CN1350196A

CN1350196A - Wide-viewing angle liquid crystal display

Info

Publication number: CN1350196A
Application number: CN 00133200
Authority: CN
Inventors: 翁嘉璠
Original assignee: DAQI SCIENCE AND TECHNOLOGY Co Ltd
Current assignee: DAQI SCIENCE AND TECHNOLOGY Co Ltd
Priority date: 2000-10-25
Filing date: 2000-10-25
Publication date: 2002-05-22
Anticipated expiration: 2020-10-25
Also published as: CN1141614C

Abstract

The present invention relates to a liquid crystal display, including two parallel first base plate and second base plate, first base plate possesses first surface and first electrode placed on said first surface, and second base plate possesses second surface and pixel electrode placed on the second surface. Said liquid crystal display also includes at least one notch or convex block approximate to long strip form which is placed on the pixel electrode along the first direction, and several liquid crystal molecules with negative dielectric constant and anisotrophy which are filled between first electrode and pixed electrode along the second direction, the first direction and second direction are parlalel to first electrode and pixel electrode, and between first direction and second direction there is an angle.

Description

The LCD of wide viewing angle

(liquid crystal display LCD), particularly relates to a kind of LCD of wide viewing angle to the present invention relates to a kind of LCD.

LCD has that external form is frivolous, power consumption is few and characteristic such as radiationless pollution, be widely used on the portable information products such as notebook computer (notebook), PDA(Personal Digital Assistant), even the existing trend that replaces the CRT monitor of existing desktop computer gradually.Liquid crystal molecule has different polarizations or refraction effect to light under different ordered states, LCD promptly is to utilize this specific character of liquid crystal molecule to control the amount of penetrating of light, and then makes LCD produce abundant image.Yet the visual angle of available liquid crystal display can be subjected to the influence of liquid crystal molecule structure and optical characteristics, therefore is necessary to develop a kind of LCD of new structure, so that preferable wider visual angle to be provided.

Please refer to Fig. 1 and Fig. 2, Fig. 1 reverses wire (Fig. 2 is the existing synoptic diagram that reverses the dark attitude of wire LCD 10 for twist nematic, the TN) synoptic diagram of the bright attitude of LCD 10 for existing.As shown in Figure 1, existing TN-LCD 10 includes parallel relative, the below that a top electrode 16 is located at upper substrate 12 of a upper substrate 12, an infrabasal plate 14 and upper substrate 12, top that a bottom electrode 18 is located at infrabasal plate 14, top that two polaroids (polarizer) 20,22 are located at upper substrate 12 respectively and below and a plurality of liquid crystal molecule 24 with positive dielectric constant anisotropy (positive dielectric constantanisotropy) of infrabasal plate 14 and is filled between upper substrate 12 and the infrabasal plate 14.The polarization of polaroid 20 (polarization) direction P1 is for being parallel to paper, and the polarization direction P2 of polaroid 22 is perpendicular to paper, and the orientation of liquid crystal molecule 24 is converted to direction perpendicular to paper by the direction that is parallel to paper from top to bottom gradually.

As shown in Figure 1, when the top electrode 16 and the bottom electrode 18 of LCD 10 did not apply voltage, liquid crystal molecule 24 was not subjected to electric field influence and parallel with

polaroid

20,22 respectively.One light (not shown) is injected from the below, produces polarization via polaroid 22, makes the polarized light of vertical paper be passed infrabasal plate 14.Then polarized light is injected liquid crystal molecule 22, and produces the phenomenon of refraction.Incident light is followed the orientation of liquid crystal molecule 22, and the polarization direction is transferred gradually to the direction of parallel paper by the direction of vertical paper.At last, when the polarized light desire saw through upper substrate 12, because the direct of travel of polarized light is parallel with the polarization direction of polaroid 20, this was the bright attitude of TN-LCD 10.

