Light-Transmittable Keypad Structure for Mis-Touch Prevention

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Solution Overview

Problem

Existing keypad structures are prone to mis-touch and damage due to improper key presses and elastic element failures, which hinder smooth switching between live streaming pictures and application programs during live streaming operations.

Innovation Solution

A keypad structure featuring a circuit body with flexible light-transmittable sheet bodies, insulation protruding points, and conductive indium tin circuit layers, allowing selective contact and enabling smooth key presses and resets, integrated with a visual programmable intelligent controller for one-key control and switching.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional elastic elements (scissors switches) are used in keypad structure, then the keypad can achieve basic pressing function, but the key will tilt and cannot move normally when improperly pressed or elastic device is damaged, causing mis-touch and inability to input content

Engineering Contradiction:

Improvekeypad input reliabilityVSAvoidkey pressing smoothness

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The circuit board is divided into separate first and second sheet bodies with independent circuit layers, connected through insulation protruding points. This segmentation allows each sheet to move independently, preventing the tilting problem in traditional integrated keypads and eliminating mis-touch issues when keys are pressed.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Insulation protruding points serve as intermediary elements between the first and second circuit layers. These protruding points maintain selective contact capability while providing isolation, enabling reliable signal transmission without the mechanical instability caused by traditional elastic elements.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Volume of moving object

If circuit layers are placed close together for compact design, then device size is reduced, but mis-touch occurs due to lack of gap between circuit layers

Engineering Contradiction:

Improvekeypad thicknessVSAvoidtouch accuracy

Core Design Contradiction:

Volume of moving objectVSReliability

Solution Approach 1:

Insulation protruding points are strategically positioned at specific locations between circuit layers rather than uniformly distributed. This local insulation approach creates precise gaps only where needed to prevent mis-touch, while maintaining compact overall structure and allowing circuit layers to be closely positioned elsewhere.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS11894202B1Keypad structure and visual programmable intelligent controller with keypad structure

Publication Date: 2024.02.06 SHENZHEN XINZENGCAI CREATIVE ELECTRONICS CO LTD

AI summary

The present disclosure discloses a keypad structure and a visual programmable intelligent controller with a keypad structure, including at least one light-transmittable key, at least one key mounting shell for arranging each key, an elastic element arranged, at an edge of the key and configured to allow the key to move up and down in a reciprocating manner, at least one display device, wherein an image displayed by the display device is watched via the key and a circuit body arranged between the key and the display device to sense an action of the key.