Samsung Electronics Co., Ltd.

Samsung Corning Precision Materials Co., Ltd.

Yong Keun Jee

Jin Tae Kim

Hyun Kyung Kim

Tetsuo Ariyoshi

Dong Hee Lee

Jin Jong Kim

Choul Ho Lee

Ki Un Lee

Hyun Do Park

Hyung Bin Youn

Choong Gunn Park

Byung Kwan Song

Won Do Kee

Seok Mo Ban

Keun Seok Lee

Kyeong Taek Jung

Seok Kyu Kim

Joo Hun Han

Yun Whan Na

Ki Yeon Lee

Do Hyeon Lee

Sun Woo Im

Je Myung Park

There is provided a light emitting diode (LED) lens for double-sided lighting, including a light diffusion agent diffused therein, the LED lens including a light receiving portion receiving light, a first light transmitting portion corresponding to the light receiving portion and transmitting a portion of the light in an upward direction therefrom, a reflective portion extended from the first light transmitting portion and reflecting a portion of the light, and a second light transmitting portion facing the first light transmitting portion and transmitting the light reflected by the reflective portion in a downward direction therefrom.

LED lens and LED module for two-sided lighting, and LED two-sided lighting apparatus using same

An LED lamp driving circuit includes: a thermistor having one terminal through which an external voltage is applied; an AC-DC conversion unit connected to the other terminal of the thermistor and converting an AC voltage applied to the other terminal of the thermistor into a DC voltage; and a DC-DC conversion unit converting the DC voltage from the AC-DC conversion unit into a DC voltage required to drive the LED lamp.

LED lamp and driving circuit for the same

A surface light source includes a plate type light source body having a sealed discharging space formed therein, a plate type electrode unit having a plurality of regions adjacent to at least one major surface of the light source body, and a multiple voltage applying unit operable to apply voltages independently to each of the plurality of regions. In this way, brightness of the surface light source can be controlled independently in each of the plurality of regions and a local dimming for a surface light source can be realized.

Surface light source, method of driving the same, and backlight unit having the same

Growing community of inventors

Suwon-si, South Korea

Yong Keun Jee