Film layer structure, display panel and display device

Abstract

The invention provides a film layer structure, a display panel and a display device. The film layer structure comprises a substrate; the reflecting layer is arranged on one side of the substrate; the light-emitting layer is arranged on the side, away from the substrate, of the reflecting layer, and the light-emitting layer comprises a light-emitting area and a non-light-emitting area surrounding the light-emitting area; the reflecting layer is configured to receive part of light emitted from the light-emitting area and reflect the received light so that the light can be emitted from the non-light-emitting area. According to the embodiment of the invention, the reflecting layer is arranged between the light-emitting layer and the substrate, and part of light emitted by the light-emitting layer is reflected to be emitted from the non-light-emitting region by utilizing the reflecting capacity of the reflecting layer, so that the non-light-emitting area in the light-emitting layer is reduced, and the screen window effect is avoided.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a film layer structure, a display panel and a display device. Background Art

[0002] In recent years, with the development of display technology, organic light-emitting diode (OLED) display panels have been increasingly used in different display scenarios. Especially in the past two years, with the rapid development of virtual reality (VR) technology and augmented reality (AR) technology, OLED display panels have been used in VR devices and AR devices. However, when using VR and AR devices, the human eye needs to keep a close distance from the display panel, which causes the human eye to directly see the boundary between the luminous area and the non-luminous area of ​​the pixel points on the display panel, just like looking at something through a screen, so it is often called the Screen Door Effect (SDE).

[0003] Therefore, a solution to the SDE problem is urgently needed. Summary of the invention

[0004] The embodiments of the present application provide a film layer structure, a display panel and a display device, which are used to solve the screen effect produced during display.

[0005] In a first aspect, a film layer structure is provided, which includes a substrate; a reflective layer, which is arranged on one side of the substrate; and a light-emitting layer, which is arranged on a side of the reflective layer away from the substrate, wherein the light-emitting layer includes a light-emitting area and a non-light-emitting area surrounding the light-emitting area; wherein the reflective layer is configured to receive part of the light emitted from the light-emitting area and reflect the received light to emit from the non-light-emitting area.

[0006] In combination with the first aspect, in certain implementations of the first aspect, the light-emitting layer includes: a plurality of transparent electrodes, which are arranged on a side of the reflective layer away from the substrate; a plurality of light-emitting elements, which are respectively arranged on a side of the transparent electrode away from the reflective layer, and there are gaps between adjacent light-emitting elements, and the gaps form non-luminous areas, and part of the light emitted by the light-emitting elements enters the reflective layer through the transparent electrodes, and the reflective layer reflects the incident light to be emitted from the gaps.

[0007] In combination with the first aspect, in some implementations of the first aspect, a pixel driving circuit is arranged on the substrate, and the reflective layer is provided with at least one through hole, which is configured to allow a signal line to pass through to electrically connect the transparent electrode and the pixel driving circuit.

[0008] In combination with the first aspect, in some implementations of the first aspect, a light-transmitting layer is further included, located between the reflective layer and the transparent electrode.

[0009] In combination with the first aspect, in certain implementations of the first aspect, the orthographic projection of the reflective layer in the thickness direction covers the light-emitting layer, or the reflective layer includes a plurality of spaced-apart sub-reflective layers, the plurality of sub-reflective layers correspond one-to-one to the plurality of sub-reflective layers, and the orthographic projection of the sub-reflective layer on the light-emitting layer at least covers the orthographic projection of the corresponding light-emitting element on the light-emitting layer.

[0010] In combination with the first aspect, in certain implementations of the first aspect, when the reflective layer includes multiple sub-reflective layers, there is a first distance L1 between the edge of the orthographic projection of the sub-reflective layer on the light-emitting layer and the edge of the orthographic projection of the corresponding light-emitting element on the light-emitting layer, where L1 is a positive integer, and L1≥1um.

[0011] In combination with the first aspect, in some implementations of the first aspect, when the reflective layer includes a plurality of sub-reflective layers, 3um≤L1≤5um.

[0012] In combination with the first aspect, in some implementations of the first aspect, in a direction perpendicular to the light-emitting layer, there is a second distance L2 between the transparent electrode and the reflective layer, where L2 is a positive integer, and L2≥1 um.

