CN-122028622-A - Display panel, display device and preparation method of display panel

Abstract

The application discloses a display panel, a display device and a preparation method of the display panel. When the light-emitting layer is prepared, the light-emitting layer generates larger drop at the edge of the isolation structure and is difficult to connect, so that the light-emitting layer is broken to form light-emitting units which are mutually disconnected and positioned in the isolation opening, a precise mask plate is not required, the development and the use of the precise mask plate can be reduced, and the preparation cost is reduced. The first area is larger than or equal to the second area, namely the first electrode has larger overlap joint area between the first end and the isolation structure, so that the overlap joint effect of the first electrode and the first electrode on one side of the first end is improved, the overlap joint impedance and the power consumption of the display panel are reduced, the problem of dark spots caused by poor overlap joint of the first electrode and the isolation structure is solved, and the display effect and the service performance of the display panel are improved.

Inventors

• ZHOU ZHIWEI

Assignees

• 合肥维信诺科技有限公司

Dates

Publication Date

20260512

Application Date

20241111

Claims (20)

1. 1. A display panel, the display panel comprising: A substrate; the isolation structure is positioned on one side of the substrate and is enclosed to form an isolation opening; a light emitting layer located at one side of the substrate, the light emitting layer including a light emitting unit at least partially located at the isolation opening; The first electrode layer is located the luminescent layer deviates from one side of base plate, the first electrode layer including being located in the isolation opening and with isolation structure electricity is connected first electrode, first electrode has the relative first end and the second end that sets up in first direction, first end with area of contact between the isolation structure is first area, the second end with area of contact between the isolation structure is the second area, first area is greater than or equal to the second area.
2. 2. The display panel of claim 1, wherein the orthographic projection of the second end at the substrate is located within the orthographic projection of the light emitting unit at the substrate; Preferably, the second end is spaced from the isolation structure; Preferably, a portion of the light emitting unit is located between the second end and the isolation structure.
3. 3. The display panel of claim 1, wherein a distance between the first end and the substrate is a first distance, a distance between the second end and the substrate is a second distance, and the first distance is greater than or equal to the second distance.
4. 4. The display panel according to claim 1, wherein the first electrode further has a third end and a fourth end disposed opposite to each other in a second direction, a contact area between the third end and the isolation structure is a third area, a contact area between the fourth end and the isolation structure is a fourth area, the third area is greater than or equal to the fourth area, and the first direction and the second direction intersect; Preferably, part of the first area corresponding to the first electrode is larger than the second area, and the other part of the third area corresponding to the first electrode is larger than the fourth area; preferably, the orthographic projection of the fourth end on the substrate is located within the orthographic projection of the light emitting unit on the substrate; preferably, the fourth end is spaced from the isolation structure; Preferably, a portion of the light emitting unit is located between the fourth end and the isolation structure.
5. 5. The display panel of claim 4, wherein a distance between the third end and the substrate is a third distance, a distance between the fourth end and the substrate is a fourth distance, and the third distance is greater than or equal to the fourth distance.
6. 6. The display panel according to claim 1, wherein the light emitting unit has a fifth end and a sixth end disposed opposite to each other in the first direction, a contact area between the fifth end and the isolation structure is a fifth area, and a contact area between the sixth end and the isolation structure is a sixth area, the sixth area being greater than or equal to the fifth area; preferably, the first end and the sixth end are respectively disposed at two opposite sides of the isolation opening in the first direction.
7. 7. The display panel of claim 6, wherein a distance between the fifth end and the substrate is a fifth distance, and a distance between the sixth end and the substrate is a sixth distance, the sixth distance being greater than or equal to the fifth distance.
8. 8. The display panel of claim 6, wherein the front projection of the fifth end at the substrate is within the front projection of the first electrode at the substrate; Preferably, the fifth end is spaced from the isolation structure; Preferably, a portion of the first electrode is located between the fifth end and the isolation structure.
9. 9. The display panel according to claim 6, wherein the light-emitting unit has a seventh end and an eighth end disposed opposite to each other in the second direction, a contact area between the seventh end and the isolation structure is a seventh area, a contact area between the eighth end and the isolation structure is an eighth area, and the eighth area is greater than or equal to the seventh area; preferably, a portion of the sixth product corresponding to the light emitting unit is larger than the fifth area, and another portion of the eighth product corresponding to the light emitting unit is larger than the seventh area.
10. 10. The display panel of claim 9, wherein a distance between the seventh end and the substrate is a seventh distance, and wherein a distance between the eighth end and the substrate is an eighth distance, and wherein the eighth distance is greater than or equal to the seventh distance.
