Display substrate, manufacturing method thereof and display panel

Abstract

The invention relates to a display substrate, a manufacturing method thereof and a display panel. The display substrate includes: a substrate; the electrodes are arranged on one side of the substrate in an array mode; the multiple light-emitting elements are located on the sides, away from the substrate, of the multiple electrodes, and the light-emitting elements are electrically connected with the corresponding electrodes; the quantum dot layer is positioned on one side, far away from the substrate, of the plurality of light-emitting elements; the protection layer is located on the side, away from the substrate, of the quantum dot layer, and the protection layer is made of a light-transmitting material. The display panel is simple in structure, and the color saturation of the display panel can be improved.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display substrate and a manufacturing method thereof, and a display panel. Background Art

[0002] Liquid Crystal Display (LCD) has the advantages of light weight, thin thickness, low power consumption, easy to drive, and no harmful rays. It has been widely used in modern information devices such as televisions, laptops, mobile phones, personal digital assistants, and has broad development prospects. Since LCD itself does not emit light, it is necessary to couple external light sources to achieve display. The backlight module is a light source located behind the LCD. The liquid crystal display panel is based on the light emitted by the backlight module to penetrate the liquid crystal layer and control the twisting of liquid crystal molecules to display images. However, the existing backlight module structure is complex and limits the color saturation improvement of the display panel.

[0003] Transparent display is a technology with a wide demand. It can be used in applications such as vehicle-mounted display, window display, home display, wearable display, etc., which require both displaying images and seeing the scenery behind the screen. In the prior art, transparent display can be achieved with the help of a liquid crystal layer formed by a composite of polymer and liquid crystal (such as polymer network stabilized liquid crystal (PSLC) or polymer dispersed liquid crystal (PDLC)). When the transparent display screen needs to display, a voltage is applied to the display area of ​​the liquid crystal layer to deflect the liquid crystal and scatter light to achieve the display function. When the screen does not need to display, no voltage is applied to both sides of the liquid crystal layer. This panel usually includes a structure of two substrates and a liquid crystal layer sandwiched between the two substrates. However, the transparent display panel in the prior art has a complex structure and limits the improvement of the color saturation of the display panel.

[0004] Therefore, in order to address the problem that the backlight module in the liquid crystal display panel in the prior art has a complex structure and limits the improvement of the color saturation of the display panel, and the problem that the transparent display panel in the prior art has a complex structure and limits the improvement of the color saturation of the display panel, it is necessary to provide a new display substrate. Summary of the invention

[0005] Based on this, it is necessary to provide a new display substrate and its manufacturing method, and a display panel to address the problem that the backlight module structure in the liquid crystal display panel in the prior art is complex and limits the color saturation improvement of the display panel, and the problem that the transparent display panel in the prior art has a complex structure and limits the color saturation improvement of the display panel.

[0006] According to a first aspect of the present application, a display substrate is provided, comprising:

[0007] substrate;

[0008] A plurality of electrodes are arranged in an array on one side of the substrate;

[0009] A plurality of light-emitting elements are located on a side of the plurality of electrodes away from the substrate, and the light-emitting elements are electrically connected to the corresponding electrodes;

[0010] A quantum dot layer, located on a side of the plurality of light-emitting elements away from the substrate;

[0011] The protective layer is located on a side of the quantum dot layer away from the substrate, and the protective layer is a light-transmitting material.

[0012] In some embodiments, it further comprises:

[0013] The first encapsulation layer is at least located on a side of the protection layer away from the substrate, and the first encapsulation layer comprises a material different from that of the protection layer.

[0014] In some embodiments, the display substrate includes a display area and a non-display area, and the protection layer contacts the base in the non-display area.

[0015] In some embodiments, the display substrate includes a display area and a non-display area, and the first encapsulation layer covers the protection layer and contacts the base in the non-display area.

[0016] In some embodiments, it further comprises:

[0017] The second encapsulation layer is at least located on a side of the substrate away from the light-emitting element.

[0018] In some embodiments, the first encapsulation layer and the second encapsulation layer are in contact with each other in the non-display area or at a side surface of the substrate, and the first encapsulation layer and the second encapsulation layer are made of the same material and are an integrally formed structure.

