Quantum dot display screen, preparation method thereof and display device

Abstract

The invention discloses a quantum dot display screen, a preparation method thereof and a display device. The quantum dot display screen comprises a unit plate, the glass substrate comprises a plurality of grooves, and the grooves penetrate through the glass substrate; a light emitting element, and the groove exposes the light emitting element; the light-emitting elements comprise a first light-emitting element and a second light-emitting element, the first light-emitting element comprises a first light-emitting chip, and the second light-emitting element comprises a first light-emitting chip and a quantum dot layer; in the second light-emitting element, the quantum dot layer is located on the side, away from the unit plate, of the first light-emitting chip. The groove comprises a first opening and a second opening, the first opening is located on the side, close to the unit plate, of the second opening, and the orthographic projection area of the first opening towards the unit plate is smaller than that of the second opening towards the unit plate; by arranging the light-emitting element in the groove of the glass substrate, the overall structural stability can be improved, the light emitting effect of the light-emitting element is guaranteed by adjusting the shape of the groove, and therefore the overall display effect of the display screen is guaranteed.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of display technology, and in particular to a quantum dot display screen and a preparation method thereof, and a display device. Background Art

[0002] With the continuous development of display technology, display screens have been widely used in people's production and life. In order to better meet people's needs, the display screen can be adjusted, for example, some film layers in the display screen can be adjusted to improve the overall effect of the display screen. Summary of the invention

[0003] The embodiment of the present invention provides a quantum dot display screen and a preparation method thereof, and a display device, which ensures the light emitting effect of the light emitting element by arranging the light emitting element in a groove of a glass substrate and adjusting the shape of the groove, thereby ensuring the overall display effect of the display screen.

[0004] In a first aspect, an embodiment of the present invention provides a quantum dot display screen, comprising:

[0005] Unit board;

[0006] A glass substrate, the glass substrate is located at one side of the unit plate, and the glass substrate comprises a plurality of grooves, the grooves passing through the glass substrate;

[0007] A light-emitting element, the light-emitting element is located at one side of the unit board, and the groove exposes the light-emitting element; the light-emitting element includes a first light-emitting element and a second light-emitting element having different light-emitting colors, the first light-emitting element includes a first light-emitting chip, and the second light-emitting element includes the first light-emitting chip and a quantum dot layer; and in the second light-emitting element, the quantum dot layer is located at a side of the first light-emitting chip away from the unit board;

[0008] The groove includes a first opening and a second opening, the first opening is located on a side of the second opening close to the unit plate, and an orthographic projection area of ​​the first opening onto the unit plate is smaller than an orthographic projection area of ​​the second opening onto the unit plate.

[0009] Optionally, the quantum dot display screen further includes a light blocking structure, the groove includes a side wall, the side wall connects the first opening and the second opening; the light blocking structure is arranged on the side wall.

[0010] Optionally, the material of the light blocking structure includes ink.

[0011] Optionally, the glass substrate includes a colored glass substrate.

[0012] Optionally, the quantum dot display screen further includes an adhesive;

[0013] The adhesive is located between the unit plate and the glass substrate.

[0014] Optionally, the quantum dot display screen further includes an encapsulation layer;

[0015] The encapsulation layer is located on a side of the glass substrate away from the unit plate.

[0016] Optionally, the unit board includes a circuit board or a glass array substrate.

[0017] In a second aspect, an embodiment of the present invention provides a method for preparing a quantum dot display screen, comprising:

[0018] Providing a unit board, the unit board comprising a plurality of first light-emitting chips;

[0019] A glass substrate is provided, and the glass substrate includes a plurality of grooves, and the grooves penetrate the glass substrate; wherein the grooves include a first opening and a second opening, the first opening is located on a side of the second opening close to the unit plate, and an orthographic projection area of ​​the first opening to the unit plate is smaller than an orthographic projection area of ​​the second opening to the unit plate;

[0020] Aligning and laminating the unit board and the glass substrate, wherein the groove exposes the first light-emitting chip; preparing a first light-emitting element and a second light-emitting element having different light-emitting colors; wherein the first light-emitting element includes the first light-emitting chip; and the second light-emitting element includes the first light-emitting element and a quantum dot layer, and in the second light-emitting element, the quantum dot layer is located on a side of the first light-emitting chip away from the unit board;

[0021] Optionally, a glass substrate is provided and the glass substrate includes a plurality of grooves, wherein the grooves penetrate the glass substrate and include:

[0022] providing the glass substrate;

[0023] The glass substrate is etched by laser to prepare a plurality of grooves, wherein the grooves penetrate the glass substrate; wherein the grooves include a first opening and a second opening, wherein the first opening is located on a side of the second opening close to the unit plate, and an orthographic projection area of ​​the first opening onto the unit plate is smaller than an orthographic projection area of ​​the second opening onto the unit plate.

