Display Device Sensing Parts with Variable Width Conductive Patterns
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Solution Overview
Problem
Existing display devices face challenges in enhancing the touch sensitivity of their input sensing parts, which affects the accuracy and responsiveness of user interactions.
Innovation Solution
The display device incorporates a display panel with alternately arranged first, second, and third light emitting elements, and sensing parts with mesh lines and conductive patterns. The mesh lines are interposed between the light emitting elements, and conductive patterns with a greater width than the mesh lines are placed between the third light emitting elements, enhancing capacitance and touch sensitivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional sensing parts with uniform line widths are used, then the manufacturing process is simple, but the touch sensitivity is insufficient
Solution Approach 1:
The patent applies local quality by varying the width of conductive patterns in different regions of the sensing part. Specifically, conductive patterns have different widths (first width, second width, third width) in different areas, allowing the capacitance to be locally optimized for enhanced touch sensitivity while maintaining a relatively simple overall structure.
2Measurement precision
If the capacitance of sensing parts is increased to improve touch sensitivity, then touch sensitivity improves, but the area occupied by sensing parts increases
Solution Approach 1:
The patent changes the parameter of conductive pattern width to optimize capacitance. By adjusting the width of conductive patterns in different regions (first width, second width, third width), the capacitance is increased to improve touch sensitivity without necessarily increasing the overall sensing part area, as the width variation allows for more efficient use of the available space.
3Measurement precision
If multiple conductive patterns with different widths are used, then touch sensitivity is enhanced, but the manufacturing precision requirements increase
Solution Approach 1:
The patent segments the sensing part into multiple regions with different conductive pattern widths. This segmentation allows each region to be optimized for specific sensing requirements while maintaining manufacturability, as the segmentation can be integrated into the existing manufacturing process flow without requiring entirely new fabrication techniques.
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 increases the capacitance formed by the sensing parts, thereby improving the touch sensitivity of the input sensing part, leading to more accurate and responsive user interactions.
Implementation Method 1
A capacitance is formed by the sensing parts, and variations in the capacitance are detected when the user touches the input sensing part
Data Source
AI summary
A display device including: a display panel including first and second light emitting elements alternately arranged in a first direction in odd-numbered columns, and third light emitting elements arranged in the first direction in even-numbered columns; and sensing parts disposed on the display panel, wherein each of the sensing parts includes: a plurality of mesh lines between an n-th first light emitting element and an n-th second light emitting element, between the n-th first light emitting element and an n-th third light emitting element, and between the n-th second light emitting element and the n-th third light emitting element, when viewed in a plan view; and conductive patterns interposed between the third light emitting elements arranged in one even-numbered column, when viewed in the plan view, and wherein each of the conductive patterns has a width greater than a width of each of the mesh lines.