Display panel and spliced panel

Abstract

The embodiment of the present application discloses a display panel and a spliced panel, which comprises a display substrate and a packaging structure layer, the display substrate comprises a driving substrate and a plurality of light emitting devices arranged on the driving substrate; the plurality of light emitting devices are arranged on the driving substrate in a spaced manner. The packaging structure layer is arranged on the plurality of light emitting devices and covers the driving substrate; one side of the packaging structure layer away from the driving substrate is a light emitting surface, and the light emitting surface at least comprises a matte surface part, and the matte surface part is arranged at least corresponding to the light emitting devices; the matte surface part is used for reducing the angle of the light emitting beam of the light emitting device. In the embodiment, the matte surface part is formed on the light emitting surface of the packaging structure layer, and is arranged at least corresponding to the light emitting devices, so as to reduce the angle of the light emitting beam of the light emitting device, and the effect of reducing the viewing angle of the display panel is achieved. When the display panel of the embodiment is spliced with other display panels with a smaller viewing angle, the risk of light lines appearing at the joint under the side view condition can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a display panel and a spliced panel. BACKGROUND

[0002] With the development of display screens, the trend is more and more towards large screens, and spliced large screens have gradually become the next display track for all parties to strive for. In the field of large screen splicing, MLCD splicing display technology is favored by various industries. The MLCD splicing display technology is to use liquid crystal (LCD) display screens as basic units and use sub-millimeter light emitting diodes or micro light emitting diodes (Mini-LED or Micro-LED) display screens for splicing at the joint.

[0003] However, the MLCD display screen has an inherent defect, which is the difference in viewing angle between the LCD display screen and the Mini-LED or Micro-LED display screen, that is, the viewing angle of the LCD display screen is smaller than that of the Mini-LED or Micro-LED display screen, which will cause a bright line to be visible at the joint when viewed from the side, affecting the viewing effect. SUMMARY

[0004] The embodiments of the present application provide a display panel and a spliced panel. The display panel with a small viewing angle can be formed by setting a frosted surface part. When spliced with other display panels with a small viewing angle, the risk of seeing a bright line at the joint in the side direction is reduced.

[0005] The embodiments of the present application provide a display panel, which comprises:

[0006] a display substrate, the display substrate comprising a driving substrate and a plurality of light emitting devices disposed on the driving substrate; the plurality of light emitting devices are spaced apart on the driving substrate; and

[0007] an encapsulation structure layer, the encapsulation structure layer being disposed on the plurality of light emitting devices and covering the driving substrate; one side of the encapsulation structure layer away from the driving substrate is an light-out surface, the light-out surface comprising at least a frosted surface part, the frosted surface part corresponding to at least being disposed between the light emitting devices, the frosted surface part being used to reduce the angle of the light beam emitted by the light emitting devices.

[0008] In some embodiments of the present application, the light-out surface further comprises a flat surface part, the flat surface part corresponding to being disposed on the light emitting devices, the surface roughness of the flat surface part being less than the surface roughness of the frosted surface part; or,

[0009] The frosted surface part further extends and covers the light emitting devices.

[0010] In some embodiments of the present application, the haze portion comprises a surface formed by a plurality of micro-protrusions.

[0011] In some embodiments of the present application, the encapsulation structure layer is a single layer of encapsulation glue, and the haze portion is formed on a side of the encapsulation glue away from the driving substrate.

[0012] In some embodiments of the present application, the light emitting device comprises a substrate, a light shielding wall, and a light emitting source, the substrate is disposed on the driving substrate, the light emitting source is disposed on the substrate, and the light shielding wall is disposed on the substrate and around the outer peripheral side of the light emitting source.

[0013] In a direction perpendicular to the plane in which the driving substrate is located, the height of the light shielding wall is greater than or equal to the height of the light emitting source; and the encapsulation glue encapsulates the light emitting device.

