Ultrasonic Transducer Integration in Display Substrate
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Solution Overview
Problem
The integration of ultrasonic transducers in display devices increases the thickness due to the need for an independent driver circuit, which complicates the circuit and increases power consumption.
Innovation Solution
The ultrasonic transducer's receiving electrode layer is integrated within the display substrate, allowing other parts of the transducer to be positioned outside, sharing a pixel circuit with the light emitting device to reduce thickness and circuit complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an independent driver circuit is provided for the ultrasonic transducer, then the ultrasonic transducer can transmit and receive ultrasonic waves, but the device thickness increases and circuit complexity increases
Solution Approach 1:
The patent merges the ultrasonic transducer's receiving electrode layer with the display substrate's internal structure, integrating the transducer into the display panel's thin-film transistor (TFT) layer. This integration eliminates the need for a separate driver circuit, thereby reducing device thickness while maintaining ultrasonic transmission and reception functionality.
Solution Approach 2:
The display substrate is designed to serve multiple functions: it acts as both the display panel and the housing for the ultrasonic transducer's receiving electrode layer. The TFT layer is utilized dual-purpose for both display driving and ultrasonic signal reception, reducing the need for additional dedicated circuitry and components.
2Reliability
If an independent driver circuit is provided for the ultrasonic transducer, then the ultrasonic transducer can transmit and receive ultrasonic waves, but power consumption increases
Solution Approach 1:
The patent combines the ultrasonic transducer's receiving electrode layer with the display substrate's internal structure, integrating the transducer into the display panel's thin-film transistor (TFT) layer. This integration eliminates the need for a separate driver circuit, thereby reducing device thickness while maintaining ultrasonic transmission and reception functionality.
Solution Approach 2:
The display substrate is designed to serve multiple functions: it acts as both the display panel and the housing for the ultrasonic transducer's receiving electrode layer. The TFT layer is utilized dual-purpose for both display driving and ultrasonic signal reception, reducing the need for additional dedicated circuitry and components.
3Length of stationary object
If the receiving electrode layer is integrated within the display substrate, then the overall thickness is reduced and circuit complexity is simplified, but the ultrasonic transducer structure becomes more integrated
Solution Approach 1:
The patent embeds the ultrasonic transducer's receiving electrode layer within the nested layers of the display substrate, specifically integrating it into the thin-film transistor (TFT) structure. This nesting approach allows the transducer to be housed within the existing display panel layers, reducing overall thickness while managing integration complexity through systematic layer incorporation.
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 reduces the overall thickness of the display device and lowers power consumption by sharing the pixel circuit between the light emitting device and the ultrasonic transducer, simplifying the circuit design.
Implementation Method 1
other parts of the ultrasonic transducer include a piezoelectric material layer and a transmitting electrode layer
Implementation Method 2
other parts of the ultrasonic transducer include a piezoelectric material layer and a transmitting electrode layer
Data Source
AI summary
A display apparatus, display device and control method thereof, and non-transient computer-readable storage medium are provided. The display apparatus includes a display substrate and an ultrasonic transducer. The ultrasonic transducer includes a receiving electrode layer, which is disposed between two opposite bottom surfaces of the display substrate, and other parts of the ultrasonic transducer are disposed outside the display substrate. The display substrate includes a first pixel circuit and a first light emitting device, and the first light emitting device and the receiving electrode layer are respectively connected with the corresponding output terminals of the first pixel circuit.