Display Panel Light Shielding Layer for Sensing Region
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Solution Overview
Problem
Electronic devices with display panels and sensing elements face the challenge of reducing the visibility of the sensing region and element to enhance user experience, as customers expect these components to be inconspicuous.
Innovation Solution
A display panel design incorporating a capping substrate, a light shielding layer with holes, and a transparent material is used, where the light shielding layer is positioned between the capping substrate and the sensing element, and the transparent material is placed under the light shielding layer or within the holes, to minimize visibility while maintaining the sensing functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a light shielding layer is added to reduce sensing region visibility, then the visibility of the sensing element is reduced, but the structural complexity of the display panel increases
Solution Approach 1:
The light shielding layer is integrated within the existing display panel structure, nested between the capping substrate and the sensing element. This nesting approach incorporates the light shielding function without adding external components, thereby reducing visibility while minimizing increases in overall structural complexity
Solution Approach 2:
The light shielding layer serves multiple functions: it shields light to reduce sensing region visibility, maintains the structural integrity of the display panel, and allows light transmission through its holes for sensing operation. This multi-functionality reduces the need for separate components, addressing the complexity issue
2Reliability
If a light shielding layer with holes is used to reduce visibility, then the sensing functionality is maintained, but the manufacturing precision requirements increase
Solution Approach 1:
The light shielding layer is designed with multiple holes instead of a continuous structure. This segmentation allows light to pass through specific points for sensing while maintaining overall light shielding. The segmented design provides manufacturing tolerance, as individual hole variations have less impact on overall functionality compared to a continuous structure requiring perfect precision
Solution Approach 2:
The light shielding layer has different properties in different regions: it is opaque in most areas for light shielding, but has transparent holes in specific locations for sensing. This local quality variation allows the structure to meet different functional requirements in different zones, reducing overall manufacturing precision requirements by allowing variability in non-critical areas
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration reduces the visibility of the sensing region and element, improving user experience by allowing users to barely see them with the naked eye while ensuring effective light transmission and sensing capabilities.
Implementation Method 1
The light shielding layer is disposed under the capping substrate... The plurality of holes and the transparent material correspond to the sensing region
Implementation Method 2
The transparent material is disposed under the light shielding layer... The holes and the transparent material correspond to the sensing region
Data Source
AI summary
A display panel is provided. The display panel includes a sensing region. The display panel includes a capping substrate, a light shielding layer, and a transparent material. The light shielding layer is disposed under the capping substrate. The light shielding layer includes a plurality of holes. The transparent material is disposed under the light shielding layer. The plurality of holes and the transparent material correspond to the sensing region.