[0013] In combination with the first aspect, in some implementations of the first aspect, when the reflective layer includes a plurality of sub-reflective layers, L2≥2*L1.

[0014] In combination with the first aspect, in some implementations of the first aspect, when the reflective layer includes a plurality of sub-reflective layers, 6um≤L2≤10um.

[0015] In combination with the first aspect, in certain implementations of the first aspect, the reflective layer has a first surface on the side away from the substrate, the orthographic projection of the first surface onto the light-emitting element at least covers the light-emitting element, the first surface is a plane, or the first surface is an arc-shaped surface protruding toward the light-emitting layer.

[0016] In combination with the first aspect, in some implementations of the first aspect, the material of the reflective layer includes at least one of silver, aluminum, and gold.

[0017] In combination with the first aspect, in some implementations of the first aspect, the reflective layer is connected to a fixed potential.

[0018] In combination with the first aspect, in some implementations of the first aspect, it further includes: a planar layer disposed between the substrate and the reflective layer, and the material of the planar layer is a light-transmitting material.

[0019] In combination with the first aspect, in some implementations of the first aspect, the planar layer is provided with at least one through hole penetrating along a thickness direction, and the through hole is configured to allow a signal line to pass through.

[0020] In a second aspect, a display panel is provided, and the display panel includes the film layer structure described in any one of the above items.

[0021] In a third aspect, a display device is provided, and the display device includes the display panel described above.

[0022] The present application provides a film layer structure, a display panel and a display device. The film layer structure includes a substrate, a reflective layer and a light-emitting layer, wherein the reflective layer is arranged on one side of the substrate; the light-emitting layer is arranged on the side of the reflective layer away from the substrate, and the light-emitting layer includes a light-emitting area and a non-light-emitting area surrounding the light-emitting area; wherein the reflective layer is configured to receive part of the light emitted from the light-emitting area and reflect the received light to emit from the non-light-emitting area.

[0023] In the embodiment of the present application, a reflective layer is arranged between the substrate and the light-emitting layer so that part of the light emitted by the light-emitting layer in the light-emitting area can be directed toward the reflective layer, and the reflective layer then reflects the light to the non-light-emitting area and emits it, thereby utilizing the reflective ability of the reflective layer to increase the actual light-emitting area in the light-emitting layer. Even when the distance between the human eye and the display panel is close, it is difficult to see the boundary between the light-emitting area and the non-light-emitting area, thereby improving the screen window effect that occurs during display. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0025] Figure 1 A partial cross-sectional view of a stacked film layer structure in a display panel.

[0026] Figure 2 It is a partial cross-sectional schematic diagram of the membrane structure in one embodiment of the present application.

[0027] Figure 3 for Figure 2 A partial enlarged view of part A.

[0028] Figure 4 It is a top view of the light-emitting layer in the film structure in one embodiment of the present application.

[0029] Figure 5 It is a partial cross-sectional schematic diagram of a membrane structure in yet another embodiment of the present application.

[0030] Figure 6 for Figure 5 Schematic diagram of the membrane structure in the middle part.

[0031] Figure 7 for Figure 6 A top view of a light emitting element and a sub-reflective layer in cooperation.

[0032] Figure 8 It is a partial cross-sectional schematic diagram of a membrane structure in yet another embodiment of the present application.

[0033] Fig. 9 It is a cross-sectional schematic diagram of the cooperation between the light emitting element and the sub-reflective layer of the film structure in one embodiment of the present application.

[0034] Fig.10 It is a cross-sectional schematic diagram of the cooperation between the light emitting element and the sub-reflective layer of the film structure in another embodiment of the present application. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. In the detailed description below, many specific details are proposed to provide a comprehensive understanding of the present application. However, it is obvious to those skilled in the art that the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating examples of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application. The features and exemplary embodiments of various aspects of the present application will be described in detail below.

