OLED Display Wiring Layout for Landscape Mode Dead Space Reduction
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Solution Overview
Problem
Conventional organic light emitting displays, particularly in landscape mode, suffer from significant dead space that limits pixel area efficiency and can cause odd-even data channel vertical line defects due to the arrangement of scan and data lines.
Innovation Solution
The arrangement of scan lines in the vertical direction and data lines in the horizontal direction within the pixel region, with the scan driver and data driver positioned accordingly, reduces dead space and prevents odd-even data channel vertical line defects by rotating the panel structure to optimize wiring and pixel circuit layout.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If scan lines and data lines are arranged in conventional layout for landscape mode display, then the display can function normally, but dead space increases and pixel area ratio decreases
Solution Approach 1:
The patent applies inversion by rotating the conventional portrait-mode wiring arrangement to landscape mode. Specifically, scan lines that traditionally run horizontally are arranged vertically, and data lines that traditionally run vertically are arranged horizontally. This inverted arrangement optimizes the landscape display format by reducing dead space and improving pixel area ratio while maintaining normal display functionality.
2Area of stationary object
If scan driver and data driver are positioned at edges of the panel, then wiring connections are simplified, but dead space increases due to space occupied by drivers and their connections
Solution Approach 1:
The patent utilizes the dimensionality change by transitioning from portrait to landscape orientation, which fundamentally alters the spatial relationships between drivers and pixel regions. This dimensional transformation allows the scan driver and data driver to be positioned at edges that minimize dead space in landscape mode, while the rotated wiring arrangement ensures connections remain manufacturable.
3Reliability
If conventional line arrangement is used in landscape mode, then manufacturing is straightforward, but odd-even data channel vertical line defects occur
Solution Approach 1:
The patent eliminates odd-even data channel vertical line defects by inverting the conventional wiring arrangement. By rotating the scan and data line orientations to match landscape mode properly, the patent prevents the interleaving pattern that causes vertical line defects in conventional landscape implementations, thereby improving display reliability.
Data Source
Figure 1
Figure 2A~2B
Figure 2C~3
AI summary
An organic light emitting display with a reduced dead space. The organic light emitting display includes a scan driver for supplying scan signals to a plurality of scan lines; a data driver for supplying data signals to a plurality of data lines; and a pixel region including a plurality of pixels at crossing regions of the scan lines with the data lines. The pixels include organic light emitting diodes (OLEDs) and pixel circuits for controlling currents flowing to the OLEDs. The scan lines are arranged to extend along a vertical direction of a screen realized in the pixel region. The data lines are arranged to extend along a horizontal direction of the screen. The pixels are configured to horizontally display an image on the screen.