Display device

Abstract

The invention discloses a display device which comprises a display screen and a light control layer located on the light emitting side of the display screen, and the light control layer can deflect emergent light of the display screen in multiple directions to form multiple viewpoints so as to achieve three-dimensional display. The control layer includes a plurality of light control structures and a plurality of color conversion portions. The light control structure is used for deflecting incident light in multiple directions, the color conversion part can be arranged on the light control structure or arranged in the light control structure, the light control structure can deflect the light and achieve color conversion at the same time, and the display screen only needs to emit monochromatic light, so that color conversion is achieved. When the emergent light enters the light control layer, the emergent light can be deflected in multiple directions according to design, meanwhile, the color conversion part can emit light of other colors under excitation of the incident light, color display is achieved, a color filter does not need to be arranged, and the utilization efficiency of light energy is improved.

Description

Technical Field

[0001] The present invention relates to the field of display technologies, and particularly to a display device. Background Art

[0002] With the development of display technologies, users' demands for display devices have become diversified. Therefore, a naked-eye 3D display device that can directly view a stereoscopic image without the aid of external devices has emerged.

[0003] Current naked-eye 3D display devices can use a liquid crystal display (LCD), an organic light emitting diode (OLED) display, or a light emitting diode (LED) display. To control costs and reduce process complexity, the display screen mostly adopts a solution of a white light source with a color filter to achieve color display. However, in order to filter out colored light, the transmittance of the color filter is generally not more than 1 / 3, resulting in huge energy waste. Summary of the Invention

[0004] An embodiment of the present invention provides a display device, including:

[0005] A display screen for emitting monochromatic light; and

[0006] A light control layer located on the light-emitting side of the display screen; the light control layer is used to deflect the light emitted by the display screen in multiple directions to form multiple viewpoints, so as to achieve three-dimensional display;

[0007] Wherein, the light control layer includes: a plurality of light control structures and a plurality of color conversion parts; the light control structures are used to deflect incident light in multiple directions, and the color conversion parts are used to emit light of other colors under the excitation of the monochromatic light emitted by the display screen, so as to achieve color display.

[0008] In some embodiments of the present invention, the display screen includes a plurality of light-emitting units arranged in an array, and each light-emitting unit includes a plurality of sub-pixels; one of the light-emitting units corresponds to one of the light control structures; the light control structure is used to deflect the incident light of different sub-pixels in different directions.

[0009] In some embodiments of the present invention, the plurality of sub-pixels in each light-emitting unit are closely arranged;

[0010] The display screen further includes: a light-shielding layer located between each light-emitting unit for separating each light-emitting unit from each other.

[0011] In some embodiments of the present invention, the display screen is used to emit blue light; the plurality of color conversion parts include: a plurality of red conversion parts and a plurality of green conversion parts; the red conversion part is used to emit red light under the stimulation of blue light, and the green conversion part is used to emit green light under the stimulation of blue light;

[0012] The three adjacent light-emitting units constitute a light-emitting group; the three light-control structures corresponding to the light-emitting group are respectively a first light-control structure, a second light-control structure and a third light-control structure; wherein the first light-control structure corresponds to the red conversion part, the second light-control structure corresponds to the green conversion part, and the third light-control structure is set separately.

[0013] In some embodiments of the present invention, the display device further includes:

[0014] A filter layer is located on a side of the light control layer away from the display screen; the filter layer comprises a plurality of red filter portions, a plurality of green filter portions and a plurality of light-transmitting portions; the red filter portions are used to absorb blue light and transmit red light, the green filter portions are used to absorb blue light and transmit green light, and the light-transmitting portions are used to transmit blue light;

[0015] One of the red filter parts corresponds to one of the first light control structure settings, one of the green filter parts corresponds to one of the second light control structure settings, and one of the light-transmitting parts corresponds to one of the third light control structure settings.

[0016] In some embodiments of the present invention, the display screen is used to emit purple light; the multiple color conversion parts include: multiple red conversion parts, multiple green conversion parts and multiple blue conversion parts; the red conversion part is used to emit red light under the excitation of purple light, the green conversion part is used to emit green light under the excitation of purple light, and the blue conversion part is used to emit blue light under the excitation of purple light;

[0017] The three adjacent light-emitting units constitute a light-emitting group; the three light-control structures corresponding to the light-emitting group are respectively a first light-control structure, a second light-control structure and a third light-control structure; wherein the first light-control structure corresponds to the red conversion part, the second light-control structure corresponds to the green conversion part, and the third light-control structure corresponds to the blue conversion part.

