Clamping Apparatus for Mask Sheet Tensioning
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Solution Overview
Problem
Conventional clamping apparatuses for mask sheets during tensioning processes often apply non-uniform pressure, leading to deformation or fracture, which can result in poor deposition patterns and increased manufacturing costs.
Innovation Solution
A clamping apparatus comprising a clamping frame, a guide, a clamp, a linear driver, and a pressure sensor that adjusts pressure distribution to prevent deformation and fracture by sensing pressure in real-time and controlling the clamp's motion to ensure uniform pressure application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional clamping apparatuses apply pressure to tension mask sheets, then the mask sheets can be fixed and tensioned, but non-uniform pressure causes deformation or fracture of the mask sheets
Solution Approach 1:
The patent changes the pressure parameter from constant to variable by introducing a pressure sensor and control system. The clamping force is dynamically adjusted based on real-time pressure feedback, ensuring uniform pressure distribution across the mask sheet surface. This prevents both deformation (by avoiding excessive pressure) and fracture (by maintaining sufficient pressure), thereby resolving the contradiction between mask sheet integrity and deposition pattern quality.
Solution Approach 2:
The patent implements a feedback control system where pressure sensors monitor the clamping pressure in real-time and feed this information back to a control system. The control system adjusts the clamping force accordingly to maintain uniform pressure distribution. This feedback mechanism ensures that the mask sheet is properly tensioned without exceeding deformation or fracture thresholds, thus improving both reliability and manufacturing precision.
2Ease of operation
If non-uniform pressure is applied during tensioning, then the mask sheet can be secured to the frame, but deformation or fracture occurs
Solution Approach 1:
The patent transforms the clamping pressure from a fixed parameter to a controllable variable through the integration of pressure sensors and a control system. By dynamically adjusting the pressure parameter, the system achieves sufficient fixation force while preventing excessive pressure that would cause deformation or fracture. This resolves the contradiction between ease of operation (fixation) and structural integrity.
3Manufacturing precision
If uniform pressure is applied to prevent deformation, then deposition patterns improve, but the complexity of the clamping apparatus increases
Solution Approach 1:
The patent employs feedback control with pressure sensors distributed across the clamping apparatus to monitor and adjust pressure in real-time. While this adds control system complexity, it enables uniform pressure distribution that significantly improves deposition pattern quality. The feedback mechanism automatically compensates for pressure variations, making the complexity worthwhile by achieving precise manufacturing results.
Solution Approach 2:
The patent replaces purely mechanical pressure application with a controlled system that uses sensors and actuators to regulate pressure. This substitution of mechanical brute force with a controlled electromechanical system allows for precise pressure management, achieving uniform pressure distribution and high-quality deposition patterns while making the added complexity manageable through automation.
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 solution effectively prevents deformation and fracture of mask sheets, enabling precise deposition patterns and reducing manufacturing costs by ensuring uniform pressure distribution during the tensioning process.
Implementation Method 1
The pressure sensor is configured to sense pressure applied to an object clamped between the clamp and the clamping frame
Data Source
AI summary
A clamping apparatus includes a clamping frame, a first guide, a clamp, a linear driver, and a pressure sensor. The first guide is disposed on the clamping frame. The clamp is slideably engaged with the first guide, the clamp being configured to linearly move along the first guide to adjust a distance between the clamp and the clamping frame. The linear driver is connected to the clamp, the linear driver being configured to cause, at least in part, linear motion of the clamp. The pressure sensor is configured to sense pressure applied to an object clamped between the clamp and the clamping frame.