Display panel and display device

Abstract

The utility model discloses a display panel and a display device. The display panel comprises a silicon-based substrate, a driving circuit layer, a luminescent device layer and an insulating layer. The driving circuit layer is arranged on the silicon-based substrate. The light-emitting device layer is located on the side, away from the silicon-based substrate, of the driving circuit layer. The light-emitting device comprises a first electrode, a reflection electrode, a transparent electrode, a light-emitting layer and a second electrode which are sequentially arranged in a stacked mode. The first electrode is electrically connected with the driving circuit; in the direction perpendicular to the plane where the silicon-based substrate is located, the first electrode comprises a conductive part which is not overlapped with the reflecting electrode; the transparent electrode is in contact with the conductive portion. And an insulating layer. The substrate is located between the driving circuit layer and the light-emitting device layer; the insulating layer comprises a plurality of grooves corresponding to the light emitting devices; parts of the first electrode and the reflecting electrode are positioned in the groove and extend along the side wall of the groove; in the direction perpendicular to the plane where the silicon-based substrate is located, the conductive parts are not overlapped with the grooves; wherein the oxidation resistance of the first electrode is greater than that of the reflection electrode.

Description

Technical Field

[0001] This utility model relates to the field of display technology, and in particular to a display panel and a display device. Background Technology

[0002] Organic light-emitting diode (OLED) display panels are characterized by being all-solid-state, self-emissive, having high contrast, and wide viewing angles. They are the next generation of flat panel display panels after liquid crystal display panels.

[0003] Currently, self-emissive display panels can include multiple light-emitting devices. These devices can consist of a reflective electrode, an anode, a light-emitting layer, and a cathode, stacked sequentially. By applying a certain electrical signal to the anode and cathode, photons in the light-emitting layer can be excited, enabling the light-emitting devices to emit light. Simultaneously, the light beam emitted and propagating downwards from the light-emitting devices can be reflected back to the light-emitting side by the reflective electrode, thereby improving light extraction efficiency. However, in the light beam emitted and propagating downwards from the light-emitting elements, light with a large incident angle with the reflective electrode can propagate to the area where adjacent light-emitting devices are located, resulting in color mixing. Furthermore, the light is totally internally reflected and laterally guided within the display panel, leading to light loss. Utility Model Content

[0004] This invention provides a display panel and a display device that can improve the reliability of the light-emitting device in receiving electrical signals and the light-emitting efficiency of the light-emitting device, thereby improving the display effect of the display panel.

[0005] In a first aspect, this utility model provides a display panel, comprising:

[0006] Silicon substrate;

[0007] A driving circuit layer is disposed on the silicon substrate; the driving circuit layer includes a plurality of driving circuits arranged in an array.

[0008] A light-emitting device layer is located on the side of the driving circuit layer opposite to the silicon substrate. The light-emitting device layer includes a plurality of light-emitting devices, each of which includes a first electrode, a reflective electrode, a transparent electrode, a light-emitting layer, and a second electrode stacked sequentially. The first electrode is electrically connected to the driving circuit. Along a direction perpendicular to the plane of the silicon substrate, the first electrode includes a conductive portion that does not overlap with the reflective electrode. The transparent electrode is in contact with the conductive portion.

[0009] An insulating layer is located between the driving circuit layer and the light-emitting device layer; the insulating layer includes a plurality of grooves corresponding to each of the light-emitting devices.

[0010] The first electrode and portions of the reflective electrode are located within the groove and extend along the sidewall of the groove; the conductive portion does not overlap with the groove in a direction perpendicular to the plane of the silicon substrate.

[0011] The antioxidant properties of the first electrode are greater than those of the reflective electrode.

[0012] Optionally, the display panel may also include:

[0013] A microlens array is located on the side of the light-emitting device layer facing away from the silicon substrate; the microlens array includes multiple microlenses corresponding to multiple light-emitting devices; in the thickness direction of the display panel, the corresponding microlenses and light-emitting devices overlap.

[0014] Optionally, the insulating layer includes at least one sub-insulating layer; the groove includes at least one groove portion corresponding to the at least one sub-insulating layer; the angle between the sidewall of the groove portion and the plane where the silicon substrate is located, on the side facing away from the groove portion, is a first angle α.

[0015] Where 8°≤α≤45°.

[0016] Optionally, when the groove includes multiple groove portions, the angle α of the first included angle located in each of the groove portions gradually increases in the light emission direction of the display panel.

[0017] Optionally, the material of the first electrode includes at least one selected from titanium, tantalum, titanium nitride, and tantalum nitride;

[0018] The material of the reflective electrode includes aluminum.

