Scan Circuit Corner Layout for Display Region Expansion
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Solution Overview
Problem
In display technology, the limited space in corner regions of display panels poses challenges for arranging multiple control signal driving circuits, leading to difficulties in fabrication and potential issues like line breaks or shorts, which reduces the display region and increases the bezel size.
Innovation Solution
A scan circuit with a specific arrangement of multiple control signal driving circuits in distinct regions, including a first, second, and third region surrounding different portions of the display region, allowing for efficient signal transmission and simplifying the fabrication process by optimizing the layout.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple control signal driving circuits are arranged in corner regions of display panels, then the display region is reduced and bezel size increases, but the control signal transmission function is achieved
Solution Approach 1:
The patent transitions from two-dimensional planar arrangement of control signal driving circuits to a three-dimensional stacked arrangement. Multiple control signal driving circuits are positioned at different heights (Z-axis) above the same or overlapping planar regions, allowing efficient use of corner space while maintaining adequate separation between circuits through vertical layering.
Solution Approach 2:
The patent implements a nested arrangement where control signal driving circuits are positioned in hierarchical layers. Lower-layer circuits serve as foundational elements while upper-layer circuits are positioned above them, creating a compact nested structure that maximizes space utilization in corner regions without increasing the horizontal footprint.
2Reliability
If multiple control signal driving circuits are arranged in corner regions, then fabrication becomes difficult with potential line breaks or shorts
Solution Approach 1:
The patent divides the control signal driving circuits into distinct modular units, each comprising transistors and capacitors as separate fabricatable elements. These segmented units are positioned at defined coordinates in the corner region, allowing independent fabrication and assembly while reducing the risk of fabrication defects affecting the entire circuit system.
Solution Approach 2:
By arranging control signal driving circuits in three-dimensional space with vertical separation, the patent increases the physical distance between interconnecting lines of different circuits. This spatial segmentation across multiple layers reduces the probability of line breaks or shorts during fabrication while maintaining compact overall dimensions.
3Area of stationary object
If space is allocated for multiple control signal driving circuits in corner regions, then the display region is reduced
Solution Approach 1:
The patent utilizes vertical space (Z-axis dimension) to position control signal driving circuits above the substrate plane. This three-dimensional arrangement allows the circuits to occupy minimal horizontal area, thereby maximizing the display region while accommodating all necessary control signal driving circuits within the bezel area without increasing its size.
Solution Approach 2:
The patent merges the positioning of multiple control signal driving circuits into overlapping or adjacent planar projections in the corner region. By combining the spatial footprints of multiple circuits through vertical stacking, the total horizontal area required is minimized, preserving maximum display region while fitting all circuits within the existing bezel boundaries.
Data Source
AI summary
A scan circuit is provided, including first, second and third control signal driving circuits; wherein, in a first region, the first control signal driving circuit includes L stages, L being an integer ≥1; in a second region, the second control signal driving circuit includes M1 stages and the third control signal driving circuit includes M2 stages, M1, M2 each being an integer ≥1; in a third region, the first control signal driving circuit includes N1 stages, the second control signal driving circuit includes N2 stages, and the third control signal driving circuit includes N3 stages, N1, N2, N3 each being an integer ≥2; and the first region, the second region, and the third region surround a first portion, a second portion, and a third portion of a perimeter of a display region, respectively, the first portion, the second portion, and the third portion being at least partially non-overlapping.