[0024] In a third aspect, an embodiment of the present invention provides a display device, comprising the quantum dot display screen described in any one of the first aspects.

[0025] An embodiment of the present invention provides a quantum dot display screen, which includes a unit board and a glass substrate, wherein the glass substrate is located on one side of the unit board, and the quantum dot display screen also includes a plurality of light-emitting elements for realizing the display function of the quantum dot display screen. Specifically, the glass substrate includes a plurality of grooves, and the grooves penetrate the glass substrate, and the light-emitting elements of the quantum dot display screen are electrically connected to the unit board in the grooves, that is, the grooves expose the light-emitting elements arranged on the unit board. Among them, the light-emitting elements include a first light-emitting element and a second light-emitting element, wherein the first light-emitting element only includes a first light-emitting chip, that is, the light-emitting color of the first light-emitting element is the light-emitting color of the first light-emitting chip; and the second light-emitting element is further provided with a quantum dot layer on the basis of the first light-emitting chip, that is, the light-emitting color of the first light-emitting element is the color of the mixture of the light emitted by the first light-emitting chip and the quantum dots in the quantum dot layer, thereby realizing the color display effect of the quantum dot display screen. Furthermore, the groove on the glass substrate includes a first opening and a second opening, the first opening is located on a side of the second opening close to the unit plate, and the orthographic projection area of ​​the first opening to the unit plate is smaller than the orthographic projection area of ​​the second opening to the unit plate, that is, the groove can be understood as a groove with a top opening larger than a bottom opening, which can ensure the light emitting effect of the light-emitting element, thereby ensuring the overall display effect of the quantum dot display screen, and the glass substrate has a certain hardness, thereby also ensuring the stability of the overall structure of the quantum dot display screen.

[0026] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 It is a schematic structural diagram of a quantum dot display screen provided by an embodiment of the present invention;

[0029] Figure 2 yes Figure 1 A schematic diagram of the first structure along the section line A-A';

[0030] Figure 3 is a schematic structural diagram of another quantum dot display screen provided by an embodiment of the present invention;

[0031] Figure 4is a schematic structural diagram of another quantum dot display screen provided by an embodiment of the present invention;

[0032] Figure 5 yes Figure 2 The first enlarged schematic diagram of the middle area B;

[0033] Figure 6 yes Figure 2 A second enlarged schematic diagram of the middle region B;

[0034] Figure 7 yes Figure 1 A schematic diagram of the second structure along the section line A-A';

[0035] Figure 8 This is a schematic diagram of a method for preparing a first quantum dot display screen provided by an embodiment of the present invention;

[0036] Fig. 9 This is a schematic diagram of a preparation process of a quantum dot display screen provided by an embodiment of the present invention;

[0037] Fig.10 is a schematic diagram of a method for preparing a second quantum dot display screen provided by an embodiment of the present invention;

[0038] Fig.11 It is a structural schematic diagram of a display device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be fully described below in combination with the drawings in the embodiments of the present invention through specific implementation methods. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work fall within the protection scope of the present invention.

[0040] Figure 1 is a schematic diagram of the structure of a quantum dot display screen provided by an embodiment of the present invention, Figure 2 yes Figure 1 The first structural diagram along the section line A-A' is shown in the figure. Figure 3 is a schematic diagram of the structure of another quantum dot display screen provided by an embodiment of the present invention, Figure 4 is a schematic diagram of the structure of another quantum dot display screen provided by an embodiment of the present invention, referring to Figures 1 to 4As shown, an embodiment of the present invention provides a quantum dot display screen 10, which includes: a unit board 100; a glass substrate 200, the glass substrate 200 is located on one side of the unit board 100, and the glass substrate 200 includes a plurality of grooves 210, and the grooves 210 penetrate the glass substrate 200; a light-emitting element 300, the light-emitting element 300 is located on one side of the unit board 100, and the grooves 210 expose the light-emitting element 300; the light-emitting element 300 includes a first light-emitting element 310 and a second light-emitting element 320 with different light-emitting colors, and the first light-emitting element 310 and the second light-emitting element 320 have different light-emitting colors. 10 includes a first light-emitting chip 311, and the second light-emitting element 320 includes the first light-emitting chip 311 and a quantum dot layer 321; and in the second light-emitting element 320, the quantum dot layer 321 is located on a side of the first light-emitting chip 311 away from the unit plate 100; wherein the groove 210 includes a first opening 210a and a second opening 210b, the first opening 210a is located on a side of the second opening 210b close to the unit plate 100, and the orthographic projection area of ​​the first opening 210a to the unit plate 100 is smaller than the orthographic projection area of ​​the second opening 210b to the unit plate 100.