[0019] Optionally, the display panel may also include:

[0020] A transparent medium is located within the groove and on the side of the reflective electrode opposite to the silicon substrate.

[0021] Optionally, the first electrode includes a flat portion and an inclined portion surrounding the flat portion; the inclined portion extends along the sidewall of the groove;

[0022] The leveling section is electrically connected to the driving circuit.

[0023] Optionally, in the thickness direction of the display panel, the flattened portion does not overlap with the driving circuit.

[0024] Optionally, in the thickness direction of the display panel, the flattened portion overlaps with the driving circuit.

[0025] Optionally, the flattening part is electrically connected to the driving circuit through a conductive via, and the flattening part covers the conductive via.

[0026] Optionally, the display panel may also include:

[0027] A planarization layer is located between the driving circuit layer and the insulating layer; the planarization layer includes a plurality of the conductive vias.

[0028] Optionally, the display panel may also include:

[0029] A color resist layer is located on the side of the light-emitting device layer facing away from the silicon substrate; the color resist layer includes a plurality of color resist structures corresponding to a plurality of light-emitting devices; in the thickness direction of the display panel, the corresponding color resist structures and light-emitting devices overlap.

[0030] Optionally, the display panel may also include:

[0031] The encapsulation layer is located on the side of the light-emitting device layer that is away from the silicon substrate.

[0032] Secondly, the present invention provides a display device, including the display panel described in the first aspect.

[0033] The technical solution provided by this utility model involves setting multiple grooves corresponding to each light-emitting device in the insulating layer of the display panel, with the first electrode and reflective electrode portions of the light-emitting device located within the grooves and extending along the sidewalls of the grooves. This results in the reflective electrode within the groove having a concave shape. When the light-emitting device emits a light beam, the light beam transmitted to the reflective electrode can be focused and reflected by the reflective electrode to the light-emitting side of the light-emitting device, thereby increasing the light output of the light-emitting device and reducing light loss. Simultaneously, a first electrode is set between the reflective electrode and the driving circuit layer, and the oxidation resistance of the first electrode is greater than that of the reflective electrode, making the reliability of the electrical signal transmission of the first electrode greater than that of the reflective electrode. By contacting the transparent electrode with the conductive portion of the first electrode, the driving signal provided by the driving circuit can be accurately transmitted to the transparent electrode through the first electrode, improving the reliability of the light-emitting device receiving the driving signal, thereby ensuring the brightness of the light-emitting device and improving the display effect of the display panel. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the structure of a display panel related to this technology;

[0035] Figure 2 A schematic diagram of the structure of a display panel provided in an embodiment of this utility model;

[0036] Figure 3 This is a schematic diagram of another display panel provided in an embodiment of the present utility model;

[0037] Figure 4 This is a schematic diagram of the structure of another display panel provided in an embodiment of the present utility model;

[0038] Figure 5 This is a schematic diagram of another display panel provided in an embodiment of the present utility model;

[0039] Figure 6 A schematic diagram of the structure of a display panel provided in an embodiment of this utility model;

[0040] Figure 7 This is a schematic diagram of another display panel provided in an embodiment of the present utility model;

[0041] Figure 8 This is a schematic diagram of the structure of another display panel provided in an embodiment of the present utility model;

[0042] Figure 9 This is a schematic diagram of another display panel provided in an embodiment of the present utility model;

[0043] Figure 10 A schematic diagram of the structure of a display panel provided in an embodiment of this utility model;

[0044] Figure 11 This is a schematic diagram of another display panel provided in an embodiment of the present utility model;

[0045] Figure 12 This is a schematic diagram of the structure of a display device provided in an embodiment of the present utility model. Detailed Implementation

[0046] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0047] Figure 1 This is a schematic diagram of the structure of a display panel in related technologies, such as... Figure 1As shown, the display panel 001 includes a silicon substrate 010, a driving circuit layer 020 located on one side of the silicon substrate 010, and a plurality of light-emitting devices 030 located on one side of the driving circuit layer 020. Each light-emitting device 030 includes a reflective electrode 031, a first electrode 032, a light-emitting layer 033, and a second electrode 034 sequentially disposed on the side of the reflective electrode 031 facing away from the silicon substrate 010. By providing the reflective electrode 031 located between the first electrode 032 and the driving circuit layer 020, when a light beam is emitted from the light-emitting device 030, the light beam propagating towards the reflective electrode 031 can be reflected by the reflective electrode 031 to the light-emitting side, thereby improving the light extraction efficiency. However, because the reflective electrode 031 is parallel to the first electrode 032 in related technologies, light beams with a large incident angle to the reflective electrode 031 will be reflected by the reflective electrode 031 to the area where the adjacent light-emitting device 030 is located, resulting in color mixing. Furthermore, the light is totally internally reflected and laterally guided within the display panel, also leading to light loss. Furthermore, in related technologies, the reflective electrode 031 is electrically connected to the driving circuit 021 in the driving circuit layer 020, thereby transmitting the driving signal to the first electrode 032 through the reflective electrode 031. However, the reflective electrode 031 may undergo an oxidation reaction during its fabrication process, resulting in the formation of a passivation layer on its surface, which affects the electrical conductivity of the reflective electrode 031. This leads to lower reliability of the driving signal transmitted to the first electrode 032, affecting the display effect of the display panel 001.

