the initial orientation direction (two arrows in Fig. 5) of secondary portion 134,135 and liquid crystal molecule is formed set be greater than principal part 131,132 relative to above-below direction formed angle (b °).Pair portion 134,135 and V word section 133(straight line portion 136,137) same be auxiliary part, in the region comprising principal part 131,132, control the orientation of most of liquid crystal molecule that liquid crystal layer 80 comprises.Near coupling part 119, due to the electric field produced from coupling part 119, likely make the orientation disorder of liquid crystal molecule.Therefore, between coupling part 119 with principal part 131, be provided with relative large secondary portion 134, the angle formed relative to above-below direction, the orientation disorder of the liquid crystal molecule near coupling part 119 can be suppressed thus.For the same reason, secondary portion 135 is also provided with.
In embodiment 1, be conceived to principal part 31,32 and V word section 33(straight line portion 36,37), the seam being arranged in Fig. 1 high order end is illustrated as the first seam, but in the present embodiment, when being conceived to secondary portion 134,135, the seam and first being arranged in Fig. 5 low order end stitches corresponding.First seam is the seam being positioned at one end in pixel, and the adjacent seam of the first seam bends close to the first mode of stitching with principal part 131 and secondary portion 134.In addition, the adjacent seam of the first seam bends close to the first mode of stitching with principal part 132 and secondary portion 135.From this first seam more away from seam, the length in secondary portion 134,135 is shorter.Such as, the length of secondary portion 134 or the pixel electrode part adjacent with secondary portion 135 becomes 5.5 μm, 4 μm, 2.5 μm and 1 μm successively respectively in Figure 5 from right.The one end in each the secondary portion 134,135 in seam 130 is positioned on identical the second imaginary line (with the straight line of above-mentioned second line correspondences), and the other end in secondary portion 134,135 is positioned on identical the first imaginary line (with the straight line of above-mentioned first line correspondences).As shown in Figure 6, the first imaginary line and the second imaginary line form the angle (e °) of regulation.From first seam more away from seam, the bend between secondary portion 134 and principal part 131 and the bend between secondary portion 135 and principal part 132 are more close to the first imaginary line.
By forming pixel electrode 117 like this, the difference of L and S in L and S that comprise in the region of principal part 131,132 and the region comprising secondary portion 134,135 can be reduced, L with S in two regions also can be made in fact mutually identical.
On the other hand, in the liquid crystal display 510 of the manner of comparison 1 of existing FFS mode, as shown in Figure 10, between seam, electrode is all formed as roughly same shape, and the angle e shown in Fig. 6 ° does not exist.
Now, as mentioned above, the width S in secondary portion 534,535 is less than the width S of principal part 531,532.
Therefore, in the liquid crystal display 510 of manner of comparison 1, when will reduce the summation of width L and width S as far as possible, the summation needing to comprise width L in the region in secondary portion 534,535 and width S becomes the patten's design of the ultimate value be allowed to.Such as, the ultimate value be allowed to of width L and width S be respectively 2.5 μm and 4.0 μm (summation of width L and width S is 6.5 μm) time, when to make the width S of the width L of the electrode part of formation principal part 531,532 and principal part 531,532 become the patten's design of 2.5 μm of minimum value and 4.0 μm respectively, the width forming the electrode in secondary portion 534,535 becomes 2.0 μm, the width S in pair portion 534,535 becomes 4.1 μm of degree, is less than the ultimate value be allowed to.Consequently, when producing the process deviation of alignment offset etc. of photomask, produce the transmission bias (display is uneven) in the deviation of the transmissivity between display panels or 1 display panels (viewing area).Therefore, in the liquid crystal display 510 of manner of comparison 1, need in the region comprising secondary portion 534,535, width L and width S are set in be no more than the ultimate value be allowed to scope in, but, if like this, in the region comprising principal part 531,532, width L and width S can become large, thus produce the decline of display performance, the reduction of such as panel transmissivity.
