CN106896585A - TN type liquid crystal displays - Google Patents
TN type liquid crystal displays Download PDFInfo
- Publication number
- CN106896585A CN106896585A CN201610592676.3A CN201610592676A CN106896585A CN 106896585 A CN106896585 A CN 106896585A CN 201610592676 A CN201610592676 A CN 201610592676A CN 106896585 A CN106896585 A CN 106896585A
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- China
- Prior art keywords
- liquid crystal
- phase separation
- layer
- separation layer
- crystal display
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Classifications
-
- 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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/13363—Birefringent elements, e.g. for optical compensation
- G02F1/133634—Birefringent elements, e.g. for optical compensation the refractive index Nz perpendicular to the element surface being different from in-plane refractive indices Nx and Ny, e.g. biaxial or with normal optical axis
-
- 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
- G02F2413/00—Indexing scheme related to G02F1/13363, i.e. to birefringent elements, e.g. for optical compensation, characterised by the number, position, orientation or value of the compensation plates
- G02F2413/02—Number of plates being 2
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
- Polarising Elements (AREA)
Abstract
A kind of TN types liquid crystal display.TN types liquid crystal display includes TN types liquid crystal layer and Polarizer.Polarizer includes protective layer, double optical axis phase separation layers and polarizing layer.Double optical axis phase separation layers are adjacent to the side of TN type liquid crystal layers.Polarizing layer is formed between protective layer and double optical axis phase separation layers.
Description
Technical field
It is the present invention relates to a kind of TN (Twist-Nematics) type liquid crystal and more particularly to a kind of with double optical axis phase differences
The TN type liquid crystal displays of layer.
Background technology
TN types liquid crystal display panel uses TN liquid crystal molecules.The characteristic of TN liquid crystal molecules is big windup-degree, therefore easily
Cause leakage problem.If the visual angle for watching TN type liquid crystal display panels is bigger, colour cast problem can be serious and be expected to wish that display is black
The region of color may show grey or even white.
Therefore, need badly and propose that a kind of new technology goes to improve TN liquid crystal molecules problem first in the sky.
The content of the invention
Therefore, it is an object of the invention to propose a kind of TN types liquid crystal display, above-mentioned problem of the prior art can be improved.
An embodiment of the invention, proposes a kind of TN types liquid crystal display.TN types liquid crystal display includes a TN types
Liquid crystal layer and one first Polarizer.First Polarizer includes one first protective layer, a biaxial phase separation layer and one first
Polarizing layer.Biaxial phase separation layer is adjacent to one first side of TN type liquid crystal layers.First polarizing layer is formed at the first protective layer
Between biaxial phase separation layer.Wherein, biaxial phase separation layer has a plane compensation value R0, plane compensation value
R0Between 30 nanometers and 80 nanometers.R0Definition be expressed as：R0=(nx-ny)×d1。nxAnd nyRepresent biaxial phase
The refractive index of two axial directions in one plane of potential difference layer, and d1 represents the thickness of biaxial phase separation layer.
Below in conjunction with the drawings and specific embodiments, the present invention will be described in detail, but not as a limitation of the invention.
Brief description of the drawings
Fig. 1 illustrates the exploded view according to the TN type liquid crystal displays of one embodiment of the invention；
Fig. 2 illustrates the visual angle performance figure of the TN type liquid crystal displays of Fig. 1.
Wherein, reference
100：TN type liquid crystal displays
110：TN type liquid crystal display panels
111：First substrate
112：TN type liquid crystal layers
112s1：First side
112s2：Second side
113：Second substrate
120：First Polarizer
121：First protective layer
122：Biaxial phase separation layer
123：First polarizing layer
130：Second Polarizer
131：Second protective layer
132：Second pair of optical axis phase separation layer
133：Second polarizing layer
140：Backlight module
A、B：Point
C1、C2：Curve
d1：Thickness
L：Light
nx、ny、nz：Refractive index
R0：Plane compensation value
Rth：Thickness compensation value
t1：Thickness
x、y、z：Axially
Δn：Refringence
Specific embodiment
Structural principle of the invention and operation principle are described in detail below in conjunction with the accompanying drawings：
Fig. 1 is refer to, it illustrates the exploded view according to the TN types liquid crystal display 100 of one embodiment of the invention.TN type liquid
Crystal display 100 includes TN types liquid crystal display panel 110, the first Polarizer 120, the second Polarizer 130 and backlight module 140.
Backlight module 140 can emit beam L, sequentially by the second Polarizer 130, TN types liquid crystal display panel 110 and the first Polarizer
120 and light extraction.
TN types liquid crystal display panel 110 is located between the first Polarizer 120 and the second Polarizer 130.TN type liquid crystal displays
Panel 110 includes first substrate 111, TN types liquid crystal layer 112 and second substrate 113, and wherein TN types liquid crystal layer 112 is located at the first base
Between plate 111 and second substrate 113.It is brilliant with film that first substrate 111 can be respectively colored filter substrate with second substrate 113
Body pipe substrate.
