Abstract: A persimmon leaf-derived polysaccharide fraction consisting of 60-80 wt % of neutral sugar and 18-39 wt % of uronic acid, and 0.5-10 wt % of 3-deoxy-D-manno-2-octulosonic acid (KDO) analogs, the wt % based on the total weight of the polysaccharide fraction.

Abstract: The present invention relates to novel polyamic acid; a photosensitive resin composition satisfying excellent flexibility and low stiffness and exhibiting excellent heat resistance and plating resistance; a dry film obtained from the photosensitive resin composition; and a circuit board including the dry film.

Abstract: Disclosed is a negative C-type retardation compensator for a liquid crystal display. The negative C-type retardation compensator for the liquid crystal display includes polyarlate having a thio group or a sulfur oxide group in a polymer main chain thereof. Accordingly, the retardation compensator has an absolute value of negative retardation that is larger in a thickness direction that a retardation compensator which includes polyarylate having no thio group or sulfur oxide group in a polymer main chain thereof even though the retardation compensator having the thio group or sulfur oxide group and the retardation compensator having no thio group or sulfur oxide group are the same as each other in thickness. Thereby, the negative C-type retardation compensator for liquid crystal displays is capable of being desirably applied to the liquid crystal displays.

Abstract: Provided is an image forming system operable to provide a cloud printing service, the image forming system comprising: a transmitting device operable to transmit content by designating a target phone number; a cloud printing server operable to receive the target phone number and the content from the transmitting device; a receiving device assigned with the target phone number and operable to receive an upload notification of the content with respect to the target phone number from the cloud printing server; and an image forming device operable to print the content by receiving the content from the cloud printing server, wherein the cloud printing server transmits the content to the image forming device registered in the target phone number when the cloud printing service is requested for the content to the target phone number.

Abstract: A hub bearing may include a hub provided with a disc-shaped wheel coupling portion which is coupled to a wheel and a bearing mounting portion which passes through and protrudes from the wheel coupling portion, first face splines being formed on a protruding surface; and a bearing formed with a lower end fixed to the bearing mounting portion such that one side of the lower end comes into contact with the wheel coupling portion and an upper end fixed to a vehicle body, second face splines being formed on one surface of the lower end.

Abstract: A printing control apparatus includes a user interface configured to receive a selection of a printing option to be applied to a document, and to display, in response to a favorite printing option being the selection of the printing option, information about a method for a preselected printing option, a printer driver configured to establish the printing option to be applied to the document according to the information about the method, and to generate printing data according to the printing option, and a communication interface configured to transmit the printing data to an image forming apparatus.

Abstract: The present invention relates to a novel polyamic acid introduced with an imidazolyl group in the polymer chain, a photosensitive resin composition including the polyamic acid and that is capable of providing a photosensitive material that satisfies the characteristics of an excellent bending property and low stiffness and also exhibits excellent heat resistance and coating resistance, a dry film obtained from the photosensitive resin composition, and a circuit board including the dry film.

Abstract: The present invention provides a composite material comprising a glass cloth; and an organic-inorganic hybrid composition comprising diphenylsilanediol and alkoxy silane, a composite film manufactured by using the same, and a method for manufacturing the composite film.

Abstract: An apparatus for driving a display panel includes: a time variant signal (TVS) generator configured to generate a time variant signal group; a common pulse signal generator configured to generate a plurality of pulse signals; a selector configured to receive the time variant signal, the plurality of the pulse signals, and video data and select a grayscale voltage corresponding to the video data; and a buffer configured to buffer and transfer an output of the selector. Herein, the selector and the buffer are provided to each of a plurality of channels, and the time variant signal and the plurality of the pulse signals are inputted in common to the selector of each channel.

Abstract: The present invention relates to novel polyamic acid; a photosensitive resin composition satisfying excellent flexibility and low stiffness and exhibiting excellent heat resistance and plating resistance; a dry film obtained from the photosensitive resin composition; and a circuit board including the dry film.

Abstract: Disclosed is a negative C-type retardation compensator for a liquid crystal display. The negative C-type retardation compensator for the liquid crystal display includes polyarlate having a thio group or a sulfur oxide group in a polymer main chain thereof Accordingly, the retardation compensator has an absolute value of negative retardation that is larger in a thickness direction that a retardation compensator which includes polyarylate having no thio group or sulfur oxide group in a polymer main chain thereof even though the retardation compensator having the thio group or sulfur oxide group and the retardation compensator having no thio group or sulfur oxide group are the same as each other in thickness. Thereby, the negative C-type retardation compensator for liquid crystal displays is capable of being desirably applied to the liquid crystal displays.

