Display Device Data Driver Bonding Inspection via Resistance Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current display device inspection processes lack efficiency in detecting electrical defects, particularly in the bonding between the data driver and the display panel, which can lead to inaccurate and labor-intensive defect identification.
Innovation Solution
A display device equipped with a data driver that includes terminals in contact with the display panel through a conductive adhesive member, capable of detecting resistance values and transferring them to an external controller, allowing for automated bonding inspection and array inspection processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual inspection methods are used for bonding defects, then labor intensity is reduced, but inspection accuracy and efficiency deteriorate
Solution Approach 1:
The patent replaces manual mechanical inspection with an automated electrical measurement system. The data driver automatically measures resistance values at multiple terminals through the conductive adhesive member, substituting human operators with electronic detection equipment to achieve both high accuracy and efficiency simultaneously
Solution Approach 2:
The inspection system utilizes the data driver's own terminal structure and electrical characteristics to perform self-inspection. By measuring resistance values through its own terminals connected via conductive adhesive member, the system achieves automated defect detection without external inspection equipment
2Measurement precision
If comprehensive bonding inspection is performed, then defect detection accuracy improves, but inspection time increases
Solution Approach 1:
The patent performs preliminary electrical connection verification by measuring resistance values at multiple terminals before final product assembly. This preliminary inspection of bonding quality through electrical resistance measurement prevents defective products from proceeding to subsequent assembly steps, achieving comprehensive inspection without time loss
Solution Approach 2:
The system measures resistance values at multiple terminals simultaneously to detect bonding defects. By changing from single-point to multi-point resistance measurement, the system achieves comprehensive bonding inspection while maintaining fast measurement speed through parallel electrical testing
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 enables accurate and automated detection of electrical defects, improving the efficiency and accuracy of the inspection processes by displaying resistance values on a monitor, thus facilitating the identification of bonding defects.
Implementation Method 1
a data driver 200 including a plurality of terminals 201, 203, 205, and 206 in contact with a plurality of pads in an area which the data driver 200 is disposed through a conductive adhesion member
Data Source
AI summary
A display device including a display panel including a plurality of pixels connected to a plurality of data lines and a plurality of gate lines crossing the plurality of data lines; a data driver comprising a plurality of terminals in contact with a plurality of pads on the display panel through a conductive adhesive member and configured to detect a resistance value of the plurality of terminals; and a timing controller configured to transfer the resistance value to an external controller.