Zero-Bezel Display Routing Through Encapsulation for Seamless Screens
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Solution Overview
Problem
Multi-screen light emitting display apparatuses suffer from a sense of discontinuity in images due to bezels between adjacent display units, which reduces viewer immersion and experience.
Innovation Solution
A light emitting display apparatus with a zero bezel design, where the display area extends to the edge of the substrate without a visible bezel, and a multi-screen display apparatus assembled from these units to prevent image discontinuity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a bezel is provided to protect the light emitting device, then reliability is improved, but the bezel width increases and creates a sense of discontinuity in multi-screen displays
Solution Approach 1:
The patent extracts the protective function from the traditional bezel structure and relocates it to the encapsulation layer that directly covers the light emitting device. This allows the bezel area to be minimized or eliminated while maintaining protection through the encapsulation structure that seals the light emitting device against external materials.
Solution Approach 2:
The patent transitions from a lateral bezel structure (horizontal dimension) to a vertical encapsulation structure (depth dimension). The encapsulation layer provides protection in the vertical direction, allowing the horizontal bezel width to be reduced or eliminated while maintaining protective functionality.
2Stability of the object's composition
If the bezel width is reduced to eliminate discontinuity, then image continuity is improved, but the light emitting device becomes vulnerable to external materials
Solution Approach 1:
The protective function is extracted from the bezel and transferred to the encapsulation layer, which directly covers and seals the light emitting device. This allows the bezel width to be minimized for image continuity while the encapsulation layer provides the necessary protection against water and moisture penetration.
Solution Approach 2:
The encapsulation layer acts as an intermediary between the light emitting device and the external environment. It provides a protective barrier that prevents harmful external materials from reaching the light emitting device, enabling the bezel to be minimized or eliminated without compromising protection.
3Ease of operation
If a zero bezel design is implemented, then viewer immersion is improved, but the routing of pixel driving lines becomes more complex
Solution Approach 1:
The patent routes pixel driving lines through the encapsulation layer in the vertical dimension rather than through a lateral bezel area. This allows the display to achieve a zero bezel appearance while the routing structure is positioned in the depth dimension, minimizing visual impact and maintaining viewer immersion.
Solution Approach 2:
The routing structure is nested within or integrated with the encapsulation layer, allowing the pixel driving lines to be conducted through the encapsulation layer without requiring additional lateral space. This nesting approach enables zero bezel design while managing the complexity of line routing within the existing protective structure.
Data Source
AI summary
A light emitting display apparatus may include a display portion including a plurality of pixel areas disposed on a substrate, a circuit layer including a plurality of pixel driving lines disposed in the plurality of pixel areas, a light emitting device layer including a light emitting layer disposed on the circuit layer in the plurality of pixel areas, an encapsulation layer disposed on the light emitting device layer, and a routing portion surrounding a front periphery portion and an outer surface of the substrate and including a plurality of routing lines which pass through the encapsulation layer disposed at the front periphery portion of the substrate to be connected to the plurality of pixel driving lines.