[0041] Specifically, refer to Figure 1 As shown, the quantum dot display screen 10 includes a unit board 100 and a light emitting element 300 located on one side of the unit board 100, and the unit board 100 is used to drive the light emitting element 300 to emit light for display. Exemplarily, the unit board 100 includes a driving circuit (not specifically shown in the figure), and the driving circuit can drive the light emitting element 300 to emit light, thereby achieving the display effect of the quantum dot display screen 10. Further, the light emitting element 300 can include light emitting elements of different colors, such as a red light emitting element, a blue light emitting element, and a green light emitting element, thereby achieving a color display effect of the quantum dot display screen 10.

[0042] For further reference, Figure 1 and Figure 2 As shown, the quantum dot display screen 10 also includes a glass substrate 200, and the glass substrate 200 includes a plurality of grooves 210, the grooves 210 penetrate the glass substrate 200, and the light-emitting elements 300 arranged on the unit board 100 are exposed through the grooves 210 of the glass substrate 200, that is, the arrangement of the glass substrate 200 will not affect the light-emitting display of the light-emitting elements 300. The additional glass substrate 200 can protect the light-emitting elements 300 to a certain extent, ensuring that the structure of the quantum dot display screen 10 is more stable, thereby ensuring the display effect of the quantum dot display screen 10. Furthermore, the glass substrate 200 has a certain hardness, which can also ensure that the overall stability of the structure of the quantum dot display screen 10 is better; by placing the subsequently filled quantum dot layer 321 in the grooves 210, the airtight protection of the quantum dots in the quantum dot layer 321 can also be improved, thereby ensuring the display effect of the quantum dot display screen 10.

[0043] The light emitting element 300 includes a first light emitting element 310 and a second light emitting element 320. The light emitting colors of the first light emitting element 310 and the second light emitting element 320 are different, that is, they are used to achieve the color display effect of the quantum dot display screen 10. Figure 1 and Figure 2 As shown, the first light-emitting element 310 includes a first light-emitting chip 311, and the second light-emitting element 320 includes the first light-emitting chip 311 and a quantum dot layer 321, and the quantum dot layer 321 is located on the side of the first light-emitting chip 311 away from the unit board 100. That is, the luminous color of the first light-emitting element 310 is the luminous color of the first light-emitting chip 311, and the luminous color of the second light-emitting element 320 is the color of the light after the light emitted by the first light-emitting chip 311 is mixed with the quantum dots doped in the quantum dot layer 321 and excited. Exemplarily, the first light-emitting chip 311 can be understood as a blue light-emitting chip, then the first light-emitting element 311 only includes a blue light-emitting chip, and the first light-emitting element 311 emits blue light; while the second light-emitting element 320 includes a blue light-emitting chip and a quantum dot layer 321, and the light emitted by the second light-emitting element 320 can be red light or green light after being mixed and excited by the quantum dots in the quantum dot layer 321. The specific light color of the second light emitting element 320 can be adaptively adjusted based on the different quantum dots in the quantum dot layer 321, and this is not specifically limited in the embodiment of the present invention. Figure 2 As shown, the first light-emitting chip 311 can emit red light when passing through the quantum dot layer 321 (321a), and the first light-emitting chip 311 can emit green light when passing through the quantum dot layer 321 (321b), and combined with the blue light-emitting element emitted by the first light-emitting element 310, the quantum dot display screen 10 can achieve a color display effect.

[0044] Optionally, the filling process of the quantum dot layer 321 can be as follows: after the unit board 100 with the first light-emitting chip 311 is aligned and bonded to the glass substrate 100 with the groove 210, the first light-emitting chip 311 is exposed through the groove 210. The prepared quantum dot material is dotted in the set groove 210 in an array using a dispensing machine, thereby preparing the quantum dot layer 321. After filling, the entire structure is placed in an oven for curing to prepare the quantum dot display screen 10.

