I wonder why the media describes the financial assets of our present economy as “toxic”, as if it had a life of its own, victimising mankind with its poisonous value (or lack thereof). Such a contorted “euphemism” suggests that our current “predicament” had nothing to do with human greed, and surely nothing to do with the financial officers. They are victims too, you know. It sure sounds like that to me.
Humans – always in self-righteous denial and deflecting the blame.
LEDs (Light Emitting Diodes) make use of the direct recombination of minority carriers (holes or electrons) to emit photons.
The emissive layer is usually P-type (more holes) substrate because the diffusion length for electrons are longer (meaning larger emmisssion volume) – electrons would be injected into the P-type substrate from the N-type (more electrons) substrate.
OLEDs (Organic Light Emitting Diodes) make use of a film of organic compounds as the emissive electroluminescent layer. This time, the emissive layer is N-type, because in organic semiconductors holes are more mobile than electrons.
Because the organic substrate used can be flexible, we got a flexible LED display.
Advantages
- Because each pixel emits light on it’s own, there is no need for a backlight as in the case of LCDs. Hence there is power -savings.
-OLEDs enable a greater range of colors, gamut, brightness, contrast (both DR and static) and viewing angle than LCDs because OLED pixels directly emit light. OLED pixel colors appear correct and unshifted, even as the viewing angle approaches 90 degrees from normal. LCDs cannot show true black because they use a backlight, while an “off” OLED element produces no light and consumes no power.
Disadvantages
-The biggest technical problem for OLEDs is the limited lifetime of the organic materials. In particular, blue OLEDs historically have had a lifetime of around 14,000 hours (5 years at 8 hours a day) when used for flat-panel displays, which is lower than typical lifetime of LCD, LED or technology—each currently rated for about 60,000 hours, depending on manufacturer and model. Toshiba and Panasonic have come up with a way to solve this problem with a new technology that can double the lifespan of OLED displays, pushing its expected life past that of LCD displays. A metal membrane helps deliver light from polymers in the substrate throughout the glass surface more efficiently than current OLEDs. The result is the same picture quality with half the brightness and a doubling of the screen’s expected life.
Ideas for applications: Perhaps these flexible displays could replace textbooks, since they can withstand bending stress, and their low power consumption makes portability feasible. This means less strain on young schoolgoers.
Sources:
http://en.wikipedia.org/wiki/OLED
I never expected anyone would make a music video in a clean room!
It could have been me put the thorns in your crown
Rooted as I am in a violent ground
How many times have I turned your promise down
Still you pour out your love
Pour out your love
I was a dweller by a dark stream
A crying heart hooked on a dark dream
In my convict soul I saw your love gleam
And you showed me what you’ve done
Jesus, thank-you joyous Son
You entered a life like ours to give us back our own
You wanted us like you, as choosers not clones
You offered up your flesh and death was overthrown
Now salvation is ours,
Salvation is ours
I was a dweller by a dark stream
A crying heart hooked on a dark dream
In my convict soul I saw your love gleam
And you showed me what you’ve done
Jesus, thank-you joyous Son
So I’m walking this prison camp world
I long for a glimpse of the new world unfurled
The chrysalis cracking and moisten winds uncurl
Like in the vision John saw
The vision John saw
I was a dweller by a dark stream
A crying heart hooked on a dark dream
In my convict soul I saw your love gleam
And you showed me what you’ve done
Jesus, thank-you joyous Son
Comment: Again, Bruce Cockburn puts into words & music what I fail to express as I reflected on the past year of 2008 and watched the new year unfurl.
Why do You scatter the bread of truth
in pockets of obscurity
when I hunger for it?
____________________________________________________________________
And I declared that the dead,
who had already died,
are happier than the living,
who are still alive.
But better than both
is he who has not yet been,
who has not seen the evil
that is done under the sun.
~ Ecclesiastes 4 : 2 – 3
Lyrics:
Fascist architecture of my own design
Too long been keeping my love confined
You tore me out of myself alive
Those fingers drawing out blood like sweat
While the magnificent facades crumble and burn
The billion facets of brilliant love
The billion facets of freedom turning in the light
Bloody nose and burning eyes
Raised in laughter to the skies
I’ve been in trouble but I’m ok
Been through the wringer but I’m ok
Walls are falling and I’m ok
Under the mercy and I’m ok
Gonna tell my old lady
Gonna tell my little girl
There isn’t anything in the world
That can lock up my love again
Notes:
1994
“That was when my marriage broke up. And that fact broke a lot of things in me. The image ‘fascist architecture’ came from Italy. It was stuff that was built during Mussolini’s period that was a particular style where the buildings are really larger that life and what is supposed to celebrate the greatness of humanity actually dwarfs humanity. And it makes you feel tiny and helpless next to it. And everybody hates this stuff. It seemed to me a suitable image for the things in ourselves, the structures we build that are built on false expectations or pretenses. The things we pretend to ourselves. And then when some catastrophe comes your way, like a marriage breaking up or some other thing, those things crack and you get glimpses through them, the light comes through them. It’s not a comfortable thing.”
- from “Closer to the Light with Bruce Cockburn” by Paul Zollo, SongTalk, vol.4, issue 2, 1994. Submitted by Rob Caldwell.
Wednesday’s Headlines read:
Sexual abuse by UN peacekeepers
I think Bruce Cockburn’s song accurately describes this human predicament.I shudder at the thought that I’m equally as capable of heinous acts: I know that because of my own darkness.
Burden of the Angel/Beast
From the lying mirror to the movement of stars
Everybody’s looking for who they are
Those who know don’t have the words to tell
And the ones with the words don’t know too well
Chorus:
Could be the famine
Could be the feast
Could be the pusher
Could be the priest
Always ourselves we love the least
That’s the burden of the angel/beast
Birds of paradise — birds of prey
Here tomorrow, gone today
Cross my forehead, cross my palm
Don’t cross me or I’ll do you harm
Could be the famine
Could be the feast
Could be the pusher
Could be the priest
Always ourselves we love the least
That’s the burden of the angel/beast
We go crying, we come laughing
Never understand the time we’re passing
Kill for money, die for love
Whatever was God thinking of?
Could be the famine
Could be the feast
Could be the pusher
Could be the priest
Always ourselves we love the least
That’s the burden of the angel/beast
My last few days in America is glittered with fond memories of nature.
Down peppers the rain from a clear blue sky
Down trickles a tear on a youthful face
Feeling in haste and wondering why
Up struggles the sun from a wounded night
Out venture our hearts from their silent shrouds
Trying to ignite but wondering howWe can laugh and we can cry
And never see the strong hand of love hidden in the shadows
We can dance and we can sigh
And never see the strong hand of love hidden in the shadowsYoung dreamers explode like popped balloons
Some kind of emotional rodeo
Learning too slow and acting too soon
Time marches away like a lost platoon
We gracefully age as we feel the weight
Of loving too late and leaving too soonWe can laugh and we can cry
And never see the strong hand of love hidden in the shadows
We can dance and we can sigh
And never see the strong hand of love hidden in the shadowsWritten by Mark Heard © 1990 Ideola Music
