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US 2006/0037848 A1Published application
Key button structure and portable terminal device therewith
AssigneeNEC Corporation
InventorFumiyuki Kobayashi
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AssigneeNEC Corporation
InventorFumiyuki Kobayashi
Estimating the term…
The present invention provides a key button structure, capable of easily and positively finding a targeted character in accordance with an entry mode preset by a user, comprises: a key top; a light shielding section, which is attached onto rear face of the key top and of which is formed by reversely printing characters assigned to a key button for each character type display area; key backlights, each of which is provided in a dome anchoring sheet for covering a metal dome, and are arranged so as to be divided into three types: key backlights for lighting a numeral display area, a kana character display area, and an alphabetical letter display area respectively. For example, with a numeral entry mode preset, only the key backlight for lighting the numeral display area is lighted, thus displaying only a required numeral bright in the number entry mode.
A key button structure, serving as a key button structure for a portable terminal device in which a plurality of types of characters such as numerals, kana characters and alphabetical letters are respectively assigned to a key button, and comprising:
The key button structure for a portable terminal device in which a plurality of types of characters such as numerals, kana characters and alphabetical letters are respectively assigned to a key button, wherein the key button structure comprises:
A portable terminal device equipped with a key button structure in which a plurality of types of characters such as numerals, kana characters and alphabetical letters are respectively assigned to a key button, wherein the key button structure comprises:
Dependencies are inferred from the claim text.