Display Surface Inspection Using Moisture Particles and Multi-Angle Imaging
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Solution Overview
Problem
Existing technologies face challenges in effectively inspecting and identifying defects in display devices, particularly in the attachment of anti-fingerprint coating layers, and ensuring efficient inspection of both front and side surfaces without causing damage or requiring complex movements.
Innovation Solution
An inspecting apparatus and method that includes a loader part, a wet air forming part to generate fine moisture particles, an inspection part with multiple imaging units for both front and side surfaces, and an unloader part, allowing the display device to move on a single plane for inspection, using high humidity air to inspect and measure contact angles for coating adherence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple imaging units are used to inspect both front and side surfaces, then inspection coverage is improved, but device complexity increases
Solution Approach 1:
The second and third imaging units are designed to be rotatable around the first direction axis and movable in the second direction, allowing dynamic repositioning to inspect different surfaces. This dynamic capability enables a single set of imaging units to cover multiple inspection areas that would otherwise require fixed units positioned everywhere.
Solution Approach 2:
The imaging units are designed with multi-functional capability to inspect both front and side surfaces of the display device. By making the imaging units rotatable and movable, they can adapt to different inspection positions, making them universal inspection tools rather than position-specific devices.
2Adaptability or versatility
If the display device moves in multiple directions during inspection, then all surfaces can be inspected, but inspection time increases
Solution Approach 1:
Instead of moving the display device in multiple directions, the imaging units themselves are made dynamic through rotation and movement capabilities. This allows the inspection system to adapt to different surfaces while the display device remains on a single plane, significantly reducing inspection time.
3Measurement precision
If moisture particles are generated on the surface for coating inspection, then adherence checking is improved, but surface stains may occur
Solution Approach 1:
The wet air forming part generates moisture particles with controlled parameters (fine particle size, controlled humidity) to achieve optimal adherence detection while minimizing stain formation. By precisely controlling the physical parameters of the moisture particles, the system achieves effective inspection without the harmful side effect of staining.
Solution Approach 2:
The inspection process applies moisture locally and temporarily only to the areas being inspected, rather than uniformly treating the entire surface. The air blow part then removes excess moisture, ensuring that moisture is present only where needed for inspection and is quickly removed afterward, preventing widespread staining.
4Object-affected harmful factors
If fine moisture particles are generated for inspection, then stain prevention is improved, but moisture removal becomes more difficult
Solution Approach 1:
The air blow part acts as an intermediary mechanism that facilitates the removal of fine moisture particles from the surface. By introducing a flow of air, the system efficiently removes the fine moisture particles that would otherwise be difficult to remove, maintaining surface cleanliness after inspection.
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
Ensures thorough inspection of both front and side surfaces of display devices, reduces inspection time, and prevents surface stains or damage by using fine moisture particles and natural vaporization, enhancing the quality of the inspection process.
Implementation Method 1
providing relatively high humidity air to a surface of the display device may include heating water and producing steam
Implementation Method 2
generates moisture particle on a surface of the display device
Implementation Method 3
a first heater part disposed inside the second manifold and heating the second manifold and a second heater part disposed inside the second manifold and heating a slit attached to the second manifold
Implementation Method 4
the removing part may include an air blow
Data Source
AI summary
An inspecting apparatus for a display device including: a loader part into which the display device is inputted, a wet air forming part that generates moisture particle on a surface of the display device, an inspection part that inspects the surface of the display device, and an unloader part that emits the display device to an outside.