Display device

Abstract

The embodiment of the present invention relates to the field of display technology, and discloses a display device, including: a shooting unit, and a liquid luminescent layer; the shooting unit has an optical path for receiving ambient light outside the display device; the liquid luminescent layer includes a first luminescent unit located in the direction of the optical path and a second luminescent unit located outside the direction of the optical path; the first luminescent unit and the second luminescent unit each include flowable quantum dot particles; when the display device is in a display state, the quantum dot particles of the first luminescent unit are located in the area of ​​the optical path, and when the display device is in a shooting state, all or part of the quantum dot particles in the first luminescent unit move outside the area of ​​the optical path. The display device provided by the present invention can improve the shooting performance of the display device without affecting the display effect of the display device.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of display technology, and in particular to a display device. Background Art

[0002] OLED (Organic Light-Emitting Diode) is called organic light-emitting diode. OLED display technology has many advantages such as full solid state, active light emission, high contrast, ultra-thin, low power consumption, fast effect speed, wide working range, easy to realize flexible display and 3D display, etc., which makes it currently used in many display devices, such as televisions and mobile devices. With the advancement of technology and the increasing demand of consumers for large-screen mobile phones, mobile phone manufacturers have been committed to improving the screen-to-body ratio of mobile phones. From the so-called borderless mobile phones to the notch screen, to the design of the water drop screen and the lifting camera, as well as the launch of the folding screen, the development trend of mobile phones towards true full-screen is relatively clear, and the under-screen camera technology is considered to be the killer solution for true full-screen.

[0003] However, the inventors have found that there are at least the following problems in the prior art: the display area above the under-screen camera has pixels, which affects the transmittance of the area, resulting in insufficient light entering the under-screen camera and unclear images taken by the front camera. Summary of the invention

[0004] An object of the embodiments of the present invention is to provide a display device, which can improve the shooting performance of the display device without affecting the display effect of the display device.

[0005] To solve the above technical problems, an embodiment of the present invention provides a display device, comprising: a shooting unit, and a liquid light-emitting layer; the shooting unit has an optical path for receiving ambient light; the liquid light-emitting layer comprises a first light-emitting unit located in the direction of the optical path and a second light-emitting unit located outside the direction of the optical path; when the display device is in a display state, the quantum dot particles of the first light-emitting unit are located within the area of ​​the optical path, and when the display device is in a shooting state, the quantum dot particles in the first light-emitting unit flow to outside the area of ​​the optical path.

[0006] Compared with the prior art, the embodiments of the present invention provide a liquid luminescent layer formed by flowable quantum dot particles, and the liquid luminescent layer includes a first light-emitting unit and a second light-emitting unit. When the display device is in a display state, the first light-emitting unit is located in the light path of the shooting unit, that is, the area above the shooting unit has the first light-emitting unit and can be displayed, thereby realizing full-screen display of the display device and improving the display effect of the display device; when the display device is in a shooting state, the quantum dot particles in the first light-emitting unit flow outside the light path, so that the light path of the shooting unit will not be blocked by the quantum dot particles in the first light-emitting unit, which can effectively prevent the quantum dot particles from blocking external light from entering the shooting unit, thereby improving the light transmittance, so that the display device can improve the shooting performance of the shooting unit while meeting the full-screen display.

[0007] In addition, the quantum dot particles include at least a first quantum dot and a second quantum dot, and the first quantum dot and the second quantum dot are used to form a pixel unit; the display device also includes a first substrate, and the first substrate is arranged on a side of the liquid light-emitting layer close to the shooting unit; a plurality of spaced-apart circuit base points are provided on the first substrate, and when the circuit base points are energized, the quantum dot particles are adsorbed to the area of ​​the liquid light-emitting layer facing the circuit base points, wherein each of the circuit base points adsorbs at least one of the first quantum dot and / or at least one of the second quantum dot.

[0008] In addition, the first substrate includes a first area located within the area of ​​the optical path and a second area located outside the area of ​​the optical path; the display device also includes a control circuit, which is electrically connected to the circuit base points; when the display device is in a display state, the control circuit controls the circuit base points of the first area and the second area to be powered on; when the display device is in a shooting state, the control circuit controls the circuit base points of the first area to be powered off and the circuit base points of the second area to be powered on.