On the other hand, in the liquid crystal display 210 of embodiment 2, due to the width L in the region comprising principal part 131,132 and width S can be reduced and comprise the width L in region and the difference of width S in secondary portion 134,135, therefore, even if L and S such as comprising the region of principal part becomes the size near tolerance limit value, also can prevent L and S in the region comprising secondary portion from exceeding tolerance limit value.Consequently, the pattern of the seam that the deviation due to technique can be suppressed to cause changes, and in addition, can improve transmissivity.Particularly, when L with S comprised in the region of principal part 131,132 and L with S in the region comprising secondary portion 134,135 being reduced in technique the ultimate value that is allowed to and being set as in fact mutually identical value, the liquid crystal display 210 of embodiment 2 transmissivity compared with the liquid crystal display 510 of the manner of comparison 1 shown in Figure 10 improves 8%.
The size of angle d ° is not particularly limited, and the liquid crystal display as multidomain can obtain suitable visual angle, as long as be set as the angle that can be inhibited to mistake generation and anti-pressing performance.Particularly, optimized angle d ° is set as 20 ~ 40 °.
In addition, the size of angle e ° is also not particularly limited, and the mode preferably becoming the minimum value that can manufacture with the summation of L and S on the whole at seam sets, and particularly, is preferably set to 5 ~ 15 °.
Embodiment 3
Embodiment 3 is liquid crystal display of the FFS mode of single domain.
Fig. 7 is the schematic top plan view of the active-matrix substrate of the liquid crystal display of the FFS mode of embodiment 3.In embodiment 1 and 2, as shown in Figure 1 and Figure 5, be formed with V word section 33,133 respectively, and do not form V word section in embodiment 3.Be formed with principal part 231 and linear parts (secondary portion) 234,235, and be formed with bend between principal part 231 and secondary portion 234 and between principal part 231 and secondary portion 235, be formed with 2 bends altogether.Other formation is same with embodiment 1, therefore in this description will be omitted.Below, the structure of the pixel electrode 217 of the liquid crystal display 310 of embodiment 3 is described.
Pixel electrode 217 is formed with the multiple seams 230 be parallel to each other, pixel electrode 217 comprise more than 3 that are parallel to each other linear parts 218 and by interconnective for linear parts 218 coupling part 219,220.In the present embodiment, the initial orientation direction setting of liquid crystal molecule is from the direction that the above-below direction of Fig. 7 tilts a little (direction of arrow Fig. 7).
Seam 230 has point-symmetric shape, comprises the linear parts (secondary portion) 234,235 be located at respectively between principal part 231 and coupling part 219,220.Principal part 231 is corresponding with above-mentioned second straight line portion, and secondary portion 234,235 is corresponding with above-mentioned first straight line portion.From the view point of same with embodiment 1, the angle initialization of the initial orientation direction formation of secondary portion 234,235 and liquid crystal molecule must be greater than the angle of the initial orientation direction formation of principal part 231 and liquid crystal molecule.And the angle that the angle that secondary portion 234 and the initial orientation direction of liquid crystal molecule are formed and secondary portion 235 and the initial orientation direction of liquid crystal molecule are formed is identical in fact.That is, secondary portion 234 extends to diametical direction, secondary portion 235.Pair portion 234,235 is auxiliary parts, and in the region comprising principal part 231, the orientation of most of liquid crystal molecule that liquid crystal layer 80 comprises is controlled.Near coupling part 219, due to the electric field produced from coupling part 219, likely make the orientation disorder of liquid crystal molecule.Therefore, by arranging relative large secondary portion 234, the angle formed relative to above-below direction between coupling part 219 with principal part 231, the orientation disorder of liquid crystal molecule near coupling part 219 can be suppressed.For identical reason, be also provided with secondary portion 235.
