TWI752442B - Organic light emitting display device - Google Patents

Abstract

An organic light emitting display device including a substrate, a first insulating layer, an anode, a hole transport layer, an organic light emitting layer, an electron transport layer, a transparent conductive layer, and a protective layer is provided. The first insulating layer is disposed on the substrate. The anode is disposed on the first insulating layer. The hole transport layer is disposed on the anode. The organic light emitting layer is disposed on the hole transport layer. The electron transport layer is disposed on the organic light emitting layer. The transparent conductive layer is disposed on the electron transport layer. The protective layer is disposed on the transparent conductive layer.

Description

Organic Light Emitting Display Device

The present invention relates to a light-emitting display device, and more particularly, to an organic light-emitting display device.

Generally, display devices using inorganic semiconductor light-emitting diodes have very poor light uniformity across the entire surface. And even if sub-millimeter light-emitting diodes (Mini LEDs) are used, there will still be problems of yield and cost of mass transfer in manufacturing.

The organic light-emitting display device is a light-emitting element using a light-emitting organic compound, which has the characteristics of wide viewing angle, high reaction speed, ultra-thin, etc., which makes the application range of the organic light-emitting display device more and more extensive.

The present invention provides an organic light-emitting display device, which is relatively simple and low in cost.

The organic light emitting display device of the present invention includes a substrate, a first insulating layer, an anode, a hole transport layer, an organic light emitting layer, an electron transport layer, a transparent conductive layer and a protective layer. The first insulating layer is on the substrate. The anode is on the first insulating layer. A hole transport layer is located on the anode. The organic light-emitting layer is on the hole transport layer. The electron transport layer is on the organic light emitting layer. The transparent conductive layer is on the electron transport layer. The protective layer is on the transparent conductive layer.

In an embodiment of the present invention, the substrate is a metal plate.

In an embodiment of the present invention, the substrate is a plain substrate, and the anode and the transparent conductive layer are not electrically connected to the substrate.

In an embodiment of the present invention, the first insulating layer completely covers the substrate, and the first insulating layer does not have via holes.

In an embodiment of the present invention, the organic light emitting display device further includes a circuit layer, a second insulating layer and an anode via hole. The wiring layer is on the first insulating layer. The second insulating layer is located on the substrate, and the anode is further located on the second insulating layer. The anode through hole penetrates through the second insulating layer, and the anode is electrically connected to the circuit layer through the anode through hole.

In an embodiment of the present invention, the organic light emitting display device further includes a third insulating layer. The third insulating layer is located on the substrate and covers the anode, the hole transport layer, the organic light-emitting layer, the electron transport layer and the transparent conductive layer.

In an embodiment of the present invention, the substrate has a substrate surface, and in a first direction perpendicular to the substrate surface, the anode, the hole transport layer, the organic light emitting layer, the electron transport layer and the transparent conductive layer overlap.

In an embodiment of the present invention, in the second direction parallel to the surface of the substrate, the anode, the hole transport layer, the organic light emitting layer, the electron transport layer and the transparent conductive layer overlap.

In an embodiment of the present invention, the organic light emitting display device further includes a cathode. The cathode is located on the substrate and is electrically connected to the transparent conductive layer. The substrate has a substrate surface, and in a first direction perpendicular to the substrate surface, the anode does not overlap the cathode.

In an embodiment of the present invention, the organic light emitting display device further includes a filter layer. The filter layer is on the protective layer.

In an embodiment of the present invention, the organic light emitting display device further includes a light conversion layer. The light conversion layer is on the protective layer.

Based on the above, the organic light-emitting display device of the present invention can be relatively simple in structure or manufacturing method and low in cost.

The present invention will be described more fully hereinafter with reference to the drawings of various embodiments. However, the present invention may be embodied in various forms and should not be limited to the embodiments described herein. The thicknesses of layers or regions in the drawings may be exaggerated for clarity. The same or similar reference numerals denote the same or similar elements, and the repeated descriptions will not be repeated in the following paragraphs. In addition, the directional terms mentioned in the embodiments, such as: up, down, left, right, front or rear, etc., only refer to the directions of the attached drawings. Accordingly, the directional terms used are illustrative and not limiting of the present invention.

1A is a partial cross-sectional schematic diagram of an organic light emitting display device according to the first embodiment of the present invention. 1B is a schematic partial top view of an organic light-emitting display device according to the first embodiment of the present invention. Moreover, for the sake of clarity, some mold layers or components may be omitted from the drawings in FIGS. 1A and 1B . For example, only the anode 141 , the cathode 142 , the organic light-emitting layer 160 and the substrate 110 of the organic light-emitting display device 100 are schematically shown in FIG. 1B .

