Page 178 - CITS - Electronic Mechanic - TT - 2024

ELECTRONICS MECHANIC - CITS

Introduction of LCD

LCD TV, short for Liquid Crystal Display Television, represents a significant technological advancement in the
realm of home entertainment. Introduced as a modern alternative to traditional cathode ray tube (CRT) televisions,
LCD TVs have transformed the viewing experience with their sleek design, vibrant displays, and energy-efficient
operation.
At its core, an LCD TV employs liquid crystal technology to produce images on its screen. This technology utilizes
a backlight source, typically fluorescent lamps or light-emitting diodes (LEDs), to illuminate the liquid crystal
display panel. The liquid crystals, when subjected to an electric current, twist and align to control the passage of
light, thus forming the images we see on the screen.

One of the most notable features of LCD TVs is their slim profile, which allows for space-saving installation and
integration into modern living spaces. Additionally, LCD TVs offer superior image quality with sharp details, vibrant
colors, and high-resolution displays, making them ideal for watching movies, sports, and gaming.
Moreover, LCD TVs consume less power compared to their CRT counterparts, contributing to energy conservation
and lower utility bills. This energy efficiency, coupled with their long lifespan and reduced heat emissions, has
made LCD TVs a popular choice among consumers seeking both performance and sustainability.
As technology has advanced, LCD TVs have evolved to incorporate various features such as high-definition (HD)
resolution, smart TV capabilities, internet connectivity, and advanced image processing technologies like HDR
(High Dynamic Range) for enhanced contrast and color accuracy.

Construction and working process of an LCD TV

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CITS : E & H - Electronics Mechanic - Lesson 100 - 107