Display device, control method, and display apparatus

Abstract

A display device, a control method and a display apparatus, the insulating layer comprises a first structure and a second structure arranged in sequence along a second direction and / or a third direction, the second structure comprises a plurality of first quantum dots, the first quantum dots display green color under irradiation of a blue backlight, the backlight module comprises a plurality of red backlights and a plurality of blue backlights, at least one red backlight is opposite to the first structure or the second structure in a first direction, at least one blue backlight is opposite to the first structure or the second structure in the first direction, the red backlights and the blue backlights are adjacent along the second direction and / or the third direction, the red backlights irradiate the first structure and / or the second structure to make the light passing through the first structure and / or the second structure red light respectively, the blue backlights irradiate the first structure to make the light passing through the first structure blue light, and the blue backlights are also used for irradiating the plurality of first quantum dots to make the light passing through the second structure green light, so that the cost of the display device is reduced.

Description

Technical Field

[0001] This invention relates to the field of display technology, and more specifically to a display device, a control method, and a display equipment. Background Technology

[0002] Currently, LCD monitors typically employ field-sequential color display to display images of different colors, and their high color purity has made them popular with users. In existing technology, the backlight module of an LCD monitor uses red, green, and blue backlights, and the transmittance of each backlight is adjusted by the liquid crystal driving layer to display different colored images on the LCD screen. These colors are then synthesized by the human eye to create a color image. This technology requires three colors of backlight to achieve color imaging, resulting in high costs. Summary of the Invention

[0003] The purpose of this invention is to provide a display device, control method, and display equipment that improves the problem of high cost of display devices.

[0004] To achieve the objectives of this invention, the following technical solution is provided: In a first aspect, embodiments of this application provide a display device, including an insulating layer and a backlight module sequentially disposed along a first direction; the insulating layer includes a first structure and a second structure sequentially disposed along a second direction and / or a third direction, the second structure including a plurality of first quantum dots, the first quantum dots being used to display green under illumination by a blue backlight element, the first direction, the second direction and the third direction intersecting each other; the backlight module includes a plurality of red backlight elements and a plurality of blue backlight elements, at least one of the red backlight elements being opposite to the first structure or the second structure in the first direction, at least one of the blue backlight elements being opposite to the first structure or the second structure in the first direction, the red backlight elements and the blue backlight elements being adjacent along the second direction and / or the third direction, the red backlight elements being used to illuminate the first structure and / or the second structure to make the light passing through the first structure and / or the second structure red light respectively, the blue backlight elements being used to illuminate the first structure to make the light passing through the first structure blue light, the blue backlight elements being used to illuminate the plurality of first quantum dots to make the light passing through the second structure green light.

[0005] By integrating a second structure containing first quantum dots within an insulating layer and a first structure, and in conjunction with a backlight module capable of outputting red and blue light, in the second structure, a blue backlight element illuminates multiple first quantum dots to display green light. Compared to existing technologies that require backlights of three colors—red, green, and blue—this technology eliminates the need for a green backlight, thus achieving three-primary-color display and reducing costs.

[0006] In one embodiment, the orthographic projection of a plurality of the first quantum dots in the first direction overlaps with the orthographic projection of the portion of the backlight module corresponding to the second structure in the first direction.

[0007] By making the orthographic projection of multiple first quantum dots in the first direction overlap with the orthographic projection of the corresponding second structure of the backlight module in the first direction, the blue light emitted by the backlight module can be fully and completely irradiated onto all the first quantum dots, ensuring the output efficiency of green light.

[0008] In one embodiment, at least some of the first quantum dots are arranged sequentially adjacent to each other in the first direction; and / or, at least some of the first quantum dots are arranged sequentially adjacent to each other in the second direction; and / or, at least some of the first quantum dots are arranged sequentially adjacent to each other in the third direction.

[0009] By arranging at least some of the first quantum dots adjacent to each other in the first, second, and third directions, the filling density and distribution uniformity of the first quantum dots can be guaranteed in the second structure. This ensures that blue light can fully contact and emit light with a sufficient amount of first quantum dots as it passes through the second structure, thus avoiding the problem of insufficient green light conversion and blue-biased emitted light caused by sparse distribution of quantum dots.

[0010] In one embodiment, the second structure is provided with a first through slot, the first through slot accommodating the first quantum dot, and the first through slot extending through the first direction.

[0011] A first through-slot is provided in the second structure along the first direction to accommodate the first quantum dot. The sidewall of the through-slot forms a limit on the quantum dot to prevent irregular movement of the quantum dot.

[0012] In one embodiment, the cross-sectional shape of the first through groove along the second direction or the third direction is trapezoidal. The first through groove includes a first opening and a second opening that are opposite to each other and spaced apart along the first direction. The size of the first opening is smaller than the size of the second opening, and the second opening is located on the side of the first opening away from the backlight module.

