CN2757173Y - Liquid crystal display device - Google Patents
Liquid crystal display device Download PDFInfo
- Publication number
- CN2757173Y CN2757173Y CN 200420095308 CN200420095308U CN2757173Y CN 2757173 Y CN2757173 Y CN 2757173Y CN 200420095308 CN200420095308 CN 200420095308 CN 200420095308 U CN200420095308 U CN 200420095308U CN 2757173 Y CN2757173 Y CN 2757173Y
- Authority
- CN
- China
- Prior art keywords
- liquid crystal
- substrate
- crystal indicator
- electrode
- spaced walls
- 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 93
- 239000012780 transparent material Substances 0.000 claims abstract description 6
- 230000005611 electricity Effects 0.000 claims abstract description 3
- 239000000758 substrate Substances 0.000 claims description 54
- 238000009413 insulation Methods 0.000 claims description 5
- 239000011521 glass Substances 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 0.000 claims description 3
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 claims description 2
- 235000012239 silicon dioxide Nutrition 0.000 claims description 2
- 239000000377 silicon dioxide Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims 1
- 239000002184 metal Substances 0.000 claims 1
- 238000005192 partition Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 9
- 230000005684 electric field Effects 0.000 description 34
- 230000010287 polarization Effects 0.000 description 30
- 230000015572 biosynthetic process Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000004020 conductor Substances 0.000 description 3
- 230000002950 deficient Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 230000005484 gravity Effects 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
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
Images
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- Liquid Crystal (AREA)
Abstract
The utility model relates to a liquid crystal display device which comprises a first base, a second base, a liquid crystal layer, a plurality of common electrodes and pixel electrodes, and a plurality of interval walls, wherein the first base and the second base are oppositely arranged; the liquid crystal layer is positioned between the first base and the second base; the common electrodes and the pixel electrodes are parallelly arranged on one side of the second base near the liquid crystal layer; the interval walls are arranged on the common electrodes and the pixel electrodes, and can conduct electricity; at least one of the two bases is made of transparent material, and an insulating layer is arranged between each common electrode and each pixel electrode. The liquid crystal display device of the utility model can eliminate residual images to obtain good effect, and can also reduce driving voltage synchronously.
Description
[technical field]
The utility model relates to a kind of LCD, relates in particular to a kind of liquid crystal indicator.
[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 electrically, 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 sees also the United States Patent (USP) the 5th of bulletin on February 4th, 1997,600, No. 464, as depicted in figs. 1 and 2, this LCD 1 comprises two substrates 11 and 12 that are provided with relatively, one is positioned at two substrates 11 and 12 s' liquid crystal layer (indicating), two polarization directions are mutually vertical and lay respectively at this substrate 11 and 12 and the polarizing appliance 13 and 14 of the different side of liquid crystal layer, a plurality of substrate 12 an adjacent side with liquid crystal layer and common electrode 15 that is parallel to each other and pixel electrodes 16 that are arranged on, one is adjacent with liquid crystal layer and be used to control the both alignment layers 100 of liquid crystal molecular orientation, a plurality of spaced walls (figure does not show) and drive units (figure does not show) that are arranged between two substrates, wherein, the orientation of this both alignment layers 100 is identical with the polarization direction of polarizing appliance 14, there are certain angle in the direction of this common electrode 15 and pixel electrode 16 formation horizontal component of electric fields 18 and the polarization direction of polarizing appliance 14, at least one substrate is to adopt transparent material to make in this two substrate 11 and 12, this liquid crystal layer is to adopt to row (Nematic) type liquid crystal to make, and these a plurality of common electrodes 15 and pixel electrode 16 all adopt transparent conductive material to make.Because of this common electrode 15 and pixel electrode 16 are set in parallel in the substrate 12, so the electric field 18 that common electrode 15 and pixel electrode 16 form will be parallel to substrate 11 and 12, 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 mainly used in liquid crystal indicator, and adopt the LCD 1 of this method to have broader angle of visibility than conventional liquid crystal.
Fig. 1 is not during making alive, the synoptic diagram of this LCD 1 duty of living in.Because the orientation of both alignment layers 100 is identical with the polarization direction of polarizing appliance 14, so, under this state, the orientation of liquid crystal molecule 17 molecular axiss is identical with the polarization direction of polarizing appliance 14, thereby the linearly polarized light (figure does not show) that enters liquid crystal layer through polarizing appliance 14 just in time can pass through liquid crystal layer, and polarization state does not change; Because polarizing appliance 13 is vertical mutually with 14 polarization direction, so this linearly polarized light can not pass through polarizing appliance 13, promptly this LCD 1 is in dark attitude again.
