Display panel and display device

Abstract

The display panel comprises a plurality of prisms, the prisms are arranged on the side, away from a driving backboard, of a color film layer, each prism comprises a binding face and a refracting face, and the included angles between the refracting faces and the binding faces of the different prisms are gradually decreased in the adduction direction, so that the principal ray angle of the display panel is gradually decreased in the adduction direction. And the observation angle of the eyeball is gradually reduced along the adduction direction, so that the chief light angle adjusted by the refraction layer can be matched with the observation angles at different positions, the intensity of light entering the eyeball is ensured to be maximum all the time, and the uniformity of a display picture is improved while the brightness of the display picture is ensured. When the light filtering unit is applied to the display device, a reflecting mirror group does not need to be independently arranged to inwards receive light rays penetrating out of the light filtering unit, and the weight of the display device can be reduced. The utility model further provides a display device comprising the display panel.

Description

Technical Field

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

[0002] Organic Light Emitting Diode (OLED) display panels have the characteristics of thin thickness, light weight, wide screen viewing angle and fast response speed, and are therefore widely used in various fields.

[0003] When the chief ray angle is 0°, there is a large gap between the viewing angle of the eyeball at the edge of the display panel and the chief ray angle, and the light intensity entering the eyeball is weak, resulting in poor brightness of the observed display screen. When applied to a display device, a separate reflector group needs to be set to draw the light inward, and the display device is heavy.

[0004] It should be noted that the information of the utility model in the above background technology section is only used to enhance the understanding of the background of the utility model, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0005] The utility model aims to overcome the problem that when there is a large gap between the observation angle of the eyeball at the edge of the display panel and the main light angle, the brightness uniformity of the observed display picture is poor, and provides a display panel and a display device.

[0006] According to one aspect of the utility model, a display panel is provided, which includes a driving backplane, a light-emitting layer, a color filter layer and a plurality of prisms, the light-emitting layer includes a plurality of light-emitting devices, and the plurality of light-emitting devices are spaced apart on one side of the driving backplane; the color filter layer is arranged on a side of the light-emitting layer away from the driving backplane, the color filter layer includes at least three filter units of different colors, the orthographic projections of the filter units on the driving backplane overlap with the orthographic projections of the corresponding light-emitting devices on the driving backplane; the plurality of prisms are arranged on a side of the color filter layer away from the driving backplane, the orthographic projections of the prisms on the driving backplane overlap with the orthographic projections of the corresponding light-emitting devices on the driving backplane; the prisms include a fitting surface and a refractive surface, the fitting surface is parallel to the surface of the driving backplane, the refractive surface is inclined relative to the fitting surface, the emergent light of the light-emitting device converges toward the center of the display panel along an inward direction after passing through the refractive surface, and along the inward direction, the angles between the refractive surfaces and the fitting surfaces of different prisms gradually decrease, and the inward direction is the direction from the edge of the display panel to the center of the display panel.

[0007] In one embodiment of the present invention, the center of the filter unit is offset in an inward direction relative to the center of the corresponding light emitting device.

[0008] In one embodiment of the present invention, the center of the prism is offset inwardly relative to the center of the corresponding light emitting device, and the offset of the prism relative to the light emitting device is equal to the offset of the filter unit relative to the light emitting device.

[0009] In one embodiment of the utility model, adjacent filtering units overlap with each other to form an overlapping portion, the refractive surface is inclined in an inward direction relative to the fitting surface, the orthographic projection of one end of the refractive surface of the prism close to the fitting surface on the driving back plate overlaps with the orthographic projection of the overlapping portion on the driving back plate, and the orthographic projection of one end of the refractive surface of the prism close to the fitting surface on the driving back plate does not overlap with the orthographic projection of the overlapping portion on the driving back plate.

[0010] In one embodiment of the utility model, the retraction direction includes a first retraction direction and a second retraction direction, the second retraction direction is perpendicular to the first retraction direction, the offset distance between two adjacent prisms in the first retraction direction is a first offset distance, the offset distance between two adjacent prisms in the second retraction direction is a second offset distance, and the first offset distance is equal to the second offset distance.

[0011] In one embodiment of the utility model, the inward direction also includes a third inward direction, and is located on the midline of the first inward direction and the second inward direction along the circumferential direction. The offset distance between two adjacent prisms in the third inward direction is a third offset distance, and the third offset distance is equal to the first offset distance and the second offset distance.

