Display Data Latch Hold Timing for Flicker-Free OLED Driving
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Solution Overview
Problem
Existing light emitting display devices suffer from issues such as power noise leading to latch failure and screen flickering, which degrade display quality and driving reliability.
Innovation Solution
Implementing a latch hold method that pauses data latch operations during periods of power noise generation, using artificially-generated latch hold signals to synchronize with amplifier output times, thereby stabilizing data transfer and reducing noise-related failures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data latch operation continues during amplifier output periods, then data transmission efficiency is maintained, but power noise causes latch failure and screen flickering
Solution Approach 1:
The latch hold signal is generated in advance based on the amplifier output enable signal timing, pausing the latch operation before power noise occurs during amplifier output periods. This preliminary action prevents latch failure while maintaining overall data transmission efficiency.
2Reliability
If latch operation is paused to avoid power noise, then latch failure is prevented, but data transmission time increases
Solution Approach 1:
The latch hold signal operates periodically, pausing latch operations only during specific amplifier output periods when power noise occurs. This selective periodic pausing prevents latch failure while minimizing impact on overall data transmission timing.
3Productivity
If amplifier output timing is synchronized with latch operations, then data transmission bandwidth increases, but power noise causes screen flickering
Solution Approach 1:
The latch hold signal acts as an intermediary control signal that mediates between the amplifier output enable signal and the latch operation. It pauses latch operations during amplifier output periods, eliminating power noise interference while maintaining proper data transmission timing.
Data Source
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AI summary
The disclosure relates to a light emitting display device and a driving method of the same. The light emitting display device includes a display panel (150) configured to display an image, a data driver (140) configured to supply a data voltage to the display panel (150), and a timing controller (120) configured to control the data driver (140). The data driver (140) pauses a data latch operation.