CN107142116A - A kind of liquid-crystal composition - Google Patents
A kind of liquid-crystal composition Download PDFInfo
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- CN107142116A CN107142116A CN201710530373.3A CN201710530373A CN107142116A CN 107142116 A CN107142116 A CN 107142116A CN 201710530373 A CN201710530373 A CN 201710530373A CN 107142116 A CN107142116 A CN 107142116A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K19/00—Liquid crystal materials
- C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
- C09K19/42—Mixtures of liquid crystal compounds covered by two or more of the preceding groups C09K19/06 - C09K19/40
- C09K19/44—Mixtures of liquid crystal compounds covered by two or more of the preceding groups C09K19/06 - C09K19/40 containing compounds with benzene rings directly linked
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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
- G02F1/137—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
-
- 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
- G02F1/137—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
- G02F1/13706—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering the liquid crystal having positive dielectric anisotropy
Abstract
The invention discloses a kind of positive liquid crystal composition, it is characterised in that：As component A, the compound represented containing one kind or two or more formula (I 1) to (I 4), as component B, the compound represented containing one kind or two or more formula (II).There is this liquid-crystal composition fast response time, optical anisotropy to have wider adjusting range, and with the good stability to light and heat, the penetrance for lifting IPS, FFS the isotype liquid crystal display device that is particularly suitable for use in.
Description
Technical field
The invention belongs to liquid crystal material technical field, and in particular to a kind of positive liquid crystal composition, and it is in liquid crystal
Show the application in device.
Background technology
Display is the data message using electric signal as communication media to be transformed into the vision letter using visible light as communication media
The process of breath, the equipment for completing display is man-machine interface (Man-Machine Interface, MMI).Flat-panel monitor (Flat
Panel Display, FPD) it is presently the most a popular class display device.Liquid crystal display (Liquid Crystal
Display, LCD) it is to be developed earliest in FPD, and the product being commercialized.At present, Thin Film Transistor-LCD
(Thin Film Transistor Liquid Crystal Display, TFT-LCD) has become the main flow in LCD applications
Product.
Said from operation principle, this display devices of LCD are the light for sending backlight, by polaroid and liquid crystal cell (liquid
Brilliant molecule) etc., the light and shade corresponding to the light for wanting display image is produced, so that color change, is achieved in people cognizable
Image is shown.Wherein the TN-TFT display patterns of transmission-type, the relatively low birefringence of demand (Δ n) liquid crystal compound, to reach
Low optical postpones (d Δs n).To reach preferable contrast view angle dependency (DE-PS 3022818).And reflective display mould
In formula, the effective layer thickness degree that light is passed through is about 2 times in the transmission mode with identical layer thickness, it is therefore desirable to lower
Birefringence.
And currently in order to obtaining the faster response time, the display pannel factory in MNT and TV applications is intended to liquid crystal
The thickness reduction of layer, and the box of reduction panel are thick, to accelerate the response time.In the case where optical path length d Δs n is constant, just
To big birefringence, (Δ n) liquid crystal compound proposes demand (CN1823151B).
At present in liquid crystal display market, competitive display pattern mainly has, in-plane switching (in-plane
Switching, IPS), fringing field switching (fringe-field switching, FFS), and vertical arrangement (vertical
Alignment, VA) etc. display pattern.In these display patterns, in-plane switching (IPS) and fringing field switching (FFS) all have
The characteristics of wide viewing angle.The reason for both display patterns are because of electrode spacing, has higher requirement to the dielectric of liquid crystal compound,
So dielectric (Δ ε) and refractive index can be provided simultaneously, (Δ n) compound, will play a significant role in liquid crystal compound.
The content of the invention
The technical problem to be solved in the invention is to provide a kind of positive liquid crystal composition, results in interior in a big way
Regulatable dielectric and refractive index, to be adapted to thick and quick response the demand of the low box of different display modes.
In order to solve the above technical problems, the technical solution adopted in the present invention is：
In order to solve the above technical problems, the present invention provides a kind of liquid-crystal composition, component A and component B, institute are included
State component A as shown in one or more Formulas I -1 to I-4 compound group into,
The component B as shown in one or more formulas II compound group into,
Wherein,
R1、R2The straight chain alcoxyl that straight chained alkyl, carbon number that carbon number is 1~10 are 1~10 is represented independently of one another
Base or carbon number are any group in 2~10 straight-chain alkenyl.
