CN1549034A - Active matrix type liquid crystal display device - Google Patents
Active matrix type liquid crystal display device Download PDFInfo
- Publication number
- CN1549034A CN1549034A CNA031266681A CN03126668A CN1549034A CN 1549034 A CN1549034 A CN 1549034A CN A031266681 A CNA031266681 A CN A031266681A CN 03126668 A CN03126668 A CN 03126668A CN 1549034 A CN1549034 A CN 1549034A
- Authority
- CN
- China
- Prior art keywords
- liquid crystal
- substrate
- display device
- active matrix
- crystal display
- 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.)
- Granted
Links
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 88
- 239000011159 matrix material Substances 0.000 title abstract 2
- 239000000758 substrate Substances 0.000 claims abstract description 60
- 238000009413 insulation Methods 0.000 claims description 15
- 238000002161 passivation Methods 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 5
- 230000002779 inactivation Effects 0.000 abstract 1
- 230000005684 electric field Effects 0.000 description 13
- 230000000694 effects Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 239000012535 impurity Substances 0.000 description 4
- 230000010287 polarization Effects 0.000 description 3
- 239000012780 transparent material Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 206010047571 Visual impairment Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- MRNHPUHPBOKKQT-UHFFFAOYSA-N indium;tin;hydrate Chemical compound O.[In].[Sn] MRNHPUHPBOKKQT-UHFFFAOYSA-N 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
Images
Landscapes
- Liquid Crystal (AREA)
Abstract
The active matrix LCD includes the first substrate and the second substrate set oppositely, one liquid crystal layer set between the first substrate and the second substrate, at least one orientation layer set between the first substrate and the second substrate, insulating layer set on the second substrate and the side of the common electrodes, pixel electrodes set on the insulating layer, and inactivation layer set on the insulating layer and the side of the pixel electrodes. The common electrodes and the pixel electrodes are set alternately in the equal distance to the liquid crystal layer and has conducting film set.
Description
[technical field]
The present invention relates to a kind of LCD, relate in particular to a kind of active matrix-type liquid crystal display device.
[background technology]
Liquid crystal in the LCD itself is not had a characteristics of luminescence, is to adopt the electric field controls liquid crystal molecule to reverse and realize passing through or not passing through of light, thereby reaches the purpose of demonstration.In conventional liquid crystal, form electrode on the surface of two substrate of glass, to form the electric field that the control liquid crystal molecule reverses, this electrode uses transparent material, and the electrode of two substrates is oppositely arranged, thereby forms and the perpendicular electric field of substrate surface.Because liquid crystal molecule has dielectric anisotropy and electricity is led anisotropy, therefore under the control of this electric field, liquid crystal molecular orientation will be perpendicular to substrate surface, but because the influence of physical force such as interaction force between liquid crystal molecule and gravity, make that the orientation of liquid crystal molecule can not be fully perpendicular to substrate surface, thereby will have influence on the display effect of LCD.
A kind of prior art LCD as depicted in figs. 1 and 2, this LCD 1 comprises first substrate 11 and second substrate 12 that is oppositely arranged, one liquid crystal layer 17 between this first substrate 11 and second substrate 12, two lay respectively at this first substrate 11 and second substrate 12 and the different side of liquid crystal layer and the orthogonal polarizing appliance 110 of polarizing axis (Polarizing Axis) and 120, one is arranged on the insulation course 14 of second substrate, 12 contiguous liquid crystal layer one sides, be arranged on the common electrode 15 of 14 of second substrate 12 and insulation courses, one is arranged on the passivation layer 100 of insulation course 14 contiguous liquid crystal layer 17 1 sides, be arranged on signal wire 13 and pixel electrode 16 between insulation course 14 and the passivation layer 100, one is arranged on the both alignment layers 102 of passivation layer 100 contiguous liquid crystal layer 17 1 sides, one is arranged on the colored filter 19 of substrate 11 contiguous liquid crystal layer 17 1 sides, one is arranged on the colored filter 19 and the both alignment layers 101 adjacent with liquid crystal layer 17, wherein, this common electrode 15 and pixel electrode 16 spaces are provided with, this both alignment layers 101 and 102 is used to control the initial orientation of liquid crystal molecule 170, and this both alignment layers 101 is identical with the polarizing axis direction of polarizing appliance 120 with 102 orientation, have at least a substrate to adopt transparent material to make in this first substrate 11 and second substrate 12, this liquid crystal layer 17 is by forming to row (Nematic) type liquid crystal, and this LCD 1 realizes colored the demonstration by colored filter 19.
