Touch Display Panel Corner Pressure Detection Blind Area Elimination
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Solution Overview
Problem
Touch display panels face pressure detection blind areas at their corners due to the inability of pressure sensor units to detect deformations effectively, limiting the accuracy of pressure detection.
Innovation Solution
Incorporating a plurality of pressure sensors in a non-display area around the touch display panel, with at least one sensor positioned between 2.5 mm and 42.5 mm away from the closest corner, to enhance pressure detection capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If pressure sensor units are disposed in the touch display panel to detect touch pressure values, then touch pressure detection capability is improved, but pressure detection blind areas appear at the corners of the touch display panel
Solution Approach 1:
The patent extends pressure detection from the display area into the non-display area by positioning pressure sensors in the bezel region. This spatial extension into an additional dimensional zone (the non-display area surrounding the display) allows corner pressure detection without interfering with the display function, thereby eliminating detection blind spots while maintaining measurement precision.
Solution Approach 2:
The patent introduces the non-display area as an intermediary zone that mediates between the display area and the corner regions. By placing pressure sensors in this intermediary non-display area at specific distances from corners, the system achieves corner pressure detection without the sensors directly interfering with the display area or being too close to cause detection errors.
2Reliability
If pressure sensors are positioned close to the corners of the touch display panel, then corner pressure detection capability is improved, but detection accuracy decreases due to deformation characteristics
Solution Approach 1:
The patent optimizes the positional parameter of pressure sensors by specifying a precise distance range (2.5 mm to 42.5 mm) from the corners. This parameter optimization balances two competing requirements: being close enough to detect corner pressures reliably, yet far enough to avoid areas with poor deformation characteristics that would reduce measurement accuracy. The specific distance parameter resolves the contradiction between coverage and precision.
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 improves pressure detection conditions by allowing sensors to accurately detect pressure values applied to the corners, eliminating blind areas and enhancing overall touch interaction precision.
Implementation Method 1
The pressure sensor units detect touch pressure values by sensing stresses or strains in two directions.
Implementation Method 2
The pressure sensor units detect touch pressure values by sensing stresses or strains in two directions.
Data Source
AI summary
A touch display panel and a display device are provided. The touch display panel includes a display area and a non-display area around the display area. The non-display area includes a plurality of pressure sensors. At least one of the plurality of pressure sensors is located a distance of H away from a closest corner of the touch display panel, where H satisfies: 2.5 mm<H<42.5 mm. The touch display panel and the display device are provided to improve the pressure detection of the touch display panel.