[0014] In some embodiments of the present application, the encapsulation structure layer comprises a first encapsulation layer disposed on the driving substrate and a second encapsulation layer disposed on the first encapsulation layer; the first encapsulation layer is disposed on the peripheral side of the light emitting device, and the second encapsulation layer is disposed on a side of the light emitting device away from the driving substrate.

[0015] The first encapsulation layer comprises black glue, the second encapsulation layer is transparent, and the haze portion is formed on a side of the second encapsulation layer away from the driving substrate.

[0016] In some embodiments of the present application, the display panel further comprises a matrix layer of metal, the matrix layer is disposed on the driving substrate, a plurality of openings are disposed on the matrix layer, and at least one light emitting device is disposed in one opening.

[0017] The first encapsulation layer is disposed on the matrix layer, and the first encapsulation layer further comprises a heat conductor doped in the black glue.

[0018] In some embodiments of the present application, the material of the heat conductor is transparent; and in a direction parallel to the plane in which the driving substrate is located, at least part of the heat conductor penetrates the first encapsulation layer.

[0019] In some embodiments of the present application, the encapsulation structure layer comprises encapsulation glue encapsulating the light emitting device and a haze film disposed on the encapsulation glue, and the haze portion is formed on a side of the haze film away from the driving substrate.

[0020] Optionally, in some embodiments of the present application, the haze of the haze portion is greater than or equal to 40%.

[0021] Correspondingly, the embodiments of the present application also provide a spliced panel, which comprises:

[0022] at least two first display panels, the first display panels being arranged to form a joint gap;

[0023] at least one second display panel, arranged on the first display panel and shielding the joint gap;

[0024] The second display panel is the display panel of any one of the above embodiments, and the viewing angle of the display substrate is greater than the viewing angle of the first display panel.

[0025] The display panel of the embodiment includes a display substrate and an encapsulation structure layer. The display substrate includes a driving substrate and a plurality of light emitting devices arranged on the driving substrate. The plurality of light emitting devices are arranged on the driving substrate at intervals. The encapsulation structure layer is arranged on the plurality of light emitting devices and covers the driving substrate. One side of the encapsulation structure layer away from the driving substrate is a light exit surface. The light exit surface includes at least a matte surface portion. The matte surface portion corresponds to at least the space between the light emitting devices. The matte surface portion is used to reduce the angle of the light beam emitted by the light emitting devices.

[0026] The embodiment forms a matte surface portion on the light exit surface of the encapsulation structure layer and corresponds to at least the space between the light emitting devices to reduce the angle of the light beam emitted by the light emitting devices, thereby achieving the effect of reducing the viewing angle of the display panel. When the display panel of the embodiment is spliced with other display panels with a smaller viewing angle, the risk of a bright line appearing at the joint gap in the side view can be reduced. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0028] Figure 1 is a cross-sectional structure schematic diagram of the display panel provided by the first embodiment of the present application;

[0029] Figure 2 is a top view structure schematic diagram of the display panel provided by the first embodiment of the present application;

[0030] Figure 3 is a structure schematic diagram of the display panel provided by the second embodiment of the present application;

[0031] Figure 4 is a structure schematic diagram of the display panel provided by the third embodiment of the present application;

[0032] Figure 5 is a structure schematic diagram of the display panel provided by the fourth embodiment of the present application;

[0033] Figure 6 FIG. 7 is a top view of a display panel according to an embodiment of the present application;

[0034] Figure 7 FIG. 8 is a structure diagram of a display panel according to an embodiment of the present application;

[0035] Figure 8 FIG. 9 is a structure diagram of a display panel according to an embodiment of the present application. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application. In addition, it should be understood that the specific implementations described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, the orientation words such as "upper" and "lower" generally refer to the upper and lower of the device in the actual use or working state, and specifically refer to the direction of the drawing surface in the drawings; and "inner" and "outer" refer to the contour of the device.

[0037] The present application provides a display panel and a spliced panel, which will be described in detail below. It should be noted that the description order of the following embodiments is not limited as the preferred order of the embodiments.