[0018] In some embodiments of the present invention, the display device further includes:

[0019] A filter layer is located on a side of the light control layer away from the display screen; the filter layer comprises a plurality of red filter sections, a plurality of green filter sections and a plurality of blue filter sections; the red filter section is used to absorb purple light and transmit red light, the green filter section is used to absorb purple light and transmit green light, and the blue filter section is used to absorb purple light and transmit blue light;

[0020] One of the red light - filtering parts is provided corresponding to one of the first light - control structures, one of the green light - filtering parts is provided corresponding to one of the second light - control structures, and one of the blue light - filtering parts is provided corresponding to one of the third light - control structures.

[0021] In some embodiments of the present invention, the light - control structure is a microlens; the color - conversion part is located on the surface of the microlens or inside the microlens.

[0022] In some embodiments of the present invention, the multiple light - control structures form a grating; the grating includes alternately arranged light - shielding areas and light - transmitting areas, and the color - conversion part is arranged in the light - transmitting areas.

[0023] In some embodiments of the present invention, the material of the color - conversion part is a fluorescent material or a quantum - dot material.

[0024] The display device provided by the embodiments of the present invention includes: a display screen and a light - control layer located on the light - emitting side of the display screen. The light - control layer can deflect the light emitted by the display screen in multiple directions to form multiple viewpoints so as to achieve 3D display. The control layer includes: multiple light - control structures and multiple color - conversion parts. The light - control structures are used to deflect the incident light in multiple directions, and the color - conversion parts can be arranged on the light - control structures or inside the light - control structures, enabling the light - control structures to achieve color conversion while deflecting the light. The display screen only needs to emit monochromatic light, and its emitted light can be deflected in multiple directions as designed when it is incident on the light - control layer. At the same time, the color - conversion parts can also emit light of other colors under the excitation of the incident light to achieve color display, and there is no need to set up color filters, thereby improving the utilization efficiency of light energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly introduced below. Obviously, the drawings introduced below are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0026] Figure 1 It is one of the cross - sectional structure schematic diagrams of the display device provided by the embodiments of the present invention;

[0027] Figure 2 It is the cross - sectional structure schematic diagram of the display screen in the related art;

[0028] Figure 3 It is the cross - sectional structure schematic diagram of the display panel in the related art;

[0029] Figure 4The second cross-sectional structure diagram of the display device provided by the embodiment of the present invention;

[0030] Figure 5 The first light control principle diagram provided by the embodiment of the present invention;

[0031] Figure 6 The second light control principle diagram provided by the embodiment of the present invention;

[0032] Figure 7 The plan structure diagram of the light-emitting unit provided by the embodiment of the present invention;

[0033] Figure 8 The first corresponding relationship diagram between the light-emitting unit and the light control structure provided by the embodiment of the present invention;

[0034] Figure 9 The second corresponding relationship diagram between the light-emitting unit and the light control structure provided by the embodiment of the present invention;

[0035] Figure 10 The three-dimensional diagram of the positional relationship between the light control structure and the color conversion part provided by the embodiment of the present invention;

[0036] Figure 11 The first cross-sectional diagram of the positional relationship between the light control structure and the color conversion part provided by the embodiment of the present invention;

[0037] Figure 12 The second cross-sectional diagram of the positional relationship between the light control structure and the color conversion part provided by the embodiment of the present invention;

[0038] Figure 13 The first cross-sectional structure diagram of the light-emitting group provided by the embodiment of the present invention;

[0039] Figure 14 The third cross-sectional structure diagram of the display device provided by the embodiment of the present invention;

[0040] Figure 15 The second cross-sectional structure diagram of the light-emitting group provided by the embodiment of the present invention;

[0041] Figure 16 The third cross-sectional structure diagram of the light-emitting group provided by the embodiment of the present invention;

[0042] Figure 17 The fourth cross-sectional structure diagram of the light-emitting group provided by the embodiment of the present invention. Specific embodiments

[0043] To make the above objects, features, and advantages of the present invention more apparent and understandable, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. However, the exemplary embodiments can be implemented in various forms and should not be construed as limited to the embodiments described herein; on the contrary, these embodiments are provided to make the present invention more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings represent the same or similar structures, and thus the repeated description thereof will be omitted. The words expressing positions and directions described in the present invention are illustrative with reference to the drawings, but can be changed as needed, and all changes are included in the protection scope of the present invention. The drawings of the present invention are only used to illustrate the relative positional relationship and do not represent the actual scale.

