Samsung Display Co., Ltd.

Samsung Sdi Co., Inc.

Pusan National University

Sam Il Kho

Young Gil Kwon

Nam Choul Yang

Mu Gyeom Kim

Jae Ho Lee

Tae Wook Kang

Kwan Hee Lee

Jae Don Lee

Seong Taek Lee

Chang Woong Chu

Sok Won Noh

Myung Won Song

Sun Hoe Kim

Mu Hyun Kim

Jin Wook Seong

Mi Kyung Kim

Byeong Wook Yoo

Yeun Joo Sung

Jin Kook Lee

A compound for an organic light emitting device is represented by Chemical Formula 1. An organic light emitting device includes a first electrode, a second electrode facing the first electrode and an organic layer between the first electrode and the second electrode, and the organic layer includes a compound represented by Chemical Formula 1. In the above Chemical Formula 1, Ar and L are the same as defined in the specification.

Organic light emitting device

A flat panel display capable of preventing a chipping phenomenon of a pixel definition layer, and a method for making the same are disclosed. The flat panel display includes a thin film transistor formed on a substrate; a planarization layer formed on the thin film transistor; a first electrode layer formed on the planarization layer and electrically connected with the thin film transistor through the via hole formed in the planarization layer; a pixel definition layer formed on the planarization layer and in which an opening for at least partially exposing the first electrode layer is formed; an adhesive reinforcement layer formed at least between the planarization layer and the pixel definition layer on the top of the planarization layer; an emitting layer formed on the first electrode layer; and a second electrode layer formed on the emitting layer and the pixel definition layer. The flat panel display has an improved adhesive property between a pixel definition layer and an planarization layer, which prevents a chipping phenomenon of the pixel definition layer.

Flat panel display and method for making the same

A manufacturing method using an additional heat-treatment process for a donor film with improved surface roughness. The improved donor film, used in a laser induced thermal imaging method, is capable of enhancing the lifetime of products and reducing the defect rates thereof. A manufacturing method for a donor film according to the invention, includes: providing a donor film comprising a base film, a light-to-heat conversion layer and an organic film; heating the donor film to provide a heat-treated donor film; and cooling the heat-treated donor film. The surface roughness of a donor film can be improved, and the non-uniform distribution of a laser on a region subjected to the LITI process can be minimized to prevent the over- or under-transfer of an transferred organic film, etc., and the non-uniform adhesion of the transferred organic film with an acceptor substrate.

Manufacturing method for donor film with improved surface roughness

Growing community of inventors

Yongin-si, South Korea

Sam Il Kho