CN100337149C - Active matrix type liquid crystal display - Google Patents
Active matrix type liquid crystal display Download PDFInfo
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- CN100337149C CN100337149C CNB031143865A CN03114386A CN100337149C CN 100337149 C CN100337149 C CN 100337149C CN B031143865 A CNB031143865 A CN B031143865A CN 03114386 A CN03114386 A CN 03114386A CN 100337149 C CN100337149 C CN 100337149C
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- liquid crystal
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Abstract
The present invention relates to an active matrix liquid crystal display apparatus which comprises a first substrate, a second substrate, a liquid crystal layer, a plurality of share electrodes, pixel electrodes, first transparent electrodes and second transparent electrodes, wherein the first substrate and the second substrate are oppositely arranged, the liquid crystal layer is positioned between the two substrates, the share electrodes and the pixel electrodes are mutually at intervals arranged at one side of the second substrate near the liquid crystal layer, the first transparent electrodes are connected with the common electrodes, and the second transparent electrodes are connected with the pixel electrodes. The first transparent electrodes and the second transparent electrodes are respectively arranged at the two substrates, are mutually parallel, and are arranged at intervals in two mutually vertical directions.
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 electrically, so 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 such as Fig. 1, Fig. 2 and shown in Figure 3, this LCD 1 comprises two first substrate 11 and second substrates 12 that are provided with relatively, one liquid crystal layer (indicate) between this first substrate 11 and second substrate 12, two polarization directions are mutually vertical and lay respectively at the polarizing appliance 110 and 120 of this first substrate 11 and second substrate 12 and 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, a plurality of transparency electrodes 151 and 161 that are parallel to each other in first substrate 11 and link to each other with pixel electrode 16 with common electrode 15 respectively that are arranged on, a plurality of second substrate 12 and gate lines 14 parallel of being arranged on this common electrode 15, a plurality of second substrate 12 and signal wires 13 vertical of being arranged on this common electrode 12, one is arranged on the colored filter 19 in first substrate 11, 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 120, have at least one to be to adopt transparent material to make in this first substrate 11 and second substrate 12, this liquid crystal layer is to adopt to row (Nematic) type liquid crystal to make, and this LCD 1 realizes colored the demonstration by colored filter 19.
Please consulting Fig. 2 again, 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 17 is identical with the orientation of both alignment layers 100, and the orientation of this both alignment layers 100 is identical with the polarization direction of polarizing appliance 120, so, the linearly polarized light (figure does not show) that enters liquid crystal layer through polarizing appliance 120 just in time can pass through liquid crystal layer, and polarization state does not change.In addition, polarising means 110 is vertical mutually with 120 polarization directions, so this linearly polarized light can not pass through polarizing appliance 110, promptly this LCD 1 is in dark attitude.
Please consult Fig. 3 again, when being making alive, the synoptic diagram of this LCD 1 duty of living in.This transparency electrode 151 forms the electric field 18 that is basically parallel to first substrate 11 and second substrate 12 with transparency electrode 161, 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 120, then the linearly polarized light (figure does not show) by polarizing appliance 120 will produce birefringence when arriving liquid crystal molecule 17, thereby this linear polarization polarization state of light will change, and polarizing appliance 110 is vertical mutually with 120 polarization direction, 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 LCD, and adopt the LCD 1 of this method to have broader angle of visibility than conventional liquid crystal.
But this transparency electrode 151 all is arranged in the substrate 12 with transparency electrode 161, forms broach shape structure as shown in Figure 1, and this transparency electrode 151 is connected to common electrode 15 and pixel electrode 16 respectively with transparency electrode 161, and so configuration will make the processing procedure complexity.In addition, this transparency electrode 151 and transparency electrode 161 only can form the electric field 18 that is parallel to first substrate 11 and second substrate 12 of a certain direction, this electric field 18 can not be distributed in the whole plane that is parallel to first substrate 11 and second substrate 12, then during making alive, will there be part liquid crystal molecule 17 not to be subjected to the effect of electric field 18, promptly exist part to enter the linearly polarized light of liquid crystal layer through polarizing appliance 120 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 110, so LCD 1 is deposited
In the logical lower defective of efficient of light.
