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Difference in TFT,TFD and UBC display??? |
andrewkeith5
Joined: Apr 02, 2005
Posts: 293
From: Thame, Oxfordshire
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On 2007-06-03 14:31:11, QVGA wrote:
On 2007-06-03 13:41:58, andrewkeith5 wrote:
technology.
LCD is better than TFT.
isnt TFT a type of LCD?
AFAIK that is just a common misconception. With TFT, each pixel is controlled by between 1 and 4 transistors (hence Thin-Film-Transistor). However, with LCD there are 2 polarising panels, with a thin film of liquid crystal sandwiched inbetween. When voltage is applied to certain areas (pixels) of the polarising panels, the crystal is darkened. A light source then transmits light through the panel, and the darkened crystal partially/mainly blocks the light to produce the colours. Hence why you rarely see LCD on mobile phones. (as far as I know, anyway. Thats my interpretation of what I've read)
I agree with the comparison shots too. It would be good to see the actual differences on small screens considering its usually only larger panels that are compared.
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Siemend C45 > Siemens MT50 > Motorola A835 > Motorola A925 > SE P800 > Nokia 6600 > SE T68i > SE T610i > Ericsson T68 > Nokia 6820 > Nokia 3310 > Sanyo S750 > Nokia 6680 > SE M600i(Broken heap of crap touchscreen) (> SE P1i)
[ This Message was edited by: andrewkeith5 on 2007-06-04 10:00 ] |
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JuanPablo
Joined: May 16, 2007
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Actually TFD screen is as better as TFT. Here some extracts from Mobile review:
1. Review of W610
For the mid-range phone, the company is not planning on going into QVGA-displays just now, which are the attributes of senior models like Sony Ericsson W850i. Even though a 176x220 pixels screen here is not particularly a relic, the handset doesn’t get any benefits from it (for example Nokia 6233 falling considerably shot of the W610i functionality-wise, shows off a much superior display, which equals the odds). Having a diagonal of 1.9 inches (31x40 mm) it shows up to 262 K colors (TFT). The first thing that catches your eyes at the first glance is how big the font size is – bulgy menu items captions is what makes the W610i look different compared to the more advanced models. Reading texts with this handset is a breeze, and the credit here goes to the display itself and its fonts. The screen can accommodate up to 6 text and 3 service lines. Unlike some other offerings, the W610i’s display doesn’t enjoy a protective layer that would guard it from sunlight, however in the sun picture remains visible, even though the colors appear washed out. Maybe they have applied a new finishing technology that makes for better visual experience.
They even said it was TFT 
2. Review of K550
Having a diagonal of 1.9 inches (31x40 mm) the K550i’s display shows up to 262 K colors (TFT). The first thing that catches your eyes at the first glance is how big the font size is – bulgy menu items captions is what makes the K550i look different compared to the more advanced models. Reading texts with this handset is a breeze, and the credit here goes to the display itself and its fonts. The screen can accommodate up to 6 text and 3 service lines. Unlike some other offerings, the K550i’s display doesn’t enjoy a protective layer that would guard it from sunlight, however in the sun picture remains visible, even though the colors appear washed out. Maybe they have applied a new finishing technology that makes for better visual experience.
3. GSM Arena review of K550
The Sony Ericsson K550 display is made using the TFD (thin film diode) technology. It offers TFT-like image quality but consumes far less power as low as the now obsolete STN displays which were used in the first days of the color mobile displays.
So, there's no difference between TFT and TFD. They're even confused with each other. Just check the gsm arena page for K610:
http://www.gsmarena.com/sony_ericsson_k610-1431.php
It says it has a TFT, and in fact it has a TFD 
To sum up, don't make a huge deal about it  |
umerhayat
Joined: Feb 27, 2005
Posts: 285
From: Pakistan
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I think samsung makes the best displays.because when ever when i see a samsung hand set display.colours are very sharp and its very delight ful to use a samsung display.while the SE display are just average
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QVGA
Joined: May 23, 2006
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actually nokia makes the best displays. N80 and E60's displays are nothing short of extraordinary |
umerhayat
Joined: Feb 27, 2005
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Yes man.totally agree.but samsung display seems more vivid,so leaves a better impression.although they do it on expense of excess battery usage.where as nokia displays use less battery.so battery life with a lit display is longer for nokia.what you say?
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QVGA
Joined: May 23, 2006
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no, actually 16million screen consumes a lot of battery. samsung's displays while great are sometimes too "cartoonish" in my opinion. Try turning digital vibrance on in your monitor and thats what i think of samsung displays. |
umerhayat
Joined: Feb 27, 2005
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Yes man.i think nokia needs more power ful battery to support the 16m colours displays.i see the nokia 5300.display is very good.but text fonts are tiny.same is the case with e50 ??
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QVGA
Joined: May 23, 2006
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hmm...yeah i would call them small but they are perfectly legible because of the screen res. |
umerhayat
Joined: Feb 27, 2005
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I do not know other people consider it much or not.but i give great importance to the display of a hand set.when i had p900 and p910.their display are so big but not sharp and bright at all.always look so much dimm.is it same case with m600 and w950??
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QVGA
Joined: May 23, 2006
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M600 and W950 have excellent displays |
umerhayat
Joined: Feb 27, 2005
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You mean are they as sharp,vivid,bright and crisp as are the display of non touch screen hand sets of SE.as for example w810 and w850 ??? Or they dull as compared to non touch screen handset displays
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QVGA
Joined: May 23, 2006
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On 2007-06-04 21:30:25, umerhayat wrote:
You mean are they as sharp,vivid,bright and crisp as are the display of non touch screen hand sets of SE.as for example w810 and w850 ??? Or they dull as compared to non touch screen handset displays
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they are definitly better than W810 due to increased resolution and neck to neck with W850 |
umerhayat
Joined: Feb 27, 2005
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From: Pakistan
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You man.but you telling me on papers and in real time day to day life
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QVGA
Joined: May 23, 2006
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On 2007-06-04 21:45:11, umerhayat wrote:
You man.but you telling me on papers and in real time day to day life
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iss baat ki samajh naheen aye... |
umerhayat
Joined: Feb 27, 2005
Posts: 285
From: Pakistan
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Sorry man,some part of the post just vanished,i meant are you talking just specification wise or you have compared the displays of these handsets in real life your self
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Posted: 2007-06-04 10:58
