CN105954945B - Liquid crystal display panel and liquid crystal display device - Google Patents
Liquid crystal display panel and liquid crystal display device Download PDFInfo
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- CN105954945B CN105954945B CN201610488184.XA CN201610488184A CN105954945B CN 105954945 B CN105954945 B CN 105954945B CN 201610488184 A CN201610488184 A CN 201610488184A CN 105954945 B CN105954945 B CN 105954945B
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 134
- 239000000758 substrate Substances 0.000 claims abstract description 49
- 230000005684 electric field Effects 0.000 abstract description 12
- 238000002834 transmittance Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000004556 brain Anatomy 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 210000002858 crystal cell Anatomy 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
- G02F1/134363—Electrodes characterised by their geometrical arrangement for applying an electric field parallel to the substrate, i.e. in-plane switching [IPS]
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
- G02F1/134372—Electrodes characterised by their geometrical arrangement for fringe field switching [FFS] where the common electrode is not patterned
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Geometry (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
Abstract
An embodiment of the present invention provides a liquid crystal display panel and a liquid crystal display device, the liquid crystal display panel including: the first substrate and the second substrate are oppositely arranged; a liquid crystal layer disposed between the first substrate and the second substrate; the liquid crystal display panel comprises a first polaroid and a second polaroid, wherein the first polaroid is arranged on the surface of one side of a first substrate, which is far away from a liquid crystal layer, and the second polaroid is arranged on the surface of one side of a second substrate, which is far away from the liquid crystal layer; the liquid crystal display device includes a first common electrode, a first insulating layer, and a first pixel electrode disposed between a first substrate and a liquid crystal layer, and a second common electrode, a second insulating layer, and a second pixel electrode disposed between a second substrate and the liquid crystal layer. Based on the technical scheme, the liquid crystal display panel and the liquid crystal display device provided by the embodiment of the invention have the advantages that the pixel electrodes and the common electrodes are arranged on the two sides of the liquid crystal layer, so that the horizontal electric field component distribution range in the liquid crystal layer is wider, and the transmissivity of liquid crystal in the liquid crystal layer can be improved.
Description
Technical Field
The present invention relates to the field of display, and more particularly, to a liquid crystal display panel and a liquid crystal display device.
Background
In a Fringe Field Switching (FFS) mode lcd, the liquid crystal can be driven by an electric Field generated between the common electrode and the pixel electrode, wherein a horizontal electric Field component contributes to the transmittance, and since the horizontal electric Field component gradually decreases in a direction perpendicular to the liquid crystal layer as shown in fig. 1, the liquid crystal molecules are less controlled, and particularly, the liquid crystal molecules tend to be more vertically moved by the vertical electric Field component after being away from the electrode, which may adversely affect the transmittance, resulting in a lower transmittance of a portion of the liquid crystal.
Therefore, how to make the liquid crystal in the liquid crystal display have higher transmittance has become a technical problem to be solved.
Disclosure of Invention
In view of the above, the present invention provides a liquid crystal display panel and a liquid crystal display device capable of improving the transmittance of liquid crystal.
In one aspect, there is provided a liquid crystal display panel including:
the first substrate and the second substrate are oppositely arranged;
a liquid crystal layer disposed between the first substrate and the second substrate;
the liquid crystal display panel comprises a first polaroid and a second polaroid, wherein the first polaroid is arranged on the surface of one side of a first substrate, which is far away from a liquid crystal layer, and the second polaroid is arranged on the surface of one side of a second substrate, which is far away from the liquid crystal layer;
a first common electrode, a first insulating layer, and a first pixel electrode disposed between the first substrate and the liquid crystal layer, and a second common electrode, a second insulating layer, and a second pixel electrode disposed between the second substrate and the liquid crystal layer,
wherein the first common electrode and the second common electrode are respectively provided on surfaces of the first substrate and the second substrate on a side facing the liquid crystal layer, the first insulating layer and the second insulating layer are respectively provided on surfaces of the first common electrode and the second common electrode on a side facing the liquid crystal layer, the first pixel electrode and the second pixel electrode are respectively provided on surfaces of the first insulating layer and the second insulating layer on a side facing the liquid crystal layer,
the first pixel electrode comprises at least two sub-pixel electrode sets, each sub-pixel electrode set in the at least two sub-pixel electrode sets comprises a plurality of sub-pixel electrodes which are arranged at intervals and are parallel to each other, and the arrangement directions of the sub-pixel electrodes in any two sub-pixel electrode sets which are arranged adjacently in the at least two sub-pixel electrode sets are different.
Optionally, the first subpixel electrode and the second subpixel electrode are any two adjacent subpixel electrode sets in at least two subpixel electrode sets, each subpixel electrode in the first subpixel electrode set forms a first included angle with the designated direction, each subpixel electrode in the second subpixel electrode set forms a second included angle with the designated direction, and the first included angle and the second included angle are equal.
