Lg Display Co., Ltd.

Sun-Man Kim

Jae-Hyun Park

Eun-Hee Choi

Jae-Jung Han

Gi-Bin Kim

Min-Gyu Lee

Jung-Shik Lim

Min-Soo Park

Young-Sik Oh

A display device having a light-emitting device is provided. The display device can include a buffer insulating layer disposed on a path of light emitted from the light-emitting device. The buffer insulating layer can have a stacked structure of a first buffer insulating layer having the refractive index which decreases in a direction away from the light-emitting device, and a second buffer insulating layer having the refractive index which increases in a direction away from the light-emitting device. Thus, in the display device, the unintended constructive and destructive interference of the light emitted from the light-emitting device can be prevented. Therefore, in the display device, the luminous efficacy can be increased, and the variation of color coordinates can be prevented.

Display apparatus having a light-emitting device

Disclosed is an organic light emitting diode display device having improved light extraction efficiency and display quality. The organic light emitting diode display device includes a plurality of sub-pixels including organic light emitting cells arranged in an inner side of a substrate, a groove formed between neighboring sub-pixels, and a light extraction pattern formed over an outer surface of the substrate.

Organic light emitting diode display device

The present invention relates to an apparatus for fabricating a light guide panel which can improve light efficiency and brightness, and a backlight unit having the light guide panel. The backlight unit includes a light source for generating a light, and a light guide panel for guiding the light incident thereon from the light source, the light guide panel having an upper pattern which is formed on a front side thereof for emitting the light guided thus to upward and a lower pattern which is formed on a backside thereof for reflecting or refracting the light, wherein the lower pattern of the light guide panel is formed in an intaglio pattern having a vertical angle at which two inclined planes meet, and one of the two inclined planes the light from the light source incident thereon has an angle of 45&#x2dc;55&#xb0;.

Apparatus for fabricating light guide panel and backlight unit having the light guide panel

Growing community of inventors

Seoul, South Korea

Sun-Man Kim