Dual-Image Flat Display Azimuthal Angle Domain Pixel Structure
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Solution Overview
Problem
Current dual-image flat display devices struggle to concurrently display two full-screen images without interference, leading to clarity and integrality issues due to the smaller image overshadowing the main image.
Innovation Solution
A dual-image flat display device with a specific pixel structure featuring sub-pixels having two azimuthal angle domains, where the included angle of liquid crystal molecules is less than 180°, allowing for distinct image display in different viewing angles, and a signal control method to calculate and correct light-leakage information for enhanced image clarity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single display device displays multiple images concurrently using Picture-In-Picture or Picture-Out-Picture technology, then different image pictures can be displayed on the same screen, but a part of the main image picture is shielded by the minor image picture and the minor image picture with much smaller size influences the clarity and integrality of the information received by viewers
Solution Approach 1:
The display panel is segmented into multiple viewing angle regions, with each region displaying a different image. This is achieved by dividing the liquid crystal layer into multiple domains, where each domain has liquid crystal molecules oriented at different azimuthal angles, causing light to pass through selectively based on viewing angle, thereby displaying different images in different spatial segments simultaneously
Solution Approach 2:
The patent transitions from displaying multiple images by spatial overlay (2D plane arrangement) to displaying multiple images by viewing angle dimension. By utilizing the azimuthal angle domain of liquid crystal molecules, the system creates a new dimension for image separation, allowing full-screen images to be displayed without spatial overlap and maintaining full resolution in each viewing angle region
2Adaptability or versatility
If a single flat display panel displays two full-screen images concurrently, then different users can see different image pictures, but light-leakage occurs between different viewing angle regions causing image interference
Solution Approach 1:
The patent converts the potential harmful light-leakage effect into a beneficial selective light transmission mechanism. By precisely controlling the azimuthal angles of liquid crystal molecules in different domains, the system makes light leakage dependent on viewing angle, so that light only 'leaks' into the intended viewing angle region and not into other regions, thereby eliminating image interference while maintaining dual-image display capability
Solution Approach 2:
The patent changes the optical parameters of the liquid crystal layer by adjusting the azimuthal angles of liquid crystal molecules in different domains. By setting specific angle differences between adjacent domains, the system controls the transmission characteristics of light, creating distinct viewing angle regions with minimal cross-interference, thus resolving the light-leakage problem while enabling full-screen dual-image display
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
Enables the simultaneous display of two full-screen images with improved clarity and reduced interference, allowing users to see distinct images in different viewing regions without the negative impact of light-leakage issues.
Implementation Method 1
each of the sub-pixels includes a first azimuthal angle domain and a second azimuthal angle domain, wherein the first and second azimuthal angle domains are arranged side by side along a second direction in the sub-pixel. Besides, the included angle of the azimuthal angles of liquid crystal molecules in the first and second azimuthal angle domains is less than 180°
Data Source
AI summary
A dual-image flat display device includes a first and a second substrates parallel with each other, a liquid crystal layer having liquid crystal molecules, and at least a pixel disposed on the second substrate. The pixel includes pluralities of sub-pixels arranged side by side along a first direction. Each sub-pixel has a first azimuthal angle domain and a second azimuthal angle domain, wherein the first and second azimuthal angle domains are arranged side by side along a second direction in the sub-pixel, and the second direction is not parallel with the first direction. The azimuthal angles of liquid crystal molecules in the first and second azimuthal angle domains have an included angle less than 180°.