WO2022133813A1 - 显示面板和显示装置 - Google Patents

显示面板和显示装置 Download PDF

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Publication number
WO2022133813A1
WO2022133813A1 PCT/CN2020/138660 CN2020138660W WO2022133813A1 WO 2022133813 A1 WO2022133813 A1 WO 2022133813A1 CN 2020138660 W CN2020138660 W CN 2020138660W WO 2022133813 A1 WO2022133813 A1 WO 2022133813A1
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WO
WIPO (PCT)
Prior art keywords
light
anode
base substrate
display panel
emitting
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PCT/CN2020/138660
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English (en)
French (fr)
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WO2022133813A9 (zh
Inventor
黄耀
杜丽丽
吴超
龙跃
刘聪
周瑞
黄炜赟
石博
于池
王琦伟
Original Assignee
京东方科技集团股份有限公司
成都京东方光电科技有限公司
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Application filed by 京东方科技集团股份有限公司, 成都京东方光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to EP20966390.5A priority Critical patent/EP4243076A4/en
Priority to PCT/CN2020/138660 priority patent/WO2022133813A1/zh
Priority to CN202080003563.XA priority patent/CN114981974A/zh
Priority to US18/039,705 priority patent/US20230422552A1/en
Publication of WO2022133813A1 publication Critical patent/WO2022133813A1/zh
Publication of WO2022133813A9 publication Critical patent/WO2022133813A9/zh

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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/121—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/121—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements
    • H10K59/1213—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements the pixel elements being TFTs
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/122—Pixel-defining structures or layers, e.g. banks
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/123—Connection of the pixel electrodes to the thin film transistors [TFT]
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/131—Interconnections, e.g. wiring lines or terminals
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/805—Electrodes
    • H10K59/8051—Anodes
    • H10K59/80515—Anodes characterised by their shape
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/60—OLEDs integrated with inorganic light-sensitive elements, e.g. with inorganic solar cells or inorganic photodiodes
    • H10K59/65—OLEDs integrated with inorganic image sensors
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details

Definitions

  • the present disclosure relates to the field of display technology, and in particular, to a display panel and a display device.
  • Organic electroluminescent display panels (Organic Light Emitting Diode, OLED) have gradually become the mainstream of the display field due to their excellent performance such as low power consumption, high color saturation, wide viewing angle, thin thickness, and flexibility, and can be widely used in Smartphones, tablets, TVs and other terminal products.
  • the transmittance of the OLED display panel still needs to be further improved, especially in the application of the under-screen camera, that is, the camera is arranged on the back side of the display area of the screen, and the area corresponding to the under-the-screen camera can realize both display and display. camera function.
  • the OLED display panel is not conducive to ensuring a good shooting effect of the under-screen camera, and the current under-screen camera has a relatively serious glare phenomenon when taking pictures.
  • an object of the present disclosure is to provide a display panel with better light transmittance.
  • the present disclosure provides a display panel.
  • the display area of the display panel includes a first display area and a second display area, and a pixel circuit density in the first display area is smaller than a pixel circuit density in the second display area;
  • the display panel includes: a base substrate; a plurality of first pixel circuits, wherein the first pixel circuits are arranged on the base substrate and located in the second display area; a plurality of first wirings, the a first wiring is arranged on a side of the first pixel circuit away from the base substrate; a pixel definition layer is arranged on a side of the first wiring away from the base substrate, and A plurality of openings are defined; a plurality of first light emitting devices, the first light emitting devices are arranged on the side of the first trace away from the base substrate, are located in the first display area, and are connected to the first An effective light-emitting region of the light-emitting device is located in the opening, the first an
  • the first trace is directly electrically connected to the first anode through the second via hole, and there is no need to provide a raised portion electrically connected to the first trace at the periphery of the first anode, which can further improve the performance of the first display area. Moreover, there is no arrangement of raised parts, which can reduce the diffraction effect of the light irradiated on the first anode, and when the under-screen camera is set on the back of the display panel corresponding to the first display area, it can effectively improve its photographing efficiency. glare phenomenon.
  • the shape of the opening is a circle, a part of a circle, an ellipse or a part of an ellipse, and/or the shape of the first anode is a circle or an ellipse.
  • the first light emitting device includes a blue light emitting device, a red light emitting device and a green light emitting device, wherein the shape of the first anode in the blue light emitting device is a circle or an approximate circle
  • the shape of the first anode in the red light-emitting device and the green light-emitting device is an ellipse.
  • the display panel further includes: a first insulating layer, the first insulating layer is disposed on a side of the first pixel circuit away from the base substrate, and a plurality of the first wirings are disposed on the surface of the first insulating layer away from the base substrate, and electrically connected with the first pixel circuit through the first via hole passing through the first insulating layer; the second insulating layer, the second insulating layer is disposed on the surface of the first insulating layer away from the base substrate and covers the first traces, and the pixel defining layer is disposed on the side of the second insulating layer away from the base substrate, wherein, The first anode is electrically connected to the first trace through the second via hole penetrating the second insulating layer.
  • a part of the orthographic projection of the second via hole on the base substrate is covered by the orthographic projection of the effective light-emitting anode region on the base substrate, and the other part is covered by the non- The orthographic projection of the light-emitting anode region on the base substrate is covered.
  • the orthographic projection of the second via hole on the base substrate is covered by the orthographic projection of the non-light-emitting anode region on the base substrate.
  • the orthographic projection of the second via hole on the base substrate is covered by the orthographic projection of the effective light-emitting anode region on the base substrate.
  • the material for forming the first trace includes at least one of ITO and AZO.
  • the display panel further includes: a plurality of second pixel circuits and a plurality of second light emitting devices, and both the second pixel circuits and the second light emitting devices are located in the second display area
  • the connection between the second pixel circuit and the second anode in the second light-emitting device is at least one of the following: the second pixel circuit is directly connected to the second anode in the second light-emitting device through a third via hole.
  • the second anode is electrically connected to drive the second light-emitting device to emit light;
  • the display panel further includes a conductive layer, the conductive layer and the first wiring are arranged in the same layer, and the second anode passes through the first wiring.
  • the fourth via hole of the two insulating layers is electrically connected to the conductive layer, and the conductive layer is electrically connected to the second pixel circuit through the fifth via hole penetrating the first insulating layer, so as to drive the second light emission
  • the device emits light.
  • the present disclosure provides a display device.
  • the display device includes: the aforementioned display panel; an under-screen functional layer, the orthographic projection of the under-screen functional layer on the display panel and the first display area of the display panel There are overlapping areas. Therefore, the under-screen functional layer in the display device has a larger amount of light entering, and when it is an under-screen camera, the shooting quality can be effectively improved, and the glare phenomenon when taking pictures can be improved.
  • the display device has all the features and advantages of the aforementioned display panel, and details are not repeated here.
  • FIG. 1 is a schematic structural diagram of a display panel in an embodiment of the present disclosure
  • FIG. 2 is a schematic structural diagram of a display panel according to another embodiment of the present disclosure.
