Display device

Abstract

The embodiment of the invention provides a display device, belongs to the technical field of display, and aims to solve the technical problems of low luminance of a light-emitting element and poor display effect of a display device in the prior art. The display device comprises a substrate, a light blocking piece and a light emitting element. The light blocking piece is arranged on the substrate; the light blocking piece is provided with a containing groove, and the opening area of the containing groove is gradually increased in the direction from the groove bottom of the containing groove to the groove opening of the containing groove. The light-emitting element is arranged in the accommodating groove; the first part of the light-emitting element covers the groove bottom of the containing groove, and the second part of the light-emitting element covers the side wall of the containing groove. The display device can enlarge the light-emitting area of the light-emitting element, improve the light-emitting brightness of the light-emitting element and improve the display effect of the display device.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of display, and in particular, to a display device. BACKGROUND

[0002] A display device is a common electronic output device, which can convert electronic files into graphics. The display device includes a substrate and a light-emitting element, wherein the light-emitting element can be a light-emitting diode (LED) and is arranged on the substrate, so as to emit light through the light-emitting element to display images. However, the light-emitting element has low light-emitting brightness, and the display device has poor display effect. SUMMARY

[0003] Embodiments of the present application provide a display device, which can solve the technical problem of low light-emitting brightness of the light-emitting element and poor display effect of the display device.

[0004] In a first aspect, embodiments of the present application provide a display device, comprising:

[0005] a substrate;

[0006] a light-blocking member arranged on the substrate, wherein the light-blocking member is provided with a receiving groove, and an opening area of the receiving groove gradually increases in a direction from a groove bottom of the receiving groove to a groove opening of the receiving groove;

[0007] a light-emitting element arranged in the receiving groove, wherein a first part of the light-emitting element covers the groove bottom of the receiving groove, and a second part of the light-emitting element covers a sidewall of the receiving groove.

[0008] The display device of embodiments of the present application can increase a light-emitting area of the light-emitting element by arranging the receiving groove on the light-blocking member and covering the groove bottom and the sidewall of the receiving groove with the light-emitting element, wherein the first part of the light-emitting element covers the groove bottom of the receiving groove, the second part of the light-emitting element covers the sidewall of the receiving groove, and the area of the light-emitting element is greater than the opening area of the receiving groove.

[0009] When light is needed to be emitted by the light-emitting element, the light emitted by the first part of the light-emitting element covering the groove bottom of the receiving groove is perpendicular to the substrate, and the light emitted by the second part of the light-emitting element covering the sidewall of the receiving groove intersects, and both the first part and the second part of the light-emitting element can emit light in a direction away from the substrate, thereby increasing the light-emitting brightness of the light-emitting element and improving the display effect of the display device by increasing the light-emitting area of the light-emitting element.

[0010] In some embodiments of the present application, a driving circuit layer and a connection trace are further included.

[0011] The driving circuit layer is arranged on the substrate, the driving circuit layer is arranged with the light blocking member away from the surface of the substrate, and the driving circuit layer forms the bottom of the accommodating groove;

[0012] The connecting wire is arranged outside the accommodating groove, the first end of the connecting wire is arranged on the substrate, and the second end of the connecting wire is electrically connected to the surface of the light emitting element away from the substrate.

[0013] In this way, the driving circuit layer forms the bottom of the accommodating groove, the driving circuit layer is electrically connected to the surface of the light emitting element facing the substrate, and the connecting wire is electrically connected to the surface of the light emitting element away from the substrate, so that the substrate and the light emitting element form a light emitting path through the driving circuit layer and the connecting wire. When it is necessary to emit light by using the light emitting element, the driving circuit layer and the connecting wire apply voltage to the light emitting element, so that the light emitting element can emit light in the direction away from the substrate.

[0014] In some embodiments of the present application, a conductive layer is further arranged in the accommodating groove.

[0015] The first part of the conductive layer is arranged on the bottom of the accommodating groove, the first part of the conductive layer is electrically connected to the driving circuit layer, and the first part of the conductive layer is electrically connected to the first part of the light emitting element away from the surface of the driving circuit layer.

[0016] The second part of the conductive layer is arranged on the sidewall of the accommodating groove, and the second part of the conductive layer is electrically connected to the second part of the light emitting element.

[0017] In this way, the conductive layer is arranged in the accommodating groove, the first part of the light emitting element is electrically connected to the driving circuit layer through the first part of the conductive layer, and the second part of the light emitting element is electrically connected to the driving circuit layer through the second part of the conductive layer, so that the light emitting element can be electrically connected to the driving circuit layer through the conductive layer, the voltage of the first part of the light emitting element and the second part of the light emitting element is more uniform, and the possibility of uneven light emission of the light emitting element is reduced.

[0018] In some embodiments of the present application, a reflective layer is further arranged on the side of the light emitting element facing the substrate, and the reflective layer is used to reflect light from the light emitting element.

[0019] Alternatively, the conductive layer is arranged as a conductive reflective layer, and the conductive layer is used to reflect light from the light emitting element.

[0020] In this way, when it is necessary to emit light by using the light emitting element, the light emitted by the first part of the light emitting element covering the bottom of the accommodating groove is perpendicular to the substrate, the light emitted by the second part of the light emitting element covering the sidewall of the accommodating groove intersects, and the first part and the second part of the light emitting element can emit light in the direction away from the substrate.

[0021] When the display device comprises the reflective layer, the reflective layer can be used to reflect the light from the light emitting element, the reflective layer can shield the light emitted by the light emitting element towards the substrate to some extent, reduce the influence of the light emitted by the light emitting element towards the substrate on the display effect of the display device, and improve the display effect of the display device.

