Dual Initialization Signal Lines for High Refresh Rate Display Panels
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Solution Overview
Problem
Conventional display panels face challenges in increasing the refresh rate due to the relatively long duration of the screen refresh cycle, which is hindered by the need to simultaneously initialize multiple pixel circuits.
Innovation Solution
The display panel incorporates a dual initialization signal line system, where a first initialization signal line provides an enabling level to one pixel circuit, and a second initialization signal line provides a non-enabling level to another pixel circuit, allowing for separate initialization stages within the screen refresh cycle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single initialization signal line is used to initialize multiple pixel circuits simultaneously, then the circuit structure is simple, but the screen refresh cycle duration is long
Solution Approach 1:
The patent divides the single initialization signal line into multiple separate initialization signal lines (first initialization signal line and second initialization signal line). Each signal line is independently connected to different pixel circuits, allowing simultaneous initialization of multiple pixel circuits without increasing overall system complexity. This segmentation enables parallel initialization operations that shorten the screen refresh cycle duration.
2Ease of operation
If multiple pixel circuits are initialized simultaneously in the same stage, then the initialization process is simple, but the refresh rate cannot be increased
Solution Approach 1:
The patent implements periodic action by dividing the initialization process into multiple stages (first stage and second stage). Different pixel circuits are initialized in different stages through separate initialization signal lines. This periodic initialization approach allows the display panel to complete more refresh cycles within the same time period, thereby increasing the refresh rate while maintaining operational simplicity.
Data Source
AI summary
A display panel and a display device are provided. The display panel includes: a pixel circuit, a light-emitting element and an initialization signal line. The initialization signal includes an enabling level and a non-enabling level, and the enabling level of the initialization signal is configured to initialize a target node of the pixel circuit. The initialization signal line extends in a first direction, and includes a first initialization signal line and a second initialization signal line. The pixel circuit includes a first pixel circuit connected to the first initialization signal line and a second pixel circuit connected to the second initialization signal. A screen refresh cycle of the display panel includes a first stage, the first initialization signal line transmits the enabling level, and the second initialization signal line transmits the non-enabling level, in the first stage.