CN111323983A - Electrophoresis liquid for improving low-temperature resistance of electronic paper - Google Patents

Electrophoresis liquid for improving low-temperature resistance of electronic paper Download PDF

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Publication number
CN111323983A
CN111323983A CN202010195391.2A CN202010195391A CN111323983A CN 111323983 A CN111323983 A CN 111323983A CN 202010195391 A CN202010195391 A CN 202010195391A CN 111323983 A CN111323983 A CN 111323983A
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Prior art keywords
control agent
charge control
group
electronic paper
chain
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CN202010195391.2A
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CN111323983B (en
Inventor
李捷妮
吴梓荣
陈嵘
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Shenzhen AV Display Co Ltd
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Shenzhen AV Display Co Ltd
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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 
    • G02F1/165—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 translational movement of particles in a fluid under the influence of an applied field
    • G02F1/166—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 translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect
    • G02F1/167—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 translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect by electrophoresis
    • 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 
    • G02F1/165—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 translational movement of particles in a fluid under the influence of an applied field
    • G02F1/1675—Constructional details
    • 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 
    • G02F1/165—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 translational movement of particles in a fluid under the influence of an applied field
    • G02F1/1675—Constructional details
    • G02F2001/1678—Constructional details characterised by the composition or particle type

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Molecular Biology (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)

Abstract

The invention provides an electrophoretic fluid for improving the low-temperature resistance of electronic paper, which comprises a charge control agent, wherein the charge control agent is a surfactant with an anchoring group at one end and a solvation chain group at the other end and/or a surfactant with a hydrophilic group at one end and an oleophilic group at the other end. The electrophoretic fluid has low temperature resistance, and can be used in high latitude or low temperature areas in the application of electronic paper.