Compound preferably is selected from having structure described in Formulas I -1 to I-4：
Compound shown in formula II preferably is selected from having structure：
Liquid-crystal composition of the present invention can also include component C, the component C chemical combination as shown in one or more formulas III
Thing is constituted
Wherein,
R3、R4The straight chain alcoxyl that straight chained alkyl, carbon number that carbon number is 1~10 are 1~10 is represented independently of one another
Base or carbon number are any group in 2~10 straight-chain alkenyl.
Compound shown in formula III preferably is selected from having structure：
In liquid-crystal composition of the present invention, component A weight percentage is preferably 1~30%, component B weight hundred
Point content is preferably 1~40%, and component C weight percentage is preferably 20~70%.
Liquid-crystal composition of the present invention can also include component D, changes of the component D represented by one or more general formulae IVs
Compound is constituted
Wherein,
R5、R6Represent unbranched alkoxy or carbon atom that straight chained alkyl, carbon number that carbon number is 1~10 are 1~10
Number is any group in 2~10 straight-chain alkenyl.
Compound represented by general formulae IV preferably is selected from having structure：
Liquid-crystal composition of the present invention can also include component E, the component E chemical combination as shown in one or more formulas V
Thing is constituted
Wherein,
R7Represent unbranched alkoxy or carbon number that straight chained alkyl, carbon number that carbon number is 1~10 are 1~10
For any group in 2~10 straight-chain alkenyl.
Compound represented by formula V preferably is selected from having structure：
Liquid-crystal composition of the present invention can also comprising component F, the component F by one or more formulas VI -1 and/
Or the compound group represented by VI -2 into
Wherein,
R8、R9、R10The straight chain that straight chained alkyl, carbon number that carbon number is 1~10 are 1~10 is represented independently of one another
Alkoxy or carbon number are any group in 2~10 straight-chain alkenyl；
1,4- cyclohexylidenes, 1,4- cyclohexenyl groups, one or two H are represented independently of one another
By the substituted or unsubstituted 1,4- phenylene groups of F；
Represent one or two H by the substituted or unsubstituted 1,4- phenylene groups of F independently of one another；
L1、L2、L3、L9H or F is represented independently of one another；
X1Represent the straight-chain alkenyl that straight chained alkyl, unbranched alkoxy or carbon number that F, carbon number are 1~6 are 2~6
In any group, H therein is unsubstituted or monosubstituted or polysubstituted by F by F；
M, n, p represent 0 or 1 independently of one another；
Also, work as p=0, L1=F and L2=L3During=H, X1It is not F.
Compound represented by formula VI -1 preferably is selected from having structure：
Compound represented by formula VI -2 preferably is selected from having structure：
Liquid-crystal composition of the present invention can also comprising component G, the component G by one or more formulas VII -1 and/
Or compound group shown in VII -2 into
Wherein,
R11、R12Represent to represent the straight chained alkyl, carbon number that carbon number is 1~10 independently of one another independently of one another
Any group in the straight-chain alkenyl that unbranched alkoxy or carbon number for 1~10 are 2~10；
L4、L5、L6、L7、L8H or F is represented independently of one another；
X2, represent F or OCF3；
X3Represent F, OCF3, carbon number be 1-5 straight chained alkyl or carbon number be 1-5 unbranched alkoxy；
Q represents 1 or 2；
R represents 0 or 1.
Compound shown in formula VII -1, preferably is selected from having structure：
Compound shown in formula VII -2, preferably is selected from having structure：
Liquid-crystal composition of the present invention can also comprising component H, the component H by one or more formulas VIII and/
Or compound group shown in Ⅸ into
Wherein,
R13、R14、R15、R16Represent to represent the straight chained alkyl, carbon that carbon number is 1~10 independently of one another independently of one another
Any group in the straight-chain alkenyl that the unbranched alkoxy or carbon number that atomicity is 1~10 are 2~10.
Compound shown in formula VIII preferably is selected from having structure：
Compound shown in formula Ⅸ preferably is selected from having structure：
In liquid-crystal composition of the present invention, according to different application field, preferably, component A weight percent
Content is 1~25%, and component B weight percentage is 1~40%, and component C weight percentage is 35~70%, component
D weight percentage is 1~30%, and component F weight percentage is 1~20%, and component H weight percentage is 1
~40%.Suitable for TV displays.
