Organic light-emitting display panel and display device

Abstract

The present application discloses an organic light-emitting display panel and a display device, relating to the field of display technologies, and having a relatively high luminous brightness. The organic light-emitting display panel includes a substrate and a plurality of pixel structures arrayed on the substrate. Each sub-pixel structure in each pixel includes a cathode, an electron injection layer, an electron transport layer, a light-emitting layer, a hole transport layer, a hole injection layer, and an anode that are sequentially arranged side by side on the substrate. Taking the direction perpendicular to the substrate as the height direction and the direction parallel to the substrate as the width direction, the heights of the cathode, the electron injection layer, the electron transport layer, the light-emitting layer, the hole transport layer, the hole injection layer, and the anode are respectively greater than the widths of the cathode, the electron injection layer, the electron transport layer, the light-emitting layer, the hole transport layer, the hole injection layer, and the anode.

Description

Technical Field

[0001] This application relates to the field of display technologies, and in particular, to an organic light-emitting display panel and a display device. Background Art

[0002] An organic light-emitting diode (OLED, also known as organic electroluminescent display) display screen uses self-luminous organic electroluminescent diodes and does not require a backlight source. It has excellent characteristics such as high contrast, thin thickness, wide viewing angle, fast response speed, can be used for flexible panels, wide operating temperature range, and simple structure and manufacturing process. OLED display screens are becoming more and more common in people's lives.

[0003] In an OLED display screen, the luminous brightness of a pixel depends on the magnitude of the applied current. The greater the current, the higher the brightness of the light. However, because the light-emitting material used in the OLED display screen is an organic substance, the greater the current, the faster the aging rate, and there are also significant differences in the aging rates of materials of different colors, which seriously affects the quality of the product. Therefore, the luminous brightness of the product is severely limited. Summary of the Invention

[0004] The purpose of this application is to provide an organic light-emitting display panel and a display device to improve the luminous brightness of the product.

[0005] This application discloses an organic light-emitting display panel, which includes a substrate and a plurality of pixel structures arrayed on the substrate. Each sub-pixel structure in each pixel includes a cathode, an electron injection layer, an electron transport layer, a light-emitting layer, a hole transport layer, a hole injection layer, and an anode that are arranged in parallel on the substrate in sequence. Taking the direction perpendicular to the substrate as the height direction and the direction parallel to the substrate as the width direction, the heights of the cathode, the electron injection layer, the electron transport layer, the light-emitting layer, the hole transport layer, the hole injection layer, and the anode are respectively greater than the widths of the cathode, the electron injection layer, the electron transport layer, the light-emitting layer, the hole transport layer, the hole injection layer, and the anode.

[0006] Optionally, the pixel includes a red sub-pixel structure, a green sub-pixel structure, and a blue sub-pixel structure. The width of the light-emitting layer in the blue sub-pixel structure is greater than or equal to the width of the light-emitting layer in the green sub-pixel structure, and the width of the light-emitting layer in the green sub-pixel structure is greater than or equal to the width of the light-emitting layer in the red sub-pixel structure.

[0007] Optionally, the pixel includes a red sub-pixel structure, a green sub-pixel structure, and a blue sub-pixel structure. The light-emitting layers in the red sub-pixel structure, the green sub-pixel structure, and the blue sub-pixel structure are all annular structures. The light-emitting layer in the green sub-pixel structure surrounds the light-emitting layer in the red sub-pixel structure, and the light-emitting layer in the blue sub-pixel structure surrounds the light-emitting layer in the green sub-pixel structure.

[0008] Optionally, the organic light-emitting display panel further includes a reflective layer. The reflective layer is disposed on the substrate, and the cathode, the electron injection layer, the electron transport layer, the light-emitting layer, the hole transport layer, the hole injection layer, and the anode are disposed side by side on the reflective layer.

[0009] Optionally, both the cathode and the anode are made of a transparent conductive material.

