TW202002350A - Display panel - Google Patents

Abstract

Provided is a display panel including the following devices. The at least one active device is located on a substrate. The insulating layer is located on the at least one active device. The pixel definition layer is located on the insulating layer. At least one portion of the at least one electro-luminescent layer is located in at least one accommodating hole of the pixel definition layer, and electrically connected to the at least one active device to constitute at least one pixel. At least one trench penetrates through the pixel definition layer and adjacent to the electro-luminescent layer. The upper electrode is located on the electro-luminescent layer and at least one portion of the upper electrode is filled in the at least one trench. The encapsulation layer is located on the upper electrode and at least one portion of the encapsulation layer is filled in the at least one trench.

Description

Display panel

The present invention relates to a display panel, and particularly to a display panel having an electroluminescent element.

Organic electroluminescent device (organic electroluminescent device) is a semiconductor device that can convert electrical energy into light energy and has high conversion efficiency. Its common uses are indicator lights and light-emitting devices of display panels. Since organic electroluminescent devices have features such as no viewing angle problem and full color, they meet the requirements of display characteristics in the multimedia era and are expected to become the mainstream of flat panel displays.

However, components such as oxygen and moisture in the air can damage the organic electroluminescent layer in the organic electroluminescent element, which in turn affects the service life of the organic electroluminescent element. Therefore, how to provide an organic electroluminescent device packaging technology to increase the service life of the organic electroluminescent device will become an important subject.

An embodiment of the present invention provides a display panel that fills a portion of the encapsulation layer into a trench adjacent to an electroluminescent element to increase the lateral water and oxygen barrier capacity of the display panel, thereby increasing the service life of the display panel.

An embodiment of the present invention provides a display panel including a substrate, at least one active element, an insulating layer, a pixel definition layer, at least one electroluminescent layer, an upper electrode, and an encapsulation layer. At least one active element is located on the substrate. The insulating layer is located on at least one active device. The pixel definition layer is located on the insulating layer. At least a part of the at least one electroluminescent layer is located in at least one accommodating portion of the pixel definition layer, and is electrically connected to at least one active element to constitute at least one pixel. At least one trench penetrates the pixel definition layer and is adjacent to the at least one electroluminescent layer. The upper electrode is located on at least one electroluminescent layer and at least a part of it is filled in at least one trench. The encapsulation layer is located on the upper electrode, and at least a part of the encapsulation layer is filled into the at least one trench.

Based on the above, one embodiment of the present invention fills a portion of the encapsulation layer into the trench adjacent to the electroluminescent device to increase the lateral water and oxygen resistance of the display panel, thereby increasing the service life of the display panel. In another embodiment of the present invention, a plurality of openings penetrating the pixel definition layer and the insulating layer may be formed between two adjacent pixels to increase the flexibility of the display panel. In addition, another part of the encapsulation layer can also be filled into a plurality of openings, so as to further increase the water and oxygen resistance of the display panel.

In order to make the above-mentioned features and advantages of the present invention more obvious and understandable, the embodiments are specifically described below in conjunction with the accompanying drawings for detailed description as follows.

The invention is explained more fully with reference to the drawings of this embodiment. However, the present invention can also be embodied in various forms, and should not be limited to the embodiments described herein. The thickness of layers and regions in the drawings will be exaggerated for clarity. The same or similar reference numerals indicate the same or similar elements, and the following paragraphs will not repeat them one by one.

FIG. 1 is a schematic cross-sectional view of a display panel according to a first embodiment of the invention.

Referring to FIG. 1, a first embodiment of the present invention provides a display panel 10, which includes a substrate 100, an active element AD, an interlayer insulating layer 108, 114, 116, 118, a pixel definition layer 122, an electroluminescent element EL and Encapsulation layer 130. In one embodiment, the material of the substrate 100 may be inorganic transparent materials (such as glass, quartz, other suitable materials and combinations thereof), organic transparent materials (such as polyolefins, polyhydrazines, polyalcohols, polyesters, Rubber, thermoplastic polymer, thermosetting polymer, polyaromatic hydrocarbons, polymethyl methacrylates, polycarbonates, other suitable materials, the above derivatives and combinations thereof) or combinations thereof.