[0045] Furthermore, different arrangements of the light emitting elements 300 can be used to achieve different colors. Figure 1 , Figure 3 and Figure 4 Different arrangements of multiple light emitting elements 300 of different colors are shown. The arrangement of the light emitting elements 300 can be adjusted according to display requirements. The embodiments of the present invention will not be described one by one. Figure 1 and Figure 3 As shown, the light emitting elements 300 of different colors in the quantum dot display screen 10 can form a repetitive arrangement unit 3000; further, the adjacent light emitting elements 300 of different colors can be mutually borrowed to form a repetitive periodic arrangement unit, thereby achieving the color display effect of the quantum dot display screen 10. The specific arrangement of the light emitting elements 300 can be adaptively adjusted according to different quantum dot display screens 10, and the embodiment of the present invention does not specifically limit this.

[0046] The groove 210 on the glass substrate 200 for exposing the light emitting element 300 includes a first opening 210a and a second opening 210b, wherein the first opening 210a is located on a side of the second opening 210b close to the unit board 100, and the orthographic projection area of ​​the first opening 210a to the unit board 100 is smaller than the orthographic projection area of ​​the second opening 210b to the unit board 100. It can be understood that the opening area of ​​the first opening 210a is larger than the opening area of ​​the second opening 210b, or it can be understood that the cross section of the groove 210 is an inverted trapezoidal shape. Figure 2 As shown, by adjusting the shape of the groove 210, it is possible to ensure that the light emitting element 300 in the groove 210 has a larger light emitting opening, that is, to ensure the light emitting effect of the light emitting element 300, thereby improving the overall display effect of the quantum dot display screen 10. Further, the cross section of the groove 210 is set to an inverted trapezoidal structure, so that it is possible to ensure that the space for the quantum dot layer 321 at the second light emitting element 320 to be deposited is larger, and it is possible to ensure that the first light emitting chip 311 at the second light emitting element 320 and the quantum dots in the quantum dot layer 321 have a better mixing space, and ensure that the light emitted by the second light emitting element 320 has a better effect, thereby improving the display effect of the quantum dot display screen 10.

[0047] In summary, the quantum dot display provided by the embodiment of the present invention, wherein the groove on the glass substrate includes a first opening and a second opening, and the first opening is located on the side of the second opening close to the unit plate, and the orthographic projection area of ​​the first opening to the unit plate is smaller than the orthographic projection area of ​​the second opening to the unit plate, that is, the groove can be understood as a groove with a top opening larger than a bottom opening, which can ensure the light emitting effect of the light-emitting element, thereby ensuring the overall display effect of the quantum dot display, and the glass substrate has a certain hardness, thereby also ensuring the stability of the overall structure of the quantum dot display.

[0048] Figure 5 yes Figure 2 The first enlarged schematic diagram of area B in the middle, refer to Figures 1 to 5As shown, the quantum dot display screen 10 further includes a light blocking structure 400 , the groove 210 includes a side wall 210 c , and the side wall 210 c connects the first opening 210 a and the second opening 210 b ; the light blocking structure 400 is disposed on the side wall 210 c .

[0049] Among them, reference Figure 5 As shown, the quantum dot display screen 10 further includes a light blocking structure 400, and the light blocking structure 400 is disposed on the side wall 210c of the groove 210. The light blocking structure 400 can block the transmission of light, or the light blocking structure 400 can be understood as a black glue layer or a black inorganic film layer, etc., which can absorb the light transmitted to the light blocking structure 400.

[0050] Furthermore, the light blocking structure 400 is disposed on the side wall 210 c of the groove 210 , which can avoid color crosstalk between light emitting elements 300 of different colors, thereby ensuring the overall display effect of the quantum dot display screen 10 .

[0051] refer to Figures 1 to 5 As shown, the material of the light blocking structure 400 includes ink.

[0052] Optionally, the light-blocking structure 400 may be ink, so that color crosstalk between light-emitting elements 300 of different colors in different grooves 210 can be avoided, thereby ensuring the overall display effect of the quantum dot display screen 10. The light-blocking structure 400 is prepared before the groove 210 is filled with the quantum dot layer 321. Specifically, after the glass substrate 200 with the groove 210 is aligned and bonded to the unit board 100, black ink can be sprayed on the side wall 210c of the groove 210 to ensure the display effect of the quantum dot display screen 10.

[0053] Optional, Figure 6 yes Figure 2 The second enlarged schematic diagram of area B in the middle, refer to Figure 1 , Figure 2 and Figure 6 As shown, the glass substrate 200 includes a colored glass substrate.

[0054] For further reference, Figure 6 As shown, the glass substrate 200 located on one side of the unit board 100 can be a colored glass substrate, and the colored glass substrate can also absorb and block the light transmitted thereto. Specifically, a light emitting element 300 electrically connected to the unit board 100 is disposed in the groove 210 of the glass substrate 200, and the light of the light emitting element 300 can be emitted through the opening of the groove 210, thereby ensuring the display function of the quantum dot display screen 10.

