WO2023000381A1 - 显示面板及显示装置 - Google Patents
显示面板及显示装置 Download PDFInfo
- Publication number
- WO2023000381A1 WO2023000381A1 PCT/CN2021/110350 CN2021110350W WO2023000381A1 WO 2023000381 A1 WO2023000381 A1 WO 2023000381A1 CN 2021110350 W CN2021110350 W CN 2021110350W WO 2023000381 A1 WO2023000381 A1 WO 2023000381A1
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- WIPO (PCT)
- Prior art keywords
- light
- cathode
- layer
- display panel
- suppression
- Prior art date
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- 230000001629 suppression Effects 0.000 claims abstract description 113
- 239000000758 substrate Substances 0.000 claims abstract description 50
- 239000000463 material Substances 0.000 claims abstract description 38
- 238000002834 transmittance Methods 0.000 claims abstract description 27
- 239000010410 layer Substances 0.000 claims description 253
- 230000005540 biological transmission Effects 0.000 claims description 35
- 230000003287 optical effect Effects 0.000 claims description 22
- 239000002346 layers by function Substances 0.000 claims description 15
- 239000004065 semiconductor Substances 0.000 claims description 12
- 239000011229 interlayer Substances 0.000 claims description 11
- 239000010409 thin film Substances 0.000 claims description 9
- 238000005538 encapsulation Methods 0.000 claims description 8
- 239000010408 film Substances 0.000 description 11
- 238000010586 diagram Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 5
- 239000004642 Polyimide Substances 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 229920001721 polyimide Polymers 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010406 cathode material Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005137 deposition process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/805—Electrodes
- H10K50/82—Cathodes
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/805—Electrodes
- H10K50/82—Cathodes
- H10K50/822—Cathodes 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
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
-
- 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
- H10K59/50—OLEDs integrated with light modulating elements, e.g. with electrochromic elements, photochromic elements or liquid crystal elements
Definitions
- the present application relates to the field of display technology, in particular to a display panel and a display device.
- OLED Organic Light Emitting Diode
- OLED Organic Light Emitting Diode
- display technology has attracted the attention of more and more scientific researchers, and has been widely used in display fields such as mobile phones, tablets, and TVs.
- the higher and higher requirement of proportion makes the comprehensive display device with large size and high resolution become the future development direction.
- the cathode adopts the method of setting the entire surface, and the transmittance of the cathode to light is low, so that the optical elements arranged under the screen cannot receive sufficient light signals, which affects the performance of the optical elements. normal work.
- the transmittance of the polarizer placed above the OLED device to visible light is only 40%, which further limits the collection of external optical signals by the photosensitive element under the screen.
- the current OLED display device has the technical problem of poor light transmission and cannot meet the lighting requirements of the optical elements under the screen.
- the present application provides a display panel and a display device, which are used to alleviate the technical problem of poor light transmittance existing in current OLED devices.
- the application provides a display panel, which includes a normal display area and a functional display area,
- the display panel includes:
- a substrate comprising a pixel definition layer provided with a plurality of slots
- a light-emitting layer disposed on one side of the substrate, including a plurality of light-emitting units corresponding to the slots;
- a cathode suppression layer arranged on one side of the pixel definition layer, at least in the functional display area, and between the light emitting units;
- the thickness of the cathode on the cathode suppression layer is smaller than the thickness of the cathode on the light-emitting unit
- the color filter layer is arranged on the side of the cathode away from the substrate, the color filter layer includes a plurality of color resists corresponding to the light-emitting units, and a light shielding part arranged between adjacent color resists,
- the light-shielding part includes a light-transmitting hole provided corresponding to the cathode suppression layer, and the light-transmitting hole is filled with a light-transmitting material, and the light-transmitting rate of the light-transmitting material is greater than that of the light-shielding part.
- the cathode suppression layer includes a plurality of cathode suppression parts arranged between the light emitting units,
- the area of the orthographic projection of the light transmission hole on the cathode suppression layer is greater than or equal to the area of the cathode suppression part.
- the shape of the orthographic projection of the light transmission hole on the cathode suppression layer is the same as the shape of the corresponding cathode suppression part.
- the distance between the orthographic projection of the light-transmitting hole on the light-emitting layer and the adjacent light-emitting units is 2 micrometers to 10 micrometers.
- the opening size of the light transmission hole near the cathode suppression layer is smaller than the opening size of the light transmission hole away from the cathode suppression layer.
- the opening size of the light transmission hole is gradually reduced from being far away from the cathode suppression layer to being close to the cathode suppression layer.
- the refractive index of the light-transmitting material is greater than the refractive index of the light-shielding portion.
- the angle between the side surface of the light transmission hole and the plane where the color filter layer is located is greater than or equal to 30 degrees and less than 90 degrees.
- the color resists include red resists, green resists and blue resists, and the light shielding portion includes black color resists.
- the color resists include red resists, green resists and blue resists, and the light shielding portion includes blue resists.
- the thickness of the cathode on the cathode suppression layer is zero.
- the pixel density in the functional display area is less than or equal to the pixel density in the normal display area.
- the cathode suppression layer occupies an area ratio of 5% to 95% in the functional display area.
- the light-emitting unit includes: an anode exposed through the slot, and a light-emitting functional layer disposed in the slot and in contact with the anode.
- the display panel further includes a thin film encapsulation layer disposed between the color filter layer and the cathode.
- the shape of the orthographic projection of the light transmission hole on the cathode suppression layer includes a circle, a rectangle, and a square.
- the substrate further includes: a base substrate, a semiconductor layer disposed on the base substrate, a gate insulating layer covering the semiconductor layer, and a gate insulating layer disposed on the gate insulating layer.
- the cathode includes a non-full surface covering electrode.
- the present application also provides a display panel, which includes a normal display area and a function display area,
- the display panel includes:
- a substrate comprising a pixel definition layer provided with a plurality of slots
- a light-emitting layer disposed on one side of the substrate, including a plurality of light-emitting units corresponding to the slots;
- a cathode suppression layer arranged on one side of the pixel definition layer, at least in the functional display area, and between the light emitting units;
- the thickness of the cathode on the cathode suppression layer is smaller than the thickness of the cathode on the light-emitting unit
- the color filter layer is arranged on the side of the cathode away from the substrate, the color filter layer includes a plurality of color resists corresponding to the light-emitting units, and a light shielding part arranged between adjacent color resists,
- the light-shielding part includes a light-transmitting hole corresponding to the cathode suppression layer, the light-transmitting hole is filled with a light-transmitting material, and the light-transmitting material has a light transmittance greater than that of the light-shielding part;
- the color resist includes red resist, green resist and blue resist
- the light-shielding portion includes blue resist
- the refractive index of the light-transmitting material is greater than that of the light-shielding portion.
- the present application also provides a display device, which includes the above-mentioned display panel, and an optical element arranged corresponding to a functional display area of the display panel.
- the present application provides a display panel and a display device.
- the display panel includes: a cathode suppression layer arranged on one side of the pixel definition layer and between the light-emitting units, a cathode arranged on the side of the light-emitting layer away from the substrate, and a cathode arranged on the side of the cathode
- the thickness of the cathode on the cathode suppression layer is smaller than the thickness of the cathode on the light-emitting unit.
- the light-shielding part includes a light-transmitting hole provided corresponding to the cathode suppression layer, the light-transmitting hole is filled with a light-transmitting material, and the light-transmitting rate of the light-transmitting material is greater than that of the light-shielding part.
- the present application reduces the thickness of the cathode in this area by providing a cathode suppression layer between the light emitting units, thereby increasing the light transmittance in this area; at the same time, a light-transmitting hole corresponding to the cathode suppression layer is provided on the light-shielding part to transmit light.
