WO2023178758A1 - 显示面板 - Google Patents

显示面板 Download PDF

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Publication number
WO2023178758A1
WO2023178758A1 PCT/CN2022/086817 CN2022086817W WO2023178758A1 WO 2023178758 A1 WO2023178758 A1 WO 2023178758A1 CN 2022086817 W CN2022086817 W CN 2022086817W WO 2023178758 A1 WO2023178758 A1 WO 2023178758A1
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WO
WIPO (PCT)
Prior art keywords
light
layer
emitting
adjustment
unit group
Prior art date
Application number
PCT/CN2022/086817
Other languages
English (en)
French (fr)
Inventor
欧建兵
Original Assignee
广州华星光电半导体显示技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 广州华星光电半导体显示技术有限公司 filed Critical 广州华星光电半导体显示技术有限公司
Priority to US17/756,044 priority Critical patent/US20240164190A1/en
Publication of WO2023178758A1 publication Critical patent/WO2023178758A1/zh

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Classifications

    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00Organic light-emitting devices
    • H10K50/80Constructional details
    • H10K50/86Arrangements for improving contrast, e.g. preventing reflection of ambient light
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10OLED displays
    • H10K59/12Active-matrix OLED [AMOLED] displays
    • H10K59/122Pixel-defining structures or layers, e.g. banks
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00Organic light-emitting devices
    • H10K50/80Constructional details
    • H10K50/85Arrangements for extracting light from the devices
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10OLED displays
    • H10K59/12Active-matrix OLED [AMOLED] displays
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10OLED displays
    • H10K59/12Active-matrix OLED [AMOLED] displays
    • H10K59/124Insulating layers formed between TFT elements and OLED elements
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80Constructional details
    • H10K59/87Passivation; Containers; Encapsulations
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80Constructional details
    • H10K59/875Arrangements for extracting light from the devices
    • H10K59/879Arrangements for extracting light from the devices comprising refractive means, e.g. lenses
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K2102/00Constructional details relating to the organic devices covered by this subclass
    • H10K2102/301Details of OLEDs
    • H10K2102/351Thickness

Definitions

  • the present application relates to the field of display, and in particular, to a display panel.
  • a top-emitting device structure is usually used.
  • This structure is an overlapping total reflective anode, an organic light-emitting layer, and a semi-reflective cathode. This structure allows the light-emitting device structure to form a microcavity.
  • the observation angles of the human eye are different for the light emitted by the light-emitting device at different positions.
  • Embodiments of the present application provide a display panel to solve the technical problem of chromaticity differences caused by viewing the display panel at different angles.
  • An embodiment of the present application provides a display panel, including:
  • the light-emitting layer includes a plurality of light-emitting unit groups arranged along a first direction.
  • the light-emitting unit group includes at least one light-emitting unit.
  • the plurality of light-emitting unit groups include a visual center unit group. The remaining plurality of light-emitting unit groups are respectively Located on both sides of the visual center unit group;
  • An adjustment layer is provided on one side of the backlight surface of the light-emitting layer, the adjustment layer includes a plurality of adjustment unit groups, and the adjustment unit group is arranged corresponding to the light-emitting unit group;
  • the plurality of adjustment unit groups have multiple thicknesses, so that the heights of the light-emitting unit groups located on both sides of the visual center unit group are smaller than the height of the visual center unit. The height of the group.
  • the thickness of one of the adjustment unit groups close to the visual center unit group is greater than the thickness of the other adjustment unit group far away from the visual center unit group.
  • the display panel includes an array substrate
  • the adjustment layer includes the array substrate
  • the display panel includes an array substrate
  • the adjustment layer includes the array substrate
  • the array substrate layer includes a substrate layer, a control device layer disposed on the substrate layer, and a passivation layer disposed on a side of the control device layer facing away from the substrate layer;
  • the substrate layer and the control device layer corresponding to different adjustment unit groups have the same thickness, and the passivation layer corresponding to different adjustment unit groups has different thicknesses. .
  • the passivation layer is made of silicon nitride.
  • the light-emitting layer includes: an anode layer, a pixel definition layer disposed on the anode layer, and a cathode layer disposed on the pixel definition layer.
  • a plurality of pixel openings are provided on the pixel definition layer, one light-emitting unit corresponds to one of the pixel openings, and the pixel openings are filled with organic light-emitting materials.
  • the anode layer of the light-emitting layer is disposed on the adjustment layer.
  • This application also provides a display panel, including:
  • the light-emitting layer includes a plurality of light-emitting unit groups arranged along a first direction.
  • the light-emitting unit group includes at least one light-emitting unit.
  • the plurality of light-emitting unit groups include a visual center unit group. The remaining plurality of light-emitting unit groups are respectively Located on both sides of the visual center unit group;
  • the adjustment layer is provided on one side of the backlight surface of the light-emitting layer.
  • the adjustment layer includes a plurality of adjustment unit groups.
  • the adjustment unit group is arranged corresponding to the light-emitting unit group.
  • the adjustment unit group is in contact with the light-emitting unit group.
  • One side of the unit group in contact is an inclined surface with an inclination angle, so that the light-emitting surface of the corresponding light-emitting unit in the light-emitting unit group is deflected by a preset angle;
  • the light-emitting surfaces of the light-emitting units in the light-emitting unit groups on both sides of the visual center unit group are inclined toward the visual center unit group.
  • the inclination angle of one of the adjustment unit groups close to the visual center unit group is smaller than that of the other adjustment unit group far away from the visual center unit group. Adjust the degree of the tilt angle of the unit group.
  • the display panel includes an array substrate
  • the adjustment layer includes the array substrate
  • the array substrate layer includes a substrate layer, a control device layer disposed on the substrate layer, and a passivation layer disposed on a side of the control device layer facing away from the substrate layer;
  • the substrate layer and the control device layer corresponding to different adjustment unit groups have the same thickness, and the passivation layer corresponding to different adjustment unit groups has a plurality of passivation layers. Different passivation unit groups have different inclination angles on one side facing the light-emitting unit.
  • the passivation layer is made of silicon nitride.
  • This application also provides a display panel, including:
  • the light-emitting layer includes a plurality of light-emitting unit groups arranged along a first direction.
  • the light-emitting unit group includes at least one light-emitting unit.
  • the plurality of light-emitting unit groups include a visual center unit group. The remaining plurality of light-emitting unit groups are respectively Located on both sides of the visual center unit group;
  • An adjustment layer is provided on one side of the light-emitting surface of the light-emitting layer, the adjustment layer includes a plurality of adjustment unit groups, and the plurality of adjustment unit groups include an adjustment center unit group corresponding to the visual center unit group;
  • the refractive index of the material of the adjustment unit group on both sides of the adjustment center unit group is greater than the refractive index of the material of the adjustment center unit group.
  • the refractive index of the material of one of the adjustment unit groups close to the visual center unit group is smaller than that of the material of the other adjustment unit group far away from the visual center unit group. Adjusts the refractive index of the cell group's material.
  • the materials of different adjustment unit groups in the adjustment layer are different.
  • the materials of the adjustment unit groups include magnesium fluoride, silicon dioxide, alumina, silicon monoxide, titanium dioxide, and pentoxide.
  • the light-emitting layer includes: an anode layer, a pixel definition layer disposed on the anode layer, and a cathode layer disposed on the pixel definition layer.
  • a plurality of pixel openings are provided on the pixel definition layer, one light-emitting unit corresponds to one pixel opening, the pixel opening is filled with organic light-emitting material, and the cathode layer covers the pixel Open your mouth.
  • the adjustment layer is disposed above the cathode layer of the light-emitting layer.
  • an adjustment layer is provided on one side of the light-emitting layer.
  • the adjustment layer can be provided on the side of the backlight surface of the light-emitting layer or on the side of the light-emitting surface of the light-emitting layer.
