Tencent digital hearing (Eskimo) What kind of display was cool? How does it sound like a floating ball as a pixel? Recently, researchers from Sussex and Bristol University demonstrated this so-called "JOLED" display.
The pixels of this display are actually made of micro-polypropylene balls, which are fixed in midair by ultrasonic waves emitted by the top and bottom speakers in opposite directions. Since each ball has its own independent control speaker, as long as you control the speakers, you can change the direction of movement of the ball, which gives them the ability to act as a screen pixel.
Of course, compared to the high-resolution screens we are familiar with, the 6x7 matrix of pixels on this screen may have some difficulty in displaying images. In fact, it feels more like a floating electronic ink display.
Regardless, JOLED researchers, Sri Ram Subramanian and Deepak Sahoo of the University of Sussex will present their work at the ACM User Interface Software and Technology Symposium next week.
Source: The Engineer