First Polarizer 120 includes the first protective layer 121, the polarizing layer 123 of biaxial phase separation layer 122 and first,
Wherein the first polarizing layer 123 is located between the first protective layer 121 and biaxial phase separation layer 122, and biaxial phase
First side 112s1 of the potential difference layer 122 adjacent to TN types liquid crystal layer 112.Biaxial phase separation layer 122 can use coating method shape
Into on the first protective layer 121 or the first polarizing layer 123.Or, biaxial phase separation layer 122, the first protective layer 121 with
First polarizing layer 123 after completing respectively, and biaxial phase separation layer 122 is inclined with the first protective layer 121 or the first again
Photosphere 123 fits together.
Due to the design of biaxial phase separation layer 122, can expand TN types liquid crystal display 100 visual angle and/and change
It is apt to existing colour cast problem.Further say, even if TN types liquid crystal layer 112 has the leakage problem of first the sky, in the embodiment of the present invention
Biaxial phase separation layer 122 auxiliary under, can improve because light leak caused by small angle and colour cast problem.
In one embodiment, biaxial phase separation layer 122 has a plane compensation value R0, this plane compensation value R0It is situated between
Between about 30 nanometers and about 80 nanometers.R0Definition can be represented with following formula (1), n thereinxRepresent biaxial phase difference
Layer 122 plane xy on x-axis to refractive index, nyRepresent y-axis on the plane xy of biaxial phase separation layer 122 to refraction
Rate, and d1 represents the thickness of the biaxial phase separation layer.Plane xy herein refers to biaxial phase separation layer 122
Extension plane direction.The x-axis of this paper can be the length direction and the one of width of biaxial phase separation layer 122
Person, and y-axis can be the another one of the length direction with width of biaxial phase separation layer 122.
R0=(nx-ny)×d1.............................(1)
In one embodiment, biaxial phase separation layer 122 has thickness compensation value Rth, its can between 100 nanometers with
Between 300 nanometers.Thickness compensation value RthDefinition can be represented with following formula (2), n thereinzRepresent biaxial phase separation layer
122 refractive index (i.e. z-axis to refractive index) perpendicular to plane xy.
Additionally, TN types liquid crystal layer 112 has the product value S1 of refractive indices n and thickness t1, refractive indices n and thickness t1
Can be between about 330 nanometers and about 430 nanometers.The refractive indices n of TN types liquid crystal layer 112 can be between about 0.07 and about 0.13
Between, and the liquid crystals twist angle of the liquid crystal molecule of TN types liquid crystal layer 112 is between about 87 degree and about 93 degree.
To sum up, as long as meeting the plane compensation value R of (a) biaxial phase separation layer 1220Between about 30 nanometers and about 80
Nanometer between, the thickness compensation value R of (b) biaxial phase separation layer 122thBetween between about 100 nanometers and about 300 nanometers,
C the product value of the refractive indices n and thickness t1 of () TN types liquid crystal layer 112 is between about 330 nanometers and about 430 nanometers, (d) TN
The refractive indices n of type liquid crystal layer 112 can between about 0.07 and about 0.13 with the liquid crystal molecule of (e) TN types liquid crystal layer 112
Liquid crystals twist angle between about 87 degree and about 93 degree at least one of five, TN type liquid crystal layers can be improved because congenital
Small angle and colour cast problem caused by characteristic.
Similarly, the second Polarizer 130 includes 131, second pair of polarisation of optical axis phase separation layer 132 and second of the second protective layer
Layer 133, wherein second pair of optical axis phase separation layer 132 is located between the second protective layer 131 and the second polarizing layer 133, and second pair
Optical axis phase separation layer 132 adjacent to TN types liquid crystal layer 112 the second side 112s2, the second side 112s2 and the first side 112s1 systems TN types
Relative two sides of liquid crystal layer 112.Due to second pair of design of optical axis phase separation layer 132, TN types liquid crystal display 100 can be expanded
Visual angle and/and the existing colour cast problem of improvement.Further say, even if TN types liquid crystal layer 112 has first the sky leakage problem, in this hair
Under second pair of auxiliary of optical axis phase separation layer 132 of bright embodiment, can overcome because small angle and colour cast caused by light leak are asked
Topic.