  • FIG. 3 is a schematic plan view of a display panel according to an embodiment of the disclosure.
  • Fig. 4 is the sectional view along A-A' in Fig. 3;
  • FIG. 5 is a schematic structural diagram of a first anode in the related art
  • FIG. 6 is a schematic structural diagram of a display panel in yet another embodiment of the disclosure.
  • FIG. 7 is a schematic structural diagram of a display panel in yet another embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram of a pixel defining layer opening and a first anode according to still another embodiment of the disclosure.
  • FIG. 9 is a schematic structural diagram of a pixel defining layer opening and a first anode in still another embodiment of the disclosure.
  • FIG. 10 is a schematic structural diagram of a pixel defining layer opening and a first anode according to still another embodiment of the disclosure.
  • FIG. 11 is a schematic structural diagram of a pixel defining layer opening and a first anode according to still another embodiment of the disclosure.
  • FIG. 12 is a schematic structural diagram of a pixel defining layer opening and a first anode in still another embodiment of the disclosure
  • FIG. 13 is a schematic structural diagram of a display panel in yet another embodiment of the disclosure.
  • FIG. 14 is a schematic structural diagram of a display panel in yet another embodiment of the disclosure.
  • FIG. 15 is a schematic structural diagram of a display device according to an embodiment of the disclosure.
  • Figure 16 is a photo taken by a camera under the screen
  • Figure 17 is a photo taken by a camera under the screen
  • Figure 18 is a photo taken by the under-screen camera.
  • the present disclosure provides a display panel.
  • the display area of the display panel includes a first display area a and a second display area b; in some embodiments, the second display area b is disposed at the outer edge of the first display area a, That is, the second display area b is arranged outside the first display area a, or the second display area b is arranged around the first display area a.
  • the first display area can be the center of the display panel, or it can be A corner of the display panel may also be located at a position close to the border and in the center of the display panel as shown in FIG. 1 .
  • the shape of the first display area a includes but is not limited to circle, ellipse, quadrilateral, pentagon , hexagons and other polygons or irregular shapes, etc.
  • the pixel circuit density in the first display area a is smaller than the pixel circuit density in the second display area b, that is, the distribution density of the pixel circuits in the first display area a (that is, corresponding to the first pixel circuit below) It is smaller than the pixel circuit distribution density in the second display area b.
  • the pixel circuit described in the text refers to a driving circuit for providing a driving voltage for the OLED light-emitting device, which may be a circuit structure such as 7T1C and 9T2C.
  • the pixel circuit is used to drive the light-emitting device (OLED device) to emit light, and includes structures such as an active layer, a gate electrode, a source-drain electrode, a storage capacitor, a data line, and a scan line.
  • the display area of the display panel further includes a third display area c, and the third display area c is located on a side of the second display area b away from the first display area a.
  • the pixel circuit density in the third display area is greater than the pixel circuit density in the second display area.
  • a small number of pixel circuits may be set in the first display area a, but it is necessary to ensure that enough light can pass through this area; in other embodiments, the pixel circuit density in the first display area may be 0, that is, no pixel circuit may be provided in the first display area, and the first light-emitting devices located in the first display area are all driven by the first pixel circuit in the second display area.
  • the distribution density of the light emitting devices in the first display area a may be less than or equal to the distribution density of the light emitting devices in the second display area b, and the distribution density of the light emitting devices in the second display area b may be less than or equal to the third display area c distribution density of light-emitting devices.
  • the distribution density of the pixel circuits in the first display area a is the smallest, which can ensure that sufficient light passes through the first display area to the back of the display panel; at the same time, through the first pixels in the second display area b
  • the circuit provides driving voltages for the light emitting devices in the first display area a, so that the display resolution (PPI) of the first display area a can be comparable to or slightly lower than other areas.
  • the display area further includes an under-screen functional area e, and the under-screen functional area e and the first display area a have an overlapping area.
  • the first display area a overlaps with the under-screen functional area e; in other embodiments, as shown in (B) in FIG.
  • a display area a is covered by the under-screen functional area e; in some other embodiments, as shown in (C) in FIG. 2 , the under-screen functional area e is covered by the first display area a.
  • the under-screen functional area refers to the area corresponding to the under-screen functional layer, that is, the back of the display panel corresponding to the under-screen functional area is used to place the under-screen functional layer (such as the under-screen camera). Therefore, it can meet the requirements of the under-screen camera for the amount of light entering, and at the same time greatly improve the screen ratio of the display panel.
  • the display panel includes: a base substrate 10 ; a plurality of first pixel circuits 21 (in the figure, only one thin film transistor connected to the light emitting device in the pixel circuit is taken as an example), The first pixel circuit 21 is arranged on the base substrate and in the second display area b; a plurality of first wirings 31 are arranged on the first pixel circuit 21 away from the base substrate 10 .
  • the pixel definition layer 40, the pixel definition layer 40 is arranged on the side of the first trace away from the base substrate 10, and defines a plurality of openings 41; a plurality of first light emitting devices 51, the first light emitting devices 51 are arranged on The first trace 31 is located at a side away from the base substrate 10 and is located in the first display area a, and the effective light-emitting area of the first light-emitting device 51 is located in the opening 41 , and the first anode 511 in the first light-emitting device 51 includes An effective light-emitting anode region 5111 and a non-light-emitting anode region 5112 disposed around the effective light-emitting anode region 5111, and the pixel defining layer 40 covers the non-light-emitting anode region 5112, wherein the first wiring 31 is connected to the first pixel circuit through the first via 61 21 is electrically connected, and is electrically connected to the first anode 511 through the second via hole 62
  • the first trace 31 is directly electrically connected to the first anode 511 through the second via hole 62 , and there is no need to provide a raised portion 510 around the first anode 511 that is electrically connected to the first trace (as shown in FIG. 5 ).
  • the raised portion 510 is the same structure as the first anode, which is used for electrical connection with the first wiring), so that the light transmittance of the first display area can be further improved; The diffraction effect of the light irradiated on the first anode is reduced, and when the under-screen camera is arranged on the back of the display panel corresponding to the first display area, the glare phenomenon of taking pictures can be effectively improved.
  • the above-mentioned effective light-emitting anode region refers to the region of the first anode located in the opening defined by the pixel defining layer, that is, the effective light-emitting region corresponding to the first light-emitting device.
  • the display panel further includes: a first insulating layer 71 disposed on the first pixel circuit 21 away from the base substrate 10, a plurality of first traces 31 are arranged on the surface of the first insulating layer 71 away from the base substrate 10, and pass through the first vias 61 penetrating the first insulating layer 71 to connect with the first traces 31.
  • the pixel circuit 21 is electrically connected; the second insulating layer 72 is provided on the surface of the first insulating layer 71 away from the base substrate 10 and covers the first wiring 31, and the pixel defining layer 40 is provided on the second insulating layer The layer 72 is on a side away from the base substrate 10 , wherein the first anode 511 is electrically connected to the first trace 31 through the second via hole 62 penetrating the second insulating layer 72 .
