CN1141693C - Liquid crystal display with low driving voltage - Google Patents
Liquid crystal display with low driving voltage Download PDFInfo
- Publication number
- CN1141693C CN1141693C CNB011017120A CN01101712A CN1141693C CN 1141693 C CN1141693 C CN 1141693C CN B011017120 A CNB011017120 A CN B011017120A CN 01101712 A CN01101712 A CN 01101712A CN 1141693 C CN1141693 C CN 1141693C
- Authority
- CN
- China
- Prior art keywords
- electrode
- substrate
- lcd
- liquid crystal
- electric field
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 65
- 239000000758 substrate Substances 0.000 claims abstract description 92
- 238000009413 insulation Methods 0.000 claims abstract description 11
- 230000005684 electric field Effects 0.000 claims description 48
- 238000007373 indentation Methods 0.000 claims description 5
- 230000003068 static effect Effects 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 description 8
- 230000000007 visual effect Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000010287 polarization Effects 0.000 description 4
- 230000001939 inductive effect Effects 0.000 description 3
- 238000002834 transmittance Methods 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 230000005685 electric field effect Effects 0.000 description 2
- 230000031700 light absorption Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 241000276425 Xiphophorus maculatus Species 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
Images
Landscapes
- Liquid Crystal (AREA)
Abstract
The present invention provides a liquid crystal display (LCD) which comprises a first substrate, a second substrate, a first electrode, a second electrode, an insulation layer and a third electrode, wherein the first substrate is provided with a first surface; the second substrate is provided with a second surface, and a pixel area is defined on the second surface. A plurality of liquid crystal molecules with the negative dielectric constant anisotropy are filled between the first electrode and the third electrode, and long axes of the liquid crystal molecules are horizontally arranged between the first electrode and the third electrode.
Description
Technical field
The invention provides the method that a kind of making has wide viewing angle and low driving voltage LCD.
Background technology
LCD has that external form is frivolous, power consumption is few and characteristic such as radiationless pollution, be widely used on the portable type information products such as notebook computer (notebook), PDA(Personal Digital Assistant), even the existing trend that replaces the CRT monitor of traditional 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 conventional liquid crystal 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 Figure 1A and Figure 1B, (Figure 1B is the synoptic diagram of traditional dark attitude of reversing wire LCD 10 to Figure 1B for twist nematic, the TN) synoptic diagram of the bright attitude of LCD 10 for traditional wire of reversing.Shown in Figure 1A, traditional TN-LCD 10 includes one first substrate 12, one second substrate 14 is parallel relative with first substrate 12, one first electrode 16 is located at the below of first substrate 12, one second electrode 18 is located at the top of second substrate 14, one first polaroid 20, one second polaroid (polarizer) 22 is located at the top of first substrate 12 and the below of second substrate 14 respectively, and the liquid crystal molecule 24 of the positive specific inductive capacity anisotropic of a plurality of tools (positive dielectric constant anisotropy) is filled between first substrate 12 and second substrate 14.The absorption axes direction P1 of the polarization absorption of first polaroid 20 (polarizating absorption) is parallel to paper, the absorption axes direction P2 of the polarization absorption of second 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.
Shown in Figure 1A, when first electrode 16 of LCD 10 and second electrode 18 did not apply voltage, liquid crystal molecule 24 was not subjected to electric field influence and is parallel with first polaroid 20, second polaroid 22 respectively.One light (not shown) is injected from the below, produces polarization via second polaroid 22, makes the polarized light of vertical paper be passed second substrate 14.Then polarized light is injected liquid crystal molecule 24, and produces the phenomenon of refraction.Incident light is followed the orientation of liquid crystal molecule 24, and the polarized light absorption 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 first substrate 12, because the direct of travel of polarized light is parallel with the polarized light absorption direction of first polaroid 20, this was the bright attitude of TN-LCD 10.
