Field Sequential Color LCD-TVs and Monitors

1. Executive Summary

• 1.1. Overview of this Report
• 1.2. Primary Conclusions

2. Introduction

3. AMLCD Monitors - The State Of The Art

• 3.1. Performance and Key Operating Characteristics
  • 3.1.1 Resolution
  • 3.1.2 Contrast
  • 3.1.3 Response Time and Motion Artifacts
  • 3.1.4 Viewing Angle
  • 3.1.5 Brightness
  • 3.1.6 Power Dissipation / Efficiency
  • 3.1.7 Cost
• 3.2. Architectures and Approaches
  • 3.2.1 Color Filters
  • 3.2.2 LC Cell
    • 3.2.2.1 Twisted Nematic (TN) LCD
    • 3.2.2.1 Vertically Aligned Nematic (VAN) LCD
    • 3.2.2.2 In-Plane Switching (IPS) LCD
  • 3.2.3 Backlight
  • 3.2.4 Architectures for Mitigation of Motion Artifacts
• 3.3. Summary - Spatial Color Monitors

4. Field Sequential Color Monitors

• 4.1. Introduction
• 4.2. FSC Operating Principles and Issues
  • 4.2.1 Color-Sequential Backlight
  • 4.2.2 AMLCD Addressing and Timing
  • 4.2.3 Motion Artifacts and Color Breakup
• 4.3. FSC Architectures and Approaches
  • 4.3.1 Fast LCD Technologies
    • 4.3.1.1 VAN (microdisplays)
    • 4.3.1.2 Ferroelectric LCDs
    • 4.3.1.3 Optically Compensated Bend (OCB) LCD
  • 4.3.2 FSC Backlight Architectures
• 4.4. Recent FSC Activities and Demonstrations
  • 4.4.1 Samsung
  • 4.4.2 Toshiba
  • 4.4.3 AU Optronics Corp (AUO)
  • 4.4.4 Chunghwa Picture Tubes (CPT)
  • 4.4.5 HDT

5. Summary - FSC vs Spatial Color

• 5.1. Performance Trades
• 5.2. Cost Trades
• 5.3. Power / Weight Trades
• 5.4. Risks / Concerns
  • 5.4.1 OCB LCD technology
  • 5.4.2 Backlight cost / complexity
  • 5.4.3 Image quality
  • 5.4.4 Refresh rate
• 5.5. Development Roadmap

• Figure 1: A half-century of field-sequential color
• Figure 2: Spatial Color AMLCDs have Limited Transmittance
• Figure 3: AMLCD Using Stripe Color Filter Mosaic
• Figure 4: AMLCD Color Filters each transmit selective portions of backlight spectrum
• Figure 5: Non-uniform Tilt Orientation Causes Visible Artifacts
• Figure 6: Twisted Nematic (TN) LCD
• Figure 7: Multidomain Vertical Aligned LCD (MVA)
• Figure 8: In-Plane Switching LCD (IPS)
• Figure 9: AMLCD Backlight Architectures
• Figure 10: Backlight Timing
• Figure 11: Field Sequential Color Image Generation
• Figure 12: FSC Timing Requirements
• Figure 13: Optically Compensated Bend (OCB) LCD
• Figure 14: Toshiba 32-inch Spatial Color OCB AMLCD
• Figure 15: FSC Scanning Backlight
• Figure 16: Lightguide Structure for FSC Scanning Backlight
• Figure 17: Samsung 32-in FSC Display (ca 2005)
• Figure 18: Mitigating Motion Artifacts with OCB Television (CPT)
• Figure 19: HDT Flight Information Display

• Table 1: Large Screen LCD Television and Monitor Performance
• Table 2: Notebook PC Displays
• Table 3: LC Operating Modes and Suppliers
• Table 4: Some Solid State Monitor Backlights
• Table 5: Comparing Four AMLCD Monitors
• Table 6: Cost Comparison Spatial Color vs. FSC
• Table 7: Development Roadmap