Logic Circuit Enables Intermittent Power for Touch Display
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Solution Overview
Problem
Existing display technologies face inefficiencies in power management, particularly in idle modes where continuous power supply to touch display driving circuits leads to unnecessary power consumption.
Innovation Solution
A display apparatus and method that utilize a logic circuit with an OR gate to continuously or intermittently enable a power supply circuit based on control signals from a main control circuit and a touch display driving circuit, allowing power supply only as needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If continuous power supply is provided to the touch display driving circuit in idle mode, then the display apparatus can respond quickly to touch inputs, but power consumption increases unnecessarily
Solution Approach 1:
The power supply circuit is enabled periodically during idle mode rather than continuously. The logic circuit receives a second control signal from the touch display driving circuit at specific intervals and enables the power supply circuit accordingly, achieving periodic power supply that balances quick response capability with power conservation
Solution Approach 2:
The touch display driving circuit autonomously generates the second control signal to enable the power supply circuit when needed during idle mode. This self-service mechanism allows the system to maintain touch functionality without continuous external control while minimizing power consumption
2Use of energy by moving object
If the power supply circuit is intermittently enabled in idle mode, then power consumption is reduced, but the system complexity increases due to additional control logic
Solution Approach 1:
The logic circuit merges the first control signal from the main control circuit with the second control signal from the touch display driving circuit using an OR gate. This combination simplifies the overall control structure by using a single logic unit to manage power supply enablement based on either control signal source
Solution Approach 2:
The logic circuit serves multiple functions: it processes control signals from both the main control circuit and touch display driving circuit, determines power supply enablement status, and outputs the enable signal to the power supply circuit. This multi-functionality reduces the need for separate control components
Data Source
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AI summary
A display apparatus and a method of powering the display apparatus are provided. The display apparatus includes: a main control circuit (110), configured to provide a first control signal; a touch display driving circuit (120), configured to provide a second control signal; a power supply circuit (130), coupled to the touch display driving circuit (120), and configured to provide a power supply voltage to the touch display driving circuit (120); and a logic circuit (140), coupled to the main control circuit (110), the touch display driving circuit (120), and the power supply circuit (130), and configured to continuously enable the power supply circuit (130) in a first mode and intermittently enable the power supply circuit (130) in a second mode, under a control of the first control signal and the second control signal.