Reflective Display Panel Using Electro-Optic Layers
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Solution Overview
Problem
Existing reflective displays rely on complex and costly switching transistors to control pixel units, leading to long production cycles and high costs.
Innovation Solution
A reflective display panel with electro-optic materials in a first and second electrode layer, where the orthogonal projections of these layers overlap to form pixel units, allowing control of the display state by adjusting driving voltages to achieve specific phase differences in reflected and refracted light, eliminating the need for switching transistors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If switching transistors are used to control pixel units in reflective displays, then the display can be controlled to show different images, but the device complexity and manufacturing cost increase
Solution Approach 1:
The patent replaces the mechanical/electronic switching transistor system with an optical control system. By applying voltages to electro-optic materials (first and second electrode layers), the refractive index changes, controlling light propagation paths to achieve display control without mechanical switching components.
Solution Approach 2:
The patent utilizes changes in the refractive index parameter of electro-optic materials in response to applied voltages. By dynamically adjusting voltage parameters, the system controls the phase and path of light to achieve different display states, eliminating the need for physical switching components.
2Adaptability or versatility
If switching transistors are used to control pixel units, then image display is achieved, but production cost and time increase
Solution Approach 1:
The patent eliminates complex transistor-based switching mechanisms and replaces them with simpler electro-optic material control. This substitution significantly simplifies the manufacturing process and reduces production cycle time while maintaining image display functionality.
Solution Approach 2:
The patent extracts and removes the switching transistor component from the display structure entirely. By eliminating this complex component and its associated manufacturing steps, the production cycle is shortened and costs are reduced, while core display functionality is preserved through optical control mechanisms.
3Ease of operation
If switching transistors are used in reflective displays, then pixel control is achieved, but manufacturing cost increases
Solution Approach 1:
The patent substitutes expensive transistor components with simpler electro-optic material layers. This replacement maintains pixel control capability while significantly reducing manufacturing costs, as electro-optic materials can be deposited using standard thin-film fabrication techniques without complex semiconductor processing.
Solution Approach 2:
The patent employs inexpensive electro-optic materials (such as liquid crystals or polymer materials) that can be easily deposited and replaced, eliminating the need for expensive, complex transistor components. These materials provide sufficient functionality at a fraction of the cost and complexity of traditional semiconductor switches.
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
Simplifies the structure and manufacturing process, reduces production costs, and enables efficient control of pixel units without transistors, resulting in a more cost-effective and faster production cycle.
Implementation Method 1
a first electrode layer on a side of the reflective layer distal to the base substrate, a material of the first electrode layer being an electro-optic material; and a second electrode layer on a side of the first electrode layer distal to the base substrate and insulated from the first electrode layer, a material of the second electrode layer being an electro-optic material
Implementation Method 2
reflected light having a first phase is generated after part of ambient light is reflected by a surface of the part of the second electrode layer corresponding to the pixel unit
Implementation Method 3
refracted light having a second phase is generated after part of ambient light is refracted into the reflective display panel at the surface of the part of the second electrode layer corresponding to the pixel unit, reflected by the reflective layer and refracted out from the surface of the part of the second electrode layer corresponding to the pixel unit
Data Source
AI summary
The present application discloses a reflective display panel, a driving method thereof, a control method of a pixel unit and a reflective display device. The reflective display panel comprises: a base substrate, a reflective layer, first and second electrode layers, wherein the first electrode layer is on a side of the reflective layer distal to the base substrate, the second electrode layer is on a side of the first electrode layer distal to the base substrate and insulated from the first electrode layer, materials of the first and second electrode layers are each an electro-optic material, and orthogonal projections of the second and first electrode layers on the base substrate have overlapping areas corresponding to the pixel units.