Color Filter Array Spacer Integration for LCD Sealant Application
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Solution Overview
Problem
The narrow peripheral area in large liquid crystal displays (LCDs) complicates the application of sealants, leading to potential damage of signal lines, reduced reliability, and decreased manufacturing yield due to the complexity of incorporating spacers and issues with sealant emission and bubble removal.
Innovation Solution
A color filter array panel with spacers made of the same material as the color filters, integrated into the peripheral area to prevent damage to signal lines, and a light blocking member with openings for color filters, allowing for improved sealant application and reduced bubble issues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If spacers are included in the sealant to avoid damaging signal lines, then signal line protection is improved, but the sealant application process becomes complicated and productivity decreases
Solution Approach 1:
The invention separates the spacer function from the sealant by providing a dedicated spacer structure formed on the panel surface. This segmentation allows the sealant to be applied without spacers mixed in, eliminating the complexity of spacer inclusion while maintaining signal line protection through the separate spacer structure.
Solution Approach 2:
The spacer acts as an intermediary element between the sealant and the signal lines. By positioning the spacer on the panel surface before sealant application, it mediates the interaction between the sealant and signal lines, preventing damage without requiring spacers to be mixed into the sealant itself.
2Reliability
If spacers are included in the sealant, then signal line damage is prevented, but bubble removal process time increases
Solution Approach 1:
By segmenting the spacer function from the sealant composition, the invention eliminates bubbles trapped within the sealant-spacer mixture. The separate spacer structure formed on the panel surface does not introduce bubbles into the sealant, thereby eliminating or reducing the bubble removal process time while maintaining signal line protection.
3Productivity
If the peripheral area is narrowed to increase manufacturing yield, then manufacturing yield is improved, but the space for sealant application becomes insufficient
Solution Approach 1:
The invention utilizes the vertical dimension by forming spacers on the panel surface rather than relying solely on horizontal peripheral space. This dimensional transition allows adequate spacer and sealant application space even when the peripheral area is narrowed, thereby maintaining manufacturing yield while providing sufficient workspace for sealant application.
4Ease of manufacture
If sealant is applied using a syringe, then sealant application is possible, but poor emission occurs due to spacers
Solution Approach 1:
By segmenting the spacer function from the sealant, the invention eliminates the physical obstruction caused by spacers within the sealant stream. The separate spacer structure formed on the panel surface does not interfere with syringe-based sealant emission, thereby improving ease of operation while maintaining application capability.
Data Source
AI summary
A color filter array panel includes a panel having a display area and a peripheral area surrounding the display area, the display area including a plurality of color filters. A first spacer is formed in the peripheral area and is constructed from the same material as that of at least one of the color filters.