In sum, provide a kind of processing procedure LCD simple and that the logical efficient of light is higher real for necessary.
[summary of the invention]
For overcoming the defective that adopts logical efficient difference of prior art LCD light and processing procedure complexity, the invention provides the logical higher and simple active matrix-type liquid crystal display device of processing procedure of efficient of a kind of light.
The technical scheme that technical solution problem of the present invention is adopted is: an active matrix-type liquid crystal display device is provided, it comprises two first substrate and second substrates that are provided with relatively, one is positioned at the liquid crystal layer between this two substrate, a plurality of spaces are arranged on the common electrode and the pixel electrode of contiguous liquid crystal layer one side of second substrate, a plurality of first transparency electrodes that link to each other with this common electrode, a plurality of second transparency electrodes that link to each other with this pixel electrode, wherein, this first transparency electrode and second transparency electrode are separately positioned in this two substrate, on two orthogonal directions, this first transparency electrode is parallel to second transparency electrode, and this first transparency electrode and the second transparency electrode space are provided with, with the orthogonal two kinds of electric fields of generation direction of an electric field, and the component of two kinds of electric fields in the plane parallel with two substrates is vertical mutually.
Compared to prior art, the invention has the beneficial effects as follows: active matrix-type liquid crystal display device of the present invention adopt a plurality of first transparency electrodes that link to each other with this common electrode with pixel electrode on second transparency electrode that links to each other, this first transparency electrode and second transparency electrode are separately positioned in this two substrate, and this first transparency electrode and second transparency electrode include the two parts that are parallel to each other and are provided with at interval on two orthogonal directions, thereby, to form two kinds of electric fields between this first transparency electrode and second transparency electrode, the component of these two kinds of electric fields in the plane parallel with two substrates is vertical mutually, therefore, all there is electric field between two substrates and in the plane parallel with this two substrate, make the liquid crystal molecule quantity that can not be subjected to electric field action reduce, so can increase the logical efficient of light.In addition, this first transparency electrode is separately positioned in the different substrates with second transparency electrode, can avoid the processing procedure difficulty that all transparency electrodes is arranged on same substrate of prior art.
[description of drawings]
Fig. 1 is a kind of distribution of electrodes synoptic diagram of prior art LCD.
Fig. 2 is the not synoptic diagram of duty of living in during making alive of LCD shown in Figure 1.
The synoptic diagram of duty of living in when Fig. 3 is a LCD making alive shown in Figure 1.
Fig. 4 is the distribution of electrodes synoptic diagram of active matrix-type liquid crystal display device first embodiment of the present invention.
Fig. 5 is the not synoptic diagram of duty of living in during making alive of active matrix-type liquid crystal display device shown in Figure 4.
The synoptic diagram of duty of living in when Fig. 6 is an active matrix-type liquid crystal display device making alive shown in Figure 4.
Fig. 7 is the distribution of electrodes synoptic diagram of active matrix-type liquid crystal display device second embodiment of the present invention.
Fig. 8 is the not synoptic diagram of duty of living in during making alive of active matrix-type liquid crystal display device shown in Figure 7.
The synoptic diagram of duty of living in when Fig. 9 is an active matrix-type liquid crystal display device making alive shown in Figure 7.
