Display Device Driving Circuit Overlap Reduces Non-Display Area
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Solution Overview
Problem
Existing display devices have a significant non-display area and compromised image quality due to the arrangement of gate lines, data lines, and pixels.
Innovation Solution
The display device incorporates gate lines and data lines within a display area, with pixels electrically connected to these lines. A driving circuit, including a first circuit element and a conductive pattern overlapping the circuit element, is disposed between pixels to reduce the non-display area and enhance image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If gate lines, data lines, and pixels are arranged in conventional display devices, then the structure is simple to manufacture, but the non-display area becomes significant and image quality is compromised
Solution Approach 1:
The patent utilizes overlapping arrangements in the vertical dimension where conductive patterns overlap circuit elements, and emission units overlap pixel circuits. This three-dimensional spatial arrangement allows components to occupy different vertical layers rather than requiring separate horizontal space, thereby reducing the non-display area while maintaining manufacturing feasibility through sequential layer formation processes
2Area of stationary object
If driving circuit and power source lines are arranged within the display area, then the non-display area is reduced, but the device complexity increases
Solution Approach 1:
The patent merges the driving circuit and power source lines within the display area, integrating multiple functional components into a unified arrangement. The conductive patterns are formed to simultaneously serve as power distribution networks and circuit interconnects, combining previously separate functions into a single integrated structure that reduces overall device complexity
3Reliability
If conductive pattern overlaps first circuit element, then electrical connection is stabilized, but manufacturing precision requirements increase
Solution Approach 1:
The patent implements a nested structure where the conductive pattern is formed to overlap and encompass the first circuit element, with the emission unit subsequently overlapping the pixel circuit. This nested arrangement creates multiple overlapping layers that provide redundant electrical connection paths, stabilizing the electrical connection while the standardized overlapping geometry simplifies manufacturing alignment requirements
Data Source
AI summary
A display device includes gate lines and data lines in a display area, pixels in the display area and electrically connected to the gate lines, the data lines, a first power source line, and a second power source line, a driving circuit supplying gate signals and data signals to the gate lines and the data lines, and including a first circuit element disposed in the display area between the pixels, and a conductive pattern disposed in the display area, overlapping the first circuit element, and electrically connected to the second power source line. Each pixel includes a first electrode electrically connected to the first power source line, a second electrode electrically connected to the second power source line, and at least one light emitting element between the first electrode and the second electrode. The conductive pattern, the first electrode, and the second electrode are on a same layer.