Transparent Display Substrate Transparency Test Using Dual-Color Reference
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Solution Overview
Problem
Existing methods for testing the transparency effect of transparent display substrates are inaccurate due to disturbances from ambient light, which affects the reliability of the brightness contrast measurements.
Innovation Solution
A device and method utilizing a transparency identification module, an optical measurement unit, and a reference object with different colored regions to calculate an identification degree by measuring brightness differences before and through the transparent display substrate, thereby isolating the impact of ambient light and enhancing test accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If brightness measurement is performed under ambient light conditions, then the test can be conducted in normal environment, but the measurement precision deteriorates due to ambient light interference
Solution Approach 1:
The patent segments the brightness measurement into two separate components: the reference object brightness (without transparent display substrate) and the transparent display substrate brightness (with substrate). By measuring and comparing these segmented components, the system eliminates ambient light interference while maintaining environmental flexibility.
Solution Approach 2:
The patent performs excessive measurement by taking multiple brightness readings under the same ambient light conditions - first measuring the reference object alone, then measuring the reference object through the transparent display substrate. This partial repetition of measurements under identical environmental conditions allows mathematical elimination of the ambient light factor.
2Device complexity
If brightness contrast parameter is used to evaluate transparency, then the evaluation method is simple, but the reliability deteriorates due to ambient light disturbance
Solution Approach 1:
The patent introduces a reference object with known brightness characteristics as an intermediary element. This reference object serves as a mediator between the light source and the transparent display substrate, allowing the system to calculate and eliminate ambient light effects through comparative measurement, thereby improving reliability without significantly increasing complexity.
3Ease of operation
If transparency effect is measured using conventional brightness comparison, then the measurement process is straightforward, but the measurement precision deteriorates under varying ambient light conditions
Solution Approach 1:
The patent performs preliminary measurement of the reference object brightness under the same ambient light conditions before measuring the transparent display substrate. This preliminary action captures the ambient light characteristics, which are then used to correct and compensate for ambient light interference in the subsequent transparency measurement, improving precision without complicating the overall process.
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 method effectively determines the transparency effect of the transparent display substrate by measuring the influence on the identification degree of the reference object, leading to improved test accuracy and reliability, regardless of ambient light conditions.
Implementation Method 1
The optical measurement unit is configured to directly measure brightness of the two kinds of regions of different colors of the reference object to acquire a first brightness difference
Data Source
AI summary
Embodiments of the present invention provide a device and a method for testing transparency effect of a transparent display substrate. The device comprises a transparency identification module, an optical measurement unit and a reference object including two kinds of regions of different colors. The optical measurement unit is able to directly measure brightness of the two kinds of regions of different colors of the reference object to acquire a first brightness difference, and to measure brightness of the two kinds of regions of different colors of the reference object through the transparent display substrate to acquire a second brightness difference. Based on the first brightness difference and the second brightness difference, the transparency identification module calculates identification degree ID of the transparent display substrate according to the equation:ID=ΔL2ΔL1×100%,where ΔL1 is the first brightness difference and ΔL2 is the second brightness difference. Embodiments of the present invention may eliminate the influence of ambient light on the test and increase the test accuracy of the transparent display substrate.