[0044] With the continuous development of display technology, three-dimensional display devices have been applied in fields such as medical treatment, military, education, advertising, and gaming. Compared with two-dimensional display, three-dimensional display can make the picture become three-dimensional and realistic, and the image is no longer limited to the plane of the screen, being closer to the real world that the human eye can see.

[0045] Three-dimensional display can currently be divided into wearable three-dimensional display and autostereoscopic three-dimensional display. Wearable three-dimensional display requires wearing auxiliary devices such as glasses to view the three-dimensional display. Its main principle is to divide the image into a left-eye image and a right-eye image, and use auxiliary devices such as glasses to separate the above images, so that the left eye receives the left-eye image and the right eye receives the right-eye image. There is a certain parallax between the left-eye image and the right-eye image, which is fused into a stereoscopic image by the brain. Autostereoscopic three-dimensional display uses a light control structure to form multiple viewpoints, so that different images can be viewed at different viewpoint positions without the need to rely on other devices.

[0046] The display device provided in the embodiment of the present invention can be an autostereoscopic 3D display device. Currently, autostereoscopic 3D display devices can use LCD screens, OLED screens, or LED screens. In order to control costs and reduce process difficulties, the display screen mostly adopts a scheme of a white light source with color filters to achieve color display. However, in order to filter out colored light, the transmittance of the color filter is generally not more than 1 / 3, resulting in huge energy waste.

[0047] In view of this, the embodiment of the present invention provides a display device that can achieve color autostereoscopic 3D display without using color filters, avoid energy loss, and can also reduce costs.

[0048] Figure 1 It is one of the cross-sectional structure schematic diagrams of the display device provided in the embodiment of the present invention.

[0049] As Figure 1As shown in the figure, the display device provided by the embodiment of the present invention includes: a display screen 1 and a light control layer 2. The display screen 1 is used to emit light for image display. The light control layer 2 is located on the light-emitting side of the display screen 1 and can deflect the light emitted by the display screen 1 in multiple different directions, thereby forming multiple viewpoints and realizing three-dimensional display.

[0050] The display screen 1 can adopt display screens with mature processes at present, such as LCD display screens, OLED display screens, LED display screens, etc. In order to control costs and reduce process difficulties, the display screen 1 usually uses a white light source with color filters to achieve color display.

[0051] Figure 2 It is a schematic cross-sectional structure diagram of a display screen in the related art; Figure 3 It is a schematic cross-sectional structure diagram of a display panel in the related art; Figure 4 It is the second schematic cross-sectional structure diagram of the display device provided by the embodiment of the present invention.

[0052] Taking an LCD display screen as an example, as Figure 2 shown, the display screen 1 includes a backlight module 11 and a display panel 12. Among them, the backlight module can adopt a direct-lit backlight module or an edge-lit backlight module. Figure 2 The display screen shown adopts a direct-lit backlight module. Taking the direct-lit backlight module as an example, the backlight module 11 can include: a backplane 111, a light source 112, a reflector 113, a diffuser 114, and an optical film 115.

[0053] The backplane 111 has the functions of support and bearing. The light source 112 is located on the backplane 111. The light source 112 of the direct-lit backlight module can adopt an LED light board, which has a high brightness. The reflector 113 has multiple openings exposing the light source 112. The reflector 113 is located on the backplane 111 and exposes each light source 112. The reflector 113 can reflect the light incident on the side of the backplane 111 back to the side of the display panel again to improve the light efficiency. The diffuser 114 is located on the light-emitting side of the light source 112 and is at a certain distance from the light source 112. This distance is the light mixing distance and is used to make the light emitted by the light source 112 mix evenly. The optical film 115 is located on the side of the diffuser 114 away from the light source 112. The optical film 115 is usually a composite film and can include one or more of a prism sheet, a quantum dot film, a reflective polarizer, etc.

[0054] In the related art, in order to obtain white backlight, a blue LED can be used as the light source 112. In the optical film 115, a film with a color conversion function needs to be provided. For example, a fluorescent film or a quantum dot film can be provided in the optical film. Under the excitation of the incident blue light, red light and green light are generated. The emitted red light and green light can be mixed with the unused blue light to form white light. Alternatively, the diffusion plate 114 is set as a quantum dot diffusion plate, so that the diffusion plate 114 has both the functions of light diffusion and color conversion. However, no matter which setting method is adopted, the cost will increase.