[0036] Figure 1 FIG. 1 is a partial cross-sectional view of a film structure stacked in a display panel. The direction indicated by arrow H is the thickness direction of the display panel. Figure 1 As shown, the film structure in the display panel includes a substrate 10, a flat layer 20, a light-emitting layer 30' and an encapsulation layer 40 which are stacked from bottom to top in the thickness direction H. The light-emitting layer 30' includes a light-emitting area BA and a non-light-emitting area NA surrounding the light-emitting area BA, and the light emitted by the light-emitting area BA is emitted from the encapsulation layer 40. Since the non-light-emitting area NA does not have the ability to emit light, the light path direction of the light emitted by the light-emitting area BA is generally changed by the coordination of structures such as a deflection plate and a lens with a magnifying effect arranged outside the film structure, so that the final visual effect shows that there is no visual dark area in the entire display area of ​​the display panel.

[0037] However, if the above-mentioned film structure is applied to application scenarios such as VR and AR, which require the human eye to maintain a close distance with the display panel, the human eye will directly see the boundary between the luminous area BA and the non-luminous area NA in the luminous layer 30', thus producing a screen window effect.

[0038] In view of this, the present application provides a film layer structure, a display panel and a display device to solve the screen window effect.

[0039] Figure 2 Schematic diagram of a partial cross section of the film structure in one embodiment of the present application. The direction indicated by arrow H is the thickness direction of the film structure, which will not be emphasized separately in the following. In addition, it should be noted that the film structure includes a display area and a non-display area surrounding the display area. For the sake of convenience, only a partial cross section schematic diagram of the display area in the film structure is shown. Figure 2 As shown, the film structure includes a substrate 10, a reflective layer 50 and a light-emitting layer 30 which are sequentially stacked from bottom to top in the thickness direction H. The reflective layer 50 is arranged on one side of the substrate 10, and the light-emitting layer 30 is arranged on the side of the reflective layer 50 away from the substrate 10. The light-emitting layer 30 includes a light-emitting area BA and a non-light-emitting area NA surrounding the light-emitting area BA. The reflective layer 50 is configured to receive part of the light emitted from the light-emitting area BA and reflect the received light to be emitted from the non-light-emitting area NA.

[0040] In this embodiment, by setting the reflective layer 50 between the substrate 10 and the light-emitting layer 30, part of the light emitted by the light-emitting layer 30 in the light-emitting area BA can be directed to the reflective layer 50, and the reflective layer 50 then reflects the light to the non-light-emitting area NA for emission. Thus, the actual light-emitting area in the light-emitting layer 30 is increased by utilizing the reflective ability of the reflective layer 50. Even when the distance between the human eye and the display panel is relatively close, it is not easy to see the boundary between the light-emitting area BA and the non-light-emitting area NA, thereby improving the screen effect that occurs during display.

[0041] The following combination Figures 3 to 10 The specific implementation of the membrane layer structure is introduced in detail.

[0042] Figure 3 for Figure 2 A partial enlarged view of part A. Figure 4 FIG. 1 is a top view of the light-emitting layer in the film structure in one embodiment of the present application. Figure 3 and Figure 4As shown, the light-emitting layer 30 includes a first electrode 302, a second electrode 303, and a light-emitting element 301 sandwiched between the first electrode 302 and the second electrode 303, one of the first electrode 302 and the second electrode 303 is an anode, and the other is a cathode. Among them, at least the first electrode 302 located between the light-emitting element 301 and the reflective layer 50 is set as a transparent electrode, and the first electrode 302, the second electrode 303 and the light-emitting element 301 are respectively set as a plurality, and there is a gap M1 between adjacent light-emitting elements 301, and the gap M1 forms a non-light-emitting area NA. Part of the light emitted by the light-emitting element 301 is incident on the reflective layer 50 through the first electrode 302, and the reflective layer 50 reflects the incident light to be emitted from the gap M1. The first electrode 302 between the light-emitting element 301 and the reflective layer 50 is set as a transparent electrode, so that part of the light emitted by the light-emitting element 301 is emitted in the direction of the encapsulation layer 40, and the other part of the light can pass through the first electrode 302 and be emitted to the reflective layer 50, and the reflective layer 50 can reflect the part of the light and emit it from the gap M1. Therefore, the actual light emitting area BA on the light emitting layer 30 is the sum of the area of ​​the light emitting element 301 and the area enclosed by the gap M1 where reflected light is emitted, i.e., the effective light emitting area BA1. This increases the proportion of the actual light emitting area in the light emitting layer 30, thereby effectively improving the screen effect.

