Sealing Area Cell Gap Maintenance for LCD Uniformity
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Solution Overview
Problem
Conventional display devices fail to maintain uniform cell gaps between sealing and active areas, affecting image quality due to non-uniform transmittance across the display.
Innovation Solution
Incorporating a sealing area cell gap maintenance portion with a layered and columnar structure between substrates to maintain uniform active and sealing area cell gaps, utilizing color filters and spacers to ensure consistent internal thickness across the display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional sealing methods are used to seal between substrates, then the sealing process is simple, but the cell gaps between sealing area and active area are not maintained uniformly
Solution Approach 1:
The sealing area cell gap maintenance portion is divided into multiple functional layers: a layered sealing area cell gap maintenance portion and a column sealing area cell gap maintenance portion. This segmentation allows each layer to perform its specific function in maintaining cell gap uniformity, with the layered portion providing base spacing and the column portion providing additional vertical support.
Solution Approach 2:
The sealing area cell gap maintenance portion extends in the thickness direction (vertical dimension) with column structures that stand upright from the layered portion. This dimensional extension ensures uniform cell gap maintenance by providing support structures that reach from the first substrate through the pixel image layer to the second substrate, addressing the uniformity issue in the vertical dimension.
2Manufacturing precision
If cell gap uniformity is improved through additional maintenance portions, then transmittance uniformity is improved, but the device structure becomes more complex
Solution Approach 1:
The sealing area cell gap maintenance portion serves multiple functions simultaneously: it maintains cell gap uniformity, provides structural support between substrates, and ensures consistent transmittance across the display. The layered and columnar structures work together to achieve both mechanical stability and optical uniformity.
Solution Approach 2:
The column sealing area cell gap maintenance portion is positioned within and extends from the layered sealing area cell gap maintenance portion. This nested arrangement allows the column structures to be integrated with the layered base, creating a compact multi-functional structure that maintains cell gap uniformity without excessive complexity.
Data Source
AI summary
Disclosed is a liquid crystal display device including: a first substrate provided with an active area where an image is displayed, and with a nonactive area where an image is not displayed; a second substrate provided with a thin film transistor, and arranged to face the first substrate; a liquid crystal material disposed between the first substrate and the second substrate; a sealing member sealing between the first substrate and the second substrate; and a sealing area cell gap maintenance portion provided in a sealing area mutually sealing the first substrate and the second substrate to maintain a sealing area cell gap, which is an internal thickness of the first substrate and the second substrate in the sealing area SA, uniformly with an active area cell gap, which is an internal thickness of the first substrate and the second substrate in the active area.