JPWO2020095127A5 - - Google Patents
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- JPWO2020095127A5 JPWO2020095127A5 JP2021524299A JP2021524299A JPWO2020095127A5 JP WO2020095127 A5 JPWO2020095127 A5 JP WO2020095127A5 JP 2021524299 A JP2021524299 A JP 2021524299A JP 2021524299 A JP2021524299 A JP 2021524299A JP WO2020095127 A5 JPWO2020095127 A5 JP WO2020095127A5
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- 239000000126 substance Substances 0.000 claims description 58
- 239000006185 dispersion Substances 0.000 claims description 42
- 229920000642 polymer Polymers 0.000 claims description 21
- 239000002245 particle Substances 0.000 claims description 16
- 230000003287 optical effect Effects 0.000 claims description 14
- 239000003381 stabilizer Substances 0.000 claims description 10
- 239000001257 hydrogen Substances 0.000 claims description 8
- 229910052739 hydrogen Inorganic materials 0.000 claims description 8
- 239000000470 constituent Substances 0.000 claims description 6
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical group C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 claims description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 4
- 230000003993 interaction Effects 0.000 claims description 4
- 150000005829 chemical entities Chemical class 0.000 claims 28
- 230000002209 hydrophobic effect Effects 0.000 claims 21
- 229920001400 block copolymer Polymers 0.000 claims 12
- 230000005672 electromagnetic field Effects 0.000 claims 11
- 239000003999 initiator Substances 0.000 claims 11
- 238000000034 method Methods 0.000 claims 10
- 239000002563 ionic surfactant Substances 0.000 claims 7
- 239000000178 monomer Substances 0.000 claims 6
- 239000007908 nanoemulsion Substances 0.000 claims 6
- 238000000862 absorption spectrum Methods 0.000 claims 4
- 238000013507 mapping Methods 0.000 claims 4
- 238000006116 polymerization reaction Methods 0.000 claims 4
- 239000002243 precursor Substances 0.000 claims 4
- 230000003213 activating effect Effects 0.000 claims 3
- 229920000469 amphiphilic block copolymer Polymers 0.000 claims 3
- 239000007788 liquid Substances 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 claims 2
- 230000002441 reversible effect Effects 0.000 claims 2
- PCCVSPMFGIFTHU-UHFFFAOYSA-N tetracyanoquinodimethane Chemical group N#CC(C#N)=C1C=CC(=C(C#N)C#N)C=C1 PCCVSPMFGIFTHU-UHFFFAOYSA-N 0.000 claims 2
- FHCPAXDKURNIOZ-UHFFFAOYSA-N tetrathiafulvalene Chemical group S1C=CSC1=C1SC=CS1 FHCPAXDKURNIOZ-UHFFFAOYSA-N 0.000 claims 2
- 230000000295 complement effect Effects 0.000 claims 1
- 239000006184 cosolvent Substances 0.000 claims 1
- 239000002274 desiccant Substances 0.000 claims 1
- 238000000502 dialysis Methods 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 claims 1
- 238000000926 separation method Methods 0.000 claims 1
- 239000002904 solvent Substances 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
Description
図１３は、安定剤１２０２と活性化可能互変異性体の光学活性形態１１０４との間で形成された錯体を示す図であり、図３の光学活性状態３０８に対応する。安定剤１２０２は、活性化可能互変異性体のプロトン移動性（prototropic）水素１１０５と水素結合するピリジン環を含む。プロトン移動性水素１１０５と、安定剤１２０２のピリジン環の窒素との水素結合を、図中破線で示す。安定剤１２０２のピリジン環と、活性化可能互変異性体のフェニル環とのπ相互作用を、図中斜線で示す。なお、図中いずれの相互作用も正確な縮尺ではない。 FIG. 13 depicts a complex formed between stabilizer 1202 and an optically active form 1104 of an activatable tautomer, corresponding to optically active state 308 of FIG. Stabilizer 1202 includes a pyridine ring that hydrogen bonds with prototropic hydrogen 1105 of the activatable tautomer. A hydrogen bond between the proton-transferable hydrogen 1105 and the nitrogen of the pyridine ring of the stabilizer 1202 is indicated by a dashed line in the figure. The π interaction between the pyridine ring of stabilizer 1202 and the phenyl ring of the activatable tautomer is shown hatched in the figure. Note that none of the interactions in the figures are to scale.