- the holes are filled with light-transmitting materials to further increase the light transmittance in the area between the light-emitting units, thereby increasing the amount of light collected by the optical components under the screen, which is conducive to improving the performance of the optical components under the screen.
- FIG. 1 is a schematic structural diagram of a display panel provided by an embodiment of the present application.
- FIG. 2 is a schematic diagram of the first film layer structure of the functional display area of the display panel shown in FIG. 1 .
- FIG. 3 is a schematic diagram of a second layer structure of the functional display area of the display panel shown in FIG. 1 .
- FIG. 4 is a schematic diagram of the film layer structure of the normal display area of the display panel shown in FIG. 1 .
- FIG. 5 is a schematic diagram of a third film layer structure of the functional display area of the display panel shown in FIG. 1 .
- Embodiments of the present application provide a display panel and a display device, the display panel comprising: a cathode suppression layer disposed on one side of the pixel definition layer and between the light-emitting units, a cathode disposed on the side of the light-emitting layer away from the substrate, and The color filter layer arranged on the side where the cathode is away from the substrate, the thickness of the cathode on the cathode suppression layer is smaller than the thickness of the cathode on the light emitting unit, and the color filter layer includes a plurality of corresponding to the light emitting unit
- the set color resistance, and the light-shielding part arranged between adjacent color resistances, the light-shielding part includes a light-transmitting hole corresponding to the cathode suppression layer, and the light-transmitting hole is filled with a light-transmitting material.
- the light transmittance of the light-transmitting material is greater than the light transmittance of the light-shielding portion.
- a cathode suppression layer is provided between the light-emitting units to reduce the thickness of the cathode in this region, thereby increasing the light transmittance in this region; at the same time, a light-transmitting hole corresponding to the cathode suppression layer is provided on the light-shielding part,
- the light-transmitting holes are filled with light-transmitting materials to further increase the light transmittance in the area between the light-emitting units, thereby increasing the amount of light collected by the optical components under the screen, which is conducive to improving the performance of the optical components under the screen.
- FIG. 1 is a schematic structural diagram of a display panel provided by an embodiment of the present application.
- the display panel includes a functional display area 10 and a normal display area 20 . Both the functional display area 10 and the normal display area 20 have a display function, thereby realizing a full-screen design of the display panel.
- the function display area 10 can be surrounded by the normal display area 20 , or can be located on one side of the normal display area 20 .
- the area of the display panel corresponding to the functional display area 10 may be provided with optical elements, such as an under-screen camera, an under-screen optical sensor, and the like.
- the light transmittance of the functional display area 10 is greater than the light transmittance of the normal display area 20 to meet the lighting requirements of the optical elements under the screen.
- pixel units are arranged in the functional display area 10 .
- the pixel units in the functional display area 10 and the pixel units in the normal display area 20 may be the same or different.
- the pixel density of the functional display area 10 is less than or equal to the pixel density of the normal display area 20 .
- FIG. 2 is a schematic diagram of the first layer structure of the functional display area of the display panel shown in FIG. 1 .
- the display panel includes a light-emitting area A1 and a light-transmitting area A2, and the light-emitting area A1 and the light-transmitting area A2 are alternately distributed in the functional display area 10 to ensure that the entire The functional display area 10 has uniform picture display quality and uniform light transmission ability.
- the light-emitting area A1 is an area corresponding to each light-emitting unit of the display panel
- the light-transmitting area A2 is an area corresponding to each light-emitting unit of the display panel.
- the proportion of the area occupied by the light-transmitting area A2 in the functional display area 10 is 5% to 95%.
- the adjustment of the total area of the light-transmitting area in the functional display area 10 is realized, so as to meet the lighting requirements of different under-screen optical elements.
- the display panel includes a substrate
- the substrate may include: a base substrate 101, a buffer layer 102 disposed on the base substrate 101, a semiconductor layer 103 disposed on the buffer layer 102, covering the The gate insulating layer 104 of the semiconductor layer 103, the gate 105 disposed on the gate insulating layer 104, the interlayer insulating layer 106 covering the gate 105, the interlayer insulating layer 106 disposed on the The source and drain electrodes 107, the planar layer 108 covering the source and drain electrodes 107, and the pixel definition layer 110 arranged on the planar layer 108, the pixel definition layer 110 is provided with a plurality of slots, and the slots Corresponding to the position of the light emitting area A1.
- the base substrate 101 may be a composite structure composed of a first polyimide layer, an intermediate buffer layer and a second polyimide layer.
- the source and drain electrodes 107 are connected to opposite ends of the semiconductor layer 103 through the via holes on the gate insulating layer 104 and the interlayer insulating layer 106, the semiconductor layer 103, the gate 105 and The source and drain 107 constitute a thin film transistor device.
- the display panel further includes a light-emitting layer disposed on one side of the substrate, the light-emitting layer includes a plurality of light-emitting units corresponding to the slots on the pixel definition layer 110, and the light-emitting units include: An anode 109 disposed on the flat layer 108 and exposed through the slot, and a light-emitting functional layer 111 disposed in the slot and in contact with the anode 109, the anode 109 passes through the flat layer
- the via hole on 108 is electrically connected to the source and drain 107 , and receives the light-emitting driving signal transmitted by the source and drain 107 .
- the display panel further includes a cathode suppression layer 113 disposed on one side of the pixel definition layer 110, the cathode suppression layer 113 is disposed at least in the functional display area 10 and disposed between the light emitting units between and correspond to the transparent area A2.
- the display panel further includes a cathode 112 disposed on a side of the light-emitting layer away from the substrate, and the thickness of the cathode 112 on the cathode suppression layer 113 is smaller than the thickness of the cathode 112 on the light-emitting unit.
- the cathode suppression layer 113 is correspondingly disposed in the light-transmitting area A2, and is staggered from the light-emitting area A1.
- the cathode suppression layer 113 is used to reduce the deposition thickness of the cathode 112 in the light-transmitting region A2, so as to increase the light transmittance of the light-transmitting region A2.
- the molecules of the cathode material are not easily deposited in the region where the cathode suppression layer 113 is located, thereby reducing the thickness of the cathode in the region where the cathode suppression layer 113 is located or subtracted entirely.
- FIG. 3 is a schematic diagram of a second layer structure of the functional display area of the display panel shown in FIG. 1 .
- the cathode 112 is a full-face covering electrode, the cathode 112 retains a certain thickness on the cathode suppression layer 113, and the thickness of the cathode 112 on the cathode suppression layer 113 is smaller than that of the cathode 112 on the cathode suppression layer 113.
- the thickness of the light-emitting area A1 is increased, thereby reducing the influence of the cathode 112 on the light transmittance of the light-transmitting area A2.
- the adhesive force between the cathode 112 and the light emitting unit is greater than the adhesive force between the cathode 112 and the cathode suppression layer 113 .
- the cathode 112 is a non-whole-covered electrode, and the cathode 112 only exists in the area not covered by the cathode suppression layer 113, that is, the cathode on the cathode suppression layer 113
- the thickness of 112 is 0, so as to eliminate the influence of the cathode 112 on the light transmittance of the light-transmitting area A2 and further improve the light-transmitting performance of the functional display area 10 .
- the minimum distance between the cathode suppression layer 113 and the adjacent light-emitting units is 2 microns to 10 microns.
- the display panel further includes a color filter layer disposed on the side of the cathode 112 away from the substrate, and the color filter layer includes: a plurality of color resistors corresponding to the light-emitting units, and A light-shielding part disposed between adjacent color resists.
- the color resist is set corresponding to the light-emitting area A1
- the light-shielding part is set corresponding to the light-transmitting area A2.