As shown in FIG. 1, the active element AD is located on the substrate 100. The active device AD includes an active layer 102, a gate insulating layer 104, a gate 106, a drain 110, and a source 112, but the invention is not limited thereto. The active layer 102 is disposed on the substrate 100. In one embodiment, the material of the active layer 102 includes a semiconductor material. The semiconductor materials include (but are not limited to) silicon-based semiconductor materials (such as polysilicon), oxide-based semiconductor materials (such as indium oxide, tin oxide, zinc oxide, indium gallium zinc oxide, etc.) or combinations thereof.

The gate insulating layer 104 is disposed on the active layer 102 to cover the surfaces of the active layer 102 and the substrate 100. In an embodiment, the material of the gate insulating layer 104 includes silicon oxide (eg, silicon oxide), silicon nitride (eg, silicon nitride), or a combination thereof. Although FIG. 1 only shows the gate insulating layer 104 with a single layer, the invention is not limited thereto. In other embodiments, the gate insulating layer 104 may be a two-layer structure or more layers. In an alternative embodiment, when the gate insulating layer 104 is a two-layer structure, it may include different materials.

The gate electrode 106 is disposed on the gate insulating layer 104 so that the gate insulating layer 104 is located between the active layer 102 and the gate electrode 106. In an embodiment, the gate 106 may include a metal material, such as molybdenum, aluminum, chromium, gold, titanium, nickel, copper, and alloys thereof.

The interlayer insulating layer 108 is disposed on the gate 106 to cover the surfaces of the gate 106 and the gate insulating layer 104. In one embodiment, the material of the interlayer insulating layer 108 includes an inorganic dielectric material, which includes silicon oxide (such as silicon oxide), silicon nitride (such as silicon nitride), or a combination thereof.

The drain 110 and the source 112 are respectively disposed on the interlayer insulating layer 108. The drain electrode 110 and the source electrode 112 are electrically connected to the active layer 102 through contact holes (not labeled) in the interlayer insulating layer 108 and the gate insulating layer 104, respectively. In an embodiment, the materials of the drain electrode 110 and the source electrode 112 include a conductive material, which includes a metal, a metal oxide, or a combination thereof. The metal may be, for example, molybdenum, aluminum, chromium, gold, titanium, nickel, copper, and alloys thereof. The metal oxide may be, for example, indium tin oxide (ITO), indium zinc oxide (IZO), or a combination thereof. In other embodiments, the drain 110 and the source 112 may be the same conductive material. In alternative embodiments, the drain 110 and the source 112 may also be different conductive materials.

As shown in FIG. 1, the interlayer insulating layers 114, 116, and 118 are sequentially arranged on the drain electrode 110 and the source electrode 112. In one embodiment, the sequentially stacked interlayer insulating layers 114, 116, and 118 can be regarded as an insulating layer. For example, the interlayer insulating layer 114 covers the surfaces of the drain electrode 110, the source electrode 112, and the interlayer insulating layer 108. The interlayer insulating layer 116 is located between the interlayer insulating layers 114 and 118. In one embodiment, the material of the interlayer insulating layer 114 includes an inorganic dielectric material, which includes silicon oxide (eg, silicon oxide), silicon nitride (eg, silicon nitride), or a combination thereof. In an alternative embodiment, the material of the interlayer insulating layer 108 is the same as the material of the interlayer insulating layer 114. In other embodiments, the material of the interlayer insulating layer 108 is different from the material of the interlayer insulating layer 114. For example, the interlayer insulating layer 108 may be silicon oxide; the interlayer insulating layer 114 may be silicon nitride.

In one embodiment, the material of the interlayer insulating layer 116 includes an inorganic dielectric material, which includes silicon oxide (such as silicon oxide), silicon nitride (such as silicon nitride), or a combination thereof. In other embodiments, the material of the interlayer insulating layer 118 includes an organic dielectric material, which may be, for example, a photoresist material, acrylic resin, epoxy resin, polyimide resin, or a combination thereof. However, the present invention is not limited thereto. In other embodiments, the interlayer insulating layer 116 may also be an organic dielectric material; and the interlayer insulating layer 118 may also be an inorganic dielectric material.

As shown in FIG. 1, the electroluminescent element EL is disposed on the interlayer insulating layer 118 and is electrically connected to the active element AD to form a pixel P. The electroluminescent element EL includes a lower electrode 120, an electroluminescent layer 124, and an upper electrode 126, but the invention is not limited thereto. The lower electrode 120 is disposed on the interlayer insulating layer 118, and is electrically connected to the drain electrode 110 through contact holes (not shown) in the interlayer insulating layers 118, 116, and 114.

