Pixel Structure with Dual Transmissive Regions for Display Brightness
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Solution Overview
Problem
Conventional liquid crystal displays face limitations in brightness due to high absorption by color filters and pigment density, leading to reduced transmissivity and compromised color saturation when attempting to increase brightness by adding a white sub-pixel.
Innovation Solution
A pixel structure with two transmissive areas, each equipped with a transistor and a photo-resistance layer of different thickness or area, combined with a control system using a demultiplexer and multiplexer to optimize signal control for enhanced light compensation and color mixture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a white sub-pixel is added to increase brightness, then the transmissive light amount increases, but the color saturation decreases
Solution Approach 1:
The pixel is divided into multiple sub-pixels with different color filters (red, green, blue, and white), allowing independent control of each sub-pixel's light transmission. This segmentation enables the system to balance brightness and color saturation by adjusting the contribution of each sub-pixel type.
Solution Approach 2:
The patent introduces dynamic control mechanisms including voltage modulation and liquid crystal orientation adjustment to control the light transmission characteristics of each sub-pixel in real-time. This dynamic control allows the display to adaptively balance brightness and color saturation based on display requirements.
2Object-generated harmful factors
If photo-resistant layers with high pigment density are used to achieve color saturation, then color purity improves, but transmissivity decreases
Solution Approach 1:
Different sub-pixels use photo-resistant layers with different pigment densities and thicknesses optimized for their specific color requirements. The white sub-pixel uses a transparent photo-resistant layer with low pigment density to maximize transmissivity, while colored sub-pixels use layers with higher pigment density for saturation, allowing each region to have optimal local properties.
Solution Approach 2:
The patent employs composite structures combining multiple photo-resistant layers with different material properties in each sub-pixel. This allows optimization of both color saturation and light transmission by selecting appropriate material combinations for each sub-pixel type.
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 increases the level of brightness and color saturation by effectively managing light transmission through the pixel structure, allowing for a higher number of displayable colors and improved gray scale intensity.
Implementation Method 1
a first transistor and a first photo-resistance layer, wherein the first photo-resistance layer is formed on a filter panel
Data Source
AI summary
A pixel structure on a display panel comprises three sub-pixels where each sub-pixel can be arranged to a first transmissive region and a second transmissive region. The first transmissive region has a first transistor along with a first photo-resistant layer as well as the second transmissive region has a second transistor along with a second photo-resistant layer. The first photo-resistant layer and the second photo-resistant layer of different thickness or area are formed on a color filter. There exists a function relation between data signals received from the first transistor and the second transistor. Using these two data signals and combining the photo-resistant layers of different thickness or area will make each sub-pixel generate new level of brightness in gray scale and increase the number of displaying colors.