Dual-Screen OLED Gate Driving Circuit Power Optimization
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Solution Overview
Problem
Existing dual-screen OLED display designs suffer from high power consumption and increased costs due to separate designs for primary and secondary screens, which are continuously driven.
Innovation Solution
A display panel design featuring a first display part and a second display part located on its side, with pixel driving circuits and gate driving units that include constant voltage control units to maintain the first display part in a non-display state during at least one frame, reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the primary screen and secondary screen are separately designed and continuously driven, then the display functionality is ensured, but the power consumption increases and cost increases
Solution Approach 1:
The patent implements dynamic control of the primary screen by switching between display and non-display states based on frame timing. The gate driving unit dynamically adjusts the gate signal voltage (first voltage for non-display, second voltage for display) according to the frame period, enabling the primary screen to be turned off during periods when only secondary screen content needs to be displayed, thereby reducing power consumption while maintaining display functionality when needed
Solution Approach 2:
The patent employs periodic control by dividing the display operation into frames and selectively controlling the primary screen during specific frame periods. The gate driving unit periodically switches the primary screen between on and off states based on whether the current frame requires primary screen display, creating a rhythmic pattern of power consumption that reduces overall energy usage while ensuring display functionality is available when required
2Reliability
If the primary screen and secondary screen are separately designed, then the display functionality is ensured, but the device complexity and cost increase
Solution Approach 1:
The patent merges the gate driving functions for both the primary and secondary screens into a single integrated gate driving unit. This unified gate driving unit controls both screens through a shared control structure, reducing the number of independent driving modules needed. The merging of driving functions while maintaining separate display capabilities resolves the contradiction between functionality and complexity
Solution Approach 2:
The gate driving unit is designed with multi-functionality to control both the primary screen and secondary screen. By making the gate driving unit universal, it can perform multiple functions (driving primary screen, driving secondary screen, selectively turning off primary screen) without requiring separate dedicated modules for each function, thereby reducing overall device complexity while ensuring full display functionality
Data Source
AI summary
The present invention provides a display panel and an electronic apparatus, including a first display part and a second display part, a plurality of second gate driving units electrically connected to the second display part and arranged in cascade, a plurality of first gate driving units electrically connected to the first display part and arranged in cascade. A first gate driving unit including a first output unit for transmitting a first voltage to an output terminal in response to a voltage of a first node, a second output unit for transmitting a second voltage to the output terminal in response to a voltage of a second node, an output terminal electrically connected to a corresponding first sub-pixel, a constant voltage control unit electrically connected to a first node or a second node.