1A and 1B , the organic light emitting display device 100 includes a substrate 110 , a first insulating layer 121 , an anode 141 , a hole transport layer 150 , an organic light emitting layer 160 , an electron transport layer 170 , a transparent conductive layer 180 and a protective layer 191 . The substrate 110 has a substrate surface 110a. The first insulating layer 121 is located on the substrate surface 110 a of the substrate 110 . The anode 141 is located on the first insulating layer 121 . The hole transport layer 150 is on the anode 141 . The organic light emitting layer 160 is on the hole transport layer 150 . The electron transport layer 170 is on the organic light emitting layer 160 . The transparent conductive layer 180 is located on the electron transport layer 170 . The protective layer 191 is located on the transparent conductive layer 180 .

In this embodiment, the substrate 110 may be a metal plate. The metal plate has better wear resistance, bendability or heat dissipation. Therefore, the stability and heat dissipation of the organic light emitting display device 100 can be improved.

In this embodiment, the substrate 110 may be a bare substrate. For example, the substrate 110 may be a bulk metal plate. In other words, the substrate 110 does not have any electronic components (eg, active components, passive components and wires). That is, the organic light-emitting display device 100 may be a passive light-emitting display device.

In this embodiment, the first insulating layer 121 may cover the substrate 110 in a comprehensive manner, and the first insulating layer 121 does not have a via hole.

In one embodiment, the first insulating layer 121 may be composed of inorganic materials, including: silicon _{oxide (SiO x} ), silicon nitride (SiN _x ), silicon oxynitride (SiON), aluminum oxide (AlO _x ) , aluminum oxynitride (AlON), other analogs or a combination of the above. In one embodiment, the first insulating layer 121 may be formed of an organic material, including: polyimide (PI), polycarbonate (PC), polyamide (PA), Polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyethyleneimine (PEI), polyurethane (PU), polyethylene Siloxane (polydimethylsiloxane, PDMS), acrylic (acrylate) such as polymethylmethacrylate (polymethylmethacrylate, PMMA), etc., ether (ether) polymer such as polyethersulfone (polyethersulfone, PES) or Polyetheretherketone (PEEK), etc., polyolefin (polyolefin), other analogs, or a combination of the above. In one embodiment, the aforementioned one or more organic materials and/or the aforementioned one or more inorganic materials may be stacked to form the first insulating layer 121 . The first insulating layer 121 is first formed on the base substrate 110 , so that any electronic components subsequently formed on the first insulating layer 121 may not be electrically connected to the substrate 110 .

In the embodiment shown in FIG. 1A , the first insulating layer 121 is shown in the form of a single mold layer, but the present invention is not limited thereto. In other embodiments, the first insulating layer 121 may be formed by stacking multiple mold layers.

In this embodiment, the organic light emitting display device 100 may further include a cathode 142 . The cathode 142 is located on the substrate 110 and is electrically connected to the transparent conductive layer 180 .

In this embodiment, the anode 141 or the cathode 142 may be formed on the first insulating layer 121 . That is, the first insulating layer 121 may be located between the anode 141 and the substrate 110 , or the first insulating layer 121 may be located between the cathode 142 and the substrate 110 .

In this embodiment, the material of the anode 141 and the material of the cathode 142 are basically the same, but the present invention is not limited thereto. In this embodiment, the thickness of the anode 141 is substantially the same as the thickness of the cathode 142, but the present invention is not limited thereto. In addition, based on the consideration of electrical conductivity, the anode 141 and the cathode 142 are generally made of metal materials (eg, copper), but the present invention is not limited thereto. Compared with metal oxide conductive materials that can transmit light, metal materials are not light-transmitting but have better conductivity.

For example, a conductive layer can be formed on the first insulating layer 121 by sputtering or evaporation, and then a part of the conductive layer can be removed by etching to form the anode 141 or the cathode 142 . For another example, the anode 141 or the cathode 142 on the first insulating layer 121 can be formed by screen printing. In other words, the anode 141 and the cathode 142 can be formed by the same steps. Therefore, the material and thickness of the anode 141 and the cathode 142 can be basically the same, and the fabrication is relatively simple. Also, the anode 141 does not overlap the cathode 142 in the first direction D1 perpendicular to the substrate surface 110a.