11. 11. The display panel of claim 1, wherein the barrier opening comprises alternating first and second sides at the orthographic projection edge of the substrate, the two first sides being disposed opposite one another in the first direction, the two second sides being disposed opposite one another in the second direction, or the two first sides being disposed opposite one another in the second direction, the two second sides being disposed opposite one another in the first direction, the first sides having a dimension greater than or equal to a dimension of the second sides; Preferably, two first sides of a part of the isolation openings are disposed opposite to each other in the first direction, and two first sides of the other part of the isolation openings are disposed opposite to each other in the second direction.
12. 12. The display panel of claim 1, wherein at least one of the first ends of two adjacent first electrodes is in contact connection with a portion of the isolation structure between two adjacent first electrodes; Preferably, the first ends of two adjacent first electrodes are in contact connection with a part of the isolation structure between the two adjacent first electrodes; preferably, the isolation structure includes a first segment and a second segment disposed opposite to each other in the first direction, one of the first ends of two adjacent first electrodes is in contact connection with the first segment, and the other is in contact connection with the second segment.
13. 13. The display panel according to claim 1, the display panel is characterized in that the display panel further comprises: A pixel defining layer located on one side of the substrate, the pixel defining layer including a pixel defining portion and a pixel opening surrounded by the pixel defining portion, the pixel opening communicating with the isolation opening; preferably, the display panel further includes a second electrode between the substrate and the light emitting unit, at least a portion of the second electrode being exposed from the pixel opening.
14. 14. The display panel according to claim 13, wherein the first electrode includes a first division and a second division which are disposed at intervals in the first direction, and orthographic projections of the first division and the second division on the substrate are respectively located within orthographic projections of adjacent two of the pixel defining portions on the substrate, and orthographic projection areas of the first division on the substrate are larger than or equal to orthographic projection areas of the second division on the substrate; preferably, the first end is located in the first section and the second end is located in the second section.
15. 15. The display panel according to claim 13, wherein the light emitting unit includes a third division and a fourth division which are disposed at intervals in the first direction, orthographic projections of the third division and the fourth division on the substrate are respectively located within orthographic projections of adjacent two of the pixel defining portions on the substrate, and orthographic projection areas of the fourth division on the substrate are larger than or equal to orthographic projection areas of the third division on the substrate.
16. 16. The display panel of claim 1, wherein the isolation structure comprises a first layer and a second layer on a side of the first layer facing away from the substrate, an orthographic projection of the first layer on the substrate being within an orthographic projection of the second layer on the substrate; preferably, the first layer comprises a conductive material; preferably, the second layer comprises a conductive material or an insulating material; Preferably, the first layer and the second layer each comprise a metallic material, and the materials of the first layer and the second layer are different; preferably, the isolation structure further comprises a third layer located on a side of the first layer facing the substrate, and the orthographic projection of the first layer on the substrate is located within the orthographic projection of the third layer on the substrate.
17. 17. A display panel, the display panel comprising: A substrate; the isolation structure is positioned on one side of the substrate and is enclosed to form an isolation opening; a light emitting layer located at one side of the substrate, the light emitting layer including a light emitting unit at least partially located at the isolation opening; A first electrode layer positioned on one side of the light-emitting layer away from the substrate, the first electrode layer comprising a first electrode positioned in the isolation opening and electrically connected with the isolation structure, The light emitting unit is provided with a fifth end and a sixth end which are oppositely arranged in the first direction, the contact area between the fifth end and the isolation structure is a fifth area, the contact area between the sixth end and the isolation structure is a sixth area, and the sixth area is larger than or equal to the fifth area.
18. 18. The display panel of claim 17, wherein the barrier opening comprises alternating first and second sides at the orthographic projection edge of the substrate, the two first sides being disposed opposite the first direction, the two second sides being disposed opposite the second direction, the first side having a dimension greater than or equal to a dimension of the second side, the first and second directions intersecting.
19. 19. A display device comprising the display panel of any one of claims 1-18.
20. 20. A method for manufacturing a display panel, comprising: Preparing an isolation structure on a substrate, wherein the isolation structure is enclosed to form an isolation opening; preparing a light-emitting layer on the substrate, wherein the light-emitting layer comprises a light-emitting unit at least partially positioned in the isolation opening; The light-emitting device comprises a substrate, a light-emitting layer, a first electrode layer, a second electrode layer, a first electrode layer and a second electrode layer, wherein the first electrode layer is arranged on one side of the light-emitting layer, which is away from the substrate, the first electrode layer comprises a first end and a second end which are oppositely arranged in a first direction, the contact area between the first end and the isolation structure is a first area, the contact area between the second end and the isolation structure is a second area, and the first area is larger than or equal to the second area.

