Blocking Metal Wire in Phase Change Display Control Unit
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Solution Overview
Problem
Conventional solid-state total reflection displays face challenges in enhancing display resolution, which affects the clarity of image display, and existing technologies require continuous power to maintain the phase change state of the phase change material.
Innovation Solution
A display panel design incorporating a blocking metal wire that is electrically connected to signal terminals and sources, allowing for multiplexing of circuit wires and reducing the number of wires needed, thereby increasing pixel density and improving resolution without continuous power requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional circuit wire layout is used in solid-state total reflection displays, then the display resolution is limited, but reducing the number of circuit wires is needed to increase pixel density
Solution Approach 1:
The patent merges the signal transmission function and the phase change control function into a single shared circuit wire. The control unit uses the same wire that connects the heating element to the phase change material layer, eliminating the need for separate control wires and increasing pixel density while maintaining display resolution
Solution Approach 2:
The circuit wire is designed to serve multiple functions: it acts as both the heating element connection wire and the control signal wire. By making the wire universal for both signal transmission and phase change control, the patent reduces the total number of wires needed in the display panel
2Stability of the object's composition
If continuous power is applied to maintain phase change state, then the display state is stable, but power consumption increases
Solution Approach 1:
The patent applies periodic pulsed signals instead of continuous power to the heating element. The control unit sends intermittent heating pulses to the phase change material layer, which maintains the phase change state through thermal inertia and reduced heat loss, thereby reducing overall power consumption while maintaining display stability
Solution Approach 2:
The patent utilizes the phase transition characteristics of the phase change material to maintain display state without continuous power. The material's ability to retain its phase state after heating pulses exploit the phase transition hysteresis effect, allowing the display to maintain its state with minimal power input
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
The display panel achieves higher resolution by reducing circuit wire space, allowing for more pixels and efficient signal transmission, while avoiding the need for continuous power to maintain the phase change state of the phase change material.
Implementation Method 1
The display unit at least includes a heating element and a phase change material layer over the heating element
Implementation Method 2
The solid-state total reflection displays utilize a phase change material to adjust the refractive index and/or absorbance of the phase change material by switching the phase change material between a crystalline state and an amorphous state
Data Source
AI summary
Display panel and display device are provided. The display panel includes a plurality of pixels and a blocking metal wire. The pixel includes a display unit and a control unit driving the display unit. The display unit at least includes a heating element and a phase change material layer. The heating element includes a first connecting terminal and a second connecting terminal. The control unit includes a first signal terminal and a second signal terminal. The control unit includes at least one diode, which includes a diode semiconductor layer including a first electrode contact region, a second electrode contact region and a connecting region. The blocking metal wire covers the connecting region and is insulated from the connecting region. The blocking metal wire is electrically connected to each of the first signal terminal and the first signal source or to each of the second connecting terminal and the second signal source.