The material or the formation method of the hole transport layer 150 can be adaptively adjusted according to requirements, which will not be described in detail here, and is not limited in the present invention. For example, the material of the hole transport layer 150 may include N,N'-bis(naphthalene-1-yl)-N,N'-diphenylbiphenyl-4,4'-diamine (N,N' -bis(1-naphthyl)-N,N'-diphenyl-1,1'-biphenyl-4,4'-diamine; NPB), N,N'-bis(1-naphthyl)-N,N'- Bis(4-methylphenyl)-1,1'-biphenyl-4,4'diamine (N,N'-bis(1-naphthyl)-N,N'-di(4-methylphenyl)-1 ,1'-biphenyl-4,4'-diamine; NTB) or N,N'-bis(1-naphthyl)-N,N'-bis(4-tert-butylphenyl)-1,1'- Biphenyl-4,4'diamine (N,N'-bis(1-naphthyl)-N,N'-di(4-tert-butylphenyl)-1,1'-biphenyl-4,4'-diamine; NBB), but the present invention is not limited thereto. For another example, the hole transport layer 150 can be formed by, for example, evaporation, spraying, coating, printing or other possible methods.

The material or the formation method of the organic light emitting layer 160 can be adaptively adjusted according to requirements, which will not be described in detail here, and is not limited in the present invention. For example, the material of the organic light-emitting layer 160 may include a common organic light-emitting diode compound (organic light-emitting diode compound; OLED compound). For another example, the organic light-emitting layer 160 can be formed by, for example, evaporation, spraying, coating, printing or other possible methods.

The material or the formation method of the electron transport layer 170 can be adaptively adjusted according to requirements, which will not be repeated here, and is not limited in the present invention. For example, the material of the electron transport layer 170 may include 8-hydroxyquinoline aluminum ((8-hydroxyquinoline) aluminum; AlQ) or its derivative compound (eg: bis(8-hydroxyquinoline)aluminum-acetylacetonate (Alq ₂ -Acac) or tris(8-hydroxyquinoline)aluminum (Alq ₃ )), but the present invention is not limited thereto. For another example, the electron transport layer 170 can be formed by, for example, evaporation, spraying, coating, printing or other possible methods.

In this embodiment, the hole transport layer 150 may include a first hole transport layer 151, a second hole transport layer 152, and a third hole transport layer 153, and the organic light emitting layer 160 may include a first organic light emitting layer 161, a second hole transport layer 152, and a third hole transport layer 153. The second organic light emitting layer 162 and the third organic light emitting layer 163 , and/or the electron transport layer 170 may include a first electron transport layer 171 , a second electron transport layer 172 and a third electron transport layer 173 . The first organic light emitting layer 161 may be located between the first hole transport layer 151 and the first electron transport layer 171 . The second organic light emitting layer 162 may be located between the second hole transport layer 152 and the second electron transport layer 172 . The third organic light emitting layer 163 may be located between the third hole transport layer 153 and the third electron transport layer 173 .

In this embodiment, the material of the first organic light emitting layer 161 , the material of the second organic light emitting layer 162 and the material of the third organic light emitting layer 163 may be different from each other. For example, the material of the first organic light emitting layer 161 may include a material capable of emitting red light, the material of the second organic light emitting layer 162 may include a material capable of emitting green light, and the material of the third organic light emitting layer 163 may include a material capable of emitting blue light material, but the present invention is not limited to this. In this embodiment, the material of the first hole transport layer 151 and/or the material of the first electron transport layer 171 can be adjusted according to the material of the first organic light emitting layer 161 , and the material of the second hole transport layer 152 And/or the material of the second electron transport layer 172 can be adjusted according to the material of the second organic light emitting layer 162, and the material of the third hole transport layer 153 and/or the material of the third electron transport layer 173 The materials of the three organic light-emitting layers 163 are adjusted accordingly.

The material of the transparent conductive layer 180 may include metal oxide. For example, the material of the transparent conductive layer 180 may include Gallium-Zinc Oxide (GZO), Indium-Gallium-Zinc Oxide (IGZO), Indium-Tin Oxide (ITO) , indium-zinc oxide (Indium-Zinc Oxide; IZO), tin oxide (SnO), zinc oxide (ZnO), zinc-tin oxide (Zinc-Tin Oxide; ZTO), other suitable oxides or a stack of at least two of the above Floor. The transparent conductive layer 180 can be formed by sputtering or other possible methods, for example.

In this embodiment, the organic light emitting display device 100 may further include a third insulating layer 123 . The third insulating layer 123 is located on the substrate 110 . The third insulating layer 123 may cover the first insulating layer 121 , the anode 141 , the hole transport layer 150 , the organic light emitting layer 160 , the electron transport layer 170 and the transparent conductive layer 180 .

In this embodiment, the third insulating layer 123 may cover the anode 141 , the hole transport layer 150 , the organic light emitting layer 160 , the electron transport layer 170 and the transparent conductive layer 180 laterally. That is, the third insulating layer 123 may laterally cover the side of the anode 141 , the side of the hole transport layer 150 , the side of the organic light emitting layer 160 , the side of the electron transport layer 170 and the side of the transparent conductive layer 180 side.

