Paint on micro chip touch screens

• US 11,790,072 B2
• Filed: 07/03/2019
• Issued: 10/17/2023
• Est. Priority Date: 05/30/2017
• Status: Active Grant

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Ashoori, Maryam, Briggs, Benjamin D., Canaperi, Justin A., Clevenger, Lawrence A., Clevenger, Leigh Anne H., Rizzolo, Michael, Skordas, Spyridon
• Primary Examiner(s): Chow, Wing H
• Application Number:
  US16/502,979
• Publication Number:
  US 20190325126A1
• Time in Patent Office: 1,567 Days
• CPC Class Codes: B01L 2300/168 Specific optical properties, e.g. reflective coatings
• CPC Class Codes: G06F 21/35 communicating wirelessly
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• CPC Class Codes: G06F 3/044 by capacitive means
• CPC Class Codes: G06K 19/0723 the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs
• CPC Class Codes: G06K 19/07775 the antenna being on-chip
• CPC Class Codes: G07C 9/00182 operated with unidirectional data transmission between data carrier and locks
• CPC Class Codes: H04B 1/3833 Hand-held transceivers

Abstract

A system for a touch screen interface that includes a coating including a plurality of a touch activated microchips; and a projector for projecting a light image onto the coating that is applied to a touch screen substrate. The system also includes an image calibrator that calibrates touch activated microchips in the coating to features of the light image projected onto the coating. The system further includes a receiver for receiving signal from the touch activated microchips when said feature of the light image is activated.

Claims

1. A method for forming a touch screen comprising:

applying a coating including a binder, solvent, pigment and a plurality of pressure sensitive microchips, each pressure sensitive microchip including a pressure sensitive capacitor on a semiconductor substrate, to a substrate surface for a touch screen;

projecting an image for a touch screen interface on the substrate surface for the touch screen;

calibrating the pressure sensitive microchips to features of the image for the touch screen interface; and

activating one of the features of the image by pressure activating the pressure sensitive microchips that are calibrated to that feature.

2. The method of claim 1, wherein applying the coating comprises spraying a liquid including the plurality of pressure sensitive microchips.

3. The method of claim 1, wherein the coating is a wall covering having the pressure sensitive microchips present therein.

4. The method of claim 1, wherein the pressure sensitive capacitor is configured to change its capacitance in response to a user'"'"'s touch.

5. The method of claim 1, wherein the pressure sensitive microchips further comprise a light sensor.

6. The method of claim 5, wherein calibrating the pressure sensitive microchips to features of the image for the touch screen interface includes projecting a light image to the plurality of the pressure sensitive microchips in the coating, and the light sensor of the pressure sensitive microchips senses alignment objects in the light image for the calibrating the location of the pressure sensitive microchips to the features of the image for the touch screen interface.

7. The method of claim 1, wherein the pressure sensitive microchips include a battery.

8. The method of claim 1, wherein the pressure sensitive microchips are powered by an RF coil backing the coating.

9. The method of claim 1, wherein the pressure activation of the pressure sensitive microchips includes a fingertip touch by a user.