Shown in Figure 1B, when between first electrode 16 and second electrode 18, applying a voltage, and between first substrate 12 and second substrate 14, produce an electric field.Arrange because its major axis of positive liquid crystal molecule of the positive specific inductive capacity of tool can be inclined to parallel electric field direction 26, so liquid crystal molecule 24 will be arranged with the direction perpendicular to first, second substrate 12,14.Therefore, the direct of travel of light is vertical with first Polarizer 20, and light can't pass through first polaroid 20.Therefore, the observer who is positioned at first 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 Figure 1A accompanies a tilt angle (not shown) with first substrate 12 or second substrate 14 usually.Yet this kind tilt angle but causes liquid crystal molecule 24 asymmetric when dark attitude, makes to make the visual angle of TN-LCD 10 when showing be restricted by light intensity that the observer sees in different angles and inequality.And when showing, because the adhesion of liquid crystal molecule 24 and first, second substrate 12,14, in fact only have 12,14 middle bodies of first, second substrate liquid crystal molecule 24 can with go to fully vertically with first, second substrate 12,14, be close to the liquid crystal molecule 24 of first, second substrate 12,14 and then can possess an angle (not shown) with first, second 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-LCD 10 also is severely limited, even has the different phenomenon of last downwards angle of visibility to produce.Therefore, how can effectively reduce the starting potential of TN-LCD 10, and make liquid crystal molecule 24 can quicken to rotate, add simultaneously with great visual angle, promptly become the big problem that TN-LCD 10 must break through.
Have many technology of improving the visual angle to develop, one of them is applied in the plane torsion type that is on the display (IPS, In-plane Switching mode) LCD, and its structure as shown in Figure 2.Traditional IPS-LCD 50 includes one first substrate 52, one second substrate 54, and it is with parallel relative, one first electrode 56 of first substrate 52 and one second electrode 58 is located on second substrate 54, one first polaroid 53a and one second polaroid 53b are located at the top of first substrate 52 and the below of second substrate 54 and the liquid crystal molecule 57 of the positive specific inductive capacity anisotropic of a plurality of tool (positive dielectric constantanisotropy) respectively and are filled between first substrate 52 and second substrate 54.Its principle of operation is found in U.S. Pat 6,094, in 250, does not repeat them here.Though use plane torsion type LCD can improve the visual angle problem of traditional twist mode LCD, but still can't effectively reduce the trigger voltage of display.In addition, first electrode 56 and second electrode 58 are the opaque metal electrode, will reduce the transmittance of LCD.
Summary of the invention
Therefore fundamental purpose of the present invention is to provide a kind of plane torsion type LCD with low driving voltage.
The object of the present invention is achieved like this, and a kind of LCD promptly is provided, and 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 second electrode is located on the pixel region of this second substrate, and has first breach of an approximate strip that extends along a first direction on this second electrode;
One insulation course is located at this second substrate surface abreast and is covered on this second electrode;
One third electrode is located at this surface of insulating layer and is positioned at this pixel region top, and has second breach of an approximate strip that extends along this first direction on this third electrode, and this first breach and this second breach are crisscross arranged; And
The liquid crystal molecule filling of a plurality of negative permittivity anisotropics is between this first electrode and this third electrode, and this long axis of liquid crystal molecule is to be horizontally arranged between this first electrode and this third electrode along a second direction, and has an angle theta between this second direction and this first direction
1
Wherein when adding a voltage between this first electrode and this third electrode the time, can form a deflection electric field between this first electrode and this third electrode, then (a) this deflection electric field has one first horizontal deflection electric field component in contiguous this second 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 second 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 second indentation, there is to be diverted to this first direction gradually by this second direction.
Description of drawings
Figure 1A and Figure 1B are respectively the synoptic diagram of the traditional bright attitude of reversing the wire LCD and dark attitude.
Fig. 2 is the structural representation of traditional plane torsion type LCD.
Fig. 3 has the synoptic diagram of the LCD of low driving voltage for the present invention.
Fig. 4 is the long strip type breach of LCD of Fig. 3 and the top view of liquid crystal molecule.
Fig. 5 is the diagrammatic cross-section of the LCD of Fig. 3 along second direction.
Fig. 6 is the diagrammatic cross-section of second embodiment of LCD of the present invention.Symbol description
10,50 LCD, 12,52 first substrates
14,54 second substrates, 16,56 first electrodes
18,58 second electrodes
20,53a first polaroid
22,53b second polaroid 24,57 liquid crystal molecules
26 directions of an electric field, 30 LCD
100 first substrates, 200 second substrates
102 first surfaces, 202 second surfaces
104 first electrodes, 206 insulation courses
208 pixel electrodes, 210 public electrodes
112 first polaroids, 212 second polaroids
114 first directions, 214 second directions
216 second breach 217 the 4th breach
218 first lack 219 the 3rd breach
115 third directions, 122 thrusts
120,220 deflection electric fields, 121 directions of an electric field
1201 horizontal electric field component
1202 ll vertical electric field component
40,401,403 liquid crystal molecules
Embodiment
Please refer to Fig. 3, Fig. 3 has the synoptic diagram of the LCD 30 of low driving voltage for the present invention.As shown in Figure 3, LCD 30 of the present invention includes second substrate 200 that first substrate 100 and with a first surface 102 has a second surface 202, second surface 202 is parallel relative with first surface 102, and is that definition has a pixel region (not shown) on the second surface 202.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.
