Touch-Detecting Display Panel With Segmented Slit Electrodes
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Solution Overview
Problem
Existing display panels with touch detectors face challenges in making touch detection electrodes less visible, which affects the aesthetic appeal and user experience.
Innovation Solution
The display panel incorporates an electrode layer segmented into first and second regions, with first slits extending in one direction and second slits allowing adjacent first slits in the second regions to communicate, thereby reducing visibility of the touch detection electrodes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If touch detection electrodes are arranged densely to improve detection precision, then measurement precision is improved, but the electrodes become more visible which worsens aesthetic appearance
Solution Approach 1:
The electrode layer is segmented into first regions and second regions along a first direction, with first slits extending in a second direction and second slits allowing communication between adjacent first slits. This segmentation creates a grid-like structure that reduces the visibility of individual electrodes while maintaining detection functionality.
Solution Approach 2:
The patent introduces a dual-directional slit system (first slits in second direction, second slits in first direction) to create a two-dimensional grid pattern. This dimensional approach allows electrodes to be less visible by breaking up their continuous appearance into smaller segments arranged in both horizontal and vertical orientations.
2Shape
If the electrode layer is segmented into multiple regions with slits to reduce visibility, then aesthetic appearance is improved, but device complexity increases
Solution Approach 1:
The electrode layer is divided into first regions and second regions with systematic first slits and second slits. This segmentation approach reduces visibility by creating a structured pattern that breaks up electrode continuity while maintaining organizational simplicity through regular spacing and arrangement.
Solution Approach 2:
Different regions of the electrode layer have different characteristics - first regions contain first slits extending in the second direction, while second regions contain second slits allowing communication between first slits. This local differentiation optimizes both aesthetic appearance and electrical functionality in different areas.
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 allows the touch detection electrodes to be less visible, enhancing the aesthetic appeal and user experience of the display panel.
Implementation Method 1
a capacitance-type touch panel has been promising as a device allowing low power consumption with a relatively simple structure. For example, Japanese Unexamined Patent Application Publication No. 2010-197576 discloses a display with a touch detector having a plurality of counter electrodes (drive electrodes) and a plurality of detection electrodes (touch detection electrodes) crossing the counter electrodes, which detects a touch event based on a change in capacitance, formed at each of the intersections of the counter electrodes and the detection electrodes, due to an external proximity object.
Data Source
AI summary
There are provided a display panel with a touch detector that allows the touch detection electrodes to be less visible, a touch panel, and an electronic unit having the display panel with a touch detector. The display panel with a touch detector includes: a display layer including a plurality of display elements arranged side by side; and an electrode layer alternately segmented into first regions and second regions along a first direction, the electrode layer including a plurality of first slits arranged side by side to extend in a second direction, and a plurality of second slits each allowing an adjacent pair of the plurality of first slits in the second regions to be in communication with one another.