A rollable organic light emitting display system , comprising a roller , an organic light emitting diode layer between two substrates , wherein the two substrates are capable of being rolled on the roller or unrolled from the roller , the system comprising a protection film covering lateral surfaces of the substrates so as to prevent the lateral surfaces of the substrates from being damaged by an external impact when the two substrates are unrolled and the lateral surfaces of the two substrates are exposed to the external impact, the system further comprising: an encapsulation layer covering the organic light emitting diode layer , wherein the organic light emitting diode layer is disposed on a first substrate of the two substrates , wherein a second substrate of the two substrates is provided on the encapsulation layer , wherein the protection film includes: a first protecting portion attached to a lower surface of the first substrate and continuously extending between lateral ends of the first substrate in a direction parallel to a lengthwise direction of the roller ; and second protecting portions extending from respective ends of the first protecting portion in the direction parallel to the lengthwise direction of the roller along respective lateral surfaces of the first substrate which are not parallel to the lengthwise direction of the roller , and contacting respective lateral surfaces of the encapsulation layer which are not parallel to the lengthwise direction of the roller and respective lateral surfaces of the second substrate which are not parallel to the lengthwise direction of the roller , wherein each of the second protecting portions continuously extends between the respective lateral surfaces of the first substrate and the second substrate . an encapsulation layer covering the organic light emitting diode layer , wherein the organic light emitting diode layer is disposed on a first substrate of the two substrates , wherein a second substrate of the two substrates is provided on the encapsulation layer , wherein the protection film includes: a first protecting portion attached to a lower surface of the first substrate and continuously extending between lateral ends of the first substrate in a direction parallel to a lengthwise direction of the roller ; and second protecting portions extending from respective ends of the first protecting portion in the direction parallel to the lengthwise direction of the roller along respective lateral surfaces of the first substrate which are not parallel to the lengthwise direction of the roller , and contacting respective lateral surfaces of the encapsulation layer which are not parallel to the lengthwise direction of the roller and respective lateral surfaces of the second substrate which are not parallel to the lengthwise direction of the roller , wherein each of the second protecting portions continuously extends between the respective lateral surfaces of the first substrate and the second substrate . a first protecting portion attached to a lower surface of the first substrate and continuously extending between lateral ends of the first substrate in a direction parallel to a lengthwise direction of the roller ; and second protecting portions extending from respective ends of the first protecting portion in the direction parallel to the lengthwise direction of the roller along respective lateral surfaces of the first substrate which are not parallel to the lengthwise direction of the roller , and contacting respective lateral surfaces of the encapsulation layer which are not parallel to the lengthwise direction of the roller and respective lateral surfaces of the second substrate which are not parallel to the lengthwise direction of the roller , wherein each of the second protecting portions continuously extends between the respective lateral surfaces of the first substrate and the second substrate . <EOS>