Under-Display Fingerprint Sensor Mounting on Support Plate
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Solution Overview
Problem
The existing under-screen fingerprint identification solutions face challenges with the costly and fragile OLED screens, leading to increased costs, complexity, and low maintainability due to direct attachment and removal complications of fingerprint identification modules.
Innovation Solution
A fingerprint identification apparatus with a support plate mounting fingerprint sensor chips under the display screen, allowing for easier installation and maintenance, and including a circuit board connected to the sensor chips via a gold wire, with a filter and capacitors for improved imaging and signal processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the fingerprint identification module is directly attached to the OLED screen, then the fingerprint identification function is integrated, but the OLED screen is easily damaged and maintenance becomes difficult
Solution Approach 1:
The patent introduces a support plate as an intermediary component between the fingerprint sensor chip and the OLED screen. The support plate is mounted to the middle frame and positions the fingerprint sensor chip under the display screen without direct attachment to the OLED screen itself, thereby integrating the fingerprint identification function while preventing damage to the fragile OLED screen.
2Adaptability or versatility
If the fingerprint identification module is completely adhered to the OLED screen, then the integration is tight, but disassembly damages the OLED screen
Solution Approach 1:
The patent segments the fingerprint identification system into separate components: the fingerprint sensor chip mounted on a support plate, which is then attached to the middle frame. This segmentation allows the fingerprint sensor chip to be removed and replaced independently without damaging the OLED screen, significantly improving ease of repair and maintenance.
3Device complexity
If the fingerprint identification module is directly attached to the OLED screen, then the structure is simplified, but the attaching process becomes complicated
Solution Approach 1:
The patent applies preliminary action by pre-mounting the fingerprint sensor chip onto the support plate before installing the entire assembly onto the middle frame. This preliminary mounting step simplifies the attaching process by allowing the fingerprint sensor chip to be positioned and secured in advance, reducing the complexity of the final installation process.
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 solution reduces the complexity and cost of electronic devices while enhancing maintainability by allowing for easier mounting and efficient fingerprint detection without damaging the OLED screen, improving the overall fingerprint identification process.
Implementation Method 1
receive a fingerprint detecting signal returned by reflection or scattering via a human finger on the display screen
Implementation Method 2
receive a fingerprint detecting signal returned by reflection or scattering via a human finger on the display screen
Data Source
AI summary
Provided are a fingerprint identification apparatus and an electronic device. The fingerprint identification apparatus is applied to an electronic device having a display screen, wherein the fingerprint identification apparatus comprises: a support plate; and at least one fingerprint sensor chip, wherein a middle frame of the electronic device is provided with a groove located on an upper surface, and the at least one fingerprint sensor chip is disposed in the groove of the middle frame through the support plate so that the at least one fingerprint sensor chip is located under the display screen of the electronic device. In embodiments of the present application, by the support plate, costs and complexity of an electronic device could be reduced, and maintainability could be improved.