Laser Thermal Transfer Color Filter on Sealed Display Substrate
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Solution Overview
Problem
The packaging of liquid display media in color displays is challenging due to the flow characteristics of the media, making it difficult to accurately position the color filter, which can lead to loss of the sealed media during re-packaging if not properly aligned.
Innovation Solution
The method involves packaging the liquid display media between a bottom substrate and a transparent sealing substrate, followed by forming the color filter layer on the sealing substrate using a laser thermal transfer process, eliminating the need for precise alignment during packaging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the color filter is used as the packaging material to contain the liquid display media, then the media can be sealed, but it becomes difficult to accurately position the color filter due to the flow characteristics of the liquid media
Solution Approach 1:
The invention separates the packaging function from the color filter function. The sealing substrate serves as the packaging structure to contain the liquid display media, while the color filter is applied as a separate layer on the sealing substrate. This segmentation allows the sealing substrate to provide reliable containment without compromising positioning accuracy, as the color filter is applied after the sealing structure is established.
Solution Approach 2:
The invention performs the sealing action before applying the color filter. The sealing substrate is first positioned and fixed to contain the liquid display media, establishing a stable sealed structure. Only after this preliminary sealing action is completed is the color filter applied to the sealing substrate, ensuring that the positioning accuracy is not compromised by the flow characteristics of the liquid media.
2Productivity
If the color filter is positioned and sealed first, then the packaging is complete, but re-packaging is required if misalignment occurs, causing loss of sealed liquid display media
Solution Approach 1:
The sealing substrate is first positioned and fixed to contain the liquid display media, establishing a stable sealed structure. Only after this preliminary sealing action is completed is the color filter applied to the sealing substrate. This sequence ensures that the packaging is already secure before the color filter is applied, eliminating the need for re-packaging and preventing loss of liquid display media.
Solution Approach 2:
The invention creates a buffer by separating the sealing function from the color filter function. The sealing substrate provides a stable, pre-established containment structure that cushions against potential misalignment issues. If positioning issues occur, the already-sealed structure prevents media loss, and corrections can be made to the color filter layer without compromising the sealed media.
3Manufacturing precision
If the color filter is applied before sealing the liquid display media, then alignment can be achieved, but the packaging process becomes complex and time-consuming
Solution Approach 1:
The invention inverts the conventional sequence by applying the color filter after sealing rather than before. The sealing substrate is first positioned and fixed to contain the liquid display media, establishing a stable sealed structure. Only after this sealing action is completed is the color filter applied to the sealing substrate. This inversion simplifies the process by eliminating the need for complex alignment procedures during the sealing stage.
Solution Approach 2:
The invention segments the manufacturing process into distinct stages: first sealing the liquid display media with the sealing substrate, then separately applying the color filter layer. This segmentation allows each stage to be optimized independently - the sealing stage focuses on containment reliability while the color filter application stage focuses on color accuracy, reducing overall process complexity.
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
This approach allows for quicker and more efficient packaging of the liquid display media, as the color filter is formed post-packaging, reducing the risk of media loss and improving the yield and efficiency of the process.
Implementation Method 1
transfers a color coating onto the sealing substrate by a laser device through a laser thermal transfer process
Data Source
AI summary
A method for manufacturing a color display provides a bottom substrate, injects a liquid display media onto the bottom substrate, and disposes a sealing substrate on the liquid display media, such that the liquid display media is contained between the sealing substrate and the bottom substrate. The method also aligns an image device corresponding to the bottom substrate and transfers a color coating onto the sealing substrate by a laser device through a laser thermal transfer process to form a color filter layer on the sealing substrate.