In the present embodiment, when being conceived to secondary portion 234, the seam and first being arranged in Fig. 7 right-hand member stitches corresponding.First seam is the seam being positioned at one end in pixel, and the adjacent seam of the first seam bends close to the first mode of stitching with principal part 231 and secondary portion 234.From this first seam more away from seam, the length in secondary portion 234 is shorter.The one end in each the secondary portion 234 in seam 230 is positioned on identical the second imaginary line (with the straight line of above-mentioned second line correspondences), and the other end in secondary portion 234 is positioned on identical the first imaginary line (with the straight line of above-mentioned first line correspondences).First imaginary line and the second imaginary line form the angle of regulation.From first seam more away from seam, the bend between secondary portion 234 and principal part 231 is more close to the first imaginary line.On the other hand, when being conceived to secondary portion 235, the seam and first being arranged in Fig. 7 left end stitches corresponding.The one end in each the secondary portion 235 in seam 230 is positioned on identical the second imaginary line (with the straight line of above-mentioned second line correspondences), and the other end in secondary portion 235 is positioned on identical the first imaginary line (with the straight line of above-mentioned first line correspondences).First imaginary line and the second imaginary line form the angle of regulation.From first seam more away from seam, the bend between secondary portion 235 and principal part 231 is more close to the first imaginary line.
By forming pixel electrode 217 like this, the difference of L and S in L and S that comprise in the region of principal part 231 and the region comprising secondary portion 234,235 can be reduced, L with S in two regions also can be made in fact mutually identical.
On the other hand, in the liquid crystal display 510 of the manner of comparison 1 of existing FFS mode, as shown in Figure 10, between seam, electrode is all formed as roughly same shape, and the angle that the first imaginary line and the second imaginary line are formed does not exist.
Now, as mentioned above, the width S in secondary portion 534,535 is less than the width S of principal part 531,532.
Therefore, in the liquid crystal display 510 of manner of comparison 1, when will reduce the summation of width L and width S as far as possible, the summation needing to comprise width L in the region in secondary portion 534,535 and width S becomes the patten's design of the ultimate value be allowed to.Such as, the ultimate value be allowed to of width L and width S be not 2.5 μm and 4.0 μm (summation of width L and width S is 6.5 μm) time, when making the width S of the width L of the electrode part of formation principal part 531,532 and principal part 531,532 become the patten's design of minimum value 2.5 μm and 4.0 μm respectively, the width forming the electrode in secondary portion 534,535 becomes 2.0 μm, the width S in pair portion 534,535 becomes 4.1 μm of degree, is less than the ultimate value be allowed to.Consequently, when producing the deviation of the technique such as alignment offset of photomask, the deviation (display is uneven) of the transmissivity in the deviation of the transmissivity between display panels or 1 display panels (viewing area) can be produced.Therefore, in the liquid crystal display 510 of manner of comparison 1, need in the region comprising secondary portion 534,535, width L and width S are set in be no more than the ultimate value be allowed to scope in, but when designing like this, in the region comprising principal part 531,532, width L and width S can become large, produce the decline of display performance, the reduction of such as panel transmissivity.
On the other hand, in the liquid crystal display 310 of embodiment 3, the width L in the region of principal part 231 and width S be can reduce to comprise and the width L in region and the difference of width S in secondary portion 234,235 comprised, even if L and S therefore such as comprising the region of principal part becomes the size near tolerance limit value, also can prevent L and S in the region comprising secondary portion from exceeding tolerance limit value.Consequently, the pattern of the seam that the deviation due to technique can be suppressed to cause changes, and in addition, can improve transmissivity.Particularly, when L with S comprised in the region of principal part 231 and L with S in the region comprising secondary portion 234,235 are reduced in technique be allowed to ultimate value, be set as in fact mutually identical value, the liquid crystal display 310 of embodiment 3 transmissivity compared with the liquid crystal display 510 of the manner of comparison 1 shown in Figure 10 improves 8%.