[0022] When the conductive layer is set as the conductive reflective layer, the conductive reflective layer can be used to reflect the light from the light emitting element, the conductive reflective layer can shield the light emitted by the light emitting element towards the substrate to some extent, reduce the influence of the light emitted by the light emitting element towards the substrate on the display effect of the display device, and improve the display effect of the display device.

[0023] In some embodiments of the present application, the lens structure is further included;

[0024] The lens structure is arranged on the side of the light emitting element away from the substrate, and the lens structure is used to converge the light from the second part of the light emitting element to reduce the divergence angle of the light emitting element.

[0025] In this way, the light emitted by the second part of the light emitting element covering the side wall of the accommodating groove intersects, and the lens structure can be used to converge the light from the second part of the light emitting element, so that the light from the second part of the light emitting element is refracted towards the direction perpendicular to the substrate, thereby reducing the divergence angle of the light, making the light emitted by the light emitting element more concentrated, and further improving the luminous brightness of the display device.

[0026] In some embodiments of the present application, the included angle between the side wall of the accommodating groove and the thickness direction of the substrate is greater than or equal to 40 degrees;

[0027] And / or, the divergence angle of the light passing through the lens structure is less than or equal to 25 degrees.

[0028] In this way, the included angle between the side wall of the accommodating groove and the thickness direction of the substrate is less than or equal to 40 degrees, the light emitted by the second part of the light emitting element is perpendicular to the side wall of the accommodating groove, so that the included angle between the light emitted by the second part of the light emitting element and the thickness direction of the substrate is less than or equal to 50 degrees, and the light emitted by the second part of the light emitting element can pass through the lens structure.

[0029] The divergence angle of the light passing through the lens structure is less than or equal to 25 degrees, so that the light emitted by the light emitting element is more concentrated, and the luminous brightness of the display device is further improved.

[0030] In some embodiments of the present application, the light blocking member is provided with a plurality of accommodating grooves;

[0031] The number of the light emitting elements is set to be multiple, and the multiple light emitting elements are arranged in the multiple accommodating grooves; the multiple light emitting elements form a plurality of pixel units, and the pixel units include a first light emitting element, a second light emitting element, and a third light emitting element;

[0032] The display device further includes a first light filtering part, a second light filtering part, and a third light filtering part, the first light filtering part covers the surface of the first light emitting element away from the substrate, the second light filtering part covers the surface of the second light emitting element away from the substrate, and the third light filtering part covers the surface of the third light emitting element away from the substrate.

[0033] In this way, the first light filtering part covers the surface of the first light emitting element away from the substrate, the second light filtering part covers the surface of the second light emitting element away from the substrate, and the third light filtering part covers the surface of the third light emitting element away from the substrate, so that the first light emitting element, the second light emitting element, and the third light emitting element can emit light rays of different colors;

[0034] The first light emitting element, the second light emitting element, and the third light emitting element form a pixel unit, so that the pixel unit can integrate the light rays from the first light emitting element, the second light emitting element, and the third light emitting element to form a light beam of different colors.

[0035] In some embodiments of the present application, the width of the groove bottom of the accommodating groove is greater than twice the thickness of the light emitting element, and the surface of the light emitting element away from the substrate is arranged in a concave manner;

[0036] The display device further includes an insulating layer; the insulating layer is arranged on the side of the light blocking part away from the substrate, at least part of the insulating layer covers the light emitting element, and the surface of the insulating layer away from the light blocking part is parallel to the plane in which the substrate is located.

[0037] In this way, the width of the groove bottom of the accommodating groove is greater than twice the thickness of the light emitting element, the surface of the light emitting element away from the substrate is arranged in a concave manner, at least part of the insulating layer covers the light emitting element, and the surface of the insulating layer away from the light blocking part is parallel to the plane in which the substrate is located, so that the insulating layer can form a convex insulating layer, so that the light rays from the second part of the light emitting element are refracted towards the direction perpendicular to the substrate, thereby reducing the divergence angle of the light rays, so that the light rays emitted by the light emitting element are more concentrated.

[0038] In some embodiments of the present application, the width of the groove bottom of the accommodating groove is less than or equal to twice the thickness of the light emitting element;

[0039] The light emitting element includes a first functional layer, a second functional layer, and a third functional layer arranged in sequence, and the first functional layer is arranged on the side of the second functional layer facing the substrate;

[0040] The third functional layer is arranged as a conical functional layer, and the bottom surface of the conical functional layer is flush with the surface of the light-blocking member away from the substrate.

[0041] In this way, the bottom width of the accommodating groove is less than or equal to twice the thickness of the light-emitting element, and the bottom surface of the conical functional layer is flush with the surface of the light-blocking member away from the substrate, so that the light of the light-emitting element is more concentrated, the opening area of the accommodating groove is reduced, the number of light-emitting elements is increased, and the pixel density of the display device is improved.

[0042] In a second aspect, the embodiments of the present application provide a display device, comprising a substrate, a light-blocking member and a light-emitting element;

[0043] The light-blocking member is arranged on the substrate, and the light-blocking member is provided with an accommodating groove, and the opening area of the accommodating groove gradually increases in the direction from the bottom of the accommodating groove to the opening of the accommodating groove.