As shown in Figure 2, when between top electrode 16 and bottom electrode 18, applying a voltage, and between upper substrate and infrabasal plate, produce an electric field.Arrange owing to its major axis of positive liquid crystal molecule with positive specific inductive capacity can be inclined to parallel electric field direction 26, so liquid crystal molecule 24 will be arranged with the direction perpendicular to upper and lower base plate 12,14.Therefore, the direct of travel of light is vertical with Polarizer 20, and light can't pass through polaroid 20.Therefore, the observer who is positioned at upper substrate 12 tops can't see any light, and this is the dark attitude of TN-LCD 10.

For the starting potential (threshold voltage) that reduces TN-LCD 10, and make that liquid crystal molecule 24 is easier to be subjected to electric field influence and to rotate, the liquid crystal molecule 24 among Fig. 1 usually and upper substrate 12 or infrabasal plate 14 accompany a tilt angle (not shown).Yet this kind tilt angle but causes the asymmetric of liquid crystal molecule 24, makes light intensity that the observer sees in different angles and inequality, makes the visual angle of TN-LCD 10 when showing be restricted.And when showing, because the adhesion of liquid crystal molecule 24 and

substrate

12,14, in fact only have 12,14 middle bodies of two substrates liquid crystal molecule 24 can with go to fully vertically with

substrate

12,14, the liquid crystal molecule 24 of

adjacent substrates

12,14 is understood maintain an angle (not shown) with substrate 12,14.In addition, consider the effect of aforementioned tilt angle more in the lump, the liquid crystal molecule 24 when making dark attitude is not as evenly distributed as Fig. 2, therefore dark attitude poor effect, and contrast descends.In addition, therefore the visual angle of TN-LCD10 also is severely limited, even has the different phenomenon in visual angle, the left and right sides to produce.

The object of the present invention is to provide a kind of LCD, to address the above problem with broad visual angle.

The object of the present invention is achieved like this, promptly provide a kind of LCD (liquid crystaldisplay, LCD), it includes: one first substrate, it includes a first surface; One second substrate, it includes a second surface, and this second surface is parallel relative with the first surface of this first substrate, and definition has a pixel region on this second surface; One first electrode is located on the first surface of this first substrate; One pixel electrode is located on the pixel region of this second substrate, and has first breach (slit) of an approximate strip that extends along a first direction on this pixel electrode; And the liquid crystal molecule filling of a plurality of negative permittivity anisotropy (negative dielectric constant anisotropy) is between this first electrode and this pixel electrode, and this long axis of liquid crystal molecule is to be horizontally arranged between this first electrode and this pixel electrode along a second direction, has one first angle between this second direction and this first direction; Wherein when between this first electrode and this pixel electrode, adding a voltage, can form a deflection electric field between this first electrode and this pixel electrode, then (a) this deflection electric field has one first horizontal deflection electric field component in contiguous this first indentation, there, and this first horizontal deflection electric field component is perpendicular to this first direction, and make the long axis of liquid crystal molecule of contiguous this first breach turn to parallel this first direction, (b) and this deflection electric field there is no the horizontal deflection electric field component in contiguous this first electrode place, and make the long axis of liquid crystal molecule of contiguous this first electrode maintain this second direction, (c) and the liquid crystal molecule between this first electrode and this first indentation, there is to redirect to this first direction gradually by this second direction.

The present invention also provides a kind of LCD, and it includes: one first substrate, and it includes a first surface; One second substrate, it includes a second surface, and this second surface is parallel relative with the first surface of this first substrate, and definition has a pixel region on this second surface; One first electrode is located on the first surface of this first substrate; One pixel electrode is located on the pixel region of this second substrate; First projection of at least one approximate strip, this first projection major axis is located on this pixel electrode along a first direction; And the liquid crystal molecule filling of a plurality of negative permittivity anisotropy (negative dielectric constantanisotropy) is between this first electrode and this pixel electrode, when not applying a deflection electric field, long axis of liquid crystal molecule is horizontally arranged between this first electrode and this pixel electrode along a second direction, and has one first angle between this second direction and this first direction; Wherein when adding a voltage between this first electrode and this pixel electrode the time, can form this deflection electric field between this first electrode and this pixel electrode, then (a) this deflection electric field has one first horizontal deflection electric field component in contiguous this first projection place, and this first horizontal deflection electric field component is perpendicular to this first direction, and make the long axis of liquid crystal molecule of contiguous this first projection turn to parallel this first direction, (b) and this deflection electric field there is no the horizontal deflection electric field component in contiguous this first electrode place, and make the long axis of liquid crystal molecule of contiguous this first electrode maintain this second direction, (c) and the liquid crystal molecule between the first projection place of this first electrode and this pixel electrode is to be diverted to this first direction gradually by this second direction.