Description

Electrophoresis liquid for improving low-temperature resistance of electronic paper
Technical Field
The invention belongs to the technical field of electronic paper, and particularly relates to an electrophoretic fluid for improving low-temperature resistance of electronic paper.
Background
Electronic paper is becoming more popular in the market as a thin and flexible display device, and electronic books have been widely used in the direction of billboards and price display boards in recent years in addition to consumer electronics. The electrophoretic particles are the core of electrophoretic display, and have good effects of protecting eyes, reducing energy consumption, protecting environment and the like through a light-source-free turnover display mode.
The low-temperature performance of the electronic paper determines whether the electronic paper can be applied to a larger area, such as a high-latitude area, and a low-temperature refrigeration area and a fresh-frozen area which are used as price display boards and applied to supermarkets. The core of the electronic paper is an electrophoretic display microcapsule or an electrophoretic display liquid, the system has a plurality of materials, and the display effect of the electronic paper is influenced by the performance of various materials.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: aiming at the problems in the prior art, the electrophoresis liquid for improving the low temperature resistance of the electronic paper is provided.
In order to solve the technical problem, the invention provides an electrophoretic fluid for improving the low-temperature resistance of electronic paper, which comprises a charge control agent, wherein the charge control agent is a surfactant with an anchoring group at one end and a solvation chain group at the other end and/or a surfactant with a hydrophilic group at one end and an oleophilic group at the other end.
Further, the electrophoretic fluid includes a first charge control agent, a second charge control agent, and a third charge control agent, the first charge control agent and the second charge control agent are surfactants having an anchor group at one end and a solvating chain group at the other end, the third charge control agent is a surfactant having a hydrophilic group at one end and an oleophilic group at the other end, the first charge control agent: a second charge control agent: the weight ratio of the third charge control agent is (0.2-10): 0.1-2).
Further, the electrophoretic fluid also comprises electrophoretic particles and a dispersion medium, and the electrophoretic fluid is encapsulated by a microcapsule or encapsulated in a microcup type when in use.
Further, the anchor group of the first charge control agent includes-NH3+、-COO+、-SO3+At least one of polyamine and polyether.
Further, the solvating chain group of the first charge control agent may be at least one of a polyolefin chain, a polyacrylic chain, and a polyester chain.
Further, the anchor group of the second charge control agent includes-COOH, -SO3H、-PO42-、 -R2At least one of a polyol and a polyether.
Further, the solvating chain group of the second charge control agent may be at least one of a polyolefin chain, a polyacrylic chain, a polyester chain, a polyether chain, and a block copolymer chain.
Further, the first charge control agent and the second charge control agent include, but are not limited to, the following types: easytech ST-5050, Easytech DT-2100, Teric 168, Teric 169, zetasperse 2100, zetasperse 3100, zetasperse 3400, zetasperse 3600, Efka4010, Efka4060, Efka 5065, Efka6745, Efka6750, solsperse3000, solsperse8000, solsperse17000, solsperse18000, solsperse19000, solsperse21000, solsperse32500, solsperse36600, Disper BYK-161, Disper K-163, Disper BYK-174, Disper BYK-184, Disper BYK-190, CH-10, CH-7, CH-9A, CH-9B, CH-11, CH-8.
Further, the third charge control agent may be at least one of a nonionic surfactant, a cationic surfactant, an anionic surfactant, and a zwitterionic surfactant.
Further, the third charge control agent includes, but is not limited to, at least one of the following surfactants: span20, span80, span85, AES6501, AEO9, Surfynol MD-20, Surfynol 104E, OP-10, fluorocarbon surfactant F901 and SDS.
The invention provides an electrophoretic fluid for improving the low-temperature resistance of electronic paper, which comprises a charge control agent, wherein the charge control agent is a surfactant with an anchoring group at one end and a solvation chain group at the other end and/or a surfactant with a hydrophilic group at one end and an oleophilic group at the other end. The electrophoretic fluid has low temperature resistance, and can be used in high latitude or low temperature areas in the application of electronic paper.
Detailed Description
In order to explain technical contents, structural features, and objects and effects of the present invention in detail, the following description is given in detail with reference to the embodiments.
Example 1
The invention provides an electrophoretic fluid for improving the low-temperature resistance of electronic paper, which comprises a charge control agent, wherein the charge control agent is a surfactant with an anchoring group at one end and a solvation chain group at the other end and/or a surfactant with a hydrophilic group at one end and an oleophilic group at the other end. In this embodiment, the electrophoretic fluid includes a first charge control agent and a second charge control agent, the first charge control agent and the second charge control agent are surfactants having an anchor group at one end and a solvation chain group at the other end, the first charge control agent: the weight ratio of the second charge control agent is (0.2-10) to (0.2-10).
Further, in this example, 45G of the carbon black pigment which had been treated was weighed out, 140G of the titanium dioxide pigment which had been treated was weighed out, and added to 470G of Isopar G solvent at a rotation speed of 100rpm, and after stirring and wetting for 10min, the rotation speed was adjusted to 450rpm, and 10G of Efka4010 as a first charge control agent and 1.5G of Easytech ST-5050 as a second charge control agent were weighed out into the reactor. The reactor is stirred for more than 48 hours under the condition of keeping the temperature of 60-85 ℃. The electrophoretic solution is wrapped in microcapsules to prepare a displayable electronic paper module. Pour point testing revealed that Efka4010 had a pour point of-18 ℃ and Esytech ST-5050 had a pour point of-20 ℃. After the microcapsule prepared by the electrophoretic solution compounded by the compound charge control agent is prepared into a display module, the microcapsule can show good effect under the low temperature condition of-10 ℃ and can also show the corresponding effect under the low temperature condition of-20 ℃.