Please consulting Fig. 1 once more, is not during making alive, the synoptic diagram of this LCD 1 duty of living in.Under this state, owing to be not subjected to electric field action, then the orientation of this liquid crystal molecule 170 is identical with the orientation of both alignment layers 101 and 102, and this both alignment layers 101 is identical with the polarizing axis direction of polarizing appliance 120 with 102 orientation, therefore, the linearly polarized light (figure does not show) that enters liquid crystal layer 17 through polarizing appliance 120 just in time can pass through this liquid crystal layer 17, and polarization state does not change.In addition, because polarizing appliance 110 is vertical mutually with 120 polarizing axis, so this linearly polarized light can not pass through polarizing appliance 110, promptly this LCD 1 is in dark attitude.
Please consult Fig. 2 once more, when being making alive, the synoptic diagram of this LCD 1 duty of living in.This common electrode 15 forms the electric field 18 that is basically parallel to first substrate 11 and second substrate 12 with pixel electrode 16, because of liquid crystal molecule 170 has dielectric anisotropy and electricity is led anisotropy, so under electric field 18 effects, the orientation of this liquid crystal molecule 170 is consistent with the direction of this electric field 18, but, there is certain angle in the polarizing axis direction of the direction of electric field 18 and polarizing appliance 120, then the linearly polarized light (figure does not show) by polarizing appliance 120 will produce birefringence when arriving liquid crystal molecule 170, make this linear polarization polarization state of light change, and polarizing appliance 110 is vertical mutually with 120 polarizing axis, so the part component of this linearly polarized light will be by polarizing appliance 110, promptly this LCD 1 is in bright attitude.
As mentioned above, this employing is parallel to the method that the electric field controls liquid crystal molecule of substrate reverses and is called " in-plane changes method " (In Plane Switching, IPS), should " in-plane changes method " be specifically designed to active matrix-type liquid crystal display device, and adopt the LCD 1 of this method to have broader angle of visibility than conventional liquid crystal.
But, there are insulation course 14, passivation layer 100 and both alignment layers 102 between this common electrode 15 and the liquid crystal layer 17, and there are passivation layer 100 and both alignment layers 102 between this pixel electrode 16 and the liquid crystal layer 17, this shows, common electrode 15 is different apart from the thickness of liquid crystal layer 17 with pixel electrode 16 apart from the thickness of liquid crystal layer 17, then, the amount of force of charged corpuscle is different in 16 pairs of liquid crystal layers 17 of this common electrode 15 and pixel electrode.Because liquid crystal layer 17 can adsorb the charged corpuscle impurity in the surrounding environment, and in the driving process, the charged polarity of this common electrode 15 and pixel electrode 16 constantly changes, along with driving time increases, how many charged corpuscles that residues in common electrode 15 and pixel electrode 16 differs, to cause the intensity of the electric field 18 of common electrode 15 and 16 formation of pixel electrode to weaken, thereby, make the liquid crystal molecule speed and the quantity that under 18 effects of this electric field, twist descend, promptly produce afterimage phenomenon, so the image display effect of this LCD 1 is not good.
In sum, provide the preferable LCD of a kind of image display effect real for necessary.
[summary of the invention]
Adopt the not good defective of prior art LCD image display effect for overcoming, the invention provides the preferable active matrix-type liquid crystal display device of a kind of image display effect.
