An OLED panel, comprising a plurality of sub-pixels arranged in an array and configured to display an image and a plurality of light emitting units configured to serve as a light source for optical fingerprint identification, wherein the OLED panel is further provided with an optical fingerprint identification area , the optical fingerprint identification area comprises at least part of the sub-pixels and at least part of the light source , and at least one of the light emitting units is located between adjacent sub-pixels of the sub-pixels , wherein the light emitting unit comprises a first microcavity structure, and the first microcavity structure comprises: a first electrode ; a second electrode ; and a first light emitting layer between the first electrode and the second electrode , wherein the sub-pixel comprises a second microcavity structure, and the second microcavity structure comprises: a third electrode ; a fourth electrode ; and a second light emitting layer between the third electrode and the fourth electrode , wherein the first electrode and the third electrode are transflective electrodes, and the second electrode and the fourth electrode are reflective electrodes, wherein a thickness of the first electrode is greater than a thickness of the third electrode , and a thickness of the first microcavity structure is greater than a thickness of the second microcavity structure. wherein the OLED panel is further provided with an optical fingerprint identification area , the optical fingerprint identification area comprises at least part of the sub-pixels and at least part of the light source , and at least one of the light emitting units is located between adjacent sub-pixels of the sub-pixels , wherein the light emitting unit comprises a first microcavity structure, and the first microcavity structure comprises: a first electrode ; a second electrode ; and a first light emitting layer between the first electrode and the second electrode , wherein the sub-pixel comprises a second microcavity structure, and the second microcavity structure comprises: a third electrode ; a fourth electrode ; and a second light emitting layer between the third electrode and the fourth electrode , wherein the first electrode and the third electrode are transflective electrodes, and the second electrode and the fourth electrode are reflective electrodes, wherein a thickness of the first electrode is greater than a thickness of the third electrode , and a thickness of the first microcavity structure is greater than a thickness of the second microcavity structure. a first electrode ; a second electrode ; and a first light emitting layer between the first electrode and the second electrode , wherein the sub-pixel comprises a second microcavity structure, and the second microcavity structure comprises: a third electrode ; a fourth electrode ; and a second light emitting layer between the third electrode and the fourth electrode , wherein the first electrode and the third electrode are transflective electrodes, and the second electrode and the fourth electrode are reflective electrodes, wherein a thickness of the first electrode is greater than a thickness of the third electrode , and a thickness of the first microcavity structure is greater than a thickness of the second microcavity structure. a third electrode ; a fourth electrode ; and a second light emitting layer between the third electrode and the fourth electrode , wherein the first electrode and the third electrode are transflective electrodes, and the second electrode and the fourth electrode are reflective electrodes, wherein a thickness of the first electrode is greater than a thickness of the third electrode , and a thickness of the first microcavity structure is greater than a thickness of the second microcavity structure. <EOS>