- a thin film encapsulation layer 114 is disposed between the color filter layer and the cathode 112 , and an upper substrate 116 is disposed on a side of the color filter layer away from the thin film encapsulation layer 114 .
- the color resistance includes red resistance C1 , green resistance C2 and blue resistance C3
- the light-shielding part is a black light-shielding member BM (ie black color resistance).
- the black light-shielding member BM is used to prevent the light emitted from two adjacent light-emitting areas A1 from interfering with each other.
- the luminescent functional layer 111 corresponding to the red resistor C1 emits red light
- the luminescent functional layer 111 corresponding to the green resistor C2 emits green light
- the functional layer 111 emits blue light.
- the black light-shielding member BM is provided with a light-transmitting hole corresponding to the cathode suppression layer 113, and the light-transmitting hole is filled with a light-transmitting material 115, and the light-transmitting material 115 is transparent.
- the light rate is greater than the light transmittance of the black light shielding member BM.
- the light transmission performance of the light transmission area of the display panel is further improved by opening a light transmission hole corresponding to the cathode suppression layer 113 on the black light shielding member BM, and filling the light transmission hole with a light transmission material 115 .
- the cathode suppression layer 113 includes a plurality of cathode suppression parts arranged between the light-emitting units, and the area of the orthographic projection of the light-transmitting hole on the cathode suppression layer 113 is greater than or equal to that of the cathode suppression layer 113 . portion area, so as to ensure that at least part of the external light passing through the light-transmitting hole is emitted to the inside of the display panel through the cathode suppression portion, thereby improving the light transmittance of the light-transmitting area A2.
- the shape of the orthographic projection of the light transmission hole on the cathode suppression layer 113 is the same as the shape of the corresponding cathode suppression part, so as to fully exert the light transmission of the light transmission hole and ensure the The light-transmitting area A2 has better light-transmitting capability.
- the shape of the orthographic projection of the light transmission hole on the cathode suppression layer 113 may be a circle, a rectangle, a square or other regular or irregular polygons.
- the distance between the orthographic projection of the light-transmitting hole on the light-emitting layer and the adjacent light-emitting unit is 2 microns to 10 microns (for example: 4 microns, 5 microns, 6 microns, 8 microns, etc. ), which can not only enhance the lighting effect of the cathode patterned area, enhance the light transmittance, but also prevent the light emitted by the light-emitting unit from being transmitted through the light-transmitting hole, resulting in poor display.
- the opening size of the light transmission hole near the cathode suppression layer 113 is smaller than the opening size of the light transmission hole away from the cathode suppression layer 113 side, that is, the size of the light transmission hole is from
- the cathode suppression layer 113 gradually shrinks toward the cathode suppression layer 113, thereby forming a trapezoidal opening.
- the angle between the side of the light transmission hole and the plane where the color filter layer is located is greater than or equal to 30 degrees and less than 90 degrees (e.g. 45 degrees, 60 degrees, 75 degrees, 80 degrees, etc.).
- the light-transmitting holes with trapezoidal openings can allow more light to enter the light-transmitting area A2 from the outside, thereby further improving the light-transmitting performance of the light-transmitting area A2.
- FIG. 4 is a schematic diagram of the film layer structure of the normal display area of the display panel shown in FIG. 1 .
- the display panel includes: a base substrate 101, a buffer layer 102 disposed on the base substrate 101, a semiconductor layer 103 disposed on the buffer layer 102, covering the The gate insulating layer 104 of the semiconductor layer 103, the gate 105 disposed on the gate insulating layer 104, the interlayer insulating layer 106 covering the gate 105, the source disposed on the interlayer insulating layer 106 Drain 107, a flat layer 108 covering the source and drain 107, an anode 109 disposed on the flat layer 108, a pixel definition layer 110 disposed on the flat layer 108 and having an opening corresponding to the anode 109 , the luminescent functional layer 111 disposed in the opening of the pixel definition layer 110, the cathode 112 disposed on the luminescent functional layer 111 and the pixel definition layer 110, and the thin film encapsulation layer 114 covering the cathode 112,
- the film layer structure of the normal display area 20 does not include a cathode suppression layer, a light-transmitting hole arranged on the black light-shielding member, and a light-transmitting hole filled in the light-transmitting hole. Material.
- each film layer of the light-emitting functional layer 111 is sequentially formed on the anode 109 through a mask evaporation process;
- the cathode suppression layer 113 is formed by a plating process; then the cathode 112 is vapor-deposited on the light-emitting functional layer 111 and the cathode suppression layer 113 by a mask evaporation process, because the cathode suppression layer 113 has the function of suppressing the cathode Therefore, the thickness of the cathode on the cathode suppression layer 113 is relatively thin or there is no cathode on the cathode suppression layer 113 .
- FIG. 5 is a schematic diagram of a third layer structure of the functional display area of the display panel shown in FIG. 1 .
- the structural features of the display panel are the same as or similar to those of the display panels shown in FIGS. 2 to 4 .
- the structural features of the display panel shown in FIG. 5 will be described below, and for those not described in detail, please refer to the description of the above-mentioned embodiments.
- the display panel includes a light-emitting area A1 and a light-transmitting area A2, and the light-emitting area A1 and the light-transmitting area A2 are alternately distributed in the functional display area 10 to ensure that the entire functional display area 10 has a uniform picture display quality and uniform light transmission.
- the light-emitting area A1 is an area corresponding to each light-emitting unit of the display panel
- the light-transmitting area A2 is an area corresponding to each light-emitting unit of the display panel.
- the area ratio of the transparent area A2 in the functional display area 10 is 5% to 95%.
- the display panel includes a substrate
- the substrate may include: a base substrate 101, a buffer layer 102 disposed on the base substrate 101, a semiconductor layer 103 disposed on the buffer layer 102, covering the The gate insulating layer 104 of the semiconductor layer 103, the gate 105 disposed on the gate insulating layer 104, the interlayer insulating layer 106 covering the gate 105, the interlayer insulating layer 106 disposed on the The source and drain electrodes 107, the planar layer 108 covering the source and drain electrodes 107, and the pixel definition layer 110 arranged on the planar layer 108, the pixel definition layer 110 is provided with a plurality of slots, and the slots Corresponding to the position of the light emitting area A1.
- the display panel further includes a light-emitting layer disposed on one side of the substrate, the light-emitting layer includes a plurality of light-emitting units corresponding to the slots on the pixel definition layer 110, and the light-emitting units include: An anode 109 disposed on the flat layer 108 and exposed through the slot, and a light-emitting functional layer 111 disposed in the slot and in contact with the anode 109, the anode 109 passes through the flat layer
- the via hole on 108 is electrically connected to the source and drain 107 , and receives the light-emitting driving signal transmitted by the source and drain 107 .
- the display panel further includes a cathode suppression layer 113 disposed on one side of the pixel definition layer 110, the cathode suppression layer 113 is disposed at least in the functional display area 10 and disposed between the light emitting units between and correspond to the transparent area A2.
- the display panel further includes a cathode 112 disposed on a side of the light-emitting layer away from the substrate, and the thickness of the cathode 112 on the cathode suppression layer 113 is smaller than the thickness of the cathode 112 on the light-emitting unit.
- the cathode suppression layer 113 is correspondingly disposed in the light-transmitting area A2, and is staggered from the light-emitting area A1.
- the cathode suppression layer 113 is used to reduce the deposition thickness of the cathode 112 in the light-transmitting region A2, so as to increase the light transmittance of the light-transmitting region A2.
- the cathode 112 is a full-surface covering electrode, and the thickness of the cathode 112 on the cathode suppression layer 113 is smaller than the thickness of the cathode 112 in the light emitting region A1.
- the cathode 112 is a non-whole-covered electrode, and the cathode 112 only exists in the area not covered by the cathode suppression layer 113 , that is, the thickness of the cathode on the cathode suppression layer 113 is zero.
