Display panel and display device

Abstract

The present disclosure relates to a display panel and a display device, and belongs to the technical field of display. The display panel comprises a driving backboard, a plurality of light emitting devices and an encapsulation layer. The light emitting devices are arranged on one side of the driving backboard. The encapsulation layer covers the light emitting devices. The encapsulation layer comprises a first inorganic layer, a reflective layer and a second inorganic layer arranged in sequence in a direction away from the driving backboard. The reflective layer comprises a plurality of first light transmission holes, and the first light transmission holes overlap at least one light emitting device. The display panel of the present disclosure can realize mirror display while improving color deviation.

Description

TECHNICAL FIELD

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

[0002] The mirror display panel combining display function and mirror function can not only display images but also be used as a mirror. The display panel with mirror display function can be applied to vehicle rearview mirror, home, advertising, etc. However, the existing display panel with mirror display function is prone to color cast, which affects the display effect.

[0003] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present disclosure, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. SUMMARY

[0004] The purpose of the present disclosure is to provide a display panel and a display device, which can improve color cast while realizing mirror display.

[0005] According to one aspect of the present disclosure, a display panel is provided, comprising:

[0006] a driving back plate;

[0007] a plurality of light emitting devices arrayed on one side of the driving back plate;

[0008] an encapsulation layer covering the light emitting devices; the encapsulation layer comprises a first inorganic layer, a reflective layer and a second inorganic layer successively arranged in a direction away from the driving back plate; the reflective layer comprises a plurality of first light transmission holes, and each first light transmission hole overlaps at least one light emitting device.

[0009] In an exemplary embodiment of the present disclosure, the encapsulation layer further comprises:

[0010] a light absorption layer arranged between the first inorganic layer and the reflective layer; the light absorption layer has a plurality of second light transmission holes, and each second light transmission hole overlaps one first light transmission hole.

[0011] In an exemplary embodiment of the present disclosure, the encapsulation layer further comprises:

[0012] a first encapsulation flat layer covering the light absorption layer; the first encapsulation flat layer is transparent; the reflective layer is arranged on a surface of the first encapsulation flat layer away from the driving back plate.

[0013] In an exemplary embodiment of the present disclosure, the encapsulation layer further comprises:

[0014] A plurality of filling portions are filled in each of the second light-transmitting holes in one-to-one correspondence, and the filling portions are transparent materials; the filling portions away from the surface of the driving backboard and the surface of the light-absorbing layer can be located in the same plane.

[0015] In an example embodiment of the present disclosure, the encapsulation layer further comprises:

[0016] A plurality of light filtering portions are filled in each of the second light-transmitting holes in one-to-one correspondence, and the colors of at least two different light filtering portions are different; the first encapsulation flat layer covers the light filtering portions and the light-absorbing layer.

[0017] In an example embodiment of the present disclosure, the encapsulation layer further comprises:

[0018] An organic layer covers the reflective layer; the second inorganic layer covers the organic layer.

[0019] In an example embodiment of the present disclosure, the encapsulation layer further comprises:

[0020] A plurality of light filtering portions are arrayed on the side of the reflective layer away from the driving backboard, and one light filtering portion overlaps one first light-transmitting hole, and the colors of at least two different light filtering portions are different.

[0021] In an example embodiment of the present disclosure, the encapsulation layer further comprises:

[0022] A second encapsulation flat layer covers the reflective layer; the light filtering portions are arranged on the surface of the second encapsulation flat layer away from the driving backboard.

[0023] In an example embodiment of the present disclosure, the encapsulation layer further comprises:

[0024] An organic layer covers each of the light filtering portions; the second inorganic layer covers the organic layer.

[0025] In an example embodiment of the present disclosure, the number of the first light-transmitting holes is the same as the number of the light-emitting devices, and each of the first light-transmitting holes overlaps one light-emitting device in one-to-one correspondence.

[0026] In an example embodiment of the present disclosure, the number of the first light-transmitting holes is less than the number of the light-emitting devices, and the orthographic projections of at least two light-emitting devices on the driving backboard are located within the orthographic projection of the same first light-transmitting hole on the driving backboard.

[0027] In an example embodiment of the present disclosure, the material of the reflective layer comprises at least one of aluminum, silver, and molybdenum.

[0028] In an exemplary embodiment of the present disclosure, the display panel further comprises:

[0029] A cover plate is attached to the surface of the encapsulation layer away from the driving backplane.

[0030] According to an aspect of the present disclosure, a display device is provided, comprising the display panel as described in any one of the above.