[0043] In one embodiment, the first electrode 302 is set as a transparent anode, and the second electrode 303 is a cathode. In other examples, the first electrode 302 can also be set as a transparent cathode, and the second electrode 303 can be set as an anode, which is not specifically limited.

[0044] In one embodiment, the light-emitting element 301 may be an OLED light-emitting element. When the film structure is used in devices with higher requirements such as AR and VR, the light-emitting element 301 may also be an active-matrix organic light emitting diode (AMOLED) light-emitting element. When the light-emitting element 301 is an AMOLED light-emitting element, a pixel driving circuit is arranged on the substrate 10 for electrically connecting to the corresponding light-emitting element 301, respectively, so as to drive the corresponding light-emitting element 301 to emit light. For ease of description, the light-emitting element 301 is described below as an AMOLED light-emitting element.

[0045] like Figure 4As shown, the plurality of light-emitting elements 301 may include a first light-emitting element 3011, a second light-emitting element 3012, and a third light-emitting element 3013, which emit light of different colors and are arranged in an array. For example, the first light-emitting element 3011 emits red light, the second light-emitting element 3012 emits green light, and the third light-emitting element 3013 emits blue light. The area occupied by the first light-emitting element 3011, the second light-emitting element 3012, and the third light-emitting element 3013 in the light-emitting layer 30 is used as the light-emitting area BA of the light-emitting layer 30, and the rest is the non-light-emitting area NA. There is a gap M1 between each adjacent first light-emitting element 3011, the second light-emitting element 3012, and the third light-emitting element 3013, and the gap M1 forms the non-light-emitting area NA. Generally speaking, the gap M1 between the light-emitting elements 301 is generally maintained between 18um-24um to prevent the problem of color mixing between light-emitting elements 301 of different colors.

[0046] like Figure 3 and Figure 4 As shown, taking a group of adjacent first light-emitting elements 3011, second light-emitting elements 3012 and third light-emitting elements 3013 as an example, when the first light-emitting element 3011, the second light-emitting element 3012 and the third light-emitting element 3013 emit light, a portion of the red light emitted by the first light-emitting element 3011 directly passes through the encapsulation layer 40 and is emitted, and the other portion of the light passes downward through the transparent anode and is emitted to the reflective layer 50, and the reflective layer 50 reflects the light of the first light-emitting element 3011 in this portion and then emits it to the gap M1, and passes through the gap M1 and is emitted from the encapsulation layer 40. At this time, the actual red light emitting area of ​​the first light-emitting element 3011 is the effective light-emitting area BA1. Similarly, the actual light-emitting areas of the green light and the blue light of the second light-emitting element 3012 and the third light-emitting element 3013 are also increased to the effective light-emitting area BA1, which will not be repeated. By utilizing the reflection principle of the reflective layer 50, it is not necessary to reduce the area of ​​the non-light-emitting area NA in the light-emitting layer 30 by further reducing the gap between the light-emitting elements 301, which can avoid the problem of color mixing and effectively improve the screen effect that occurs during display.

[0047] It is understandable that there may be a certain distance between the effective light emitting areas BA1 of adjacent light emitting elements 301, or there may be a partial overlap, and adaptive adjustment may be made according to the actual application scenario without specific limitation. Figure 4 When there is a gap between the effective light-emitting areas BA1 of adjacent light-emitting elements 301, the color of the light emitted by the entire effective light-emitting area BA1 is opposite to the color of the light emitted by the corresponding light-emitting element 301. When there is a partial overlap between the effective light-emitting areas BA1 of adjacent light-emitting elements 301, the color of the light emitted by the non-overlapping part is opposite to the color of the light emitted by the corresponding light-emitting element 301, and the overlapping part is synthesized into white light after color mixing.

[0048] In one embodiment, the material of the reflective layer 50 includes at least one of silver, aluminum, and gold. In this embodiment, the material of the reflective layer 50 can be set to mirror silver to have a higher reflective ability, which is beneficial to improve the display brightness and expand the actual light emitting area of ​​the light emitting layer 30.

