HSD TFT-LCD Gate Line Segmentation for Aperture Ratio
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The HSD structure in liquid crystal panels, which doubles the number of gate lines and halves the number of data lines, reduces pixel area and aperture ratio, leading to decreased pixel penetration.
Innovation Solution
A TFT-LCD display panel design with gate lines composed of subsections of varying widths, where TFT elements are connected to pixel electrodes on the wider portions, allowing for reduced total gate line width and increased pixel area, thereby enhancing pixel penetration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the number of gate lines is doubled in HSD structure, then the number of data lines is halved and manufacturing cost is reduced, but the pixel area and aperture ratio are reduced
Solution Approach 1:
The gate line is divided into multiple subsections (first subsection, second subsection, third subsection, etc.) with alternating width patterns. This segmentation allows the gate line to occupy less total area while maintaining functional integrity, thereby increasing the pixel area available for light transmission.
Solution Approach 2:
The gate line subsections are designed with asymmetric width variations, where certain subsections are narrower than others. This asymmetric design reduces the overall gate line width occupation while ensuring that critical functional regions (where TFT elements are located) maintain sufficient width for proper operation.
2Reliability
If the gate line width is increased to avoid insufficient pixel charge, then the pixel area is reduced, but the aperture ratio and penetration rate are reduced
Solution Approach 1:
Different subsections of the gate line are designed with different widths according to their specific functional requirements. Subsections where TFT elements are located maintain sufficient width for reliable charge delivery, while other subsections are narrowed to maximize pixel area. This local differentiation ensures pixel charge sufficiency without sacrificing overall aperture ratio.
Data Source
AI summary
The present disclosure discloses a TFT-LCD display panel based on an HSD structure, including: a sub-pixel unit array; a plurality of pairs of gate lines, with each pair being arranged between two adjacent rows of the sub-pixel units, wherein each gate line includes subsections arranged repeatedly and the subsection is consist of subsection portions with different widths, on the wider subsection portion of which a TFT element connected with a pixel electrode of the sub-pixel unit is placed; a plurality of data lines perpendicular to the gate lines, wherein two or more columns of sub-pixel units are arranged between two adjacent data lines. TFT elements of the present disclosure are placed on the gate lines other than the pixel region, which increases the open rate of the pixel region, and thus improves the penetration rate of the pixels.