[0048] To address the aforementioned problems, this utility model provides a display panel. Figure 2 This is a schematic diagram of the structure of a display panel provided in an embodiment of the present utility model, as shown below. Figure 2 As shown, the display panel 100 includes a silicon substrate 10, a driving circuit layer 20, a light-emitting device layer 30, and an insulating layer 40. The driving circuit layer 20 is disposed on the silicon substrate 10 and includes a plurality of driving circuits 21 arranged in an array. The light-emitting device layer 30 is located on the side of the driving circuit layer 20 facing away from the silicon substrate 10. The light-emitting device layer 30 includes a plurality of light-emitting devices 03, each light-emitting device 03 including a first electrode 31, a reflective electrode 32, a transparent electrode 33, a light-emitting layer 34, and a second electrode 35 stacked sequentially. The first electrode 31 is electrically connected to the driving circuit 21; along a direction perpendicular to the plane of the silicon substrate 10, the first electrode 31 includes a conductive portion 310 that does not overlap with the reflective electrode 32, and the transparent electrode 33 is in contact with the conductive portion 310. The insulating layer 40 is located between the driving circuit layer 20 and the light-emitting device layer 30. The insulating layer 40 includes a plurality of grooves 04 corresponding to each light-emitting device 03. Parts of the first electrode 31 and the reflective electrode 32 are located within the grooves 04 and extend along the sidewalls of the grooves 04. The conductive portion 310 does not overlap with the grooves 04 in the direction Z perpendicular to the plane of the silicon substrate 10.

[0049] The oxidation resistance of the first electrode 31 is greater than that of the reflective electrode 32. Oxidation resistance refers to a material's ability to resist oxidation; the stronger the oxidation resistance, the less likely an oxide layer will form on the material's surface. Because the oxide layer has strong insulating properties, the conductivity of the electrode layer with the oxide layer on its surface is low. Therefore, the conductivity of the first electrode 31 is greater than that of the reflective electrode 32.

[0050] Each driving circuit 21 in the driving circuit layer 20 is electrically connected to the first electrode 31 of each light-emitting device 03, providing a driving signal to the first electrode 31 of the light-emitting device 03 to drive the light-emitting device 03 to display light emission. The driving circuit 21 in the driving circuit layer 20 can control the color and brightness of the light emitted by the light-emitting device 03 by controlling the driving signal provided to it. The driving signal provided by the driving circuit 21 to the first electrode 31 can be a voltage signal or a current signal, etc. The driving circuit 21 may include active devices and / or passive devices. Active devices include transistors, etc., and passive devices include resistors, capacitors, inductors, etc. Provided that the driving circuit 21 can drive the light-emitting device 03 to display light emission, the specific structure of the driving circuit in this embodiment of the invention is not limited.

[0051] The silicon substrate 10 includes semiconductor materials such as monocrystalline silicon, polycrystalline silicon, amorphous silicon, or silicon-based composite materials. The insulating layer 40 may be made of materials such as Al2O3, SiN, or SiO2, and can be set according to actual needs; no specific limitation is made here. The first electrode 31 may be made of materials such as titanium or tantalum, the reflective electrode 32 may be made of materials such as aluminum, the transparent electrode 33 may be made of materials such as ITO, and the second electrode 34 may be made of materials such as Ag, IZO, or AZO.

[0052] In this process, the driving circuit 21 provides a driving signal to the transparent electrode 33, enabling the transparent electrode 33 to provide holes. Simultaneously, the second electrode 35 receives the power signal ELVSS, enabling the second electrode 35 to provide electrons. The electrons and holes recombine in the light-emitting layer 34, exciting photons and causing the light-emitting device 03 to emit light. When the light-emitting device 03 emits a light beam, the beam propagating towards the reflecting electrode 32 can be reflected by the reflecting electrode 32 back to the light-emitting side, thereby improving the light extraction efficiency.

