发明名称 Electronic device having pixels displaying an image and pixels displaying an operation key
摘要 An easy to use electronic device is provided. The electronic device functions as a telephone and has a display portion, an audio input portion, an audio output portion, and operation keys. The display portion has a passive element, and the operation keys have LEDs. The direction of an image displayed by the LEDs is switchable.
申请公布号 US8155305(B2) 申请公布日期 2012.04.10
申请号 US20090367918 申请日期 2009.02.09
申请人 YAMAZAKI SHUNPEI;KOYAMA JUN;YAMAZAKI YU;SEMICONDUCTOR ENERGY LABORATORY CO., LTD. 发明人 YAMAZAKI SHUNPEI;KOYAMA JUN;YAMAZAKI YU
分类号 H04M1/00;G06F3/02;G09G3/32;G09G3/36;G09G5/00;H04M1/02;H04M1/725 主分类号 H04M1/00
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