Keyboard charging system recycles light, absorbs ambient light

ChangeBridge: Patent Apps - Power Supply (H02J)

Detected March 26th, 2026

Summary

The USPTO has published a patent application from Dell Products L.P. for a keyboard charging system that recycles illumination passing through the LCD and absorbs ambient light to charge a battery. The application, filed on September 23, 2024, describes a photovoltaic panel integrated into the keyboard.

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What changed

This document is a USPTO patent application (US20260088235A1) for an "Information Handling System Keyboard Charging with Illumination Recycling and Ambient Light." The application, assigned to Dell Products L.P. and filed on September 23, 2024, details a system where a photovoltaic panel over the keyboard's LCD captures light passing through the display and ambient light to generate a current for charging the keyboard's battery.

This is a patent application, not a rule or guidance with immediate compliance obligations. However, it signals potential future technological developments in portable device charging. Companies involved in keyboard manufacturing or portable electronics may wish to monitor the progress of this patent and similar innovations for competitive and strategic planning purposes.

Source document (simplified)

← USPTO Patent Applications

INFORMATION HANDLING SYSTEM KEYBOARD CHARGING WITH ILLUMINATION RECYCLING AND AMBIENT LIGHT

Application US20260088235A1 Kind: A1 Mar 26, 2026

Assignee

Dell Products L.P.

Inventors

Peng Lip Goh, Deeder M. Aurongzeb

Abstract

An information handling system keyboard liquid crystal display (LCD) presents visual images illuminated by light emitting diodes (LEDs) at an underside of the LCD within the keyboard, such as to present function keys or a number pad. A photovoltaic panel placed over the LCD recycles illumination passing through the LCD and also absorbs ambient light to convert the light to a current that is applied to charge a battery of the keyboard.