Hansung Elcomtec Co., Ltd.

Samsung Sdi Co., Inc.

Samsung Mobile Display Co., Ltd.

Ho Seok Ko

Sang Hoon Lee

Wan Soo Han

Dong Ho Lee

Young Woo Lee

Won Ki Cho

Hee Chan Eum

Jong Kyo Jeong

A light guide member for guiding light received from a light source, the light source illuminating light toward the light guide member, the light guide member may include a plurality of first grooves on a first side of the light guide member, the first grooves extending along a first direction crossing a zero-degree radiation angle of the light from the light source, wherein an angle of a reflective face of the first groove increases approaching away from the light source of the light source.

Backlight unit of a liquid crystal display device

A light guide member for guiding light received from a light source unit, the light source unit illuminating light toward the light guide member, the light guide member may include a plurality of first grooves on a first side of the light guide member, the first grooves extending along a first direction, and a plurality of first projections projecting from surfaces of the first grooves.

Light guide member and backlight unit including light guide member and methods of fabricating light guide members and backlight units

The present invention discloses to a keypad with an EL device for a backlight united with a keypad rubber and a method for fabricating the same for improving a click sensitivity and visibility of keys and preventing a wrong operation of the keys by using a silicon injection process. The method for fabricating a keypad used in a portable terminal, comprises the steps of: fabricating a light-emitting device for a backlight; printing an adhesive on a front side and a back side of the light-emitting device; performing an injection process to form a silicon layer, the silicon layer united with the light-emitting device through the adhesive; cutting the light-emitting device united with the silicon layer in a regular shape suitable to the portable terminal; and attaching keys to portions of the silicon layer corresponding to a light-emitting portion of the front side in the light-emitting device.

Keypad with EL united in keypad rubber and method for fabricating the same

An ElectroLuminescent (EL) device includes a transparent electrode layer, a luminescent layer, and insulation layer, a rear electrode layer, a first protection layer adapted to cover the luminescent layer and the insulation layer and the rear electrode layer, and an electrode layer for noise reduction sequentially arranged on an insulated substrate; and a second protection layer adapted to cover the electrode layer for noise reduction.

Growing community of inventors

Suwon-si, South Korea

Ho Seok Ko