また、粒子のサイズも関係する。したがって、約２０ｎｍ～２００ｎｍの平均サイズを有する粒子を生成することが好ましく、かつ粒子の大半が当該平均サイズから±６０％以内のサイズであることが好ましい。また、粒子のサイズ分布も狭いことが好ましく、粒子の大半が、平均径から約±６０％以内の径を有することが好ましく、平均径から約±３０％以内の径を有することが最も好ましい。粒子が大きいほど、表面積が大きくなることにより、より多くの成分化学物質を担持でき、色変化の強度を高めることができる。しかし、粒子が大きいほど、同じ電荷を有しサイズがより小さい粒子に比べて、電気泳動移動度（electrophoretic mobility）が低下する。そして、ほとんどの用途において、より迅速な状態変化のために電気泳動移動度は高い方が好ましい。帯電ポリマーコア１４０３の表面から延伸し、ポリマーコロナ１４０４を構成するポリマー鎖の長さは、約２ｎｍ～５０ｎｍとすることができる。ポリマー鎖が長いほど、粒子がより多くの成分化学物質を担持できるようになると共に、より多くの成分化学物質が、他の粒子の成分化学物質と相互作用できるようになる。この両方により色変化の強度を高めることができるが、やはり粒子に対する抵抗（drag）が増加し、粒子の電気泳動移動度が低下することになる。 Also the size of the particles is relevant. Thus, it is preferred to produce particles having an average size of about 20 nm to 200 nm, and preferably the majority of particles are within ± 60% of that average size. A narrow size distribution of the particles is also preferred, with the majority of the particles preferably having a diameter within about ± 60% of the mean diameter, and most preferably within about ± 30% of the mean diameter. Larger particles can carry more component chemicals and increase the intensity of the color change due to the greater surface area. However, larger particles have reduced electrophoretic mobility compared to smaller size particles with the same charge. And, in most applications, higher electrophoretic mobility is preferred for faster state changes. The length of the polymer chains extending from the surface of the charged polymer core 1403 and making up the polymer corona 1404 can be between about 2 nm and 50 nm. Longer polymer chains allow particles to carry more constituent chemicals and allow more constituent chemicals to interact with constituent chemicals of other particles. Both can increase the intensity of the color change, but also increase the drag on the particles and reduce the electrophoretic mobility of the particles.
図１９Ｃは、バックライト付き透過型ディスプレイに組み込まれた一例としてのピクセルチャンバ１８００Ｃを示す模式図である。ピクセルチャンバ１８００Ｃは図１９（Ａ）のピクセルチャンバ１８００Ａと同様のため、ピクセルチャンバ１８００Ｃの詳細な説明については、図１９（Ａ）のピクセルチャンバ１８００Ａの説明を参照可能である。ただしピクセルチャンバ１８００Ｃは、反射層１８０８の代わりに、ピクセルチャンバ１８００Ｃをディスプレイパネル１８０６とは反対側から照らすバックライト１８１２を有している。バックライト１８１２から出射した光は電気泳動分散液１４０６を通過し、ピクセルチャンバ１８００Ｃを出て観察者に向かう。バックライト１８１２から出射した光の光学特性は、電気泳動分散液１４０６中の成分化学物質の影響を受ける。 FIG. 19C is a schematic diagram showing an example pixel chamber 1800C incorporated into a backlit transmissive display. Since pixel chamber 1800C is similar to pixel chamber 1800A of FIG. 19A, the detailed description of pixel chamber 1800C can be referred to the description of pixel chamber 1800A of FIG. 19A. However, instead of the reflective layer 1808, the pixel chamber 1800C has a backlight 1812 that illuminates the pixel chamber 1800C from the side opposite the display panel 1806. FIG. Light emitted from the backlight 1812 passes through the electrophoretic dispersion 1406, exits the pixel chamber 1800C, and travels to the viewer. The optical properties of light emitted from backlight 1812 are affected by the constituent chemicals in electrophoretic dispersion 1406 .
