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Question of comparison of the two Flexview screens on T60/T60p

post #1 of 4
6/14/06 at 9:04am
Thread Starter 
Does anyone here know how the difference of the contrast ratios of the two Flexview (giving high-quality wide and deep angle viewing) screens currently offered on Lenovo's T60/T60p series would affect the viewing experience? Or better yet, have you seen both screens, and are you thus able to compare them in general?

The two screens are:

(1) the 15.0" SXGA+ (1400x1050) LG-Philips LP150E05 (A2) offered on the T60, and

(2) the 15.0" UXGA (1600x1200) BOE-HYDIS HV150UX1 offered on the T60p.

They are both matte (non-glossy), and they have the same brightness spec (200 cd/m2), but they have the following contrast ratios:

(1) 400:1, and

(2) 500:1.

Anyone?
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post #2 of 4
6/14/06 at 10:02am
Thread Starter 
Note:

The LG-Philips screen is probably not FFS, a technology that BOE-HYDIS developed, but is definitely at least as good as IPS (In-Plane Switching, developed by Hitachi in 1996). My best guess is that it is TW-IPS (True Wide-IPS), a technology that LG-Philips developed.

The BOE-HYDIS screen is definitely at least FFS (Fringe Field Switching, developed by BOE-HYDIS in 1996). My best guess is that it is AFFS (Advanced FFS, developed by BOE-HYDIS in 2003); see my next post in this thread.

From a website:

"FFS technology has an impressive list of characteristics, including the following:

180 degrees horizontal and vertical viewing angles

High transmittance (optical efficiency)

Absence of any color shift at the edge of the viewing cone

Very high contrast ratio

Low power consumption, especially when compared with IPS

Absence of any pooling (also called "ripple" or "blooming")"
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post #3 of 4
6/14/06 at 10:47am
Thread Starter 
That last quote must have been referring to AFFS.

From BOE's website:

"Advanced Fringe Field Switching (AFFS) technology is BOE's signature TFT-LCD technology which has earned them a contender title in the TFT-LCD market and industry. AFFS-applied LCDs have led the company to its current market standing as the leader in the Tablet PC industry.

AFFS Highlights[:]

1996[:] FFS is patented by BOE HYDIS. It exceeds conventional IPS technology by offering wider
viewing angles and improved transmittance.

2003[:] FFS becomes Advanced FFS (AFFS) with a 180 degree viewing angle and authentic color.

2004[:] .... BOE HYDIS Licenses AFFS technology Patent to Japan's Hitachi Displays."
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post #4 of 4
6/15/06 at 7:12am
Thread Starter 
I just did more editing to try to make things clearer! See above.
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