  • the adjustment layer is provided on the side of the light-emitting layer close to the substrate
  • the heights of the light-emitting unit groups located on both sides of the visual center unit group are smaller than the height of the visual center unit group, thereby making the emitted light of the light-emitting units
  • the angle between the normal line and the normal line of the corresponding light-emitting unit is smaller than before the adjustment layer is provided, which has the effect of reducing the chromaticity difference of the electroluminescent display device caused by the difference in viewing angles of the user;
  • each group is smaller than the height of the visual center unit group, thereby making the angle between the emitted light of the light-emitting unit and the normal line of the corresponding light-emitting unit smaller than before the adjustment layer is provided, thereby reducing electroluminescence.
  • the refractive index of the materials of the adjustment unit group on both sides of the adjustment center unit group is greater than the refractive index of the material of the adjustment center unit group, so that The angle between the emitted light of the light-emitting unit and the normal of the corresponding light-emitting unit is smaller than before the adjustment layer is provided, so as to reduce the distance between the light-emitting unit group adjacent to the visual center unit group and the visual center unit.
  • Adopting the above technical solutions can effectively reduce the chromaticity difference of the electroluminescent display device due to the difference in viewing angles of the user, and further improve the display effect of the display panel.
  • Figure 1 is a schematic structural diagram of the light-emitting layer of a display panel in the prior art
  • Figure 2 is a schematic structural diagram of the luminescent layer of a display panel provided by an embodiment of the present application.
  • Figure 3 is a structural top view of a display panel provided by an embodiment of the present application.
  • Figure 4 is a cross-sectional view of A-A’ in Figure 3;
  • Figure 5 is a schematic structural diagram of the connection between the adjustment layer and the light-emitting layer provided by an embodiment of the present application;
  • Figure 6 is a schematic structural diagram of the connection between the adjustment layer and the light-emitting layer provided by the embodiment of the present application;
  • Figure 7 is a schematic structural diagram of the connection between the adjustment layer and the light-emitting layer provided by an embodiment of the present application.
  • Figure 8 is a structural top view of another display panel provided by an embodiment of the present application.
  • Figure 9 is a schematic diagram of the luminescent layer structure of another display panel provided by an embodiment of the present application.
  • Figure 10 is a schematic structural diagram of adjusting the deflection of a light-emitting unit provided by an embodiment of the present application.
  • FIG. 11 is a schematic diagram of the light-emitting layer structure of another display panel provided by an embodiment of the present application.
  • An embodiment of the present application provides a display panel. Each is explained in detail below. It should be noted that the order of description of the following embodiments does not limit the preferred order of the embodiments.
  • a top-emitting device structure is usually used.
  • This structure is an overlapping total reflective anode, an organic light-emitting layer, and a semi-reflective cathode. This structure allows the light-emitting device structure to form a microcavity.
  • An embodiment of the present application provides a display panel, as shown in Figures 2, 3 and 4.
  • the display panel includes:
  • the light-emitting layer includes a plurality of light-emitting unit groups G201 arranged along the first direction F1.
  • the light-emitting unit group G201 includes at least one light-emitting unit 201.
  • the plurality of light-emitting unit groups G201 includes a visual center unit group G201C, and the remaining plurality of light-emitting unit groups G201 include a visual center unit group G201C.
  • the light-emitting unit group G201 is located on both sides of the visual center unit group G201C respectively;
  • the adjustment layer 300 is provided on one side of the backlight surface of the light-emitting layer.
  • the adjustment layer 300 includes a plurality of adjustment unit groups, and the adjustment unit group is arranged corresponding to the light-emitting unit group G201;
  • the plurality of adjustment unit groups have multiple thicknesses, so that the heights of the light-emitting unit groups G201 located on both sides of the visual center unit group G201C are smaller than the height of the visual center unit group G201C.
  • the display panel is a rectangular display panel as an example.
  • the display panel includes a long side (length direction) and a short side (width direction);
  • the center line CL of the display panel passes through the center of the display panel and is perpendicular to the display panel.
  • the observation point of the human eye may or may not be on the center line CL.
  • the two directions F2 are parallel to the center line CL, and the first direction F1 and the second direction F2 form a preset angle.
  • the light-emitting unit group G201 corresponding to the display panel when viewed vertically by the human eye is the visual center unit group G201C.
  • the visual center unit group G201C includes a plurality of visual center units 201C.
  • the observation point of the human eye is not necessarily on the plane of the display panel passing through the center line CL and perpendicular to the display panel. Therefore, the visual center unit group G201C set according to the user's observation point is not limited to The light-emitting unit group G201 is at the center of the display panel. However, in this embodiment, the human eye observation point is located on a plane that passes through the center line CL and is perpendicular to the display panel.
  • the display panel includes an array substrate and a light-emitting layer disposed on the array substrate.
  • the array substrate includes a substrate layer and a control device layer.
  • the control device layer includes a plurality of devices that control the light emitting unit 201. control device.
  • the light-emitting layer includes a plurality of light-emitting unit groups G201 arranged along the first direction F1.
  • the light-emitting unit group G201 includes at least one light-emitting unit 201.
  • the light-emitting unit group G201 may include multiple columns of light-emitting units 201 arranged along the length direction of the display panel. The number of light-emitting units 201 in each column is the same. The number of columns of light-emitting units 201 in different light-emitting unit groups G201 may be the same.
  • the embodiment in Figure 8 is the same number of columns of light-emitting units 201 in different light-emitting unit groups G201
  • the number of the light-emitting units 201 in each column of different light-emitting unit groups G201 is the same, and the first The angle between the direction F1 and the second direction F2 may be 90°.
  • the light-emitting layer includes: an anode layer 2013, a pixel definition layer 2014 provided on the anode layer 2013, and a pixel definition layer 2014 provided on the anode layer 2013.
  • the cathode layer 2011 on the pixel definition layer 2014 (not shown in Figures 5 to 7); a plurality of pixel openings are provided on the pixel definition layer 2014, one of the light-emitting units 201 corresponds to one of the pixel openings, and the pixel openings are filled with Organic Luminescent Materials 2012.
  • the anode layer 2013 of the light-emitting layer is controllably connected to the control device on the array substrate.
  • the adjustment layer 300 may include an array substrate, or may be a film layer separately provided between the array substrate and the light-emitting layer.
  • the specific material and structure are not limited, that is, the height of the light-emitting unit 201 can be adjusted.
  • the structures of layer 300 are all within the protection scope of this application.
  • the adjustment layer 300 includes a plurality of adjustment unit groups.
  • the adjustment unit group includes a plurality of adjustment units.
  • the adjustment unit group and the light-emitting unit group G201 correspond to each other.
  • the adjustment units in the adjustment unit group are related to the light-emitting units.
  • the light-emitting units 201 in the unit group G201 correspond to each other.
  • the anode layer 2013 of the light-emitting layer is disposed on the adjustment layer 300 so that the height of the light-emitting unit 201 can be adjusted through the thickness of the adjustment unit.
  • the adjustment unit groups are set to have different thicknesses.
  • the height of the corresponding light-emitting unit group G201 can be adjusted to reduce the The chromaticity difference between the light-emitting unit group G201 adjacent to the visual center unit group G201C and the visual center unit group G201C, that is, the emitted light of the light-emitting unit 201 in the different light-emitting unit group G201 (for the user
  • the angle between the observed outgoing light of the light-emitting unit 201) and the normal line of the corresponding light-emitting unit 201 is smaller than before the adjustment layer 300 is provided (i.e., ⁇ ) (it can be seen by comparing Figure 1 and Figure 2 (out of the angle relationship), the use of the above technical solution can effectively reduce the chromaticity difference of the electroluminescent display device due to the difference in viewing angles of the user, further improve the display effect of the
  • the thickness of one of the adjustment unit groups close to the visual center unit group G201C is greater than the thickness of the other adjustment unit group far away from the visual center unit group G201C. The thickness of the adjustment unit group.
  • the thickness of the adjustment unit group is in the extending direction from the center line CL to the short side of the display panel (the forward direction (+F1) and the reverse direction of the first direction F1 It shows a gradually decreasing trend toward (-F1)).
  • the display panel includes an array substrate
  • the adjustment layer 300 includes the array substrate
  • the array substrate includes a substrate layer, a control device layer disposed on the substrate layer, and a passivation layer PLN disposed on a side of the control device layer away from the substrate layer.
