Observational analysis shows flexible control of brightness in Micro LED displays using PHM dimming technology, indicating advantages over PWM and PAM methods.
This paper introduces a Double Data PHM drive system, focusing on PHM dimming technology, system design and verification The system is implemented on FPGA and applied to the Micro LED display based on LTPS glass substrate. Compared with PWM dimming technology and PAM dimming technology, the amplitude and width of LED driving pulse in PHM dimming technology can be adjusted, and the control of Micro LED display brightness is more flexible [1] K At present, the feasibility of Double Data PHM drive system has been verified on TCL CSOT 6.79 inch Micro LED products.
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Li et al. (2025) studied this question.
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