Branched polyol additives for electrophoretic media
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G02B-005/23
C07C-069/34
C07C-069/33
G02F-001/167
G09G-003/34
G02B-026/00
출원번호
US-0403370
(2017-01-11)
등록번호
US-9765015
(2017-09-19)
발명자
/ 주소
Shao, Lin
Gu, Haiyan
Sofiyev, Vladimir
Wang, Ming
출원인 / 주소
E INK CALIFORNIA, LLC
대리인 / 주소
Bean, Brian D.
인용정보
피인용 횟수 :
0인용 특허 :
29
초록▼
Additives for electrophoretic media comprising esters of branched polyols and fatty acids, such as esters of pentaerythritol propoxylate (5/4 PO/OH) and stearic acid. The fatty acids may be saturated or unsaturated, branched or unbranched. In some embodiments, the fatty acids are perfluorinated, or
Additives for electrophoretic media comprising esters of branched polyols and fatty acids, such as esters of pentaerythritol propoxylate (5/4 PO/OH) and stearic acid. The fatty acids may be saturated or unsaturated, branched or unbranched. In some embodiments, the fatty acids are perfluorinated, or partially fluorinated. In some embodiments, the branched polyol will include oligomers of polypropylene oxide or polyethylene oxide. When the additives are included in an electrophoretic medium in a display, the resulting display has an improved contrast ratio and reducing ghosting.
대표청구항▼
1. An electrophoretic medium comprising: (a) a non-polar fluid;(b) a plurality of first charged particles dispersed in the non-polar fluid; and(c) an additive of Formula I wherein R1, R2, R3, and R4 are independently selected from the group consisting of —OH, —(CH2)mOH, —(OCH2CH2)nOH, —(OCH2CHCH3)qO
1. An electrophoretic medium comprising: (a) a non-polar fluid;(b) a plurality of first charged particles dispersed in the non-polar fluid; and(c) an additive of Formula I wherein R1, R2, R3, and R4 are independently selected from the group consisting of —OH, —(CH2)mOH, —(OCH2CH2)nOH, —(OCH2CHCH3)qOH, —OCOR5, —(CH2)rOCOR5, —(OCH2CH2)tOCOR5, and —(OCH2CHCH3)uOCOR5, wherein each R5 is independently a C5-C28 branched or unbranched fluoroalkane, and m, n, q, r, t, and u are independently integers from 1 to 30, andwherein at least one of R1, R2, R3, or R4 is —OCOR5, —(CH2)rOCOR5, —(OCH2CH2)tOCOR5, or —(OCH2CHCH3)uOCOR5. 2. The electrophoretic medium of claim 1, wherein R5 is a C10-C20 unbranched fluoroalkane. 3. The electrophoretic medium of claim 1, wherein R5 is C17F35. 4. The electrophoretic medium of claim 1, R1, R2, and R3 are —OH, R4 is —OCOR5, and R5 is a C5-C28 branched or unbranched fluoroalkane. 5. The electrophoretic medium of claim 4, wherein R5 is C17F35. 6. The electrophoretic medium of claim 1, further comprising a plurality of second charged particles dispersed in the non-polar fluid, wherein the first and second charged particles have opposite charges. 7. The electrophoretic medium of claim 1, further comprising an ionic surfactant. 8. The electrophoretic medium of claim 7, wherein the ionic surfactant comprises a quaternary amine. 9. An encapsulated electrophoretic medium comprising the electrophoretic medium of claim 1. 10. The encapsulated electrophoretic medium of claim 9, wherein the electrophoretic medium is encapsulated in a microcell or a protein coacervate. 11. The encapsulated electrophoretic medium of claim 10, wherein the protein coacervate comprises gelatin. 12. The electrophoretic medium of claim 1, wherein the electrophoretic medium is dispersed in a polymer. 13. The electrophoretic medium of claim 1, wherein the first charged particles comprise titania, carbon black, or copper chromite. 14. The electrophoretic medium of claim 1, wherein a ratio of additive to first charged particles is greater than 1:500. 15. The electrophoretic medium of claim 1, wherein the conductivity of the electrophoretic medium is less than 300 pS/m. 16. The electrophoretic medium of claim 1, further comprising a plurality of second charged particles and a plurality of third charged particles dispersed in the nonpolar fluid, wherein the first, the second, or the third charged particles are red, green, blue, cyan, yellow, or magenta. 17. The electrophoretic medium of claim 1, wherein the non-polar fluid comprises C6-C18 branched alkanes. 18. The electrophoretic medium of claim 1, wherein the non-polar fluid comprises C7-C10 branched alkanes. 19. An additive of Formula II: wherein R5 is a C5-C28 branched or unbranched alkane or fluoroalkane. 20. The additive of claim 19, wherein R5 is a C10-C20 unbranched alkane or fluoroalkane. 21. The additive of claim 19, wherein R5 is C17H35 or C17F35. 22. The additive of claim 19, wherein R5 is a stearate. 23. An additive of Formula III: wherein R5 and R6 are independently C5-C28 branched or unbranched alkanes or fluoroalkanes. 24. The additive of claim 23, wherein R5 or R6 is a C10-C20 unbranched alkane of fluoroalkane. 25. The additive of claim 23, wherein R5 or R6 is C17H35 or C17F35. 26. The additive of claim 23, wherein R5 or R6 is a stearate.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (29)
Wang, Ming; Li, Yu; Du, Hui; Wang, Xiaojia; Gu, Haiyan; Ivanov, Roman; Sprague, Robert, Additive for improving optical performance of an electrophoretic display.
Denda, Atsushi; Terada, Masaru; Takiguchi, Hiroshi; Ogawa, Tomohiro; Toyoda, Naoyuki, Base metal pigment, aqueous base metal pigment dispersion liquid, and aqueous ink composition.
Crain, John M.; Lettow, John S.; Aksay, Ilhan A.; Prud'Homme, Robert K.; Korkut, Sibel, Coatings containing functionalized graphene sheets and articles coated therewith.
LeCain,Richard D.; Knaian,Ara N.; O'Neil,Steven J.; Duthaler,Gregg M.; Danner,Guy M.; Zehner,Robert W.; Goenaga,Alberto; Davis,Benjamin Max; Chan,Randolph W.; Albert,Jonathan D.; Crossley,Glen, Components and methods for use in electro-optic displays.
Liang, Rong-Chang; Tseng, Scott C-J; Wu, Zarng-Arh George; Zang, HongMei; Chuang, Hsiao-Ken, Electrophoretic display and novel process for its manufacture.
Paolini, Jr.,Richard J.; Miller,David; Comiskey,Barrett; Jacobson,Joseph M.; Wu,Bin; Honeyman,Charles Howie; Lin,Jian, Electrophoretic medium and process for the production thereof.
de Winter Walter F. (\s-Gravenwezel BEX) Uytterhoeven Herman J. (Bonheiden BEX) Gilliams Yvan K. (Hever BEX) De Volder Nol J. (Edegem BEX), Liquid electrophoretic developer.
Webber,Richard M.; Whitesides,Thomas H.; Danner,Guy M.; Herb,Craig A.; Honeyman,Charles H.; McCreary,Michael, Processes for the production of electrophoretic displays.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.