Shield Pattern Geometry for Display Light Transmittance
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Solution Overview
Problem
Display apparatuses face challenges in maintaining high transmittance for both light and sound functions while integrating various components within a compact, thin, and lightweight design, particularly in regions where both image display and functional operations coexist.
Innovation Solution
The display apparatus incorporates a shield pattern with specific geometries and materials, such as molybdenum, titanium, and silver, between electrodes and display elements to enhance light transmittance and functional efficiency, including a substrate with first and second electrodes and a shield pattern that overlaps these components, allowing for improved light transmission and reduced diffraction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If various components are integrated within the display area to expand functional region, then functional versatility is improved, but light transmittance deteriorates
Solution Approach 1:
The display area is divided into a main display area and a component area. The component area is further segmented into multiple regions where different functional components (sensors, cameras, etc.) can be independently arranged. This segmentation allows functional integration while maintaining separate optimization for each region, including dedicated light transmission paths for each component type.
Solution Approach 2:
The patent utilizes the vertical dimension by arranging components at different depths below the display surface. The component area is positioned in a space beneath the main display area, allowing light to pass through the display area while components are housed in the vertical space below, thus maintaining light transmittance while integrating multiple functions.
2Illumination intensity
If shield pattern is added to reduce diffraction and improve light transmittance, then optical performance is improved, but device complexity increases
Solution Approach 1:
The shield pattern is applied selectively only in the component area where diffraction issues occur, rather than across the entire display area. The pattern consists of specific geometric shapes (circles, squares, triangles) with predetermined sizes and spacing that are optimized for the local optical requirements of the component region, maintaining simplicity in the main display area while addressing diffraction locally.
3Adaptability or versatility
If component area is surrounded by main display area to integrate functions, then functional integration is improved, but manufacturing precision requirements increase
Solution Approach 1:
The component area is pre-defined with specific geometric boundaries and spatial relationships to the main display area during the design phase. Standardized positions and sizes for various components are predetermined within the component area, allowing for automated placement and reducing the need for complex manual alignment during manufacturing. The shield pattern geometry is also predetermined to simplify alignment requirements.
Data Source
AI summary
An electronic apparatus includes: a housing having a backside and lateral sides; a cover window arranged on the housing; a display apparatus arranged under the cover window; a sensor unit arranged under the display apparatus; and a camera unit arranged under the display apparatus. The display apparatus includes: a substrate; a plurality of first electrodes arranged over the substrate; a plurality of emission layers on the plurality of first electrodes; a second electrode overlapping the plurality of first electrodes and the plurality of emission layers; and a shield pattern arranged between the substrate and the plurality of first electrodes, and overlapping the plurality of first electrodes in a plan view; The shield pattern includes a first part and a second part apart from the first part, and the second electrode includes an opening arranged between the first part and the second part in the plan view.