New industry trends and reports point to the future of augmented reality and virtual reality devices (AR VR MR, collectively known as XR) that rely heavily on microLED and microoled display technologies. Many of these devices already use microdisplays (often defined as screens less than 2 inches diagonally in length), exacerbating the proliferation of "miniature" elements.
To provide a high-quality visual user experience in XR headsets, the size and performance characteristics of MicroLED and MicroOLED are an attractive option for hardware designers. In an AR VR system, a key specification is pixels per degree (PPD), which is a factor in display resolution and field of view (FOV). If the PPD is not high enough, the image may not be sharp enough, or problems such as the screen door effect may occur. MicroLED and MicroOLED displays, with their tiny, dense pixels, ensure high PPDs and meet the requirements of VR and AR devices
The differences between VR, AR, and MR devices point to other reasons why MicroOLED and MicroLED technologies are beneficial for XR. For example, microLEDs typically offer higher brightness (brightness) to meet the need for see-through AR, where an image is overlaid on top of the background environment to present to the wearer. Images and characters need to have enough brightness and contrast to be clearly visible even under daylight ambient lighting.
However, when it comes to all these miniature items, traditional display inspection techniques are no longer sufficient. Defects and non-uniformities (known as mura) need to be accurately identified and measured during the manufacturing process before correction factors can be applied. This correction process, called demura, helps to improve the quality of your device's display so that it meets brand standards and can be discarded instead of being discarded.