Display Panel Light-Blocking Layer Brightness Optimization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional LCD panels experience color shift and reduced contrast due to light leakage between pixels, particularly when one pixel is in a bright state and an adjacent pixel is in a dark state, leading to unwanted light influence and brightness distribution issues.
Innovation Solution
A display panel design featuring a pixel array with a light-blocking layer on a second substrate, where the light-blocking layer includes specific portions that optimize the brightness distribution between electrode portions and light-blocking portions, adhering to equations that define the minimum and maximum widths to minimize light leakage and color shift.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a conventional LCD panel uses standard pixel electrode arrangement, then the device structure is simple and easy to manufacture, but light leakage occurs between pixels causing color shift and reduced contrast
Solution Approach 1:
A light-blocking layer is introduced as an intermediary element between adjacent pixels. This layer includes light-blocking portions positioned between electrode portions of adjacent pixels, serving as a mediator to prevent light from leaking between pixels while maintaining the simplicity of the overall device structure
Solution Approach 2:
The light-blocking layer is segmented into multiple light-blocking portions, each positioned between adjacent electrode portions. This segmentation allows targeted light blocking at specific locations where light leakage occurs, without requiring complete restructuring of the pixel electrode arrangement
2Object-affected harmful factors
If light-blocking portions are added between pixels, then color shift and contrast are improved, but device complexity increases
Solution Approach 1:
The light-blocking layer serves multiple functions simultaneously: it blocks light leakage between pixels, defines pixel boundaries, and maintains uniform brightness distribution. This multi-functionality reduces the need for additional separate structures, thereby limiting the increase in device complexity
3Object-affected harmful factors
If electrode portions are spaced further apart, then light leakage is reduced, but pixel area and display resolution are reduced
Solution Approach 1:
The light-blocking portions act as intermediaries that fill the spaces between electrode portions, allowing the electrodes to remain closely spaced for high resolution while preventing light leakage. This eliminates the need to increase spacing between electrodes to achieve light blocking
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 optimized brightness distribution and light-blocking configuration reduce color shift caused by light leakage, enhancing the display quality by maintaining contrast and image fidelity.
Implementation Method 1
a light-blocking layer disposed on the second substrate along the first direction in a spacing manner and including a first light-blocking portion and a second light-blocking portion
Implementation Method 2
the rotation of the LC molecules of the pixel is controlled to show the bright and dark gray-level variation by the electric field formed between the pixel electrode and the common electrode
Data Source
AI summary
A pixel array is disposed on a first substrate and comprises a pixel having a first electrode layer including a plurality of electrode portions. A light-blocking layer is disposed on a second substrate along a first direction and includes a first light-blocking portion and a second light-blocking portion. The first electrode layer is between the first light-blocking portion and the second light-blocking portion. The first light-blocking portion has a first edge away from the first electrode layer, and the electrode portions include a first electrode portion adjacent to the first light-blocking portion. A brightness distribution of the pixel along the first direction has a first maximum brightness corresponding to a first position on the second substrate. PTB denotes the minimum width from the first position to the first edge, Px denotes the width of the pixel along the first direction, conforming to the following equation:3.9+77.1e-Px2.7+4.5e-Px34.3+0.5e-Px0.1≦PTB≦8.9+77.1e-Px2.7+4.5e-Px34.3+0.5e-Px0.1.