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iPad Touch Screen Assembly – Something You Must Know
Jun 14th, 2017

The Production Of iPad Touch Screen Assembly

Are you bothered by the insufficient supply of OEM New iPad Touch Screen Assembly? REWA here offers you high quality AAA grade replacement. Integrated supply chain, fully tested glass lens and strict procedures for producing process, all contribute to the outstanding quality and stable supply of our products.

Glass Sampling

All REWA glass lens have to go through tough tests like bending test,drop test, hydrophobic effect test, etc. to ensure the outstanding quality.

iPad Touch Screen Assembly Sample Groups

During glass sampling process, there are three sample groups for comparison.

The Production Of iPad Touch Screen Assembly

Group (A)——REWA AAA Grade

Group (B)——OEM New

Group (C)——Prevail on the Market

1. Bending Test

Run bending test on iPad Touch Screen Assembly groups (A), (B) and (C) respectively.

The Production Of iPad Touch Screen Assemblyr

Max Bending Force Value:

Group (A)——72.86kgf

Group (B)——78.16kgf

Group (C)——30.76kgf

Bending Test Result:

Group (A)——Good

Group (B)——Excellent

Group (C)——Poor

2.Drop Test

Run drop test on iPad Touch Screen Assembly groups (A), (B) and (C) respectively. Each sample goes through three times continuously.

The Production Of iPad Touch Screen Assembly

Max Drop Strength Value:

Group (A)——90cm/90g

Group (B)——90cm/90g

Group (C)——80cm/65g

Drop Test Result:

Group (A)——Excellent

Group (B)——Excellent

Group (C)——Poor

3.Dimension Measurement

The Production Of iPad Touch Screen Assembly

Thickness parameters of iPad Touch Screen Assembly groups (A), (B) and (C) are as following:

Group (A)——0.57mm

Group (B)——0.56mm

Group (C)——0.58mm

4.Hydrophobic Effect Comparison

The Production Of iPad Touch Screen Assembly

Sample Water  Alcohol N-hexane
(A)  good ordinary  ordinary
(B)  excellent  excellent  excellent
(C)  ordinary  poor  poor

5.Light Transmittance Test

Before the test, tear off the protective film and run cosmetic inspection of iPad Touch Screen Assembly groups (A), (B) and (C). After that, run Light Transmittance Test under dimly lit environment.

The Production Of iPad Touch Screen Assembly

Visible light transmittance value of Camera hole (550nm) :

Group (A)——95%

Group (B)——95%

Group (C)——92%

Visible light transmittance value of touch panel Functional area  (550nm):

Group (A)——92%

Group (B)——93%

Group (C)——92%

6.Home Button Alignment

The Production Of iPad Touch Screen Assembly

Install home button for a look——all glass lens fit perfectly well.

Conclusion

Group (A) runs with good performance during all those tests. REWA AAA Grade proves to be qualified for the following assembly producing process.

Digitizer Assembling

1.Touch Panel

Adhere the ACF adhesive to the corresponding position of the touch panel. Then complete bonding the FPC to the corresponding positions of the touch panel respectively.

The Production Of iPad Touch Screen Assembly

After bonding, connect the touch panel to the touch system for function test and run sampling inspection of both defective and non-defective samples of the touch panel with the electron microscope to analyze the bonding effect.

The Production Of iPad Touch Screen Assembly

Once finished, deliver the completed touch panel to the next process via the transfer window.

The Production Of iPad Touch Screen Assembly

2.Roller Dedusting

Use the roller to finish preliminary cleaning of the touch panel.

The Production Of iPad Touch Screen Assembly

3.Glass Cleaning

In the high grade purifying environment, clean each glass lens with the cleaner.

The Production Of iPad Touch Screen Assembly

4.Glass Laminating

In the high grade purifying environment, run re-clean and re-inspection process of glass lens. After that, laminate the touch panel with the glass lens with the help of the semi-automatic laminating machine.

The Production Of iPad Touch Screen Assembly

5.Bubble Removing

Put the touch screen assembly on the tray and place it into the bubble removing machine for 45 minutes. Set the pressure value as 0.6MPa and activate the bubble removing process.

The Production Of iPad Touch Screen Assembly

Once finished, take out the touch screen assembly.

6.Protective Film Attaching

Attach exclusive protective film to the front and back of the touch screen assembly for quality guarantee.

The Production Of iPad Touch Screen Assembly

7.Semi-finished product warehouse-in

Once finished, deliver the semi-finished products to the warehouse.

Related Post

For more details on iPad touch screen assembly producing process  , please go to REWA YouTube channel.

Summary
iPad Touch Screen Assembly - Something You Must Know
Article Name
iPad Touch Screen Assembly - Something You Must Know
Description
Fully tested glass lens and strict procedures for producing process contribute to the outstanding quality of REWA replacement for iPad touch screen assembly.
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REWA Technology
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