  • Different adjustment unit groups have different The thickness of can be understood as the substrate layer corresponding to different adjustment unit groups in the array substrate has different thicknesses, or it can also be understood as the control device layer corresponding to different adjustment unit groups in the array substrate has different thicknesses, or as the array substrate corresponding to different thicknesses.
  • the passivation layer PLN of the adjustment unit group has different thicknesses.
  • the thickness of the display panel can be effectively reduced, making the display panel thinner and lighter, and the production process is convenient. .
  • the array substrate layer includes a substrate layer (not shown), a control device layer (not shown) disposed on the substrate layer, and a control device layer disposed on the control layer.
  • the passivation layer PLN on the side of the device layer facing away from the substrate layer;
  • the substrate layer and the control device layer corresponding to different adjustment unit groups have the same thickness, and the passivation layer PLN corresponding to different adjustment unit groups has different thicknesses. Thickness, by comparing Figure 5, Figure 6 and Figure 7, it can be seen that h3>h2>h1.
  • the passivation layer PLN may be made of silicon nitride.
  • the passivation layer PLN on the uppermost layer of the array substrate can prevent the metal traces of the control device layer of the array substrate from breaking due to the height difference between the film layers, affecting the normal display of the display panel.
  • setting different thicknesses of the uppermost passivation layer PLN corresponding to the adjustment unit group can not only achieve the effect of isolating the control device and the light-emitting unit 201, but also solve the problem of chromaticity between adjacent light-emitting unit groups G201. Bad question.
  • An embodiment of the present application also provides a display panel, as shown in Figures 9 and 10.
  • the display panel includes:
  • the light-emitting layer includes a plurality of light-emitting unit groups G201 arranged along the first direction F1.
  • the light-emitting unit group G201 includes at least one light-emitting unit 201.
  • the plurality of light-emitting unit groups G201 includes a visual center unit group G201C, and the remaining plurality of light-emitting unit groups G201 include a visual center unit group G201C.
  • the light-emitting unit group G201 is located on both sides of the visual center unit group G201C respectively;
  • the adjustment layer 300 is provided on one side of the backlight surface of the light-emitting layer.
  • the adjustment layer 300 includes a plurality of adjustment unit groups.
  • the adjustment unit group is arranged corresponding to the light-emitting unit group G201.
  • the adjustment unit group is The side surface in contact with the light-emitting unit 201 is an inclined surface M1 with an inclination angle ⁇ , so that the light-emitting surface P1 of the light-emitting unit 201 is deflected toward the visual center unit group G201C.
  • Different positions corresponding to the light-emitting unit group G201 The degrees of the inclination angle ⁇ of the adjustment unit groups are different.
  • the display panel is a rectangular display panel as an example.
  • the display panel includes a long side (length direction) and a short side (width direction);
  • the display panel includes a center line CL.
  • the center line CL passes through the center of the display panel and is perpendicular to the display panel.
  • the observation point of the human eye may be on the center line CL or not.
  • the second direction F2 is parallel to the center line CL, and the first direction F1 and the second direction F2 form a preset angle.
  • the light-emitting unit group G201 corresponding to the display panel when viewed vertically by the human eye is the visual center unit group G201C.
  • the visual center unit group G201C includes a plurality of visual center units 201C.
  • the visual center unit group G201C set according to the user's observation point is not limited to the display panel.
  • the display panel includes an array substrate and a light-emitting layer disposed on the array substrate.
  • the array substrate includes a substrate layer and a control device layer.
  • the control device layer includes a plurality of devices that control the light emitting unit 201. control device.
  • the light-emitting layer includes a plurality of light-emitting unit groups G201 arranged along the first direction F1.
  • the light-emitting unit group G201 includes at least one light-emitting unit 201.
  • the light-emitting unit group G201 may include multiple columns of light-emitting units 201 arranged along the length direction of the display panel.
  • the number of light-emitting units 201 in each column is the same.
  • the number of columns of light-emitting units 201 in different light-emitting unit groups G201 may be the same or different.
  • the number of the light-emitting units 201 in each column of the different light-emitting unit groups G201 is the same, and the angle between the first direction F1 and the second direction F2 may be 90°.
  • the light-emitting layer includes: an anode layer 2013, a pixel definition layer 2014 disposed on the anode layer 2013, and a cathode layer 2011 (not shown) disposed on the pixel definition layer 2014. ); a plurality of pixel openings are provided on the pixel definition layer 2014, one light-emitting unit 201 corresponds to one pixel opening, and the pixel openings are filled with organic light-emitting material 2012 (not shown).
  • the adjustment layer 300 may include an array substrate, or may be a film layer separately provided between the array substrate and the light-emitting layer.
  • the specific material and structure are not limited, that is, it can adjust the light emission in the light-emitting unit group G201.
  • the structure of the tilt angle of the unit 201 is within the protection scope of this application.
  • the anode layer 2013 of the light-emitting layer is controllably connected to the control device on the array substrate.
  • the adjustment layer 300 includes a plurality of adjustment unit groups.
  • the adjustment unit group includes a plurality of adjustment units.
  • the adjustment unit group and the light-emitting unit group G201 correspond to each other.
  • the adjustment units in the adjustment unit group are related to the light-emitting units.
  • the light-emitting units 201 in the unit group G201 correspond to each other.
  • the anode layer 2013 of the light-emitting layer is disposed on the adjustment layer 300 so that the tilt angle of the light-emitting unit 201 can be adjusted through the tilt angle of the adjustment unit.
  • the light-emitting units 201 in the light-emitting unit group G201 located on both sides of the center line CL The tilt direction is opposite.
  • the inclination angles of the inclined surfaces M1 of any two adjacent adjustment units may be the same or different.
  • the adjustment layer 300 when the adjustment layer 300 is disposed on the side of the light-emitting layer close to the substrate, different adjustment unit groups are provided with inclined surfaces M1 having different inclination angles, and the inclination directions are all toward the visual center unit group G201C, thereby adjusting the light emission.
  • the specific tilt angle number of the unit group G201 can reduce the chromaticity difference between the light-emitting unit group G201 adjacent to the visual center unit group G201C and the visual center unit group G201C.
  • different light-emitting unit groups can The angle between the emitted light of the light-emitting unit 201 in G201 (the emitted light of the light-emitting unit 201 observed by the user) and the normal line of the corresponding light-emitting unit 201 is smaller than before the adjustment layer 300 is provided (i.e. ⁇ ⁇ ) (Compare Figure 1 and Figure 9), in other words, using the above technical solution can effectively reduce the chromaticity difference of the electroluminescent display device due to the difference in viewing angles of the user, further improve the display effect of the display panel, and improve User experience.
  • the degree of the inclination angle ⁇ of one of the adjustment unit groups close to the visual center unit group G201C is smaller than that of the other one far away from the visual center unit group G201C.
  • the degree of the inclination angle ⁇ of the adjustment unit group is smaller than that of the other one far away from the visual center unit group G201C.
  • the center line CL passes through the visual center unit group G201C.
  • the tilt angle of the adjustment unit group is in the extending direction from the center line CL to the short side of the display panel (the forward direction (+F1) and the reverse direction of the first direction F1 (-F1)) shows a gradually increasing trend.
  • the display panel includes an array substrate
  • the adjustment layer 300 includes the array substrate
  • the array substrate includes a substrate layer, a control device layer disposed on the substrate layer, and a passivation layer PLN disposed on a side of the control device layer away from the substrate layer.
  • Different adjustment unit groups have different The number of tilt angles can be understood as the substrate layers corresponding to different adjustment unit groups in the array substrate have different number of tilt angles, or it can also be understood as the number of control device layers in the array substrate corresponding to different adjustment unit groups having different number of tilt angles, or The passivation layer PLN corresponding to different adjustment unit groups in the array substrate has different tilt angle numbers.
  • the thickness of the display panel can be effectively reduced, so that the display panel can achieve color degradation. While achieving the same effect, there is no need to add additional film layers, making the display panel thinner and lighter, and the production process is convenient.
  • the array substrate layer includes a substrate layer (not shown), a control device layer (not shown) disposed on the substrate layer, and a control device layer disposed on the control device layer.
