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Sony iniziò lo sviluppo del Trinitron per [[Monitor (video)|computer monitor]] alla fine degli anni '70. La domanda fu così alta che vi furono esempi di aziende che rimuovevano i CRT Trinitron dai televisori per creare monitor. In risposta, Sony comiciò lo sviluppo GDM (Graphic Display Monitor) nel 1983, che offriva alta risoluzione e frequenza di refresh elevata. Sony promosse in modo aggressivo i GDM tali da diventare standard di riferimento sul finire degli anni '80. Modelli comuni come l'[[Apple Inc.]] da 13" venduto originariamente con il [[Macintosh II]] nel 1987. Altri utilizzatori furono [[Digital Equipment Corporation]], [[IBM]], [[Silicon Graphics]], [[Sun Microsystems]] e altri ancora. Svilupparono anche una serie più economica, la CDP.<ref name=shist/> Nel maggio 1988 introdussero l'high-end 20 pollici tipo DDM (Data Display Monitor) con risoluzione massima 2.048x2.048 [[pixel]], che fu utilizzato nei sistemi [[FAA]]-[[Advanced Automation System]] per il [[controllo del traffico aereo]].
Questi svilppi significarono che Sony fu pronta ad introdurre il sistema [[HDTV]]. Nell'aprile del 1981 annunciarono il sistema [[Sony HDVS|High Definition Video System]] ([[HDVS]]), sistema basato sul [[Multiple sub-nyquist sampling Encoding system|MUSE]], comprendente videocamera, registratore, monitor Trinitron e TV a proiezione.
These developments meant that Sony was well placed to introduce high-definition televisions (HDTV). In April 1981 they announced the [[Sony HDVS|High Definition Video System]] (HDVS), a suite of [[Multiple sub-nyquist sampling Encoding system|MUSE]] equipment including cameras, recorders, Trinitron monitors and projection TVs.
Sony shippedconsegnò itsil suo 100 millionthmilionesimo Trinitronschermo screennel in Julyluglio 1994, 25 yearsanni afterdopo itl'introduzione hadsul been introducedmercato. NewNuovi usesutilizzi in theambito computerconsumer fielde andprofessional, thecome demand for higher resolution televisions tocomputer-monitor matche theHDTV qualityper oflettori [[DVD]] when(introdotto itnel was1996) introducedincrementarono inle 1996vendite leddi toaltri increased180 sales,milioni deliveringdi anotherunità 180vendute millionfino units inal thetermine nextdella decadeproduzione.<ref>[http://blogs.spectrum.ieee.org/tech_talk/2008/03/sony_pulls_plug_on_historic_tr.html "Sony Pulls Plug on Historic Trinitron TV"], ''IEEE Spectrum Online''</ref><ref name=wallst>[http://www.marketwatch.com/news/story/sony-stop-making-old-style-cathode/story.aspx?guid=%7B097C2A31-1395-41BC-A8B7-6A3A65B27F97%7D "Sony to stop making old-style cathode ray tube TVs"], ''Wall Street Journal MarketWatch', 3 March 2008</ref>
===EndFine ofdel Trinitron===
[[Image:Sony KV-32S42.jpg|thumb|Sony KV-32S42, auno typicaldegli late-modelultimi modelli Trinitron television, manufactured in 2001.]]
[[Image:Sony FD Triniton KV-BZ213N50.jpg|thumb|Sony FD Trinitron flat-screen, CRT a schermo piatto.]]
Il brevetto Sony Trinitron fin' la validità nel 1996, dopo 20 anni. Successivamente costruttori come [[Mitsubishi Electric|Mitsubishi]] (la cui produzione di monitor sono parte di [[NEC Display Solutions]]) furono liberi di usare la tecnologia Trinitron, senza ovviamente poterne usare il marchio. Ad esempio i ''[[Diamondtron]]'' della Mitsubishi.
Sony's patent on the Trinitron display ran out in 1996, after 20 years. After the expiration of Sony's Trinitron patent, manufacturers like [[Mitsubishi Electric|Mitsubishi]] (whose monitor production is now part of [[NEC Display Solutions]]) were free to use the Trinitron design for their own product line without license from Sony although they could not use the Trinitron name. For example, Mitsubishi's are called ''Diamondtron''. To some degree the name Trinitron became a generic term referring to any similar set. At least some Diamondtron CRT faceplates are spherical sectors; reflections of such objects as ceiling light fixtures are reduced in size and do not change shape regardless of where they appear.