[0010] Optionally, the height of the light-emitting layer is higher than the heights of the cathode, the electron injection layer, the electron transport layer, the hole transport layer, the hole injection layer, and the anode. The light-emitting layer includes a first light-emitting segment and a second light-emitting segment connected to each other. The first light-emitting segment is disposed between the electron transport layer and the hole transport layer, and the second light-emitting segment is disposed on the cathode, the electron injection layer, the electron transport layer, the first light-emitting segment, the hole transport layer, the hole injection layer, and the anode.

[0011] Optionally, in any two adjacent sub-pixel structures of the organic light-emitting display panel, the cathode, the electron injection layer, the electron transport layer, the light-emitting layer, the hole transport layer, the hole injection layer, and the anode in one of the sub-pixel structures are disposed side by side in a first direction, and the cathode, the electron injection layer, the electron transport layer, the light-emitting layer, the hole transport layer, the hole injection layer, and the anode in the other sub-pixel structure are disposed side by side in a second direction. Wherein, the first direction and the second direction are perpendicular to each other, and both the cathode and the anode are made of a metal material.

[0012] Optionally, the organic light-emitting display panel further includes a packaging layer. The packaging layer is made of a transparent and insulating material, is disposed on a side of the pixel away from the substrate, and fills a gap between adjacent sub-pixel structures.

[0013] Optionally, one of the cathode or the anode is made of a metal material, and the other is made of a transparent conductive material.

[0014] The present application also discloses a display device, which includes a driving circuit and the organic light-emitting display panel as described above. The driving circuit is used to drive the organic light-emitting display panel.

[0015] Compared with the solution of stacking the cathode, electron injection layer, electron transport layer, light-emitting layer, hole transport layer, hole injection layer, and anode in the sub-pixel structure of the OLED panel in sequence from bottom to top, in this application, the cathode, electron injection layer, electron transport layer, light-emitting layer, hole transport layer, hole injection layer, and anode are arranged side by side on the substrate. Compared with the original horizontally extended light-emitting layer, the light-emitting layer in this application is less restricted in the direction perpendicular to the substrate, and can achieve a larger size and volume, so that the current resistance ability of the light-emitting layer is higher and the light output brightness is higher; moreover, the light emitted by the light-emitting layer will not be blocked by the hole injection layer, hole transport layer, and anode on the light output side of the organic light-emitting display panel, and will not affect the light transmittance. Therefore, the light output brightness of the organic light-emitting display panel can be further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings included are used to provide a further understanding of the embodiments of the present application, which form a part of the specification, are used to illustrate the embodiments of the present application, and are used to explain the principles of the present application together with the text description. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. In the drawings:

[0017] Figure 1 is a cross-sectional schematic diagram of an organic light-emitting display panel provided by the present application;

[0018] Figure 2 is a cross-sectional schematic diagram of an organic light-emitting display panel provided by the first embodiment of the present application;

[0019] Figure 3 is a plan schematic diagram of an organic light-emitting display panel provided by the first embodiment of the present application;

[0020] Figure 4 is a plan schematic diagram of an organic light-emitting display panel provided by the second embodiment of the present application;

[0021] Figure 5 is a cross-sectional schematic diagram of an organic light-emitting display panel provided by the third embodiment of the present application;

[0022] Figure 6 is a cross-sectional schematic diagram of an organic light-emitting display panel provided by the fourth embodiment of the present application;

[0023] Figure 7 is a cross-sectional schematic diagram of an organic light-emitting display panel provided by the fifth embodiment of the present application;

[0024] Figure 8 is a schematic diagram of a display device provided by the present application.

[0025] Among them, 10 is a display device; 20 is a driving circuit; 30 is an organic light-emitting display panel; 100 is a substrate; 200 is a pixel; 200a is a red sub-pixel structure; 200b is a green sub-pixel structure; 200c is a blue sub-pixel structure; 210 is a cathode; 220 is an electron injection layer; 230 is an electron transport layer; 240 is a light-emitting layer; 241 is a first light-emitting segment; 242 is a second light-emitting segment; 250 is a hole transport layer; 260 is a hole injection layer; 270 is an anode; 280 is a reflective layer; 290 is a packaging layer. Detailed implementation manners

[0026] It should be understood that the terms, specific structures and functional details disclosed herein are only for describing specific embodiments, which are representative. However, the present application can be specifically implemented in many alternative forms and should not be construed as being limited only to the embodiments set forth herein.

