BCD to 7-segment decoder with oxide thin film transistors.

Binary coded decimal (BCD) to 7-segment decoder with oxide thin film transistors (TFTs) was implemented on a glass to display 7-segment display from BCD. The developed BCD to the 7-segment decoder with indium-gallium-zinc oxide thin film transistors was verified up to 1 kHz operation frequency under the power supply voltage of 5 V, and converted successfully 4-bit binary input code to 7-segment inputs. The binary output voltages were 0.4 V for the low and 4.1 V for the high at an operation frequency of 500 Hz, respectively. The output signals of the developed 7-segment decoder matched well the BCD to the decimal values. The result showed that oxide TFT can be used for the integrated BCD to 7-segment decoder for the various sensing applications, particularly for wearable devices and the integrated bio sensing platform. [ABSTRACT FROM AUTHOR]