[0044] The light-emitting element covers the bottom and sidewall of the accommodating groove, and the area of the light-emitting element is greater than the opening area of the accommodating groove; the light emitted by the light-emitting element covering the bottom of the accommodating groove is perpendicular to the substrate, and the light emitted by the light-emitting element covering the sidewall of the accommodating groove intersects. BRIEF DESCRIPTION OF DRAWINGS

[0045] In order to more clearly illustrate the embodiments of the present application or the implementation manners in the related art, the drawings needed to be used in the embodiments or related art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0046] Figure 1 The structure schematic diagram of the display device of the embodiments of the present application;

[0047] Figure 2 The structure schematic diagram of the display device with a conductive layer of the embodiments of the present application;

[0048] Figure 3 The schematic diagram of the display device of the embodiments of the present application aiming to display the light emitted by the first part and the second part of the light-emitting element;

[0049] Figure 4 The partial structure schematic diagram of the display device with a first connection end and a second connection end of the embodiments of the present application;

[0050] Figure 5 The partial structure schematic diagram of the display device of the embodiments of the present application connecting the driving circuit layer by the connection wire;

[0051] Figure 6Structure diagram of a display device according to an embodiment of the present application, in which a reflective layer is located between a conductive layer and a driving circuit layer;

[0052] Figure 7 Structure diagram of a display device according to an embodiment of the present application, in which a reflective layer is located between a conductive layer and a light emitting element;

[0053] Figure 8 Structure diagram of a display device according to an embodiment of the present application, in which a reflective layer is located in a substrate;

[0054] Figure 9 Structure diagram of a display device according to an embodiment of the present application, in which the display device has a first filter part, a second filter part and a third filter part;

[0055] Figure 10 Structure diagram of a display device according to another embodiment of the present application.

[0056] Explanation of reference numerals:

[0057] 10, pixel unit;

[0058] 100, substrate;

[0059] 110, driving circuit layer; 111, first connection terminal; 120, conductive layer; 130, reflective layer; 140, connection trace; 141, second connection terminal;

[0060] 200, light blocking member;

[0061] 210, accommodating groove;

[0062] 300, light emitting element;

[0063] 300a, first light emitting element; 300b, second light emitting element; 300c, third light emitting element; 310, first functional layer; 320, second functional layer; 330, third functional layer; 340, first filter part; 350, second filter part; 360, third filter part;

[0064] 400, insulating layer;

[0065] 500, protective layer;

[0066] 600, lens structure. DETAILED DESCRIPTION

[0067] As described in the background, in the related art, a display device can include a substrate, a driving circuit layer, and a plurality of light emitting elements, the driving circuit layer is disposed on the substrate, a surface of the driving circuit layer facing away from the substrate is electrically connected with the light emitting elements, and the light emitting elements are driven to emit light by the driving circuit layer, so that the display device can display an image. However, since a gap needs to be left between the plurality of light emitting elements, the light emitting direction of the light emitting elements is usually parallel to the thickness direction of the substrate, so that the light emitting area of the light emitting elements is equal to the area of the light emitting elements, the light emitting brightness of the light emitting elements is low, and the display effect of the display device is poor.

[0068] Therefore, in the display device provided by the embodiments of the present application, the accommodating groove is arranged on the light blocking member, the light emitting element covers the groove bottom and the sidewall of the accommodating groove, the first part of the light emitting element covers the groove bottom of the accommodating groove, the second part of the light emitting element covers the sidewall of the accommodating groove, and the area of the light emitting element is greater than the opening area of the accommodating groove, so that the light emitting area of the light emitting element can be increased.

[0069] When it is necessary to emit light by using the light emitting element, the light emitted by the first part of the light emitting element covering the groove bottom of the accommodating groove is perpendicular to the substrate, the light emitted by the second part of the light emitting element covering the sidewall of the accommodating groove intersects, and the first part and the second part of the light emitting element can both emit light towards the direction away from the substrate, so that the light emitting brightness of the light emitting element is improved by increasing the light emitting area of the light emitting element, and the display effect of the display device is improved.

[0070] In order to make the purpose, implementation and advantages of the present application clearer, the exemplary embodiments of the present application will be described clearly and completely below in combination with the drawings of the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only a part of the embodiments of the present application, but not all the embodiments of the present application.

[0071] It should be noted that the brief description of the terms in the present application is only for the convenience of understanding the subsequently described embodiments, and is not intended to limit the embodiments of the present application. Unless otherwise specified, these terms should be understood according to their ordinary and general meanings.

[0072] In addition, the terms "comprise" and "have" and any variations thereof are intended to cover but not exclusive inclusion, for example, a product or equipment comprising a series of components does not have to be limited to the clearly listed components, but can include other components that are not clearly listed or inherent to these products or equipment.

[0073] In the description of the present application, it needs to be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0074] The terms "first", "second", and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0075] In the description of the present application, it needs to be explained that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0076] The technical solutions in the embodiments of the present application will be described clearly and completely in the following with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0077] Referring to Figures 1-3 The display device provided by the embodiments of the present application includes a substrate 100, a light-blocking piece 200 and a light-emitting element 300. The light-blocking piece 200 can be arranged on the substrate 100. The light-blocking piece 200 is provided with a receiving groove 210, which can be used to accommodate the light-emitting element 300. The light-emitting element 300 can be electrically connected to the substrate 100, so that the light-emitting element 300 can emit light in a direction away from the substrate 100.

[0078] For example, in the direction from the bottom of the receiving groove 210 to the opening of the receiving groove 210, the opening area of the receiving groove 210 can gradually increase. The side wall of the receiving groove 210 can be arranged inclinedly relative to the thickness direction of the substrate 100, and the extension direction of the side wall of the receiving groove 210 can form an included angle with the thickness direction of the substrate 100.

[0079] The first part of the light emitting element 300 can cover the groove bottom of the accommodating groove 210, and the second part of the light emitting element 300 can cover the sidewall of the accommodating groove 210. The area of the light emitting element 300 is greater than the opening area of the accommodating groove 210, so as to increase the light emitting area of the light emitting element 300. The light emitted by the first part of the light emitting element 300 covering the groove bottom of the accommodating groove 210 can be perpendicular to the substrate 100, and the light emitted by the second part of the light emitting element 300 covering the sidewall of the accommodating groove 210 can intersect with each other.

