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

2.2 LED Display Emerging EEs and System Overview

Because of the excellent display performance of LED display, there are some emerging end equipment applications, such as LED green screen for virtual production, LED Cinema Screen, LED commercial display and animated automotive flexible rear light.

The LED display system, the breakdown drawing and the typical block diagram are shown in Figure 2-5, Figure 2-6 and Figure 2-7, respectively. In this example, a 4K screen has around 30Ku LED drivers, without counting FPGA, LED drivers take more than 98% BOM cost.

The main opportunity is LED driver. One LED Panel has 36pcs LED Drivers. One 4K Screen has approximately 30Ku LED drivers.

LED Display SystemFigure 2-5 LED Display System
Application in the LED Display SystemFigure 2-6 Application in the LED Display System
LED Display Panel Block DiagramFigure 2-7 LED Display Panel Block Diagram
A. Two drivers control 32 × 18 RGB LED array
B. One LED panel uses 36 pcs TLC698x
C. One 4K screen uses 28.8Ku driver.