Ching-Shih MA

Title: Ching-Shih Ma and Her Light-Emitting Diode Innovations.

Introduction

Ching-Shih Ma is an inventor associated with Hsinchu City, Taiwan. Her patent work focuses on light-emitting diode (LED) structures and techniques for improving current distribution and light extraction. She is associated with Taiwan-Asia Semiconductor Corporation and holds 2 patents.

Latest Patents

Ma’s listed patents address current steering and current blocking in LED devices.

“Light-Emitting Diode Current Steering Device” describes a device designed to improve current steering and light extraction efficiency. Its structure includes semiconductor layers, electrodes, and a current-steering layer with an etched region. The etched region increases resistance in selected areas, guiding current toward the main semiconductor layer.

“Light-Emitting Diode Structure” describes an LED with a substrate, semiconductor layers, an intervening light-emitting layer, and electrodes. It also includes at least one current-blocking trench recessed from the light-exit surface. The trench helps direct current through the light-emitting layer outside the second electrode and toward the first electrode.

Career Highlights

Ma’s patent portfolio reflects a focus on LED device design. The inventions address how current moves through semiconductor layers, with the aim of supporting more effective light emission and extraction.

Collaborations

Ma’s listed coworkers include Kuo-Chen Wu and Kun-Te Lin. Her work is associated with Taiwan-Asia Semiconductor Corporation.

Conclusion

Ching-Shih Ma’s two listed patents center on LED current management, using steering layers and blocking trenches to guide current through light-emitting structures.