Liquid Crystal Display Filling Layer for Adhesive Dispensing Control
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Solution Overview
Problem
Conventional liquid crystal displays in mobile devices face difficulties in accurately controlling the dispensing of optical adhesive, leading to uneven appearances and structural defects due to gaps between adhesive-filled areas and optical holes.
Innovation Solution
The proposed liquid crystal display structure includes a cover plate, optical adhesive layers, polarizing layers, and filling layers, with the addition of a dam around the periphery of the filling layers to facilitate precise adhesive filling and integration, ensuring even coverage and structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If optical holes are filled with optical adhesive through dispensing process, then optical components can be protected and light pathways can be maintained, but it causes difficulty in accurately controlling the amount of adhesive dispensed, leading to uneven appearance and gaps between filled areas and optical adhesive
Solution Approach 1:
The patent applies preliminary action by forming a filling layer within the optical holes before dispensing optical adhesive. This pre-formed structure provides a defined boundary and volume constraint that enables precise control of subsequent adhesive dispensing. The filling layer acts as a prepared receptacle that limits adhesive spread and ensures complete filling without overflow or gaps, thereby solving the manufacturing precision issue while maintaining structural integrity.
2Adaptability or versatility
If the diameter of optical holes is 2 to 3 millimeters and depth is 70 to 100 micrometers, then optical components can be accessed, but it results in difficulty in accurately controlling the amount of adhesive dispensed
Solution Approach 1:
The patent introduces a filling layer as an intermediary material between the optical holes and the optical adhesive. This filling layer has specific physical properties that mediate the interaction between the adhesive dispensing process and the optical hole geometry. The filling layer provides a controlled interface that regulates adhesive flow and distribution, enabling accurate adhesive quantity control while maintaining compatibility with the optical component integration requirements of the specified hole dimensions.
Data Source
AI summary
The present invention provides a liquid crystal display with improved structure. A liquid crystal display includes a cover plate, a polarizing layer, and a liquid crystal display unit layer. The cover plate is placed on the polarizing layer, and the polarizing layer is placed on the liquid crystal display unit layer. Between the cover plate and the polarizing layer or between the polarizing layer and the liquid crystal display unit layer, an optical adhesive layer may further be included. The present invention further includes a filling layer, enabling the area between the cover plate and the polarizing layer, between the polarizing layer and the liquid crystal display unit layer, or between the polarizing layer and the optical adhesive layer to be completely filled. The present invention solves the problem of uneven appearance or structural defects in the liquid crystal display caused by difficulties in controlling the adhesive dispensing quantity.