OLED Display Panel Integrating Optical Fingerprint Recognition
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional OLED display devices cannot integrate fingerprint recognition technology for full-screen recognition due to the complex structure of capacitance fingerprint sensing devices, which enlarges the non-display area and affects the overall display structure.
Innovation Solution
An OLED display panel with sub-pixel units configured to emit blue, green, and red monochromatic light, where each pixel area includes a displaying module and a light receiving module, allowing for optical fingerprint recognition by converting light signals from a finger into electric signals, enabling full-screen fingerprint recognition while maintaining a simple structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a capacitance fingerprint sensing device is separately arranged in the non-display area of the OLED display device, then fingerprint recognition function is achieved, but the non-display area is enlarged and the overall structure is affected
Solution Approach 1:
The patent merges the fingerprint sensing function with the display pixels by integrating a light receiving module into the same pixel structure that emits light. This allows the fingerprint recognition function to be embedded within the display area itself, eliminating the need for separate sensing devices in the non-display area and achieving full-screen fingerprint recognition.
Solution Approach 2:
The pixel structure is designed to perform multiple functions: it serves both as a light-emitting display element and as a light-receiving fingerprint sensor. By making the pixel universal, the patent eliminates the need for dedicated fingerprint sensing areas, thereby maximizing the display area while maintaining fingerprint recognition capability.
2Reliability
If a capacitance fingerprint sensing device is separately arranged, then fingerprint recognition is implemented, but the structure becomes complicated
Solution Approach 1:
The patent combines the fingerprint sensing function with the display pixels by integrating a light receiving module into the same pixel structure that emits light. This allows the fingerprint recognition function to be embedded within the display area itself, eliminating the need for separate sensing devices and reducing overall structural complexity.
Solution Approach 2:
The pixel structure is designed to perform multiple functions: it serves both as a light-emitting display element and as a light-receiving fingerprint sensor. By making the pixel universal, the patent eliminates the need for dedicated fingerprint sensing components, thereby simplifying the overall device structure.
3Reliability
If conventional capacitance fingerprint sensing is used, then fingerprint recognition is achieved, but full-screen recognition cannot be realized
Solution Approach 1:
The patent merges the fingerprint sensing function with the display pixels by integrating a light receiving module into the same pixel structure that emits light. This allows the fingerprint recognition function to be embedded within the display area itself, enabling full-screen fingerprint recognition without compromising display area.
Solution Approach 2:
The pixel structure is designed to perform multiple functions: it serves both as a light-emitting display element and as a light-receiving fingerprint sensor. This multi-functionality enables the entire display screen to participate in fingerprint recognition, achieving full-screen coverage while maintaining display integrity.
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 integrates fingerprint recognition into the OLED display panel, achieving accurate and full-screen recognition without compromising the display area, enhancing both safety and operability.
Implementation Method 1
the light receiving module is configured to receive the monochromatic light reflected by a finger and convert a light signal of the monochromatic light into an electric signal
Implementation Method 2
The OLED display panel includes a plurality of sub-pixel units arranged in arrays, the plurality of sub-pixel units are configured to emit blue, green, and red monochromatic light
Implementation Method 3
the displaying module is configured to emit the monochromatic light
Data Source
AI summary
An organic light-emitting diode display panel for fingerprint recognition includes a plurality of pixel areas arranged in arrays, the pixel area includes a pixel unit and a fingerprint recognition unit, which are adjacent to each other, the pixel unit is configured to emit colorful image light, the fingerprint recognition unit comprises a sensing light emitting module and a sensing light receiving module, the sensing light emitting module is configured to emit sensing light to a finger, and the sensing light receiving module is configured to receive the sensing light reflected by the finger and convert a light signal of the sensing light into an electric signal. An electronic device is also provided.