[embodiment]
First embodiment such as Fig. 4 of active matrix-type liquid crystal display device of the present invention, Fig. 5 and shown in Figure 6, this LCD 2 comprises first substrate 21 and second substrate 22 that is oppositely arranged, one liquid crystal layer (indicate) between this first substrate 21 and second substrate 22, two lay respectively at this first substrate 21 and second substrate 22 and the different side of liquid crystal layer and the orthogonal polarizing appliance 210 of polarization state and 220, a plurality of substrate 22 an adjacent side with liquid crystal layer and common electrode 25 that is parallel to each other and pixel electrodes 26 that are arranged on, a plurality of mutually vertical and be arranged on the transparency electrode 251 and 252 that links to each other with this common electrode 25 in the substrate 21, a plurality of mutually vertical and be arranged on the transparency electrode 261 and 262 that links to each other with this pixel electrode 26 in the substrate 22, a plurality of substrate 22 and gate lines 24 parallel of being arranged on common electrode 25, a plurality of be arranged on substrate 22 and with the perpendicular signal wire 23 of common electrode 25 and gate line 24, one is arranged on substrate 21 adjacent sides with liquid crystal layer and is used to control the both alignment layers 200 of liquid crystal molecular orientation, one is arranged on colored filter 29 and a plurality of spaced walls (indicating) that is arranged between two substrates 21 and 22 of 200 of substrate 21 and both alignment layers.
Wherein, this transparency electrode 251 is parallel to each other with transparency electrode 261 and is provided with at interval, this transparency electrode 252 is parallel to each other with transparency electrode 262 and is provided with at interval, this transparency electrode 251 is parallel to gate line 24 and is provided with, this transparency electrode 252 is parallel to signal wire 23 and is provided with, this transparency electrode 251 forms electric field 281 with transparency electrode 261, this transparency electrode 252 forms electric field 282 with transparency electrode 262, this electric field 281 with 282 with substrate 21 plane parallel with 22 in component vertical mutually, and this electric field 281 with 282 with substrate 21 plane parallel with 22 in component all have certain angle with the polarization direction of polarizing appliance 220, the orientation of this both alignment layers 200 is identical with the polarization direction of polarizing appliance 220, 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 first substrate 21 and second substrate 22, these a plurality of transparency electrodes 251 and 261 all adopt ITO (Indium Tin Oxide, tin indium oxide) transparent conductive material is made, 26 of this common electrode 25 and pixel electrodes are provided with insulation course (not indicating), and this common electrode 25 is to adopt ITO or gold with pixel electrode 26, silver, metallic conduction materials such as copper are made.
Please consulting Fig. 5 again, is not during making alive, the synoptic diagram of active matrix-type liquid crystal display device 2 duties of living in of first embodiment of the invention.Because the orientation of both alignment layers 200 is identical with the polarization direction of polarizing appliance 220, therefore, under this state, the orientation polarization of liquid crystal molecule 27 molecular axiss is identical with the polarization direction of polarizing appliance 220, thereby the linearly polarized light (figure do not show) that enters liquid crystal layer through polarizing appliance 220 just in time can pass through liquid crystal layer, and polarization state do not change, because polarizing appliance 210 is vertical mutually with 220 polarization state, so this linearly polarized light can not pass through polarizing appliance 210, promptly this LCD 2 is in dark attitude.
Please consult Fig. 6 again, when being making alive, the synoptic diagram of active-matrix type LCD 2 duties of living in of first embodiment of the invention.Under this state, because of liquid crystal molecule 27 has electrically certain, so under the effect of electric field 281 and 282, the orientation of this liquid crystal molecule 27 is consistent with the direction of this electric field 281 or 282, but, this electric field 281 with 282 with substrate 21 plane parallel with 22 in component all have certain angle with the polarization direction of polarizing appliance 220, then the linearly polarized light (figure does not show) by polarizing appliance 220 will produce birefringence when arriving liquid crystal molecule 27, thereby this linear polarization polarization state of light will change, and this polarizing appliance 210 is vertical mutually with the polarization direction of polarizing appliance 220, so the part component of this linearly polarized light will be by polarizing appliance 210, promptly this LCD 2 is in bright attitude.Because of this electric field 281 with 282 with substrate 21 plane parallel with 22 in component vertical mutually, then with in substrate 21 plane parallel all there is electric field to exist with 22, thereby, during making alive, the liquid crystal molecule quantity that is not subjected to electric field action is far fewer than prior art LCD 1, so this LCD 2 is than the logical efficient of the better light of prior art LCD 1 tool.In addition, the transparency electrode 251 and 252 that links to each other with common electrode 25 is arranged in the substrate 21, and the transparency electrode 261 and 262 that links to each other with pixel electrode 26 is arranged in the substrate 22, and so setting can be avoided all transparency electrodes are arranged on same suprabasil processing procedure difficulty.