[0053] It is understandable that in the related technology, the reflective electrode 32 is arranged parallel to the first electrode 31. A light beam with a large incident angle to the reflective electrode 32 will be reflected by the reflective electrode 32 to the area where the adjacent light-emitting device 03 is located, resulting in color mixing. The light is totally reflected inside the display panel and is laterally guided, which also leads to light loss.

[0054] Continue to refer to Figure 2In this embodiment of the invention, multiple grooves 04 corresponding to each light-emitting device 03 are provided in the insulating layer 40, and portions of the first electrode 31 and the reflective electrode 32 are located within the grooves 04 and extend along the sidewalls of the grooves 04, so that the reflective electrode 32 can form a concave reflective electrode along the sidewalls of the grooves 04. Since the concave mirror has the function of focusing the light beam, after the light beam emitted from the light-emitting device 03 is transmitted to the surface of the reflective electrode 32 located in the groove 04, the concave reflective electrode 32 can focus and reflect the light beam to the light-emitting side of the light-emitting device 03, avoiding the reflected light beam from being emitted into adjacent pixels and causing color mixing problems, while increasing the light output of the light-emitting device 03 and reducing light loss.

[0055] Furthermore, oxide layers formed by oxidation of the conductive layer surface typically have low conductivity, thus affecting the conductivity of the conductive layer. This embodiment of the invention provides a first electrode 31 with higher oxidation resistance than the reflective electrode 32 between the reflective electrode 32 and the driving circuit layer 20. This ensures that after the first electrode 31 and the reflective electrode 32 are fabricated, the rate at which an oxide layer forms on the surface of the first electrode 31 is lower than the rate at which an oxide layer forms on the surface of the reflective electrode 32. Additionally, the reflective electrode 32, located on the side of the first electrode 31 facing away from the silicon substrate 10, covers this side of the first electrode 31, further preventing oxidation of this side. This makes the reliability of signal transmission by the first electrode 31 higher than that by the reflective electrode 32. Therefore, the transparent electrode 33 is brought into contact with the conductive portion 310 in the first electrode 31, allowing the driving circuit 21 to provide a driving signal to the transparent electrode 33 through the first electrode 31. This improves the reliability of the light-emitting device receiving the driving signal, thereby ensuring the brightness of the light-emitting device 03 and improving the display effect of the display panel 100.

[0056] The technical solution of this utility model involves setting multiple grooves corresponding to each light-emitting device in the insulating layer of the display panel, with portions of the first electrode and reflective electrode of the light-emitting device located within the grooves and extending along the sidewalls of the grooves. This results in the reflective electrode within the groove having a concave shape. When the light-emitting device emits a light beam, the light beam transmitted to the reflective electrode can be focused and reflected back to the light-emitting side of the light-emitting device by the reflective electrode, increasing the light output of the light-emitting device and reducing light loss. Simultaneously, a first electrode is set between the reflective electrode and the driving circuit layer, and the oxidation resistance of the first electrode is greater than that of the reflective electrode, making the reliability of the electrical signal transmission by the first electrode greater than that by the reflective electrode. By contacting the transparent electrode with the conductive portion of the first electrode, the driving signal provided by the driving circuit can be accurately transmitted to the transparent electrode through the first electrode, improving the reliability of the light-emitting device receiving the driving signal, thereby ensuring the brightness of the light-emitting device and improving the display effect of the display panel.

[0057] In an alternative embodiment, reference continues. Figure 2 The material of the first electrode 31 includes at least one of titanium, tantalum, titanium nitride and tantalum nitride; the material of the reflective electrode 32 includes aluminum.

[0058] Among them, titanium, tantalum, titanium nitride, or tantalum nitride all have greater oxidation resistance than aluminum.

[0059] Specifically, due to the relatively reactive nature of aluminum, regardless of whether a dry or wet process is used to fabricate the reflective electrode 32 containing aluminum, an aluminum oxide layer will form on the surface of the reflective electrode 32 facing away from the silicon substrate 10. The aluminum oxide layer has poor conductivity and is typically used as a passivation layer to isolate it from external water and oxygen intrusion. If the surface of the reflective electrode 32 facing away from the silicon substrate 10 is brought into contact with the transparent electrode 33, and an electrical signal is supplied to the transparent electrode 33 through the reflective electrode 32, the presence of the aluminum oxide layer will prevent the transparent electrode 33 from receiving the electrical signal in a timely manner or may result in no electrical signal being received at all. This can lead to problems such as the light-emitting device 03 failing to emit light or emitting light intermittently. Therefore, when the material of the reflective electrode 32 includes aluminum, the material of the first electrode 31 includes at least one of titanium, tantalum, titanium nitride, and tantalum nitride, which have high oxidation resistance. The surface of the first electrode 31 will not form an oxide layer in a short time or the oxide layer formed is insufficient to block the transmission of electrical signals. This makes the conductivity reliability of the first electrode 31 greater than that of the reflective electrode 32. In turn, the first electrode 31 provides the driving signal required by the light-emitting device 03 to the transparent electrode 33, thereby improving the reliability and stability of the light-emitting device 03 in receiving the driving signal, and thus improving the luminous brightness of the light-emitting device 03 and the display effect of the display panel 100.

