National Central University

National Sun Yat-sen University of Kaohsiung

Taiwan Applied Crystal Co., Ltd.

Tsung-Xian Lee

Ching-Cherng Sun

Yi-Chun Chen

Ming-Chi Chou

Wei-Chang Lin

Chu-An Lee

Ted Liang-Tai Lee

A light-emitting device includes a composite structure having a phosphor crystal sheet and phosphor crystal powders on the phosphor crystal sheet. A light-emitting unit of the device is disposed under a side of the phosphor crystal sheet that is opposite to a side of the phosphor crystal powders. A problem of blue-enriched white light may be tackled.

Light-emitting device and method of forming the same

An information display board with improved display performance by light-extending light sources is revealed. The information display board includes a display board and a plurality of light-extending light sources each of which consists of a light emitting diode (LED) and a reflective panel. The LED has a light emitting side and a backside while the reflective panel is disposed on the light emitting side of the LED for reflecting a part of light emitted from the light emitting side to the display board on the backside to form an expanded area. Thus illuminance and illuminated area of information shown on the display board are increased. By continuous lighting generated, messages/information shown on the information display board such as traffic sign can be read more clearly and comfortably.

Information display board with improved performance by light-extending light source having reflective panel above light-emitting diode

Growing community of inventors

Taoyuan, Taiwan

Tsung-Xian Lee