Display Pixel Circuit Initialization With Lower Bias Voltage
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Display devices face challenges in reducing power consumption of pixel circuits, particularly in self-emitting light emitting elements that require efficient voltage management.
Innovation Solution
The display device incorporates a gate low voltage line configured to supply a second gate low voltage lower than the first gate low voltage to a bias electrode of an initialization transistor, reducing the threshold voltage and enhancing power efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a conventional gate low voltage is supplied to the bias electrode of the initialization transistor, then the transistor can operate with standard voltage levels, but the power consumption of the pixel circuit remains high
Solution Approach 1:
The patent applies parameter changes by introducing a second gate low voltage that is lower than the first gate low voltage. This voltage parameter modification is specifically applied to the bias electrode of the initialization transistor to reduce its threshold voltage, thereby reducing power consumption during the initialization process without significantly increasing device complexity
2Loss of energy
If the threshold voltage of the initialization transistor is reduced to save power, then power consumption decreases, but the voltage control becomes more complex
Solution Approach 1:
The patent implements parameter changes by modifying the gate low voltage parameter to create a second gate low voltage that is lower than the first gate low voltage. This voltage parameter adjustment is applied to the bias electrode of the initialization transistor, reducing its threshold voltage and enabling lower power consumption while maintaining manageable voltage control through a systematic approach
Data Source
AI summary
A display device includes a light emitting element disposed on a substrate, a first transistor configured to control a driving current flowing to a first node that is a first electrode 5 of the light emitting element, a second transistor configured to initialize the first node to a first initialization voltage based on a first gate signal having a first gate low voltage, and a gate low voltage line configured to supply a second gate low voltage lower than the first gate low voltage to a bias electrode of the second transistor.