Integrated Window Member for Fingerprint Sensing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing display devices face challenges in integrating fingerprint sensing capabilities efficiently, leading to increased manufacturing costs and reduced sensing sensitivity due to separate components for polarization and touch films.
Innovation Solution
A window member is designed with polarization patterns and touch patterns integrated into grooves on a single substrate, reducing thickness and manufacturing costs while improving fingerprint sensing sensitivity by minimizing the distance between touch patterns and the user's finger.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate components are used for polarization film and touch film, then manufacturing flexibility is maintained, but manufacturing costs increase and sensing sensitivity decreases
Solution Approach 1:
The patent combines the polarization film and touch film into a single integrated window member structure. The polarization patterns and touch patterns are formed on the same substrate, eliminating the need for separate components and reducing assembly steps. This merging directly improves sensing sensitivity by minimizing the distance between touch patterns and the user's finger while reducing manufacturing complexity through consolidation.
Solution Approach 2:
The window member serves multiple functions simultaneously: it provides polarization functionality through polarization patterns, enables fingerprint sensing through touch patterns, and acts as a structural component. This multi-functionality reduces the overall number of components needed in the display device while maintaining or improving performance characteristics.
2Ease of manufacture
If separate components are used for polarization film and touch film, then manufacturing flexibility is maintained, but manufacturing costs increase
Solution Approach 1:
By merging the polarization film and touch film into a single window member, the patent reduces the quantity of materials and components required. The integrated structure eliminates the need for separate manufacturing processes and assembly operations, directly reducing manufacturing costs while maintaining ease of manufacture through streamlined production.
3Reliability
If touch film is placed farther from the display panel, then assembly is simplified, but sensing sensitivity decreases due to increased distance
Solution Approach 1:
The integration of touch patterns directly into the window member substrate eliminates intermediate layers and reduces the overall distance between the touch sensing elements and the user's finger. This merging approach improves sensing sensitivity by minimizing the path length for capacitive coupling while simplifying the assembly structure through consolidation.
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
The integrated window member enhances fingerprint sensing sensitivity and reduces manufacturing costs by integrating polarization and touch films, resulting in improved user interaction and cost-effectiveness.
Implementation Method 1
The window member includes a window substrate, polarization patterns, and touch patterns
Implementation Method 2
a capacitive method using variation in capacitance of a capacitor formed between electrodes
Data Source
AI summary
A display apparatus includes a display panel and a window member. The display panel includes pixels configured to display an image. The window member is disposed on the display panel. The window member includes a window substrate, polarization patterns, first electrodes, and second electrodes. The window substrate includes a first surface and a second surface. The first surface includes a first groove defined therein. The second surface faces the first surface. The second surface includes a second groove defined therein. The polarization patterns are disposed in the first groove. The first electrodes are disposed in the second groove. The first electrodes extend in a first direction. The second electrodes are disposed on the second surface and the horizontal electrodes. The second electrodes extend in a second direction crossing the first direction. The second electrodes are connected to the first electrodes.