[0049] In an optional embodiment, the reflective layer 50 has a first surface on the side facing the light emitting element 301, and the orthographic projection of the first surface to the light emitting layer 30 at least covers the light emitting element 301. The first surface can be set as a plane, so that the red, green and blue lights emitted by the first light emitting element 3011, the second light emitting element 3012 and the third light emitting element 3012 have the same degree of reflection, which is conducive to maintaining the ratio of the overall luminous flux of the first light emitting element 3011, the second light emitting element 3012 and the third light emitting element 3013 and synthesizing white light. In other embodiments, the surface of the reflective layer 50 on the side facing the light emitting element 301 can also be set as a curved surface, which is not specifically limited.

[0050] In an optional embodiment, the reflective layer 50 is connected to a fixed potential. The fixed potential may be, for example, a zero potential, a positive potential of a certain value, or a negative potential of a certain value, without specific limitation. The metal reflective layer 50 can avoid signal crosstalk to the pixel driving circuit arranged in the substrate 10 for driving the light-emitting element 301 to emit light.

[0051] It is understandable that at least one through hole 50a may be provided on the reflective layer 50, and the signal line of the pixel driving circuit passes through the through hole 50a and is electrically connected to the first electrode 302 of the light-emitting layer 30, so as to drive the light-emitting element 301 on the first electrode 302 to emit light. The through hole 50a and the signal line electrically connected to the pixel driving circuit are gap matched. The gap match between the reflective layer 50 and the signal line avoids contact between the two, thereby avoiding the problem of signal crosstalk.

[0052] In one embodiment, the film structure further includes a light-transmitting layer 60, which is located between the reflective layer 50 and the transparent first electrode 302. The orthographic projection of the light-transmitting layer 60 in the thickness direction H covers the surface of the reflective layer 50, and the thickness of the light-transmitting layer 60 is adjustable. The light-transmitting layer 60 can be, for example, a light-transmitting inorganic dielectric layer, so as to separate the reflective layer 50 and the light-emitting layer 30 while allowing light to pass through and complete reflection. In addition, the light-transmitting surface 601 of the light-transmitting layer 60 away from the reflective layer 50 is set to a plane, so as to facilitate the arrangement of the electrodes of the light-emitting layer 30 and the light-emitting element 301.

[0053] Optionally, the light-transmitting layer 60 may be provided with through holes respectively corresponding to the through holes 50 a , so that the signal lines can pass through the light-transmitting layer 60 to be connected to the pixel driving circuit of the substrate 10 .

[0054] In this embodiment, the optical path and angle of the light emitted by the light emitting element 301 and the light reflected by the reflective layer 50 are changed by changing the thickness of the light-transmitting layer 60, so that the size of the effective light-emitting area BA1 can be changed. In addition, the light-transmitting layer 60 is conducive to maintaining the plurality of first electrodes 302 in the same plane, thereby effectively improving the color deviation of the viewing angle of the screen.

[0055] like Figure 2 and Figure 3 The reflective layer 50 can be set as one, and the positive projection of the reflective layer 50 in the thickness direction H completely covers the light-emitting layer 30, so as to facilitate the preparation of the reflective layer 50 and the connection of the reflective layer 50 to the fixed potential.

[0056] In some embodiments, the reflective layer 50 may include a plurality of sub-reflective layers 501. Figures 5 to 8 The matching structure when the reflective layer 50 includes a plurality of sub-reflective layers 501 is described in detail.

[0057] Figure 5 It is a partial cross-sectional schematic diagram of a membrane structure in yet another embodiment of the present application. Figure 6 for Figure 5 Schematic diagram of the membrane structure in the middle part. Figure 7 for Figure 6 A top view of a light emitting element and a sub-reflective layer in cooperation. Figure 8 FIG. 1 is a partial cross-sectional schematic diagram of a membrane structure in another embodiment of the present application. Figures 5 to 8 As shown, the reflective layer 50 may include a plurality of spaced sub-reflective layers 501, the plurality of sub-reflective layers 501 correspond to the plurality of light-emitting elements 301 one by one, and the orthographic projection of the sub-reflective layer 501 on the light-emitting layer 30 at least covers the orthographic projection of the corresponding light-emitting element 301 on the light-emitting layer 30. Dividing the large-area reflective layer 50 into a plurality of spaced sub-reflective layers 501 is beneficial to reducing the signal crosstalk brought to the pixel driving circuit in the substrate 10, while saving the material used for the reflective layer 50 and reducing the cost.

