Rotating Crossbar Tester for Flexible Display Pressure and Hardness
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Solution Overview
Problem
Existing testers for display screen manufacturing are inadequate for fully assessing the performance of flexible OLED displays, as they primarily rely on pencil hardness tests, which do not adequately capture pressure resistance and bending-proof characteristics, leading to the need for multiple specialized test equipment and inefficiencies.
Innovation Solution
A multi-functional tester that combines pressure and hardness testing capabilities, featuring a base, stage, and test frame with a rotating crossbar, balance weight, and counterweight, allowing for the same device to measure pressure resistance and hardness of planar materials by switching between pressure and hardness test assemblies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple specialized test equipments are used for pressure resistance and hardness testing, then testing capability is improved, but device complexity and equipment redundancy increase
Solution Approach 1:
The tester integrates both pressure resistance testing and hardness testing functions into a single device. The test frame can accommodate different test assemblies (pressure test assembly with pressure sensor and hardness test assembly with indentation indenter), allowing one device to perform multiple testing functions that previously required separate equipment
Solution Approach 2:
The patent combines previously separate pressure resistance tester and hardness tester into a unified device. The test frame, stage, and control system are shared resources, while the test assemblies can be swapped or configured for different testing modes, merging multiple functions into one integrated system
2Ease of operation
If traditional pencil hardness test is used, then testing simplicity is maintained, but measurement precision and performance assessment accuracy deteriorate
Solution Approach 1:
The patent replaces the traditional subjective pencil hardness evaluation with objective measurement systems. For pressure resistance, a pressure sensor quantitatively measures the force required to penetrate the test piece. For hardness, an indentation indenter with controlled loading provides precise measurement, replacing the qualitative pencil grading method while maintaining operational simplicity through automated control
3Measurement precision
If separate test equipments are used for different performance parameters, then measurement precision is improved, but productivity and testing efficiency deteriorate
Solution Approach 1:
The integrated tester allows multiple testing functions to be performed within a single device framework. The control system can manage different test assemblies and switch between pressure resistance and hardness testing modes, enabling comprehensive performance assessment without requiring multiple separate equipment setups, thereby improving testing efficiency while maintaining precision
Solution Approach 2:
By merging the pressure resistance testing and hardness testing functions into one device with shared infrastructure (test frame, stage, control system), the patent eliminates the need to move samples between different equipment or set up separate testing stations, streamlining the testing workflow and improving productivity
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
Enables reliable and cost-effective testing of both pressure resistance and hardness on the same instrument, expanding its application scope and reducing equipment redundancy while ensuring test reliability.
Implementation Method 1
a balance weight and a second end of the cross bar is connected with a connecting part, and a counterweight is further arranged on the connecting part
Implementation Method 2
the test frame comprises a floor stand and a cross bar hinged by a rotating shaft... as the cross bar rotates about the rotating shaft, the test device is in contact with the test piece for testing
Data Source
AI summary
Discloses is a pressure and hardness tester of a planar material, comprising a base, a stage, a test frame and a test device. The test piece is flatly extended and fixed on the stage. The test frame comprises a floor stand and a cross bar hinged by a rotating shaft. The floor stand and the stage are fixedly connected with the base. One end of the cross bar is provided with a balance weight and the other end of the cross bar is provided with a counterweight and a connecting part. The connecting part is used to connect the test device including a pressure test assembly or a hardness test assembly and make the test device right opposite to the stage. After the cross bar rotates about the rotating shaft, the test device contacts with the test piece for testing a pressure resistance or a hardness of the test piece.