Mary Lou Jepsen's Presentation from Books in Browsers 2011 held at the Internet Archive in San Francisco.

1. People of the Screen*
Mary Lou Jepsen
Pixel Qi Corporation
Books in Browsers, Internet Archive, San Francisco, 2011
www.pixelqi.com
*A phrase describing us, today, by Kevin Kelly :
From the Books in Browsers Conference, Internet Archive, San Francisco October 28 2011
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2. The future of reading is screens
The future of screens is reading
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3. Long Form Reading Needs Better Screens
64-90% of users after prolonged screen use experience: (multiple studies)
Blurred Vision Headaches
Dry Eye Ocular Discomfort
Eye strain Double Vision
Why: what are the main reasons?
Contrast Ratio Type of screen
Lighting/Glare
Resolution
(Environment)
Layout - interactivity
First text from Rosenfield, 2011: http://www.ncbi.nlm.nih.gov/pubmed/21480937
Second, italicized text from http://www.eyeprotectorpro.com/rsirepetitive-strain-injury-explained-eyeprotectorpro/
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4. www.pixelqi.com 11/8/2011 4

5. How our eyes scan a page
Paper Screen
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6. 50% of all webpages are viewed for less than 10 seconds
25% of all webpages are viewed for less than 4 seconds
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7. How we Read… Fast and Slow
Average reading time for 10+ page academic paper
– Printed paper: (slow, careful reading)
• 22-45 minutes (Academics, over all disciplines)
– On line: (mostly scanning despite claims)
• 74 seconds (Academics, all disciplines)
• 100 seconds (Students, all disciplines)
• 55 seconds (Academics, computer science field)
Desirable:
Scanning and long-form reading on same screen!
(without eyestrain)
from: http://www.slideshare.net/randyconnolly/whats-wrong-with-online-reading
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8. Readability and Resolution
Doubling resolution boosts
reading speed by at least 50%
250 ppi/8bit
Comparative resolutions 200ppi/8bit
– Pixel Qi screen:
Up to 300 ppi/8 bit in greyscale (BW mode) 150 ppi/8bit
– Electrophoretics
~166 ppi/4 bit 100 ppi
– Standard 10” LCD /8bit
~75dpi/8bit
--------
– Paper
~600-1200-2400 ppi/1bit
( ~effective >>300ppi at 8bit for text
because of halftoning, other differences in
print tech.)
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9. And it gets worse in Chinese
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10. Margins: printed paper books 50%
Typical printed paper book
100%
50%
The text here fails to use 86% of the
screen real estate….
A plea …. please do better!
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11. Readability: contrast
Pixel Qi
• Contrast ratios HIGH
CONTRAST
(higher is better)
LOW
• character size CONTRAST
(larger is better)
• Both impact text
search speed (and
reading speed)
Eink
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12. • There are plenty of studies that show no difference between the legibility of serif and sans
serif typefaces ( Tinker, 1932 ; Zachrisson, 1965 ; Bernard et al., 2001 ; Tullis et al., 1995 ; De
Lange et al., 1993 ; Moriarty & Scheiner, 1984 ; Poulton, 1965 ; Coghill, 1980) ).
• There are some high profile studies which claim to show the superiority of serif typefaces (
Robinson et al., 1983 ; Burt, 1959 ; Weildon, 1995 ) but these have been soundly criticized on
points of methodology. ( Lund, 1997, 1998, 1999 ).
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13. Most Important Low Eyestrain Reading:
A well lighted place with a glare free screen
1. Glare*: causes eyestrain – shiny screens are bad for reading
2. Turn on the Lights*: light around the screen should approximate the
brightness of the screen, or eyestrain also results
* From, for example: The Legibility of Print by Miles Tinker
(an out of print book that is perhaps best comprehensive study of legibility of print – called “Hygienic Vision”)
In Other Words: you should have the lights on when working on your device, but
that creates glare on most devices which also results in eyestrain.
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14. Pixel Qi is the only computer screen
that gives glare free reading in well lighted places
The glare makes all but the Pixel Qi screen unreadable
No ‘Photoshop’
or other image
manipulation
software or
techniques have
been used.
Pixel Qi Screen Matte Screen (AG) Glare Screen
Visibility Excellent Low, hard to read Low, hard to read
Power Low High (5X higher than PQ High (5X higher than PQ)
Well lighted places are the best for reading, but only the Pixel Qi screen
is comfortably readable in such an environment.
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15. Rapid adoption of new display technologies?
Src: Displaysearch
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16. Another Way: One Laptop per Child
Development: 6 months (screen)
Shipped: >3M units
New Functionalities:
– sunlight readable
– high resolution
– low power
– screen enables low power
management system
– In lowest cost, lowest power,
greenest laptop ever made
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17. Pixel Qi: Delivering epaper with color and video
www.pixelqi.com
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18. An example, real, Pixel Qi screen user
“One of the worst problems I was having with
my old screen was dry eyes. It was getting so
bad that I was having to use eye drops every
20 minutes. Also I was waking up several
times at night and having to use eye drops.
Since using the PixelQi the problem is 80%
better.
The other problem was that my eyes were
getting really sore from the glare of my
conventional screen.
This has stopped”
A Happy Pixel Qi Screen User.
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19. Screens drains batteries quickly,
…. but not Pixel Qi screens
3.5” Cell Phone Tablet with 10” Pixel Qi screen
Display
= 45% of
battery
usage
Display
= 2% of
battery
usage
Pixel Qi – even at 8X the screen area, consumes 20x lower system power
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20. iPad and Pixel Qi – in Sunlight
Conclusion: iPad fails - Only the Pixel Qi screen can be seen
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21. Pixel Qi 7” and 10” screens
Excellent color and video
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22. The future of reading is screens
The future of screens is reading
11/8/2011