Integrated Power Module Circuit for OLED Driving Voltage Control
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Solution Overview
Problem
High-resolution display devices face complexity in driving circuit design due to increased susceptibility to noise, which complicates the operation and efficiency of organic light emitting display devices.
Innovation Solution
A display device with a driving circuit that includes a power module circuit generating first and second driving voltages in response to a voltage output control signal, which includes preparation and channel selection fields, allowing for improved timing and voltage control to enhance the operation of organic light emitting diodes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If driving circuits are designed for high-resolution display devices, then display resolution is improved, but circuit complexity and noise susceptibility increase
Solution Approach 1:
The patent combines the power module circuit and driving circuit into a single integrated circuit. The power module circuit is positioned within the driving circuit, allowing power generation and signal driving functions to be merged in one location. This integration reduces the overall number of separate components and interconnections, thereby reducing noise susceptibility while maintaining high-resolution display capability.
Solution Approach 2:
The driving circuit is designed to perform multiple functions: it serves as both the signal driving circuit for the display panel and as the power module circuit that generates driving voltages. This multi-functionality eliminates the need for separate power supply circuits, reducing circuit complexity and minimizing noise interference while supporting high-resolution display operations.
2Measurement precision
If driving circuits are designed for high-resolution display devices, then display resolution is improved, but noise susceptibility increases
Solution Approach 1:
By integrating the power module circuit within the driving circuit, the patent reduces the number of separate interconnections between components. This integration minimizes the pathways through which noise can propagate between power supply and signal handling functions, thereby reducing noise susceptibility while maintaining high-resolution display performance.
Solution Approach 2:
The patent introduces a voltage output control signal as an intermediary mechanism that coordinates the operation between the power module circuit and the driving circuit. This control signal ensures proper timing and voltage levels are supplied to the organic light emitting diodes, reducing electromagnetic interference and noise susceptibility in the high-resolution display system.
3Productivity
If precise voltage control is implemented, then organic light emitting diode efficiency and brightness are improved, but circuit design complexity increases
Solution Approach 1:
The patent merges the voltage control functionality directly into the integrated driving circuit. The power module circuit generates voltages with precise control over timing and levels, and this control is built into the same circuit that drives the OLEDs. This integration achieves precise voltage control for improved OLED efficiency and brightness while avoiding the complexity of separate control systems.
Solution Approach 2:
The voltage output control signal incorporates feedback mechanisms that monitor and adjust voltage levels in real-time. This feedback ensures precise voltage control is delivered to the organic light emitting diodes, optimizing their efficiency and brightness. The feedback is implemented within the integrated circuit, maintaining precision while managing design complexity through automated control rather than manual adjustment.
Data Source
AI summary
A display device includes a display panel in which a data line and a scan line are disposed; a driving circuit configured to supply a data voltage to the data line, control an operation timing of a scan pulse applied to the scan line, and output a voltage output control signal to a signal transmission line; and a power module circuit configured to generate one or more of first and second driving voltages in response to the voltage output control signal received from the signal transmission line, wherein the voltage output control signal includes a preparation field and a channel selection field, wherein the power module circuit recognizes the voltage output control signal in response to the preparation field, and outputs the one or more of the first and second driving voltages to the driving circuit in response to the channel selection field.