Panel Light-On Testing with Adjustable Backlight Display
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Solution Overview
Problem
Current panel light-on testing systems lack efficiency in determining defect causes and require extensive time and resources due to the need for manual inspection and fixture adjustments for panels of varying sizes.
Innovation Solution
A panel light-on apparatus and system that includes a display panel at the bottom of the workbench to provide backlight and display predetermined images, allowing real-time defect image overlay and adjustable display range to match panel sizes, along with a controller and input apparatus for marking and acquiring defect points.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual inspection and fixture adjustments are used for panels of varying sizes, then testing can be performed, but time and energy consumption increase
Solution Approach 1:
The display panel serves multiple functions: it acts as a backlight source and simultaneously displays predetermined images (including defect images from the manufacturing process) for comparison. This eliminates the need for separate fixtures and manual adjustments when testing panels of different sizes, as the display panel can dynamically adapt its content and brightness to match various panel types.
Solution Approach 2:
The system displays copied defect images from the manufacturing process on the display panel, allowing inspectors to compare these images with the actual tested panel in real-time. This copying approach eliminates the need for physical reference samples or manual note-taking, significantly reducing time consumption while maintaining inspection accuracy.
2Loss of information
If manual inspection is used to determine defect causes, then defect analysis can be performed, but the process lacks efficiency
Solution Approach 1:
The system provides immediate visual feedback by displaying predetermined images (including defect images captured during manufacturing) on the display panel simultaneously with the backlight. Inspectors can directly compare the tested panel against these reference images in real-time, eliminating delays associated with manual defect analysis and information retrieval, thus improving both information availability and determination efficiency.
Solution Approach 2:
Defect images from the manufacturing process are captured and stored in advance. During light-on testing, these pre-captured images are immediately displayed on the display panel for comparison, eliminating the need for inspectors to manually search for or recreate reference images during the testing phase, thereby significantly improving defect determination efficiency.
3Manufacturing precision
If fixture changes are made for different panel sizes, then accurate testing can be performed, but time and energy are wasted
Solution Approach 1:
The display panel functions as a universal solution for all panel sizes, serving both as a backlight source and an image display device. By adjusting the display content and brightness levels, the same display panel can accommodate different panel sizes without requiring physical fixture changes, thereby maintaining testing accuracy while eliminating the energy waste associated with repeated fixture adjustments.
Solution Approach 2:
The display panel dynamically adjusts its display content and brightness characteristics to match the specific panel being tested. This dynamic adaptation allows the system to maintain optimal testing conditions for various panel sizes without physical reconfiguration, reducing energy consumption while preserving testing precision.
Data Source
AI summary
A panel light-on apparatus, panel light-on testing system and panel light-on testing method are provided. Wherein, the panel light-on apparatus comprises a supporting member; a workbench provided on the supporting member to hold and secure a tested panel; and a display panel located at bottom of the workbench to provide a backlight to the tested panel and display a predetermined image, wherein the predetermined image is projected to the tested panel and overlapped with an image displayed by the tested panel. Through adding the display panel, not only a backlight for the tested panel, but also real-time displaying defect images are provided to assist in determining the cause of the defect; and the display range of the display panel can be adjusted in accordance with the sizes of different tested panels to achieve the purpose of light-proofing of other non-test panel areas on the workbench.