Display Panel Alignment Using Intersecting Imaginary Reference Points
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In the manufacturing of display devices with bent shapes, the position of alignment marks in bent areas changes due to curvature, leading to process errors during assembly.
Innovation Solution
An apparatus and method that utilize a photographing member to capture multiple alignment marks on a display panel and a control member to set an imaginary reference point, ensuring accurate alignment by forming intersecting straight lines from these marks, even when the panel is bent.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If alignment marks are provided in bent areas of display panels, then alignment can be performed, but position changes occur due to curvature causing process errors
Solution Approach 1:
An imaginary reference point is introduced as an intermediary element to bridge the alignment marks and the actual reference frame. This virtual point, calculated through geometric relationships between alignment marks, serves as a stable reference that compensates for position changes caused by bending, thereby resolving the contradiction between maintaining alignment capability and preventing process errors
Solution Approach 2:
The method transforms the physical position parameters of alignment marks into a calculated imaginary reference point position. By changing from direct use of physical mark positions to a computationally derived reference, the system maintains measurement capability while eliminating the harmful effect of curvature-induced position changes
2Manufacturing precision
If multiple alignment marks are used in bent areas, then alignment accuracy can be maintained, but device complexity increases
Solution Approach 1:
Multiple alignment marks are merged into a single imaginary reference point through geometric calculation. Instead of treating each alignment mark separately or requiring complex configurations, the system combines their positional information to derive one virtual reference point that encapsulates the alignment information, thereby reducing complexity while maintaining accuracy
Data Source
AI summary
An apparatus for manufacturing a display device including: a photographing member configured to photograph a first alignment mark, a second alignment mark, a third alignment mark, and a fourth alignment mark, which are provided in a display panel; and a control member configured to set an imaginary reference point, taking into account the first alignment mark, the second alignment mark, the third alignment mark, and the fourth alignment mark, which are photographed by the photographing member. The control member sets a first position which is included in the imaginary reference point and at which a first imaginary straight line connecting the first alignment mark to the third alignment mark and a second imaginary straight line connecting the second alignment mark to the fourth alignment mark cross each other.