[0060] In an optional embodiment, Figure 3 This is a schematic diagram of another display panel structure provided in an embodiment of the present utility model, as shown below. Figure 3 As shown, the display panel 100 also includes a microlens array 50, which is located on the side of the light-emitting device layer 30 away from the silicon substrate 10. The microlens array 50 includes a plurality of microlenses 51 corresponding to a plurality of light-emitting devices 03. In the thickness direction Z of the display panel 100, the corresponding microlenses 51 and light-emitting devices 03 overlap.

[0061] The microlens array 50 is an array of lenses with apertures and relief depths in the micrometer range. The microlenses 51 in the microlens array 50 can be spherical mirrors, aspherical mirrors, cylindrical mirrors, prisms, etc. Figure 3 The diagram only shows the structure of the microlens 51 as a spherical mirror, but it can also be other shapes, which can be set according to actual needs. No specific limitation is made here.

[0062] Specifically, the microlens array 50 includes a number of microlenses 51, each of which transmits a beam of light independently without interference. After the light beam provided by the light-emitting device 03 passes through the microlens array 50, each microlens 51 in the array can focus the beam, reducing light loss and improving the overall brightness of the display panel 100. Furthermore, it can adjust and homogenize the beam emitted from the display panel 100, eliminating brightness unevenness and improving brightness uniformity. The microlens array 50 can change the propagation direction of the beam, increasing the viewing angle of the display panel 100, resulting in smaller changes in color and brightness when viewing the display from different angles, thus improving the user's viewing experience from different positions. Moreover, by setting corresponding overlapping microlenses 51 and light-emitting devices 03 along the thickness direction Z of the display panel 100, the microlens array 51 can improve beam utilization, thus helping to reduce the power consumption required to achieve the target brightness and extending the battery life of the light-emitting device 03.

[0063] Optional, Figure 4 This is a schematic diagram of the structure of another display panel provided in an embodiment of the present utility model, as shown below. Figure 4 As shown, the insulating layer 40 includes at least one sub-insulating layer 41; the groove 04 includes at least one groove portion 041 corresponding to the at least one sub-insulating layer 41; the angle between the sidewall of the groove portion 041 and the plane where the silicon substrate 10 is located, the angle on the side away from the groove portion 041 is the first angle α, where 8°≤α≤45°.

[0064] Specifically, the smaller the first angle α, the more the light beam incident on the surface of the reflective electrode 32 can be reflected by the reflective electrode 32 to the light-emitting side. The greater the light intensity reflected by the reflective electrode 32 to the area where the light-emitting device 03 is located, the higher the light-emitting efficiency of the display panel 100. If the first angle α is less than 8°, the reflective electrode 32 located in the recess 041 is approximately parallel to the transparent electrode 33. Light beams with a large incident angle to the reflective electrode 32 will be reflected by the reflective electrode 32 to the area where the adjacent light-emitting device 03 is located, resulting in color mixing. The light is also totally internalized and laterally guided inside the display panel 100, which also leads to light loss. Therefore, the lower limit of the first angle α is set at 8°. If the first angle α is greater than 45°, the light beam incident on the surface of the reflective electrode 32 may be reflected back and forth on the surface of the reflective electrode 32, resulting in a large amount of light beams not being reflected to the light-emitting side of the light-emitting device 03, resulting in low light-emitting efficiency. Therefore, by setting the range of the first included angle α to 8° to 45°, the light emission efficiency of the light-emitting device 03 is improved, thereby enhancing the light emission effect of the display panel 100.

[0065] It should be noted that, provided that the insulating layer 40 includes a sub-insulating layer 41 and the groove 04 includes a groove portion 041 corresponding to the sub-insulating layer 41, the light emission efficiency of the display panel 100 is measured to be 85% when the first included angle α is 50°. When the first included angle α is 20°, the light emission efficiency of the display panel 100 is measured to be 110%. Thus, it can be seen that setting the first included angle α within the range of 8° to 45° can significantly improve the light emission efficiency of the display panel 100.

[0066] Understandable, Figure 4 The diagram only shows the structure of the display panel 100 including a single sub-insulating layer 041. In other alternative embodiments, the display panel 100 may also have multiple sub-insulating layers 041, which can be configured according to actual needs and are not specifically limited here.