See also Fig. 2, when being making alive, the synoptic diagram of this LCD 1 duty of living in.Under this state, this common electrode 15 and pixel electrode 16 form the electric field 18 that is basically parallel to substrate 11 and 12, because of liquid crystal molecule 17 has electrically certain, so under electric field 18 effects, the orientation of this liquid crystal molecule 17 is consistent with the direction of this electric field 18, but, there is certain angle in the polarization direction of the direction of electric field 18 and polarizing appliance 14, then the linearly polarized light (figure does not show) by polarizing appliance 14 will produce birefringence when arriving liquid crystal molecule 17, thereby this linear polarization polarization state of light will change, and this polarizing appliance 13 is vertical mutually with 14 polarization direction, so the part component of this linearly polarized light will be by polarizing appliance 13, and promptly this LCD 1 is in bright attitude.
But, this common electrode 15 is not parallel to substrate 11 and 12 fully with the electric field 18 that pixel electrode 16 forms, but curved distribution, and the orientation of liquid crystal molecule 17 should be identical with the tangential direction of electric field 18, thus the orientation of liquid crystal molecule 17 everywhere can not be parallel to substrate 11 and 12 fully; And it is far away from common electrode 15 and pixel electrode 16, a little less than the intensity of this electric field 18 heals, the orientation that need provide high driving voltage could make most liquid crystal molecules 17 is parallel to substrate 11 and 12, and electric field 18 can't reach the space that all liquid crystal molecules 17 occupy, thereby still have part liquid crystal molecule 17 under the effect of electric field 18, not twist, promptly exist part to enter the linearly polarized light of liquid crystal layer through polarizing appliance 14 through behind the liquid crystal layer, its polarization state will not change, be about to the partial line polarized light and can not have passed through this polarizing appliance 13, thereby will influence the brightness of this LCD 1.
In addition, for increasing the aperture opening ratio of this LCD 1, need the horizontal range of 16 of increase common electrode 15 and pixel electrodes, this design must provide higher driving voltage could make electric field 18 reach can drive the intensity that liquid crystal molecule 17 reverses.
In sum, provide the LCD that a kind of display effect is good and driving voltage is low real for necessary.
[utility model content]
Adopt prior art liquid crystal display displays weak effect and the high defective of driving voltage for solving, the utility model provides the liquid crystal indicator that a kind of display effect is good, driving voltage is low.
The technological means of the utility model technical solution problem is as follows: a kind of liquid crystal indicator is provided, it comprises that first substrate that is oppositely arranged and second substrate, are positioned at liquid crystal layer between this two end, a plurality of being arranged in parallel in the common electrode of contiguous liquid crystal layer one side of second substrate and pixel electrode, a plurality of conductive spaced walls that is arranged on this common electrode and the pixel electrode, wherein a few substrate is made with transparent material in this two substrate, is provided with insulation course between this common electrode and pixel electrode.
Compared to prior art, liquid crystal indicator of the present utility model adopts a plurality of spaced walls that are arranged on this common electrode and the pixel electrode, this spaced walls can be conducted electricity, when making alive, form the electric field that is parallel to two substrates fully and is evenly distributed between these a plurality of spaced walls, thereby make the orientation of liquid crystal molecule can be parallel to two substrates fully, can not have the defective of prior art LCD.In addition, depress in same electrical, the formed electric field intensity of these a plurality of spaced walls is much larger than the electric field intensity of prior art LCD, so liquid crystal indicator of the present utility model can be used low voltage drive, and the quantity that can reduce common electrode and pixel electrode is to obtain high aperture.
[description of drawings]
Fig. 1 is the not working state schematic representation during making alive of a kind of prior art LCD.
Working state schematic representation when Fig. 2 is a LCD making alive shown in Figure 1.
Fig. 3 is the not working state schematic representation during making alive of the utility model liquid crystal indicator first embodiment.
Fig. 4 is the cut-open view of liquid crystal indicator spaced walls shown in Figure 3.
Working state schematic representation when Fig. 5 is a liquid crystal indicator making alive shown in Figure 3.
Working state schematic representation when Fig. 6 is the utility model liquid crystal indicator second embodiment making alive.
