Display Panel Gate Control Integration for Narrow Bezels
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Solution Overview
Problem
Existing organic light-emitting display panels require at least three gate driving circuits, which occupy significant space and hinder the implementation of narrow bezels.
Innovation Solution
A display panel design that integrates a gate driving circuit to control both a threshold compensation module and a light-emitting control module, reducing the need for separate gate driving circuits and minimizing the non-display area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If three gate driving circuits are used to control the pixel driving circuit, then the control function is complete, but the non-display area increases and the frame width increases
Solution Approach 1:
The patent merges the control functions of multiple gate driving circuits into a single integrated gate driving circuit. This circuit simultaneously controls both the data writing module and the light-emitting control module, reducing the number of separate gate driving circuits from three to one, thereby decreasing the non-display area and frame width while maintaining complete control functionality
Solution Approach 2:
The single gate driving circuit is designed with multi-functionality to perform multiple control tasks. It generates different gate driving signals at different time points to control the data writing module during the data writing phase and the light-emitting control module during the light-emitting phase, making one circuit serve multiple purposes that previously required separate circuits
2Reliability
If three gate driving circuits are used to control the pixel driving circuit, then the control signal coverage is sufficient, but the manufacturing cost increases
Solution Approach 1:
By combining multiple gate driving circuits into one integrated circuit, the patent reduces the total number of components that need to be manufactured and assembled. This consolidation decreases manufacturing complexity and material usage, leading to lower production costs while maintaining adequate control signal coverage through the circuit's multi-functional design
3Measurement precision
If separate gate driving circuits are used for threshold compensation module and light-emitting control module, then the control precision is high, but the device complexity increases
Solution Approach 1:
The single gate driving circuit achieves precise control of both the threshold compensation module and light-emitting control module through temporal separation of functions. It outputs specific gate driving signals at different time points - controlling the data writing module during the data writing phase and the light-emitting control module during the light-emitting phase - thereby maintaining high control precision while reducing device complexity
Data Source
AI summary
Provided are a display panel, a driving method, and a display device. The display panel includes: a gate driving circuit, a pixel driving circuit, and a light-emitting component. The pixel driving circuit includes a driving transistor, a data writing module, a threshold compensation module, and a light-emitting control module. A control terminal of the threshold compensation module and a control terminal of the light-emitting control module are electrically connected to a same gate driving circuit. The light-emitting control module includes a first light-emitting control unit and a second light-emitting control unit. The pixel driving circuit further comprises a blocking module which is electrically connected between the first power signal terminal and the first terminal of the driving transistor, and is connected in series to the first light-emitting control unit.