Optionally, the first included angle is greater than or equal to 5 degrees and less than or equal to 15 degrees.
Optionally, the width of the sub-pixel electrode is greater than or equal to 0.5 micrometers and less than or equal to 3.5 micrometers.
Optionally, the number of the sub-pixel electrodes included in the first pixel electrode is equal to the number of the sub-pixel electrodes included in the second pixel electrode.
Optionally, the arrangement structure of the first pixel electrodes is the same as the arrangement structure of the second pixel electrodes.
Optionally, the first pixel electrode and the second pixel electrode are arranged opposite to each other.
Optionally, the liquid crystal display panel further comprises:
a first alignment layer disposed on a surface of the liquid crystal layer facing the first substrate;
and a second alignment layer disposed on a surface of the liquid crystal layer facing the second substrate.
Optionally, the liquid crystal of the liquid crystal layer is a blue phase liquid crystal.
In another aspect, there is provided a liquid crystal display device including:
such as the above liquid crystal display panel and the backlight disposed facing the liquid crystal display panel.
Optionally, the backlight is an RGB field sequential backlight.
Based on the technical scheme, the liquid crystal display panel and the liquid crystal display device provided by the embodiment of the invention have the advantages that the pixel electrodes and the common electrodes are arranged on the two sides of the liquid crystal layer, so that the horizontal electric field component distribution range in the liquid crystal layer is wider, and the transmissivity of liquid crystal in the liquid crystal layer can be improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic view of an electric field distribution of a liquid crystal layer in a conventional liquid crystal display panel.
Fig. 2 is a schematic structural view of a liquid crystal display panel according to an embodiment of the present invention.
Fig. 3 is a schematic view of an electric field distribution of a liquid crystal layer in a liquid crystal display panel according to an embodiment of the present invention.
Fig. 4 is a schematic diagram of an arrangement structure of pixel electrodes in a liquid crystal display panel according to an embodiment of the present invention.
Fig. 5 is a schematic structural view of a liquid crystal display panel according to another embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 2 is a schematic structural diagram of a liquid crystal display panel 200 according to an embodiment of the present invention. As shown in fig. 2, the liquid crystal display panel 200 includes:
a first substrate 201 and a second substrate 202 which are arranged oppositely;
a liquid crystal layer 210 disposed between the first substrate 201 and the second substrate 202;
a first polarizing plate 211 disposed on a surface of the first substrate 201 on a side facing away from the liquid crystal layer 210, and a second polarizing plate 212 disposed on a surface of the second substrate 202 on a side facing away from the liquid crystal layer 210;
a first common electrode 231, a first insulating layer 241, and a first pixel electrode 251 disposed between the first substrate 201 and the liquid crystal layer 210, and a second common electrode 232, a second insulating layer 242, and a second pixel electrode 252 disposed between the second substrate 202 and the liquid crystal layer 210.
Among them, the first and second common electrodes 231 and 232 are respectively disposed on the surfaces of the first and second substrates 201 and 202 on the side facing the liquid crystal layer 210, the first and second insulating layers 241 and 242 are respectively disposed on the surfaces of the first and second common electrodes 231 and 232 on the side facing the liquid crystal layer 210, and the first and second pixel electrodes 251 and 252 are respectively disposed on the surfaces of the first and second insulating layers 241 and 242 on the side facing the liquid crystal layer 210.
The pixel electrode and the common electrode are disposed at both sides of the liquid crystal layer, respectively, and an electric field as shown in fig. 3 may be generated. The electric field formed in this way can more uniformly control the liquid crystal molecules in the liquid crystal layer, so that more liquid crystal molecules in the liquid crystal layer are controlled by the horizontal electric field component, and the transmissivity of the liquid crystal molecules in the liquid crystal layer in an on state can be improved.
Therefore, according to the liquid crystal display panel provided by the embodiment of the invention, the pixel electrodes and the common electrodes are arranged on the two sides of the liquid crystal layer, so that the horizontal electric field component distribution range in the liquid crystal layer is wider, and the transmissivity of liquid crystal in the liquid crystal layer can be improved.
The first pixel electrode 251 and the second pixel electrode 252 may include a plurality of sub-pixel electrodes, respectively.
In some embodiments, the transmission axis of the first polarizer 211 is 0 ° and the transmission axis of the second polarizer is 180 °.
The first substrate 201 and the second substrate 202 may be substrates made of a transparent material, for example, the first substrate 201 and the second substrate 202 may be glass substrates.
