Light Travel-Direction Changing Layer for Non-Planar Displays
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Solution Overview
Problem
Display devices with non-planar shapes, such as convexly curved or bent displays, suffer from reduced display quality due to light beams not being directed towards the viewing area, and 3D image display quality is deteriorated by light from sub-pixel areas being incident on non-target lenticular lenses, leading to overlapping image viewing areas.
Innovation Solution
A display device incorporating a light travel-direction changing layer with light-transmitting patterns that adjust the direction of light from sub-pixel areas to ensure optimal emission towards the viewing area, and an optional lens array to separate left-eye and right-eye images, reducing overlapping image areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the display device has a non-planar shape (convexly curved or bent), then the display device can be flexible and deformed into various forms, but light beams from edge areas do not travel toward the viewing area, deteriorating display quality
Solution Approach 1:
The light travel-direction changing layer is divided into multiple light-transmitting patterns, each corresponding to specific sub-pixel areas. Each pattern independently controls the light direction from its associated sub-pixels, enabling localized adjustment of light paths to compensate for the curved display geometry and ensure all edge areas direct light toward the viewing area.
Solution Approach 2:
The light travel-direction changing layer acts as an intermediary component between the display panel and the viewer. This intermediate layer modifies the light paths from sub-pixel areas, particularly from edge regions, to redirect them toward the viewing area, thereby maintaining display quality despite the non-planar display shape.
2Adaptability or versatility
If an lenticular lens is used to provide 3D image display function, then left-eye and right-eye images can be separated, but light from sub-pixel areas is incident on non-target lenticular lenses, causing overlapping image viewing areas and deteriorating 3D image quality
Solution Approach 1:
The light travel-direction changing layer is segmented into multiple light-transmitting patterns, with each pattern corresponding to specific sub-pixel areas and directing light to specific target lenticular lenses. This segmentation ensures that light from each sub-pixel area is precisely directed to its intended lenticular lens, preventing cross-contamination to non-target lenses and eliminating overlapping image viewing areas.
Solution Approach 2:
Different regions of the light travel-direction changing layer have different light-transmitting patterns optimized for their local requirements. Each pattern is specifically designed to direct light from its corresponding sub-pixel areas to the appropriate lenticular lens, ensuring precise image separation and preventing overlapping in the 3D display.
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
Improves display quality by ensuring light from all sub-pixel areas is directed towards the viewing area, regardless of the display shape, and reduces overlapping image areas in 3D displays, enhancing the overall image perception.
Implementation Method 1
a light travel-direction changing layer including a plurality of light-transmitting patterns for changing the travel direction of light emitted from the plurality of sub-pixel areas
Implementation Method 2
Light from the left-eye pixel area and light from the right-eye pixel area are positioned on a focal plane of the lenticular lens, such that the left-eye image and the right-eye image may be provided based on directivity characteristics of the lenticular lens
Data Source
AI summary
A display device includes a display panel including a plurality of sub-pixel areas, and a light travel-direction changing layer including a plurality of light-transmitting patterns for changing the travel direction of light emitted from the plurality of sub-pixel areas, respectively. In this connection, a central point of a light-emission face of each of the plurality of light-transmitting patterns is defined as a point at which a virtual face corresponding to the light-emission face of each of the plurality of light-transmitting patterns contacts an optimal light-path line connecting a sub-pixel area corresponding to each light-transmitting pattern and a central point of the viewing area to each other. In this way, light from the sub-pixel area may pass through the light-transmitting pattern and may be directed toward the central point of the viewing area. Thus, the display quality in the viewing area may be improved.