TV Screens, diff between lCD and TFT?

chucklebezza

Regular Member
Messages
91
Likes
3
My Satellite Setup
39east and 19e when I want to see F1, using a tm1500ci
My Location
surrey
#1
Yeah anyone knows please, Im confused.
 

2cvbloke

Bulbs need shelter too...
Messages
9,451
Likes
1,713
My Satellite Setup
No satellite stuff for the moment (aside from a 43cm minidish that was on the house already), Samsung SyncMaster T27B550 Smart TV & Monitor, and a few computers...
My Location
Near Pontop Pike, Co. Durham
#2
Erm, they're actually the same thing, TFT is Thin Film Transistor and requires a Liquid Crystal environment to function correctly, so, LCD is Liquid Crystal Display, but this can often refer to anything from the display on your calculator to a 36" TFT TV!!! :D

It's just marketing, as people these days think TFT means a PC monitor...:)
 

Robbo

Super Moderator
Messages
6,424
Likes
5
My Satellite Setup
TM6800HD, TM1000, TM600 Linux,TM2200 motor, Channel Master 1.2m motorised, TD110 dish Meter=Satlook Micro+G2 NIT
My Location
Gravesend,Kent,UK
#3
They are not exactly the same thing. The TFT LCD is an enhancement of the original LCD. The transistors are added to ensure that the LCD elements are switched properly. The original LCD doesn't have the transistors.

The TFT refers to the way the transistors are fabricated, using a thin film of silicon, rather than a crystaline structure grown on wafers.
 

PaulR

Dazed and Confused Admin
Staff member
Messages
15,830
Likes
3,147
My Satellite Setup
-----------See sig-----------
My Location
Wirral, NW UK and Vaucluse, France.
#4
But are there any non-TFT LCD screens manufactured nowadays?
 

2cvbloke

Bulbs need shelter too...
Messages
9,451
Likes
1,713
My Satellite Setup
No satellite stuff for the moment (aside from a 43cm minidish that was on the house already), Samsung SyncMaster T27B550 Smart TV & Monitor, and a few computers...
My Location
Near Pontop Pike, Co. Durham
#5
PaulR said:
But are there any non-TFT LCD screens manufactured nowadays?
Calculator screens? Digital watches? Clocks? :D
 

Robbo

Super Moderator
Messages
6,424
Likes
5
My Satellite Setup
TM6800HD, TM1000, TM600 Linux,TM2200 motor, Channel Master 1.2m motorised, TD110 dish Meter=Satlook Micro+G2 NIT
My Location
Gravesend,Kent,UK
#6
2cvbloke said:
Calculator screens? Digital watches? Clocks? :D
Yes, that sounds about right. With the 7 segment type LCD screens it is possible to drive each element directly, as not many pins are required. Thus image quality does not suffer, and thus no advantage in using the transistors.

RS also do small matrix type LCD displays which I have used in the past. They are for displaying alphanumeric characters.
They are pretty cheap, and image quality is not as important as for a TV for example.
 

PaulR

Dazed and Confused Admin
Staff member
Messages
15,830
Likes
3,147
My Satellite Setup
-----------See sig-----------
My Location
Wirral, NW UK and Vaucluse, France.
#7
2cvbloke said:
Calculator screens? Digital watches? Clocks? :D
True! I wasn't thinking that small though.
 
Top