Stereoscopic Lens Alignment via Light-Softened Marking
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Solution Overview
Problem
The manufacturing of stereoscopic image display devices is hindered by misalignment of stereoscopic lenses, leading to degraded image quality and increased manufacturing time, particularly due to the need for post-application alignment procedures.
Innovation Solution
A display device and panel bonding system that includes a display module with an alignment mark area and a stereoscopic lens featuring a marking portion, where the marking portion is softened by specific wavelength light, allowing for precise alignment and bonding using a camera unit, alignment calculation unit, and bonding unit to improve alignment precision and reduce bonding time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If post-application alignment procedures are used to ensure precise lens positioning, then alignment precision is improved, but manufacturing time increases
Solution Approach 1:
Alignment marks are formed on the display panel before the stereoscopic lens is applied. The bonding apparatus aligns the lens with these pre-formed marks during the bonding process itself, eliminating the need for post-application alignment procedures. This preliminary preparation of alignment references enables precise positioning to be achieved as part of the bonding operation rather than as a separate subsequent step.
Solution Approach 2:
The patent replaces manual or mechanical post-application alignment adjustment with an automated optical alignment system. The bonding apparatus uses imaging means to capture alignment marks and automatically calculates positioning information to guide the bonding process, substituting mechanical adjustment procedures with automated optical-mechanical integration that achieves precise alignment during bonding.
2Manufacturing precision
If manual alignment adjustment is performed after lens application, then alignment precision is improved, but device complexity increases
Solution Approach 1:
The patent merges the alignment function with the bonding apparatus by integrating imaging means and alignment calculation units into the bonding system itself. Rather than using separate manual alignment tools or procedures after bonding, the alignment and bonding operations are combined into a single integrated process, reducing overall process complexity while maintaining high alignment precision.
Solution Approach 2:
The bonding apparatus performs its own alignment function through integrated imaging and calculation units that automatically detect alignment marks and compute positioning information. This self-service capability eliminates the need for external manual alignment devices or procedures, simplifying the overall manufacturing process while achieving precise alignment.
3Manufacturing precision
If alignment marks are formed using additional materials on the lens, then alignment precision is improved, but manufacturing complexity increases
Solution Approach 1:
Instead of adding alignment materials to the entire lens or using complex multi-material structures, the patent forms alignment marks only in specific local areas on the display panel that correspond to the lens position. The marking portion on the lens is minimized to essential features only, reducing material complexity while maintaining sufficient alignment precision through strategic local marking.
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
The system enhances alignment precision and reduces manufacturing time by aligning the alignment mark with the marking portion, ensuring accurate bonding without additional adjustment processes, thereby maintaining image quality and optimizing the manufacturing process.
Implementation Method 1
the marking line includes a material softened by light of a specific wavelength
Data Source
AI summary
Provided is a display device. The display device comprises: a display module including a display panel, wherein the display panel includes a display area having a plurality of pixels and an alignment mark area surrounded by the display area, and a display driver driving at least one of the plurality of pixels in the alignment mark area to form an alignment mark; and a stereoscopic lens including a base disposed on the display module, a plurality of lenses disposed on the base at an angle offset from a side of the display module, and a marking portion formed on one or more of the plurality of lenses to overlap the alignment mark area.