Touch, handwriting and fingerprint sensor with elastomeric spacer layer

a fingerprint sensor and elastomeric technology, applied in the field of display devices, can solve the problems of increasing complexity and cost of modules, requiring costly glass-to-glass bonding solutions, and adding thickness to each layer of the devi

Inactive Publication Date: 2012-04-19
SNAPTRACK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The increased use of touch screens in handheld devices causes increased complexity and cost for modules that now include the display, the touch panel and a cover glass.
Each layer in the device adds thickness and requires costly glass-to-glass bonding solutions for attachment to the neighboring substrates.
These problems can be further exacerbated for reflective displays when a frontlight also needs to be integrated, adding to the thickness and cost of the module.

Method used

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  • Touch, handwriting and fingerprint sensor with elastomeric spacer layer
  • Touch, handwriting and fingerprint sensor with elastomeric spacer layer
  • Touch, handwriting and fingerprint sensor with elastomeric spacer layer

Examples

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Embodiment Construction

[0065]The following description is directed to certain implementations for the purposes of describing the innovative aspects of this disclosure. However, a person having ordinary skill in the art will readily recognize that the teachings herein can be applied in a multitude of different ways. The described implementations may be implemented in any device or system that can be configured to display an image, whether in motion (e.g., video) or stationary (e.g., still image), and whether textual, graphical or pictorial. More particularly, it is contemplated that the described implementations may be included in or associated with a variety of electronic devices such as, but not limited to: mobile telephones, multimedia Internet enabled cellular telephones, mobile television receivers, wireless devices, smartphones, Bluetooth® devices, personal data assistants (PDAs), wireless electronic mail receivers, hand-held or portable computers, netbooks, notebooks, smartbooks, tablets, printers, ...

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Abstract

Use of a compliant, elastomeric layer between upper and lower substrates of the combination sensor can increase the sensitivity to applied pressure or force from a stylus, while increasing the lateral resolution for a given sensel pitch. The elastomeric material may have an index of refraction that is substantially similar to that of the upper and lower substrates. The elastomeric material may include open regions for the inclusion of force-sensitive resistors. With careful selection of the elastomeric and FSR materials, the loss of transmissivity that can accompany air gaps can be minimized.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims priority to U.S. Provisional Patent Application No. 61 / 394,054, entitled “COMBINATION TOUCH, HANDWRITING AND FINGERPRINT SENSOR” (Attorney Docket No. QUALP045P / 102908P1) and filed on Oct. 18, 2010, which is hereby incorporated by reference and for all purposes. This application is related to U.S. patent application Ser. No. ______, entitled “COMBINATION TOUCH, HANDWRITING AND FINGERPRINT SENSOR” (Attorney Docket No. QUALP045A / 102908U1) and filed on Oct. 11, 2011, to U.S. patent application Ser. No. ______, entitled “FABRICATION OF TOUCH, HANDWRITING AND FINGERPRINT SENSOR” (Attorney Docket No. QUALP045B / 102908U2) and filed on Oct. 11, 2011, to U.S. patent application Ser. No. ______, entitled “TOUCH SENSOR WITH FORCE-ACTUATED SWITCHED CAPACITOR” (Attorney Docket No. QUALP045D / 102908U4) and filed on Oct. 11, 2011, to U.S. patent application Ser. No. ______, entitled “WRAPAROUND ASSEMBLY FOR COMBINATION TOUCH, HANDWR...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): G09G5/00H03K17/96G06T1/00
CPCG02B26/0833G06F3/03547G06F3/044G06F3/045G06F21/32Y10T29/49124G06F2203/04103G06F2203/04106G06K9/0002Y10T156/10G06F21/83G06F3/0447G06F3/0446G06F3/04144G06F3/04146G06F3/04166G06V40/1306G06F3/041
Inventor BUCHAN, NICHOLAS IANGANAPATHI, SRINIVASAN KODAGANALLURPETERSEN, KURT EDWARD
Owner SNAPTRACK
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