[0031] The display panel and display device of the present disclosure, since the encapsulation layer has a reflective layer, the ambient light can be reflected by the reflective layer, so that the display panel has the function of a mirror through the encapsulation layer. At the same time, since the encapsulation layer directly covers the light emitting device, the distance between the reflective layer and the light emitting device is minimized under the premise of ensuring the encapsulation effect, and the smaller the distance between the first light transmission hole and the light emitting device, the larger the exit angle of the light emitted by the light emitting device when the light exits from the first light transmission hole, which is conducive to increasing the light intensity in a larger range and improving color cast in a larger viewing angle.

[0032] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0033] The accompanying drawings, which are incorporated into and form part of the specification, illustrate embodiments consistent with the present disclosure and, together with the specification, serve to explain the principles of the present disclosure. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained from these drawings without creative labor for those skilled in the art.

[0034] Figure 1 It is a top view of an embodiment of the display panel of the present disclosure.

[0035] Figure 2 It is a partial cross-sectional schematic view of a first embodiment of the display panel of the present disclosure.

[0036] Figure 3 It is a partial cross-sectional schematic view of a second embodiment of the display panel of the present disclosure.

[0037] Figure 4 It is a partial cross-sectional schematic view of a third embodiment of the display panel of the present disclosure.

[0038] Figure 5 It is a partial cross-sectional schematic view of a fourth embodiment of the display panel of the present disclosure.

[0039] Figure 6 It is a partial cross-sectional schematic view of a fifth embodiment of the display panel of the present disclosure.

[0040] Figure 7A partial cross-sectional schematic view of a sixth embodiment of a display panel of the present disclosure.

[0041] Figure 8 A partial cross-sectional schematic view of a seventh embodiment of a display panel of the present disclosure. DETAILED DESCRIPTION

[0042] Example embodiments now will be described more fully hereinafter with reference to the accompanying drawings; however, these embodiments can be implemented in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the example embodiments to those skilled in the art. Like reference numerals refer to like elements throughout the specification. Additionally, the drawings are merely schematic and are not drawn to scale.

[0043] The terms "one", "a", "an", "said", and "the" are used to indicate one or more elements / components / etc.; the terms "include" and "has" are used to indicate an open-ended inclusion of one or more elements / components / etc. in the thing modifying them; the terms "first", "second", and "third" etc. are used only as labels, not as limitation on quantities.

[0044] The A feature and the B feature herein "overlap" means that the A feature and the B feature at least partially coincide in the orthographic projection on a plane parallel to the driving back plate.

[0045] The embodiments of the present disclosure provide a display panel with a mirror display function, i.e. can be imaged by reflection to observe the environment, and at the same time, can also display images by self-emission. As shown in the drawings, the display panel can include a driving back plate BP, a plurality of light emitting devices LD, and an encapsulation layer TFE, wherein: Figures 2-8

[0046] The light emitting devices LD are arranged on one side of the driving back plate BP;

[0047] The encapsulation layer TFE covers the light emitting devices LD; the encapsulation layer TFE includes a first inorganic layer CVD1, a reflective layer RL, and a second inorganic layer CVD2 arranged in sequence in a direction away from the driving back plate BP; the reflective layer RL includes a plurality of first light transmission holes H1, and the first light transmission holes H1 overlap at least one light emitting device LD.

[0048] ​The display panel of the embodiment of the present disclosure has the reflective layer RL in the encapsulation layer TFE, and the ambient light can be reflected by the reflective layer RL, so that the display panel has the function of a mirror through the encapsulation layer TFE. Meanwhile, because the luminance of light of different colors attenuates at different degrees as the viewing angle increases, the displayed image will have color deviation as the viewing angle increases. If the encapsulation layer TFE directly covers the light emitting device LD, the distance between the reflective layer RL and the light emitting device LD can be reduced as much as possible under the premise of ensuring the encapsulation effect, and the smaller the distance between the first light transmission hole H1 and the light emitting device LD, the greater the exit angle of the light emitted by the light emitting device LD when the light exits from the first light transmission hole H1, which is beneficial to increasing the light intensity in a larger range, so that color deviation is less likely to occur in a larger viewing angle, thereby improving color deviation.

[0049] The display panel of the present disclosure will be described in detail as follows:

[0050] As shown in Figure 1 , the display panel can include a display area AA and a peripheral area WA outside the display area AA. The peripheral area WA can be a continuous annular area surrounding the display area AA, or a U-shaped or other shaped area. The display area AA can be used for light emission to display an image.

