LCD Panel Protrusion Structure for High Resolution Aperture Ratio
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Solution Overview
Problem
The challenge in manufacturing high-resolution liquid crystal display panels is the reduction in aperture ratio due to the limited size reduction of holes in the pixel, which can lead to a decrease in pixel formation efficiency and increased occupancy ratio, making it difficult to achieve high resolution without compromising the pixel size.
Innovation Solution
The implementation of a liquid crystal display panel design featuring a substrate with a sustain electrode and opaque wires of lower electrical resistance, along with protrusion patterns, allows for improved aperture ratio and high-resolution display by reducing the attachment margin between the array substrate and color filter substrate, and controlling liquid crystals in a vertical alignment mode using reactive mesogen molecules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the hole size in the pixel is reduced to achieve high resolution, then the resolution is improved, but the aperture ratio decreases
Solution Approach 1:
The patent transitions from a planar hole structure to a three-dimensional protrusion structure. The protrusion pattern rises from the array substrate surface, creating vertical dimensionality that allows the pixel aperture to be defined by the top surface area rather than a cross-sectional hole area, thereby maintaining high aperture ratio while enabling smaller pixel pitches for high resolution
Solution Approach 2:
The pixel electrode is nested within the protrusion pattern structure, with the protrusion serving as a structural framework that defines the pixel boundary while accommodating the electrode. This nested configuration allows the active pixel area to be maximized within the constrained pixel pitch
2Measurement precision
If the hole size is reduced to increase pixel density, then the resolution increases, but the occupancy ratio of the hole increases making pixel formation difficult
Solution Approach 1:
The pixel structure is segmented into distinct functional components: the protrusion pattern forming the structural framework and boundary, the pixel electrode occupying the top surface, and the liquid crystal layer filling the space above. This segmentation allows each component to be optimized independently, simplifying the formation process while achieving high resolution
Solution Approach 2:
By moving from a two-dimensional hole to a three-dimensional protrusion, the patent eliminates the geometric constraint where hole area becomes disproportionately large relative to pixel area at small scales. The vertical dimension provides additional space for electrode placement and liquid crystal accommodation without increasing the planar footprint
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 enhances the aperture ratio and enables the creation of high-resolution displays with smaller pixel sizes by preventing signal delay and reducing the need for additional black matrices, while effectively controlling liquid crystal molecules for efficient image display.
Implementation Method 1
controlling liquid crystal molecules in a vertical alignment (VA) mode
Implementation Method 2
displays images by driving and controlling the liquid crystal layer on the basis of an electric field difference between the array substrate and the color filter substrate
Implementation Method 3
controlling liquid crystal molecules in a vertical alignment (VA) mode using reactive mesogen molecules
Data Source
AI summary
A liquid crystal display panel is capable of implementing high resolution without reducing an aperture ratio. A liquid crystal display panel includes: a substrate; a sustain electrode at a pixel region on the substrate; opaque wires positioned around the pixel region, having a lattice form extending in a first direction and a second direction crossing the first direction, and coupled with the sustain electrode; a gate wire and a data wire insulated from the gate wire with a second insulating layer interposed therebetween and extending in the second direction; a thin film transistor coupled with the gate wire and the data wire; and a pixel electrode coupled with the thin film transistor. The sustain electrode includes a transparent conductive material, and the opaque wires includes a conductive material having an electrical resistance lower than that of the transparent conductive material.