CN100444003C - Liquid-crystal panel - Google Patents
Liquid-crystal panel Download PDFInfo
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- CN100444003C CN100444003C CNB2005100374674A CN200510037467A CN100444003C CN 100444003 C CN100444003 C CN 100444003C CN B2005100374674 A CNB2005100374674 A CN B2005100374674A CN 200510037467 A CN200510037467 A CN 200510037467A CN 100444003 C CN100444003 C CN 100444003C
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- liquid crystal
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- crystal panel
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Abstract
The invention relates to a liquid crystal panel which includes the opposite two base plates and the liquid crystal layer between the two base plates. One base plate includes a glass base layer, an electrode layer, an insulating layer and a matching direction layer which are all overlapped. The matching direction layer is closed to the liquid crystal layer. The liquid crystal layer can decrease the creepage of the electrode.
Description
[technical field]
The present invention relates to a kind of liquid crystal panel.
[background technology]
At present, LCD has replaced conventional cathode ray tube (the Cathode Ray Tube that is used for counter gradually, CRT) display, and, because characteristics such as the liquid crystal display utensil is light, thin, little, make its be fit to very much be applied to desktop PC, laptop computer, personal digital assistant (Personal Digital Assistant, PDA), portable phone, TV and multiple office automation and audio-visual equipment.Liquid crystal panel is the critical piece of LCD.
In Thin Film Transistor-LCD, the penetrability of viewing area depends on the degree of liquid crystal deflecting element, and the degree of deflection of liquid crystal molecule depends on the voltage between the upper/lower electrode of liquid crystal panel.During display image, thin film transistor (TFT) cuts out then to the liquid crystal capacitance charging of the upper/lower electrode formation of liquid crystal panel.The voltage of this liquid crystal capacitance will keep a period of time, and before next voltage write, the change of this voltage can not make the brightness of display image surpass a GTG, otherwise can cause display effect not good.
Seeing also Fig. 1, is a kind of structural representation of liquid crystal panel of prior art exposure.This liquid crystal panel 100 comprises that first substrate 110, second substrate 120 and are sandwiched in the liquid crystal layer (not indicating) between this first substrate 110 and second substrate.This first substrate 110 comprises polaroid 111, first substrate of glass 112, pixel electrode 113 and first both alignment layers 114 down.This time polaroid 111, first substrate of glass 112, pixel electrode 113 and first both alignment layers 114 are cascading from bottom to top.This second substrate comprises second both alignment layers 124, public electrode 123, colored filter 125, second substrate of glass 122 and last polaroid 121.This second both alignment layers 124, public electrode 123, colored filter 125, second substrate of glass 122 and last polaroid 121 are cascading from bottom to top.This pixel electrode 113 constitutes an electric field with this public electrode 123, controls the deflection of liquid crystal molecule, to show different GTGs.
But, can be between electrode and the liquid crystal layer by both alignment layers electric leakage, this leakage current can not be excessive, excessively then can make this electric field change too big and influence display effect.
And, in processing procedure, after plating first both alignment layers 114 and second both alignment layers 124 respectively on the public electrode 123 of the pixel electrode 113 of this first substrate 110 and this second substrate 120, to implement friction (Rubbing) action to this first both alignment layers 114 and this second both alignment layers 124, so that the liquid crystal regular distribution of injecting is between this first substrate 110 and this second substrate 120.This abrasive action might be implemented inhomogeneous, and may damage both alignment layers, and it is thin or damaged to make local both alignment layers cross, thereby causes the leakage current between this electrode layer and the liquid crystal layer excessive, causes display effect to reduce.
[summary of the invention]
For solving pixel electrodes and the excessive problem of public electrode leakage current, be necessary to provide a kind of LCD that reduces pixel electrode and public electrode electric leakage.
A kind of liquid crystal panel comprises that two substrates and that are oppositely arranged are sandwiched in the liquid crystal layer between this two substrate, wherein a substrate comprises a substrate of glass, an electrode layer, an insulation course and a both alignment layers that is cascading, this both alignment layers is adjacent to this liquid crystal layer, this insulation course is adjacent with this both alignment layers, and the thickness of this insulation course is between 10nm to 500nm.
Owing to be provided with an insulation course between the electrode layer of above-mentioned liquid crystal panel and the both alignment layers, increased the resistance between this electrode layer and this liquid crystal layer, so can reduce the leakage current between electrode layer and the liquid crystal layer, and can prevent because of the excessive problem of leakage current between impaired or uneven electrode layer that causes of both alignment layers and the liquid crystal layer.
[description of drawings]
Fig. 1 is the structural representation of the liquid crystal panel of prior art.