Optionally, the first pixel electrode 251 may include at least two sets of sub-pixel electrodes, each set of sub-pixel electrodes in the at least two sets of sub-pixel electrodes includes a plurality of sub-pixel electrodes arranged at intervals and parallel to each other, and the arrangement directions of the sub-pixel electrodes in any two sets of sub-pixel electrodes arranged adjacently in the at least two sets of sub-pixel electrodes are different.
The color shift of the liquid crystal display panel can be advantageously eliminated by arranging the pixel electrodes in this way.
Optionally, the first sub-pixel electrode set and the second sub-pixel electrode set are two sub-pixel electrode sets that are arbitrarily adjacent to each other in at least two sub-pixel electrode sets, each sub-pixel electrode in the first sub-pixel electrode set forms a first included angle with the designated direction, each sub-pixel electrode in the second sub-pixel electrode set forms a second included angle with the designated direction, and the first included angle and the second included angle are equal.
Fig. 4 is a schematic diagram illustrating an arrangement structure of the first pixel electrode 251. As shown in fig. 4, the two adjacent sub-pixel electron sets in the first pixel electrode 251 form the same angle with the designated direction.
As shown in fig. 4, the specified direction may be a horizontal direction. It should be understood that the designated direction may be other directions, and the embodiment of the present invention is not limited thereto.
Optionally, the first included angle is greater than or equal to 5 degrees and less than or equal to 15 degrees. The first included angle may be any angle of 5 degrees to 15 degrees, for example, the first included angle may be 5 degrees, 7 degrees, 11 degrees, 15 degrees, and the like.
Optionally, the width of the sub-pixel electrode is greater than or equal to 0.5 micrometers and less than or equal to 3.5 micrometers. The width of the sub-pixel electrode may be any of 0.5 to 3.5 micrometers, for example, the width of the sub-pixel electrode may be 0.5 micrometers, 0.8 micrometers, 1.2 micrometers, 1.3 micrometers, 1.7 micrometers, 1.8 micrometers, 2.1 micrometers, 3.1 micrometers, and the like.
It should be understood that different first angles or different widths of the sub-pixel electrodes may be selected according to the design parameters of the product.
Alternatively, the first pixel electrode 251 includes the same number of sub-pixel electrodes as the second pixel electrode 252.
Alternatively, the arrangement structure of the first pixel electrode 251 is the same as that of the second pixel electrode 252. That is, the second pixel electrode 252 may also include at least two sets of subpixel electrodes, each of the at least two sets of subpixel electrodes includes a plurality of subpixel electrodes that are arranged at intervals and are parallel to each other, and the arrangement directions of the subpixel electrodes in any two sets of subpixel electrodes that are arranged adjacently in the at least two sets of subpixel electrodes are different. This is advantageous in further eliminating color shift of the liquid crystal display panel.
Optionally, the first pixel electrode 251 and the second pixel electrode 252 are disposed opposite to each other. Thus being beneficial to realizing the production process and simplifying the production process.
Alternatively, as shown in fig. 5, the liquid crystal display panel 200 may further include:
a first alignment layer 261 disposed on a surface of the liquid crystal layer 210 on the side facing the first substrate 201;
and a second alignment layer 262 disposed on a surface of the liquid crystal layer 210 facing the second substrate 202.
The alignment layer may also be referred to as an alignment film, and can provide a pretilt angle for the liquid crystal in the liquid crystal layer, so that the arrangement of the liquid crystal exhibits a certain rule.
Alternatively, the liquid crystal of the liquid crystal layer 210 is a blue phase liquid crystal. The blue phase liquid crystal has the response time of sub-millisecond level, so that the field sequential color display can be realized by matching with an RGB field sequential backlight source. Furthermore, the transmittance of the liquid crystal cell is less affected by the cell thickness.
When the liquid crystal of the liquid crystal layer 210 is a blue phase liquid crystal, the liquid crystal display panel 200 may not be provided with an alignment layer. Thus, the manufacturing process of the liquid crystal display panel can be simplified, and the excellent rate of the liquid crystal display panel can be improved.
Another embodiment of the present invention also provides a liquid crystal display device, including: a liquid crystal display panel 200 shown in fig. 2, 3 or 5 and a backlight disposed facing the liquid crystal display panel.
Optionally, the backlight is an RGB field sequential backlight. Thus, color display can be realized without providing a color filter on the liquid crystal display panel, and the structure of the liquid crystal display device can be simplified.
When the RGB field sequential backlight is used, the RGB field sequential backlight can sequentially emit light of three colors of red, green, and blue, and the period of the sequential repetition of the three colors is less than the visual retention time of the human eye, so that a colored image can be formed in the human brain.