Sony respondedrispose withcon thelo schermo piatto [[FD Trinitron]], whichcon usedgestione computerelettronica controlleddel feedbackcannone systems to ensure sharp focus across a flat screenCRT. Initially introduced onIntrodussero theiri 27, 32 ande 36 inchpollici models innel 1998,. theIl newmodello tubesbase wereWEGA offeredsupportava insegnali a variety of resolutions for different uses. The basic WEGA models supported normal 480i signals, bute a larger version offeredanche [[16:9 [[aspect ratio]]s. TheLa technologytecnologia wasfu quicklyvelocemente appliedestesa to the entire Trinitron range, fromda 13 toa 36 inchpollici. High resolution versionsHDTV, Hi-Scan ande Super Fine Pitch, werefurono also producedprodotti. With the introduction of the FD Trinitron, Sony alsocambiò introducedanche alo newstyling industrialdelle style, leaving the charcoal colored sets introducedtelevisioni in the 1980s for a new ''silver styling''.
Sony was not the only company producing flat screen CRTs. Other companies had already introduced high-end brands with flat-screen tubes, likeAnche [[Panasonic's]] [[Tau.]] Manyintrodusse otherschermi companiespiatti entered the market quickly, widely copying the new silver styling as wellHDTV. The FD Trinitron wasnon unable to regain the cachet that the Trinitron brand had previously possessed; in the 2004 Christmas season they increased sales by 5%, but only at the cost ofriuscì a 75% plunge in profits after being forced to lower costs toreplicare competeil insuccesso thecommerciale marketprecedente.<ref>James Brooke and Saul Hansell, [http://www.nytimes.com/2005/03/10/business/worldbusiness/10rivals.html?pagewanted=print&position= "Samsung Is Now What Sony Once Was"], ''The New York Times'', 10 March 2005</ref>
Con l'introduzione di tecnologie come [[plasma]] e [[LCD]], si concentrarono su sistemi "thin". Sony smise di produrre Triniton nel 2004 in Giappone; nel 2007 in USA e Canada, nel resto del mondo, come Cina, India, Sud America continuarono vendite dallo stabilimento di [[Singapore]]. La produzione a Singapore cessò nel marzo 2008.<ref name=wallst/> Due linee di produzione furono riaperte per soddisfare la richiesta di monitor professionali.
At the same time, the introduction of plasma televisions, and then LCD-based ones, led to the high-end market being increasingly focused on the "thin" sets. A series of new experimental systems followed, including the Plasmatron and experiments with [[Organic light-emitting diode]]s and other technologies, but Sony's attempts to introduce a best-of-breed system all failed.
TodayOggi, Sony producesproduce onlysolo LCD televisionscon inla theirlinea BRAVIA line, basedinizialmente con onschermi screensbasati initiallysu fromtecnologia [[Samsung]] ande laterpoi [[Sharp Corporation|Sharp]].<ref>Shu-Ching Jean Chen, [http://www.forbes.com/2008/02/26/sony-sharp-lcd-markets-equity-cx_jc_0226markets08.html "Sony Jilts Samsung For Sharp In LCD Panel Production"], ''Forbes'', 26 February 2008</ref> ▼Sony eventually "threw in the towel" on Triniton, ending production in Japan some time in 2004. In 2007, Sony announced that it would no longer market or sell Trinitrons in the USA or Canada, but continue to sell the Trinitron in China, India, and regions of South America using tubes delivered from their [[Singapore]] plant. Production in Singapore finally ended in March 2008, only months after ending production of their rear-projection systems.<ref name=wallst/> Two lines of the factory were later brought back online to supply the professional market.
▲Today, Sony produces only LCD televisions in their BRAVIA line, based on screens initially from [[Samsung]] and later [[Sharp Corporation|Sharp]].<ref>Shu-Ching Jean Chen, [http://www.forbes.com/2008/02/26/sony-sharp-lcd-markets-equity-cx_jc_0226markets08.html "Sony Jilts Samsung For Sharp In LCD Panel Production"], ''Forbes'', 26 February 2008</ref>
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