In this embodiment, the third insulating layer 123 may cover the top surface of the first insulating layer 121 .

In this embodiment, the third insulating layer 123 may further cover the cathode 142 . For example, the third insulating layer 123 may cover the cathode 142 more laterally.

In this embodiment, the material or formation method of the third insulating layer 123 may be the same or similar to the material or formation method of the first insulating layer 121 , but the present invention is not limited thereto.

In a possible embodiment, the third insulating layer 123 may include an air gap, but the invention is not limited thereto.

In this embodiment, the protection layer 191 may be further located on the third insulating layer 123 . In the embodiment shown in FIG. 1A , the protective layer 191 is shown in the form of a single mold layer, but the present invention is not limited thereto. In other embodiments, the protective layer 191 may be formed by stacking multiple mold layers.

For example, the protective layer 191 may include an optical grade insulating film, an inorganic or organic insulating film, an optical film, a hard coat film, a water vapor blocking film with a low water vapor transmission rate (WVTR) A film, an oxygen barrier film with low Oxygen Transmission Rate (OTR), or a laminate or combination of one or more of the foregoing film layers.

In this embodiment, the anode 141 , the hole transport layer 150 , the organic light emitting layer 160 , the electron transport layer 170 and the transparent conductive layer 180 overlap in the first direction D1 perpendicular to the substrate surface 110 a.

In this embodiment, in the first direction D1 perpendicular to the substrate surface 110a, the cathode 142 may not overlap any of the anode 141, the hole transport layer 150, the organic light emitting layer 160 and the electron transport layer 170, but this The invention is not limited to this.

In this embodiment, the anode 141 , the hole transport layer 150 , the organic light emitting layer 160 , the electron transport layer 170 and the transparent conductive layer 180 overlap in the second direction D2 parallel to the substrate surface 110 a.

In this embodiment, in the second direction D2 parallel to the substrate surface 110a, the anode 141, the hole transport layer 150, the organic light emitting layer 160, the electron transport layer 170, the transparent conductive layer 180 and the cathode 142 may overlap.

2 is a partial cross-sectional schematic diagram of an organic light emitting display device according to a second embodiment of the present invention. In the present embodiment, the organic light-emitting display device 200 is similar to the organic light-emitting display device 100 of the previous embodiment, and the similar components are denoted by the same reference numerals, and have similar functions, materials or formation methods, and the description is omitted.

Referring to FIG. 2 , in this embodiment, the organic light emitting display device 200 may include a substrate 110 , a first insulating layer 121 , an anode 141 , a hole transport layer 150 , an organic light emitting layer 160 , an electron transport layer 170 , and a transparent conductive layer 180 , a protective layer 191 and a filter layer 292 . The filter layer 292 is located on the protective layer 191 .

In the embodiment shown in FIG. 2 , only one filter layer 292 is shown, but the present invention is not limited thereto. In one embodiment, the number of the filter layers 292 may be multiple, the multiple filter layers 292 may or may not overlap, and the colors of the multiple filter layers 292 may be the same or different.

In one embodiment, if the emission color of the organic light emitting layer 160 has a wide range, the organic light emitting display device 200 can have different emission colors in different regions by means of a plurality of filter layers 292 of different colors. .

3 is a partial cross-sectional schematic diagram of an organic light emitting display device according to a third embodiment of the present invention. In this embodiment, the organic light-emitting display device 300 is similar to the organic light-emitting display device 100 of the previous embodiment, and similar components are denoted by the same reference numerals, and have similar functions, materials or formation methods, and descriptions thereof are omitted.

Referring to FIG. 3 , in this embodiment, the organic light-emitting display device 300 may include a substrate 110 , a first insulating layer 121 , an anode 141 , a hole transport layer 150 , an organic light-emitting layer 160 , an electron transport layer 170 , and a transparent conductive layer 180 , the protective layer 191 and the light conversion layer 393 . The light conversion layer 393 is on the protective layer 191 . The material of the light conversion layer 393 may include one or more of quantum dot (quantum dot; QD), upconversion (upconversion) material or downconversion (downconversion) material. In one embodiment, the light conversion layer 393 can absorb the light emitted by the organic light emitting layer 160 and emit light of other colors different from the emission color of the organic light emitting layer 160 .

In the embodiment shown in FIG. 3 , only one light conversion layer 393 is shown, but the present invention is not limited thereto. In one embodiment, the number of the light conversion layers 393 may be multiple, the multiple light conversion layers 393 may overlap or not, and the materials or compositions of the multiple light conversion layers 393 may be the same or different.