While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and various equivalent modifications and substitutions can be easily made by those skilled in the art within the technical scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A liquid crystal display panel comprising:
the first substrate and the second substrate are oppositely arranged;
a liquid crystal layer disposed between the first substrate and the second substrate;
the first polaroid is arranged on the surface of the first substrate on the side far away from the liquid crystal layer, and the second polaroid is arranged on the surface of the second substrate on the side far away from the liquid crystal layer;
a first common electrode, a first insulating layer, and a first pixel electrode disposed between the first substrate and the liquid crystal layer, and a second common electrode, a second insulating layer, and a second pixel electrode disposed between the second substrate and the liquid crystal layer,
wherein the first common electrode and the second common electrode are respectively provided on surfaces of the first substrate and the second substrate on a side facing the liquid crystal layer, the first insulating layer and the second insulating layer are respectively provided on surfaces of the first common electrode and the second common electrode on a side facing the liquid crystal layer, the first pixel electrode and the second pixel electrode are respectively provided on surfaces of the first insulating layer and the second insulating layer on a side facing the liquid crystal layer,
the first pixel electrode comprises at least two sub-pixel electrode sets, each sub-pixel electrode set in the at least two sub-pixel electrode sets comprises a plurality of sub-pixel electrodes which are arranged at intervals and are parallel to each other, the arrangement directions of the sub-pixel electrodes in any two sub-pixel electrode sets which are adjacently arranged in the at least two sub-pixel electrode sets are different, and the first pixel electrode and the second pixel electrode are arranged in a right-to-side mode;
the first pixel electrode and the second pixel electrode are arranged in the same structure and extend in the same direction.
2. The lcd panel of claim 1, wherein the first and second sets of subpixel electrodes are any two adjacent sets of subpixel electrodes of the at least two sets of subpixel electrodes, each subpixel electrode of the first set of subpixel electrodes forming a first angle with the designated direction and each subpixel electrode of the second set of subpixel electrodes forming a second angle with the designated direction, the first and second angles being equal.
3. The liquid crystal display panel of claim 2, wherein the first included angle is 5 degrees or more and 15 degrees or less.
4. The liquid crystal display panel according to any one of claims 1 to 3, wherein the width of the sub-pixel electrode is 0.5 micrometers or more and 3.5 micrometers or less.
5. The liquid crystal display panel of any one of claims 1 to 3, wherein the first pixel electrode includes the same number of sub-pixel electrodes as the second pixel electrode.
6. The liquid crystal display panel of any one of claims 1 to 3, wherein an arrangement structure of the first pixel electrodes is the same as an arrangement structure of the second pixel electrodes.
7. A liquid crystal display panel according to any one of claims 1 to 3, further comprising:
a first alignment layer disposed on a surface of the liquid crystal layer facing the first substrate;
and a second alignment layer disposed on a surface of the liquid crystal layer facing the second substrate.
8. The liquid crystal display panel according to any one of claims 1 to 3, wherein the liquid crystal of the liquid crystal layer is a blue phase liquid crystal.
9. A liquid crystal display device comprising:
a liquid crystal display panel according to any one of claims 1 to 8 and a backlight disposed facing the liquid crystal display panel.
10. The liquid crystal display device of claim 9, wherein the backlight is an RGB field sequential backlight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610488184.XA CN105954945B (en) | 2016-06-28 | 2016-06-28 | Liquid crystal display panel and liquid crystal display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610488184.XA CN105954945B (en) | 2016-06-28 | 2016-06-28 | Liquid crystal display panel and liquid crystal display device |
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| CN105954945B true CN105954945B (en) | 2021-11-16 |
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| CN107272278A (en) * | 2017-06-26 | 2017-10-20 | 南京中电熊猫平板显示科技有限公司 | Liquid crystal display device |
| CN109656064A (en) * | 2018-12-29 | 2019-04-19 | 武汉华星光电技术有限公司 | Liquid crystal display panel and display device |
| CN113721392B (en) * | 2020-05-25 | 2022-11-04 | 华为技术有限公司 | A liquid crystal device on silicon |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3427981B2 (en) * | 2000-07-05 | 2003-07-22 | 日本電気株式会社 | Liquid crystal display device and manufacturing method thereof |
| JP2006301466A (en) * | 2005-04-25 | 2006-11-02 | Hitachi Displays Ltd | Liquid crystal display |
| JP5315136B2 (en) * | 2009-06-05 | 2013-10-16 | 株式会社ジャパンディスプレイ | Liquid crystal display |
| CN101943829B (en) * | 2010-08-11 | 2012-05-16 | 昆山龙腾光电有限公司 | In-plane switching liquid crystal display panel and liquid crystal display |
| CN104020615A (en) * | 2014-05-30 | 2014-09-03 | 京东方科技集团股份有限公司 | Liquid crystal display panel and display device |
| CN104965360A (en) * | 2015-07-31 | 2015-10-07 | 深圳市华星光电技术有限公司 | Liquid crystal display panel and display |
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