LCD Display Module With Fringe LEDs for Seamless Splicing
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Solution Overview
Problem
Splicing technology for large format displays results in discontinuous images due to the space occupied by side traces, which prevent high-resolution displays from achieving seamless pixel continuity.
Innovation Solution
Incorporating an LED display panel on the fringe region of an LCD panel, utilizing a metal grid layer or scattering layer to alter the polarization state of light rays, allowing them to pass through polarizers and enhance image continuity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If splicing technology is used to produce large format displays, then large-sized displays can be manufactured, but side traces occupy space and cause discontinuous images
Solution Approach 1:
The patent extracts the light source function from the traditional LCD backlight system and places LED display panels at the fringe regions. This separation allows the fringe regions to emit light independently, compensating for the image discontinuity caused by side traces while maintaining the overall display functionality.
Solution Approach 2:
The patent applies different display technologies to different regions: LED display panels are specifically placed at the fringe regions where side traces are located, while the central light exiting region maintains the LCD panel structure. This local differentiation allows each region to serve its optimal function, with LED panels compensating for trace-induced discontinuities.
2Measurement precision
If the distance between outermost pixels and edge is increased to accommodate side traces, then high-resolution displays can be achieved, but image discontinuity increases
Solution Approach 1:
The patent merges the LCD panel's light exiting region with LED display panels at the fringe regions. The LED panels are integrated into the overall display structure, creating a unified display surface where both technologies work together to maintain image continuity across the entire display area, including regions with side traces.
Solution Approach 2:
The LED display panels act as intermediary elements that bridge the gap between the LCD panel's light exiting region and the side traces. By emitting light in the fringe regions, they mediate the transition and reduce the visual impact of side traces, thereby maintaining image continuity without compromising pixel resolution.
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 improves image continuity by enabling light rays from the LED display panel to enter the user's eyes through the fringe region, reducing image discontinuity caused by seams in spliced displays.
Implementation Method 1
The polarizers which are crossed to each other are located at two opposite sides of the LCD panel separately. The liquid crystal layer is disposed between the polarizers. The light ray passes through the polarizers and the metal grid layer.
Implementation Method 2
The scattering layer is disposed between the polarizers and overlaps the LED display panel. The light ray passes through the polarizers and the scattering layer. The scattering layer includes a plurality of scattering particles
Data Source
AI summary
A display module which includes a LCD display panel with a light exiting region and a fringe region, and a LED display panel and a metal grid layer is provided. The LCD display panel includes two crossed polarizers and a liquid crystal layer located between the polarizers. LED display panel is disposed on the fringe region of the LCD display panel, while the metal grid layer is located between the polarizers and overlaps the LCD display panel in the direction of the normal line of the polarizers. The LED display panel emits the light toward the fringe region, and the light transmits the polarizers and the metal grid layer. The metal grid layer includes a plurality of grid wires, and the height of each grid wire is larger than 0.1 μm.