Bent Display Panel Alignment Marks for Side-Face Image Display
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Solution Overview
Problem
Existing display devices primarily display images on their front face, with limited capability to display images on side faces, which restricts their functionality and user experience.
Innovation Solution
A display device with alignment marks disposed on its side face within the display area of a display panel, allowing for the manufacture of a display device with a curved portion in the display area, enabling image display on both the front and side faces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If alignment marks are disposed on the side face of the display panel, then the display device can display images on both front and side faces, but the manufacturing precision becomes more difficult to control due to the curved portion
Solution Approach 1:
Alignment marks are pre-formed on the display panel before the bending process. The first alignment mark is formed on the front surface and the second alignment mark is formed on the side surface in their respective initial positions. After the display panel is bent along the bending line, these pre-formed alignment marks automatically establish the correct spatial relationship for aligning the front and side display areas, eliminating the need for post-bending alignment adjustments.
2Adaptability or versatility
If the display panel is bent to create a curved portion, then image display on side face is enabled, but the complexity of the manufacturing process increases
Solution Approach 1:
The alignment marks are formed on the display panel before the bending process, establishing reference positions in advance. This preliminary formation of alignment marks simplifies the overall manufacturing process by providing automatic alignment references that eliminate the need for complex post-bending alignment procedures and adjustments.
3Manufacturing precision
If alignment marks are used to calculate bent degree, then precise alignment is achieved, but the measurement and detection difficulty increases
Solution Approach 1:
The measurement unit measures the positions of the first and second alignment marks after bending and calculates the bent degree based on these measured positions. This calculated bent degree information is then used by the control unit to control the driving signals, creating a feedback loop that ensures precise alignment and optimal display performance by adjusting operations based on actual bending measurements.
Data Source
AI summary
A display device includes: a display region and a non-display region surrounding the display region; a first bending line defined on the display region, where the first bending line includes a portion extending in a first direction; a first region located at one side of the first bending line; a second region located at the other side of the first bending line and bent from the first region in one direction; a first alignment mark disposed in the first area and having a first area; and a second alignment mark disposed in the second area and facing toward the first alignment mark while the first bending line is disposed between the first and second alignment marks. The second alignment mark has a second area different from the first area.