Samsung Electronics Co., Ltd.

Yong Young Park

Myung Sup Jung

Sung Kyung Jung

Sung Hen Cho

Jin Gyu Choi

Young Mok Son

Han Sol Cho

Jin Taek Hwang

Bong Kyu Kim

Bong Seok Moon

Sang Yoon Yang

A method for treating a polymeric optical element which includes the steps of mounting a polymeric optical element into a chamber, injecting a compressed gas as an annealing medium into the chamber and annealing the polymeric optical element and removing the annealing medium from the chamber. The present method provides a new way of preventing disadvantageous molecular orientation and residual stress which causes a deterioration in the optical properties of the polymeric optical element.

Enhancement of optical and mechanical properties in a polymeric optical element by annealing under a compressed gas

A soluble polyimide for a photosensitive polyimide precursor and a photosensitive polyimide precursor composition including the soluble polyimide, wherein the soluble polyimide contains hydroxyl and acetyl moieties and at least one reactive end-cap group at one or both ends of the polymer chain. The photosensitive polyimide precursor composition comprises the soluble polyimide, a polyamic acid containing at least one reactive end-cap group at one or both ends of the polymer chain, a photo acid generator (PAG) and optionally a dissolution inhibitor. Since the polyimide film of the present invention exhibits excellent thermal, electric and mechanical properties, it can be used as insulating films or protective films for various electronic devices. A pattern with a high resolution may be formed even on the polyamide film having a thickness of above 10 &#x3bc;m.

Soluble polyimide for photosensitive polyimide precursor and photosensitive polyimide precursor composition comprising the soluble polyimide

Positive-type photosensitive polyimide precursor and composition comprising the same

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Daejun-Shi, South Korea

Yong Young Park