best led tv 80
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poorman p
I am considering purchasing a flat screen tv and would like to know any flaws in the two and would like to know how each works. PLEASE NO sales pitches or buyers guides, just info on their flaws, benifits, and quality.
Answer
Liquid Crystal Display (LCD)
 ⢠HD resolution from 1280x720 pixels through 1920x1080 pixels in a variety of panel sizes.
 ⢠LCD panel fabrication is a mature technology - now in 7th and 8th generation motherglass production for major fabs.
 ⢠LCDs are transmissive in operation, i.e. liquid-crystals emit no light themselves they simply "modulate" the amount of light passing through them. Essentially liquid-crystals act as shutters to control the amount of light from a (cold cathode fluorescent) backlight. The source of illumination is independent of individual liquid crystal pixels.
 ⢠Randomly-arranged liquid crystals pass light in their normally âoffâ state and block light in âonâ state.
 ⢠Color is produced in direct view, flat-panel LCDs using RGB micro filters and on projectors using a dichroic prism or spinning color wheel (the latter has rapidly fallen into disfavor among manufacturers.)
 ⢠Brightness is 3 to 5 times higher than comparably sized plasma displays; LCD can achieve brightness exceeding 400 nits at full white.
 ⢠Contrast ratio is approximately 1/4 to 1/2 that of plasma displays. Average ANSI contrast ratios measure between 147:1 and 170:1.
 ⢠Typical black level is undesirably high at 1.7 nits (eight times higher than conventional CRTs!) Dimmable backlights help to provide lower black levels and better contrast numbers.
 ⢠Predicted life of backlight is approximately 60,000 hours at 200 nits (not at full power mode)
 ⢠Improved backlight and color performance can be obtained using triluminous LED backlight technology; achievable brightness up to 450 nits and lifespan estimated up to 100,000 hours.
 ⢠LCDs consume less power than similarly sized plasma displays.
 ⢠LCDs weigh less than similarly sized plasma displays.
 ⢠Liquid-crystal response or switching time (LC twist times) is slow for video - between 8 ms and 16 ms; this can cause ghosting or smearing in video images containing fast motion.
 ⢠LCDs have trouble with low-level shadow detail resulting in "crushed" grayscales.
 ⢠Color saturation is inferior to emissive displays though LED backlighting can help.
 ⢠LCDs have higher pixel density than plasma panels.
 ⢠No image burn-in.
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Plasma Display Panel (PDP)
 ⢠Plasma display panels (aka, PDPs) - monitors and TVs - are emissive devices, i.e., each individual pixel emits light. Image brightness is directly proportional to the intensity at which individual pixels are driven.
 ⢠Power consumption is 15-20% more than LCD for a given size.
 ⢠Weight is 20-25% higher than LCD for a given size.
 ⢠Mature technology since early 1960s.
 ⢠Each cell uses mixture of noble gases (neon, argon, etc.)
 ⢠AC discharge in each cell stimulates ultraviolet radiation causing color phosphors to glow and form picture elements; similar in principle to fluorescent tube operation.
 ⢠PDP TVs produce roughly 72 to 299 nits (21 to 87.4 foot-Lamberts) of luminance.
 ⢠Average ANSI contrast ratios measure approximately between 596:1 and 772:1.
 ⢠Typical black level is 0.21 nits (roughly the same as a typical CRT.)
 ⢠Waffle-like Deep Cell pixel structure and improved filters enhance contrast, black level, and luminous efficiency.
 ⢠Predicted life of phosphors is approximately 60,000 hours at 80 nits (not in full power mode.)
 ⢠Image burn-in is a serious concern; therefore PDPs are not an ideal choice for console gaming or computer use. (Note: some models utilize 'picture orbiting' and low power modes to combat image burn-in.)
 ⢠Plasma displays have trouble with high- and low-level shadow detail resulting in false contours.
 ⢠No problems with video containing fast motion; PDPs possess faster pixel switching times (full motion at 60 Hz) - progressive video sources are the best.
 ⢠PDPs consume more power and generate more heat than LCDs; PDPs get noticeably warm.
 ⢠Pixel pitch is rarely less than 0.8mm which requires a larger, more expensive panel to achieve true 1080p.
 ⢠PDPs have wide viewing angles (160 degrees H and V.)
 ⢠PDPs possess greater color saturation and are capable of achieving lower levels of gray.
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Alternatives to LCD and plasma display technology:
Organic Light-emitting Diodes (OLEDs)
 ⢠Self emissive
 ⢠Low voltage
 ⢠Super thin displays
 ⢠Saturated, bright colors
 ⢠High contrast
 ⢠Ultra fast response times for video
 ⢠Very wide viewing angles
Surface-conduction Electron-emitter Displays (SEDs)
 ⢠Super-flat version of a CRT
 ⢠Wide color gamut and bright colors
 ⢠Black level and grayscale performance equivalent to modern CRT
 ⢠High brightness ~300 nits (~87.7 ft-L)
 ⢠Very high contrast ratios
 ⢠Fast response times for video
 ⢠Very wide viewing angles
 ⢠Low power consumption - uses about 30% less power than PDPs.
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How much would it cost to install a Tv and a xbox in your trunk?
ecw_member
I want to install a 6-12in tv in my trunk, and hook up a xbox into it to play it during mardi gras
Answer
Buy a 15" LED tv (they pull about 30W $80) get an xbox which (draws about 170W) and a power inverter. 400w about $30. There would be no cost to install it, just the price you pay for the parts.
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