A control device is provided. A key structure of the control device includes a keycap, an optical film layer and a membrane switch. A protrusion structure is formed on the optical film layer or the membrane switch. When the keycap is pressed down by the user, the arrangement of the protrusion structure can facilitate the user to trigger the underlying membrane switch more precisely.

A keycap includes a keycap body with a top surface and a top periphery region extending around the top surface. A recessed area extends across the top surface inward of the top periphery region, with the top periphery region being elevated relative to the recessed area. The keycap also includes a set of grooves extending from the recessed area and across at least a portion of the top periphery region.

Particular embodiments described herein provide a display that includes a mask that includes a one or more exposed areas, a top electrode, one or more bottom electrodes, a dielectric between the top electrode and the one or more bottom electrodes, and an electrical connection to create a differential voltage between the top electrode and the one or more bottom electrodes.

A keycap includes a keycap body with a top surface and a top periphery region extending around the top surface. A recessed area extends across the top surface inward of the top periphery region, with the top periphery region being elevated relative to the recessed area. The keycap also includes a set of grooves extending from the recessed area and across at least a portion of the top periphery region.

A button includes a display element including a mounting section, a hollowed bottom board having a joint section, support frame members having an interconnection driving section, a button cap body having a light-transmitting section and a contacting section, and an elastic element. The support frame members and the elastic element are arranged on the contacting section located outside the button cap body to that a user is allowed to see, by way of the light-transmitting section of the button cap body, through the hollowed bottom board to the display element at the bottom so as to completely observe a text/pattern section of the display element. In a pressing-down operation, the interconnection driving section makes the support frame members to operate with leverage for causing the elastic element to drive the display element. Further, individual button modularization can be achieved with the arrangement of the mounting section and the joint section.

An embodiment for a computing device is described herein. The computing device may include a word database enhancer, a recommendation engine, a keyboard monitor, a ranking and display manager, and a keyboard. The keyboard may be a configurable physical keyboard device that includes an embedded display, where the embedded display is a runtime configurable display. The keyboard may display configurable images in the form of auto-text completion text or a decrypted password. The keyboard may also include a microcontroller, a touch sensor, and a keyboard filter driver.

Particular embodiments described herein provide for a keycap. The keycap can include a protective layer and an active element, where the height of protective layer and the active element is less than six (6) millimeters in height. The keycap can also include a front plane layer, a back plane layer, where the front plane layer and the back plane layer comprise the active element, and an electrical connection through the keycap to provide electrical communication with the active element.

A keyboard device includes a key switch, a base plate, a connecting element and a replaceable key. The replaceable key includes a coupling plate and a keycap. The connecting element is connected between the coupling plate and the base plate. The coupling plate includes a first sliding part. The keycap includes a second sliding part. When the second sliding part is slid relative to the first sliding part, the keycap is combined with the coupling plate or the keycap is detached from the coupling plate. Consequently, the keycap is easily assembled or disassembled. Moreover, since the connecting element is not touched during the process of disassembling the keycap, the connecting element is not damaged.

A control device includes a button assembly having one or more buttons and a button carrier that includes a plurality of resilient, independently deflectable spring arms. The control device may be configured as a wall-mounted keypad to control a load control device, or as a thermostat to control a temperature regulation appliance. The button carrier may be configured to prevent interference between the buttons during operation of the control device. The button assembly may be captured between a faceplate of the control device and a housing that is attached to a rear side of the faceplate. The control device may include one or more button retainers that are attached to the buttons and that are configured to align respective outer surfaces of the buttons relative to each other, and relative to the faceplate of the control device, when the buttons are in respective rest positions.

A control device includes a button assembly having one or more buttons and a button carrier that includes a plurality of resilient, independently deflectable spring arms. The control device may be configured as a wall-mounted keypad to control a load control device, or as a thermostat to control a temperature regulation appliance. The button carrier may be configured to prevent interference between the buttons during operation of the control device. The button assembly may be captured between a faceplate of the control device and a housing that is attached to a rear side of the faceplate. The control device may include one or more button retainers that are attached to the buttons and that are configured to align respective outer surfaces of the buttons relative to each other, and relative to the faceplate of the control device, when the buttons are in respective rest positions.