Array Substrate Single-Hole Layout for Higher Display Aperture
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Solution Overview
Problem
The IADS display mode suffers from a small aperture ratio and low yield due to its dual-hole structure, which requires a larger structure space, reduces the pixel electrode area, and affects the uniformity of the orientation film, leading to display defects like panel stains.
Innovation Solution
An array substrate with a single-hole structure is designed, where a transferring through hole exposes both the drain and pixel electrodes, reducing the number of through holes and increasing the pixel electrode area, and additional compensation blocks are used to enhance connection reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a dual-hole structure is used in IADS display mode, then the connection between electrodes is achieved, but the aperture ratio is reduced and the pixel electrode area is decreased
Solution Approach 1:
The patent merges the functions of two separate through holes into a single transferring through hole that simultaneously exposes both the drain electrode and the pixel electrode. This consolidation reduces the total number of through holes from two to one, thereby increasing the pixel electrode area and improving the aperture ratio while maintaining all necessary electrical connections.
Solution Approach 2:
The single transferring through hole serves multiple functions: it exposes the drain electrode for electrical connection, exposes the pixel electrode for electrical connection, and eliminates the need for separate through holes. This multi-functional design optimizes the use of space within the pixel structure.
2Reliability
If a dual-hole structure is used in IADS display mode, then the electrode connections are established, but the manufacturing yield is reduced due to orientation film uniformity issues
Solution Approach 1:
By combining the two separate through holes into one transferring through hole, the patent reduces the number of interfaces and structural discontinuities that disrupt orientation film formation. This single-hole structure minimizes disturbances to the orientation film uniformity, thereby improving manufacturing yield while maintaining reliable electrode connections.
3Reliability
If a dual-hole structure is used in IADS display mode, then the electrode connections are achieved, but the structure space is increased
Solution Approach 1:
The patent consolidates two separate through hole structures into a single transferring through hole, reducing the total structure space occupied by through holes and their associated insulation and connection elements. This space optimization allows for a larger pixel electrode area and improved aperture ratio.
Data Source
AI summary
Embodiments of the present disclosure provides an array substrate and a manufacturing method thereof, a display panel. The array substrate includes: a base (10); a pixel electrode (50) and a thin film transistor disposed on the base (10); a passivation layer (16) covering the thin film transistor and the pixel electrode (50), the passivation layer (16) being provided with a transferring through hole (K1, K2) that simultaneously exposes the pixel electrode (50) and a drain electrode (15) or a source electrode (14) of the thin film transistor; a connection electrode (60) disposed on the passivation layer (16) and at the transferring through hole (K1, K2), the connection electrode (60) connected with the pixel electrode (50), and the drain electrode (15) or the source electrode (14) through the transferring through hole (K1, K2). The present disclosure realizes a connection between the drain electrode (15) or the source electrode (14) and the pixel electrode (50) by using one transferring through hole (K1, K2), which effectively reduces the number of through holes, increases an aperture ratio of the display panel, improves product quality and yield.