TWI671928B - Display panel - Google Patents

Abstract

A display panel includes the following elements. At least one active element is located on the substrate. The insulating layer is on the at least one active device. The pixel definition layer is located on the insulation 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 device to form at least one pixel. At least one trench runs through the pixel definition layer and is adjacent to the electroluminescent layer. The upper electrode is located on the at least one electroluminescent layer and at least a part of the upper electrode is filled in the at least one trench. The encapsulation layer is located on the upper electrode, and at least a portion of the encapsulation layer fills at least one trench.

Description

Display panel

The present invention relates to a display panel, and more 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 light emitting devices such as indicator lights and display panels. Since the organic electroluminescent device has characteristics such as no viewing angle problem and full color, it meets the requirements of the display characteristics of the multimedia era and is expected to become the mainstream of flat panel displays.

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

An embodiment of the present invention provides a display panel in which a part of the encapsulation layer is filled into a trench adjacent to the electroluminescent element, so as to increase the lateral water and oxygen blocking ability of the display panel, thereby improving 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 a packaging layer. At least one active element is located on the substrate. The insulating layer is on the at least one active device. The pixel definition layer is located on the insulation 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 device to form at least one pixel. At least one trench runs through the pixel defining layer and is adjacent to the at least one electroluminescent layer. The upper electrode is located on the at least one electroluminescent layer and at least a part of the upper electrode is filled in the at least one trench. The encapsulation layer is located on the upper electrode, and at least a portion of the encapsulation layer fills at least one trench.

Based on the above, an embodiment of the present invention fills a part of the encapsulation layer into a trench adjacent to the electroluminescent element to increase the lateral water and oxygen blocking ability of the display panel, thereby improving the service life of the display panel. According to another embodiment of the present invention, a plurality of openings penetrating the pixel definition layer and the insulation 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 the plurality of openings, so as to further increase the water and oxygen blocking ability of the display panel.

In order to make the above features and advantages of the present invention more comprehensible, embodiments are hereinafter described in detail with reference to the accompanying drawings.

The invention is explained more fully with reference to the drawings of this embodiment. However, the present invention may be embodied in various forms and should not be limited to the embodiments described herein. The thicknesses of layers and regions in the drawings are 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 present invention.

Referring to FIG. 1, a first embodiment of the present invention provides a display panel 10 including 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 Capsulation layer 130. In an embodiment, the material of the substrate 100 may be an inorganic transparent material (such as glass, quartz, other suitable materials, and combinations thereof), an organic transparent material (such as polyolefin, polyfluorene, polyalcohol, polyester, Rubber, thermoplastic polymer, thermosetting polymer, polyaromatic hydrocarbon, polymethylpropionate, polycarbonate, other suitable materials, derivatives thereof and combinations thereof) or a combination thereof.

As shown in FIG. 1, the active element AD is located on a 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 material includes, but is not limited to, a silicon-based semiconductor material (such as polycrystalline silicon), an oxide-based semiconductor material (such as indium oxide, tin oxide, zinc oxide, indium gallium zinc oxide, etc.), or a combination thereof.

The gate insulation layer 104 is disposed on the active layer 102 to cover the surfaces of the active layer 102 and the substrate 100. In one embodiment, the material of the gate insulating layer 104 includes an oxide of silicon (such as silicon oxide), a nitride of silicon (such as silicon nitride), or a combination thereof. Although FIG. 1 illustrates only a single layer of the gate insulating layer 104, the present invention is not limited thereto. In other embodiments, the gate insulation layer 104 may have a two-layer structure or a multi-layer structure. In an alternative embodiment, when the gate insulation layer 104 is a two-layer structure, it may include different materials.

The gate electrode 106 is disposed on the gate insulating layer 104 such that the gate insulating layer 104 is located between the active layer 102 and the gate electrode 106. In one embodiment, the gate electrode 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 electrode 106 to cover the surfaces of the gate electrode 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 an oxide of silicon (such as silicon oxide), a nitride of silicon (such as silicon nitride), or a combination thereof.

