Low-Power Display Driver IC Screen Segmentation
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Solution Overview
Problem
Electronic devices consume unnecessary power when transitioning to an inactive state, as they continue to display information, requiring users to periodically interact with them to maintain an active state, leading to increased power consumption.
Innovation Solution
An electronic device with a processor, memory, and display driver IC that generates a second screen with minimal information from the first screen and enters a low power state, allowing the display driver IC to show this information while the processor is in a low power state, reducing power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the electronic device maintains an active state to persistently display information through the display, then the information remains visible and accessible to the user, but unnecessary power consumption occurs
Solution Approach 1:
The patent segments the display information into two categories: essential information that should remain visible in low-power mode, and non-essential information that can be hidden. The display controller separates the full screen content into a simplified version for low-power display, allowing the device to maintain visibility of critical information while consuming less power.
Solution Approach 2:
The patent changes the display parameters when transitioning to low-power mode by adjusting the brightness, contrast, and content complexity of the displayed information. The display controller modifies these parameters to reduce power consumption while maintaining essential information visibility, such as reducing brightness levels or displaying only critical notifications.
2Use of energy by moving object
If the electronic device transitions to a low power state, then power consumption is reduced, but the display information is no longer displayed requiring user input to maintain active state
Solution Approach 1:
The patent prepares the display content in advance by identifying and prioritizing essential information before the device transitions to low-power mode. The display controller pre-processes the screen content to determine what information should remain visible, so that when the device enters low-power state, the essential information is already configured for display without requiring user intervention to wake the device.
Solution Approach 2:
The display controller automatically manages the transition to low-power display mode without requiring user input. It autonomously determines when to switch to power-saving mode and what information to display, allowing the device to serve itself by maintaining essential information visibility while conserving power, eliminating the need for periodic user interaction.
3Use of energy by moving object
If the electronic device displays minimal information in low power state, then power consumption is reduced and usability is enhanced, but the device complexity increases due to additional control mechanisms
Solution Approach 1:
The display controller is designed to perform multiple functions: it controls the display in both full-power and low-power modes, manages content prioritization, and handles the transition between states. By making the display controller multi-functional, the patent avoids adding separate dedicated hardware components for low-power display management, thus reducing overall device complexity while achieving power savings.
Data Source
AI summary
An electronic device according to various embodiments may include: a housing; a display panel exposed through part of the housing; a display driver Integrated Circuit (IC) for driving the display panel; a processor located inside the housing and operatively coupled to the display panel and the display driver IC; and a memory located inside the housing and operatively coupled to the processor and the display driver IC. The memory may store instructions, when executed, causing the processor to display a first screen through the display panel, identify whether there is a request for entering a low power state, generate information on a second screen including at least part of the first screen and write the information in the memory, in response to the request for entering the low power state, enter the low power state in response to writing the information, and causing the display driver IC to display the second screen through the display panel, based on the information, written in the memory, on the second screen, while the processor is in the low power state.