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UV Light Mobile Computer Sanitization (Keyboard and Touchscreen)

IP.com Disclosure Number: IPCOM000239077D
Publication Date: 2014-Oct-09
Document File: 6 page(s) / 122K

Publishing Venue

The IP.com Prior Art Database


Disclosed is a system that integrates ultraviolet light emitters into a laptop body and utilizes those emitters to sanitize a keyboard.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 35% of the total text.

Page 01 of 6

UV Light Mobile Computer Sanitization (Keyboard and Touchscreen)

When a person types on a computer keyboard, germs spread from the hands to the keyboard and then can infect others that use the same keyboard.

Obvious sanitization methods include the use of sanitization spray or wipes. Current methods of ultraviolet sanitization for a keyboard are not convenient. One method is to use a UV wand that the user needs to manually control; the user is responsible for the cleaning. Another method for ultraviolet sanitization is to place the keyboard in a

separate housing. This is inconvenient and requires additional hardware.

Current products and systems do not integrate ultraviolet light emitters in a laptop for keyboard sanitization. A method is needed to provide a continuous cleaning solution

for a laptop device.

The novel contribution is a system to integrate ultraviolet light emitters into the laptop body and utilize those emitters to sanitize a keyboard. When one of the following conditions is met, short-ranged ultraviolet light is emitted to help sanitize the keyboard of germs: the laptop lid is closed, the user attempts to open the laptop lid, or the user removes the hands from the keyboard. This approach is non-obvious because ultraviolet light sanitization is not commonly used in day-to-day household disinfection. Further, the emitters need to be specially designed to function using low power and only in certain scenarios.

The integrated UV emitters emit ultraviolet C (UV-C) light in order to destroy germs on the keyboard. UV-C light has a wavelength range of 200-280 nanometers with a range of 4.43-12.4 electronvolts. UV-C light is capable of disinfecting while remaining safe for commercial use.

The sanitization process can begin under different scenarios. The clean process may start when the user opens or closes the laptop (using existing technology to detect open/close). To prevent excess light from escaping while the laptop lid is closed, the gap between the lid and base can be minimized. Another scenario may be to begin the

sanitization process when the system detects hand movement.

If the more power-demanding Cold Cathode Fluorescent (CCFL) UV Bulbs are used, then, when no static power source is connected to the laptop, the UV lights do not turn on due to power constraints. If a static power source is connected, then the UV lights turn for five minutes (which is enough time required to disinfect the device). For the use of low power UV-C LED, the disinfection process does not require a static power source. The UV lights are powered by the power source, the same way the device is. Since such low voltages and wattages are consumed by the lights, standard power supplies should power the UV lights, laptop, and additional external components.

The allocation of the UV LEDs can be accomplished with multiple variations, as described below.


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Lid Closed:

Direct-lit LED backlight (Figure 1)

This is the preferred way is t...