Claims (42)
前記電気泳動分散液は、
第１の化学物質と、
第２の化学物質と、を含み、
前記第１の化学物質および前記第２の化学物質は、前記電気泳動分散液を通過する電磁界の変化に応じて、分離状態と光学活性状態との間で切り替わるように可逆的に相互作用するように誘導され、当該電気泳動分散液の光学特性を変化させる、
電気泳動分散液。 An electrophoretic dispersion for use in an electrophoretic display,
The electrophoretic dispersion is
a first chemical;
a second chemical,
The first chemical entity and the second chemical entity reversibly interact to switch between a separated state and an optically active state in response to changes in an electromagnetic field passing through the electrophoretic dispersion. to change the optical properties of the electrophoretic dispersion,
Electrophoretic dispersion.
請求項１に記載の電気泳動分散液。 The optically active state is a reversible state of at least one of the first chemical entity and the second chemical entity due to close interaction of the first chemical entity and the second chemical entity. obtained by chemical or conformational changes,
The electrophoretic dispersion of claim 1.
請求項１または２に記載の電気泳動分散液。 The optical property is an absorption spectrum exhibited by the electrophoretic dispersion,
The electrophoretic dispersion according to claim 1 or 2.
請求項１乃至３のいずれか１項に記載の電気泳動分散液。 The first chemical entity is an electron acceptor, the second chemical entity is an electron donor, and the optically active state is any proportion of the first chemical entity and the second chemical entity. a state of an optically activated charge-transfer complex that exhibits an absorption spectrum that is different from the sum of
The electrophoretic dispersion liquid according to any one of claims 1 to 3.
請求項４に記載の電気泳動分散液。 wherein said electron acceptor is a derivative of tetracyanoquinodimethane and said electron donor is a derivative of tetrathiafulvalene;
The electrophoretic dispersion according to claim 4.
請求項１乃至３のいずれか１項に記載の電気泳動分散液。 The first chemical entity is an activatable tautomer, the second chemical entity is a stabilizer for the activatable tautomer, and the optically active state is the activatable tautomer. including a state in which the isomer is stabilized by the stabilizer,
The electrophoretic dispersion liquid according to any one of claims 1 to 3.
請求項６に記載の電気泳動分散液。 the stabilizer comprises a pyridine ring that hydrogen bonds with the proton-transferable hydrogen of the activatable tautomer;
The electrophoretic dispersion according to claim 6.
前記第２の化学物質は、前記電気泳動分散液中に分散した第２の帯電移動キャリアに付着され、前記第１の化学物質と当該第２の化学物質とは互いに逆の電荷を有し、
前記電気泳動分散液を通過する前記電磁界の変化によって前記第１の帯電移動キャリアおよび前記第２の帯電移動キャリアが分離されることにより、前記第１の化学物質および前記第２の化学物質が前記分離状態となる、
請求項１乃至７のいずれか１項に記載の電気泳動分散液。 said first chemical attached to a first charged mobile carrier dispersed in said electrophoretic dispersion;
said second chemical attached to a second charged mobile carrier dispersed in said electrophoretic dispersion, said first chemical and said second chemical having opposite charges;
The first chemical substance and the second chemical substance are separated by the change in the electromagnetic field passing through the electrophoretic dispersion to separate the first charge mobile carrier and the second charge mobile carrier. be in the separated state;
The electrophoretic dispersion according to any one of claims 1-7.
前記第１の化学物質が付着されるポリマーのコロナと、
前記第１の帯電移動キャリアに正味電荷を付与する帯電コアと、を有する、
請求項８に記載の電気泳動分散液。 The first electrically charged mobile carrier is
a polymeric corona to which the first chemical is attached;
a charged core that imparts a net charge to the first charged mobile carrier;
The electrophoretic dispersion according to claim 8.
請求項９に記載の電気泳動分散液。 The corona of the polymer comprises a block copolymer having a hydrophilic portion and a hydrophobic portion, the hydrophilic portion being functionalized with the first chemical to attach the first chemical to the hydrophilic portion. and the hydrophobic moieties crosslink with other block copolymers in the corona,
The electrophoretic dispersion according to claim 9.
請求項９または１０に記載の電気泳動分散液。 The charged core comprises a hydrophobic monomer that imparts stability to the interior of the charged core, a block copolymer that binds to chemicals, a radical initiator that initiates polymerization of the charged core, and counterions that are removed from the net. an ionic surfactant that contributes to the charge; and
The electrophoretic dispersion according to claim 9 or 10.