- the above-mentioned design of this embodiment can improve the light transmission performance of the display panel.
- the cathode suppression layer 113 is distributed in segments, and the shape of each cathode suppression layer 113 may be one or more of circle, rectangle, square or other regular or irregular polygons.
- the display panel also includes a color filter layer arranged on the side of the cathode 112 away from the substrate, the color filter layer includes: a plurality of color resistors arranged corresponding to the light-emitting units, and arranged on the adjacent The shading part Z between the color resists.
- the color resist is set corresponding to the light-emitting area A1
- the light-shielding part Z is set corresponding to the light-transmitting area A2.
- a thin film encapsulation layer 114 is disposed between the color filter layer and the cathode 112 , and an upper substrate 116 is disposed on a side of the color filter layer away from the thin film encapsulation layer 114 .
- the color resistance includes red resistance C1, green resistance C2 and blue resistance C3, and the light shielding part Z may be at least one of red resistance, green resistance and blue resistance, preferably blue resistance with relatively dark brightness.
- the luminescent functional layer 111 corresponding to the red resistor C1 emits red light
- the luminescent functional layer 111 corresponding to the green resistor C2 emits green light
- the luminescent functional layer 111 corresponding to the blue resistor C3 111 emits blue light.
- the light-shielding part Z is provided with a light-transmitting hole, the light-transmitting hole is set corresponding to the cathode suppression layer 113, and the light-transmitting hole is filled with a light-transmitting material 115, and the light-transmitting material 115 is transparent.
- the ratio is greater than the light transmittance of the light-shielding portion Z.
- a light-transmitting hole corresponding to the cathode suppression layer 113 is opened on the light-shielding portion Z, and the light-transmitting material 115 is filled in the light-transmitting hole, so as to further improve the light-transmitting performance of the light-transmitting region of the display panel.
- the refractive index of the light-transmitting material 115 is greater than that of the light-shielding portion Z, that is, when the light-shielding portion Z is a red color barrier, the refractive index of the light-transmitting material 115 is greater than that of the red color barrier.
- the refractive index of 115 is greater than that of the blue resist.
- a light-transmitting material 115 is arranged in the light-transmitting hole, and the refractive index of the light-transmitting material 115 is greater than that of the light-shielding portion Z, so that the light directed at the interface between the light-transmitting material 115 and the light-shielding portion Z When a certain incident angle is satisfied, total reflection can occur and pass through the light-transmitting area A2 of the display panel, increasing the amount of light that passes through the light-transmitting area A2 to the inside of the display panel, and further improves the light in the light-transmitting area A2 Through ability.
- the light-transmitting material 115 is selected from transparent high-refractive materials such as zirconia.
- the cathode suppression layer 113 includes a plurality of cathode suppression parts arranged between the light-emitting units, and the area of the orthographic projection of the light-transmitting hole on the cathode suppression layer 113 is greater than or equal to that of the cathode suppression layer 113 . Ministry area.
- the shape of the orthographic projection of the light transmission hole on the cathode suppression layer 113 is the same as the shape of the corresponding cathode suppression part.
- the distance between the orthographic projection of the light-transmitting hole on the light-emitting layer and the adjacent light-emitting units is 2 micrometers to 10 micrometers.
- the opening size of the light transmission hole near the cathode suppression layer 113 is smaller than the opening size of the light transmission hole away from the cathode suppression layer 113 side, that is, the size of the light transmission hole is from
- the cathode suppression layer 113 gradually shrinks toward the cathode suppression layer 113 to form a trapezoidal opening.
- the light-transmitting holes with trapezoidal openings can allow more light to enter the light-transmitting area A2 from the outside, thereby further improving the light-transmitting performance of the light-transmitting area A2.
- the film layer structure of the normal display area 20 may be the same as or different from the film layer structure of the normal display area shown in FIG. 4 .
- the film layer structure of the normal display area 20 of this embodiment is different from the film layer structure of the normal display area shown in FIG. It can be at least one of red resist, green resist and blue resist, and is preferably blue resist with darker brightness.
- the display panel provided by the embodiment of the present application includes: a cathode suppression layer arranged on one side of the pixel definition layer and between the light-emitting units, a cathode arranged on the side of the light-emitting layer away from the substrate, and a cathode arranged on the side away from the cathode
- the color filter layer on one side of the substrate, the thickness of the cathode on the cathode suppression layer is smaller than the thickness of the cathode on the light emitting unit
- the color filter layer includes a plurality of color resists set corresponding to the light emitting unit , and a light-shielding portion disposed between adjacent color resists, the light-shielding portion includes a light-transmitting hole corresponding to the cathode suppression layer, the light-transmitting hole is filled with a light-transmitting material, and the light-transmitting material
- the light transmittance is greater than the light transmittance of the light shielding portion.
- a cathode suppression layer is provided between the light-emitting units to reduce the thickness of the cathode in this region, thereby increasing the light transmittance in this region; at the same time, a light-transmitting hole corresponding to the cathode suppression layer is provided on the light-shielding part,
- the light-transmitting holes are filled with light-transmitting materials to further increase the light transmittance in the area between the light-emitting units, thereby increasing the amount of light collected by the optical components under the screen, which is conducive to improving the performance of the optical components under the screen.
- the embodiment of the present application also provides a display device, the display device includes the display panel provided in the embodiment of the present application, and an optical element, the optical element is set corresponding to the functional display area of the display panel, and passes through the light-transmitting Area lighting.
- the optical element may be a camera, an optical sensor, and the like.
- the display device may be a mobile phone, a tablet computer, etc. with a display function and an off-screen camera function.