[embodiment]
Seeing also Fig. 3 to Fig. 5, is first embodiment of the utility model liquid crystal indicator.This liquid crystal indicator 2 comprises two substrates 21 and 22 that are provided with relatively, one liquid crystal layer (indicate) between this two substrate 21 and 22, two lay respectively at this substrate 21 and 22 and the orthogonal polarizing appliance 23 of different side of liquid crystal layer and polarization direction and 24, a plurality of being arranged in parallel at the common electrode 25 and the pixel electrode 26 of substrate 22 contiguous liquid crystal layer one sides, a plurality of conductive spaced walls 29 that are arranged on this common electrode 25 and the pixel electrode 26, one is adjacent with liquid crystal layer and be used to control the both alignment layers 200 of liquid crystal molecular orientation.Wherein, the orientation of this both alignment layers 200 is identical with the polarization direction of polarizing appliance 24, there are certain angle in the direction of this common electrode 25 and pixel electrode 26 formation horizontal component of electric fields 28 and the polarization direction of polarizing appliance 24, the liquid crystal molecule 27 of this liquid crystal layer is a nematic crystal, have at least one to be to adopt transparent material to make in this two substrate 21 and 22, these a plurality of common electrodes 25 and pixel electrode 26 all adopt ITO (Indium Tin Oxide, tin indium oxide) transparent conductive material is made, and this common electrode 25 and 26 of pixel electrodes are provided with insulation course (indicating).
This each next door 29 comprises an interval body 291 and the conducting film 292 that is plated on these interval body 291 surfaces, and this conducting film 292 is ITO nesa coatings, and this interval body 291 is right cylinder or rectangular parallelepiped, and it generally is to adopt glass to make.
Not during making alive, because the orientation of both alignment layers 200 is identical with the polarization direction of polarizing appliance 24, so, under this state, the orientation of liquid crystal molecule 27 molecular axiss is identical with the polarization direction of polarizing appliance 24, just in time can pass through liquid crystal layer thereby process polarizing appliance 24 enters the linearly polarized light (figure does not show) of liquid crystal layer, and polarization state does not change, because of polarizing appliance 23 is vertical mutually with 24 polarization direction, so this linearly polarized light can not pass through polarizing appliance 23, promptly this LCD 2 is in dark attitude.
During making alive, 29 formation of 26 of this common electrode 25 and pixel electrodes and a plurality of spaced walls are basically parallel to the electric field 28 of substrate 21 and 22, under electric field 28 effects, the orientation of this liquid crystal molecule 27 is consistent with the direction of this electric field 28, but, there is certain angle in the polarization direction of the direction of electric field 28 and polarizing appliance 24, then the linearly polarized light (figure does not show) by polarizing appliance 24 will produce birefringence when arriving liquid crystal molecule 27, thereby this linear polarization polarization state of light will change, and this polarizing appliance 23 is vertical mutually with the polarization direction of polarizing appliance 24, thereby the part component of this linearly polarized light will be by polarizing appliance 23, and promptly this LCD 2 is in bright attitude.In addition, compare with the electric field of prior art LCD, under the same driving voltage, the electric field intensity of this electric field 28 is much larger than the electric field intensity of prior art LCD, so this liquid crystal indicator 2 can drive with low voltage, simultaneously, can increase the spacing (i.e. the spacing of these a plurality of common electrodes 25 and pixel electrode 26) of these a plurality of spaced walls 29 to a certain extent, in other words, just can reduce the quantity of common electrode 25 and pixel electrode 26, thereby can increase the aperture opening ratio of this LCD 2.
Second embodiment of the utility model liquid crystal indicator as shown in Figure 6, this LCD 3 comprises first substrate 31 and second substrate 32 that is oppositely arranged, one is positioned at the liquid crystal layer (not indicating) between this two substrate, two lay respectively at substrate 31 and 32 and the orthogonal polarizing appliance 33 of different side of liquid crystal layer and polarization direction and 34, a plurality of being arranged in parallel at the common electrode 35 and the pixel electrode 36 of second substrate, 32 contiguous liquid crystal layer one sides, one is arranged on the colored filter (Color FilterFilm) 30 of first substrate, 31 contiguous liquid crystal layer one sides, a plurality of conductive spaced walls 39 that are arranged on this common electrode 35 and the pixel electrode 36, a plurality ofly be arranged between this spaced walls 39 and first substrate 31 and the counter electrode 301 that links to each other with this spaced walls 39, one is adjacent with liquid crystal layer and be used to control the both alignment layers 300 and a drive unit (figure does not show) of liquid crystal molecule 37 orientations.Wherein, the orientation of this both alignment layers 300 is identical with the polarization direction of polarizing appliance 34, there are certain angle in the direction of this common electrode 35 and pixel electrode 36 formation horizontal component of electric fields 38 and the polarization direction of polarizing appliance 34,36 of this common electrode 35 and pixel electrodes are provided with insulation course (not indicating), and this LCD 3 realizes colored the demonstration by colored filter 30.
