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9.6L: Late‐News Paper : Cost‐Effective Ultrathin RPTVs Can Reverse Falling Market Share Relative to FPDs
Author(s) -
Ramachandran Gopal,
Prior Greg
Publication year - 2007
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1889/1.2785239
Subject(s) - brightness , optics , liquid crystal display , computer science , crts , backlight , artificial intelligence , computer graphics (images) , physics
Rear Projection TVs are losing market share to LCD and Plasma TVs due to three major issues: ‐form factor (thin depth, small bezel, and small chin demanded by consumers); ‐cost (acquisition cost relative to LCD and Plasma TVs as well as ownership and maintenance costs such as lamp replacement, power consumption, etc); ‐performance (wide viewing angles, bright displays, saturated colors are desired and display‐related artifacts such as misconvergence, field‐sequential color breakup, color non‐uniformities, and optical aberrations are NOT desired). The objective of this paper is to introduce electronic means to help solve these problems. A geometry correction processor was defined to compensate for: ‐lens distortion and lateral chromatic aberration; ‐misconvergence and misalignment of multi‐panel systems; ‐brightness and color non‐uniformities caused by light collection errors, light modulator deficiencies, vignetting, and dichroic coating dependencies on incident angles. The processor became available in December 2006 and this paper provides some preliminary testing results and concludes by suggesting a 3xLCOS RPTV application with compelling specifications: ‐laser illumination; ‐dimensions of 55″ diagonal by 5″ deep; ‐imperceptible chromatic aberrations and optical distortions; ‐imperceptible color and brightness non‐uniformities; ‐imperceptible misconvergence or misalignment; ‐the possibility to realign and recalibrate easily in the field; ‐same or reduced BOM cost.