Title:
PORTABLE COMMUNICATION TERMINAL DEVICE
Document Type and Number:
Japanese Patent JP3935679
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a cellular phone for allowing information such as the function display or the like of each operation key to be seen easily even in a dark environment.
SOLUTION: The cellular phone comprises a key input device 14 consisting of a plurality of operation keys, a light-applying device 18 for applying light onto the surface of the plurality of operation keys, and a control circuit 10. The pattern of a fluorescent film for indicating the function of each operation key is formed on each surface of the plurality of operation keys, and the control circuit 10 lights the light-applying device 18 for fixed time periodically.
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Inventors:
Keiomi Kashu
Shuji Otsuka
Hideji Kawasaki
Shuji Otsuka
Hideji Kawasaki
Application Number:
JP2001031201A
Publication Date:
June 27, 2007
Filing Date:
February 07, 2001
Export Citation:
Assignee:
Sanyo Electric Co., Ltd.
International Classes:
H04M1/23; H04M1/02; H04M1/22; H04M1/725; (IPC1-7): H04M1/23; H04M1/22; H04M1/725
Domestic Patent References:
| JP11194875A | ||||
| JP5314855A | ||||
| JP2000052635A | ||||
| JP2000057876A | ||||
| JP2000165490A | ||||
| JP2001332151A | ||||
| JP10144478A | ||||
| JP2002057776A | ||||
| JP2002111836A |
Attorney, Agent or Firm:
Nobuyasu Nishioka