Abstract: Disclosed is a negative C-type retardation compensator for a liquid crystal display. The negative C-type retardation compensator for the liquid crystal display includes polyarylate having a thio group or a sulfur oxide group in a polymer main chain thereof. Accordingly, the retardation compensator has an absolute value of negative retardation that is larger in a thickness direction than a retardation compensator which includes polyarylate having no thio group or sulfur oxide group in a polymer main chain thereof even though the retardation compensator having the thio group or sulfur oxide group and the retardation compensator having no thio group or sulfur oxide group are the same as each other in thickness. Thereby, the negative C-type retardation compensator for liquid crystal displays is capable of being desirably applied to the liquid crystal displays.

Abstract: The present invention provides a composite material comprising a glass cloth; and an organic-inorganic hybrid composition comprising diphenylsilanediol and alkoxy si lane, a composite film manufactured by using the same, and a method for manufacturing the composite film.

Abstract: Disclosed is an organic electroluminescent device including a substrate, a first and a second electrode, and an emitting layer formed between the first electrode and the second electrode. The emitting layer includes a plurality of materials which is a blue emitting material using a following chemical formula as dopant. In this case, at least one of A1 and A2 is selected from a substituted or non-substituted aromatic group, a heterocyclic group, an aliphatic group, and hydrogen.

Abstract: The present invention relates to a photosensitive resin composition which is developable with an alkaline aqueous solution and does not need a high temperature for curing and the like, and has all the properties suitable for use in a cover film of a printed circuit board or a laminated body for a semiconductor, and a dry film comprising the same. The photosensitive resin composition comprises (A) a polyamic acid comprising a polymer of at least one diamine compound and at least one acid dianhydride; (B) a photopolymerizable compound having at least one polymerizable ethylenic unsaturated bond in its molecule; and (C) a photoinitiator.

Abstract: The present invention provides a photosensitive resin composition comprising: a polyamic acid including a specific repeating unit; a heterocyclic amine compound; a (metha)acrylate-based compound including one or more double bonds between carbons; a photoinitiator; and an organic solvent, and a dry film prepared therefrom. The photosensitive resin composition can be cured at a low temperature to offer process safety and work convenience, and has excellent bending resistance, soldering heat resistance, and a property of filling the pattern, as well as excellent heat resistance and mechanical properties.

Abstract: The present invention relates to a polyarylate prepared by a method comprising a step of copolymerizing divalent phenol, divalent aromatic carboxylic acid halide and the allyl bisphenol derivative. The polyarylate according to the invention is a novel polyarylate in which various functional groups can be introduced to the main chain of the polymer as well as the terminal of a polymer, and the concentration thereof can be adjusted. These functional groups allow improvement in the adhesion force by chemically bonding with the substrate or protective layer when coated, thus the polyarylate is suitably used for a film or a coating composition.

Abstract: The present invention relates to a polyamic acid or polyimide comprising a heat-polymerizable or photo-polymerizable functional group, a photosensitive resin composition comprising the polyamic acid or the polyimide, a photosensitive resin composition being capable of providing a cured film that can be used for patterning at a high resolution and that has an excellent developing property in an alkaline aqueous solution, flexibility, adhesion strength, resistance to welding heat, and pressure cooker test (PCT) resistance, and a dry film prepared from the composition.

Abstract: The present invention relates to a photosensitive resin composition which is developable with an alkaline aqueous solution and does not need a high temperature for curing and the like, and has all the properties suitable for use in a cover film of a printed circuit board or a laminated body for a semiconductor, and a dry film comprising the same. The photosensitive resin composition comprises (A) a polyamic acid comprising a polymer of at least one diamine compound and at least one acid dianhydride; (B) a photopolymerizable compound having at least one polymerizable ethylenic unsaturated bond in its molecule; and (C) a photoinitiator.

Abstract: The present invention relates to a composition for forming a gate insulating layer of an organic thin film transistor comprising polyarylate, and an organic thin film transistor comprising a gate insulating layer, which is formed using the composition, in contact with an organic semiconductor channel.