Display device and electronic device having neural network for calculating set values of luminance and color tone

A display system comprising:

• a host device;
• a display portion;
• and
• an image processing portion comprising a processing circuit,
• wherein the host device is configured to perform a supervised learning based on learning data and teacher data by using a neural network on software,
• wherein the host device is configured to generate a plurality of weight coefficients based on the supervised learning and to input the plurality of the weight coefficients to the processing circuit,
• wherein the processing circuit is configured to perform an arithmetic operation using a neural network on hardware and to generate output data based on input data and the plurality of the weight coefficients,
• wherein the number of layers of the neural network of the processing circuit is equivalent to the number of layers of the neural network of the software,
• wherein each of the learning data and the input data comprises data of an illuminance of external light,
• wherein the teacher data comprises a first set value corresponding to a first luminance and a first color tone,
• wherein the output data comprises a second set value corresponding to a second luminance and a second color tone,
• wherein the processing circuit comprises a first memory cell, a second memory cell, and an offset circuit,
• wherein the first memory cell is configured to output a first current corresponding to a first analog data stored in the first memory cell,
• wherein the second memory cell is configured to output a second current corresponding to a reference analog data stored in the second memory cell,
• wherein the offset circuit is configured to output a third current corresponding to a differential current between the first current and the second current,
• wherein the first memory cell is configured to output a fourth current corresponding to the first analog data stored in the first memory cell when a second analog data is supplied as a selection signal,
• wherein the second memory cell is configured to output a fifth current corresponding to the reference analog data stored in the second memory cell when the second analog data is supplied as the selection signal,
• wherein the processing circuit is configured to obtain a sixth current corresponding to a differential current between the fourth current and the fifth current and to output a seventh current depending on a sum of products of the first analog data and the second analog data, and
• wherein the first analog data is a data corresponding to a first weight coefficient of the plurality of the weight coefficients.