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New TV and Computer Displays

New TV and Computer Displays. Christos Laoutaris. Overview. New TV Displays : OLED Technology 3D TV Technology Ultra Hi-Vision TV Computer Monitors. OLED (Organic Light Emitting Diode). What is an OLED?. OLED - O rganic L ight E mitting D iode

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New TV and Computer Displays

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  1. New TV and Computer Displays Christos Laoutaris

  2. Overview New TV Displays: • OLED Technology • 3D TV Technology • Ultra Hi-Vision TV Computer Monitors

  3. OLED(Organic Light Emitting Diode)

  4. What is an OLED? OLED - Organic Light Emitting Diode An OLED consists of an emissive organic material, that when supplied with an electrical current, can produce a superior full-color flat panel display.

  5. Architecture of OLEDs • Emissive and conductive layer lie between the cathode and the anode layers • Substrate (clear plastic, glass, foil) - The substrate supports the OLED.

  6. Architecture of OLEDs • Emissive and conductive layer lie between the cathode and the anode layers • A current is applied across the LED, where electrons move from cathode to anode • Substrate (clear plastic, glass, foil) - The substrate supports the OLED.

  7. Architecture of OLEDs • Emissive and conductive layer lie between the cathode and the anode layers • A current is applied across the LED, where electrons move from cathode to anode • The cathode gives electrons to the emissive layer, where the anode withdraws these electrons from the conductive layer • Substrate (clear plastic, glass, foil) - The substrate supports the OLED.

  8. Architecture of OLEDs • Emissive and conductive layer lie between the cathode and the anode layers • A current is applied across the LED, where electrons move from cathode to anode • The cathode gives electrons to the emissive layer, where the anode withdraws these electrons from the conductive layer • The emissive layer becomes rich in negative charge while the conductive layer becomes more positively charged • Substrate (clear plastic, glass, foil) - The substrate supports the OLED.

  9. Architecture of OLEDs • Emissive and conductive layer lie between the cathode and the anode layers • A current is applied across the LED, where electrons move from cathode to anode • The cathode gives electrons to the emissive layer, where the anode withdraws these electrons from the conductive layer • The emissive layer becomes rich in negative charge while the conductive layer becomes more positively charged • The two charges recombine in the emissive layer, creating a drop in energy levels of the electrons • The drop in energy levels results in radiation that is on the visible spectrum, emitting light • Substrate (clear plastic, glass, foil) - The substrate supports the OLED.

  10. Types of OLEDs Active OLEDs • Full layers of cathode and anode •  Anode over lays a thin film transistor (TFT) • Requires less power • Higher refresh rates • Suitable for large screens Passive OLEDs • The organic layer is between strips of cathode and anode that run perpendicular • The intersections form the pixels •  Easy to make • Use more power • Best for small screens

  11. Types of OLEDs Transparent OLEDs • Transparent OLEDs have only transparent components (substrate, cathode and anode) • When a transparent OLED display is turned on, it allows light to pass in both directions. A transparent OLED display can be either active- or passive-matrix

  12. Samsung’s new 14 inch transparent OLED laptop

  13. OLED Televisions Sony • Released XEL-1 in February 2009.  • First OLED TV sold in stores. • 11'' screen, 3mm thin • US$2500 • Weighs approximately 1.9 kg • Wide 178 degree viewing angle • 1,000,000:1 Contrast ratio

  14. OLED vs LED Backlighting LCDviewing angles

  15. some OLED TV

  16. New OLED 3D TV’s • Sony plans to introduce new OLED TVs soon. There are talks of a 27", 21" or maybe even 30" TVs. • Samsung 30-inch 3D AMOLED TV • LG 31’’ 3D OLED TV

  17. LG 31-inch 3D OLED TV,pictures from IFA2010

  18. LG 31-inch 3D OLED TV super slim TV

  19. Advantages of OLEDs OLED Displays Vs. LCD and Plasma 1. Thinner, lighter and more flexible

  20. Advantages of OLEDs OLED Displays Vs. LCD and Plasma 1. Thinner, lighter and more flexible The plastic, organic layers of an OLED are thinner, lighter and more flexible than the crystalline layers in a LED or LCD

  21. Advantages of OLEDs OLED Displays Vs. LCD and Plasma 1. Thinner, lighter and more flexible 2. Bright from all viewing angles

  22. Advantages of OLEDs OLED Displays Vs. LCD and Plasma 1. Thinner, lighter and more flexible 2. Bright from all viewing angles OLEDs have large fields of view, about 170 degrees.

  23. Advantages of OLEDs OLED Displays Vs. LCD and Plasma 1. Thinner, lighter and more flexible 2. Bright from all viewing angles OLEDs have large fields of view, about 170 degrees. LCDs work by blocking light, while OLEDs produce their own light, therefore OLED have a much wider viewing range.

  24. Advantages of OLEDs OLED Displays Vs. LCD and Plasma 1. Thinner, lighter and more flexible 2. Bright from all viewing angles OLEDs have large fields of view, about 170 degrees. LEDs and LCDs require glass for support, and glass absorbs some light. OLEDs do not require glass.

  25. Advantages of OLEDs OLED Displays Vs. LCD and Plasma 1. Thinner, lighter and more flexible 2. Bright from all viewing angles 3 Consume significantly less energy

  26. Advantages of OLEDs OLED Displays Vs. LCD and Plasma 1. Thinner, lighter and more flexible 2. Bright from all viewing angles 3 Consume significantly less energy Because OLEDs do not require backlighting, they consume much less power than LCDs (most of the LCD power goes to the backlighting)

  27. Advantages of OLEDs OLED Displays Vs. LCD and Plasma 1. Thinner, lighter and more flexible 2. Bright from all viewing angles 3 Consume significantly less energy 4. OLEDs refresh almost 1,000 times faster then LCDs 5. Easier Production Process - Potentially Lower Production Costs

  28. Disadvantages of OLEDs OLED Displays Vs. LCD and Plasma 1. Lifetime - The organic material that is being used only has a limited lifespan.

