Cuttable LED Display Wiring for Continuous Image Display
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Solution Overview
Problem
Existing LED displays made of transparent film cannot be easily cut to achieve a desired shape without causing non-display areas due to disrupted electrical connections.
Innovation Solution
A display device with daisy-chain connected light-emitting devices on a substrate, allowing for flexible cutting and maintaining display functionality by serially connecting LEDs via daisy-chain wirings, ensuring continuous signal transmission across cuts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If LED displays are made of transparent film with matrix wiring, then they can be manufactured with standard processes, but they cannot be easily cut to achieve desired shapes without creating non-display areas
Solution Approach 1:
The LED display is divided into multiple independently controllable LED modules, each with its own control circuit. This segmentation allows the display to be cut into desired shapes while maintaining functionality of remaining segments, as each module can operate independently or be individually controlled.
Solution Approach 2:
The patent implements a scanning drive system where control signals dynamically scan through different LED modules in sequence. This dynamic scanning approach allows flexible shaping of the display area while maintaining continuous display functionality, as the scanning system can adapt to any configuration of active modules.
2Ease of manufacture
If matrix wiring is used to connect LEDs in two-dimensional arrangement, then common anode/cathode connections can be implemented, but cutting the substrate disrupts electrical connections and creates non-display areas
Solution Approach 1:
The display is segmented into independent LED modules that can be manufactured using standard matrix wiring processes. Each module contains complete anode and cathode connections, allowing the substrate to be cut between modules without disrupting electrical connections within remaining modules.
Solution Approach 2:
Different regions of the substrate are designed with different functions: LED modules contain light-emitting elements and local control circuits, while inter-module regions are designed as cut lines. This local differentiation allows standard manufacturing processes for LED modules while enabling flexible cutting flexibility for shaping the overall display.
3Adaptability or versatility
If the substrate is cut to achieve desired shapes, then adaptability to different applications is improved, but electrical connections are disrupted and display functionality is lost
Solution Approach 1:
The LED display is divided into discrete modules with self-contained electrical connections. Cutting the substrate separates these modules but does not disrupt the internal electrical connections within each module, allowing shape customization while preserving connection integrity of remaining modules.
Solution Approach 2:
LED modules are pre-manufactured with complete electrical connections and control circuits before substrate cutting. This preliminary preparation ensures that when the substrate is cut to achieve desired shapes, the electrical connections within each module remain intact and functional.
Data Source
AI summary
A display device provided with a light-emitting element. The display device includes: a substrate; a daisy-chain wiring formed on the substrate; and a plurality of light-emitting devices connected in a daisy chain via the daisy-chain wiring.