The pixel definition layer 122 is disposed on the lower electrode 120. As shown in FIG. 1, the pixel definition layer 122 has an accommodating portion 123 corresponding to the lower electrode 120. In one embodiment, the pixel definition layer 122 includes an organic dielectric material, an inorganic dielectric material, or a combination thereof. The organic dielectric material may be, for example, a photoresist material, acrylic resin, epoxy resin, polyimide resin, or a combination thereof. The inorganic dielectric material includes silicon oxide (such as silicon oxide), silicon nitride (such as silicon nitride), or a combination thereof.

At least a part of the electroluminescent layer 124 is disposed in the accommodating portion 123. In one embodiment, the electroluminescent layer 124 may include a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, and an electron injection layer that are sequentially stacked. However, the invention is not limited to this. In other embodiments, the configuration of the electroluminescent layer 124 can be adjusted or changed according to the design. The upper electrode 126 is disposed on the electroluminescent layer 124 and extends to cover the top surface of the pixel definition layer 122.

The pixel definition layer 122 further includes a trench 125, which is adjacent to the electroluminescent element EL. For example, the trench 125 penetrates the pixel definition layer 122 and the interlayer insulating layer 118 to expose the top surface of the interlayer insulating layer 116. Although the cross-sectional view 1 depicts two trenches 125 located on both sides of the electroluminescent element EL, the invention is not limited thereto. Referring to FIG. 1, a portion of the upper electrode 126 is filled into the trench 125. For example, the upper electrode 126 extends from the top surface of the electroluminescent layer 124 through the top surface of the pixel definition layer 122 and covers the trench 125 s surface. In an embodiment, the upper electrode 126 may be a transparent electrode.

As shown in FIG. 1, the encapsulation layer 130 is arranged on the upper electrode 126. The encapsulation layer 130 includes but is not limited to encapsulation materials 132, 134, 136. The packaging material 132 is completely formed on the substrate 100 and is filled (or filled) in the trench 125. The packaging material 134 is arranged between the packaging materials 132 and 136. In an embodiment, the materials of the packaging materials 132 and 136 include inorganic materials, such as silicon nitride, silicon oxide, silicon oxynitride, aluminum oxide, aluminum nitride, combinations thereof, or other suitable inorganic materials. The encapsulating material 134 includes organic materials, such as acrylate, methacrylate, acrylic acid, hexamethyldisiloxane (HMDSO), combinations thereof, or other suitable organic materials. Although the encapsulation layer 130 depicted in FIG. 1 only includes three layers of encapsulation materials 132, 134, and 136, the invention is not limited thereto. In other embodiments, the encapsulation layer 130 may include a stack of multiple inorganic materials and multiple organic materials.

In this embodiment, the encapsulation material 132 of the encapsulation layer 130 is filled into the trench 125 adjacent to the electroluminescent element EL, which can increase the lateral water and oxygen resistance of the display panel 10, thereby increasing the service life of the display panel 10 . In addition, since the groove 125 is provided as a part of the water-blocking oxygen structure in the display area (not labeled) where the multiple pixels P are located, it is not necessary to additionally provide a water-blocking oxygen structure in the peripheral area of the display panel 10 or The encapsulation layer 130 located in the peripheral area is designed to have a large enough width to block water and oxygen, so this embodiment can also achieve the effect of a narrow border.

In addition, the display panel 10 of this embodiment may optionally include a buffer layer 101. The buffer layer 101 is disposed between the substrate 100 and the active device AD. In an embodiment, the material of the buffer layer 101 may include silicon nitride, silicon oxide, silicon oxynitride, or a combination thereof.

2 is a schematic cross-sectional view of a display panel according to a second embodiment of the invention.

Referring to FIG. 2, the display panel 20 of the second embodiment is basically similar to the display panel 10 of the first embodiment. The materials and configurations of similar components have been described in the above paragraphs, and will not be repeated here. The difference between the above two is that the trench 225 of the display panel 20 of the second embodiment penetrates the pixel definition layer 122, the interlayer insulating layers 118, 116, 114, 108, the gate insulating layer 104 and the buffer layer 101 to expose The top surface of the substrate 100. A part of the upper electrode 126 is filled into the trench 225. A portion of the packaging material 132 of the packaging layer 130 is also filled (or filled) in the trench 225.

