Spliced Reflective Display Light Guide Plate Joint Obscuration
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Solution Overview
Problem
Current splicing technologies for large outdoor displays face challenges such as light leakage, poor coupling efficiency, and noticeable brightness differences in spliced areas, particularly when using ChLCDs, which are difficult to produce and drive in large sizes.
Innovation Solution
A spliced reflective display system that incorporates multiple ChLCDs, a front light guide plate with optical microstructures, and a light source to achieve seamless image integration by uniformly reflecting and magnifying light across the display joints.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If splicing components are attached to the outside of the display on top of the protective glass, then the frame structures can be eliminated, but the coupling efficiency deteriorates and viewing angles narrow due to the distance from the display side
Solution Approach 1:
The patent transitions the splicing component from external attachment to internal integration by embedding it within the display device structure. Specifically, the reflective film is positioned between the liquid crystal layer and the color conversion layer, moving from the outer surface to an internal layer, thereby reducing the distance from the display side and improving coupling efficiency while maintaining ease of assembly through standardized layer integration
2Ease of manufacture
If splicing components are attached to the outside of the display, then assembly is simplified, but the overall thickness increases and display effect deteriorates
Solution Approach 1:
The splicing component (reflective film) is nested within the existing display device layers, specifically positioned between the liquid crystal layer and the color conversion layer. This nested integration allows the splicing function to be incorporated without adding external thickness, while the reflective film utilizes the existing light path within the display structure
3Area of stationary object
If large-sized ChLCDs are produced using current technology, then display size increases, but manufacturing cost increases and yield rate decreases due to production limitations
Solution Approach 1:
The patent divides the large display into multiple smaller ChLCD display devices that are spliced together to form the complete large-sized display. Each individual ChLCD panel can be manufactured within the feasible size limits of current production capabilities, maintaining high yield rates and reasonable costs, while the segmented panels are assembled into a larger overall display structure
Solution Approach 2:
The reflective film serves as an intermediary element that enables the splicing of multiple ChLCD panels. By positioning the reflective film at the boundaries between panels and utilizing its light-reflecting properties, the patent creates visual continuity across panel joints, allowing multiple smaller panels to function as a unified large display without requiring each panel to be manufactured at an excessively large size
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 reduces costs and achieves a visually seamless display effect by eliminating frame structures and optimizing light distribution, resulting in a large-scale reflective display with improved brightness uniformity and reduced thickness.
Implementation Method 1
a light guide plate having a top surface adjacent to the display side and including an optical structure... The light from the at least one light source reflects off the top surface of the front light guide plate to the multiple display devices
Implementation Method 2
The optical structure guides the path of the image light to obscure the joint adjacent to the display side... uniformly reflecting and magnifying light across the display joints
Data Source
AI summary
A spliced reflective display includes multiple display devices, a front light guide plate, and at least one light source. Among the multiple display devices, one display device is joined side-by-side with another to form an adjacent joint. The front light guide plate is affixed above the multiple display devices and is close to the display side. It has a top surface near the display side and includes an optical structure. The at least one light source is positioned at the side of the front light guide plate, and light therefrom reflects off the top surface of the front light guide plate onto the multiple display devices, and the reflected light from the display devices forms image light that is directed towards the display side to produce an image. The optical structure directs the path of the image light to obscure the adjacent joint from being visible on the display side.