Display Device Gesture Recognition with Reduced Interference
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Summary
Problems
Display devices face challenges in recognizing user gestures close to the device due to interference from capacitive touch sensors and integrated antennas, particularly in wireless communication systems like LTE and 5G, which hinder accurate touch detection.
Innovation solutions
The display device incorporates a touch layer with specific antenna patterns and sensor electrodes configurations, including dummy holes and insulating layers, to isolate antenna signals from touch detection, allowing for simultaneous wireless communication and gesture recognition without overlapping with light-emitting areas.
TRIZ Analysis
Specific contradictions:
General conflict description:
Principle concept:
If a capacitive touch sensor is used to detect user touch, then touch sensing function is achieved, but gesture recognition near the display device becomes difficult due to interference from wireless communication
Why choose this principle:
The touch sensor is divided into multiple regions with different functions: a first region containing antenna patterns for wireless communication and a second region for touch sensing. This spatial segmentation allows wireless communication and touch sensing to operate simultaneously in different areas, reducing mutual interference and improving gesture recognition accuracy near the display device.
Principle concept:
If a capacitive touch sensor is used to detect user touch, then touch sensing function is achieved, but gesture recognition near the display device becomes difficult due to interference from wireless communication
Why choose this principle:
The antenna patterns are extracted and placed in a dedicated first region separate from the touch sensing area. By removing the antenna patterns from the touch sensing region and placing them in a separate zone, the patent eliminates the interference between wireless communication signals and touch sensor operations, thereby improving gesture detection accuracy.
Application Domain
Data Source
AI summary:
The display device incorporates a touch layer with specific antenna patterns and sensor electrodes configurations, including dummy holes and insulating layers, to isolate antenna signals from touch detection, allowing for simultaneous wireless communication and gesture recognition without overlapping with light-emitting areas.
Abstract
A display device is provided. The display device comprise a substrate a display layer disposed on the substrate and including a plurality of light-emitting areas, and a touch layer disposed on the display layer and including a touch area and a non-touch area, the touch layer includes: a plurality of first sensor electrodes and a plurality of second sensor electrodes disposed in the touch area, and a plurality of antenna patterns disposed in a portion of the touch area disposed adjacent to the non-touch area, the plurality of antenna patterns includes: a first antenna pattern transmitting a transmit signal, and a second antenna pattern receiving the transmit signal, wherein each of the first antenna pattern and the second antenna pattern is at least partially surrounded by one of the plurality of first sensor electrodes or one of the plurality of second sensor electrodes in a plan view.