[0012] In one embodiment of the utility model, the retraction direction also includes a third retraction direction, which is located on the midline of the first retraction direction and the second retraction direction along the circumferential direction, and the offset distance between two adjacent prisms in the third retraction direction is the third offset distance, and the third offset distance is greater than the first offset distance and the second offset distance, and the offset component of the third offset distance in the first retraction direction is equal to the offset component in the second retraction direction.

[0013] In one embodiment of the utility model, the retraction direction includes a first retraction direction and a second retraction direction, the second retraction direction is perpendicular to the first retraction direction, the offset distance between two adjacent prisms in the first retraction direction is a first offset distance, the offset distance between two adjacent prisms in the second retraction direction is a second offset distance, and the first offset distance is smaller than the second offset distance.

[0014] In one embodiment of the present invention, the distance between a side of the light-emitting layer away from the driving backplane and a side of the prism close to the driving backplane is H, and the offset of the prism relative to the light-emitting device is D, where D≤2 / 3H.

[0015] According to yet another aspect of the present invention, a display device is provided, comprising the display panel provided by one aspect of the present invention.

[0016] The display panel of the utility model includes a plurality of prisms, and the plurality of prisms are arranged on the side of the color film layer away from the driving back plate. The prisms include a fitting surface and a refractive surface. Along the inward direction, the angle between the refractive surface and the fitting surface of different prisms gradually decreases, so that the main light angle of the display panel gradually decreases along the inward direction, and the viewing angle of the eyeball also gradually decreases along the inward direction. Therefore, the main light angle adjusted by the refractive layer can match the viewing angles of different positions to ensure that the intensity of the light entering the eyeball is always the maximum, and the brightness of the display image is ensured while improving the uniformity of the display image. When applied to a display device, there is no need to separately set a reflector group to inwardly collect the light passing through the filter unit, which can reduce the weight of the display device.

[0017] It should be understood that the above general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present utility model, and together with the specification, are used to explain the principles of the present utility model. Obviously, the drawings described below are only some embodiments of the present utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a cross-sectional schematic diagram of the driving backplane and the light-emitting layer involved in the embodiment of the utility model.

[0020] Figure 2 It is a cross-sectional schematic diagram of a display panel involved in an embodiment of the present utility model.

[0021] Figure 3 It is a cross-sectional schematic diagram of a partial structure of a display panel involved in an embodiment of the present utility model when the filter unit and the micro lens are offset relative to the light-emitting unit along the outward expansion direction.

[0022] Figure 4 It is a schematic diagram of a partial structure of a display panel involved in an embodiment of the present utility model when the center of a micro lens is offset in an inward direction relative to the center of a corresponding light emitting device.

[0023] Figure 5 It is a schematic diagram of a partial structure of a display panel involved in an embodiment of the utility model when a refractive layer is arranged on a side of the color filter layer away from the driving backplane.

[0024] Figure 6 It is a plan view schematically showing a distribution pattern of a plurality of prisms arranged to form a ring array according to an embodiment of the present utility model.

[0025] Figure 7It is a plan view schematically showing a distribution pattern of a plurality of prisms arranged to form a square array according to an embodiment of the present utility model.

[0026] Figure 8 It is a plan view schematically showing a distribution pattern of a plurality of prisms arranged to form an elliptical array according to an embodiment of the present utility model.

[0027] In the figure: 1-driving backplane, 10-substrate, 11-transistor, 111-gate, 112-active layer, 113-first pole, 114-second pole, 115-gate insulating layer, 12-first transistor, 13-second transistor, 14-contact hole, 15-insulating layer, 16-third conductive layer, 100-driving circuit layer, 2-light-emitting layer, 21-first conductive layer, 22-light-emitting unit layer, 23-second conductive layer, 220-light-emitting device , 2201-first light-emitting device, 2202-second light-emitting device, 2203-third light-emitting device, 221-pixel electrode, 222-common electrode, 223-light-emitting unit, 3-thin film encapsulation layer group, 31-first thin film encapsulation layer, 32-second thin film encapsulation layer, 4-color film layer, 41-filter unit, 5-microlens layer, 51-microlens, 6-cover plate, 7-refractive layer, 71-prism, 101-central area, 102-edge area. DETAILED DESCRIPTION

[0028] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted. In addition, the drawings are only schematic illustrations of the present invention and are not necessarily drawn to scale.