[0013] By designing the cross-section of the first channel to be trapezoidal, with a smaller first opening closer to the backlight module and a larger second opening further away, the backlight, after entering through the narrow opening, gradually expands along the channel's sidewalls, fully illuminating the first quantum dots throughout the channel. Simultaneously, the trapezoidal sidewalls reflect and guide the generated green light, directing more green light towards the second opening, reducing reflection losses within the channel, and improving the light extraction efficiency and brightness.

[0014] In one embodiment, the display device further includes a first substrate and an encapsulation layer. The first substrate is in close contact with one end of the insulating layer along the first direction. The first substrate is disposed between the insulating layer and the backlight module. The first substrate is located on the side of the first opening facing away from the second opening. The encapsulation layer is in close contact with the other end of the insulating layer along the first direction. The encapsulation layer is disposed on the side of the second opening facing away from the first opening.

[0015] A first substrate is disposed on the first opening side of the first channel, and an encapsulation layer is disposed on the second opening side. Together with the sidewall of the channel, they form a closed space to completely seal the first quantum dot. The first substrate and the encapsulation layer are respectively attached to both sides of the insulating layer to prevent the quantum dot from moving from the two openings of the channel and to ensure the stability of the quantum dot's position.

[0016] In one embodiment, the display device further includes a first electrode layer, a liquid crystal module layer, and a second electrode layer. The first electrode layer is in close contact with and connected to the surface of the encapsulation layer facing away from the insulating layer. The liquid crystal module layer is in close contact with and connected to the surface of the first electrode layer facing away from the encapsulation layer. The second electrode layer is in close contact with and connected to the surface of the liquid crystal module layer facing away from the first electrode layer. The liquid crystal module layer is used to adjust the brightness of the red light, the blue light, and the green light.

[0017] The first electrode layer, the liquid crystal module layer, and the second electrode layer are stacked sequentially on the outside of the encapsulation layer, so that the red light, the blue light, and the green light pass through the liquid crystal dimming structure along the first direction to adjust their brightness.

[0018] In one embodiment, the number of the first structure is multiple, the number of the second structure is multiple, and the first structure and the second structure are arranged alternately along the second direction; and / or, the first structure and the second structure are arranged alternately along the third direction.

[0019] By alternating the arrangement of multiple first and second structures along the second and / or third directions, a regularly arranged color array can be formed, and the alternating arrangement of structures ensures the uniformity of the distribution of each color.

[0020] Secondly, this application also provides a control method applied to a display device as described in the first aspect or any of the claims in the first aspect. The display device includes an insulating layer and a backlight module sequentially disposed along a first direction. The insulating layer includes a first structure and a second structure sequentially disposed along a second direction or a third direction. The second structure includes a plurality of first quantum dots, each of which is used to display green under illumination by a blue backlight. The first direction, the second direction, and the third direction intersect each other. The backlight module is disposed opposite to both the first structure and the second structure in the first direction. The backlight module includes a red backlight and a blue backlight. The method includes: The first structure and the second structure are illuminated by the red backlight, so that the light passing through the first structure and the second structure is red light; The first structure is illuminated by the blue backlight component so that the light passing through the first structure is blue light; The blue backlight illuminates a plurality of the first quantum dots so that the light passing through the second structure is green light.

[0021] Thirdly, this application also provides a display device, including a timing controller and a display apparatus as described in the first aspect or any of the claims in the first aspect, wherein the timing controller is electrically connected to the display apparatus and is used to transmit timing signals of the display apparatus to the display apparatus. Attached Figure Description

[0022] Figure 1 This is a field sequence schematic diagram of a prior art display device according to one embodiment; Figure 2 This is a first structural schematic diagram of a display device according to one embodiment; Figure 3 This is a schematic diagram of a second structure of a display device according to one embodiment; Figure 4 This is a field sequence schematic diagram of a display device according to one embodiment; Figure 5 This is a schematic diagram illustrating the principle of increasing white light to suppress color shift in one embodiment.

[0023] Figure 6 This is a flowchart illustrating a control method according to one embodiment; Figure 7 This is a schematic diagram of the structure of a display device according to one embodiment.

[0024] Explanation of reference numerals in the attached figures: 10-Insulating layer, 11-First structure, 12-Second structure, 121-First quantum dot, 122-First through-slot, 1221-First opening, 1222-Second opening, 20-Backlight module, 21-Red backlight component, 22-Blue backlight component, 30-First substrate, 40-Encapsulation layer, 50-First electrode layer, 60-Liquid crystal module layer, 70-Second electrode layer, 80-Pixel, 81-Data line, 82-Gate line, 900-Display device, 901-Driver circuit, 902-Timing controller, X-First direction, Y-Second direction, Z-Third direction. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Unless otherwise defined, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used in this invention includes any and all combinations of one or more of the associated listed items.