[0055] As Figure 3 shown, the display panel 12 is a liquid crystal display panel, including: an array substrate 121, a color filter substrate 122, and a liquid crystal layer 123. The liquid crystal layer 123 is sandwiched between the array substrate 121 and the color filter substrate 122. A driving circuit is usually provided on the array substrate 121, and a color filter layer or a color filter is provided on the color filter substrate 112. An electric field is generated between the array substrate 121 and the color filter substrate 122 to twist the liquid crystal molecules in the liquid crystal layer 123, thereby regulating the transmittance of the liquid crystal layer and realizing brightness control.

[0056] As Figure 3 shown, the color filter substrate 122 may include a plurality of color filter units. In order to achieve full-color display, the color filter units may include a red unit r, a green unit g, and a blue unit b. The red unit r can filter out the red light in the white light, the green unit g can filter out the green light in the white light, and the blue unit b can filter out the blue light in the white light. And each color filter unit corresponds to a sub-pixel of the display panel. The structure of a red unit r, a green unit g, and a blue unit b and their corresponding display panel constitutes a pixel. Since the color filter unit can only filter out one primary color light in the white light, the utilization efficiency of light energy can only reach 1 / 3 at most, resulting in a large amount of energy waste.

[0057] In the embodiment of the present invention, as Figure 1 and Figure 4As shown in the figure, a light control layer 2 is provided on the light-emitting side of the display screen 1. The control layer 2 includes: a plurality of light control structures 21 and a plurality of color conversion parts 22. The light control structure 21 is used to deflect incident light in multiple directions. In specific implementation, a microlens or a grating can be used. The color conversion part 22 can be provided on the light control structure 21 or inside the light control structure 21, so that the light control structure 21 can achieve color conversion while deflecting light. At this time, the display screen 1 only needs to emit monochromatic light, and its emitted light can be deflected in multiple directions according to the design when it enters the light control layer 2. At the same time, the color conversion part can also emit light of other colors under the excitation of the incident light to achieve color display. In the display device provided by the embodiment of the present invention, there is no need to provide a color filter to filter the three primary color lights, but the color conversion part 22 is directly provided on or inside the light control structure 21, so that the light undergoes color conversion when it finally exits, improving the utilization efficiency of light energy.

[0058] As Figure 4 shown in the figure, the display screen 1 can still adopt an LCD display screen. Similarly, the light source 112 can still adopt a blue LED, but there is no need to provide a film for color conversion on the diffusion plate 114 or the optical film 115, thereby reducing costs. By integrating the color conversion part 22 into the light control layer 2, the light control layer 2 can simultaneously have the functions of controlling light deflection and color conversion, with higher integration. In specific implementation, the color conversion part 22 can adopt a fluorescent material or a quantum dot material, which is not limited herein.

[0059] Setting a microlens array or a grating on the light-emitting side of the display screen can both achieve the control of light deflection. Among them, the microlens can be a hemispherical lens, a cylindrical lens, or a prism. The grating can adopt a slit grating or a two-dimensional grating.

[0060] Figure 5 is one of the schematic diagrams of the light control principle provided by the embodiment of the present invention; Figure 6 is the second schematic diagram of the light control principle provided by the embodiment of the present invention.

[0061] As Figure 5 shown in the figure, when a microlens array is provided on the light-emitting side of the display screen, according to the number of viewpoints required, each microlens can correspond to multiple light-emitting units. Figure 5Taking the example where each microlens w corresponds to five light-emitting units A1 to A5 to generate five viewpoints for illustration. Each light-emitting unit is a pixel, which is composed of a red sub-pixel pr, a green sub-pixel pg, and a blue sub-pixel pb arranged in sequence. After the emitted light rays of the five light-emitting units are incident on the microlens w, they are deflected in five different directions, thereby generating five viewpoints S1 to S5. When taking these five light-emitting units A1 to A5 and their corresponding microlens w as a display unit, the display device can include a plurality of display units arranged in an array. Thus, the image of the display device can be viewed in the directions of the five viewpoints, and the display images viewed at each viewpoint position are different, thereby realizing multi-viewpoint autostereoscopic 3D display.

