Flat Panel Display Inspection Input Device Using Guide Rails
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Solution Overview
Problem
The existing input methods for flat panel display inspection systems are prone to error due to the need for operators to physically touch the displays, which can generate additional failures and require commuting between inspection and input locations, leading to potential input errors.
Innovation Solution
An input device positioned in front of the mother substrate with a guide rail system and position detector that allows operators to select failure types without touching the displays, using a controller to map failure information and minimize errors by generating position and failure selection signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the operator touches the flat panel display to input failure information, then the failure position can be detected, but additional failures may be generated by the operator's pressure
Solution Approach 1:
The patent introduces a sensor as an intermediary device between the operator and the flat panel display. The sensor detects the operator's touch position without requiring direct contact with the display surface, thereby preventing pressure-induced failures while maintaining accurate failure position detection. The sensor acts as a mediator that transfers the detection function away from the display itself.
Solution Approach 2:
The patent replaces the mechanical touch-based detection system with an optical or electrical sensor system. Instead of relying on physical contact and pressure detection, the sensor uses optical fields or electrical signals to detect the operator's position, eliminating the mechanical pressure that could cause additional failures.
2Ease of operation
If the operator commutes between inspection system and monitor location, then failure input can be performed, but input errors may occur due to location separation
Solution Approach 1:
The patent merges the inspection system and the input interface into a single integrated location. The sensor is positioned at the inspection system, allowing the operator to both inspect and input failure information at the same location, eliminating the need to commute between separate locations and reducing input errors.
Solution Approach 2:
The patent creates a digital copy of the inspection interface at the monitor location. The sensor detects failure positions and transmits this information to a computer, which displays it on a monitor. This digital copying allows the operator to input failure information without physically moving between locations, as the system replicates the inspection interface functionality.
3Difficulty of detecting and measuring
If the operator presses the front of the flat panel display to detect failure, then the failure position can be identified, but the display may be damaged by applied pressure
Solution Approach 1:
The sensor serves as an intermediary that detects failure positions without requiring the operator to press the display front surface. The sensor detects touch or proximity signals that indicate failure positions without transmitting mechanical pressure to the display, thereby protecting display structural integrity while maintaining detection capability.
Solution Approach 2:
The patent replaces mechanical pressure-based detection with optical or electrical detection mechanisms. The sensor detects failure positions through optical fields or electrical signals rather than mechanical pressure, eliminating the risk of display damage while maintaining the ability to identify failure positions accurately.
Data Source
AI summary
An input device that inputs a failure signal of a flat panel display in which a failure is found in a process of inspecting flat panel displays of a mother substrate state is provided. The input device includes an input unit that is positioned in the front of a mother substrate and spaced apart from the mother substrate and that has a plurality of labels in which a kind of a failure is written and at least one selection button to generate a failure selection signal, a guide unit that includes a first guide rail that guides horizontal movement of the input unit and a second guide rail that guides vertical movement of the input unit, a position detector that detects a position of the input unit to generate a position signal, and a controller that receives a failure selection signal from the input unit and receives a position signal from the position detector to map failure information of the mother substrate.