OLED Touch Fingerprint Integration
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Solution Overview
Problem
Current OLED devices with plug-in fingerprint identification structures increase thickness and manufacturing costs, impacting user experience and panel integration.
Innovation Solution
An OLED device with an integrated touch control structure that includes a first and second touch control layer, where the fingerprint identification structure is disposed on the same layer as the second touch control layer, utilizing a capacitive structure with overlapping electrodes and a flexible circuit board to reduce thickness and production costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a plug-in fingerprint identification structure is used, then fingerprint identification function is achieved, but the OLED device thickness increases
Solution Approach 1:
The patent combines the fingerprint identification structure with the touch control structure by disposing the fingerprint identification electrodes on the same layer as the second touch control electrodes. This merging of functions into a single integrated structure eliminates the need for separate plug-in components, thereby achieving fingerprint identification while reducing overall device thickness.
Solution Approach 2:
The patent creates a multi-functional structure where the same layer contains both touch control electrodes and fingerprint identification electrodes. This universal structure serves dual purposes: touch control operation and fingerprint recognition, eliminating the need for separate dedicated layers and reducing thickness.
2Reliability
If a plug-in fingerprint identification structure is used, then fingerprint identification function is achieved, but manufacturing processes and cost increase
Solution Approach 1:
The patent merges the fingerprint identification structure with the existing touch control structure, allowing both functions to be manufactured in the same production line using the same layer deposition processes. This integration reduces manufacturing process complexity and cost compared to separate plug-in structures.
Solution Approach 2:
By creating a universal structure that performs both touch control and fingerprint identification functions, the patent enables a single manufacturing process to produce multiple functions simultaneously, reducing overall manufacturing complexity and cost.
3Reliability
If separate touch control and fingerprint identification structures are used, then both functions are achieved, but device integration is reduced
Solution Approach 1:
The patent merges separate touch control and fingerprint identification structures into a single integrated structure where both electrode systems are disposed on the same layer. This merging increases panel integration while maintaining both functions, reducing the number of separate components and improving device complexity management.
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 solution effectively integrates under-screen fingerprint identification and touch control, reducing the OLED device's thickness and production costs while maintaining normal touch control operations.
Implementation Method 1
the first touch control layer and a second touch control layer, which are electrically connected to each other... a projection of the second touch control electrodes on the display panel and a projection of the first touch control electrodes on the display panel cross each other and have an overlapping area
Implementation Method 2
Organic light-emitting diode (OLED) device... an organic light-emitting layer disposed on the array driving circuit layer
Data Source
AI summary
The organic light-emitting diode (OLED) device of the present invention includes a display panel; a touch control structure disposed on the display panel and including: a first touch control layer and a second touch control layer, which are electrically connected to each other; and a fingerprint identification structure disposed on a same layer as the second touch control layer.