[0019] In some embodiments, the display substrate is a transparent display substrate;

[0020] The substrate, the protective layer, the first encapsulation layer and the second encapsulation layer are all made of light-transmitting materials.

[0021] According to a second aspect of the present application, a display panel is provided, comprising any one of the display substrates described above.

[0022] According to a third aspect of the present application, a method for manufacturing a display substrate is provided, comprising:

[0023] providing a substrate;

[0024] forming a plurality of electrodes on one side of the substrate;

[0025] A plurality of light-emitting elements are formed on a side of the plurality of electrodes away from the substrate, wherein the light-emitting elements are electrically connected to the corresponding electrodes;

[0026] forming a quantum dot layer on a side of the plurality of light-emitting elements away from the substrate;

[0027] A protective layer is formed on a side of the quantum dot layer away from the substrate, and the protective layer is a light-transmitting material.

[0028] In some embodiments, it further comprises:

[0029] forming a first encapsulation layer, wherein the first encapsulation layer is at least located on a side of the protective layer away from the substrate;

[0030] A second encapsulation layer is formed, wherein the second encapsulation layer is at least located on a side of the substrate away from the light-emitting element.

[0031] In the embodiment of the present application, a plurality of electrodes are located on one side of the substrate; a plurality of light-emitting elements are located on a side of the plurality of electrodes away from the substrate 11, and the light-emitting elements are electrically connected to the corresponding electrodes; a quantum dot layer is located on a side of the plurality of light-emitting elements away from the substrate; a protective layer is located on a side of the quantum dot layer away from the substrate, and the protective layer is a light-transmitting material, and the plurality of light-emitting elements may be any one of an organic light-emitting diode (OLED light-emitting device), an LED (light-emitting diode), a MiniLED (Mini Light Emitting Diode), a Micro LED (Micro Light Emitting Diode), and an integrated circuit light-emitting diode (IC LED for short). Therefore, compared with the prior art, in the display substrate of the present application, the light emitted by the light-emitting element passes through the quantum dot layer, and then is emitted from the side of the quantum dot layer away from the substrate to the human eye, and the quantum dot layer excites and generates light of more colors, thereby improving the color saturation of the display substrate. In the display substrate of the present application, the structure is simple, so that the drive can also be simplified. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments or exemplary embodiments of the present application, the drawings required for use in the description of the embodiments or exemplary embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1A schematic diagram of a first cross-sectional structure of a display substrate provided in some embodiments of the present application.

[0034] Figure 2 A schematic diagram of a second cross-sectional structure of a display substrate provided in some embodiments of the present application.

[0035] Figure 3 A third cross-sectional structural schematic diagram of a display substrate provided in some embodiments of the present application.

[0036] Figure 4 A fourth cross-sectional structural schematic diagram of a display substrate provided in some embodiments of the present application.

[0037] Figure 5 A fifth cross-sectional structural schematic diagram of a display substrate provided in some embodiments of the present application.

[0038] Figure 6 A schematic diagram of a display panel provided for some embodiments of the present application.

[0039] Figure 7 A schematic diagram of a first process step of a method for manufacturing a display substrate provided in some embodiments of the present application.

[0040] Figure 8 A schematic diagram of a second process step of a method for manufacturing a display substrate provided in some embodiments of the present application.

[0041] Fig. 9 A third process step schematic diagram of a method for manufacturing a display substrate provided in some embodiments of the present application. DETAILED DESCRIPTION

[0042] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0043] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0044] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0045] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0046] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0047] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0048] In the prior art, the backlight module in the liquid crystal display panel has a complex structure and limits the color saturation improvement of the display panel. The transparent display panel has a complex structure and limits the color saturation improvement of the display panel.

[0049] Based on the above problems, the present application provides a new display substrate and a manufacturing method thereof, and a display panel.

[0050] Figure 1 A schematic diagram of a first cross-sectional structure of a display substrate provided in some embodiments of the present application. Figure 2 A schematic diagram of a second cross-sectional structure of a display substrate provided in some embodiments of the present application. Figure 3 A third cross-sectional structural schematic diagram of a display substrate provided in some embodiments of the present application. Figure 4 A fourth cross-sectional structural schematic diagram of a display substrate provided in some embodiments of the present application. Figure 5 A fifth cross-sectional structural schematic diagram of a display substrate provided in some embodiments of the present application.

