Transparent Touch Input Unit for Mobile Terminals
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Solution Overview
Problem
Current mobile terminals lack innovative designs that effectively combine functionality with aesthetic improvements to meet consumer demands for multifunctionality and user experience.
Innovation Solution
A mobile terminal design incorporating a transparent touch input unit with a layered structure, including a transparent keypad, luminous elements, and conductive patterns, allowing for touch-sensitive input and illumination of key regions, which enhances user interaction and visual feedback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a transparent touch input unit with integrated conductive patterns is used, then manufacturing complexity is reduced and aesthetic appearance is improved, but touch sensitivity detection precision may be affected
Solution Approach 1:
The patent combines multiple functions into a single transparent conductive pattern layer: touch detection, illumination, and visual feedback. This integration reduces the number of separate components and manufacturing steps while maintaining functional performance through careful design of the pattern geometry and electrical connections.
Solution Approach 2:
The transparent conductive pattern serves multiple purposes simultaneously: it acts as a touch sensor electrode, provides illumination when activated, creates visual feedback during operation, and maintains aesthetic appearance due to its transparency. This multi-functionality resolves the contradiction by reducing complexity without sacrificing detection precision.
2Illumination intensity
If luminous elements are added to the touch input unit, then visual feedback is improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent merges the illumination function with the existing transparent conductive pattern structure. The same conductive material and electrode geometry used for touch detection also serves as the illumination pathway, eliminating the need for separate light source components and reducing overall device complexity.
Solution Approach 2:
The transparent conductive pattern is designed to perform both touch sensing and illumination functions. By applying voltage across the pattern, it generates both the electrical signal for detection and the optical emission for visual feedback, thereby improving illumination without increasing structural complexity.
3Shape
If gaps between terminal components are minimized, then aesthetic appearance is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent employs transparent flexible films and thin conductive layers that can conform to slight variations in component positioning. The transparency of these materials allows gaps to be less visually prominent, while their flexibility accommodates manufacturing tolerances, thereby improving aesthetic appearance without requiring extremely tight gap control.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution provides a sleek, functional design that minimizes gaps between terminal components, offers intuitive touch input with visual feedback, and simplifies manufacturing by integrating conductive patterns for both touch detection and illumination, thereby improving user experience and manufacturing efficiency.
Implementation Method 1
conductive patterns, which are substantially transparent, overlying respective ones of the key regions and detecting touch inputs on the key regions
Implementation Method 2
luminous elements, disposed at positions that correspond to respective ones of the key regions, and conductive patterns... delivering signals to the luminous elements to illuminate the key regions
Data Source
Figure 1
Figure 2A~2B
Figure 3~4
AI summary
A mobile terminal includes a transparent keypad having a plurality of key regions, a first transparent sheet having first conductive patterns to detect touch inputs on respective ones of the key regions, a plurality of luminous elements aligned with the key regions, and a second transparent sheet having second conductive patterns coupled to respective ones of the luminous elements. The first and second conductive patterns are transparent and the second conductive patterns deliver signals to the luminous elements to light the key regions. The keypad may be mounted on a slider for sliding into and out of a main body of the terminal.