Display Panel Partition Structure for Narrower Hole-Punch Frames
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Solution Overview
Problem
Existing display technologies with hole-punch screens face challenges in achieving a high screen-to-body ratio due to the wide frame of the hole-punch region, which affects the visual effect and reduces the effective display area.
Innovation Solution
A display panel design that includes a substrate, an insulating structure, a partition structure, a light emitting element, and a first encapsulation layer, where the partition structure separates the luminescent materials of adjacent light emitting elements, eliminating the need for fine metal masks and allowing for a reduced width of the first transition region (frame of the hole-punch region).
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If isolation posts and encapsulation structures are mounted at the edge of the hole-punch region to protect the display panel, then the reliability and protection are improved, but the frame width of the hole-punch region increases, worsening the visual effect and reducing the screen-to-body ratio
Solution Approach 1:
The patent extracts the luminescent material from the first transition region (the frame area surrounding the hole-punch region), leaving only the insulating structure and encapsulation layer in this region. This removal of unnecessary luminescent material reduces the frame width while maintaining the protective encapsulation structure, thereby resolving the contradiction between reliability and frame width.
Solution Approach 2:
The patent segments the display panel into distinct regions: the display region with light emitting elements, the first transition region with only insulating structure and encapsulation (no luminescent material), and the hole region. This segmentation allows the frame area to be minimized while preserving encapsulation reliability, as the insulating structure and encapsulation layer remain intact to provide protection.
2Area of stationary object
If the frame width of the hole-punch region is reduced to improve the screen-to-body ratio and visual effect, then the display area is improved, but the encapsulation reliability may be compromised
Solution Approach 1:
The patent extracts luminescent material from the first transition region while retaining the insulating structure and encapsulation layer. This allows the frame width to be minimized (increasing display area) while maintaining encapsulation reliability through the preserved insulating and encapsulation structures.
Solution Approach 2:
The insulating structure is formed beforehand to define the first transition region, and the encapsulation layer is applied to cover this region. This preliminary preparation ensures that even when the frame width is minimized, the encapsulation reliability is maintained through the pre-established protective structures.
3Ease of manufacture
If luminescent materials are evaporated without partition structures, then the manufacturing process is simplified, but adjacent light emitting elements cannot be properly separated, worsening the manufacturing precision
Solution Approach 1:
Instead of using complex fine metal masks to define pixel patterns during luminescent material deposition, the patent inverts the approach by using a partition structure to physically separate adjacent light emitting elements. The partition structure is formed first, creating isolated regions where luminescent material can be evaporated without cross-contamination, thereby achieving high manufacturing precision through a simpler process.
Data Source
AI summary
A display panel and a display device. The display panel includes: a substrate; an insulating structure disposed on the substrate and located in a display region and a first transition region; a partition structure disposed on the insulating structure and defining a first opening and a second opening corresponding to the first transition region and a hole region; a light emitting element disposed in the first opening on the insulating structure and located in the display region; and a first encapsulation layer located in the first transition region and covering the insulating structure.