Quality Control Process

To ensure the highest quality of our products, we implement a strict and consistent QC process on every unit of LCD screens and parts, which covers 3 parts in order: cosmetic inspection, functionality test and assembly test. In every part, the test is divided further into multiple detailed steps following our industry-leading inspection criteria.

Here are how we conduct the quality tests and the criteria we follow in every test.

Cosmetic Inspection

● Check whether the surface of glass lens damaged or off paint, etc.

● Check whether front bezel debonding, damaged, screw hole blocked, etc.

● Check whether flex cable broken or damaged.

● Check whether backlight adhesion normal or not.

● Check hydrophobic effect with water, alcohol, and N-hexane.

Qualified Standard:

1. No scratches, broken and damages.

2. No missing parts, such as: screws, adhesives.

Functional Tests

Functional Tests ( Touch Screen Test )

Tools Needed:

1. LCD and Touch Screen Tester.

2. Build-in test application (for Android phones only).

Qualified Standard:

1. Tester Test Standard: Diagonally draw straight lines on the screen, the lines appear without any malposition, breakage or bend.

2. Application Test Standard: The software indicates as passed.

Functional Tests( Small Parts’ Tests )

Tools Needed:

1. Relevant OEM test modules.

2. Other related devices. Such as: earpiece is required on audio flex test, data cable and charger are required on charging port test, the multimeter is required on tests of loudspeaker, ear speaker and vibrating motor, etc.

Qualified Standard:

1. Module Test Standard : Function as normal.

2. Multimeter Test Standard: Loudspeaker ohmic resistance reaches 6~10 ohmic; ear speaker ohmic resistance reaches 27~32 ohmic; vibrating motor vibrates or rotates after being supplied with 1.5~4.2V DC electricity.

Functional Tests( LCD Display Test )

Tools Needed:

1. LCD and Touch Screen Tester.

2. Build-in test application (for Android phones only).

Qualified Standard:

1. Tester Test Standard: Less than or equal to 2 dead pixels (pixel diameter is less than 0.15mm).

2. Application Test Standard: The software indicate as passed.

Assembly Tests

Tools Needed:

1. Screwdriver.

2. Tweezers.

3. Other related devices, like: RF Test Equipment, NFC Test Device.

Qualified Standard:

1. Work normally on OEM Test Modules.

2. No cosmetic or functional incompatibility on OEM Test Modules.