[0027] The present application will be described in detail below with reference to the accompanying drawings and optional embodiments.

[0028] Currently, in order to ensure the light-emitting brightness of sub-pixels, there are mainly two aspects to solve: one is that the light-emitting material areas of sub-pixels of different colors are set differently, and the area of the material with a short lifespan is made larger; the other is to increase the driving current to improve the light-emitting brightness of sub-pixels. However, the above methods are all limited by the display area / product resolution or material characteristics, and it is impossible to infinitely increase the area or drive with too high a current, thus severely limiting the light-emitting brightness of the product. Based on this, from the perspective of increasing the light-emitting material area of sub-pixels, the present application provides an organic light-emitting display panel and a display device to improve the light-emitting brightness of the product.

[0029] As Figure 1 shown, the present application provides an organic light-emitting display panel, including a substrate 100 and a plurality of pixels 200 arrayed on the substrate 100. The sub-pixel structure in each pixel 200 includes a cathode 210, an electron injection layer 220, an electron transport layer 230, a light-emitting layer 240, a hole transport layer 250, a hole injection layer 260, and an anode 270 that are sequentially arranged side by side on the substrate 100. Taking the direction perpendicular to the substrate 100 as the height direction and the direction parallel to the substrate 100 as the width direction, the heights of the cathode 210, the electron injection layer 220, the electron transport layer 230, the light-emitting layer 240, the hole transport layer 250, the hole injection layer 260, and the anode 270 are respectively greater than the widths of the cathode 210, the electron injection layer 220, the electron transport layer 230, the light-emitting layer 240, the hole transport layer 250, the hole injection layer 260, and the anode 270.

[0030] Compared with the scheme in which the cathode 210, electron injection layer 220, electron transport layer 230, light-emitting layer 240, hole transport layer 250, hole injection layer 260, and anode 270 in the sub-pixel structure are stacked in sequence from bottom to top, in this application, the cathode 210, electron injection layer 220, electron transport layer 230, light-emitting layer 240, hole transport layer 250, hole injection layer 260, and anode 270 are arranged side by side on the substrate 100. Compared with the original horizontally extended light-emitting layer 240, the light-emitting layer 240 in this application is less restricted in the direction perpendicular to the substrate 100, and can achieve a larger size and volume, so that the current withstand capacity of the light-emitting layer 240 is higher and the light output brightness is higher; and the light emitted by the light-emitting layer 240 will not be blocked by the hole injection layer 260, hole transport layer 250, and anode 270 on the light output side of the organic light-emitting display panel 30, and will not affect the light transmittance. Therefore, the light output brightness of the organic light-emitting display panel 30 can be further improved.

[0031] Based on the method of increasing the volume of the light-emitting layer 240, in addition to increasing the height of the light-emitting layer 240 in the direction perpendicular to the substrate 100, the width or length of the light-emitting layer 240 can also be increased in the direction parallel to the substrate 100. The shape of the light-emitting layer 240 can specifically be made into a square, a circle, or other shapes.

[0032] Furthermore, since the lifetimes of different color light-emitting materials are different, in order to improve the service life of the light-emitting materials and the organic light-emitting display panel 30 in this application, by increasing the volume of the light-emitting layer 240 of the light-emitting material with a short lifetime and reducing the magnitude of the current passing through it, its service life is extended. Specifically, taking the organic light-emitting display panel 30 with three sub-pixel colors of red, green, and blue as an example, in this application, the following specific embodiment designs are provided to increase the volume of the light-emitting layer 240 of the light-emitting material with a short lifetime.

[0033] Embodiment 1:

[0034] As Figure 2 shown, it is a cross-sectional schematic diagram of an organic light-emitting display panel. As the first embodiment provided in this application, the pixel 200 includes a red sub-pixel structure 200a, a green sub-pixel structure 200b, and a blue sub-pixel structure 200c. Among them, the width of the light-emitting layer 240 in the blue sub-pixel structure 200c is greater than the width of the light-emitting layer 240 in the green sub-pixel structure 200b, and the width of the light-emitting layer 240 in the green sub-pixel structure 200b is greater than the width of the light-emitting layer 240 in the red sub-pixel structure 200a.