[0051] The driving back plate BP has a driving circuit for driving the light emitting device LD to emit light. The driving circuit can include pixel circuits located in the display area AA and peripheral circuits located in the peripheral area WA, wherein:

[0052] The number of pixel circuits is multiple, and is arrayed along the row direction and the column direction. One pixel circuit can be connected to one light emitting device LD, and of course, there can also be a case where one pixel circuit is connected to multiple light emitting devices LD, and the present document only takes the case of one-to-one correspondence between the pixel circuit and the light emitting device LD as an example for description.

[0053] The pixel circuit can include multiple transistors and capacitors, which can be 3T1C, 7T1C, 8T1C, etc. pixel circuits, and nTmC represents that one pixel circuit includes n transistors (represented by the letter “T”) and m capacitors (represented by the letter “C”).

[0054] The peripheral circuit can be connected to the pixel circuit and the light emitting device LD, and can control the current passing through the light emitting device LD through the pixel circuit, thereby controlling the luminance of the light emitting device LD. The peripheral circuit can include a gate driving circuit and a light emitting control circuit, etc., and of course, it can also include other circuits, and the specific structure of the peripheral circuit is not specially limited here.

[0055] In some embodiments of this disclosure, taking the example that the channels of each transistor in the pixel circuit are located in the same semiconductor layer, the driving backplane BP may include a substrate and a semiconductor layer, a first gate insulating layer, a first gate layer, a second gate insulating layer, a second gate layer, an interlayer dielectric layer, a first source / drain layer, a first planarization layer, a second source / drain layer, and a second planarization layer sequentially disposed in a direction away from the substrate, wherein:

[0056] The substrate can be the base for driving the backplane (BP), and can carry pixel circuits and peripheral circuits. The substrate can be a rigid or flexible structure, and can be a single-layer or multi-layer structure, without any special limitations.

[0057] The semiconductor layer may be disposed on one side of the substrate and includes the channels of each transistor in the pixel circuit; its material may be a semiconductor material such as polysilicon. A first gate insulating layer may cover the semiconductor layer; the material of the first gate insulating layer may be an insulating material such as silicon nitride or silicon oxide. A first gate layer may be disposed on the surface of the first gate insulating layer away from the substrate and includes the gate of each transistor and the first electrode of a capacitor. A second gate insulating layer may cover the first gate layer; its material may be an insulating material such as silicon nitride or silicon oxide. The second gate layer may be disposed on the surface of the second gate insulating layer away from the substrate and includes the second electrode of a capacitor; the second electrode overlaps with the first electrode to form a capacitor. An interlayer dielectric layer may cover the second gate layer; its material may include inorganic insulating materials such as silicon nitride or silicon oxide, or organic insulating materials such as insulating resin.

[0058] The first source / drain layer can be disposed on the surface of the interlayer dielectric layer away from the substrate. It can be a single layer or a multilayer structure, and its material can include one or more metals such as Ti, Al, Mg, and Ag. The first planarization layer can be disposed on the side of the first source / drain layer away from the substrate, and its material can be an insulating material such as resin. For example, the first source / drain layer can be covered with a passivation layer of insulating material such as silicon nitride, and then the passivation layer can be covered with the first planarization layer.

[0059] The second source / drain layer may be disposed on the surface of the first planarization layer away from the substrate. It may be a single-layer or multi-layer structure, and its material may include one or more metals such as Ti, Al, Mg, and Ag. The second planarization layer may cover the second source / drain layer, and its material may be an insulating material such as resin.

[0060] like Figures 2-8 As shown, each light-emitting device (LD) can be disposed on one side of the driving backplane (BP). For example, the LD can be disposed on the surface of the second planarization layer away from the substrate. Each LD is located within the display area (AA), so that the entire display area (AA) can emit light. The LD can be an OLED (Organic Light Emitting Diode), or of course, a Micro LED (Micron Light Emitting Diode), a Mini LED (Submillimeter Light Emitting Diode), or a QLED (Quantum Dot Diode), etc.

[0061] As shown in FIG. 1, in some embodiments of the present disclosure, the light emitting device LD can include a first electrode ANO, a light emitting layer EL, and a second electrode CAT stacked in a direction away from the driving backplane BP, wherein: Figures 2-8 The first electrode ANO can be disposed on a side of the driving backplane BP and arranged in an array, for example, the first electrode ANO can be disposed on a surface of the second planar layer away from the substrate. The light emitting layer EL can include at least a hole injection layer, a hole transport layer, a light emitting material layer, an electron transport layer, and an electron injection layer stacked in a direction away from the driving backplane BP. Each light emitting device LD can share the second electrode CAT, that is, the second electrode CAT can be a continuous whole layer structure, and the second electrode CAT can extend to the peripheral area WA. Each light emitting device LD can emit light independently.

