LCD Panel Subpixel Segmentation for Low Power Multi-Color Display
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Solution Overview
Problem
Traditional liquid crystal display (LCD) panels consume high power to achieve multi-color displays, especially when reducing frequency to minimize power consumption leads to image flicker and abnormal display brightness due to unequal storage and liquid crystal capacitances in sub-pixels.
Innovation Solution
A liquid crystal display panel design featuring an array substrate with intersecting data and scan lines, including a color filter layer with upper, lower, and auxiliary color regions, and sub-pixels with adjacent upper and lower driving regions of equal area, allowing for multi-color display with reduced power consumption by controlling each region's brightness state using high and low voltages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional LCD panels use multiple gray scale voltages to achieve multi-color display, then color display quality is improved, but power consumption increases significantly
Solution Approach 1:
The patent divides each sub-pixel into two separate driving regions (first driving region and second driving region) with different color filters. This segmentation allows the display to use only two voltage levels (high and low) instead of multiple gray scale voltages, achieving multi-color display through spatial segmentation while significantly reducing power consumption.
Solution Approach 2:
The patent applies different color filters to different regions within the same sub-pixel. The first driving region has a first color filter while the second driving region has a second color filter, creating local quality differences that enable multi-color display using a unified driving mechanism with reduced voltage levels.
2Use of energy by moving object
If driving frequency is reduced to lower power consumption, then energy efficiency is improved, but image flicker and abnormal brightness occur due to unequal capacitances
Solution Approach 1:
The patent introduces an auxiliary aperture region with a third color filter that is asymmetrically positioned between the first and second driving regions. This asymmetric design compensates for capacitance inequalities by providing an additional region that balances the electrical characteristics, preventing image flicker and brightness abnormalities while maintaining low frequency driving.
Solution Approach 2:
The patent designs the auxiliary aperture region to have a specific area relationship with the first and second driving regions, aiming to equalize the storage capacitance and liquid crystal capacitance across all regions. This equipotentiality approach ensures stable display performance at low driving frequencies by preventing voltage imbalances.
3Ease of manufacture
If sub-pixels have unequal storage and liquid crystal capacitances, then manufacturing is simplified, but electric leakage causes abnormal brightness and image flicker
Solution Approach 1:
The patent merges the functions of multiple separate regions into a unified sub-pixel structure with an auxiliary aperture region. This combining approach allows the design to maintain manufacturing simplicity while achieving capacitance balance, as the auxiliary region integrates into the existing sub-pixel architecture rather than requiring separate manufacturing processes.
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 enables multi-color display under low power consumption, reduces image flicker, and maintains consistent brightness even with electric leakage, improving display performance by maintaining identical storage and liquid crystal capacitances across sub-pixels.
Implementation Method 1
causing an electric field effect of liquid crystal molecules driven by an electric field produced between two electrodes therein to control transmitting or shielding function of the light source
Implementation Method 2
control transmitting or shielding function of the light source so as to display the images
Implementation Method 3
a color filter layer including an upper color region, a lower color region and an auxiliary color region
Data Source
AI summary
The present disclosure provides a liquid crystal display panel including an array substrate and a color filter layer. The array substrate includes sub-pixels arranged in array. Each sub-pixel includes an upper driving region and a lower driving region arranged adjacent to one another and have substantially the same area. The color filter layer includes an upper color region, a lower color region, and an auxiliary color region, respectively corresponding to main aperture region of the upper driving region, lower driving region, and auxiliary aperture region of the upper driving region. The color of the upper color region is different from colors of the lower color region and the auxiliary color region respectively. The upper driving region includes two aperture regions corresponding to color zones of different colors, which can realize multi-color display under low power consumption, and can meanwhile alleviate the problem of image flicker under a low frequency.