Abstract: As it is often difficult for users of a keyboard to adequately identify and select the correct keys in a keyboard where the light is inadequate, it is desirable to provide a keyboard capable that allows a user to better see keys of the keyboard even in environments where there is not sufficient light to see the keys (e.g., in an airplane). A keyboard of the present invention comprises a substrate, a membrane, an elastic member, a cover sheet, a keytop, and light-emitting means for emitting light from the bottom of the substrate to the keytop. The keytop is illuminated and a legend on a key surface can be seen, so that the chance of incorrect key stroke is reduced.

Abstract: As it is often difficult for users of a keyboard to adequately identify and select the correct keys in a keyboard where the light is inadequate, it is desirable to provide a keyboard capable that allows a user to better see keys of the keyboard even in environments where there is not sufficient light to see the keys (e.g., in an airplane). A keyboard of the present invention comprises a substrate, a membrane, an elastic member, a cover sheet, a keytop, and light-emitting means for emitting light from the bottom of the substrate to the keytop. The keytop is illuminated and a legend on a key surface can be seen, so that the chance of incorrect key stroke is reduced.