Curved Display Substrate Domain Alignment
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Solution Overview
Problem
Curved display devices face issues with display quality deterioration due to mis-alignment between the display substrate and the opposite substrate, leading to potential horizontal line perception when viewed from different angles.
Innovation Solution
A curved display device design featuring a display substrate and an opposite substrate with a liquid crystal layer, where first and second domains are defined in each sub-pixel area, ensuring liquid crystal molecules align similarly across domains to maintain display quality and prevent horizontal line perception, even with substrate mis-alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the display substrate and opposite substrate are curved together, then the three-dimensional effect and sense of immersion are improved, but mis-alignment between substrates occurs leading to display quality deterioration
Solution Approach 1:
The pixel area is divided into multiple domains (first domains and second domains) with different liquid crystal alignment directions. This segmentation allows each domain to independently compensate for mis-alignment effects, preventing horizontal line perception and maintaining display quality even when substrates are mis-aligned due to curvature.
Solution Approach 2:
Different regions (domains) of the pixel area are assigned different liquid crystal alignment characteristics. The first domains have one alignment direction while the second domains have another alignment direction, creating local quality variations that compensate for the global mis-alignment issue in curved displays.
2Reliability
If domains with different liquid crystal alignment directions are used, then display quality is maintained under mis-alignment, but the device structure becomes more complex
Solution Approach 1:
The pixel area is segmented into multiple domains with different alignment directions. This segmentation provides reliability by ensuring that display quality is maintained under mis-alignment conditions, as the multiple domains collectively compensate for alignment errors without requiring complex external correction mechanisms.
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
The design enhances display quality by maintaining alignment and preventing horizontal line perception across various viewing angles, thereby improving the overall performance of curved display devices.
Implementation Method 1
a pixel electrode disposed in each of the plurality of pixel areas... a common electrode that generates an electric field in cooperation with the pixel electrode... Directions, in which liquid crystal molecules of the liquid crystal layer are aligned in response to the electric field
Data Source
AI summary
A curved display device includes a display substrate curved in a first direction and including a plurality of pixel areas, and each of the plurality of pixel areas including a first sub-pixel area and a second sub-pixel area, an opposite substrate facing the display substrate, the opposite substrate coupled to the display substrate and curved in the first direction together with the display substrate, and a liquid crystal layer interposed between the display substrate and the opposite substrate, where first domains are defined in the first sub-pixel area along a second direction crossing the first direction, second domains are defined in the second sub-pixel area along the second direction, and a width in the second direction of each of the first domains is equal to a width in the second direction of each of the second domains.