OLED Panel Fingerprint Integration via Substrate Array Merging

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Solution Overview

Problem

Existing mobile devices with fingerprint identification features often require separate modules for display and fingerprint detection, which can compromise aesthetics and consistency, and may experience interference between display and fingerprint signal collection.

Innovation Solution

An organic light emitting display (OLED) panel with a fingerprint collecting unit array integrated into the array substrate or between the substrate and the OLED layer, connected to a control circuit that enables simultaneous display and fingerprint identification functions by managing signal collection and transmission effectively.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a separate fingerprint identifying module is disposed in a physical button, then fingerprint detection function is achieved, but device structure becomes complex and aesthetic consistency deteriorates

Engineering Contradiction:

Improvefingerprint detection functionVSAvoiddevice structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent integrates the fingerprint collecting unit array directly into the OLED panel structure, merging the fingerprint detection function with the display panel. The fingerprint collecting units are disposed within the array substrate or between the array substrate and OLED layer, eliminating the need for separate physical buttons or modules.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The OLED panel is designed to perform multiple functions simultaneously: display function through the OLED layer and fingerprint identification function through the integrated fingerprint collecting unit array. This multi-functional design allows the same component to serve dual purposes, reducing overall device complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Reliability

If separate components are used for display and fingerprint detection, then each component can be optimized independently, but potential interference between display and fingerprint signals increases

Engineering Contradiction:

Improvesignal collection accuracyVSAvoidsignal interference

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

By merging the fingerprint collecting unit array with the OLED panel at the substrate level, the patent creates an integrated structure where both display and fingerprint detection share the same physical platform. This integration reduces the risk of signal interference that would occur with separate components placed close together.

Inventive Principle:

Principle #5Merging (Combining)

3Adaptability or versatility

If a physical button is used for fingerprint identification, then fingerprint detection is achieved, but aesthetic consistency and integration deteriorates

Engineering Contradiction:

Improvefingerprint identification functionVSAvoidaesthetic consistency

Core Design Contradiction:

Adaptability or versatilityVSShape

Solution Approach 1:

The patent merges the fingerprint collecting unit array with the OLED panel, creating a seamless integrated design. The fingerprint collecting units are embedded within the panel structure, eliminating the need for protruding physical buttons and maintaining the smooth, consistent aesthetic of the display surface.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS10331933B2OLED panel, terminal and method for controlling identification

Publication Date: 2019.06.25 XIAOMI INC

AI summary

The present disclosure provides an OLED panel, a mobile device and a method for controlling identification, and belongs to the field of display technology. The OLED panel includes an array substrate, an OLED layer disposed on the array substrate, a fingerprint collecting unit array disposed in the array substrate, or a fingerprint collecting unit array disposed between the array substrate and the OLED layer, and a control circuit connected to the fingerprint collecting unit array.