Liquid crystal photo-alignment agent, liquid crystal photo-alignment film manufactured using the same, method of manufacturing the same, and liquid crystal display including liquid crystal photo-alignment film
AssigneeSamsung Display Co., Ltd.
InventorsSuk Hoon Kang, Jin-Soo Jung, Jun Woo Lee, Jong Hwan Jeon, In Ok Kim, Baek Kyun Jeon
A liquid crystal photo-alignment agent includes a polyimide copolymer including a first structure unit represented by the described Chemical Formula 1 and a second structure unit represented by the described Chemical Formula 2, and, based on a 100 mole % sum total of the first structure unit and the second structure unit, the first structure unit is included in an amount of 70 to 95 mole % and the second structure unit is included in an amount of 5 to 30 mole %. A liquid crystal photo-alignment film may be manufactured using the same, and a liquid crystal display may include the liquid crystal photo-alignment film.
Drawings
Claims9
A liquid crystal photo-alignment agent, comprising:
a polyimide copolymer comprising a first structure unit represented by Chemical Formula 1 and a second structure unit represented by Chemical Formula 2,
wherein the first structure unit comprises 80 to 90 mole % and the second structure unit comprises 10 to 20 mole %, based on 100 mole % sum total of the first structure unit and the second structure unit,
wherein in Chemical Formulas 1 and 2:
X1 is a tetravalent organic group selected from Chemical Formula 1A,
X2 is a tetravalent organic group of Chemical Formula 2A, and
Y1 and Y2 are divalent organic groups induced from aromatic diamine,
wherein in Chemical Formula 1A:
R6 and R7 are each independently selected from hydrogen, a halogen, a substituted or unsubstituted C1 to C20 alkyl group, and a combination thereof,
a is an integer of 0 to 2,
b is an integer of 0 to 3, and
where b is 2 or more, each R7 of a plurality of R7s is the same or different from the others and each R7 of a plurality of R7s is connected to the others to form a fused ring fused with a cyclohexyl group, and
wherein in Chemical Formula 2A:
R11 and R12 are each independently selected from hydrogen, a halogen, a substituted or unsubstituted C1 to C20 alkyl group, and a combination thereof, and
wherein the polyimide copolymer has a weight average molecular weight of 10,000 to 300,000 g/mol.
15 Jan 2036Estimated · howhide20 years from earliest known nonprovisional domestic filing plus recorded patent term adjustment. Maintenance-fee lapses, terminal disclaimers and statutory extensions have not been checked. The continuity chain may be incomplete; this is not an enforceability determination.
By treatment of the surface, e.g. embossing, rubbing or light irradiation: by light irradiation, e.g. linearly polarised light photo-polymerisation
Life of this patent
About 9 years 3 months of term left · ends 15 Jan 2036 (estimated)
Priority, Korea11 Feb 2015
Filed15 Jan 2016
Granted7 Nov 2017
Today12 Oct 2026
Term ends15 Jan 2036
Priority, Korea11 Feb 2015
Granted7 Nov 2017
Term ends15 Jan 2036
Priority claimedKR 10-2015-0020919
Application filedUS 14/996,960
Assigned to Samsung Display Co., Ltd.assignment of assignor's interest
PublishedUS 2016/0230095 A1
GrantedUS 9,809,751 B2
TodayWithin its term
Term endsEstimated
Description6,245 words
Summary1,145 words
#This application claims priority from and the benefit of Korean Patent Application No. 10-2015-0020919, filed on Feb. 11, 2015, which is hereby incorporated by reference for all purposes as if fully set forth herein.
#Exemplary embodiments relate to a liquid crystal photo-alignment agent, a liquid crystal photo-alignment film manufactured using the same, a method of manufacturing the same, and a liquid crystal display including the liquid crystal photo-alignment film.
Brief description of the drawings1 figure
#The accompanying drawings, which are included to provide a further understanding of the inventive concept, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the inventive concept, and, together with the description, serve to explain principles of the inventive concept.
#FIG. 1 is a schematic cross-sectional view of a liquid crystal display including a liquid crystal photo-alignment film according to an exemplary embodiment.
Detailed description5,031 words
#In the following description, for the purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of various exemplary embodiments. It is apparent, however, that various exemplary embodiments may be practiced without these specific details or with one or more equivalent arrangements. In other instances, well-known structures and devices are shown in block diagram form in order to avoid unnecessarily obscuring various exemplary embodiments.
#In the accompanying figures, the size and relative sizes of layers, films, panels, regions, etc., may be exaggerated for clarity and descriptive purposes. Also, like reference numerals denote like elements.
#When an element or layer is referred to as being “on,” “connected to,” or “coupled to” another element or layer, it may be directly on, connected to, or coupled to the other element or layer or intervening elements or layers may be present. When, however, an element or layer is referred to as being “directly on,” “directly connected to,” or “directly coupled to” another element or layer, there are no intervening elements or layers present. For the purposes of this disclosure, “at least one of X, Y, and Z” and “at least one selected from the group consisting of X, Y, and Z” may be construed as X only, Y only, Z only, or any combination of two or more of X, Y, and Z, such as, for instance, XYZ, XYY, YZ, and ZZ. Like numbers refer to like elements throughout. As used herein, the term “and/or” includes any and all combinations of one or more of the associated listed items.