Similarly, second pair of optical axis phase separation layer 132 has plane compensation value R0.The second pair of optical axis phase separation layer 132
Plane compensation value R0The plane compensation value R of biaxial phase separation layer 122 can be approximately or equal to0.Additionally, second pair of optical axis phase
Potential difference layer 132 has thickness compensation value Rth.Second couple of thickness compensation value R of optical axis phase separation layer 132thCan be approximately or equal to
The thickness compensation value R of biaxial phase separation layer 122th。
Similarly, as long as meeting the plane compensation value R of (a) second pair of optical axis phase separation layer 1320Between about 30 nanometers and about
Between 80 nanometers, the thickness compensation value R of (b) second pair of optical axis phase separation layer 132thBetween about 100 nanometers with about 300 nanometers it
Between, the product value of the refractive indices n of (c) TN types liquid crystal layer 112 and thickness t1 between about 330 nanometers and about 430 nanometers,
The refractive indices n of (d) TN types liquid crystal layer 112 can between about 0.07 and about 0.13 with the liquid crystal of (e) TN types liquid crystal layer 112
The liquid crystals twist angle of molecule between about 87 degree and about 93 degree at least one of five, TN type liquid crystal layers elder generation can be improved
Small angle and colour cast problem caused by its characteristic.
Additionally, in one embodiment, the first polarizing layer 123 and the second polarizing layer 133 respectively have absorption axiss, wherein first is inclined
The absorption axiss of photosphere 123 are generally perpendicular with the absorption axiss of the second polarizing layer 133.
In another embodiment, biaxial phase separation layer 122 has a slow axis, its suction with the first polarizing layer 123
The angle between axle is received between 88 degree to 92 degree, wherein being preferred embodiment with 90 degree.Additionally, the first polarizing layer 123
Angle between the liquid crystal arrangement direction of absorption axiss and TN types liquid crystal layer 112 between about -4 degree between about+4 degree or about 86 degree extremely
Between about 94 degree, wherein being preferred embodiment with 0 degree.Second pair of optical axis phase separation layer 132 has similar to biaxial phase
The angular characteristicses of potential difference layer 122, repeat no more in this.
In another embodiment, second pair of optical axis phase separation layer 132 of the second Polarizer 130 can change and be taken with a polarizer
Generation.The characteristic of this polarizer can be：(1)nx=ny＜ nz、(2)nx=ny＞ nzWith (3) nx=ny≠nzAnd with a pre-dumping
Any one of the three at angle.Specifically, this polarizer can be+C-plate ,-C-plate or O-plate.However,
This polarizer can also be any existing retardation element.
Fig. 2 illustrates the visual angle performance figure of the TN types liquid crystal display 100 of Fig. 1.Curve C1 in figure represents TN type liquid crystals
Show that device 100 is about that 0.1, product value S1 is about 360 nanometers, the liquid crystal of the liquid crystal molecule of TN types liquid crystal layer 112 turns round in refractive indices n
Bent angle is between about 90 degree, plane compensation value R0About 55 nanometers and thickness compensation value RthVisual angle table under about 150 nanometers
Existing curve, and curve C2 represents the visual angle performance curve of the existing TN liquid crystal displays for not having double optical axis phase separation layers.
Curve in diagram represents that contrast (ratio of on state of and dark-state) reaches 100 visual angle performance.Come with point A citings
Say, when viewing angle is 180 degree (display picture of e.g. past-x-axis viewing TN types liquid crystal display 100), visual angle needs to adjust
It is whole to contrast side at about 60 degree be 100；With point B for example, it is 0 degree of (e.g. past+x-axis viewing TN type in viewing angle
The display picture of liquid crystal display 100) when, it is 100 that visual angle need to be adjusted to contrast side at about 60 degree.
As shown in Figure 2, curve C1 watches the display picture of TN types liquid crystal display 100 in 0 degree of orientation and 180 degree orientation
When, visual angle is about 60 degree.Existing TN types liquid crystal display is reviewed, the visual angle in identical viewing orientation only has about 30 degree.It is apparent that
Due to the design of double optical axis phase separation layers of the embodiment of the present invention, make TN types liquid crystal display 100 in the performance of visual angle better than existing
There are TN type liquid crystal displays.Reflect, the TN types liquid crystal display of the embodiment of the present invention can improve TN type liquid crystal layers because of inborn characteristic
Caused small angle and colour cast problem.
Certainly, the present invention can also have other various embodiments, ripe in the case of without departing substantially from spirit of the invention and its essence
Know those skilled in the art and work as and various corresponding changes and deformation, but these corresponding changes and change can be made according to the present invention
Shape should all belong to the protection domain of appended claims of the invention.
Claims (11)
1. a kind of TN types liquid crystal display, it is characterised in that including：
One TN type liquid crystal layers；And
One first Polarizer, including：
One first protective layer；
One biaxial phase separation layer, one first side of the neighbouring TN type liquid crystal layers；And
One first polarizing layer, is formed between first protective layer and the biaxial phase separation layer；
Wherein the biaxial phase separation layer has a plane compensation value R0, plane compensation value R0Received with 80 between 30 nanometers
Between rice；
Wherein, R0Definition be expressed as：R0=(nx-ny)×d1；nxAnd nyRepresent a plane of the biaxial phase separation layer
The refractive index of upper two axial direction, and d1 represents the thickness of the biaxial phase separation layer.
