On November 6, Hongshi Intelligent announced the launch of its 585 nm amber MicroLED microdisplay product, delivering a peak brightness of 2,000,000 nits. Developed on Hongshi’s 0.12-inch, 3.75 μm pitch platform, this offering further expands the color gamut options for its microdisplay portfolio.

Figure 1: Lit amber panel

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This development was driven by custom requirements for a specific light wavelength from top global customers. Achieving the high brightness specification for amber emission posed a major technical challenge throughout the project.

Figure 2: Actual lighting performance

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The product adopts quantum dot (QD) materials with in-house developed formulations and synthesis by Hongshi. The target emission color is realized via quantum dot photoresist (QDPR) color conversion process. Covering material formulation, synthesis and device integration into microdisplay chips, Hongshi combined its proprietary QD technology with its existing product platform to complete the development of this amber microdisplay.

Figure 3: Amber quantum dot (QD) materials

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