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

2.3 Common Issues in High-Density Matrix LED Display

Figure 2-8 shows seven common issues in high-density matrix LED displays. Some examples are shown in Figure 2-9 and Figure 2-10. The following session goes deeper into root cause analysis and TI designs of those typical LED display challenges from IC circuits and algorithm perspectives based on TI’s latest Common Cathode Matrix LED Display Driver, TLC6983 and TLC6984. Meanwhile, you can also refer to the application note The Common LED Display Challenges in Narrow Pixel Pitch Matrix LED Display for a rough overview about these issues.

Common Issues in High-Density Matrix LED DisplayFigure 2-8 Common Issues in High-Density Matrix LED Display
LED Display Issues - Coupling, Non-uniformity and GhostingFigure 2-9 LED Display Issues - Coupling, Non-uniformity and Ghosting
A. Coupling
B. Non-uniformity
C. Ghosting
LED Display Issue - CaterpillarFigure 2-10 LED Display Issue - Caterpillar
D. Caterpillar