[0027] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0028] Currently, LCD monitors typically use field-sequential color display to display images of different colors, and their high color purity has made them popular with users. Please refer to [link / reference]. Figure 1 In existing technologies, the backlight module of a liquid crystal display uses three colors of backlight: red, green, and blue. The transmittance of each backlight is adjusted by the liquid crystal driving layer to display images of different colors on the liquid crystal screen. Finally, a color image is synthesized in the human eye. This technology requires three colors of backlight to achieve a color image, which is costly.

[0029] For the aforementioned issues, please refer to Figure 2 , Figure 2This is a schematic diagram of a display device provided in an embodiment of this application. The display device includes an insulating layer 10 and a backlight module 20 sequentially disposed along a first direction X. The insulating layer 10 includes a first structure 11 and a second structure 12 sequentially disposed along a second direction Y and / or a third direction Z. The second structure 12 includes a plurality of first quantum dots 121, which are used to display green under illumination by a blue backlight element 22. The first direction X, the second direction Y, and the third direction Z intersect each other. The backlight module 20 includes a plurality of red backlight elements 21 and a plurality of blue backlight elements 22. At least one red backlight element 21 is adjacent to the first structure 11 or the second structure 12 in the first direction X. Yes, at least one blue backlight element 22 is opposite to the first structure 11 or the second structure 12 in the first direction X, and the red backlight element 21 and the blue backlight element 22 are adjacent to each other in the second direction Y and / or the third direction Z. The red backlight element 21 is used to illuminate the first structure 11 and / or the second structure 12 so that the light passing through the first structure 11 and / or the second structure 12 is red light, respectively. The blue backlight element 22 is used to illuminate the first structure 11 so that the light passing through the first structure 11 is blue light. The blue backlight element 22 is also used to illuminate a plurality of first quantum dots 121 so that the light passing through the second structure 12 is green light.

[0030] Optionally, this application provides an application scenario for the driving circuit 901, which includes a user, a display device 900, and a server. Optionally, the display device 900 may be a liquid crystal display (LCD), and this application does not limit the structure of the display device 900. Optionally, a user may use multiple display devices 900. Optionally, multiple display devices 900 may transmit image data to a single server.

[0031] Optionally, the first direction X is the thickness direction of the display device, which is the stacking arrangement direction of the insulating layer 10 and the backlight module 20.

[0032] Optionally, the second direction Y and the third direction Z are two directions of the display device that intersect each other (usually perpendicular to each other). Optionally, please combine... Figure 3 Multiple pixels 80 are arranged in an array, with the second direction Y and the third direction Z corresponding to the row direction and column direction of the pixels 80. Each column of data lines 81 is connected to a column of pixels 80, and each row of gate lines 82 is connected to a row of pixels 80.

[0033] Optionally, the insulating layer 10 is a film layer made of transparent insulating material (such as silicon nitride, photoresist, silicon dioxide, etc.) used to carry and separate the color conversion structure, while also serving as an electrical insulator.

[0034] Optionally, the first structure 11 does not include a completely transparent area of ​​the color conversion material, through which backlight can be directly transmitted.

[0035] Optionally, the second structure 12 is a color conversion region in the insulating layer 10 carrying the first quantum dot 121, which can convert incident blue light into green light. Optionally, the first structure 11 and the second structure 12 are an integral structure.

[0036] Optionally, at least one red backlight element 21 is opposite to the first structure 11 in the first direction X, at least one red backlight element 21 is opposite to the second structure 12 in the first direction X, at least one blue backlight element 22 is opposite to the first structure 11 in the first direction X, and at least one blue backlight element 22 is opposite to the second structure 12 in the first direction X.

[0037] Optionally, the first quantum dot 121 is a nanoluminescent material based on the quantum size effect, which can emit high-purity green visible light when excited by blue light of a specific wavelength.

[0038] Optionally, the backlight module 20 does not provide a functional module for displaying a backlight source, but consists of an independently controllable array of micro light-emitting devices. Optionally, multiple red backlight elements 21 and multiple blue backlight elements 22 are on the same light-emitting back panel.

[0039] Optionally, the red backlight 21 and the blue backlight 22 can emit red and blue wavelengths of light, respectively. Optionally, the first quantum dot 121 can be a perovskite material, cadmium selenide / zinc sulfide, or indium phosphide / zinc sulfide.

[0040] Optionally, in this application, green and blue emit light at different locations, and green and blue are spatially separated. In the prior art, green and blue emit light at the same location in a time-division manner. The imaging of different primary color subframes emitted in a time-division manner on the retina is spatiotemporally misaligned. After the persistence of vision in the human eye, color artifacts will be formed at the edges of objects, i.e., color separation phenomenon. Compared with the prior art, this application transforms green and blue from being in the same spatial location to being in different spatial locations. The spatial position difference between green and blue is far below the spatial resolution limit of the human eye, and spatial color separation is completely imperceptible. Furthermore, the color separation in the time dimension is weakened due to the reuse of red and the reduction of brightness misalignment. The overall color separation performance is significantly better than the pure time-multiplexing scheme, thus reducing the color separation phenomenon.

