Display Illuminator Relay Wiring Power Distribution
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Solution Overview
Problem
Reflection type display devices with illumination functions require multiple flexible printed circuits (FPCs) for power supply, increasing production costs and device size, as existing methods do not efficiently manage power distribution to both the display and illumination mediums.
Innovation Solution
A display device design that integrates a light-emitting element with a first and second electrode, connected via a conductor to a terminal and relay wiring within the display medium, allowing power to be supplied directly to the illumination medium without the need for additional FPCs, using a connection portion and relay wiring to connect the illumination and display mediums.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate FPCs are used to supply power to the display medium and illumination medium, then power supply reliability is improved, but the number of FPCs increases causing increased production cost and device size
Solution Approach 1:
The patent merges the power supply function for both the display medium and illumination medium into a single FPC. The FPC includes a power supply line that branches to connect to both the display medium and the illumination medium, eliminating the need for separate FPCs while maintaining reliable power supply to both components.
Solution Approach 2:
The single FPC is designed to serve multiple functions: it supplies power to both the display medium and the illumination medium simultaneously. The power supply line is configured to distribute electrical energy to multiple components through branching connections, making the FPC a multi-functional power distribution system.
2Power
If multiple FPCs are mounted on the display device, then power distribution capability is improved, but production cost and device size increase
Solution Approach 1:
The patent combines multiple power supply functions into a single FPC structure. The FPC contains a main power supply line that branches into multiple sub-lines to reach different components, reducing the total number of FPCs needed and simplifying the manufacturing process while maintaining adequate power distribution capability.
3Reliability
If additional FPCs are added for illumination medium power supply, then illumination function reliability is improved, but device size increases
Solution Approach 1:
The patent integrates the illumination medium's power supply connection into the same FPC that supplies power to the display medium. By using a single FPC with branching power supply lines, the device footprint is reduced while ensuring reliable power delivery to the illumination medium through dedicated branch connections.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration reduces the number of FPCs required, minimizing production costs and device size while maintaining even brightness and reducing voltage drop risks through strategic conductor placement and shared power lines.
Implementation Method 1
a light-emitting element that includes a first electrode and a second electrode and emits light with the use of power supplied between the first electrode and the second electrode
Implementation Method 2
a conductor that electrically connects the relay wiring and the connection portion
Data Source
AI summary
A display device includes an illumination medium, a display medium, and a conductor. The illumination medium includes a light-emitting element and a connection portion. The light-emitting element includes a first electrode and a second electrode and emits light with the use of power supplied between the first electrode and the second electrode. The connection portion is electrically connected to at least one of the first electrode and the second electrode. The display medium includes a terminal, relay wiring, and an electro-optical element. The relay wiring is electrically connected to the terminal. The electro-optical element controls light that is irradiated by and comes from the illumination medium according to electric energy supplied to the electro-optical element. The conductor electrically connects the relay wiring and the connection portion.