Unlock instant, AI-driven research and patent intelligence for your innovation.

Backlighting inductive touch buttons

A technology of sensing touch and backlight, which is applied in the field of sensing touch sensor keys or buttons, and can solve the problem of opacity of the deformable metal target layer

Active Publication Date: 2012-12-19
MICROCHIP TECH INC
View PDF5 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem, however, is that the deformable metal target layer is opaque, thus preventing it from being backlit.
The existing public solution for inductive touch sensor design is to make it mechanically extremely thin

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Backlighting inductive touch buttons
  • Backlighting inductive touch buttons
  • Backlighting inductive touch buttons

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] Reference is now made to the drawings, which schematically illustrate details of example embodiments. Like elements in the figures will be designated by the same numerals, and like elements will be designated by the same numerals with different lowercase letter suffixes.

[0020] refer to figure 1 , which is a schematic block diagram of an electronic system having a touch-sensitive keyboard, a touch-sensitive analog front end, and a digital processor according to the teachings of the present invention. A digital processor 106, such as a microprocessor, microcomputer, digital signal processor (DSP), application specific integrated circuit (ASIC), programmable logic array (PLA), etc., is coupled to the sense touch analog front end (AFE) 104 and sense touch The sensor keys 102 are, for example, a matrix of buttons, levers, toggles, targets, handles, and knobs. A typical inductive touch sensor key 102 may include a microchip inductive mTouch TM sensor, its www.microchi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

Backing lighting of induction touch keys is accomplished with a spacer layer surrounding an inductive touch sensor coil and a light source on a substrate, and light transmissive layer having a suspended metal disk proximate to the inductive touch sensor coil. A protective fascia may be placed over the light transmissive layer and spacer layer. When the light transmissive layer is displaced toward the inductive touch sensor coil the impedance value of the inductive touch sensor coil changes and the change is detected. Materials used that are translucent (light transmissive) may be continuous and solid, and opaque materials may have openings therein for transmission of light therethrough.

Description

[0001] Related Patent Applications [0002] This application asserts a patent filed on September 1, 2009 and titled "Backlight Priority to U.S. Provisional Patent Application No. 61 / 238,718, "Backlighting Inductive Touch Buttons," which is hereby incorporated by reference for all purposes. technical field [0003] The present invention relates to inductive touch sensor keys or buttons, and more particularly to the backlighting of such inductive touch sensor keys or buttons. Background technique [0004] Various inductive touch sensor keys or buttons include an inductive sensor on a substrate, a thin layer of non-magnetic spacer on the inductive touch sensor, and a deformable metal target on the thin layer of non-magnetic spacer (metal target) layers (such as keys or buttons). When the deformable metal target layer is depressed, the inductive sensor detects a change in its impedance. Changes in this impedance are detected and used to indicate that the key or button has bee...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H03K17/95H03K17/96
CPCH03K17/96H03K17/952H03K2217/96042H03K2217/96046H03K2217/9655H03K2217/96038H03K17/962
Inventor 斯蒂芬·B·波特基思·柯蒂斯
Owner MICROCHIP TECH INC