[0038] Embodiment one,

[0039] Please refer to Figure 1 The present application provides a display panel 100, which includes a display substrate 10 and an encapsulation structure layer 20. The display substrate 10 includes a driving substrate 11 and a plurality of light emitting devices 12 disposed on the driving substrate 11. The plurality of light emitting devices 12 are disposed on the driving substrate 11 with intervals. The encapsulation structure layer 20 is disposed on the plurality of light emitting devices 12 and covers the driving substrate 11. The side of the encapsulation structure layer 20 away from the driving substrate 11 is a light exit surface cg. The light exit surface cg includes at least a haze surface portion cg1, which corresponds to at least the space between the light emitting devices 12. The haze surface portion cg1 is used to reduce the angle of the light beam emitted by the light emitting devices 12.

[0040] The embodiment forms a matte portion cg1 on the light-out surface cg of the packaging structure layer 20, and is arranged at least between the light-emitting devices 12 to reduce the angle of the light beams emitted by the light-emitting devices 12, thereby achieving the effect of reducing the viewing angle of the display panel 100. When the display panel 100 of the embodiment is spliced with other display panels with a smaller viewing angle, the risk of bright lines appearing at the splicing seam in the side view can be reduced.

[0041] It should be noted that, since the light-emitting angle of the light-emitting device 12 is large, the matte portion cg1 arranged between the light-emitting devices 12 can converge the light beams with a large angle, thereby achieving the effect of reducing the light beams emitted by the light-emitting device 12. At the same time, the matte portion cg1 as at least a part of the light-out surface cg also has the effect of reducing the reflectivity of external light, thereby playing a role in anti-glare.

[0042] Optionally, the light-emitting device 12 can be a Mini-LED (Mini Light-Emitting Diode) or a Micro-LED (Micro Light-Emitting Diode), etc.

[0043] The driving substrate 11 includes a substrate and a thin film transistor layer arranged on the substrate in sequence, and the thin film transistor layer includes a thin film transistor, a capacitor, a scan line, a data line, a common line, a power line, etc. The driving substrate 11 is used to drive the light-emitting device 12 to emit light.

[0044] Optionally, in the embodiment, the packaging structure layer 20 is a single-layer packaging glue 20a, and the matte portion cg1 is formed on the side of the packaging glue 20a away from the driving substrate 11.

[0045] Optionally, the packaging glue 20a is used to package the light-emitting device 12, and then a grinding treatment is performed on the side of the packaging glue 20a away from the driving substrate 11, so that a plurality of micro-protrusions 2a are formed on the side of the packaging glue 20a away from the driving substrate 11, thereby forming the matte portion cg1. Of course, a wet etching process can also be used to form a plurality of micro-protrusions 2a on the side of the packaging glue 20a away from the driving substrate 11. The micro-protrusions 2a have a light-converging effect and are used to converge most of the light beams emitted by the light-emitting device 12.

[0046] Therefore, the matte portion cg1 includes a surface formed by the plurality of micro-protrusions 2a. Optionally, the shape of the micro-protrusions 2a is not limited, and can be, for example, hemispherical, conical, rod-shaped, trapezoidal, or other shapes, etc.

[0047] Optionally, the material of the packaging glue 20a can be transparent epoxy (such as epoxy resin) or silicon resin (transparent silicon resin).

[0048] In the embodiment, the haze surface part cg1 also extends to cover the light emitting device 12. That is, the light emitting surface cg is a haze surface structure. By taking the entire light emitting surface cg as a haze surface, the exit angle of the light beam emitted by the light emitting device 12 can be further reduced, and the external light reflectivity can be further reduced.

[0049] Optionally, the haze of the haze surface part cg1 is greater than or equal to 40%, such as 40%, 45%, 50%, 55%, or 60%. When the haze of the haze surface part cg1 is 50%-60%, the viewing angle of the display panel of the embodiment compared with the viewing angle of the Mini-LED display panel using the flat surface encapsulation adhesive is as follows.

[0050]

[0051] According to the above table, by only changing the shape of the light emitting surface cg of the encapsulation adhesive 20a, compared with the flat encapsulation adhesive, the haze encapsulation adhesive 20a makes the display panel 100 have a narrower viewing angle effect.