[0067] In an optional embodiment, Figure 5 This is a schematic diagram of another display panel provided in an embodiment of the present utility model, as shown below. Figure 5 As shown, when the groove 04 includes multiple groove portions 041, the angle of the first included angle α of each groove portion 041 gradually increases in the light emission direction Z of the display panel 100.

[0068] Specifically, when the insulating layer 40 includes multiple sub-insulating layers 41, each sub-insulating layer 41 can be provided with a groove portion 041. By being provided in the light emission direction Z of the display panel 100, the angle of the first included angle α of each groove portion 041 gradually increases, so that the reflective electrode 32 in the groove portion 041 located near the silicon substrate 10 can reflect the light beam to the reflective electrode 32 in the groove portion 041 away from the silicon substrate 10. Then, the reflective electrode 32 on the side away from the silicon substrate 10 reflects the light to the light emission side of the light-emitting device 03 where the reflective electrode 32 is located, so as to avoid the light beam being reflected to the area where the adjacent light-emitting device 03 is located, thereby improving the light emission efficiency and light emission accuracy of the light-emitting device 03.

[0069] Understandable, Figure 5 The display panel 100 shown includes two sub-insulating layers 41, namely a first sub-insulating layer 411 and a second sub-insulating layer 412. The groove 04 includes a first groove portion 0411 and a second groove portion 0412. The first included angle α1 located in the first groove portion 0411 is smaller than the second included angle α2 located in the second groove portion 0422. In other optional embodiments, the display panel 100 may also include three sub-insulating layers 41, etc., which can be set according to actual needs, and no specific limitation is made here.

[0070] Optional, see reference Figures 2-5 The display panel 100 also includes a transparent medium 60, which is located in the groove 04 and on the side of the reflective electrode 32 away from the silicon substrate 10.

[0071] The transparent medium 60 is made of silicon dioxide (SiO2). x ), silicon nitride (SiN) x ) or silicon oxynitride (SiON) x Options such as ) can be set according to actual needs, and no specific limitations are made here.

[0072] Specifically, by providing a transparent medium 60 on the side of the reflective electrode 32 facing away from the silicon substrate 10 within the groove 04, the light beam reflected by the reflective electrode 32 can be transmitted to the light-emitting side of the light-emitting device 03 through the transparent medium 60, preventing the reflected light beam from being blocked and thus affecting the light output. Furthermore, the transparent medium 60 can fill the groove 04 smoothly. The surface of the transparent medium 60 facing away from the silicon substrate 10 within the groove 04 remains on the same plane as the surface of the insulating layer 40 facing away from the silicon substrate 10, improving the flatness of subsequent fabrication of films such as the transparent electrode 33.

[0073] Optional, Figure 6 This is a schematic diagram of the structure of a display panel provided in an embodiment of the present utility model, as shown below. Figure 6 As shown, the first electrode 31 includes a flat portion 311 and an inclined portion 312 surrounding the flat portion 311; the inclined portion 312 extends along the sidewall of the groove 04; the flat portion 311 is electrically connected to the drive circuit 21.

[0074] The extension direction of the flattened part 311 is parallel to the plane of the silicon substrate 10.

[0075] Specifically, by providing the flattening portion 311, the first electrode 31 is electrically connected to the driving circuit 21 through the flattening portion 311, thereby increasing the contact area between the first electrode 31 and the driving circuit 21, thus improving the reliability and stability of the first electrode 31 in receiving the driving electrical signal, and consequently improving the light emission stability of the light-emitting device 03. Furthermore, the first electrode 31 also includes an inclined portion 312 surrounding the flattening portion 311, such that the inclined portion 312 forms a structure similar to a concave lens, improving the efficiency of the reflecting electrode 32 in focusing the reflected light beam.

[0076] Optional, Figure 7 This is a schematic diagram of another display panel structure provided in an embodiment of the present utility model, as shown below. Figure 7 As shown, the flattening portion 311 does not overlap with the driving circuit 21 in the thickness direction Z of the display panel 100. Thus, after the flattening portion 311 extends along the plane parallel to the silicon substrate 10, it directly contacts and electrically connects with the driving circuit 21, or is electrically connected to the driving circuit 21 through a conductive via, ensuring the stability of the electrical connection between the flattening portion 311 and the driving circuit 21.