Example 2
The invention provides an electrophoretic fluid for improving the low-temperature resistance of electronic paper, which comprises a charge control agent, wherein the charge control agent is a surfactant with an anchoring group at one end and a solvation chain group at the other end and/or a surfactant with a hydrophilic group at one end and an oleophilic group at the other end. In this embodiment, the electrophoretic fluid includes a first charge control agent, a second charge control agent, and a third control agent, the first charge control agent and the second control agent are surfactants having an anchor group at one end and a solvated chain group at the other end, the third charge control agent is a surfactant having a hydrophilic group at one end and an oleophilic group at the other end, the first charge control agent: a second charge control agent: the weight ratio of the third charge control agent is (0.2-10): 0.1-2).
Further, in this example, 45G of the treated indigo blue pigment, 140G of the treated titanium yellow pigment, 470G of Isopar G solvent at 100rpm were weighed, stirred and wetted for 10min, then adjusted to 450rpm, 5G of solsperse3000 as the first charge control agent, 10G of zetasperse 3600 as the second charge control agent, 0.5G of surfynol 104E as the third charge control agent, and added to the reactor, and the reactor was kept at 60 ℃ to 85 ℃ and stirred for more than 48 hours. The electrophoretic solution is wrapped in a microcapsule to prepare a displayable electronic paper module, and the glass transition temperature of solsperse3000 is detected to be-40 ℃. The pour point of Zetasperse 3600 was-10 ℃. The microcapsule prepared by the electrophoretic solution compounded by the compound charge control agent can show good display at the low temperature of-10 ℃ and also can show good display at the low temperature of-20 ℃ after being prepared into a display module.
Example 3
The invention provides an electrophoretic fluid for improving the low-temperature resistance of electronic paper, which comprises a charge control agent, wherein the charge control agent is a surfactant with an anchoring group at one end and a solvation chain group at the other end and/or a surfactant with a hydrophilic group at one end and an oleophilic group at the other end. In this embodiment, the electrophoretic fluid includes a second charge control agent and a third charge control agent, the second control agent is a surfactant having an anchor group at one end and a solvating chain group at the other end, the third charge control agent is a surfactant having a hydrophilic group at one end and an oleophilic group at the other end, the second charge control agent: the weight ratio of the third charge control agent is (0.2-10) to (0.1-2).
Further, in this example, 45G of the treated organic red-red pigment, 140G of the treated titanium white pigment, was weighed, added to 470G of Isopar G solvent at 100rpm, stirred and wetted for 10min, then adjusted to 450rpm, 10G of zataspheres 3600 was weighed as the second charge control agent, 0.8G of SDS was weighed as the third charge control agent, added to the reactor, and stirred for more than 48h with the reactor maintained at 60 ℃ -85 ℃. The electrophoretic solution is wrapped in a microcapsule to prepare a displayable electronic paper display module, the pour point of zetasperse 3600 is detected to be-10 ℃, and the microcapsule prepared by the electrophoretic solution compounded by the compound charge control agent can display well at the low temperature of 0 ℃ and can display well at the low temperature of-10 ℃ after being prepared into the display module.
Example 4
The invention provides an electrophoretic fluid for improving the low-temperature resistance of electronic paper, which comprises a charge control agent, wherein the charge control agent is a surfactant with an anchoring group at one end and a solvation chain group at the other end and/or a surfactant with a hydrophilic group at one end and an oleophilic group at the other end. In this embodiment, the electrophoretic fluid includes a first charge control agent which is a surfactant having an anchor group at one end and a solvated chain group at the other end, and a third charge control agent which is a surfactant having a hydrophilic group at one end and an oleophilic group at the other end, the first charge control agent: the weight ratio of the third charge control agent is (0.2-10) to (0.1-2).
Further, in this example, 45G of the treated black copper-chromium black pigment, 140G of the treated white titanium white pigment, was weighed, added to 470G of Isopar G solvent at a rotation speed of 100rpm, stirred and wetted for 10min, then adjusted to a rotation speed of 450rpm, 10G of solsperse17000 was weighed as the first charge control agent, 2G of span80 was weighed as the third charge control agent, added to the reactor, and stirred for more than 48h while maintaining the reactor at 60 ℃ -85 ℃. The electrophoretic solution is wrapped in a microcapsule to prepare a displayable electronic paper display module, the glass transition temperature of solsperse17000 is detected to be-40 ℃, and the microcapsule prepared by the electrophoretic solution compounded by the compound charge control agent can display well under the low temperature condition of 5 ℃ below zero and can display well under the low temperature condition of 5 ℃ below zero.
In summary, the electrophoretic solution for improving the low temperature resistance of the electronic paper provided by the invention comprises a charge control agent, wherein the charge control agent is a surfactant with an anchor group at one end and a solvation chain group at the other end and/or a surfactant with a hydrophilic group at one end and an oleophilic group at the other end, the solvation chain groups of the first charge control agent and the second charge control agent are compatible with a dispersion medium, and have medium and low polarities, and the three charge control agents can be compounded at will. The electrophoretic fluid has low temperature resistance, and can be used in high latitude or low temperature areas in the application of electronic paper.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (10)