  • Passivation layer PLN on the side facing away from the substrate layer;
  • the substrate layer and the control device layer corresponding to different adjustment unit groups have the same thickness, and the passivation layer PLN corresponding to different adjustment unit groups has multiple Passivation layer PLN unit group, one side of the passivation unit group facing the light-emitting unit 201 is an inclined surface M1, and has different inclination angle ⁇ .
  • the passivation layer PLN may be made of silicon nitride.
  • the passivation layer PLN on the uppermost layer of the array substrate can prevent the metal wiring of the control device layer of the array substrate from being affected by the height difference between the film layers. fracture occurs, affecting the normal display of the display panel.
  • Setting different tilt angles for the uppermost passivation layer PLN corresponding to the adjustment unit group can not only achieve the effect of isolating the control device and the light-emitting unit 201, but also can adjust the phase.
  • the chromaticity difference between adjacent light-emitting units 201 can be used to have different tilt angles for different adjustment unit groups.
  • the above technical solutions for display panels can be used in a superimposed manner.
  • an adjustment layer 300 is provided on one side of the backlight of the light-emitting layer.
  • Multiple adjustment unit groups corresponding to the adjustment layer 300 have different thicknesses.
  • the corresponding adjustment units The side of the group close to the light-emitting unit group G201 also has an inclined surface M1, so that the light-emitting unit group G201 on the light-emitting layer has different heights.
  • the light-emitting surface of the corresponding light-emitting unit 201 is deflected toward the visual center unit group G201C, which can make the light-emitting layer
  • the adjustment by the adjustment layer 300 can overcome the chromaticity difference caused by the difference in viewing angles of the user.
  • An embodiment of the present application also provides a display panel, as shown in Figure 11.
  • the display panel includes:
  • the light-emitting layer includes a plurality of light-emitting unit groups G201 arranged along the first direction F1.
  • the light-emitting unit group G201 includes at least one light-emitting unit 201.
  • the plurality of light-emitting unit groups G201 includes a visual center unit group G201C, and the remaining plurality of light-emitting unit groups G201 include a visual center unit group G201C.
  • the light-emitting unit group G201 is located on both sides of the visual center unit group G201C respectively;
  • the adjustment layer 300 is disposed on one side of the light-emitting surface P1 of the light-emitting layer.
  • the adjustment layer 300 includes a plurality of adjustment unit groups, and the plurality of adjustment unit groups include an adjustment center corresponding to the visual center unit group G201C. unit group;
  • the refractive index of the material of the adjustment unit group on both sides of the adjustment center unit group is greater than the refractive index of the material of the adjustment center unit group.
  • the display panel includes a center line CL.
  • the center line CL passes through the center of the display panel and is perpendicular to the display panel.
  • the observation point of the human eye may be on the center line CL or not.
  • the second direction F2 is parallel to the center line CL, the first direction F1 and the second direction F2 form a preset angle, and the first direction F1 and the second direction F2 form a preset angle.
  • the angle between the two directions F2 can be 90°.
  • the light-emitting layer includes: an anode layer 2013, a pixel definition layer 2014 provided on the anode layer 2013, and a cathode layer 2011 provided on the pixel definition layer 2014; the pixel definition layer 2014 is provided with There are a plurality of pixel openings, one light-emitting unit 201 corresponds to one pixel opening, the pixel opening is filled with organic light-emitting material 2012, and the adjustment layer 300 is disposed on the cathode layer 2011.
  • the materials of different adjustment unit groups in the adjustment layer 300 are different, including but not limited to magnesium fluoride, silicon dioxide, alumina, silicon monoxide, titanium dioxide, titanium trioxide, titanium trioxide, One or more combinations of titanium monoxide, hafnium oxide, zirconium oxide, niobium oxide, magnesium oxide, zinc oxide, yttrium oxide, aluminum fluoride, and barium fluoride.
  • the adjustment unit groups can be set to have different refractive indexes to reduce the visual center unit group G201C adjacent to the light-emitting unit group.
  • the chromaticity difference between G201 and the visual center unit group G201C can be effectively reduced by using the above technical solutions due to the difference in viewing angles of the user, further improving the display effect of the display panel.
  • the refractive index of the material of the adjustment unit group close to the visual center unit group G201C is smaller than that of the material of the adjustment unit group far away from the visual center unit group G201C. Adjusts the refractive index of the unit group's material.
  • center line CL passes through the visual center unit group G201C;
  • the adjustment layer 300 includes a fourth adjustment unit group, a third adjustment unit group, a second adjustment unit group and a fourth adjustment unit group extending from the center to the short edge of the display panel.
  • the refractive index of the material of the fourth adjustment unit 3010 in the fourth adjustment unit group is n4
  • the refractive index of the material of the third adjustment unit 3011 in the third adjustment unit group is n3
  • the refractive index of the material of the third adjustment unit 3011 in the third adjustment unit group is n3.
  • the refractive index of the material of the second adjustment unit 3012 in the adjustment unit group is n2 and the refractive index of the material of the first adjustment unit 3013 in the first adjustment unit group is n1, corresponding to n4 ⁇ n3 ⁇ n2 ⁇ n1.
  • the materials have different refractive indexes, and in the extending direction from the center line CL to the short side of the display panel (the forward direction (+F1) of the first direction F1 and reverse direction (-F1)), the refractive index of the material of each adjustment unit group gradually increases, so that there is a small chromaticity difference between any two adjacent light-emitting units 201 in the display panel, further improving the uniformity of the display panel. sex.
  • this application provides the adjustment layer 300 on one side of the light-emitting layer.
  • the adjustment layer 300 can be placed on the side of the light-emitting layer away from the substrate, or it can also be placed on the side close to the substrate.
  • the adjustment unit group can be provided with different thicknesses or an adjustment unit group with an inclined surface M1.
  • the inclination angle ⁇ of the inclined surface M1 of different adjustment unit groups is different; when the adjustment layer 300 is provided on the light-emitting layer away from the substrate
  • the adjustment unit group can be set to have different refractive index.
  • the final effect is to make the sandwich between the emitted light of the light-emitting unit 201 in the different light-emitting unit group G201 and the normal of the corresponding light-emitting unit 201.
  • the angle is smaller than before the adjustment layer 300 is provided.