As shown in Figure 3, the first surface 102 of first substrate 100 is provided with one first electrode 104, and the surface of the opposite side relative with first surface 102 then is provided with one first polaroid 112.Then be provided with one second electrode, an insulation course (isolation layer) 206 and one third electrode on the second surface 202 of second substrate 200 in regular turn.Second electrode 208 is used for being used as pixel (pixel) electrode 208, and second electrode 208 is to be located in the pixel region of second substrate 200.Insulation course 206 is to be located at second substrate 200 surface abreast and to be covered on second electrode 208.Third electrode 210 is to be used for being used as public (common) electrode 210, and it is located at insulation course 206 surfaces and is arranged in this pixel region.Wherein, pixel electrode 208 and public electrode 210 are first breach (slit) 218 and second breach 216 that contain along the approximate strip of first direction 114 extensions, first breach and second breach are to be crisscross arranged, so pixel electrode 208 and the projected position of public electrode 210 on the horizontal surface of second substrate 200 also are the configuration that intermeshes.First electrode 104, pixel electrode 208 and public electrode 210 all can be made of a transparent conductive material, can increase the aperture opening ratio and the transmittance of LCD.In addition, another surface relative with second surface 102 is provided with one second polaroid 212 in addition on second substrate 200.
Please refer to Fig. 4 A and Fig. 4 B, it is the top view of the LCD 30 of Fig. 3.Shown in Fig. 4 A, second substrate 200 is provided with a plurality of first and second breach 218,216 and respectively is located on pixel electrode 208 and the public electrode 210 along first direction 114.Be filled with the liquid crystal molecule 40 of a plurality of tool negative permittivity anisotropics (negative dielectric constantanisotropy) between first substrate 100 and second substrate 200, be dispersed between first electrode 104 and the public electrode 210.
When not applying electric field, liquid crystal molecule 40 major axis are to be horizontally arranged between first electrode 104 and the public electrode 210 along a second direction 214, and accompany an angle theta between second direction 214 and the first direction 114
1Wherein, second direction 214 is that the polarisation of second polaroid 212 absorbs direction 214, and the polarisation of first polaroid 112 to absorb direction be third direction 115, third direction 115 is vertical with second direction 214.In addition, LCD 30 is being provided with an on-off element (not shown) on the first surface 102 of first substrate 100 or on the second surface 202 at second substrate 200, a thin film transistor (TFT) (thin film transistor) for example is used for controlling the breakdown action of LCD 30.
Shown in Fig. 4 A, when on-off element is not opened, that is first do not apply a voltage between electrode 104 and the pixel electrode 208 and cause any electric field, this moment, liquid crystal molecule was to arrange according to second direction 214, and it is vertical with the polarisation absorption direction 115 of first polaroid 112, thereby cause light can't pass through first polaroid 112, so the observer will can't see any light and penetrate in LCD 30, this is the dark attitude of LCD 30.And because the orientation of liquid crystal molecule is vertical with the polarisation absorption direction 115 of first polaroid 112 fully, therefore, the dark attitude of LCD of the present invention gained when added electric field not is the dark attitude of very perfect (prefect).Refer again to Fig. 4 B, when on-off element is opened, liquid crystal molecule is subjected to electric field effects, be diverted to the first direction 114 of parallel first breach 218 orientations gradually by original second direction 214, thereby cause the bright attitude of LCD, detailed explanation will be introduced in Fig. 5, at this only in contrast than than usefulness.