[0080] In some possible embodiments, the substrate 100 can be made of a transparent material. The substrate 100 can be configured as a flexible substrate 100, so that the display device can be used in the field of wearable devices, and the use scenarios of the display device are increased. Alternatively, the substrate 100 can also be configured as a rigid substrate 100. The rigid substrate 100 can better support and protect the light emitting element 300, and improve the stability of the display device.

[0081] The display device can further include an insulating layer 400. The insulating layer 400 can be disposed on the side of the light blocking member 200 away from the substrate 100.

[0082] At least part of the insulating layer 400 can cover the light emitting element 300, and the surface of the insulating layer 400 away from the light blocking member 200 can be parallel to the plane where the substrate 100 is located, so as to play a certain insulation and protection role on the light emitting element 300 and the light blocking member 200 through the insulating layer 400, reduce the possibility of deformation of the light emitting element 300, and reduce the possibility of short circuit between the light emitting element 300.

[0083] The insulating layer 400 can be made of a high-transmittance wide-bandgap material. For example, the insulating layer 400 can be made of one or more of aluminum oxide, silicon oxide, hafnium oxide, tantalum oxide, silicon nitride, etc.

[0084] The insulating layer 400 can be formed by one or more of magnetron sputtering, electron beam evaporation, thermal evaporation, pulsed laser deposition, chemical vapor deposition, and sol-gel method, and the present application does not make further limitation on this.

[0085] For example, referring to Figure 4 and Figure 5 The display device can further include a driving circuit layer 110. The driving circuit layer 110 can be disposed on the substrate 100, and the surface of the driving circuit layer 110 away from the substrate 100 can be provided with the light blocking member 200. The driving circuit layer 110 can form the groove bottom of the accommodating groove 210, and the driving circuit layer 110 can be electrically connected to the surface of the light emitting element 300 facing the substrate 100.

[0086] The driving circuit layer 110 can be configured as a thin-film transistor (TFT) layer. For example, the driving circuit layer 110 can be configured as one of a low-temperature polysilicon TFT, an oxide TFT, a low-temperature polysilicon oxide TFT, a CMOS driving circuit, and a MEMS driving circuit.

[0087] The display device can further include a connection wire 140. The connection wire 140 can be located outside the accommodating groove 210. A first end of the connection wire 140 can be disposed on the substrate 100, and a second end of the connection wire 140 can be electrically connected to the light emitting element 300 away from the surface of the substrate 100. The connection wire 140 can cooperate with the driving circuit layer 110 to adjust the voltage of the light emitting element 300.

[0088] At least part of the connection wire 140 can be disposed in the insulating layer 400. For example, a via hole can be formed in the insulating layer 400, and then the connection wire 140 can be formed in the via hole by deposition or the like, so that the first end of the connection wire 140 is disposed on the substrate 100, and the second end of the connection wire 140 extends away from the substrate 100, thereby realizing the forming process of the connection wire 140.

[0089] The connection wire 140 can be made of one or more of tungsten, aluminum, copper, gold, indium, or other metal materials with low resistance, or one or more of indium tin oxide (InSnO), indium zinc oxide (InZnO), or other semiconductor materials with good conductivity, so as to reduce the resistance of the connection wire 140 and improve the conductivity of the connection wire 140.

[0090] By adopting the above technical solution, the driving circuit layer 110 forms the groove bottom of the accommodating groove 210, the driving circuit layer 110 is electrically connected to the surface of the light emitting element 300 facing the substrate 100, and the connection wire 140 is electrically connected to the surface of the light emitting element 300 away from the substrate 100, so that the substrate 100 and the light emitting element 300 form a light emitting path through the driving circuit layer 110 and the connection wire 140. When it is necessary to emit light by using the light emitting element 300, the driving circuit layer 110 and the connection wire 140 apply voltage to the light emitting element 300, so that the light emitting element 300 can emit light in the direction away from the substrate 100.

[0091] It should be noted that, with reference to Figure 4 , the driving circuit layer 110 can be connected to the driving chip (not shown in the figure) of the display device through the first connection end 111, and the connection wire 140 can be connected to the driving chip of the display device through the second connection end 141, so as to adjust the voltage between the driving circuit layer 110 and the connection wire 140 through the driving chip, to realize the control of the light emitting process of the light emitting element 300.

[0092] Alternatively, referring to Figure 5 The connection wire 140 can also be electrically connected to the driving circuit layer 110. The first part of the driving circuit layer 110 is electrically connected to the surface of the substrate 100 facing the light emitting element 300, the second part of the driving circuit layer 110 is electrically connected to the surface of the substrate 100 facing away from the light emitting element 300, and the driving circuit layer 110 can be electrically connected to the driving chip of the display device, so that the driving chip can control the light emitting process of the light emitting element 300 through the first part and the second part of the driving circuit layer 110.

[0093] Referring to Figure 2 and Figure 6 In some possible embodiments, the display device can further include a conductive layer 120. The conductive layer 120 can be disposed in the accommodation groove 210.

[0094] The first part of the conductive layer 120 can be located at the bottom of the accommodation groove 210, the first part of the conductive layer 120 can be electrically connected to the driving circuit layer 110, and the first part of the conductive layer 120 is electrically connected to the first part of the light emitting element 300 facing away from the surface of the driving circuit layer 110. The second part of the conductive layer 120 can be located at the sidewall of the accommodation groove 210, and the second part of the conductive layer 120 is electrically connected to the second part of the light emitting element 300.

