Company Filing History:
Years Active: 2012-2013
Title: Chang-Chi Pan: Innovator in Light Emitting Devices
Introduction
Chang-Chi Pan is a prominent inventor based in Taoyuan, Taiwan. He has made significant contributions to the field of light-emitting devices, holding three patents that showcase his innovative approaches to enhancing device efficiency.
Latest Patents
One of his latest patents is titled "Method for improving internal quantum efficiency of group-III nitride-based light emitting device." This patent discloses a method that includes providing a group-III nitride-based substrate with a single crystalline structure. It involves forming an oxide layer on the substrate, which has a plurality of particles that do not absorb visible light. The size, shape, and density of these particles are controlled by the reaction concentration ratio of nitrogen to hydrogen, as well as reaction time and temperature. This oxide layer prevents threading dislocation from propagating into the group-III nitride-based layer, thereby improving the internal quantum efficiency of the light-emitting device.
Another significant patent is "Method for enhancing electrical injection efficiency and light extraction efficiency of light-emitting devices." This method includes providing a site layer on the light-emitting device and placing a protection layer on top of it. A cavity is formed through both layers, and a window layer is grown within this cavity. The shape of the window layer can be controlled by adjusting the reactive temperature, time, and N/H concentration ratio of the atmosphere, allowing for changes in the light escape angle.
Career Highlights
Chang-Chi Pan is currently employed at Walsin Lihwa Corporation, where he continues to develop innovative technologies in the field of light-emitting devices. His work has significantly impacted the efficiency and performance of these devices, making them more effective for various applications.
Collaborations
He has collaborated with notable coworkers, including Ching-hwa Chang Jean and Jang-Ho Chen, contributing to a dynamic and innovative work environment.
Conclusion
Chang-Chi Pan's contributions to the field of light-emitting devices through his patents demonstrate his commitment to innovation and efficiency. His work continues to influence advancements in technology, making him a key figure in the industry.