OLED Lighting Module FPCB Coupling Stepped Glass
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Solution Overview
Problem
The existing technologies face difficulties in stably coupling a power supply to the stepped glass surface of an OLED illumination plate, where a transparent electrode is formed, due to the surface's geometry, which complicates the assembly of OLED lighting modules.
Innovation Solution
The use of a flexible printed circuit board (FPCB) and an anisotropic conductive film (ACF) to securely connect the power terminal to the OLED illumination plate, ensuring a stable electrical connection and assembly process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a power supply terminal is directly coupled to the stepped glass surface of an OLED illumination plate, then the assembly process is simplified, but the connection stability deteriorates due to the stepped surface geometry
Solution Approach 1:
The patent introduces a flexible printed circuit board (FPCB) as an intermediary component between the power supply terminal and the stepped glass surface. The FPCB includes a flat lower surface that contacts the stepped surface through a recess, distributing the contact area and providing stable mechanical support. This mediator resolves the contradiction by enabling both easy assembly (through the flat contact surface) and reliable connection (through distributed contact area and reinforcement structure).
Solution Approach 2:
The patent transitions from direct point-to-point contact on the stepped surface to a distributed areal contact through the FPCB's lower surface. By adding the dimensional aspect of a flat contact plane that spans multiple levels of the stepped surface, the solution achieves both assembly ease and connection stability simultaneously.
2Reliability
If a rigid circuit board is used to supply power to the OLED illumination plate, then the electrical connection is stable, but the adaptability to the stepped surface geometry deteriorates
Solution Approach 1:
The patent employs a flexible printed circuit board that can dynamically adapt to the stepped surface geometry. The FPCB's flexibility allows it to conform to the recess and stepped features while maintaining stable electrical connections, resolving the contradiction between rigidity for stable connection and flexibility for geometric adaptation.
Solution Approach 2:
The FPCB acts as a flexible thin film structure that can bend and conform to the stepped surface geometry. This flexible substrate maintains electrical connectivity while adapting to the complex three-dimensional surface, enabling both reliable electrical connection and geometric adaptability.
3Illumination intensity
If the transparent electrode is formed on the stepped border surface, then the OLED illumination function is achieved, but the difficulty in stable power coupling increases
Solution Approach 1:
The FPCB serves as a mediator that bridges the power supply terminal and the transparent electrode on the stepped surface. By providing a flat lower surface that contacts the recess and distributing the connection load, the FPCB simplifies the power coupling process while maintaining the necessary illumination function of the OLED.
Solution Approach 2:
The patent segments the power coupling function into two distinct interfaces: the FPCB's lower surface that contacts the stepped structure, and the upper surface that connects to the power terminal. This segmentation allows each interface to be optimized independently, reducing overall device complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution stabilizes the quality of the OLED lighting module, enabling mass production by effectively addressing the challenge of connecting power to the stepped surface, thereby enhancing the module's reliability and manufacturing efficiency.
Implementation Method 1
an anisotropic conductive film which couples and electrically conducts the transparent electrode and the connection terminal
Data Source
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AI summary
The present invention discloses a lighting module using an organic light emitting device (OLED) and particularly, a lighting module using the OLED which stably couples a power supply terminal to an electrode pad which is formed on a glass substrate of an OLED illumination plate.