[0095] By adopting the above technical solutions, the first part of the light emitting element 300 is electrically connected to the driving circuit layer 110 through the first part of the conductive layer 120, and the second part of the light emitting element 300 is electrically connected to the driving circuit layer 110 through the second part of the conductive layer 120, so that the light emitting element 300 can be electrically connected to the driving circuit layer 110 through the conductive layer 120, so that the voltage of the first part of the light emitting element 300 and the second part of the light emitting element 300 is more uniform, and the possibility of uneven light emitting brightness of the light emitting element 300 is reduced.

[0096] For example, the conductive layer 120 can be made of one or more stacked structures of sulfide, graphene and other two-dimensional materials with excellent nucleation and conductivity. The conductive layer 120 can be formed on the driving circuit layer 110 by one or more of mechanical exfoliation, vapor phase epitaxy and physical deposition.

[0097] The conductive layer 120 can be treated by one or more of plasma treatment, ultraviolet ozone treatment, and annealing in a special gas environment to activate the nucleation of the conductive layer 120.

[0098] Referring to Figures 6-8In some possible embodiments, the display device can further include a reflective layer 130. The reflective layer 130 is disposed on the side of the light emitting element 300 facing the substrate 100, and is configured to reflect light from the light emitting element 300, reduce the possibility of light emitted by the light emitting element 300 passing through the substrate 100, and improve the display effect of the display device.

[0099] When light needs to be emitted by the light emitting element 300, the light emitted by the first part of the light emitting element 300 covering the bottom of the accommodating groove 210 is perpendicular to the substrate 100, and the light emitted by the second part of the light emitting element 300 covering the sidewall of the accommodating groove 210 intersects, and both the first part and the second part of the light emitting element 300 can emit light in a direction away from the substrate 100.

[0100] When the display device includes the reflective layer 130, the reflective layer 130 can be configured to reflect light from the light emitting element 300, the reflective layer 130 can shield light emitted by the light emitting element 300 towards the substrate 100, reduce the influence of light emitted by the light emitting element 300 towards the substrate 100 on the display effect of the display device, and improve the display effect of the display device.

[0101] It is easy to understand that, with reference to Figure 6 , the reflective layer 130 can be disposed between the conductive layer 120 and the driving circuit layer 110. Alternatively, with reference to Figure 7 , the reflective layer 130 can be disposed between the light emitting element 300 and the conductive layer 120. Alternatively, with reference to Figure 8 , the reflective layer 130 can be disposed in the substrate 100.

[0102] For example, the conductive layer 120 can be configured as a conductive reflective layer 130. The conductive layer 120 is configured to reflect light from the light emitting element 300, reduce the possibility of light emitted by the light emitting element 300 passing through the substrate 100, and improve the display effect of the display device.

[0103] When the conductive layer 120 is configured as the conductive reflective layer 130, the conductive reflective layer 130 can be configured to reflect light from the light emitting element 300, the conductive reflective layer 130 can shield light emitted by the light emitting element 300 towards the substrate 100, reduce the influence of light emitted by the light emitting element 300 towards the substrate 100 on the display effect of the display device, and improve the display effect of the display device.

[0104] With reference to Figure 1 , in some possible embodiments, the light blocking member 200 can be configured to prevent light crosstalk between the plurality of light emitting elements 300, and improve the display effect of the display device. For example, the light blocking member 200 can be made of one or more of metal, semiconductor, or resin materials.

[0105] The number of light-blocking pieces 200 can be set to one or more. When the number of light-blocking pieces 200 is set to multiple, the multiple light-blocking pieces 200 are arranged in the same layer. Different light-blocking layers can be made of the same material, or different light-blocking pieces 200 can be made of different materials.

[0106] The light-blocking piece 200 can be made by one or more of physical deposition, chemical deposition, dispensing, spraying, inkjet, etc. When the number of light-blocking pieces 200 is set to multiple, different light-blocking layers can be made by the same method once or multiple times, or different light-blocking pieces 200 can be made by different methods.

[0107] For example, an initial light-blocking layer can be formed on the surface of the substrate 100 by deposition, etc. The initial light-blocking layer can cover the driving circuit layer 110. Then, part of the initial light-blocking layer can be removed by etching, etc. The remaining part of the initial light-blocking layer forms the light-blocking piece 200, which is provided with the receiving groove 210.

[0108] It is easy to understand that, in the process of removing part of the initial light-blocking layer by etching, etc., the opening area of the receiving groove 210 can gradually increase in the direction from the groove bottom to the groove opening of the receiving groove 210, so that the process of etching and removing the initial light-blocking layer is more convenient, and the forming process of the light-blocking piece 200 is more convenient.

[0109] For example, the light-blocking piece 200 can be provided with multiple receiving grooves 210. The number of light-emitting elements 300 is set to multiple, and the multiple light-emitting elements 300 are arranged in the multiple receiving grooves 210. Each receiving groove 210 can accommodate one light-emitting element 300, so that multiple light-emitting elements 300 can be accommodated by the light-blocking piece 200, the multiple light-emitting elements 300 can be separated, and the possibility of mutual interference of the light emitted by the multiple light-emitting elements 300 can be reduced.

[0110] The angle between the side wall of the receiving groove 210 and the thickness direction of the substrate 100 can be greater than or equal to 40 degrees. The light emitted by the second part of the light-emitting element 300 is perpendicular to the side wall of the receiving groove 210, so that the angle between the light emitted by the second part of the light-emitting element 300 and the thickness direction of the substrate 100 is less than or equal to 50 degrees, thereby reducing the divergence angle of the light emitted by the light-emitting element 300.

[0111] Referring to Figure 9 In some possible embodiments, the multiple light-emitting elements 300 can form a plurality of pixel units 10. The pixel unit 10 can include a first light-emitting element 300a, a second light-emitting element 300b, and a third light-emitting element 300c, so that the pixel unit 10 can integrate the light from the first light-emitting element 300a, the second light-emitting element 300b, and the third light-emitting element 300c to form light beams of different colors.