[0062] As Figure 6 shown, when a grating is provided on the light-emitting side of the display screen, the grating can be divided into a plurality of sub-gratings n. According to the number of viewpoints required, each sub-grating n can correspond to a plurality of light-emitting units. Figure 6 Still taking the example where each sub-grating n corresponds to five light-emitting units A1 to A5 to generate five viewpoints for illustration. Similarly, each light-emitting unit is a pixel, which is composed of a red sub-pixel pr, a green sub-pixel pg, and a blue sub-pixel pb arranged in sequence. The emitted light rays of the five light-emitting units can pass through the corresponding light-transmitting regions in the sub-grating n and be emitted in five different directions, thereby generating five viewpoints S1 to S5. When taking these five light-emitting units A1 to A5 and their corresponding sub-grating n as a display unit, the display device can include a plurality of display units arranged in an array. Thus, the image of the display device can be viewed in the directions of the five viewpoints, and the display images viewed at each viewpoint position are different, thereby realizing multi-viewpoint autostereoscopic 3D display.

[0063] In the embodiment of the present invention, the light control layer 2 can also be set as a microlens array or a grating, that is, the light control structure 21 can be a microlens, or the light control structure 21 can also form a grating. Using the above light control principle, the light control layer 2 can deflect the incident light rays in multiple directions to form multiple viewpoints, realizing autostereoscopic 3D display.

[0064] However, as Figure 5 and Figure 6 shown, each light-emitting unit is composed of red, green, and blue sub-pixels. A light-shielding layer m needs to be provided between the sub-pixels to separate them from each other to prevent color bleeding between different color sub-pixels. The setting of the light-shielding layer m will cause the aperture ratio of the sub-pixels to decrease, resulting in a decrease in the light transmittance.

[0065] In the embodiment of the present invention, the light control structure 21 is integrated with the color conversion unit 22. Correspondingly, the arrangement rule of the sub-pixels and the corresponding relationship between the sub-pixels and the light control structure 21 can be changed, achieving the effect of improving the aperture ratio.

[0066] Specifically, as Figure 4 shown, in the embodiment of the present invention, since the color conversion unit 22 is disposed in the outermost light control layer 2, the display screen 1 only needs to emit monochromatic light. Figure 7 is a schematic plan view of a light-emitting unit provided by an embodiment of the present invention. As Figure 7 shown, the display screen 1 includes a plurality of light-emitting units A arranged in an array. Each light-emitting unit A includes a plurality of monochromatic sub-pixels p. The number of sub-pixels p in the light-emitting unit A is determined by the number of viewpoints.

[0067] Figure 8 is one of the schematic diagrams of the corresponding relationship between the light-emitting unit and the light control structure provided by an embodiment of the present invention; Figure 9 is the second schematic diagram of the corresponding relationship between the light-emitting unit and the light control structure provided by an embodiment of the present invention.

[0068] As Figure 8 and Figure 9 shown, each light-emitting unit A corresponds to a light control structure 21. The light control structure 21 can deflect the emitted light of each sub-pixel p in the corresponding light-emitting unit A in different directions. The light control structure 21 and the color conversion unit 22 are integrated with each other. After the light is incident on the light control structure 21, it is deflected and the color conversion is completed when it exits. Then, the light is monochromatic before entering the light control layer, and there is no problem of color crosstalk. Therefore, in the embodiment of the present invention, as Figure 7 shown, the sub-pixels p in the light-emitting unit A are closely arranged, and a light-shielding layer does not need to be provided between the sub-pixels p. Thus, the aperture ratio of the sub-pixels p can be increased. A light-shielding layer m can be provided between the light-emitting units A to separate the light-emitting units A from each other.

[0069] In some embodiments, as Figure 8 shown, the light control structure 21 can be a microlens. According to needs, the microlens can adopt lens structures such as a hemispherical lens, a cylindrical lens, and a prism. In the embodiment of the present invention, the case where the microlens is a cylindrical lens is still taken as an example for specific description. As Figure 8 shown, every three adjacent light-emitting units A form a light-emitting group, and a microlens (light control structure 21) is correspondingly provided on the light-emitting side of each light-emitting unit A. Still taking the generation of five viewpoints as an example, as Figure 8 shown, each light-emitting unit A includes five sub-pixels p. The emitted light of the five sub-pixels p in each light-emitting unit converges after passing through the microlens (light control structure 21), so that the emitted light of each sub-pixel p is deflected in different directions. The emitted light of each light-emitting unit in the light-emitting group can be deflected in five directions by its corresponding microlens, so that five viewpoints S1 to S5 can be formed. The emitted light of the three light-emitting units A in the light-emitting group undergoes color conversion simultaneously when passing through their corresponding microlenses to form three primary color lights, thereby realizing color display.