[0009] In addition, the first substrate is at least partially located in the area of ​​the optical path, and the display device also includes a second substrate and a control circuit. The second substrate is arranged on a side of the first substrate away from the liquid luminous layer, and the second substrate is located outside the area of ​​the optical path; a plurality of circuit base points distributed at intervals are provided on the second substrate, and when the display device is in a display state, the control circuit controls the circuit base points of the first substrate to be powered on, and the circuit base points of the second substrate to be powered off; when the display device is in a shooting state, the control circuit controls the circuit base points of the first substrate to be powered off, and the circuit base points of the second substrate to be powered on.

[0010] In addition, the display device also includes a quantum dot storage cavity and a quantum dot transmission pipeline, the quantum dot storage cavity is connected to the first light-emitting unit via the quantum dot transmission pipeline, and the quantum dot storage cavity is located outside the optical path; the display device also includes a control unit, when the display device is in a display state, the control unit controls the quantum dot particles in the quantum dot storage cavity to flow to the area where the first light-emitting unit is located to form the first light-emitting unit; when the display device is in a shooting state, the control unit controls all or part of the quantum dot particles in the first light-emitting unit to flow to the quantum dot storage cavity.

[0011] In addition, the display device further includes a blocking layer, which is disposed between the first light-emitting unit and the second light-emitting unit and is used to block the mutual flow of quantum dots in the first light-emitting unit and the second light-emitting unit.

[0012] In addition, the first light-emitting unit includes a first storage cavity and liquid quantum dots that can flow into and out of the first storage cavity, and the second light-emitting unit includes a second storage cavity and liquid quantum dots that can flow into and out of the second storage cavity; the display device also includes a control unit, and when the display device is in a shooting state, the control unit controls the liquid quantum dots in the first storage cavity to flow to the second storage cavity.

[0013] In addition, the display device also includes a refraction unit, which is arranged on a side of the first light-emitting unit close to the shooting unit, and the refraction unit is located in the area of ​​the light path; the refraction unit is filled with a transparent liquid filler, and the transparent liquid filler is used to increase the refractive index of the refraction unit.

[0014] In addition, the refraction unit includes a first concave lens, a convex lens and a second concave lens which are stacked, and the first concave lens is arranged adjacent to the shooting unit; the first concave lens, the convex lens and the second concave lens are all hollow lenses, and the first concave lens, the convex lens and the second concave lens are all filled with the transparent liquid filler; the display device also includes a liquid material storage cavity, a first liquid material transmission pipeline, a second liquid material transmission pipeline and a third liquid material transmission pipeline; the first concave lens is connected to the liquid material storage cavity via the first liquid material transmission pipeline, the convex lens is connected to the liquid material storage cavity via the second liquid material transmission pipeline, and the third liquid material transmission pipeline is connected to the liquid material storage cavity via the third liquid material transmission pipeline; the display device also includes a control unit, which is used to control the transparent liquid filler in the liquid material storage cavity to be injected into the refraction unit, or to extract the transparent liquid filler in the refraction unit into the liquid material storage cavity.

[0015] In addition, when the display device is in a shooting state, the density of quantum dot particles in the first light-emitting unit is less than the density of quantum dot particles in the second light-emitting unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0017] Figure 1 is a schematic structural diagram of a display device according to a first embodiment of the present invention;

[0018] Figure 2 is a schematic structural diagram of a display device of another structure according to the first embodiment of the present invention;

[0019] Figure 3 is a schematic diagram of quantum dot particle luminescence imaging according to the first embodiment of the present invention;

[0020] Figure 4 is a schematic structural diagram of a display device according to a second embodiment of the present invention;

[0021] Figure 5 is a schematic structural diagram of a display device according to a third embodiment of the present invention;

[0022] Figure 6 is a schematic structural diagram of a display device of another structure according to a third embodiment of the present invention;

[0023] Figure 7is a schematic structural diagram of a display device according to a fourth embodiment of the present invention;

[0024] Figure 8 is a schematic structural diagram of a refraction unit according to a fourth embodiment of the present invention;

[0025] Fig. 9 It is a system framework diagram of a display device according to a fourth embodiment of the present invention. Specific embodiments

[0026] At present, terminal products need to place photosensitive modules such as cameras under the screen, but there is a luminous material layer under the existing screen, resulting in low light transmittance of the terminal products. When photosensitive modules such as cameras collect external light signals, the screen cannot ensure that sufficient light passes through the screen, making it difficult for photosensitive modules such as cameras to collect sufficient light, thereby affecting the shooting performance of photosensitive modules such as cameras.