The drain electrode 110 and the source electrode 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 material of the drain electrode 110 and the source electrode 112 includes a conductive material including 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 insulation layers 114, 116, and 118 are sequentially disposed on the drain electrode 110 and the source electrode 112. In an embodiment, the inter-layer insulation layers 114, 116, and 118 sequentially stacked can be regarded as an insulation layer. For example, the interlayer insulating layer 114 covers the surfaces of the drain 110, the source 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 an oxide of silicon (such as silicon oxide), a nitride of silicon (such as 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 an embodiment, the material of the interlayer insulating layer 116 includes an inorganic dielectric material, which includes an oxide of silicon (such as silicon oxide), a nitride of silicon (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, an acrylic resin, an epoxy resin, a polyimide resin, or a combination thereof. However, the present invention is not limited to this. 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 labeled) 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 a receiving 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, an acrylic resin, an epoxy resin, a polyimide resin, or a combination thereof. The inorganic dielectric material includes an oxide of silicon (such as silicon oxide), a nitride of silicon (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 present invention is not limited thereto. 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 insulation layer 118 to expose the top surface of the interlayer insulation layer 116. Although the cross-sectional view of FIG. 1 shows that the two trenches 125 are respectively located on two sides of the electroluminescent element EL, the present invention is not limited thereto. Referring to FIG. 1, a part of the upper electrode 126 is filled in the trench 125. For example, the upper electrode 126 extends from the top surface of the electroluminescent layer 124 and covers the trench 125 through the top surface of the pixel definition layer 122. s surface. In one embodiment, the upper electrode 126 may be a transparent electrode.

As shown in FIG. 1, the packaging layer 130 is disposed on the upper electrode 126. The packaging layer 130 includes, but is not limited to, packaging materials 132, 134, and 136. The packaging material 132 is comprehensively formed on the substrate 100 and fills (or fills) the trenches 125. The sealing material 134 is disposed between the sealing materials 132 and 136. In one 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, a combination thereof, or other suitable inorganic materials. The packaging material 134 includes an organic material, such as acrylate, methacrylate, acrylic acid, hexamethyldisiloxane (HMDSO), a combination thereof, or other suitable organic materials. Although the packaging layer 130 shown in FIG. 1 includes only three layers of packaging materials 132, 134, and 136, the present invention is not limited thereto. In other embodiments, the encapsulation layer 130 may include a stacked layer composed of a plurality of inorganic materials and a plurality of organic materials.

In this embodiment, the encapsulation material 132 of the encapsulation layer 130 is filled in the trench 125 adjacent to the electroluminescent element EL, which can increase the lateral water and oxygen blocking ability of the display panel 10, thereby improving the service life of the display panel 10. . In addition, since a groove 125 is provided as a part of the water blocking oxygen structure in the display area (not labeled) where multiple pixels P are located, there is no need to additionally provide a water blocking oxygen structure or surround the display panel 10. The encapsulation layer 130 located in the peripheral area is designed to have a sufficiently large width to block water and oxygen, so this embodiment can also achieve the effect of a narrow frame.

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 one embodiment, the material of the buffer layer 101 may include silicon nitride, silicon oxide, silicon oxynitride, or a combination thereof.

FIG. 2 is a schematic cross-sectional view of a display panel according to a second embodiment of the present 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 insulation layers 118, 116, 114, 108, the gate insulation 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 in the trench 225. A portion of the encapsulation material 132 of the encapsulation layer 130 is also filled (or filled) in the trench 225.

In this embodiment, the encapsulation material 132 filling 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 drain via the contact holes (not labeled) in the substrate 100, the buffer layer 101, the gate insulation layer 104, and the interlayer insulation layer 108.极 110。 The pole 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 labeled) in the substrate 100, the buffer layer 101, the gate insulation layer 104, and the interlayer insulation 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 the contact holes (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 present 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 above two is that a part of the packaging material 134 of the display panel 30 is also filled (or filled) in the trench 325. That is, the packaging materials 132 and 134 filling 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 present 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 packaging materials 132 and 134 filling the trench 425 can be used as a water blocking oxygen structure to protect the electroluminescent element EL and the active element AD laterally.

