The correction voltage selection output device of the liquid crystal display device

摘要

according to the invention is a liquid crystal display of the voltage on the selected output device, in particular, the output of the analog switch of the relay is in line with the number of the chip area can be reduced uc7a5uce58uc758 lcd display to select the voltage on the output device. a liquid crystal display, in the past, in order to drive the device 11 to the output of the voltage to be input to the voltage and the number of step 4, an output in order to transfer the gate 4 is necessary.thus, the correction voltage output 11 of the transistor in order to 512 is composed of communication is the need to expand the area of the chip, so there was a problem, but the research on it is the input voltage (Von, Voff, Vp... the Vm) the signal level of the occurrence of a device (200), and the correction voltage (Von, Voff, Vp, Vm) of the output control voltage (Vp, Vm) is selected, the output switching part (210), and the switching control part (210) the switching control part (220), and the rest of the device (200) to the level of output to input to accept the correction voltage (Von, Voff, Vp, Vm) is selected, the output (OU1, OUT 2.OUT 128), the analog switch part (240) of the output voltage, the control voltage to the output, in order to have a choice, an analog switch of the device is to have a power of 3 is necessary for ud558uac8c, chip area can do so the effect can be.