[0058] In one embodiment, Figure 6 and Figure 7 As shown, there is a first distance L1 between the edge of the orthographic projection of the sub-reflection layer 501 on the light-emitting layer and the edge of the orthographic projection of the corresponding light-emitting element 301 on the light-emitting layer 30, where L1 is a positive integer and L1≥1um. The sub-reflection layer 501 is arranged to be opposite to the light-emitting element 301 in the thickness direction H, and the edge of the sub-reflection layer 501 is at least beyond the edge of the light-emitting element 301, so as to ensure that the light emitted by the light-emitting element 301 to the corresponding sub-reflection layer 501 can be emitted to the non-light-emitting area NA after being reflected by the reflective layer 50, so as to increase the light-emitting area BA of the light-emitting layer 30 to the effective light-emitting area BA1.

[0059] In an optional embodiment, 3um≤L1≤5um. The first distance L1 may be, for example, 3um, 4um, or 5um.

[0060] In one embodiment, in a direction perpendicular to the light-emitting layer 30 (i.e., along the thickness direction H), there is a second distance L2 between the transparent electrode and the reflective layer 50, where L2 is a positive integer, and L2 ≥ 1um. For example, the second distance L2 can be controlled by adjusting the thickness of the light-transmitting layer 60, thereby adjusting the area of ​​the effective light-emitting area BA1. When the second distance L2 is increased, the optical path of the light-emitting element 301 emitting light to the reflective layer 50 and the optical path of the reflected light after the light is reflected are increased. As the optical path of the emitted light and the reflected light increases, the light becomes more divergent, and the area of ​​the effective light-emitting area BA1 of the light-emitting layer 30 increases. On the contrary, the area of ​​the effective light-emitting area BA1 of the light-emitting layer 30 decreases, which will not be described in detail.

[0061] In an optional embodiment, when the reflective layer 50 is provided with a plurality of sub-reflective layers 501 respectively corresponding to the light-emitting elements 301, when controlling the increase or decrease of the second distance L2, the first distance L1 between the sub-reflective layer 501 and the light-emitting element 301 needs to be considered simultaneously. This is to avoid that when the second distance L2 is too large, the light emitted by the light-emitting element 301 through the first electrode 302 will be emitted to the gap between adjacent sub-reflective layers 501 and cannot be reflected. This makes the area of ​​the effective light-emitting area BA1 unable to reach the expected level, and also causes light loss, affecting the light brightness.

[0062] Optionally, L2≥2*L1. Wherein, 6um≤L2≤10um, and the second distance L2 may be, for example, 6um, 7um, 8um, or 9um.

[0063] In an alternative embodiment, if Figure 8 As shown, the multiple sub-reflective layers 501 can also be electrically connected to the fixed potential 502. For example, the multiple sub-reflective layers 501 are electrically connected through the light-transmitting metal wire 503 and then electrically connected to the fixed potential 502 located in the non-display area outside the film layer structure. Alternatively, the multiple sub-reflective layers 501 can be electrically connected to the external fixed potential 502 respectively, without specific limitation.

[0064] In this embodiment, the reflective layer 50 is provided as a plurality of sub-reflective layers 501 respectively corresponding to the light-emitting elements 301, which can improve the screen window effect and can more flexibly adjust the area of ​​the effective light-emitting area BA1 according to the actual situation to meet the needs of different scenes. In addition, it is beneficial to reduce the signal crosstalk brought to the pixel driving circuit in the substrate 10, save the material of the reflective layer 50, and reduce the cost.

[0065] Fig. 9 It is a cross-sectional schematic diagram of the cooperation between the light emitting element and the sub-reflective layer of the film structure in one embodiment of the present application. Fig.10 It is a cross-sectional schematic diagram of the cooperation between the light emitting element and the sub-reflective layer of the film structure in another embodiment of the present application.