  • the first pixel circuit 21 is a 7T1C circuit (ie, seven transistors and one capacitor) structure, For example, it includes a driving transistor, a data writing transistor, a storage capacitor, a threshold compensation transistor, a first reset transistor, a second reset transistor, a first light emission control transistor, and a second light emission control transistor.
  • the first pixel circuit 21 includes structures such as an active layer 211, a gate electrode 212, a source-drain electrode layer 213, and the like.
  • the layer 211 is arranged on one side of the base substrate 10, the gate insulating layer 73 covers the active layer 211, the gate electrode 212 is arranged on the surface of the gate insulating layer 73 away from the base substrate 10, and the interlayer dielectric layer 74 is arranged on the gate insulating layer.
  • 61 is on the side away from the base substrate 10 and covers the gate electrode 212, and the source-drain electrode layer 213 is disposed on the side of the interlayer dielectric layer 74 away from the base substrate, wherein the source-drain electrode layer 213 passes through the gate insulating layer and the layer
  • the via hole of the intermediate dielectric layer is electrically connected to the active layer.
  • the electrical connection between the first wiring 31 and the first pixel circuit 21 is realized by the electrical connection between the first wiring 31 and the source-drain electrode layer 213 .
  • the first light emitting device 51 further includes a light emitting layer 512 and a cathode 513 .
  • the first light-emitting device 51 may further include at least one of a hole transport layer, a hole injection layer, an electron transport layer, and an electron injection layer, which can be selected flexibly by those skilled in the art according to actual design requirements That's it.
  • the material for forming the first trace includes at least one of ITO and AZO. Therefore, the first traces have higher light transmittance, which further enables the first display area to have higher light transmittance.
  • the relative position of the second via hole 62 and the first anode 511 may include the following conditions:
  • a part of the orthographic projection of the second via hole 62 on the base substrate 10 is covered by the orthographic projection of the effective light-emitting anode region 5111 on the base substrate 10 , and the other part is covered by the non-light-emitting anode region
  • the orthographic projection of the second via hole 62 on the base substrate 10 is covered by the orthographic projection of the non-light-emitting anode region 5112 on the base substrate 10. Orthographic coverage; in still other embodiments, referring to FIG.
  • the display panel with the above structure can effectively improve the light transmittance of the first display area, and can also reduce the diffraction of light irradiated on the first anode, thereby improving the glare phenomenon when taking pictures by the under-screen camera.
  • the shape of the opening 41 of the pixel defining layer is a circle, a part of a circle, an ellipse or a part of an ellipse, and/or the shape of the first anode is a circle or an ellipse. Therefore, the above-mentioned shape of the opening and the first anode is conducive to utilizing the opening of the FMM mask to a greater extent to vaporize more luminescent materials (EL materials) and improve the life of the first luminescent device.
  • the first anode is circular, and the shape of the opening is also circular; in some embodiments, the first anode is formed in an oval shape, and the shape of the opening is oval or circular.
  • the specific shapes of the first anode 511 and the opening 41 and the positional relationship between the second via hole 62 and the first anode 511 and the opening 41 can be as follows:
  • the orthographic projection of the second via hole 62 on the base substrate 10 is covered by the orthographic projection of the non-light-emitting anode region 5112 on the base substrate 10 , wherein the shape of the first anode 511 is A circle or an ellipse, the shape of the opening 41 defined by the pixel defining layer (or the shape of the effective light-emitting anode region 5111 ) is a part of a circle or a part of an ellipse.
  • the width of the non-light-emitting anode region 5112 is small, that is, the distance between the edge of the first anode 511 and the opening 41 is small, so that as much EL material can be evaporated as possible, and the life of the first light-emitting device can be improved.
  • the part of the circle means that the circle has a notch, which causes the circle to be incomplete.
  • the part of the ellipse means that the ellipse has a notch, which causes the circle to be incomplete.
  • the orthographic projection of the second via hole 62 on the base substrate 10 is covered by the orthographic projection of the non-light-emitting anode region 5112 on the base substrate 10 , wherein the shape of the first anode 511 It is a circle or an ellipse, and the shape of the opening 41 defined by the pixel defining layer (or the shape of the effective light-emitting anode region 5111 ) is a circle or an ellipse.
  • the first anode 511 has a The shape and size do not change, the difference is that the size of the shape of the opening 41 becomes smaller, so that the orthographic projection of the second via hole 62 on the base substrate 10 is covered by the orthographic projection of the non-light-emitting anode region 5112 on the base substrate 10 . Therefore, the effective light-emitting anode region 5111 can have a complete circular or elliptical structure, and the distance between the edge of the first anode 511 and the opening 41 is kept as small as possible.
  • a part of the orthographic projection of the second via hole 62 on the base substrate 10 is covered by the orthographic projection of the effective light-emitting anode region 5111 on the base substrate 10 , and the other part is covered by the orthographic projection of the effective light-emitting anode region 5111 on the base substrate 10
  • the orthographic coverage of the non-light-emitting anode region 5112 on the base substrate 10, wherein the shape of the first anode 511 is a circle or an ellipse, and the shape of the opening 41 defined by the pixel defining layer (or the size of the effective light-emitting anode region 5111) shape) is circular or oval.
  • the width of the non-light-emitting anode region 5112 is small, that is, the distance between the edge of the first anode 511 and the opening 41 is small, so that as much EL material can be evaporated as possible, and the life of the first light-emitting device can be improved.
  • the orthographic projection of the second via hole 62 on the base substrate 10 is covered by the orthographic projection of the effective light-emitting anode region 5111 on the base substrate 10 , wherein the shape of the first anode 511
  • the shape of the opening 41 defined by the pixel defining layer (or the shape of the effective light-emitting anode region 5111 ) is a circle or an ellipse. Therefore, the width of the non-light-emitting anode region 5112 is small, that is, the distance between the edge of the first anode 511 and the opening 41 is small, so that as much EL material can be evaporated as possible, and the life of the first light-emitting device can be improved.
  • the first light-emitting device includes a blue light-emitting device, a red light-emitting device, and a green light-emitting device, wherein the shape of the first anode in the blue light-emitting device is a circle or an ellipse that is approximately a circle , the shape of the first anode in the red light-emitting device and the green light-emitting device is an ellipse.
  • the luminous efficiency of the first light emitting device can be improved as much as possible.
  • the approximately circular ellipse means that the long axis and the short axis of the ellipse are relatively similar, and the specific size of the difference between the short axis and the long axis can be flexibly designed by those skilled in the art according to the actual situation, No limitation is required here.
  • the ratio of the hollow area of the first display area in the display panel of the present disclosure is increased from 91.419% to 92.208%, effectively increasing the The transmittance of a display area.
  • the first anode area is not defined in the first display area, and other areas are defined as hollow areas, and the area of the hollow areas is the hollow area.
