Wireless Display Panel Connection via Integrated Substrate Capacitors
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional display devices require physical connections between printed circuit boards (PCBs) and display panels, which complicates manufacturing and reworking, increases production time, and can lead to damage during reconfiguration.
Innovation Solution
Implementing a wireless connection between the PCB and display panel using a wireless transmission antenna unit on the PCB and a wireless reception antenna unit on the display panel, eliminating the need for physical connections and allowing for a chip-on-film or chip-on-glass configuration with integrated capacitors to enhance mechanical strength and reduce thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a physical connection (FPCB) is used to connect the PCB and display panel, then reliable electrical connection is achieved, but manufacturing time increases and reworking complexity increases
Solution Approach 1:
The patent replaces the mechanical physical connection system (FPCB) with a wireless transmission system. The wireless transmission antenna unit on the PCB and wireless reception antenna unit on the display panel enable data and power transmission without physical contact, eliminating the need for FPCB bonding processes and reducing manufacturing time while maintaining connection reliability through wireless communication protocols
2Reliability
If a physical connection (FPCB) is used to connect the PCB and display panel, then electrical connection is established, but reworking damage risk increases
Solution Approach 1:
The patent eliminates the mechanical FPCB connection that is susceptible to damage during reworking. By using wireless transmission between the PCB and display panel, there is no physical bond to break or damage during disassembly and reconfiguration, thus removing the harmful factor of reworking damage while maintaining reliable operation through wireless communication
3Adaptability or versatility
If a driving chip with high capacity capacitor is attached using COF/COG/COP method, then wireless data reception is enabled, but device thickness increases
Solution Approach 1:
The patent addresses the thickness issue by integrating the capacitor into the display substrate structure itself rather than adding it as a separate component in the COF/COG/COP configuration. The capacitor is formed within the substrate layers, utilizing the vertical stacking of substrate layers to achieve the required capacitance without increasing the overall device thickness, thus enabling wireless reception capability while maintaining a thin profile
4Productivity
If wireless connection is implemented, then manufacturing time is reduced, but mechanical strength requirements increase
Solution Approach 1:
The patent merges the capacitor function with the display substrate structure, integrating multiple functions (structural support, electrical connection, and energy storage) into a unified substrate design. This integration strengthens the substrate by giving it multiple structural and functional roles, thereby meeting enhanced mechanical strength requirements while maintaining the manufacturing efficiency benefits of wireless connection
Data Source
AI summary
A display device includes: a display substrate in which a display area and a non-display area surrounding the display area are defined, where the display area includes a plurality of pixels; and a display driving chip disposed on the display substrate. The display substrate includes: a base substrate; a first conductive layer disposed on the base substrate; a first insulating layer disposed on the first conductive layer; and a second conductive layer disposed on the first insulating layer. The first conductive layer includes a first capacitor electrode disposed in the non-display area. The second conductive layer includes a second capacitor electrode disposed in the non-display area. The first and second capacitor electrodes overlap each other with the first insulating layer therebetween and collectively defined a first capacitor. The first and second capacitor electrodes are connected to the display driving chip.