[0062] As shown in FIG. 1, in some embodiments of the present disclosure, the light emitting device LD can include a first electrode ANO, a light emitting layer EL, and a second electrode CAT stacked in a direction away from the driving backplane BP, wherein:

[0063] Figures 2-8 In order to define the light emitting range of the light emitting device LD and prevent cross talk, a pixel definition layer PDL can be disposed on a surface where the first electrode ANO is disposed, and the pixel definition layer PDL can be provided with an opening PH exposing each first electrode ANO, and the light emitting layer EL is stacked with the first electrode ANO in the opening PH, so that each light emitting device LD can be separated by the pixel definition layer PDL. For example, the pixel definition layer PDL and the first electrode ANO are both disposed on a surface of the second planar layer away from the substrate, and the openings PH of the pixel definition layer PDL expose each first electrode ANO one by one. Meanwhile, the opening PH of the pixel definition layer PDL can be smaller than the first electrode ANO it exposes. The boundary of the opening PH can serve as the boundary of the light emitting device LD.

[0064] In some embodiments of the present disclosure, as shown in FIG. 1 and FIG. 2, each light emitting device LD can directly emit monochromatic light, and the light emitting colors of different light emitting devices LD can be different, for example, each light emitting device LD can be divided into three types with different light emitting colors, and the three colors can be red, green, and blue respectively. The number of the same type of light emitting device LD is multiple, and the light emitting colors are the same. Figures 2-4 Figure 8 For example, the light emitting layer EL can include a plurality of functional units arranged in an array, at least part of the area of each functional unit is located in an opening PH and in contact with the first electrode ANO. So that different light emitting devices LD can emit light of different colors. Alternatively, the light emitting material layer of the light emitting layer EL can include a plurality of material units arranged in an array, and at least part of the area of each material unit is located in an opening PH, while the hole injection layer, the hole transport layer, the electron transport layer, and the electron injection layer can adopt a whole layer structure. By using different materials for different material units, different light emitting devices LD can also emit different light.

[0065] For example, the light emitting layer EL can include a plurality of functional units arranged in an array, at least part of the area of each functional unit is located in an opening PH and in contact with the first electrode ANO. So that different light emitting devices LD can emit light of different colors. Alternatively, the light emitting material layer of the light emitting layer EL can include a plurality of material units arranged in an array, and at least part of the area of each material unit is located in an opening PH, while the hole injection layer, the hole transport layer, the electron transport layer, and the electron injection layer can adopt a whole layer structure. By using different materials for different material units, different light emitting devices LD can also emit different light.

[0066] ​​In some embodiments of the present disclosure, as shown in Figures 5-7 The light emitting color of each light emitting device LD can be the same, for example, the light emitting layer EL can also be a whole layer structure, which is stacked with the first electrode ANO within the opening PH and covers the pixel definition layer PDL, so that each light emitting device LD can share the light emitting layer EL. For example, each light emitting device LD can emit white light, and further, each light emitting device LD can include at least three light emitting material layers, each of which can emit monochromatic light, and the light emitting device LD can emit white light when each light emitting material layer emits light at the same time.

[0067] As shown in Figures 2-8 The encapsulation layer TFE is used to protect the light emitting device LD, which can include a first inorganic layer CVD1, a reflective layer RL and a second inorganic layer CVD2, wherein:

[0068] The first inorganic layer CVD1 can cover each light emitting device LD, that is, the first inorganic layer CVD1 can be covered on the surface of the second electrode CAT away from the driving backboard BP. The material of the first inorganic layer CVD1 can be silicon oxynitride, and of course, it can also be silicon nitride, silicon oxide, and other inorganic insulating materials, and can be formed by a plasma enhanced chemical vapor deposition process, and the specific process is not described here.

[0069] The reflective layer RL can be made of a light-reflecting material, such as aluminum, silver, molybdenum, and other metals. Of course, it can also be an alloy or a non-metallic material as long as it can reflect light. The reflective layer RL can be disposed on the side of the first inorganic layer CVD1 away from the driving backboard BP, and can be provided with a plurality of first light transmission holes H1, and one first light transmission hole H1 can overlap at least one light emitting device LD, so that the light emitted by the light emitting device LD can pass through the light transmission hole H1 without being completely blocked by the reflective layer RL.

