Display device and method of driving the same
A display device includes pixels connected to scan lines and data lines, each pixel including a driving transistor and at least one light emitting element, and a timing controller configured to generate output data using external input data. The timing controller includes a first compensator configured generate first data by correcting the external input data using at least one of optical measurement information, a threshold voltage of each of the driving transistors, mobility information, dimming information, and temperature information, and an afterimage compensator configured to generate second data based on age information of each light emitting element and the first data, generate third data based on a current amount corresponding to the first data and a current amount corresponding to the second data, and generate the age information by accumulating the third data.
1 . An electronic device, comprising:
a display panel comprising pixels positioned to be connected to scan lines and data lines and including a driving transistor and at least one light emitting element; and
a processor configured to generate output data using input data and control the display panel;
wherein the processor is configured to:
correct input data using at least one of optical measurement information, a threshold voltage of each of the driving transistors, mobility information, dimming information, and temperature information to generate first data; and
generate second data by reflecting age information of the light emitting element to the first data, generate third data by reflecting a current amount corresponding to the first data and a current amount corresponding to the second data, and generate the age information by accumulating the third data.
2 . The electronic device according to claim 1 , further comprising:
a current sensor configured to generate a global current value by measuring a current of a first power line commonly connected to the pixels, and
wherein the processor is configured to generate a scale factor by reflecting the global current value and a load of the input data.
3 . The electronic device according to claim 2 , wherein the processor is further configured to generate the output data by reflecting the scale factor to the second data.
4 . The electronic device according to claim 1 , wherein the processor is further configured to:
generate the second data by reflecting the age information to the first data;
generate a compensation scale factor by reflecting an initial current amount corresponding to the first data and a compensation current amount corresponding to the second data;
generate the third data by reflecting the compensation scale factor to the second data; and
accumulate the third data as the age information.
5 . The electronic device according to claim 4 , wherein the processor is further configured to generate the compensation scale factor by dividing the initial current amount by the compensation current amount.
6 . The electronic device according to claim 4 , wherein the processor is further configured to generate the third data by multiplying the compensation scale factor by the second data.
7 . The electronic device according to claim 4 , wherein the processor is further configured to calculate the compensation current amount using the age information and the first data.
8 . The electronic device according to claim 4 , wherein processor is further configured to calculate the compensation current amount using the second data input from the data changer.
9 . The electronic device according to claim 1 , wherein the display panel including the pixels is divided into a plurality of blocks including at least two or more pixels, and
wherein processor is further configured to accumulate the age information in units of the block.
10 . The electronic device according to claim 9 , further comprising:
an age accumulator configured to accumulate the third data as the age information,
wherein the processor is further configured to:
determine a position of the first data corresponding to the blocks to generate position information;
generate the second data by reflecting the block unit age information to the first data;
generate a representative value of the second data in units of the block;
generate a block compensation scale factor by reflecting an initial current amount corresponding to the first data and a compensation current amount corresponding to the second data in units of the block; and
generate the third data by reflecting the block compensation scale factor to the representative value.
11 . The electronic device according to claim 10 , wherein the processor is further configured to generate the representative value by averaging the second data in units of the block.
12 . The electronic device according to claim 10 , wherein the processor is further configured to generate the block compensation scale factor using a ratio of the initial current amount and the compensation current amount in units of the block.
13 . The electronic device according to claim 10 , wherein the processor is further configured to calculate the compensation current amount using the block unit age information and the first data.
14 . The electronic device according to claim 10 , wherein the processor is further configured to calculate the compensation current amount in units of the block using the second data input from the data changer.