[0055] Furthermore, when the glass substrate 200 is a colored glass substrate, light between different light-emitting elements 300 in different grooves 210 can be blocked to avoid color crosstalk between the light-emitting elements 300 in different grooves 210, thereby improving the overall display effect of the quantum dot display screen 10.

[0056] Continue to refer Figure 6 As shown, the quantum dot display screen 10 further includes an adhesive 500 ; the adhesive 500 is located between the unit plate 100 and the glass substrate 200 .

[0057] Furthermore, the quantum dot display screen 10 also includes an adhesive 500 , which is used to further reinforce the aligned unit board 100 and the glass substrate 200 , thereby ensuring that the structure of the quantum dot display screen 10 is more stable.

[0058] Optionally, the adhesive 500 includes a solute and a solvent, and the ratio of the solute to the solvent can be 1:3 or 1:5, etc. The specific ratio of the solute to the solvent is not specifically limited in the embodiment of the present invention, and the solvent and solute used in the adhesive 500 can also be adjusted accordingly according to different needs, which is not specifically limited in the embodiment of the present invention. After the unit panel 100 and the glass substrate 200 are bonded together by the adhesive 500, they can be moved to an oven for baking and curing. Furthermore, after the glass substrate 200 and the unit panel 100 are bonded and fixed, the glass substrate 200 and the unit panel 100 can be placed in a plasma cleaning device to clean the surface of the structure to ensure that the filling of the quantum dot layer 321 is more accurate, thereby ensuring the display effect of the quantum dot display screen 10.

[0059] Figure 7 yes Figure 1 The second structural diagram along the section line A-A', refer to Figure 1 and Figure 7 As shown, the quantum dot display screen 10 further includes an encapsulation layer 600 ; the encapsulation layer 600 is located on a side of the glass substrate 200 away from the unit plate 100 .

[0060] Furthermore, the quantum dot display screen 10 further includes an encapsulation layer 600, which is disposed on a side of the glass substrate 200 away from the unit board 100, and is used to protect the overall structure of the quantum dot display screen 10. Specifically, the encapsulation layer 600 may include a first light-emitting chip 311 and a filled quantum dot layer 321, thereby ensuring the display effect of the quantum dot display screen 10.

[0061] Optionally, the encapsulation layer 600 may be an adhesive layer, which is coated on a side of the glass substrate 200 away from the unit board 100 and cured with ultraviolet rays, thereby achieving protection of the quantum dot display screen 10 by the encapsulation layer 600.

[0062] Optional, reference Figures 1 to 7 As shown, the unit board 100 includes a circuit board and a glass array substrate.

[0063] Specifically, the unit board 100 can be a circuit board or a glass array substrate, that is, the unit board 100 can be based on the realization of driving the light-emitting element 300 for display. The specific type of the unit board 100 can be adaptively adjusted according to different quantum dot display screens 10, and the embodiment of the present invention does not make specific limitations on this.

[0064] Based on the same inventive concept, an embodiment of the present invention further provides a method for preparing a quantum dot display screen. Figure 8 is a schematic diagram of a method for preparing a first quantum dot display screen provided by an embodiment of the present invention, Fig. 9 is a schematic diagram of a preparation process of a quantum dot display screen provided by an embodiment of the present invention, with reference to Figure 8 and Fig. 9 As shown, the preparation method comprises:

[0065] S110 , providing a unit board, wherein the unit board includes a plurality of first light-emitting chips.

[0066] One side of the unit board includes a plurality of electrically connected first light-emitting chips, and the unit board is used to drive the first light-emitting chips to perform light-emitting display. Exemplarily, the unit board can be a circuit board or a glass array substrate, that is, the unit board can be based on realizing the driving display of the light-emitting element. The specific type of the unit board can be adaptively adjusted according to different quantum dot display screens, and the embodiment of the present invention does not specifically limit this.

[0067] Specifically, refer to Fig. 9 As shown in step a.

[0068] S120, providing a glass substrate, wherein the glass substrate comprises a plurality of grooves, and the grooves penetrate the glass substrate.

[0069] S130, aligning and bonding the unit board and the glass substrate, wherein the groove exposes the first light-emitting chip.

[0070] Specifically, refer to Fig. 9 As shown in step b, a glass substrate is provided, and a groove is prepared on the glass substrate, wherein the prepared groove has different opening areas on both sides of the glass substrate.

[0071] For further reference, Fig. 9As shown in step c, the glass substrate 200 and the unit panel 100 are aligned and bonded, and the first light-emitting chip 311 on the unit panel 100 is exposed at the groove 210 to ensure that the glass substrate 200 does not affect the light-emitting effect of the first light-emitting chip 311, thereby ensuring the display effect of the prepared quantum dot display screen.

