Micro-Photoelectric Display Layout With Shielded Pixel Gap Sensing
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Solution Overview
Problem
Existing electronic devices for biometric identification and physiological parameter measurement lack high accuracy and efficient integration of micro-photoelectric elements for effective detection and sensing.
Innovation Solution
The electronic device comprises a first module with a pixel substrate and a counter substrate, and a second module with micro-photoelectric units and a protection layer, where the micro-photoelectric units are aligned with shielding units of the first module, enabling high accuracy detection and sensing without interfering with the display function.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If micro-photoelectric units are integrated into the display module, then detection accuracy and sensing capability are improved, but device complexity increases
Solution Approach 1:
The patent merges the display function (first module with pixel substrate) and sensing function (second module with micro-photoelectric units) into a single integrated display device. The micro-photoelectric units are stacked upon the pixel substrate in the same module structure, enabling both display and detection functions to be performed by the same device without requiring separate independent systems.
Solution Approach 2:
The display module is designed to perform multiple functions: it serves as both a display device (through the pixel substrate and counter substrate) and a sensing device (through the micro-photoelectric units). This multi-functional design allows the same structural components to fulfill different purposes, reducing overall system complexity while improving detection capabilities.
2Productivity
If micro-photoelectric units are placed adjacent to pixels, then detection efficiency is improved, but interference with display function may occur
Solution Approach 1:
The patent resolves the spatial conflict between pixels and micro-photoelectric units by transitioning from a planar arrangement to a three-dimensional stacked arrangement. The micro-photoelectric units are positioned in the vertical dimension (stacked upon the pixel substrate), while pixels remain in their original planar positions. This dimensional separation allows both elements to coexist without interfering with each other's functions while maintaining high detection efficiency.
Solution Approach 2:
The patent introduces shielding units as intermediary elements positioned between the pixels and micro-photoelectric units. These shielding units block stray light from reaching adjacent pixels, preventing display interference while allowing the micro-photoelectric units to efficiently detect light signals. The shielding units act as mediators that enable close proximity placement without functional compromise.
3Reliability
If shielding units are added to prevent interference, then display quality is maintained, but manufacturing complexity increases
Solution Approach 1:
The shielding units are integrated into the existing module structure rather than being added as separate components. They are positioned within the same stacked architecture as the pixels and micro-photoelectric units, utilizing the same manufacturing layers and assembly processes. This integration reduces manufacturing complexity by combining multiple functions into a unified structure.
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 device achieves a high accuracy detection rate by aligning micro-photoelectric units with shielding units, allowing them to fill gaps between pixels without interfering with display functions, and improving detection efficiency through flexible configuration of light-emitting and sensor elements.
Implementation Method 1
Each of the micro-photoelectric units comprises a micro-photoelectric element, and at least one of the micro-photoelectric elements is a sensor element
Data Source
AI summary
An electronic device may include: a display panel comprising a substrate, a plurality of pixels, a driving circuit, a display medium formed from an organic light-emitting material, and a plurality of shielding units on a first side of the substrate; a plurality of micro-photoelectric units on a second side of the substrate; and a filling layer including a transparent material and disposed on the second side of the substrate. The plurality of micro-photoelectric units may comprise respective micro-photoelectric elements, and at least one of the micro-photoelectric elements may be, or may include, a sensor element. Each of the plurality of micro-photoelectric units may be configured to emit light in a direction opposite to the substrate.