Touch Display Panel Sensor Layout for Full-Area Sensing
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Solution Overview
Problem
Existing display devices face challenges in integrating touch sensors and touch lines without influencing structural and functional characteristics, especially when components are moved from non-active to active areas, requiring a solution that maintains touch sensitivity and display performance.
Innovation Solution
A touch display panel design with first and second touch sensor groups disposed in the active area, connected through connecting patterns outside the function module, allowing touch sensing across the entire display area, including areas with function modules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If touch sensors are disposed in the non-active area, then the display function is not influenced, but the touch sensing area is limited and cannot cover the entire display area
Solution Approach 1:
The touch sensor area is divided into active area and non-active area segments, with different sensor arrangements in each segment. First touch sensor groups are disposed in the active area while second touch sensor groups are disposed in the non-active area, allowing expanded sensing coverage without compromising display performance in the active region
Solution Approach 2:
The patent extends touch sensing from the traditional two-dimensional non-active area boundary into the third dimension of functional integration by placing touch sensors within the active area between display elements, creating a multi-layered sensing architecture that covers the entire display surface
2Area of stationary object
If components are moved from non-active area to active area to expand display area, then the display area is increased, but the structure of the active area changes and touch sensing becomes more difficult
Solution Approach 1:
Different regions of the active area are assigned different functional qualities: some areas contain display elements while other areas between display elements contain touch sensors. This local differentiation allows the active area to simultaneously serve both display and touch sensing functions without requiring complete structural redesign
Solution Approach 2:
The active area is designed to serve multiple functions: displaying images and sensing touches. By disposing touch sensors within the active area between display elements, the same physical space performs dual functions, eliminating the need to sacrifice display area for touch sensing functionality
3Area of stationary object
If touch sensors are disposed in the active area, then the touch sensing area is expanded, but the structural characteristics of the display panel are influenced
Solution Approach 1:
The touch sensor groups are asymmetrically arranged within the active area, positioned between display elements rather than in symmetric patterns. This asymmetric placement optimizes space utilization and allows touch sensing without requiring symmetric structural modifications that would compromise display characteristics
Solution Approach 2:
Touch sensors are disposed in the intermediate spaces between display elements within the active area. These intermediate regions serve as mediators that allow touch sensing functionality to be integrated without directly interfering with the primary display structure and function
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
Enables touch sensing throughout the display area without deteriorating display performance, even with expanded active areas, by connecting touch sensors and lines in a way that accommodates functional modules.
Implementation Method 1
sense a change in a capacitance value that is caused when a user touches the display panel
Data Source
AI summary
Aspects of the present disclosure relate to a touch display panel and a touch display device. In a structure in which a function module is disposed in an active area of a touch display panel, by providing a structure in which touch sensors or touch lines adjacent to the function module are connected through a connecting pattern disposed outside the function module or a sensor connection line disposed in a bezel area of the function module, it is possible to provide a touch sensing function throughout the entire area where images are displayed in a structure including an area, where images are not displayed, such as a function module in an active area.