  • the display panel further includes: a plurality of second pixel circuits 22 and a plurality of second light emitting devices 52 , and the second pixel circuits 22 and the second light emitting devices 52 Both are located in the second display area b, and the connection between the second pixel circuit 22 and the second anode 521 in the second light-emitting device 52 is at least one of the following:
  • the second pixel circuit 22 is directly electrically connected to the second anode 521 in the second light emitting device 52 through the third via hole 63 to drive the second light emitting device 52 to emit light, wherein the third The via hole 63 penetrates the first insulating layer 71 and the second insulating layer 72 , and the second anode 521 is electrically connected to the source-drain electrode layer 223 in the second pixel circuit through the third via hole 63 .
  • the display panel further includes a conductive layer 32 , the conductive layer 32 is disposed on the same layer as the first wiring 31 , and the second anode 521 is connected to the second anode 521 through the fourth via 64 penetrating the second insulating layer 72 .
  • the conductive layer 32 is electrically connected, and the conductive layer 32 is electrically connected to the second pixel circuit 22 through the fifth via 65 penetrating the first insulating layer 71 (that is, the conductive layer 32 is electrically connected to the source-drain electrode layer 223 in the second pixel circuit. connection) to drive the second light emitting device 52 to emit light.
  • the second pixel circuit and the second anode are electrically connected through the conductive layer 32, which can help to reduce the resistance between the second anode and the source-drain electrode layer.
  • the second light-emitting device 52 includes a light-emitting layer 522 and a cathode 523 in addition to the aforementioned second anode 521 .
  • the second light-emitting device 52 may further include at least one of the structures of a hole transport layer, a hole injection layer, an electron transport layer, and an electron injection layer, which can be selected flexibly by those skilled in the art according to actual design requirements That's it.
  • the second pixel circuit 22 includes an active layer 221 , a gate electrode 222 , a source-drain electrode layer 223 and other structures, wherein the active layer 221 is disposed on one side of the base substrate 10 , and the gate insulating
  • the layer 73 covers the active layer 221
  • the gate 222 is arranged on the surface of the gate insulating layer 73 away from the base substrate
  • the interlayer dielectric layer 74 is arranged on the side of the gate insulating layer 73 away from the base substrate, and covers the gate 222
  • the source-drain electrode layer 223 is disposed on the side of the interlayer dielectric layer 74 away from the base substrate, wherein the source-drain electrode layer 223 is electrically connected to the active layer through vias penetrating the gate insulating layer and the interlayer dielectric layer, as shown in the figure. 12 and FIG. 13 , the source-drain electrode layer 223 in the second pixel circuit is electrically connected to the second anode 521 .
  • the first pixel circuits 21 and the second pixel circuits 22 are distributed in an array in the first direction X and the second direction Y, wherein, in order to ensure uniform brightness in the second display area, a plurality of The first pixel circuit 21 and the second pixel circuit 22 can be evenly distributed, and the specific setting method can be flexibly selected by those skilled in the art according to the specific situation of your arrangement of the pixel units, which is not limited here.
  • the shape of the second anode can be designed as a conventional shape in conventional technologies; in other embodiments, the shape of the second anode can be designed as a circle or an ellipse that is the same as the shape of the first anode.
  • the present disclosure provides a display device.
  • the display device includes: the aforementioned display panel 100 ; an under-screen functional layer 200 , and the orthographic projection of the under-screen functional layer 200 on the display panel 100 is the same as that of the display panel 100 .
  • the first display area a of the display panel 100 has an overlapping area. Therefore, the under-screen functional layer in the display device has a larger amount of light entering, and when it is an under-screen camera, the shooting quality can be effectively improved, and the glare phenomenon when taking pictures can be improved.
  • the display device has all the features and advantages of the aforementioned display panel, and details are not repeated here.
  • FIG. 17 and FIG. 18 (a) in FIG. 16 is that the first anode is provided with a raised portion, and the corresponding photo taken by the under-screen camera in the display device, there are many in this photo.
  • the white point is the bad image caused by the glare phenomenon, and it can also be clearly seen in the dotted frame in (a) in Figure 17 and (a) in Figure 18 that the photos taken by the under-screen camera in the display device exist due to The bad image caused by the glare; and in (b) of FIG.
  • FIG. 16 is a photo taken by the under-screen camera in the display device of the present disclosure under the same conditions, from this comparison, it can be seen that there is almost no white spot in (b) of FIG. 16 , Moreover, compared with (a) in FIG. 17 and (a) in FIG. 18 , in (b) in FIG. 17 and (b) in FIG. 18 , there is no bad image due to glare. It can be seen that the under-screen camera in the display device of the present disclosure can greatly improve the undesirable phenomenon of glare when shooting.
  • the off-screen functional layer may be an off-screen camera. In this way, the screen-to-screen ratio of the display panel can be increased, and the requirements of the under-screen camera for the amount of light entering can be met.
  • the above-mentioned display device also has the necessary structures and components for conventional display devices. Taking a mobile phone as an example, it may also include a cover plate. , Motherboard. Necessary structures and components such as back cover and middle frame.
  • the display device may also include necessary structures or components for conventional display devices.
  • the display panel and the functional layer under the screen may also include structures or components such as a touch module, a glass cover, a casing, a voice module, and a CPU.