2. TN types liquid crystal display according to claim 1, it is characterised in that the biaxial phase separation layer has
Thickness compensation value Rth, thickness compensation value RthBetween 100 nanometers and 300 nanometers；
Wherein, the definition of Rth is expressed as
Wherein, nxAnd nyRepresent the refractive index of two axial directions in a plane of the biaxial phase separation layer, nzRepresent this first pair
The axial refractive index perpendicular to the plane of optical axis phase separation layer, and d1 represents the thickness of the biaxial phase separation layer.
3. TN types liquid crystal display according to claim 1, it is characterised in that the TN types liquid crystal layer has a refringence
And a thickness, the product value of the refringence and the thickness is between 330 nanometers and 430 nanometers.
4. TN types liquid crystal display according to claim 3, it is characterised in that the refringence of the TN type liquid crystal layers is situated between
Between 0.07 and 0.13.
5. TN types liquid crystal display according to claim 3, it is characterised in that the liquid of the liquid crystal molecule of the TN type liquid crystal layers
Brilliant distortion angle is between 87 degree and 93 degree.
6. TN types liquid crystal display according to claim 1, it is characterised in that further include：
One second Polarizer, including：
One second protective layer；
One second pair of optical axis phase separation layer, one second side of the neighbouring TN type liquid crystal layers, second side is relative with first side；
One second polarizing layer, is formed between second protective layer and second pair of optical axis phase separation layer.
7. TN types liquid crystal display according to claim 6, it is characterised in that second pair of optical axis phase separation layer and this
Biaxial phase separation layer respectively has the plane compensation value of same range.
8. TN types liquid crystal display according to claim 6, it is characterised in that second pair of optical axis phase separation layer and this
Biaxial phase separation layer respectively has the thickness compensation value of same range.
9. TN types liquid crystal display according to claim 6, it is characterised in that first polarizing layer and second polarizing layer
Respectively there are an absorption axiss, the absorption axiss of first polarizing layer are vertical with the absorption axiss of second polarizing layer.
10. TN types liquid crystal display according to claim 9, it is characterised in that the absorption axiss of first polarizing layer with
Angle between the liquid crystal arrangement direction of the TN type liquid crystal layers is between -4 degree between+4 degree or between 86 degree to 94 degree.
11. TN types liquid crystal displays according to claim 1, it is characterised in that further include：
One second Polarizer, including：
One second protective layer；
One polarizer, one second side of the neighbouring TN type liquid crystal layers, second side is relative with first side；
One second polarizing layer, is formed between second protective layer and the polarizer；
Wherein, the polarizer is+C-plate ,-C-plate or O-plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610592676.3A CN106896585A (en) | 2016-07-26 | 2016-07-26 | TN type liquid crystal displays |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610592676.3A CN106896585A (en) | 2016-07-26 | 2016-07-26 | TN type liquid crystal displays |
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| CN106896585A true CN106896585A (en) | 2017-06-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610592676.3A Pending CN106896585A (en) | 2016-07-26 | 2016-07-26 | TN type liquid crystal displays |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101435963A (en) * | 2007-11-13 | 2009-05-20 | 奇美电子股份有限公司 | View angle-adjustable LCD device |
| CN101995599A (en) * | 2009-08-10 | 2011-03-30 | 住友化学株式会社 | Composite polarizing plate and TN mode liquid crystal panel |
| CN202600303U (en) * | 2011-09-15 | 2012-12-12 | 信利半导体有限公司 | Novel Mono-TFT |
| CN104040414A (en) * | 2011-11-14 | 2014-09-10 | 第一毛织株式会社 | Liquid crystal display |
| CN104656309A (en) * | 2013-11-19 | 2015-05-27 | 群创光电股份有限公司 | Display panel and display device comprising same |
-
2016
- 2016-07-26 CN CN201610592676.3A patent/CN106896585A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101435963A (en) * | 2007-11-13 | 2009-05-20 | 奇美电子股份有限公司 | View angle-adjustable LCD device |
| CN101995599A (en) * | 2009-08-10 | 2011-03-30 | 住友化学株式会社 | Composite polarizing plate and TN mode liquid crystal panel |
| CN202600303U (en) * | 2011-09-15 | 2012-12-12 | 信利半导体有限公司 | Novel Mono-TFT |
| CN104040414A (en) * | 2011-11-14 | 2014-09-10 | 第一毛织株式会社 | Liquid crystal display |
| CN104656309A (en) * | 2013-11-19 | 2015-05-27 | 群创光电股份有限公司 | Display panel and display device comprising same |
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Application publication date: 20170627 |
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