[0112] For example, the first light emitting element 300a can emit a first light beam, the second light emitting element 300b can emit a second light beam, and the third light emitting element 300c can emit a third light beam.

[0113] The first light emitting element 300a can be configured as a red light emitting element 300, and the first light beam can be configured as a red light beam. The second light emitting element 300b can be configured as a green light emitting element 300, and the second light beam can be configured as a green light beam. The third light emitting element 300c can be configured as a blue light emitting element 300, and the third light beam can be configured as a blue light beam, so that the pixel unit 10 can form a combined light beam of different colors by adjusting the brightness of the red light beam, the green light beam, and the blue light beam.

[0114] The sizes of the first light emitting element 300a, the second light emitting element 300b, and the third light emitting element 300c can be the same within the same pixel unit 10. Alternatively, the sizes of the first light emitting element 300a, the second light emitting element 300b, and the third light emitting element 300c can be different within the same pixel unit 10. For example, the size of the first light emitting element 300a can be greater than the size of the second light emitting element 300b, and the size of the second light emitting element 300b can be greater than the size of the third light emitting element 300c.

[0115] Referring to Figure 9 In some possible embodiments, the display device can further include a first filter portion 340, a second filter portion 350, and a third filter portion 360.

[0116] The first filter portion 340 covers the surface of the first light emitting element 300a facing away from the substrate 100, and the first filter portion 340 can be configured as a red filter portion. The red filter portion can be a red quantum dot layer, so that the red light beam emitted by the first light emitting element 300a can pass through the first filter portion 340.

[0117] The second filter portion 350 covers the surface of the second light emitting element 300b facing away from the substrate 100, and the second filter portion 350 can be configured as a green filter portion. The green filter portion can be a green quantum dot layer, so that the green light beam emitted by the second light emitting element 300b can pass through the second filter portion 350.

[0118] The third filter portion 360 covers the surface of the third light emitting element 300c facing away from the substrate 100, and the third filter portion 360 can be configured as a blue filter portion. The blue filter portion can be a blue quantum dot layer, so that the blue light beam emitted by the third light emitting element 300c can pass through the third filter portion 360.

[0119] For example, the first light emitting element 300a, the second light emitting element 300b and the third light emitting element 300c can emit white light beams.

[0120] The first filter part 340 covers a surface of the first light emitting element 300a facing away from the substrate 100, and the first filter part 340 can be configured as a red filter part to allow the white light beam emitted by the first light emitting element 300a to pass through the first filter part 340 to form a red light beam.

[0121] The second filter part 350 covers a surface of the second light emitting element 300b facing away from the substrate 100, and the second filter part 350 can be configured as a green filter part to allow the white light beam emitted by the second light emitting element 300b to pass through the second filter part 350 to form a green light beam.

[0122] The third filter part 360 covers a surface of the third light emitting element 300c facing away from the substrate 100, and the third filter part 360 can be configured as a blue filter part to allow the white light beam emitted by the third light emitting element 300c to pass through the third filter part 360 to form a blue light beam.

[0123] The thickness of the first filter part 340, the second filter part 350 and the third filter part 360 can be the same. Alternatively, the thickness of the first filter part 340, the second filter part 350 and the third filter part 360 can be different, and the thickness of the first filter part 340 can be greater than the thickness of the second filter part 350.

[0124] Referring to Figure 6 In some possible embodiments, the light emitting element 300 can include a first functional layer 310, a second functional layer 320 and a third functional layer 330 which are sequentially stacked. The first functional layer 310 can be disposed on a side of the second functional layer 320 facing the substrate 100, and a surface of the second functional layer 320 facing away from the substrate 100 is connected to the third functional layer 330.

[0125] For example, the first functional layer 310 can be configured as a first semiconductor layer, the second functional layer 320 can be configured as an active layer, and the third functional layer 330 can be configured as a second semiconductor layer.

[0126] The first functional layer 310, the second functional layer 320 and the third functional layer 330 can be made by one or more of the following processes or devices: chemical vapor deposition (CVD), metal-organic chemical vapor deposition (MOCVD), plasma-enhanced chemical vapor deposition (PECVD), molecular beam epitaxy (MBE), etc.

[0127] The surface of the first functional layer 310 facing away from the second functional layer 320 can be electrically connected to the driving circuit layer 110 through the conductive layer 120, and the surface of the third functional layer 330 facing away from the second functional layer 320 can be electrically connected to the connecting wire 140, so that light emitted by the light emitting element 300 can be realized through the cooperation of the first functional layer 310, the second functional layer 320 and the third functional layer 330.

[0128] The thickness of the first functional layer 310 can be greater than at least one of the thickness of the active layer and the thickness of the second functional layer 320, so as to improve the forming quality of the light emitting element 300, reduce the possibility of internal defects of the light emitting element 300, and improve the light emitting efficiency of the light emitting element 300.

[0129] For example, referring to Figure 6 , the width of the groove bottom of the accommodating groove 210 can be greater than twice the thickness of the light emitting element 300, and the surface of the light emitting element 300 facing away from the substrate 100 can be concave. For example, the groove bottom of the accommodating groove 210 can be provided as a circular groove bottom, and the diameter of the circular groove bottom is greater than twice the thickness of the light emitting element 300, and the surface of the third functional layer 330 facing away from the second functional layer 320 is concave.

[0130] It is easy to understand that the width of the groove bottom of the accommodating groove 210 is greater than twice the thickness of the light emitting element 300, the surface of the light emitting element 300 facing away from the substrate 100 is concave, at least part of the insulating layer 400 covers the light emitting element 300, the surface of the insulating layer 400 facing away from the light blocking member 200 is parallel to the plane where the substrate 100 is located, and the insulating layer 400 can form a convex insulating layer 400, so that the light from the second part of the light emitting element 300 is refracted towards the direction perpendicular to the substrate 100, thereby reducing the divergence angle of the light, so that the light emitted by the light emitting element 300 is more concentrated.