[0066] In one embodiment, continue as Figure 6 As shown, the sub-reflection layer 501 has a first surface away from the substrate 10, and the first surface at least covers the light-emitting element 301 when projected toward the light-emitting element 301, and the first surface may be a plane 5011. This allows the light of corresponding colors emitted by different light-emitting elements 301 to have the same degree of reflection, which is beneficial to maintaining the proportion of the overall luminous flux of the light-emitting element 301 and synthesizing white light.

[0067] In an alternative embodiment, if Fig. 9 As shown, the first surface may be an arc-shaped surface 5012 protruding toward the light-emitting layer 30. In order to increase the light reflection effect, the effective light-emitting area BA1 may be increased on the basis of increasing the second distance L2.

[0068] In an alternative embodiment, if Fig.10 As shown, the first surface of the sub-reflection layer 501 may include a plane 5011 and an arcuate surface 5012, and the arcuate surface 5012 is disposed around the plane 5011. In the orthographic projection of the first surface on the plane where the light-emitting element 301 is located, the plane 5011 coincides with the light-emitting element 301, and the arcuate surface 5012 is located outside the light-emitting element 301. The diffusion area of ​​the reflected light is maintained and increased in a ratio that can take into account the overall luminous flux of the light-emitting element 301.

[0069] It can be understood that the first surface of the sub-reflective layer 501 can also be set to other shapes, such as an uneven wavy surface, etc., which is not specifically limited.

[0070] In this embodiment, the first surface shape of the sub-reflection layer 501 is set to adjust the effective light-emitting area BA1 of the light-emitting layer 30, thereby further improving the screen effect during display.

[0071] In one embodiment, the film structure further includes a flat layer 20, which is located between the substrate 10 and the reflective layer 50. The material of the flat layer 20 is a light-transmitting material, and the surface of the flat layer 20 away from the substrate 10 is a flat surface 201. The flat layer 20 and the light-transmitting layer 60 are provided to facilitate the flattening of the stacked reflective layer 50, the first electrode 302, etc., thereby facilitating the accuracy of the optical path when the light-emitting element 301 emits light, and effectively improving the color deviation of the visual angle of the screen.

[0072] It can be understood that the planar layer 20 may be provided with at least one through hole penetrating along the thickness direction H, and the through hole may correspond to the through hole 50 a in the thickness direction H, and the through hole is configured to allow the signal line to pass through.

[0073] In an optional embodiment, the planar layer 20 is the same as the light-transmitting layer 60, and both can be inorganic layers, and the inorganic layer is the interlayer dielectric layer (ILD) of the display panel. It can be understood that the materials selected for the planar layer 20 and the light-transmitting layer 60 can be the same or different, and the refractive index of the selected materials of the planar layer 20 and the light-transmitting layer 60 can be used, and then matched with other layers in the film structure to comprehensively control the emission angle of the light reflected by the reflective layer, thereby changing the area of ​​the effective light-emitting area BA1.

[0074] In one embodiment, the substrate 10 may include a base layer 101 , on which a metal gate 103 forming a pixel driving circuit and polysilicon insulated and connected via a gate insulating layer 102 are arranged, and the source / drain 104 is not described in detail.

[0075] In an optional embodiment, the base layer 101 is rigid, such as glass, and the inorganic layer can be an oxide layer, a nitride layer or a carbide layer, such as made of silicon nitride or silicon carbide.

[0076] In an optional embodiment, when preparing the film structure in the above embodiments, the reflective layer 50 can be formed after the flat layer 20 and before the light-transmitting layer 60. That is, the reflective layer 50 can be completed in the same array process with the encapsulation layer 40, the light-emitting layer 30 and other layers, and there is no need to add additional process steps to separately form the reflective layer 50. Compared with setting a magnifying lens outside the film structure, the process steps are saved, the efficiency of film structure preparation is improved, and the cost is reduced.

[0077] The embodiment of the present application also provides a display panel, including the film layer structure described above. The display panel may be an active matrix organic light-emitting diode (AMOLED) display panel, which can improve the screen effect that occurs during display.

[0078] The embodiment of the present application also provides a display device, including the display panel described above. The display device can be a device with a close-range display function, such as a wearable device such as a VR device, an AR device, or a computer, a tablet computer, etc., without specific limitation.