請求項１乃至７のいずれか１項に記載の電気泳動分散液。 one of the first chemical and the second chemical attached to a charge transfer carrier dispersed in the electrophoretic dispersion, the other of the first chemical and the second chemical comprising: attached to the inner wall of the pixel chamber containing the electrophoretic dispersion;
The electrophoretic dispersion according to any one of claims 1-7.
前記第１の化学物質および前記第２の化学物質の前記一方が付着されるポリマーのコロナと、
前記帯電移動キャリアに正味電荷を付与する帯電コアと、を有する、
請求項１２に記載の電気泳動分散液。 The charged mobile carrier is
a polymeric corona to which said one of said first chemical and said second chemical is attached;
a charged core that imparts a net charge to the charged mobile carrier;
13. The electrophoretic dispersion of claim 12.
請求項１３に記載の電気泳動分散液。 The corona of the polymer comprises a block copolymer having a hydrophilic portion and a hydrophobic portion, the hydrophilic portion being functionalized with the one of the first chemical entity and the second chemical entity to render the first and the one of the second chemical attached to the hydrophilic portion, and the hydrophobic portion crosslinks with other block copolymers in the corona;
14. The electrophoretic dispersion of claim 13.
請求項１３または１４に記載の電気泳動分散液。 The charged core comprises a hydrophobic monomer that imparts stability to the interior of the charged core, a block copolymer that binds to chemicals, a radical initiator that initiates polymerization of the charged core, and counterions that are removed from the net. an ionic surfactant that contributes to the charge; and
The electrophoretic dispersion according to claim 13 or 14.
前記ピクセルチャンバを通過する電磁界を変化させて前記第１の化学物質および前記第２の化学物質を分離状態と光学活性状態との間で可逆的に切り替わるように誘導し、前記電気泳動分散液の光学特性を変化させる電極と、
前記電極を制御し前記電磁界を変化させて、前記ディスプレイが表示する画像に対応する光学特性を前記ピクセルチャンバが伝達するようにする制御部と、
を含む電気泳動ディスプレイ装置。 a display comprising pixel chambers containing an electrophoretic dispersion containing a first chemical and a second chemical and transmitting optical properties of the electrophoretic dispersion;
changing an electromagnetic field passing through the pixel chamber to induce the first chemical entity and the second chemical entity to reversibly switch between a separated state and an optically active state; an electrode that changes the optical properties of
a controller for controlling the electrodes to vary the electromagnetic field such that the pixel chambers transmit optical properties corresponding to images displayed by the display;
an electrophoretic display device.
請求項１６に記載の電気泳動ディスプレイ装置。 The optically active state is a reversible state of at least one of the first chemical entity and the second chemical entity due to close interaction of the first chemical entity and the second chemical entity. obtained by chemical or conformational changes,
17. The electrophoretic display device of Claim 16.
請求項１６または１７に記載の電気泳動ディスプレイ装置。 The optical property is an absorption spectrum exhibited by the electrophoretic dispersion,
18. An electrophoretic display device according to claim 16 or 17.
請求項１６乃至１８のいずれか１項に記載の電気泳動ディスプレイ装置。 The first chemical entity is an electron acceptor, the second chemical entity is an electron donor, and the optically active state is any proportion of the first chemical entity and the second chemical entity. a state of an optically activated charge-transfer complex that exhibits an absorption spectrum that is different from the sum of
19. An electrophoretic display device according to any one of claims 16-18.
請求項１９に記載の電気泳動ディスプレイ装置。 wherein said electron acceptor is a derivative of tetracyanoquinodimethane and said electron donor is a derivative of tetrathiafulvalene;
20. The electrophoretic display device of Claim 19.
請求項１６乃至１８のいずれか１項に記載の電気泳動ディスプレイ装置。 The first chemical entity is an activatable tautomer, the second chemical entity is a stabilizer for the activatable tautomer, and the optically active state is the activatable tautomer. including a state in which the isomer is stabilized by the stabilizer,
19. An electrophoretic display device according to any one of claims 16-18.
請求項２１に記載の電気泳動ディスプレイ装置。 the stabilizer comprises a pyridine ring that hydrogen bonds with the proton-transferable hydrogen of the activatable tautomer;
