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Go Back   GSM-Forum > GSM & CDMA Phones Hardware Repair Area > LCD Refurbish

LCD Refurbish All things related to LCD / Screen refurbish and repair

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Old 04-21-2015, 02:24   #16 (permalink)
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I ran across this issue just now where the lcd is showing a yellowish greenish tint on the top right corner.. I believe heat caused the issue but im not positive. I left the phone on overnight and I think it overheated and burned a mark in the lcd.

check this video out with my issue
https://www.youtube.com/watch?v=_FaE...ture=*********
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Old 04-21-2015, 10:19   #17 (permalink)
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how you laying the oca on the glass correctly?
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Old 04-22-2015, 04:28   #18 (permalink)
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Quote:
Originally Posted by cellularman89 View Post
I believe so. The problem I was having was bubbles would come back after an hour or so. But I changed the lamination process from 2 mins to 5 seconds, and I also was not laying the oca on the glass correctly bc I was not using the machine that aids you in laying the oca on the glass correclty. After I laid oca on glass good and changed lamination settings then I got no bubble return.

also another thing to note is after lamination process do not press on glass to try and squeeze out the air bubbles. Let the autoclave do that. I use to press on the glass after lamination to try and squeeze the big bubbles out so the autoclave wouldnt have to remove big bubbles, but I had better sucess rate with no hard pressing
Would you share how to lay the oca on the glass correctly?
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Old 04-22-2015, 19:21   #19 (permalink)
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Hi people. What type of oca film do use? A dont know which one to chose. 175 mitusbishi or 250? for an iphone 4 and 5 lcd repair. I am new in business. I am making an order through aliex******s. And can you tell me if i need vacum laminator or can i just use a roller? Is there really this big difference?
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Old 04-22-2015, 23:45   #20 (permalink)
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Video of lamination flim

Quote:
Originally Posted by fun View Post
Would you share how to lay the oca on the glass correctly?
I will make a video of using the oca film laminator and post it on here tonight
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Old 04-23-2015, 01:51   #21 (permalink)
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here is the video of the oca film lamination process

https://www.youtube.com/watch?v=zeS-eurI7wg
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Old 04-23-2015, 02:23   #22 (permalink)
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Quote:
Originally Posted by jackCJ25PL View Post
Hi people. What type of oca film do use? A dont know which one to chose. 175 mitusbishi or 250? for an iphone 4 and 5 lcd repair. I am new in business. I am making an order through aliex******s. And can you tell me if i need vacum laminator or can i just use a roller? Is there really this big difference?
175 um is for iphone 4

250 um is for iphone 5

reason 175 um is for iphone for is because its used inbetween the glass digitizer and lcd

where as the iphone 5 you cant seperate the digitizer from the lcd so you use the 250 um

understand
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Old 04-23-2015, 21:24   #23 (permalink)
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Bubble problems solutions

Things that could cause bubble problem after autoclave

* make sure autoclave is clean, bc if you dont then dust can get pushed in
* make sure lcd is clean before you put in autoclave.

If dust or dirt or oca residue gets in the autoclave you will have bubble problems.
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Old 04-24-2015, 15:30   #24 (permalink)
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So the problem was generated by dust getting in when installing the OCA sheets?

If so, the problem is not how to use this machinery so dust getting in?

That would be great if so.

Thanks
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Old 04-24-2015, 21:44   #25 (permalink)
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Question Bubbles on corners and edges

Hi,

i am having bubble on the corners and edges of LCD.

My process:
1-) remove the broken glass and clean the LCD. When it is out of glue, i clean again with isopropyl until its perfect clean.
2-) Laminate the OCA on the glass manually
3-) put the glass and OCA on LCD
4-) autoclave for 20 min, 70 psi (7 mpa), 50ēC
The display gets out of the autoclave with bubbles on the corners and edges. Don´t even need to wait. The good news are that no new bubbles appears, even 10 days after the refurbishing.

So, any idea what can i do to eliminate this bubbles?
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Old 04-24-2015, 22:05   #26 (permalink)
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Quote:
Originally Posted by rodrigo_maifer View Post
Hi,

i am having bubble on the corners and edges of LCD.

My process:
1-) remove the broken glass and clean the LCD. When it is out of glue, i clean again with isopropyl until its perfect clean.
2-) Laminate the OCA on the glass manually
3-) put the glass and OCA on LCD
4-) autoclave for 20 min, 70 psi (7 mpa), 50ēC
The display gets out of the autoclave with bubbles on the corners and edges. Don´t even need to wait. The good news are that no new bubbles appears, even 10 days after the refurbishing.

So, any idea what can i do to eliminate this bubbles?
I see in your process your missing a step. your missing the lamination of the glass to the lcd. Maybe you didnt add it

this is what Im talking about
https://www.youtube.com/watch?v=zeS-eurI7wg

Do you add this step?
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Old 04-25-2015, 00:48   #27 (permalink)
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Bubble problems

BUBBLES CAN HAPPEN FOR MANY REASONS!!

1. dust on lcd or dust on the glass that has the oca on it
2. incorrect lamination oca film installation
3. To much time in lamination process
4. autoclave settings are incorrect. ( I choose anywhere from 35-40 temp and that gives me the best results) Also the pressure in the autoclave. I put anywhere from 4-5 mpa. Too much pressure will cause bubbles to return.
5. Cleanness of auto clave and screen before you put it in the autoclave.
__________________________________________________ _____________

TIPS

1. When install glass on lcd make sure you do the installation in one spot. try not to move around because if you do then you put your glass at risk of dust after pulling the protective film.
2. Try to work in a clean environment
3. Prep your machines according to what lcd your trying to refurb. ( I will make a video to show how to prep your machines very soon so you guys know what Im talking about )
4. BE VERY PATIENT!! This type of stuff requires you to be very calm and gentle and not to rush
I
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Old 04-25-2015, 00:56   #28 (permalink)
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NO bubbles



This is a phone that I did a full refurb to.
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Old 04-26-2015, 07:37   #29 (permalink)
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helo any one have the ko Vacuum OCA Lamination Laminating?
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Old 04-26-2015, 18:15   #30 (permalink)
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these machines also danger of bubbles after a few days?
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