Display Panel Voltage Line Overlap for Narrow Bezel Layout
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Solution Overview
Problem
Existing display apparatuses face challenges in minimizing bezel size while maintaining aesthetic appeal and preventing an increase in resistance, particularly in vehicle-mounted displays that require limited viewing angles and privacy protection.
Innovation Solution
The display apparatus incorporates a design with a substrate featuring a display area and non-display area, including a light-emitting part, pixel transistor, gate driving unit, and low-potential voltage line, where the gate driving unit and low-potential voltage line overlap in the non-display area, and utilizes multiple conductive layers for the low-potential voltage line to minimize bezel size without increasing resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the bezel size is reduced to improve aesthetic appeal, then the display area increases, but the resistance of the low-potential voltage line increases
Solution Approach 1:
The patent transitions from a single-layer voltage line configuration to a multi-layer configuration where the low-potential voltage line is formed in both the first conductive layer and the second conductive layer. This dimensional change in the conductive structure allows the voltage line to span across multiple layers, effectively reducing resistance while maintaining a minimized bezel size.
Solution Approach 2:
The patent uses a composite conductive structure by forming the low-potential voltage line with multiple conductive layers (first conductive layer and second conductive layer). This composite approach combines the conductive properties of multiple layers to achieve lower overall resistance, solving the contradiction between reduced bezel size and increased line resistance.
2Reliability
If the gate driving unit and low-potential voltage line are arranged separately to maintain low resistance, then the bezel size increases, but the aesthetic appeal decreases
Solution Approach 1:
The patent merges the arrangement of the gate driving unit and low-potential voltage line by allowing them to overlap in the planar view. The low-potential voltage line extends into the non-display area and overlaps with the gate driving unit, effectively combining their spatial occupation and minimizing the bezel size while maintaining low resistance through the multi-layer configuration.
Solution Approach 2:
The patent resolves the spatial conflict between the gate driving unit and voltage line by utilizing the vertical dimension with multiple conductive layers. The voltage line in the second conductive layer can overlap with the gate driving unit without electrical interference, allowing compact arrangement that minimizes bezel size while maintaining electrical performance.
3Area of stationary object
If multiple conductive layers are used to minimize bezel size, then the manufacturing process complexity increases, but production energy may increase
Solution Approach 1:
The patent achieves multi-functionality by using the second conductive layer not only for the low-potential voltage line but also allowing it to overlap with the gate driving unit. This universal use of the multi-layer structure serves both electrical function (low resistance) and spatial function (minimized bezel), optimizing the manufacturing process by consolidating functions rather than adding separate structures.
Data Source
AI summary
A display apparatus may include a substrate including a display area and a non-display area disposed around the display area, a light-emitting part disposed on the substrate in the display area, a pixel transistor disposed on the substrate in the display area, a gate driving unit disposed on the substrate in the non-display area and connected to the pixel transistor, and a low-potential voltage line disposed on the substrate in the non-display area and connected to the light-emitting part, wherein the gate driving unit and the low-potential voltage line overlap each other in the non-display area.