Sharp memory LCD

Log in or register to post comments
Go To Last Post
4 posts / 0 new
Author
Message
ganzziani
ganzziani's picture
Level: Resident
Joined: Fri. Jun 16, 2006
Posts: 638 View posts
Location: Sarasota, FL
#1
Posted by ganzziani: Fri. Nov 22, 2013 - 07:46 PM
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

Anyone here using the ultra low power memory LCDs?

I am using this one: LS013B7DH03
I have some questions:

1) Backlight: The back of the display doesn't pass much light, so using a backlight seems to be difficult. I read on other forums about using a laser engraved light guide, I think they meant about using it on TOP of the display so the light is diffused from the top. Anyone has experience on how to backlight this display?

2) Burn in image: I am applying a pulse on the EXTCOMM signal at 1Hz to do the "polarity inversion across the
panel to keep a latent charge from building up". It seemsto work ok, but when my battery is almost depleted and not much voltage on VDD (about 1.5V), I see a burned in image of the most used pixels on the display. Is this normal? When restoring full voltage, the display look normal.

Any other tips and tricks about using this display would be appreciated!

www.gabotronics.com

Tags:

Learning and Information, General Electronics
Top
gchapman
gchapman's picture
Level: 10k+ Postman
Joined: Tue. Jan 9, 2007
Posts: 11479 View posts
Location: Arlington, Texas, u.S.A.
Posted by gchapman: Fri. Nov 22, 2013 - 09:02 PM
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

ganzziani wrote:
Anyone here using the ultra low power memory LCDs?
There is some activity on these in the Adafruit Industries fora:
SHARP Memory Display Breakout - UPGRADE

"Dare to be naïve." - Buckminster Fuller

Top
sbennett
sbennett's picture
Level: Posting Freak
Joined: Mon. Nov 19, 2001
Posts: 1172 View posts
Location: San Luis Obispo, California
Posted by sbennett: Sat. Nov 23, 2013 - 05:07 AM
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

gchapman's link no longer works, google can find it [search=site:forums.adafruit.com sharp upgrade]

View topic - SHARP Memory Display Breakout - UPGRADE • adafruit ...
forums.adafruit.com › Arduino › Other Arduino products from Adafruit‎
2 days ago - 1 post - ‎1 author
I figured I would post this hear for other people who may want the dark black version of
the Sharp Memory LCD Screen Breakout that Adafruit ...

But both google and gchapman's link result in "The requested topic does not exist."
Google has nothing in cache. The topic seems to have been pulled from the forum…

Top
gchapman
gchapman's picture
Level: 10k+ Postman
Joined: Tue. Jan 9, 2007
Posts: 11479 View posts
Location: Arlington, Texas, u.S.A.
Posted by gchapman: Sat. Nov 23, 2013 - 04:07 PM
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

Darn.
What the post was about was replacing the as-delivered Sharp memory LCD (reflective?) on the break-out with another Sharp memory LCD (transflective?, IIRC more pixels).
Photos were attached to the post and these looked good; the background was out of focus but looked like earth and was outside (daylight, not sunny).

"Dare to be naïve." - Buckminster Fuller

Top