[0131] In the first filter part 340, the second filter part 350 and the third filter part 360, the first filter part 340 can be disposed in the accommodating groove 210, the first filter part 340 can cover the surface of the first light emitting element 300a facing away from the substrate 100, and the surface of the first filter part 340 facing away from the second light emitting element 300b can be connected to the insulating layer 400.

[0132] The second filter part 350 can be disposed in the accommodating groove 210, the second filter part 350 can cover the surface of the second light emitting element 300b facing away from the substrate 100, and the surface of the second filter part 350 facing away from the second light emitting element 300b can be connected to the insulating layer 400.

[0133] The third filter part 360 can be disposed in the accommodating groove 210, the third filter part 360 can cover the surface of the third light emitting element 300c facing away from the substrate 100, and the surface of the third filter part 360 facing away from the third light emitting element 300c can be connected to the insulating layer 400.

[0134] For example, referring to Figure 10 , the groove bottom width of the accommodating groove 210 is less than or equal to twice the thickness of the light emitting element 300. The third functional layer 330 can be disposed as a conical functional layer, and the conical bottom surface of the conical functional layer is flushly disposed on the surface of the light blocking member 200 facing away from the substrate 100.

[0135] The groove bottom width of the accommodating groove 210 is less than or equal to twice the thickness of the light emitting element 300, and the conical bottom surface of the conical functional layer is flushly disposed on the surface of the light blocking member 200 facing away from the substrate 100, so that the light of the light emitting element 300 is more concentrated, and the opening area of the accommodating groove 210 can be reduced, the number of light emitting elements 300 can be increased, and the pixel density of the display device can be improved.

[0136] In the first filter part 340, the second filter part 350 and the third filter part 360, the first filter part 340 can be disposed outside the accommodating groove 210, the first filter part 340 can cover the surface of the first light emitting element 300a facing away from the substrate 100, and the surface of the first filter part 340 facing away from the second light emitting element 300b can be connected to the insulating layer 400.

[0137] The second filter part 350 can be disposed outside the accommodating groove 210, the second filter part 350 can cover the surface of the second light emitting element 300b facing away from the substrate 100, and the surface of the second filter part 350 facing away from the second light emitting element 300b can be connected to the insulating layer 400.

[0138] The third filter part 360 can be disposed outside the accommodating groove 210, the third filter part 360 can cover the surface of the third light emitting element 300c facing away from the substrate 100, and the surface of the third filter part 360 facing away from the third light emitting element 300c can be connected to the insulating layer 400.

[0139] In some possible embodiments, the surface of the insulating layer 400 away from the substrate 100 can be provided with a protective layer 500. The protective layer 500 can insulate and protect the light-emitting element 300 and the light-blocking piece 200, and reduce the possibility of deformation of the light-emitting element 300 and the possibility of short circuit between the light-emitting elements 300.

[0140] The protective layer 500 can be made of a high-transmittance wide-bandgap material. For example, the protective layer 500 can be made of one or more of aluminum oxide, silicon oxide, hafnium oxide, tantalum oxide, and silicon nitride.

[0141] The protective layer 500 can be formed by one or more of magnetron sputtering, electron beam evaporation, thermal evaporation, pulsed laser deposition, chemical vapor deposition, and sol-gel method, and the present application does not make further limitations in this regard.

[0142] In some possible embodiments, referring to Figure 3 and Figure 4 , the display device can further include a lens structure 600. The lens structure 600 can be arranged on the side of the light-emitting element 300 away from the substrate 100, and the lens structure 600 is used to converge the light from the second part of the light-emitting element 300, so as to reduce the divergence angle of the light-emitting element 300.

[0143] For example, the included angle between the sidewall of the accommodating groove 210 and the thickness direction of the substrate 100 can be greater than or equal to 40 degrees, so that the divergence angle of the light can be constrained within ±50°, and the divergence angle of the light passing through the lens structure 600 can be less than or equal to 25 degrees, and the divergence angle can be further constrained within ±25°, so that the light efficiency and other performances of the display device can be improved by more than 50%.

[0144] For example, the lens structure 600 can be made of polymethyl methacrylate (PMMA), negative photoresist (SU-8), or other organic glue materials or high-refractive inorganic materials with excellent light transmittance, such as silicon oxide and silicon nitride. The lens structure 600 can be made by one or more of sol-gel method, vapor deposition method, and physical deposition method.

[0145] In summary, by arranging the accommodating groove 210 on the light-blocking piece 200, covering the groove bottom and the sidewall of the accommodating groove 210 with the light-emitting element 300, covering the groove bottom of the accommodating groove 210 with the first part of the light-emitting element 300, covering the sidewall of the accommodating groove 210 with the second part of the light-emitting element 300, and making the area of the light-emitting element 300 greater than the opening area of the accommodating groove 210, the light-emitting area of the light-emitting element 300 can be increased.

[0146] When light needs to be emitted by the light emitting element 300, the light emitted by the first part of the light emitting element 300 covering the groove bottom of the accommodating groove 210 is perpendicular to the substrate 100, and the light emitted by the second part of the light emitting element 300 covering the sidewall of the accommodating groove 210 intersects, and both the first part and the second part of the light emitting element 300 can emit light in a direction away from the substrate 100, thereby increasing the light emitting area of the light emitting element 300 and improving the display effect of the display device.

