Lg Chem, Ltd

Kakao Corporation

Lg Display Co., Ltd.

Hye Won Jeong

Kyungjun Kim

Bora Shin

Chan Hyo Park

Cheolmin Yun

Heon Kim

Sung Joon Oh

Jinho Lee

Min Young Lim

Keon Woo Lee

Sung Ho Chun

Kyung Jun Kim

Kyoung Hoon Kim

Jung Ho Jo

Hee Young Lee

Moon Soo Park

Dong Hyun Oh

Sung Joon Min

Kyoung Ho Ahn

Sang Jun Park

Sung-Ho Chun

Hangah Park

Kyung-Jun Kim

Byung Hyun Lee

Bo Ra Shin

Seung Yup Lee

Ji Eun Myung

MiRa Im

Su Hyeok Cha

Hee Jin Lim

Yang Kyun Park

Won Jae Lee

Bo Kyung Kim

Jee Min Yang

Ji Sun Park

Hui Hyeon Kim

Ji Hyun Son

Tae Heon Lee

Gi Hyouk Lee

Won Bom Hong

Yong Goo Son

Sang Woo Kim

Jun Won Chang

Jinyoung Park

Kyunghwan Kim

Min Jeong Yang

Ah Seong Kim

So Yeon Kim

Jungho Jo

Ji Yeong Kim

Yeon Keun Lee

Kyoung Won Lee

Ji Hee Kim

Jung Hyoung Lee

Yong Nam Kim

Hang Ah Park

Sang Jun Lee

Kichul Koo

Chang Yoon Lim

Danbi Choi

Hye Ran Seong

Se Jin Shin

Ye Ji Hong

Mi Ra Im

Yeda Eun Kim

Chanhyo Park

Yu Na Kim

Hyeran Seong

Sejin Shin

Provided is a content recommendation method. The content recommendation method includes: receiving, by a user terminal, text information from a user through a text input window of a chatting room, outputting, by the user terminal, a first content set including at least a part of contents related to keyword information to be mapped to the text information, outputting, by the user terminal, a first preview content for a first content included in the first content set, receiving, by the user terminal, an interaction from the user, and in response to the interaction, outputting, by the user terminal, a second preview content for a second content to replace the first preview content, wherein the second content is a content related to the keyword information.

Content recommendation method and user terminal

Provided are a method and server for providing a content list. The method and server for providing a content list includes: providing source content to a chat room, receiving a request for providing a content list related to the source content from a first terminal of a first member; providing at least one of a first content list including at least one keyword-related content selected from among the entire contents stored in the server based on a keyword of the source content and a second content list including at least one group-related content belonging to the same group as a group of the source content among the entire contents, receiving information on selection content selected by the first member among the contents included in the at least one content list, from the first terminal, and providing the selection content to the chat room.

Method and server for providing content list and operating method of user terminal

Provided according to the present invention is a substrate for a flexible display device in which the problems of threshold voltage shift-induced current fluctuation and resultant image sticking can be solved by introducing an imide monomer as an organic filler into a polyamic acid composition to enhance thickness and surface direction densities in the film that is manufactured while vulcanization is performed at high temperatures, thereby enhancing thermal diffusivity and thermal conductivity of the film.

Polyimide film having improved thermal conductivity and manufacturing method therefor

A polyimide film according to the present invention can be effectively used as a substrate for a flexible display device without a deterioration in heat resistance even at a temperature of 350&#xb0; C. or higher since a coefficient of thermal expansion (A) in the section of 100-350&#xb0; C., of the polyimide film, and a coefficient of thermal expansion (B) in the section of 350-450&#xb0; C., of the polyimide film, meet 0&#x3c;B/A&#x3c;2.

Polyimide film for flexible display device substrate

Described is a polyimide prepared from a diamine containing a spiro or cardo group in a molecule structure, wherein the dimensional stability of the polyimide can be improved at a high temperature, and thus the polyimide can provide a polyimide film useful for a flexible substrate.

Polyimide and polyimide film, prepared therefrom, for flexible display

The present invention provides a polyimide film forming composition which comprises a polyamic acid or a polyimide in an oligomer form or in a low-molecular weight form, the polyamic acid or the polyimide being prepared from a diamine containing an intramolecular imide group, and thus can provide a polyimide film having improved heat resistance while retaining optical properties thereof. In addition, the polyimide film according to the present invention can reduce not only a laser energy density (E/D) required in the laser exfoliation process but also remarkably decrease an amount of ash generated by an exfoliation process, thereby further improving the reliability of a device in a display manufacturing process.

