REWA Tech

Tag: iphone lcd screen

  • Aftermarket iPhone LCD Screen Visibility Under Sunglasses

    Aftermarket iPhone LCD Screen Visibility Under Sunglasses

    Black screen appeared when your aftermarket iPhone screens under polarized sunglasses? Is this the defect of China-made iPhone screens or some kind of physical issue? How can we deal with black iPhone LCD display under sunglasses? We had a series tests for aftermarket iPhone LCD screen visibility under sunglasses. Let’s check it out today!

  • iPhone Series LCD Screen Sampling Test – REWA LAB

    iPhone Series LCD Screen Sampling Test – REWA LAB

    To ensure the high quality and stable supplying of the iPhone LCD Digitizers, REWA has launched an integrated quality control system to carry out the sampling tests of iPhone screens.

  • iPhone LCD Screen Sampling Test

    iPhone LCD Screen Sampling Test

    To ensure the highest quality of iPhone screens, REWA Technology operates with an integrated quality control system, applying for professional quality assurance from purchase to delivery, and strict testing procedures. REWA iPhone LCD Screen Sampling Test, composed of the following 5 strict testing procedures, ensures qualified suppliers and high-quality products.

    iPhone LCD Screen Sampling Test

    REWA LAB iPhone LCD Screen Sampling Test

    Cosmetic Inspection

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

    Cosmetic Inspection

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

    screw hole blocked

    Check whether the flex cable is broken or damaged.

    Check whether

    Check backlight adhesion normal or not.

    Check backlight adhesion normal

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

    Check hydrophobic

    Function & Display

    Test touch function by pulling up and down, switching page, moving icons.

    Test touch function

    Test 3D Touch function and sensitivity.

    Test 3D Touch function

    Check pure color screen normal or not.

    Check pure color screen normal

    Check whether the screen turns black under polarizer.

    Check whether the screen

    Test Color Coordinates & Brightness with Color Analyzer CA310.

    Test Color Coordinates

    Structure Test

    Measure thickness, width and length.

    Measure thickness

    Check whether LCD metal plate well matched or screw hole well aligned.

    LCD metal plate

    Check screen fitness with iPhone housing after installation.

    Check screen fitness

    Check whether function normal or not after installation.

    whether function normal

    Check whether light leaked or backlight conflicted with LCD

    backlight conflicted with LCD

    Run Touch ID function test.

    Run Touch ID

    Aging Test

    Run Dynamic test (condition: +45℃; playing video for 2Hrs ), check whether display normal or not. After that, run function test again.

    Aging Test

    Run Static Cycle test (condition: -20℃/2Hrs, +55℃55%RH/2Hrs, +55℃/4Hrs), check whether display normal or not.

    Once finished, check backlight adhesion and run another round of function test.

    Run Static Cycle test

    Vibration Test

    Packaging the LCD assembly with a blister box. Then run Electromagnetic Vibration Test (Amplitude: 2mm, Frequency: 50HZ, Time:1H).

    Packaging the LCD assembly

    Once finished, check backlight adhesion and run another round of function test.

    check backlight adhesion

    Test Report

    Those passed all tests would be certified by the test report issued by REWA LAB.

    by REWA LAB

    You can check our iPhone X OLED Screen Total Teardown Analysis video.

  • Producing Process of Tianma LCD Screen Assembly

    Producing Process of Tianma LCD Screen Assembly

    producing process tianma lcd screen assembly of

    Nowadays, with more and more Tianma-made iPhone LCD screen assembly springing up in the market, comparison reports on OEM and China-made are also overwhelming the repair market. The truth is that they do differ from each other, but Tianma-made iPhone LCD screen assembly can also be a good replacement for iPhone OEM screen and Samsung S7 edge glass replacement.Interested in the producing process of high-quality Tianma-made iPhone LCD screen assembly? REWA unveils the industrial secret for you.

    In-depth study of engineers contributes to the development of compatible LCD panel driver and further more the manufacture scheme. According to the scheme, Panel factories (TM/BOE/AUO/IVO etc.) will then arrange production and marketing of LCM to the laminating factories. This blog covers the laminating and assembling procedure of TM LCD screen assembly just after the LCM status.

    Workshop Introduction

    The producing process of Tianma-made iPhone LCD screen assembly is completed with the cooperation of different workshops like IPQC Workshop, Assembling Workshop and Laminating Clean Room etc.. Accompanied with respective yet consecutive procedures like IPQC, touch screen laminating, the bubble removing, FPC bonding and bezel assembling etc..

    producing process tianma lcd screen assembly

    IPQC

    Run display test on LCD modules to avoid quality defects like screen lines and flickering.

    producing process tianma lcd screen assembly 2

    Run cosmetic inspection on touch screen assemblies to avoid quality defects like scratch and dust.

    producing process tianma lcd screen assembly 3

    After that, finish OCA laminating process.

    Auto Laminating

    Auto LCD Screen Laminating Machine

    producing process tianma lcd screen assembly 4

    Put touch screen assemblies and LCD modules on corresponding windows respectively. Optical aligning goes first, then the Laminating platform for laminating process.

    All laminated LCD assemblies are transferred and then placed on the dedicated trays.

    Bubble Removing

    Put all LCD assembly loaded trays into the bubble removing the machine and place the trays crossly for best performance. Set relative parameter and then activate the machine.

    Once bubble removing process finished, take out the trays.

    FPC Bonding

    The First thing during this process is to attach protective films to the LCD assemblies to avoid damage during the processing. Then attach protective gum paper, ACF glue and complete heat curing.

    Finish flex cable aligning under the light and complete FOF bonding with the Pulse Flex Cable Bonding Machine.

    Once finished, move on to backlight flex cable soldering and once all has been done, run touch function test.

    Bezel Preparation

    Run cosmetic inspection of the bezel first. Then clean the sticking-joint with the Plasma cleaning machine for better adhering and complete fluid dispensing process with the Fluid Dispensing machine.

    Bezel Assembling

    Assemble the processed LCD displays with bezels by aligning strictly. Then place all assembled LCD displays into the dedicated laminating mold and complete bezel assembling with the Bezel Assemble Machine.

    Clean glue residue after the bezel assembling process.

    Components Assembling & Finish-up

    Attach new protective film to the LCD assembly first. Then adhere the camera support and other components to the LCD assembly.

    Run the final test of 3D touch, touch function and display to ensure the quality.

    Attach protective gum paper, seal QC PASS stamp and clean the screen.

  • Production of Aftermarket China-made iPhone LCD Screen

    Production of Aftermarket China-made iPhone LCD Screen

    This video exclusively unveils the secrets of the production process of China-made iPhone LCD screen Assembly replacements. Taking Tianma LCD screen as an example, REWA here presents how China factories deal with the laminating and assembling procedure of TM LCD screen assembly just after the LCM status.