Patterned Counter Electrodes for Sensor Integration in Display Panels
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Solution Overview
Problem
Current display apparatuses face challenges in achieving full-screen display technology due to the presence of bezels, which can distract users and limit the viewing experience, as existing methods struggle to integrate sensors seamlessly into the display area without compromising image quality or increasing manufacturing complexity.
Innovation Solution
A method of manufacturing a display apparatus that includes forming counter electrodes with specific patterns and arrangements on a substrate, using masks with rib structures to deposit materials, and creating a sensor area with high light transmittance to integrate sensors within the display area, allowing for a seamless integration of sensor functions while maintaining image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If sensors are integrated into the display area, then full-screen display technology is achieved and bezel visibility is minimized, but light transmittance in sensor areas may be compromised
Solution Approach 1:
The sensor area is divided into multiple discrete counter electrodes arranged in specific patterns, allowing light to pass through the gaps between electrodes while maintaining sensor functionality. This segmentation enables the sensor region to achieve high light transmittance comparable to the display area.
Solution Approach 2:
Different regions of the display apparatus are designed with different properties: the display area uses continuous counter electrodes for image display, while the sensor area uses patterned counter electrodes with high light transmittance for sensor integration. This local differentiation allows each region to optimize its specific function.
2Adaptability or versatility
If counter electrodes are formed with complex patterns for sensor integration, then sensor functionality is improved, but manufacturing complexity increases
Solution Approach 1:
Multiple counter electrodes are formed in a single deposition process using a mask with multiple opening portions, combining what would otherwise require multiple separate fabrication steps. This merging approach simplifies manufacturing while achieving the desired complex pattern for sensor integration.
Solution Approach 2:
The counter electrodes in the sensor area serve dual functions: they act as electrodes for the display apparatus and simultaneously provide structural support and light filtering for the integrated sensor. This multi-functionality reduces the need for additional components and simplifies the overall device structure.
3Illumination intensity
If counter electrodes are spaced apart in sensor area, then light transmittance is improved, but electrode effectiveness may be compromised
Solution Approach 1:
The counter electrodes in the sensor area are designed with asymmetric spacing and positioning relative to the sensor component, optimizing both light transmittance paths and electrical field distribution. This asymmetric design allows the electrodes to maintain effectiveness while maximizing light passage to the sensor.
Solution Approach 2:
The electrode effectiveness is maintained not only through in-plane spacing but also through vertical positioning and overlapping arrangements with other layers. By utilizing the third dimension, the electrodes can be spaced apart in the sensor area while still providing adequate electrical function through their spatial configuration.
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 approach enables the production of display apparatuses with improved light transmittance in sensor areas, enhancing user experience by minimizing bezel visibility and integrating sensor functions effectively, thereby addressing the limitations of existing technologies.
Implementation Method 1
depositing second counter electrodes having a second pattern different from the first pattern to be spaced apart from one another in the sensor area
Data Source
AI summary
A method of manufacturing a display apparatus includes: preparing a substrate including a display area and a sensor area arranged in the display area; forming first counter electrodes on the substrate so that the first counter electrodes are spaced apart from one another in the sensor area to have a first pattern; depositing second counter electrodes having a second pattern different from the first pattern to be spaced apart from one another in the sensor area; and arranging a component to correspond to the sensor area.