LITI Optical System with Rotating Image Direction Modulator
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Solution Overview
Problem
Current laser-induced thermal imaging (LITI) apparatuses are limited in that they require different setups to achieve emission layer patterns oriented in either the X-axis or Y-axis direction, necessitating the use of specific apparatuses based on the desired pattern orientation.
Innovation Solution
An optical system incorporating an image direction modulator that can switch between modulating laser beams' direction in either the X-axis or Y-axis mode without changing equipment, using a system with a laser source, image transformer, mask, and projection lens, and employing reflecting mirrors to alter the beam path for different orientations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a LITI apparatus is configured to form emission layer patterns in a specific direction (X-axis or Y-axis), then the manufacturing precision and reliability are improved, but the adaptability deteriorates because different apparatuses are required for different pattern orientations
Solution Approach 1:
The LITI apparatus is designed with a rotatable laser beam scanning system that can switch between X-axis and Y-axis scanning modes, allowing a single apparatus to perform multiple functions of forming emission layer patterns in different orientations, thereby eliminating the need for separate apparatuses for different pattern directions
Solution Approach 2:
The laser beam scanning system incorporates a rotatable component that can dynamically change the scanning direction between X-axis and Y-axis orientations, enabling the apparatus to adapt its functionality based on the required pattern orientation without physical reconfiguration or exchange of equipment
2Manufacturing precision
If different LITI apparatuses are used for different emission layer pattern orientations, then the manufacturing precision is maintained, but the device complexity and ease of operation worsen due to equipment exchange requirements
Solution Approach 1:
The apparatus integrates both X-axis and Y-axis scanning capabilities into a single unified system with a rotatable laser beam scanning mechanism, eliminating the need for multiple separate apparatuses and reducing overall system complexity while maintaining manufacturing precision for different pattern orientations
Solution Approach 2:
The scanning systems for both X-axis and Y-axis directions are merged into a single apparatus through a rotatable scanning mechanism, combining multiple functions into one integrated system that reduces device complexity and eliminates the need for equipment exchange between different pattern orientation requirements
3Reliability
If dedicated LITI apparatuses are used for specific pattern directions, then the reliability is improved, but the productivity deteriorates due to equipment exchange time and operational inefficiency
Solution Approach 1:
The rotatable laser beam scanning system enables dynamic switching between X-axis and Y-axis scanning modes within a single apparatus, allowing rapid reconfiguration without equipment exchange, thereby improving productivity while maintaining the reliability of pattern formation through a unified optimized system
Solution Approach 2:
The single LITI apparatus with multi-directional scanning capability eliminates the need for equipment exchange between different pattern orientations, reducing downtime and operational inefficiency, thereby improving overall productivity while maintaining reliable pattern formation through a dedicated multi-functional system
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
Enables the formation of transfer layer patterns in various directions without the need for equipment exchange, allowing for flexible and efficient fabrication of organic light-emitting displays (OLEDs) by modulating the image direction of laser beams using a simple method.
Implementation Method 1
a light-to-heat conversion (LTHC) layer
Data Source
AI summary
An optical system has an image direction modulator and a laser induced thermal imaging (LITI) apparatus includes the optical system. The optical system includes a laser source for producing laser beams, and the image direction modulator has a first mode in which an image direction of the laser beams is modulated relative to a first direction and a second mode in which the image direction of the laser beams is modulated relative to a second direction.