[0051] First, see Figures 1 to 5 The present application provides a display substrate 100, which includes a substrate 11, a plurality of electrodes 12, a plurality of light-emitting elements 131, a quantum dot layer 14, and a protective layer 15. The plurality of electrodes 12 are arranged in an array on one side of the substrate 11; the plurality of light-emitting elements 131 are located on a side of the plurality of electrodes 12 away from the substrate 11, and the light-emitting elements 131 are electrically connected to the corresponding electrodes 12; the quantum dot layer 14 is located on a side of the plurality of light-emitting elements 131 away from the substrate 11; the protective layer 15 is located on a side of the quantum dot layer 14 away from the substrate 11, and the protective layer 15 is a light-transmitting material.

[0052] For example, the plurality of electrodes 12 , the plurality of light emitting elements 131 , the quantum dot layer 14 and the protective layer 15 are located on the same side of the substrate 11 .

[0053] For example, the material of the substrate 11 can be glass, polyimide (PI), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), plastic, or metal, and the material of the substrate 11 is not limited herein.

[0054] For example, a plurality of electrodes 12 are arrayed on one side of the substrate 11, and the plurality of electrodes 12 may include a plurality of first electrodes and a plurality of second electrodes, and the first electrodes and the second electrodes are electrically connected to the anode and cathode of the corresponding light emitting element 131, respectively. Figures 1 to 5 Only one of the first electrode and the second electrode is illustrated in FIG.

[0055] For example, multiple signal lines can be set on one side of the substrate 11, and the multiple signal lines can provide corresponding electrical signals for the corresponding first electrodes and the second electrodes. The electrical signals are then transmitted to the corresponding light-emitting elements 131 through the first electrodes and the second electrodes to drive the corresponding light-emitting elements 131 to emit light.

[0056] For example, the light emitted by the corresponding light-emitting element 131 passes through the quantum dot layer 14 and then is emitted to the human eye from the side of the quantum dot layer 14 away from the substrate 11 . The quantum dot layer 14 excites and generates light of more colors, thereby improving the color saturation of the display substrate 100 .

[0057] By way of example, the plurality of light-emitting elements 131 may be any one of an organic light-emitting diode (OLED), an LED (light-emitting diode), a MiniLED (Mini Light Emitting Diode), a Micro LED (Micro Light Emitting Diode), and an integrated circuit light-emitting diode (IC LED for short).

[0058] For example, when the multiple light-emitting elements 131 are MiniLED (Mini Light Emitting Diode) or Micro LED (Micro Light Emitting Diode), the multiple light-emitting elements 131 can be manufactured on the corresponding first electrode and the second electrode through processes such as mass transfer, and the light-emitting elements 131 can be electrically connected to the corresponding first electrode and the second electrode through bonding metals such as solder.

[0059] For example, Figure 1Schematically, the light-emitting functional layer 13 is located on one side of the substrate 11 , and the light-emitting functional layer 13 includes a plurality of light-emitting elements 131 .

[0060] For example, the quantum dot layer 14 can be synthesized by processes such as chemical colloidal method, self-assembly method, lithography and etching, etc. By chemical colloidal method, multilayered quantum dots can be produced. The self-assembly method can adopt chemical vapor deposition process. In addition, quantum dots grow by self-aggregation on the surface of a specific substrate, and regularly arranged quantum dots can be mass-produced. Lithography and etching uses a light beam or electron beam to directly etch the desired pattern on the substrate. The synthesis method and formation method of the quantum dot layer 14 are not limited here.

[0061] For example, in some implementations, the quantum dot layer 14 has a light color of red, green, blue stack or any combination of colors, wherein the light emitted by the light-emitting element 131 enters the quantum dot layer 14 to excite the quantum dots to form a color with a full color spectrum.

[0062] For example, in some implementations, the light-emitting element 131 emits blue light, the quantum dot layer 14 has red quantum dot materials and green quantum electrical materials, some of the blue light emitted by the light-emitting element 131 is excited to produce red light after passing through the red quantum dot material, and some of the blue light emitted by the light-emitting element 131 is excited to produce green light after passing through the green quantum dot material, thereby achieving a color display of the three primary colors of red, green and blue, and can also mix colors to produce white light.

[0063] For example, the protective layer 15 is a light-transmitting material so that the light emitted by the light-emitting element 131 can penetrate the protective layer 15 and then be emitted to the human eye.

