LCD Test Apparatus with Integrated LED and Heating Nozzle
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Solution Overview
Problem
Existing test apparatuses for liquid crystal display devices lack the capability to simulate a real operational environment, specifically in terms of light and heat, which is essential for accurate and reliable testing of array substrates.
Innovation Solution
A test apparatus equipped with a stage of light emitting diodes (LEDs) for simulating light conditions similar to a backlight unit and a heating nozzle for providing heat, along with a needle and microscope for applying test signals and measuring results, allowing for a comprehensive evaluation under realistic luminance and temperature conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a real operational environment with light and heat is applied to the array substrate during intensive testing, then the reliability and accuracy of the test results are improved, but the device complexity increases due to the need for additional illuminating and heating units
Solution Approach 1:
The patent combines the illuminating unit and heating unit into a single integrated testing system that simultaneously provides both light and heat to the array substrate. This merging of functions allows the apparatus to simulate the real operational environment of an LCD device more effectively, where both the backlight unit and driving circuit unit operate together, thereby improving test reliability while managing overall device complexity through functional integration.
2Measurement precision
If an illuminating unit and heating unit are added to simulate the real operational environment, then the measurement precision of the intensive test is improved, but the ease of operation deteriorates due to the increased complexity of operating multiple units
Solution Approach 1:
The testing apparatus is designed as a multi-functional device that can simultaneously perform illumination, heating, and electrical testing functions. The illuminating unit with multiple light sources and the heating unit with hot air supply work together with the electrical testing components to provide comprehensive operational environment simulation. This universal design allows a single apparatus to replace multiple separate testing devices, improving measurement precision while aiming to maintain ease of operation through integrated control.
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 apparatus enhances the reliability of the intensive test by accurately simulating a real operational environment, improving the quality and accuracy of the testing process for liquid crystal display devices.
Implementation Method 1
a plurality of light emitting diodes (LEDs) on the stage and supplying a light to the substrate
Implementation Method 2
a heating nozzle supplying a hot air to the substrate
Data Source
AI summary
A test apparatus for a liquid crystal display device includes: a stage having a substrate thereon; a plurality of light emitting diodes (LEDs) on the stage and supplying a light to the substrate; a heating nozzle supplying a hot air to the substrate; a needle applying a test signal to the substrate; and a microscope inspecting the needle and the substrate.