US-12622061-B2 - Display panel and display device

Abstract

A display panel and a display device are provided. The display panel includes a substrate, a driving layer located on a side of the substrate, light-emitting elements and a light-blocking layer; the driving layer includes thin-film transistors, a first functional layer and a second functional layer, the first functional layer includes a first opening, the second functional layer includes a second opening, the first opening overlaps with the second opening in a first direction, and a size of the first opening is different from a size of the second opening in a second direction. The light-emitting element and the driving layer are located on a same side of the substrate, and the light-emitting element is electrically connected to at least part of the thin-film transistors of the driving layer. The light-blocking layer at least partially overlaps with a sidewall of the first opening in the second direction.

Inventors

• Rusheng LIU
• Xiaoxiang HE

Assignees

• TIANMA ADVANCED DISPLAY TECHNOLOGY INSTITUTE (XIAMEN) CO., LTD.

Dates

Publication Date

20260505

Application Date

20230518

Priority Date

20221230

Claims (20)

1. 1 . A display panel comprising: a substrate; a driving layer located on a side of the substrate, wherein the driving layer comprises thin-film transistors, and the driving layer comprises a first functional layer and a second functional layer, the first functional layer comprises a first opening, the second functional layer comprises a second opening, wherein the first opening overlaps with the second opening in a first direction; a size of the first opening is different from a size of the second opening in a second direction; the first direction is vertical to a plane where the display panel is located, and the second direction intersects with the first direction, the second direction is parallel to a plane where the display panel is located; light-emitting elements, wherein the light-emitting elements and the driving layer are located on a same side of the substrate, and the light-emitting elements are electrically connected to at least part of the thin-film transistors in the driving layer; and a light-blocking layer, wherein the light-blocking layer at least partially overlaps with a sidewall of the first opening in the second direction, and wherein the light-blocking layer is in direct contact with at least one of the sidewall of the first opening or a sidewall of the second opening.
2. 2 . The display panel according to claim 1 , wherein the first functional layer comprises an inorganic material, and a minimum distance a between the sidewall of the first opening and the thin-film transistors in the second direction satisfies: a≥3 μm.
3. 3 . The display panel according to claim 1 , wherein the light-blocking layer is at least partially arranged on a side of the driving layer facing away from the substrate, and a minimum distance b between a sidewall of the light-blocking layer close to the first functional layer and sidewalls of the thin-film transistors in the second direction satisfies: b≥2 μm.
4. 4 . The display panel according to claim 1 , wherein the light-blocking layer at least partially overlaps with a sidewall of the second opening in the second direction.
5. 5 . The display panel according to claim 1 , wherein each thin-film transistor comprises an active layer, and the light-blocking layer overlaps with at least part of the active layer in the second direction.
6. 6 . The display panel according to claim 1 , wherein the light-blocking layer comprises at least one of a light-absorbing layer and a reflecting layer, the light-absorbing layer comprises a light-absorbing material, and the reflecting layer comprises a light-reflecting material.
7. 7 . The display panel according to claim 6 , wherein the light-blocking layer comprises the light-absorbing layer and the reflecting layer stacked in the second direction, and the light-absorbing layer is arranged on a side of the reflecting layer facing toward the first functional layer.
8. 8 . The display panel according to claim 1 , wherein a material of the first functional layer comprises an inorganic material, a material of the second functional layer comprises an organic material, the second functional layer is located on a side of the first functional layer facing away from the substrate, and the size of the first opening is greater than the size of the second opening in the second direction.
9. 9 . The display panel according to claim 8 , wherein the first functional layer comprises a first sub-layer and a second sub-layer, the second sub-layer is located on a side of the first sub-layer facing away from the substrate, the first opening comprises a first sub-opening and a second sub-opening, the first sub-opening is arranged corresponding to the first sub-layer, and the second sub-opening is arranged corresponding to the second sub-layer, and a size of the first sub-opening is less than a size of the second sub-opening in the second direction.
10. 10 . The display panel according to claim 8 , wherein the driving layer further comprises an organic layer, the organic layer is arranged in the first opening and is in contact with the sidewall of the first opening, a material of the light-blocking layer comprises an organic material, and the light-blocking layer is in contact with a sidewall of the organic layer facing away from the first functional layer.
11. 11 . The display panel according to claim 10 , wherein a sidewall of the organic layer facing away from the first functional layer is flush with a sidewall of the second opening.
12. 12 . The display panel according to claim 10 , wherein the organic layer and the second functional layer are made of a same material and are formed integrally.
13. 13 . The display panel according to claim 12 , wherein the second functional layer comprises a third sub-layer and a fourth sub-layer, the fourth sub-layer is located on a side of the third sub-layer facing away from the substrate, and the organic layer is formed with at least one of the third sub-layer and the fourth sub-layer integrally.
14. 14 . The display panel according to claim 8 , wherein the light-blocking layer comprises a first sub-portion, a material of the first sub-portion comprises an inorganic material, and at least part of the first sub-portion is connected to the sidewall of the first opening.
15. 15 . The display panel according to claim 14 , wherein a material of the first sub-portion comprises at least one of chromium oxide and metal.
16. 16 . The display panel according to claim 14 , wherein the light-blocking layer further comprises a second sub-portion connected to the first sub-portion, a material of the second sub-portion comprises an organic material, and at least part of the second sub-portion is arranged on a side of the second functional layer facing away from the first functional layer.
17. 17 . The display panel according to claim 16 , wherein the second sub-portion has a third opening, an overlapped portion of the first opening and the second opening overlaps with the third opening in the first direction, and the first sub-portion is connected to a sidewall of the third opening.
18. 18 . The display panel according to claim 16 , wherein the first functional layer comprises a first sub-layer and a second sub-layer, the second sub-layer is located on a side of the first sub-layer facing away from the substrate, the first opening comprises a first sub-opening and a second sub-opening, the first sub-opening is arranged corresponding to the first sub-layer, and the second sub-opening is arranged corresponding to the second sub-layer; a size of the second sub-opening is greater than a size of the first sub-opening and is greater than the size of the second opening in the second direction; the first sub-portion is connected to a sidewall of the first sub-opening and is connected to a sidewall of the second sub-opening.
19. 19 . The display panel according to claim 18 , wherein the second sub-portion is further connected to a sidewall of the second opening.
20. 20 . A display device comprising a display panel, wherein the display panel comprises: a substrate; a driving layer located on a side of the substrate, wherein the driving layer comprises thin-film transistors, and the driving layer comprises a first functional layer and a second functional layer, the first functional layer comprises a first opening, the second functional layer comprises a second opening, wherein the first opening overlaps with the second opening in a first direction; a size of the first opening is different from a size of the second opening in a second direction; the first direction is vertical to a plane where the display panel is located, and the second direction intersects with the first direction, the second direction is parallel to a plane where the display panel is located; light-emitting elements, wherein the light-emitting elements and the driving layer are located on a same side of the substrate, and the light-emitting elements are electrically connected to at least part of the thin-film transistors in the driving layer; and a light-blocking layer, wherein the light-blocking layer at least partially overlaps with a sidewall of the first opening in the second direction, and wherein the light-blocking layer is in direct contact with at least one of the sidewall of the first opening or a sidewall of the second opening.