Below in conjunction with accompanying drawing, describe embodiments of the invention in detail, wherein:

Fig. 1 is the existing synoptic diagram that reverses the bright attitude of wire LCD;

Fig. 2 is the existing synoptic diagram that reverses the dark attitude of wire LCD;

Fig. 3 has the synoptic diagram of high light and shade contrast's LCD for the present invention;

Fig. 4 is the top view of the LCD of Fig. 3;

Fig. 5 is the diagrammatic cross-section of the LCD of Fig. 3 along second direction;

Synoptic diagram when Fig. 6 is the bright attitude of the LCD of Fig. 3;

Fig. 7 is the top view of second embodiment of LCD of the present invention;

Fig. 8 is the diagrammatic cross-section of second embodiment of LCD of the present invention;

Fig. 9 is the top view of the 3rd embodiment of LCD of the present invention;

Figure 10 is the top view of the 4th embodiment of LCD of the present invention;

Figure 11 is the top view of the 5th embodiment of LCD of the present invention;

Figure 12 is the top view of the 6th embodiment of LCD of the present invention;

Figure 13 is the top view of the 7th embodiment of LCD of the present invention;

Figure 14 is the top view of the 8th embodiment of LCD of the present invention;

Figure 15 is the top view of the 9th embodiment of LCD of the present invention.Illustrated symbol description

30 LCD, 32 first directions

34 second directions, 35 first polarization directions

36,46 electric fields, 37,47 directions of an electric field

361 deflection electric fields, 3611,3612 deflection electric field components

38 third directions, 40,401,402 liquid crystal molecules

42 four directions are to 44 the 5th directions

461 deflection electric fields, 4611,4612 deflection electric field components

100 first substrates, 102 first surfaces

104 first electrodes, 106 first polaroids

108,208,212 breach, 110,210,214 projections

200 second substrates, 202 second surfaces

204 pixel electrodes, 206 second polaroids

Please refer to Fig. 3, Fig. 3 has the synoptic diagram of high light and shade contrast's LCD 30 for the present invention.As shown in Figure 3, LCD 30 of the present invention includes one first substrate 100, and one second substrate 200.Include on first substrate 100 on a first surface 102, the second substrates 200 and include a second surface 202, and second surface 202 is parallel relative with first surface 102, definition one pixel region (not shown) on second surface.First substrate 100 can be a upper substrate or an infrabasal plate, and is relative, and second substrate 200 is an infrabasal plate or a upper substrate.In the present invention, only introducing first substrate 100 is a upper substrate, and second substrate 200 is the structure of an infrabasal plate, but notion of the present invention still can be applicable to two substrates about in the of 100,200 on the opposite configuration.The first surface 102 of first substrate 100 is provided with one first electrode 104, and the surface of opposite side is provided with one first polaroid 106.The second surface 202 of second substrate 200 is provided with a pixel electrode 204, and the surface of opposite side is provided with one second polaroid 206.Pixel electrode 204 is located in the pixel region of second substrate, and first electrode 104 is made of a transparent conductive material with pixel electrode 204.