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Abstract

本公开提供了显示面板和显示装置。显示面板的显示区包括第一显示区和第二显示区，第一显示区中的像素电路密度小于第二显示区中的像素电路密度；显示面板包括：衬底基板；第一像素电路设置在衬底基板上，且位于第二显示区内；多条第一走线设置在第一像素电路远离衬底基板的一侧；像素界定层设置在第一走线远离衬底基板的一侧，且限定出多个开口；多个第一发光器件设置在第一走线远离衬底基板的一侧，且位于第一显示区中，并位于开口中，像素界定层覆盖第一发光器件中的第一阳极的非发光阳极区，第一走线通过第一过孔与第一像素电路电连接，且通过第二过孔与第一阳极电连接，且第二过孔在衬底基板上的正投影位于第一阳极在衬底基板上的正投影内部。

Description

显示面板和显示装置 技术领域
本公开涉及显示技术领域，具体的，涉及显示面板和显示装置。
背景技术
有机电致发光显示面板(Organic Light Emitting Diode，OLED)凭借其低功耗、高色饱和度、广视角、薄厚度、能实现柔性化等优异性能，逐渐成为显示领域的主流，可以广泛应用于智能手机、平板电脑、电视等终端产品。但是，OLED显示面板的透光率仍需要进一步提高，尤其是在屏下摄像头的应用中，即将摄像头设置在屏幕的显示区的背侧，屛下摄像头对应的区域既可实现显示、又可实现拍照功能。目前由于较差的透过率，OLED显示面板不利于保证屏下摄像头良好的拍摄效果，而且目前的屏下摄像头拍照有比较严重的眩光现象。
因此，关于OLED显示面板的研究有待深入。
发明内容
本公开旨在至少在一定程度上解决相关技术中的技术问题之一。为此，本公开的一个目的在于提出一种显示面板，该显示面板中的透光率较佳。
在本公开的一方面，本公开提供了一种显示面板。根据本公开的实施例，所述显示面板的显示区包括第一显示区和第二显示区，所述第一显示区中的像素电路密度小于所述第二显示区中的像素电路密度；所述显示面板包括：衬底基板；多个第一像素电路，所述第一像素电路设置在所述衬底基板上，且位于所述第二显示区内；多条第一走线，所述第一走线设置在所述第一像素电路远离所述衬底基板的一侧；像素界定层，所述像素界定层设置在所述第一走线远离所述衬底基板的一侧，且限定出多个开口；多个第一发光器件，所述第一发光器件设置在所述第一走线远离所述衬底基板的一侧，且位于所述第一显示区中，并第一发光器件的有效发光区位于所述开口中，所述第一发光器件中的第一阳极包括有效发光阳极区和围绕所述有效发光阳极区设置的非发光阳极区，且所述像素界定层覆盖所述非发光阳极区，其中，所述第一走线通过第一过孔与所述第一像素电路电连接，且通过第二过孔与所述第一阳极电连接，且所述第二过孔在所述衬底基板上的正投影位于所述第一阳极在所述衬底基板上的正投影内部。由此，第一走线通过第二过孔直接与第一阳极电连接，而无需在第一阳极的周边设置与第一走线电连接的凸起部，如此可以进一步提高第一 显示区的透光率；而且，没有凸起部的设置，可以减少照射到第一阳极上的光线的衍射作用，当第一显示区对应的显示面板的背面设置屏下摄像头时，可以有效改善其拍照的眩光现象。
根据本公开的实施例，所述开口的形状为圆形、圆形的一部分、椭圆形或椭圆形的一部分，和/或所述第一阳极的形状为圆形或椭圆形。
根据本公开的实施例，所述第一发光器件包括蓝色发光器件、红色发光器件和绿色发光器件，其中，所述蓝色发光器件中的所述第一阳极的形状为圆形或近似圆形的椭圆形，所述红色发光器件和所述绿色发光器件中的所述第一阳极的形状为椭圆形。
根据本公开的实施例，显示面板还包括：第一绝缘层，所述第一绝缘层设置在所述第一像素电路远离所述衬底基板的一侧，多条所述第一走线设置在所述第一绝缘层远离衬底基板的表面上，并通过贯穿所述第一绝缘层的所述第一过孔与所述第一像素电路电连接；第二绝缘层，第二绝缘层设置在所述第一绝缘层远离所述衬底基板的表面上，且覆盖所述第一走线，所述像素界定层设置在所述第二绝缘层远离衬底基板的一侧，其中，所述第一阳极通过贯穿所述第二绝缘层的所述第二过孔与所述第一走线电连接。
根据本公开的实施例，所述第二过孔在所述衬底基板上的正投影的一部分被所述有效发光阳极区在所述衬底基板上的正投影覆盖，另一部分被所述非发光阳极区在所述衬底基板上的正投影覆盖。
根据本公开的实施例，所述第二过孔在所述衬底基板上的正投影被所述非发光阳极区在所述衬底基板上的正投影覆盖。
根据本公开的实施例，所述第二过孔在所述衬底基板上的正投影被所述有效发光阳极区在所述衬底基板上的正投影覆盖。
根据本公开的实施例，形成第一走线的材料包括ITO和AZO中的至少一种。
根据本公开的实施例，所述显示面板还包括：多个第二像素电路和多个第二发光器件，且所述第二像素电路和所述第二发光器件均位于所述第二显示区内，所述第二像素电路与所述第二发光器件中的第二阳极的连接方式为以下至少之一：所述第二像素电路通过第三过孔直接与所述第二发光器件中的第二阳极电连接，以驱动所述第二发光器件发光；所述显示面板还包括导电层，所述导电层与所述第一走线同层设置，所述第二阳极通过贯穿所述第二绝缘层的第四过孔与所述导电层电连接，所述导电层通过贯穿所述第一绝缘层的第五过孔与所述第二像素电路电连接，以驱动所述第二发光器件发光。
在本公开的另一方面，本公开提供了一种显示装置。根据本公开的实施例，所述显示装置包括：前面所述的显示面板；屏下功能层，所述屏下功能层在所述显示面板上的正投 影与所述显示面板的第一显示区有重叠区域。由此，该显示装置中的屏下功能层具有较大的进光量，当其为屏下摄像头时，可以有效提高其拍摄质量，改善其拍照时的眩光现象。本领域技术人员可以理解，该显示装置具有前面所述显示面板的所有特征和优点，在此不再过多的赘述。
附图说明
图1是本公开一个实施例中显示面板的结构示意图；
图2为本公开另一个实施例中显示面板的结构示意图；
图3为本公开有一个实施例中显示面板的平面结构示意图；
图4为图3中沿A-A’的截面图；
图5为相关技术中第一阳极的结构示意图；
图6为本公开又一个实施例中显示面板的结构示意图；
图7为本公开又一个实施例中显示面板的结构示意图；
图8为本公开又一个实施例中像素界定层开口与第一阳极的结构示意图；
图9为本公开又一个实施例中像素界定层开口与第一阳极的结构示意图；
图10为本公开又一个实施例中像素界定层开口与第一阳极的结构示意图；
图11为本公开又一个实施例中像素界定层开口与第一阳极的结构示意图；
图12为本公开又一个实施例中像素界定层开口与第一阳极的结构示意图；
图13为本公开又一个实施例中显示面板的结构示意图；
图14为本公开又一个实施例中显示面板的结构示意图；
图15为本公开一个实施例中显示装置的结构示意图
图16为屏下摄像头拍摄的照片；
图17为屏下摄像头拍摄的照片；
图18为屏下摄像头拍摄的照片。
发明详细描述
下面详细描述本公开的实施例。下面描述的实施例是示例性的，仅用于解释本公开，而不能理解为对本公开的限制。实施例中未注明具体技术或条件的，按照本领域内的文献所描述的技术或条件或者按照产品说明书进行。
