Method and apparatus for storing non-volatile display pixel data

A display pixel that has a memory function, comprising:

• a switching thin film transistor (TFT) configured to control whether the pixel is driven;
• a charge trapping TFT (CTTFT) configured to control a pixel driving current and perform a memory function;
• a first light-emitting light source configured to emit light through a current applied based on the CTTFT;
• and
• a second light-emitting light source configured to emit light to erase data based on the memory function of the CTTFT.

A method for storing and removing data in a display pixel that has a memory function, the method comprising:

• setting an applied voltage of a charge trapping TFT (CTTFT) that controls a pixel driving current and performs a memory function to an off-state;
• storing data based on a trapping layer of the CTTFT by setting a first data line using an applied voltage of a switching TFT that controls whether the pixel is driven to an on-state to set a gate line to an on-state;
• setting an applied voltage of a second light-emitting light source that emits light to an on-state in order to erase data;
• and
• erasing the data from the trapping layer of the CTTFT by setting the applied voltage of the CTTFT to an off-state and setting the first data line using the applied voltage of the switching TFT to an on-state to set the gate line to an on-state.