[0077] in, Figure 7The driving circuit 21 is represented by a transistor. The driving circuit layer 20 includes a gate insulating layer 211, a gate layer 212, and a source / drain metal layer 213. The gate insulating layer 211 is located on the side of the silicon substrate 10 closest to the light-emitting device 03, the gate layer 212 is located on the side of the gate insulating layer 211 away from the silicon substrate 10, and the source / drain metal layer 213 is located on the side of the gate layer 212 away from the silicon substrate 10. The gate S0 of the transistor is disposed in the gate layer 212, and the first electrode S1 and the second electrode S2 of the transistor are disposed in the source / drain metal layer 213. The active layer of the transistor is located in the silicon substrate 10 and includes a first N-well S11 connected to the first electrode S1 and a second N-well S12 connected to the second electrode S2. Under the action of the gate S0 providing a corresponding electrical signal, the carriers in the active layer can be controlled to move directionally between the first N-well S11 and the second N-well S12, thereby forming a carrier movement channel, so that signal transmission can be performed between the first electrode S1 and the second electrode S2.

[0078] Optional, Figure 8 This is a schematic diagram of the structure of another display panel provided in an embodiment of the present utility model, as shown below. Figure 8 As shown, the flattening portion 311 overlaps with the driving circuit 21 in the thickness direction Z of the display panel 100. In this way, the flattening portion 311 can be directly electrically connected to the driving circuit 21, shortening the transmission path of electrical signals, improving the transmission efficiency of electrical signals, and increasing the display response rate of the display panel 100.

[0079] Optional, see reference Figure 8 The flattening part 311 is electrically connected to the driving circuit 21 through the conductive through-hole 22, and the flattening part 311 covers the conductive through-hole 22. In this way, the reliability of the electrical connection between the flattening part 311 and the conductive through-hole 22 can be guaranteed, thereby improving the accuracy and reliability of the flattening part 311 receiving electrical signals through the conductive through-hole 22, and improving the light-emitting display effect of the light-emitting device 03.

[0080] Optional, Figure 9 This is a schematic diagram of another display panel provided in an embodiment of the present utility model, as shown below. Figure 9 As shown, the display panel 100 also includes a planarization layer 70, which is located between the driving circuit layer 20 and the insulating layer 40; the planarization layer 70 includes a plurality of conductive vias 71.

[0081] The material of the planarization layer 70 includes SiO2 or Si3N4, which can be set according to actual needs, and no specific limitation is made here.

[0082] Specifically, after the driving circuit layer 20 is fabricated, the devices or lines on its surface may be uneven. By providing a planarization layer 70 between the driving circuit layer 20 and the insulating layer 40, the surface of the planarization layer 70 facing away from the silicon substrate 10 is made flat, which facilitates the subsequent fabrication of subsequent film layers on the planarization layer 70 and improves the flatness of the subsequent film layers. In addition, multiple conductive vias 71 can be provided in the planarization layer 70 so that the planarized part 311 can be electrically connected to the driving circuit 21 through the conductive vias 71, ensuring that the light-emitting device 03 can receive the driving electrical signal and thus display and emit light normally.

[0083] Optional, Figure 10 This is a schematic diagram of the structure of a display panel provided in an embodiment of the present utility model, as shown below. Figure 10 As shown, the display panel 100 also includes a color resist layer 80, which is located on the side of the light-emitting device layer 30 away from the silicon substrate 10. The color resist layer 80 includes a plurality of color resist structures 81 corresponding to a plurality of light-emitting devices 03. In the thickness direction Z of the display panel 100, the corresponding color resist structures 81 and light-emitting devices 03 overlap.

[0084] Specifically, when the light-emitting color of the light-emitting device 03 is the same as the light-transmitting color of the color resist structure 81, light with a different light-transmitting color than that of the color resist structure 81 can be blocked by the color resist structure 81. Light emitted by the light-emitting device 03 with the same light-transmitting color as that of the color resist structure 81 can be emitted through the color resist structure 81 to the light-emitting side of the display panel 100, thereby avoiding display crosstalk between light-emitting devices 03 with different light-emitting colors, enhancing color purity and contrast, and improving light emission effect. At the same time, by placing the color resist structure 81 at the position overlapping with the light-emitting device 03 by 3, the color resist structure 81 can replace the polarizer. Compared with the structure of the polarizer, this combination simplifies the structure of the display panel 100 and is conducive to the thinning of the display panel 100.

[0085] Optional, Figure 11 This is a schematic diagram of another display panel structure provided in an embodiment of the present utility model, as shown below. Figure 11 As shown, the display panel 100 also includes an encapsulation layer 90, which is located on the side of the light-emitting device layer 30 away from the silicon substrate 10.