[0052] It should be noted that the flat surface is a smooth surface in the definition of surface roughness, and the surface roughness of the flat surface is smaller than that of the haze surface, such as 0.005 microns, which can also be less than 0.005 microns. The surface roughness of the haze surface is 0.012 microns, which can also be greater than 0.012 microns. The haze surface can be obtained by grinding the flat surface.

[0053] Please refer to Figure 2 In the embodiment, the display panel 100 further includes a black matrix 30 disposed on the driving substrate 11, and a plurality of openings 31 are formed in the black matrix 30. The light emitting device 12 is correspondingly disposed in the opening 31.

[0054] The thickness of the black matrix 30 is smaller than the thickness of the light emitting device 12. The black matrix 30 has the effect of increasing the contrast of the display panel 100.

[0055] Embodiment II,

[0056] Please refer to Figure 3 Compared with Embodiment I, the difference between the display panel 100 of the embodiment is that the light emitting surface cg further includes a flat surface part cg2, and the flat surface part cg2 is correspondingly disposed on the light emitting device 12. The surface roughness of the flat surface part cg2 is smaller than the surface roughness of the haze surface part cg1.

[0057] That is, the haze surface part cg1 is disposed in overlap with the black matrix 30, and the haze surface part cg1 is correspondingly arranged around the periphery of the light emitting device 12; the flat surface part cg2 is disposed in overlap with the light emitting device 12.

[0058] The flat surface part cg2 of the embodiment corresponds to the light emitting device 12, so as to improve the display clarity of the display panel 100 and reduce the risk of over-brightness of the display panel 100 at a small viewing angle.

[0059] Optionally, the small viewing angle can be 0°, 15°, 30°, 45° or 60°, etc.

[0060] Embodiment three,

[0061] Please refer to Figure 4 Compared with the first embodiment or the second embodiment, the display panel 100 of the embodiment is different in that the light emitting device 12 includes a substrate 121, a light shielding wall 122 and a light emitting source 123. The substrate 121 is arranged on the driving substrate 11. The light emitting source 123 is arranged on the substrate 121. The light shielding wall 122 is arranged on the substrate 121 and around the outer peripheral side of the light emitting source 123.

[0062] In the direction Z perpendicular to the plane where the driving substrate 11 is located, the height of the light shielding wall 122 is greater than or equal to the height of the light emitting source 123. The encapsulating glue 20a encapsulates the light emitting device 12.

[0063] The embodiment uses the modular light emitting device 12 and uses the light shielding wall 122 to shield the large-angle light beam emitted by the light emitting source 123, so as to further achieve the effect of reducing the viewing angle of the display panel 100. In addition, the use of the modular light emitting device 12 improves the process effect.

[0064] It should be noted that the coordinate system XYZ is set, and the plane where the driving substrate 11 is located is defined as the plane where the X-axis and the Y-axis are located, and the Z-axis is perpendicular to the plane XY.

[0065] In addition, the substrate 121 of the light emitting device 12 away from the light emitting source 123 is also provided with a binding pad, and the light emitting device 12 is connected with the conductive pad on the driving substrate 11 through the binding pad.

[0066] Optionally, one light emitting source 123 can be arranged on the substrate 121, or a plurality of light emitting sources 123 can be arranged.

[0067] The light emitting source 123 can be a mini light emitting diode (Mini-LED) or a micro light emitting diode (Micro-LED), etc.

[0068] Embodiment four,

[0069] Please refer to Figure 5Compared with the first or second embodiment, the display panel 100 of the present embodiment is different in that the encapsulation structure layer 20 comprises a first encapsulation layer 21 disposed on the driving substrate 11 and a second encapsulation layer 22 disposed on the first encapsulation layer 21. The first encapsulation layer 21 is disposed on the side of the light emitting device 12 away from the driving substrate 11. The second encapsulation layer 22 is disposed on the side of the light emitting device 12 away from the driving substrate 11.