In this embodiment, the packaging material 132 filled in the trench 225 is used as a water-blocking oxygen structure, which can not only protect the electroluminescent element EL laterally, but also further protect the active element AD laterally to achieve a more comprehensive Sexual encapsulation.

In addition, the display panel 20 further includes circuit structures 210, 212, and 214 disposed under the substrate 100. For example, the circuit structure 210 is disposed on the bottom surface 100b of the substrate 100. The circuit structure 210 is electrically connected to the pump via contact holes (not labeled) in the substrate 100, the buffer layer 101, the gate insulating layer 104, and the interlayer insulating layer 108.极110. The circuit structure 212 is disposed on the bottom surface 100b of the substrate 100. The circuit structure 212 is electrically connected to the source electrode 112 through contact holes (not shown) in the substrate 100, the buffer layer 101, the gate insulating layer 104, and the interlayer insulating layer 108. The circuit structure 214 is disposed on the bottom surface 100 b. The circuit structure 214 is electrically connected to the active layer 102 through a contact hole (not labeled) in the substrate 100 and the buffer layer 101.

3 is a schematic cross-sectional view of a display panel according to a third embodiment of the invention.

Referring to FIG. 3, the display panel 30 of the third embodiment is basically similar to the display panel 10 of the first embodiment. The materials and configurations of similar components have been described in the above paragraphs, and will not be repeated here. The difference between the two is that a part of the packaging material 134 of the display panel 30 is also filled (or filled) in the trench 325. In other words, the encapsulation materials 132 and 134 filled in the trench 325 can be used as a water-blocking oxygen structure to protect the electroluminescent element EL laterally.

4 is a schematic cross-sectional view of a display panel according to a fourth embodiment of the invention.

Referring to FIG. 4, the display panel 40 of the fourth embodiment is basically similar to the display panel 20 of the second embodiment. The materials and configurations of similar components have been described in the above paragraphs, and will not be repeated here. The difference between the above two is that a part of the packaging material 134 of the display panel 40 is also filled (or filled) in the trench 425. In other words, the encapsulating materials 132 and 134 filled in the trench 425 can be used as a water-blocking oxygen structure to laterally protect the electroluminescent element EL and the active element AD.

5 is a schematic cross-sectional view of a display panel according to a fifth embodiment of the invention.

Referring to FIG. 5, the display panel 50 of the fifth embodiment is basically similar to the display panel 10 of the first embodiment. The materials and configurations of similar components have been described in the above paragraphs, and will not be repeated here. The difference between the two is that the display panel 50 includes two pixels P arranged on the substrate 100, and the opening 505 is arranged between two adjacent pixels P. For example, the opening 505 penetrates the pixel definition layer 122, the interlayer insulating layers 118, 116, 114, 108, the gate insulating layer 104, and the buffer layer 101 to expose the top surface of the substrate 100. In an embodiment, the opening 505, the accommodating portion 123, and the groove 125 may be formed at the same time. However, the present invention is not limited to this. In other embodiments, the opening 505, the accommodating portion 123, and the groove 125 may be formed separately. After the opening 505 is formed, the upper electrode 126 may be comprehensively formed on the substrate 100, and the encapsulation materials 132, 134 may be sequentially formed on the upper electrode 126. After the upper electrode 126 and the encapsulation materials 132 and 134 are filled into the opening 505, a part of the encapsulation material 134 is removed to expose the surface of the encapsulation material 132. In this case, as shown in FIG. 5, the packaging material 134 is divided into two parts 134a, 134b to be arranged on the pixels P, respectively. After the encapsulating materials 134a and 134b are formed, the encapsulating material 136 is formed on the substrate 100 in its entirety. As shown in FIG. 5, the encapsulating material 136 conformally covers the top surfaces and the side walls of the encapsulating materials 134 a and 134 b.

It is worth noting that, as shown in FIG. 5, the width of the opening 505 is greater than the width of the trench 125. The opening 505 may be an upper wide and narrow narrow opening. That is, the opening 505 has an upper portion 505a and a lower portion 505b, and the width of the upper portion 505a is greater than the width of the lower portion 505b. However, the present invention is not limited to this. In other embodiments, the width of the upper portion 505a may be equal to the width of the lower portion 505b to form an opening with a uniform width. In addition, the depth of the opening 505 is greater than the depth of the trench 125. However, the present invention is not limited to this. In other embodiments, the depth of the opening 505 may be equal to the depth of the trench 225 (as shown in FIG. 2).

