OLED Power Driver Synchronization Logic Gate Timing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In organic light emitting display (OLED) apparatuses, unintended images or 'garbage data' can appear due to timing differences between applying data and supplying power voltage, leading to distorted or fuzzy screens.
Innovation Solution
An OLED apparatus and method that includes a power driver, a driver driving unit, and a processor, where the power driver supplies driving voltage only when both the driving signal and display data signal are active, and a logic gate ensures synchronized activation, with an optional dummy frame to maintain a black screen during the transition period.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the power driver supplies driving voltage immediately when power is applied, then the display panel can be activated quickly, but unintended images or garbage data may be displayed due to timing differences between power supply and data application
Solution Approach 1:
The system performs preliminary synchronization by requiring both the driving signal and display data signal to be active before the power driver supplies driving voltage. This preliminary check ensures that data is ready before power is applied to the display panel, preventing garbage data display while maintaining quick activation through efficient signal coordination.
2Reliability
If the power driver waits for data signal before supplying voltage, then image accuracy is improved, but display activation time increases
Solution Approach 1:
The system prepares both the driving signal and display data signal in advance before the power driver activates. By having both signals ready and synchronized beforehand, the system minimizes the waiting time while ensuring accurate image display, thus reducing the perceived loss of time during activation.
Solution Approach 2:
The system uses feedback from the logic gate that monitors both driving signal and display data signal status. This feedback mechanism ensures that the power driver receives accurate timing information, allowing it to activate at the precise moment when both signals are ready, thereby optimizing both image accuracy and activation speed.
3Measurement precision
If a logic gate is added to synchronize signals, then timing precision is improved, but device complexity increases
Solution Approach 1:
The logic gate serves as an intermediary component that coordinates between the driving signal and display data signal. By introducing this single mediation element, the system achieves precise timing synchronization without requiring complex control circuits, thus minimizing the increase in device complexity while improving timing precision.
Data Source
AI summary
An organic light emitting display (OLED) apparatus including a power driver for applying a driving voltage to a display panel, a driver driving unit for applying a driving signal to the power driver, and a processor for applying a display data signal, which corresponds to a value of data displayed on the display panel, to the power driver. The power driver is configured to apply the driving voltage to the display panel when the driving signal and display data signal are each in an active state.