[0029] Although relative terms such as "upper" and "lower" are used in this specification to describe the relative relationship of one component of the diagram to another component, these terms are used in this specification only for convenience, such as according to the direction of the examples in the drawings. It is understood that if the device of the diagram is turned upside down, the component described as "upper" will become the component "lower". When a structure is "on" other structures, it may mean that the structure is formed integrally on the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure through another structure.

[0030] The terms "a", "an", "the", "said" and "at least one" are used to indicate the presence of one or more elements / components / etc.; the terms "including" and "having" are used to express an open-ended inclusive meaning and mean that additional elements / components / etc. may exist in addition to the listed elements / components / etc.; the terms "first", "second" and "third" etc. are used merely as labels and are not intended to limit the quantity of their objects.

[0031] like Figure 1 As shown, micro-organic light-emitting diode (micro-OLED) display panels have the advantages of small size, light weight, high contrast, fast response speed and low power consumption, and are easier to achieve higher pixel density. Therefore, they are widely used in augmented reality (AR) display devices and virtual reality (VR) display devices.

[0032] like Figure 1 As shown, the display panel provided by the embodiment of the utility model adopts a silicon substrate as the base substrate 10, and the driving circuit layer 100 can be integrated on the silicon substrate to form a driving backplane 1. In this case, the silicon-based circuit can achieve higher precision. The first light-emitting element and the second light-emitting element of the light-emitting layer 2 are formed on the driving backplane 1, and the driving backplane 1 includes a base substrate 10 and a driving circuit layer 100 formed on the base substrate 10. The silicon substrate is, for example, single crystal silicon or high-purity silicon.

[0033] The driving circuit layer 100 is formed on the substrate 10 by a semiconductor process. For example, an active layer 112 (i.e., a semiconductor layer), a first electrode 113, and a second electrode 114 of the transistor 11 are formed in the substrate 10 by a doping process, and an insulating layer 15 is formed by a silicon oxidation process, and a plurality of third conductive layers 16 are formed by a sputtering process. The semiconductor layer (i.e., Figure 1 The active layer 112 in the substrate 10 is located inside the substrate 10 or is a part of the substrate 10.

[0034] like Figure 1 As shown, the first light emitting element is electrically connected to the first transistor 12, and the second light emitting element is electrically connected to the second transistor 13. The embodiment of the utility model does not limit the specific types of the first transistor 12 and the second transistor 13. The first transistor 12 is exemplarily described below, which is also applicable to the second transistor 13, and thus will not be repeated.

[0035] The pixel electrode 221 of the first light emitting element is formed on the surface of the driving backplane 1 and is electrically connected to the first electrode 113 of the first transistor 12 through the contact hole 14 filled with a conductive material (such as tungsten) and the plurality of conductive layers. Figure 1One insulating layer 15 and two third conductive layers 16 are exemplarily shown in the figure, but the embodiment of the utility model does not limit the number of insulating layers 15 and conductive layers.

[0036] For example, the first transistor 12 includes a gate 111, a gate insulating layer 115, an active layer 112, a first pole 113, and a second pole 114. The embodiment of the utility model does not limit the type, material, and structure of the first transistor 12. For example, it can be a top gate type, a bottom gate type, etc. The active layer 112 of the first transistor 12 can be an inorganic semiconductor material such as microcrystalline silicon, amorphous silicon, polycrystalline silicon (low temperature polycrystalline silicon or high temperature polycrystalline silicon), an oxide semiconductor (such as IGZO), or an organic material, such as PBTTT, PDBT-co-TT, PDQT, PDVT-10, dinaphtho-dithiophene (DNTT) or pentacene. For example, the first transistor 12 can be N-type or P-type.

[0037] Some embodiments of the present invention are described by taking a field effect transistor 11 (such as a MOS field effect transistor 11) formed in a silicon substrate as an example. In this example, the silicon substrate is doped (p-type doping or n-type doping) to form an active layer 112 of the transistor 11, that is, the active layer 112 of the transistor 11 is located in the silicon substrate, or the active layer 112 of the transistor 11 is a part of the silicon substrate. The source and drain of the transistor 11 used here can be symmetrical in structure, so the source and drain can be indistinguishable in structure. In an embodiment of the present invention, in order to distinguish the two poles of the transistor 11 except the gate 111, for example, one of the poles can be directly described as the first pole 113 and the other pole as the second pole 114.