22. The electrophoretic display device of claim 21.
前記第２の化学物質は、前記電気泳動分散液中に分散した第２の帯電移動キャリアに付着され、前記第１の化学物質と当該第２の化学物質とは互いに逆の電荷を有し、
前記電気泳動分散液の変化によって前記第１の帯電移動キャリアおよび前記第２の帯電移動キャリアが分離されることにより、前記第１の化学物質および前記第２の化学物質が前記分離状態となる、
請求項１６乃至２２のいずれか１項に記載の電気泳動ディスプレイ装置。 said first chemical attached to a first charged mobile carrier dispersed in said electrophoretic dispersion;
said second chemical attached to a second charged mobile carrier dispersed in said electrophoretic dispersion, said first chemical and said second chemical having opposite charges;
the first chemical substance and the second chemical substance are brought into the separated state by the separation of the first charged mobile carrier and the second charged mobile carrier by the change in the electrophoretic dispersion;
23. An electrophoretic display device according to any one of claims 16-22.
前記第１の化学物質が付着されるポリマーのコロナと、
前記第１の帯電移動キャリアに正味電荷を付与する帯電コアと、を有する、
請求項２３に記載の電気泳動ディスプレイ装置。 The first electrically charged mobile carrier is
a polymeric corona to which the first chemical is attached;
a charged core that imparts a net charge to the first charged mobile carrier;
24. The electrophoretic display device of Claim 23.
請求項２４に記載の電気泳動ディスプレイ装置。 The corona of the polymer comprises a block copolymer having a hydrophilic portion and a hydrophobic portion, the hydrophilic portion being functionalized with the first chemical to attach the first chemical to the hydrophilic portion. and the hydrophobic moieties crosslink with other block copolymers in the corona,
25. The electrophoretic display device of Claim 24.
請求項２４または２５に記載の電気泳動ディスプレイ装置。 The charged core comprises a hydrophobic monomer that imparts stability to the interior of the charged core, a block copolymer that binds to chemicals, a radical initiator that initiates polymerization of the charged core, and counterions that are removed from the net. an ionic surfactant that contributes to the charge; and
26. An electrophoretic display device according to claim 24 or 25.
請求項１６乃至２２のいずれか１項に記載の電気泳動ディスプレイ装置。 one of the first chemical and the second chemical attached to a charge transfer carrier dispersed in the electrophoretic dispersion, the other of the first chemical and the second chemical comprising: attached to the inner wall of the pixel chamber;
23. An electrophoretic display device according to any one of claims 16-22.
前記第１の化学物質および前記第２の化学物質の前記一方が付着されるポリマーのコロナと、
前記帯電移動キャリアに正味電荷を付与する帯電コアと、を有する、
請求項２７に記載の電気泳動ディスプレイ装置。 The charged mobile carrier is
a polymeric corona to which said one of said first chemical and said second chemical is attached;
a charged core that imparts a net charge to the charged mobile carrier;
28. The electrophoretic display device of Claim 27.
請求項２８に記載の電気泳動ディスプレイ装置。 The corona of the polymer comprises a block copolymer having a hydrophilic portion and a hydrophobic portion, the hydrophilic portion being functionalized with the one of the first chemical entity and the second chemical entity to render the first and the one of the second chemical attached to the hydrophilic portion, and the hydrophobic portion crosslinks with other block copolymers in the corona;
29. The electrophoretic display device of Claim 28.
請求項２８または２９に記載の電気泳動ディスプレイ装置。 The charged core comprises a hydrophobic monomer that imparts stability to the interior of the charged core, a block copolymer that binds to chemicals, a radical initiator that initiates polymerization of the charged core, and counterions that are removed from the net. an ionic surfactant that contributes to the charge; and
30. An electrophoretic display device according to claim 28 or 29.
請求項１６乃至３０のいずれか１項に記載の電気泳動ディスプレイ装置。 the pixel chamber includes a plurality of horizontal pixel layers stacked orthogonal to a viewing direction of the electrophoretic display device;
31. An electrophoretic display device according to any one of claims 16-30.
請求項１６乃至３０のいずれか１項に記載の電気泳動ディスプレイ装置。 the pixel chambers comprise a plurality of vertical pixel chambers arranged next to each other parallel to a viewing direction of the electrophoretic display device;
