Timing Controller Synchronization for Display Compensation
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Solution Overview
Problem
Display devices, such as OLED panels, experience image defects like insensitiveness, non-uniform luminance, and gradation abnormality due to unsynchronized internal clock signals with sensing data from multiple sensors, leading to compensation failures.
Innovation Solution
A display device and timing controller system that includes sensors transmitting data with a transfer start code and sensing data, a synchronized clock signal with a clock edge evading entire transition periods, and a compensator to acquire and process sensing data for compensation, ensuring proper synchronization and compensation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an internal clock signal is used by the compensation configuration to acquire sensing data sequentially transmitted from multiple sensing configurations, then the compensation function can be performed, but the internal clock signal may not be properly synchronized with the sensing data due to phase differences in data transmission, leading to image defects
Solution Approach 1:
The patent applies preliminary action by inserting a transfer start code before the sensing data is transmitted from each sensing configuration. This allows the timing controller to identify the beginning of each data packet and properly synchronize the internal clock signal with the incoming data streams, ensuring accurate acquisition before the actual compensation process begins.
Solution Approach 2:
The patent implements feedback by using the transfer start code as a synchronization reference. The timing controller detects the transfer start code from each sensing configuration, adjusts the internal clock signal phase accordingly, and uses this synchronized clock to accurately acquire the subsequent sensing data, creating a closed-loop synchronization mechanism that prevents image defects.
2Productivity
If data are transmitted sequentially from multiple sensing configurations, then sensing information can be collected, but phase differences in transmission cause the internal clock signal to miss proper synchronization points during transition periods
Solution Approach 1:
The transfer start code is transmitted in advance before the actual sensing data from each sensing configuration. This preliminary signal serves as a synchronization marker that allows the timing controller to prepare and adjust the internal clock signal before the main data transmission begins, ensuring that no timing is lost during the sequential transmission process.
Solution Approach 2:
The transfer start code acts as an intermediary signal between the multiple sensing configurations and the timing controller's internal clock system. It mediates the synchronization by providing a recognizable reference point that the clock signal can latch onto, bridging the phase differences caused by sequential transmission from multiple sources without losing synchronization timing.
Data Source
AI summary
A display device, a driving method thereof, and a timing controller thereof able to prevent image defects, such as image insensitiveness, non-uniform luminance, and gradation abnormality, which would otherwise occur when sensing data are not ordinarily acquired from data sequentially transmitted from a plurality of sensing configurations are disclosed.