Nan-chou David Liu

Title: Innovations of Nan-chou David Liu

Introduction

Nan-chou David Liu is a notable inventor based in Chutung, Taiwan. He has made significant contributions to the field of display technology, particularly in the development of methods for forming color display screens and phosphor layers. With a total of 2 patents, his work has advanced the manufacturing processes used in cathode ray tubes.

Latest Patents

One of Liu's latest patents is a self-aligned method for forming a color display screen. This innovative process utilizes a single photolithographic mask to define multiple patterns, allowing for the precise placement of different phosphor layers. Unlike conventional masks that are either fully transparent or opaque, Liu's mask features a grey scale of optical densities. This enables careful control of exposure and development time, resulting in the selective removal of parts of a positive photoresist layer. The uncovered adhesive sites then serve as locations for applying phosphor particles, enhancing the efficiency of the manufacturing process.

Another significant patent by Liu is a method for forming a phosphor layer on a substrate. This method employs a double-sided adhesive tape that consists of a dry adhesive sandwiched between two protective layers. By stripping away one protective layer and pressing the adhesive against the substrate, bubble-free adhesion is achieved. After applying the phosphor particles to the exposed adhesive surface, any weakly adhering particles are removed. The final step involves heat treatment to remove the dry adhesive layer, leaving a uniform layer of particles on the substrate.

Career Highlights

Liu is currently associated with the Industrial Technology Research Institute, where he continues to innovate in the field of display technology. His work has not only contributed to advancements in manufacturing processes but has also paved the way for improved display quality in various applications.

Collaborations

Some of Liu's notable coworkers include Jin-Yuh Lu and Lyuji Ozawa, who have collaborated with him on various projects within the research institute.

Conclusion

Nan-chou David Liu's contributions to display technology through his innovative patents have significantly impacted the manufacturing processes of color display screens and phosphor layers. His work exemplifies the importance of innovation in advancing technology and improving product quality.