Pixel Circuit Locking Control for Stable Data Writing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The data writing effect in pixel circuits of display panels is poor, affecting the display effect, due to issues during the driving process.
Innovation Solution
A pixel circuit design incorporating a drive circuit, a first storage circuit, and a locking control circuit, where the locking control circuit is turned off at a signal locking occasion to allow the first storage circuit to store a voltage associated with the data signal, bypassing the drive circuit in the data writing path, enabling fast and stable data writing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the data signal passes through the drive circuit for writing, then the drive circuit can control the data flow, but the data writing effect becomes poor and the writing speed decreases
Solution Approach 1:
The patent segments the data writing path from the drive circuit path by introducing a dedicated storage circuit (capacitor) and locking control circuit. The storage circuit is directly connected to the data signal line, creating an independent data writing pathway that bypasses the drive circuit, thereby improving both writing speed and reliability without interfering with the drive circuit's control functions.
Solution Approach 2:
The storage circuit acts as an intermediary element between the data signal line and the drive circuit. It temporarily stores the data signal voltage and provides it to the drive circuit's control terminal, ensuring stable data writing while allowing the drive circuit to maintain control over the light-emitting device without being the bottleneck for data writing speed.
2Stability of the object's composition
If the locking control circuit keeps the control terminal in floating state, then data storage is stable, but the drive circuit cannot update data efficiently
Solution Approach 1:
The locking control circuit operates periodically, switching between locked and unlocked states based on timing signals. During the locked state, it maintains the control terminal in floating state for stable data storage. During the unlocked state, it allows data signal to be written to the storage circuit. This periodic operation resolves the contradiction by providing stability when needed and update capability when appropriate.
Solution Approach 2:
The storage circuit preliminarily stores the data signal voltage before it is needed by the drive circuit. This preliminary action ensures that when the locking control circuit locks the control terminal in floating state, the data is already stored and stable, eliminating the need for continuous data transmission while maintaining readiness for drive operation.
Data Source
AI summary
A pixel circuit and a driving method therefor, and a display panel. The pixel circuit includes a drive circuit, a first storage circuit, and a locking control circuit; where the drive circuit generates a drive current according to a potential difference between a control terminal and a first terminal of the drive circuit; the first storage circuit has a first terminal electrically connected to the control terminal of the drive circuit and a second terminal electrically connected to the first terminal of the drive circuit; a control terminal of the locking control circuit is configured to access a locking control signal, and a first terminal of the locking control circuit is electrically connected to the control terminal of the drive circuit; the second terminal of the first storage circuit or a second terminal of the locking control circuit is configured to access a data signal.