[0070] In some embodiments of the present disclosure, as shown in Figures 2-8 The number of first light transmission holes H1 can be the same as the number of light emitting devices LD, and they are arranged in one-to-one correspondence, that is, the opening PH and the first light transmission hole H1 are arranged in one-to-one correspondence. Each light emitting device LD can emit light through the first light transmission hole H1 overlapping with it. At the same time, in order to avoid the reflective layer RL from blocking the light emitting device LD, the orthographic projection of the light emitting device LD on the driving backboard BP can be located within the orthographic projection of the first light transmission hole H1 overlapping with it on the driving backboard BP, that is, the orthographic projection of the reflective layer RL on the driving backboard BP is located within the orthographic projection of the pixel definition layer PDL on the driving backboard BP. For example, the orthographic projections of the opening PH and the first light transmission hole H1 can coincide, avoiding the area of the reflective layer RL being too small to reduce the effect of reflecting ambient light.

[0071] The first light-transmitting hole H1 can have the same shape as the opening PH, and both can be a polygon such as a rectangle, a rhombus, a pentagon, a hexagon, or an ellipse, without special limitation.

[0072] In some embodiments of the present disclosure, the number of first light-transmitting holes H1 can be less than the number of light-emitting devices LD, and the first light-transmitting hole H1 can be larger than the opening PH, i.e., larger than the range of the light-emitting device LD. The orthographic projection of at least two light-emitting devices LD on the drive backplane BP is located within the orthographic projection of the same first light-transmitting hole H1 on the drive backplane BP, and the orthographic projection of the reflective layer RL on the drive backplane BP is also located within the orthographic projection of the pixel definition layer PDL on the drive backplane BP. The light emitted by multiple light-emitting devices LD can exit from the same first light-transmitting hole H1.

[0073] In other embodiments of the present disclosure, the number of first light-transmitting holes H1 can be less than the number of light-emitting devices LD, but the first light-transmitting hole H1 can be arranged in one-to-one correspondence with part of the light-emitting devices LD, so that the display panel can only realize the mirror and display functions in part of the display area AA, and the other areas can only realize the display function.

[0074] The reflective layer RL of the present disclosure can reflect ambient light to achieve the effect of a mirror, and at the same time, the presence of the first light-transmitting hole H1 allows the display panel to normally emit light, so that an image can be displayed.

[0075] The second inorganic layer CVD2 can be arranged on the side of the reflective layer RL away from the drive backplane BP, for protecting the light-emitting device LD. The material of the second inorganic layer CVD2 can include inorganic insulating materials such as silicon nitride, silicon oxide, and silicon oxynitride, and can be formed by a plasma-enhanced chemical vapor deposition process, the specific process not being described in detail here. The material of the second inorganic layer CVD2 can be different from or the same as that of the first inorganic layer CVD1. For example, in some embodiments of the present disclosure, the first inorganic layer CVD1 can be silicon oxynitride, and the second inorganic layer CVD2 can be silicon nitride.

[0076] The encapsulation layer TFE will be further described below by way of example, in which each light-emitting device LD can directly emit monochromatic light:

[0077] As Figures 2-4As shown, in some embodiments of the present disclosure, the encapsulation layer TFE can further include an organic layer IJP, which can cover the reflective layer RL, and the boundary of the organic layer IJP can be limited to the inside of the boundary of the first inorganic layer CVD1 by the blocking dam located in the peripheral area WA, and the material of the organic layer IJP can adopt an organic material such as resin. The organic layer IJP with fluidity (in the manufacturing process) can achieve planarization. The second inorganic layer CVD2 can cover the organic layer IJP and the first inorganic layer CVD1 not covered by the organic layer IJP, so that the water and oxygen can be blocked by the second inorganic layer CVD2.

