Comparison of CRT, LCD, plasma, and OLED

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Parameter CRT LCD Plasma
Contrast Over 15,000:1[1] 5,000 to 10,000:1[2] 10,000:1[3]
Color depth 24-bit per pixel resolution; offers better resolution for grayscale 6 to 10-bit per subpixel panels;[4] smaller dot pitch, better detail[5] 6 to 8-bit per subpixel panels; best color gamut[6][7]
Response time Less than 1 µs[8] 1–8 ms typical (according to manufacturer data), older units could be as slow as 35 ms[9] Less than 1 µs; can get up to 0.001 µs[10]
Frame rate 60–85 fps typically, some CRTs can go even higher (200 fps at reduced resolution[11]);
internally, display refreshed at input frame rate speed
60 fps typically, some can do 120 fps;
internally, display refreshed at up to 240 Hz[12]
60 fps typically, some can do 120 fps;
internally, display refreshed at e.g. 480 or 600 Hz[13]
Environmental influences Sensitive to ambient magnetic fields, which can adversely effect convergence and color purity. Prone to malfunctions on both low (below -4 °F\-20 °C) or high (above 45 °C\113 °F) temperatures[14] High altitude pressure difference may cause poor function or buzzing noises[15]
Flicker Perceptible on lower refresh rates (60 Hz and below)[16] Depends; as of 2013, most LCDs use PWM (strobing) to dim the backlight[17] Does not normally occur due to high refresh rate.[18]
Size Up to 43" Up to 108"(2.78m)[19] Up to 150"(3.8m)[20]
Energy consumption and heat generation High[21] Low[21]
Varies with brightness but usually higher than LCD[22][23][24][25]
Maintenance Hazardous to repair or service due to high-voltage,
requires skilled convergence calibration and adjustments for geographic location changes[26]
Risky and expensive to repair due to complexity of the display;[27] mercury lamps make it a minor environmental hazard[28] Screen itself cannot be repaired if the gas used to generate images leaks[29]
Electro-magnetic radiation emission Can emit a small amount of X-ray radiation. Only emits non-ionizing radiation.[30] Emits strong radio frequency electromagnetic radiation[31]
Other No native resolution. Currently, the only display technology capable of multi-syncing (displaying different resolutions and refresh rates without the need for scaling).[32] Display lag is extremely low due to its nature, which does not have the ability to store image data before output, unlike LCDs, plasma displays and OLED displays.[33] The LCD grid can mask effects of spatial and grayscale quantization, creating the illusion of higher image quality.[34]
Screen-door effects are more noticeable than LCD when up close, or on larger sizes;[35]

References[edit]

[36]

www.tvrepairsa.com

  1. ^ Display "Technology Shoot-Out: Comparing CRT, LCD, Plasma and DLP Displays", Dr. Raymond M. Soneira, DisplayMate Technologies website
  2. ^ [1]
  3. ^ [2]
  4. ^ [3]
  5. ^ COP 3502 Introduction to Computer Science
  6. ^ [4]
  7. ^ CNET AustraliaPlasma vs. LCD: Which is right for you?
  8. ^ "An investigation of the test process used to date for determining the response time of an LCD monitor, known as input lag – Thomas Thiemann at prad.de"
  9. ^ "LCD Monitors, TVs: Electronics – Microcenter", Scroll down and look at the bar on the left to see the number of monitors they offer that have certain specifications. Retrieved April 2013
  10. ^ [5]
  11. ^ http://downloads.bbc.co.uk/rd/pubs/whp/whp-pdf-files/WHP169.pdf
  12. ^ HDTV Refresh Rates Explained: 60Hz, 120Hz, and Beyond, Retrieved April 2013
  13. ^ "What is 600Hz Sub Field Drive?", Retrieved April 2013
  14. ^ Does Altitude or Temperature Affect LCD Monitors?
  15. ^ PlasmaTVBuyingGuide.com Plasma TVs at Altitude
  16. ^ "CRT Monitor Flickering?". Retrieved 4 October 2009. 
  17. ^ Explanation of why pulse width modulated backlighting is used, and its side-effects, "Pulse Width Modulation on LCD monitors", TFT Central. Retrieved June 2012.
  18. ^ How Do Plasma TVs Create No Flicker?
  19. ^ "Sharp to Introduce World's Largest*1 108-Inch LCD Monitor for Commercial Applications; Now Accepting Orders" (Press release). Sharp Corporation. 13 June 2008. 
  20. ^ Dugan, Emily (8 January 2008). "6ft by 150 inches – and that's just the TV". The Independent. London. 
  21. ^ a b Tom's Hardware: Power Consumption Benchmark Results for CRT versus TFT LCD "Benchmark Results: Different Brightness Testing"
  22. ^ "LCD vs Plasma TVs". Which?. Retrieved 26 October 2011. 
  23. ^ Plasma vs LCD power consumption shootout
  24. ^ Plasma vs LCD vs LED - Digital Direct
  25. ^ Power! | Sound & Vision
  26. ^ "Monitors: Earth's Magnetic Field Affects Performance". Apple Support Knowledgebase. Apple. Retrieved 21 June 2012. 
  27. ^ [6]
  28. ^ [7]
  29. ^ Plasma Repair Answers
  30. ^ [8]
  31. ^ eham Amateur Radio Forum "Plasma TV – Mother of All RFI Producers", Retrieved April 2013
  32. ^ Native Resolution - AfterDawn: Glossary of technology terms & acronyms
  33. ^ https://web.archive.org/web/20150220052714/http://meleeiton.me/2014/03/27/this-tv-lags-a-guide-on-input-and-display-lag/. Archived from the original on February 20, 2015. Retrieved February 22, 2015.  Missing or empty |title= (help)
  34. ^ M. d’Zmura, T. P. Janice Shen, Wei Wu, Homer Chen, and Marius Vassiliou (1998), “Contrast Gain Control for Color Image Quality,” IS&T/SPIE Conference on Human Vision and Electronic Imaging III, San Jose, California, January 1998, SPIE Vol. 3299, 194–201.
  35. ^ https://web.archive.org/web/20120426051605/http://www.home-theater-automation-and-electronics.com/PlasmaTelevisionGuide.html. Archived from the original on April 26, 2012. Retrieved May 2, 2012.  Missing or empty |title= (help)
  36. ^ Dangers Of Hanging CRT, LCD And Plasma TV Over Fireplace