Abstract:
A method of manufacturing a co-molded housing component for an electronic device is disclosed. A component formed from a ceramic material is placed in a mold. The mold comprises a first section defining a first cavity configured to receive the first component, and a second section defining a second cavity that is in communication with the first cavity when the mold is closed. The second cavity is in the shape of a feature that is to be joined to the ceramic material. A polymer material is injected into the second cavity, thereby forming the feature from the polymer material and bonding the feature to the ceramic material. The polymer material is cured. The first component and the feature together form the housing component for an electronic device.
Abstract:
Systems and methods for forming a smooth matte surface of a ceramic component using a double abrasive blasting process. A surface region of a surface of the ceramic component may be blasted in a first abrasive blasting process, using, for example, a first abrasive media comprised of a first abrasive material having a hardness that is greater than that of the ceramic component. The surface may be blasted another time in a second abrasive blasting process, using, for example, a second abrasive media comprised of a second abrasive material coupled to an elastic element. In the second abrasive blasting process, the second abrasive material may be harder than the ceramic component.
Abstract:
A method of forming a ceramic component is disclosed. A ceramic matrix material is combined with a binder material. The ceramic matrix material and the binder material are mixed to create an intermediate slurry. After mixing the ceramic matrix material and the binder material, reinforcing fibers are added to the intermediate slurry to create a final slurry. The final slurry is introduced into a mold cavity having a shape corresponding to the ceramic component. The final slurry is at least partially cured within the mold cavity to form an intermediate casting. The intermediate casting is sintered to produce the ceramic component from the intermediate casting.
Abstract:
An electronic device includes one or more light emitters for emitting light toward an object and one or more light detectors for collecting light exiting the object. A reflective coating, surface, or surface finish can be applied adjacent to the area to which light is emitted and/or through which light exits in order to increase the light collected by the light detector. The reflective coating can be oriented so as to reflect light back into the object.
Abstract:
Methods for improved ceramics component casting. One such method may include vacuuming a ceramic-based slurry mixture and/or vacuuming a component mold. The vacuuming of the ceramic-based slurry mixture and the component mold may be to remove air bubbles from the respective elements. More specifically, the vacuuming may remove air bubbles from the ceramic-based slurry mixture and from a cavity of the component mold, respectively. The method may also include disposing the ceramic-based slurry mixture into the cavity of the component mold, and continuously vacuuming the cavity of the component mold including the ceramic-based slurry mixture for a predetermined time to remove any additional air bubbles included in the ceramic-based slurry mixture. Finally, the method may include forming a ceramic component within the continuously vacuumed cavity of the component mold over the duration of the predetermined time. The ceramic component formed from the ceramic-based slurry mixture.
Abstract:
An opaque cover is provided for a capacitive sensor. The cover includes a transparent substrate, and at least one white coating layer including white pigments disposed over at least one portion of the transparent substrate. The cover also includes a non-conductive minor structure disposed over the at least one white coating layer. The non-conductive minor structure includes a number of first dielectric layers having a first refractive index interleaved with second dielectric layers having a second refractive index. The first and second dielectric layers have dielectric constants below a threshold.