Display Device Bottom Metal Layer Hole Pattern for Component Area
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Solution Overview
Problem
Display devices face challenges in maintaining image display capabilities in areas where electronic components are integrated, requiring innovative designs to balance component placement and image quality.
Innovation Solution
A display device structure featuring a substrate with a main display area, a component area, and a peripheral area, including a bottom metal layer with a hole corresponding to a transmission area, and an organic layer with a conductive pattern, allowing for image display even in areas with electronic components, using materials like ytterbium and titanium for enhanced conductive patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If electronic components are integrated in the display area to increase functionality, then device functionality is improved, but image display quality deteriorates
Solution Approach 1:
The display area is divided into a main display area and a component area, with the component area further containing a transmission area. This segmentation allows electronic components to be placed in the component area while maintaining image display capability in the transmission area, thus resolving the contradiction between functionality and image quality
Solution Approach 2:
The organic layer is configured with different structures in different regions: in the transmission area, it includes a hole pattern with lower coverage ratio, while in non-transmission areas it has full coverage. This local differentiation optimizes light transmittance in the component area while maintaining component functionality
2Adaptability or versatility
If a bottom metal layer is added for component integration, then device functionality is improved, but light transmittance in the component area deteriorates
Solution Approach 1:
The bottom metal layer is designed with a hole corresponding to the transmission area, creating local quality differentiation. The metal layer provides electromagnetic shielding and component support in non-transmission areas while allowing light passage in the transmission area, thus maintaining both functionality and light transmittance
Solution Approach 2:
The hole in the bottom metal layer acts as an intermediary structure that reconciles the conflicting requirements of electromagnetic shielding (for component functionality) and light transmission (for image display). The hole allows light to pass through while the surrounding metal layer provides necessary shielding
3Reliability
If the organic layer has full coverage for component protection, then component reliability is improved, but light transmittance in the transmission area deteriorates
Solution Approach 1:
The organic layer coverage is locally optimized: in the transmission area it has reduced coverage with a hole pattern that allows light transmission, while in other areas it provides full coverage for component protection. This resolves the contradiction between protection and transmittance
Solution Approach 2:
Instead of providing full organic layer coverage everywhere, the patent applies partial coverage in the transmission area with a hole pattern. This partial action maintains sufficient protection in non-critical areas while enabling light transmission where needed
Data Source
AI summary
A display device including a substrate including a main display area, a component area having a transmission area, and a peripheral area outside the main display area, a first thin film transistor and a first display element arranged over the main display area, a second thin film transistor and a second display element arranged over the component area, a bottom metal layer arranged between the substrate of the component area and the second thin film transistor and including a hole corresponding to the transmission area, and an organic layer arranged in the transmission area and having a hole pattern defined along an edge of the hole of the bottom metal layer.