[0064] For example, the material of the protection layer 15 may be an inorganic material, for example, the material of the protection layer 15 includes at least one of silicon nitride (SiNx) and silicon oxide (SiOx).

[0065] For example, the material of the protective layer 15 may be an organic material. For example, the material of the protective layer 15 includes at least one of polyimide (PI for short), an optical adhesive layer, and a resin.

[0066] For example, the material of the protection layer 15 (which may be a single layer or a stack of multiple layers) is mainly a transparent material that does not block light penetration (the visible light transmittance of the material must be >70%), such as a glass cover.

[0067] In the embodiment of the present application, multiple electrodes 12 are located on one side of the substrate 11; multiple light-emitting elements 131 are located on the side of the multiple electrodes 12 away from the substrate 11, and the light-emitting elements 131 are electrically connected to the corresponding electrodes 12; the quantum dot layer 14 is located on the side of the multiple light-emitting elements 131 away from the substrate 11; the protective layer 15 is located on the side of the quantum dot layer 14 away from the substrate 11, and the protective layer 15 is a light-transmitting material. The multiple light-emitting elements 131 can be any one of an organic light-emitting diode (Organic Light-Emitting Diode, OLED light-emitting device), LED (light-emitting diode), MiniLED (Mini Light Emitting Diode, mini light-emitting diode), MicroLED (Micro Light Emitting Diode, micro light-emitting diode), and an integrated circuit light-emitting diode (integratedcircuit Light-Emitting Diode, referred to as IC LED). Therefore, compared with the prior art, in the display substrate 100 of the present application, the light emitted by the light emitting element 131 passes through the quantum dot layer 14 and then is emitted to the human eye from the side of the quantum dot layer 14 away from the substrate 11, and the quantum dot layer 14 excites and generates light of more colors, thereby improving the color saturation of the display substrate 100. In the display substrate 100 of the present application, the structure is simple, so that the driving can also be simplified.

[0068] In some embodiments, Figure 4 and Figure 5 As shown, the display substrate 100 further includes a first encapsulation layer 16 . The first encapsulation layer 16 is at least located on a side of the protection layer 15 away from the substrate 11 . The first encapsulation layer 16 includes a material different from that of the protection layer 15 .

[0069] For example, by providing the first encapsulation layer 16, the light-emitting element 131 and the quantum dot layer 14 in the display substrate 100 can be better protected, water vapor and oxygen can be prevented from entering the display substrate 100, the light-emitting element 131 can be prevented from being corroded by water vapor and oxygen to form dark spots, the electrode 12 can be prevented from being corroded by water vapor and oxygen to form defects such as bright lines and dark lines, and the quantum dot layer 14 can be prevented from being corroded by water vapor and oxygen to cause the material of the quantum dot layer 14 to fail. By providing the first encapsulation layer 16, the light-emitting element 131 and the quantum dot layer 14 in the display substrate 100 can be better protected, thereby improving the reliability of the display substrate 100.

[0070] For example, in some embodiments, the material of the protective layer 15 may be an inorganic material, for example, the material of the protective layer 15 includes at least one of silicon nitride (SiNx) and silicon oxide (SiOx). The first encapsulation layer 16 may be made of glass or polyimide (PI).

[0071] In some embodiments, Figures 3 to 5 As shown, the display substrate 100 includes a display area AA and a non-display area BB, and the protection layer 15 contacts the base 11 in the non-display area BB.

[0072] For example, Figures 3 to 5 As shown, a plurality of light emitting elements 131 are disposed in the display area AA, and the display area AA can display an image. The non-display area BB may include a frame area, and the non-display area BB may surround the display area AA.

[0073] For example, Figure 3 As shown, the display substrate 100 includes a display area AA and a non-display area BB, and the protective layer 15 contacts the substrate 11 in the non-display area BB. The protective layer 15 contacts the substrate 11 in the non-display area BB, which can prevent water vapor and oxygen from entering the display substrate 100 through the film layer between the protective layer 15 and the substrate 11. By setting the protective layer 15 to contact the substrate 11 in the non-display area BB, the light-emitting element 131 and the quantum dot layer 14 in the display substrate 100 can be better protected, thereby improving the reliability of the display substrate 100.

