Room Temperature In-Line Optical Testing System for Automotive Displays

It is mainly used for uniformity testing and transmittance testing of automotive LCD displays at room temperature.

1. It is equipped with three testing stations: loading station, measurement station, and unloading station. Depending on the layout of the production line, it can adopt a single-operator mode or dual-operator mode. In single-operator mode, both loading and unloading are completed at the unloading station. Depending on the product, it can perform single-screen testing or dual-screen testing.

2. For production line operations, 3 pairs of through-beam gratings are added to ensure personnel safety. When the gratings are triggered, press the alarm reset button, then press "continue measurement" to resume testing.

3. The barcode scanner is equipped with a flash and buzzer to facilitate scanning by operators.

4. After setup is completed, press the start button with both hands to initiate the test.

5. Additional indicator lights for test results and data upload are added to help operators track product OK/NG status, production output, TT records, and product posting.

System Features

1. Supports testing of regular or irregular-shaped products
2. Fast measurement speed
3. Integration of the machine and testing software: PLC uploads to the specified position
   ➀ The machine's PLC communicates with the optical testing software, integrating the two for automated testing;
   ➁ Machine functions: a. Simultaneous measurement of black and white u% ; b. Separate testing of black and white u% ; c. Transmittance testing ; d. 9-point u% testing
   ➂ If all test items of a product pass, it is automatically posted to the next station; the machine can be freely set to either continue testing other items after any test item fails (NG) or directly stop testing;
   ➃ Software functions can be saved and recalled as needed;
   ➄ Saved test image formats can be uploaded to the specified server, and test data can be uploaded to the specified system;
   ➅ The machine can count hourly production capacity by shift (statistics by week/month).

Software Functions

The current mainstream uniformity testing method for automotive LCD displays is Black Mura.
This standard focuses on two test items:
a. Uniformity of black and white images. Sampling is performed via area scanning with BOX movement.
b. Testing of Black Mura in black images using the relative brightness gradient method.

When using Optics Analysis software, a composite alignment map is automatically generated, with real-time display of position and focus. Following the guidance, simple settings such as threshold/filter size can be completed, and one-click measurement can be initiated by clicking "start".