Please refer to Fig. 4, Fig. 4 is the top view of the LCD 30 of Fig. 3.As shown in Figure 4, this pixel electrode 204 is provided with the breach (slit) 208 of at least one approximate strip, and this breach major axis extends along a first direction 32.Be filled with a plurality of liquid crystal molecules 40 between first substrate 100 and second substrate 200 with negative permittivity anisotropy (negative dielectric constant anisotropy), liquid crystal molecule 40 major axis are not horizontally arranged between first electrode 104 and the pixel electrode 204 along a second direction 34 when applying electric field, and accompany an angle theta between second direction 34 and the first direction 32 ₁

Second direction 34 is the polarization direction 34 of second polaroid 206, and first polarization direction 35 of first polaroid 106 is vertical with second polarization direction 34 of second polaroid 206.LCD 30 is provided with an on-off element (not shown) on the second surface 202 of second substrate 200, a thin film transistor (TFT) (thin film transistor) for example is used for controlling the breakdown action of LCD 30.When on-off element is not opened, promptly do not apply a voltage between first electrode 104 and the pixel electrode 204, and cause an electric field, this moment, liquid crystal molecule was to arrange according to second direction 34, vertical with the polarization direction 35 of first polaroid 106, light can't pass through polaroid 106, so the observer will can't see any light and penetrate in LCD 30, and this is the dark attitude of LCD 30.Because the orientation of liquid crystal molecule is fully vertical with the polarization direction 35 of first polaroid, therefore, the dark attitude of LCD of the present invention gained when added electric field not is the dark attitude of very perfect (prefect).

Please refer to Fig. 5 and Fig. 6, Fig. 5 is the diagrammatic cross-section of the LCD 30 of Fig. 3 along second direction 34, the synoptic diagram when Fig. 6 is the bright attitude of the LCD 30 of Fig. 3.As shown in Figure 5, when on-off element is opened, just add a voltage between first electrode 104 and pixel electrode 204 time, can form an electric field 36, these direction of an electric field 37 vertical these second directions 34 between first electrode 104 and the pixel electrode 204.On second substrate 200, near the generation one deflection electric field 361 of the breach 208 of neighborhood pixels electrode 204.Therefore, can produce first horizontal electric field component 3611 perpendicular to first direction 32 near the contiguous breach 208, and the direction of negative liquid crystal molecule 40 vertical electric field with tendency is arranged, therefore, after applying voltage, near the liquid crystal molecule 402 neighborhood pixels electrode 204 breach 208 can be diverted to the first direction 32 of parallel breach 208 orientations gradually by original second direction 34.Moreover, can produce an electric field component 3612 perpendicular to second direction 34 near the contiguous breach 208, and the major axis of these electric field component 3612 equal vertical liquid crystal molecules 40, the rotation that makes liquid crystal molecule 40 can not produce parallel electric field direction 37 is rotated and maintain fixed pan.

In addition, deflection electric field 361 there is no the horizontal deflection electric field component in contiguous first electrode 104 places, and makes liquid crystal molecule 401 major axis of contiguous this first electrode 104 maintain second direction 34.So the liquid crystal molecule 40 between first electrode 104 and pixel electrode first breach 208 is to be diverted to first direction 32 gradually by second direction 34, and produces (the Twist Nematic of twist mode in the similar prior art; Bright attitude when TN) liquid crystal does not apply voltage.Just, after liquid crystal molecule 40 turned to, light along with the orientation of liquid crystal molecule, changed into first direction 32 by second direction 34 after being passed through by second polaroid 206 gradually.Because the orientation of liquid crystal molecule has not been the polarization direction 35 of vertical first polaroid fully, so light can pass through first polaroid 106, and arrive the observer in, be the bright attitude of LCD 30.

In order to reach technical though of the present invention, LCD 30 has adopted the anisotropic liquid crystal molecule 40 of negative permittivity, and forms breach 208 on pixel electrode 204, and produces a deflection electric field 361.Utilize the major axis tendency and the perpendicular principle of electric field of the anisotropic liquid crystal molecule 40 of negative permittivity, near breach 208 liquid crystal molecules 40 can be turned at grade, for the observer, viewed liquid crystal molecule 40 angles of any direction are all consistent, are not easy to cause the restriction at visual angle.And not applying the dark attitude that is produced before the electric field among the present invention is very dark dark attitude, because being the first directions 34 of complying with the second polaroid polarization direction, liquid crystal molecule 40 is horizontal, therefore liquid crystal molecule all is vertical with the polarization direction 35 of first polaroid, so can obtain the extraordinary dark attitude of effect.Because dark attitude is improved, so the contrast of LCD of the present invention can improve.And the visual angle is also relevant with contrast, and when contrast improved, the visual angle will be bigger, so the present invention can provide a kind of high light and shade contrast's wide-angle liquid crystal display.