In one embodiment, the organic light-emitting display device 300 can have different light-emitting colors in different regions by a plurality of light conversion layers 393 having different materials or compositions.

4 is a partial cross-sectional schematic diagram of an organic light emitting display device according to a fourth embodiment of the present invention. In this embodiment, the organic light emitting display device 400 is similar to the organic light emitting display device 100 of the previous embodiment, and similar components are denoted by the same reference numerals, and have similar functions, materials or formation methods, and descriptions thereof are omitted.

Referring to FIG. 4 , in this embodiment, the organic light emitting display device 400 may include a substrate 110 , a first insulating layer 121 , a circuit layer 431 , a second insulating layer 422 , an anode 141 , an anode via 443 , and a hole transport layer 150 , an organic light-emitting layer 160 , an electron transport layer 170 , a transparent conductive layer 180 and a protective layer 191 . The wiring layer 431 is located on the first insulating layer 121 . The second insulating layer 422 is located on the substrate 110 . The anode 141 may be further located on the second insulating layer 422 . The anode via 443 penetrates through the second insulating layer 422 . The anode 141 can be electrically connected to the corresponding circuit in the circuit layer 431 through the anode via 443 .

In this embodiment, the material or formation method of the second insulating layer 422 may be the same or similar to the material or formation method of the first insulating layer 121 , but the present invention is not limited thereto.

In this embodiment, the organic light emitting display device 400 may further include a cathode via 444 and a cathode 142 . The cathode 142 may be further located on the second insulating layer 422 . The cathode via 444 penetrates through the second insulating layer 422 . The cathode 142 can be electrically connected to the corresponding circuit in the circuit layer 431 through the cathode via 444 .

In this embodiment, the circuits in the circuit layer 431 can be adjusted according to the design requirements, which are not limited in the present invention. For example, in the wiring layer 431, the wiring electrically connected to the anode 141 and the wiring electrically connected to the cathode 142 are electrically separated from each other.

In this embodiment, the organic light emitting display device 400 may further include a third insulating layer 423 . The third insulating layer 423 is located on the substrate 110 . The third insulating layer 423 may cover the first insulating layer 121 , the second insulating layer 422 , the anode 141 , the cathode 142 , the hole transport layer 150 , the organic light emitting layer 160 , the electron transport layer 170 and the transparent conductive layer 180 . For example, the third insulating layer 423 may penetrate through the second insulating layer 422 to cover the first insulating layer 121 .

In this embodiment, the material or formation method of the third insulating layer 423 may be the same or similar to the material or formation method of the third insulating layer 123 in the foregoing embodiments, but the present invention is not limited thereto.

In a possible embodiment, the third insulating layer 423 may include an air gap, but the present invention is not limited thereto.

In this embodiment, the protection layer 191 may be further located on the third insulating layer 423 .

5 is a partial cross-sectional schematic diagram of an organic light emitting display device according to a fifth embodiment of the present invention. In this embodiment, the organic light-emitting display device 500 is similar to the organic light-emitting display device 100 of the previous embodiment, and the similar components are denoted by the same reference numerals and have similar functions, materials, or formation methods, and descriptions thereof are omitted.

Referring to FIG. 5 , in this embodiment, the organic light emitting display device 500 includes a substrate 110 , a first insulating layer 121 , a circuit layer 431 , a second insulating layer 522 , an anode 141 , an anode via 443 , a cathode 142 , and a cathode via 444 , the hole transport layer 150 , the organic light-emitting layer 160 , the electron transport layer 170 , the transparent conductive layer 180 , the third insulating layer 523 and the protective layer 191 . The wiring layer 431 is located on the first insulating layer 121 . The second insulating layer 522 is located on the substrate 110 . The anode 141 may be further located on the second insulating layer 522 . The anode via 443 penetrates through the second insulating layer 522 . The anode 141 can be electrically connected to the corresponding circuit in the circuit layer 431 through the anode via 443 .

In this embodiment, the third insulating layer 523 is located on the substrate 110 . The third insulating layer 523 may cover the second insulating layer 522 , the anode 141 , the cathode 142 , the hole transport layer 150 , the organic light emitting layer 160 , the electron transport layer 170 and the transparent conductive layer 180 .

In this embodiment, the third insulating layer 523 and the first insulating layer 121 can be separated from each other at least by the second insulating layer 522 .

In this embodiment, the material or formation method of the third insulating layer 523 may be the same or similar to the material or formation method of the third insulating layer 123 or the third insulating layer 423 in the foregoing embodiments, but the invention is not limited thereto.

