Prism Light Guide Panel for LCD Motion Blur Reduction
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Solution Overview
Problem
Current liquid crystal display (LCD) technologies with side type LED backlight units suffer from motion blur and inadequate sharpness due to inefficient light propagation and assembly complexities in divisional light guide panels.
Innovation Solution
The implementation of a prism light guide panel with ridges forming prism mountains, allowing for scanning and divisional driving, which reduces motion blur and enhances image sharpness by directing light to specific regions and minimizing light propagation to other areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by stationary object
If a side type LED backlight unit is used, then power consumption is reduced and device thickness is decreased, but motion blur occurs and image sharpness deteriorates
Solution Approach 1:
The light guide panel is divided into multiple independent light guide regions (first, second, third, fourth regions) that can be independently controlled. Each region corresponds to a specific lamp unit group, allowing selective activation of light guide regions to improve image sharpness by preventing light from spreading to non-active regions while maintaining the energy-efficient side type LED backlight structure
2Manufacturing precision
If a divisional light guide panel is used to reduce motion blur, then image sharpness is improved, but device complexity and assembly difficulty increase
Solution Approach 1:
Multiple light guide panels are integrated into a single unified structure where different regions correspond to different lamp unit groups. The light guide panel includes integrated light guide portions that are formed as one piece, eliminating the need for separate assembly of multiple panels while maintaining the divisional light guiding function for improved sharpness
3Device complexity
If lamp units are positioned at side portions only, then device complexity is reduced, but light propagation efficiency deteriorates causing motion blur
Solution Approach 1:
The backlight structure implements different lamp unit arrangements in different regions: side type LED backlight units are positioned at side portions for general illumination, while additional lamp units are strategically positioned at specific locations (such as the lower portion) to enhance light propagation efficiency in critical areas. This localized enhancement improves overall light efficiency without significantly increasing device complexity
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
This solution effectively reduces motion blur and improves overall image sharpness by ensuring light is focused on corresponding driving regions, increasing brightness and contrast ratio, while simplifying assembly through a multi-layer structure.
Implementation Method 1
prism light guide panel with ridges forming prism mountains, allowing for scanning and divisional driving, which reduces motion blur and enhances image sharpness by directing light to specific regions
Data Source
AI summary
A side type light emitting diode (LED) liquid crystal display (LCD) includes a prism light guide panel in a side type LED backlight to allow scanning and divisional driving to improve motion blur of video or an overall sharpness of an image. The side type LED LCD includes: a lower cover; first and second prism light guide panels disposed in a plurality of layers on the lower cover, ridges of prism mountains formed on the first prism light guide panel being substantially perpendicular to ridges of prism mountains formed on the second prism light guide panel; lamp units being provided on at least one side of each prism light guide panel along the ridges of the prism mountains; and a liquid crystal panel separated from the prism light guide panels that receives light transmitted through the first and second light guide panels emitted from the light units.