[0078] As shown in some embodiments of the present disclosure, the encapsulation layer TFE further includes an organic layer IJP, which can cover the reflective layer RL, and the boundary of the organic layer IJP can be limited to the inside of the boundary of the first inorganic layer CVD1 by the blocking dam located in the peripheral area WA, and the material of the organic layer IJP can adopt an organic material such as resin. The organic layer IJP with fluidity (in the manufacturing process) can achieve planarization. The second inorganic layer CVD2 can cover the organic layer IJP and the first inorganic layer CVD1 not covered by the organic layer IJP, so that the water and oxygen can be blocked by the second inorganic layer CVD2. Figure 2 and Figure 3 As shown, in some embodiments of the present disclosure, the encapsulation layer TFE further includes an organic layer IJP, which can cover the reflective layer RL, and the boundary of the organic layer IJP can be limited to the inside of the boundary of the first inorganic layer CVD1 by the blocking dam located in the peripheral area WA, and the material of the organic layer IJP can adopt an organic material such as resin. The organic layer IJP with fluidity (in the manufacturing process) can achieve planarization. The second inorganic layer CVD2 can cover the organic layer IJP and the first inorganic layer CVD1 not covered by the organic layer IJP, so that the water and oxygen can be blocked by the second inorganic layer CVD2.

[0079] The shape of the second light-transmitting hole H2 can be the same as that of the opening PH overlapping it, both of which can be polygons such as rectangle, diamond, pentagon, hexagon, etc., or can be oval, etc., which are not particularly limited here.

[0080] Further, in order to avoid the light-absorbing layer BM from blocking the light-emitting device LD, the orthographic projection of the light-emitting device LD on the driving back plate BP can be located within the orthographic projection of the second light-transmitting hole H1 overlapping it on the driving back plate BP, that is, the orthographic projection of the light-absorbing layer BM on the driving back plate BP is located within the orthographic projection of the pixel definition layer PDL on the driving back plate BP.

[0081] Further, the orthographic projection of the second light-transmitting hole H1 on the driving back plate BP is located within the orthographic projection of the first light-transmitting hole H1 overlapping it on the driving back plate BP, preventing the second light-transmitting hole H1 from being too large and limiting the range of the first light-transmitting hole H1 receiving light.

[0082] Since the reflective layer RL is close to the side of the substrate, the film layers such as the first electrode ANO can also reflect light, and the pattern of the film layers such as the first electrode ANO is relatively complex, and the degree of reflection of light is quite different. The mixed light reflected by the reflective layer RL will cause the mirror effect to be blurred. By the light-absorbing layer BM described above, at least part of the light reflected by the film layers such as the first electrode ANO can be absorbed, avoiding the mirror effect to be blurred.

[0083] To facilitate the placement of the reflective layer RL on the side of the light-absorbing layer BM away from the drive backplate BP, such as... Figure 2 As shown, in some embodiments of this disclosure, the encapsulation layer TFE may further include a first encapsulation planarization layer PLN1, which may cover the light-absorbing layer BM and fill the second light-transmitting hole H2. The surface of the first encapsulation planarization layer PLN1 away from the driving backplane BP may be planar. The reflective layer RL may be disposed on the surface of the first encapsulation planarization layer PLN1 away from the driving backplane BP, thereby avoiding the direct placement of the reflective layer RL on uneven surfaces such as the light-absorbing layer BM or the first inorganic layer CVD1, preventing problems such as breakage when forming materials such as metal on uneven surfaces, thus ensuring the continuity of the reflective layer RL. At the same time, it can also prevent the reflective layer RL from being uneven and thus not reflecting light uniformly, ensuring the uniformity of the mirror effect.

[0084] The first packaging planarization layer PLN1 is made of a transparent material. Its material can be the same as the first and second planarization layers mentioned above, or it can be different, as long as planarization can be achieved. For example, the first packaging planarization layer PLN1 can be made of a light-transmitting photoresist, formed sequentially through processes such as coating, exposure, and development.

[0085] In other embodiments of this disclosure, planarization can be achieved without the first encapsulation planarization layer PLN1 described above, such as... Figure 3 As shown, the encapsulation layer TFE may also include multiple filling portions FP, each of which can be filled into each of the second light-transmitting holes H2 in a corresponding manner. The filling portion PH is made of transparent material to ensure that the light emitted by the light-emitting device LD can pass through. At the same time, the surface of the filling portion FP away from the driving backplane BP and the surface of the light-absorbing layer BM away from the driving backplane BP can be located on the same plane. For example, the light-absorbing layer BM can be covered with a transparent filling material and filled into the second light-transmitting hole H2. Then, the filling material can be thinned by grinding or other processes until the light-absorbing layer BM is exposed, thereby achieving planarization.

[0086] The reflective layer RL can be directly disposed on the surface of the light-absorbing layer BM away from the driving backplate BP. If the second light-transmitting hole H2 is larger than the overlapping first light-transmitting hole H1, the reflective layer RL can partially extend to the surface of the filling part FP away from the driving backplate BP.

