Display Panel Electrostatic Protection Circuit Narrow Border Design
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Solution Overview
Problem
Display panels face issues with static electricity accumulation leading to high electrostatic currents, which can disrupt data signals and cause semiconductor breakdowns, and existing electrostatic protection circuits occupy significant space, making it difficult to achieve a narrow border in display devices.
Innovation Solution
The display panel incorporates electrostatic protection circuits connected to existing scan and light-emitting control signal lines, allowing static electricity to be discharged through these lines, eliminating the need for additional signal lines and reducing space occupancy, thereby enabling a narrower border.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional signal lines are added for electrostatic protection circuits, then electrostatic protection capability is improved, but the border width of the display panel increases
Solution Approach 1:
The patent makes existing signal lines (scan lines and light-emitting control signal lines) serve dual functions: their original functions plus serving as discharge paths for electrostatic protection circuits. This eliminates the need for additional dedicated signal lines while maintaining electrostatic protection capability, thereby reducing the border width.
Solution Approach 2:
The patent combines the electrostatic protection function with existing signal transmission lines. The scan lines and light-emitting control signal lines are merged to also function as discharge paths for electrostatic protection circuits, reducing the total number of signal lines required and minimizing the border area.
2Reliability
If additional signal lines are added for electrostatic protection circuits, then electrostatic protection capability is improved, but the space in the non-display area is occupied
Solution Approach 1:
The patent makes existing signal lines (scan lines and light-emitting control signal lines) serve dual functions: their original functions plus serving as discharge paths for electrostatic protection circuits. This eliminates the need for additional dedicated signal lines while maintaining electrostatic protection capability, thereby reducing the border width.
Solution Approach 2:
The patent combines the electrostatic protection function with existing signal transmission lines. The scan lines and light-emitting control signal lines are merged to also function as discharge paths for electrostatic protection circuits, reducing the total number of signal lines required and minimizing the border area.
3Reliability
If electrostatic protection circuits are added to protect against high electrostatic current, then semiconductor element breakdown is prevented, but the data signal transmission is disrupted
Solution Approach 1:
The patent uses controllable switches (thin-film transistors) in the electrostatic protection circuits that can dynamically change their state. During normal operation, the switches are in a state that allows data signal transmission. When electrostatic discharge is detected, the switches dynamically change state to provide a discharge path, thus protecting semiconductor elements while minimizing disruption to data signal transmission.
Solution Approach 2:
The patent introduces controllable switches as intermediary elements between the data lines and the discharge paths. These switches act as mediators that can selectively connect or disconnect the discharge paths based on the operational state, allowing normal data transmission while providing protection when needed.
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 effectively manages static electricity without additional discharge paths, stabilizing data signals and preventing semiconductor breakdowns, while reducing the visual impact of borders in display devices.
Implementation Method 1
each of the plurality of first electrostatic protection circuits is used to discharge static electricity on a data line connected to the first electrostatic protection circuit to a scan line or a light-emitting control signal line connected to the first electrostatic protection circuit
Data Source
AI summary
Provided are a display panel, a driving method, and a display device. The display panel comprises: pixel circuits arranged in rows and columns in a display area which comprises first and second display areas along a row direction, and an outer edge of the second display area extending stepwise along a column direction; data lines one-to-one corresponding to columns of the pixel circuit; signal line groups one-to-one corresponding to rows of the pixel circuits, each signal line group comprising a scan line and a light-emitting control signal line; and first electrostatic protection circuits one-to-one corresponding to data lines in the second display area, each first electrostatic protection circuit being connected to a scan line and a light-emitting control signal line in the same signal line group, for discharging static electricity on the data line to the scan line or the light-emitting control signal line.