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Abstract

一种显示面板,显示面板包括发光层和调整层(300),发光层包括多个沿第一方向(F1)排列的发光单元组(G201),每一发光单元组(G201)包括至少一发光单元(201),多个发光单元组(G201)包括一视觉中心单元组(G201C);多个调整单元组具有多个厚度,以使位于视觉中心单元组(G201C)两侧的发光单元组(G201)的高度均小于视觉中心单元组(G201C)的高度。

Description

显示面板 技术领域
本申请涉及显示领域,尤其涉及一种显示面板。
背景技术
在有机电致发光显示面板中,通常采用顶发光器件结构,该结构为重叠设置的全反射阳极、有机发光层和半反射阴极,该结构使得发光器件结构形成微腔。
当人眼观测处确定时,针对不同位置的发光器件发出的光,人眼的观测角度是不同的,发光器件距离人眼观测处越远,人眼观测到的发光器件发出的光线与相对应的发光器件的法线夹角越大,在上述情况下容易导致在该观测处观测到的多个发光器件的色度存在差异,即屏幕在观看时存在色差。该问题在大尺寸的有机发光半导体显示面板中尤为明显。
技术问题
本申请实施例提供一种显示面板,以解决因显示面板在不同角度观看时产生的色度差异的技术问题。
技术解决方案
为解决上述问题,本申请提供的技术方案如下:
本申请实施例提供了一种显示面板,包括:
发光层,包括多个沿第一方向排列的发光单元组,所述发光单元组包括至少一发光单元,多个所述发光单元组包括一视觉中心单元组,其余多个所述发光单元组分别位于所述视觉中心单元组的两侧;
调整层,设置于所述发光层背光面的一侧,所述调整层包括多个调整单元组,所述调整单元组与所述发光单元组相对应设置;
其中,在垂直所述发光层的方向上,多个所述调整单元组具有多个厚度,以使位于所述视觉中心单元组两侧的所述发光单元组的高度均小于所述视觉中心单元组的高度。
在一实施例中,任意两所述调整单元组中,其中一靠近所述视觉中心单元组的所述调整单元组的厚度大于另一远离所述视觉中心单元组的所述调整单元组的厚度。
在一实施例中,所述显示面板包括阵列基板,所述调整层包括所阵列基板。
在一实施例中,所述显示面板包括阵列基板,所述调整层包括所阵列基板。
在一实施例中,所述阵列基板层包括衬底层、设置于所述衬底层上的控制器件层以及设置于所述控制器件层背离所述衬底层一侧的钝化层;
在垂直所述发光层的方向上,对应不同所述调整单元组的所述衬底层和所述控制器件层的厚度均相同,对应不同所述调整单元组的所述钝化层具有不同的厚度。
在一实施例中,所述钝化层的材料包括氮化硅。
在一实施例中,所述发光层包括:阳极层、设置于所述阳极层上的像素定义层,设置于所述像素定义层上的阴极层。
在一实施例中,所述像素定义层上设置有多个像素开口,一所述发光单元对应一所述像素开口,所述像素开口内填充有机发光材料。
在一实施例中,所述发光层的所述阳极层设置于所述调整层上。
本申请还提供一种显示面板,包括:
发光层,包括多个沿第一方向排列的发光单元组,所述发光单元组包括至少一发光单元,多个所述发光单元组包括一视觉中心单元组,其余多个所述发光单元组分别位于所述视觉中心单元组的两侧;
调整层,设置于所述发光层背光面的一侧,所述调整层包括多个调整单元组,所述调整单元组与所述发光单元组相对应设置,所述调整单元组与所述发光单元组相接触的一侧面为具有一倾斜角的倾斜面,使对应的所述发光单元组内的所述发光单元的出光面偏转一预设角度;
其中,所述视觉中心单元组两侧的所述发光单元组内的所述发光单元的发光面均朝所述视觉中心单元组倾斜。
在一实施例中,任意两所述调整单元组中,其中一靠近所述视觉中心单元组的所述调整单元组的所述倾斜角的度数小于另一远离所述视觉中心单元组的所述调整单元组的所述倾斜角的度数。
在一实施例中,所述显示面板包括阵列基板,所述调整层包括所阵列基板。
在一实施例中,所述阵列基板层包括衬底层、设置于所述衬底层上的控制器件层以及设置于所述控制器件层背离所述衬底层一侧的钝化层;
在垂直所述发光层的方向上,对应不同所述调整单元组的所述衬底层和所述控制器件层的厚度均相同,对应不同所述调整单元组的所述钝化层具有多个钝化层单元组,不同所述钝化单元组朝向所述发光单元的一侧面具有不同的倾斜角。
在一实施例中,所述钝化层的材料包括氮化硅。
本申请还提供一种显示面板,包括:
发光层,包括多个沿第一方向排列的发光单元组,所述发光单元组包括至少一发光单元,多个所述发光单元组包括一视觉中心单元组,其余多个所述发光单元组分别位于所述视觉中心单元组的两侧;
调整层,设置于所述发光层出光面的一侧,所述调整层包括多个调整单元组,多个所述调整单元组包括一与所述视觉中心单元组对应的调整中心单元组;
其中,所述调整中心单元组两侧的所述调整单元组的材料的折射率均大于所述调整中心单元组的材料的折射率。
在一实施例中,所述任意两所述调整单元组中,其中一靠近所述视觉中心单元组的所述调整单元组的材料的折射率小于另一远离所述视觉中心单元组的所述调整单元组的材料的折射率。
在一实施例中,所述调整层中不同所述调整单元组的材料均不相同,所述调整单元组的材料包括氟化镁、二氧化硅、氧化铝、一氧化硅、二氧化钛、五氧化三钛、三氧化二钛、一氧化钛、氧化铪、氧化锆、氧化铌、氧化镁、氧化锌、氧化钇、氟化铝、氟化钡中的一种或多种组合。
在一实施例中,所述发光层包括:阳极层、设置于所述阳极层上的像素定义层,设置于所述像素定义层上的阴极层。
在一实施例中,所述像素定义层上设置有多个像素开口,一所述发光单元对应一所述像素开口,所述像素开口内填充有机发光材料,且所述阴极层覆盖所述像素开口。
在一实施例中,所述调整层设置于所述发光层的所述阴极层上方。
有益效果
本申请通过在发光层的一侧设置调整层,调整层可以设置于发光层背光面的一侧,也可以设置于发光层出光面的一侧,当调整层设置于发光层靠近基板的一侧时,通过设置不同的调整单元组具有多个厚度,使得位于所述视觉中心单元组两侧的所述发光单元组的高度均小于所述视觉中心单元组的高度,进而使得发光单元的出射光与对应的发光单元的法线之间的夹角相较于设置调整层之前更小,起到降低电致发光显示装置由于用户观看的视角差异导致的色度差的效果;
通过设置所述视觉中心单元组两侧的所述发光单元组内的所述发光单元的发光面均朝所述视觉中心单元组倾斜,使得位于所述视觉中心单元组两侧的所述发光单元组的高度均小于所述视觉中心单元组的高度,进而使得发光单元的出射光与对应的发光单元的法线之间的夹角相较于设置调整层之前更小,起到降低电致发光显示装置由于用户观看的视角差异导致的色度差的效果;
当调整层设置于发光层背离基板的一侧时,通过设置所述调整中心单元组两侧的所述调整单元组的材料的折射率均大于所述调整中心单元组的材料的折射率,使得发光单元的出射光与对应的发光单元的法线之间的夹角相较于设置调整层之前更小,达到降低所述视觉中心单元组相邻的所述发光单元组与所述视觉中心单元组之间的色度差的效果;
采用上述技术方案均可以有效降低电致发光显示装置由于用户观看的视角差异导致的色度差,进一步提升显示面板的显示效果。
附图说明
图1是现有技术的显示面板发光层结构示意图;
图2是本申请实施例提供的一种显示面板发光层结构示意图;
图3是本申请实施例提供的一种显示面板的结构俯视图;
图4是图3中A-A’的截面图;
图5是本申请实施例提供的一种调节层和发光层连接处的结构示意图;
图6是本申请实施例提供的一种调节层和发光层连接处的结构示意图;
图7是本申请实施例提供的一种调节层和发光层连接处的结构示意图;
图8是本申请实施例提供的另一种显示面板的结构俯视图;
图9是本申请实施例提供的另一种显示面板的发光层结构示意图;
图10是本申请实施例提供的一种调整发光单元偏转的结构示意图;
图11是本申请实施例提供的另一种显示面板的发光层结构示意图。
本发明的实施方式
本申请提供一种用于显示面板,为使本申请的目的、技术方案及效果更加清楚、明确,以下参照附图并举实施例对本申请进一步详细说明。应当理解,此处所描述的具体实施例仅用以解释本申请,并不用于限定本申请。
