Grating Ridge Sloping Surfaces Dual Field Display Thickness
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Solution Overview
Problem
Conventional dual field display technology requires a significant thickness to maintain the display effect, due to the need for adequate distance between the grating and the display panel, which increases the overall thickness of the display device.
Innovation Solution
A grating with alternately distributed first and second view field regions, featuring ridge structures and a patterned light shield layer with light-blocking and light-transmitting regions on sloping surfaces, allowing for dual field display with reduced thickness by forming light-transmitting regions on sloping surfaces of the ridge structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional grating is used with adequate distance from the display panel, then dual field display effect is ensured, but the overall thickness of the display device increases
Solution Approach 1:
The patent transitions from a conventional planar grating structure to a three-dimensional ridge structure with sloping surfaces. The light-transmitting regions are positioned on the sloping surfaces of the ridges rather than on a flat plane, creating a dimensional change that allows the grating to be placed closer to the display panel while still achieving the required optical separation for dual field display.
Solution Approach 2:
The grating structure implements local quality by creating alternating first and second view field regions with distinct ridge configurations. Each region has light-transmitting regions positioned on specific sloping surfaces (first side for first view field, second side for second view field), allowing different viewing angles and fields to be achieved in different local areas of the grating.
2Length of stationary object
If the grating is placed close to the display panel, then the thickness is reduced, but the dual field display effect deteriorates
Solution Approach 1:
The patent employs curved sloping surfaces on the ridge structures instead of flat planes. The sloping surfaces are configured with specific angles and curvatures that enable effective light direction and view field separation even when the grating is positioned close to the display panel, thereby maintaining dual field display quality while reducing overall thickness.
3Length of stationary object
If light-transmitting regions are formed on sloping surfaces of ridge structures, then manufacturing complexity increases, but dual field display with reduced thickness is achieved
Solution Approach 1:
The patent combines multiple functions into the ridge structure itself. The ridges serve both as the grating structure for view field separation and as the substrate for positioning light-transmitting regions. The sloping surfaces of the ridges inherently provide the geometric configuration needed for dual field display, eliminating the need for additional complex optical elements or multi-layer structures.
Solution Approach 2:
The ridge structure with sloping surfaces serves multiple functions simultaneously: it creates the grating pattern for view field separation, provides the geometric configuration for light direction, and positions the light-transmitting regions in the required three-dimensional arrangement. This multi-functionality reduces the need for separate components and simplifies the overall manufacturing process despite the three-dimensional structure.
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
Enables dual field display with a smaller thickness, reducing manufacturing complexity and maintaining effective dual field display performance, even when the grating is close to pixels, by determining the view fields through the angle of the sloping surfaces of the ridge structures.
Implementation Method 1
a patterned light shield layer being formed on the ridge structures and including a plurality of light-blocking regions and a plurality of light-transmitting regions. In each first view field region, each light-transmitting region is formed on a sloping surface of a first side of each ridge structure; in each second view field region, each light-transmitting region is formed on a sloping surface of a second side of each ridge structure
Data Source
AI summary
A grating, a manufacturing method thereof and a display device are disclosed. The grating comprises: a substrate including a plurality of first view field regions (A1) and a plurality of second view field regions (A2) which are alternately distributed; a plurality of ridge structures formed on the substrate in each first view field region (A1) and each second view field region (A2); and a patterned light shield layer being formed on the ridge structures and including a plurality of light-blocking regions and a plurality of light-transmitting regions, wherein in each first view field region (A1), each light-transmitting region is formed on a sloping surface of a first side of each ridge structure; in each second view field region (A2), each light-transmitting region is formed on a sloping surface of a second side of each ridge structure; and the first side and the second side are two opposite sides.