[0027] In view of the above problems, the present invention provides a display device. By setting a liquid luminescent layer, when the display device is in a shooting state, the quantum dot particles located in the optical path of the shooting unit can flow to the outside of the optical path, which can effectively prevent the quantum dot particles from blocking external light from entering the shooting unit, thereby improving the light transmittance, so that the display device can improve the shooting performance of the shooting unit while meeting the full-screen display requirements.

[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, it will be appreciated by those skilled in the art that in the embodiments of the present invention, many technical details are provided to enable the reader to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical scheme claimed in the present application can be implemented.

[0029] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0030] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, "a plurality of" means two or more unless otherwise specifically defined.

[0031] The terms "mounted", "connected" and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection, an electrical connection or a connection capable of mutual communication; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0032] The first embodiment of the present invention relates to a display device 100, and the specific structure is as Figure 1 shown, including:

[0033] A photographing unit 1 and a liquid light-emitting layer 2; the photographing unit 1 has an optical path 10 for receiving ambient light; the material of the liquid light-emitting layer 2 includes flowable quantum dot particles 20, and the liquid light-emitting layer 2 includes a first light-emitting unit 21 and a second light-emitting unit 22; when the display device 100 is in a display state, the first light-emitting unit 21 is located within the area of the optical path 10, and when the display device 100 is in a photographing state, all or part of the quantum dot particles 20 in the first light-emitting unit 21 move outside the area of the optical path 10.

[0034] Specifically, the quantum dot particles 20 refer to some extremely tiny semiconductor nanocrystals that cannot be seen by the naked eye. Generally speaking, the quantum dot particles are composed of a combination of zinc, cadmium, selenium and sulfur atoms. The quantum dot particles have a distinctive property: whenever stimulated by light or electricity, the quantum dot particles will emit colored light, and the color of the light is determined by the composition material, size and shape of the quantum dot particles. This property enables the quantum dot particles to change the color of the light emitted by the light source. The light-emitting principle of the liquid light-emitting layer 2 is as follows: the liquid light-emitting layer 2 includes an electron layer, a quantum dot layer and a hole layer arranged in a stacked manner. The electrons in the electron layer and the holes in the hole layer converge in the quantum dot layer to form excitons, and light is emitted through the recombination of the excitons.

[0035] It can be understood that when the display device 100 is in a display state, the density of the quantum dot particles 20 in the first light-emitting unit 21 is equal to the density of the quantum dot particles 20 in the second light-emitting unit 22, so as to ensure the uniformity of the displayed image; when the display device 100 is in a shooting state, all or part of the quantum dot particles in the first light-emitting unit 21 are moved outside the first light-emitting unit 21, so that the density of the quantum dot particles 20 in the first light-emitting unit 21 is less than the density of the quantum dot particles 20 in the second light-emitting unit 22.

[0036] Compared with the prior art, the embodiments of the present invention provide a liquid luminescent layer 2 formed by flowable quantum dot particles 20, and the liquid luminescent layer 2 includes a first light-emitting unit 21 and a second light-emitting unit 22. When the display device 100 is in a display state, the first light-emitting unit 21 is located in the optical path 10 of the shooting unit 1, that is, the area above the shooting unit 1 has the first light-emitting unit 21 and can be displayed, thereby realizing full-screen display of the display device 100 and improving the display effect of the display device 100; when the display device 100 is in a shooting state, the quantum dot particles 20 in the first light-emitting unit 21 flow to the outside of the optical path 10, so that the optical path 10 of the shooting unit 1 will not be blocked by the quantum dot particles 20 in the first light-emitting unit 21, which can effectively prevent the quantum dot particles 20 from blocking external light from entering the shooting unit 1, thereby improving the light transmittance, so that the display device 100 can improve the shooting performance of the shooting unit 1 while meeting the full-screen display.