In this embodiment, the trench 125 is located between the pixel P (or electroluminescence element EL) and the opening 505. To some extent, the encapsulation layer 130 filled in the trench 125 can be used as the first water-blocking oxygen structure; and the encapsulation layer 130 filled in the opening 505 can be used as the second water-blocking oxygen structure. In this case, as shown in FIG. 5, this dual water-blocking oxygen structure can further increase the lateral water-blocking oxygen capacity of the display panel 50, thereby increasing the service life of the display panel 50. On the other hand, if the display panel 50 is applied to a transparent display, the opening 505 also has the advantage of increasing the transparency of the display panel 50.

6 is a schematic top view of a display panel according to a sixth embodiment of the invention. For the sake of clarity, FIG. 6 only shows the pixel definition layer 122, the trench 125, the pixels P1 and P2 (or the electroluminescent elements EL1 and EL2), and the opening 605. For the arrangement relationship of other components, please refer to the section Figure 5.

Referring to FIG. 6, the groove 125 of the display panel 60 of the sixth embodiment may be a single annular groove, which surrounds a single pixel P1 or an electroluminescent element EL1. In addition, the groove 125 may be two annular grooves 125a, 125b, which surround a single pixel P1 or electroluminescent element EL1. However, the invention is not limited to this. The number and configuration of the grooves 125 can be adjusted according to actual needs. In other embodiments, the annular groove 125 may surround an array composed of a plurality of pixels P2 (or electroluminescent elements EL2). In an alternative embodiment, the two ring-shaped grooves 125a, 125b may also surround an array composed of a plurality of pixels P2 (or electroluminescent elements EL2). Although FIG. 6 only shows a 3×3 pixel array, the invention is not limited to this. The number and arrangement of pixels P2 (or EL2) can be adjusted according to actual needs.

It is worth noting that the opening 605 of the display panel 60 may be a ring-shaped opening or a grid-like opening, which surrounds the trench 125. Since the pixel definition layer 122, the interlayer insulating layers 118, 116, 114, 108, the gate insulating layer 104, and the buffer layer 101 in the opening 605 have been removed, the flexibility of the entire display panel 60 can be increased accordingly. In addition, the encapsulation layer 130 filled in the trench 125 and the encapsulation layer 130 filled in the opening 505 can be used as a dual water-blocking oxygen structure to increase the lateral water-blocking oxygen barrier capacity of the display panel 60, thereby improving the display panel 60 Service life.

7 is a schematic cross-sectional view of a display panel according to a seventh embodiment of the invention.

Referring to FIG. 7, the display panel 70 of the seventh embodiment is basically similar to the display panel 50 of the fifth embodiment. The materials and configurations of similar components have been described in the above paragraphs, and will not be repeated here. The difference between the two is that the opening 705 of the display panel 70 is filled with the encapsulating material 134 to further increase the lateral water and oxygen resistance of the display panel 70.

8 is a schematic cross-sectional view of a display panel according to an eighth embodiment of the present invention.

Referring to FIG. 8, the display panel 80 of the eighth embodiment is basically similar to the display panel 50 of the fifth embodiment. The materials and configurations of similar components have been described in the above paragraphs, and will not be repeated here. The difference between the above two is that a part of the packaging materials 136 and 132 of the display panel 80 and a part of the upper electrode 126 are further removed, and the opening 805 further exposes the top surface of the substrate 100. In this case, as shown in FIG. 8, the opening 805 includes an upper portion 805a, a lower portion 805b, and an intermediate portion 805c between the two. The width of the upper portion 805a is greater than the width of the middle portion 805c; and the width of the middle portion 805c is greater than the width of the lower portion 805b. However, the present invention is not limited to this. In other embodiments, the opening 805 may have a uniform width.

9 is a schematic top view of a display panel according to a ninth embodiment of the present invention.