[0079] It should be noted that in the drawings of the present application document, the sizes of layers and regions may be exaggerated for clarity of illustration. It is also understood that when an element or layer is referred to as being "on" another element or layer, it may be directly on the other element, or there may be an intermediate layer. In addition, it is understood that when an element or layer is referred to as being "under" another element or layer, it may be directly under the other element, or there may be more than one intermediate layer or element. In addition, it is also understood that when a layer or element is referred to as being "between" two layers or two elements, it may be the only layer between the two layers or two elements, or there may also be more than one intermediate layer or element. Similar reference numerals throughout the text indicate similar elements.

[0080] In addition, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0081] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0082] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A film structure, characterized in that: include: substrate; A reflective layer, disposed on one side of the substrate; A light-emitting layer is disposed on a side of the reflective layer away from the substrate, wherein the light-emitting layer comprises a light-emitting area and a non-light-emitting area surrounding the light-emitting area; The reflective layer is configured to receive a portion of the light emitted from the light-emitting area and reflect the received light to emit from the non-light-emitting area.

2. The film structure according to claim 1, characterized in that: The light-emitting layer comprises: A plurality of transparent electrodes are arranged on a side of the reflective layer away from the substrate: A plurality of light-emitting elements are respectively arranged on a side of the transparent electrode away from the reflective layer, with gaps between adjacent light-emitting elements, the gaps forming the non-light-emitting area, part of the light emitted by the light-emitting elements is emitted into the reflective layer through the transparent electrode, and the reflective layer reflects the incident light to be emitted from the gaps; Preferably, the substrate is provided with a pixel driving circuit, the reflective layer is provided with at least one through hole, and the through hole is configured to allow a signal line to pass through so as to electrically connect the transparent electrode and the pixel driving circuit.

3. The film structure according to claim 2, characterized in that: It also includes a light-transmitting layer located between the reflective layer and the transparent electrode.

4. The film structure according to claim 2, characterized in that: The orthographic projection of the reflective layer in the thickness direction covers the light-emitting layer, or the reflective layer includes a plurality of sub-reflective layers distributed at intervals, the plurality of sub-reflective layers correspond to the plurality of light-emitting elements one by one, and the orthographic projection of the sub-reflective layer on the light-emitting layer at least covers the orthographic projection of the corresponding light-emitting element on the light-emitting layer; Preferably, when the reflective layer includes a plurality of sub-reflective layers, the sub-reflective layers have a first distance L1 between the edge of the orthographic projection of the light-emitting layer and the edge of the orthographic projection of the corresponding light-emitting element on the light-emitting layer, where L1 is a positive integer and L1≥1um; Preferably, when the reflective layer includes a plurality of sub-reflective layers, 3um≤L1≤5um.

5. The film structure according to claim 4, characterized in that: In a direction perpendicular to the light-emitting layer, there is a second distance L2 between the transparent electrode and the reflective layer, where L2 is a positive integer and L2≥1 um; Preferably, when the reflective layer includes a plurality of sub-reflective layers, L2≥2*L1; Preferably, when the reflective layer includes a plurality of sub-reflective layers, 6um≤L2≤10um 。 6. The film structure according to claim 4, characterized in that: The reflective layer has a first surface on a side away from the substrate, the orthographic projection of the first surface onto the light-emitting layer at least covers the light-emitting element, and the first surface is a plane, or the first surface is an arc-shaped surface protruding toward the light-emitting layer.

7. The film structure according to any one of claims 1 to 6, characterized in that: The material of the reflective layer includes at least one of silver, aluminum, and gold; Preferably, the reflective layer is connected to a fixed potential.

8. The film structure according to any one of claims 2 to 6, characterized in that: Also includes: A planar layer, disposed between the substrate and the reflective layer, wherein the material of the planar layer is a light-transmitting material; Preferably, the planar layer is provided with at least one through hole penetrating along a thickness direction, and the through hole is configured to allow the signal line to pass through.

9. A display panel, characterized in that: include: The film structure according to any one of claims 1 to 8.

10. A display device, characterized in that: Comprising the display panel as claimed in claim 9.

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