The size of the angle that the angle of initial orientation direction formation of pair portion 234 and liquid crystal molecule and the initial orientation direction of secondary portion 234 and liquid crystal molecule are formed is not particularly limited respectively, as long as be set as that the liquid crystal display as multidomain can obtain suitable visual angle, the angle that can be inhibited to mistake generation and anti-pressing performance.Particularly, preferably these angle initializations are 20 ~ 40 °.
The size at the angle of the initial orientation direction formation of principal part 231 and liquid crystal molecule is not particularly limited, as long as be set as that the liquid crystal display as multidomain can obtain suitable visual angle, and the angle that can be inhibited to mistake generation and anti-pressing performance.Particularly, preferably this angle initialization is 3 ~ 10 °.
The size of the angle that the first imaginary line and the second imaginary line are formed also is not particularly limited, and the mode preferably becoming the minimum value that can manufacture with the summation of L and S on the whole at seam sets, and particularly, is preferably set to 5 ~ 15 °.
Represent the variation of embodiment 1 ~ 3 below.
In embodiment 1 ~ 3, the long side direction being sewn on pixel extends, but also can be the mode of extending at the short side direction of pixel.
In embodiment 1 ~ 3, common electrode is formed with pixel electrode, and pixel electrode forms seamed, but also can be formed with common electrode on the pixel electrode and common electrode forms seamed form.About such form, the variation of embodiment 3 is used to be described below.
Fig. 8 is the schematic top plan view of the active-matrix substrate of the liquid crystal display of the FFS mode of the variation of embodiment 3.Fig. 9 is the schematic top plan view of the common electrode of the active-matrix substrate representing the variation being located at embodiment 3.
In the liquid crystal display 410 of the variation of embodiment 3, as shown in Figure 9, common electrode 315 is formed in the most mode being covered in viewing area.Common electrode 315 is formed on pixel electrode 317, and is formed with the multiple seams 330 be parallel to each other at common electrode 315, and common electrode 315 comprises the linear parts of more than 1.On the other hand, as shown in Figure 8, do not form seam at pixel electrode 317, pixel electrode 317 is not formed as tabular with having crack, relative with seam 330.
Seam 330 comprises principal part 331 and secondary portion 334,335, is the shape identical with the seam 230 in the pixel electrode 217 of the liquid crystal display being formed at embodiment 3.Therefore, in the variation of embodiment 3, also the effect same with embodiment 3 can be played.That is, the width L in the region comprising principal part 331 and width S can be reduced and comprise the width L in region and the difference of width S in secondary portion 334,335.Consequently, the pattern of the seam that the deviation due to technique can be suppressed to cause changes, and in addition, can improve transmissivity.In addition, the region comprising principal part 331 also can be made in fact mutually identical with L with S in the region comprising secondary portion 334,335.
The application, based on No. 2011-175465th, Japan's patented claim of filing an application on August 10th, 2011, asks based on Paris Convention and even the right of priority of regulation entering state.The whole of content of this application are programmed in present specification as reference.
