Samsung Display Co., Ltd.

Jong Hwan Jeon

Baek Kyun Jeon

Suk Hoon Kang

Jin-Soo Jung

Jun Woo Lee

In Ok Kim

Jin Soo Jung

Hoi-Lim Kim

Kang Suk Hoon Kang

An alignment film composition includes a copolymer of a dianhydride-based compound and a diamine-based compound, and a cross-linker. The copolymer has a structure represented by Chemical Formula Ia or Chemical Formula Ib, and the cross-linker is represented by Chemical Formula IIa or Chemical Formula IIb: 

Alignment film composition, liquid crystal display device, and method of manufacturing liquid crystal display device

A manufacturing method of a liquid crystal display, including: applying a photoalignment agent on a substrate; baking the applied photoalignment agent; forming a photoalignment layer by irradiating the baked photoalignment agent with polarized light; baking the photoalignment layer; and removing at least one decomposed unit by cleaning the baked photoalignment layer using a cleaning solution including at least one of propylene glycol monomethyl ether, propylene glycol monomethyl ether acetate, or ethyl lactate.

Liquid crystal display and manufacturing method thereof

An alignment layer composition including a copolymer of a dianhydride compound and a diamine compound, the copolymer including a repeating unit represented by chemical formula (1); and a repeating unit represented by chemical formula (2): wherein Ris a tetravalent organic group derived from an alicyclic dianhydride or an aromatic dianhydride, and wherein Rincludes a phenyl ester group.

Alignment layer composition, liquid crystal display including the same, and method of manufacturing the liquid crystal display

A liquid crystal display device is provided. An exemplary embodiment of the present invention provides a liquid crystal display device including: a first substrate; a thin film transistor disposed on the first substrate; a first electrode connected to the thin film transistor; and a first alignment layer disposed on the first electrode. The first alignment layer includes: a copolymer formed from at least one compound of cyclobutane dianhydride (CBDA) and a cyclobutane dianhydride derivative, and a first diaminean including alkylene group (&#x2014;CH, k being a natural number); and a cross-linking agent including an alkylene group (&#x2014;CH, n being a natural number), wherein the copolymer includes polyimide.

Photoalignment agent, photoalignment layer, liquid crystal display device, and method of manufacturing the same

A photoalignment agent includes: a copolymer obtained from at least one of cyclobutane dianhydride (CBDA) and a cyclobutane dianhydride derivative, and a diamine; and a cross-linking agent including an alkylene group &#x2014;CH&#x2014;, n being a natural number.

Photoalignment agent, photoalignment film, liquid crystal display device, and method of manufacturing the same

Among data voltages applied to a plurality of pixels on a display panel, a first data voltage is shifted from a first original data voltage by a first value, a second data voltage is shifted from a second original data voltage by a second value, and a third data voltage is shifted from a third original data voltage by a third value to compensate for AC and DC afterimages. A common voltage generator provides an optimal common voltage for the third data voltage when the temperature of the liquid crystal panel assembly is lower than a reference temperature and provides an optimal common voltage for the first data voltage or the second data voltage when the temperature of the liquid crystal panel assembly is higher than or equal to the reference temperature. The first, second, and third values correspond to respective kickback voltages of the respective gray level data voltages.

Liquid crystal display and driving method thereof

A liquid crystal display is provided. A photo-alignment layer thereof includes a polyimide and a crosslinker including an alkylene group (&#x2014;CH&#x2014;, where n is a natural number) and a plurality of crosslinking end groups, wherein the plurality of crosslinking end groups include at least two types of end groups or end group derivatives, each type having a different available functional group.

Photo-alignment layer and liquid crystal display including the same

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.

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

A liquid crystal display including a first substrate, a thin film transistor disposed on the first substrate, a first electrode connected to the thin film transistor, and a first alignment layer disposed on the first electrode, wherein the first alignment layer includes polyimide and a capping group connected to a main chain end of the polyimide, and the capping group contains at least one of a first compound represented by the following Chemical Formula 1, and a second compound represented by the following Chemical Formula 2:  A1 and A2 are, independently of each other, an aromatic compound having 4 to 20 carbon atoms or an aliphatic cyclic compound having 4 to 20 carbon atoms; and B1 and B2 are, independently of each other, a crosslinking reaction group containing an alkylene group (&#x2014;CH&#x2014;, n is a natural number).

Photo-alignment layer and liquid crystal display

A photoalignment agent includes a polyimide and a capping terminal connected to a main chain end terminal of the polyimide. The capping terminal includes an alkylene group (&#x2014;CH&#x2014;, m is a natural number) and a core stereo unit in a dendrimer format. A liquid crystal display includes a first substrate, a thin film transistor disposed on the first substrate, a first electrode connected to the thin film transistor, and a first alignment layer disposed on the first electrode. The first alignment layer includes a polyimide and a capping terminal connected to a main chain end terminal of the polyimide. The capping terminal includes an alkylene group (&#x2014;CmH2m-, m is a natural number) and a core stereo unit in a dendrimer format.

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Gwangju-si, South Korea

Jong Hwan Jeon