Microsoft screen speaker patent exposure: OLED also has tactile feedback

With the popularity of full screens now, the borders of smart phones have become narrower and narrower, and with the front camera and speakers, the placement of sensors has become a key point to limit the further increase in the proportion of screens. Many manufacturers are currently adopting full screens. The screen sounded, ie the practice of the screen speaker to get rid of the restrictions. Now Microsoft's screen speaker patent has also been exposed, the application time is September 2016.

This patent of Microsoft's name is 'DISPLAY STRUCTURE HAVING A VISUAL DISPLAY AND AN AUDIO OUTPUT' (the display structure has visual display and audio output):

Microsoft has found that mobile devices usually require visual display and sound output. Most smart devices use separate speakers to obtain sound output, but the problem is that this requires a certain amount of space inside the mobile device to place components.

As the screen gets larger and the camera body becomes smaller and smaller, there is hardly space inside the camera. There is now a display surface structure, including a deformable transparent surface layer, visible visible display layer, and deformable transparency. The mechanical communication piezoelectric layer of the surface layer, and the drive circuit in electrical communication with the piezoelectric layer, the drive circuit sends a drive signal to the piezoelectric layer, so that the piezoelectric layer deformed transparent surface layer to produce audio output.

Microsoft recommends bonding the OLED screen to the piezoelectric layer with glue, and then generating sound through the vibration stack, and pointing out that when the user touches the screen, it can also be used to generate tactile feedback.