Fig. 2 is the structural representation of the liquid crystal panel of first embodiment of the invention.
Fig. 3 is the structural representation of the liquid crystal panel of second embodiment of the invention.
Fig. 4 is the structural representation of the liquid crystal panel of third embodiment of the invention.
[embodiment]
Seeing also Fig. 2, is the structural representation of the liquid crystal panel 200 that discloses of first embodiment of the invention.This liquid crystal panel 200 comprises that first substrate 210, second substrate 220 and are sandwiched in the liquid crystal layer (not indicating) between this first substrate 210 and this second substrate 220.
This first substrate 210 comprises polaroid 211, first substrate of glass 212, pixel electrode 213, an insulation course 214 and one first both alignment layers 215 down.This time polarisation 211, this first substrate of glass 212, this pixel electrode 213, this insulation course 214 and this first both alignment layers 215 are cascading from bottom to top.This insulation course 214 makes the resistance between this pixel electrode 213 and this liquid crystal layer increase, so can reduce the leakage current between this pixel electrode 213 and this liquid crystal layer.If both alignment layers 215 is impaired or inhomogeneous in processing procedure, because of the existence of this insulation course 214, can effectively isolate this pixel electrode 213 and this liquid crystal layer, so can reduce the leakage current between this pixel electrode 213 and this liquid crystal layer, the material that insulation course 214 adopts is a monox.
This second substrate comprises second both alignment layers 224, public electrode 223, colored filter 225, second substrate of glass 222 and last polaroid 221.This second both alignment layers 224, public electrode 223, colored filter 225, second substrate of glass 222 and last polaroid 221 are cascading from bottom to top.This public electrode 223 forms an electric field with this pixel electrode 213, with the deflection of control liquid crystal molecule, to show different GTGs.This second both alignment layers 224 is carried out orientation with acting as of this first both alignment layers 215 to liquid crystal molecule, makes liquid crystal molecule by necessarily regularly arranged.
The material that this pixel electrode 213 and this public electrode 223 are adopted be indium tin oxide (Indium Tin Oxide, ITO).
Owing to be provided with an insulation course 214 between the pixel electrode 213 of this liquid crystal panel 200 and the both alignment layers 215, increased liquid crystal layer and pixel electrode between resistance, so can effectively reduce the electric leakage of pixel electrode 213.
The manufacturing step of this liquid crystal panel 200 is as follows: one first substrate 210 is provided; One second substrate 220 is provided; Between two substrates 210 and 220, inject liquid crystal.
These first substrate, 210 manufacture methods comprise the steps: to form pixel electrode 213 on this first substrate of glass 212; The employing chemical vapor deposition (Chemical VaporDeposition, CVD) method deposits a layer insulating 214 on this pixel electrode 213, and this insulation course 214 is a monox; On this insulation course 214, form first both alignment layers 215; This both alignment layers 215 rubs; Polaroid 211 under attaching on this first substrate of glass 212.
The chemical vapour deposition technique that forms these insulation course 214 employings can be plasma-assisted chemical vapour deposition (Plasma Enhance Chemical Vapor Deposition, PECVD), high density plasma chemical vapor deposition (High Density PlasmaChemical Vapor Deposition, HDPCVD), electron cyclotron resonance chemical vapor deposition (Electron Cyclotron Resonance Chemical Vapor Deposition, ECRCVD) and induction type coupling plasma assistant chemical vapor deposition (InductivelyCoupled Plasma Chemical Vapor Deposition, ICPCVD) a kind of, deposit thickness is between 10nm to 500nm.
The formation method of this insulation course 214 is not limited to above-mentioned chemical vapor deposition, also can be sputter (Sputtering) deposition or spin-coating method (Spin-on) etc.The material of this insulation course 214 is not limited to monox, also can be silicon nitride, silicon-oxy-nitride, hydrogeneous silicon nitride, contain silicon oxide carbide, contain carbonitride of silicium, fluorinated silicon oxide, fluorine-containing silicon nitride, the tantalum metal oxide, the tantalum metal nitride, the tantalum metal oxynitride, the zirconium metal oxide, the zirconium metal nitride, the zirconium metal oxynitride, the hafnium metal oxide, the hafnium metal nitride, the hafnium metal oxynitride, the titanium oxide, the titanium nitride, the titanium oxides of nitrogen, the nickel metal oxide, the nickel metal nitride, the nickel metal oxynitride, the cobalt metal oxide, the cobalt metal nitride, the cobalt metal oxynitride, the aluminum metal oxide, aluminum metal nitride or aluminum metal oxides of nitrogen, this insulation course also can be ammonia oxynitride (Hydrogen Silsesquioxane, HSQ) film, silica hydrocarbon (Methylsilsesquioxane, MSQ) film, porous is gathered silazane (Porous-polysilazane, PPSZ) film, rare (the Benzocyclobutene of phenylpropyl alcohol ring fourth, BCB) film, fluoridize inferior aromatic ether (Fluorinated Arylene Ether, FLARE) film, aromatic hydrocarbons (Silk) film, black diamond (Black Diomand) film, organosilane macromolecule (Hybrid Organic Siloxane Polymer, HOSP) film, poly-inferior aromatic ether (Polyarylene Ether, PAE) film, diamond like carbon (Diamond-like Carbon, DLC) film etc.
