Fingerprint Module Integration on Functional FPC via Glue Film Opening
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Solution Overview
Problem
The integration and attaching method of fingerprint modules in display devices requires additional dedicated FPC carriers, connectors, and special machines, increasing manufacturing costs and potentially causing damage to the display panel and light leakage issues.
Innovation Solution
A display device and method that integrate a fingerprint module onto a functional flexible circuit board (FPC) attached to the display panel using a glue film with an opening area, eliminating the need for separate FPC carriers and machines, and ensuring the fingerprint module is embedded within the glue film to prevent light leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If additional dedicated FPC carriers and connectors are used to attach fingerprint modules, then the fingerprint module can be integrated into the display device, but manufacturing costs increase and device complexity increases
Solution Approach 1:
The patent combines the fingerprint module directly with the existing functional FPC (Main FPC or Touch FPC) that is already attached to the display panel. This merging eliminates the need for separate dedicated FPC carriers and connectors, reducing device complexity while maintaining fingerprint module integration capability
Solution Approach 2:
The existing functional FPC serves dual purposes: it functions as the original flexible circuit board for display/touch control and simultaneously serves as the mounting carrier for the fingerprint module. This multi-functionality eliminates the need for additional dedicated components
2Adaptability or versatility
If additional dedicated FPC carriers and connectors are used to attach fingerprint modules, then the fingerprint module can be integrated into the display device, but manufacturing costs increase
Solution Approach 1:
The patent combines the fingerprint module directly with the existing functional FPC (Main FPC or Touch FPC) that is already attached to the display panel. This merging eliminates the need for separate dedicated FPC carriers and connectors, reducing device complexity while maintaining fingerprint module integration capability
Solution Approach 2:
The existing functional FPC serves dual purposes: it functions as the original flexible circuit board for display/touch control and simultaneously serves as the mounting carrier for the fingerprint module. This multi-functionality eliminates the need for additional dedicated components
3Adaptability or versatility
If special machines are used to attach fingerprint modules, then the fingerprint module can be integrated into the display device, but manufacturing complexity increases
Solution Approach 1:
The patent combines the fingerprint module directly with the existing functional FPC (Main FPC or Touch FPC) that is already attached to the display panel. This merging eliminates the need for separate dedicated FPC carriers and connectors, reducing device complexity while maintaining fingerprint module integration capability
4Reliability
If the fingerprint module is attached to the display panel, then fingerprint recognition function is achieved, but damage to the display panel may occur
Solution Approach 1:
The patent uses the functional FPC as an intermediary carrier between the display panel and the fingerprint module. The fingerprint module is attached to the FPC, which is already bonded to the display panel, thereby avoiding direct attachment that could damage the display panel
5Reliability
If the fingerprint module is attached to the display panel, then fingerprint recognition function is achieved, but light leakage issues may occur
Solution Approach 1:
The patent uses the functional FPC as an intermediary carrier between the display panel and the fingerprint module. The fingerprint module is attached to the FPC, which is already bonded to the display panel, thereby avoiding direct attachment that could damage the display panel
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 reduces manufacturing costs by eliminating the need for dedicated components and machines, while preventing damage to the display panel and addressing light leakage issues by embedding the fingerprint module within the glue film.
Implementation Method 1
a surface of the adhesive layer is bonded to the back surface of the display panel
Data Source
AI summary
The embodiments of the present disclosure disclose a display device and a method for attaching a fingerprint module. The display device comprises: a display panel, a fingerprint module and a functional flexible circuit board (FPC); a glue film is attached to a side of the display panel away from a light emitting surface, and an opening area is provided in the glue film, the functional FPC is attached to the side of the display panel away from the light emitting surface with the glue film; the fingerprint module is disposed on a side of the functional FPC close to the display panel, and the fingerprint module is embedded in the opening area of the glue film.