Shield Electrode Layout for Noise-Resistant Sensing Lines
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Solution Overview
Problem
As the degree of integration of electronic elements increases in multimedia devices, signal lines overlap, leading to electrical signal interference and noise generation, which affects the sensitivity and reliability of sensing units.
Innovation Solution
The implementation of a shield electrode on the same layer as the light emitting element, extending from a first base area to a second base area, overlaps sensing lines to prevent noise generation, and is integrated with the sensing unit to maintain iso-resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If signal lines are arranged to overlap within a limited area to increase integration, then device integration increases, but electrical signal interference and noise generation occur
Solution Approach 1:
A shield electrode is introduced as an intermediary component between signal lines and sensing lines. This shield electrode acts as a mediator that blocks electromagnetic interference from signal lines from affecting the sensing lines, thereby preventing noise generation while allowing the signal lines and sensing lines to be arranged in close proximity for high integration.
2Productivity
If sensing lines are made narrower to fit more lines in limited area, then integration increases, but sensing sensitivity decreases
Solution Approach 1:
The shield electrode serves as a protective intermediary that blocks electromagnetic noise from signal lines. This protection allows sensing lines to be made wider without causing interference, thereby maintaining sensing sensitivity while achieving high integration through increased line width and spacing.
3Productivity
If sensing lines are arranged to overlap with signal lines to increase integration, then device integration increases, but noise in sensing lines increases
Solution Approach 1:
A shield electrode is positioned between signal lines and sensing lines to act as an electromagnetic barrier. This intermediary structure blocks noise from signal lines from coupling into sensing lines, enabling the two types of lines to overlap in the planar view for high integration without compromising sensing line signal quality.
4Object-affected harmful factors
If shield electrode is added to prevent noise, then noise reduction is achieved, but device complexity increases
Solution Approach 1:
The shield electrode is merged with the second electrode of the light emitting element, forming an integrated structure. This combining approach allows the shield electrode to perform its noise-blocking function while simultaneously serving as an electrical electrode, thereby reducing the total number of separate components and simplifying the overall device structure.
Data Source
AI summary
An electronic apparatus includes a base substrate including a first base area, a bending area, a second base area, and a pad area arranged in one direction, a plurality of pixels disposed in the first base area, each pixel including a transistor and a light emitting element, an encapsulation layer covering the light emitting element and spaced apart from the bending area and the second base area, a plurality of sensing electrodes disposed on the encapsulation layer, a plurality of sensing lines, each electrically connected to one of the sensing electrodes, and a shield electrode disposed on a same layer as the light emitting element and extending from the first base area toward the second base area. The shield electrode overlaps the sensing lines in the bending area and the second base area.