Organic Insulation Layer for Thin Film Transistor Array Substrates
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In ADS and HADS display modes, the large overlapping area between data lines and common electrodes increases overlapping capacitance, leading to a load on the data lines, which affects display quality and reduces transmission by blocking backlight.
Innovation Solution
An array substrate with an organic film insulation layer placed between the common electrode layer and the data lines, where the insulation material is absent in light transmission areas but present only in areas corresponding to the data lines, alleviating the load on data lines and improving transmission without compromising display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an organic film insulation layer is provided between the common electrode layer and data lines to reduce overlapping capacitance, then the load on data lines is reduced, but the organic film insulation material blocks backlight transmission in light transmission areas
Solution Approach 1:
The organic film insulation layer is selectively positioned only in areas corresponding to data lines, not uniformly across the entire display area. This local placement provides insulation where needed (near data lines) while leaving light transmission areas clear of obstructing materials, thus resolving the contradiction between reducing overlapping capacitance and maintaining backlight transmission.
2Reliability
If the organic film insulation layer fully covers areas corresponding to data lines to ensure adequate insulation, then overlapping capacitance is reduced, but the device complexity increases
Solution Approach 1:
The organic film insulation layer is segmented into discrete regions corresponding to data line locations rather than forming a continuous layer. This segmentation can be achieved through selective deposition or patterning processes, providing adequate insulation coverage where needed while simplifying the overall manufacturing process compared to forming and patterning a complete continuous layer.
Data Source
AI summary
An array substrate and a manufacturing method thereof, and a display device are provided. The array substrate includes a base substrate (200), gate lines (210), data lines (220), a common electrode layer (25), a plurality of pixels formed by intersecting the gate lines (210) and the data lines (220) formed on the base substrate (200), and an organic film insulation layer (260) located between the common electrode layer (250) and a layer on which the data lines (220) are located. Each of the pixels includes a light transmission area and a light shielding area, in a pattern of the organic film insulation layer (260), no organic film insulation material exists in the light transmission area, but the organic film insulation material at least remains in areas corresponding to the data lines (220). With the array substrate, the transmission of the display device is improved without influencing the display quality.