Reflective Display Panel Layout for Wider Viewing Angles
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Solution Overview
Problem
Total reflective display panels suffer from a narrower range of viewing angle and significant color shift issues at large viewing angles due to limitations in liquid crystal materials.
Innovation Solution
A display panel design featuring a reflective layer divided into patterns by slits and interspersed with spacers, where the slits and spacers are alternately arranged to diversify liquid crystal molecule alignments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If traditional liquid crystal materials are used in total reflective display panels, then the display can function with natural light, but the viewing angle range is narrow and color shift occurs at large viewing angles
Solution Approach 1:
The reflective layer is divided into multiple reflective patterns (e.g., reflective stripes or reflective dots) separated by non-reflective regions. This segmentation allows different orientations of liquid crystal molecules in different regions, creating multiple alignment directions that improve viewing angle and reduce color shift.
Solution Approach 2:
Different regions of the display panel have different reflective properties. The reflective patterns are strategically positioned and oriented to create local variations in light reflection, which correspond to different liquid crystal alignment directions. This local quality variation enables improved viewing characteristics without compromising overall display function.
2Illumination intensity
If the reflective layer is divided into patterns by slits with spacers, then liquid crystal molecule alignments are diversified, but the device structure becomes more complex
Solution Approach 1:
The reflective layer patterns and spacer structures are integrated into a unified design. The spacers are positioned to define both the liquid crystal alignment regions and the reflective pattern boundaries, combining multiple functions into a single structural element that reduces overall device complexity.
Solution Approach 2:
The reflective patterns serve multiple functions: they control liquid crystal alignment, define pixel boundaries, and provide the reflective function for total reflective display operation. This multi-functionality reduces the need for separate components, simplifying the overall device structure despite the added functionality.
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
Enhances the viewing angle range and improves color performance at large viewing angles by diversifying liquid crystal molecule alignments.
Implementation Method 1
The liquid crystal layer is disposed between the first substrate and the second substrate
Implementation Method 2
diversifying the alignment directions of a plurality of liquid crystal molecules in the liquid crystal layer
Implementation Method 3
The reflective layer is divided into a plurality of reflective patterns by a plurality of slits
Data Source
AI summary
A display panel including a first substrate, a second substrate, a liquid crystal layer, a pixel structure and a plurality of spacers is provided. The first substrate and the second substrate are disposed opposite to each other. The liquid crystal layer is disposed between the first substrate and the second substrate. The pixel structure is disposed on the first substrate and has a reflective layer. The reflective layer is divided into a plurality of reflective patterns by a plurality of slits, and the reflective patterns are connected to each other. The spacers are disposed between the first substrate and the second substrate. An orthographic projection of the spacers on the first substrate is located within an orthographic projection of the reflective patterns on the first substrate. The slits and the spacers are alternately arranged along at least one direction.