Tft Lcd Driver Circuit

In this thesis we focus on the driver circuits design for tft lcd display and the possibility of high slew rate high resolution low offset voltage and low power consumption is discussed.

Tft lcd driver circuit.

Tft lcd driver ic design chih wen lu national chi nan university taiwan r o c. Introduction with the rapid evolution of liquid crystal display lcd television tv there is a large demand for developing high resolution high co lor depth driver integrated circuits ics 1 3. Driver circuit for tft lcd. The driver circuit includes three power supply voltages vdd1 vdd2 vss and a number of cmos circuits formed on an insulating substrate.

Lu and kuo jen hsu journal analog integrated circuits and signal processing year 2011 volume 66 pages 19 29. Each cmos circuit contains at least one p channel tft between the supply voltage vdd2 and an output terminal and one n channel tft with two gate electrodes which is connected between the output terminal and the supply voltage vss where vdd2 vdd1 vss. To minimize the effect of the a si tft current and lc s capacitance variation with temperature we developed a new a si tft circuit structure and minimized coupling capacitance by changing vertical architecture above gate driver circuit. We developed an a si tft lcd panel with integrated gate driver circuit using a standard 5 mask process.

In addition the power consumption of a 12 stage gate driver circuit is 3 25 and 7 21 mw while operating at 2 d and 3 d modes respectively. The ili9341 tft display board which is shown in the circuit diagram above has 14 pins the first 9 pins are for the display and the other 5 pins are for the touch module. The driver circuits of lcd are composed of two parts the gate driver and the data driver. Based on a real circuit integrated on glass with a standard five mask process applied to a large sized fhd tft lcd panel the layout area of each gate driver circuit is 359 25 μm 2296 25 μm.

A tft lcd source driver ic with charge recycling technique article lu2011ats title a tft lcd source driver ic with charge recycling technique author c. Measurement results indicate that better frequency response with reduced capacitive coupling effect by which driving speed of the gate driver circuit is improved. Lin and chun da tu and chia en wu and chia che hung and k. Low power gate driver circuit for tft lcd application article lin2012lowpowergd title low power gate driver circuit for tft lcd application author c.

Gan and kuan wen chou journal ieee transactions on electron devices year 2012 volume 59 pages 1410 1415. Hardware circuit diagram of the example is shown below. The output voltage of proposed gate driver circuit can be estimated as 40v by using cadence microwind simulators.