Transparent Liquid Crystal Display with Rear Luminous Plate
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Solution Overview
Problem
Conventional display devices are non-transparent, preventing viewers from seeing objects or scenes behind the screen due to the presence of non-transparent backlight modules and metal plates in OLED displays.
Innovation Solution
A transparent liquid crystal display device comprising a transparent liquid crystal cell and a transparent luminous plate with a first and second transparent electrode plate, a fluorescent powder layer, and a cavity layer, where an electron generator induces electrons to emit light that passes through the liquid crystal cell, allowing both image display and background visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a non-transparent backlight module is used to provide light to the liquid crystal cell, then the image display function is achieved, but the transparency of the display panel is lost, preventing viewers from seeing objects or scenes behind the screen
Solution Approach 1:
The patent extracts the light generation function from the traditional non-transparent backlight module and relocates it to a transparent luminous plate positioned behind the liquid crystal cell. This allows the display panel to maintain transparency while still providing necessary light for image display.
Solution Approach 2:
Instead of placing the light source in front of the liquid crystal cell as in conventional designs, the patent inverts the arrangement by positioning the luminous plate behind the liquid crystal cell, enabling light to pass through the cell and maintain panel transparency.
2Illumination intensity
If a metal plate is disposed on the back side of the display panel to reflect light in OLED displays, then the light reflection function is achieved, but the transparency of the display panel is lost, preventing viewers from seeing objects or scenes behind the screen
Solution Approach 1:
The patent removes the non-transparent metal plate from the back side of the display panel and replaces it with a transparent luminous plate that generates light without blocking visibility of objects behind the screen.
Solution Approach 2:
The patent changes the material parameter of the back side component from opaque metal to transparent material, fundamentally altering the optical properties to enable both light generation and transparency.
3Ease of manufacture
If a transparent luminous plate with electron generator is used to generate light, then the transparency of the display panel is maintained allowing background visibility, but the device complexity increases due to additional components
Solution Approach 1:
The transparent luminous plate serves multiple functions: it acts as both the light source for image display and as a transparent barrier that maintains visibility of objects behind the screen, consolidating what would otherwise require separate components.
Solution Approach 2:
The patent integrates the electron generator within or adjacent to the luminous plate structure, nesting the light generation mechanism within the transparent assembly to minimize overall device complexity while maintaining transparency.
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
Enables a viewer to see both the displayed image and objects or scenes behind the screen, as the display panel, liquid crystal cell, and luminous plate are transparent, enhancing usability and functionality.
Implementation Method 1
after the fluorescent powder layer is hit by the electrons, the fluorescent powder layer emits light
Implementation Method 2
an electric field E is formed after the first transparent electrode plate and the second transparent electrode plate are electrified; the electric field E induces the electrons generated by the electron generator to move towards the fluorescent powder layer
Data Source
AI summary
A transparent liquid crystal display device including a transparent liquid crystal cell disposed on a transparent luminous plate is provided. The transparent luminous plate includes a first transparent electrode plate, a fluorescent powder layer, and a cavity layer, which are sequentially disposed on a second transparent electrode plate. An electron generator is disposed on a lateral side of the cavity layer. A viewer is able to see not only an image to be displayed by a screen of the display panel, but also an object or a scene behind the display panel through the screen.