Transparent Storage Capacitor Layout for Higher-Aperture Display Panels
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Solution Overview
Problem
Current display panels face challenges in reducing the area occupied by pixels while maintaining an aperture ratio, leading to a lower utilization rate due to the need to avoid the light transmitting area for storage capacitors made of metal layers.
Innovation Solution
A display panel design where the light transmitting area for the organic light emitting unit corresponds to the storage area, utilizing transparent first and second electrode plates for the storage capacitor, allowing for reduced pixel area without compromising the aperture ratio.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If metal layers are used for storage capacitor electrodes, then the storage capacitor can be fabricated with conventional processes, but the aperture ratio is reduced because the storage area cannot overlap with the light transmitting area
Solution Approach 1:
The patent changes the material parameter of the electrode plates from opaque metal to transparent materials (such as ITO - indium tin oxide). This material substitution allows the storage capacitor electrodes to be positioned in the light transmitting area without blocking light, thereby resolving the contradiction between ease of manufacture and aperture ratio maintenance
Solution Approach 2:
The patent utilizes the vertical stacking dimension to place the storage capacitor directly beneath the light emitting diode in the light transmitting area. This spatial reorganization allows the storage area to overlap with the light transmitting area, eliminating the need for separate dedicated storage areas and improving the aperture ratio
2Ease of manufacture
If storage area is separated from light transmitting area, then storage capacitor can be made with metal layers, but the pixel area increases and utilization rate decreases
Solution Approach 1:
The patent merges the storage area with the light transmitting area by positioning the storage capacitor electrodes within the same pixel region. The transparent electrode plates allow both storage and light transmission functions to coexist in the same spatial footprint, thereby increasing the utilization rate while maintaining conventional fabrication processes
Data Source
AI summary
The present disclosure provides a display panel and a method for fabricating the same. The display panel includes a light transmitting area for disposing an organic light emitting unit and a storage area for disposing a storage capacitor. A location of the light transmitting area corresponds to a location of the storage area. The storage capacitor includes a first electrode plate and a second electrode plate which are composed of a transparent material.