[0035] In an OLED panel, the light-emitting materials can be classified into two types, fluorescent materials and phosphorescent materials, according to the types of luminescent excitons. The luminous efficiency of each type is different. Generally, the red light efficiency is 11 cd / A and the lifespan is as high as 160,000 hours; the green light efficiency can reach 30 cd / A and the lifespan is 60,000 hours; while the blue light efficiency is only 8.7 cd / A and the lifespan is only 23,000 hours. Thus, it can be seen that the service life of the blue light-emitting material is shorter than that of the green light-emitting material, and the service life of the green light-emitting material is shorter than that of the red light-emitting material. Therefore, in the embodiments of the present application, by increasing the width of the light-emitting material with a short lifespan, the volume of the light-emitting material with a short lifespan is increased, so that on the basis of reducing the applied current, the overall display brightness of the light-emitting layer 240 can be ensured, thereby not affecting the display effect.

[0036] Compared with the solution of increasing the height of the light-emitting layer 240 to increase the volume of the light-emitting layer 240, in the embodiments of the present application, the volume of the light-emitting layer 240 is increased by changing the width of the light-emitting layer 240 in the horizontal direction, so that the top flatness of the red sub-pixel structure 200a, the green sub-pixel structure 200b, and the blue sub-pixel structure 200c will not be affected.

[0037] In addition, as Figure 3 shown, it is a planar schematic diagram of an organic light-emitting display panel. Specifically, in order to avoid the influence of light mixing between different sub-pixel structures, in the embodiments of the present application, this problem is solved by adjusting the arrangement of the sub-pixel structures. Specifically, in any two adjacent sub-pixel structures of the organic light-emitting display panel 30, the cathode 210, the electron injection layer 220, the electron transport layer 230, the light-emitting layer 240, the hole transport layer 250, the hole injection layer 260, and the anode 270 in one of the sub-pixel structures are arranged in parallel along the first direction (represented by X in the figure), and the cathode 210, the electron injection layer 220, the electron transport layer 230, the light-emitting layer 240, the hole transport layer 250, the hole injection layer 260, and the anode 270 in the other sub-pixel structure are arranged in parallel along the second direction (represented by Y in the figure); wherein, the first direction and the second direction are perpendicularly arranged, and both the cathode 210 and the anode 270 are made of metal materials.

[0038] As an optional implementation manner, the film layers in the odd-row sub-pixel structures are arranged in the same direction, and the film layers in the even-row sub-pixel structures are arranged in another direction, and the two arrangement directions are perpendicular; at this time, the cathode 210 and the anode 270 in each sub-pixel structure, together with the cathode 210 and the anode 270 in the two adjacent upper and lower sub-pixel structures, enclose a square metal frame.

[0039] As another optional implementation, the film layers in the odd-numbered columns of sub-pixel structures are arranged in the same direction, and the film layers in the even-numbered columns of sub-pixel structures are arranged in another direction, and the two arrangement directions are perpendicular to each other.

[0040] As another optional implementation, the arrangement directions of the film layers in any two adjacent sub-pixel structures may be inconsistent.

[0041] With the above design, the light emitted by each light emitting layer 240 will be blocked by the surrounding metal layers and will not affect other sub-pixel structures, thereby avoiding the problem of light mixing. There may be gaps between adjacent sub-pixel structures, or an insulating structure may be provided between adjacent sub-pixel structures to avoid electrical interference.

[0042] Embodiment 2:

[0043] like Figure 4 As shown, it is a planar schematic diagram of another organic light-emitting display panel, which is a second embodiment provided in the present application. Specifically, the pixel 200 includes a red sub-pixel structure 200a, a green sub-pixel structure 200b and a blue sub-pixel structure 200c. The light-emitting layers 240 in the red sub-pixel structure 200a, the green sub-pixel structure 200b and the blue sub-pixel structure 200c are all annular structures, and the light-emitting layer 240 in the green sub-pixel structure 200b surrounds the light-emitting layer 240 in the red sub-pixel structure 200a, and the light-emitting layer 240 in the blue sub-pixel structure 200c surrounds the light-emitting layer 240 in the green sub-pixel structure 200b.

