Chih-Heng Chu is a notable inventor based in Tainan, Taiwan. He has made significant contributions to the field of display technology, particularly in the development of driving circuits for light-emitting devices. With a total of 3 patents to his name, his work has had a considerable impact on the industry.

Latest Patents

One of his latest patents is titled "Driving circuit using pulse width modulation technique for a light emitting device." This invention describes a current driving apparatus and method that utilizes a pulse width modulation (PWM) technique to display a desired gray level for passive matrix organic light-emitting diode (PMOLED) display applications. The current driving circuit includes a memory, a logic component, and a segment driver. The memory stores the desired gray level, while the logic component, which includes a counter, provides a predetermined bias time. The segment driver delivers a constant current to the PMOLED display based on the desired gray level and the predetermined bias time. The segment driver continues to provide this current until the counter reaches the desired gray level, starting from zero for the predetermined bias time and incrementing by one for every other cycle.

Another significant patent is the "Source driver for image scrolling." This invention comprises a source driver that includes a frame memory, a first line buffer, and a second line buffer. The frame memory stores bits of pixel values of an image. The first line buffer sequentially latches the bits of pixel values from the frame memory using a first address index. The second line buffer then latches the bits from the first line buffer with a different address index and writes the bits back to the frame memory, allowing the image to scroll. This invention also provides a method for refreshing the frame memory in a source driver.

Career Highlights

Chih-Heng Chu is currently employed at Himax Technologies, Inc., where he continues to innovate in the field of display technology. His work has been instrumental in advancing the capabilities of PMOLED displays and image processing.

Collaborations

He has collaborated with notable coworkers such as Ming-Cheng Chiu and Tian-Hau Chen, contributing to various projects and innovations within the company.

Conclusion

Chih-Heng Chu's contributions to display technology through his patents and work at Himax Technologies, Inc. highlight his role as a significant

Profile summary based on public USPTO records.

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