Refer again to Fig. 4 C and Fig. 4 D, it shows the mode that another kind of breach distributes.Shown in Fig. 4 C, second substrate 200 is provided with a plurality of first and second breach 218,216 and respectively is located on pixel electrode 208 and the public electrode 210 along first direction 114, is provided with the a plurality of the 3rd and the 4th breach 219,217 simultaneously and respectively is located on pixel electrode 208 and the public electrode 210 to 116 along the four directions.When not applying electric field, liquid crystal molecule 40 major axis are to be horizontally arranged between first electrode 104 and the public electrode 210 along second direction 214.Accompany angle theta between second direction 214 and the first direction 114
1, the four directions to 116 and second direction 214 between accompany angle theta
2When on-off element is opened, shown in Fig. 4 D, liquid crystal molecule is subjected to electric field effects, by original second direction 214 be diverted to respectively 218,219 orientations of parallel the first, the 3rd breach first, the four directions is to 114,116, thereby causes the bright attitude of LCD.
In addition, first polaroid 112 and second polaroid 212 are also interchangeable, just, the polarisation of not necessarily parallel second polaroid 212 of the arrangement of liquid crystal absorbs direction 214 when applying voltage, also might be to arrange with the polarisation absorption direction 115 of parallel first polaroid 112.
Please refer to Fig. 5, Fig. 5 is the diagrammatic cross-section of the LCD 30 of Fig. 3 along second direction 214, when on-off element is unlocked, can be present between first electrode 104 and the pixel electrode 208 once adding pressure drop, and this moment first electrode 104 with public electrode 210 equipotentials, so can formation one be partial to electric field 120 between first electrode 104 and the pixel electrode 208.And between public electrode 210 and the pixel electrode 208, have another deflection electric field 220 and produce.Can near contiguous second breach 216, produce first horizontal electric field component 1201 perpendicular to first direction 114 near the deflection electric field 120 that produces second breach 216 of public electrode 210, and negative liquid crystal molecule 40 is arranged with the direction of vertical electric field with tendency, therefore, after applying voltage, near the liquid crystal molecule 403 second breach 216 of contiguous public electrode 210 can be diverted to the first direction 114 of parallel second breach 216 orientations gradually by original second direction 214.Moreover, also can produce the electric field component 1202 on vertical second substrate 200 surfaces near contiguous second breach 216, and the major axis of these electric field component 1202 equal vertical liquid crystal molecules 40 maintains on the fixing plane liquid crystal molecule 40 and rotates.
In addition, deflection electric field 120 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 214.So the liquid crystal molecule between first electrode 104 and public electrode second breach 216 is to be diverted to first direction 114 gradually by second direction 214, and produces (the TwistNematic of twist mode in similar traditional skill; 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 114 by second direction 214 after being passed through by second polaroid 212 gradually.Absorb direction 115 because the orientation of liquid crystal molecule has not been the polarisation of vertical first polaroid fully, so light can pass through first polaroid 112, and arrive the observer in, this is the bright attitude of LCD 30.
In other words, deflection electric field 120 can be between first substrate 100 and second substrate 200, produce a ll vertical electric field component 1201 perpendicular to first direction 114, making liquid crystal molecule 40 maintain fixed pan rotates, and a horizontal electric field component 1202, second breach 216 that makes liquid crystal molecule 40 be diverted to parallel public electrode is gradually arranged.Therefore, when adding public (common) electrode 210, because another deflection electric field 220 produces simultaneously, the horizontal electric field component 1202 that this deflection electric field 220 can provide another horizontal electric field component (not shown) to add to force liquid crystal molecule to rotate makes near the liquid crystal molecule of breach is easier to be rotated.As for the vertical electric field (not shown) component of electric field 220, because of effect also for making liquid crystal molecule 40 maintain fixed pan rotation, do not go through and illustrate so do not do at this.
The characteristics of LCD 30 of the present invention are to add on the second surface 202 of second substrate 200 into a public electrode 210, with stronger transverse electric field, promotion is more prone to the rotation of liquid crystal molecule 40 near the liquid crystal molecule of indentation, there, and then reduces the driving voltage of LCD 30.Secondly, be formed at the insulation course 206 between public electrode 210 and the pixel electrode 208, also insulation blockings that another layer is provided so that the chance that pixel electrode 208 and first electrode 104 (that is public electrode of first substrate 100) are short-circuited diminishes more.And, as previously mentioned, first electrode 104, pixel electrode 208 and the public electrode 210 that are formed on the LCD 30 are constituted (certain also electric conductivity demand of visible liquid crystal display 30 by a transparent conductive material, and part is selected a non-transparent material for use), therefore the transmittance of LCD 30 increases, and the size of pixel electrode 208 and public electrode 210 also can be dwindled the aperture opening ratio that increases LCD 30 relatively.