Polyimide film forming composition and polyimide film produced by using same

The present invention relates to a laminated film roll body, around which a laminated film is wound, the laminated film including: a first polyimide film; and a second polyimide film laminated on the first polyimide film and made of a fluorine-based, siloxane-based, or amine-based polyamic acid, wherein the second polyimide film has a glass transition temperature of 350&#xb0; C. or higher when measured by a temperature elevation rate of 20&#xb0; C./min. The laminated film roll body can be used in a continuous manufacturing process of a flexible device to improve process yield and efficiency.

Polyimide laminated film roll body and method for manufacturing same

The laminate for manufacturing a flexible substrate according to the present invention is formed by using a polyimide having a high absorbance to a UV laser in an organic sacrificial layer for delaminating a flexible substrate from a carrier substrate. Therefore, it is possible that the laser energy density required in the delaminating process using laser irradiation is reduced and the amount of as generated by the delaminating process is remarkably reduced so that the efficiency of the process, the permeability of the flexible substrate is improved and the reliability of the device is improved.

Laminate for manufacturing flexible substrate and method for manufacturing flexible substrate by using same

A method for producing a device substrate by obtaining a laminate comprising a carrier substrate with a first polyimide film disposed on at least one surface of the carrier substrate, a second polyimide film disposed on the first polyimide film, applying a physical stimulus to the second polyimide film without causing chemical changes in the first polyimide film such that the adhesive strength of the first polyimide to the second polyimide film decreases and separating the second polyimide film from the first polyimide film formed on the carrier substrate to obtain the device.

Laminate, and element comprising substrate manufactured using same

The present invention relates to a polyimide-based solution that can be used to produce an isotropic transparent polyimide-based film with high heat resistance and excellent mechanical properties as well as high transmittance. A coating of the polyimide-based solution on a substrate has a haze of 1% or less after storage at a temperature of 30&#xb0; C. and a humidity of 70% for 30 minutes.

Polyimide-based solution and polyimide-based film produced using same

Disclosed is a polyimide precursor composition for the production of a flexible board of a photoelectronic device. The polyimide precursor composition includes a polyimide precursor derived from a diamine or acid dianhydride including a structure of Formula 1: 

Composition for the production of polyimide film for flexible board of photoelectronic device

The present invention relates to a method for producing a flexible substrate. According to the method of the present invention, a flexible substrate layer can be easily separated from a carrier substrate even without the need for laser or light irradiation so that a device can be prevented from deterioration of reliability and occurrence of defects caused by laser or light irradiation. In addition, according to the method of the present invention, a flexible substrate can be continuously produced in an easier manner based on a roll-to-roll process.

Method for fabricating flexible substrate

The present invention relates to a method for producing a metal wire embedded flexible substrate from a laminate structure. The laminate structure includes a carrier substrate, a debonding layer disposed on at least one surface of the carrier substrate and including a polyimide resin, a metal wiring layer disposed in contact with the debonding layer, and a flexible substrate layer disposed in contact with the metal wiring layer. The adhesion strength between the metal wiring layer and the flexible substrate layer is greater than that between the metal wiring layer and the debonding layer. According to the method of the present invention, the flexible substrate with the metal wiring layer can be easily separated from the carrier substrate even without the need for other processes, such as laser and light irradiation. The embedding of the metal wires in the flexible substrate layer decreases the sheet resistance of an electrode and can protect the metal wires from damage or disconnection even when the flexible substrate is deformed in shape.

Laminated body comprising metal wire layer, and manufacturing method therefor

The present invention relates to a laminate and a device fabricated using the laminate. The laminate includes a debonding layer including a polyimide resin between a carrier substrate and a flexible substrate. The adhesive strength of the debonding layer to the flexible substrate is changed by a physical stimulus. According to the present invention, the flexible substrate can be easily separated from the carrier substrate without the need for further processing such as laser or light irradiation. Therefore, the use of the laminate facilitates the fabrication of the device having the flexible substrate. The device may be, for example, a flexible display device. In addition, the device can be prevented from deterioration of reliability and occurrence of defects caused by laser or light irradiation. This ensures improved characteristics and high reliability of the device.

Laminite, and element comprising substrate manufactured using same

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Daejeon, South Korea

Hye Won Jeong