Display Alignment Pattern for Transmittance-Based Component Positioning
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Solution Overview
Problem
Current display devices face challenges in accurately aligning component areas with their corresponding components, which affects light transmittance and image quality, especially in areas with varying light transmittance requirements.
Innovation Solution
A display device design that includes a substrate with distinct component areas, a main display area, and an insulating layer with specific transmission holes, along with an alignment pattern to precisely align components using a sensor that detects light transmittance differences between transmission portions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a transmission portion is arranged in the component area to allow light transmission, then light transmittance is improved, but alignment accuracy between component and component area deteriorates
Solution Approach 1:
The component area is divided into a first component area with a transmission portion for light transmission and a second component area without transmission for accurate component alignment. This segmentation allows different functional requirements to be met in different regions, resolving the contradiction between light transmittance and alignment accuracy.
Solution Approach 2:
Different regions of the component area are assigned different properties: the first component area has high light transmittance for optical functionality, while the second component area has structural integrity for alignment. This local differentiation allows each region to optimize for its specific function without compromising the other.
2Adaptability or versatility
If the display area is increased to add various functions, then versatility is improved, but alignment accuracy between components and display elements deteriorates
Solution Approach 1:
The display device is segmented into distinct functional areas: a main display area for image display and a component area for housing various components. Within the component area, further segmentation into first and second component areas enables both optical transmission and precise alignment functionality, allowing versatile design without sacrificing alignment precision.
3Illumination intensity
If transmission holes are created in the insulating layer for light transmission, then light transmittance is improved, but structural integrity and alignment reference deteriorate
Solution Approach 1:
The insulating layer is segmented with transmission holes specifically in the first component area while maintaining structural continuity in the second component area. This allows light transmission where needed while preserving the insulating layer's function as an alignment reference structure in the second component area.
Solution Approach 2:
The insulating layer exhibits different properties in different regions: in the first component area, it has transmission holes for light passage, while in the second component area, it remains intact to provide structural support and alignment references. This local quality differentiation resolves the contradiction between light transmission and structural integrity.
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
This design ensures accurate alignment of components with their areas, enhancing light transmittance uniformity and image quality by utilizing a sensor to correct alignment based on light transmittance differences, thereby improving overall display performance.
Implementation Method 1
a sensor that detects light transmittance differences between transmission portions
Data Source
AI summary
A display device includes: a substrate including a first component area in which a first transmission portion is arranged, a second component area that surrounds the first component area and in which a second transmission portion is arranged, and a main display area surrounding at least a portion of the second component area; an insulating layer having a first transmission hole corresponding to the first transmission portion and a second transmission hole corresponding to the second transmission portion, the first transmission hole and the second transmission hole exposing an upper surface of the substrate; a plurality of display elements arranged on the insulating layer and corresponding to the first component area, the second component area, and the main display area; and an alignment pattern arranged on the substrate and overlapping the second transmission hole and configured to align a component with the second component area.