Flexible Display Bending Fixture for Accurate Shift Measurement
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Solution Overview
Problem
Existing technologies lack a device and method to accurately and intuitively test the shifting of film materials in flexible OLED displays during bending with low cost, as CAE simulation models often provide inaccurate feedback.
Innovation Solution
A fixture with rotatably connected support plates is used to fix and bend a flexible display module, allowing observation of shifting through transparent regions and using a test instrument to measure shifting values accurately and intuitively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If CAE simulation model is used to obtain shifting value, then testing cost is reduced, but measurement precision deteriorates due to inaccurate feedback compared to real values
Solution Approach 1:
The patent creates a physical copy/model of the bending test environment using support plates and transparent regions that replicate the actual display module bending conditions. This physical model allows direct optical observation and measurement of shifting, providing accurate feedback while maintaining low testing costs compared to expensive sophisticated measurement equipment.
Solution Approach 2:
The patent introduces transparent regions and marking lines as intermediary elements that facilitate the measurement process. These intermediaries enable the test instrument to accurately capture and measure shifting by providing visual references and transmission paths, bridging the gap between the bending structure and measurement device.
2Measurement precision
If transparent region is added to support plate for observation, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The support plate is segmented into different functional regions: transparent regions for observation and non-transparent regions for structural support. This segmentation allows each region to perform its specific function optimally while keeping the overall device simple. The marking lines are also segmented at specific positions to provide reference points for measurement without complicating the entire structure.
Solution Approach 2:
The transparent regions are strategically positioned only where observation and measurement are needed, rather than making the entire support plate transparent. This local quality approach provides the necessary measurement capability while maintaining structural integrity and simplicity in other areas of the device.
Data Source
AI summary
A fixture for testing bending shifting of a flexible display module and a test method thereof are provided. The flexible display module includes a bending region and a first non-bending region and a second non-bending region located at two sides of the bending region, the flexible display module is bent through the bending region, and the first non-bending region or the second non-bending region has an under-screen opening; the fixture includes a first support plate and a second support plate rotatably connected, the first support plate is configured to be fixedly connected with the first non-bending region, and the second support plate is configured to be fixedly connected with the second non-bending region; the first support plate or the second support plate has a transparent region, and the transparent region is disposed for observation of shifting at the under-screen opening of the flexible display module in a bent state.