The technical scheme that technical solution problem of the present invention is adopted is: a kind of active matrix-type liquid crystal display device is provided, it comprises first substrate and second substrate that is oppositely arranged, one is arranged on the liquid crystal layer between this first substrate and second substrate, at least one both alignment layers that is arranged between this first substrate and second substrate, be arranged on this second suprabasil common electrode, be arranged in this second substrate and the insulation course of common electrode side, be arranged on the pixel electrode on this insulation course, be arranged on this insulation course passivation layer with the pixel electrode side, wherein, this common electrode and pixel electrode space are provided with, and the two equates that with the spacing of liquid crystal layer this common electrode and pixel electrode are provided with conducting film.
Compared to prior art, the invention has the beneficial effects as follows: this common electrode and pixel electrode equate with the spacing of liquid crystal layer in the active matrix-type liquid crystal display device of the present invention, thereby, when having charged corpuscle impurity in the liquid crystal layer, this common electrode is identical to the amount of force of this charged corpuscle with pixel electrode, and, the polarity of this common electrode and pixel electrode changes in time, so, increase along with driving time, this charged corpuscle can not accumulate in this common electrode or pixel electrode one side, can prevent to produce image residue, thereby obtains preferable image display effect; In addition, this common electrode and pixel electrode are provided with conducting film, can be used for conduction and protect this common electrode and pixel electrode.
[description of drawings]
Fig. 1 is the not partial schematic diagram of duty of living in during making alive of a kind of prior art active matrix-type liquid crystal display device.
The partial schematic diagram of duty of living in when Fig. 2 is an active matrix-type liquid crystal display device making alive shown in Figure 1.
The partial schematic diagram of duty when Fig. 3 is the active matrix-type liquid crystal display device first embodiment making alive of the present invention.
The partial schematic diagram of duty when Fig. 4 is the active matrix-type liquid crystal display device second embodiment making alive of the present invention.
The partial schematic diagram of duty when Fig. 5 is active matrix-type liquid crystal display device the 3rd an embodiment making alive of the present invention.
[embodiment]
First embodiment of active matrix-type liquid crystal display device of the present invention as shown in Figure 3, this LCD 2 comprises first substrate 21 and second substrate 22 that is oppositely arranged, one liquid crystal layer 27 between this first substrate 21 and second substrate 22, two lay respectively at this first substrate 21 and second substrate 22 and liquid crystal layer 27 different sides and the orthogonal polarizing appliance 210 of polarizing axis and 220, be arranged on the common electrode 25 in this second substrate 22, be arranged in this second substrate 22 insulation course 24 with these common electrode 25 sides, be arranged on the pixel electrode 26 on this insulation course 24, be arranged on the insulation course 24 and the passivation layer 200 of these pixel electrode 26 sides, be arranged on the signal wire 23 of 200 of this passivation layers, one is arranged on the both alignment layers 202 of these passivation layer 200 contiguous liquid crystal layer 27 1 sides.
Wherein, this common electrode 25 and pixel electrode 26 spaces are provided with, and the two is all near both alignment layers 202, and conducting film 250 is set at this common electrode 25 and pixel electrode 26 and 202 of this both alignment layers, this common electrode 25 and pixel electrode 26 form electric field 28, this both alignment layers 202 is used to control the initial orientation of liquid crystal molecule 270, and the orientation of this both alignment layers 202 is identical with the polarizing axis direction of polarizing appliance 220, have at least a substrate to adopt transparent material to make in this first substrate 21 and second substrate 22, this common electrode 25 adopts ITO or gold with pixel electrode 26, silver, metallic conduction materials such as copper are made, and this liquid crystal layer 27 adopts nematic crystal to make.In addition, this conducting film 250 can adopt ITO (Indium TinOxide, tin indium oxide), ACF (Anisotropic Conductive Film, anisotropy conducting film) or metallic conduction materials such as gold, silver, copper to make.
