Self-luminous display panel and self-luminous display panel manufacturing method
A self-luminous display panel 10 in which self-luminous elements 2 are arranged on a plane, wherein each of the self-luminous elements includes: a pair of electrodes 13, 20 disposed facing each other, an electrode of the pair of electrodes including a metal layer 20 A; functional layers 15, 16, 17, 18, 19 including a light emitting layer 17 , disposed between the pair of electrodes; and a sealing layer 21 that covers the pair of electrodes and the functional layers from a direction. The self-luminous elements include a repaired self-luminous element 2 ′. The repaired self-luminous element includes a foreign object FO among the functional layers. The electrode including the metal layer has a high resistance portion 201 surrounding, in plan view, an area containing the foreign object, and has a thickened portion 202 of the metal layer at an outer edge, in plan view, of the high resistance portion.
1. A self-luminous display panel in which self-luminous elements are arranged on a plane, wherein
each of the self-luminous elements comprises:
a pair of electrodes disposed facing each other, an electrode of the pair of electrodes including a metal layer;
functional layers including a light emitting layer, disposed between the pair of electrodes; and
a sealing layer that covers the pair of electrodes and the functional layers from a direction, wherein
the self-luminous elements include a repaired self-luminous element, and
the repaired self-luminous element further comprises:
a foreign object among the functional layers, wherein
the electrode including the metal layer has a high resistance portion surrounding, in plan view, an area containing the foreign object, and has a thickened portion of the metal layer at an outer edge, in plan view, of the high resistance portion.
2. The self-luminous display panel of claim 1 , wherein
the high resistance portion is a ring-shaped portion of the electrode including the metal layer that surrounds the foreign object in plan view.
3. The self-luminous display panel of claim 1 , wherein
a thickness of the thickened portion of the metal layer decreases as distance from the high resistance portion increases in plan view.
4. The self-luminous display panel of claim 1 , wherein
the electrode including the metal layer further includes a layer made of a metal oxide.
5. A self-luminous display panel in which self-luminous elements are arranged on a plane, wherein
each of the self-luminous elements comprises:
a pair of electrodes disposed facing each other, an electrode of the pair of electrodes including a metal layer;
functional layers including a light emitting layer, disposed between the pair of electrodes; and
a sealing layer that covers the pair of electrodes and the functional layers from a direction, wherein
the self-luminous elements include a repaired self-luminous element,
the repaired self-luminous element further comprises:
a foreign object among the functional layers, wherein
the electrode including the metal layer has a high resistance portion that is a portion of the electrode including the metal layer that contains the foreign object, in plan view, and has a thickened portion of the metal layer at an outer edge, in plan view, of the high resistance portion.
6. The self-luminous display panel of claim 5 , wherein
the high resistance portion is a portion of the electrode including the metal layer that is disposed above the foreign object.
7. The self-luminous display panel of claim 5 , wherein
a thickness of the thickened portion of the metal layer decreases as distance from the resistance portion increases in plan view.
8. The self-luminous display panel of claim 5 , wherein
the electrode including the metal layer further includes a metal oxide layer.
9. A method of manufacturing a self-luminous display panel in which self-luminous elements are arranged on a plane, comprising:
a process of forming the self-luminous elements on a substrate surface;
a process of driving the self-luminous elements to detect an abnormal self-luminous element; and
a process of repairing the abnormal self-luminous element, wherein
the process of forming the self-luminous elements comprises:
a sub-process of forming a pair of electrodes disposed facing each other, an electrode of the pair of electrodes including a metal layer;
a sub-process of forming functional layers including a light emitting layer disposed between the pair of electrodes; and
a sub-process of forming a sealing layer that covers the pair of electrodes and the functional layers, wherein
the process of repairing the abnormal self-luminous element comprises:
a process of detecting a position of a foreign object in the abnormal self-luminous element; and
a process of forming a high resistance portion in the electrode including the metal layer in the abnormal self-luminous element, where the high resistance portion, in plan view, surrounds an area containing the foreign object, wherein
in the process of forming the high resistance portion, a thickened portion of the metal layer close to an outer edge of the high resistance portion is formed.
10. The method of manufacturing the self-luminous display panel of claim 9 , wherein
in the process of forming the high resistance portion, a ring-shaped portion of the electrode including the metal layer that surrounds the foreign object in plan view is irradiated by a laser having a picosecond pulse width.
11. The method of manufacturing the self-luminous display panel of claim 9 , wherein
in the process of forming the high resistance portion, the thickened portion is formed by metal in the metal layer being melted by irradiation by a laser having a picosecond pulse width and a portion of the metal layer moving.
12. The method of manufacturing the self-luminous display panel of claim 9 , wherein
the electrode including the metal layer further includes a metal oxide layer.
13. A method of manufacturing a self-luminous display panel in which self-luminous elements are arranged on a plane, the method comprising:
a process of forming the self-luminous elements on a substrate surface;
a process of driving the self-luminous elements to detect an abnormal self-luminous element; and
a process of repairing the abnormal self-luminous element, wherein
the process of forming the self luminous elements comprises:
a sub-process of forming a pair of electrodes disposed facing each other, an electrode of the pair of electrodes including a metal layer;
a sub-process of forming functional layers including a light emitting layer disposed between the pair of electrodes; and
a sub-process of forming a sealing layer that covers the pair of electrodes and the functional layers, wherein
the process of repairing the abnormal self-luminous element comprises:
a process of detecting a position of a foreign object in the abnormal self-luminous element; and
a process of forming a high resistance portion in the electrode including the metal layer in the abnormal self-luminous element, where the high resistance portion, in plan view, contains an area containing the foreign object, wherein
in the process of forming the high resistance portion, a thickened portion of the metal layer close to an outer edge of the high resistance portion is formed.
14. The method of manufacturing the self-luminous display panel of claim 13 , wherein
in the process of forming the high resistance portion, the portion of the electrode including the metal layer that contains the foreign object in plan view is irradiated by a laser having a picosecond pulse width.
15. The method of manufacturing the self-luminous display panel of claim 13 , wherein
in the process of forming the high resistance portion, the thickened portion is formed by metal in the metal layer being melted by irradiation by a laser having a picosecond pulse width and a portion of the metal layer moving.
16. The method of manufacturing the self-luminous display panel of claim 13 , wherein
the electrode including the metal layer further includes a metal oxide layer.