Light Modulating Liquid Crystal Cell Uniform Luminance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Multi-liquid crystal cell display panels face issues with uneven luminance due to the larger area and different signal line distributions of light modulating liquid crystal cells, leading to a grid pattern and reduced contrast, especially when displaying black images.
Innovation Solution
The design includes a light modulating liquid crystal cell with a light-exiting area and a non-light-exiting area, featuring first pixels with multiple sub-pixels connected to evenly distributed scanning and data lines, allowing for uniform brightness and independent control of each pixel, reducing signal line density and improving driving ability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the light modulating liquid crystal cell uses a larger pixel area to cover multiple display pixels, then the black state performance is improved, but uneven luminance and grid pattern occur due to signal line distribution
Solution Approach 1:
The light modulating liquid crystal cell is divided into multiple independently controllable pixels, where each pixel can be controlled separately by scanning lines and data lines. This segmentation allows different regions of the light modulating cell to be controlled independently, eliminating the grid pattern caused by uniform signal line distribution while maintaining the ability to achieve uniform black state across the entire display.
Solution Approach 2:
Different regions of the light modulating liquid crystal cell are assigned different control characteristics through the pixel structure. Each pixel can have its own voltage control, allowing local adjustment of light transmission properties. This enables the system to compensate for signal line distribution effects in specific regions while maintaining overall uniformity.
2Reliability
If the light modulating liquid crystal cell has larger pixel area covering multiple display pixels, then contrast is improved, but signal line density increases causing manufacturing complexity
Solution Approach 1:
The scanning lines and data lines in the light modulating liquid crystal cell serve multiple functions: they control individual pixels for uniform luminance distribution, maintain contrast ratio through independent pixel control, and reduce manufacturing complexity by using a standardized matrix addressing scheme similar to the display cell structure.
Solution Approach 2:
The patent introduces a new dimensional relationship between the light modulating cell and display cell, where one light modulating pixel corresponds to multiple display pixels. This dimensional transformation allows the signal line density to be optimized in the light modulating cell while maintaining appropriate resolution in the display cell, resolving the complexity issue.
3Ease of manufacture
If signal lines are arranged with larger intervals in the light modulating liquid crystal cell, then manufacturing is simplified, but luminance becomes uneven across pixels
Solution Approach 1:
The patent achieves equipotentiality in terms of luminance distribution by controlling each pixel's voltage state independently. Even though signal lines may have larger intervals, each pixel can be driven to the same voltage level, ensuring uniform luminance across all pixels. The transistor in each pixel acts as a voltage regulator to maintain this equipotential state.
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 enhances the uniformity of light transmission, increases luminance, and improves contrast by ensuring all regions of a pixel can be light transmissive or opaque simultaneously, effectively addressing the grid pattern issue and enhancing display performance.
Implementation Method 1
A multi-liquid crystal cell display panel includes at least one liquid crystal cell serving as a light modulating liquid crystal cell configured to modulate the light incident to a display liquid crystal cell
Implementation Method 2
each of the plurality of first sub-pixels includes a first transistor
Data Source
AI summary
A light modulating liquid crystal cell, a display panel, and a display device are provided. The light modulating liquid crystal cell has a light-exiting area and a non-light-exiting area surrounding the light-exiting area and includes first pixels located in the light-exiting area. Each first pixel includes first sub-pixels, and each first sub-pixels includes a first transistor. The first sub-pixels include at least two first sub-pixels arranged in a first direction and at least two first sub-pixels arranged in a second direction, and the first direction intersects the second direction. In the first sub-pixels of one first pixel, gate electrodes of the first transistors are electrically connected to a same first scanning line, and source electrodes of the first transistors are electrically connected to a same first data line.