Display Driver Command Timing to Reduce Afterimages and Blinking
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Solution Overview
Problem
Existing electronic devices face challenges in efficiently controlling commands to display panels, particularly in managing image transitions and power consumption, leading to issues such as afterimages and blinking, which affect display quality and efficiency.
Innovation Solution
The electronic device employs a processor to provide commands to the display driver circuitry during extended vertical front porches of synchronization signals, allowing for image storage and re-display without affecting the processor's operations, thereby optimizing display modes and reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If commands are provided to display driver circuitry during vertical front porch intervals, then display quality is improved by minimizing afterimages and blinking, but device complexity increases due to timing control requirements
Solution Approach 1:
The patent applies preliminary action by providing commands to the display driver circuitry during the extended vertical front porch interval before the image transmission starts. This allows the display driver to prepare for the upcoming image display in advance, reducing afterimages and blinking effects. The processor provides commands (e.g., for changing refresh rates or brightness) before the vertical synchronization signal's reference time, enabling the display to be optimized for the incoming image without interfering with the processor's image transmission operations.
2Productivity
If image transmission is performed at high frequency, then productivity is improved, but power consumption increases
Solution Approach 1:
The patent applies dynamics by enabling the display driver circuitry to dynamically adjust its operation based on commands received during the extended vertical front porch. The display driver can change refresh rates, brightness levels, or other display parameters in response to processor commands, allowing the system to optimize between image transmission frequency and power consumption. This dynamic adjustment capability enables high productivity when needed while reducing power consumption during periods when maximum refresh rates are not required.
Data Source
AI summary
Provided is an electronic device. The electronic device may comprise at least one processor comprising processing circuitry. The electronic device may comprise: a display driving circuit comprising a memory; and a display comprising a display panel. At least one processor, individually and/or collectively, may be configured to: obtain, from a processor, a first image to be transmitted to the display driving circuit; provide, to the display driving circuit, at least one command to be applied to the first image from among the first image and a second image in the memory, within a time period within an extended front porch period of a second vertical synchronization signal for at least one processor, the front porch period being a reference time before a start timing of a first vertical synchronization signal for the processor; and transmit the first image to the display driving circuit based on the start timing.