在本公开的一方面，本公开提供了一种显示面板。根据本公开的实施例，所述显示面板的显示区包括第一显示区a和第二显示区b；在一些实施例中，第二显示区b设置在所述第 一显示区a外边缘，即是指第二显示区b设置在第一显示区a外侧，或者说第二显示区b设置在第一显示区a周边。另外，第一显示区a的具体设置位置也没有特别的要求，本领域技术人员可以根据对屏下功能区的实际设计要求灵活选择，比如第一显示区可以为显示面板的中央，也可以为显示面板的一个角落，还可以如图1所示位于显示面板靠近边框且居中的位置。
而且，第一显示区a的具体形状也没有特殊要求，本领域技术人员可以根据实际情况灵活选择，比如，第一显示区a的形状包括但不限于圆形，椭圆形，四边形、五边形、六边形等多边形或不规则图形等。
其中，第一显示区a中的像素电路密度小于第二显示区b中的像素电路密度，也就是说，第一显示区a中的像素电路(即对应下文中的第一像素电路)分布密度小于第二显示区b中的像素电路分布密度。需要说明的是，文中所述的像素电路指的是用于为OLED发光器件提供驱动电压的驱动电路，可以是7T1C、9T2C等电路结构。需要说明的是，像素电路用于驱动发光器件(OLED器件)发光，包括有源层、栅极、源漏电极、存储电容、数据线、扫描线等结构。
另外，如图1所示，显示面板的显示区还包括第三显示区c，第三显示区c位于第二显示区b远离第一显示区a的一侧。其中，第三显示区中的像素电路密度大于第二显示区的像素电路密度。在一些实施例中，第一显示区a中可以设置少量的像素电路，不过需要确保该区域能够有足够的光线透过；在另一些实施例中，第一显示区中的像素电路密度可以为0，即第一显示区中可以不设置像素电路，位于第一显示区的第一发光器件均由第二显示区中的第一像素电路驱动。
此外，第一显示区a的发光器件的分布密度可以是小于或者等于第二显示区b的发光器件分布密度，第二显示区b的发光器件的分布密度可以是小于或者等于第三显示区c的发光器件分布密度。基于上述结构，第一显示区a中的像素电路的分布密度是最小的，可以保证充足的光线透过第一显示区到达显示面板的背面；同时，通过第二显示区b中的第一像素电路为第一显示区中a的发光器件提供驱动电压，使得第一显示区a的显示分辨率(PPI)能够与其他区域相当或者稍低于其他区域。
根据本公开的实施例，参照图2，显示区还包括屏下功能区e，屏下功能区e与第一显示区a具有交叠区域。在一些具体实施例中，如图2中的(A)所示，第一显示区a与屏下功能区e重叠；在另一些实施例中，如图2中的(B)所示，第一显示区a被屏下功能区e覆盖；在又一些实施例中，如图2中(C)图所示，屏下功能区e被第一显示区a覆盖。其中，屏下功能区是指对应设置屏下功能层的区域，即屏下功能区对应的显示面板的背面用于放置屏下功能层(比如屏下摄像头)，由于第一显示区具有较高透光率，所以可以满足屏 下摄像头对进光量的要求，同时大大提高显示面板的屏占比。
根据本公开的实施例，参照图3和图4，显示面板包括：衬底基板10；多个第一像素电路21(图中仅以像素电路中与发光器件相连的一个薄膜晶体管为例)，第一像素电路21设置在衬底基板上，且所述第二显示区b内；多条第一走线31，所述第一走线31设置在第一像素电路21远离衬底基板10的一侧；像素界定层40，像素界定层40设置在第一走线远离衬底基板10的一侧，且限定出多个开口41；多个第一发光器件51，第一发光器件51设置在第一走线31远离衬底基板10的一侧，且位于第一显示区a中，并第一发光器件51的有效发光区位于开口41中，第一发光器件51中的第一阳极511包括有效发光阳极区5111和围绕有效发光阳极区5111设置的非发光阳极区5112，且像素界定层40覆盖非发光阳极区5112，其中，第一走线31通过第一过孔61与第一像素电路21电连接，且通过第二过孔62与第一阳极511电连接，且第二过孔62在衬底基板10上的正投影位于第一阳极511在衬底基板10上的正投影内部。由此，第一走线31通过第二过孔62直接与第一阳极511电连接，而无需在第一阳极511的周边设置与第一走线电连接的凸起部510(如图5所示，该凸起部510是与第一阳极相同的结构，用于与第一走线电连接)，如此可以进一步提高第一显示区的透光率；而且，没有凸起部的设置，可以减少照射到第一阳极上的光线的衍射作用，当第一显示区对应的显示面板的背面设置屏下摄像头时，可以有效改善其拍照的眩光现象。
其中，上述的有效发光阳极区是指位于像素界定层限定出的开口内中的第一阳极的区域，即对应第一发光器件的有效发光区。
根据本公开的实施例，参照图4，图4为图3中沿AA’的截面图，显示面板还包括：第一绝缘层71，所述第一绝缘层71设置在所述第一像素电路21远离衬底基板10的一侧，多条第一走线31设置在第一绝缘层71远离衬底基板10的表面上，并通过贯穿第一绝缘层71的第一过孔61与第一像素电路21电连接；第二绝缘层72，第二绝缘层72设置在第一绝缘层71远离衬底基板10的表面上，且覆盖第一走线31，像素界定层40设置在第二绝缘层72远离衬底基板10的一侧，其中，第一阳极511通过贯穿第二绝缘层72的所述第二过孔62与第一走线31电连接。
其中，第一像素电路21的具体结构没有特殊要求，本领域技术人员可以根据实际情况灵活选择，在一些实施例中，第一像素电路21为7T1C电路(即七个晶体管和一个电容)结构，例如包括驱动晶体管、数据写入晶体管、存储电容、阈值补偿晶体管、第一复位晶体管、第二复位晶体管、第一发光控制晶体管以及第二发光控制晶体管。第一像素电路21的纵向结构也没有特殊要求，在一些实施例中，参照图4，第一像素电路21包括有源层211、 栅极212、源漏电极层213等结构，其中，有源层211设置在衬底基板10的一侧，栅绝缘层73覆盖有源层211，栅极212设置在栅绝缘层73远离衬底基板10的表面上，层间介质层74设置在栅绝缘层61远离衬底基板10的一侧，且覆盖栅极212，源漏电极层213设置在层间介质层74远离衬底基板的一侧，其中，源漏电极层213通过贯穿栅绝缘层和层间介质层的过孔与有源层电连接。其中，如图4所示，第一走线31与第一像素电路21的电连接是通过第一走线31与源漏电极层213电连接实现的。
另外，参照图4，第一发光器件51除了包括前面所述的第一阳极511之外，还包括发光层512和阴极513。在一些实施例中，第一发光器件51还可以包括空穴传输层、空穴注入层、电子传输层能和电子注入层等结构中的至少之一，本领域技术人员根据实际设计要求灵活选择即可。
根据本公开的实施例，形成第一走线的材料包括ITO和AZO中的至少一种。由此，第一走线具有较高的透光率，进而进一步使得第一显示区具有较高的透光率。
根据本公开的实施例，第二过孔62与第一阳极511的相对位置可以包括以下情况：
在一些实施例中，参照图4，第二过孔62在衬底基板10上的正投影的一部分被有效发光阳极区5111在衬底基板10上的正投影覆盖，另一部分被非发光阳极区5112在衬底基板10上的正投影覆盖；在另一些实施例中，参照图6，第二过孔62在衬底基板10上的正投影被非发光阳极区5112在衬底基板10上的正投影覆盖；在又一些实施例中，参照图7，第二过孔62在衬底基板10上的正投影被有效发光阳极区5111在衬底基板10上的正投影覆盖。由此，上述结构的显示面板尽可以有效提高第一显示区的透光率，而且还可以降低照射到第一阳极上的光线的衍射，进而改善屏下摄像头拍照时的眩光现象。