[0037] It is worth noting that the liquid light-emitting layer 2 in this embodiment can emit light and display an image on a display screen through electroluminescent technology under the control of a circuit driving system such as current, voltage, and electrons. For example, the quantum dot particles 20 themselves can emit light and mix colors to produce an image through the design of a driving circuit. The design of the driving circuit includes but is not limited to: electronic circuit driving design, control of the number of electron injections, control of voltage or current, wavelength change control by an auxiliary light unit, temperature change by a heating unit, and other driving methods. For ease of understanding, this embodiment takes the electronic circuit driving design as an example to specifically explain how to control the liquid light-emitting layer 2 to emit light and display an image on a display screen in this embodiment:

[0038] Please also see Figure 2 and Figure 3, taking the quantum dot particles 20 including red quantum dots 201, green quantum dots 202 and blue quantum dots 203 as an example, one red quantum dot 201, one green quantum dot 202 and one blue quantum dot 203 together form a pixel unit. The display device 100 also includes a first substrate 3, which is arranged on the side of the liquid luminescent layer 2 close to the shooting unit 1; a plurality of spaced circuit base points 30 are arranged on the first substrate 3, and when the circuit base points 30 are powered on, the quantum dot particles 20 are adsorbed to the area of ​​the liquid luminescent layer 2 facing the circuit base points 30, wherein, Figure 2 Each circuit base point 30 shown adsorbs a red quantum dot 201 , a green quantum dot 202 and a blue quantum dot 203 .

[0039] It is worth mentioning that in this embodiment, the quantum dot particles 20 include red quantum dots 201, green quantum dots 202 and blue quantum dots 203, which is only an example of the most common pixel unit structure. For self-luminous technology, there are currently four types of display particles, red, green, blue and white, that make up a pixel unit. In addition, the quantum dot particles 20 may also include a combination of non-red quantum dots, non-green quantum dots and non-blue quantum dots. In other words, this embodiment does not specifically limit the types of quantum dots included in the quantum dot particles 20, and can be set according to actual needs.

[0040] It should also be noted that, in this embodiment, each circuit base point 30 adsorbs a red quantum dot 201, a green quantum dot 202, and a blue quantum dot 203, which is only one way to achieve uniform distribution of pixel units. In practical applications, uniform distribution of pixel units can also be achieved in other ways, such as: 1. There are three different types of circuit base points, which adsorb red quantum dots 201, green quantum dots 202, and blue quantum dots 203 respectively. Each type of circuit base point can adsorb at least one quantum dot of a color corresponding to its type, and the three different types of circuit base points are evenly distributed on the first substrate 3; 2. One circuit base point adsorbs multiple pixel units, that is, each circuit base point adsorbs multiple red quantum dots 201, multiple green quantum dots 202, and multiple blue quantum dots 203. It can be understood that the above-mentioned several ways are only several feasible embodiments for achieving uniform distribution of pixel units. This embodiment does not specifically limit how to achieve uniform distribution of pixels by adsorbing quantum dots through circuit base points, and can be set according to actual needs.

[0041] Specifically, Figure 2Schematic diagram of another feasible structure of the display device 100 of this embodiment. The first substrate 3 is arranged below the shooting unit 1, so as to prevent the first substrate 3 from blocking external light from entering the shooting unit 1. The first substrate 3 can be formed of a polymer material such as polyimide (PI), polycarbonate (PC), polyethersulfone (PES), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyarylate (PAR) or glass fiber reinforced plastic (FRP). The substrate 8 can be transparent, translucent or opaque to provide support for the formation of each film layer arranged thereon.

[0042] Figure 3 This is a schematic diagram of the luminescence imaging of quantum dot particles in this embodiment. Figure 3 As shown in FIG. 1 , the circuit control unit 4 can be used for electronic control such as quantum dot luminescence and display, and the circuit control unit 4 may include: a first substrate 3 enclosed under the liquid luminescent layer 2 and a related power supply and circuit system. The first substrate 3 can be used to modify the spatial position distribution of quantum dot particles. Figure 3 There are pre-made circuit nodes 30 in the first substrate 3 of a, and the circuit control unit 4 can provide specific voltage and other electronic signals for each circuit node 30. Figure 3 As shown in b, the quantum dot particles 20 exist in two physical distribution states. The red quantum dots 201, green quantum dots 202 and blue quantum dots 203 in state A are randomly distributed, and the red quantum dots 201, green quantum dots 202 and blue quantum dots 203 in state B are uniformly distributed. At this time, the red quantum dots 201, green quantum dots 202 and blue quantum dots 203 are locked in the corresponding matching spatial arrangement positions through the voltage provided by each circuit base point 30 in the first substrate 3.

[0043] Please see again Figure 1 The first substrate 3 includes a first area 31 located within the optical path 10 and a second area 32 located outside the optical path 10; the display device 100 also includes a control circuit (not shown), and the control circuit is electrically connected to the circuit base point 30; when the display device 100 is in a display state, the control circuit controls the circuit base points 30 in the first area 31 and the second area 32 to be powered on; when the display device is in a shooting state, the control circuit controls the circuit base points 30 in the first area 31 to be powered off, and the circuit base points 30 in the second area 32 to be powered on.

