Browse Definitions :
Definition

LED TV (LED-backlight LCD television)

LED TV is a type of LCD television that uses light-emitting diodes (LEDs) to backlight the display instead of the cold cathode fluorescent lights (CCFLs) used in standard LCD televisions. LED TVs are more formally known as LED-backlight LCD television.

An LED is a semiconductor device that emits visible light when an electric current passes through it. The light is not particularly bright, but in most LEDs it is monochromatic, occurring at a single wavelength. In comparison with fluorescent lights, LEDs have significantly lower power requirements and convert power to light more efficiently so that less is lost as heat and focus it more precisely so that there is less light leakage, which can cause fuzziness. An LED also lasts much longer than most other lighting technologies.

There are three different LED technologies used. The most commonly used of the three is edge-lit LED, in which white LEDs are situated around the edge of the screen and a diffusion panel employed to illuminate the display evenly. Edge-lit LED displays can be very thin. Another type is dynamic RGB LED, which are placed behind the panel. RGB LEDs make it possible to target areas for dimming more precisely, which in turn leads to truer reproduction of blacks and whites. In the third type of display, full-array LED, LEDs are positioned behind the panel similarly to the way they are with RGB LED displays but there is no capacity for localized dimming.

Quantum dot-based LED displays, in the research stage, are expected to enable LED TVs that will rival plasma for picture quality, and possibly even OLED. 

Vendors of LED TVs include Kogan, LG, Panasonic, Philips, ProScan, Samsung, Toshiba and Vizio.

Pros: Use less power and produce less heat than plasma or other LCD TVs. RGB LED: Brighter, sharper display and better contrast ratio than other LCD TVs. Edge-lit LED: Thinner format.

Cons: More expensive than plasma or other LCD TVs.

This was last updated in March 2011

Join the conversation

2 comments

Send me notifications when other members comment.

Please create a username to comment.

pls led meanig sms
Cancel
lcd means
Cancel

-ADS BY GOOGLE

File Extensions and File Formats

Powered by:

SearchCompliance

  • smart contract

    A smart contract, also known as a cryptocontract, is a computer program that directly controls the transfer of digital currencies...

  • risk map (risk heat map)

    A risk map, also known as a risk heat map, is a data visualization tool for communicating specific risks an organization faces. A...

  • internal audit (IA)

    An internal audit (IA) is an organizational initiative to monitor and analyze its own business operations in order to determine ...

SearchSecurity

SearchHealthIT

  • Health IT (health information technology)

    Health IT (health information technology) is the area of IT involving the design, development, creation, use and maintenance of ...

  • fee-for-service (FFS)

    Fee-for-service (FFS) is a payment model in which doctors, hospitals, and medical practices charge separately for each service ...

  • biomedical informatics

    Biomedical informatics is the branch of health informatics that uses data to help clinicians, researchers and scientists improve ...

SearchDisasterRecovery

  • risk mitigation

    Risk mitigation is a strategy to prepare for and lessen the effects of threats faced by a data center.

  • ransomware recovery

    Ransomware recovery is the process of resuming options following a cyberattack that demands payment in exchange for unlocking ...

  • natural disaster recovery

    Natural disaster recovery is the process of recovering data and resuming business operations following a natural disaster.

SearchStorage

  • RAID 5

    RAID 5 is a redundant array of independent disks configuration that uses disk striping with parity.

  • non-volatile storage (NVS)

    Non-volatile storage (NVS) is a broad collection of technologies and devices that do not require a continuous power supply to ...

  • petabyte

    A petabyte is a measure of memory or data storage capacity that is equal to 2 to the 50th power of bytes.

Close