[0070] Figure 10 A three-dimensional schematic diagram of the positional relationship between the light control structure and the color conversion unit provided by the embodiment of the present invention; Figure 11 One of the cross-sectional schematic diagrams of the positional relationship between the light control structure and the color conversion unit provided by the embodiment of the present invention.

[0071] When the light control structure 21 adopts a microlens, as shown in (a) of Figure 10 and Figure 11 , the color conversion unit 22 can be located inside the light control structure 21. At this time, the microlens can be made into a hollow structure, and the color conversion unit 22 can be injected into the hollow structure. Or, as shown in (b) and (c) of Figure 11 , the color conversion unit 22 can also be disposed on the surface of the light control structure 21. When the light control structure 21 adopts a microlens, usually one surface of the microlens is a curved surface and the other surface is a flat surface. Then, as shown in (b) of Figure 11 , the color conversion unit 22 can be disposed on the curved surface of the light control structure 21. As shown in (c) of Figure 11 , the color conversion unit 22 can also be disposed on the flat surface of the light control structure 21. The color conversion unit 22 can adopt a fluorescent material or a quantum dot material and can be manufactured by spraying, coating, inkjet printing or the like, which is not limited herein.

[0072] In some embodiments, as shown in Figure 9 , the light control structure 21 can adopt a grating. According to needs, the grating can adopt a slit grating or a two-dimensional grating and other structures. In the embodiment of the present invention, the case where the light control structure 21 adopts a slit grating is taken as an example for specific description. As shown in Figure 9 , every three adjacent light-emitting units A form a light-emitting group, and a grating (light control structure 21) is correspondingly disposed on the light-emitting side of each light-emitting unit A. Still taking the generation of five viewpoints as an example, as shown in Figure 9 , each light-emitting unit A includes five sub-pixels p. Only the light emitted in the set direction from the five sub-pixels p in each light-emitting unit can pass through the light-transmitting area of the grating, and the light emitted in other directions is blocked by the light-shielding area of the grating, so that the light emitted from each sub-pixel p is emitted in different directions. The light emitted from each light-emitting unit in the light-emitting group can pass through its corresponding grating and be emitted in five directions, so that five viewpoints S1 to S5 can be formed. The light emitted from the three light-emitting units A in the light-emitting group undergoes color conversion simultaneously when passing through its corresponding grating to form three primary color lights, thereby realizing color display.

[0073] Figure 12 The second cross-sectional schematic diagram of the positional relationship between the light control structure and the color conversion unit provided by the embodiment of the present invention.

[0074] When the light control structure 21 adopts a grating, as shown in Figure 12As shown, the grating may include a substrate c and a light-shielding region gm and a light-transmitting region gt that are alternately arranged on the substrate c, and the color conversion unit 22 is arranged in the light-transmitting region gt. The substrate c of the grating may adopt a transparent substrate. By forming the light-shielding region gm on the substrate c, the region where the light-shielding region gm is not formed is the light-transmitting region gt. In the embodiment of the present invention, the color conversion unit 22 may adopt a fluorescent material or a quantum dot material, and the color can be formed at the position of the light-transmitting region gt of the substrate c where the conversion unit 22 is located, realizing the integration of the light control structure 21 and the color conversion unit 22.

[0075] Figure 13 It is one of the cross-sectional structure diagrams of the light-emitting group provided by the embodiment of the present invention.

[0076] In some embodiments, as Figure 13 shown, the sub-pixel p of the display screen is used to emit blue light, and three adjacent light-emitting units A form a light-emitting group as Figure 13 shown. The color conversion unit includes: a red conversion unit 22r and a green conversion unit 22g; the red conversion unit 22r is used to emit red light under the excitation of blue light, and the green conversion unit 22g is used to emit green light under the excitation of blue light.

[0077] The three light control structures 21 corresponding to the light-emitting group are respectively a first light control structure 211, a second light control structure 212, and a third light control structure 213; wherein, the first light control structure 211 is correspondingly provided with the red conversion unit 22r, the second light control structure 212 is correspondingly provided with the green conversion unit 22g, and the third light control structure 213 is separately provided. Thus, each light-emitting unit in each light-emitting group can respectively emit red light, green light, and blue light after passing through its corresponding light control structure and color conversion unit, realizing color display.

[0078] Figure 14 It is one of the cross-sectional structure diagrams of the display device provided by the embodiment of the present invention.