[0074] In some embodiments, Figure 4 and Figure 5 As shown, the display substrate 100 includes a display area AA and a non-display area BB, and the first encapsulation layer 16 covers the protection layer 15 and contacts the substrate 11 in the non-display area BB.

[0075] For example, the first encapsulation layer 16 covers the protective layer 15 and contacts the substrate 11 in the non-display area BB, which can prevent water vapor and oxygen from entering the display substrate 100 through the film layer between the first encapsulation layer 16 and the substrate 11. By setting the first encapsulation layer 16 to contact the substrate 11 in the non-display area BB, the light-emitting element 131 and the quantum dot layer 14 in the display substrate 100 can be better protected, thereby improving the reliability of the display substrate 100.

[0076] For example, in some embodiments, Figure 4 and Figure 5 As shown, the first encapsulation layer 16 covers the protective layer 15, and the protective layer 15 contacts the substrate 11 in the non-display area BB. The first encapsulation layer 16 also contacts the substrate 11 in the non-display area BB. At this time, the first encapsulation layer 16 includes a material different from that of the protective layer 15. By contacting with the substrate 11 through multiple or different materials, it can play a better role in enhancing protection and better improve the reliability of the display substrate 100.

[0077] In some embodiments, Figure 4 and Figure 5As shown, the display substrate 100 further includes a second encapsulation layer 17 , and the second encapsulation layer 17 is at least located on a side of the base 11 away from the light emitting element 131 .

[0078] For example, Figure 4 and Figure 5 As shown, the first encapsulation layer 16 and the second encapsulation layer 17 are respectively located on both sides of the substrate 11. The second encapsulation layer 17 can prevent the substrate 11 from being damaged, thereby preventing water vapor and oxygen from entering the display substrate 100 through the substrate 11, thereby improving the reliability of the display substrate.

[0079] For example, Figure 4 and Figure 5 As shown, the first encapsulation layer 16 and the second encapsulation layer 17 are respectively located on both sides of the substrate 11 . The first encapsulation layer 16 and the second encapsulation layer 17 play a better role in enhancing the encapsulation, and can better improve the reliability of the display substrate 100 .

[0080] For example, Figure 4 and Figure 5 It is illustrated that the quantum dot layer 14 has a light color of red, green, blue stack or any combination of other colors, wherein the light emitted by the light-emitting element 131 enters the quantum dot layer 14 to excite the quantum dots to form a light color with a full-color spectrum, and quantum dots with different colors are stacked or staggered with each other to directly form multiple pixels 101P.

[0081] For example, Figure 4 and Figure 5 As shown, each pixel 101P includes a red light emitting unit 131R, a green light emitting unit 131G, and a blue light emitting unit 131B. However, the arrangement of the light emitting units in the pixel 101P is not limited thereto.

[0082] For example, Figure 4 and Figure 5 As shown, the quantum dot layer 14 includes a plurality of quantum dot portions 141 , and the quantum dot portions 141 are arranged corresponding to the pixels 101P, or in other words, the quantum dot portions 141 are a part of the corresponding pixels 101P.

[0083] For example, Figure 4 and Figure 5 As shown, the materials of the first encapsulation layer 16 and the second encapsulation layer 17 may be PVB materials (Polyvinyl Butyral, PVB for short), polyethylene copolymers (polyethylene derivatives), or glass cover plates.

[0084] In some embodiments, Figure 5As shown, the first encapsulation layer 16 and the second encapsulation layer 17 are in contact with each other in the non-display area BB or the side surface of the substrate 11 . The first encapsulation layer 16 and the second encapsulation layer 17 are made of the same material and are an integrally formed structure.

[0085] For example, Figure 5 As shown, the first encapsulation layer 16 and the second encapsulation layer 17 are in contact in the non-display area BB or the side end surface of the substrate 11. The first encapsulation layer 16 and the second encapsulation layer 17 are made of the same material and are an integrally formed structure, which can improve the sealing performance of the first encapsulation layer 16 and the second encapsulation layer 17 and reduce the gap between the first encapsulation layer 16 and the second encapsulation layer 17. The first encapsulation layer 16 and the second encapsulation layer 17 play the best role in enhancing the encapsulation and can best improve the reliability of the display substrate 100.

