Recently I came across couple of interesting patents filed by Microsoft. Find their abstracts below.
Sensor-in-pixel display system with near infrared filter
A display system includes both a cover panel and a display panel. The display panel includes multiple display pixels and multiple sensor elements configured to detect infrared light reflected from an object touching or close to the cover panel. The filter layer is configured to increase rejection of near infrared light reflected from the object prior to detection of the infrared light by the multiple sensor elements. The filter layer can be positioned in different locations, such as between the display panel and the cover panel, within the display panel, or within or on top of the cover panel.
Glow touch feedback for virtual input devices
The claimed subject matter is directed to providing feedback in a touch screen device in response to an actuation of a virtual unit in a virtual input device. Specifically, the claimed subject matter provides a method and system for providing visual feedback in response to an actuation of a virtual key in a virtual keyboard. One embodiment of the claimed subject matter is implemented as a method for providing luminescent feedback in response to an actuation of a virtual key in a virtual keyboard. User input in a virtual keyboard corresponding to a virtual key is received. The corresponding virtual key is actuated and registered in response to the user input, and a luminescent feedback is displayed to the user as confirmation of the actuation of the virtual key.