Amazon Technologies, Inc.

Gabriel Isaiah Rowe

Robert Waverly Zehner

Michael M Lee

Lakshman Rathnam

Nikolai Orlov

A two layer touch panel structure utilizes direct-bonded touch panel and liquid crystal display (LCD) stackups for devices like tablets and computers. The top surface of a color filter and a receive conducting layer are placed close to the surface of the stackup. Placing a layer of conductive material on top of the color filter, on top of the polarizer, or on the cover glass can enable the process to be greatly simplified and cheaper than conventional processes, while maintaining excellent electrical and touch performance, and reducing ITO pattern visibility. Such a process also can utilize a large color filter, enabling significantly more pieces to be formed from a single stack and thus further improving efficiency and cost.

Touch panel assemblies and methods of manufacture

Various embodiments provide a capacitive touch input element that is formed of a recess in a substrate. The size and shape of the recess are chosen such that a finger of a user will not contact the bottom or minima point of the recess, thereby, requiring pressure to be applied by the finger in order to make contact. Beneath the substrate is a capacitive sensing electrode designed to concentrate an electric field toward the minima point of the recess such that the finger must make contact with the minima point to effect a change in capacitance causing the capacitive touch element to provide input to an appropriate application.

Capacitive touch with tactile feedback

The ability to effect a change in capacitance is not limited to one side of a capacitive touch element. Objects on an opposite side, or approaching from the opposite side, of a touch element can distort the electrostatic field. In some instances, overall device thickness can be such that the presence of a user's fingers on the back of a portable computing device (e.g., when holding the device) can be sensed by the capacitive touch screen on the front of the device. In various embodiments, a metallic plain, shield, or other conductive layer is provided for devices such as, smartphones, tablet computers, and other computing devices to eliminate, or at least reduce, any potential measurable change in capacitance caused by objects behind the touch panel.

Shielding capacitive touch display

A touch screen on a user device is used to measure the weight of one or more objects on a measurement device that is placed on the touch screen. The measurement device may include a plurality of styluses. The user device receives pressure data indicating the amount of pressure or force caused by the measurement device and one or more objects and calculates a weight based on the pressure data. The pressure data may be received from one or more of the measurement device or from the touch screen.

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Fremont, CA, United States of America

Gabriel Isaiah Rowe