Referring to FIG. 9, the display panel 90 of the ninth embodiment is basically similar to the display panel 60 of the sixth embodiment. The materials and configurations of similar components have been described in the above paragraphs, and will not be repeated here. The difference between the above two is that the groove 925 of the display panel 90 may be a straight groove 925a, 925b. For example, the straight strip-shaped groove 925a is located on both sides of a single pixel P1 or electroluminescent element EL1. That is, a single pixel P1 or electroluminescent element EL1 is located between the straight grooves 925a. In addition, the straight grooves 925b are located on both sides of the array composed of a plurality of pixels P2 (or electroluminescence elements EL2). That is to say, an array composed of a plurality of pixels P2 (or electroluminescence elements EL2) is located between the straight grooves 925b. Although the single side of the pixels P1 and P2 in FIG. 9 only shows two straight strip-shaped grooves 925a and 925b, the invention is not limited thereto. The number and configuration of the straight grooves 925a and 925b can be adjusted according to actual needs.

In addition, since the groove 925 of the display panel 90 is a straight strip-shaped groove, the opening 905 of the display panel 90 is also a straight strip-shaped opening, which is located beside the groove 925. Specifically, as shown in FIG. 9, the opening 905 is located between the pixel P1 and the array of pixels P2. The straight groove 925a is located between the opening 905 and the pixel P1; and the straight groove 925b is located between the opening 905 and the array of pixels P2.

10 is a schematic top view of a display panel according to a tenth embodiment of the present invention.

Referring to FIG. 10, the display panel 90' of the tenth embodiment is basically similar to the display panel 90 of the ninth embodiment. The materials and configurations of similar components have been described in the foregoing paragraphs, and will not be repeated here. The difference between the above two is that the straight groove 925a of the display panel 90' is a discontinuous straight groove, which is divided into two straight sub grooves 925a1, 925a2. The straight sub-groove 925a1 is located on both sides of the pixel P1a; the straight sub-groove 925a2 is located on both sides of the pixel P1b. The straight sub-grooves 925a1 and 925a2 are disconnected. In other words, the pixel definition layer 122 is disposed between the straight sub-trenches 925a1 and 925a2 to separate the two. Similarly, the straight strip groove 925b is also a discontinuous straight strip groove, which is divided into two straight strip sub-grooves 925b1, 925b2. The linear sub-groove 925b1 is located on both sides of the array formed by a plurality of pixels P2a; the linear sub-groove 925b2 is located on both sides of the array formed by a plurality of pixels P2b. The straight sub-grooves 925b1 and 925b2 are disconnected. In other embodiments, adjacent straight sub-grooves 925a1 and 925a2 may be connected to each other, and adjacent straight sub-grooves 925b1 and 925b2 may be connected to each other, but the invention is not limited thereto.

In summary, an embodiment of the present invention fills a portion of the encapsulation layer into the trench adjacent to the electroluminescent device to increase the lateral water and oxygen resistance of the display panel, thereby increasing the service life of the display panel. In another embodiment of the present invention, a plurality of openings through the pixel definition layer and the insulating layer may be formed in the active area to increase the flexibility of the display panel. In addition, another part of the encapsulation layer can also be filled into a plurality of openings, so as to further increase the water and oxygen resistance of the display panel.

Although the present invention has been disclosed as above with examples, it is not intended to limit the present invention. Any person with ordinary knowledge in the technical field can make some changes and modifications without departing from the spirit and scope of the present invention. The scope of protection of the present invention shall be subject to the scope defined in the appended patent application.

10, 20, 30, 40, 50, 60, 70, 80, 90, 90'‧‧‧ Display panel 100‧‧‧ Base 100b‧ The bottom surface of the base 101‧‧‧Buffer layer 102‧‧‧Active layer 104 ‧‧‧ Gate insulating layer 106‧‧‧ Gate 108, 114, 116, 118‧‧‧Interlayer insulating layer 110‧‧‧ Drain 112‧‧‧Source 120‧‧‧Lower electrode 122‧‧‧Pixel definition Layer 123‧‧‧Accommodation part 124‧‧‧Electroluminescent layer 125, 225, 325, 425, 925‧‧‧ Groove 125a, 125b‧‧‧Annular groove 126‧‧‧ Upper electrode 130‧‧‧ Packaging layers 132, 134, 134a, 134b, 136‧‧‧ packaging materials 210, 212, 214‧‧‧ circuit structure 505, 605, 705, 805, 905‧‧‧ opening 505a, 805a‧‧‧ opening upper 505b, 805b‧The lower part of the opening 805c‧‧‧The middle part of the opening 925a, 925b‧Straight strip grooves 925a1, 925a2, 925b1, 925b2‧‧‧Straight strip sub-groove AD‧‧‧Active elements EL, EL1 , EL2‧‧‧Electroluminescence elements P, P1, P1a, P1b, P2, P2a, P2b ‧‧‧ pixels

