Under-Display Panel Zoning for Light Blocking and High Transmittance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electronic devices face challenges in achieving improved transmittance in active areas, which affects the performance of embedded electronic modules.
Innovation Solution
The electronic device incorporates a display panel with defined areas, including a first area with higher light transmittance, a line area, and a transmission area. The display panel features a base layer, barrier layers, light blocking layers, insulating layers, and pixels arranged to optimize light transmittance and module performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a light blocking layer is disposed on the display panel, then external light interference is reduced, but light transmittance in the active area deteriorates
Solution Approach 1:
The display panel is divided into a first area (including display area, line area, and transmission area) and a second area adjacent to it. The light blocking layer is selectively disposed only in the first area, specifically covering the display area and line area while leaving the transmission area uncovered. This segmentation allows different regions to have different light transmittance characteristics, resolving the contradiction between blocking external light interference and maintaining high light transmittance where needed.
Solution Approach 2:
Different regions of the display panel are assigned different optical properties. The first area (display area and line area) has low light transmittance due to the light blocking layer to prevent external light interference, while the transmission area within the first area maintains high light transmittance by excluding the light blocking layer. This local differentiation of optical quality resolves the contradiction between needing light blocking and maintaining transmittance.
2Reliability
If multiple insulating layers and barrier layers are added to improve device reliability, then manufacturing complexity increases
Solution Approach 1:
The barrier layer and insulating layers are integrated into the existing display panel structure rather than being added as separate components. The first barrier layer is disposed on the base layer, the second barrier layer on the first barrier layer, and insulating layers are combined with the light blocking layer and transistor structure. This merging approach improves device reliability through enhanced protection and insulation while avoiding the manufacturing complexity of separate assembly processes.
Solution Approach 2:
The barrier layers and insulating layers serve multiple functions simultaneously: the barrier layers provide both moisture/oxygen protection and structural support, while the insulating layers provide electrical insulation and serve as part of the transistor structure. This multi-functionality improves device reliability without proportionally increasing manufacturing complexity, as the same layers perform multiple protective and functional roles.
Data Source
AI summary
An electronic device includes a display panel in which a first area including an electronic module, a display area, a line area and a transmission area, and a second area adjacent to the first area are defined, where the display panel includes a base layer, a light blocking layer disposed on the base layer, a plurality of insulating layers disposed on the base layer, a first pixel disposed in the first area, and a second pixel disposed in the second area, and an input sensor disposed on the display panel, where the input sensor includes sensing insulating layers. The first area has a higher light transmittance than the second area, the light blocking layer overlaps the display area and the line area, and the light blocking layer does not overlap the transmission area.