Please refer to Fig. 7 and Fig. 8, Fig. 7 is the top view of second embodiment of LCD of the present invention, and Fig. 8 is the diagrammatic cross-section of second embodiment of LCD of the present invention.Previous embodiment utilizes breach 208 to form the deflection electric field, and forms the electric field component of vertical first direction 32, second direction 34.Second embodiment utilizes a projection 210 to be partial to electric field.Projection 210 can be made of conductive material or dielectric material, and in the present invention, projection 210 is to utilize dielectric material to constitute, to simplify manufacture craft and to save cost.

As shown in Figure 7, projection 210 is to be located on the surface of pixel electrode 204 along first direction 32.As shown in Figure 8, when producing an electric field 44 when between first electrode 104 and pixel electrode 204, applying a voltage, this electric field transfers a deflection electric field 441 at the projection place, this deflection electric field 441 has a horizontal deflection electric field component 4411 in contiguous projection 210 places, and this horizontal deflection electric field component 4411 is perpendicular to first direction 32, and makes liquid crystal molecule 402 major axis of contiguous projection 210 turn to parallel first direction 32.And this deflection electric field 441 there is no the horizontal deflection electric field component in contiguous first electrode 104 places, and makes liquid crystal molecule 401 major axis of contiguous first electrode 104 maintain second direction 34.First and last, liquid crystal molecule 40 rotates, and makes LCD become the state of bright attitude.

Please refer to Fig. 9 and Figure 10, Fig. 9 is the top view of the 3rd embodiment of LCD of the present invention, and Figure 10 is the top view of the 4th embodiment of LCD of the present invention.LCD of the present invention can be provided with breach 208 and projection 210 simultaneously, meets different design requirements.As shown in Figure 9, the third embodiment of the present invention is provided with one or more projections 210 in breach 208.As shown in figure 10, the fourth embodiment of the present invention is that at least one projection 210 is arranged on pixel electrode 204 surfaces between the breach 208, also can projection 212 be set all within the breach 208 and between the breach 208.Breach 208 or projection 210 all are provided with along first direction 32, otherwise liquid crystal molecule 40 can't fitly turn to.

Please refer to Figure 11 and Figure 12, Figure 11 is the top view of the 5th embodiment of LCD of the present invention, and Figure 12 is the top view of the 6th embodiment of LCD of the present invention.In order further to increase the visual angle of LCD 30, can on pixel electrode 204, form the breach or the projection of different directions.As shown in figure 11, except that breach 208, LCD 30 includes the breach 212 of at least one approximate strip, is located on the pixel electrode 204 along a third direction 38.34 horizontal of second directions of third direction 38 and liquid crystal molecule accompany an angle theta ₂When adding pressure drop between first electrode 104 and pixel electrode 204 time, the liquid crystal molecule of the breach 212 of neighborhood pixels electrode 204 (showing among Figure 11) can be diverted to the direction that is parallel to third direction 38 by second direction 34 and arrange.

As shown in figure 12, in the 6th embodiment of LCD 30, breach 208 is connected to each other with breach 212.In addition, one or more projections 210 can be set in breach 208 or between two breach 208.Also can at least one projection (not shown) be set along third direction 38 in breach 212 or between two breach 212, whether this projection can be selected to be connected with projection 210.

