Display Substrate Penetration Holes Bonding Method
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Solution Overview
Problem
The manufacturing of display apparatuses faces challenges in achieving reliable electrical connections between displaying units and switch devices, leading to decreased production yields and deteriorated displaying quality due to faulty design and material stability issues in OLED and micro-LED displays.
Innovation Solution
The display apparatus design involves disposing displaying units and switch devices on different sides of a substrate with penetration holes filled by a bonding material, ensuring accurate electrical connections and improved reliability, applicable to various types of TFTs and lighting devices like micro-LEDs and OLEDs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If displaying units and switch devices are disposed on different sides of the substrate with penetration holes filled by bonding material, then electrical connection reliability is improved, but device complexity increases
Solution Approach 1:
The invention divides the display device into two separate substrates: a first substrate containing switch devices and a second substrate containing displaying units. This segmentation allows each substrate to be optimized independently for its specific function, improving electrical connection reliability while managing complexity through modular design.
Solution Approach 2:
The invention introduces penetration holes filled with conductive bonding material as an intermediary structure between the two substrates. This intermediary enables reliable electrical connections while maintaining physical separation of the substrates, thus improving reliability without requiring direct contact between switch devices and displaying units.
2Manufacturing precision
If accurate patterning steps are performed for manufacturing semiconductive layers and conductive layers, then manufacturing precision is improved, but production time increases
Solution Approach 1:
The invention performs preliminary patterning of the substrate before forming the penetration holes. This preliminary action establishes precise reference patterns that guide subsequent processing steps, ensuring manufacturing precision is maintained while reducing the need for repeated adjustments and rework that would consume additional time.
3Reliability
If multiple layers and patterns are precisely positioned to meet electrical performance requirements, then electrical performance is improved, but manufacturing complexity increases
Solution Approach 1:
The invention transitions from a single-substrate three-dimensional stacking approach to a dual-substrate configuration where precise positioning is achieved through planar alignment of two separate substrates. This dimensional change simplifies the manufacturing process by allowing independent optimization of each substrate's layer structure while maintaining overall electrical performance.
Data Source
AI summary
A display apparatus includes at least one substrate with several penetration holes, several displaying units and several switch devices disposed at different sides of the at least one substrate, and at least one bonding material filling up the penetration holes, wherein the displaying units and the switch devices are connected to each other through the at least one bonding material.