Auxiliary Wiring for Display Panel Voltage Uniformity
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Solution Overview
Problem
Organic light-emitting display apparatuses face issues with brightness uniformity due to voltage drops across voltage lines, leading to variations in pixel brightness, especially in the center regions of the display panel, resulting in low-quality images.
Innovation Solution
Incorporating an auxiliary wiring that extends between two display regions on the non-display region, connected to the voltage wirings, to ensure uniform voltage distribution across the pixels, thereby maintaining consistent brightness across the panel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If voltage lines are used to transmit driving voltage to pixels across the display panel, then pixels can be powered, but voltage drops occur leading to non-uniform brightness
Solution Approach 1:
An auxiliary wiring is introduced as an intermediary element connected between the first and second voltage wirings in the intermediate non-display region. This auxiliary wiring acts as a mediator to redistribute voltage uniformly across the display panel, compensating for voltage drops that occur in the primary voltage lines and thereby ensuring uniform brightness across all pixels.
2Area of stationary object
If display regions are spaced apart in the first direction, then intermediate non-display region is created, but wiring complexity increases
Solution Approach 1:
The auxiliary wiring serves multiple functions simultaneously: it connects the first and second voltage wirings, provides voltage distribution across the spaced display regions, and utilizes the intermediate non-display region space efficiently. This multi-functional design reduces overall wiring complexity while maintaining uniform voltage distribution.
Data Source
AI summary
A display panel including a substrate that includes a display region and a non-display region, the display region including a first and second display region spaced apart from each other, and the non-display region including an edge non-display region that surrounds the display region and an intermediate non-display region between the first and second display region; a plurality of first pixels arranged on the first display region; a plurality of second pixels arranged on the second display region; a first and second voltage wiring on the non-display region to transmit a first and second driving voltage to the first and second pixel; and an auxiliary wiring extending in a second direction perpendicular to the first direction, on the intermediate non-display region, the auxiliary wiring crossing between the first and second display region, and being connected to one of the first and second voltage wiring.