6 is a partial cross-sectional schematic diagram of an organic light emitting display device according to a sixth embodiment of the present invention. In this embodiment, the organic light-emitting display device 600 is similar to the organic light-emitting display device 100 of the previous embodiment, and the similar components are denoted by the same reference numerals, and have similar functions, materials or formation methods, and the description is omitted.

Referring to FIG. 6 , in this embodiment, the organic light emitting display device 600 may include a substrate 110 , a first insulating layer 121 , an anode 641 , a hole transport layer 650 , an organic light emitting layer 660 , an electron transport layer 670 , and a transparent conductive layer 680 and the protective layer 191 . The anode 641 is located on the first insulating layer 121 . The hole transport layer 650 is on the anode 641 . The organic light emitting layer 660 is on the hole transport layer 650 . The electron transport layer 670 is on the organic light emitting layer 660 . The transparent conductive layer 680 is on the electron transport layer 670 . The protective layer 191 is on the transparent conductive layer 680 .

In this embodiment, the material or the formation method of the anode 641 may be the same or similar to the material or formation method of the anode 141 in the previous embodiment, and the material or formation method of the hole transport layer 650 may be the same or similar to that of the previous embodiment. The material or formation method of the hole transport layer 150, the material or formation method of the organic light emitting layer 660 can be the same or similar to the material or formation method of the organic light emitting layer 160 in the previous embodiment, and the material or formation method of the electron transport layer 670 can be the same or similar. Similar to the material or formation method of the electron transport layer 170 in the previous embodiment, the material or formation method of the transparent conductive layer 680 can be the same or similar to the material or formation method of the transparent conductive layer 180 in the previous embodiment, so it will not be repeated here. .

In this embodiment, the hole transport layer 650 may include a first hole transport layer 651, a second hole transport layer 652 and a third hole transport layer 653, and the organic light emitting layer 660 may include a first organic light emitting layer 661, a second hole transport layer 652, and a third hole transport layer 653. The second organic light emitting layer 662 and the third organic light emitting layer 663 , and the electron transport layer 670 may include a first electron transport layer 671 , a second electron transport layer 672 and a third electron transport layer 673 . The first organic light emitting layer 661 is located between the first hole transport layer 651 and the first electron transport layer 671 . The second organic light emitting layer 662 is located between the second hole transport layer 652 and the second electron transport layer 672 . The third organic light emitting layer 663 is located between the third hole transport layer 653 and the third electron transport layer 673 .

In this embodiment, the material of the first organic light emitting layer 661 , the material of the second organic light emitting layer 662 and the material of the third organic light emitting layer 663 may be different from each other. For example, the material of the first organic light emitting layer 661 may include a material capable of emitting red light, the material of the second organic light emitting layer 662 may include a material capable of emitting green light, and the third organic light emitting layer 663 may include a material capable of emitting blue light material, but the present invention is not limited to this. In this embodiment, the material of the first hole transport layer 651 and/or the material of the first electron transport layer 671 can be adjusted according to the material of the first organic light emitting layer 661 , and the material of the second hole transport layer 652 And/or the material of the second electron transport layer 672 can be adjusted according to the material of the second organic light emitting layer 662, and the material of the third hole transport layer 653 and/or the material of the third electron transport layer 673 can be adjusted according to the material of the third hole transport layer 653. The materials of the three organic light-emitting layers 663 are adjusted accordingly.

In this embodiment, the organic light emitting display device 600 may further include a third insulating layer 623 . The third insulating layer 623 is located on the substrate 110 . The third insulating layer 623 may cover the first insulating layer 121 , the anode 641 , the hole transport layer 650 , the organic light emitting layer 660 , the electron transport layer 670 and the transparent conductive layer 680 .

In this embodiment, the third insulating layer 623 may laterally cover the anode 641 , the hole transport layer 650 , the organic light emitting layer 660 , the electron transport layer 670 and the transparent conductive layer 680 . That is, the third insulating layer 623 may laterally cover the side of the anode 641 , the side of the hole transport layer 650 , the side of the organic light emitting layer 660 , the side of the electron transport layer 670 and the side of the transparent conductive layer 680 . side.

In this embodiment, the third insulating layer 623 may cover the top surface of the first insulating layer 121 .

In this embodiment, the material or formation method of the third insulating layer 623 may be the same or similar to the material or formation method of the third insulating layer 123 or the third insulating layer 423 in the foregoing embodiments, and thus will not be described herein again.

In this embodiment, the protection layer 191 may be further located on the third insulating layer 623 .

In this embodiment, in the first direction D1 perpendicular to the substrate surface 110a, the anode 641, the hole transport layer 650, the organic light emitting layer 660, the electron transport layer 670 and the transparent conductive layer 680 overlap.

