LCD Panel Reliability Testing Device Using Pre-Assembly Aging
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Solution Overview
Problem
Current methods for liquid crystal display (LCD) panel reliability testing are inefficient and costly due to the need for assembled panels and bulky, expensive testing devices, which increase manufacturing time and costs.
Innovation Solution
A device comprising a connection module with a probe, adjustment module, transfer module, multiplexing module, and feedback module for precise connection and adjustment of probes to test pads, along with a reliability chamber control module and aging module, allows for panel reliability testing before assembly, reducing manufacturing time and enhancing efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If reliability testing is performed on assembled LCD panels, then testing accuracy is improved, but manufacturing time increases and manufacturing cost increases
Solution Approach 1:
The patent applies preliminary action by performing reliability testing on the LCD panel before final assembly. The testing device connects to the panel through a connection module that interfaces with test pads on the panel, allowing aging and reliability tests to be conducted on the panel alone rather than requiring complete assembly. This early testing approach identifies defects before assembly, saving time and resources.
Solution Approach 2:
The patent extracts the testing function from the assembled product context and applies it to the panel in isolation. By using a dedicated testing device with connection modules that interface directly with test pads on the panel, the system separates the testing operation from the assembly requirement, enabling standalone panel testing without needing driver circuits, backlight modules, or other assembly components.
2Reliability
If reliability testing is performed on assembled LCD panels, then testing accuracy is improved, but manufacturing cost increases
Solution Approach 1:
The patent extracts the testing function from the assembled product context and applies it to the panel in isolation. By using a dedicated testing device with connection modules that interface directly with test pads on the panel, the system separates the testing operation from the assembly requirement, enabling standalone panel testing without needing driver circuits, backlight modules, or other assembly components.
Solution Approach 2:
The patent applies preliminary action by performing reliability testing on the LCD panel before final assembly. The testing device connects to the panel through a connection module that interfaces with test pads on the panel, allowing aging and reliability tests to be conducted on the panel alone rather than requiring complete assembly. This early testing approach identifies defects before assembly, saving time and resources.
3Reliability
If bulky testing devices are used for LCD panel reliability testing, then testing capability is improved, but device portability deteriorates and equipment cost increases
Solution Approach 1:
The patent segments the testing system into modular components: a connection module with probes and test pad interfaces, a control module for test sequence management, and a processing module for analysis. This segmentation allows the testing functionality to be distributed and potentially integrated into existing production line equipment rather than requiring a single bulky standalone device.
Solution Approach 2:
The testing device is designed with universal capabilities to test multiple panel types and configurations through the standardized connection module interface. The control module can manage various test sequences (aging, voltage regulation, switching operations), making the device multi-functional and reducing the need for specialized equipment for each test type.
Data Source
AI summary
A device for panel reliability testing and method thereof are proposed. The device includes a connection module, for connecting the panel and an aging module; a reliability chamber control module for sending a voltage regulation command to a bias module and/or a switch control command to the aging module; the bias module, for regulating voltage and transmitting information about voltage regulation to the aging module; and the aging module, for performing an aging operation on the panel depending on the switch control command sent from the reliability chamber control module and the information about voltage regulation transmitted from the bias module. Compared with the prior art, LCD panels undergo the aging testing before being packaged, thereby shortening a time period of manufacturing LCD panels and enhancing production efficiency.