Light Guide Plate Peripheral Thickness Reduction for Ultra-Thin Displays
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Solution Overview
Problem
The thickness of the light guide plate limits the height of the U-like cavity of the back plate, restricting the thickness of ultra-thin LCD modules and preventing the use of full-sealant designs in certain machines.
Innovation Solution
A light guide plate with a central region and a peripheral region, where the peripheral region has a reduced thickness, allowing for a step-like, slope, or smooth transition structure, which reduces the thickness of the peripheral region and forms concaves to accommodate a U-like structure, thereby reducing the height of the U-like cavity and the overall thickness of the display device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the light guide plate has a uniform thickness to maintain structural strength and light guide performance, then the structural stability is improved, but the thickness of the display device cannot be reduced further
Solution Approach 1:
The light guide plate employs different thickness specifications in different regions: the central region maintains a first thickness for structural stability and light guide performance, while the peripheral region uses a second thickness smaller than the first thickness. This local differentiation allows the display device to achieve ultra-thin profile without compromising the overall structural integrity and optical functionality.
2Length of moving object
If the light guide plate thickness is reduced to achieve ultra-thin display device, then the thickness bottleneck is broken, but the structural strength and light guide performance may be compromised
Solution Approach 1:
The light guide plate employs different thickness specifications in different regions: the central region maintains a first thickness for structural stability and light guide performance, while the peripheral region uses a second thickness smaller than the first thickness. This local differentiation allows the display device to achieve ultra-thin profile without compromising the overall structural integrity and optical functionality.
3Illumination intensity
If the light guide plate has uniform thickness to ensure proper light exit, then the light guide performance is improved, but the height of U-like cavity cannot be reduced
Solution Approach 1:
The light guide plate employs different thickness specifications in different regions: the central region maintains a first thickness for structural stability and light guide performance, while the peripheral region uses a second thickness smaller than the first thickness. This local differentiation allows the display device to achieve ultra-thin profile without compromising the overall structural integrity and optical functionality.
Data Source
AI summary
The present disclosure provides a light guide plate, including a light-entering surface, a light-exiting surface adjacent to the light-entering surface, and a bottom surface arranged opposite to the light-exiting surface. The light guide plate includes a central region corresponding to an active display region of a display panel and a peripheral region corresponding a non-display region of the display panel in a first direction, the peripheral region includes a first peripheral region at a side adjacent to the light-entering surface, at least the first peripheral region of the peripheral region has a thickness smaller than the central region in a second direction, the first direction is a direction in which light is propagated inside the light guide plate, and the second direction is a direction in which the light exits the light guide plate. The present disclosure further provides a backlight module and a display device.