In this embodiment, in the second direction D2 parallel to the substrate surface 110a, the anode 641, the hole transport layer 650, the organic light emitting layer 660, the electron transport layer 670 and the transparent conductive layer 680 may not overlap.

7 is a partial cross-sectional schematic diagram of an organic light emitting display device according to a seventh embodiment of the present invention. In this embodiment, the organic light-emitting display device 700 is similar to the organic light-emitting display device 600 of the previous embodiment, and similar components are denoted by the same reference numerals, and have similar functions, materials, or formation methods, and descriptions thereof are omitted.

Referring to FIG. 7 , in this embodiment, the organic light emitting display device 700 may include a substrate 110 , a first insulating layer 721 , an anode 641 , a hole transport layer 650 , an organic light emitting layer 660 , an electron transport layer 670 , and a transparent conductive layer 680 , the third insulating layer 623 and the protective layer 191 . The first insulating layer 721 is located on the substrate surface 110 a of the substrate 110 . The anode 641 is located on the first insulating layer 721 .

In this embodiment, the material of the first insulating layer 721 may be the same as or similar to the material of the first insulating layer 121 in the foregoing embodiments, and thus will not be repeated here.

In this embodiment, the first insulating layer 721 may be a patterned insulating layer. That is, the first insulating layer 721 may not fully cover the substrate 110 .

In this embodiment, the third insulating layer 623 may cover the first insulating layer 721 more laterally. In this embodiment, the third insulating layer 623 may further cover the substrate surface 110 a of the substrate 110 .

8 is a partial cross-sectional schematic diagram of an organic light emitting display device according to an eighth embodiment of the present invention. In this embodiment, the organic light emitting display device 800 is similar to the organic light emitting display device 700 of the previous embodiment, and the similar components are denoted by the same reference numerals, and have similar functions, materials or formation methods, and the description is omitted.

Referring to FIG. 8 , in this embodiment, the organic light emitting display device 800 may include a substrate 110 , a first insulating layer 121 , a circuit layer 431 , a second insulating layer 822 , an anode 641 , an anode via 443 , and a hole transport layer 650 , an organic light-emitting layer 660 , an electron transport layer 670 , a transparent conductive layer 680 , a third insulating layer 623 and a protective layer 191 . The wiring layer 431 is located on the first insulating layer 121 . The second insulating layer 822 is located on the substrate 110 . The anode 641 may be further located on the second insulating layer 822 . The anode via 443 penetrates through the second insulating layer 822 . The anode 641 can be electrically connected to the corresponding circuit in the circuit layer 431 through the anode via 443 .

In this embodiment, the third insulating layer 623 may cover the circuit layer 431 and the second insulating layer 822 more laterally.

9 is a partial cross-sectional schematic diagram of an organic light emitting display device according to a ninth embodiment of the present invention. In the present embodiment, the organic light-emitting display device 900 is similar to the organic light-emitting display device 700 of the previous embodiment, and the similar components are denoted by the same reference numerals and have similar functions, materials or formation methods, and the description is omitted.

Referring to FIG. 9 , in this embodiment, the organic light emitting display device 900 may include a substrate 110 , a first insulating layer 121 , a circuit layer 431 , a second insulating layer 922 , an anode 641 , an anode via 443 , and a hole transport layer 650 , an organic light-emitting layer 660 , an electron transport layer 670 , a transparent conductive layer 680 , a third insulating layer 923 and a protective layer 191 . The second insulating layer 922 is located on the substrate 110 .

In this embodiment, the third insulating layer 923 is located on the substrate 110 . The third insulating layer 923 may cover the second insulating layer 922 , the anode 641 , the hole transport layer 650 , the organic light emitting layer 660 , the electron transport layer 670 and the transparent conductive layer 680 .

In this embodiment, the third insulating layer 923 and the first insulating layer 121 can be separated from each other at least by the second insulating layer 922 .

In some not-shown embodiments, the features of the above-described embodiments may be combined. For example, in some not-shown embodiments, the filter layer 292 that is the same or similar to the second embodiment can be configured on the organic light-emitting display device that is the same or similar to the previous embodiments (eg, the same or similar on the protective layer 191 of the organic light-emitting display devices 300, 400, 500, 600, 700, 800, and 900). For another example, in some not-shown embodiments, the light conversion layer 393 that is the same or similar to the third embodiment can be configured on the organic light emitting display device that is the same or similar to the previous embodiments (eg, the same or similar to On the protective layer 191 of the organic light-emitting display devices similar to the organic light-emitting display devices 200, 400, 500, 600, 700, 800, 900).

To sum up, the organic light emitting display device of the present invention can be relatively simple in structure or manufacturing method, and the cost is relatively low.

Although the present invention has been disclosed above by the embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the technical field can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, The protection scope of the present invention shall be determined by the scope of the appended patent application.

