Liquid Crystal Grating and Prism Layer for Wide Viewing Angle Stereoscopic Display
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing stereoscopic display modules have a limited viewing angle, which restricts the realization of a stereoscopic display effect when viewed from different directions, thereby reducing user experience and the overall performance of the device.
Innovation Solution
A display module comprising a light source with light emitting diodes, a light transmitting layer with micro-lens structures, and a light splitting layer that includes a liquid crystal grating layer and a prism layer, where the liquid crystal grating layer has regions with different inclination angles and the prism layer has surfaces that refract light at specific angles to achieve a larger viewing angle by splicing images formed at different exit angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a multi-layer stacked structure with liquid crystal grating layer is used, then stereoscopic display function is achieved, but viewing angle range is limited
Solution Approach 1:
The liquid crystal grating layer is divided into multiple regions (first region, second region, third region) with different liquid crystal inclination angles. Each region directs light to different viewing angles, enabling the display to serve multiple viewing directions simultaneously. This segmentation allows the single layer to replace what would otherwise require multiple stacked layers for different viewing zones.
Solution Approach 2:
Different regions of the liquid crystal grating layer are assigned different local properties (liquid crystal inclination angles). The first region has a first inclination angle, the second region has a second inclination angle, and the third region has a third inclination angle. This local differentiation enables each region to optimize light transmission for its specific viewing angle range, expanding overall viewing flexibility without adding device layers.
2Adaptability or versatility
If conventional light transmission is used, then simple structure is maintained, but dynamic light distribution for multiple directions cannot be achieved
Solution Approach 1:
The liquid crystal grating layer enables dynamic control of light distribution by adjusting liquid crystal molecule inclination angles in different regions. This dynamic property allows the display to adaptively direct light to different viewing angles based on viewer position, achieving multi-directional stereoscopic effects without requiring complex mechanical adjustment mechanisms or multiple fixed layers.
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 the stereoscopic display effect by achieving a larger viewing angle and improving the comprehensive performance of the display device, allowing for consistent and enhanced stereoscopic viewing experiences across various directions.
Implementation Method 1
the light receiving member is used for gathering light beams emitted by the plurality of light emitting diodes
Implementation Method 2
a light transmitting layer disposed on one side of the light source where the light source emits light and provided with a plurality of micro-lens structures for converting the light beams into parallel light
Implementation Method 3
the light splitting layer comprises at least one liquid crystal grating layer... At a first period, a part of the parallel light transmits through the liquid crystal grating layer... At a second period, another part of the parallel light transmits through the liquid crystal grating layer
Implementation Method 4
the prism layer comprises at least a first prism surface and a second prism surface... a part of the parallel light transmits through the liquid crystal grating layer, irradiates onto the first prism surface, and emits from a surface of the prism layer at a first exit angle; another part of the parallel light transmits through the liquid crystal grating layer, irradiates onto the second prism surface, and exits from a surface of the prism layer at a second exit angle
Data Source
AI summary
The present disclosure provide a display device including a light source, a light transmitting layer including a plurality of micro-lens structures, and a light splitting layer including at least one liquid crystal grating layer and a prism layer. At a first period, light exiting from the first prism surface formed by transmitting a part of the parallel light through the liquid crystal grating layer has a first exit angle. At another period, light exiting from the first prism surface formed by transmitting another part of the parallel light has a second exit angle. A first image is formed in a direction of the first exit angle at a first period, a second image is formed in a direction of the second exit angle at a second period, and the first image and the second image are spliced to form a stereoscopic display image under a larger viewing angle.