Flexview screen "cold warmup" darkness

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own6volvos · #1 Post by **own6volvos** » Thu Jan 18, 2007 2:21 pm

Just curious if this is a normal thing that other people might be seeing. On my T60, the right side of the screen when the laptop is first turned on, or after the LCD turned off and sat for a bit, is dim on the right side then slowly warms up bright. Might be like the side 1/4 of the screen. Doesn't seem to be from a bad bulb, as I believe this screen has 2, and the dimspot spans the entire side. Not like right at the bottom or top. After about 15-20 seconds it "warms" up, and goes like normal.

Is this just the LCD matrix warming up, a cathode warming up, or is there an issue with my screen? I do have my brightness set 3 notches down from max, and if I crank it to max the thing goes fully bright about 400% faster. Makes me think the cathodes just warm up at a really slow and steady rate.

Mugrunty · #2 Post by **Mugrunty** » Thu Jan 18, 2007 11:56 pm

I do believe I have noticed that on mine too. When the screen is off for a while and I wiggle mouse or whatever, it takes a few seconds to get to full brightness. Mine is the whole screen though, not just the left or right side. I always thoght it just took a while to warm up or something, that it wasn't instantaneous. Never bothered me though..

Yup.

christopher_wolf · #3 Post by **christopher_wolf** » Fri Jan 19, 2007 1:01 am

Mugrunty wrote:I do believe I have noticed that on mine too. When the screen is off for a while and I wiggle mouse or whatever, it takes a few seconds to get to full brightness. Mine is the whole screen though, not just the left or right side. I always thoght it just took a while to warm up or something, that it wasn't instantaneous. Never bothered me though.. Yup.

I have seen this on some LCDs after they are turned on from being off, usually by some sort of UI event with the mouse or keyboard, and it can happen to the whole screen or a small part. Although I have never actually seen anything bad come of it or with those screens at all.

dr_st · #4 Post by **dr_st** » Sun Jan 21, 2007 6:51 am

Yeah, same thing here. Takes a few seconds to get to full brightness, but it seems to be evenly spread, not just one side.

pianowizard · #5 Post by **pianowizard** » Sun Jan 21, 2007 7:06 am

own6volvos wrote:On my T60, the right side of the screen when the laptop is first turned on, or after the LCD turned off and sat for a bit, is dim on the right side then slowly warms up bright.

I have noticed the same phenomenon on my Dell Inspiron 6000, but on both the right and left peripheries of the 15.4" widescreen LCD. Is your T60 a widescreen model? I wonder if this "problem" is more pronounced on large widescreens.

WPWoodJr · #6 Post by **WPWoodJr** » Fri Jan 26, 2007 2:28 pm

From my measurements with an XRite monitor calibration puck, I determined that it takes at least 20 minutes for a Flexview screen to warm up to full brightness.

This is probably unrelated to the OP's problem though.

#7 Post by **gator** » Sun Jan 28, 2007 4:08 pm

I see this too on my flexview ... around 20-30 minutes before the display becomes evenly lit.

cxls · #8 Post by **cxls** » Sun Jan 28, 2007 8:42 pm

I've never experienced this on my flexview.

Scratch · #9 Post by **Scratch** » Tue Jan 30, 2007 2:17 pm

I see it on my 15" FV T60p machines and on my PowerBook as well. They appear to balance out fairly quickly, but as as earlier post said they don't reach full "calibrated" brightness for 15-20 minutes depending on ambient temperature.

WPWoodJr · #10 Post by **WPWoodJr** » Thu Feb 01, 2007 9:27 pm

cxls wrote:I've never experienced this on my flexview.

It warms up quite quickly at first then takes longer and longer to reach full brightness. You might not notice it. I measured with a colorimeter.

Flexview screen "cold warmup" darkness

Flexview screen "cold warmup" darkness

Re: Flexview screen "cold warmup" darkness

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