Display Device With Offset Control Board Reducing Thickness
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Solution Overview
Problem
The existing display device configurations result in increased overall thickness and size due to substrates positioned on and outside the display panel.
Innovation Solution
A display device design featuring display drivers on the peripheral portion of the panel, with flexible wiring substrates connecting them to a wiring substrate on the opposite side, and a control board connected to the flexible wiring substrates, positioned not to overlap the panel in the thickness direction, allowing for a thinner and more compact structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a substrate is disposed on the display panel, then the display drivers can be driven, but the overall thickness of the display device increases
Solution Approach 1:
The control board is positioned in the plane direction adjacent to the display panel rather than stacking it in the thickness direction. This spatial reconfiguration moves the control function from the Z-axis (thickness) to the XY-axis (plane), allowing the display panel and control board to occupy different spatial layers, thereby reducing overall thickness while maintaining driver control capability.
2Ease of operation
If a substrate is disposed outside the display panel, then the display drivers can be driven, but the overall size of the display device increases
Solution Approach 1:
The control board integrates multiple functions including power supply, timing control, and driver control signals into a single compact unit. This consolidation merges what would otherwise be separate components (power supply circuit, timing circuit, driver control circuit) into one integrated substrate, reducing the overall area occupied by external control components.
Solution Approach 2:
The control board is positioned in the plane direction adjacent to the display panel rather than stacking it in the thickness direction. This spatial reconfiguration moves the control function from the Z-axis (thickness) to the XY-axis (plane), allowing the display panel and control board to occupy different spatial layers, thereby reducing overall thickness while maintaining driver control capability.
3Volume of moving object
If the control board is positioned to overlap the display panel in the thickness direction, then the display device can be compact, but the control board cannot be properly positioned
Solution Approach 1:
The control board is positioned in the plane direction adjacent to the display panel rather than stacking it in the thickness direction. This spatial reconfiguration moves the control function from the Z-axis (thickness) to the XY-axis (plane), allowing the display panel and control board to occupy different spatial layers, thereby reducing overall thickness while maintaining driver control capability.
Data Source
AI summary
A display device includes a display panel having a display surface, display drivers arranged on and along a peripheral portion of the display panel, a wiring substrate located on a side of the display panel opposite from the display surface and having a long shape extending in an arrangement direction of the display drivers, first flexible wiring substrates electrically connecting the display drivers to the wiring substrate, a second flexible wiring substrate extending from the wiring substrate toward an outer periphery of the display panel, and a control board connected to an extended end portion of the second flexible wiring substrate and configured to control the display drivers and disposed not to overlap the display panel in a thickness direction of the display panel and having a dimension in the thickness direction of the display panel larger than that of the wiring substrate.