Display Panel Shielding for Transparent Display and Under-Screen Recognition
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Solution Overview
Problem
Existing display technologies face challenges in achieving good display functions in scenarios like under-screen recognition and transparent display due to structural limitations, leading to issues such as signal interference and reduced pixel density.
Innovation Solution
A display panel design incorporating an isolation structure with light-transmitting openings and a shielding layer that overlaps with these openings, allowing for light transmittance while preventing signal interference, and a manufacturing method that eliminates the need for precise alignment during film layer deposition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a shielding structure is added to prevent signal interference, then signal interference is reduced, but device complexity increases
Solution Approach 1:
The patent combines the shielding function with the existing pixel defining layer by forming a shielding hole within it, rather than adding a separate shielding structure. This merging approach prevents signal interference while avoiding the complexity of additional components
Solution Approach 2:
The pixel defining layer serves dual functions: it defines the pixel boundaries and simultaneously acts as a shielding structure through the shielding hole. This multi-functionality reduces overall device complexity while maintaining signal interference prevention
2Illumination intensity
If light-transmitting openings are added to enable transparent display, then light transmittance is improved, but signal interference increases
Solution Approach 1:
The patent segments the pixel defining layer into distinct regions: a shielding hole for signal interference prevention and light-transmitting openings for transparent display functionality. This segmentation allows each region to perform its specific function without compromising the other
Solution Approach 2:
Different regions of the pixel defining layer have different properties: the shielding hole provides electromagnetic shielding while the light-transmitting openings provide optical transparency. This local differentiation of properties allows simultaneous achievement of both functions
3Manufacturing precision
If precise alignment is required during film layer deposition, then manufacturing precision is improved, but manufacturing complexity increases
Solution Approach 1:
The patent forms the shielding hole and light-transmitting openings in the pixel defining layer before depositing subsequent film layers. This preliminary action establishes alignment references that simplify later deposition processes and reduce the need for precise real-time alignment
Data Source
AI summary
Disclosed are a display panel and a manufacturing method therefor, and a display device. The display panel includes a substrate, and a display functional layer, an isolation structure, a pixel defining layer, and a shielding layer located on the substrate. The isolation structure is located on the substrate, and defines a plurality of light-transmitting openings and a plurality of isolation openings. The pixel defining layer is located between the isolation structure and the substrate, and includes a plurality of pixel openings. The shielding layer includes a plurality of first shielding units located between the pixel defining layer and the substrate. The first shielding unit corresponds to at least part of the light-transmitting openings, and at least partially overlaps with the corresponding light-transmitting opening. Thus, shielding at the light-transmitting opening may be provided by the shielding layer to avoid signal interference while ensuring the light transmittance of the light-transmitting opening.