Liquid Crystal Display Panel With Reflective Prism
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Solution Overview
Problem
Conventional LCDs suffer from high power consumption and low energy utilization due to significant light absorption by polarizers, resulting in low transmittance of about 5%.
Innovation Solution
The LCD panel incorporates a first and second substrate with liquid crystal molecules and a reflective prism, along with control electrodes and light-blocking layers, to form liquid crystal prisms that control light transmission and reflection, replacing traditional polarizers with a combination of liquid crystal and reflective prisms to enhance light transmittance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If traditional polarizers are used in LCD structure, then light control function is achieved, but light transmittance is reduced to about 5% and power consumption increases
Solution Approach 1:
The patent removes the traditional polarizer component from the LCD structure and replaces it with a combination of liquid crystal molecules and a reflective prism. This extraction of the polarizer eliminates the primary source of light absorption while maintaining the light control function through the new liquid crystal prism configuration.
Solution Approach 2:
The patent changes the optical parameters of the system by using liquid crystal molecules in different orientations (horizontal vs. vertical arrangement) to control light transmission. By adjusting the molecular orientation through applied voltage, the system achieves light control without the need for polarizers, thereby improving transmittance and reducing power consumption.
2Loss of energy
If liquid crystal molecules are arranged horizontally without voltage, then light transmission is blocked, but energy efficiency is improved
Solution Approach 1:
The patent implements a dynamic light control mechanism where liquid crystal molecules can change their orientation based on applied voltage. In the default state (no voltage), molecules are arranged horizontally to block light and save energy. When voltage is applied, molecules reorient vertically to allow light transmission, enabling dynamic control of both energy efficiency and light transmission as needed.
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
This configuration significantly increases light transmittance from 5% to 20% and reduces power consumption by optimizing light reflection and absorption, while providing a new gray-level control method.
Implementation Method 1
a control electrode configured to generate an electric field to control the liquid crystal molecules to form a liquid crystal prism
Implementation Method 2
receiving and reflecting a polarized light from the backlight module by the liquid crystal prism such that the reflected light is directed toward the reflective prism
Implementation Method 3
receiving and reflecting the reflected light by the reflective prism to a light emergent side of the LCD panel
Implementation Method 4
absorbing the transmitted light by the first light-blocking layer
Data Source
AI summary
The current disclosure relates to a liquid crystal display (LCD) panel including but not limited to, a first substrate and a second substrate which are opposite to each other to form a cell, and liquid crystal molecules and a reflective prism disposed between the first and second substrates. The first substrate and/or the second substrate is provided thereon with a control electrode configured to generate an electric field to control the liquid crystal molecules to form a liquid crystal prism. The first substrate is further provided thereon with a first light-blocking layer which has an orthogonal projection on the first substrate staggered with an orthogonal projection of the reflective prism on the first substrate.