Please refer to Fig. 6, Fig. 6 is the diagrammatic cross-section of second embodiment of LCD 30 of the present invention.Upper substrate 100 among the embodiment of earlier figures 3 to Fig. 5 is to be a smooth platy structure, and second embodiment forms a plurality of thrust 122 structures on the first surface 102 of first substrate 100.As shown in Figure 6, include a plurality of thrusts 122 on the first surface 102 of first substrate 100, a plurality of thrusts 122 are signal line (the data line that are arranged on first electrode, demonstration) in the zone, and first electrode 104 promptly is arranged on first substrate 100 comprehensively, and be covered in thrust 122 surfaces, the public electrode 210 on first electrode, 104 meetings, second substrate, 200 surfaces contacts, when being applied in a voltage drop between first electrode 104 and pixel electrode 208, first electrode 104 forms equipotential with public electrode 210.
The advantage of said structure design is to reduce the phenomenon of public signal delay (common signal delay), also therefore can dwindle the width of signal line and public electrode 210.When public electrode 210 reduced width, then aperture opening ratio can increase relatively.Simultaneously, stored static charge on first electrode 104 can see through first electrode 104 and discharge with being electrically connected of public electrode 210, so can prevent static discharge.In addition, because public electrode 210 and pixel electrode 2,080 minutes are close, so will have the electric field 220 of the last one between public electrode 210 and the pixel electrode 208, this electric field also comprises one as the described horizontal component of electric field (not shown) of last embodiment, make liquid crystal molecule 40 quicken to turn to and become the state of bright attitude, reduce the delay when driving.In addition, in this second embodiment, the structure of thrust 122 more can be used to control the gap (cell gap) of first substrate 100 and second substrate 200, thus can avoid in the traditional LCD, because of using shortcomings such as ripples line that spherical filling material derives as spacer and light leak.
Compared to traditional plane torsion type LCD (IPS-LCD), the required driving voltage of LCD of the present invention 30 is less, and therefore the electric power that is consumed still less.Public electrode 210 live widths reduce, and have more dwindled the distribution area, increase aperture area, and then the solution of a high image quality and high-speed driving is provided, and have saved the cost of filling liner in the manufacture process and making lead.In addition, the insulation course in the structure of the present invention more can prevent electric pole short circuit, to solve abnormal bright spot problem on the screen.
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 (11)
1. 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 second electrode is located on the pixel region of this second substrate, and has first breach of an approximate strip that extends along a first direction on this second electrode;
One insulation course is located at this second substrate surface abreast and is covered on this second electrode;
One third electrode is located at this surface of insulating layer and is positioned at this pixel region top, and has second breach of an approximate strip that extends along this first direction on this third electrode, and this first breach and this second breach are crisscross arranged; And
The liquid crystal molecule filling of a plurality of negative permittivity anisotropics is between this first electrode and this third electrode, and this long axis of liquid crystal molecule is to be horizontally arranged between this first electrode and this third electrode along a second direction, and has an angle theta between this second direction and this first direction
1
Wherein when adding a voltage between this first electrode and this third electrode the time, can form a deflection electric field between this first electrode and this third electrode, then (a) this deflection electric field has one first horizontal deflection electric field component in contiguous this second 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 second 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 second indentation, there is to be diverted to this first direction gradually by this second direction.
2. LCD as claimed in claim 1, wherein this LCD also comprises first polaroid, be arranged on the surface of first substrate, in order to cover the light that a part desires to penetrate this first substrate, and second polaroid, be arranged on the surface of second substrate, in order to cover the light that a part desires to penetrate this second substrate.
3. LCD as claimed in claim 1, wherein this second electrode is to be a transparent pixel electrode.
4. LCD as claimed in claim 1, wherein this third electrode is to be a transparent public electrode.
5. LCD as claimed in claim 1, wherein the transverse electric field that is produced between this second electrode and this third electrode is the rotation that is used for quickening to promote liquid crystal molecule, and then reduces the driving voltage of this LCD.
6. LCD as claimed in claim 1, wherein this insulation course between this second electrode and this third electrode is to be used for isolating this second electrode and this third electrode, is short-circuited to avoid this second electrode and this third electrode.
7. LCD as claimed in claim 1 includes the first surface downside that a thrust is located at this first substrate in addition, so that this first electrode is able to be electrically connected this third electrode by this thrust, and makes this first electrode and this third electrode equipotential.
8. LCD as claimed in claim 7, wherein this first electrode is to be electrically connected this third electrode by this thrust, to shorten the time of public signal delay.