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Abstract
一种显示面板及显示装置；显示面板包括：设置在像素定义层(110)的一侧且位于发光单元之间的阴极抑制层(113)、设置在发光层远离基板一侧的阴极(112)、以及设置在阴极(112)远离基板一侧的彩膜层，阴极(112)在阴极抑制层(113)上的厚度小于阴极(112)在发光单元上的厚度，彩膜层的遮光部(Z)包括对应阴极抑制层(113)设置的透光孔，透光孔内的透光材料(115)的透光率大于遮光部(Z)的透光率。
Description
本申请要求于2021年07月20日提交中国专利局、申请号为202110819247.6、发明名称为“显示面板及显示装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
本申请涉及显示技术领域，尤其涉及一种显示面板及显示装置。
OLED（Organic Light
Emitting Diode，有机发光二极管）显示技术受到了越来越多科研工作者的关注，并被广泛应用于手机、平板和电视等显示领域，而随着显示设备的快速发展，用户对显示设备的屏占比的要求越来越高，使得大尺寸和高分辨率的全面显示设备成为未来的发展方向。
在现有技术当中，为了尽可能的提升屏占比，通常采用将前置摄像头和面部识别等光学元件设置在屏下。但是，现有的OLED全面显示设备中，阴极采用整面设置的方式，而阴极对于光线的透过率低，从而导致设置在屏下的光学元件无法接收到充足的光信号，影响光学元件的正常工作。此外，置于OLED器件上方的偏光片对可见光的透过率只有40%，进一步限制了屏下感光元件对外部光学信号的采集。
目前的OLED显示器件存在透光性差，无法满足屏下光学元件采光需求的技术问题。
本申请提供一种显示面板及显示装置，用于缓解目前OLED器件存在的透光性差的技术问题。
本申请提供一种显示面板，其包括正常显示区和功能显示区，
所述显示面板包括：
基板，包括设置有多个开槽的像素定义层；
发光层，设置在所述基板的一侧，包括多个与所述开槽对应设置的发光单元；
阴极抑制层，设置在所述像素定义层的一侧，且至少设置在所述功能显示区中，并设置在所述发光单元之间；
阴极，设置在所述发光层远离所述基板的一侧，所述阴极在所述阴极抑制层上的厚度小于所述阴极在所述发光单元上的厚度；
彩膜层，设置于所述阴极远离所述基板的一侧，所述彩膜层包括多个对应所述发光单元设置的色阻、以及设置于相邻所述色阻之间的遮光部，所述遮光部包括对应所述阴极抑制层设置的透光孔，所述透光孔内填充透光材料，所述透光材料的透光率大于所述遮光部的透光率。
在本申请的显示面板中，所述阴极抑制层包括多个设置在所述发光单元之间的阴极抑制部，
所述透光孔在所述阴极抑制层上的正投影的面积大于或等于所述阴极抑制部面积。
在本申请的显示面板中，所述透光孔在所述阴极抑制层上的正投影的形状，与其对应的阴极抑制部的形状相同。
在本申请的显示面板中，所述透光孔在所述发光层上的正投影与相邻的所述发光单元之间的距离为2微米至10微米。
在本申请的显示面板中，所述透光孔靠近所述阴极抑制层一侧的开口尺寸小于所述透光孔远离所述阴极抑制层一侧的开口尺寸。
在本申请的显示面板中，所述透光孔的开口尺寸由远离所述阴极抑制层至靠近所述阴极抑制层逐渐缩小。
在本申请的显示面板中，所述透光材料的折射率大于所述遮光部的折射率。
在本申请的显示面板中，所述透光孔侧面与所述彩膜层所处平面之间的夹角大于或等于30度且小于90度。
在本申请的显示面板中，所述色阻包括红色阻、绿色阻和蓝色阻，所述遮光部包括黑色色阻。
在本申请的显示面板中，所述色阻包括红色阻、绿色阻和蓝色阻，所述遮光部包括蓝色阻。
在本申请的显示面板中，所述阴极在所述阴极抑制层上的厚度为0。
在本申请的显示面板中，所述功能显示区内的像素密度小于或等于所述正常显示区内的像素密度。
在本申请的显示面板中，所述阴极抑制层在所述功能显示区内的所占的面积比例为5%至95%。
在本申请的显示面板中，所述发光单元包括：通过所述开槽暴露的阳极、以及设置于所述开槽中并与所述阳极相接触的发光功能层。
在本申请的显示面板中，所述显示面板还包括设置在所述彩膜层与所述阴极之间的薄膜封装层。
在本申请的显示面板中，所述透光孔在所述阴极抑制层上的正投影的形状包括圆形、长方形、正方形。
在本申请的显示面板中，所述基板还包括：衬底基板、设置于所述衬底基板上的半导体层、覆盖所述半导体层的栅极绝缘层、设置于所述栅极绝缘层上的栅极、覆盖所述栅极的层间绝缘层、设置于所述层间绝缘层上的源漏极、覆盖所述源漏极的平坦层，所述像素定义层设置于所述平坦层上。
在本申请的显示面板中，所述阴极包括非整面覆盖型电极。
本申请还提供一种显示面板，其包括正常显示区和功能显示区，
所述显示面板包括：
基板，包括设置有多个开槽的像素定义层；
发光层，设置在所述基板的一侧，包括多个与所述开槽对应设置的发光单元；
阴极抑制层，设置在所述像素定义层的一侧，且至少设置在所述功能显示区中，并设置在所述发光单元之间；
阴极，设置在所述发光层远离所述基板的一侧，所述阴极在所述阴极抑制层上的厚度小于所述阴极在所述发光单元上的厚度；
彩膜层，设置于所述阴极远离所述基板的一侧，所述彩膜层包括多个对应所述发光单元设置的色阻、以及设置于相邻所述色阻之间的遮光部，所述遮光部包括对应所述阴极抑制层设置的透光孔，所述透光孔内填充透光材料，所述透光材料的透光率大于所述遮光部的透光率；
所述色阻包括红色阻、绿色阻和蓝色阻，所述遮光部包括蓝色阻，所述透光材料的折射率大于所述遮光部的折射率。
本申请还提供一种显示装置，其包括如上所述的显示面板、以及对应所述显示面板的功能显示区设置的光学元件。
本申请提供一种显示面板及显示装置，该显示面板包括：设置在像素定义层的一侧且位于发光单元之间的阴极抑制层、设置在发光层远离基板一侧的阴极、以及设置在阴极远离基板一侧的彩膜层，阴极在阴极抑制层上的厚度小于阴极在发光单元上的厚度，彩膜层包括多个对应发光单元设置的色阻、以及设置于相邻色阻之间的遮光部，遮光部包括对应阴极抑制层设置的透光孔，透光孔内填充透光材料，透光材料的透光率大于遮光部的透光率。本申请通过在发光单元之间设置阴极抑制层以减小该区域的阴极厚度，增大了该区域的光线透过率；同时，在遮光部上设置对应阴极抑制层的透光孔，透光孔内填充透光材料，进一步提升发光单元之间区域的光线透过率，进而增大屏下光学元件的采光量，有利于提升屏下光学元件的工作性能。
为了更清楚地说明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单介绍，显而易见地，下面描述中的附图仅仅是申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本申请实施例提供的显示面板的结构示意图。
图2是图1所示的显示面板的功能显示区的第一种膜层结构示意图。
图3是图1所示的显示面板的功能显示区的第二种膜层结构示意图。
图4是图1所示的显示面板的正常显示区的膜层结构示意图。
图5是图1所示的显示面板的功能显示区的第三种膜层结构示意图。
以下各实施例的说明是参考附加的图示，用以例示本申请可用以实施的特定实施例。本申请所提到的方向用语，例如[上]、[下]、[前]、[后]、[左]、[右]、[内]、[外]、[侧面]等，仅是参考附加图式的方向。因此，使用的方向用语是用以说明及理解本申请，而非用以限制本申请。在图中，结构相似的单元是用以相同标号表示。
