Sub-pixel Unit with Different Initial Twist Angles for Luminance Control
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Solution Overview
Problem
Current liquid crystal display panels face challenges in managing multi-level luminance and power consumption requirements due to their single-function design, which limits their applicability and increases power consumption when aiming for high transmittance.
Innovation Solution
A sub-pixel unit design featuring two subpixels with different initial twist angles, allowing for independent control to achieve various luminance and power consumption modes, including low luminance with low power consumption and high luminance with high power consumption, by adjusting the working modes based on required display luminance values.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single-function design is used for liquid crystal display panels, then the device structure is simple, but the applicability is limited and power consumption increases when high transmittance is required
Solution Approach 1:
The pixel electrode is divided into a first pixel electrode and a second pixel electrode with different initial twist angles. This segmentation allows each subpixel to have different optical characteristics, enabling the display panel to adapt to different luminance and power consumption requirements by controlling different combinations of subpixels, thus resolving the contradiction between applicability and power consumption.
Solution Approach 2:
Different regions (subpixels) of the pixel unit are given different initial twist angles (5°, 7°, or 11°), creating local quality differences. This allows each subpixel to have optimized properties for specific viewing conditions, enabling the overall system to achieve high adaptability while managing power consumption efficiently by activating only the necessary subpixels.
2Illumination intensity
If high transmittance is achieved in liquid crystal display panels, then backlight brightness can be reduced, but power consumption increases
Solution Approach 1:
The display panel dynamically selects which subpixels to activate based on the required luminance level. When high transmittance is needed, only specific subpixels with appropriate initial twist angles are activated, allowing backlight brightness to be reduced while maintaining acceptable power consumption levels through dynamic control strategies.
3Adaptability or versatility
If multiple initial twist angles are used in subpixels, then multi-level luminance control is achieved, but device complexity increases
Solution Approach 1:
The pixel electrode is segmented into multiple subpixels with different initial twist angles, enabling multi-level luminance control through combinatorial activation patterns. The segmentation approach allows complex functionality to be achieved while maintaining relatively simple individual subpixel structures.
Solution Approach 2:
The pixel unit with multiple initial twist angles achieves multi-functionality by being able to operate in different modes (single subpixel activation, dual subpixel activation, or combined activation) to satisfy different luminance and power consumption requirements, thereby reducing overall device complexity through a universal design.
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 design enhances the liquid crystal display device's applicability and usability by enabling management of multi-level luminance and power consumption, reducing energy consumption while maintaining high luminance capabilities.
Implementation Method 1
a liquid crystal layer controlled by a voltage between the first electrode and the second electrode
Data Source
AI summary
The present disclosure provides a sub-pixel unit and a method of controlling the same, a pixel unit, an array substrate, and a display device. In one embodiment, a sub-pixel unit includes: at least two subpixels. Each of the at least two subpixels includes: a first electrode; a second electrode; and a liquid crystal layer controlled by a voltage between the first electrode and the second electrode; at least one of the first electrode and the second electrode is a slit electrode. The two subpixels have different initial twist angles, and the initial twist angle is an included angle between a direction of a slit of the slit electrode and a direction where major axes of liquid crystal molecules are oriented when the liquid crystal layer is in an unpowered state, in the respective subpixel.