On November 8, Sichuan Qiruike Technology Co., Ltd. (Qiruike), a subsidiary of Changhong, announced that it has been granted a patent titled “Hybrid Projection Optical Device Based on Micro-LED and Micro-QLED,” with the publication number CN221960401U. This groundbreaking technology is set to revolutionize the design of traditional projection equipment while effectively addressing the issue of insufficient red light brightness that many current projection technologies face.

Core Technology: Hybrid Use of Micro-LED and Micro-QLED
The key to this patent lies in the hybrid use of Micro-LED and Micro-QLED display technologies. Micro-LED is known for its high brightness and wide color gamut, while Micro-QLED is widely recognized for its excellent color performance and higher pixel density. By using an X-Cube color-mixing prism, Qiruike has achieved efficient color combination, particularly in enhancing red light brightness, resulting in a more comprehensive light source solution.
Advanced Optical Design for Improved Projection
In the design of this projection optical device, the green Micro-LED micro-display screen is positioned directly in front of the projection lens’s light entry, while the blue Micro-LED and red Micro-QLED are arranged at 90-degree angles relative to the green Micro-LED. This thoughtful engineering design combines the strengths of both technologies, significantly reducing red light loss and dramatically improving red light brightness. This results in notable advantages, particularly in displaying vibrant colors. The technology’s effectiveness in outdoor and bright environments is especially prominent, meeting users’ needs in various lighting conditions.
Addressing Common Issues in Micro-QLED Technology
Additionally, this design has successfully avoided the common pixel crosstalk issue in Micro-QLED technology. While Micro-QLED offers many advantages, pixel crosstalk can occur in high-brightness environments due to light interactions between pixels, affecting image quality. Qiruike’s innovative design optimizes light path configuration and screen combination, reducing this risk and enhancing overall image clarity and quality. This makes the projection performance in specific scenarios even more outstanding.
Diverse Applications and Future Prospects
In practical applications, this technology will undoubtedly drive the diversification of projectors. Whether for classroom teaching in education, product launch events in business displays, or movie-watching experiences in home entertainment, Qiruike’s hybrid Micro-LED and Micro-QLED projection optical device will offer more vivid and realistic image representations. As the technology matures, it is anticipated that more smart devices will adopt this advanced projection technology, further enhancing the overall user experience.
Company Overview
Sichuan Qiruike Technology Co., Ltd. was established on March 29, 2021, with a registered capital of 100 million CNY. It is a wholly-owned subsidiary of Changhong Electronics. The company serves as a research and development platform for forward-looking, common technology reserves, new business/product incubation, and industry demand empowerment. Headquartered in Chengdu, Sichuan, Qiruike has established research bases in Mianyang and Hefei.

The company is dedicated to future-oriented technological research and the transformation of research outcomes in key areas such as MEMS components, big data, cloud computing, artificial intelligence, information security, robotics, and new energy materials. It actively supports existing business technologies, explores new business directions, and innovates in the mechanisms of technological advancement.
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