FIG. 5 is a schematic cross-sectional view of a display panel according to a fifth embodiment of the present 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 above two are different in that the display panel 50 includes two pixels P disposed on the substrate 100, and the opening 505 is disposed between two adjacent pixels P. For example, the opening 505 penetrates the pixel definition layer 122, the interlayer insulation layers 118, 116, 114, 108, the gate insulation layer 104, and the buffer layer 101 to expose the top surface of the substrate 100. In one embodiment, the opening 505, the accommodating portion 123, and the groove 125 may be formed simultaneously. However, the present invention is not limited thereto. 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 can be formed on the substrate 100 in a comprehensive manner, and packaging materials 132 and 134 can be sequentially formed on the upper electrode 126. After the upper electrode 126 and the packaging materials 132 and 134 are filled in the opening 505, a part of the packaging material 134 is removed to expose the surface of the packaging material 132. In this case, as shown in FIG. 5, the packaging material 134 is divided into two portions 134 a and 134 b to be disposed on the pixels P, respectively. After the packaging materials 134 a and 134 b are formed, the packaging material 136 is formed on the substrate 100 in a comprehensive manner. As shown in FIG. 5, the packaging material 136 conformally covers the top surfaces and sidewalls of the packaging 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 lower 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 larger than the width of the lower portion 505b. However, the present invention is not limited thereto. In other embodiments, the width of the upper portion 505a may be equal to the width of the lower portion 505b, so as 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 groove 225 (as shown in FIG. 2).

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

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

Referring to FIG. 6, the groove 125 of the display panel 60 according to the sixth embodiment may be a single annular groove that surrounds a single pixel P1 or an electroluminescent element EL1. In addition, the trench 125 may be two annular trenches 125a, 125b that surround a single pixel P1 or the electroluminescent element EL1. However, the present invention is not limited thereto, and the number and configuration of the trenches 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 the electroluminescent element EL2). In an alternative embodiment, the two annular grooves 125a, 125b may also surround an array composed of a plurality of pixels P2 (or the electroluminescent element EL2). Although FIG. 6 only illustrates a 3 × 3 pixel array, the present invention is not limited thereto. The number and arrangement of the pixels P2 (or the electroluminescent element 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 filling the trench 125 and the encapsulation layer 130 filling the opening 505 can be used as a double water-blocking oxygen structure to increase the lateral oxygen-blocking ability of the display panel 60, thereby improving the display panel 60's Service life.

FIG. 7 is a schematic cross-sectional view of a display panel according to a seventh embodiment of the present 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 above two is that the opening 705 of the display panel 70 is filled with the packaging material 134 to further increase the lateral water and oxygen blocking ability of the display panel 70.

FIG. 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 above two are different in that a part of the packaging material 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 therebetween. The width of the upper portion 805a is larger than the width of the middle portion 805c; and the width of the middle portion 805c is larger than the width of the lower portion 805b. However, the present invention is not limited thereto. In other embodiments, the opening 805 may have a uniform width.

FIG. 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 grooves 925 of the display panel 90 may be straight grooves 925a, 925b. For example, the straight grooves 925a are located on both sides of a single pixel P1 or the electroluminescent element EL1. That is, a single pixel P1 or the electroluminescent element EL1 is located between the straight grooves 925a. In addition, the straight grooves 925b are located on both sides of an array composed of a plurality of pixels P2 (or the electroluminescent element EL2). That is, an array composed of a plurality of pixels P2 (or the electroluminescent element EL2) is located between the straight grooves 925b. Although the two sides of the pixels P1 and P2 in FIG. 9 only show two straight grooves 925a and 925b, the present invention is not limited thereto. The number and configuration of the straight grooves 925a, 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 an array formed by a plurality 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 an array formed by a plurality of pixels P2.

