Changeable Liquid Prism Array Electrode Segmentation
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Solution Overview
Problem
The complexity of manufacturing electrodes for changeable liquid prism arrays using electrowetting technology makes it difficult to produce these arrays effectively, as the process of separating electrodes is intricate and challenging.
Innovation Solution
A changeable liquid prism array design featuring a substrate with a wiring layer, barrier walls, and side electrodes, where the wiring layer includes conducting and non-conducting wire portions, and a method of manufacturing that involves depositing a metal layer, patterning, forming barrier walls, and using back exposure to create side electrodes, simplifying the process and reducing manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If electrodes are separated to enable electrowetting operation, then the device can change liquid interface shape, but the manufacturing process becomes complex and difficult
Solution Approach 1:
The electrode structure is segmented into distinct components: a bottom electrode layer formed on the substrate, and side electrodes formed on the barrier walls. This segmentation allows each electrode component to be manufactured independently using standardized semiconductor processes, simplifying the overall manufacturing while maintaining the functional separation needed for electrowetting operation.
Solution Approach 2:
The electrode arrangement transitions from a planar separation approach to a three-dimensional configuration where side electrodes are positioned vertically on barrier walls. This dimensional change enables electrode separation in the vertical dimension rather than requiring complex lateral separation, thereby simplifying the manufacturing process while preserving electrowetting functionality.
2Reliability
If a complex electrode separation process is used, then electrowetting function is achieved, but manufacturing cost and complexity increase
Solution Approach 1:
The electrode formation process is merged with the barrier wall formation process. The side electrodes are formed on the barrier walls in the same manufacturing sequence, combining two functions into a unified process flow. This merging reduces the number of separate manufacturing steps and simplifies the overall device fabrication while maintaining proper electrode separation for electrowetting operation.
Solution Approach 2:
The barrier walls serve multiple functions: they provide structural support for the liquid columns, define cell boundaries, and serve as substrates for forming side electrodes. This multi-functionality reduces the need for separate components and simplifies the manufacturing process while ensuring proper electrode separation for electrowetting functionality.
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 design and manufacturing method simplify the production of changeable liquid prism arrays, reducing complexity and costs while enabling efficient formation of side electrodes, allowing for the creation of arrays that can change the interface between liquids to form a prism shape for applications like stereoscopic image displays and optical analysis.
Implementation Method 1
A voltage is applied to control a surface tension of the conductive liquid so that a contact angle of the conductive liquid and an interfacial shape between the two liquids are changed
Implementation Method 2
A voltage is applied to control a surface tension of the conductive liquid so that a contact angle of the conductive liquid and an interfacial shape between the two liquids are changed
Implementation Method 3
A dielectric layer may be formed on the side electrodes, the dielectric layer including a hydrophobic material
Data Source
AI summary
A changeable liquid prism array and a method of manufacturing the changeable liquid prism array are provided. The changeable liquid prism array includes a substrate, a wiring layer formed on the substrate, and including conducting wire portions and non-conducting wire portions where the conducting wire portions are not formed, and barrier walls disposed on the wiring layer. The changeable liquid prism array further includes cells defined by the barrier walls, a first liquid included in the cells, and a second liquid located on the first liquid. The changeable liquid prism array further includes side electrodes disposed on side surfaces of the barrier walls, and separated from each other by spaces corresponding to the non-conducting wire portions, and an upper electrode arranged above the barrier walls, and separated from the side electrodes.