[0041] Optionally, the display device is a liquid crystal display, with the first direction X being the thickness direction of the device, the second direction Y being the 80-row direction of pixels, and the third direction Z being the 80-column direction of pixels. The first direction X, the second direction Y, and the third direction Z are perpendicular to each other. The insulating layer 10 is a silicon nitride inorganic insulating material. The first structure 11 and the second structure 12 are arranged sequentially along the second direction Y. Multiple first quantum dots 121 particles are uniformly dispersed and doped in the second structure 12. The backlight module 20 is a micro light-emitting diode array. Red backlight element 21 and blue backlight element 22 are arranged alternately adjacent to each other along the second direction Y. The orthogonal projection of each red backlight element 21 on the first direction X simultaneously covers one first structure 11 and one second structure 12. Each blue backlight element 22 corresponds to a set of first structures 11 and second structures 12.

[0042] Optionally, if using a 240Hz resolution display device, please refer to [reference needed]. Figure 1 In existing technology, 80 pixels are converted between different grayscale values, dividing a frame period into three independent subframes: R, G, and B. Each subframe must undergo a complete process of data loading, liquid crystal response (backlight black insertion off), and backlight illumination. The three subframes correspond to three liquid crystal response processes, requiring three black insertion dead zones with the backlight off. The high proportion of black insertion time directly compresses the effective light-emitting time, with each primary color only able to illuminate within 1 / 3 of the frame period. After subtracting the black insertion, the effective light-emitting duty cycle is less than 1 / 3. Due to the persistence of vision in the human eye, display brightness is directly positively correlated with the backlight illumination duty cycle. The lower the duty cycle, the lower the perceived brightness under the same backlight power. In this diagram, the response time of the liquid crystal molecules themselves requires 2ms. During this process, the backlight module 20 is off (because the liquid crystal molecules are unstable during this process, their brightness changes). Therefore, the actual illumination time of the backlight module 20 is only about 2.6ms. In this application, the lighting time of this solution is 4.6ms, which is longer than that of the prior art. This is because the number of subframes is reduced from 3 to 2, and the number of black insertions in one frame is reduced from 3 to 2. The saved black insertion time can be converted into backlight lighting time, which directly increases the effective light emission ratio within the frame period. The increase in lighting duty cycle will be integrated by the human eye into higher perceived brightness. Under the effect of visual persistence, combined with the fact that the peak power of the backlight module 20 is exactly the same, the display brightness will be positively correlated with the duty cycle, which also increases the brightness.

[0043] By integrating a second structure 12 containing first quantum dots 121 and a first structure 11 within an insulating layer 10, and cooperating with a backlight module 20 capable of outputting red and blue light, in the second structure 12, a blue backlight element 22 illuminates multiple first quantum dots 121 to display green light. Compared to the prior art which requires backlights of three colors—red, green, and blue—there is no need to set a green backlight, thus achieving three-primary-color display and reducing costs.

[0044] In one possible example, the orthographic projection of multiple first quantum dots 121 in the first direction X overlaps with the orthographic projection of a portion of the second structure 12 corresponding to the backlight module 20 in the first direction X.

[0045] Optionally, the part of the backlight module 20 corresponding to the second structure 12 is the backlight emitting area of ​​the backlight module 20 that is opposite to the second structure 12 in the first direction X and where light can be incident on the second structure 12.

[0046] Optionally, the backlight module 20 is a micro-LED array, with multiple first quantum dots 121 uniformly dispersed and filled in the second structure 12. When projected vertically along the first direction X, the projection set of all the first quantum dots 121 completely covers the projection outline of the second structure 12, and the projection area completely overlaps with the projection of the light-emitting surface of a single blue backlight element 22 facing the second structure 12 in the backlight module 20. This projection overlap design allows all the effective outgoing light emitted by the blue backlight element 22 to be incident into the interior of the second structure 12 along the first direction X, fully illuminating the first quantum dots 121 inside. This avoids blue light leaking out from the side of the quantum dot area, causing color shift and a decrease in color purity, and maximizes the use of blue light energy to improve green light conversion efficiency and reduce ineffective light loss.

[0047] By making the orthographic projection of multiple first quantum dots 121 in the first direction X overlap with the orthographic projection of the part of the second structure 12 of the backlight module 20 in the first direction X, the blue light emitted by the backlight module 20 is fully and completely irradiated onto all the first quantum dots 121, ensuring the output efficiency of green light.

[0048] In one possible example, at least some of the first quantum dots 121 are arranged adjacent to each other in the first direction X; and / or, at least some of the first quantum dots 121 are arranged adjacent to each other in the second direction Y; and / or, at least some of the first quantum dots 121 are arranged adjacent to each other in the third direction Z.

[0049] Optionally, sequentially adjacent arrangement refers to the first quantum dot 121 particles being arranged closely one by one in the corresponding direction.

