Display Panel-Driver Bonding With Conductive Particle Groove Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electronic devices face challenges in achieving improved electrical connection characteristics between display panels and data drivers, which affect the reliability and efficiency of image display and input detection.
Innovation Solution
The implementation of a conductive particle within an adhesive layer between the display panel and data driver, with specific groove and groove arrangements, along with insulating and conductive layers, ensures stable electrical connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional adhesive layer is used between display panel and data driver, then the bonding function is provided, but the electrical connection characteristics are insufficient
Solution Approach 1:
The adhesive layer is constructed as a composite material system comprising an adhesive resin matrix embedded with conductive particles. This composite structure simultaneously provides bonding functionality and electrical conduction, resolving the contradiction between maintaining simple adhesive structure and achieving reliable electrical connection characteristics.
Solution Approach 2:
Conductive particles serve as intermediary elements within the adhesive layer, mediating the electrical connection between the display panel and data driver. These particles create conductive pathways through the adhesive resin, enabling electrical signal transmission while the adhesive resin maintains the structural bonding function.
2Reliability
If the groove length in the data driver is larger than the conductive particle diameter, then the conductive particle cannot make reliable contact, but making the groove very small increases manufacturing difficulty
Solution Approach 1:
The groove dimensions are precisely controlled within specific parameter ranges where the length and width are smaller than or equal to the conductive particle diameter. This parameter optimization ensures that each groove can accommodate exactly one conductive particle, guaranteeing reliable electrical contact while maintaining feasible manufacturing precision.
Solution Approach 2:
The data driver surface features locally differentiated groove structures at specific bonding positions, with each groove tailored to match the dimensions of conductive particles. This local quality enhancement ensures optimal particle-groove fit at critical electrical connection points without requiring high precision across the entire device structure.
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 electrical connection stability and reliability between the display panel and data driver, improving the overall performance of image display and input detection in electronic devices.
Implementation Method 1
a conductive particle disposed inside the adhesive resin and in contact with and electrically connected to the display panel and the data driver
Implementation Method 2
an adhesive resin in contact with the display panel and the data driver
Data Source
AI summary
An electronic device includes: a display panel including a first pad; a data driver including a second pad disposed to overlap the first pad in a thickness direction of the display panel and disposed on the display panel; and an adhesive layer disposed between the display panel and the data driver. The adhesive layer includes: an adhesive resin in contact with the display panel and the data driver; and a conductive particle disposed inside the adhesive resin and in contact with and electrically connected to the display panel and the data driver. The data driver includes a groove defined in a surface thereof facing the display panel, and a length of the groove in a first direction perpendicular to the thickness direction is smaller than or equal to a diameter of the conductive particle.