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OCA Film – All You Want to Know

OCA Film – All You Want to Know

The visual appearance of OCA Optical Clear Adhesive

The brief introduction to OCA adhesive glue:
1) So far in the cell phone repair and refurbish industry and consumable material market, there are the different type of OCA glues custom made for iPhone, iPad, Samsung, LG, Motorola, Sony flagship models.
2) OCA optical clear adhesive film is also one of the important raw materials for mobile phone touch screen.
3) The OCA Tape is a highly-specialized film that offers excellent clarity, light transmitting and adhesion to a wide variety of transparent substrates. OCA Optical Adhesives are usually applied in transparent applications, such as in smartphone and tablet PC LCD displays, touch panels and other devices requiring an optically clear bond.
4) These OCA Clear Adhesive Films perfectly fit with your device and need no cutting before applying such as LG G2, G3, G4, Motorola Moto G2, G3, G, Sony Z4, Z5, Samsung Galaxy S6, S6 edge, S7, S7 edge and so forth.
5) We highly recommend professional installation. We won’t be responsible for any damages to your cellphone/mobile phone that you may cause during the replacement for your defective phones.
6) Easy to remove with no glue residue by using the special OCA Adhesive Remover.

Next let’s get a more comprehensive understanding and view of the OCA Adhesive Glue in the aspect of dimensions, property and function of different manufacturers which are Mitsubishi OCA and China Made OCA.

OCA Structure

Size Inspection

OCA Type
Mitsubishi 250um Mitsubishi 200um China Made 250um
Whole OCA 0.49mm 0.44mm 0.37mm
release film 1 0.10mm 0.10mm 0.05mm
OCA 0.25mm 0.20mm 0.23mm
release film 2 0.05mm 0.05mm 0.09mm
protective film 0.09mm 0.09mm /


OCA Type Mitsubishi 250um Mitsubishi 200um China Made 250um
Length 107.07±0.25mm 107.07±0.25mm 107.35±0.25mm
width 61.07±0.25mm 61.07±0.25mm 61.14±0.25mm

Visual Inspection
On the whole, China made OCAs sometimes have problems of smudges, dots, excessive glue, air bubbles, creases and so on compared with Mitsubishi OCAs.

Function Test
1) Light Transmittance Test
The value of visible light test should greater than 90 in terms of qualified OCA glue.
6Mitsubishi 250um                                  China Made 250um

2) Release Film Test
Stick the corner of the OCA protective film with easy peel/tear label to see if it can rip off easily. Mitsubishi OCA outperforms China Made in the test.
7China Made 250um                               Mitsubishi 250um

3) Adhesion Test
Stick the OCA Optical Clear Adhesive film to one clean cell phone outer glass lens to test if it has strong stickiness and is easy to tear up after fitting.

4) Laminating Test
In the course of LCD screen display laminating and outer screen glass laminating process we can easily check if the OCA can be easily laminated. There is no obvious difference between Mitsubishi OCA and China Made OCA in the effect of Laminating.

5) Bubble Removing Test
After 10 minutes bubble removing process, check the two type of phone screens. Both the Mitsubishi and China Made OCA are in good condition.

6) Bubble Returning Test
After a period of time, check the OCA to see if it has air bubbles in it. The China Made ones sometimes have small air bubbles on both sides of LCD assembly.
7) Repair Test
Separate the LCD display with the machine, then tear up the OCA glue manually to see if it can be removed easily. Mitsubishi OCA can be torn off completely by hand, while China Made OCA can not.

From the test we can draw a general conclusion: Mitsubishi OCA is better than the China Made ones in term of quality.

Until now, I’m afraid you some understanding about OCA film. If you still have any other questions or are looking for iPhone OCA film, iPhone replacement parts, please feel free to contact us via sales@rewatechnology.com or visit the website at shop.rewa.tech.


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