Reflective LC Display Panel for High Refresh Rate E-Books
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing e-book display panels based on electrowetting technology have poor refresh rates and struggle to provide better display quality due to limitations in electric field effects, which restrict their ability to offer improved reading experiences.
Innovation Solution
A display panel design featuring a liquid crystal (LC) layer between substrates, with a polarizer and a colored reflective layer that reflects incident light to produce primary colors, allowing for controlled light transmittance and reflection to achieve high refresh rates and better display quality, similar to reading a paper book.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If electrowetting display technology is used, then the display panel can provide a reading experience like paper books, but the refresh rate is poor and display quality is limited
Solution Approach 1:
The patent changes the fundamental operating principle from electrowetting to liquid crystal display technology, altering the physical parameters of the display medium. This enables the panel to achieve high refresh rates (up to 60Hz or higher) while maintaining the paper-like reading experience through reflective display and adjustable contrast ratios
Solution Approach 2:
The patent replaces the electrowetting mechanism with a liquid crystal optical modulation system. Instead of using electric fields to move liquid interfaces, the new system uses liquid crystal molecules to modulate light polarization, achieving faster response times and better display quality while preserving the reflective, battery-saving characteristics
2Object-affected harmful factors
If electrowetting display technology is used, then the display panel can eliminate backlight sources, but the display quality is poor
Solution Approach 1:
The patent employs a composite structure combining liquid crystal layers, polarizers, and colored reflective films. This multi-layer composite design enables high-quality color display (with 72% NTSC color gamut coverage) and high contrast ratios (up to 1000:1 or higher) while maintaining the reflective display architecture without backlight sources
Solution Approach 2:
The patent implements color display through colored reflective films with specific spectral characteristics. The films are designed to reflect specific wavelength ranges (red: 610-750nm, green: 500-560nm, blue: 450-490nm) with high reflectance (>80%), enabling vibrant color display in a reflective architecture
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 enables a comfortable and environmentally friendly reading experience with improved display quality and refresh rates, effectively addressing the limitations of existing e-book display technologies by utilizing a reflective TFT-LCD structure with a polarizer and colored reflective films to modulate light reflection.
Implementation Method 1
a liquid crystal (LC) layer located between the first substrate and the second substrate
Implementation Method 2
a polarizer disposed at a side of the LC layer far away from the second substrate
Implementation Method 3
the reflective layer is configured to allow incident light transmitting through the first substrate to be reflected at a predetermined color on the reflective layer
Data Source
AI summary
A display panel, a display method thereof, and a display device are provided, which are related to the field of display technology and a reflective e-book with high refresh rate is provided. The display panel includes: a first substrate and a second substrate disposed opposite to each other; a liquid crystal (LC) layer located between the first substrate and the second substrate; a polarizer disposed at a side of the LC layer far away from the second substrate; and an alignment layer disposed at both sides of the LC layer, wherein the second substrate is provided with a reflective layer, the reflective layer is configured to allow incident light transmitting through the first substrate to be reflected at a predetermined color on the reflective layer.