[0070] The first encapsulation layer 21 comprises a black gel 211. The second encapsulation layer 22 is transparent. A matte portion cg1 is formed on the side of the second encapsulation layer 22 away from the driving substrate 11.

[0071] The present embodiment adopts the black first encapsulation layer 21 to surround the side of the light emitting device 12, which absorbs the large-angle light beams emitted by the light emitting device 12, thereby reducing the viewing angle of the display panel 100.

[0072] The micro-protrusion 2a is formed on the second encapsulation layer 22.

[0073] Optionally, please refer to Figure 6 The display panel 100 can further comprise a metal matrix layer jz disposed on the driving substrate 11. The matrix layer jz is provided with a plurality of openings 31, and at least one light emitting device 12 is disposed in one opening 31.

[0074] The first encapsulation layer 21 is disposed on the matrix layer jz. The first encapsulation layer 21 further comprises a heat conductor 212 doped in the black gel 211.

[0075] The metal matrix layer jz plays a role in heat dissipation; the heat conductor 212 doped in the black gel 211 guides the heat to the matrix layer jz, thereby accelerating the heat dissipation efficiency.

[0076] Optionally, the material of the heat conductor 212 is transparent. At least part of the heat conductor 212 penetrates the first encapsulation layer 21 in the direction parallel to the plane XY where the driving substrate 11 is located.

[0077] The adoption of the partially transparent heat conductor 212 penetrating the first encapsulation layer 21 makes part of the large-angle light beams emitted by the light emitting device 12 pass through the heat conductor 212, thereby avoiding the display panel 100 being too dark when viewed from the side.

[0078] Optionally, the material of the heat conductor 212 can comprise graphene, carbon nanotube or silver, etc.

[0079] In some embodiments, the matrix layer jz can also be saved on the basis of the present embodiment.

[0080] Embodiment five,

[0081] Please refer to Figure 7Compared with the first or second embodiment, the display panel 100 of the present embodiment is different in that the encapsulation structure layer 20 comprises an encapsulation glue 20a encapsulating the light emitting device 12 and a haze film 20b disposed on the encapsulation glue 20a. The haze surface part cg1 is formed on the side of the haze film 20b away from the driving substrate 11.

[0082] Optionally, the encapsulation glue 20a is also provided with a groove 2a1 surrounding the periphery of the light emitting device 12. That is, the groove 2a1 is in a grid shape, and the light emitting device 12 is located in the grid.

[0083] The encapsulation structure layer 20 further comprises a polymer dispersed liquid crystal 20c disposed in the groove 2a1 and on the black matrix 30. The black matrix 30 serves as a driving electrode. When the black matrix 30 is powered, the polymer dispersed liquid crystal 20c deflects, so that the large-angle light beam emitted by the light emitting device 12 is blocked.

[0084] The black matrix 30 comprises a first electrode 30a and a second electrode 30b. When powered, the first electrode 30a and the second electrode 30b are respectively powered with different voltages to form an electric field to drive the deflection of the liquid crystal molecules in the polymer dispersed liquid crystal 20c, thereby achieving the side-view light shielding effect.

[0085] Embodiment six

[0086] Correspondingly, please refer to Figure 8 The present embodiment also provides a spliced panel 1000 comprising at least two first display panels p1 and at least one second display panel p2.

[0087] The first display panel p1 is spliced to form a splicing seam fx. The second display panel p2 is disposed on the first display panel p1 and shields the splicing seam fx.

[0088] The second display panel p2 is the display panel 100 of any one of the above embodiments. The viewing angle of the display substrate 10 is greater than that of the first display panel p1.

[0089] Optionally, the first display panel p1 can be a liquid crystal display panel, an organic light emitting display panel, or a diode light emitting display panel, etc.

[0090] Hereinafter, the second display panel p2 is taken as the display panel 100 of the first embodiment for illustration.