[0038] The topmost conductive layer in the driving backplane 1 can be reflective, for example, a stacked structure of titanium / titanium nitride / aluminum. For example, the conductive layer includes a plurality of sub-layers arranged at intervals, which are respectively arranged in one-to-one correspondence with the plurality of pixel electrodes 221 included in the first conductive layer 21. In the top emission structure, the conductive layer can be set as a reflective layer to reflect the light emitted by the light-emitting element to improve the light extraction efficiency. For example, the orthographic projection of each electrode in the first conductive layer 21 on the base substrate 10 falls within the orthographic projection of the portion of the conductive layer corresponding to the electrode on the base substrate 10. In this case, the first conductive layer 21 can adopt a transparent conductive oxide material with a high work function, such as ITO, IZO, IGZO, AZO, etc.

[0039] The light-emitting device 220 includes a first light-emitting device 2201 and a second light-emitting device 2202 respectively located in a first sub-pixel region and a second sub-pixel region. The first light-emitting device 2201 and the second light-emitting device 2202 both include a light-emitting unit 223, and a pixel electrode 221 and a common electrode 222 facing the light-emitting unit 223. For example, the first light-emitting device 2201 and the second light-emitting device 2202 may be an organic light-emitting diode (OLED) or a quantum dot light-emitting diode (QLED), etc., and the embodiment of the utility model does not limit the type of light-emitting element. For example, the light-emitting unit 223 may be a small molecule organic material or a polymer organic material.

[0040] For example, the first light-emitting device 2201 and the second light-emitting device 2202 are top emission structures, and the pixel electrode 221 and the common electrode 222 are reflective. For example, the pixel electrode 221 includes a material with high work function and high reflectivity to act as an anode, such as a stacked structure of Ti / Al / Ti / Mo, wherein metal titanium can be used as a buffer layer to improve the adhesion between layers, Al is used as a highly reflective material, and Mo is used as a high work function material to directly contact the organic functional layer to improve the injection capacity of carriers. Correspondingly, the second conductive layer 23 acts as a cathode, for example, the second conductive layer 23 can be a transparent conductive material or a stacked structure of a transparent conductive material and a metal material. For example, the second conductive layer 23 can be a transparent metal oxide conductive material, such as indium zinc oxide (IZO), indium tin oxide (ITO), indium gallium zinc oxide (IGZO), etc., and can also be transparent nano-conductive materials such as carbon nanotubes, graphene, and nano silver wires.

[0041] It should be noted that the transistors 11 used in the embodiments of the present invention may be thin film transistors 11, field effect transistors 11 or other switching devices with the same characteristics. When the transistor 11 is a thin film transistor 11, the driving circuit layer 100 may include a plurality of driving circuit units, any one of which may include the transistor 11 and a storage capacitor, and the plurality of driving circuit units constitute the driving circuit layer 100.

[0042] like Figure 2 As shown, since the material of the light-emitting unit 223 and the material of the common electrode 222 are sensitive to water and oxygen and are easily oxidized by water and oxygen, a thin film encapsulation layer group 3 (Thin Film Encapsulation, TFE) is provided on the side of the common electrode 222 away from the driving backplane 1. The thin film encapsulation layer group 3 isolates the light-emitting device 220 of the light-emitting layer 2 from water and oxygen, thereby protecting the light-emitting device 220.

[0043] A color filter layer 4 is provided on the side of the thin film encapsulation layer group 3 away from the driving backplane 1. The color filter layer 4 includes three filter units 41 of different colors, namely a red filter unit 41, a green filter unit 41 and a blue filter unit 41. The orthographic projection of the filter unit 41 on the driving backplane 1 overlaps with the orthographic projection of the corresponding light-emitting device 220 on the driving backplane 1. The light-emitting device 220 can be set to a white light-emitting device 220. The red filter unit 41, the green filter unit 41 and the blue filter unit 41 can respectively achieve the passage of red light, green light and blue light by absorbing light of specific wavelengths.

