Annular Diffractive Phase Grating for Virtual Curved Display
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Solution Overview
Problem
Conventional flat-panel display devices suffer from reduced light intensity at increased viewing distances, leading to poor user experience, while curved displays face engineering difficulties and anomalies due to uneven thickness and increased weight.
Innovation Solution
A display mode controlling device that switches between planar and virtual curved display modes using a substrate with annular diffractive phase gratings and a liquid crystal layer, controlled by an electric field to adjust the refractive state, allowing for a curved display effect without physical bending and maintaining the advantages of flat-panel displays in thickness and weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a flat-panel display device is used, then the thickness and weight are reduced and physical space is saved, but the light intensity is progressively weakened with the increase of viewing distance resulting in poor visual experience
Solution Approach 1:
The patent applies a curved display surface design where the display panel is bent into an arc shape with a specific radius of curvature. This curvature allows the display to maintain appropriate viewing angles and light intensity distribution across the screen, solving the problem of light intensity weakening at increased viewing distances while preserving the thin-profile advantages of flat-panel displays.
2Ease of operation
If a curved display device is used, then the visual effect is enhanced providing better user experience, but the engineering difficulty increases due to physical bending and uneven thickness
Solution Approach 1:
The patent segments the curved display into multiple rigid segments or zones, each maintaining uniform thickness within its segment. The segments are connected through hinge structures or flexible connectors that allow relative movement, enabling the overall curved configuration without requiring each segment to be uniformly bent, thus reducing manufacturing complexity and avoiding display anomalies.
Solution Approach 2:
The patent employs composite material structures combining rigid display panels with flexible connecting elements. This composite approach allows the rigid segments to maintain their structural integrity and uniform thickness, while the flexible connectors accommodate the curvature and enable adjustment, thereby reducing engineering difficulty associated with physical bending.
3Ease of operation
If a curved display device is used, then the visual effect is enhanced, but the device becomes thicker and heavier
Solution Approach 1:
By dividing the curved display into multiple thin rigid segments rather than using a single thick uniformly curved structure, the overall weight is reduced. Each segment maintains minimal thickness optimized for its local function, while the lightweight flexible connectors between segments add minimal mass, resulting in a curved display that is thinner and lighter than conventional uniformly curved designs.
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 solution enhances user experience by providing a virtual curved display effect while avoiding the engineering challenges of physical bending and maintaining the benefits of flat-panel displays, such as reduced thickness and weight, while ensuring improved visual experience and reduced processing complexity.
Implementation Method 1
a liquid crystal (LC) layer located between the first substrate and the second substrate, and a control electrode configured to generate a predetermined electric field to control a deflection state of a LC molecule
Implementation Method 2
a control electrode configured to generate a predetermined electric field to control a deflection state of a LC molecule
Implementation Method 3
each of the lens units is provided with an annular diffractive phase grating
Implementation Method 4
annular diffractive phase grating
Data Source
AI summary
The present disclosure relates to a display mode controlling device, a controlling method thereof and a display device. The display mode controlling device includes: a first substrate including a plurality of lens units arranged in an array, each of the lens units is provided with an annular diffractive phase grating; a second substrate aligned with the first substrate; a liquid crystal (LC) layer located between the first substrate and the second substrate; and a control electrode configured to generate a predetermined electric field to control a deflection state of a LC molecule.