Liquid Crystal Display Panel Light-Shielding Pattern Aperture Ratio
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Solution Overview
Problem
Current liquid crystal display devices have a wide black matrix that reduces the aperture ratio due to the need to shield stray light, leading to ineffective control of liquid crystals and lower display performance.
Innovation Solution
A liquid crystal display panel with a patterned light-shielding layer made of inorganic materials, disposed between adjacent pixels, which shields stray light without the need for a black matrix, allowing for better control of liquid crystals and increased aperture ratio.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a wide black matrix is used to shield stray light, then light shielding performance is improved, but aperture ratio is reduced
Solution Approach 1:
The invention divides the light shielding function into two separate components: the black matrix (which provides basic light shielding) and the light-shielding pattern (which provides additional shielding for stray light). This segmentation allows each component to have an optimized width, with the light-shielding pattern being much narrower than a traditional wide black matrix would need to be, thereby maintaining effective stray light shielding while preserving a higher aperture ratio.
Solution Approach 2:
The invention addresses the light shielding problem by adding a new dimension - placing the light-shielding pattern on the outer surface of the substrate rather than relying solely on the black matrix within the substrate. This dimensional change allows light to be blocked from multiple angles and paths, improving stray light shielding effectiveness without requiring an increase in the black matrix width that would reduce aperture ratio.
2Object-affected harmful factors
If the black matrix width is increased to prevent light scattering, then light shielding performance is improved, but liquid crystal control effectiveness is reduced
Solution Approach 1:
The invention segments the light shielding function between the black matrix and the light-shielding pattern, allowing the black matrix to maintain its original optimized width for liquid crystal control while the light-shielding pattern provides additional scattering prevention. This ensures that liquid crystal control effectiveness is not compromised while still achieving the desired light scattering prevention.
3Object-affected harmful factors
If a wide black matrix is used to shield regions adjacent to pixels, then stray light shielding is improved, but device complexity is increased
Solution Approach 1:
The invention segments the light shielding function into the existing black matrix and an additional light-shielding pattern. While this adds a component, the light-shielding pattern uses simple geometric shapes (rectangles, triangles, or trapezoids) that can be easily manufactured, and the overall structure maintains compatibility with existing pixel arrangements, thereby limiting the increase in device complexity while achieving improved stray light shielding.
Solution Approach 2:
The light-shielding pattern is strategically placed only in specific regions where stray light problems occur, such as between adjacent pixels or in areas with specific viewing angle requirements. This localized approach provides targeted shielding where needed while minimizing the overall addition to device complexity and maintaining simplicity in regions where it is not required.
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 effectively increases the aperture ratio by directly shielding stray light outside the substrates, enabling improved liquid crystal control and display performance without the need for a wide black matrix.
Implementation Method 1
A light-shielding layer is disposed on a side of the first substrate away from the liquid crystal layer. The light-shielding layer is patterned to form a light-shielding pattern.
Data Source
AI summary
The present application provides a liquid crystal display panel and a liquid crystal display device. In the liquid crystal display panel, a light-shielding pattern is disposed on a side of a first substrate away from a liquid crystal layer, and the light-shielding pattern is disposed between two adjacent pixels. A difference between a width of the light-shielding pattern and a distance between the two adjacent pixels is less than or equal to a threshold value. A material of the light-shielding pattern includes an inorganic material. Therefore, an aperture ratio of the liquid crystal display panel is increased.