crwdns2934243:0crwdne2934243:0 oldturkey03 crwdns2934247:0crwdne2934247:0

crwdns2947189:0crwdne2947189:0:

Why white dots appear after replacing the polarizer?

crwdns2934249:0crwdne2934249:0:

Hi everyone, I've a question for everyone that refurbish LCDs as a living.

When I refurbish iphone's LCDs I always remove the polarizer to speed things up, I clean very well the LCD to make sure there's no dust or streaks on it and then I apply a new polarizer film.

When I test the phone everything works great except for the fact that 9 times out of 10 I see very small white dots on the screen (you see 'em very well when you have a black image to see).

I read on the internet that small particles of dust "block" the light coming from the backlight and so you see a white dot (the same you'll see with no polarizer on the LCD but much smaller of course).

Now the question is: is there a way to avoid having this issue?

I know in China sell a dust free room to laminate polarizer and OCA films on the LCDs but I think paying more than 500USD for a simple metal bench with a fan spinning with a tent surrounding you is a ripoff.

Any suggestions?

Using compressed air did not help.

Thanks in advance

Roberto

crwdns2866306:0crwdne2866306:0:

iPhone 5s

crwdns2915684:0crwdne2915684:0:

open

crwdns2934251:0crwdne2934251:0:

crwdns2934241:0crwdne2934241:0 Roberto Silvestri

crwdns2947189:0crwdne2947189:0:

Why white dots appear after replacing the polarizer?

crwdns2934249:0crwdne2934249:0:

Hi everyone, I've a question for everyone that refurbish LCDs as a living.

When I refurbish iphone's LCDs I always remove the polarizer to speed things up, I clean very well the LCD to make sure there's no dust or streaks on it and then I apply a new polarizer film.

When I test the phone everything works great except for the fact that 9 times out of 10 I see very small white dots on the screen (you see 'em very well when you have a black image to see).

I read on the internet that small particles of dust "block" the light coming from the backlight and so you see a white dot (the same you'll see with no polarizer on the LCD but much smaller of course).

Now the question is: is there a way to avoid having this issue?

I know in China sell a dust free room to laminate polarizer and OCA films on the LCDs but I think paying more than 500USD for a simple metal bench with a fan spinning with a tent surrounding you is a ripoff.

Any suggestions?

Using compressed air did not help.

Thanks in advance

Roberto

crwdns2866306:0crwdne2866306:0:

iPhone 5s

crwdns2915684:0crwdne2915684:0:

open