Display Data-Line Switching for Low-Power Threshold Sensing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electronic devices face challenges in reducing power consumption while maintaining or improving display quality, particularly in the operation of display panels and data drivers.
Innovation Solution
The electronic device incorporates a display panel that can operate in two modes: a first mode where data lines receive data voltages from a data driver and a second mode where they receive a predetermined voltage from a power supply line, with switches controlling the transition between these modes to reduce power consumption and improve display accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data drivers continuously output data voltages to data lines, then display operation is maintained, but power consumption increases
Solution Approach 1:
The system dynamically switches between two operational modes: first mode where data drivers continuously output data voltages for normal display operation, and second mode where a predetermined voltage is supplied to data lines through switch parts for reduced power consumption. This dynamic mode switching resolves the contradiction by adapting the power supply strategy to operational requirements.
Solution Approach 2:
The invention changes the voltage supply parameter from variable data voltages (first mode) to a fixed predetermined voltage (second mode). This parameter change allows the system to maintain basic display functionality while significantly reducing power consumption during low-activity periods.
2Use of energy by moving object
If data drivers are turned off to reduce power consumption, then power consumption decreases, but display quality and threshold voltage measurement accuracy deteriorate
Solution Approach 1:
Before completely turning off data drivers in the second mode, the system performs preliminary actions including: supplying a predetermined voltage to data lines through switch parts, and measuring threshold voltages of pixels using this stable voltage reference. These preliminary actions ensure that even in low-power mode, the system maintains capability for accurate threshold voltage measurement, thereby resolving the contradiction between power reduction and measurement precision.
3Adaptability or versatility
If data lines receive variable data voltages, then display functionality is maintained, but voltage differences across data lines increase power consumption
Solution Approach 1:
The switch parts serve multiple functions: they act as connection switches during normal operation (first mode) and as voltage distribution switches during low-power mode (second mode). By enabling the same hardware structure to perform different functions based on operational mode, the system achieves versatility without increasing complexity, resolving the contradiction between functionality and power consumption.
Data Source
AI summary
An electronic device includes: a display panel and a data driver configured to output a plurality of data voltages to the display panel. The display panel includes a plurality of pixels and a plurality of data lines electrically connected to the plurality of pixels. The display panel is selectively driven in a first mode or a second mode, the plurality of data lines are configured to receive the plurality of data voltages, respectively, from the data driver in the first mode, the display panel or the data driver includes a switch part electrically connected to the plurality of data lines, and the plurality of data lines are configured to receive a predetermined voltage through the switch part in the second mode.