Grayscale Control Structure for Liquid Crystal Display Panels
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Solution Overview
Problem
Conventional liquid crystal displays have low light transmittance and high energy consumption due to their structural design, resulting in inefficient energy utilization and high energy costs.
Innovation Solution
A grayscale control structure is introduced, comprising a first substrate, a light extraction layer, an electrode layer, a liquid crystal layer, a filter layer, and a second substrate, with strip-shaped electrodes forming lens units and light exit strips, along with light extraction gratings, allowing for adjustable light refraction and blocking by applying voltages to the electrodes, thereby enhancing light transmittance and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a conventional liquid crystal display structure with color filter layer and two polarizing layers is used, then the display can achieve image display function, but the light transmittance is low and energy consumption is high
Solution Approach 1:
The patent removes one polarizing layer and the color filter layer from the conventional liquid crystal display structure. By extracting these light-blocking components, the display achieves higher light transmittance and lower energy consumption while maintaining display functionality through the lens unit optical control mechanism
Solution Approach 2:
The patent replaces the traditional polarizing filter-based light control mechanism with a lens unit-based optical focusing mechanism. The lens units formed by strip-shaped electrodes control light transmission through geometric optical focusing rather than through polarizing layers, fundamentally changing the light control principle
2Loss of energy
If the conventional display panel structure is used, then the manufacturing process is simple, but the energy utilization is low
Solution Approach 1:
The lens units formed by the strip-shaped electrodes serve multiple functions: they focus light to control transmission, they replace the need for polarizing layers, and they enable grayscale control. This multi-functionality improves energy utilization while the structural elements remain integrated into the existing display architecture
Solution Approach 2:
The patent changes the optical parameters of the liquid crystal layer by applying voltages to form lens units with specific focal lengths and shapes. By adjusting the voltage parameters, the lens units can dynamically control light transmission intensity, achieving efficient energy utilization through parameter optimization rather than structural 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 solution significantly increases light transmittance and energy utilization, reducing energy consumption while maintaining a high contrast ratio, thereby improving display performance.
Implementation Method 1
Light extraction gratings are disposed in the light extraction layer. The light extraction gratings are disposed opposite to the light exit strips.
Implementation Method 2
adjusting voltage applied onto each of the strip-shaped electrodes to change the shape of each of the lens units, so that light refracted by each of the lens units passes through the light exit strips or shielded by the black matrix
Data Source
AI summary
The present disclosure relates to a grayscale control structure, including a first substrate, a light extraction layer, an electrode layer, a liquid crystal layer, a filter layer and a second substrate which are sequentially stacked. The electrode layer is provided with a plurality of strip-shaped electrodes arranged in parallel to form lens units in the liquid crystal layer. The filter layer includes light exit strips and a black matrix arranged in parallel, and the light exit strips are disposed opposite to the lens units. Light extraction gratings are disposed in the light extraction layer, the light extraction gratings are disposed opposite to the light exit strips, and a projection of individual one of the light exit strips on the light extraction layer covers a corresponding one of the light extraction gratings.