[0044] It can be seen from the above description that when the circuit base point 30 is not powered, the quantum dot particles 20 are randomly distributed in the liquid light-emitting layer 2. When the circuit base point 30 is powered, the quantum dot particles 20 will lock the corresponding matching spatial arrangement position through the voltage provided by each circuit base point 30 in the first substrate 3. Therefore, when the display device 100 is in a display state, the circuit base points 30 of the first area 31 and the second area 32 are both energized, so that the liquid light-emitting layer 2 facing the first area 31 and the second area 32 has uniformly distributed quantum dot particles 20, thereby realizing full-screen display of the display device 100; when the display device 100 is in a shooting state, the circuit base points 30 of the first area 31 are powered off and the circuit base points 30 of the second area 32 are powered on, so that the quantum dot particles 20 in the liquid light-emitting layer 2 are all gathered in the liquid light-emitting layer facing the second area 32, that is, the liquid light-emitting layer facing the first area has no quantum dot particles 20. Since the first area 31 is located in the optical path 10 and the second area 32 is located outside the optical path 10, the quantum dot particles 20 will not block the optical path 10, thereby improving the light transmittance and further improving the shooting performance of the shooting unit 1.

[0045] Preferably, the second area 32 has an annular area surrounding the first area 31 (the width of the annular area can be set according to actual needs), and a circuit base point with a higher density than other areas can be set in the annular area. When the display device 100 is in a display state, the circuit base points in the annular area with a redundant density compared to other areas of the first area 31 and the second area 32 are not energized to achieve uniformity of the display screen; when the display device 100 is in a shooting state, all circuit base points in the annular area are energized to increase the adsorption force on the quantum dot particles 20 in the first area 31, ensuring that the quantum dot particles 20 in the first area 31 are all adsorbed outside the first area 31.

[0046] The second embodiment of the present invention relates to a display device 200. The second embodiment is substantially the same as the first embodiment, except that: Figure 4 As shown: the first substrate 3 is at least partially located in the optical path 10, and the display device 200 also includes a second substrate 5 and a control circuit (not shown in the figure), the second substrate 5 is arranged on the side of the first substrate 3 away from the liquid luminescent layer 2, and the second substrate 5 is located outside the optical path; a plurality of spaced-apart circuit points 50 are provided on the second substrate 5, and when the display device 200 is in a display state, the control circuit controls the circuit points 30 of the first substrate 3 to be powered on, and the circuit points 50 of the second substrate 5 to be powered off; when the display device 200 is in a shooting state, the control circuit controls the circuit points 30 of the first substrate 3 to be powered off, and the circuit points 50 of the second substrate 5 to be powered on.

[0047] Specifically, the display device 200 in this embodiment also includes a glass cover plate (not shown) arranged on the side of the liquid light-emitting layer 2 away from the shooting unit 1, the orthographic projection area of ​​the first substrate 3 on the glass cover plate coincides with the area where the glass cover plate is located, and the orthographic projection area of ​​the second substrate 5 on the glass cover plate is spaced apart from the orthographic projection area of ​​the shooting unit 2 on the glass cover plate. When the display device 200 is in a display state, the circuit base points 30 of the first substrate 3 are powered on and the circuit base points 50 of the second substrate 5 are powered off, so that the liquid light-emitting layer 2 facing the first substrate 3 has uniformly distributed quantum dot particles 20, thereby realizing full-screen display of the display device 200; when the display device 200 is in a shooting state, the circuit base points 30 of the first substrate 3 are powered off and the circuit base points 50 of the second substrate 5 are powered on, that is, the liquid light-emitting layer 2 facing the shooting unit 1 has no quantum dot particles 20, so that the quantum dot particles 20 will not block the light path 10, thereby improving the light transmittance, and then improving the shooting performance of the shooting unit 1. In addition, since the circuit base points 50 of the second substrate 5 are powered on, the display device 200 can also display the picture normally when it is in the shooting state, thereby improving the user experience.

[0048] It is not difficult to find that this embodiment can be implemented in conjunction with the first embodiment. The relevant technical details mentioned in the first embodiment are still valid in this embodiment, and in order to reduce repetition, they are not repeated here. Accordingly, the relevant technical details mentioned in this embodiment can also be applied in the first embodiment.