Seeing also Fig. 3, is the structural representation of the liquid crystal panel 300 of second embodiment of the invention.This liquid crystal panel 300 comprise first substrate 310, second substrate 320 and be sandwiched in this first substrate 310 and this second substrate 320 between liquid crystal layer (indicate).
This first substrate 310 comprises polaroid 311, first substrate of glass 312, pixel electrode 313 and one first both alignment layers 315 down.This time polarisation 311, this first substrate of glass 312, this pixel electrode 313 and this first both alignment layers 315 are cascading from bottom to top.This second substrate 320 comprises second both alignment layers 324, an insulation course 326, public electrode 323, colored filter 325, second substrate of glass 322 and last polaroid 321.This second both alignment layers 324, insulation course 326, public electrode 323, colored filter 325, second substrate of glass 322 and last polaroid 321 are cascading from bottom to top.
The material that this pixel electrode 313 and this public electrode 323 are adopted be indium-zinc oxide (Indium Zinc Oxide, IZO).
Owing to be provided with an insulation course 326 between the public electrode 323 of this liquid crystal panel 300 and second both alignment layers 324, make that the resistance between this public electrode 323 and this liquid crystal layer increases, so can reduce the electric leakage of public electrode 323.
The manufacturing step of this liquid crystal panel 300 is as follows: one first substrate 310 is provided; One second substrate 320 is provided; Between two substrates 310 and 320, inject liquid crystal.
These second substrate, 320 manufacture methods comprise the steps: to form colored filter 325 on this second substrate of glass 322; On this colored filter 325, form public electrode 323; Adopt chemical vapour deposition technique to deposit a layer insulating 326 on this public electrode 323, this insulation course 326 is a monox; On this insulation course 326, form second both alignment layers 324; This both alignment layers 324 rubs; On this second substrate of glass 322, attach polaroid 321.
The formation method of this insulation course 324 is identical with first embodiment of the invention with the employing material.
Seeing also Fig. 4, is the structural representation of the liquid crystal panel 400 of third embodiment of the invention.This liquid crystal panel 400 comprise first substrate 410, second substrate 420 and be sandwiched in this first substrate 410 and this second substrate 420 between liquid crystal layer (indicate).
This first substrate 410 comprises polaroid 411, substrate of glass 412, pixel electrode 413, one first insulation course 414 and one first both alignment layers 415 down.This time polarisation 411, this substrate of glass 412, this pixel electrode 413, this first insulation course 414 and this first both alignment layers 415 are cascading from bottom to top.This second substrate 420 comprises second both alignment layers 424, one second insulation course 426, public electrode 423, colored filter 425, second substrate of glass 422 and last polaroid 421.This second both alignment layers 424, second insulation course 426, public electrode 423, colored filter 425, second substrate of glass 422 and last polaroid 421 are cascading from bottom to top.
The material that this pixel electrode 413 and this public electrode 423 are adopted is an indium tin oxide.
Owing to be provided with first insulation course 414 between the pixel electrode 413 of first substrate 410 of this liquid crystal panel 400 and first both alignment layers 414, be provided with second insulation course 426 between the public electrode 423 of second substrate 420 and second both alignment layers 424, so can reduce this pixel electrode 413 and this public electrode 423 respectively and the leakage current between both alignment layers 414 and 424.
The manufacturing step of this liquid crystal panel 400 is as follows: one first substrate 410 is provided; One second substrate 420 is provided; Between two substrates 410 and 420, inject liquid crystal.The manufacture method of this first substrate 410 is identical with the manufacture method of first substrate 210 of first embodiment of the invention, the manufacture method of this second substrate 420 is identical with the manufacture method of second substrate 320 of second embodiment of the invention, and the formation method of this first insulation course 414 and this second insulation course 426 is identical with first embodiment of the invention with the employing material.
