Input Sensor Reflection Patterns Reduce Sensing Line Visibility

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Solution Overview

Problem

Existing electronic devices face challenges in minimizing the visibility of sensing wires in active regions, which affects display quality and aesthetics, especially as devices with various shapes are developed and the need to optimize sensing electrode arrangements becomes crucial.

Innovation Solution

The electronic device incorporates a display panel with light-emitting regions and an input sensor featuring sensing electrodes, main lines, and reflection patterns arranged between the sensing lines, where the main lines do not overlap the light-emitting regions and the reflection patterns are strategically positioned to reduce visibility by managing light reflection effectively.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If sensing lines are arranged in the active region to enable input sensing, then sensing functionality is achieved, but visibility of the sensing lines increases affecting display quality

Engineering Contradiction:
Improvesensing functionalityVSAvoidvisibility of sensing lines
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

Reflection patterns are introduced as intermediary elements between the sensing lines and the external environment. These reflection patterns manage light interaction to reduce the visibility of sensing lines while preserving their electrical sensing function, effectively mediating between the conflicting requirements of functionality and aesthetics

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The reflection patterns modify the optical properties of the sensing line region by controlling light reflection. This changes the visual appearance of the sensing lines to better match the surrounding display area, reducing their visibility while maintaining their sensing capability

Inventive Principle:
Principle #32Color changes

2Reliability

If main lines are arranged to connect sensing electrodes, then electrical connectivity is achieved, but overlap with light-emitting regions reduces display quality

Engineering Contradiction:
Improveelectrical connectivityVSAvoidoverlap with light-emitting regions
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The main lines are segmented into multiple sections with different extension directions. This segmentation allows the lines to navigate around light-emitting regions, maintaining electrical connectivity while minimizing overlap with the display area and reducing visual interference

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The main lines utilize two-dimensional routing with different extension directions instead of simple linear paths. By changing the dimensional arrangement and using multi-directional routing, the lines achieve connectivity while avoiding overlap with light-emitting regions

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

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

This configuration reduces the visibility of sensing lines, thereby enhancing display quality and minimizing the peripheral non-sensing regions, leading to improved aesthetic and functional performance.

Implementation Method 1

reflection patterns arranged in the line region between the main lines

Methodology Applied
Scientific EffectLight reflection: Reflection

Data Source

PatentUS12156454B2Electronic device
Publication Date: 2024.11.26 SAMSUNG DISPLAY CO LTD
  • US12156454B2 patent drawing
  • US12156454B2 patent drawing
  • US12156454B2 patent drawing

AI summary

Provided is an electronic device including a display panel including an active region, and a peripheral region at one side of the active region, and an input sensor including a sensing region above the active region, a sensing peripheral region above the peripheral region, and a line region above the active region and between the sensing region and the sensing peripheral region, wherein the input sensor includes sensing electrodes arranged in the sensing region, main lines arranged in the line region, and connected to the sensing electrodes, and reflection patterns arranged in the line region between the main lines.