Display Panel Support Unit Placement for Fingerprint Sensitivity
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Solution Overview
Problem
In display panels with fingerprint identification functions, the compact arrangement of layers and components leads to low light transmittance, affecting the sensitivity of light sensation fingerprint identification due to excessive light scattering and signal loss.
Innovation Solution
A decentralized arrangement of support units is implemented, where they are predominantly placed in non-light-transmitting areas, reducing their impact on the light-transmitting areas and improving the overall light transmittance ratio, thereby enhancing the sensitivity of light sensation fingerprint identification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If support units are arranged in a compact manner to maintain structural integrity, then structural stability is improved, but light transmittance deteriorates
Solution Approach 1:
The support units are selectively positioned to be adjacent to the short sides of aperture areas rather than uniformly distributed. This localized arrangement provides structural support where needed while minimizing interference with light transmission paths, thereby resolving the contradiction between structural stability and light transmittance.
Solution Approach 2:
The patent specifies that the effective length of support units parallel to aperture areas should be smaller than the aperture area dimensions, creating a dimensional relationship where support units occupy less critical light transmission space. This dimensional optimization allows structural support without significantly compromising light transmittance.
2Strength
If support units occupy more area to provide adequate structural support, then structural strength is improved, but effective light-transmitting area deteriorates
Solution Approach 1:
Support units are strategically positioned adjacent to short sides of aperture areas rather than being uniformly distributed across the display panel. This localized placement provides structural strength at critical points while minimizing the total area occupied by support units, thereby preserving more effective light-transmitting area.
Solution Approach 2:
The patent employs a minimal number of support units positioned at critical locations (adjacent to aperture areas) rather than providing continuous support across the entire panel. This partial action approach provides sufficient structural strength while minimizing interference with light transmission.
Data Source
AI summary
A display panel and a display device are provided. The display panel includes a fingerprint identification area, at least one support unit, and a pixel definition layer. The fingerprint identification area includes a light-transmitting area and a non-light-transmitting area. The support unit is disposed in the light-transmitting area and the non-light-transmitting area. The pixel definition layer includes a plurality of aperture areas each exposing at least one light-emitting unit. Each aperture area has a first neighboring side adjacent to a support unit having a second neighboring side disposed opposite to the first neighboring side. The second neighboring side has an effective length that is parallel to and directly facing the first neighboring side, and the effective length is smaller than a length of the first neighboring side; or, the support unit is disposed adjacent to the first neighboring side, which is a short side of the aperture area.