Theory; Liquid Crystal Display - LG 47LB1DA 1080p LCD Training Manual

THEORY

This section covers how an LCD Display works.

LIQUID CRYSTAL DISPLAY

A Liquid Crystal Display is composed of a light source
(backlight), a Liquid Crystal Panel, and a driving circuit. We
start with a light source at the back of the panel composed
of thin fluorescent bulbs (CCFLs - Cold Cathode Flouresent
Lamps). This light passes through filters to help create a
uniform light source. Then the light passes through the Liquid
Crystal Panel which is composed of thousands of pixels that
control the flow of light throught the panel to make images.
Driving
Gate Driver IC
Circuit
Inverter
Power Supply
for Video Signal
An LCD panel from a 15" LCD TV.
Directview LCD Training
Data Driver IC
Printed Circuit Board
Pixel Array & Wiring
Reflector
Light Guide
Frame
11
Polarizer
Back Light
TFT & Electrode
Polarizer
CF Panel
Liquid Crystal
TFT Panel
Polarizer
Lamp
Prism
Diffuser
Light Guide
Reflector
Inverter
Diffusers
Prism
Liquid Crystal Panel
THEORY
Liquid Crystals
Color Filters
Polarizer
Top Electrode
Liquid Crystal
Panel
Backlight Unit
Theory