Development of a high brightness field emission lighting device with ITO electrode

• Main Authors: WANG, YUN-LIN, 王昀霖
• Other Authors: LI YUAN-YAO
• Format: Others
• Language: zh-TW
• Published: 2019
• Online Access: http://ndltd.ncl.edu.tw/handle/px5qa3

碩士 === 國立中正大學 === 光機電整合工程研究所 === 107 === The field emission (FE) device is one of important options for lighting application, due to its two-dimensional (2D) luminescence characteristics in comparison with 0D light emitting diode and 1D fluorescent tube lighting. However, field emission lighting device with high luminance, long lifetime and high efficiency is under the research and development. In this study, a transparent electrode was fabricated using ITO glass, and a carbon nanotube was used as a field emission source. Novel lateral cathode and interdigital cathode structures were fabricated for FE lighting. The results showed that, with pulse modulation technique and novel structure, a high brightness 19451 cd/m^2 high uniformity (82%) and high luminance stability ( 15% drop in 120 minutes ) can be. The second part uses the commercially available phosphors to measure the red, green and blue color coordinates: Red ( 0.655, 0.336 ), Green ( 0.252, 0.658 ) and Blue ( 0.141, 0.081 ). Then use the color center of gravity law to calculate the required ratio as R: G : B = 0.23 wt% : 0.34 wt%: 0.14 wt%, with a soft white light and a brightness of about 4000 cd/m^2 at 4000 V.