1. The electrophoretic fluid is characterized by comprising a charge control agent, wherein the charge control agent is a surfactant with an anchoring group at one end and a solvation chain group at the other end and/or a surfactant with a hydrophilic group at one end and an oleophilic group at the other end.
2. The electrophoretic fluid for improving the low temperature resistance of the electronic paper as claimed in claim 1, wherein the electrophoretic fluid comprises a first charge control agent, a second charge control agent and a third charge control agent, the first charge control agent and the second charge control agent are surfactants having an anchor group at one end and a solvation chain group at the other end, the third charge control agent is a surfactant having a hydrophilic group at one end and an oleophilic group at the other end, and the weight ratio of the first charge control agent to the second charge control agent to the third charge control agent is (0.2-10): (0.1-2).
3. The electrophoretic fluid for improving the low temperature resistance of the electronic paper as claimed in claim 1 or 2, further comprising electrophoretic particles and a dispersion medium, wherein the electrophoretic fluid is encapsulated by a microcapsule or encapsulated in a microcup type in use.
4. The method of claim 2 for improving electronic paper low resistanceA temperature-sensitive electrophoretic fluid, wherein the anchoring group of the first charge control agent comprises-NH3+、-COO+、-SO3+At least one of polyamine and polyether.
5. The electrophoretic fluid for improving the low temperature resistance of electronic paper as claimed in claim 4, wherein the solvating chain group of the first charge control agent is at least one of a polyolefin chain, a polyacrylic chain and a polyester chain.
6. The electrophoretic fluid for improving the low temperature resistance of electronic paper as claimed in claim 4 or 5, wherein the anchoring group of the second charge control agent comprises-COOH, -SO3H、-PO4 2-、-R2At least one of a polyol and a polyether.
7. The electrophoretic fluid for improving the low temperature resistance of electronic paper as claimed in claim 6, wherein the solvating chain group of the second charge control agent is at least one of a polyolefin chain, a polyacrylic chain, a polyester chain, a polyether chain, and a block copolymer chain.
8. The electrophoretic fluid for improving the low temperature resistance of electronic paper as claimed in claim 7, wherein the first charge control agent and the second charge control agent include, but are not limited to, the following types: easytech ST-5050, Easytech DT-2100, Teric 168, Teric 169, zetasperse 2100, zetasperse 3100, zetasperse 3400, zetasperse 3600, Efka4010, Efka4060, Efka 5065, Efka6745, Efka6750, solsperse3000, solsperse8000, solsperse17000, solsperse18000, solsperse19000, solsperse21000, solsperse32500, solsperse36600, Disper BYK-161, Disper K-163, Disper BYK-174, Disper BYK-184, Disper BYK-190, CH-10, CH-7, CH-9A, CH-9B, CH-11, CH-8.
9. The electrophoretic fluid for improving the low temperature resistance of electronic paper according to claim 7 or 8, wherein the third charge control agent is at least one of a nonionic surfactant, a cationic surfactant, an anionic surfactant, and a zwitterionic surfactant.
10. The electrophoretic fluid for improving the low temperature resistance of electronic paper as claimed in claim 9, wherein the third charge control agent includes but is not limited to at least one of the following surfactants: span20, span80, span85, AES6501, AEO9, Surfynol MD-20, Surfynol 104E, OP-10, fluorocarbon surfactant F901 and SDS.
CN202010195391.2A 2020-03-19 2020-03-19 Electrophoresis liquid for improving low-temperature resistance of electronic paper Active CN111323983B (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1979319A (en) * 2005-12-01 2007-06-13 北京化工大学 Method for preparing black-white electrophoresis display liquid used for electronic ink
CN101550288A (en) * 2009-05-15 2009-10-07 北京化工大学 Preparation method of colourful electrophoresis disclosing solution for electronic ink display
KR20110074144A (en) * 2009-12-24 2011-06-30 엘지디스플레이 주식회사 A electrophoretic light converting particle and electrophoretic display device having the same
JP2011242569A (en) * 2010-05-18 2011-12-01 Seiko Epson Corp Driving method of electrophoresis display device, electrophoresis display device, controlling circuit of electrophoresis display device and electronic equipment
CN102314039A (en) * 2011-08-18 2012-01-11 天津大学 Composition of black and white electrophoretic display liquid for electrophoretic display and preparation method thereof
CN107573754A (en) * 2017-09-30 2018-01-12 维波斯新材料(潍坊)有限公司 A kind of alkaline dispersing agent for not containing secondary amine and its application in the dispersion containing solid particle
CN110172164A (en) * 2019-05-14 2019-08-27 深圳清华大学研究院 The double-colored amphiphilic Janus particle of one kind and quick response electronic ink screen

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1979319A (en) * 2005-12-01 2007-06-13 北京化工大学 Method for preparing black-white electrophoresis display liquid used for electronic ink
CN101550288A (en) * 2009-05-15 2009-10-07 北京化工大学 Preparation method of colourful electrophoresis disclosing solution for electronic ink display
KR20110074144A (en) * 2009-12-24 2011-06-30 엘지디스플레이 주식회사 A electrophoretic light converting particle and electrophoretic display device having the same
JP2011242569A (en) * 2010-05-18 2011-12-01 Seiko Epson Corp Driving method of electrophoresis display device, electrophoresis display device, controlling circuit of electrophoresis display device and electronic equipment
CN102314039A (en) * 2011-08-18 2012-01-11 天津大学 Composition of black and white electrophoretic display liquid for electrophoretic display and preparation method thereof
CN107573754A (en) * 2017-09-30 2018-01-12 维波斯新材料(潍坊)有限公司 A kind of alkaline dispersing agent for not containing secondary amine and its application in the dispersion containing solid particle
CN110172164A (en) * 2019-05-14 2019-08-27 深圳清华大学研究院 The double-colored amphiphilic Janus particle of one kind and quick response electronic ink screen

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