During making alive, 36 formation of this common electrode 35 and pixel electrode are basically parallel to the electric field 38 of substrate 31 and 32, because of liquid crystal molecule 37 has electrically certain, thereby under electric field 38 effects, the orientation of this liquid crystal molecule 37 is consistent with the direction of this electric field 38, but, there is certain angle in the polarization direction of the direction of electric field 38 and polarizing appliance 34, then the linearly polarized light (figure does not show) by polarizing appliance 34 will produce birefringence when arriving liquid crystal molecule 37, thereby this linear polarization polarization state of light will change, and this polarizing appliance 33 is vertical mutually with the polarization direction of polarizing appliance 34, thereby the part component of this linearly polarized light will be by polarizing appliance 33, and promptly this LCD 3 is in bright attitude.
But it is described that the utility model liquid crystal indicator is not limited to above-mentioned embodiment, as: above-mentioned substrate can adopt glass or silicon dioxide to make; Insulation course between above-mentioned common electrode and pixel electrode can adopt insulating material such as monox or silicon nitride to make; This interval body also can be to go up the hexahedron structure that bottom surface is parallel to each other; The both alignment layers of this liquid crystal indicator can be arranged on contiguous liquid crystal layer one side of two substrates simultaneously; This counter electrode both can link to each other with first substrate, also can and first substrate between have a spacing; This conducting film can adopt other conductive material to make, as IZO (Indium Zinc Oxide, indium zinc oxide), gold, silver, copper etc.
Claims (10)
1. liquid crystal indicator, comprise that first substrate that is oppositely arranged and second substrate, are positioned at liquid crystal layer between this two substrate, a plurality of being arranged in parallel in the common electrode of contiguous liquid crystal layer one side of second substrate and pixel electrode, a plurality of spaced walls that is arranged between two substrates, at least one substrate is to adopt transparent material to make in this two substrate, be provided with insulation course between this common electrode and pixel electrode, it is characterized in that: these a plurality of spaced walls are arranged on above-mentioned common electrode and the pixel electrode, and these a plurality of spaced walls all can be conducted electricity.
2. liquid crystal indicator as claimed in claim 1 is characterized in that this each next door comprises an interval body and a conducting film, and this conducting film is plated in the surface of this interval body.
3. liquid crystal indicator as claimed in claim 2 is characterized in that this interval body is right cylinder, rectangular parallelepiped or goes up the hexahedron that bottom surface is parallel to each other.
4. liquid crystal indicator as claimed in claim 2 is characterized in that this interval body is to adopt glass partition body or silicon dioxide spacer body.
5. liquid crystal indicator as claimed in claim 2 is characterized in that this conducting film comprises an indium-tin oxide film.
6. liquid crystal indicator as claimed in claim 2 is characterized in that this conducting film comprises an indium zinc oxide film.
7. liquid crystal indicator as claimed in claim 2 is characterized in that this conducting film comprises a metal conductive film.
8. liquid crystal indicator as claimed in claim 1 is characterized in that this liquid crystal indicator further comprises a plurality of counter electrodes, and this counter electrode is arranged between the spaced walls and first substrate, and links to each other with this spaced walls.
9. liquid crystal indicator as claimed in claim 8 is characterized in that this counter electrode links to each other with first substrate.
10. liquid crystal indicator as claimed in claim 8 is characterized in that existing between this counter electrode and first substrate spacing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420095308 CN2757173Y (en) | 2004-11-12 | 2004-11-12 | Liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420095308 CN2757173Y (en) | 2004-11-12 | 2004-11-12 | Liquid crystal display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2757173Y true CN2757173Y (en) | 2006-02-08 |
Family
ID=35965560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420095308 Expired - Lifetime CN2757173Y (en) | 2004-11-12 | 2004-11-12 | Liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2757173Y (en) |
-
2004
- 2004-11-12 CN CN 200420095308 patent/CN2757173Y/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20141112 Granted publication date: 20060208 |