News Column

Researchers Submit Patent Application, "Metal Ceramic Chassis for Portable Devices", for Approval

May 27, 2014

By a News Reporter-Staff News Editor at Information Technology Newsweekly -- From Washington, D.C., VerticalNews journalists report that a patent application by the inventor Aurongzeb, Deeder M. (Round Rock, TX), filed on November 7, 2012, was made available online on May 15, 2014.

The patent's assignee is Dell Products L.P.

News editors obtained the following quote from the background information supplied by the inventors: "The present invention relates in general to the field of information handling system chassis, and more particularly to a metal ceramic chassis for portable devices.

"As the value and use of information continues to increase, individuals and businesses seek additional ways to process and store information. One option available to users is information handling systems. An information handling system generally processes, compiles, stores, and/or communicates information or data for business, personal, or other purposes thereby allowing users to take advantage of the value of the information. Because technology and information handling needs and requirements vary between different users or applications, information handling systems may also vary regarding what information is handled, how the information is handled, how much information is processed, stored, or communicated, and how quickly and efficiently the information may be processed, stored, or communicated. The variations in information handling systems allow for information handling systems to be general or configured for a specific user or specific use such as financial transaction processing, airline reservations, enterprise data storage, or global communications. In addition, information handling systems may include a variety of hardware and software components that may be configured to process, store, and communicate information and may include one or more computer systems, data storage systems, and networking systems.

"Information handling systems have tended over time to increase their processing and storage capabilities even while decreasing their footprint. For example, ultra-lightweight laptop and tablet information handling systems support many advanced functions in extremely portable chassis. One difficulty with such lightweight chassis is that structural elements of the chassis tend to have less strength and robustness due to the less-substantial size and thickness of material used to build the structural elements so that weight is decreased. For example, tablet information handling systems typically have touchscreen displays that accept inputs made as gestures at the touchscreen. Lightweight chassis for supporting touchscreens tend to have reduced rigidity so that touches cause oscillation at chassis structural elements. Plastic components offer light weight, but tend to lack the strength to stand up to normal use. Metal and carbon fiber components can interfere with wireless communications, often do not offer favorable aesthetics and tend to impact recyclability of a system. Yet, chassis structural elements that have too great of rigidity are at risk of rupture in the event of too great a deflection."

As a supplement to the background information on this patent application, VerticalNews correspondents also obtained the inventor's summary information for this patent application: "Therefore a need has arisen for a system and method which supports information handling system components in chassis with ceramic elements.

"In accordance with the present invention, a system and method are provided which substantially reduce the disadvantages and problems associated with previous methods and systems for supporting information handling system components in a chassis. Ceramic materials are used to build chassis elements that are assembled into an information handling system chassis. Various chassis elements used to assemble a chassis have various ceramic materials for providing desired color, transparency, ductility and hardness. For example, oxide and nitride ceramics heated in varying manners provide different ductility to support functions of different portions of an information handling system, such supporting inputs through a ceramic touchscreen or supporting processing components in a ceramic base. A chassis element may be formed with layers of different ceramic and metal materials to provide tailored structural and aesthetic characteristics. The metal base specifically important when the thickness of the base is

"More specifically, an information handling system processes information with a processor and memory disposed in a chassis assembled from ceramic chassis elements. In various embodiments, the chassis elements are built of various ceramic materials formed with various manufacture techniques to provide targeted material characteristics in support of information handling system functions. For instance, a display cover has a relatively rigid and transparent ceramic material to allow interaction by an end user with a touchscreen display through the ceramic material without introducing excessive oscillations. A ceramic bezel having a relatively high degree of ductility couples to a ceramic chassis base having a relatively low degree of ductility. In some alternative embodiments, multi-layer ceramic chassis elements have layers of ceramic materials and/or metal materials in which different layers have different levels of ductility. Ceramic chassis elements are formed from a ceramic mixture, such as a ceramic base of alumina, having a stiffener that makes the mixture suitable as an injection molding feedstock. Coupling devices are integrated in the ceramic material before sintering so that sintering causes densification of the ceramic material and coupling device into an integrated chassis element. Aesthetic appearance is provided by adding a dopant to the ceramic mixture or treating the ceramic after sintering. In order to provide a uniform appearance, metal chassis elements are coated with a ceramic and annealed to diffuse the ceramic material with the underlying metal material.

"The present invention provides a number of important technical advantages. One example of an important technical advantage is that an information handling system chassis is assembled from ceramic and other materials to provide tailored functionality with ceramic characteristics. For example, a tablet information handling system has a ceramic chassis element base that integrates ceramic coupling devices to secure processing components in a strong, durable and relatively rigid base. The tablet has a more ductile ceramic bezel holding the display to the base to provide greater flexibility in the event of end user impacts to the base. A transparent ceramic cover over the display adapts to accept end user inputs made to a touchscreen of the display. Ceramic materials and coatings provide light weight chassis elements to build a portable information handling system that has a tough exterior with a durable finish integrated with the ceramic material, such as with a dopant, micro arcing, or deposition of an overlying material.


"The present invention may be better understood, and its numerous objects, features and advantages made apparent to those skilled in the art by referencing the accompanying drawings. The use of the same reference number throughout the several figures designates a like or similar element.

"FIG. 1 depicts a blow-up view of a tablet information handling system disposed in a chassis having ceramic elements;

"FIG. 2 depicts a side perspective view of a tablet information handling system having a chassis with ceramic elements and an open cover;

"FIG. 3 depicts a side perspective view of a tablet information handling system having a chassis with ceramic elements and a closing cover;

"FIG. 4 depicts a flow diagram for a process of forming a ceramic chassis element;

"FIG. 5 depicts a ceramic chassis element having coupling devices to couple with information handling system components;

"FIG. 6 depicts a flow diagram of a process for integrating a coupling device with a ceramic chassis element;

"FIG. 7 depicts one embodiment of a multi-layered ceramic chassis element with one or more layers having different levels of ductility;

"FIG. 8 depicts a flow diagram of a process for forming a ceramic chassis element with deposition of ceramic material over a metal base;

"FIG. 9 depicts an example of motion imparted at a chassis element during micro arc deposition to provide a desired surface pattern;

"FIG. 10 depicts a functional block diagram of a process for coating a base metal with a dopant to form an oxide surface coating; and

"FIG. 11 depicts a ceramic plate for assembly into a mounting frame to make an information handling system chassis."

For additional information on this patent application, see: Aurongzeb, Deeder M. Metal Ceramic Chassis for Portable Devices. Filed November 7, 2012 and posted May 15, 2014. Patent URL:

Keywords for this news article include: Dell Products L.P., Information Technology, Information and Data Storage.

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Source: Information Technology Newsweekly

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