Display Panel Bending Marks for Alignment Inspection
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Solution Overview
Problem
Existing display devices with extended display areas to the side face challenges in accurately determining the correct bending and positioning of the display panel and driving film, which is crucial for ensuring proper image viewing on both the front and side surfaces.
Innovation Solution
A display device with a bending region and marks on the display panel that allow for accurate inspection by detecting the positions of the window edge and marks using an optical sensor, enabling precise determination of the bending alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the display area is extended to the side of the display device, then the screen-to-body ratio is increased, but the bending and positioning accuracy of the display panel and driving film becomes difficult to determine
Solution Approach 1:
The patent introduces a mark as an intermediary element disposed on the bending region of the display panel. This mark serves as a reference object that enables the optical sensor to detect and measure the bending and positioning accuracy of the display panel and driving film. The mark includes a first portion and a second portion that separate from each other, providing clear reference points for measurement while not interfering with the extended display area functionality.
2Area of moving object
If the display area is extended to the side of the display device, then the screen-to-body ratio is increased, but the inspection complexity to determine correct bending and positioning increases
Solution Approach 1:
The mark acts as a simplified intermediary that reduces inspection complexity. Instead of directly analyzing the complex bending and positioning of the display panel and driving film, the optical sensor only needs to detect the positions of the first and second portions of the mark. This intermediary reference system simplifies the inspection process while maintaining measurement accuracy for the extended display configuration.
Solution Approach 2:
The patent replaces complex mechanical inspection methods with an optical detection system. The optical sensor detects the positions of the mark portions optically, eliminating the need for complex mechanical measurement tools or manual inspection procedures. This substitution reduces inspection complexity while enabling precise measurement of the bent display panel positioning.
Data Source
AI summary
A display device includes a display panel including: a bending region bent along an axis extending in a first direction; a window disposed on the first surface of the display panel; and a mark disposed on the bending region of the display panel and disposed along a second direction different from the first direction, wherein a first portion of the mark and a second portion of the mark different from the first portion do not overlap along the first direction of the display panel on which the window is disposed.