Input Sensing Unit Lattice Sensor Arrangement for Display Devices
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing display devices lack efficient input sensing performance, particularly in providing accurate and intuitive touch input methods, which can be cumbersome and less responsive compared to conventional input methods like buttons or mice.
Innovation Solution
An input sensing unit is designed with a lattice arrangement of sensor units in two directions, connected by multiple wirings and pads, allowing for improved electrostatic coupling and precise detection of touch inputs through a capacitive sensing mechanism, enabling accurate coordinate determination of external inputs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sensor units are arranged in a lattice form with multiple wirings and pads, then input sensing performance and accuracy are improved, but device complexity increases
Solution Approach 1:
The sensor array is divided into multiple sensor units arranged in a lattice form, where each sensor unit includes first sensors and second sensors that are separately connected to first wirings and second wirings. This segmentation allows for independent connection paths that improve sensing accuracy while managing complexity through modular organization.
Solution Approach 2:
The patent introduces a two-dimensional lattice arrangement of sensor units with connections in both first and second directions. By adding this spatial dimensionality, the patent achieves improved input sensing performance through multiple connection paths without requiring a linear increase in overall system complexity.
2Reliability
If multiple first wirings and second wirings are used to connect sensor units, then electrostatic coupling and sensing performance are improved, but the number of signal lines increases
Solution Approach 1:
Sensor units that are symmetrically positioned (e.g., first sensor units and third sensor units, second sensor units and fourth sensor units) are connected to the same first wiring or second wiring. This merging of connection paths reduces the total number of distinct signal lines while maintaining reliable electrostatic coupling across all sensor units.
Solution Approach 2:
The first wirings and second wirings serve multiple functions by connecting multiple sensor units. Each wiring acts as a universal connection that serves several sensor units simultaneously, reducing the overall number of required signal lines while maintaining reliable electrostatic coupling.
3Measurement precision
If sensor units are arranged in a lattice form, then touch input detection accuracy is improved, but manufacturing complexity increases
Solution Approach 1:
The lattice arrangement divides the sensor array into discrete, identical sensor units that can be manufactured using standardized processes. Each sensor unit contains the same components (first sensors, second sensors, first wirings, second wirings), enabling modular manufacturing and assembly that reduces overall manufacturing complexity despite the increased spatial arrangement.
Solution Approach 2:
Each sensor unit is designed with specific local characteristics (first sensors connected to first wirings, second sensors connected to second wirings) that are consistent throughout the lattice. This local quality consistency allows for standardized manufacturing processes that can be replicated across the entire array, improving ease of manufacture while maintaining detection accuracy.
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 enhances input sensing performance by accurately determining touch input positions and reducing the complexity of signal lines and pads, thereby improving the overall user experience and responsiveness of the display device.
Implementation Method 1
allowing for improved electrostatic coupling and precise detection of touch inputs through a capacitive sensing mechanism
Data Source
AI summary
An input sensing unit of a display device includes a plurality of sensor units arranged in first and second directions, a plurality of first wirings, and a plurality of second wirings that are respectively connected to the plurality of sensor units. Each of the plurality of sensor units includes a first sensor and a sensor group corresponding to the first sensor and including k number (where k is a positive integer greater than 1) of second sensors arranged in the second direction. First sensors in sensor units arranged in the first direction among the plurality of sensor units are respectively connected to different first wirings among the plurality of first wirings, and first sensors in sensor units arranged in the second direction among the plurality of sensor units are respectively connected to different first wirings among the plurality of first wirings.