Connection Panel Pad Layout for Uniform Driver Chip Contact
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Solution Overview
Problem
Existing display devices face issues with sub-optimal contact between the display driver chip and the connection panel, leading to unreliable coupling.
Innovation Solution
A connection panel unit with a chip coupling region and pads that include input and output regions, where the ratio of pressure applied to output pads to input pads is optimized (0.8 to 1.2), and terminals with compressible buffers to ensure uniform contact distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the display driver chip is coupled to the connection panel, then electrical connection is established, but the contact between the display driver chip and the connection panel is sub-optimal leading to unreliable coupling
Solution Approach 1:
The pad structure is designed with different regions (input region and output region) having different properties. The input region has a larger area than the output region, creating local quality variations that optimize pressure distribution across different contact zones, thereby improving both contact uniformity and coupling reliability
Solution Approach 2:
The pad area parameter is deliberately changed across different regions - the input region pad area is larger than the output region pad area. This parameter variation ensures uniform pressure distribution during bonding, resolving the contact uniformity issue while maintaining reliable electrical coupling
2Reliability
If pressure is applied to the pads during bonding, then electrical connection is established, but non-uniform pressure distribution leads to sub-optimal contact
Solution Approach 1:
Different regions of the pad (input vs. output) are designed with different areas to create local quality differences. This ensures that pressure is distributed uniformly across the entire pad structure during bonding, preventing concentration of stress in specific areas and improving connection reliability
Solution Approach 2:
The pad design creates an equipotential pressure distribution across the input and output regions by adjusting the relative areas. The larger input region compensates for potential pressure concentration, ensuring that both regions experience comparable pressure levels during bonding, thereby achieving uniform contact
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
Enhances the connection between the display driver chip and the connection panel, ensuring a uniform and reliable contact distribution for efficient electrical coupling.
Implementation Method 1
a buffer positioned between the terminal head and the base, and the buffer being compressible
Data Source
AI summary
A connection panel unit and a display device including the same are disclosed. The connection panel unit includes a connection panel having a chip coupling region and a link region, a pad coupled to the chip coupling region, and a display driver chip coupled to the pad. The chip coupling region includes an input region and an output region spaced apart from each other. The pads include input pads coupled to the input region and output pads coupled to the output region. The ratio of pressure applied to the output pads to the pressure applied to the input pads may be between 0.9 and 1.1. The present disclosure can form an improved contact between a display driver chip and a connection panel.