FIG. 1 is a schematic cross-sectional view of a display panel according to a first embodiment of the invention. 2 is a schematic cross-sectional view of a display panel according to a second embodiment of the invention. 3 is a schematic cross-sectional view of a display panel according to a third embodiment of the invention. 4 is a schematic cross-sectional view of a display panel according to a fourth embodiment of the invention. 5 is a schematic cross-sectional view of a display panel according to a fifth embodiment of the invention. 6 is a schematic top view of a display panel according to a sixth embodiment of the invention. 7 is a schematic cross-sectional view of a display panel according to a seventh embodiment of the invention. 8 is a schematic cross-sectional view of a display panel according to an eighth embodiment of the present invention. 9 is a schematic top view of a display panel according to a ninth embodiment of the present invention. 10 is a schematic top view of a display panel according to a tenth embodiment of the present invention.

10‧‧‧Display panel

100‧‧‧ base

101‧‧‧buffer layer

102‧‧‧Active layer

104‧‧‧Gate insulation

106‧‧‧Gate

108, 114, 116, 118 ‧‧‧ interlayer insulating layer

110‧‧‧ Jiji

112‧‧‧Source

120‧‧‧Lower electrode

122‧‧‧ pixel definition layer

123‧‧‧Accommodation Department

124‧‧‧Electroluminescence layer

125‧‧‧groove

130‧‧‧Encapsulation layer

132, 134, 136‧‧‧ packaging materials

AD‧‧‧Active components

EL‧‧‧Electroluminescence element

P‧‧‧ pixels

Claims (15)

A display panel includes: at least one active element on a substrate; an insulating layer on the at least one active element; a pixel definition layer on the insulating layer; at least one electroluminescent layer, at least a portion of which Located in at least one accommodating portion of the pixel definition layer, and electrically connected to the at least one active element to form at least one pixel, wherein at least one trench penetrates the pixel definition layer and is adjacent to the at least one electroluminescence A light-emitting layer; an upper electrode located on the at least one electroluminescent layer and at least a portion filled in the at least one trench; and a packaging layer located on the upper electrode and at least a portion of the packaging layer filled in the at least one In a groove. The display panel according to item 1 of the patent application scope, wherein the at least one trench substantially surrounds the at least one electroluminescent layer. The display panel according to item 1 of the patent application scope, wherein the number of the at least one electroluminescent layer is plural, and the at least one trench substantially surrounds the plurality of electroluminescent layers. The display panel according to item 1 of the patent application scope, wherein the at least one trench is straight and has a plurality of numbers, and the at least one electroluminescent layer is located between the trenches. The display panel according to item 1 of the patent application scope, wherein the at least one trench further penetrates the insulating layer. The display panel as described in item 5 of the patent application scope further includes a buffer layer between the substrate and the at least one active device, and the at least one trench further penetrates the buffer layer. The display panel as described in item 1 of the patent application further includes a circuit structure located below the substrate and electrically connected to the at least one active device. The display panel according to item 1 of the patent application scope, wherein the encapsulation layer includes a stacked layer composed of at least one inorganic material and at least one organic material. The display panel as described in item 1 of the patent application scope further includes at least a lower electrode located between the insulating layer and the at least one electroluminescent layer, which constitutes at least one electrode with the at least one electroluminescent layer and the upper electrode Luminescence element. The display panel as described in item 1 of the patent application scope further includes at least one opening penetrating the pixel definition layer and the insulating layer, the upper electrode and the encapsulation layer are filled into the at least one opening, wherein the at least one opening The width is greater than the width of the at least one trench. The display panel of claim 10, wherein the at least one opening surrounds the at least one groove. The display panel according to item 10 of the patent application scope, wherein the at least one opening is straight and is located beside the at least one groove. The display panel of claim 10, wherein the at least one opening exposes the top surface of the substrate. The display panel according to item 10 of the patent application scope, wherein the depth of the at least one groove is less than or equal to the depth of the at least one opening. The display panel of claim 10, wherein the at least one groove is located between the at least one pixel and the at least one opening.

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