OLED Display Sealing Substrate With Conductor Branches
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Solution Overview
Problem
Organic light emitting diode (OLED) displays are susceptible to moisture and oxygen, which degrade their functionality, and existing sealing methods are inefficient, leading to issues with uniform luminance and increased manufacturing costs.
Innovation Solution
The use of a sealing substrate with a specific conductor configuration, including first and second conductors with center and branch structures, and arranging members, which eliminates the need for via holes and associated manufacturing processes, thereby enhancing sealing capabilities and reducing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional sealing methods are used, then the sealing structure is simple, but the sealing capability is insufficient and manufacturing costs increase
Solution Approach 1:
The sealing structure is segmented into multiple functional layers: a sealing substrate with arranging members, conductors with branch structures, and corresponding arranging holes. This segmentation allows each component to perform its specific function while collectively achieving superior sealing capability without excessive overall complexity.
Solution Approach 2:
The arranging members are embedded within the sealing substrate, and the conductors are nested within grooves of the sealing substrate. This nested configuration integrates multiple functions into a compact structure, improving sealing capability while controlling structural complexity.
2Ease of manufacture
If via holes are used for conductor connection, then electrical connection is achieved, but manufacturing processes and costs increase
Solution Approach 1:
The conductors are pre-formed with branch structures and arranging holes are pre-defined in the sealing substrate before assembly. This preliminary preparation eliminates the need for complex via hole drilling and plating processes during manufacturing, simplifying the process while ensuring reliable electrical connections through the pre-configured conductor branches.
3Manufacturing precision
If conductors are formed without arranging members, then device complexity is reduced, but position alignment precision deteriorates
Solution Approach 1:
Arranging members serve as intermediary elements between the sealing substrate and conductors, providing precise positioning references. These arranging members with corresponding arranging holes ensure accurate alignment during assembly, achieving high manufacturing precision while adding minimal structural complexity.
4Reliability
If sealing substrate thickness is increased, then sealing capability is improved, but manufacturing cost and device complexity increase
Solution Approach 1:
The sealing substrate incorporates localized features such as grooves for conductor embedding and specific regions for arranging members, rather than uniformly increasing thickness throughout. This local quality approach provides enhanced sealing capability at critical areas while controlling overall structural complexity and manufacturing cost.
Data Source
AI summary
An organic light emitting diode display includes: a substrate; a display device formed on the substrate, and including a common power line and a common electrode; a sealing substrate attached to the substrate by a junction layer surrounding the display device, the sealing substrate sealing the display device with the substrate; a first conductor formed over an outer side, a lateral side, and an inner side of the sealing substrate, the first conductor being for supplying a first electrical signal to the common power line; a second conductor formed on the inner side, the lateral side, and the outer side of the sealing substrate, the second conductor being for supplying a second electrical signal to the common electrode; and a plurality of arranging members formed into the sealing substrate, the first conductor, and the second conductor, the arranging members being for arranging positions of the sealing substrate, the first conductor, and the second conductor.