FIG. 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 above 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-grooves 925a1 are located on both sides of the pixel P1a; the straight sub-grooves 925a2 are located on both sides of the pixel P1b. The straight sub-grooves 925a1, 925a2 are disconnected. That is, the pixel definition layer 122 is disposed between the straight sub-grooves 925a1 and 925a2 to separate the two. Similarly, the straight groove 925b is also a discontinuous straight groove, which is divided into two straight sub-grooves 925b1, 925b2. The straight sub-grooves 925b1 are located on both sides of an array formed by a plurality of pixels P2a; the straight sub-grooves 925b2 are located on both sides of an array formed by a plurality of pixels P2b. The straight sub-grooves 925b1, 925b2 are disconnected. In other embodiments, the adjacent straight sub-grooves 925a1, 925a2 may be connected to each other, and the adjacent straight sub-grooves 925b1, 925b2 may be connected to each other, but the present invention is not limited thereto.

In summary, in one embodiment of the present invention, a part of the encapsulation layer is filled into a trench adjacent to the electroluminescent element to increase the lateral water and oxygen blocking ability of the display panel, thereby improving the service life of the display panel. According to another embodiment of the present invention, a plurality of openings penetrating 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 the plurality of openings, so as to further increase the water and oxygen blocking ability of the display panel.

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

10, 20, 30, 40, 50, 60, 70, 80, 90, 90’‧‧‧ display panel

100‧‧‧ substrate

100b‧‧‧ Underside of the base

101‧‧‧ buffer layer

102‧‧‧Active Level

104‧‧‧Gate insulation

106‧‧‧Gate

108, 114, 116, 118‧‧‧ interlayer insulation

110‧‧‧ Drain

112‧‧‧Source

120‧‧‧ lower electrode

122‧‧‧Pixel Definition Layer

123‧‧‧accommodation department

124‧‧‧electroluminescent layer

125, 225, 325, 425, 925‧‧‧ groove

125a, 125b‧‧‧Circular groove

126‧‧‧up electrode

130‧‧‧Encapsulation layer

132, 134, 134a, 134b, 136‧‧‧ packaging materials

210, 212, 214‧‧‧ line structure

505, 605, 705, 805, 905‧‧‧ opening

505a, 805a‧ upper part of opening

505b, 805b‧‧‧ lower part of opening

805c‧‧‧ opening middle

925a, 925b‧‧‧Straight groove

925a1, 925a2, 925b1, 925b2

AD‧‧‧Active Components

EL, EL1, EL2‧‧‧ electroluminescence element

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

Claims (31)