[0044] Compared with the square-structured light-emitting layer 240 in the first embodiment, the light-emitting layer 240 in the embodiment of the present application adopts an annular design, which can be a square ring, a circular ring or other annular forms. Specifically, taking the pixel 200 as a unit, the blue light-emitting layer 240, the green light-emitting layer 240 and the red light-emitting layer 240 in the red sub-pixel structure 200a, the green sub-pixel structure 200b and the blue sub-pixel structure 200c are sequentially arranged from the outside to the inside, so that the comprehensive length of the blue light-emitting layer 240, the comprehensive length of the green light-emitting layer 240 and the comprehensive length of the red light-emitting layer 240 are reduced in turn, thereby gradually reducing the corresponding volume. With the design in the embodiment of the present application, it is not necessary to increase the width of the light-emitting layer 240 too much, and the light uniformity between different light-emitting layers 240 is good.

[0045] It should be noted that the light-emitting layer 240 may be an open ring structure or a closed ring structure.

[0046] Embodiment three:

[0047] like Figure 5As shown, it is a schematic cross-sectional view of another organic light-emitting display panel. As the third embodiment provided by this application, specifically, the height of the light-emitting layer 240 is higher than that of the cathode 210, the electron injection layer 220, the electron transport layer 230, the hole transport layer 250, the hole injection layer 260, and the anode 270; the light-emitting layer 240 includes a connected first light-emitting segment 241 and a second light-emitting segment 242. The first light-emitting segment 241 is disposed between the electron transport layer 230 and the hole transport layer 250, and the second light-emitting segment 242 is disposed on the cathode 210, the electron injection layer 220, the electron transport layer 230, the first light-emitting segment 241, the hole transport layer 250, the hole injection layer 260, and the anode 270.

[0048] Among them, the embodiments of this application can be a further improvement based on the first embodiment and the second embodiment, or the volume of the first light-emitting segment 241 of each light-emitting layer 240 can be controlled to be the same, while the areas of the second light-emitting segments 242 of the blue light-emitting layer 240, the green light-emitting layer 240, and the red light-emitting layer 240 gradually decrease.

[0049] In the embodiments of this application, the light-emitting layer 240 adopts a T-shaped design. By extending the top of the light-emitting layer 240 toward both sides to cover the cathode 210, the electron injection layer 220, the electron transport layer 230, the first light-emitting segment 241, the hole transport layer 250, the hole injection layer 260, and the anode 270 in the corresponding sub-pixel structure, the effect of increasing the volume of the light-emitting layer 240 is achieved; moreover, since the second light-emitting segment 242 is on the light-emitting side of the organic light-emitting display panel 30, the light emission will not be blocked by the film layers in the sub-pixel structure, thereby ensuring a high light transmittance and being beneficial to further improving the light-emitting brightness.

[0050] As an alternative implementation manner, the bottom of the light-emitting layer 240 can also be extended toward both sides, so that the cathode 210, the electron injection layer 220, the electron transport layer 230, the first light-emitting segment 241, the hole transport layer 250, the hole injection layer 260, and the anode 270 in the corresponding sub-pixel structure are disposed on the second light-emitting segment 242. Or, the top and the bottom of the light-emitting layer 240 are simultaneously extended toward both sides, so that the second light-emitting segment 242 at the top covers the cathode 210, the electron injection layer 220, the electron transport layer 230, the first light-emitting segment 241, the hole transport layer 250, the hole injection layer 260, and the anode 270 in the corresponding sub-pixel structure, and the second light-emitting segment 242 at the bottom is laid under the cathode 210, the electron injection layer 220, the electron transport layer 230, the first light-emitting segment 241, the hole transport layer 250, the hole injection layer 260, and the anode 270.