[0050] Optionally, within the second structure 12, multiple first quantum dots 121 are arranged in a face-centered cubic close-packed configuration. In the first direction X (thickness direction), the quantum dot particles are stacked adjacently along the incident light direction, forming a total of three layers. Within each layer, the quantum dots are arranged sequentially and closely adjacently along the pixel row 80 direction in the second direction Y, with the surfaces of adjacent quantum dot particles in contact without gaps. This arrangement allows blue light to collide with the quantum dot particles multiple times along the propagation path in the first direction X, significantly increasing the absorption probability of blue light and reducing unabsorbed transmitted blue light. Simultaneously, the continuous arrangement of quantum dots in the second direction Y ensures uniform green light emission within the entire in-plane area of ​​the second structure 12, without local dark spots, thus improving the luminous uniformity and color purity of the green sub-pixel 80.

[0051] By arranging at least some of the first quantum dots 121 sequentially adjacent to each other in the first direction X, the second direction Y, and the third direction Z, the filling density and distribution uniformity of the first quantum dots 121 can be guaranteed in the second structure 12. This ensures that the blue light can fully contact and emit light with a sufficient amount of first quantum dots 121 as it passes through the second structure 12, thus avoiding the problem of insufficient green light conversion and blue-biased emitted light caused by sparse distribution of quantum dots.

[0052] In one possible example, the second structure 12 is provided with a first through slot 122, which accommodates the first quantum dot 121 and extends through the first direction X.

[0053] Optionally, the first through groove 122 refers to a groove cavity structure that penetrates the insulating layer 10 along the first direction X in the corresponding area of ​​the second structure 12. The first through groove 122 is used to accommodate the first quantum dot 121 material and limit the diffusion range of the first quantum dot 121.

[0054] Optionally, a through groove extending along the first direction X extends from one end face of the insulating layer 10 near the backlight module 20 to the other end face of the insulating layer 10 away from the backlight module 20, forming a completely through cavity.

[0055] Optionally, in the preset area corresponding to the second structure 12, a first through groove 122 that is completely through is provided along the first direction X. The sidewall of the through groove is the body material of the insulating layer 10. The first quantum dot 121 is dropped into the first through groove 122 by inkjet printing.

[0056] Optionally, inkjet printing is used to fill the through groove with ink for the first quantum dot 121. After heating and curing, the first quantum dot 121 is confined inside the first through groove 122. The first through groove 122 can prevent the quantum dot from diffusing into the adjacent first structure 11 region and causing color mixing. At the same time, the sidewall of the first through groove 122 provides physical support and protection for the quantum dot.

[0057] A first through groove 122 extending along the first direction X is provided in the second structure 12 to accommodate the first quantum dot 121. The sidewall of the through groove forms a limit on the quantum dot to prevent irregular movement of the quantum dot.

[0058] In one possible example, the cross-section of the first through groove 122 along the second direction Y or the third direction Z is trapezoidal. The first through groove 122 includes a first opening 1221 and a second opening 1222 that are opposite to and spaced apart along the first direction X. The size of the first opening 1221 is smaller than the size of the second opening 1222. The second opening 1222 is located on the side of the first opening 1221 away from the backlight module 20.

[0059] Optionally, the cross section refers to the section obtained by cutting the first through groove 122 along the second direction Y or the third direction Z, that is, the section perpendicular to the extension direction of the through groove.

[0060] Optionally, the first opening 1221 is the end opening of the first through slot 122 near the backlight module 20, serving as the light incident end. Optionally, the second opening 1222 is the end opening of the first through slot 122 away from the backlight module 20, serving as the light emitting end.

[0061] Optionally, the cross-section of the first through groove 122 along the second direction Y is an isosceles trapezoid. The width of the first opening 1221 near the backlight module 20 is 8μm, and the width of the second opening 1222 away from the backlight is 10μm. The depth of the first through groove 122 is the same as the thickness of the insulating layer 10, which is 5μm. The angle between the sidewall of the first through groove 122 and the first direction X is 12°. The inclined sidewall of the trapezoidal structure of the first through groove 122 can reflect and guide light. When the blue backlight enters from the first opening 1221, some of the obliquely propagating blue light will be reflected towards the light-emitting side when it hits the inclined sidewall, thus recovering the light that was originally dispersed to the side and guiding it towards the light-emitting direction, thereby improving the light extraction efficiency.

[0062] Optionally, the second opening 1222 is larger than the first opening 1221, so that the emitted green light has a larger effective light-emitting surface, expands the light-emitting angle, and improves the brightness attenuation and color shift problems when viewed at a large angle.

