Denso Corp., one of the world¡¯s top automotive semiconductor manufacturers and a key supplier to Toyota Motor Corp., may consider spinning off its chip business, which generates around ?420 billion ($3.1 billion) in sales, the company¡¯s chief technology officer said Friday.

Well known as the world¡¯s second-biggest auto-parts-maker, Denso has also quietly built up a presence in automotive chips. Now, with semiconductor-related capital expenditures totaling around ?160 billion over the past three years, Denso ranks as the world¡¯s fifth-largest supplier of automotive chips by sales.

¡°We need to think about whether the time will come when we sell semiconductors, alone, externally,¡± CTO Yoshifumi Kato said in an interview at Denso¡¯s headquarters in Aichi Prefecture. ¡°It¡¯s worth looking into whether that kind of structure is possible.¡±