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0 pointsdylan6044y ago0 comments

CRTS couldn't really show "black". It was more of a dull gray. That's what made the plasma display so amazing with it's true black. LEDs and now OLED are the same except they do not ahve the mass of a dying star.

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chrisseaton4y ago

That's not how CRT physics works.

The screen is charged. That charge causes burn in. The best way to not burn in, short of turning the screen off, is to charge the screen as little as possible. The least charge you can give it is a black signal, which means least burn in.

dylan604OP4y ago

>The least charge you can give it is a black signal

The point is that you could not give it no signal without it being off. LEDs can do this. The closest to black from a CRT I saw was from Sony's Professional Studio reference monitors that were $32K for a 32" screen. When Sony brought out their OLED reference monitors, they did a side-by-side comparisson of their best CRT, an LCD and the new OLED. All 3 were receiving the same signal, and when the demo started black, the CRT was clearly "on" but the OLED looked "off" with the LCD in between. Just about the time I'm thinking to myself that the CRT brightness was turned up, they switched to reference bars and all were calibrated correctly.

Arguing that CRTs could display true black is arguing against history.

chrisseaton4y ago

I think you've got the wrong end of the discussion, there.

If you can't or don't want to turn you CRT off... then what's the next best thing for avoiding burn-in?

Send it a black signal, or send it a bright signal?

It's the black signal, because it charges the screen less. Charging the screen is what causes burn in. If you charge it less you get less burn in.

> Arguing that CRTs could display true black

Nobody argued this. Where did you think you read this? I said 'show a black image'. Send it a black signal. It's the minimum signal you can send it without turning it off.

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chrisseaton4y ago

That's not how CRT physics works.

dylan604OP4y ago

>The least charge you can give it is a black signal

Arguing that CRTs could display true black is arguing against history.

chrisseaton4y ago

I think you've got the wrong end of the discussion, there.

If you can't or don't want to turn you CRT off... then what's the next best thing for avoiding burn-in?

Send it a black signal, or send it a bright signal?

It's the black signal, because it charges the screen less. Charging the screen is what causes burn in. If you charge it less you get less burn in.

> Arguing that CRTs could display true black

Nobody argued this. Where did you think you read this? I said 'show a black image'. Send it a black signal. It's the minimum signal you can send it without turning it off.

1 more reply

j / k navigate · click thread line to collapse