本申请实施例提供一种显示面板及显示装置，所述显示面板包括：设置在像素定义层的一侧且位于发光单元之间的阴极抑制层、设置在发光层远离基板一侧的阴极、以及设置在阴极远离基板一侧的彩膜层，所述阴极在所述阴极抑制层上的厚度小于所述阴极在所述发光单元上的厚度，所述彩膜层包括多个对应所述发光单元设置的色阻、以及设置于相邻所述色阻之间的遮光部，所述遮光部包括对应所述阴极抑制层设置的透光孔，所述透光孔内填充透光材料，所述透光材料的透光率大于所述遮光部的透光率。本申请实施例通过在发光单元之间设置阴极抑制层以减小该区域的阴极厚度，增大了该区域的光线透过率；同时，在遮光部上设置对应阴极抑制层的透光孔，透光孔内填充透光材料，进一步提升发光单元之间区域的光线透过率，进而增大屏下光学元件的采光量，有利于提升屏下光学元件的工作性能。
请参阅图1，图1是本申请实施例提供的显示面板的结构示意图。所述显示面板包括功能显示区10和正常显示区20。所述功能显示区10和所述正常显示区20均具有显示功能，从而实现显示面板的全面屏设计。
所述功能显示区10可以被所述正常显示区20包围，也可以位于所述正常显示区20的一侧。对应所述功能显示区10的显示面板区域可以设置光学元件，比如屏下摄像头、屏下光学传感器等。所述功能显示区10的透光率大于所述正常显示区20的透光率，以满足屏下光学元件的采光需求。
为了实现所述功能显示区10的显示功能，在所述功能显示区10内设置有像素单元。所述功能显示区10内的像素单元与所述正常显示区20内的像素单元可以相同，也可以不同。所述功能显示区10的像素密度小于或等于所述正常显示区20的像素密度。
请参阅图2，图2是图1所示的显示面板的功能显示区的第一种膜层结构示意图。
在所述功能显示区10内，所述显示面板包括发光区A1和透光区A2，所述发光区A1和所述透光区A2在所述功能显示区10内为交替分布，以保证整个功能显示区10具有均匀的画面显示品质和均一的透光能力。其中，所述发光区A1是对应于所述显示面板的各个发光单元的区域，所述透光区A2是对应于所述显示面板的各个发光单元之间的区域。
可选地，所述透光区A2在所述功能显示区10内的所占的面积比例为5%至95%。通过调整每个透光区A2的大小，实现对功能显示区10内总的透光区面积的调节，以适应不同屏下光学元件的采光需求。
具体地，所述显示面板包括基板，所述基板可以包括：衬底基板101、设置于所述衬底基板101上的缓冲层102、设置于所述缓冲层102上的半导体层103、覆盖所述半导体层103的栅极绝缘层104、设置于所述栅极绝缘层104上的栅极105、覆盖所述栅极105的层间绝缘层106、设置于所述层间绝缘层106上的源漏极107、覆盖所述源漏极107的平坦层108、以及设置于所述平坦层108上的像素定义层110，所述像素定义层110上设置有多个开槽，所述开槽与所述发光区A1的位置相对应。
所述衬底基板101可以是由第一聚酰亚胺层、中间缓冲层和第二聚酰亚胺层组成的复合结构。所述源漏极107通过所述栅极绝缘层104和所述层间绝缘层106上的过孔连接至所述半导体层103的相对两端，所述半导体层103、所述栅极105和所述源漏极107构成薄膜晶体管器件。
进一步地，所述显示面板还包括设置在所述基板一侧的发光层，所述发光层包括多个与所述像素定义层110上的开槽对应设置的发光单元，所述发光单元包括：设置于所述平坦层108上且通过所述开槽暴露的阳极109、以及设置于所述开槽中并与所述阳极109相接触的发光功能层111，所述阳极109通过所述平坦层108上的过孔电性连接至所述源漏极107，并接收由所述源漏极107传输的发光驱动信号。
进一步地，所述显示面板还包括设置在所述像素定义层110一侧的阴极抑制层113，所述阴极抑制层113至少设置在所述功能显示区10中，并设置在所述发光单元之间且与所述透光区A2相对应。
所述显示面板还包括设置在所述发光层远离所述基板一侧的阴极112，所述阴极112在所述阴极抑制层113上的厚度小于所述阴极112在所述发光单元上的厚度。
所述阴极抑制层113对应设置于所述透光区A2，且与所述发光区A1错开。所述阴极抑制层113用于减小所述阴极112在所述透光区A2的沉积厚度，以提升透光区A2的透光率。通过沉积工艺制作整面型的阴极112时，由于所述阴极抑制层113的存在，阴极材料的分子不易在阴极抑制层113所在的区域沉积，从而使阴极抑制层113所在区域的阴极厚度减小或完全减除。
可选地，请参阅图3，图3是图1所示的显示面板的功能显示区的第二种膜层结构示意图。所述阴极112为整面覆盖型电极，所述阴极112在所述阴极抑制层113上保留一定的厚度，且所述阴极112在所述阴极抑制层113上的厚度小于所述阴极112在所述发光区A1的厚度，从而减弱所述阴极112对所述透光区A2的光线透过率的影响。所述阴极112与所述发光单元之间的粘接力大于所述阴极112与所述阴极抑制层113之间的粘接力。
可选地，请参阅图2，所述阴极112为非整面覆盖型电极，所述阴极112仅存在于所述阴极抑制层113未覆盖的区域，即，所述阴极抑制层113上的阴极112的厚度为0，从而消除所述阴极112对所述透光区A2的光线透过率的影响，进一步提升所述功能显示区10的透光性能。
可选地，所述阴极抑制层113与相邻的所述发光单元之间的最小距离为2微米至10微米。
请继续参阅图2，所述显示面板还包括设置于所述阴极112远离所述基板的一侧的彩膜层，所述彩膜层包括：多个对应所述发光单元设置的色阻、以及设置于相邻所述色阻之间的遮光部。其中，所述色阻对应所述发光区A1设置，所述遮光部对应所述透光区A2设置。
可选地，所述彩膜层与所述阴极112之间设置有薄膜封装层114，所述彩膜层远离所述薄膜封装层114的一侧设置有上基板116。
所述色阻包括红色阻C1、绿色阻C2和蓝色阻C3，所述遮光部为黑色遮光构件BM（即黑色色阻）。所述黑色遮光构件BM用于防止相邻两个所述发光区A1发出的光线相互串扰。其中，与所述红色阻C1对应的所述发光功能层111发射红光，与所述绿色阻C2对应的所述发光功能层111发射绿光，与所述蓝色阻C3对应的所述发光功能层111发射蓝光。
进一步地，所述黑色遮光构件BM上设置有透光孔，所述透光孔对应所述阴极抑制层113设置，所述透光孔内填充透光材料115，所述透光材料115的透光率大于所述黑色遮光构件BM的透光率。本实施例通过在黑色遮光构件BM上开设对应阴极抑制层113的透光孔，并在透光孔内填充透光材料115，进一步提升了所述显示面板的透光区的透光性能。
进一步地，所述阴极抑制层113包括多个设置在所述发光单元之间的阴极抑制部，所述透光孔在所述阴极抑制层113上的正投影的面积大于或等于所述阴极抑制部面积，从而保证至少部分穿过所述透光孔的外界光线通过所述阴极抑制部射向所述显示面板内部，提升所述透光区A2的透光性。
进一步地，所述透光孔在所述阴极抑制层113上的正投影的形状，与其对应的所述阴极抑制部的形状相同，从而充分发挥所述透光孔的透光性，保证所述透光区A2具有较好的透光能力。可选地，所述透光孔在所述阴极抑制层113上的正投影的形状可以是圆形、长方形、正方形或其它规则或不规则的多边形。
进一步地，所述透光孔在所述发光层上的正投影与相邻的所述发光单元之间的距离为2微米至10微米（例如：4微米、5微米、6微米、8微米等），这样既可以增强阴极图案化区域的采光效果，增强透光性，又可以避免发光单元发出的光线从透光孔透射出来，造成显示上的不良。
进一步地，所述透光孔靠近所述阴极抑制层113一侧的开口尺寸小于所述透光孔远离所述阴极抑制层113一侧的开口尺寸，即，所述透光孔的尺寸由远离所述阴极抑制层113至靠近所述阴极抑制层113逐渐缩小，从而形成梯形开口，具体地，透光孔侧面与所述彩膜层所处平面之间的夹角大于或等于30度且小于90度（例如45度、60度、75度、80度等）。具有梯形开口的透光孔可以允许更多的光线由外界射入所述透光区A2，从而进一步提升透光区A2的透光性能。
