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US 9,959,995 B2Granted
Keyboard backlight system
AssigneeDell Products L.P.
InventorsAndrew P. Tosh, Deeder M. Aurongzeb
Life of this patent
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Abstract
Disclosed systems provide keyboard backlighting from organic light emitting diodes (OLEDs) placed under the keys. A keyboard stack optionally includes a light guide or reflector. A single OLED can illuminate multiple keys through a light guide. OLEDs used for backlighting may be arranged in a strip to illuminate more than one key. OLEDs can be deposited directly to the light guide or reflector, and can include a seal to promote air stability.
Claims20
A method for illuminating a keyboard, the method comprising:
- selectively energizing a first organic light emitting diode in response to boot-up of an information handling system, wherein the first organic light emitting diode is:
- printed to a substrate that is a reflector layer or a light guide layer of a keyboard stack;
- positioned under a first key layer of the keyboard stack;
- and
- configured to primarily illuminate the first key when selectively energized.
2 more elements
A keyboard apparatus comprising:
- a key layer comprising keys for receiving user input;
- a switch layer comprising transducers for converting the user input to electrical signals;
- a first organic light emitting diode layer printed to a light guide layer comprising a first set of organic light emitting diodes for providing light for the key layer;
- the light guide layer including at least one light guide for directing light from the first organic light emitting layer toward the key layer;
- and
- a controller selectively energizing the first organic light emitting diode layer.
3 more elements
An apparatus comprising:
- a first set of keys;
- a first organic light emitting diode comprising a substantially transparent electrode layer, wherein the first organic light emitting diode is arranged to provide substantially white light through a first portion of the set of keys;
- a reflector layer substrate for directing light to the first portion of the set of keys, wherein the first organic light emitting diode is printed on the reflector layer substrate and positioned under the first portion of the set of keys;
- and
- a controller selectively energizing the first organic light emitting diode.
2 more elements
Dependencies are inferred from the claim text.