[0072] Specifically, in the glass substrate 200, the groove 210 penetrates the glass substrate 200, and the first light-emitting chip 311 arranged on the unit board 100 is exposed through the groove 210 of the glass substrate 200, that is, the arrangement of the glass substrate 200 will not affect the light-emitting display of the first light-emitting chip 311. The additional glass substrate 200 can protect the first light-emitting chip 311 to a certain extent, ensuring that the structure of the quantum dot display screen 10 is more stable, thereby ensuring the display effect of the quantum dot display screen 10. Furthermore, the glass substrate 200 has a certain hardness, which can also ensure that the overall stability of the quantum dot display screen 10 is better; by placing the subsequently filled quantum dot layer 321 in the groove 210, while realizing the color display effect of the quantum dot display screen, the airtightness protection of the quantum dots in the quantum dot layer 321 can also be improved to ensure the display effect of the quantum dot display screen 10.

[0073] Further, the groove 210 on the glass substrate 200 that exposes the first light-emitting chip 311 includes a first opening 210a and a second opening 210b, wherein the first opening 210a is located on the side of the second opening 210b close to the unit board 100, and the orthographic projection area of ​​the first opening 210a to the unit board 100 is smaller than the orthographic projection area of ​​the second opening 210b to the unit board 100, which can be understood as the opening area of ​​the first opening 210a is larger than the opening area of ​​the second opening 210b, or it can be understood as the cross-section of the groove 210 is an inverted trapezoidal shape. By adjusting the shape of the groove 210, it can be ensured that the first light-emitting chip 311 in the groove 210 has a larger range of light-emitting openings, that is, the light-emitting effect of the first light-emitting chip 311 is ensured, thereby improving the overall display effect of the quantum dot display screen 10. Furthermore, the cross-section of the groove 210 is set to an inverted trapezoidal structure, which can ensure that the quantum dot layer 321 subsequently filled in the first light-emitting chip 311 has a larger space for deposition, and can ensure that the first light-emitting chip 311 and the quantum dots in the quantum dot layer 321 have a better mixing space, thereby improving the display effect of the quantum dot display screen 10.

[0074] S140, preparing a first light-emitting element and a second light-emitting element.

[0075] Among them, reference Fig. 9As shown in step d, a quantum dot layer 321 is filled in a part of the groove 210 of the glass substrate 200, the device for emitting light in the groove 210 that is not filled with the quantum dot layer 321 is the first light-emitting element 310 (that is, the first light-emitting element 310 only includes the first light-emitting chip 311), and the device for emitting light in the groove 210 that is filled with the quantum dot layer 321 is the second light-emitting element 320 (that is, the second light-emitting element 320 includes the first light-emitting chip 311 and the quantum dot layer 321).

[0076] Specifically, the prepared quantum dot display screen 10 includes a plurality of light-emitting elements 300, and the light-emitting elements 300 include a first light-emitting element 310 and a second light-emitting element 320. The light-emitting colors of the first light-emitting element 310 and the second light-emitting element 320 are different, that is, they are used to achieve the color display effect of the quantum dot display screen 10. The first light-emitting element 310 includes a first light-emitting chip 311, and the second light-emitting element 320 includes a first light-emitting chip 311 and a quantum dot layer 321, and the quantum dot layer 321 is located on the side of the first light-emitting chip 311 away from the unit board 100. That is, the light-emitting color of the first light-emitting element 310 is the light-emitting color of the first light-emitting chip 311, and the light-emitting color of the second light-emitting element 320 is the color of the light emitted by the first light-emitting chip 311 and the quantum dots doped in the quantum dot layer 321 after mixing and exciting. Exemplarily, the first light-emitting chip 311 can be understood as a blue light-emitting chip, and the first light-emitting element 311 only includes a blue light-emitting chip, and the first light-emitting element 311 emits blue light; and the second light-emitting element 320 includes a blue light-emitting chip and a quantum dot layer 321, and the light emitted by the second light-emitting element 320 can be red light or green light after mixed excitation of quantum dots in the quantum dot layer 321. For the specific light color of the second light-emitting element 320, it can be adaptively adjusted based on the different quantum dots in the quantum dot layer 321, and the embodiment of the present invention does not specifically limit this. Exemplarily, the first light-emitting chip 311 can emit red light when passing through the quantum dot layer 321 (321a), and the first light-emitting chip 311 can emit green light when passing through the quantum dot layer 321 (321b), and combined with the blue light-emitting element emitted by the first light-emitting element 310, the quantum dot display screen 10 can achieve a color display effect.

