Liquid Crystal Grating with Variable Periods for Naked-Eye 3D Displays
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current liquid crystal grating-type naked-eye 3D display technologies experience a gradual increase in crosstalk from the center to the edge of the screen due to an accumulated edge deviation of the liquid crystal grating opening, caused by a refractive medium between the display panel and the liquid crystal grating.
Innovation Solution
A liquid crystal grating design with alternating first and second grating periods, where the second grating period has fewer electrodes than the first, and a driving structure that controls the formation of light-shielding and light-transmitting regions, with the width of the second light-transmitting region being narrower than the first, to reduce opening deviation and compensate for edge deviations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a conventional liquid crystal grating with uniform grating periods is used, then the manufacturing process is simple, but accumulated edge deviation occurs causing crosstalk from center to edge
Solution Approach 1:
The patent applies local quality by making different grating periods have different characteristics. Specifically, the grating periods are divided into first grating periods with a first period and second grating periods with a second period that is different from the first. This local differentiation compensates for the accumulated edge deviation caused by the refractive medium, reducing crosstalk while maintaining manufacturing feasibility.
2Illumination intensity
If the grating opening is made wider to improve light transmission, then more light passes through, but edge deviation accumulates increasing crosstalk
Solution Approach 1:
The patent applies parameter changes by varying the period of different grating periods. The first grating periods have a first period while the second grating periods have a second period, creating a parameter variation that compensates for edge deviation. This allows the grating to maintain adequate light transmission while reducing the accumulated edge deviation that causes crosstalk.
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
This design reduces the accumulated edge deviation of the liquid crystal grating opening, thereby alleviating the problem of crosstalk in 3D displays by narrowing the opening of the second grating period and improving image clarity across the screen.
Implementation Method 1
a liquid crystal layer between the first substrate and the second substrate, where the second electrode is located on the first substrate
Implementation Method 2
a first driving structure, electrically connected with the first electrodes, and controlling the first grating period to form a first light-shielding region and a first light-transmitting region by applying voltages to the first electrodes
Implementation Method 3
caused by a refractive medium between the display panel and the liquid crystal grating
Data Source
AI summary
A liquid crystal grating includes: a first grating period and a second grating period arranged along a first direction, where a quantity of second electrodes in the second grating period is less than a quantity of first electrodes in the first grating period; a first driving structure, electrically connected with the first electrodes, and controlling the first grating period to form a first light-shielding region and a first light-transmitting region by applying voltages to the first electrodes; and a second driving structure, electrically connected with the second electrodes, and controlling the second grating period to form a second light-shielding region and a second light-transmitting region by applying voltages to the second electrodes, where a width of the second light-transmitting region in the first direction is less than a width of the first light-transmitting region in the first direction.