Transparent Display Light Guide Plate Caves Enhance Environmental Light
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Solution Overview
Problem
Prior transparent display devices suffer from poor transparent frame performance due to low external natural light brightness, affecting their effectiveness in displaying both content and background.
Innovation Solution
A transparent display device is designed with a liquid crystal display panel, polarizers, and an optical thin film, along with a backlight module featuring a light guide plate with caves and protrusions on the second light incident plane to enhance environmental light incidence, and an anti-reflective film to improve display performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a traditional light guide plate structure is used, then the device structure is simple, but the transparent frame performance is poor due to insufficient environmental light enhancement
Solution Approach 1:
The patent applies curvature by introducing cave structures (concave regions) and protrusion structures (convex regions) on the light incident plane of the light guide plate. These curved surfaces enhance the refraction and reflection of environmental light, improving light distribution and brightness uniformity without requiring additional optical components, thus resolving the contradiction between illumination intensity and device complexity.
2Illumination intensity
If no optical thin film is added, then the device structure is simple, but the display performance and light utilization are insufficient
Solution Approach 1:
The patent changes the optical parameters by introducing an optical thin film with specific refractive index and optical density on the light emitting plane. This modifies the light transmission and reflection characteristics, enhancing display brightness and contrast. The thin film approach achieves parameter optimization with minimal structural addition, balancing display performance improvement against 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
The enhanced light incidence and anti-reflective properties improve the transparent frame quality and displaying performance, addressing the issue of poor transparent frame performance in prior art.
Implementation Method 1
an optical thin film disposed on the polarizer of the light emitting plane of the liquid crystal display panel to improve a display performance of the liquid crystal display panel
Implementation Method 2
a plurality of caves are disposed on the second light incident plane to enhance the environmental light
Implementation Method 3
a plurality of protrusions are disposed on the second light incident plane of the light guide plate to enhance the environmental light
Implementation Method 4
a liquid crystal display panel configured to display image pixels
Implementation Method 5
polarizers is disposed on a light emitting plane and a light incident plane of the liquid crystal display panel to form a corresponding polarizing light
Data Source
AI summary
A transparent display device is provided herein, which comprises a display module and a backlight module. The display module includes a liquid crystal display panel, polarizers and an optical film. The backlight module includes a light source and a light guide plate, wherein the light guide plate includes a first light incident plane, a second light incident plane and a light emitting plane. The first light incident plane is disposed opposite to a light emitting plane of the light source. A plurality of caves are disposed on the second light incident plane to enhance the environmental light. The present invention raises an incident amount of the environmental light.