本申请实施例提供一种显示面板。以下分别进行详细说明。需说明的是,以下实施例的描述顺序不作为对实施例优选顺序的限定。
在有机电致发光显示面板中,通常采用顶发光器件结构,该结构为重叠设置的全反射阳极、有机发光层和半反射阴极,该结构使得发光器件结构形成微腔。
如图1所示,当人眼观测处确定时,针对不同位置的发光器件发出的光,人眼的观测角度是不同的,发光器件距离人眼观测处越远,人眼观测到的发光器件发出的光线与相对应的发光器件的法线夹角越大,即图1中θ1>θ2>θ3,在上述情况下容易导致在该观测处观测到的多个发光器件的色度存在差异,即屏幕在观看时存在色差。该问题在大尺寸的有机发光半导体显示面板中尤为明显。
为了解决上述技术问题,本申请提供了下述技术方案,具体参见下述实施例。
本申请实施例提供一种显示面板,如图2、图3和图4所示,所述显示面板包括:
发光层,包括多个沿第一方向F1排列的发光单元组G201,所述发光单元组G201包括至少一发光单元201,多个所述发光单元组G201包括一视觉中心单元组G201C,其余多个所述发光单元组G201分别位于所述视觉中心单元组G201C的两侧;
调整层300,设置于所述发光层背光面的一侧,所述调整层300包括多个调整单元组,所述调整单元组与所述发光单元组G201相对应设置;
其中,在垂直所述发光层的方向上,多个所述调整单元组具有多个厚度,以使位于所述视觉中心单元组G201C两侧的所述发光单元组G201的高度均小于所述视觉中心单元组G201C的高度。
具体地,本实施例中以显示面板为矩形显示面板为例进行说明,所述显示面板包括长边(长度方向)和短边(宽度方向);
具体地,显示面板的中心线CL穿过所述显示面板的中心,且与所述显示面板垂直,人眼观测处可以在所述中心线CL上,也可以不在所述中心线CL上,第二方向F2与所述中心线CL平行,所述第一方向F1与所述第二方向F2呈一预设夹角。
具体地,人眼观测处垂直所述显示面板对应的发光单元组G201为视觉中心单元组G201C。
具体地,视觉中心单元组G201C内包括多个视觉中心单元201C。
需要说明的是,人眼观测处并不一定在所述显示面板经过中心线CL且垂直所述显示面板的平面上,因此根据用户的观测处设定的视觉中心单元组G201C也并不仅限定为显示面板中心处的发光单元组G201,但是在本实施例中,以人眼观测处位于述显示面板经过中心线CL且垂直所述显示面板的平面上为例进行说明。
具体地,所述显示面板包括阵列基板和设置于所述阵列基板上的发光层,所述阵列基板包括衬底层和控制器件层,所述控制器件层包括多个控制所述发光单元201发光的控制器件。
具体地,所述发光层包括多个沿第一方向F1排列的发光单元组G201,所述发光单元组G201包括至少一发光单元201,在一具体实施例中,如图3和图8所示,所述发光单元组G201可以包括多列沿所述显示面板的长度方向排布的发光单元201,每一列发光单元201的数量相同,不同的发光单元组G201内发光单元201的列数可以相同也可以不同(图8中的为不同的发光单元组G201内发光单元201的列数相同的实施例),不同发光单元组G201中每一列的所述发光单元201的数量相同,所述第一方向F1与所述第二方向F2的夹角可以为90°。
具体地,如图2、图5、图6、图7所示,所述发光层包括:阳极层2013、设置于所述阳极层2013上的像素定义层2014,设置于所述像素定义层2014上的阴极层2011(图5~图7中未示出);所述像素定义层2014上设置有多个像素开口,一所述发光单元201对应一所述像素开口,所述像素开口内填充有机发光材料2012。
具体地,所述发光层的所述阳极层2013与所述阵列基板上的控制器件控制连接。
具体地,所述调整层300可以包括阵列基板,也可以为单独设置于阵列基板和所述发光层之间的膜层,具体材料和结构不作限定,即能够调整所述发光单元201高度的调整层300结构均在本申请的保护范围内。
具体地,所述调整层300包括多个调整单元组,所述调整单元组包括多个调整单元,所述调整单元组与所述发光单元组G201互相对应,调整单元组内的调整单元与发光单元组G201内的发光单元201互相对应。
具体地,所述发光层的阳极层2013设置于所述调整层300上,使得所述发光单元201的高度能够通过所述调整单元的厚度进行调整。
可以理解的是,当调整层300设置于发光层靠近基板的一侧时,设置调整单元组具有不同的厚度,如图4所示,可以设置调整其对应的发光单元组G201的高度,以降低所述视觉中心单元组G201C相邻的所述发光单元组G201与所述视觉中心单元组G201C之间的色度差,即,使不同的发光单元组G201内发光单元201的出射光(为用户观察到的该发光单元201的出射光)与对应的发光单元201的法线之间的夹角相较于设置调整层300之前更小(即φ<θ)(对比图1和图2可以看出角度关系),采用上述技术方案可以有效降低电致发光显示装置由于用户观看的视角差异导致的色度差,进一步提升显示面板的显示效果,提升用户体验感。
在一实施例中,如图2所示,任意两所述调整单元组中,其中一靠近所述视觉中心单元组G201C的所述调整单元组的厚度大于另一远离所述视觉中心单元组G201C的所述调整单元组的厚度。
具体地,如图2和图3所示,所述调整单元组的厚度在由所述中心线CL至所述显示面板短边的延伸方向(第一方向F1的正向(+F1)和反向(-F1))上呈逐渐递减的趋势。
可以理解的是,通过设置不同调整单元组具有不同的厚度,且在由所述中心线CL至所述显示面板短边的延伸方向(第一方向F1的正向(+F1)和反向(-F1))上呈逐级递减的变化趋势,使得显示面板中任意相邻两发光单元组G201之间的色度差保持平稳,提高显示面板显示的均一性。
在一实施例中,所述显示面板包括阵列基板,所述调整层300包括所阵列基板。
具体地,所述阵列基板包括衬底层、设置于所述衬底层上的控制器件层以及设置于所述控制器件层背离所述衬底层一侧的钝化层PLN,不同的调整单元组具有不同的厚度,可以理解为阵列基板中对应不同调整单元组的衬底层具有不同的厚度,也可以理解为阵列基板中对应不同调整单元组的控制器件层具有不同的厚度,或者为阵列基板中对应不同调整单元组的钝化层PLN具有不同的厚度。
可以理解的是,将阵列基板作为调整层300,通过调整阵列基板的厚度进而调整发光单元组G201中发光单元201的高度,能够有效降低显示面板的厚度,使得显示面板更加轻薄,且制作流程方便。
在一实施例中,如图5~7所示,所述阵列基板层包括衬底层(未示出)、设置于所述衬底层上的控制器件层(未示出)以及设置于所述控制器件层背离所述衬底层一侧的钝化层PLN;
在垂直所述发光层的方向上,对应不同所述调整单元组的所述衬底层和所述控制器件层的厚度均相同,对应不同所述调整单元组的所述钝化层PLN具有不同的厚度,通过对比图5、图6和图7可以看出h3>h2>h1。
具体地,所述钝化层PLN的材料可以为氮化硅。
可以理解的是,通过设置所述阵列基板最上层的钝化层PLN的厚度不同,能够防止阵列基板的控制器件层的金属走线因膜层间的高度差发生断裂,影响显示面板的正常显示,而将最上层的钝化层PLN对应调整单元组设置不同的厚度一方面能够起到隔离控制器件和发光单元201的效果,另一方面也能够解决相邻发光单元组G201之间的色度差问题。
本申请实施例还提供一种显示面板,如图9和图10所示,所述显示面板包括:
发光层,包括多个沿第一方向F1排列的发光单元组G201,所述发光单元组G201包括至少一发光单元201,多个所述发光单元组G201包括一视觉中心单元组G201C,其余多个所述发光单元组G201分别位于所述视觉中心单元组G201C的两侧;
调整层300,设置于所述发光层背光面的一侧,所述调整层300包括多个调整单元组,所述调整单元组与所述发光单元组G201相对应设置,所述调整单元组与所述发光单元201接触的一侧面为具有一倾斜角α的倾斜面M1,使所述发光单元201的出光面P1朝向所述视觉中心单元组G201C偏转,不同所述发光单元组G201对应的所述调整单元组的所述倾斜角α的度数不同。
