Folded Display Driver Layout for Narrow-Bezel Memory Pixels
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Solution Overview
Problem
Display devices with digital driving systems face challenges in minimizing the peripheral area around the display area, as various lines and circuits are required for controlling memories, leading to an increased frame width.
Innovation Solution
The display device incorporates a first driver unit and a second driver unit in the peripheral area, with the first driver unit partially positioned between the second driver unit and the display area, and employs a circuit layout that minimizes unnecessary space by using arc-shaped driver units and dividing circuit units into multiple horizontal and vertical sections, allowing efficient routing of signal and scanning lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If various lines and circuits are provided in the peripheral area to control the memories in a digital driving system, then the pixel control functionality is improved, but the frame width increases
Solution Approach 1:
The patent applies dimensionality change by transitioning from a conventional linear arrangement of driver units to a folded-back configuration where the first driver unit is positioned between the display area and the second driver unit. This spatial reorganization in multiple dimensions allows signal lines to be routed more efficiently through the peripheral area, reducing the overall frame width while maintaining all necessary pixel control functionalities.
Solution Approach 2:
The patent segments the driver units into distinct first and second driver units with specific functional divisions. The first driver unit handles certain signal line controls while the second driver unit manages other aspects, allowing independent optimization of each segment's position and function. This segmentation enables the folded-back layout where each segment contributes to minimizing the total peripheral area.
2Length of stationary object
If the first driver unit is positioned between the second driver unit and the display area, then the frame width is reduced, but the circuit layout complexity increases
Solution Approach 1:
The patent employs asymmetry in the spatial arrangement of driver units, placing the first driver unit in an unconventional position between the display area and the second driver unit rather than arranging them symmetrically or linearly. This asymmetric folded-back configuration optimizes space utilization and reduces frame width, while the asymmetry itself becomes part of the simplified routing strategy for signal lines.
3Area of stationary object
If arc-shaped driver units are used to minimize unnecessary space, then the peripheral area is reduced, but the manufacturing precision requirements increase
Solution Approach 1:
The patent utilizes curved or arc-shaped driver unit configurations instead of straight linear arrangements. This curvature allows the driver units to follow optimized paths through the peripheral area, minimizing unnecessary space and reducing the overall frame width. The curved geometry enables more efficient signal line routing while the patent provides specific design guidelines to maintain manufacturing feasibility.
Data Source
AI summary
According to one embodiment, a display device includes a pair of substrates including a display area in which pixels are arranged, pixel electrodes and memories provided in the pixels, signal lines supplied with digital signals, switching elements connecting the memories and the signal lines, scanning lines supplied with scanning signals, a first driver unit, and a second driver unit. The first driver unit is provided in a peripheral area around the display area, and supplies the digital signal to the signal line. The second driver unit is provided in the peripheral area, and supplies the scanning signal to the scanning line. In the display device, at least a part of the first driver unit is provided between the display area and the second driver unit.