[0063] By setting the cross-section of the first channel 122 to a trapezoidal shape, with the first opening 1221 closer to the backlight module 20 being smaller and the second opening 1222 farther from the backlight module 20 being larger, the backlight can be incident from the narrow opening and gradually expand along the sidewall of the channel, fully illuminating the first quantum dots 121 throughout the channel. Simultaneously, the trapezoidal sidewall can reflect and guide the generated green light, causing more green light to exit towards the second opening 1222, reducing reflection loss of green light inside the channel and improving the light extraction efficiency and brightness of the green light.

[0064] In one possible example, the display device further includes a first substrate 30 and an encapsulation layer 40. The first substrate 30 is tightly connected to one end of the insulating layer 10 along the first direction X. The first substrate 30 is disposed between the insulating layer 10 and the backlight module 20. The first substrate 30 is located on the side of the first opening 1221 facing away from the second opening 1222. The encapsulation layer 40 is tightly connected to the other end of the insulating layer 10 along the first direction X. The encapsulation layer 40 is disposed on the side of the second opening 1222 facing away from the first opening 1221.

[0065] Optionally, the first substrate 30 is a transparent support substrate, typically a glass substrate. The first substrate 30 is disposed between the insulating layer 10 and the backlight module 20, and is used to support the insulating layer 10 and the functional film layer above it.

[0066] Optionally, the encapsulation layer 40 is a transparent and dense film layer prepared on the light-emitting side of the insulating layer 10. The encapsulation layer 40 can seal the first quantum dot 121 in the channel, isolate water vapor and oxygen, and prevent the first quantum dot 121 from failing.

[0067] Optionally, the first substrate 30 is a glass substrate, which is tightly bonded to the backlight side surface of the insulating layer 10 with a highly transparent optical adhesive. The flat surface of the first substrate 30 completely covers the first opening 1221 of the first through groove 122, sealing the first quantum dot 121 inside the first through groove 122.

[0068] Optionally, the encapsulation layer 40 is an inorganic multilayer film of alternating silicon nitride and silicon oxide, which is prepared on the light-emitting side surface of the insulating layer 10 by plasma-enhanced chemical vapor deposition, completely covering the second opening 1222 of the second through groove.

[0069] Optionally, the first substrate 30 serves as both a support base for the insulating layer 10 and the color conversion structure, and also prevents the heat generated by the backlight module 20 from being directly transferred to the first quantum dot 121, thus acting as a thermal buffer.

[0070] A first substrate 30 is disposed on the side of the first opening 1221 of the first channel 122, and an encapsulation layer 40 is disposed on the side of the second opening 1222. Together with the sidewall of the channel, they form a closed space to completely seal the first quantum dot 121. The first substrate 30 and the encapsulation layer 40 are respectively attached to the two sides of the insulating layer 10 to prevent the quantum dot from moving from the two openings of the channel and to ensure the stability of the quantum dot position.

[0071] In one possible example, the display device further includes a first electrode layer 50, a liquid crystal module layer 60, and a second electrode layer 70. The first electrode layer 50 is in close contact with and connected to the surface of the encapsulation layer 40 facing away from the insulating layer 10. The liquid crystal module layer 60 is in close contact with and connected to the surface of the first electrode layer 50 facing away from the encapsulation layer 40. The second electrode layer 70 is in close contact with and connected to the surface of the liquid crystal module layer 60 facing away from the first electrode layer 50. The liquid crystal module layer 60 is used to adjust the brightness of red light, blue light, and green light.

[0072] Optionally, the first electrode layer 50 and the second electrode layer 70 are electrode layers made of transparent conductive material, and the two layers work together to form a driving electric field. Optionally, the first electrode layer 50 is a pixel 80 electrode, and the second electrode layer 70 is a common electrode.

[0073] Optionally, the liquid crystal module layer 60 includes liquid crystal molecules, upper and lower alignment films, and spacers. The polarization state of the incident light is changed by controlling the deflection of the liquid crystal molecules through an electric field, and the brightness is adjusted in conjunction with the polarizer of the display device.

[0074] Optionally, the second electrode layer 70 is a continuous transparent common electrode, which is disposed on the surface of the encapsulation layer 40 facing away from the insulating layer 10 and is tightly attached to the encapsulation layer 40.

[0075] Optionally, the liquid crystal module layer 60 includes upper and lower alignment films and positive liquid crystal molecules. The liquid crystal layer cell thickness is 3μm and is disposed between the first electrode layer 50 and the second electrode layer 70. The first electrode layer 50 is a patterned pixel 80 electrode layer, and each sub-pixel 80 corresponds to an independent pixel 80 electrode.

[0076] Optionally, when the display device is working, red, green, and blue light are emitted from the backlight module 20, pass through the color conversion structure of the insulating layer 10, and then pass through the encapsulation layer 40 and the first electrode layer 50 to enter the liquid crystal module layer 60. By applying driving voltages of different amplitudes between the first electrode layer 50 and the second electrode layer 70, the deflection angle of the liquid crystal molecules is changed, thereby controlling the polarization direction of the three colors of light passing through the liquid crystal layer. In conjunction with the upper and lower polarizers of the display device, the brightness adjustment of different gray levels is realized, and finally, full-color gray level display is achieved.