请参阅图4，图4是图1所示的显示面板的正常显示区的膜层结构示意图。
在所述正常显示区20内，所述显示面板包括：衬底基板101、设置于所述衬底基板101上的缓冲层102、设置于所述缓冲层102上的半导体层103、覆盖所述半导体层103的栅极绝缘层104、设置于所述栅极绝缘层104上的栅极105、覆盖所述栅极105的层间绝缘层106、设置于所述层间绝缘层106上的源漏极107、覆盖所述源漏极107的平坦层108、设置于所述平坦层108上的阳极109、设置于所述平坦层108上且具有对应所述阳极109的开口的像素定义层110、设置于所述像素定义层110的开口中的发光功能层111、设置于所述发光功能层111和所述像素定义层110上的阴极112、以及覆盖所述阴极112的薄膜封装层114、设置于所述薄膜封装层114上的色阻和黑色遮光构件BM、以及设置于所述色阻和所述黑色遮光构件BM上的上基板116。所述色阻包括红色阻C1、绿色阻C2和蓝色阻C3。
与所述功能显示区10的膜层结构相比，所述正常显示区20的膜层结构不包括阴极抑制层、设置于黑色遮光构件上的透光孔和填充于透光孔内的透光材料。
进一步地，在制作所述显示面板时，在所述阳极109上通过掩膜板蒸镀工艺依次形成发光功能层111的各个膜层；然后在所述像素定义层110上通过精细掩膜板蒸镀工艺形成所述阴极抑制层113；然后通过掩膜板蒸镀工艺在所述发光功能层111和所述阴极抑制层113上蒸镀所述阴极112，由于所述阴极抑制层113具有抑制阴极材料沉积的作用，因此，位于阴极抑制层113上的阴极厚度较薄或阴极抑制层113上不存在阴极。
在一种实施例中，请参阅图5，图5是图1所示的显示面板的功能显示区的第三种膜层结构示意图。在本实施例中，显示面板的结构特征与图2至图4所示的显示面板的结构特征相同或相似。下面对图5所示的显示面板的结构特征进行说明，其中未详述之处请参阅上述实施例的描述。
所述显示面板包括发光区A1和透光区A2，所述发光区A1和所述透光区A2在所述功能显示区10内为交替分布，以保证整个功能显示区10具有均匀的画面显示品质和均一的透光能力。其中，所述发光区A1是对应于所述显示面板的各个发光单元的区域，所述透光区A2是对应于所述显示面板的各个发光单元之间的区域。
所述透光区A2在所述功能显示区10内的所占的面积比例为5%至95%。通过调整每个透光区A2的大小，实现对功能显示区10内总的透光区面积的调节，以适应不同屏下光学元件的采光需求。
具体地，所述显示面板包括基板，所述基板可以包括：衬底基板101、设置于所述衬底基板101上的缓冲层102、设置于所述缓冲层102上的半导体层103、覆盖所述半导体层103的栅极绝缘层104、设置于所述栅极绝缘层104上的栅极105、覆盖所述栅极105的层间绝缘层106、设置于所述层间绝缘层106上的源漏极107、覆盖所述源漏极107的平坦层108、以及设置于所述平坦层108上的像素定义层110，所述像素定义层110上设置有多个开槽，所述开槽与所述发光区A1的位置相对应。
进一步地，所述显示面板还包括设置在所述基板一侧的发光层，所述发光层包括多个与所述像素定义层110上的开槽对应设置的发光单元，所述发光单元包括：设置于所述平坦层108上且通过所述开槽暴露的阳极109、以及设置于所述开槽中并与所述阳极109相接触的发光功能层111，所述阳极109通过所述平坦层108上的过孔电性连接至所述源漏极107，并接收由所述源漏极107传输的发光驱动信号。
进一步地，所述显示面板还包括设置在所述像素定义层110一侧的阴极抑制层113，所述阴极抑制层113至少设置在所述功能显示区10中，并设置在所述发光单元之间且与所述透光区A2相对应。所述显示面板还包括设置在所述发光层远离所述基板一侧的阴极112，所述阴极112在所述阴极抑制层113上的厚度小于所述阴极112在所述发光单元上的厚度。
所述阴极抑制层113对应设置于所述透光区A2，且与所述发光区A1错开。所述阴极抑制层113用于减小所述阴极112在所述透光区A2的沉积厚度，以提升透光区A2的透光率。
可选地，所述阴极112为整面覆盖型电极，所述阴极112在所述阴极抑制层113上的厚度小于所述阴极112在所述发光区A1的厚度。或者，所述阴极112为非整面覆盖型电极，所述阴极112仅存在于所述阴极抑制层113未覆盖的区域，即，所述阴极抑制层113上的阴极厚度为0。本实施例的上述设计可以提升所述显示面板的透光性能。
可选地，所述阴极抑制层113为片段状分布，每个所述阴极抑制层113的形状可以是圆形、长方形、正方形或其它规则或不规则的多边形中的一种或多种。
所述显示面板还包括设置于所述阴极112远离所述基板的一侧的彩膜层，所述彩膜层包括：多个对应所述发光单元设置的色阻、以及设置于相邻所述色阻之间的遮光部Z。其中，所述色阻对应所述发光区A1设置，所述遮光部Z对应所述透光区A2设置。所述彩膜层与所述阴极112之间设置有薄膜封装层114，所述彩膜层远离所述薄膜封装层114的一侧设置有上基板116。
所述色阻包括红色阻C1、绿色阻C2和蓝色阻C3，所述遮光部Z可以是红色阻、绿色阻和蓝色阻中的至少一种，优选为亮度较暗的蓝色阻。与所述红色阻C1对应的所述发光功能层111发射红光，与所述绿色阻C2对应的所述发光功能层111发射绿光，与所述蓝色阻C3对应的所述发光功能层111发射蓝光。
进一步地，所述遮光部Z上设置有透光孔，所述透光孔对应所述阴极抑制层113设置，所述透光孔内填充透光材料115，所述透光材料115的透光率大于所述遮光部Z的透光率。本实施例通过在遮光部Z上开设对应阴极抑制层113的透光孔，并在透光孔内填充透光材料115，进一步提升了所述显示面板的透光区的透光性能。
可选地，所述透光材料115的折射率大于所述遮光部Z的折射率，即，当所述遮光部Z为红色阻时，所述透光材料115的折射率大于所述红色阻的折射率；当所述遮光部Z为绿色阻时，所述透光材料115的折射率大于所述绿色阻的折射率；当所述遮光部Z为蓝色阻时，所述透光材料115的折射率大于所述蓝色阻的折射率。
本实施例通过在透光孔内设置透光材料115，并使透光材料115的折射率大于遮光部Z的折射率，使得射向透光材料115与遮光部Z的交界面上的光线在满足一定入射角度的情况下可以发生全反射，并穿过显示面板的透光区A2，提升了通过透光区A2射向所述显示面板内部的光线量，进一步提升了透光区A2的光线透过能力。
可选地，所述透光材料115选自氧化锆等透明高折射材料。
进一步地，所述阴极抑制层113包括多个设置在所述发光单元之间的阴极抑制部，所述透光孔在所述阴极抑制层113上的正投影的面积大于或等于所述阴极抑制部面积。可选地，所述透光孔在所述阴极抑制层113上的正投影的形状，与其对应的所述阴极抑制部的形状相同。所述透光孔在所述发光层上的正投影与相邻的所述发光单元之间的距离为2微米至10微米。
进一步地，所述透光孔靠近所述阴极抑制层113一侧的开口尺寸小于所述透光孔远离所述阴极抑制层113一侧的开口尺寸，即，所述透光孔的尺寸由远离所述阴极抑制层113至靠近所述阴极抑制层113逐渐缩小，从而形成梯形开口。具有梯形开口的透光孔可以允许更多的光线由外界射入所述透光区A2，从而进一步提升透光区A2的透光性能。
在本实施例中，所述正常显示区20的膜层结构与图4所示的正常显示区的膜层结构可以相同，也可以不同。当本实施例的正常显示区20的膜层结构与图4所示的正常显示区的膜层结构不同时，其不同之处在于，本实施例中，位于相邻色阻之间的遮光部可以是红色阻、绿色阻和蓝色阻中的至少一种，且优选为亮度较暗的蓝色阻。
