In-Cell Touch Panel Narrow Frame Layout via Shared GOA Circuit
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing in-cell touch panels with mutual capacitive designs have a wide frame due to the arrangement of Gate Driver On Array (GOA) circuits and signal lines, making it difficult to achieve a narrow frame design.
Innovation Solution
The touch panel design eliminates signal lines between the edges and frames, incorporating a first driving circuit and GOA circuit with shared driving signals, and arranges sensor pads in a rectangular array, allowing for a reduced distance between edges and frames, facilitating a narrow frame layout.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If GOA circuit and signal lines are arranged between the edge and frame, then the touch panel can function properly, but the frame width increases
Solution Approach 1:
The patent merges the first driving circuit with the GOA circuit by making them share the same stage transmission unit and driving signals. This consolidation eliminates the need for separate signal lines between the edge and frame, thereby reducing frame width while maintaining proper touch panel function.
Solution Approach 2:
The stage transmission unit serves multiple functions: it drives both the first driving circuit and the GOA circuit simultaneously. This multi-functionality reduces the number of output pins required from the IC and eliminates redundant signal lines, achieving narrow frame design.
2Reliability
If first driving circuit is separate from GOA circuit, then circuit functionality is maintained, but layout space increases
Solution Approach 1:
The first driving circuit is merged into the GOA circuit structure, sharing the stage transmission unit. This integration maintains all necessary circuit functionalities while significantly reducing the layout space required in the peripheral area.
Solution Approach 2:
The first driving circuit is nested within the GOA circuit architecture, with both circuits sharing the same stage transmission unit and control signals. This nesting arrangement optimizes space utilization while preserving independent functionality of both circuits.
Data Source
AI summary
The technical field of touch panel is related to. A touch panel provided herein includes a touch area and a peripheral area. A first driving circuit and a GOA circuit are provided in the peripheral area. The first driving circuit and the GOA circuit include same stage transmission units, and share a same driving signal. The first driving circuit is sandwiched in the GOA circuit, and thus a layout space of the first driving circuit can be saved, which can facilitate realization of narrow frame design. Sensor pads in the touch area are arranged in a rectangular array, and a first sensor pad and a last sensor pad of each row of sensor pads are connected with the first driving circuit respectively. Two adjacent sensor pads are connected by a first connecting line or a second connecting line. A display device including the touch panel is further provided.