[0077] The first electrode layer 50, the liquid crystal module layer 60 and the second electrode layer 70 are stacked sequentially on the outside of the encapsulation layer 40, so that red light, blue light and green light pass through the liquid crystal dimming structure along the first direction X to adjust its brightness.

[0078] In one possible example, there are multiple first structures 11 and multiple second structures 12, with the first structures 11 and the second structures 12 arranged alternately along the second direction Y; and / or, the first structures 11 and the second structures 12 arranged alternately along the third direction Z.

[0079] Optionally, alternating arrangement refers to the first structure 11 and the second structure 12 being arranged in a cyclical pattern in the order of first structure 11, second structure 12, first structure 11, second structure 12, forming a periodic repeating array.

[0080] Optionally, the first structure 11 and the second structure 12 on the insulating layer 10 are arranged alternately only along the second direction Y (pixel row direction). Each first structure 11 and one second structure 12 form a basic pixel 80 unit. They are repeatedly arranged along the row direction to form a complete pixel 80 row. In the third direction Z (pixel column direction), the same type of structure extends continuously to form a strip structure.

[0081] Optionally, this arrangement corresponds to a strip-shaped backlight assembly, with red and blue backlight strips alternating along the row direction. Each row of the structure corresponds to an independent backlight, which can greatly simplify the design of the backlight driving circuit 901, reduce driving difficulty and hardware cost. The continuous column structure can ensure the uniformity of light emission in the column direction and reduce pixel splicing marks.

[0082] By alternating the arrangement of multiple first structures 11 and second structures 12 along the second direction Y and / or the third direction Z, a regularly arranged color array can be formed, and the alternating arrangement of the structure ensures the uniformity of the distribution of each color.

[0083] Please see Figure 6 , Figure 6 This is a flowchart illustrating a control method provided in an embodiment of this application. An example of this control method being applied to a control process is provided. The method includes the following steps S301-S303, wherein, S301: The first structure 11 and the second structure 12 are illuminated by the red backlight 21 so that the light passing through the first structure 11 and the second structure 12 is red light.

[0084] Optional, please refer to Figure 2 and Figure 4 When the LCD displays a red image, the red backlight 21 is powered on and illuminated. The red light is incident perpendicularly along the first direction X and passes through the transparent insulating area of ​​the first structure 11 and the quantum dot filled area of ​​the second structure 12. The first quantum dot 121 has no absorption or conversion effect on the red light, so the red light is directly transmitted. Therefore, the light emitted from both areas is red light.

[0085] S302: The first structure 11 is illuminated by the blue backlight 22 so that the light passing through the first structure 11 is blue light.

[0086] Optional, please refer to Figure 2 and Figure 4 When the blue backlight component 22 is lit, the blue light corresponding to the first structure 11 is directly transmitted as blue light, and the blue light corresponding to the second structure 12 excites the quantum dots to generate green light.

[0087] S303: The first quantum dots 121 are illuminated by the blue backlight 22 so that the light passing through the second structure 12 is green light.

[0088] Optional, please refer to Figure 2 and Figure 4 When a green screen is displayed, only the blue backlight element 22 corresponding to the second structure 12 is driven to light up, and the blue light excites the first quantum dot 121 to emit green light.

[0089] Optionally, the backlights of the three primary colors—red, green, and blue—are refreshed sequentially within the display cycle of one frame (usually the reciprocal of the LCD screen's refresh rate). The transmittance of each backlight is adjusted by the liquid crystal driving layer, thus displaying sub-images of different colors sequentially on the LCD screen in a time-sequential manner. Utilizing the hysteresis effect of the human eye, the three color sub-images are fused in time, and the three frames of sub-images are ultimately synthesized into a color image in the human eye. In field-sequential color display, due to eye movement, the red, green, and blue components of the same pixel (80 points) displayed in a time-sequential manner will fall on different positions on the retina. Therefore, viewers usually perceive color separation at the edges of the displayed image, thus reducing the quality of the displayed image. To suppress color separation, please refer to... Figure 5 Existing technologies have improved the backlighting method for field-sequential color displays, such as by adding white light, as shown in the figure: first red and second red, first green and second green, first blue and second blue. However, this affects the color gamut and causes color cast.

[0090] Optionally, field-sequential color display divides a color image into sub-frames of red, green, and blue primary colors and displays them sequentially. These three sub-frames divide the display cycle of a single image into three time periods. The display process of each sub-frame is the same, mainly including three stages: data loading, liquid crystal response, and backlight illumination. To ensure the accuracy of the displayed grayscale, the backlight module is generally turned off during the liquid crystal response stage of the three sub-frames, which is called backlight black insertion. During the backlight illumination stage of the three sub-frames, the backlight module refreshes the backlight sources of the three primary colors of red, green, and blue in sequence. The liquid crystal panel displays the sub-images of the three color fields in a time-division manner based on the transmittance of each color field.

