Spacer Metal Layer for OLED Substrate Shock Resistance
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Solution Overview
Problem
Organic light-emitting display apparatuses face challenges in maintaining display characteristics and mechanical strength, particularly under external shocks, due to the lack of effective reinforcement between the display substrate and sealing substrate.
Innovation Solution
Incorporating a spacer with a metal layer disposed below it to maintain the interval between the display substrate and sealing substrate, enhancing mechanical strength and preventing deformation from external shocks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a spacer is disposed between the display substrate and sealing substrate to maintain interval, then the display characteristics are maintained, but the mechanical strength is insufficient under external shocks
Solution Approach 1:
The spacer is constructed as a composite structure combining a lower spacer layer and an upper spacer layer with different materials and properties. The lower spacer layer provides foundational support while the upper spacer layer enhances mechanical strength and shock resistance, creating a composite material solution that simultaneously maintains display characteristics and improves mechanical strength.
Solution Approach 2:
The spacer is divided into multiple segments or layers (lower spacer layer and upper spacer layer) with distinct functions. This segmentation allows each layer to be optimized for specific requirements - the lower layer for interval maintenance and the upper layer for enhanced mechanical strength - thereby resolving the contradiction between maintaining display characteristics and improving shock resistance.
2Reliability
If the interval between display substrate and sealing substrate is maintained using conventional spacer, then display characteristics are preserved, but deformation occurs under external pressures
Solution Approach 1:
The composite spacer structure with lower and upper layers of different materials provides both the interval maintenance function and enhanced structural stability. The multi-layer composite design distributes external pressures more effectively, preventing deformation while preserving display characteristics.
Solution Approach 2:
The spacer structure is pre-configured with its multi-layer construction before the display apparatus is assembled and subjected to external pressures. This preliminary structural arrangement ensures that the spacer is already optimized for both interval maintenance and shock resistance, preventing deformation before it occurs rather than correcting it afterward.
Data Source
AI summary
An exemplary embodiment of the present invention discloses an organic light-emitting display apparatus including: a display substrate including pixel areas and a non-pixel area; a sealing substrate disposed facing the display substrate; a spacer disposed in the non-pixel area of the display substrate, between the display substrate and the sealing substrate, and configured to maintain an interval between the display substrate and the sealing substrate; and a metal layer disposed under the spacer.