[0079] In some embodiments, as Figure 14 shown, the display device further includes a filter layer 3 located on the side of the light control layer 2 away from the display screen 1. Due to the limitation of the conversion efficiency of the color conversion unit, the light emitted from the display screen to the color conversion unit 22 cannot be 100% converted. Therefore, there may be some crosstalk between the unconverted light and the light emitted by the color conversion unit. Setting the filter layer 3 can filter out these unconverted lights, thereby improving the color purity of the emitted light.

[0080] Figure 15 It is one of the cross-sectional structure diagrams of the light-emitting group provided by the embodiment of the present invention.

[0081] Taking the case where the display screen 1 emits blue light as an example, the filter layer includes a plurality of red filter portions lr, a plurality of green filter portions lg, and a plurality of light-transmitting portions lt; wherein, the red filter portion lr is used to absorb blue light and transmit red light, the green filter portion lg is used to absorb blue light and transmit green light, and the light-transmitting portion lt is used to transmit blue light. As Figure 15 shown, for one light-emitting group, one red filter portion lr is correspondingly arranged with one first light control structure 211, one green filter portion lg is correspondingly arranged with one second light control structure 212, and one light-transmitting portion lt is correspondingly arranged with one third light control structure 213. Thus, the light emitted from the first light control structure 211 is all red light, the light emitted from the second light control structure 212 is all green light, and the light emitted from the third light control structure 213 is all blue light, realizing the emission of three primary color lights.

[0082] Figure 16 FIG. 3 is a schematic cross-sectional structure diagram of a light-emitting group provided by an embodiment of the present invention. Figure 17 FIG. 4 is a schematic cross-sectional structure diagram of a light-emitting group provided by an embodiment of the present invention.

[0083] In some embodiments, as Figure 16 and Figure 17 shown, the sub-pixel p of the display screen is used to emit purple light, and three adjacent light-emitting units A form a light-emitting group as shown in FIGS. 2 and 3. The color conversion portion includes: a red conversion portion 22r, a green conversion portion 22g, and a blue conversion portion 22b; the red conversion portion 22r is used to emit red light under the excitation of purple light, the green conversion portion 22g is used to emit green light under the excitation of purple light, and the blue conversion portion 22b is used to emit blue light under the excitation of purple light. Figure 16 and Figure 17 shown. The three light control structures corresponding to the light-emitting group are respectively a first light control structure 211, a second light control structure 212, and a third light control structure 213; wherein, the first light control structure 211 is correspondingly arranged with the red conversion portion 22r, the second light control structure 212 is correspondingly arranged with the green conversion portion 22g, and the third light control structure 213 is correspondingly arranged with the blue conversion portion 22b. Thus, each light-emitting unit in each light-emitting group can respectively emit red light, green light, and blue light after passing through its corresponding light control structure and color conversion portion, realizing color display.

[0084] The three light control structures corresponding to the light-emitting group are respectively a first light control structure 211, a second light control structure 212, and a third light control structure 213; wherein, the first light control structure 211 is correspondingly arranged with the red conversion portion 22r, the second light control structure 212 is correspondingly arranged with the green conversion portion 22g, and the third light control structure 213 is correspondingly arranged with the blue conversion portion 22b. Thus, each light-emitting unit in each light-emitting group can respectively emit red light, green light, and blue light after passing through its corresponding light control structure and color conversion portion, realizing color display.

[0085] In some embodiments, the filter layer includes a plurality of red filter portions lr, a plurality of green filter portions lg, and a plurality of blue filter portions lb; wherein, the red filter portion lr is used to absorb purple light and transmit red light, the green filter portion lg is used to absorb purple light and transmit green light, and the blue filter portion lb is used to absorb purple light and transmit blue light. As Figure 17As shown, for a light-emitting group, a red light filter portion lr is provided corresponding to a first light control structure 211, a green light filter portion lg is provided corresponding to a second light control structure 212, and a blue light filter portion lb is provided corresponding to a third light control structure 213. Thus, the light emitted from the first light control structure 211 is all red light, the light emitted from the second light control structure 212 is all green light, and the light emitted from the third light control structure 213 is all blue light, realizing the emission of three primary color lights.

[0086] In the embodiment of the present invention, only the case where the display screen 1 adopts an LCD display screen is taken as an example to illustrate the structure of the display device. In practical applications, the display screen 1 can also adopt an OLED display screen, an LED display screen, or a Micro LED display screen. When the display screen 1 in the display device adopts different types of display screens, the structure of the light control layer 2 can be the same.

