Originally Posted by hoffo
Had production of high quality HD CRTs continued we would likely have seen 1080p capable sets. This was technically possible even in the early 2000s but cost / complexity was always the issue. Only the GDM-FW900 and a few other CRT computer monitors are capable of 1080p + resolutions in a CRT design. I think CRT projectors could be made to display very high resolutions also. I do not believe we maxed out the capabilities of CRT displays, especially when the focus was always on cost cutting rather than improving resolution or allowing for multi-scan capabilities in a consumer level unit. Think how cool it would be to have a HD CRT that could display 480p, 720p, and 1080p all progressively (not converting 720p to 1080i like current units do).
The CRT technology was mature enough to produce a 2400 lpi resolution way back in the early 90's. The electron beam technology that is used to write the smallest semiconductor chips and master images is as small a 20 nanometers, and an equivalent of 80,000 lpi and scan at a rate of 100Mhz.
Let's not confuse format with resolution. Interlaced or 1080i is a format that provides inter-pixels visual information that fills gaps between larger pixels on a 720 pixel display, and 1080p is a progressive scaned image that overlaps larger pixel arrayed screens. Each format is intended to produce better sharper, more fine detail imagery, and provides 'virtual' resolution with the use of software to extrapolate a lower resolution screen array that is fixed in pixel resolution. In an LCD, LED or plasma a screen, this formating is necessary because the pixel size is in most cases too large to have that many pixels.
Someday the semiconductor and photonics technology that exists today will catch up and be able to be used in todays consumer market, but we're a long way from that. In terms of scaling, it would be hard pressed to achieve 10,000 lpi absolute resolution from LED, LCD or Plasma, ever.
A CRT is flexible, with an ability to vary the beam size and scan rate, and in good high end commercial and labroatory CRT's the resolutions are far better than 5000 lpi today.
A modern consumer grade HD CRT that uses the interlaced or progressive HDTV formats are not bothered by the interlacing or progressive restraints on resolution that LCD, LED, and Plasma TV's have, they actually have the ability to tune the beam and display real 1080 x 1920 lpi resolution (or better!)
I own two CRT 16:9 HDTV's a 34" Zenith C34W37 (bought in Christmas 2004) and Samsung 30" Slim Line (bought in Sept 2008). Both sets have absolute 1080 resolution when using HDTV input signals, and can automatically adjust to any signal format, 480p, 720p, 1080i/p and have HDMI inputs like any modern flat panel TV. The Zentih has some beautiful picture resolution when using the DVI input and a PC with HD graphics card, gets stunning 2400 dpi resolution. Even sitting at 12' away the Zenith has more visulal imagery than the best Plasma HDTV twice the size.
CRT's are way ahead of the other technologies, and most people don't realize it is a manufacurer's ploy to get us to by flat panel TV's because if the CRT technology that exists today got into the consumer market the public would be amazed and feel they were dupped.