31. An electrophoretic display device according to any one of claims 16-30.
前記電気泳動ディスプレイ装置に表示される画像を表す画像データを取得することと、
電磁界によって誘導された際に第１の光学特性を示して分離状態を取り、電磁界によって誘導された際に第２の光学特性を示して活性状態を取る成分化学物質を収容するピクセルチャンバを制御する前記電気泳動ディスプレイ装置のピクセル電極に対する電圧のマッピングを生成することと、
前記ピクセル電極に前記電圧のマッピングを適用して、前記成分化学物質に前記分離状態または前記活性状態を取らせることと、
を含む方法。 A method for operating an electrophoretic display device comprising:
obtaining image data representing an image to be displayed on the electrophoretic display device;
A pixel chamber containing a component chemical that exhibits a first optical property and assumes an isolated state when induced by an electromagnetic field and exhibits a second optical property and assumes an active state when induced by an electromagnetic field. generating a mapping of voltages to pixel electrodes of the electrophoretic display device to control;
applying the mapping of the voltages to the pixel electrodes to cause the constituent chemicals to assume the separated state or the active state;
method including.
電気泳動ディスプレイ装置に表示される画像を表す画像データを取得することと、
電磁界によって誘導された際に第１の光学特性を示して分離状態を取り、電磁界によって誘導された際に第２の光学特性を示して活性状態を取る成分化学物質を収容するピクセルチャンバを制御する前記電気泳動ディスプレイ装置のピクセル電極に対する電圧のマッピングを生成することと、
前記ピクセル電極に前記電圧のマッピングを適用して、前記成分化学物質に前記分離状態または前記活性状態を取らせることと、
を実行させるための命令を含む非一時的機械可読記憶媒体。 to the processor of the computer equipment,
obtaining image data representing an image to be displayed on the electrophoretic display device;
A pixel chamber containing a component chemical that exhibits a first optical property and assumes an isolated state when induced by an electromagnetic field and exhibits a second optical property and assumes an active state when induced by an electromagnetic field. generating a mapping of voltages to pixel electrodes of the electrophoretic display device to control;
applying the mapping of the voltages to the pixel electrodes to cause the constituent chemicals to assume the separated state or the active state;
A non-transitory machine-readable storage medium containing instructions for causing the
帯電ポリマーコアを作製することと、
ポリマーコロナまたは当該ポリマーコロナの前駆体を作製することと、
電磁界によって誘導された際に第１の光学特性を示して分離状態を取り、電磁界によって誘導された際に第２の光学特性を示して活性状態を取る成分化学物質を前記ポリマーコロナまたは当該ポリマーコロナの前駆体に埋め込むことと、
を含む方法。 A method for producing an electrophoretic dispersion for use in an electrophoretic display, comprising:
creating a charged polymer core;
making a polymeric corona or a precursor of said polymeric corona;
A component chemical that exhibits a first optical property and assumes an isolated state when induced by an electromagnetic field and exhibits a second optical property and assumes an active state when induced by an electromagnetic field is the polymer corona or the embedding in a precursor of the polymer corona;
method including.
前記成分化学物質を前記ポリマーコロナまたは当該ポリマーコロナの前駆体に埋め込むことは、当該成分化学物質を当該ポリマーコロナに埋め込むことを含む、
請求項３５に記載の方法。 fabricating the polymeric corona or a precursor of the polymeric corona comprises fabricating the polymeric corona around the charged polymeric core;
embedding the component chemical in the polymer corona or a precursor of the polymer corona comprises embedding the component chemical in the polymer corona;