Second embodiment such as Fig. 7 of active matrix-type liquid crystal display device of the present invention, Fig. 8 and shown in Figure 9, this LCD 3 comprises first substrate 31 and second substrate 32 that is oppositely arranged, one liquid crystal layer (indicate) between this first substrate 31 and second substrate 32, two lay respectively at this first substrate 31 and second substrate 32 and the different side of liquid crystal layer and the orthogonal polarizing appliance 310 of polarization state and 320, a plurality of substrate 32 an adjacent side with liquid crystal layer and common electrode 35 that is parallel to each other and pixel electrodes 36 that are arranged on, a plurality of mutually vertical and be arranged on the transparency electrode 351 and 352 that links to each other with this common electrode 35 in the substrate 31, a plurality of mutually vertical and be arranged on the transparency electrode 361 and 362 that links to each other with this pixel electrode 36 in the substrate 32, a plurality of substrate 32 and gate lines 34 parallel of being arranged on common electrode 35, a plurality of be arranged on substrate 32 and with the perpendicular signal wire 33 of common electrode 35 and gate line 34, one is arranged on the colored filter 39 of substrate 31 adjacent sides with liquid crystal layer, one is arranged on the adjacent side with liquid crystal layer of substrate 32 and is used to control both alignment layers 300 and a plurality of spaced walls between two substrates 31 and 32 (indicating) that is arranged on of liquid crystal molecular orientation.
Wherein, this transparency electrode 351 is parallel to each other with transparency electrode 361 and is provided with at interval, this transparency electrode 352 is parallel to each other with transparency electrode 362 and is provided with at interval, all there is an angle in this transparency electrode 351 and 352 with signal wire 33, this transparency electrode 351 forms electric field 381 with transparency electrode 361, this transparency electrode 352 forms electric field 382 with transparency electrode 362, this electric field 381 with 382 with substrate 31 plane parallel with 32 in component vertical mutually, and this electric field 381 with 382 with substrate 31 plane parallel with 32 in component all have certain angle with the polarization direction of polarizing appliance 320, the orientation of this both alignment layers 300 is identical with the polarization direction of polarizing appliance 320, the liquid crystal molecule 37 of this liquid crystal layer is a nematic crystal, have at least one to be to adopt transparent material to make in this first substrate 31 and second substrate 32, these a plurality of transparency electrodes 351 and 361 all adopt ITO (Indium Tin Oxide, tin indium oxide) transparent conductive material is made, 36 of this common electrode 35 and pixel electrodes are provided with insulation course (not indicating), and this common electrode 35 is to adopt ITO or gold with pixel electrode 36, silver, metallic conduction materials such as copper are made.
Duty when in addition, these LCD 3 making alives are with making alive not is identical with LCD 2.
But, it is described that active matrix-type liquid crystal display device of the present invention 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, and above-mentioned spaced walls can be arranged on contiguous liquid crystal layer one side of two substrates etc. simultaneously.