[0044] In order to enhance the brightness of the display, a plurality of microlenses 51 are provided on the side of the thin film encapsulation layer group 34 away from the driving backplane 1 to converge the light passing through the filter unit 41. The orthographic projection of the microlens 51 on the driving backplane 1 overlaps with the orthographic projection of the corresponding light emitting device 220 on the driving backplane 1. The microlens 51 can converge the light passing through the filter unit 41, thereby enhancing the brightness of the display panel at a positive viewing angle. In order to protect the microlens layer 5, a cover plate 6 can be formed on the side away from the microlens layer 5 and away from the base substrate 10.

[0045] like Figure 3 As shown, the thin film encapsulation layer group 3 may include a first thin film encapsulation layer 31 and a second thin film encapsulation layer 32. The first thin film encapsulation layer 31 (Thin Film Encapsulation, TFE) may be provided on the side of the common electrode 222 away from the driving backplane 1. The first thin film encapsulation layer 31 isolates the light emitting device 220 of the light emitting layer 2 from water and oxygen, thereby protecting the light emitting device 220. In order to protect the color filter layer 4, the second thin film encapsulation layer 32 may be formed on the side of the color filter layer 4 away from the base substrate 10.

[0046] When the chief ray angle is 0°, there is a large gap between the chief ray angle of the edge of the display panel and the observation angle of the eyeball, and the light intensity entering the eyeball is weak, resulting in poor brightness uniformity of the observed display screen. By offsetting the filter unit 41 and the microlens 51 relative to the pixel electrode 221, the chief ray angle can be changed. By controlling the offset distance of the filter unit 41 and the microlens 51 in different areas, the chief ray angle can be matched with the observation angle, so that the brightness of the area of ​​the display panel seen at the observation angle is always kept at the maximum.

[0047] like Figure 3 As shown, currently, by offsetting the filter unit 41 and the microlens 51 relative to the light emitting unit 223 along the outward expansion direction x, outward expansion angle customization can be achieved, and the outward expansion direction x is the direction from the center of the display panel to the edge of the display panel. The angle of the main ray increases from the center line of the display panel to the edge of the display panel, resulting in a large loss of brightness at the edge of the display panel under normal viewing angles and a color cast problem. When the display panel is applied to a display device, an additional reflector group is required to reflect the outward expansion light at the edge of the display panel into an acceptable angle range, resulting in a relatively heavier weight of the display device.

[0048] Based on this, the present invention provides a display panel. Figure 1 as well as Figures 4 to 8 As shown, the display panel includes a driving backplane 1, a light-emitting layer 2, a color filter layer 4 and a plurality of prisms 71, the light-emitting layer 2 includes a plurality of light-emitting devices 220, and the plurality of light-emitting devices 220 are spaced apart on one side of the driving backplane 1; the color filter layer 4 is arranged on a side of the light-emitting layer 2 away from the driving backplane 1, and the color filter layer 4 includes at least three different colors of filter units 41, and the orthographic projection of the filter unit 41 on the driving backplane 1 overlaps with the orthographic projection of the corresponding light-emitting device 220 on the driving backplane 1; the plurality of prisms 71 are arranged on the color filter layer 4 away from the driving backplane 1 On one side, the orthographic projection of the prism 71 on the driving backplane 1 overlaps with the orthographic projection of the corresponding light-emitting device 220 on the driving backplane 1; the prism 71 includes a fitting surface and a refractive surface, the fitting surface is parallel to the surface of the driving backplane 1, and the refractive surface is inclined relative to the fitting surface, and the outgoing light of the light-emitting device 220 converges toward the center of the display panel along the inward direction after passing through the refractive surface, and along the inward direction, the angle between the refractive surface and the fitting surface of different prisms 71 gradually becomes smaller, and the inward direction is the direction from the edge of the display panel to the center of the display panel.

[0049] The display panel includes a plurality of prisms 71, which are arranged on a side of the color filter layer 4 away from the driving backplane 1. The orthographic projection of the prism 71 on the driving backplane 1 overlaps with the orthographic projection of the corresponding light-emitting device 220 on the driving backplane 1. The prism 71 includes a fitting surface and a refractive surface. Along the inward direction, the angle between the refractive surface and the fitting surface of different prisms 71 gradually decreases, so that the main light angle of the display panel The angle of the main ray adjusted by the refractive layer 7 is gradually reduced along the inward direction, and the viewing angle of the eyeball is also gradually reduced along the inward direction. The viewing angles at different positions can be matched to ensure that the intensity of light entering the eyeball is always the maximum, ensuring the brightness of the display image while improving the uniformity of the display image. When applied to a display device, there is no need to separately set a reflector group to collect the light passing through the filter unit 41, which can reduce the weight of the display device.