[0086] In some embodiments, Figure 4 and Figure 5 As shown, the display substrate 100 is a transparent display substrate 100; the base 11, the protective layer 15, the first encapsulation layer 16 and the second encapsulation layer 17 are all made of light-transmitting materials.

[0087] For example, Figure 4 and Figure 5 As shown, the display substrate 100 is a transparent display substrate 100; the base 11, the protective layer 15, the first encapsulation layer 16 and the second encapsulation layer 17 are all light-transmitting materials, and the light on both sides of the display substrate 100 can penetrate the display substrate 100 through between two adjacent light-emitting elements 131.

[0088] For example, in some embodiments, the display substrate 100 is a transparent display substrate 100, the display substrate 100 is a transparent display panel, and the plurality of light emitting elements 131 are display units or sub-pixels of the transparent display panel.

[0089] See also Figure 6 , Figure 6 A schematic diagram of a display panel provided for some embodiments of the present application.

[0090] Second, see Figure 6 The present application also provides a display panel 200 , and the display panel 200 includes any one of the display substrates 100 described above.

[0091] By way of example, the display panel 200 may include a display substrate 100 , a flexible circuit board, and a control chip, wherein the flexible circuit board is electrically connected between the display substrate 100 and the control chip.

[0092] For example, in one embodiment, the display substrate 100 is used as a backlight module of the display panel 200, for example Figures 1 to 3For example, the display panel 200 also includes a liquid crystal box, which is arranged on the light-emitting side of the display substrate 100 (the side of the protective layer 15 away from the substrate 11), and the liquid crystal box uses the light of the display substrate 100 for display. The light-emitting element 131 in the display substrate 100 can be used for the light-emitting module of the backlight source of the display device. By coordinating the light colors of the light-emitting element 131 and the quantum dot layer 14, the complex backlight source control of the existing display device can be simplified, and the components used can be streamlined to reduce costs. And a display panel 200 with high color saturation is obtained.

[0093] For example, in another embodiment, the display substrate 100 is used as a display function component of the display panel 200, for example Figure 4 and Figure 5 For example, the display panel 200 does not include a liquid crystal box, and the light emitted by the light emitting element 131 does not need to pass through the liquid crystal box. The light emitted by the light emitting element 131 directly reaches the human eye after being emitted, and the light emitting element 131 is a component of the sub-pixel. For example, a Mini LED (IC LED) transparent display panel is provided. This display panel is a transparent display device with improved grayscale, wide color gamut and high color saturation, which can improve the problem of insufficient resolution and color gradation of the Mini LED (IC LED) transparent display panel, thereby improving the luminous power and conversion efficiency, improving the wide viewing angle, improving color uniformity, etc.

[0094] See also Figures 7 to 9 . Figure 7 A schematic diagram of a first process step of a method for manufacturing a display substrate provided in some embodiments of the present application. Figure 8 A schematic diagram of a second process step of a method for manufacturing a display substrate provided in some embodiments of the present application. Fig. 9 A third process step schematic diagram of a method for manufacturing a display substrate provided in some embodiments of the present application.

[0095] Third, see Figure 7 The present application also provides a method for manufacturing a display substrate, and the method for manufacturing a display substrate includes: step S100, step S200, step S300, step S400 and step S500.

[0096] Step S100, providing a substrate.

[0097] Illustratively, a substrate 11 is provided.

[0098] Step S200: forming a plurality of electrodes on one side of the substrate.

[0099] Illustratively, a plurality of electrodes 12 are formed on one side of the substrate 11 .

[0100] Step S300: forming a plurality of light-emitting elements on a side of the plurality of electrodes away from the substrate, wherein the light-emitting elements are electrically connected to the corresponding electrodes.

[0101] For example, a plurality of light emitting elements 131 are formed on a side of the plurality of electrodes 12 away from the substrate 11 , and the light emitting elements 131 are electrically connected to corresponding electrodes 12 .

[0102] For example, when the multiple light-emitting elements 131 are MiniLED (Mini Light Emitting Diode) or Micro LED (Micro Light Emitting Diode), the multiple light-emitting elements 131 can be manufactured on the corresponding first electrode and the second electrode through processes such as mass transfer, and the light-emitting elements 131 can be electrically connected to the corresponding first electrode and the second electrode through bonding metals such as solder.