In liquid-crystal composition of the present invention, according to different application fields, preferably, component A weight hundred
Point content is preferably 1~30%, and component B weight percentage is preferably 1~20%, and component C weight percentage is preferred
For 20~50%, component E weight percentage is preferably 1~20%, and component G weight percentage is preferably 1~40%,
Component H weight percentage is preferably 1~30%.Suitable for smart mobile phone display.
In liquid-crystal composition of the present invention, in order to lift anti-UV and antioxygenic property, additive component S can be also included,
It is used as anti-oxidant, uvioresistant additive.It is preferred that having structure：
Positive dielectric anisotropy liquid crystal composition of the present invention, concentration of the additive component S in liquid-crystal composition
Scope is 1~3000ppm.More preferably：Concentration ranges of the additive component S in liquid-crystal composition be 50~
1000ppm。
The liquid crystal display cells or liquid crystal display of positive dielectric anisotropy liquid crystal composition of the present invention, its feature
It is：The display element or display are active matrix display element or display, passive matrix display element or display.
The liquid-crystal composition of the present invention can be produced using the method for mixing liquid-crystal compounds, such as be mixed at high temperature
Different component and prepared by method soluble in one another, liquid-crystal composition of the invention also can be according to other conventional preparation methods, such as
Take heating, prepared by ultrasonic wave, the mode such as suspend.
Percentage in this specification is mass percent, temperature for degree Celsius (DEG C, the specific meaning of other symbols and survey
Strip part is as follows：
Cp represent clearing point (DEG C, DSC sizing techniques test；
S-N represent the crystalline state of liquid crystal to nematic fusing point (DEG C, the lower low temperature for showing liquid crystal compound of the temperature dissolves each other
Property is better；
Δ n represents optical anisotropy, noFor the refractive index of ordinary light, neFor the refractive index of extraordinary ray, test condition is
25 ± 2 DEG C, 589nm, Abbe refractometer test；
Δ ε represents dielectric anisotropy, Δ ε=ε ∥-ε ⊥, wherein, ε ∥ are the dielectric constant parallel to molecular axis, ε ⊥
For perpendicular to the dielectric constant of molecular axis, test condition is 25 ± 0.5 DEG C, 20 microns of parallel boxes, INSTEC:ALCT-IR1 is surveyed
Examination；
γ 1 represents that (mPas, test condition is 25 ± 0.5 DEG C, 20 microns of parallel boxes, INSTEC to rotary viscosity:ALCT-
IR1 is tested；
ρ represents that (Ω cm, test condition is 25 ± 2 DEG C to resistivity, and tester is TOYO SR6517 high resistants instrument and LE-
21 liquid electrodes.
VHR represents that (%, test condition is 20 ± 2 DEG C to voltage retention, voltage is that ± 5V, pulse width are 10ms, voltage
Retention time 16.7ms.Test equipment is TOYO Model6254 liquid crystal property comprehensive testers.
τ represents that the response time, (ms, tester was DMS-501, and test condition is 25 ± 0.5 DEG C, and testing cassete is 3.3 micro-
Rice IPS testing cassetes, electrode spacing and electrode width are 10 microns, and frictional direction and electrode angle are 10 °.
Liquid crystal monomer structure in the embodiment of the present invention represents with code, liquid crystal ring structure, end group, the code of linking group
Method for expressing see the table below (one, table (two.
Table (one)：The corresponding code of ring structure
Table (two：End group and the corresponding code for linking group
For example：It is expressed as CC-3-V1,
It is expressed as PGUQU-3-F.
The present invention is described in further details with reference to specific embodiment：
Comparative example 1
Embodiment 1
Embodiment 1 compares comparative example 1, big with refractive index, and dielectric and response have clear improvement, Applicable temperature scope
Width, is particularly suitable for use in large scale, and low box is thick, the TV displays of quick response.
Embodiment 2
Embodiment 2 compares comparative example 1, and dielectric and response time have clear improvement, and refractive index is appropriate, Applicable temperature scope
Width, is particularly suitable for use in large scale, the TV displays of quick response.
Embodiment 3
Embodiment 3 compares comparative example 1, big with refractive index, and dielectric is big, responds fast parameter characteristic, Applicable temperature scope
Width, is particularly suitable for use in small size, and low box is thick, the smart mobile phone display of quick response.