Description

Display panel, display device and preparation method of display panel Technical Field The application relates to the field of display, in particular to a display panel, a display device and a preparation method of the display panel. Background Organic LIGHT EMITTING (OLED) and flat display devices based on light emitting Diode (LIGHT EMITTING) technology have been widely used in various consumer electronic products such as mobile phones, televisions, notebook computers, and desktop computers, because of their advantages such as high image quality, power saving, thin body, and wide application range. However, the service performance of the current OLED display product needs to be improved. Disclosure of Invention The embodiment of the application provides a display panel, a display device and a preparation method of the display panel, aiming at improving the service performance of OLED display products. The embodiment of the first aspect of the application provides a display panel, which comprises a substrate, an isolation structure, a luminescent layer and a first electrode layer, wherein the isolation structure is positioned on one side of the substrate and surrounds the isolation structure to form an isolation opening, the luminescent layer is positioned on one side of the substrate and comprises a luminescent unit at least partially positioned in the isolation opening, the first electrode layer is positioned on one side of the luminescent layer, which is away from the substrate, and comprises a first electrode positioned in the isolation opening and electrically connected with the isolation structure, the first electrode is provided with a first end and a second end which are oppositely arranged in a first direction, the contact area between the first end and the isolation structure is a first area, the contact area between the second end and the isolation structure is a second area, and the first area is larger than or equal to the second area. According to an embodiment of the first aspect of the application, the orthographic projection of the second end at the substrate is located within the orthographic projection of the light emitting unit at the substrate. According to any of the foregoing embodiments of the first aspect of the present application, the second end is spaced apart from the isolation structure. According to any of the foregoing embodiments of the first aspect of the present application, a portion of the light emitting units are located between the second end and the isolation structure. According to any one of the foregoing embodiments of the first aspect of the present application, the distance between the first end and the substrate is a first distance, the distance between the second end and the substrate is a second distance, and the first distance is greater than or equal to the second distance. According to any one of the foregoing embodiments of the first aspect of the present application, the first electrode further has a third end and a fourth end disposed opposite to each other in the second direction, a contact area between the third end and the isolation structure is a third area, a contact area between the fourth end and the isolation structure is a fourth area, the third area is greater than or equal to the fourth area, and the first direction and the second direction intersect. According to any one of the foregoing embodiments of the first aspect of the present application, a portion of the first electrodes corresponds to a first area larger than the second area, and another portion of the first electrodes corresponds to a third area larger than the fourth area. According to any of the foregoing embodiments of the first aspect of the present application, the orthographic projection of the fourth terminal on the substrate is located within the orthographic projection of the light emitting unit on the substrate. According to any of the foregoing embodiments of the first aspect of the present application, the fourth end is spaced apart from the isolation structure. According to any of the foregoing embodiments of the first aspect of the present application, a portion of the light emitting cells are located between the fourth end and the isolation structure. According to any one of the foregoing embodiments of the first aspect of the present application, the distance between the third end and the substrate is a third distance, the distance between the fourth end and the substrate is a fourth distance, and the third distance is greater than or equal to the fourth distance. According to any one of the foregoing embodiments of the first aspect of the present application, the light emitting unit has a fifth end and a sixth end disposed opposite to each other in the first direction, a contact area between the fifth end and the isolation structure is a fifth area, a contact area between the sixth end and the isolation structure is a sixth area, and the sixth area is greater than