Integrated Secondary Battery in OLED Display Panel
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Solution Overview
Problem
OLED display devices require additional voltage controllers due to voltage differences between external power supplies and internal pixel voltages, leading to complex circuit configurations and potential power interruptions.
Innovation Solution
Integration of a secondary battery with a first electrode layer, a second electrode layer, and an electrolyte layer between them, connected to a power supply voltage line, allowing for internal voltage generation and distribution to pixels without external controllers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If voltage controllers are added to match external power supply voltage with internal pixel voltage requirements, then the voltage compatibility is improved, but the circuit configuration becomes complex
Solution Approach 1:
The patent combines the power supply function directly into the pixel structure by integrating a secondary battery within each pixel. This merging eliminates the need for separate voltage controllers and external power supply lines, thereby simplifying the circuit configuration while ensuring voltage compatibility through direct internal power generation.
2Reliability
If voltage controllers are integrated into the display device, then power supply stability is improved, but the device structure becomes complex
Solution Approach 1:
The patent segments the power supply function by placing an independent secondary battery within each pixel rather than using a centralized power supply system with voltage controllers. This segmentation allows each pixel to be self-sufficient in terms of power supply, ensuring stability while avoiding the structural complexity of integrated voltage control circuits.
3Use of energy by moving object
If external power supply is used, then initial power availability is ensured, but power interruptions can occur
Solution Approach 1:
The patent implements preliminary action by pre-charging secondary batteries within each pixel during manufacturing or initial setup. These pre-charged batteries serve as internal power reserves that can sustain pixel operation during external power interruptions, ensuring continuous operation without requiring external power supply stability.
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
Simplifies the circuit configuration by eliminating the need for additional voltage controllers and provides a semi-permanent power supply, ensuring continued operation during external power interruptions.
Implementation Method 1
a secondary battery comprising a first electrode layer, a second electrode layer and an electrolyte layer interposed between the first and second electrode layers
Data Source
AI summary
An organic light emitting diode (OLED) display device and a method of fabricating the same are provided. An embodiment of the OLED display device comprises: a substrate; a secondary battery comprising a first electrode layer, a second electrode layer and an electrolyte layer interposed between the first and second electrode layers; a display panel comprising an array of organic light emitting diodes formed over the substrate, wherein the battery is interposed between the substrate and the display panel; and a power supply voltage line formed over the substrate and outside the display panel, wherein the power supply voltage line electrically interconnects the secondary battery and the display panel.