[0087] It should be noted that the plane mentioned above is not limited to a geometrically absolute plane. Due to factors such as manufacturing errors, the plane may have certain undulations.

[0088] In some embodiments of this disclosure, such as Figure 4As shown, the first encapsulation planar layer PLN1 can directly cover the first inorganic layer CVD1 to achieve planarization, and the reflective layer RL can be arranged on the surface of the first encapsulation planar layer PLN1 away from the driving back plate BP. Meanwhile, the pixel definition layer PDL can be made of black resin or other light-absorbing materials, thereby playing a similar role to the light-absorbing layer BM and also absorbing light emitted by the light-emitting device LD.

[0089] The encapsulation layer TFE will be further described below by taking the case that the light-emitting colors of the light-emitting devices LD are the same as an example:

[0090] In order to realize color display of the display panel, as shown, Figures 5-8 The encapsulation layer TFE can include a plurality of color filters CF, each of which can only transmit monochromatic light, and the colors of different color filters CF are different. One color filter CF can be arranged in the direction perpendicular to the driving back plate BP and overlap with one light-emitting device LD, and the orthographic projection of the color filter CF on the driving back plate BP at most partially overlaps with the orthographic projection of the reflective layer RL on the driving back plate BP. The white light emitted by the light-emitting device LD becomes monochromatic light after passing through the color filter CF, thereby realizing color display by cooperation of the light-emitting device LD and the color filter CF. Moreover, the color filter CF is integrated in the encapsulation layer TFE, which can minimize the distance between the color filter CF and the light-emitting device LD and reduce the limitation on the light-emitting angle of the color filter CF.

[0091] In some embodiments of the present disclosure, as shown, Figure 6 The color filter CF can be filled in the second light-transmitting hole H2 of the light-absorbing layer BM and overlap with each light-emitting device LD one by one, and the first encapsulation planar layer PLN1 can cover not only the light-absorbing layer BM but also the color filter CF.

[0092] In some embodiments of the present disclosure, as shown, Figure 5 The color filters CF can be arranged on the surface of the second encapsulation planar layer PLN2 away from the driving back plate BP. The organic layer IJP can cover the color filters CF.

[0093] In some embodiments of the present disclosure, as shown, Figure 8 For the case that each light-emitting device LD directly emits monochromatic light, the color filter CF can be used to reduce the ambient light that passes through the reflective layer RL and irradiates the reflective film layer such as the first electrode ANO, thereby reducing the reflection of the ambient light by the film layer other than the reflective layer RL, such as the first electrode ANO, which is conducive to improving the mirror effect.

[0094] In some embodiments of the present disclosure, as shown in Figure 7 The filter part CF and the separation part BMS can be arranged as a whole on the side of the packaging layer TFE away from the driving backplane BP, for example, on the surface of the second inorganic layer CVD2 away from the driving backplane BP.

[0095] In some embodiments of the present disclosure, the display panel can further include a cover plate CG, which can be made of transparent materials such as glass or acrylic. As shown in Figures 2-6 , Figure 8 If the packaging layer TFE includes the filter part CF, the cover plate CG can be directly or through an adhesive attached to the surface of the packaging layer TFE away from the driving backplane BP, for example, to the surface of the second inorganic layer CVD2 away from the driving backplane BP. As shown in Figure 7 If the filter part CF is located on the side of the packaging layer TFE away from the driving backplane BP, the cover plate CG can be directly or through an adhesive attached to the surface of the filter part CF away from the driving backplane BP. Meanwhile, the filter part CF can be separated by the separation part BMS arranged in the same layer, which is a light-transmitting structure.

[0096] It should be noted that, as shown in Figure 5 , Figure 7 and Figure 8 The range of the filter part CF can be larger than the light-emitting device LD overlapping it, that is, the boundary of the orthographic projection of the first light-transmitting hole H1 on the driving backplane BP is located inside the boundary of the orthographic projection of the filter part CF overlapping it on the driving backplane BP, so that the light emitted from the first light-transmitting hole H1 can all pass through the filter part CF without being emitted without the filter part CF.