[0091] Please see Figure 7 , Figure 7 This is a schematic diagram of the structure of a display device 900 provided in an embodiment of this application. For example... Figure 7 As shown, the display device 900 includes a timing controller 902 and a display device as described above. The timing controller 902 is electrically connected to the display device and is used to transmit timing signals of the display device to the display device.

[0092] The above description discloses only one preferred embodiment of the present invention, and should not be construed as limiting the scope of the present invention. Those skilled in the art will understand that all or part of the processes of the above embodiments can be implemented, and equivalent changes made in accordance with the claims of the present invention are still within the scope of the present invention.

Claims

1. A display device, characterized in that, Includes an insulating layer and a backlight module arranged sequentially along the first direction; The insulating layer includes a first structure and a second structure arranged sequentially along a second direction and / or a third direction. The second structure includes a plurality of first quantum dots, which are used to display green under blue backlight illumination. The first direction, the second direction and the third direction intersect each other. The backlight module includes a plurality of red backlight elements and a plurality of blue backlight elements. At least one of the red backlight elements is opposite to the first structure or the second structure in the first direction, and at least one of the blue backlight elements is opposite to the first structure or the second structure in the first direction. The red backlight elements and the blue backlight elements are adjacent along the second direction and / or the third direction. The red backlight elements are used to illuminate the first structure and / or the second structure to make the light passing through the first structure and / or the second structure red light, respectively. The blue backlight elements are used to illuminate the first structure to make the light passing through the first structure blue light. The blue backlight elements are also used to illuminate the plurality of the first quantum dots to make the light passing through the second structure green light.

2. The display device according to claim 1, characterized in that, The orthographic projection of the plurality of first quantum dots in the first direction overlaps with the orthographic projection of the portion of the second structure corresponding to the backlight module in the first direction.

3. The display device according to claim 2, characterized in that, At least some of the first quantum dots are arranged adjacent to each other in the first direction; and / or, at least some of the first quantum dots are arranged adjacent to each other in the second direction; and / or, at least some of the first quantum dots are arranged adjacent to each other in the third direction.

4. The display device according to claim 1, characterized in that, The second structure is provided with a first through slot, which contains the first quantum dot and extends through the first direction.

5. The display device according to claim 4, characterized in that, The first through groove has a trapezoidal cross-sectional shape along the second direction or the third direction. The first through groove includes a first opening and a second opening that are opposite to each other and spaced apart along the first direction. The size of the first opening is smaller than the size of the second opening. The second opening is located on the side of the first opening away from the backlight module.

6. The display device according to claim 5, characterized in that, The display device further includes a first substrate and an encapsulation layer. The first substrate is tightly connected to one end of the insulating layer along the first direction. The first substrate is disposed between the insulating layer and the backlight module. The first substrate is located on the side of the first opening facing away from the second opening. The encapsulation layer is tightly connected to the other end of the insulating layer along the first direction. The encapsulation layer is disposed on the side of the second opening facing away from the first opening.

7. The display device according to claim 6, characterized in that, The display device further includes a first electrode layer, a liquid crystal module layer, and a second electrode layer. The first electrode layer is in close contact with and connected to the surface of the encapsulation layer facing away from the insulating layer. The liquid crystal module layer is in close contact with and connected to the surface of the first electrode layer facing away from the encapsulation layer. The second electrode layer is in close contact with and connected to the surface of the liquid crystal module layer facing away from the first electrode layer. The liquid crystal module layer is used to adjust the brightness of the red light, the blue light, and the green light.

8. The display device according to any one of claims 1 to 7, characterized in that, The number of the first structure is multiple, the number of the second structure is multiple, and the first structure and the second structure are arranged alternately along the second direction; and / or, the first structure and the second structure are arranged alternately along the third direction.

9. A control method, characterized in that, The control method is applied to a display device as described in any one of claims 1 to 8, the display device comprising an insulating layer and a backlight module sequentially disposed along a first direction, the insulating layer comprising a first structure and a second structure sequentially disposed along a second direction or a third direction, the second structure comprising a plurality of first quantum dots, each first quantum dot being used to display green under illumination by a blue backlight element, the first direction, the second direction, and the third direction intersecting each other, the backlight module being disposed opposite to both the first structure and the second structure in the first direction, the backlight module comprising a red backlight element and a blue backlight element, the method comprising: The first structure and the second structure are illuminated by the red backlight, so that the light passing through the first structure and the second structure is red light; The first structure is illuminated by the blue backlight component so that the light passing through the first structure is blue light; The blue backlight illuminates a plurality of the first quantum dots so that the light passing through the second structure is green light.

10. A display device, characterized in that, The device includes a timing controller and a display device as described in any one of claims 1 to 8, wherein the timing controller is electrically connected to the display device and is used to transmit timing signals of the display device to the display device.

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