저전력/고집적 소스 드라이버 및 그를 구비한 전류형 능동 구동 유기 EL 장치
양일석, 김종대, 노태문, 김병두, 권성구, 박일용, 유병곤, 이대우
- 7391393 (2008.06.24)
- Disclosed is a low power and high density source driver and a current driven active matrix organic electroluminescent device having the same, in which all elements operate at a normal voltage and all circuits of the source driver are shielded from a high voltage of a panel. The source driver includes: a shift register for generating an enable signal for storing data; a data latch circuit for storing digital data inputted from an exterior; a line latch circuit for sequentially storing the data in response to the enable signal and outputting the stored data in parallel at one time in response to a load signal; a current type digital-to-analog converter for converting the digital data outputted from the line latch circuit into an analog signal, the analog signal being outputted in a form of a current signal; and a high voltage shield circuit for transferring the output of the current digital-to-analog converter to source lines of an external panel and for shielding internal circuits from a high voltage of the panel. The shift register, the data latch circuit, the line latch circuit, the current type digital-to-analog converter and the high voltage shield circuit are driven at a normal voltage.
- KSP 제안 키워드
- Analog Converter, Analog signal, Current driven, Digital data, Digital to Analog Converter, Electroluminescent device, High Voltage, High-density, Latch circuit, Low-Power, Organic electroluminescent device, Shift Register, active matrix, current signal, digital-to-analog(DAC)