[0097] In addition, in some embodiments of the present disclosure, as shown in Figures 2-8 The display panel can further include a protective layer SCF, which can be arranged on the side of the driving backplane BP away from the light-emitting device OLED, for example, on the surface of the substrate away from the light-emitting device LD. The protective layer can include an adhesive layer, a buffer layer and a heat dissipation layer, wherein the buffer layer can be attached to the surface of the substrate away from the light-emitting device OLD through the adhesive layer, and the heat dissipation layer can be arranged on the surface of the buffer layer away from the substrate. The adhesive layer can be made of materials with adhesive function such as grid glue, and the buffer layer can be made of flexible materials such as foam. The heat dissipation layer can be made of copper or other metal or non-metal materials with good heat conduction performance. In addition, a back film can also be attached to the surface of the substrate away from the light-emitting device LD, and the buffer layer can be attached to the surface of the back film away from the substrate through the adhesive layer. A support layer made of stainless steel or other materials can also be arranged on the side of the heat dissipation layer away from the driving backplane.

[0098] The display device of the present disclosure can be used in a rearview mirror of a car, a cosmetic mirror, and can also be used in advertisement display, etc., and the application scenarios thereof are not specially limited herein.

[0099] Other embodiments of the present disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the features disclosed herein. It is intended that the present disclosure cover any and all variations of the present disclosure including combinations of features falling within the general scope of the disclosure and including equivalents thereof. The specification and examples are to be regarded as exemplary only, and the true scope and spirit of the present disclosure shall be indicated by the appended claims.

Claims

1. A display panel, characterized in that, include: Drive backplane; Multiple light-emitting devices are arrayed on one side of the driving backplate; An encapsulation layer covers the light-emitting device; the encapsulation layer includes a first inorganic layer, a reflective layer, and a second inorganic layer sequentially distributed along a direction away from the driving backplate; the reflective layer includes a plurality of first light-transmitting holes, and the first light-transmitting holes overlap with at least one of the light-emitting devices, the orthographic projection of the light-emitting device on the driving backplate is located within the orthographic projection of the overlapping first light-transmitting hole on the driving backplate; the number of first light-transmitting holes is less than the number of light-emitting devices, and the orthographic projections of at least two of the light-emitting devices on the driving backplate are located within the orthographic projection of the same first light-transmitting hole on the driving backplate.

2. The display panel according to claim 1, characterized in that, The encapsulation layer further includes: A light-absorbing layer is disposed between the first inorganic layer and the reflective layer; the light-absorbing layer has a plurality of second light-transmitting holes, and one of the second light-transmitting holes overlaps with one of the first light-transmitting holes.

3. The display panel according to claim 2, characterized in that, The encapsulation layer further includes: A first encapsulation planarization layer covers the light-absorbing layer; the first encapsulation planarization layer is made of a transparent material; the reflective layer is disposed on the surface of the first encapsulation planarization layer away from the drive backplane.

4. The display panel according to claim 2, characterized in that, The encapsulation layer further includes: Multiple filling portions are filled into each of the second light-transmitting holes in a corresponding manner, and the filling portions are made of transparent material; the surface of the filling portion away from the driving back plate and the surface of the light-absorbing layer away from the driving back plate may be located on the same plane.

5. The display panel according to claim 3, characterized in that, The encapsulation layer further includes: Multiple light-filtering sections are filled in each of the second light-transmitting holes, and one of the light-emitting sections overlaps with one of the light-emitting devices. At least two different light-filtering sections have different colors. The first encapsulation planarization layer covers the light-filtering sections and the light-absorbing layer.

6. The display panel according to claim 2, characterized in that, The encapsulation layer further includes: An organic layer covers the reflective layer; a second inorganic layer covers the organic layer.

7. The display panel according to claim 1, characterized in that, The encapsulation layer further includes: Multiple light filters are arrayed on the side of the reflective layer away from the driving backplate, and one of the light filters overlaps with one of the light-emitting devices, and at least two different light filters have different colors.

8. The display panel according to claim 7, characterized in that, The encapsulation layer further includes: A second encapsulation planarization layer covers the reflective layer; the filter portion is disposed on the surface of the second encapsulation planarization layer away from the drive backplate.

9. The display panel according to claim 7, characterized in that, The encapsulation layer further includes: An organic layer covers each of the filter sections; a second inorganic layer covers the organic layer.

10. The display panel according to any one of claims 1-9, characterized in that, The number of the first light-transmitting holes is the same as the number of the light-emitting devices, and they overlap with each of the light-emitting devices in a one-to-one correspondence.

11. The display panel according to any one of claims 1-9, characterized in that, The material of the reflective layer includes at least one of aluminum, silver, and molybdenum.

12. The display panel according to any one of claims 1-9, characterized in that, The display panel also includes: A cover plate is attached to the surface of the encapsulation layer away from the drive backplate.

13. A display device, characterized in that, Includes the display panel as described in any one of claims 1-12.

Images