Electroluminescent Display Quick Start During Off-Sensing Restart
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Solution Overview
Problem
Electroluminescent display apparatuses experience increased screen restart times when a power-on command signal is input during the off process, particularly when off sequence sensing operations are performed.
Innovation Solution
Implementing a display panel with a host system that outputs enable signals to toggle power states and a timing controller that changes display modes to an off sensing mode for electrical characteristic sensing, followed by a quick start mode to shorten the restart time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If off sensing operations are performed to sense electrical characteristics of pixels during the off process, then measurement precision of pixel characteristics is improved, but screen restart time increases
Solution Approach 1:
The patent applies preliminary action by performing off sensing operations during the off process before the power-on command is executed. The timing controller is configured to detect the off sensing completion status and determine whether to skip the off sensing process when a power-on command is received during the off process, thereby preparing the system in advance for potential quick start scenarios
Solution Approach 2:
The patent implements dynamics by making the off sensing process adjustable and conditional. The timing controller dynamically determines whether to perform or skip the off sensing process based on the timing of the power-on command relative to the off process status. This dynamic adjustment allows the system to adapt between complete sensing for accuracy and skipped sensing for speed, resolving the contradiction between measurement precision and restart time
2Reliability
If the on process waits for the off process to complete before starting, then reliability of the power state transition is improved, but screen restart time increases
Solution Approach 1:
The system performs preliminary actions during the off process by initiating off sensing operations before the power-on command is received. The timing controller monitors the off sensing completion status in advance, allowing it to make informed decisions about whether to skip the sensing process when a power-on command arrives, thus preparing the system for potential quick start scenarios
Solution Approach 2:
The patent implements dynamics by making the power state transition process adjustable and conditional. The timing controller dynamically determines whether to wait for off sensing completion or skip it based on the timing of the power-on command. This dynamic adjustment allows the system to adapt between complete sensing for reliability and skipped sensing for speed, resolving the contradiction between reliability and restart time
Data Source
AI summary
An electroluminescent display apparatus includes a display panel including a plurality of pixels configuring a screen, a host system configured to output a first enable signal toggled based on an input of a power-off command signal and a second enable signal toggled based on an input of a power-on command signal, and a timing controller configured to change a display mode, which is for displaying an input image on the screen of the display panel, to an off sensing mode for sensing an electrical characteristic value of each of the plurality of pixels, based on the first enable signal, and activate a quick start mode for stopping the off sensing mode and shortening a restart time of the display mode when the second enable signal is input while the off sensing mode is being performed.