Electro-optical Device Circuit Redundancy for Display Defect Restoration
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Solution Overview
Problem
Existing electro-optical devices face issues with display quality due to malfunctions or defects in unit circuits, where abnormal current flow can lead to breakages in scanning or data lines, preventing defect restoration even when auxiliary circuits are switched in.
Innovation Solution
The electro-optical device incorporates a configuration with multiple scanning and data lines, allowing any one of the scanning lines or data lines to be enabled while disabling the others, and corresponding unit circuits to drive the electro-optical element, ensuring that only the necessary circuit causes a current to flow to the OLED, thereby restoring display defects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single unit circuit drives the electro-optical element, then the device structure is simple, but when the unit circuit malfunctions, the display quality is impaired and cannot be restored
Solution Approach 1:
Multiple unit circuits (first unit circuit and second unit circuit) are merged to drive a single electro-optical element. The first unit circuit corresponds to the intersection of first scanning line and first data line, while the second unit circuit corresponds to the intersection of first scanning line and second data line. Both unit circuits can drive the same electro-optical element, providing redundancy so that when one unit circuit malfunctions, the other can take over to restore display quality.
2Reliability
If abnormal current flows to scanning line or data line, then the malfunction is detected, but breakage occurs in the scanning line or data line preventing defect restoration
Solution Approach 1:
The circuit configuration is segmented into multiple independent unit circuits with separate scanning lines and data lines. When abnormal current occurs in one unit circuit, only that specific unit circuit is affected, while other unit circuits remain functional. This segmentation prevents the malfunction from propagating to the entire display, allowing defective pixels to be restored by switching to alternative unit circuits while isolating the damaged components.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration effectively restores display defects by enabling any one of the scanning or data lines, ensuring that only the required unit circuit drives the OLED, thus maintaining display quality even when malfunctions occur.
Implementation Method 1
an Organic Light Emitting Diode (hereinafter referred to as an OLED)
Data Source
AI summary
An electro-optical device includes one unit circuit provided corresponding to an intersection between one scanning line and one data line, another unit circuit provided corresponding to an intersection between the one scanning line and another data line or an intersection between another scanning line and the one data line or an intersection between another scanning line and another data line, and an electro-optical element configured to be driven by using the one unit circuit or the another unit circuit.