36. The method of claim 35.
両親媒性ブロックコポリマーと、疎水性モノマーと、イオン性界面活性剤と、ラジカル開始剤とを疎水性相中で混合することと、
前記疎水性相を親水性相と混合し、当該親水性相中に懸濁した疎水性液滴と当該疎水性液滴の周囲に融合したイオン性界面活性剤とを含むナノエマルションを形成することと、
前記ラジカル開始剤を活性化させて前記両親媒性ブロックコポリマーの疎水性ブロックと前記疎水性モノマーとを架橋することにより、前記イオン性界面活性剤によって電荷が付与されるポリマーコロナを有するポリマー粒子を形成することと、
前記ナノエマルションを親油性対イオンと混合し、前記ポリマー粒子の前記電荷を中和することと、
前記ポリマー粒子の前記ポリマーコロナを官能化して、当該ポリマー粒子の前記両親媒性ブロックコポリマーの親水性ブロックに化学物質を結合することにより前記電気泳動分散液の第１の部分を形成することと、を含み、当該化学物質は、当該電気泳動分散液を通過する電磁界の変化に応じて、当該電気泳動分散液の第２の部分における相補的成分化学物質と相互作用するように誘導され、当該電気泳動分散液の光学特性を変化させる、
方法。 A method for producing an electrophoretic dispersion for use in an electrophoretic display, comprising:
mixing an amphiphilic block copolymer, a hydrophobic monomer, an ionic surfactant and a radical initiator in a hydrophobic phase;
mixing the hydrophobic phase with a hydrophilic phase to form a nanoemulsion comprising hydrophobic droplets suspended in the hydrophilic phase and an ionic surfactant fused around the hydrophobic droplets; When,
activating the radical initiator to crosslink the hydrophobic block of the amphiphilic block copolymer with the hydrophobic monomer to form a polymer particle having a polymer corona charged by the ionic surfactant; forming;
mixing the nanoemulsion with a lipophilic counterion to neutralize the charge of the polymer particles;
functionalizing the polymer corona of the polymer particles to form a first portion of the electrophoretic dispersion by attaching chemicals to the hydrophilic blocks of the amphiphilic block copolymers of the polymer particles; wherein the chemical is induced to interact with a complementary component chemical in a second portion of the electrophoretic dispersion in response to a change in an electromagnetic field passing through the electrophoretic dispersion; changing the optical properties of the electrophoretic dispersion;
Method.
請求項３７に記載の方法。 wherein the radical initiator is a photoinitiator and activating the initiator comprises exposing the nanoemulsion to ultraviolet light;
38. The method of claim 37.
請求項３７に記載の方法。 wherein the radical initiator is a thermal initiator and activating the initiator comprises heating the nanoemulsion;
38. The method of claim 37.
請求項３７乃至３９のいずれか１項に記載の方法。 further comprising adding a co-solvent to the hydrophobic phase prior to mixing the hydrophobic phase with the hydrophilic phase to improve mixing with the hydrophilic phase;
40. The method of any one of claims 37-39.
請求項３７乃至４０のいずれか１項に記載の方法。 removing excess water from the nanoemulsion prior to functionalizing the polymer corona with the chemical by one or more of dialysis of the nanoemulsion, solvent exchange, and addition of a desiccant; further including,
41. The method of any one of claims 37-40.
請求項３７乃至４１のいずれか１項に記載の方法。 further comprising mixing the first portion of the electrophoretic dispersion with the second portion of the electrophoretic dispersion;
42. The method of any one of claims 37-41.
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| US62/755,767 | 2018-11-05 | ||
| US62/755,746 | 2018-11-05 | ||
| PCT/IB2019/058306 WO2020095127A1 (en) | 2018-11-05 | 2019-09-30 | Optical activation of chemical entities in electrophoretic dispersions for display devices |
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| US6825290B2 (en) * | 2001-05-04 | 2004-11-30 | Rhodia Inc. | Process for the preparation of latices using block copolymers as surfactants |
| KR20030025622A (en) * | 2001-09-21 | 2003-03-29 | 한국화학연구원 | Vinyl substituted diarylethenes and polymer their from |
| TWI310098B (en) * | 2002-05-03 | 2009-05-21 | Sipix Imaging Inc | Methods of surface modification for improving electrophoretic display performance |
| US6865011B2 (en) * | 2002-07-30 | 2005-03-08 | The University Of British Columbia | Self-stabilized electrophoretically frustrated total internal reflection display |
| US7339715B2 (en) * | 2003-03-25 | 2008-03-04 | E Ink Corporation | Processes for the production of electrophoretic displays |
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| WO2011058725A1 (en) * | 2009-11-10 | 2011-05-19 | パナソニック株式会社 | Display device and method of manufacture thereof |
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| US20130193385A1 (en) * | 2012-01-27 | 2013-08-01 | Yu Li | Electrophoretic dispersion |
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