[0147] Compared with the conventional planar arrangement of the light emitting element 300, the display device of the embodiment of the present application can have a larger light emitting area of the light emitting element 300 under the same display device size, which can help to improve the light emitting brightness of the light emitting element, especially in the field of micro display; and can have a smaller pixel pitch, which can significantly improve the pixel density of the display device.

[0148] The embodiment of the present application provides a display device, which comprises a substrate 100, a light blocking piece 200 and a light emitting element 300; the light blocking piece 200 is arranged on the substrate 100; the light blocking piece 200 is provided with an accommodating groove 210, and the opening area of the accommodating groove 210 gradually increases in the direction from the groove bottom to the groove opening of the accommodating groove 210.

[0149] The light emitting element 300 covers the groove bottom and the sidewall of the accommodating groove 210, and the area of the light emitting element 300 is larger than the opening area of the accommodating groove 210; the light emitted by the light emitting element 300 covering the groove bottom of the accommodating groove 210 is perpendicular to the substrate 100, and the light emitted by the light emitting element 300 covering the sidewall of the accommodating groove 210 intersects.

[0150] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

[0151] For the convenience of explanation, the above description has been made in combination with specific embodiments. However, the above exemplary discussion is not intended to exhaust or limit the embodiments to the specific forms disclosed above. Various modifications and variations can be derived according to the above teachings. The selection and description of the above embodiments are for better explanation of the principles and practical applications, so that those skilled in the art can better use the embodiments and various different modified embodiments suitable for specific use considerations.

Claims

1. A display device, characterized in that: include: substrate; a light blocking member disposed on the substrate; The light blocking member is provided with a receiving groove, and the opening area of ​​the receiving groove gradually increases in the direction from the bottom of the receiving groove to the groove opening of the receiving groove; A light-emitting element is disposed in the receiving groove; a first portion of the light-emitting element covers the bottom of the receiving groove, and a second portion of the light-emitting element covers the sidewall of the receiving groove.

2. The display device according to claim 1, wherein It also includes the driver circuit layer and connecting traces; The driving circuit layer is provided on the substrate, the light blocking member is provided on the surface of the driving circuit layer facing away from the substrate, and the driving circuit layer forms the bottom of the receiving groove; The connecting wire is located outside the receiving groove; a first end of the connecting wire is provided on the substrate, and a second end of the connecting wire is electrically connected to a surface of the light emitting element facing away from the substrate.

3. The display device according to claim 2, wherein: It also includes a conductive layer, and the conductive layer is disposed in the receiving groove; The first portion of the conductive layer is located at the bottom of the receiving groove, the first portion of the conductive layer is electrically connected to the driving circuit layer, and the surface of the first portion of the conductive layer facing away from the driving circuit layer is electrically connected to the first portion of the light-emitting element; The second portion of the conductive layer is located on a sidewall of the receiving groove, and the second portion of the conductive layer is electrically connected to the second portion of the light-emitting element.

4. The display device according to claim 3, wherein: The device further comprises a reflective layer, the reflective layer being arranged on a side of the light emitting element facing the substrate, the reflective layer being used to reflect light from the light emitting element; Alternatively, the conductive layer is configured as a conductive reflective layer, and the conductive layer is used to reflect light from the light-emitting element.

5. The display device according to claim 1, wherein Also includes lens structure; The lens structure is arranged on a side of the light emitting element away from the substrate, and the lens structure is used to converge the light from the second portion of the light emitting element to reduce the divergence angle of the light emitting element.

6. The display device according to claim 5, wherein: The angle between the sidewall of the receiving groove and the thickness direction of the substrate is greater than or equal to 40 degrees; And / or, the divergence angle of the light passing through the lens structure is less than or equal to 25 degrees.

7. The display device according to claim 1, wherein The light blocking member is provided with a plurality of accommodating grooves; The number of the light-emitting elements is set to be multiple, and the multiple light-emitting elements are arranged in the multiple receiving grooves; the multiple light-emitting elements form a plurality of pixel units, and the pixel units include a first light-emitting element, a second light-emitting element and a third light-emitting element; The display device also includes a first filter portion, a second filter portion and a third filter portion, the first filter portion covers the surface of the first light-emitting element facing away from the substrate, the second filter portion covers the surface of the second light-emitting element facing away from the substrate, and the third filter portion covers the surface of the third light-emitting element facing away from the substrate.

8. The display device according to any one of claims 1 to 7, characterized in that: The bottom width of the receiving groove is greater than twice the thickness of the light-emitting element, and the light-emitting element is concavely arranged on a surface away from the substrate; The display device further includes an insulating layer; the insulating layer is arranged on a side of the light blocking member away from the substrate, at least partially covering the light emitting element, and a surface of the insulating layer away from the light blocking member is parallel to the plane of the substrate.

9. The display device according to any one of claims 1 to 7, characterized in that: The bottom width of the receiving groove is less than or equal to twice the thickness of the light emitting element; The light-emitting element comprises a first functional layer, a second functional layer and a third functional layer stacked in sequence, wherein the first functional layer is arranged on a side of the second functional layer facing the substrate; The third functional layer is configured as a conical functional layer, and the conical bottom surface of the conical functional layer is configured flush with the surface of the light blocking member facing away from the substrate.

10. A display device, characterized in that: comprising a substrate, a light blocking member and a light emitting element; The light blocking member is provided on the substrate; the light blocking member is provided with a receiving groove, and the opening area of ​​the receiving groove gradually increases in the direction from the bottom of the receiving groove to the groove opening of the receiving groove; The light-emitting element covers the bottom and sidewalls of the receiving groove, and the area of ​​the light-emitting element is larger than the opening area of ​​the receiving groove; The light emitted by the light emitting element covering the bottom of the receiving groove is perpendicular to the substrate, and the light emitted by the light emitting element covering the sidewall of the receiving groove intersects with the substrate.

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