Sensing driving circuit and display device including the same

A sensing driving circuit for a display device, comprising:

• a plurality of stages configured to respectively output a plurality of sensing signals and including a (K)th stage and a (K+1)th stage, the (K)th stage comprising:
• a shift register configured to provide a (K)th carry signal to the (K+1)th stage;
• and
• a masking buffer configured to output a (K)th sensing signal,
• wherein the masking buffer includes:
• a first input circuit configured to provide i) an input signal to a first node based on a node driving signal and ii) a first power voltage to a second node based on the input signal and the node driving signal;
• a node masking circuit configured to supply the first power voltage to the first node and a second power voltage to the second node based on a masking signal;
• a sensing pull-up circuit configured to pull up the (K)th sensing signal based on a second node signal of the second node;
• and
• a sensing pull-down circuit configured to pull down the (K)th sensing signal based on a first node signal of the first node, where K is an integer greater than 0,
• wherein the node masking circuit includes:
• a first masking transistor including a gate electrode configured to receive the masking signal, a first electrode configured to receive the first power voltage, and a second electrode electrically connected to the first node;
• and
• a second masking transistor including a gate electrode configured to receive the masking signal, a first electrode configured to receive a second power voltage, and a second electrode electrically connected to the second node.

A display device comprising:

• a display panel including a plurality of scan lines, a plurality of sensing lines, a plurality of data lines, and a plurality of pixels;
• a data driving circuit configured to output a plurality of data signals respectively to the data lines;
• a scan driving circuit configured to output a plurality of scan signals respectively to the scan lines;
• a sensing driving circuit including a plurality of stages each configured to output at least one of a plurality of sensing signals to at least one of the sensing lines so as to measure a change in at least one characteristic of the pixels, wherein the stages include a (K)th stage and a (K+1)th stage;
• and
• a controller configured to control the data driving circuit, the scan driving circuit, and the sensing driving circuit,
• wherein the (K)th stage includes:
• a shift register configured to provide a (K)th carry signal to the (K+1)th stage;
• and
• a masking buffer configured to output a (K)th sensing signal, and
• wherein the masking buffer includes:
• a first input circuit configured to provide i) an input signal to a first node based on a node driving signal and ii) a first power voltage to a second node based on the input signal and the node driving signal;
• a node masking circuit configured to supply the first power voltage to the first node based on a masking signal, and to supply a second power voltage to the second node based on the masking signal;
• a sensing pull-up circuit configured to pull up the (K)th sensing signal based on a second node signal of the second node;
• and
• a sensing pull-down circuit configured to pull down the (K)th sensing signal based on a first node signal of the first node, where K is an integer greater than 0.