Lg Innotek Co., Ltd.

Eui Yeol Yang

Sung Hoon Kim

Jin Gyeong Park

In Jae Lee

Se Woong Na

Won Jin Kim

Ju Yeon Won

Do Hyuk Yoo

A printed circuit board according to an embodiment includes a first insulating layer; a first circuit pattern disposed on a lower surface or inside the first insulating layer; a second circuit pattern disposed on an upper surface of the first insulating layer; a second insulating layer disposed on the upper surface of the first insulating layer and surrounding the second circuit pattern; and a protective layer disposed on an upper surface of the second insulating layer, wherein the second insulating layer has at least one recess formed on its upper surface, and wherein the protective layer is disposed in the recess formed on the upper surface of the second insulating layer.

Printed circuit board

Provided are a ternary glass composition containing SiO, BOand ZnO, and a ceramic phosphor plate including a glass frit obtained by vitrification of the glass composition as a matrix and obtained by sintering at least one phosphor.

Glass composition for photo-conversion member and ceramic photo-conversion member using the same

Growing community of inventors

Seoul, South Korea

Eui Yeol Yang