根据本公开的实施例，像素界定层的开口41的形状为圆形、圆形的一部分、椭圆形或椭圆形的一部分，和/或第一阳极的形状为圆形或椭圆形。由此，上述形状的开口和第一阳极，有利于较大程度的利用FMM掩膜板的开口，蒸镀更多的发光材料(EL材料)，提高第一发光器件的寿命。在一些实施例中，第一阳极为圆形，则开口的形状也为圆形；在一些实施例中，第一阳极的形成为椭圆形，则开口的形状为椭圆形或圆形。其中，第一阳极511、开口41的具体形状以及第二过孔62与第一阳极511和开口41的位置关系可如下所示：
在一些实施例中，参照图8，第二过孔62在衬底基板10上的正投影被非发光阳极区5112在衬底基板10上的正投影覆盖，其中，第一阳极511的形状为圆形或椭圆形，像素界定层限定出的开口41的形状(或者说有效发光阳极区5111的形状)为圆形的一部分或椭圆形的一部分。由此，非发光阳极区5112的宽度较小，即第一阳极511的边缘与开口41之间的间距较小，由此可以尽可能多的蒸镀EL材料，提高第一发光器件的寿命。其中，需要说 明的是，圆形的一部分是指圆形具有一个缺口，导致圆形不完整，同理，椭圆形的一部分是指椭圆具有一个缺口，导致圆形不完整。
在另一些实施例中，参照图9，第二过孔62在衬底基板10上的正投影被非发光阳极区5112在衬底基板10上的正投影覆盖，其中，第一阳极511的形状为圆形或椭圆形，像素界定层限定出的开口41的形状(或者说有效发光阳极区5111的形状)为圆形或椭圆形，其相比与图8中的结构，第一阳极511的形状和大小没有变化，不同的是，开口41的形状的尺寸变小，使得第二过孔62在衬底基板10上的正投影被非发光阳极区5112在衬底基板10上的正投影覆盖。由此，有效发光阳极区5111可以具有完整的圆形或椭圆形结构，并尽量保持了第一阳极511的边缘与开口41之间较小的间距。
在又一些实施例中，参照图10和图11，第二过孔62在衬底基板10上的正投影的一部分被有效发光阳极区5111在衬底基板10上的正投影覆盖，另一部分被非发光阳极区5112在衬底基板10上的正投影覆盖，其中，第一阳极511的形状为圆形或椭圆形，像素界定层限定出的开口41的形状(或者说有效发光阳极区5111的形状)为圆形或椭圆形。由此，非发光阳极区5112的宽度较小，即第一阳极511的边缘与开口41之间的间距较小，由此可以尽可能多的蒸镀EL材料，提高第一发光器件的寿命。
在又一些实施例中，参照图12，第二过孔62在衬底基板10上的正投影被有效发光阳极区5111在衬底基板10上的正投影覆盖，其中，第一阳极511的形状为圆形或椭圆形，像素界定层限定出的开口41的形状(或者说有效发光阳极区5111的形状)为圆形或椭圆形。由此，非发光阳极区5112的宽度较小，即第一阳极511的边缘与开口41之间的间距较小，由此可以尽可能多的蒸镀EL材料，提高第一发光器件的寿命。
当然，在同一产品中(即同一显示面板中)，本领域技术人员可以根据实际需求将上述图8至图12中的第二过孔与第一阳极以及像素界定层开口的具体设置情况灵活结合，得到性能较佳显示面板。
根据本公开的实施例，第一发光器件包括蓝色发光器件、红色发光器件和绿色发光器件，其中，蓝色发光器件中的所述第一阳极的形状为圆形或近似圆形的椭圆形，红色发光器件和绿色发光器件中的第一阳极的形状为椭圆形。由此，可以尽可能提高第一发光器件的发光效率。需要说明的是，近似圆形的椭圆形是指椭圆形的长轴和短轴比较相近，且短轴和长轴之间的差值的具体大小本领域技术人员根据实际情况灵活设计即可，在此不作限制要求。
根据本公开的实施例，相比第一阳极周边设置凸起部的技术方案，本公开的显示面板中的第一显示区的镂空面积的比例由91.419％提升至92.208％，有效增大了第一显示区的透 光率。其中，定义第一显示区中除去设置第一阳极区域，其他区域定义为镂空区域，该镂空区域的面积即为镂空面积。
根据本公开的实施例，参照图3、图13和图14，显示面板还包括：多个第二像素电路22和多个第二发光器件52，且第二像素电路22和第二发光器件52均位于第二显示区b内，第二像素电路22与第二发光器件52中的第二阳极521的连接方式为以下至少之一：
在一些实施例中，参照图13，第二像素电路22通过第三过孔63直接与第二发光器件52中的第二阳极521电连接，以驱动第二发光器件52发光，其中，第三过孔63贯穿第一绝缘层71和第二绝缘层72，第二阳极521通过第三过孔63与第二像素电路中的源漏电极层223电连接。
在另一些实施例中，参照图14，显示面板还包括导电层32，导电层32与第一走线31同层设置，第二阳极521通过贯穿第二绝缘层72的第四过孔64与导电层32电连接，导电层32通过贯穿所述第一绝缘层71的第五过孔65与第二像素电路22电连接(即导电层32与第二像素电路中的源漏电极层223电连接)，以驱动第二发光器件52发光。由此，通过导电层32将第二像素电路与第二阳极电连接，可以有助于降低第二阳极与源漏电极层之间的阻抗。
其中，参照图13和图14，第二发光器件52除了包括前面所述的第二阳极521之外，还包括发光层522和阴极523。在一些实施例中，第二发光器件52还可以包括空穴传输层、空穴注入层、电子传输层能和电子注入层等结构中的至少之一，本领域技术人员根据实际设计要求灵活选择即可。
其中，参照图13和图14，第二像素电路22包括有源层221、栅极222、源漏电极层223等结构，其中，有源层221设置在衬底基板10的一侧，栅绝缘层73覆盖有源层221，栅极222设置在栅绝缘层73远离衬底基板的表面上，层间介质层74设置在栅绝缘层73远离衬底基板的一侧，且覆盖栅极222，源漏电极层223设置在层间介质层74远离衬底基板的一侧，其中，源漏电极层223通过贯穿栅绝缘层和层间介质层的过孔与有源层电连接，且如图12和图13所示，第二像素电路中源漏电极层223与第二阳极521电连接。
在一些实施例中，参照图3，第一像素电路21和第二像素电路22在第一方向X和第二方向Y上阵列分布，其中，为了保证第二显示区内的亮度均匀，多个第一像素电路21和第二像素电路22可以均匀分散设置，具体的设置方式，本领域技术人员可以根据对像素单元您的排布等具体情况灵活选择，在此不作限制要求。
根据本公开的实施例，第二阳极的形状没有特殊要求，本领域技术人员可以根据实际需求灵活选择。在一些实施例中，第二阳极的形状可以设计为常规技术中的常规形状；在 另一些实施例中，第二阳极的形状可以设计为与第一阳极形状相同的圆形或椭圆形。
在本公开的另一方面，本公开提供了一种显示装置。根据本公开的实施例，参照图15，所述显示装置包括：前面所述的显示面板100；屏下功能层200，所述屏下功能层200在所述显示面板100上的正投影与所述显示面板100的第一显示区a有重叠区域，或者说，屏下功能层200在显示面板100上的正投影与显示面板100的屏下功能区重叠。由此，该显示装置中的屏下功能层具有较大的进光量，当其为屏下摄像头时，可以有效提高其拍摄质量，改善其拍照时的眩光现象。本领域技术人员可以理解，该显示装置具有前面所述显示面板的所有特征和优点，在此不再过多的赘述。
