Display Panel Component Area Light Transmittance
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Solution Overview
Problem
Current display panels face challenges in maximizing the transmissive area for components like cameras and sensors while maintaining high image quality, as the auxiliary pixel circuit often overlaps with the component area, reducing light transmittance and image resolution.
Innovation Solution
The display panel design includes a substrate with a main display area, a component area, and a peripheral area, featuring a pattern layer with concentric patterns that overlap the auxiliary display element, allowing for a transmissive area with high light transmittance and improved image quality by separating the auxiliary pixel circuit from the component area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the auxiliary pixel circuit is placed in the component area to drive the auxiliary display element, then the device complexity is reduced, but the light transmittance of the component area decreases and image quality deteriorates
Solution Approach 1:
The patent resolves the spatial conflict by transitioning from a two-dimensional planar layout to a three-dimensional stacked architecture. The auxiliary pixel circuit is positioned in the peripheral area, while the auxiliary display element is vertically stacked above the component area, allowing light to pass through the component area without being blocked by circuit components. This vertical arrangement eliminates the overlap between the auxiliary pixel circuit and the component area, thereby maintaining high light transmittance while keeping the circuit layout manageable.
2Area of stationary object
If the auxiliary pixel circuit is placed in the component area, then the area utilization is improved, but the image resolution and quality deteriorate due to overlap
Solution Approach 1:
The patent achieves high area utilization by utilizing the vertical dimension. The auxiliary display element is positioned in the third dimension above the component area, allowing the component area to serve dual purposes: as a structural support layer and as a transparent region for light transmission. This vertical stacking enables the auxiliary pixel circuit to be located in the peripheral area while maintaining excellent image quality and high resolution in the component area, as no circuit elements overlap with the light path.
3Illumination intensity
If a pattern layer with concentric patterns is added to overlap the auxiliary display element, then the light transmittance and image quality are improved, but the device complexity increases
Solution Approach 1:
The pattern layer with concentric patterns is applied locally only in the component area where the auxiliary display element is positioned, rather than across the entire display panel. This localized approach improves light transmittance and reduces ghosting effects in the critical component area without unnecessarily increasing the complexity of the overall device structure. The concentric patterns are strategically placed to optimize optical performance where needed while keeping other areas simple.
Data Source
AI summary
A display panel includes: a substrate including a main display area, a component area, and a peripheral area; a main pixel circuit and a main display element connected to the main pixel circuit, the main pixel circuit and the main display element being located in the main display area; an auxiliary display element located in the component area; a an auxiliary pixel circuit located in an area other than the component area not to overlap the auxiliary display element; and a pattern layer arranged between the substrate and the auxiliary display element to overlap the auxiliary display element, the pattern layer including a plurality of patterns having a concentric shape in a plan view.