Embodiment 4
Embodiment 4 compares comparative example 1, big with refractive index, and dielectric is big, responds fast parameter characteristic, Applicable temperature scope
Width, is particularly suitable for use in small size, and low box is thick, the smart mobile phone display of quick response.
Embodiment 5
Embodiment 5 compares comparative example 1, big with refractive index, and dielectric is big, responds fast parameter characteristic, Applicable temperature scope
Width, is particularly suitable for use in small size, and low box is thick, the smart mobile phone display of quick response.
Embodiment 6
Embodiment 6, it is smaller with refractive index, fast parameter characteristic is responded, small size, Applicable temperature scope is particularly suitable for use in
Width, the smart mobile phone display of quick response.
Embodiment 7
Embodiment 7, it is moderate with refractive index, fast parameter characteristic is responded, middle size, Applicable temperature scope is particularly suitable for use in
Width, the computer screen display of quick response.
Embodiment 8
Embodiment 8, it is larger with refractive index, fast parameter characteristic is responded, middle size, Applicable temperature scope is particularly suitable for use in
Width, the computer screen display of quick response.
Embodiment 9
Embodiment 9, it is smaller with refractive index, fast parameter characteristic is responded, small size, Applicable temperature scope is particularly suitable for use in
Width, the smart mobile phone display of quick response.
Embodiment 10
Embodiment 10, it is big with refractive index, fast parameter characteristic is responded, large scale, Applicable temperature scope is particularly suitable for use in
Width, the television indicator of quick response.
Embodiment 11
Embodiment 11, it is big with refractive index, fast parameter characteristic is responded, large scale, Applicable temperature scope is particularly suitable for use in
Width, the television indicator of quick response.
Embodiment 12
Embodiment 12, it is appropriate with refractive index, fast parameter characteristic is responded, large scale, Applicable temperature model is particularly suitable for use in
Enclose width, the television indicator of quick response.
Embodiment 13
Embodiment 13, it is appropriate with refractive index, fast parameter characteristic is responded, middle size, Applicable temperature model is particularly suitable for use in
Enclose width, the computer monitor of quick response.
Embodiment 14
Embodiment 14, it is appropriate with refractive index, fast parameter characteristic is responded, small size, Applicable temperature model is particularly suitable for use in
Enclose width, the mobile telephone display of quick response.
Embodiment 15
Embodiment 15, it is appropriate with refractive index, fast parameter characteristic is responded, small size, Applicable temperature model is particularly suitable for use in
Enclose width, the mobile telephone display of quick response.
Embodiment 16
Embodiment 16, it is appropriate with refractive index, fast parameter characteristic is responded, small size, Applicable temperature model is particularly suitable for use in
Enclose width, the mobile telephone display of quick response.
Embodiment 17
Embodiment 17, it is appropriate with refractive index, fast parameter characteristic is responded, large scale, Applicable temperature model is particularly suitable for use in
Enclose width, the television indicator of quick response.
From embodiment 1-17, positive liquid crystal composition of the invention can obtain larger ranges of indices of refraction, dielectric
Scope is adjustable, fast response time and good stability, and the addition of S-1, S-2, S-3, S-4 additive can effectively be lifted mixed
Brilliant UV stability, can be applied to the display of IPS-TFT, FFS-TFT and ocb mode.
Although the present invention only lists the specific material and weight percentage of above-mentioned 17 embodiments, and to composition
The performance of liquid-crystal composition is tested, but the liquid-crystal composition of the present invention can be on the basis of above-described embodiment, profit
With the compound and formula I representated by formula I, II, III, IV, V, VI, VII, VIII, Ⅸ involved in the present invention, II, III,
IVth, V, VI, VII, VIII, Ⅸ preferred compound further expand and change, and can reach the purpose of the present invention.
Claims (10)
1. a kind of liquid-crystal composition includes component A and component B, the component A changes as shown in one or more Formulas I -1 to I-4
Compound is constituted,
The component B as shown in one or more formulas II compound group into,
Wherein,
R1、R2Independently of one another represent carbon number be 1~10 straight chained alkyl, carbon number be 1~10 unbranched alkoxy or
Carbon number is any group in 2~10 straight-chain alkenyl.
2. liquid-crystal composition according to claim 1, it is characterised in that：The liquid-crystal composition is described also comprising component C
Component C as shown in one or more formulas III compound group into
Wherein,
R3、R4Independently of one another represent carbon number be 1~10 straight chained alkyl, carbon number be 1~10 unbranched alkoxy or
Carbon number is any group in 2~10 straight-chain alkenyl.