[0050] The display panel involved in the implementation of the present utility model is described in detail below with reference to specific embodiments.

[0051] like Figure 4As shown, the display panel includes a driving backplane 1, a light-emitting layer 2, a color filter layer 4 and a plurality of microlenses 51, the light-emitting layer 2 includes a plurality of light-emitting devices 220, the plurality of light-emitting devices 220 are spaced apart on one side of the driving backplane 1, the color filter layer 4 is arranged on a side of the light-emitting layer 2 away from the driving backplane 1, the color filter layer 4 includes at least three different colors of filter units 41, the orthographic projection of the filter unit 41 on the driving backplane 1 overlaps with the orthographic projection of the corresponding light-emitting device 220 on the driving backplane 1, the plurality of microlenses 51 are arranged on a side of the color filter layer 4 away from the driving backplane 1, the orthographic projection of the microlens 51 on the driving backplane 1 overlaps with the orthographic projection of the corresponding light-emitting device 220 on the driving backplane 1.

[0052] The center of the filter unit 41 is offset in the inward direction y relative to the center of the corresponding light emitting device 220. The inward direction y is the direction from the edge of the display panel to the center of the display panel. The outgoing light of the corresponding light emitting device 220 passes through the filter unit 41 and enters the eyeball in the inward offset direction, achieving an inward-type chief ray angle The overall brightness of the display panel under normal viewing angle can be significantly improved, and the color cast problem at the edge of the display panel can be improved. When applied to a display device, there is no need to separately set a reflector group to collect the light passing through the filter unit 41, which can reduce the weight of the display device.

[0053] The center of the microlens 51 is offset in the inward direction y relative to the center of the corresponding light emitting device 220, and the offset of the microlens 51 relative to the light emitting device 220 is equal to the offset of the filter unit 41 relative to the light emitting device 220. The microlens 51 can converge the light that is offset inward, and achieve an inward-type chief light angle By setting the offset distance of the microlenses 51 in different inward directions y, the multiple microlenses 51 form different distribution patterns, which can be better suitable for display panels of different shapes. It should be emphasized that no matter how the offset distance is set, it is necessary to ensure that the distance between two adjacent microlenses 51 is greater than 4 microns.

[0054] For display panels that require higher uniformity of the display image, usually no microlens 51 is provided on the side of the color filter layer 4 away from the base substrate 10, so as to avoid the convergence effect of the microlens 51 changing the main light angle and affecting the adjustment accuracy of the offset distance on the main light angle. Figure 5 As shown, in order to ensure the main ray angle In order to improve the adjustment accuracy, a refractive layer 7 can be provided on the side of the color filter layer 4 away from the driving backplane 1, the refractive layer 7 includes a plurality of prisms 71, the orthographic projection of the prism 71 on the driving backplane 1 overlaps with the orthographic projection of the corresponding light-emitting device 220 on the driving backplane 1, the prism 71 includes a fitting surface and a refractive surface, the fitting surface is parallel to the surface of the driving backplane 1, the refractive surface is inclined inwardly relative to the fitting surface, and the outgoing light of the light-emitting device 220 converges toward the center of the display panel along the inward direction after passing through the refractive surface.

[0055] The prism 71 may be a right-angled triangular prism 71. Along the inward direction, the angles between the refractive surfaces of different prisms 71 and the bonding surfaces gradually decrease, so that the main light angle of the display panel The angle of the main ray adjusted by the refractive layer 7 is gradually reduced along the inward direction, and the viewing angle of the eyeball is also gradually reduced along the inward direction. The viewing angles at different positions can be matched to ensure that the intensity of light entering the eyeball is always at the maximum, thereby ensuring the brightness of the display and improving the uniformity of the display.