[0103] Step S400: forming a quantum dot layer on a side of the plurality of light-emitting elements away from the substrate.

[0104] For example, the quantum dot layer 14 is formed on a side of the plurality of light emitting elements 131 away from the substrate 11 .

[0105] Step S500: forming a protective layer on a side of the quantum dot layer away from the substrate, wherein the protective layer is a light-transmitting material.

[0106] For example, a protective layer 15 is formed on a side of the quantum dot layer 14 away from the substrate 11 , and the protective layer 15 is a light-transmitting material.

[0107] In some embodiments, Figure 8 As shown, the method for manufacturing the display substrate further includes step S600.

[0108] Step S600 , forming a first encapsulation layer, wherein the first encapsulation layer is at least located on a side of the protective layer away from the substrate.

[0109] By way of example, a first encapsulation layer 16 is formed, and the first encapsulation layer 16 is at least located on a side of the protection layer 15 away from the substrate 11 .

[0110] In some embodiments, Fig. 9 As shown, the method for manufacturing the display substrate further includes step S700.

[0111] Step S700 , forming a second encapsulation layer, wherein the second encapsulation layer is at least located on a side of the substrate away from the light-emitting element.

[0112] For example, a second encapsulation layer 17 is formed, and the second encapsulation layer 17 is at least located on a side of the substrate 11 away from the light-emitting element 131 . The display substrate 100 includes a display area AA and a non-display area BB. The first encapsulation layer 16 contacts the second encapsulation layer 17 in the non-display area BB or the side end surface of the substrate 11 .

[0113] For example, the display substrate manufactured by the manufacturing method of the display substrate of the embodiment of the present application has the same structure as the display substrate 100 in the above embodiment, and the structure and other features of the display substrate manufactured by the manufacturing method of the display substrate of the embodiment of the present application are not repeated here.

[0114] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0115] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A display substrate, characterized in that: include: substrate; A plurality of electrodes are arranged in an array on one side of the substrate; A plurality of light-emitting elements are located on a side of the plurality of electrodes away from the substrate, and the light-emitting elements are electrically connected to the corresponding electrodes; A quantum dot layer, located on a side of the plurality of light-emitting elements away from the substrate; The protective layer is located on a side of the quantum dot layer away from the substrate, and the protective layer is a light-transmitting material.

2. The display substrate according to claim 1, characterized in that: Also includes: The first encapsulation layer is at least located on a side of the protection layer away from the substrate, and the first encapsulation layer comprises a material different from that of the protection layer.

3. The display substrate according to claim 2, characterized in that: The display substrate includes a display area and a non-display area, and the protection layer contacts the base in the non-display area.

4. The display substrate according to claim 2, characterized in that: The display substrate includes a display area and a non-display area. The first encapsulation layer covers the protection layer and contacts the base in the non-display area.

5. The display substrate according to claim 4, characterized in that: Also includes: The second encapsulation layer is at least located on a side of the substrate away from the light-emitting element.

6. The display substrate according to claim 5, characterized in that: The first encapsulation layer and the second encapsulation layer are in contact with each other in the non-display area or at a side end surface of the substrate. The first encapsulation layer and the second encapsulation layer are made of the same material and are an integrally formed structure.

7. The display substrate according to claim 5, characterized in that: The display substrate is a transparent display substrate; The substrate, the protective layer, the first encapsulation layer and the second encapsulation layer are all made of light-transmitting materials.

8. A display panel, characterized in that: The display substrate comprises the display substrate as claimed in any one of claims 1 to 7.

9. A method for manufacturing a display substrate, characterized in that: include: providing a substrate; forming a plurality of electrodes on one side of the substrate; A plurality of light-emitting elements are formed on a side of the plurality of electrodes away from the substrate, wherein the light-emitting elements are electrically connected to the corresponding electrodes; forming a quantum dot layer on a side of the plurality of light-emitting elements away from the substrate; A protective layer is formed on a side of the quantum dot layer away from the substrate, and the protective layer is a light-transmitting material.

10. The method for manufacturing a display substrate according to claim 9, wherein: Also includes: forming a first encapsulation layer, wherein the first encapsulation layer is at least located on a side of the protective layer away from the substrate; A second encapsulation layer is formed, wherein the second encapsulation layer is at least located on a side of the substrate away from the light-emitting element.

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