description of reference numerals
10: active-matrix substrate
11,21: insulated substrate
12: gate insulating film
13,513: data bus
14: the first dielectric films
15,315,515: common electrode
16a: the second dielectric film
16b: the three dielectric film
17,117,217,317,517: pixel electrode
18,118,218,518: linear parts
19,20,119,120,219,220,519,520: coupling part
22: black matrix
23: colored filter
30,130,230,330,530: seam
31,32,131,132,231,331,531,532: principal part
33,133,533:V word portion
36,37,136,137: straight line portion
51,551: grid bus
53,553:TFT(thin film transistor (TFT))
54: semiconductor layer
55a: gate electrode
55b: source electrode
55c: drain electrode
70: opposing substrate
71: contact hole
80: liquid crystal layer
110,210,310,410,510: liquid crystal display
134,135,234,235,334,335,534,535: secondary portion
Claims (5)
1. a liquid crystal display, possesses: the second substrate that first substrate is relative with above-mentioned first substrate and the liquid crystal layer comprising liquid crystal molecule be located between above-mentioned first substrate and above-mentioned second substrate, is characterized in that,
Above-mentioned first substrate comprises: the first electrode, the second electrode be located at the dielectric film on above-mentioned first electrode and be located on above-mentioned dielectric film,
Above-mentioned second electrode is formed with the multiple seams be located in pixel,
Above-mentioned first electrode is relative with above-mentioned multiple seam,
Above-mentioned multiple seam is parallel to each other,
Above-mentioned multiple seam comprises respectively: the first straight line portion, and it extends at first direction; Second straight line portion, it is connected with one end of above-mentioned first straight line portion, extends in second direction; And bend, it is bending in above-mentioned first straight line portion and the above-mentioned second interconnective region of straight line portion,
The other end of above-mentioned multiple first straight line portion is positioned on identical straight line,
When by above-mentioned multiple seam be positioned in above-mentioned pixel one end seam be the first seam time,
The adjacent seam of above-mentioned first seam bends close to the above-mentioned first mode of stitching with the first straight line portion and the second straight line portion,
From above-mentioned first seam more away from seam, the length of above-mentioned first straight line portion is shorter,
When the direction of orientation of above-mentioned liquid crystal molecule when not applying voltage is set to initial orientation direction,
Above-mentioned first direction and above-mentioned second direction are different from above-mentioned initial orientation direction respectively,
The angle that above-mentioned first direction and above-mentioned initial orientation direction are formed is greater than the angle of above-mentioned second direction and the formation of above-mentioned initial orientation direction,
Above-mentioned first straight line portion is shorter than above-mentioned second straight line portion.
2. a liquid crystal display, possesses: the second substrate that first substrate is relative with above-mentioned first substrate and the liquid crystal layer comprising liquid crystal molecule be located between above-mentioned first substrate and above-mentioned second substrate, is characterized in that,
Above-mentioned first substrate comprises: the first electrode, the second electrode be located at the dielectric film on above-mentioned first electrode and be located on above-mentioned dielectric film,
Above-mentioned second electrode is formed with the multiple seams be located in pixel,
Above-mentioned first electrode is relative with above-mentioned multiple seam,
Above-mentioned multiple seam is parallel to each other,
Above-mentioned multiple seam comprises respectively: the first straight line portion, and it extends at first direction; Second straight line portion, it is connected with one end of above-mentioned first straight line portion, extends in second direction; And bend, it is bending in above-mentioned first straight line portion and the above-mentioned second interconnective region of straight line portion,
The other end of above-mentioned multiple first straight line portion is positioned on identical straight line,
When by above-mentioned multiple seam be positioned in above-mentioned pixel one end seam be the first seam time,
The adjacent seam of above-mentioned first seam bends close to the above-mentioned first mode of stitching with the first straight line portion and the second straight line portion,
From above-mentioned first seam more away from seam, the length of above-mentioned first straight line portion is shorter,
When the direction of orientation of above-mentioned liquid crystal molecule when not applying voltage is set to initial orientation direction,
Above-mentioned first direction and above-mentioned second direction are different from above-mentioned initial orientation direction respectively,
The angle that above-mentioned first direction and above-mentioned initial orientation direction are formed is 20 ~ 40 °,
The angle that above-mentioned second direction and above-mentioned initial orientation direction are formed is 3 ~ 10 °,
Above-mentioned straight line is the first straight line,
The above-mentioned crooked position of above-mentioned multiple seam on the second identical straight line,
The angle that above-mentioned first straight line and above-mentioned second straight line are formed is 5 ~ 15 °.
