Multi-view LCD Dual Backlight Modules Resolve Resolution Loss
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Solution Overview
Problem
Conventional multi-view LCDs suffer from reduced image resolution when viewed from different angles due to the use of barriers, lenticular plates, or prisms that control backlight transmission directions, resulting in images that are only half the resolution of the LCD panel.
Innovation Solution
A multi-view LCD configuration comprising two backlight modules with plane light sources, where the included angle between their transmitting directions ranges from 6 degrees to 176 degrees, allowing for independent and simultaneous display of different images to users at various angles without reducing resolution, achieved by alternately turning on the backlight modules and synchronizing their display times with the LCD panel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a barrier, lenticular plate, or prism is disposed to control transmitting directions of backlight sources, then multi-view effect is achieved, but image resolution decreases to half of the LCD panel resolution
Solution Approach 1:
The backlight module is segmented into multiple independent light sources (first light source and second light source) positioned at different locations. Each light source independently illuminates the LCD panel from a specific angle, enabling multiple users to view different images from different directions without compromising resolution, as each light source corresponds to a specific viewing zone
Solution Approach 2:
The invention transitions from controlling light direction in a single plane to utilizing three-dimensional spatial positioning of multiple light sources. By arranging light sources at different positions and angles in 3D space around the LCD panel, the system creates distinct viewing zones that maintain full resolution for each user regardless of viewing angle
2Adaptability or versatility
If a barrier, lenticular plate, or prism is used to control backlight transmission, then different viewing angles are enabled, but the images displayed have only half the resolution of the LCD panel
Solution Approach 1:
Different regions of the display system are assigned different functions: each light source is positioned to illuminate a specific local viewing zone at a specific angle. The first light source provides illumination for one viewing angle while the second light source provides illumination for another viewing angle, allowing each user to enjoy full resolution in their respective viewing zone without affecting others
Data Source
AI summary
A multi-view liquid crystal display for different users to watch different images from different viewing angles is provided. The multi-view liquid crystal display includes a liquid crystal display panel, a first backlight module and a second backlight module. The first backlight module is disposed below the liquid crystal display panel. The second backlight module is disposed between the first backlight module and the liquid crystal display panel. Furthermore, the first backlight module provides a first plane light source and the second backlight module provides a second plane light source. An included angle α formed between transmitting directions of the first and the second plane light sources ranges from 6 degrees to 176 degrees. Therefore, when different users watch the multi-view liquid crystal display which displays different images from different viewing angles, the resolutions of the images are the same as the resolution of the multi-view liquid crystal display panel.