[0051] It should be noted that in the present application, while increasing the volume of the light-emitting material with a short lifespan, the volume of the light-emitting material with a long lifespan can also be increased synchronously, that is, the volume of all the light-emitting layers 240 is increased synchronously, and the volume of the light-emitting layer 240 of each color is made to a relatively large extent. In this way, on the basis of facilitating processing and design, the current flowing through all the light-emitting layers 240 is reduced synchronously, and the service life of the light-emitting layer 240 corresponding to each color is increased. Correspondingly, in the above-mentioned third embodiment, the shapes and volumes of the red light-emitting layer 240, the green light-emitting layer 240, and the blue light-emitting layer 240 can be kept consistent.

[0052] On the other hand, the present application further improves the brightness of the sub-pixel structure from the perspective of improving the light utilization rate of the sub-pixel structure, avoiding increasing the current, so as to improve the service life of the light-emitting material. Specifically, the following specific embodiment design can be seen.

[0053] Fourth Embodiment:

[0054] As Figure 6 shown, it is a cross-sectional schematic diagram of another organic light-emitting display panel. As the fourth embodiment provided by the present application, the organic light-emitting display panel 30 further includes a reflective layer 280, the reflective layer 280 is disposed on the substrate 100, and the cathode 210, the electron injection layer 220, the electron transport layer 230, the light-emitting layer 240, the hole transport layer 250, the hole injection layer 260, and the anode 270 are arranged in parallel on the reflective layer 280.

[0055] In the embodiment of the present application, since the light-emitting layer 240 is self-luminous, the light-emitting layer 240 can emit light in all directions. After adding the reflective layer 280 below the sub-pixel structure, the light emitted from the bottom of the light-emitting layer 240 can be reflected to the top of the reflective layer 280, improving the light utilization rate.

[0056] Furthermore, in the embodiment of the present application, both the cathode 210 and the anode 270 are made of transparent conductive materials. At this time, the light reflected by the reflective layer 280 can pass through the cathode 210, the electron injection layer 220, the electron transport layer 230, the hole transport layer 250, the hole injection layer 260, and the anode 270, greatly improving the light utilization rate and significantly increasing the overall brightness. Of course, only one of the cathode 210 and the anode 270 can also be designed to be made of transparent conductive materials, and indium tin oxide (ITO) can be specifically used.

[0057] To avoid the problem of light mixing, in the embodiments of the present application, when both the cathode 210 and the anode 270 are made of transparent conductive materials, a light-blocking structure is further provided between different sub-pixel structures, which can specifically be made of a black resin material. While insulating adjacent sub-pixel structures, it can also prevent interference between the lights emitted by different sub-pixels 200.

[0058] Fifth Embodiment:

[0059] As Figure 7 shown, it is a cross-sectional schematic diagram of another organic light-emitting display panel. As the fifth embodiment provided by the present application, the organic light-emitting display panel 30 further includes a packaging layer 290, which is made of a transparent and insulating material (such as a transparent resin material), is disposed on the side of the pixel 200 away from the substrate 100, and fills the gaps between adjacent sub-pixel structures.

[0060] In the embodiments of the present application, there is no need to additionally add a structural design for isolating adjacent sub-pixels 200 during the manufacturing process of the sub-pixel structure. During the design process of manufacturing the packaging layer 290, the material of the packaging layer 290 coated on the sub-pixel structure will penetrate into the gaps between adjacent sub-pixel structures, completing the insulation design between adjacent sub-pixels 200, thereby reducing the process steps, shortening the process time, and reducing the production cost.

[0061] Based on the embodiments of the present application, the design of the fourth embodiment can be combined, and a reflective layer 280 is added at the bottom of the sub-pixel structure, so that the light reflected back from the reflective layer 280 can not only be emitted from the film layer structure in the sub-pixel structure, but also be emitted from the packaging layer 290 between adjacent sub-pixel structures, improving the light utilization rate.

[0062] Furthermore, one of the cathode 210 or the anode 270 can be made of a metal material, and the other can be made of a transparent conductive material. In this way, the light-emitting surface of each sub-pixel structure can cover a gap surface, which is beneficial to increasing the light-emitting area, and there are metal layers on both sides of the light-emitting layer 240 in each sub-pixel 200 to block light, thus avoiding the influence of light on the light emission of adjacent sub-pixel structures.