3. a liquid crystal display, possesses: the second substrate that first substrate is relative with above-mentioned first substrate and the liquid crystal layer comprising liquid crystal molecule be located between above-mentioned first substrate and above-mentioned second substrate, is characterized in that,
Above-mentioned first substrate comprises: the first electrode, the second electrode be located at the dielectric film on above-mentioned first electrode and be located on above-mentioned dielectric film,
Above-mentioned second electrode is formed with the multiple seams be located in pixel,
Above-mentioned first electrode is relative with above-mentioned multiple seam,
Above-mentioned multiple seam is parallel to each other,
Above-mentioned multiple seam comprises respectively: the first straight line portion, and it extends at first direction; Second straight line portion, it is connected with one end of above-mentioned first straight line portion, extends in second direction; And bend, it is bending in above-mentioned first straight line portion and the above-mentioned second interconnective region of straight line portion,
The other end of above-mentioned multiple first straight line portion is positioned on identical straight line,
When by above-mentioned multiple seam be positioned in above-mentioned pixel one end seam be the first seam time,
The adjacent seam of above-mentioned first seam bends close to the above-mentioned first mode of stitching with the first straight line portion and the second straight line portion,
From above-mentioned first seam more away from seam, the length of above-mentioned first straight line portion is shorter,
Above-mentioned multiple seam also comprises the 3rd straight line portion respectively, and above-mentioned 3rd straight line portion is connected with the above-mentioned other end of above-mentioned first straight line portion, extends at third direction,
Above-mentioned first straight line portion and above-mentioned 3rd straight line portion are set as V shape.
4. liquid crystal display according to claim 3, when the direction of orientation of above-mentioned liquid crystal molecule when not applying voltage is set to initial orientation direction,
The angle that above-mentioned third direction and above-mentioned initial orientation direction are formed is 20 ~ 40 °,
Above-mentioned multiple seam also comprises respectively: the 4th straight line portion, its one end be not connected with above-mentioned first straight line portion being connected to above-mentioned 3rd straight line portion, extends in fourth direction; And second bend, it is bending in above-mentioned 3rd straight line portion and the above-mentioned 4th interconnective region of straight line portion,
Above-mentioned straight line is the first straight line,
Above-mentioned second crooked position of above-mentioned multiple seam on the 3rd identical straight line,
The angle that above-mentioned first straight line and above-mentioned 3rd straight line are formed is 5 ~ 15 °,
The angle that above-mentioned fourth direction and above-mentioned initial orientation direction are formed is 3 ~ 10 °.
5. liquid crystal display according to claim 1 and 2, above-mentioned second electrode comprises: the linear parts of more than 3, and it is adjacent with above-mentioned multiple seam; And connecting portion, the linear parts of above-mentioned more than 3 is interconnected by it,
Above-mentioned first straight line portion is adjacent with above-mentioned connecting portion.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011-175465 | 2011-08-10 | ||
| JP2011175465 | 2011-08-10 | ||
| PCT/JP2012/069798 WO2013021929A1 (en) | 2011-08-10 | 2012-08-03 | Liquid crystal display |
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| Publication Number | Publication Date |
|---|---|
| CN103733130A CN103733130A (en) | 2014-04-16 |
| CN103733130B true CN103733130B (en) | 2016-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280038824.7A Active CN103733130B (en) | 2011-08-10 | 2012-08-03 | Liquid crystal display |
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| JP (1) | JP5756860B2 (en) |
| CN (1) | CN103733130B (en) |
| WO (1) | WO2013021929A1 (en) |
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| CN101750802A (en) * | 2008-12-19 | 2010-06-23 | 索尼株式会社 | Liquid crystal panel and electronic apparatus |
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| JP5164672B2 (en) * | 2008-05-30 | 2013-03-21 | 株式会社ジャパンディスプレイウェスト | Liquid crystal display device, electronic equipment |
| JP5339351B2 (en) * | 2008-06-18 | 2013-11-13 | 株式会社ジャパンディスプレイ | LCD panel |
| US8804081B2 (en) * | 2009-12-18 | 2014-08-12 | Samsung Display Co., Ltd. | Liquid crystal display device with electrode having opening over thin film transistor |
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| WO2013021929A1 (en) | 2013-02-14 |
| JP5756860B2 (en) | 2015-07-29 |
| JPWO2013021929A1 (en) | 2015-03-05 |
| CN103733130A (en) | 2014-04-16 |
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