Slit Grating With Varying Widths For 3D Display Viewing Zones
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Solution Overview
Problem
Conventional slit gratings in 3D display technologies limit viewing zones, restricting viewer freedom due to short viewing areas and significant impairments in visual quality when the viewer moves outside the sweet spots.
Innovation Solution
A slit grating design with varying grating structure widths, where the widths increase and then decrease along the direction of the grating, forming a trend change point, allowing for extended viewing zones and improved flexibility in viewer positioning without crosstalk interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional slit grating with uniform grating structure widths is used, then the construction is simple and production cost is low, but the viewing zones are limited and viewer freedom is restricted
Solution Approach 1:
The patent applies local quality by making different parts of the grating structure have different widths. Specifically, the grating structures have varying widths along the direction of arrangement, with some grating structures having larger widths and others having smaller widths. This non-uniform width distribution optimizes the viewing zones and extends the sweet spots without requiring complex additional components.
2Area of stationary object
If conventional slit grating is used, then the construction is simple, but the viewing area is short and visual quality deteriorates when viewer moves outside sweet spots
Solution Approach 1:
The patent applies parameter changes by modifying the width parameter of the grating structures. The widths of the grating structures are varied along the direction of arrangement, creating a non-uniform width distribution. This parameter variation extends the viewing area and maintains visual quality over a broader range of viewer positions.
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 slit grating design significantly extends the viewing range in the direction perpendicular to the display panel, enhancing the quality of the 3D viewing experience by allowing greater freedom in adjusting viewing positions without visual impairments.
Implementation Method 1
each grating structure comprising a light-blocking domain and a light-transmitting domain
Data Source
AI summary
A slit grating and a three-dimensional (3D) display apparatus including the slit grating are disclosed herein, the slit grating includes a plurality of grating structures (11-17) arranged side by side. The widths of the grating structures (11-17) increase and then decrease, along the direction in which the grating structures (11-17) are arranged. A grating structure (13,14) having the largest width may define a trend change point after which the trend in the widths of the grating structure widths changes.