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 insulation layer, wherein at least one opening penetrates the pixel definition layer And the insulating layer, the at least one opening exposes the top surface of the substrate; at least a portion of the electroluminescent layer is located in at least a receiving portion of the pixel definition layer, and is electrically connected to the at least one active portion The element constitutes at least one pixel, wherein at least one groove runs through the pixel definition layer and is adjacent to the at least one electroluminescent layer; an upper electrode is located on the at least one electroluminescent layer and at least a portion is filled in the A trench; and a packaging layer on the upper electrode, and at least a portion of the packaging layer is filled in the at least one trench. The display panel according to item 1 of the scope of patent application, wherein the at least one groove substantially surrounds the at least one electroluminescent layer. The display panel according to item 1 of the scope of patent application, wherein the number of the at least one electroluminescent layer is plural, and the at least one groove substantially surrounds the plurality of electroluminescent layers. The display panel according to item 1 of the scope of patent application, wherein the at least one groove is straight and the number of the grooves is plural, and the at least one electroluminescent layer is located between the grooves. The display panel according to item 1 of the scope of patent application, wherein the at least one trench further penetrates the insulation layer. The display panel according to item 5 of the scope of patent application, further comprising a buffer layer located between the substrate and the at least one active device, and the at least one groove runs through the buffer layer. The display panel described in item 1 of the patent application scope 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 according to item 1 of the scope of patent application, further comprising at least a lower electrode between the insulating layer and the at least one electroluminescent layer, and the at least one electroluminescent layer and the upper electrode constitute at least one electro Electroluminescent element. The display panel according to item 1 of the scope of patent application, wherein the upper electrode and the encapsulation layer are filled in the at least one opening, and a width of the at least one opening is greater than a width of the at least one trench. The display panel as described in claim 10, wherein the at least one opening surrounds the at least one groove. The display panel according to item 10 of the scope of patent application, wherein the at least one opening is straight and located beside the at least one groove. The display panel as described in claim 10, wherein a depth of the at least one groove is less than or equal to a depth of the at least one opening. The display panel as described in claim 10, wherein the at least one groove is located between the at least one pixel and the at least one opening. 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 part of which Is located in at least one accommodating portion of the pixel definition layer and is electrically connected to the at least one active element to form at least one pixel, wherein at least one groove runs through the pixel definition layer and is adjacent to the at least one electrical In the light-emitting layer, the at least one groove is straight and the number thereof is plural and the number of the at least one pixel is plural. Each of the grooves extends along an arrangement direction of the pixels. The at least one electro A light emitting layer is located between the trenches; an upper electrode is located on the at least one electroluminescent layer and at least a portion is filled in the at least one trench; and a packaging layer is located on the upper electrode and the packaging layer At least a portion of the opening is filled in the at least one trench, at least one opening penetrates the pixel definition layer and the insulating layer, the upper electrode and the encapsulation layer are filled in the at least one opening, and the width of the at least one opening is larger than the At least one ditch Width, the at least one opening extends along the arrangement direction of the pixels, the openings are straight and located beside the at least one groove, wherein the grooves are located between the pixels and the at least one opening between. The display panel according to item 15 of the scope of patent application, wherein the at least one trench further penetrates the insulation layer. The display panel according to item 16 of the scope of patent application, further comprising a buffer layer located between the substrate and the at least one active device, and the at least one groove runs through the buffer layer. The display panel according to item 15 of the scope of patent application, wherein the packaging layer includes a stacked layer composed of at least one inorganic material and at least one organic material. The display panel according to item 15 of the scope of patent application, further comprising at least a lower electrode located between the insulating layer and the at least one electroluminescent layer, and the at least one electroluminescent layer and the upper electrode constitute at least one electric Electroluminescent element. The display panel according to item 15 of the scope of patent application, wherein the at least one opening exposes a top surface of the substrate. The display panel according to item 15 of the patent application, wherein a depth of the at least one groove is less than or equal to a depth of the at least one opening. The display panel according to item 15 of the patent application, wherein an edge length of the at least one groove or the at least one opening is greater than an edge length of the at least one pixel and less than an edge length of a display area. 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 part of which Is located in at least one accommodating portion of the pixel definition layer and is electrically connected to the at least one active element to form at least one pixel, wherein at least one groove runs through the pixel definition layer and is adjacent to the at least one electrical A light-emitting layer, the number of the at least one pixel is plural, the at least one groove is ring-shaped and substantially surrounds the plurality of pixels; an upper electrode is located on the at least one electroluminescent layer and at least a part is filled in the In at least one trench; and an encapsulation layer on the upper electrode, and at least a portion of the encapsulation layer is filled in the at least one trench, wherein at least one opening penetrates the pixel definition layer and the insulation layer, the top The electrode and the encapsulation layer are filled in the at least one opening. The width of the at least one opening is greater than the width of the at least one trench. The at least one opening surrounds the at least one trench. The at least one trench is located in the at least one pixel. Between the at least one opening. The display panel according to item 23 of the scope of patent application, wherein the number of the at least one groove is plural. The display panel according to item 23 of the scope of patent application, wherein the at least one trench further penetrates the insulation layer. The display panel according to item 25 of the scope of patent application, further comprising a buffer layer located between the substrate and the at least one active device, and the at least one groove runs through the buffer layer. The display panel according to item 23 of the scope of patent application, wherein the packaging layer includes a stacked layer composed of at least one inorganic material and at least one organic material. The display panel according to item 23 of the scope of patent application, further comprising at least a lower electrode located between the insulating layer and the at least one electroluminescent layer, and the at least one electroluminescent layer and the upper electrode constitute at least one electric Electroluminescent element. The display panel according to item 23 of the patent application, wherein the at least one opening exposes a top surface of the substrate. The display panel according to item 23 of the patent application, wherein a depth of the at least one groove is less than or equal to a depth of the at least one opening. The display panel according to item 23 of the patent application, wherein an edge length of the at least one groove or the at least one opening is greater than an edge length of the at least one pixel and less than an edge length of a display area.