Performance Benchmarking of Wide Color Gamut Displays. 8 January 2016
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1 Performance Benchmarking of Wide Color Gamut Displays 8 January 2016
2 Methodology Objective: To benchmark energy and color performance of various QD-based displays in market today Displays Tested: 6-55 Wide Color Gamut (WCG) Televisions: Samsung s-uhd (UN55JS9000F) Samsung InP film Philips (55PUF6850/T3) Color IQ CdSe optic Thomson (55UA9806) Color IQ CdSe optic Hisense (LED55K7100UC) Color IQ CdSe optic Hisense (LED55XT910X3DUC) 3M QDEF CdSe film Samsung s-uhd (UN55JS7000FXZA) Samsung White LED with notch filter Approach: IEC-compliant testing carried out at two distinct locations and dates using different measurement devices QD Vision in-house testing lab: Location: QD Vision, Lexington, MA; October, 2015 Equipment: Konica Minolta CS-200 color and luminance meter Independent third-party testing lab: Location: Gamma Scientific, San Diego, CA; December, 2015 Equipment: Gamma Scientific GS-1290-NVIS-2 Spectroradiometer Direct film-swapping in two 55 QD-based televisions (QD Vision lab only) Samsung s-uhd (UN55JS9000F) Samsung InP film Hisense (LED55XT910X3DUC) 3M QDEF CdSe film 2
3 Conclusions Performance benchmarking conducted by an independent, third-party laboratory confirms: Televisions using CdSe QD solutions consistently deliver the widest color gamut of all technologies tested TVs using CdSe QD solutions consistently deliver higher energy efficiency or efficacy (Nits/W) than other technologies tested Televisions using QD solutions deliver higher energy efficiency or efficacy (Nits/W) than traditional WLED+notch filter technology Keeping all other variables the same, QD film-swapping tests confirm: Replacing InP-based QD film with CdSe-based QD film results in wider color gamut and higher luminance performance Replacing CdSe-based QD film with InP-based QD film results in smaller color gamut and lower luminance performance Therefore, today s QD solutions based on CdSe are superior to those based on InP in both energy efficiency and wide color gamut performance Superior energy efficiency and color gamut performance of televisions based on CdSe QD solutions vs. InP QD solutions can be directly attributed to material performance differences: CdSe QD materials have higher quantum efficiency (EQE) directly translating to higher TV efficiency CdSe QD materials have narrower emission spectra (FWHM) directly translating to wider color gamut capability 3
4 Summary of QDV and Gamma Scientific Measurements Display FWS Luminance (Nits) QDV IEC Testing Efficacy (Nits/Watt) Color Gamut Coverage Gamut Samsung suhd JS % NTSC 1931 Philips TV (Color IQ) % NTSC 1931 Thomson (Color IQ) % NTSC 1931 Hisense (Color IQ) % NTSC 1931 Hisense (3M QDEF) % NTSC 1931 Samsung suhd JS7000* % NTSC 1931 Display Gamma Scientific IEC Testing FWS Luminance (Nits) Efficacy (Nits/Watt) Color Gamut Coverage Gamut Samsung suhd JS % NTSC 1931 Philips TV (Color IQ) % NTSC 1931 Thomson (Color IQ) % NTSC 1931 Hisense (Color IQ) % NTSC 1931 Hisense (3M QDEF) % NTSC 1931 Samsung suhd JS7000* % NTSC 1931 Display Differences Between QDV and Gamma Scientific FWS Luminance (Nits) Efficacy (Nits/Watt) Color Gamut Coverage Samsung suhd JS % -3.5% -2.6% Philips (Color IQ) -8.0% -8.1% -2.7% Thomson (Color IQ) -6.1% -5.5% -1.9% Hisense (Color IQ) -1.5% -0.9% -1.8% Hisense (3M QDEF) 4.4% 4.2% -2.4% Samsung suhd JS % -10.0% -1.8% Strong agreement between measurements performed at QDV and Gamma Scientific * - White LED system with notch filter 4
5 On-mode Power Consumption (Using Gamma-Scientific Data) Display Gamma Scientific IEC Testing On-mode Power Consumption (W) Annual On-mode Power Consumption (kwh) Samsung suhd JS Philips TV (Color IQ) Thomson (Color IQ) Hisense (Color IQ) Hisense (QDEF) Samsung suhd JS On-mode Power Consumption measured in compliance with IEC standard as average power consumption over ten minute period of dynamic broadcast signal Annual On-mode Power Consumption calculated in accordance with EU Regulation 1062/2010 * - White LED system with notch filter 5
6 Efficacy (Nits/W) vs. Color Gamut (% NTSC) Higher efficacy and Wider gamut is best (InP) (white LED with notch filter) Televisions using CdSe QD solutions consistently deliver the widest color gamut of all technologies tested Televisions using CdSe QD solutions consistently deliver higher energy efficiency or efficacy (Nits/W) than other technologies tested Televisions using QD solutions deliver higher energy efficiency or efficacy (Nits/W) than traditional WLED+notch filter technology 6
7 On Mode Power Consumption (W) vs. Color Gamut (% NTSC) Televisions using CdSe QD solutions consistently deliver the widest color gamut of all technologies tested (InP) (white LED with notch filter) Televisions using CdSe QD solutions consistently deliver higher energy efficiency or efficacy (Nits/W) than other technologies tested Televisions using QD solutions deliver higher energy efficiency or efficacy (Nits/W) than traditional WLED+notch filter technology Lower power and Higher gamut is best 7
8 Head-To-Head Comparison Of CdSe and InP QD Films (QD Vision testing only) Higher luminance and Wider gamut is best In both displays, color gamut and luminance (and thereby energy efficiency) were significantly higher when configured with CdSe QDbased film as compared to the InP QD-based film Performance difference between the CdSe and InP QD films can be directly linked to the External quantum efficiency (EQE) and FWHM of the film samples Lower EQE of the InP film results in lower luminance Broader FWHM of the InP film results in lower color gamut Film Performance Metrics (as measured by QDV) Samsung InP QD Film 3M QDEF CdSe QD Film Green Peak Wavelength 537 nm 532 nm Green FWHM 41 nm 33 nm Red Peak Wavelength 635 nm 627 nm 3M CdSe (QDEF) and Samsung InP QD films were swapped between Hisense and Samsung TVs, enabling a direct comparison of material performance independent of television set design factors Red FWHM 55 nm 37 nm EQE 56.5% 73.2% 8
9 Correcting for Gamut Differences Between TVs Due to the photopic response of the human eye (which is most sensitive to yellow light), there is an inherent tradeoff between color gamut and brightness Relative efficiency of displays can be compared at the same gamut by correcting for this effect Two different curves for the two materials are driven by the Full Width-Half Maximum performance (or FWHM) of the materials, where a narrower FWHM translates to a higher efficiency for a given color gamut Simulated relative efficiency vs. NTSC area for CdSe and InP QDs with a 536nm green QD and Samsung CFA measured from JS9000 TV. 9
10 Ranking the Efficiency of TVs at the Common Color Gamut (90% NTSC Area) Display FWS Luminance (Nits) Efficacy (Nits/Watt) Color Gamut (% NTSC Area) Relative Spectral Efficiency Native Color Gamut Relative Spectral Efficiency 90% NTSC Gamut Efficiency Change 90% NTSC Gamut Calculated Efficacy 90% NTSC Gamut (Nits/Watt) Thomson (Color IQ) % Philips TV (Color IQ) % Hisense (Color IQ) % Hisense (3M QDEF) % Samsung suhd JS % Samsung suhd JS7000* % * - White LED system with notch filter 10
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