Please refer to Figure 13, Figure 13 is the top view of the 7th embodiment of LCD of the present invention.If when on pixel electrode 204, having only the projection 210 of setting, also can projection 214 be set along third direction 38, make the liquid crystal arrangement symmetry, increase the display quality of LCD 30.Same, whether projection 214 also can be selected to be connected with projection 210.Again with reference to Figure 14, Figure 14 is the top view of the 8th embodiment of LCD of the present invention, also can be in four directions, the first electrode upper edge projection 112 be set to 42, and along the 5th direction 44 projection 114 be set.The four directions accompanies an angle theta to 42 with second direction 34 ₃, and the 5th direction 44 accompanies an angle theta with second direction 34 ₄So can make the liquid crystal arrangement symmetry, increase the display quality of LCD 30.Same, whether projection 112 also can be selected to be connected with projection 114.

Please refer to Figure 15, Figure 15 is the top view of the 9th embodiment of LCD of the present invention.Aforementioned several embodiment is only designed at the electrode of a side, however notion of the present invention extend on the electrode of both sides, that is to say simultaneously breach or projection that various quantity, various directions are set on first electrode 104 and pixel electrode 204.As shown in figure 15, Figure 15 draws a kind of structure of simplifying, the 9th embodiment is provided with at least one breach 108 and at least one projection 110 in first electrode, 104 upper edges the 5th direction 44, and to 42 at least one breach 208 and at least one projection 210 is set in four directions, pixel electrode 204 upper edge.When impressed voltage is between first electrode 104 and pixel electrode 204, the breach 108 of contiguous first electrode 104 can be arranged with the direction that is parallel to the 5th direction 44 with the liquid crystal molecule of projection 110, and the breach 208 of neighborhood pixels electrode 204 can be arranged to 42 direction to be parallel to the four directions with the liquid crystal molecule of projection 210.

The characteristics of LCD 30 of the present invention are to have adopted the anisotropic liquid crystal molecule 40 of negative permittivity, and breach or projection are set on electrode, to form the deflection electric field.The deflection electric field comprises the component of a vertical liquid crystal major axis and parallel liquid crystal major axis, therefore, the present invention can make liquid crystal molecule 40 rotate at grade, and the image that the observer is seen is not subjected to the influence of liquid crystal molecule 40 tilt angles, and improves the display quality of LCD.

Compare with existing TN-LCD 10, the liquid crystal molecule 40 of LCD 30 has quite little tilt angle, it is different and change to make the luminous flux that sees through liquid crystal molecule 40 can not be subjected to the observation place, therefore LCD 30 of the present invention can enlarge the angular field of view of LCD, and solves the asymmetric problem in visual angle, the left and right sides among the existing TN-LCD 10.

The above preferred embodiment only of the present invention, all equalizations of doing according to claim of the present invention change and modify, and all should belong to the covering scope of patent of the present invention.

Claims

A LCD (liquid crystal display, LCD), it includes:

One first substrate, it includes a first surface;

One second substrate, it includes a second surface, and this second surface is parallel relative with the first surface of this first substrate, and definition has a pixel region on this second surface;

One first electrode is located on the first surface of this first substrate;

One pixel electrode is located on the pixel region of this second substrate, and has first breach (slit) of an approximate strip that extends along a first direction on this pixel electrode; And

The liquid crystal molecule filling of a plurality of negative permittivity anisotropy (negative dielectric constant anisotropy) is between this first electrode and this pixel electrode, and this long axis of liquid crystal molecule is to be horizontally arranged between this first electrode and this pixel electrode along a second direction, has one first angle between this second direction and this first direction;

