Display Panel Pressure Sensing via Scanning Driving Circuit
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current display panels with touch functions are complex due to the need for a driving circuit and metal wires to connect the pressure sensing unit, occupying panel space and increasing costs.
Innovation Solution
A display panel design that incorporates a scanning driving circuit and pressure sensing units with multiple input and output terminals, allowing for the detection of touch pressures without an extra driving circuit, reducing wiring and panel width.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a driving circuit and metal wires are added to connect the pressure sensing unit, then the pressure sensing function is achieved, but the display panel structure becomes complex and occupies more space
Solution Approach 1:
The patent merges the pressure sensing unit with the existing scanning driving circuit by directly connecting the pressure sensing unit's input terminals to the scanning lines, which are already part of the display panel's driving circuitry. This integration eliminates the need for separate driving circuits and metal wires, reducing structural complexity while maintaining pressure sensing functionality.
Solution Approach 2:
The scanning lines serve dual functions: they provide scanning signals for display operation and simultaneously serve as bias signal sources for the pressure sensing unit. This multi-functionality allows the existing scanning driving circuit to support both display and pressure sensing operations without requiring additional dedicated circuits.
2Reliability
If a driving circuit and metal wires are added to connect the pressure sensing unit, then the pressure sensing function is achieved, but the panel width increases
Solution Approach 1:
The patent merges the pressure sensing unit with the existing scanning driving circuit by directly connecting the pressure sensing unit's input terminals to the scanning lines, which are already part of the display panel's driving circuitry. This integration eliminates the need for separate driving circuits and metal wires, reducing structural complexity while maintaining pressure sensing functionality.
3Reliability
If a separate driving circuit is used for the pressure sensing unit, then the pressure sensing function is achieved, but the manufacturing cost increases
Solution Approach 1:
The scanning lines serve dual functions: they provide scanning signals for display operation and simultaneously serve as bias signal sources for the pressure sensing unit. This multi-functionality allows the existing scanning driving circuit to support both display and pressure sensing operations without requiring additional dedicated circuits.
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 design simplifies the display panel structure, reduces costs, and enhances the ability to detect touch pressures accurately, making it easier to achieve narrow-sided displays.
Implementation Method 1
a pressure sensing unit... detecting a first pressure sensing signal on the first output terminal of each pressure sensing unit; when the output terminal of the scanning driving circuit connected to the second input terminal of each pressure sensing unit provides the scanning signal, detecting a second pressure sensing signal on the first output terminal of each pressure sensing unit; and based on the first and the second pressure sensing signal, determining the magnitude of the pressure
Data Source
AI summary
A display panel, a display device, and a pressure sensing method are provided. The display panel includes a display region, a non-display region, a scanning driving circuit in the non-display region, a plurality of scanning lines extending in a first direction and being arranged in a second direction, and at least one pressure sensing unit. Each of the scanning lines is connected to one of output terminals of the scanning driving circuit and the first direction is perpendicular to the second direction. Each pressure sensing unit includes a first input terminal, a second input terminal, and a first output terminal. The first input terminal and the second input terminal are connected to different output terminals of the scanning driving circuit respectively, and the first output terminal is used for outputting a pressure sensing signal.