SLVAFM7 June   2024 TLC6983

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Display Technology Overview
    1. 1.1 Display Technology Comparison
    2. 1.2 LED Driver Topology
  5. 2Mini- / Micro-LED Display System Introduction
    1. 2.1 Matrix LED Display Basics
    2. 2.2 LED Display Emerging EEs and System Overview
    3. 2.3 Common Issues in High-Density Matrix LED Display
  6. 3Root Cause Analysis and TI Designs
    1. 3.1 Ghosting Issue
      1. 3.1.1 Downside Ghosting
      2. 3.1.2 Upside Ghosting
    2. 3.2 Coupling Issue
      1. 3.2.1 Brighter Coupling
      2. 3.2.2 Darker Coupling
    3. 3.3 Low Grayscale Non-Uniformity Issue
  7. 4Summary
  8. 5References

Abstract

The Mini- / Micro-LED display is getting more and more popular in variant EEs, such as Narrow Pixel Pitch (NPP) LED display, LED green screen, LED cinema screen, AR/VR, and animated automotive rear lighting. The increasing popularity of the LED display in these EEs is due to the advantages of high brightness, high contrast ratio, outstanding image quality, and long life.

Behind the LED display, there are many design challenges with the LED driver. What new challenges about display performance are you going to meet when the resolution and pixel density of the display gets higher and higher? What are the root causes of these display challenges and what circuits and algorithms inside the driver are used to solve them?

This application note can firstly bring you a thorough understanding of display technology, LED driver topology, matrix LED display driver architecture and system. Then the discussion goes deeper into root causes and designs of several typical LED display challenges, from IC circuits and algorithm perspectives, based on TI’s latest Common Cathode Matrix LED Display Driver TLC6983 and TLC6984.