  29. Disadvantages of OLEDs OLED Displays Vs. LCD and Plasma 1. Lifetime - The organic material that is being used only has a limited lifespan. According to some studies, after around 14,000 hours (5 years per 8 hours a day) of using OLED television the quality of images(blue color) will fade half to its original brightness. Unlike its competitors which lifespan is around 60,000 hours. 

  30. Disadvantages of OLEDs OLED Displays Vs. LCD and Plasma 1. Lifetime - The organic material that is being used only has a limited lifespan. According to some studies, after around 14,000 hours (5 years per 8 hours a day) of using OLED television the quality of images(blue color) will fade half to its original brightness. Unlike its competitors which lifespan is around 60,000 hours.  2. Manufacturing - Manufacturing processes are expensive right now. 3. Water - Water can easily damage OLEDs.

  31. 3D Display

  32. Overview of 3D display techniques Stereoscopic Display Auto -Stereoscopic Display

  33. History of 3D (stereoscopic) contents • 1858 World’s first three-dimensional image (still picture) was shown: • 1895 Motion pictures are invented: The Lumière brothers of France (Auguste and Louis) • Premiere of the first 3D movie: The first 3D movie featuring the anaglyph process, “The Power of Love”, • 1952 – 1954 The first 3D cinema boom: As the number of movie-goers declined with the growing popularity of television, • 1981 – 1984 The second wave of 3D cinema: Many directors start to actively produce 3D movies again when CATV channels begin to broadcast 3D programs.

  34. 3D movie releases over the years

  35. StereoscopicDisplay • A stereoscopic effect can be obtained from video on a flat two-dimensional (2D) screen by employing some form of filtering to ensure that information representing a different perspective is presented to each eye Left Right Combined

  36. Stereoscopic Displays Active Stereoscopic TV using • Coloredglasses • Shutter glasses • Passive Stereoscopic TV using: • Polarised glasses

  37. Stereoscopic TV using Coloured glasses • This is the oldest of all of the • stereoscopic projection systems; • Practical with most existing displays; • Already used on some Blu-Ray discs • Very low cost passive glasses • Colour reproduction problems • Poor quality “3D” results in a home viewing environment

  38. Stereoscopic TV using Shutter glasses • Plasma, LCD (240Hz w/LED Backlight) and soon OLED. • Full 1080p image per eye (Plasma and LCD) • Glasses can be up to 150€ per pair • Currently almost all consumer 3D displays are active glasses based. • Batteries Required • Communicates with TV via BlueTooth or Infrared

  39. Stereoscopic TV using Polarised glasses • Each filter passes only that light which is similarly polarized and blocks the light polarized in the opposite direction, each eye sees a different image • Half resolution per eye • Polarizing filter adds significant cost to the display • Uses inexpensive circular polarized glasses

  40. 15000 LG LD920 3D TV passiveshutterdeal • Sky 3D is a 3DTV channel in UK that launched on 3 April 2010 with the Manchester United vs Chelsea football match being broadcast in over a thousand pubs across England in 3D. • On 1 October 2010, Sky 3D became available to residential subscribers.

  41. Auto-stereoscopic TV • Autostereoscopic 3D television sets have two main technologies lenticular lenses and parallax barrier. Parallaxbarrier Lenticularsheet

  42. Lenticularlens

  43. Toshiba's new Glasses-less 3D REGZA GL1 Toshiba recommend sitting 65cm away from the 12-inch display and 90cm away from the 90cm panel.

  44. Ultra High Definition Television (UHDTV) • Ultra High Definition Television (UHDTV)  is an experimental digital video format, currently proposed by NHK of Japan, the BBC, and RAI. • NHK is calling this video format Super Hi-Vision (SHV)

  45. Super Hi-Vision has extremely high spatial resolution, 33 million pixels per frame, and it can provide viewers with stunning images. • The wide visual angle of 100 degrees provides viewers with an immersive feeling. • The purpose of Super Hi-Vision to home is to provide a totally new viewing experience to enjoy wide and extremely high resolution images from any viewing distance. 7680 4320 Viewing distance : 0.75 x Picture height Viewing angle : 100 degrees

  46. Comparisonbetween HDTV – Digital Cinema and Super Hi-Vision

  47. The BBC, in conjunction with Japanese public broadcaster NHK, have collaborated for a live performance with a Super Hi-Vision camera at 7,680x4,320 (8K) resolution and sent the live broadcast to Japan.http://www.engadget.com/2010/09/30/first-super-hi-vision-broadcast-from-uk-to-japan-is-one-for-the/

  48. Computer Monitors

  49. 99% of the LCDs sold today come with TN(Twisted Nematic + Film) panels TN panels have good response time, usually have better contrast controls, and are above all, cheap. However, TN Panels suffer from bad viewing angles, and low NTSC color gamut. Also most digital displays on the market today cannot surpass 24-bit “True Color” depth (meaning 8 bits per channel, or 256x256x256 RGB)

  50. IPS technology (In Plane Switching) IPS technology was developed by Hitachi in 1996 to solve the two main limitations of TN-matrices at the time, those being small viewing angles and low-quality color reproduction

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