Apple is exploring a new keyboard design that could eventually replace its butterfly switch MacBook keyboards and finally solve the problem of "sticky" or inconsistently functioning keys.



Issues that Apple has acknowledged can occur with some current MacBook keyboards are widely believed to be caused by dust or other particulates getting lodged in the butterfly mechanism underneath the keycaps, which are shallower than those on previous-generation MacBook and MacBook Pro keyboards with traditional scissor switch mechanisms.

In its 2018 ‌MacBook Pro‌ models, Apple quietly introduced a thin silicone membrane underneath keyboard keys, which is an attempt to solve the issue of dust and crumbs from getting stuck. But a new patent suggests the company is researching a totally new approach to the way keyboards are designed that could eradicate the problem for good.

Published last week by the U.S. Patent and Trademark Office and first spotted by AppleInsider, the patent application called "Computer with keyboard" describes a keyboard that replaces movable keys with a glass sheet that includes raised sections to designate the tactile location of individual keys.

When a raised key section is pressed, the keyboard detects the input pressure for that key and processes as a typical key press. The concept differs from the featureless plain of a virtual onscreen keyboard because the raised sections allow the user to feel where their fingers should rest in relation to the individual keys.

Raised glass key concepts from Apple's patent application

The patent describes how an additional level of tactile feedback could be provided by a raised side wall around individual raised keys that could deform with each press, while an underlying layer could serve to "push" the key back into place.

Meanwhile, key symbols could lie on a separate later underneath the glass panel, which would make it easier to change the layout for different regions, languages, or even applications. The patent also proposes using side sections around the keyboard that could double up as a trackpad.

As expected, the glass keyboard could have the effect of making the keyboard thinner and allowing more room for other components to be housed in the notebook chassis.

Apple has filed patents for keyboards in the past, included one that uses a touchscreen panel similar the Touch Bar, but that extends to the entire keyboard layout, but this is the first patent to emphasize the use of individually raised glass elements that mimic traditional tactile feedback.