100, 200, 300, 400, 500, 600, 700, 800, 900: organic light-emitting display devices 110: Substrate 110a: Substrate surface 121, 721: the first insulating layer 431: circuit layer 422, 522, 822, 922: the second insulating layer 141, 641: Anode 443: Anode via hole 150, 650: hole transport layer 151, 651: The first hole transport layer 152, 652: The second hole transport layer 153, 653: The third hole transport layer 160, 660: organic light-emitting layer 161, 661: the first organic light-emitting layer 162, 662: the second organic light-emitting layer 163, 663: The third organic light-emitting layer 170, 670: electron transport layer 171, 671: The first electron transport layer 172, 672: Second electron transport layer 173, 673: The third electron transport layer 180, 680: transparent conductive layer 142: Cathode 444: Cathode Via 191: Protective Layer 123, 423, 523, 623, 923: the third insulating layer 292: filter layer 393: Light Conversion Layer D1: first direction D2: Second direction

1A is a partial cross-sectional schematic diagram of an organic light emitting display device according to the first embodiment of the present invention. 1B is a schematic partial top view of an organic light-emitting display device according to the first embodiment of the present invention. 2 is a partial cross-sectional schematic diagram of an organic light emitting display device according to a second embodiment of the present invention. 3 is a partial cross-sectional schematic diagram of an organic light emitting display device according to a third embodiment of the present invention. 4 is a partial cross-sectional schematic diagram of an organic light emitting display device according to a fourth embodiment of the present invention. 5 is a partial cross-sectional schematic diagram of an organic light emitting display device according to a fifth embodiment of the present invention. 6 is a partial cross-sectional schematic diagram of an organic light emitting display device according to a sixth embodiment of the present invention. 7 is a partial cross-sectional schematic diagram of an organic light emitting display device according to a seventh embodiment of the present invention. 8 is a partial cross-sectional schematic diagram of an organic light emitting display device according to an eighth embodiment of the present invention. 9 is a partial cross-sectional schematic diagram of an organic light emitting display device according to a ninth embodiment of the present invention.

100: Organic Light Emitting Display Device 110: Substrate 110a: Substrate surface 121: first insulating layer 141: Anode 150: hole transport layer 151: The first hole transport layer 152: Second hole transport layer 153: Third hole transport layer 160: organic light-emitting layer 161: the first organic light-emitting layer 162: the second organic light-emitting layer 163: The third organic light-emitting layer 170: electron transport layer 171: The first electron transport layer 172: Second electron transport layer 173: The third electron transport layer 180: transparent conductive layer 142: Cathode 191: Protective Layer 123: The third insulating layer D1: first direction D2: Second direction

Claims (9)

An organic light-emitting display device, comprising: a substrate; a first insulating layer on the substrate; an anode on the first insulating layer; a hole transport layer on the anode; and an organic light-emitting layer on the a hole transport layer; an electron transport layer, located on the organic light-emitting layer; a transparent conductive layer, located on the electron transport layer; a protective layer, located on the transparent conductive layer; a circuit layer, located on the first insulating layer layer; a second insulating layer on the substrate, and the anode is further on the second insulating layer; and an anode via hole penetrating the second insulating layer, and the anode is connected by the anode The via hole is electrically connected to the circuit layer. The organic light emitting display device of claim 1, wherein the substrate is a metal plate. The organic light-emitting display device according to claim 1, wherein the substrate is a plain substrate, and the anode and the transparent conductive layer are not electrically connected to the substrate. The organic light emitting display device according to claim 1, wherein the first insulating layer fully covers the substrate, and the first insulating layer has no via holes. The organic light-emitting display device of claim 1, further comprising: a third insulating layer on the substrate and covering the anode, the hole transport layer, the organic light-emitting layer, the electron transport layer and the the transparent conductive layer. The organic light emitting display device of claim 1, wherein the substrate has a substrate surface, and in a first direction perpendicular to the substrate surface, the anode, the hole transport layer, the organic light emitting layer , the electron transport layer and the transparent conductive layer overlap. The organic light-emitting display device of claim 6, wherein in a second direction parallel to the surface of the substrate, the anode, the hole transport layer, the organic light-emitting layer, the electron transport layer and the The transparent conductive layers overlap. The organic light-emitting display device according to claim 1, further comprising: a cathode located on the substrate and electrically connected to the transparent conductive layer, wherein the substrate has a substrate surface, and is perpendicular to the substrate surface In the first direction, the anode does not overlap with the cathode. The organic light emitting display device according to claim 1, further comprising: a filter layer on the protective layer; and/or a light conversion layer on the protective layer.

Images