Samsung Electronics Co., Ltd.

Ki-Duk Jang

Young-Ki Kim

Chang-Youn Hwang

Shin-Chul Kang

Jong-Seok Park

Yong-Wook Hwao

Provided is a dual-axis rotation folder-type mobile communication terminal including a main body, a folder rotatable about a first hinge axis having two positions respectively in a latitudinal direction and a longitudinal direction of the main body to open and close a top face of the main body, and a rotation hinge unit rotatable about a second hinge axis a predetermined degree to change a position of the first axis.

Dual-axis rotation folder-type mobile communication terminal and hinge device thereof

An optical waveguide sheet that has an auxiliary layer for preventing light transmitted through the waveguide sheet from leaking or being lost and a manufacturing method thereof. The waveguide sheet transmits light from a light emitting element thereinto, and has a reflecting pattern for reflecting light forward. At least one auxiliary layer for providing a total reflection condition for preventing the light from leaking or being lost when the light is transmitted into the waveguide sheet is coated on the waveguide sheet.

Growing community of inventors

Suwon-si, South Korea

Ki-Duk Jang