CROSS-REFERENCE TO RELATED APPLICATIONS

The present application claims priority to Chinese Patent Application No. 202010557829.7, filed on Jun. 18, 2020, the content of which is incorporated herein by reference in its entirety.

FIELD

The present disclosure relates to display technology, and more particularly, to a display panel and a manufacturing method thereof, and a display apparatus.

BACKGROUND

In the manufacturing process of light-emitting diode display panel, such as a micro LED display panel, it needs to transfer light-emitting diodes formed on a growth substrate to an array substrate by means of mass transfer technology. Since there are too many light-emitting diodes that need to be transferred, it is inevitable that there is a light-emitting diode incapable of emitting light due to the influence of the transferring success rate.

FIG. 1is a schematic diagram of an arrangement of sub-pixel regions in the related art. As shown inFIG. 1, in the related art, rows of display sub-pixel regions1′ for bonding display light-emitting diodes and rows of backup sub-pixel regions2′ for bonding the backup light-emitting diodes are alternately arranged in a column direction. Each backup sub-pixel region2′ is provided with a backup anode and a backup cathode. When a display light-emitting diode bonded in a display sub-pixel regions1′ is broken, a backup light-emitting diode is bonded in the backup sub-pixel region2′ corresponding to the broken display sub-pixel regions1′ to compensate its emission brightness.

However, in practical applications, only a small number of backup sub-pixel regions2′ are provided with the backup light-emitting diodes, other backup sub-pixel regions2′ are not provided with the backup light-emitting diodes. Therefore, if the above arrangement is adopted, when the display panel emits light, a dark line appears in the area where the backup sub-pixel regions2′ is located, which affects the display effect.

SUMMARY

In one aspect, an embodiment of the present disclosure provides a display panel including an array substrate and a plurality of light-emitting diodes. The array substrate has a display area, the display area includes a plurality of sub-pixel regions, and the plurality of sub-pixel regions includes a plurality of display sub-pixel regions and a plurality of backup sub-pixel regions. In each one of a first direction and a second direction that intersect with each other, the plurality of display sub-pixel regions and the plurality of backup sub-pixel regions are arranged alternately. A display anode and a display cathode are provided in each of the plurality of display sub-pixel regions, and at least one backup anode and a backup cathode are provided in each of at least one of the plurality of backup sub-pixel regions. The display anode provided in each of at least one of the plurality of display sub-pixel regions is electrically connected to at least two backup anodes respectively provided in at least two of the plurality of backup sub-pixel regions, and/or the at least one backup anode includes at least two backup anodes electrically connected, in one-to-one correspondence, to at least two display anodes respectively located in at least two of the plurality of display sub-pixel regions.

In another aspect, an embodiment of the present disclosure provides a manufacturing method of a display panel, and the method includes the following steps:

forming an array substrate having a display area, where the display area includes a plurality of sub-pixel regions including a plurality of display sub-pixel regions and a plurality of backup sub-pixel regions, and the plurality of display sub-pixel regions and the plurality of backup sub-pixel regions are arranged alternately in both a first direction and a second direction that intersect with each other;

forming a display anode and a display cathode in each of the plurality of display sub-pixel regions, and forming at least one backup anode and a backup cathode in each of at least one of the plurality of backup sub-pixel regions, wherein the display anode provided in each of at least one of the plurality of display sub-pixel regions is electrically connected to at least two backup anodes respectively provided in at least two of the plurality of backup sub-pixel regions, and/or the at least one backup anode includes at least two backup anodes electrically connected, in one-to-one correspondence, to at least two display anodes respectively located in at least two of the plurality of display sub-pixel regions;

forming a plurality of display light-emitting diodes on a growth substrate;

transferring and bonding the plurality of display light-emitting diodes to the plurality of display sub-pixel regions, where each of the plurality of display light-emitting diodes includes a positive pin bonded to the display anode provided in one of the plurality of display sub-pixel regions and a negative pin bonded to the display cathode provided in the one of the plurality of display sub-pixel regions; and

detecting whether at least one of the plurality of display light-emitting diodes is incapable of emitting light or not, and in response to detecting the at least one display light-emitting diode being incapable of emitting light, bonding a backup light-emitting diode to one backup anode of the at least one backup anode electrically connected to one of the at least one display light-emitting diode and the backup cathode corresponding to the one backup anode.

In yet another aspect, an embodiment of the present disclosure provides a display apparatus including a display panel. The display panel includes an array substrate and a plurality of light-emitting diodes. The array substrate has a display area, the display area includes a plurality of sub-pixel regions, and the plurality of sub-pixel regions includes a plurality of display sub-pixel regions and a plurality of backup sub-pixel regions. In each one of a first direction and a second direction that intersect with each other, the plurality of display sub-pixel regions and the plurality of backup sub-pixel regions are arranged alternately. A display anode and a display cathode are provided in each of the plurality of display sub-pixel regions, and at least one backup anode and a backup cathode are provided in each of at least one of the plurality of backup sub-pixel regions. The display anode provided in each of at least one of the plurality of display sub-pixel regions is electrically connected to at least two backup anodes respectively provided in at least two of the plurality of backup sub-pixel regions, and/or the at least one backup anode includes at least two backup anodes electrically connected, in one-to-one correspondence, to at least two display anodes respectively located in at least two of the plurality of display sub-pixel regions.