Description

This application claims priority to Chinese Patent Application No. 202211729901.5, titled “DISPLAY PANEL AND DISPLAY DEVICE”, filed on Dec. 30, 2022 with the China National Intellectual Property Administration, which is hereby incorporated by reference in its entirety. FIELD The present disclosure relates to the field of display technology, and more particularly, to a display panel and a display device. BACKGROUND Flat display panels such as liquid crystal display (LCD) panels, organic light-emitting display (OLED) panels, and display panels using light-emitting diodes (LEDs) devices such as micro light-emitting diodes (Micro LEDs) and mini light-emitting diodes (Mini LEDs) are widely used in mobile phones, TVs, personal digital assistants, digital cameras, notebook computers, desktop computers and other consumer electronics products due to their advantages such as high image quality, power saving, thin body and wide application range. In the light-emission of the display panel, the light emitted by two adjacent sub-pixels will interfere with each other, affecting the display effect of the display panel significantly. Hence, how to reduce the interference of adjacent sub-pixels during the display process of the display panel is a problem to be solved. SUMMARY In view of this, a display panel and a display device are provided according to the present disclosure, which are beneficial to reduce the interference of adjacent sub-pixels of the display panel. In one embodiment, a display panel provided according to the present disclosure includes a substrate, a driving layer located on a side of the substrate, light-emitting elements and a light-blocking layer. The driving layer includes thin-film transistors. The driving layer includes a first functional layer and a second functional layer, the first functional layer includes a first opening, the second functional layer includes a second opening, the first opening overlaps with the second opening in a first direction, and a size of the first opening is different from a size of the second opening in a second direction; the first direction is vertical to a plane where the display panel is located, and the second direction intersects with the first direction. The light-emitting elements and the driving layer are located on a same side of the substrate, and the light-emitting elements are electrically connected to at least part of the thin-film transistors of the driving layer. The light-blocking layer at least partially overlaps with a sidewall of the first opening in the second direction. In one embodiment, a display device is provided according to the embodiments of the present disclosure. The display device includes a display panel. The display panel includes a substrate, a driving layer located on a side of the substrate, light-emitting elements and a light-blocking layer. The driving layer includes thin-film transistors. The driving layer includes a first functional layer and a second functional layer, the first functional layer includes a first opening, the second functional layer includes a second opening, the first opening overlaps with the second opening in a first direction, and a size of the first opening is different from a size of the second opening in a second direction; the first direction is vertical to a plane where the display panel is located, and the second direction intersects with the first direction. The light-emitting elements and the driving layer are located on a same side of the substrate, and the light-emitting elements are electrically connected to at least part of the thin-film transistors of the driving layer. The light-blocking layer at least partially overlaps with a sidewall of the first opening in the second direction. BRIEF DESCRIPTION OF THE DRAWINGS The embodiments of the present disclosure will be described below with reference to the accompanying drawings. In the drawings, same components are indicated by same reference signs. The drawings are not drawn to scale. FIG. 1 is a top view of a display panel according to an embodiment of the present disclosure; FIG. 2 is a partial structural diagram of a display panel according to an embodiment of the present disclosure; FIG. 3 is a sectional view of FIG. 2 along B-B direction; FIG. 4 is another sectional view of FIG. 1 along B-B direction; FIG. 5 is yet another sectional view of FIG. 2 along B-B direction; FIG. 6 is a partial structural diagram of a display panel according to another embodiment of the present disclosure; FIG. 7 is a sectional view of FIG. 6 along C-C direction; FIG. 8 is yet another sectional view of FIG. 2 along B-B direction; FIG. 9 is yet another sectional view of FIG. 2 along B-B direction; FIG. 10 is yet another sectional view of FIG. 2 along B-B direction; FIG. 11 is yet another sectional view of FIG. 2 along B-B direction; FIG. 12 is yet another sectional view of FIG. 2 along B-B direction; FIG. 13 is yet another sectional view of FIG. 2 along B-B direction;