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CRT LCD Plasma OLED; Static contrast ratio Finite or infinite [citation needed] 150 to 8,100:1 [citation needed] Typically 1,000:1 - 3,000:1, Some models measured up to 20,333:1 [citation needed] "Between 0.0001 and 0.00001 nits" "Sony claims an OLED contrast range of 1,000,000:1." [1] Peak luminosity
A CRT made by LP Displays. LG.Philips Displays was a joint venture created in 2001 by LG Electronics of South Korea and Philips Electronics of the Netherlands in response to the maturing cathode-ray tube (CRT) market. [9] [10] It primarily manufactured CRTs used in traditional television sets. It was the world's largest manufacturer of CRTs ...
The rear of an LG.Philips Displays 14-inch color cathode-ray tube showing its deflection coils and electron guns Braun's original cold-cathode CRT, 1897 Typical 1950s United States monochrome CRT TV Snapshot of a CRT TV showing the line of light being drawn from left to right in a raster pattern Animation of image construction using the ...
The diagonal screen size of a CRT television is limited to about 100 cm (40 in) because of size requirements of the cathode-ray tube, which fires three beams of electrons onto the screen to create a viewable image. A large-screen TV requires a longer tube, making a large-screen CRT TV of about 130 to 200 cm (50 to 80 in) unrealistic.
Modern color rear-projection television had become commercially available in the 1970s, [15] [16] [17] but at that time could not match the image sharpness of a direct-view CRT. Early 2000s CRT projection TV with 1080i HD ready capabilities has an RCA line level input for use of internal speakers as a center channel in a surround sound system.
The Precision CR30, Sencore CR-70 and Jackson 707 are some of the CRT testers that are capable of testing the 7JP4, 3KP4 and other electrostatic deflection CRTs. Since the availability of these CRT testers is very limited, the prices for such testers are steep, so many restorers test these CRT's on a working TV set that used electrostatic CRTs.