LED modules, what they are and how they work

Lumen+ - LED Modules, Arkalumen

How do large LED Matrix Displays work? - LEDs and Multiplexing - Arduino Forum

Some Basic Knowledge of LED Modules

How to Fix Your LED Strip Remote Dimmer - LEDSupply Blog

How Jumbo TV Screens Work

Found some working HP 5082-7415 & 7405 7-seg led modules from the 70s and made an interface board (Link in comments) : r/electronics

Overview of the student-led modules for students in the ClinEd 711 course

LED Module - Efficiency, Longevity, And Design Flexibility - Jhdpcb

Usage and Types of LED Light Modules – LEDMyPlace

WL5000R tripod for battery powered work spotlights – Ansmann: 2 LED modules, 5000 lm

LED modules, what they are and how they work

2-light Waterproof Module - LED module - News