[0077] Furthermore, different arrangements of the light emitting elements 300 can be used to achieve different colors. Figure 1 , Figure 3 and Figure 4 Different arrangements of multiple light emitting elements 300 of different colors are shown. The arrangement of the light emitting elements 300 can be adjusted according to display requirements. The embodiments of the present invention will not be described one by one. Figure 1 and Figure 3As shown, the light emitting elements 300 of different colors in the quantum dot display screen 10 can form a repetitive arrangement unit 3000; further, the adjacent light emitting elements 300 of different colors can be mutually borrowed to form a repetitive periodic arrangement unit, thereby achieving the color display effect of the quantum dot display screen 10. The specific arrangement of the light emitting elements 300 can be adaptively adjusted according to different quantum dot display screens 10, and the embodiment of the present invention does not specifically limit this.

[0078] In summary, a method for preparing a quantum dot display screen provided by an embodiment of the present invention is to prepare a plurality of grooves on a glass substrate, and the grooves penetrate the glass substrate, and the light-emitting element of the quantum dot display screen is electrically connected to the unit board in the grooves. Among them, the light-emitting element includes a first light-emitting element and a second light-emitting element, and the first light-emitting element only includes a first light-emitting chip, that is, the light-emitting color of the first light-emitting element is the light-emitting color of the first light-emitting chip; and the second light-emitting element is further provided with a quantum dot layer on the basis of the first light-emitting chip, that is, the light-emitting color of the first light-emitting element is the color of the light emitted by the first light-emitting chip and the quantum dots in the quantum dot layer after mixing, thereby realizing the color display effect of the quantum dot display screen. Further, the shape of the groove on the glass substrate is adjusted, and the orthographic projection area of ​​the first opening to the unit board is smaller than the orthographic projection area of ​​the second opening to the unit board, that is, the groove can be understood as a groove with a top opening larger than the bottom opening shape, which can ensure the light-emitting effect of the light-emitting element, thereby ensuring the overall display effect of the quantum dot display screen, and the glass substrate has a certain hardness, so as to ensure the stability of the overall structure of the quantum dot display screen.

[0079] Fig.10 is a schematic diagram of a method for preparing a second quantum dot display screen provided by an embodiment of the present invention, with reference to Fig.10 As shown, the method for preparing a quantum dot display screen provided by the embodiment of the present invention further includes:

[0080] S210 , providing a unit board, wherein the unit board includes a plurality of first light-emitting chips.

[0081] S220 , providing a glass substrate.

[0082] S230, etching the glass substrate with laser to prepare a plurality of grooves, wherein the grooves penetrate the glass substrate.

[0083] Specifically, the grooves can be prepared on the glass substrate by laser etching. The opening size of the grooves can be achieved by adjusting the laser spot size and the laser energy, which is not specifically limited in the embodiment of the present invention.

[0084] S240, aligning and bonding the unit board and the glass substrate, wherein the groove exposes the first light-emitting chip.

[0085] Furthermore, the quantum dot display screen also includes an adhesive 500, which is used to further reinforce the aligned unit board and the glass substrate, thereby ensuring that the structure of the quantum dot display screen is more stable.

[0086] Optionally, the adhesive 500 includes a solute and a solvent, and the ratio of the solute to the solvent can be 1:3 or 1:5, etc. The specific ratio of the solute to the solvent is not specifically limited in the embodiment of the present invention, and the solvent and solute used in the adhesive can be adjusted accordingly according to different needs, which is not specifically limited in the embodiment of the present invention. After the unit plate and the glass substrate are bonded together by the adhesive, they can be moved to an oven for baking and curing. Furthermore, after the glass substrate and the unit plate are bonded and fixed, the glass substrate and the unit plate can be placed in a plasma cleaning device to clean the surface of the structure to ensure that the filling of the quantum dot layer 321 is more accurate, thereby ensuring the display effect of the quantum dot display screen 10.

[0087] S250, preparing a first light-emitting element and a second light-emitting element.

[0088] Specifically, the prepared quantum dot display screen includes a plurality of light-emitting elements, the light-emitting elements include a first light-emitting element and a second light-emitting element, and the light-emitting colors of the first light-emitting element and the second light-emitting element are different, that is, they are used to achieve the color display effect of the quantum dot display screen. The first light-emitting element includes a first light-emitting chip, and the second light-emitting element includes a first light-emitting chip and a quantum dot layer, and the quantum dot layer is located on the side of the first light-emitting chip away from the unit board. That is, the light-emitting color of the first light-emitting element is the light-emitting color of the first light-emitting chip, and the light-emitting color of the second light-emitting element is the color of the light emitted by the first light-emitting chip after mixing with the quantum dots doped in the quantum dot layer and then excited.