Claims (7)
1. liquid crystal panel, it comprises that two substrates and that are oppositely arranged are sandwiched in the liquid crystal layer between this two substrate, wherein a substrate comprises a substrate of glass, an electrode layer and a both alignment layers that is cascading, this both alignment layers is adjacent to this liquid crystal layer, it is characterized in that: comprise that also one is arranged on the insulation course between this electrode layer and this both alignment layers, this insulation course is adjacent with this both alignment layers, and the thickness of this insulation course is between 10nm to 500nm.
2. liquid crystal panel as claimed in claim 1 is characterized in that: this electrode layer is a pixel electrode.
3. liquid crystal panel as claimed in claim 1 is characterized in that: this electrode layer is a public electrode.
4. liquid crystal panel as claimed in claim 3 is characterized in that: another substrate comprises a substrate of glass, a pixel electrode, an insulation course and a both alignment layers that is cascading, and this both alignment layers is adjacent to this liquid crystal layer setting.
5. liquid crystal panel as claimed in claim 1 is characterized in that: this electrode layer is an indium-tin oxide electrode.
6. liquid crystal panel as claimed in claim 1 is characterized in that: this electrode layer is the indium-zinc oxide electrode.
7. liquid crystal panel as claimed in claim 1 is characterized in that: this insulation course can be a kind of of following material: monox, silicon nitride, silicon-oxy-nitride, hydrogeneous silicon nitride, contain silicon oxide carbide, contain carbonitride of silicium, fluorinated silicon oxide, fluorine-containing silicon nitride, the tantalum metal oxide, the tantalum metal nitride, the tantalum metal oxynitride, the zirconium metal oxide, the zirconium metal nitride, the zirconium metal oxynitride, the hafnium metal oxide, the hafnium metal nitride, the hafnium metal oxynitride, the titanium oxide, the titanium nitride, the titanium oxides of nitrogen, the nickel metal oxide, the nickel metal nitride, the nickel metal oxynitride, the cobalt metal oxide, the cobalt metal nitride, the cobalt metal oxynitride, the aluminum metal oxide, the aluminum metal nitride, the aluminum metal oxides of nitrogen, the ammonia oxynitride, the silica hydrocarbon, porous is gathered silazane, phenylpropyl alcohol ring fourth is rare, fluoridize Aromatic polyester ether, aromatic hydrocarbons, black diamond, the organosilane macromolecule, poly-inferior aromatic ether, diamond like carbon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100374674A CN100444003C (en) | 2005-09-21 | 2005-09-21 | Liquid-crystal panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100374674A CN100444003C (en) | 2005-09-21 | 2005-09-21 | Liquid-crystal panel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1936679A CN1936679A (en) | 2007-03-28 |
| CN100444003C true CN100444003C (en) | 2008-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2005100374674A Ceased CN100444003C (en) | 2005-09-21 | 2005-09-21 | Liquid-crystal panel |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20130114998A (en) * | 2012-04-10 | 2013-10-21 | 삼성디스플레이 주식회사 | Liquid crystal display device and method for manufacturing the same |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040119923A1 (en) * | 2002-12-23 | 2004-06-24 | Lee Yun Bok | Multi-domain liquid crystal display device and method for manufacturing the same |
| US20040183979A1 (en) * | 2003-03-19 | 2004-09-23 | Cheuh-Ju Chen | In-plane switching liquid crystal display and method for manufacturing the same |
| CN1567070A (en) * | 2003-06-23 | 2005-01-19 | 鸿富锦精密工业（深圳）有限公司 | Active matrix type LCD |
| CN1737670A (en) * | 2004-08-20 | 2006-02-22 | 三星电子株式会社 | LCD panel and liquid crystal display |
-
2005
- 2005-09-21 CN CNB2005100374674A patent/CN100444003C/en not_active Ceased
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040119923A1 (en) * | 2002-12-23 | 2004-06-24 | Lee Yun Bok | Multi-domain liquid crystal display device and method for manufacturing the same |
| US20040183979A1 (en) * | 2003-03-19 | 2004-09-23 | Cheuh-Ju Chen | In-plane switching liquid crystal display and method for manufacturing the same |
| CN1567070A (en) * | 2003-06-23 | 2005-01-19 | 鸿富锦精密工业（深圳）有限公司 | Active matrix type LCD |
| CN1737670A (en) * | 2004-08-20 | 2006-02-22 | 三星电子株式会社 | LCD panel and liquid crystal display |
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| Publication number | Publication date |
|---|---|
| CN1936679A (en) | 2007-03-28 |
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Decision date of declaring invalidation: 20180926 Decision number of declaring invalidation: 37287 Granted publication date: 20081217 |