[0063] As Figure 8 shown, the present application also discloses a display device. The display device 10 includes a driving circuit 20 and the organic light-emitting display panel 30 in the above embodiments, and the driving circuit 20 is used to drive the organic light-emitting display panel 30.

[0064] Using the display device 10 provided by the embodiments of the present application has a relatively high brightness and a relatively long service life, and is extremely competitive in the market.

[0065] In addition, the inventive concept of the present application can form a very large number of embodiments. However, due to the limited space of the application documents, it is impossible to list them all. Therefore, on the premise of no conflict, the above-described embodiments or technical features can be arbitrarily combined to form new embodiments. After the combination of each embodiment or technical feature, the original technical effect will be enhanced.

[0066] The above content is a further detailed description of the present application in combination with specific optional implementation manners. It cannot be determined that the specific implementation of the present application is only limited to these descriptions. For those of ordinary skill in the technical field to which the present application belongs, without departing from the concept of the present application, several simple deductions or substitutions can be made, which should all be regarded as belonging to the protection scope of the present application.

Claims

1. An organic light-emitting display panel, comprising a substrate and a plurality of pixels arranged in an array on the substrate, characterized in that, The sub-pixel structure in each of the pixels includes a cathode, an electron injection layer, an electron transport layer, a light-emitting layer, a hole transport layer, a hole injection layer, and an anode, which are sequentially arranged side by side on the substrate; Taking the direction perpendicular to the substrate as the height direction and the direction parallel to the substrate as the width direction, the heights of the cathode, the electron injection layer, the electron transport layer, the light-emitting layer, the hole transport layer, the hole injection layer, and the anode are respectively greater than the widths of the cathode, the electron injection layer, the electron transport layer, the light-emitting layer, the hole transport layer, the hole injection layer, and the anode; In any two adjacent sub-pixel structures of the organic light-emitting display panel, the cathode, the electron injection layer, the electron transport layer, the light-emitting layer, the hole transport layer, the hole injection layer, and the anode in one of the sub-pixel structures are arranged side by side in a first direction, and the cathode, the electron injection layer, the electron transport layer, the light-emitting layer, the hole transport layer, the hole injection layer, and the anode in the other sub-pixel structure are arranged side by side in a second direction; Wherein, the first direction and the second direction are perpendicularly arranged, and both the cathode and the anode are made of metal materials.

2. The organic light-emitting display panel according to claim 1, characterized in that, The pixel includes a red sub-pixel structure, a green sub-pixel structure, and a blue sub-pixel structure. The width of the light-emitting layer in the blue sub-pixel structure is greater than or equal to the width of the light-emitting layer in the green sub-pixel structure, and the width of the light-emitting layer in the green sub-pixel structure is greater than or equal to the width of the light-emitting layer in the red sub-pixel structure.

3. The organic light-emitting display panel according to claim 1, characterized in that The organic light-emitting display panel further includes a reflective layer, the reflective layer is arranged on the substrate, and the cathode, the electron injection layer, the electron transport layer, the light-emitting layer, the hole transport layer, the hole injection layer, and the anode are arranged side by side on the reflective layer.

4. The organic light-emitting display panel according to claim 1, wherein The height of the light-emitting layer is higher than the heights of the cathode, the electron injection layer, the electron transport layer, the hole transport layer, the hole injection layer, and the anode; The light-emitting layer includes a connected first light-emitting segment and a second light-emitting segment. The first light-emitting segment is arranged between the electron transport layer and the hole transport layer, and the second light-emitting segment is arranged on the cathode, the electron injection layer, the electron transport layer, the first light-emitting segment, the hole transport layer, the hole injection layer, and the anode.

5. The organic light-emitting display panel according to claim 1, wherein, The organic light-emitting display panel further includes a packaging layer, the packaging layer is made of a transparent and insulating material, is arranged on the side of the pixel away from the substrate, and fills the gap between adjacent sub-pixel structures.

6. A display device, characterized in that, It includes a driving circuit and the organic light-emitting display panel according to any one of claims 1-5, and the driving circuit is used to drive the organic light-emitting display panel.

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