Wherein when between this first electrode and this pixel electrode, adding a voltage, can form a deflection electric field between this first electrode and this pixel electrode, then (a) this deflection electric field has one first horizontal deflection electric field component in contiguous this first indentation, there, and this first horizontal deflection electric field component is perpendicular to this first direction, and make the long axis of liquid crystal molecule of contiguous this first breach turn to parallel this first direction, (b) and this deflection electric field there is no the horizontal deflection electric field component in contiguous this first electrode place, and make the long axis of liquid crystal molecule of contiguous this first electrode maintain this second direction, (c) and the liquid crystal molecule between this first electrode and this first indentation, there is to redirect to this first direction gradually by this second direction.
2. LCD as claimed in claim 1, wherein this pixel electrode includes at least one first projection that extends along this first direction in addition, and this first projection is positioned within this first breach.
3. LCD as claimed in claim 2, wherein this first projection is made of a photoresist layer, a conductive material or a dielectric material.
4. LCD as claimed in claim 1, wherein this pixel electrode includes second projection of at least one approximate strip in addition, and this second projection parallels with this first breach.
5. LCD as claimed in claim 4, wherein this second projection is made of a photoresist layer, a conductive material or a dielectric material.
6. LCD as claimed in claim 1, wherein the minor face width of first breach of this pixel electrode is between 5 to 20 microns (μ m).
7. LCD as claimed in claim 6, wherein the minor face width of this first breach is 10 microns (μ m).
8. LCD as claimed in claim 1, wherein this pixel electrode includes second breach of at least one approximate strip in addition, this second breach major axis extends along a third direction, this third direction differs from this first direction, accompany one second angle between this third direction and this second direction, when add this voltage between this first electrode and this pixel electrode when forming this deflection electric field, this deflection electric field has one second horizontal deflection electric field component in contiguous this second indentation, there, and this second horizontal deflection electric field component is one perpendicular to this third direction, and makes the long axis of liquid crystal molecule of contiguous this second breach be diverted to this third direction by this second direction.
9. LCD as claimed in claim 8, wherein this first breach is connected to second breach.
10. LCD as claimed in claim 8, wherein this pixel electrode includes the 3rd projection of at least one approximate strip that extends along this third direction in addition, and the 3rd projection is located within this second breach.
11. LCD as claimed in claim 8, wherein this pixel electrode includes the 4th projection of at least one approximate strip in addition, and the 4th projection parallels with this second breach.
12. LCD as claimed in claim 1, wherein this first electrode include in addition at least one along a four directions the 3rd breach to the approximate strip that extends, and this four directions to and the horizontal second direction of this liquid crystal molecule between accompany a third angle degree, when adding this voltage when between this first electrode and this pixel electrode, forming this deflection electric field with meeting, this deflection electric field has one the 3rd horizontal deflection electric field component in contiguous the 3rd indentation, there, and the 3rd horizontal deflection electric field component perpendicular to this four directions to, and the long axis of liquid crystal molecule that makes contiguous the 3rd breach by this second direction be diverted to this four directions to.
13. LCD as claimed in claim 12, wherein this first electrode include in addition at least one along this four directions the 5th protruding lacking to the approximate strip that extends, and the 5th projection is positioned within the 3rd breach.
14. LCD as claimed in claim 12, wherein this first electrode includes the 6th projection of at least one approximate strip in addition, and the 6th projection parallels in the 3rd breach.
15. LCD as claimed in claim 12, wherein this first electrode includes the 4th breach of at least one approximate strip that extends along one the 5th direction in addition, accompany one the 4th angle between the 5th direction and this second direction, and the 5th direction differ from this four directions to, when adding this voltage when between this first electrode and this pixel electrode, forming this deflection electric field with meeting, this deflection electric field has one the 4th horizontal deflection electric field component in contiguous the 4th indentation, there, and the 4th horizontal deflection electric field component is perpendicular to the 5th direction, and makes the long axis of liquid crystal molecule of contiguous the 4th breach be diverted to the 5th direction by this second direction.
16. LCD as claimed in claim 15, wherein the 3rd breach is connected with the 4th breach.
17. LCD as claimed in claim 15, wherein this first electrode include in addition at least one along this four directions the 7th projection to the approximate strip that extends, and the 7th projection is located within the 4th breach.
18. LCD as claimed in claim 15, wherein this first electrode includes the 8th projection of at least one approximate strip in addition, and parallels with the 4th breach.
19. a LCD, it includes:

One first substrate, it includes a first surface;

One second substrate, it includes a second surface, and this second surface is parallel relative with the first surface of this first substrate, and definition has a pixel region on this second surface;

One first electrode is located on the first surface of this first substrate;

One pixel electrode is located on the pixel region of this second substrate;

