Process Key in Green Pixel Area for Narrow Bezel Display
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing display devices face limitations in minimizing the bezel area due to the presence of process keys, which hinder the reduction of the bezel size and affect the recognition rate of these keys, especially when aligning with manufacturing equipment or other objects during processes like scribing and grinding.
Innovation Solution
A display device design that incorporates a process key with a first key pattern made of a metal material and a second key pattern made of a black pigment, positioned in the active area of the display panel, particularly in the green pixel area, to enhance recognition rates and allow for a narrower bezel by utilizing the same material for the gate lines and black matrix, thereby increasing contrast and visibility from both upper and lower sides.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a process key is positioned in the bezel area, then the process key can be used for alignment with manufacturing equipment, but the bezel area cannot be minimized
Solution Approach 1:
The process key is extracted from the non-active area (bezel) and repositioned within the active area, specifically in the green pixel area. This extraction allows the bezel area to be minimized while the process key functionality is preserved through its new location that can still be recognized by manufacturing equipment.
Solution Approach 2:
The process key is designed with a specific pattern configuration in the green pixel area that enables recognition from both upper and lower sides. This dimensional consideration ensures that the process key maintains its alignment function while being positioned in the active area, resolving the contradiction between bezel minimization and process key recognition.
2Area of stationary object
If the process key is positioned in the active area, then the bezel area can be minimized, but the recognition rate of the process key deteriorates
Solution Approach 1:
The process key is specifically positioned in the green pixel area with a unique pattern configuration that provides high contrast and distinctiveness. This localized quality enhancement ensures that the process key maintains high recognition rates even when positioned in the active area, allowing bezel minimization without sacrificing recognition reliability.
Solution Approach 2:
The process key utilizes the green pixel area's color characteristics to enhance visibility and recognition. The pattern is designed to leverage the color contrast in the green region, ensuring that the process key can be definitely detected from both upper and lower sides while positioned in the active area.
3Reliability
If the process key pattern is made with high contrast materials, then the recognition rate improves, but the manufacturing complexity increases
Solution Approach 1:
The process key pattern is merged with the existing green pixel area structure, utilizing the same material layers and formation processes. This merging approach achieves high contrast for better recognition while avoiding additional manufacturing complexity, as the process key is integrated into the existing pixel structure rather than being a separate component.
Solution Approach 2:
The green pixel area serves dual functions: it maintains its role in image display while simultaneously hosting the process key pattern for manufacturing alignment. This multi-functionality eliminates the need for separate process key structures, reducing manufacturing complexity while maintaining high recognition rates through the inherent contrast of the green pixel region.
Data Source
AI summary
The present disclosure relates to a display device including a process key, and more particularly, to a process key with an improved recognition rate in a display device implementing a narrow bezel. The feature of the present disclosure is such that a process key is divided into and formed as a first key pattern made of a metal material and a second key pattern made of a black matrix material, and the process key is positioned in a green pixel area in which a green color filter pattern is provided among pixels positioned at outermost peripheries corresponding to four corners of an active area of a display panel such that a narrow bezel can be implemented and a recognition rate of the process key can also be improved. Consequently, the display panel can be accurately aligned with manufacturing equipment or other objects such that a process defect can be minimized and process efficiency cab also be improved. Further, the process key can be recognized from both upper and lower sides of the display panel so that the process can be improved.