[0091] The second display panel p2 of the spliced panel 1000 provided by the embodiment of the present application comprises a display substrate 10 and an encapsulation structure layer 20. The display substrate 10 comprises a driving substrate 11 and a plurality of light emitting devices 12 arranged on the driving substrate 11. The plurality of light emitting devices 12 are arranged on the driving substrate 11 at intervals. The encapsulation structure layer 20 is arranged on the plurality of light emitting devices 12 and covers the driving substrate 11. The side of the encapsulation structure layer 20 away from the driving substrate 11 is a light exit surface cg. The light exit surface cg comprises at least a matte surface portion cg1, and the matte surface portion cg1 corresponds to at least the space between the light emitting devices 12. The matte surface portion cg1 is used to reduce the angle of the light beam emitted by the light emitting device 12.

[0092] The embodiment forms the matte surface portion cg1 on the light exit surface cg of the encapsulation structure layer 20 and corresponds to at least the space between the light emitting devices 12, so as to reduce the angle of the light beam emitted by the light emitting device 12, thereby achieving the effect of reducing the viewing angle of the display panel 100. When the display panel 100 adopting the embodiment is spliced with other display panels with a smaller viewing angle, the risk of light lines appearing at the splicing seam in the side view can be reduced.

[0093] It should be noted that, since the light emitting angle of the light emitting device 12 is large, the matte surface portion cg1 arranged between the light emitting devices 12 can converge the light beam with a large angle, thereby achieving the effect of reducing the light beam emitted by the light emitting device 12. At the same time, the matte surface portion cg1 as at least a part of the light exit surface cg also has the effect of reducing the reflectivity of external light and plays a role in anti-glare.

[0094] The display panel and the spliced panel provided by the embodiment of the present application are described in detail above, and the principle and implementation mode of the present application are described by applying specific examples in this paper. The above description of the embodiments is only used to help understand the method of the present application and its core idea; at the same time, for those skilled in the art, according to the idea of the present application, the specific implementation mode and application range will be changed, and the above description should not be understood as limiting the present application.

Claims

1. A display panel, characterized by, The display panel comprises: a display substrate comprising a driving substrate and a plurality of light emitting devices arranged on the driving substrate; the plurality of light emitting devices are arranged on the driving substrate at intervals; and a packaging structure layer arranged on the plurality of light emitting devices and covering the driving substrate; an out-lighting surface of the packaging structure layer away from the driving substrate comprises at least a matte surface portion corresponding to at least the space between the light emitting devices, the matte surface portion being used to reduce the angle of the light beams emitted by the light emitting devices; the packaging structure layer comprises a first packaging layer arranged on the driving substrate and a second packaging layer arranged on the first packaging layer; the first packaging layer is arranged on the side of the light emitting devices, and the second packaging layer is arranged on the side of the light emitting devices away from the driving substrate; the first packaging layer comprises a black gel, the second packaging layer is transparent, the matte surface portion is formed on the side of the second packaging layer away from the driving substrate, and the first packaging layer further comprises a heat conductor doped in the black gel, the material of the heat conductor being transparent; at least part of the heat conductor penetrates the first packaging layer in a direction parallel to the plane of the driving substrate.

2. The display panel of claim 1, wherein, The out-lighting surface further comprises a flat surface portion corresponding to the light emitting devices, and the surface roughness of the flat surface portion is smaller than that of the matte surface portion; or the matte surface portion further extends and covers the light emitting devices.

3. The display panel of claim 1, wherein, The matte surface portion comprises a surface formed by a plurality of micro-protrusions.

4. The display panel of claim 1, wherein, The display panel further comprises a metal matrix layer arranged on the driving substrate, the matrix layer is provided with a plurality of openings, and at least one light emitting device is arranged in one opening; the first packaging layer is arranged on the matrix layer.

5. A tiled panel, characterized in that, The display panel comprises: at least two first display panels arranged in a spliced manner to form a spliced seam; at least one second display panel arranged on the first display panel and shielding the spliced seam; wherein the second display panel is the display panel of any one of claims 1-4, and the viewing angle of the display substrate is greater than that of the first display panel.

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