具体地,本实施例中以显示面板为矩形显示面板为例进行说明,所述显示面板包括长边(长度方向)和短边(宽度方向);
具体地,显示面板包括一中心线CL,所述中心线CL穿过所述显示面板的中心,且与所述显示面板垂直,人眼观测处可以在所述中心线CL上,也可以不在所述中心线CL上,所述第二方向F2与所述中心线CL平行,所述第一方向F1与所述第二方向F2呈一预设夹角。
具体地,人眼观测处垂直所述显示面板对应的发光单元组G201为视觉中心单元组G201C。
具体地,所述视觉中心单元组G201C内包括多个视觉中心单元201C。
需要说明的是,用户观测处并不一定在所述显示面板经过中心线CL且垂直所述显示面板的平面上,因此根据用户的观测处设定的视觉中心单元组G201C也并不仅限定为显示面板中心处的发光单元组G201,本实施例以视觉中心单元组G201C为显示面板中心处的发光单元组G201为例进行说明。
具体地,所述显示面板包括阵列基板和设置于所述阵列基板上的发光层,所述阵列基板包括衬底层和控制器件层,所述控制器件层包括多个控制所述发光单元201发光的控制器件。
具体地,所述发光层包括多个沿第一方向F1排列的发光单元组G201,所述发光单元组G201包括至少一发光单元201,在一具体实施例中,如图3和图8所示,所述发光单元组G201可以包括多列沿显示面板长度方向排布的发光单元201,每一列发光单元201的数量相同,不同的发光单元组G201内发光单元201的列数可以相同也可以不同,不同发光单元组G201中每一列的所述发光单元201的数量相同,所述第一方向F1与所述第二方向F2的夹角可以为90°。
具体地,如图10所示,所述发光层包括:阳极层2013、设置于所述阳极层2013上的像素定义层2014,设置于所述像素定义层2014上的阴极层2011(未示出);所述像素定义层2014上设置有多个像素开口,一所述发光单元201对应一所述像素开口,所述像素开口内填充有机发光材料2012(未示出)。
具体地,所述调整层300可以包括阵列基板,也可以为单独设置于阵列基板和所述发光层之间的膜层,具体材料和结构不作限定,即能够调整所述发光单元组G201内发光单元201的倾斜角度的结构均在本申请的保护范围内。
具体地,所述发光层的所述阳极层2013与所述阵列基板上的控制器件控制连接。
具体地,所述调整层300包括多个调整单元组,所述调整单元组包括多个调整单元,所述调整单元组与所述发光单元组G201互相对应,调整单元组内的调整单元与发光单元组G201内的发光单元201互相对应。
具体地,所述发光层的阳极层2013设置于所述调整层300上,使得所述发光单元201的倾斜角度能够通过所述调整单元的倾斜角度进行调整。
具体地,如图9所示,在所述第一方向F1的正向(+F1)和反向(-F1)上,位于所述中心线CL两侧的发光单元组G201中的发光单元201的倾斜方向相反。
具体地,任意相邻两调整单元的倾斜面M1的倾斜角度数可以相同也可以不同。
可以理解的是,当调整层300设置于发光层靠近基板的一侧时,通过设置不同调整单元组具有不同倾斜角度的倾斜面M1,且倾斜方向均朝向所述视觉中心单元组G201C,调整发光单元组G201具体的倾斜角度数,可以降低所述视觉中心单元组G201C相邻的所述发光单元组G201与所述视觉中心单元组G201C之间的色度差,具体为使不同的发光单元组G201内发光单元201的出射光(为用户观察到的该发光单元201的出射光)与对应的发光单元201的法线之间的夹角相较于设置调整层300之前更小(即φ<θ)(可以对比图1和图9),换而言之,采用上述技术方案可以有效降低电致发光显示装置由于用户观看的视角差异导致的色度差,进一步提升显示面板的显示效果,提升用户体验感。
在一实施例中,任意两所述调整单元组中,其中一靠近所述视觉中心单元组G201C的所述调整单元组的所述倾斜角α的度数小于另一远离所述视觉中心单元组G201C的所述调整单元组的所述倾斜角α的度数。
具体地,所述中心线CL穿过所述视觉中心单元组G201C。
具体地,如图9所示,所述调整单元组的倾斜角度数在由所述中心线CL至所述显示面板短边的延伸方向(第一方向F1的正向(+F1)和反向(-F1))上呈逐渐递增的趋势。
可以理解的是,通过设置不同调整单元组具有不同的倾斜角度数,且在由所述中心线CL至所述显示面板短边的延伸方向(第一方向F1的正向(+F1)和反向(-F1))上呈逐级递增的变化趋势,使得显示面板中任意相邻两发光单元201之间的色度差保持平稳,提高显示面板显示的均一性。
在一实施例中,所述显示面板包括阵列基板,所述调整层300包括所阵列基板。
具体地,所述阵列基板包括衬底层、设置于所述衬底层上的控制器件层以及设置于所述控制器件层背离所述衬底层一侧的钝化层PLN,不同的调整单元组具有不同的倾斜角度数,可以理解为阵列基板中对应不同调整单元组的衬底层具有不同的倾斜角度数,也可以理解为阵列基板中对应不同调整单元组的控制器件层具有不同的倾斜角度数,或者为阵列基板中对应不同调整单元组的钝化层PLN具有不同的倾斜角度数。
可以理解的是,将阵列基板作为调整层300,通过调整阵列基板不同区域的倾斜角度进而调整发光单元组G201中发光单元201的倾斜角度,能够有效降低显示面板的厚度,使得显示面板实现降色度差的效果的同时,不用额外增添膜层,使得显示面板更加轻薄,且制作流程方便。
在一实施例中,如图10所示,所述阵列基板层包括衬底层(未示出)、设置于所述衬底层上的控制器件层(未示出)以及设置于所述控制器件层背离所述衬底层一侧的钝化层PLN;
在垂直所述发光层的方向上,对应不同所述调整单元组的所述衬底层和所述控制器件层的厚度均相同,对应不同所述调整单元组的所述钝化层PLN具有多个钝化层PLN单元组,不同所述钝化单元组朝向所述发光单元201的一侧面为倾斜面M1,且具有不同的倾斜角α。
具体地,所述钝化层PLN的材料可以为氮化硅。
可以理解的是,通过设置所述阵列基板最上层的钝化层PLN的针对不同的调整单元组具备不同的倾斜角度,能够防止阵列基板的控制器件层的金属走线因膜层间的高度差发生断裂,影响显示面板的正常显示,而将最上层的钝化层PLN对应调整单元组设置不同的倾斜角度一方面能够起到隔离控制器件和发光单元201的效果,另一方面也能够调整相邻发光单元201之间的色度差。
在一实施例中,上述种显示面板的技术方案可以叠加使用,例如,在发光层背光的一侧设置调整层300,调整层300对应的多个调整单元组具有不同厚度,同时对应的调整单元组靠近发光单元组G201的一侧面还具有倾斜面M1,使得发光层上的发光单元组G201具有不同高度的同时,对应的发光单元201的发光面朝向视觉中心单元组G201C偏转,能够使得发光层经过调整层300的调整能够克服因用户观看的视角差异导致的色度差。
本申请实施例还提供了一种显示面板,如图11所示,所述显示面板包括:
发光层,包括多个沿第一方向F1排列的发光单元组G201,所述发光单元组G201包括至少一发光单元201,多个所述发光单元组G201包括一视觉中心单元组G201C,其余多个所述发光单元组G201分别位于所述视觉中心单元组G201C的两侧;
调整层300,设置于所述发光层出光面P1的一侧,所述调整层300包括多个调整单元组,多个所述调整单元组包括一与所述视觉中心单元组G201C对应的调整中心单元组;
其中,所述调整中心单元组两侧的所述调整单元组的材料的折射率均大于所述调整中心单元组的材料的折射率。
具体地,显示面板包括一中心线CL,所述中心线CL穿过所述显示面板的中心,且与所述显示面板垂直,人眼观测处可以在所述中心线CL上,也可以不在所述中心线CL上,所述第二方向F2与所述中心线CL平行,所述第一方向F1与所述第二方向F2呈一预设夹角,所述第一方向F1与所述第二方向F2之间的夹角可以为90°。
具体地,所述发光层包括:阳极层2013、设置于所述阳极层2013上的像素定义层2014,设置于所述像素定义层2014上的阴极层2011;所述像素定义层2014上设置有多个像素开口,一所述发光单元201对应一所述像素开口,所述像素开口内填充有机发光材料2012,所述调整层300设置于所述阴极层2011上。
