Display Panel Grounding Structure for ESD Shielding and Adhesion
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Solution Overview
Problem
Organic light emitting displays are susceptible to static electricity, which can reduce image quality and cause potential damage to internal components, and the laminate layers can separate, leading to further image quality issues.
Innovation Solution
A display apparatus with a data driving part shielded by a connection member that forms a ground path from the display panel to the printed circuit board, featuring a reinforcement part and a connection member with varying thicknesses to enhance adhesive force and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional data driving part structure is used, then the device complexity is low, but the reliability is reduced due to static electricity impact and layer separation
Solution Approach 1:
The connection member integrates multiple functions: it serves as an adhesive layer to bond the data driving part to the reinforcement part, as a ground path to conduct static electricity away, and as a shielding structure to protect the data driving part. This merging of functions into a single component improves reliability without proportionally increasing device complexity.
Solution Approach 2:
The connection member is designed as a multi-functional element that simultaneously provides electrical connection, mechanical bonding, and electrostatic shielding. This universal component approach allows the system to achieve enhanced protection and reliability while minimizing the addition of separate components.
2Strength
If the connection member has uniform thickness, then the manufacturing precision is high, but the adhesive force is reduced due to step differences
Solution Approach 1:
The connection member features variable thickness with different regions optimized for different functions: a first thickness in the first region for optimal adhesive bonding to the data driving part, and a second thickness in the second region for compensating step differences with the reinforcement part. This local quality variation maximizes adhesive force while maintaining manufacturability.
Solution Approach 2:
The thickness parameter of the connection member is deliberately varied across different regions rather than maintained uniformly. This parameter change allows the connection member to adapt to the topography of underlying components, ensuring maximum contact area and adhesive strength while compensating for manufacturing tolerances.
3Strength
If the connection member includes an inclined surface, then the ease of manufacture is high, but the adhesive force is reduced due to poor contact
Solution Approach 1:
The connection member is designed with a substantially flat upper surface in the first region to maximize contact area and adhesive force with the data driving part. This local flatness requirement is applied only where needed for bonding, while other regions may have different geometries, balancing manufacturing ease with bonding performance.
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
The solution effectively shields the data driving part from static electricity, improves the ground path, and enhances adhesive force, resulting in improved durability and lifespan of the display apparatus.
Implementation Method 1
the connection member covering the data driving part, thereby shielding the data driving part from static electricity
Implementation Method 2
through the connection member, the ground path may be formed from the display panel to the printed circuit board
Implementation Method 3
the connection member may include no inclined surface, so that an adhesive force between the connection member and the underlying reinforcement part or the data driving part may be further improved
Data Source
AI summary
A display apparatus includes a display panel including a display area having a plurality of pixels, a first pad area disposed around the display area, a data driving part located on the first pad area, and a connection member located on the data driving part. The connection member has different thicknesses according to a portion thereof disposed at the data driving part.