[0086] The material of the encapsulation layer 90 includes silicon oxide (SiO2). x ), silicon nitride (SiN) x ), silicon oxynitride (SiON) x ), aluminum oxide (AlO) x ) or titanium dioxide (TiO) x At least one of the following, the encapsulation layer 90 can also be a multi-layer stacked encapsulation structure of inorganic layer-organic layer-inorganic layer, which can be set according to actual needs, and no specific limitation is made here.

[0087] Specifically, by setting the encapsulation layer 90 to be located on the side of the light-emitting device layer 30 away from the substrate 10, the encapsulation layer 90 can wrap each light-emitting device 03, preventing water, mist or impurities in the outside air from entering the display panel 100, so as to protect the light-emitting device 03, enable the light-emitting device 03 to display and emit light normally, and ensure the service life of the display panel 100.

[0088] Based on the same inventive concept, this utility model embodiment also provides a display device. Figure 12 This is a schematic diagram of the structure of a display device provided in an embodiment of the present utility model, as shown below. Figure 12 As shown, the display device 200 includes the display panel 100 in the above embodiments. Therefore, the display device 200 provided in this embodiment also possesses the beneficial effects of the display panel 100 described in the above embodiments, which will not be repeated here. For example, the display device 200 can be an AR (Augmented Reality) display device, a VR (Virtual Reality) display device, a mobile phone, a computer, or a television, or other electronic display devices.

[0089] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, combinations, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments. Many other equivalent embodiments may be included without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A display panel, characterized by, include: Silicon substrate; A driving circuit layer is disposed on the silicon substrate; the driving circuit layer includes a plurality of driving circuits arranged in an array. A light-emitting device layer is located on the side of the driving circuit layer opposite to the silicon substrate. The light-emitting device layer includes a plurality of light-emitting devices, each of which includes a first electrode, a reflective electrode, a transparent electrode, a light-emitting layer, and a second electrode stacked sequentially. The first electrode is electrically connected to the driving circuit. Along a direction perpendicular to the plane of the silicon substrate, the first electrode includes a conductive portion that does not overlap with the reflective electrode. The transparent electrode is in contact with the conductive portion. An insulating layer is located between the driving circuit layer and the light-emitting device layer; the insulating layer includes a plurality of grooves corresponding to each of the light-emitting devices. The first electrode and portions of the reflective electrode are located within the groove and extend along the sidewall of the groove; Along a direction perpendicular to the plane of the silicon substrate, the conductive portion does not overlap with the groove; The antioxidant properties of the first electrode are greater than those of the reflective electrode.

2. The display panel of claim 1, wherein, Also includes: A microlens array is located on the side of the light-emitting device layer facing away from the silicon substrate; the microlens array includes multiple microlenses corresponding to multiple light-emitting devices; In the thickness direction of the display panel, the corresponding microlenses and light-emitting devices overlap.

3. The display panel of claim 2, wherein, The insulating layer includes at least one sub-insulating layer; the groove includes at least one groove portion corresponding to the at least one sub-insulating layer; the angle between the sidewall of the groove portion and the plane of the silicon substrate, on the side away from the groove portion, is a first angle α. Where 8°≤α≤45°.

4. The display panel of claim 3, wherein, When the groove includes multiple groove portions, the angle α of the first included angle located in each of the groove portions gradually increases in the light emission direction of the display panel.

5. The display panel of claim 1, wherein, Also includes: A transparent medium is located within the groove and on the side of the reflective electrode opposite to the silicon substrate.

6. The display panel of claim 1, wherein, The first electrode includes a flat portion and an inclined portion surrounding the flat portion; the inclined portion extends along the sidewall of the groove; The leveling section is electrically connected to the drive circuit.

7. The display panel of claim 6, wherein, In the thickness direction of the display panel, the flattened portion does not overlap with the driving circuit.

8. The display panel of claim 6, wherein, In the thickness direction of the display panel, the flattened portion overlaps with the driving circuit.

9. The display panel of claim 6, wherein, The leveling part is electrically connected to the driving circuit through a conductive via, and the leveling part covers the conductive via.

10. The display panel of claim 9, wherein, Also includes: A planarization layer is located between the driving circuit layer and the insulating layer; the planarization layer includes a plurality of the conductive vias.

11. The display panel of claim 1, wherein, Also includes: A color resist layer is located on the side of the light-emitting device layer facing away from the silicon substrate; the color resist layer includes multiple color resist structures disposed corresponding to multiple light-emitting devices; In the thickness direction of the display panel, the corresponding color resist structure and the light-emitting device overlap.

12. The display panel of claim 1, wherein, Also includes: The encapsulation layer is located on the side of the light-emitting device layer that is away from the silicon substrate.

13. A display device comprising: include: The display panel according to any one of claims 1-12.

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