[0087] Although the preferred embodiments of the present invention have been described, those skilled in the art can make additional changes and modifications to these embodiments once they know the basic creative concept. Therefore, the appended claims are intended to be construed to include the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0088] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims

1. A display device, characterized in that, Comprising: A display screen for emitting monochromatic light; And A light control layer located on the light-emitting side of the display screen; The light control layer is used to deflect the light emitted by the display screen in multiple directions to form multiple viewpoints for realizing three-dimensional display; Wherein, the light control layer includes: a plurality of light control structures and a plurality of color conversion parts; the light control structures are used to deflect incident light in multiple directions, and the color conversion parts are used to emit light of other colors under the excitation of the monochromatic light emitted by the display screen for realizing color display.

2. The display device according to claim 1, characterized in that, The display screen includes a plurality of light-emitting units arranged in an array, and each light-emitting unit includes a plurality of sub-pixels; one of the light-emitting units corresponds to one of the light control structures; the light control structure is used to deflect the incident light of different sub-pixels in different directions.

3. The display device according to claim 2, wherein The plurality of sub-pixels in each of the light-emitting units are closely arranged; The display screen further includes: a light-shielding layer located between each of the light-emitting units for separating each of the light-emitting units from each other.

4. The display device according to claim 2, wherein The display screen is used to emit blue light; The plurality of color conversion parts include: a plurality of red conversion parts and a plurality of green conversion parts; the red conversion parts are used to emit red light under the excitation of blue light, and the green conversion parts are used to emit green light under the excitation of blue light; Adjacent three of the light-emitting units form a light-emitting group; the three light control structures corresponding to the light-emitting group are respectively a first light control structure, a second light control structure, and a third light control structure; wherein, the first light control structure is correspondingly provided with the red conversion part, the second light control structure is correspondingly provided with the green conversion part, and the third light control structure is separately provided.

5. The display device according to claim 4, characterized in that, The display device further includes: A filter layer located on the side of the light control layer away from the display screen; the filter layer includes a plurality of red filter parts, a plurality of green filter parts, and a plurality of light-transmitting parts; the red filter parts are used to absorb blue light and transmit red light, the green filter parts are used to absorb blue light and transmit green light, and the light-transmitting parts are used to transmit blue light; One of the red filter parts is correspondingly arranged for one of the first light control structures, one of the green filter parts is correspondingly arranged for one of the second light control structures, and one of the light-transmitting parts is correspondingly arranged for one of the third light control structures.

6. The display device according to claim 2, wherein The display screen is used to emit purple light; The plurality of color conversion parts include: a plurality of red conversion parts, a plurality of green conversion parts, and a plurality of blue conversion parts; the red conversion parts are used to emit red light under the excitation of purple light, the green conversion parts are used to emit green light under the excitation of purple light, and the blue conversion parts are used to emit blue light under the excitation of purple light; Adjacent three of the light-emitting units form a light-emitting group; the three light control structures corresponding to the light-emitting group are respectively a first light control structure, a second light control structure, and a third light control structure; wherein, the first light control structure is correspondingly provided with the red conversion part, the second light control structure is correspondingly provided with the green conversion part, and the third light control structure is correspondingly provided with the blue conversion part.

7. The display device according to claim 6, wherein The display device further includes: A light filtering layer, located on a side of the light control layer away from the display screen; the light filtering layer includes a plurality of red light filtering portions, a plurality of green light filtering portions, and a plurality of blue light filtering portions; the red light filtering portion is configured to absorb purple light and transmit red light, the green light filtering portion is configured to absorb purple light and transmit green light, and the blue light filtering portion is configured to absorb purple light and transmit blue light; One of the red light filtering portions is provided corresponding to one of the first light control structures, one of the green light filtering portions is provided corresponding to one of the second light control structures, and one of the blue light filtering portions is provided corresponding to one of the third light control structures.

8. The display device according to claim 4 or 6, characterized in that, The light control structure is a microlens; the color conversion portion is located on the surface of the microlens or inside the microlens.

9. The display device according to claim 4 or 6, characterized in that, The plurality of light control structures form a grating; the grating includes an alternating light shielding region and a light transmitting region, and the color conversion portion is disposed in the light transmitting region.

10. The display device according to claim 4 or 6, characterized in that, The material of the color conversion portion is a fluorescent material or a quantum dot material.

Images