9. LCD as claimed in claim 7, wherein this first electrode is to be electrically connected this third electrode by this thrust, to dwindle the width of this public electrode, so aperture opening ratio can increase.
10. LCD as claimed in claim 7, wherein this first electrode is to be electrically connected this third electrode by this thrust, to discharge stored static charge on this first electrode.
11. LCD as claimed in claim 7, wherein this thrust is the size that is used for adjusting the substrate gap of this first substrate and this second substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011017120A CN1141693C (en) | 2001-01-21 | 2001-01-21 | Liquid crystal display with low driving voltage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011017120A CN1141693C (en) | 2001-01-21 | 2001-01-21 | Liquid crystal display with low driving voltage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1367479A CN1367479A (en) | 2002-09-04 |
| CN1141693C true CN1141693C (en) | 2004-03-10 |
Family
ID=4652184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011017120A Expired - Lifetime CN1141693C (en) | 2001-01-21 | 2001-01-21 | Liquid crystal display with low driving voltage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1141693C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101122002B1 (en) * | 2004-12-31 | 2012-02-29 | 엘지디스플레이 주식회사 | Liquid Crystal Display Panel and Method of Driving The Same |
| JP4639968B2 (en) * | 2005-05-31 | 2011-02-23 | カシオ計算機株式会社 | Liquid crystal display device |
| CN100462826C (en) * | 2006-04-24 | 2009-02-18 | 友达光电股份有限公司 | Picture element and liquid crystal display panel |
| CN101373290B (en) * | 2007-08-22 | 2010-06-16 | 比亚迪股份有限公司 | LCD device |
| CN103412448B (en) | 2013-07-29 | 2016-01-06 | 北京京东方光电科技有限公司 | Liquid crystal panel, display device and manufacture thereof and driving method |
-
2001
- 2001-01-21 CN CNB011017120A patent/CN1141693C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CN1367479A (en) | 2002-09-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1869773A (en) | Liquid crystal device and electronic apparatus | |
| KR101050348B1 (en) | Transverse electric field liquid crystal display device | |
| US6665041B2 (en) | Liquid crystal on silicon panel in single-domain vertical alignment mode | |
| CN1713036A (en) | Liquid crystal display device | |
| CN1288491C (en) | In-plane switching mode liquid crystal display device | |
| CN1201063A (en) | Method of producing two domains within liquid crystal layer, and liquid crystal display device and method of manufacturing | |
| CN1949349A (en) | Liquid crystal display device and driving method thereof | |
| CN1216830A (en) | Liquid crystal cell employing thin wall for pre-tilt control | |
| CN1696769A (en) | Plane switching mode liquid crystal display device having improved contrast ratio | |
| CN1786798A (en) | Liquid crystal display | |
| CN1834758A (en) | In-plane switching mode liquid crystal display device and fabrication method thereof | |
| CN1916702A (en) | Liquid crystal displays | |
| CN103529607A (en) | Liquid crystal display panel, display device and driving method of display device | |
| WO2016145681A1 (en) | Liquid crystal display panel | |
| CN102650778A (en) | Semi-transparent and semi-reflective blue phase liquid crystal display device | |
| JP2000214466A (en) | Bistable liquid crystal display device having high reflectance | |
| CN1514294A (en) | Liquid crystal display | |
| CN1605917A (en) | In-plane switching mode liquid crystal display device and fabrication method thereof | |
| CN101093330B (en) | In-plane switching active matrix liquid crystal display apparatus | |
| CN1310070C (en) | Liquid crystal display device | |
| KR100827459B1 (en) | In Plane Field Mode Liquid Crystal Display | |
| CN1141614C (en) | Wide-viewing angle liquid crystal display | |
| CN1534331A (en) | Liquid crystal apparatus and electronic device | |
| CN1141693C (en) | Liquid crystal display with low driving voltage | |
| CN109581758B (en) | Display panel and display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: YOUDA PHOTOELECTRIC CO., LTD. Free format text: FORMER OWNER: DAQI TECHNOLOGY CO., LTD. Effective date: 20030709 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20030709 Address after: Hsinchu Taiwan Science Industry Park Applicant after: AU Optronics Corporation Address before: Hsinchu Taiwan Science Industry Park Applicant before: Daqi Science and Technology Co., Ltd. |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20040310 |
|
| CX01 | Expiry of patent term |