Pixel structure and repairing method thereof

1. A pixel structure comprising:

a substrate;

an active device layer disposed on the substrate;

a first insulating layer disposed on the active device layer;

a first light emitting element disposed on the first insulating layer, the first light emitting element comprising a first semiconductor layer, a second semiconductor layer, a first electrode electrically connected to the first semiconductor layer, and a second electrode electrically connected to the second semiconductor layer;

a second light emitting element disposed on the first insulating layer, the second light emitting element comprising a third semiconductor layer, a fourth semiconductor layer, a third electrode electrically connected to the third semiconductor layer, and a fourth electrode electrically connected to the fourth semiconductor layer;

a plurality of first signal lines disposed on the first insulating layer, the first signal lines being electrically connected to the active device layer, and the first signal lines being electrically insulated from the first electrode of the first light emitting element; and

a plurality of second signal lines electrically connected to the first signal lines and the third electrode of the second light emitting element,

wherein the second light emitting element overlaps with a portion of the first light emitting element in a first direction, and the first electrode, the second electrode, the third electrode, and the fourth electrode are disposed facing the first direction.

2. The pixel structure according to claim 1 , further comprising a third light emitting element disposed on the first insulating layer, the third light emitting element comprising a fifth semiconductor layer, a sixth semiconductor layer, a fifth electrode electrically connected to the fifth semiconductor layer, and a sixth electrode electrically connected to the sixth semiconductor layer,

wherein the first signal lines are electrically connected to the fifth electrode of the third light emitting element,

wherein the fifth electrode and the sixth electrode are disposed facing the first direction.

3. The pixel structure according to claim 2 , further comprising:

a plurality of third signal lines disposed on the first insulating layer, the third signal lines being electrically connected to the active device layer, the third signal lines being electrically insulated from the second electrode of the first light emitting element, and the third signal lines being electrically connected to the sixth electrode of the third light emitting element; and

a plurality of fourth signal lines, wherein a portion of the fourth signal lines is electrically connected to the third signal lines and the fourth electrode of the second light emitting element.

4. The pixel structure according to claim 2 , wherein the first insulating layer has a plurality of accommodating spaces, and the first light emitting element and the third light emitting element are respectively disposed in the corresponding accommodating spaces.

5. The pixel structure according to claim 4 , further comprising a second insulating layer disposed on the first insulating layer, wherein the second insulating layer covers the first light emitting element and the third light emitting element, and a distance between a center of the first light emitting element and a center line of the corresponding accommodating space is greater than a distance between a center of the third light emitting element and a center line of the other corresponding accommodating space.

6. A repairing method of a pixel structure, comprising:

providing a substrate;

forming an active device layer on the substrate;

forming a first insulating layer on the active device layer;

transferring a first light emitting element onto the first insulating layer;

forming a circuit layer on the first insulating layer, the circuit layer being electrically connected to the active device layer;

forming a second insulating layer on the first insulating layer, the second insulating layer covering the first light emitting element and the circuit layer;

disposing a second light emitting element on the second insulating layer, the second light emitting element overlapping with a portion of the first light emitting element in a first direction; and

forming a plurality of second signal lines on the second insulating layer, the second signal lines being electrically connected to the circuit layer and the second light emitting element,

wherein the first light emitting element has a first electrode and a second electrode, the second light emitting element has a third electrode and a fourth electrode, and the first electrode, the second electrode, the third electrode, and the fourth electrode are disposed facing the first direction.

7. The repairing method of a pixel structure according to claim 6 , wherein the circuit layer comprises a plurality of first signal lines and a plurality of third signal lines, the circuit layer electrically connects the active device layer to the first electrode of the first light emitting element, and after the step of forming the circuit layer, the repairing method further comprises:

performing a removal process to cut off connection between the circuit layer and the first light emitting element and electrically insulate the first signal lines from the first light emitting element.

8. The repairing method of a pixel structure according to claim 7 , further comprising:

after the step of forming the first insulating layer and before the step of forming the first signal lines, transferring a third light emitting element onto the first insulating layer, wherein the third light emitting element has a fifth electrode and a sixth electrode, and the first signal lines are electrically connected to the fifth electrode of the third light emitting element; and

after the step of forming the second signal lines, forming a plurality of fourth signal lines on the second insulating layer, wherein a portion of the fourth signal lines is electrically connected to the third signal lines and the fourth electrode of the second light emitting element,

wherein the third signal lines are electrically insulated from the second electrode of the first light emitting element, and the third signal lines are electrically connected to the sixth electrode of the third light emitting element.

9. The repairing method of a pixel structure according to claim 8 , wherein a method of forming the second signal lines comprises disposing the second signal lines on the first light emitting element and the third light emitting element, wherein the second signal lines respectively overlap with a portion of the first light emitting element and a portion of the third light emitting element in the first direction.

10. The repairing method of a pixel structure according to claim 8 , wherein a method of forming the second signal lines comprises disposing the second signal lines on the first light emitting element, and the second signal lines overlap with a portion of the first light emitting element in the first direction.