As mentioned above, spacing between this common electrode 25 and pixel electrode 26 and the liquid crystal layer 27 is the thickness of this both alignment layers 202 and ITO film 250, promptly this common electrode 25 and pixel electrode 26 equate with the spacing of liquid crystal layer 27, therefore, when having charged corpuscle impurity in the liquid crystal layer 27, the amount of force of 26 pairs of these charged corpuscles of this common electrode 25 and pixel electrode is identical, again because the polarity of this common electrode 25 and pixel electrode 26 changes in time, so, increase along with driving time, this charged corpuscle can not accumulate in this common electrode 25 or pixel electrode 26 1 sides, thereby prevents to produce image residue.
Second embodiment of active matrix-type liquid crystal display device of the present invention as shown in Figure 4, this LCD 3 is compared with the described LCD 2 of first embodiment, difference is: this LCD 3 adopts the both alignment layers 301 that is arranged on first substrate, 31 contiguous liquid crystal layer 37 1 sides to replace the both alignment layers 202 of this LCD 2, and a colored filter 39 is set between this first substrate 31 and both alignment layers 301, and the setting of other element is identical with LCD 2.As mentioned above, the common electrode 35 of this LCD 3 and pixel electrode 36 and liquid crystal layer 37 be interval one an ITO film 350 all, therefore, when having charged corpuscle impurity in the liquid crystal layer 37, the amount of force of 36 pairs of these charged corpuscles of this common electrode 35 and pixel electrode is identical, again because, this common electrode 35 changes in time with the polarity of pixel electrode 36, so, increase along with driving time, this charged corpuscle can not accumulate in this common electrode 35 or pixel electrode 36 1 sides, thereby prevents to produce image residue.In addition, this LCD 3 realizes colored the demonstration by colored filter 39.
The 3rd embodiment of active matrix-type liquid crystal display device of the present invention as shown in Figure 5, this LCD 4 is compared with the described LCD 2 of first embodiment, and difference is: this LCD 4 comprises that further a both alignment layers 401 and that is arranged on contiguous liquid crystal layers 47 1 sides of first substrate 41 is arranged on the colored filter 49 of 401 of this first substrate 41 and both alignment layers.The principle that this LCD 4 prevents to produce image residue is identical with LCD 2, and this LCD 4 can realize colored the demonstration by colored filter 49.
But it is described that active matrix-type liquid crystal display device of the present invention is not limited to above-mentioned embodiment, and for example: this substrate can adopt glass or silicon dioxide to make; This common electrode and pixel electrode can parallel or non-parallel settings; This insulation course can adopt insulating material such as monox or silicon nitride to make; This LCD 2 can adopt colored filter to realize colour etc.
Claims (10)
1. active matrix-type liquid crystal display device, it comprises first substrate and second substrate that is oppositely arranged, one is arranged on the liquid crystal layer between this first substrate and second substrate, at least one both alignment layers that is arranged between this first substrate and second substrate, be arranged on this second suprabasil common electrode, be arranged in this second substrate and the insulation course of common electrode side, be arranged on the pixel electrode on this insulation course, be arranged on this insulation course and the passivation layer of pixel electrode side, wherein, this common electrode and pixel electrode space are provided with, and the two equates that with the spacing of liquid crystal layer this common electrode and pixel electrode are provided with conducting film.
2. active matrix-type liquid crystal display device as claimed in claim 1 is characterized in that: this both alignment layers is arranged on contiguous liquid crystal layer one side of this first substrate.
3. active matrix-type liquid crystal display device as claimed in claim 2 is characterized in that: this active matrix-type liquid crystal display device further comprises a colored filter, and this colored filter is arranged between first substrate and the both alignment layers.
4. active matrix-type liquid crystal display device as claimed in claim 2 is characterized in that: this active matrix-type liquid crystal display device further comprises a both alignment layers, and this both alignment layers is arranged on contiguous liquid crystal layer one side of passivation layer.
