AUO G156HAN04.0 Polarizer Change: Engineering Change Summary
Review the AUO G156HAN04.0 polarizer change, possible differences in reflections when the display is off, and the checks to make before approving a new production lot.
AUO Display Plus issued an engineering change notice for the G156HAN04.0 on May 7, 2024. The change introduced a new polarizer type and supplier because the previous polarizer was reaching end of life. The notice describes a component change within the G156HAN04.0 and states that the product specification is unaffected.
What may look different?
The notice shows that the old and new polarizers can reflect light differently when the display is powered off. The specified surface hardness remains 3H. If the appearance of a powered-off display is part of your acceptance criteria, compare a sample with your approved unit under the same lighting, angle and cover-glass conditions.
When did the change take effect?
The notice lists June to July 2024 as the planned period for a phased production change. To identify the configuration of a specific shipment, ask for confirmation using the actual label and lot information. The notice does not give a universal serial-number cutoff.
What did the evaluation cover?
The notice records a pass in the optical report for five samples and a pass in the accompanying reliability summary. These results describe the samples and test conditions documented in the notice. For your equipment, verify powered-on brightness and uniformity, powered-off appearance, and any project-specific acceptance criteria using the intended assembly.
Does the notice apply to G156HAN04.1?
The notice covers the G156HAN04.0 polarizer change. If you are evaluating the G156HAN04.1 as an alternative, use the separate model comparison to check the backlight voltage, connector and mechanical clearance.
Request a lot or sample review
Send IDT Display a photo of the panel label, lot information if available, your approved configuration and any appearance requirements. If you need to match an earlier lot, specify the reference unit and the conditions under which the displays will be compared.