Claims (10)
1. active matrix-type liquid crystal display device, comprise two first substrate and second substrates that are provided with relatively, one is positioned at the liquid crystal layer between this two substrate, a plurality of spaces are arranged on the common electrode and the pixel electrode of contiguous liquid crystal layer one side of second substrate, a plurality of first transparency electrodes that link to each other with this common electrode, a plurality of second transparency electrodes that link to each other with this pixel electrode, it is characterized in that: this first transparency electrode and second transparency electrode are separately positioned on this two substrate, on two orthogonal directions, this first transparency electrode is parallel to second transparency electrode, and this first transparency electrode and the second transparency electrode space are provided with, with the orthogonal two kinds of electric fields of generation direction of an electric field, and the component of two kinds of electric fields in the plane parallel with two substrates is vertical mutually.
2. active matrix-type liquid crystal display device as claimed in claim 1 is characterized in that: this first transparency electrode comprises orthogonal two parts, and some is parallel to the common electrode setting.
3. active matrix-type liquid crystal display device as claimed in claim 1 is characterized in that: this second transparency electrode comprises orthogonal two parts, and some is parallel to the common electrode setting.
4. active matrix-type liquid crystal display device as claimed in claim 1 is characterized in that: all there are an angle in this first transparency electrode and second transparency electrode with common electrode.
5. active matrix-type liquid crystal display device as claimed in claim 1 is characterized in that: having a substrate in this first substrate and second substrate at least is to adopt transparent material to make.
6. active matrix-type liquid crystal display device as claimed in claim 1 is characterized in that: this first transparency electrode and second transparency electrode are to adopt the tin indium oxide material to make.
7. active matrix-type liquid crystal display device as claimed in claim 1 is characterized in that: this active matrix-type liquid crystal display device further comprises a colored filter, and this colored filter is arranged on the side that a substrate closes on liquid crystal layer.
8. active matrix-type liquid crystal display device as claimed in claim 1 is characterized in that: this common electrode and pixel electrode are to adopt the tin indium oxide material to make.
9. active matrix-type liquid crystal display device as claimed in claim 1 is characterized in that: this common electrode and pixel electrode are to adopt the metallic conduction material to make.
10. active matrix-type liquid crystal display device as claimed in claim 1 is characterized in that: this first substrate and second substrate are to adopt glass or silicon dioxide to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031143865A CN100337149C (en) | 2003-04-30 | 2003-04-30 | Active matrix type liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031143865A CN100337149C (en) | 2003-04-30 | 2003-04-30 | Active matrix type liquid crystal display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1542512A CN1542512A (en) | 2004-11-03 |
| CN100337149C true CN100337149C (en) | 2007-09-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031143865A Expired - Fee Related CN100337149C (en) | 2003-04-30 | 2003-04-30 | Active matrix type liquid crystal display |
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| Country | Link |
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| CN (1) | CN100337149C (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08152648A (en) * | 1994-11-28 | 1996-06-11 | Kyocera Corp | Liquid crystal display device |
| JPH08190107A (en) * | 1995-01-09 | 1996-07-23 | Hitachi Ltd | Liquid crystal display device |
| JPH09105958A (en) * | 1995-10-13 | 1997-04-22 | Sharp Corp | Visual angle varying element and visual angle variable liquid crystal display device using the same |
| US6091472A (en) * | 1995-11-24 | 2000-07-18 | Sharp Kabushiki Kaisha | Ferroelectric LCD with particular rubbing directions |
-
2003
- 2003-04-30 CN CNB031143865A patent/CN100337149C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08152648A (en) * | 1994-11-28 | 1996-06-11 | Kyocera Corp | Liquid crystal display device |
| JPH08190107A (en) * | 1995-01-09 | 1996-07-23 | Hitachi Ltd | Liquid crystal display device |
| JPH09105958A (en) * | 1995-10-13 | 1997-04-22 | Sharp Corp | Visual angle varying element and visual angle variable liquid crystal display device using the same |
| US6091472A (en) * | 1995-11-24 | 2000-07-18 | Sharp Kabushiki Kaisha | Ferroelectric LCD with particular rubbing directions |
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| Publication number | Publication date |
|---|---|
| CN1542512A (en) | 2004-11-03 |
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Granted publication date: 20070912 Termination date: 20190430 |
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