[0056] The center of the prism 71 is offset in the inward direction relative to the center of the corresponding light emitting device 220, and the offset of the prism 71 relative to the light emitting device 220 is equal to the offset of the filter unit 41 relative to the light emitting device 220. Adjacent filter units 41 overlap each other to form an overlapping portion, and the refractive surface is inclined in the inward direction relative to the bonding surface. The orthographic projection of one end of the refractive surface of the prism 71 close to the bonding surface on the substrate substrate 10 overlaps with the orthographic projection of the overlapping portion on the substrate substrate 10, and the orthographic projection of one end of the refractive surface of the prism 71 close to the bonding surface on the substrate substrate 10 does not overlap with the orthographic projection of the overlapping portion on the substrate substrate 10.

[0057] It can be understood that the refractive surface of the prism 71 is thinner at one end close to the bonding surface, and the refractive surface of the prism 71 is thicker at one end away from the bonding surface. In the overlapping portion, the transmittance of the outgoing light is poor, and the refractive effect of the thinner end of the prism 71 is relatively poor compared to that of the thicker end. The orthographic projection on the base substrate 10 overlaps with the orthographic projection of the overlapping portion on the base substrate 10. The chief light angle of the overlapping portion with poor transmittance is adjusted by the thinner end with poor refractive effect. Even if the adjustment effect is poor, the impact on the display brightness is relatively small. The chief light angle of the non-overlapping portion with good transmittance is adjusted by the thicker end with good refractive effect. The adjustment effect is better, and the improvement effect on the display brightness is greater. In summary, offsetting the center of the prism 71 inward relative to the center of the corresponding light-emitting device 220 can better improve the brightness and uniformity of the display panel.

[0058] like Figures 6 to 8As shown, the retraction direction y includes a first retraction direction y1 and a second retraction direction y2, the second retraction direction y2 is perpendicular to the first retraction direction y1, the offset distance between two adjacent prisms 71 in the first retraction direction y1 is the first offset distance, the offset distance between two adjacent prisms 71 in the second retraction direction y2 is the second offset distance, and the first offset distance is equal to the second offset distance. The dotted line frame is the position of the prism 71 before the offset, and the solid line frame is the position of the prism 71 after the offset.

[0059] like Figure 6 As shown, a plurality of prisms 71 are arranged to form a distribution pattern of an annular array, and the distribution pattern has strong versatility and can be applied to display panels of different shapes. The retraction direction also includes a third retraction direction y3, and the third retraction direction y3 is located on the midline of the first retraction direction y1 and the second retraction direction y2 along the circumferential direction, and the offset distance between two adjacent prisms 71 in the third retraction direction y3 is the third offset distance. Between the first retraction direction y1 and the third retraction direction y3 and between the second retraction direction y2 and the third retraction direction y3 is the fourth retraction direction y4, and the offset distance between two adjacent prisms 71 in the third retraction direction y3 is the fourth offset distance. On the same circular ring, the first offset distance, the second offset distance, the third offset distance and the fourth offset distance are equal.

[0060] like Figure 7 As shown, a plurality of prisms 71 are arranged to form a distribution pattern of a square array, which is suitable for a square display panel. Figure 5 The difference is that, in the same square, the third offset distance is greater than the first offset distance and the second offset distance, and the offset component of the third offset distance in the first inward direction y1 is equal to the offset component in the second inward direction y2. The fourth offset distance is greater than the first offset distance and the second offset distance, and less than the third offset distance. The offset component of the fourth offset distance in the first inward direction y1 is not equal to the offset component in the second inward direction y2.

[0061] like Figure 8 As shown, a plurality of prisms 71 are arranged to form an elliptical array distribution pattern, which is suitable for a display panel whose length is greater than its width. Figure 6 and Figure 7 The difference is that, on the same ellipse, the first offset distance is smaller than the second offset distance, because the width of the observation area of ​​both eyes in the first inward direction y1 is smaller, so the first offset distance is smaller to match the narrower observation area, and the width of the observation area of ​​both eyes in the second inward direction y2 is larger, so the second offset distance is larger to match the wider observation area.

[0062] The present invention also provides a display device, which may include the display panel mentioned in the present invention. The specific structure and beneficial effects of the display device can refer to the display panel, which has been described in detail above, so it will not be repeated here.

[0063] It should be noted that, in addition to the display panel, the display device also includes other necessary components and components, such as a housing, a circuit board, a power cord, etc. Those skilled in the art may make corresponding supplements according to the specific use requirements of the display device, which will not be repeated here.

