Koji Henmi

Title: Koji Henmi: Innovator in Luminescent Display Technology

Introduction

Koji Henmi is a notable inventor based in Yonezawa, Japan. He has made significant contributions to the field of luminescent display technology, holding a total of 3 patents. His work focuses on enhancing the performance and longevity of display panels, particularly in addressing issues related to aging.

Latest Patents

Henmi's latest patents include a "Device for and method of driving luminescent display panel." This invention provides a driving device that compensates for the decrease in luminance characteristic due to the aging of an electroluminescent (EL) display panel. The device utilizes a transparent substrate, such as glass, on which multiple luminescent elements are laminated. This design allows light from the luminescent elements to be radiated through the substrate, forming a display image. The driving device is equipped with photo-electric conversion means that produce an electric signal when receiving part of the light from the luminescent elements. Additionally, it includes drive power setting means that adjust the luminescent drive power supplied to each element, effectively compensating for luminance loss over time.

Another significant patent is the "Apparatus and method for driving luminescent display panel." In this invention, scanning lines are sequentially scanned to drive and illuminate light-emitting elements. A voltage peak value arising in a non-scanning state is held by a capacitor through the parasitic capacitance of the light-emitting element. This held voltage is used to control the reverse bias voltage output from a generation circuit, which is then supplied to the scanning lines.

Career Highlights

Koji Henmi is currently employed at Tohoku Pioneer Corporation, where he continues to innovate in the field of display technology. His work has been instrumental in advancing the capabilities of luminescent displays, making them more efficient and reliable.

Collaborations

Henmi collaborates with talented coworkers, including Naoki Yazawa and Gen Suzuki. Their combined expertise contributes to the development of cutting-edge technologies in the display industry.

Conclusion

Koji Henmi's contributions to luminescent display technology demonstrate his commitment to innovation and improvement in this field. His patents reflect a deep understanding of the challenges faced by display technologies and offer practical solutions to enhance their performance.