具体地,所述调整层300中不同调整单元组的材料均不相同,包括但是不限于氟化镁、二氧化硅、氧化铝、一氧化硅、二氧化钛、五氧化三钛、三氧化二钛、一氧化钛、氧化铪、氧化锆、氧化铌、氧化镁、氧化锌、氧化钇、氟化铝、氟化钡中的一种或多种组合。
可以理解的是,当调整层300设置于发光层背离基板的一侧时,可以设置调整单元组具有不同的折射率,通过设置以降低所述视觉中心单元组G201C相邻的所述发光单元组G201与所述视觉中心单元组G201C之间的色度差,采用上述技术方案均可以有效降低电致发光显示装置由于用户观看的视角差异导致的色度差,进一步提升显示面板的显示效果。
在一实施例中,任意两所述调整单元组中,其中一靠近所述视觉中心单元组G201C的所述调整单元组的材料的折射率小于另一远离所述视觉中心单元组G201C的所述调整单元组的材料的折射率。
具体地,所述中心线CL穿过所述视觉中心单元组G201C;
具体地,以如图11所示的实施例为例进行说明,调整层300包括由中心至显示面板短边边缘延伸设置的第四调整单元组、第三调整单元组、第二调整单元组和第一调整单元组,其中,第四调整单元组内的第四调整单元3010的材料的折射率为n4、第三调整单元组内的第三调整单元3011的材料的折射率为n3、第二调整单元组内的第二调整单元3012的材料的折射率为n2和第一调整单元组内的第一调整单元3013的材料的折射率为n1,对应的n4<n3<n2<n1。
可以理解的是,通过设置多个调整单元组的材料具有不同的折射率,且在由所述中心线CL至所述显示面板短边的延伸方向(第一方向F1的正向(+F1)和反向(-F1))上各调整单元组的材料的折射率逐渐增大,使得显示面板中任意相邻两发光单元201之间具有较小的色度差,进一步提高显示面板显示的均一性。
综上,本申请通过在发光层的一侧设置调整层300,调整层300可以设置于发光层背离基板的一侧,也可以设置于靠近基板的一侧,当调整层300设置于发光层靠近基板的一侧时,可以设置调整单元组具有不同的厚度或者设置具有倾斜面M1的调整单元组,不同调整单元组的倾斜面M1的倾斜角α不同;当调整层300设置于发光层背离基板的一侧时,可以设置调整单元组具有不同的折射率,最终效果为使设置调整层300后不同发光单元组G201内发光单元201的出射光与对应的发光单元201的法线之间的夹角相较于设置调整层300之前更小,采用上述技术方案均可以有效降低电致发光显示装置由于用户观看的视角差异导致的色度差,进一步提升显示面板的显示效果。
可以理解的是,对本领域普通技术人员来说,可以根据本申请的技术方案及其发明构思加以等同替换或改变,而所有这些改变或替换都应属于本申请所附的权利要求的保护范围。

Claims (20)

  1. 一种显示面板,其中,包括:
    发光层,包括多个沿第一方向排列的发光单元组,所述发光单元组包括至少一发光单元,多个所述发光单元组包括一视觉中心单元组,其余多个所述发光单元组分别位于所述视觉中心单元组的两侧;
    调整层,设置于所述发光层背光面的一侧,所述调整层包括多个调整单元组,所述调整单元组与所述发光单元组相对应设置;
    其中,在垂直所述发光层的方向上,多个所述调整单元组具有多个厚度,以使位于所述视觉中心单元组两侧的所述发光单元组的高度均小于所述视觉中心单元组的高度。
  2. 如权利要求1所述的显示面板,其中,任意两所述调整单元组中,其中一靠近所述视觉中心单元组的所述调整单元组的厚度大于另一远离所述视觉中心单元组的所述调整单元组的厚度。
  3. 如权利要求2所述的显示面板,其中,所述显示面板包括阵列基板,所述调整层包括所阵列基板。
  4. 如权利要求1所述的显示面板,其中,所述显示面板包括阵列基板,所述调整层包括所阵列基板。
  5. 如权利要求3所述的显示面板,其中,所述阵列基板层包括衬底层、设置于所述衬底层上的控制器件层以及设置于所述控制器件层背离所述衬底层一侧的钝化层;
    在垂直所述发光层的方向上,对应不同所述调整单元组的所述衬底层和所述控制器件层的厚度均相同,对应不同所述调整单元组的所述钝化层具有不同的厚度。
  6. 如权利要求5所述的显示面板,其中,所述钝化层的材料包括氮化硅。
  7. 如权利要求1所述的显示面板,其中,所述发光层包括:阳极层、设置于所述阳极层上的像素定义层,设置于所述像素定义层上的阴极层。
  8. 如权利要求7所述的显示面板,其中,所述像素定义层上设置有多个像素开口,一所述发光单元对应一所述像素开口,所述像素开口内填充有机发光材料。
  9. 如权利要求8所述的显示面板,其中,所述发光层的所述阳极层设置于所述调整层上。
  10. 一种显示面板,其中,包括:
    发光层,包括多个沿第一方向排列的发光单元组,所述发光单元组包括至少一发光单元,多个所述发光单元组包括一视觉中心单元组,其余多个所述发光单元组分别位于所述视觉中心单元组的两侧;
    调整层,设置于所述发光层背光面的一侧,所述调整层包括多个调整单元组,所述调整单元组与所述发光单元组相对应设置,所述调整单元组与所述发光单元组相接触的一侧面为具有一倾斜角的倾斜面,使对应的所述发光单元组内的所述发光单元的出光面偏转一预设角度;
    其中,所述视觉中心单元组两侧的所述发光单元组内的所述发光单元的发光面均朝所述视觉中心单元组倾斜。
  11. 如权利要求10所述的显示面板,其中,任意两所述调整单元组中,其中一靠近所述视觉中心单元组的所述调整单元组的所述倾斜角的度数小于另一远离所述视觉中心单元组的所述调整单元组的所述倾斜角的度数。
  12. 如权利要求10所述的显示面板,其中,所述显示面板包括阵列基板,所述调整层包括所阵列基板。
  13. 如权利要求12所述的显示面板,其中,所述阵列基板层包括衬底层、设置于所述衬底层上的控制器件层以及设置于所述控制器件层背离所述衬底层一侧的钝化层;
    在垂直所述发光层的方向上,对应不同所述调整单元组的所述衬底层和所述控制器件层的厚度均相同,对应不同所述调整单元组的所述钝化层具有多个钝化层单元组,不同所述钝化单元组朝向所述发光单元的一侧面具有不同的倾斜角。
  14. 如权利要求13所述的显示面板,其中,所述钝化层的材料包括氮化硅。
  15. 一种显示面板,其中,包括:
    发光层,包括多个沿第一方向排列的发光单元组,所述发光单元组包括至少一发光单元,多个所述发光单元组包括一视觉中心单元组,其余多个所述发光单元组分别位于所述视觉中心单元组的两侧;
    调整层,设置于所述发光层出光面的一侧,所述调整层包括多个调整单元组,多个所述调整单元组包括一与所述视觉中心单元组对应的调整中心单元组;
    其中,所述调整中心单元组两侧的所述调整单元组的材料的折射率均大于所述调整中心单元组的材料的折射率。
  16. 如权利要求15所述的显示面板,其中,所述任意两所述调整单元组中,其中一靠近所述视觉中心单元组的所述调整单元组的材料的折射率小于另一远离所述视觉中心单元组的所述调整单元组的材料的折射率。
  17. 如权利要求15所述的显示面板,其中,所述调整层中不同所述调整单元组的材料均不相同,所述调整单元组的材料包括氟化镁、二氧化硅、氧化铝、一氧化硅、二氧化钛、五氧化三钛、三氧化二钛、一氧化钛、氧化铪、氧化锆、氧化铌、氧化镁、氧化锌、氧化钇、氟化铝、氟化钡中的一种或多种组合。
  18. 如权利要求15所述的显示面板,其中,所述发光层包括:阳极层、设置于所述阳极层上的像素定义层,设置于所述像素定义层上的阴极层。
  19. 如权利要求18所述的显示面板,其中,所述像素定义层上设置有多个像素开口,一所述发光单元对应一所述像素开口,所述像素开口内填充有机发光材料,且所述阴极层覆盖所述像素开口。
  20. 如权利要求19所述的显示面板,其中,所述调整层设置于所述发光层的所述阴极层上方。
PCT/CN2022/086817 2022-03-24 2022-04-14 显示面板 WO2023178758A1 (zh)

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