Unlock instant, AI-driven research and patent intelligence for your innovation.

Encapsulation Coatings for Reduced Particle Shedding

A coating and polymer coating technology, applied in the manufacture/assembly of piezoelectric/electrostrictive devices, circuits, piezoelectric/electrostrictive/magnetostrictive devices, etc., can solve the problem that PZT components are not coated , PZT components are difficult to mechanically control and other issues

Inactive Publication Date: 2014-10-29
MORGAN ADVANCED CERAMICS
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, each of these methods has disadvantages, and the PZT element on the suspension is generally left uncoated
For example, coating materials such as siloxane can render the PZT element mechanically difficult to manipulate, making its assembly into disk drives a challenge

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Encapsulation Coatings for Reduced Particle Shedding
  • Encapsulation Coatings for Reduced Particle Shedding
  • Encapsulation Coatings for Reduced Particle Shedding

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0043] It is an object of embodiments of the present invention to reduce particle shedding from ceramic components by applying coatings to capture and contain particles that would otherwise be trapped in particle-sensitive environments (e.g., inside hard drive housings, in living substrates application, or any other suitable application). Examples of ceramic components include, but are not limited to, piezoelectric materials, PZT materials, or any other brittle or brittle materials that may be subject to particle shedding. The coating is applied by precise application methods, such as by using inkjet technology which applies the coating directly onto the desired exposed surfaces of the component, and only to those areas where the coating is desired. Other methods include the use of photolithographic methods, which apply the coating to the entire ceramic component and remove the coating from surfaces in the final product that do not require coating. The areas finally to be coa...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

Various embodiments of the present invention relate to an encapsulated ceramic element coated with polymer material applied precisely to the element edges that are exposed during dicing. Methods of applying the polymer, as well as specific polymers that are particularly useful are disclosed. For example, the polymer material may be applied using precise application methods such as ink-jet printing to direct-write the material precisely where specifically desired. Another method described in the use of photolithographic methods. Additionally, the inventors have identified polyimide as a particularly useful polymer material in connection with certain aspects.

Description

technical field [0001] The present invention relates generally to the fields of encapsulation and coatings. In one particular embodiment, certain aspects of the present invention are useful as coatings for ceramics, and in a more specific embodiment, as coatings for ceramics used in hard disk drives. It has been documented that when a hard disk drive is operating, particles from the ceramic can break away from the bulk substrate and become mobile inside the disk housing, possibly causing the drive to miss reads or disrupting reader fly-offs ( fly-height). Embodiments of the present invention help suppress those particles. Other aspects of the invention relate to methods for applying the desired coating. Background technique [0002] Keeping parts and assemblies clean is a major challenge in the disk drive industry. One challenge that has been found is that most disk drive parts are prepared by conventional manufacturing methods that often result in particles that loosen ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H01L41/053H01L41/23H01L41/338C04B41/00C04B41/90C04B41/52H10N30/88H10N30/01H10N30/02H10N30/088H10N30/50H10N30/853
CPCH01L41/23H01L41/338C04B41/90C04B41/52C04B41/009H01L41/0533C04B2111/00844H10N30/883H10N30/02H10N30/088C04B41/51C04B41/4574C04B41/488C04B35/00C04B35/491
Inventor 穆罕默德·哈桑纳利卡尔·萨鲁波史蒂夫·克弗林弗雷德·M·金奥克
Owner MORGAN ADVANCED CERAMICS