[0089] Optionally, the filling process of the quantum dot layer can be as follows: after the unit board with the first light-emitting chip is aligned and bonded to the glass substrate with the groove, the first light-emitting chip is exposed through the groove. The prepared quantum dot material is dotted in the set groove in an array using a dispensing machine, thereby realizing the preparation of the quantum dot layer. After filling, the whole structure is placed in an oven for curing to realize the preparation of the quantum dot display screen.

[0090] Based on the same inventive concept, an embodiment of the present invention further provides a display device, Fig.11 is a schematic diagram of the structure of a display device provided by an embodiment of the present invention, such as Fig.11As shown, the display device 1 includes the quantum dot display screen 10 described in any of the above embodiments. Therefore, the display device 1 provided in the embodiment of the present invention has the corresponding beneficial effects in the above embodiments, which will not be repeated here. Exemplarily, the display device 1 can be an electronic device such as a display screen, a mobile phone, a computer, a smart wearable device (for example, a smart watch), and a vehicle-mounted display device, which is not limited in the embodiment of the present invention.

[0091] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A quantum dot display screen, characterized in that: include: Unit board; A glass substrate, the glass substrate is located at one side of the unit plate, and the glass substrate comprises a plurality of grooves, the grooves passing through the glass substrate; A light-emitting element, the light-emitting element is located at one side of the unit board, and the groove exposes the light-emitting element; the light-emitting element includes a first light-emitting element and a second light-emitting element having different light-emitting colors, the first light-emitting element includes a first light-emitting chip, and the second light-emitting element includes the first light-emitting chip and a quantum dot layer; and in the second light-emitting element, the quantum dot layer is located at a side of the first light-emitting chip away from the unit board; The groove includes a first opening and a second opening, the first opening is located on a side of the second opening close to the unit plate, and an orthographic projection area of ​​the first opening onto the unit plate is smaller than an orthographic projection area of ​​the second opening onto the unit plate.

2. The quantum dot display screen according to claim 1, characterized in that: The quantum dot display screen further includes a light blocking structure, the groove includes a side wall, the side wall connects the first opening and the second opening; the light blocking structure is arranged on the side wall.

3. The quantum dot display screen according to claim 2, characterized in that: The material of the light blocking structure includes ink.

4. The quantum dot display screen according to claim 1, characterized in that: The glass substrate includes a colored glass substrate.

5. The quantum dot display screen according to claim 1, characterized in that: The quantum dot display screen also includes an adhesive; The adhesive is located between the unit plate and the glass substrate.

6. The quantum dot display screen according to claim 1, characterized in that: The quantum dot display screen also includes an encapsulation layer; The encapsulation layer is located on a side of the glass substrate away from the unit plate.

7. The quantum dot display screen according to claim 1, characterized in that: The unit board includes a circuit board or a glass array substrate.

8. A method for preparing a quantum dot display screen, characterized in that: include: Providing a unit board, the unit board comprising a plurality of first light-emitting chips; A glass substrate is provided, and the glass substrate includes a plurality of grooves, and the grooves penetrate the glass substrate; wherein the grooves include a first opening and a second opening, the first opening is located on a side of the second opening close to the unit plate, and an orthographic projection area of ​​the first opening to the unit plate is smaller than an orthographic projection area of ​​the second opening to the unit plate; Aligning and laminating the unit board and the glass substrate, wherein the groove exposes the first light-emitting chip; A first light-emitting element and a second light-emitting element with different luminous colors are prepared; the first light-emitting element includes the first light-emitting chip; the second light-emitting element includes the first light-emitting element and a quantum dot layer, and in the second light-emitting element, the quantum dot layer is located on a side of the first light-emitting chip away from the unit board.

9. The preparation method according to claim 8, characterized in that: A glass substrate is provided and the glass substrate comprises a plurality of grooves, wherein the grooves penetrate the glass substrate and comprise: providing the glass substrate; The glass substrate is etched by laser to prepare a plurality of grooves, wherein the grooves penetrate the glass substrate; wherein the grooves include a first opening and a second opening, wherein the first opening is located on a side of the second opening close to the unit plate, and an orthographic projection area of ​​the first opening onto the unit plate is smaller than an orthographic projection area of ​​the second opening onto the unit plate.

10. A display device, characterized in that: A quantum dot display screen comprising any one of claims 1 to 8.

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