2008 PERFORMANCE BENCHMARK REPORT ON LCD HDTVs

Table of Contents
1 Table of Contents 2
2 Overview 4
3 Introduction 5
4 Picture Quality and Viewing Angle 6
    4.1. CRT and Plasma Viewing Angle Performance 6
    4.2. LCD Viewing Angle Artifacts 6
    4.3. Manufacturer's Published LCD Viewing Angle Specifications 7
    4.4. Extended Color Gamut Effects 7
    4.5. Change in Color with Viewing Angle Data 7
5 Contrast Ratios and Black Levels 9
    5.1. Contrast Ratio and Black Level Data 10
    5.2. Variation with Viewing Angle 10
    5.3. Dynamic Backlights and Dynamic Contrast Ratios 10
    5.4. LED Local Dimming Backlights 10
6 Motion Smear 11
    6.1. LCD Response Time 11
7 Screen Photos from the Viewing Tests 12
8 Photometry and Colorimetry Measurements 14
9 Luminance and Contrast Ratio 14
10 Transfer Function and Gamma 15
11 Primary Chromaticities 19
Table of Figures
TABLE OF FIGURES  
Figure 1: Panoramic Photograph of the Shoot-Out 4
Figure 2: Color Mixture Color Shifts 8
Figure 3: Primary Color Shifts 9
Figure 4: Red Door - On-axis color is good, but shifts to orange in off-angle Sony LCD (Photograph - Don Cochran) 12
Figure 5: Girl with Painted Face - Notice the change in the skin color in the off-axis LCD (Photographer Steve Kelly) 14
Figure 6: Spanish Oranges - Notice the oranges change color and look like pinkish grapefruits in the off-axis LCD (Photographer Sergio Parisi) 16
Figure 7: New York City at Night - Photographer Paulo Barcellos Jr. The LG LCD produces a noticeably hazy background, especially in off-angle viewing 18
Figure 8: Transfer Functions for the Samsung Unit with LED Local Dimming On and Off 22
Figure 9: Comparison of the Transfer Functions on a Common Percent of Peak Luminance Scale 23
Figure 10: Magnified View of Figure 9 Near Peak Luminance and Signal Intensity 24
Figure 11: 1976 CIE Uniform Chromaticity Diagram for the Sony KDL-52XBR4 Unit 26
Figure 12: 1976 CIE Uniform Chromaticity Diagram for the Samsung LN-T5281F Unit 26
Figure 13: 1976 CIE Uniform Chromaticity Diagram for the Sharp LC-52D92U Unit 27
Figure 14: 1976 CIE Uniform Chromaticity Diagram for the LG 42LC5DC Hospitality Unit 27
Table of Tables
Table 1: Contrast Ration with Viewing Angle 10
Table 2: Contrast Ration with Viewing Angle 10
Table 3: Photometry and Colorimetry Measurements Summary 20
 

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