[0064] The display device can be a traditional electronic device, such as a mobile phone, a computer, a television, and a camcorder, or it can be an emerging wearable device, such as a virtual reality device and an augmented reality device, which are not listed here one by one.

[0065] Those skilled in the art will readily come up with other embodiments of the present invention after considering the specification and practicing the disclosure of the utility model herein. This application is intended to cover any variation, use or adaptation of the present utility model, which follows the general principles of the present utility model and includes common knowledge or customary technical means in the art that are not disclosed in the present utility model. The specification and examples are to be regarded as exemplary only, and the true scope and spirit of the present utility model are indicated by the appended claims.

Claims

1. A display panel, characterized in that: include: Driver backplane; A light-emitting layer, comprising a plurality of light-emitting devices, wherein the plurality of light-emitting devices are spaced apart on one side of the driving backplane; A color filter layer is provided on a side of the light-emitting layer away from the driving backplane, the color filter layer comprises at least three filter units of different colors, and the orthographic projection of the filter unit on the driving backplane overlaps with the orthographic projection of the corresponding light-emitting device on the driving backplane; A plurality of prisms, wherein the plurality of prisms are arranged on a side of the color filter layer away from the driving backplane, and the orthographic projections of the prisms on the driving backplane overlap with the orthographic projections of the corresponding light-emitting devices on the driving backplane; The prism includes a fitting surface and a refractive surface, the fitting surface is parallel to the surface of the driving backplane, and the refractive surface is inclined relative to the fitting surface. After the outgoing light of the light-emitting device passes through the refractive surface, it converges toward the center of the display panel along an inward direction. Along the inward direction, the angles between the refractive surfaces and the fitting surfaces of different prisms gradually become smaller, and the inward direction is the direction from the edge of the display panel to the center of the display panel.

2. The display panel according to claim 1, characterized in that: The center of the filter unit is offset in an inward direction relative to the center of the corresponding light emitting device.

3. The display panel according to claim 1, characterized in that: The center of the prism is offset along the inward direction relative to the center of the corresponding light emitting device, and the offset amount of the prism relative to the light emitting device is equal to the offset amount of the filter unit relative to the light emitting device.

4. The display panel according to claim 1, characterized in that: The adjacent filtering units overlap with each other to form an overlapping portion, the refractive surface is inclined relative to the fitting surface toward the inward direction, the orthographic projection of one end of the refractive surface of the prism close to the fitting surface on the driving back plate overlaps with the orthographic projection of the overlapping portion on the driving back plate, and the orthographic projection of one end of the refractive surface of the prism close to the fitting surface on the driving back plate does not overlap with the orthographic projection of the overlapping portion on the driving back plate.

5. The display panel according to claim 3, characterized in that: The inward direction includes a first inward direction and a second inward direction, the second inward direction is perpendicular to the first inward direction, the offset distance between two adjacent prisms in the first inward direction is a first offset distance, the offset distance between two adjacent prisms in the second inward direction is a second offset distance, and the first offset distance is equal to the second offset distance.

6. The display panel according to claim 5, characterized in that: The inward direction also includes a third inward direction, and is located on the midline of the first inward direction and the second inward direction along the circumferential direction. The offset distance between two adjacent prisms in the third inward direction is a third offset distance, and the third offset distance is equal to the first offset distance and the second offset distance.

7. The display panel according to claim 5, characterized in that: The inward direction also includes a third inward direction, and the third inward direction is located on the midline of the first inward direction and the second inward direction along the circumferential direction. The offset distance between two adjacent prisms in the third inward direction is the third offset distance, and the third offset distance is greater than the first offset distance and the second offset distance. The offset component of the third offset distance in the first inward direction is equal to the offset component in the second inward direction.

8. The display panel according to claim 3, characterized in that: The inward direction includes a first inward direction and a second inward direction, the second inward direction is perpendicular to the first inward direction, the offset distance between two adjacent prisms in the first inward direction is a first offset distance, the offset distance between two adjacent prisms in the second inward direction is a second offset distance, and the first offset distance is smaller than the second offset distance.

9. The display panel according to claim 3, characterized in that: The distance between a surface of the light-emitting layer away from the driving backplane and a surface of the prism close to the driving backplane is H, and the offset of the prism relative to the light-emitting device is D, where D≤2 / 3H.

10. A display device, characterized in that: A display panel comprising any one of claims 1 to 9.

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