Pixel Boosting Capacitor for Variable Frequency Display Integration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In display apparatuses supporting variable frequencies, the integration of high-resolution pixels is hindered by the need for additional gate drivers and switching elements to operate bias operations of driving switching elements, which complicates the display panel design.
Innovation Solution
The implementation of a boosting capacitor within the pixel structure allows for the operation of bias operations without additional gate drivers or switching elements, enabling high-resolution integration by using the capacitor to manage voltage changes and apply driving currents to light emitting elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional gate driver and switching element are formed to operate bias operation of driving switching element, then hysteresis characteristic of driving switching element is enhanced, but high resolution integration of display panel becomes difficult due to additional switching elements and horizontal wirings
Solution Approach 1:
The patent merges the bias operation function into the existing pixel structure by utilizing the light emitting element initialization switching element and boosting capacitor that are already present in the pixel circuit. This integration eliminates the need for separate additional gate drivers and switching elements, thereby maintaining high resolution integration while enhancing hysteresis characteristic through the bias operation.
Solution Approach 2:
The light emitting element initialization switching element is designed to serve dual purposes: initializing the light emitting element and performing the bias operation of the driving switching element. The boosting capacitor similarly serves multiple functions in the pixel circuit. This multi-functionality approach allows the bias operation to be implemented without adding dedicated components, thus preserving integration density.
2Reliability
If additional gate driver and switching element are formed to operate bias operation, then hysteresis characteristic is enhanced, but number of horizontal wirings increases
Solution Approach 1:
The patent combines the bias operation control with existing gate signals and wiring structures. The light emitting element initialization gate signal is used to control both the initialization switching element and enable the bias operation through the boosting capacitor, eliminating the need for separate horizontal wirings that would be required for additional dedicated bias operation components.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enables high-resolution integration in display apparatuses by eliminating the need for additional gate drivers and switching elements, enhancing the hysteresis characteristic of driving switching elements and supporting variable frequency operations effectively.
Implementation Method 1
a boosting capacitor including a first electrode connected to a control electrode of the light emitting element initialization switching element and a second electrode connected to an output electrode of the data write switching element
Data Source
AI summary
A pixel includes a light emitting element, a data write switching element, a driving switching element, a light emitting element initialization switching element and a boosting capacitor. The data write switching element is configured to receive a data voltage from the outside. The driving switching element is configured to apply a driving current to the light emitting element based on the data voltage. The light emitting element initialization switching element is configured to apply an initialization voltage to a first electrode of the light emitting element. The boosting capacitor includes a first electrode connected to a control electrode of the light emitting element initialization switching element and a second electrode connected to an output electrode of the data write switching element.