3. liquid-crystal composition according to claim 2, it is characterised in that：In the liquid-crystal composition, the weight of the component A
It is 1~30% to measure percentage composition, and the weight percentage of the component B is 1~40%, the weight percentage of the component C
For 20~70%.
4. liquid-crystal composition according to claim 1, it is characterised in that：The liquid-crystal composition is described also comprising component D
Component D as shown in one or more formulas IV compound group into
Wherein,
R5、R6Independently of one another represent carbon number be 1~10 straight chained alkyl, carbon number be 1~10 unbranched alkoxy or
Carbon number is any group in 2~10 straight-chain alkenyl.
5. liquid-crystal composition according to claim 1, it is characterised in that：The liquid-crystal composition is described also comprising component E
Component E as shown in one or more formulas V compound group into
Wherein,
R7Represent unbranched alkoxy or carbon number that straight chained alkyl, carbon number that carbon number is 1~10 are 1~10 be 2~
Any group in 10 straight-chain alkenyl.
6. liquid-crystal composition according to claim 4, it is characterised in that：The liquid-crystal composition is described also comprising component F
Compounds of the component F represented by one or more formulas VI -1 and/or VI -2
Wherein,
R8、R9、R10The straight chain alcoxyl that straight chained alkyl, carbon number that carbon number is 1~10 are 1~10 is represented independently of one another
Base or carbon number are any group in 2~10 straight-chain alkenyl；
Represent 1,4- cyclohexylidenes, 1,4- cyclohexenyl groups, one or two H by F independently of one another
Substituted or unsubstituted 1,4- phenylene groups；
Represent one or two H by the substituted or unsubstituted 1,4- phenylene groups of F independently of one another；
L1、L2、L3、L9H or F is represented independently of one another；
X1Represent in the straight-chain alkenyl that straight chained alkyl, unbranched alkoxy or carbon number that F, carbon number are 1~6 are 2~6
Any group, H therein is unsubstituted or monosubstituted or polysubstituted by F by F；
M, n, p represent 0 or 1 independently of one another；
Also, work as p=0, L1=F and L2=L3During=H, X1It is not F.
7. liquid-crystal composition according to claim 5, it is characterised in that：The liquid-crystal composition is described also comprising component G
Component G as shown in one or more formulas VII -1 and/or VII -2 compound group into
Wherein,
R11、R12Represent to represent independently of one another independently of one another straight chained alkyl, carbon number that carbon number is 1~10 be 1~
10 unbranched alkoxy or carbon number is any group in 2~10 straight-chain alkenyl；
L4、L5、L6、L7、L8H or F is represented independently of one another；
X2Represent F or OCF3；
X3Represent F, OCF3, carbon number be 1-5 straight chained alkyl or carbon number be 1-5 unbranched alkoxy；
Q represents 1 or 2；
R represents 0 or 1.
8. the liquid-crystal composition according to claim 6 or 7, it is characterised in that：The liquid-crystal composition also includes component H,
The component H as shown in one or more formulas VIII and/or Ⅸ compound group into
Wherein,
R13、R14、R15、R16Represent to represent the straight chained alkyl, carbon atom that carbon number is 1~10 independently of one another independently of one another
Any group in the straight-chain alkenyl that the unbranched alkoxy or carbon number that number is 1~10 are 2~10.
9. a kind of liquid-crystal composition according to claim 1-8, it is characterised in that：In the liquid-crystal composition, it can also wrap
Containing chiral, anti-oxidant, uvioresistant or polymerizable additive.
10. the liquid crystal display cells comprising the positive dielectric anisotropy liquid crystal composition any one of claim 1-9 or
Liquid crystal display, it is characterised in that：The display element or display are active matrix display element or display, passive matrix
Display element or display.
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| TW106139362A TWI655277B (en) | 2017-06-29 | 2017-11-14 | Liquid crystal composition and liquid crystal display element |
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| CN110467928A (en) * | 2018-05-11 | 2019-11-19 | 石家庄诚志永华显示材料有限公司 | A kind of liquid-crystal composition and liquid crystal display element, liquid crystal display |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN107142116B (en) | 2023-10-03 |
| TWI655277B (en) | 2019-04-01 |
| TW201905173A (en) | 2019-02-01 |
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