5. active matrix-type liquid crystal display device as claimed in claim 1 is characterized in that: this both alignment layers is arranged on contiguous liquid crystal layer one side of passivation layer.
6. active matrix-type liquid crystal display device as claimed in claim 5 is characterized in that: this active matrix-type liquid crystal display device further comprises a colored filter, and this colored filter is arranged on contiguous liquid crystal layer one side of this first substrate.
7. active matrix-type liquid crystal display device as claimed in claim 6 is characterized in that: this active matrix-type liquid crystal display device further comprises a both alignment layers, and this colored filter is arranged on a side of the contiguous liquid crystal layer of this colored filter.
8. active matrix-type liquid crystal display device as claimed in claim 1 is characterized in that: this conducting film adopts the ITO material to make.
9. active matrix-type liquid crystal display device as claimed in claim 1 is characterized in that: this conducting film adopts the ACF material to make.
10. as active matrix-type liquid crystal display device as claimed in claim 1, it is characterized in that: this conducting film adopts metallic conduction material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03126668 CN1549034B (en) | 2003-05-23 | 2003-05-23 | Active matrix type liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03126668 CN1549034B (en) | 2003-05-23 | 2003-05-23 | Active matrix type liquid crystal display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1549034A true CN1549034A (en) | 2004-11-24 |
| CN1549034B CN1549034B (en) | 2010-05-12 |
Family
ID=34321959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03126668 Expired - Fee Related CN1549034B (en) | 2003-05-23 | 2003-05-23 | Active matrix type liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1549034B (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW354380B (en) * | 1995-03-17 | 1999-03-11 | Hitachi Ltd | A liquid crystal device with a wide visual angle |
| JP4446577B2 (en) * | 2000-09-06 | 2010-04-07 | エーユー オプトロニクス コーポレイション | Display panel, display device |
| JP2003140188A (en) * | 2001-11-07 | 2003-05-14 | Hitachi Ltd | Liquid crystal display |
-
2003
- 2003-05-23 CN CN 03126668 patent/CN1549034B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1549034B (en) | 2010-05-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2256542A1 (en) | Liquid crystal display device with controllable viewing angle and driving method thereof | |
| CN2757176Y (en) | Liquid crystal display device | |
| CN2757172Y (en) | Liquid crystal display device | |
| CN1549034B (en) | Active matrix type liquid crystal display device | |
| CN1549010B (en) | Active matrix type liquid crystal display device | |
| CN1553426A (en) | Active matrix liquid-crystal displaying devices | |
| CN1949064A (en) | Liquid crystal dispalying device | |
| CN100419545C (en) | Active matrix type LCD | |
| CN1797139A (en) | Switch inside plane type LCD device | |
| CN2735392Y (en) | Active matrix type liquid crystal display device | |
| CN2743862Y (en) | Multi-zone vertical orientation mode liquid crystal display | |
| CN100337149C (en) | Active matrix type liquid crystal display | |
| CN2757173Y (en) | Liquid crystal display device | |
| CN101201479A (en) | Liquid crystal display apparatus | |
| CN2757175Y (en) | Active matrix liquid crystal display device | |
| CN2881704Y (en) | Liquid crystal display | |
| CN2735393Y (en) | Active matrix type liquid crystal display | |
| CN100356252C (en) | Active matrix type liquid crystal display device | |
| TWI283786B (en) | An active matrix liquid crystal display | |
| CN2735376Y (en) | Active matrix type liquid crystal display | |
| CN2743865Y (en) | Multi-zone vertical orientation mode liquid crystal display | |
| CN2743872Y (en) | Transverse electric field liquid crystal display | |
| CN1534332A (en) | Active Matrix Liquid Crystal Display | |
| CN2735378Y (en) | Multi-domain vertical alignment mode LCD | |
| CN1704822A (en) | Plane internally switched type liquid crystal display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100512 Termination date: 20160523 |