综上所述，本申请实施例提供的显示面板包括：设置在像素定义层的一侧且位于发光单元之间的阴极抑制层、设置在发光层远离基板一侧的阴极、以及设置在阴极远离基板一侧的彩膜层，所述阴极在所述阴极抑制层上的厚度小于所述阴极在所述发光单元上的厚度，所述彩膜层包括多个对应所述发光单元设置的色阻、以及设置于相邻所述色阻之间的遮光部，所述遮光部包括对应所述阴极抑制层设置的透光孔，所述透光孔内填充透光材料，所述透光材料的透光率大于所述遮光部的透光率。本申请实施例通过在发光单元之间设置阴极抑制层以减小该区域的阴极厚度，增大了该区域的光线透过率；同时，在遮光部上设置对应阴极抑制层的透光孔，透光孔内填充透光材料，进一步提升发光单元之间区域的光线透过率，进而增大屏下光学元件的采光量，有利于提升屏下光学元件的工作性能。
本申请实施例还提供一种显示装置，所述显示装置包括本申请实施例提供的显示面板、以及光学元件，所述光学元件对应所述显示面板的功能显示区设置，并通过所述透光区采光。所述光学元件可以是摄像头、光学传感器等。所述显示装置可以是具有显示功能和屏下摄像功能的手机、平板电脑等。
需要说明的是，虽然本申请以具体实施例揭露如上，但上述实施例并非用以限制本申请，本领域的普通技术人员，在不脱离本申请的精神和范围内，均可作各种更动与润饰，因此本申请的保护范围以权利要求界定的范围为准。
Claims (20)
- 一种显示面板，其包括正常显示区和功能显示区，所述显示面板包括：基板，包括设置有多个开槽的像素定义层；发光层，设置在所述基板的一侧，包括多个与所述开槽对应设置的发光单元；阴极抑制层，设置在所述像素定义层的一侧，且至少设置在所述功能显示区中，并设置在所述发光单元之间；阴极，设置在所述发光层远离所述基板的一侧，所述阴极在所述阴极抑制层上的厚度小于所述阴极在所述发光单元上的厚度；彩膜层，设置于所述阴极远离所述基板的一侧，所述彩膜层包括多个对应所述发光单元设置的色阻、以及设置于相邻所述色阻之间的遮光部，所述遮光部包括对应所述阴极抑制层设置的透光孔，所述透光孔内填充透光材料，所述透光材料的透光率大于所述遮光部的透光率。
- 根据权利要求1所述的显示面板，其中，所述阴极抑制层包括多个设置在所述发光单元之间的阴极抑制部，所述透光孔在所述阴极抑制层上的正投影的面积大于或等于所述阴极抑制部面积。
- 根据权利要求2所述的显示面板，其中，所述透光孔在所述阴极抑制层上的正投影的形状，与其对应的阴极抑制部的形状相同。
- 根据权利要求2所述的显示面板，其中，所述透光孔在所述发光层上的正投影与相邻的所述发光单元之间的距离为2微米至10微米。
- 根据权利要求1所述的显示面板，其中，所述透光孔靠近所述阴极抑制层一侧的开口尺寸小于所述透光孔远离所述阴极抑制层一侧的开口尺寸。
- 根据权利要求5所述的显示面板，其中，所述透光孔的开口尺寸由远离所述阴极抑制层至靠近所述阴极抑制层逐渐缩小。
- 根据权利要求5所述的显示面板，其中，所述透光材料的折射率大于所述遮光部的折射率。
- 根据权利要求7所述的显示面板，其中，所述透光孔侧面与所述彩膜层所处平面之间的夹角大于或等于30度且小于90度。
- 根据权利要求7所述的显示面板，其中，所述色阻包括红色阻、绿色阻和蓝色阻，所述遮光部包括黑色色阻。
- 根据权利要求7所述的显示面板，其中，所述色阻包括红色阻、绿色阻和蓝色阻，所述遮光部包括蓝色阻。
- 根据权利要求1所述的显示面板，其中，所述阴极在所述阴极抑制层上的厚度为0。
- 根据权利要求1所述的显示面板，其中，所述功能显示区内的像素密度小于或等于所述正常显示区内的像素密度。
- 根据权利要求1所述的显示面板，其中，所述阴极抑制层在所述功能显示区内的所占的面积比例为5%至95%。
- 根据权利要求1所述的显示面板，其中，所述发光单元包括：通过所述开槽暴露的阳极、以及设置于所述开槽中并与所述阳极相接触的发光功能层。
- 根据权利要求1所述的显示面板，其中，所述显示面板还包括设置在所述彩膜层与所述阴极之间的薄膜封装层。
- 根据权利要求1所述的显示面板，其中，所述透光孔在所述阴极抑制层上的正投影的形状包括圆形、长方形、正方形。
- 根据权利要求1所述的显示面板，其中，所述基板还包括：衬底基板、设置于所述衬底基板上的半导体层、覆盖所述半导体层的栅极绝缘层、设置于所述栅极绝缘层上的栅极、覆盖所述栅极的层间绝缘层、设置于所述层间绝缘层上的源漏极、覆盖所述源漏极的平坦层，所述像素定义层设置于所述平坦层上。
- 根据权利要求1所述的显示面板，其中，所述阴极包括非整面覆盖型电极。
- 一种显示面板，其包括正常显示区和功能显示区，所述显示面板包括：基板，包括设置有多个开槽的像素定义层；发光层，设置在所述基板的一侧，包括多个与所述开槽对应设置的发光单元；阴极抑制层，设置在所述像素定义层的一侧，且至少设置在所述功能显示区中，并设置在所述发光单元之间；阴极，设置在所述发光层远离所述基板的一侧，所述阴极在所述阴极抑制层上的厚度小于所述阴极在所述发光单元上的厚度；彩膜层，设置于所述阴极远离所述基板的一侧，所述彩膜层包括多个对应所述发光单元设置的色阻、以及设置于相邻所述色阻之间的遮光部，所述遮光部包括对应所述阴极抑制层设置的透光孔，所述透光孔内填充透光材料，所述透光材料的透光率大于所述遮光部的透光率；所述色阻包括红色阻、绿色阻和蓝色阻，所述遮光部包括蓝色阻，所述透光材料的折射率大于所述遮光部的折射率。
- 一种显示装置，其包括权利要求1所述的显示面板、以及对应所述显示面板的功能显示区设置的光学元件。
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| CN116437724A (zh) * | 2023-03-31 | 2023-07-14 | 惠科股份有限公司 | 显示面板及显示装置 |
| CN116437724B (zh) * | 2023-03-31 | 2024-05-31 | 惠科股份有限公司 | 显示面板及显示装置 |
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| CN113745433B (zh) * | 2021-09-08 | 2023-06-02 | 武汉华星光电半导体显示技术有限公司 | 一种显示面板 |
| CN114267686B (zh) * | 2021-12-14 | 2023-08-22 | 武汉华星光电半导体显示技术有限公司 | 显示面板及显示装置 |
| CN114284328A (zh) * | 2021-12-23 | 2022-04-05 | 武汉华星光电半导体显示技术有限公司 | 显示面板及显示装置 |
| CN114333600B (zh) * | 2022-01-11 | 2023-11-24 | 合肥维信诺科技有限公司 | 显示面板、显示面板的制备方法和显示模组 |
| CN114512520B (zh) * | 2022-02-07 | 2024-01-23 | 武汉华星光电半导体显示技术有限公司 | 显示面板和显示装置 |
| CN114582940A (zh) * | 2022-02-23 | 2022-06-03 | 深圳市华星光电半导体显示技术有限公司 | 显示面板及屏下摄像显示装置 |
| CN114695790B (zh) * | 2022-03-18 | 2023-10-10 | 武汉华星光电半导体显示技术有限公司 | Oled显示面板和oled显示装置 |
| CN115020618B (zh) * | 2022-06-23 | 2024-03-05 | 武汉华星光电半导体显示技术有限公司 | 一种透明显示面板 |
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