Non-Quadrangular Display Alignment Mark Merging
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Solution Overview
Problem
In liquid crystal display devices with non-quadrangular shapes, the alignment accuracy of components such as polarizing plates and backlight units with respect to the display panel is compromised due to their deformed shapes, leading to reduced light use efficiency and potential display quality issues.
Innovation Solution
The implementation of alignment marks on the display panel, polarizing plates, and components allows for precise positioning based on the relationship between these marks, ensuring accurate alignment even with non-quadrangular outlines, thereby improving the alignment accuracy of components like polarizing plates and backlight units with respect to the display panel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If alignment marks are independently provided for polarizing plate and component, then alignment accuracy for each component is improved, but arrangement space increases and outer appearance is affected
Solution Approach 1:
The patent merges the alignment mark functions by providing a single panel alignment mark that serves as a reference for both the polarizing plate and the component (backlight device). This eliminates the need for separate alignment marks, reducing arrangement space while maintaining alignment accuracy through the unified reference system.
2Manufacturing precision
If multiple independent alignment marks are provided, then alignment accuracy is improved, but the alignment marks more likely affect outer appearance and display quality
Solution Approach 1:
By consolidating the alignment reference into a single panel alignment mark, the patent reduces the number of visible marks that could affect outer appearance and display quality, while still providing sufficient reference information for accurate alignment of both the polarizing plate and component.
3Adaptability or versatility
If non-quadrangular shapes are used for display panel and components, then design flexibility is improved, but alignment accuracy deteriorates
Solution Approach 1:
The patent employs asymmetric alignment mark configurations (including triangular and circular marks) that work effectively with non-quadrangular display panel shapes. The alignment marks are strategically positioned and designed with specific geometries that provide reliable reference points regardless of the overall non-quadrangular form factor of the display device.
Data Source
AI summary
A display device includes a display panel displaying an image thereon and having a plate surface and including a panel alignment mark on the plate surface of the display panel, a polarizing plate disposed overlapping the plate surface and including a polarizing plate alignment mark, and a component disposed overlapping the plate surface and the polarizing plate and including a component alignment mark. The display panel, the polarizing plate, and the component have a non-quadrangular outline shape, a mounting position of the polarizing plate with respect to the display panel is determined according to position relation of the polarizing plate alignment mark and the panel alignment mark, and a mounting position of the component with respect to the display panel is determined according to position relation of the component alignment mark and the panel alignment mark.