Power Supply Unit Voltage Stabilization for OLED Displays
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Solution Overview
Problem
The power supply units for organic light emitting display devices often malfunction due to a time difference in transferring input power and enable signals, leading to abrupt voltage rises that can damage connected components.
Innovation Solution
A power supply unit with a power block and a controller that concurrently transfers input power and enable signals, allowing the controller to control the voltage and determine the driving time point, thereby preventing abrupt voltage changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the enable signal is transferred through the timing controller after the input power, then the timing control is achieved, but the voltage rises abruptly causing damage to components
Solution Approach 1:
The patent applies preliminary action by enabling the power block before transferring the input power signal. The enable signal is activated in advance to prepare the power block, ensuring that when the input power arrives, the power block is already in a ready state to handle the voltage transition smoothly, preventing abrupt voltage rises that could damage components.
Solution Approach 2:
The patent implements preliminary anti-action by using the enable signal to pre-configure the power block's internal state before the main power signal arrives. This preliminary configuration creates a protective condition that counteracts the potential harmful effect of abrupt voltage changes, effectively preventing damage to connected components.
2Speed
If the input power is transferred directly to the power supply unit, then the power delivery speed is improved, but the voltage stability deteriorates
Solution Approach 1:
The enable signal performs preliminary action by preparing the power block before the input power signal arrives. This ensures that the power block is in the correct operational state to immediately and stably process the incoming power, maintaining voltage stability while enabling fast power delivery.
Solution Approach 2:
The enable signal acts as an intermediary between the control system and the power block. It mediates the transition by first activating the power block in a controlled manner, creating a stable pathway for the subsequent input power signal, thus ensuring both speed and voltage stability.
3Ease of operation
If the enable signal is transferred after the timing controller operates, then the control sequence is maintained, but the power supply unit malfunctions
Solution Approach 1:
The enable signal is transferred in advance through the timing controller before the main power signal arrives. This preliminary action ensures that the power supply unit is properly initialized and ready to operate, maintaining the control sequence while preventing malfunctions by ensuring the power block is in the correct state before power delivery begins.
Data Source
AI summary
A power supply unit adapted to prevent or reduce damage to devices when the devices receive power with an abnormal voltage, and an organic light emitting display device using the same. An embodiment of the present invention provides a power supply unit, including: a power block including an input terminal for receiving an input power, an output terminal for outputting an output power, and an enable terminal for receiving an enable signal for controlling a driving of the power block; an input power unit configured to concurrently transfer the input power to the input terminal and the enable terminal; and a controller configured to control a voltage of the input power transferred to the enable terminal to determine the driving time point of the power block, and an organic light emitting display device using the same.