| 摘要 |
A display device, such as a liquid crystal display, can be integrated into each key of a keyboard, numeric keypad, or other keyed input device. The display device can display a symbol when it is active. For example, a "1" when pressing that key will input a "1" and a "!" when that key input a "!." In addition to a display device, each key top can include a key cap, generally made of a transparent plastic so that the display can be seen. The key cap can be formed in the shape of a key and will generally be the portion of the input device that a user presses on to input information. A plurality of key caps can be combined to form a keyboard, numeric keypad, or other keyed input device. Throughout the rest of this application the term keyboard will generally be used in place of keyboard, numeric keypad, or other keyed device. In another embodiment a display device can be overlaid with a key cap skin to form a keyed input device, such as a keyboard. The display device can be a touch sensitive screen. Each key on the key cap skin can be pressed to input information displayed on the touch sensitive screen below. The key cap skin provides keys that are tactilely discernible without activating the keys. Individual keys can be located and distinguished from adjacent keys by touch. |