First projection of at least one approximate strip, this first projection major axis is located on this pixel electrode along a first direction; And the liquid crystal molecule filling of a plurality of negative permittivity anisotropy (negative dielectric constantanisotropy) is between this first electrode and this pixel electrode, when not applying a deflection electric field, this long axis of liquid crystal molecule is horizontally arranged between this first electrode and this pixel electrode along a second direction, and has one first angle between this second direction and this first direction;

Wherein when adding a voltage between this first electrode and this pixel electrode the time, can form this deflection electric field between this first electrode and this pixel electrode, then (a) this deflection electric field has one first horizontal deflection electric field component in contiguous this first projection place, and this first horizontal deflection electric field component is perpendicular to this first direction, and make the long axis of liquid crystal molecule of contiguous this first projection turn to parallel this first direction, (b) and this deflection electric field there is no the horizontal deflection electric field component in contiguous this first electrode place, and make the long axis of liquid crystal molecule of contiguous this first electrode maintain this second direction, (c) and the liquid crystal molecule between the first projection place of this first electrode and this pixel electrode is to be diverted to this first direction gradually by this second direction.
20. LCD as claimed in claim 19, wherein this first projection is made of a photoresist layer, a conductive material or a dielectric material.
21. LCD as claimed in claim 19, wherein this pixel electrode includes first breach of at least one approximate strip in addition, and this first breach parallels with this first projection.
22. LCD as claimed in claim 19, wherein the minor axis width of first projection of this pixel electrode is between 5 to 20 microns (μ m).
23. LCD as claimed in claim 22, wherein the minor axis width of this first projection is 10 microns (μ m).
24. LCD as claimed in claim 19, wherein this pixel electrode includes second projection of at least one approximate strip in addition, this second projection major axis extends along a third direction, this third direction differs from this first direction, and accompany one second angle between this third direction and this second direction, when add this voltage between this first electrode and this pixel electrode when forming this deflection electric field, this deflection electric field has one second horizontal deflection electric field component in contiguous this second projection place, and this second horizontal deflection electric field component is one perpendicular to this third direction, and makes the long axis of liquid crystal molecule of contiguous this second projection be diverted to this third direction by this second direction.
25. LCD as claimed in claim 24, wherein this first projection is connected with this second projection.
26. LCD as claimed in claim 24, wherein this second projection is made of a photoresist layer, a conductive material or a dielectric material.
27. LCD as claimed in claim 24, wherein this pixel electrode includes second breach of at least one approximate strip in addition, and this second breach is parallel with this second projection.
28. LCD as claimed in claim 19, wherein this first electrode includes the 3rd projection of at least one approximate strip in addition, the 3rd projection major axis along a four directions to extension, this four directions to and this second direction between accompany a third angle degree, when between this first electrode and this pixel electrode, adding this voltage when forming this deflection electric field, this deflection electric field has one the 3rd horizontal deflection electric field component in contiguous the 3rd projection place, and the 3rd horizontal deflection electric field component be one perpendicular to this four directions to, and the long axis of liquid crystal molecule that makes contiguous the 3rd projection by this second direction be diverted to this four directions to.
29. LCD as claimed in claim 28, wherein this first electrode includes the 3rd breach of at least one approximate strip in addition, and parallels with the 3rd projection.
30. LCD as claimed in claim 28, wherein this first electrode includes the 4th projection of at least one approximate strip in addition, the 4th projection major axis extends along one the 5th direction, the 5th direction differ from this four directions to, accompany one the 4th angle between the 5th direction and this second direction, when add this voltage between this first electrode and this pixel electrode when forming this deflection electric field, this deflection electric field has one the 4th horizontal deflection electric field component in contiguous the 4th projection place, and the 4th horizontal deflection electric field component is one perpendicular to the 5th direction, and makes the long axis of liquid crystal molecule of contiguous the 4th projection be diverted to the 5th direction by this second direction.
31. LCD as claimed in claim 30, wherein the 3rd projection is connected with the 4th projection.
32. LCD as claimed in claim 30, wherein this first electrode includes the 4th breach of at least one approximate strip in addition, and parallels with the 4th projection.