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公开(公告)号：US11749218B2
公开(公告)日：2023-09-05
申请号：US17023687
申请日：2020-09-17
申请人： E INK CORPORATION
发明人： Peter Carsten Bailey Widger , Jay William Anseth , Richard J. Paolini, Jr. , Mark Benjamin Romanowsky , Jillian Smith , Stephen J. Telfer , Craig Alan Breen , Stephen Bull
IPC分类号： G02B26/00 , G09G3/34 , G02F1/167 , C09B67/08 , G02F1/1676 , G02F1/16757 , G02F1/1677 , G02F1/1675 , B82Y30/00
CPC分类号： G09G3/344 , C09B67/0013 , G02F1/167 , G02F1/1675 , G02F1/1676 , G02F1/1677 , G02F1/16757 , B82Y30/00 , G02F2001/1678 , G02F2202/022 , G02F2202/28 , G09G2320/0233
摘要： A variable transmission film may include an electrophoretic medium having a plurality of capsules and a binder, each capsule containing a plurality of electrically charged particles and a fluid, the charged particles being movable by application of an electric field and being capable of being switched between an open state and a closed state. The film may include at least one of a binder containing fish gelatin and a polyanion; a binder containing one or more tinting agents; capsules containing charge control agents, such as an oligoamine-terminated polyolefin and a branched chain fatty acid comprising at least 8 carbon atoms; a selection of capsules in which at least 60% have a diameter between 50 μm and 90 μm and at least 15% have a diameter between 20 μm and 49 μm; a tinted adhesive layer; and a fluid selected from one or more nonconjugated olefinic hydrocarbons.
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公开(公告)号：US11143930B2
公开(公告)日：2021-10-12
申请号：US16446845
申请日：2019-06-20
申请人： E Ink Corporation
IPC分类号： G02F1/1685 , G02F1/167
摘要： A method of driving a variable transmission film is provided and a variable transmission device including the film and a controller configured to drive the film. The film may include a layer of electrophoretic material and at least one electrode, the electrophoretic material including a fluid containing a plurality of charged particles capable of moving through the fluid upon application of an electric field by the at least one electrode. The method may include applying a first voltage waveform to the film at an initial optical state and applying a second voltage waveform having a lower frequency and shorter pulse duration than the first voltage waveform to switch the film to a final optical state, wherein the film has a higher percent transmission at the initial optical state than the final optical state.
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公开(公告)号：US10983410B2
公开(公告)日：2021-04-20
申请号：US16008230
申请日：2018-06-14
申请人： E INK CORPORATION
IPC分类号： G09G3/34 , G02F1/167 , G02F1/16756 , G02F1/16757
摘要： An electro-optic medium exhibiting reduced haze and having other improved properties may be obtained by including a binder containing fish gelatin and acacia. The electro-optic medium may include a plurality of capsules in a binder, each capsule containing a plurality of electrically charged particles and a fluid, the charged particles being movable by application of an electric field.
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公开(公告)号：US12025901B2
公开(公告)日：2024-07-02
申请号：US17156911
申请日：2021-01-25
申请人： E INK CORPORATION
IPC分类号： G02F1/1675 , C09B67/08 , G02F1/167
CPC分类号： G02F1/1675 , C09B67/0007 , G02F1/167 , G02F2001/1678 , G02F2202/022 , G02F2202/28
摘要： An electrophoretic medium comprises a plurality of core-shell particles and a non-polar fluid. The core-shell particles comprise an organic pigment particles core and a shell comprising a metal oxide layer and a silane layer. The metal oxide layer may have a thickness of 0.4 to 2 nm. It may be formed using a fluidized bed reactor by inserting the organic pigment into the reactor as a powder bed, contacting the powder bed with a gaseous stream comprising a metal oxide precursor and an inert gas, and contacting the powder bed with a gaseous stream of a reagent and an inert gas. The silane layer is formed from a silane compound comprising a first functional group, wherein the first functional group reacts with the metal oxide.
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公开(公告)号：US11028319B2
公开(公告)日：2021-06-08
申请号：US16222424
申请日：2018-12-17
申请人： E Ink Corporation
发明人： Peter Carsten Bailey Widger , Jay William Anseth , Richard J. Paolini, Jr. , Craig Alan Breen , Wesley Viola
摘要： A variable opacity material is provided that may be in the form of a mixture, such as an emulsion that contains a discontinuous aqueous polymeric solution having an LCST of 0 to 100° C. and a continuous phase containing a hydrophobic polymer, such as a polysiloxane. One or more salts, such as lithium bromide and sodium chloride, may be added to the aqueous solution to lower the LCST of the aqueous solution and to raise the refractive index of the aqueous polymeric solution to substantially match the refractive index of the hydrophobic polymer. The variable opacity materials may be applied in the form of a film to various substrates, such as glass.
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公开(公告)号：US10809590B2
公开(公告)日：2020-10-20
申请号：US16008180
申请日：2018-06-14
申请人： E INK CORPORATION
发明人： Peter Carsten Bailey Widger , Jay William Anseth , Richard J. Paolini, Jr. , Mark Benjamin Romanowsky , Jillian Smith , Stephen J. Telfer , Craig Alan Breen , Stephen Bull
IPC分类号： G02B26/00 , G02F1/167 , G09G3/34 , C09B67/08 , G02F1/1676 , G02F1/16757 , B82Y30/00 , G02F1/1675
摘要： A variable transmission film may include an electrophoretic medium having a plurality of capsules and a binder, each capsule containing a plurality of electrically charged particles and a fluid, the charged particles being movable by application of an electric field and being capable of being switched between an open state and a closed state. The film may include at least one of a binder containing fish gelatin and a polyanion; a binder containing one or more tinting agents; capsules containing charge control agents, such as an oligoamine-terminated polyolefin and a branched chain fatty acid comprising at least 8 carbon atoms; a selection of capsules in which at least 60% have a diameter between 50 μm and 90 μm and at least 15% have a diameter between 20 μm and 49 μm; a tinted adhesive layer; and a fluid selected from one or more nonconjugated olefinic hydrocarbons.
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