Display Device Pad Layout Reduces Dead Space
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Solution Overview
Problem
Conventional display devices have a significant peripheral dead space that reduces the effective image displaying area, and there is a need for a solution that enhances durability and efficiency while minimizing this dead space.
Innovation Solution
The display device incorporates a unique layout with first and second data pads, gate pads, and control signal lines arranged in specific rows and directions on substrates, along with a flexible printed circuit board and gate driver stages, which reduces the dead space by optimizing the placement of signal lines and drivers, and uses a sealant to bond substrates, ensuring efficient signal transmission and preventing heat generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the gate driver and data driver are installed as separate chips on a PCB or directly on the display panel, then the connection is stable and reliable, but the dead space at the periphery increases significantly
Solution Approach 1:
The patent merges the gate driver and data driver into a single integrated driver unit that is directly mounted on the display panel. This integration eliminates the need for separate PCB connections and reduces the peripheral dead space while maintaining reliable signal transmission through optimized internal routing and direct bonding to the panel substrate.
Solution Approach 2:
The integrated driver performs multiple functions simultaneously - it houses both the gate driver circuitry and data driver circuitry in a single component package. This multi-functional design allows both drivers to share the same mounting space and connection interface, thereby reducing the overall dead space requirement while ensuring stable connections for both signal types.
2Device complexity
If the control signal lines are routed through the center area overlapping with data pads, then the layout is simplified, but the signal transmission efficiency decreases and heat generation increases
Solution Approach 1:
The patent segments the signal line routing into distinct regions - control signal lines are routed through the peripheral area while data signal lines occupy the central area. This spatial segmentation prevents interference between different signal types, improves transmission efficiency by avoiding overlapping with data pads, and reduces heat generation through proper thermal zoning.
Solution Approach 2:
The patent utilizes the peripheral dimension of the display panel for control signal routing, separating it from the central data transmission path. By assigning different spatial zones for different signal types, the design achieves efficient signal transmission without compromising layout simplicity, as the routing paths are clearly defined in the peripheral versus central dimension.
3Area of stationary object
If the dead space is reduced by optimizing pad and line arrangement, then the image displaying area increases, but the durability and efficiency may be compromised
Solution Approach 1:
The patent applies local quality optimization by assigning specific functions to specific regions - the peripheral area houses control signal lines and driver integration for durability, while the central area is dedicated to data transmission for efficiency. This localized functional assignment ensures that each region is optimized for its specific purpose, maintaining high durability and efficiency while maximizing the overall image displaying area.
Data Source
AI summary
A display device according to an exemplary embodiment includes: a first substrate; first data pads that are disposed in a first row extending along a first direction on the first substrate, second data pads that are disposed in a second row extending along the first direction on the first substrate, gate pads that are disposed in the first row and are not disposed in the second row on the first substrate, data lines that are connected with the first data pads and the second data pads on the first substrate, and control signal lines that are connected the gate pads, wherein the control signal lines extend in a side area of the second data pads from the gate pads.