根据本公开的实施例，如前所述，由于本公开中的第一阳极不需要设置与第一走线电连接的凸起部，进而可以有效改善屏下摄像头拍照时的眩光现象，具体的可参照图16、图17和图18所示，图16中的(a)为第一阳极设置有凸起部，其对应的显示装置中屏下摄像头拍摄的照片，在该照片中有较多的白点，即为眩光现象产生的不良影像，以及图17中的(a)和图18中的(a)中虚线框中也可以明显看出其显示装置中屏下摄像头拍摄的照片存在由于眩光产生的不良影像；而图16中的(b)中为本公开的显示装置中的屏下摄像头在相同条件拍摄的照片，由此对比可见，图16中的(b)几乎没有白点，而且相比图17中的(a)和图18中的(a)，图17中的(b)和图18中的(b)中也不存在因眩光产生的不良影像。由此可见，本公开的显示装置中的屏下摄像头拍摄时可以大大改善眩光的不良现象。
根据本公开的实施例，屏下功能层的具体种类结构没有特护要求，本领域技术人员可以根据实际情况灵活选择。在一些具体实施例中，屏下功能层可以为屏下摄像头。由此，既可以提高显示面板的占屏比，又满足屏下摄像头对进光量的要求。
根据本公开的实施例，上述显示装置的具体种类没有特殊要求，本领域技术人员可以根据实际情况灵活选择，比如可以为手机、笔记本、电脑等具有显示功能的显示装置。而且，本领域技术人员可以理解，上述显示装置除了前面所述的显示面板和屏下功能层之外，还具备常规显示装置所必备的结构和部件，以手机为例，还可以包括盖板、主板。后盖、中框等必备的结构和部件。
本领域技术人员可以理解，该显示装置除了包括前面所述的显示面板和屏下功能层，还可以包括常规显示装置所必备的结构或部件，以手机为例，除了前面所述的显示面板和屏下功能层，还可以包括触控模组、玻璃盖板、壳体、语音模组、CPU等结构或部件。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、 “具体示例”或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本公开的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式结合。此外，在不相互矛盾的情况下，本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。
尽管上面已经示出和描述了本公开的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本公开的限制，本领域的普通技术人员在本公开的范围内可以对上述实施例进行变化、修改、替换和变型。

Claims (10)

  1. 一种显示面板，其特征在于，所述显示面板的显示区包括第一显示区和第二显示区，所述第一显示区中的像素电路密度小于所述第二显示区中的像素电路密度；所述显示面板包括：
    衬底基板；
    多个第一像素电路，所述第一像素电路设置在所述衬底基板上，且位于所述第二显示区内；
    多条第一走线，所述第一走线设置在所述第一像素电路远离所述衬底基板的一侧；
    像素界定层，所述像素界定层设置在所述第一走线远离所述衬底基板的一侧，且限定出多个开口；
    多个第一发光器件，所述第一发光器件设置在所述第一走线远离所述衬底基板的一侧，且位于所述第一显示区中，并所述第一发光器件的有效发光区位于所述开口中，所述第一发光器件中的第一阳极包括有效发光阳极区和围绕所述有效发光阳极区设置的非发光阳极区，且所述像素界定层覆盖所述非发光阳极区；
    其中，所述第一走线通过第一过孔与所述第一像素电路电连接，且通过第二过孔与所述第一阳极电连接，且所述第二过孔在所述衬底基板上的正投影位于所述第一阳极在所述衬底基板上的正投影内部。
  2. 根据权利要求1所述的显示面板，其特征在于，所述开口的形状为圆形、圆形的一部分、椭圆形或椭圆形的一部分，和/或所述第一阳极的形状为圆形或椭圆形。
  3. 根据权利要求2所述的显示面板，其特征在于，所述第一发光器件包括蓝色发光器件、红色发光器件和绿色发光器件，其中，所述蓝色发光器件中的所述第一阳极的形状为圆形或近似圆形的椭圆形，所述红色发光器件和所述绿色发光器件中的所述第一阳极的形状为椭圆形。
  4. 根据权利要求1所述的显示面板，其特征在于，显示面板还包括：
    第一绝缘层，所述第一绝缘层设置在所述第一像素电路远离所述衬底基板的一侧，多条所述第一走线设置在所述第一绝缘层远离衬底基板的表面上，并通过贯穿所述第一绝缘层的所述第一过孔与所述第一像素电路电连接；
    第二绝缘层，第二绝缘层设置在所述第一绝缘层远离所述衬底基板的表面上，且覆盖所述第一走线，所述像素界定层设置在所述第二绝缘层远离衬底基板的一侧，其中，所述第一阳极通过贯穿所述第二绝缘层的所述第二过孔与所述第一走线电连接。
  5. 根据权利要求1～4中任一项所述的显示面板，其特征在于，所述第二过孔在所述衬底基板上的正投影的一部分被所述有效发光阳极区在所述衬底基板上的正投影覆盖，另一部分被所述非发光阳极区在所述衬底基板上的正投影覆盖。
  6. 根据权利要求1～4中任一项所述的显示面板，其特征在于，所述第二过孔在所述衬底基板上的正投影被所述非发光阳极区在所述衬底基板上的正投影覆盖。
  7. 根据权利要求1～4中任一项所述的显示面板，其特征在于，所述第二过孔在所述衬底基板上的正投影被所述有效发光阳极区在所述衬底基板上的正投影覆盖。
  8. 根据权利要求1～4中任一项所述的显示面板，其特征在于，形成第一走线的材料包括ITO和AZO中的至少一种。
  9. 根据权利要求1所述的显示面板，其特征在于，所述显示面板还包括：
    多个第二像素电路和多个第二发光器件，且所述第二像素电路和所述第二发光器件均位于所述第二显示区内，所述第二像素电路与所述第二发光器件中的第二阳极的连接方式为以下至少之一：
    所述第二像素电路通过第三过孔直接与所述第二发光器件中的第二阳极电连接，以驱动所述第二发光器件发光；
    所述显示面板还包括导电层，所述导电层与所述第一走线同层设置，所述第二阳极通过贯穿所述第二绝缘层的第四过孔与所述导电层电连接，所述导电层通过贯穿所述第一绝缘层的第五过孔与所述第二像素电路电连接，以驱动所述第二发光器件发光。
  10. 一种显示装置，其特征在于，包括：
    权利要求1～9中任一项所述的显示面板；
    屏下功能层，所述屏下功能层在所述显示面板上的正投影与所述显示面板的第一显示区有重叠区域。
PCT/CN2020/138660 2020-12-23 2020-12-23 显示面板和显示装置 WO2022133813A1 (zh)

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