[0049] The third embodiment of the present invention relates to a display device 300. The third embodiment is substantially the same as the first embodiment, and the main difference is that: Figure 5 As shown: the display device 300 also includes a quantum dot storage cavity 6 and a quantum dot transmission pipeline 61, the quantum dot storage cavity 6 is connected to the first light-emitting unit 21 via the quantum dot transmission pipeline 61, and the quantum dot storage cavity 6 is located outside the optical path 10; the display device 300 also includes a control unit (not shown in the figure), when the display device 300 is in a display state, the control unit controls the quantum dot particles 20 in the quantum dot storage cavity 6 to flow to the area where the first light-emitting unit 21 is located to form the first light-emitting unit 21; when the display device 300 is in a shooting state, the control unit controls the quantum dot particles 20 in the first light-emitting unit 21 to flow to the quantum dot storage cavity 6.

[0050] Specifically, the display device 300 of this embodiment further includes a blocking layer 7, which is disposed between the first light-emitting unit 21 and the second light-emitting unit 22 and is used to block the mutual flow of quantum dot particles in the first light-emitting unit 21 and the second light-emitting unit 22. By providing the blocking layer 7, it is ensured that when the display device 300 is in the shooting state, there are no quantum dot particles 20 in the area above the shooting unit 1, thereby avoiding the situation that "after the quantum dot particles 20 in the first light-emitting unit 21 flow to the quantum dot storage cavity 6, the quantum dot particles 20 in the second light-emitting unit 22 flow to the area where the first light-emitting unit 21 is located, resulting in the quantum dot particles 20 still blocking the entry of external light above the shooting unit 1, thereby resulting in poor shooting performance of the shooting unit 1".

[0051] More specifically, when the display device 300 is in a display state, the control unit transfers the quantum dot particles 20 in the quantum dot storage cavity 6 to the area where the first light-emitting unit 21 is located, and closes the transmission channel 61 to prevent the quantum dot particles 20 in the first light-emitting unit 21 from flowing back to the quantum dot storage cavity 6, thereby enabling full-screen display of the display device 300; when the display device 300 is in a shooting state, the control unit opens the transmission channel 61, and transfers all the quantum dot particles 20 in the first light-emitting unit 21 to the quantum dot storage cavity 6, and closes the transmission channel 61 again, so that the quantum dot particles 20 in the first light-emitting unit 21 will not block the light path 10, thereby improving the light transmittance, and then improving the shooting performance of the shooting unit 1.

[0052] See also Figure 6 , which is a schematic diagram of the structure of a display device 300 in another feasible embodiment of the present invention. The first light-emitting unit 21 includes a first storage cavity 211 and quantum dot particles 20 that can flow into and out of the first storage cavity 211, and the second light-emitting unit 22 includes a second storage cavity 221 and quantum dot particles 20 that can flow into and out of the second storage cavity 221; the display device 300 also includes a control unit (not shown in the figure), and when the display device 300 is in a shooting state, the control unit controls the quantum dot particles 20 in the first storage cavity 211 to flow to the second storage cavity 221.

[0053] It can be understood that, through the setting of such a structure, only two storage cavities are required to realize the mutual flow and mutual isolation of the quantum dot particles 20 between the first light-emitting unit 21 and the second light-emitting unit 22. Specifically, a transmission pipeline (not shown) is provided between the first storage cavity 211 and the second storage cavity 221. When the display device 300 is in the display state, the control unit transmits the quantum dot particles 20 in the second storage cavity 221 to the first storage cavity 211 to form the first light-emitting unit 21, thereby realizing the full-screen display of the display device 300; when the display device 300 is in the shooting state, the control unit opens the transmission pipeline, transmits all the quantum dot particles 20 in the first storage cavity 211 to the second storage cavity 221, and closes the transmission pipeline again, so that the quantum dot particles 20 in the first light-emitting unit 21 will not block the light path 10, thereby improving the light transmittance, and further improving the shooting performance of the shooting unit 1.

[0054] It is not difficult to find that this embodiment can be implemented in conjunction with the first embodiment and the second embodiment. The relevant technical details mentioned in the first embodiment and the second embodiment are still valid in this embodiment, and in order to reduce repetition, they are not repeated here. Accordingly, the relevant technical details mentioned in this embodiment can also be applied in the first embodiment and the second embodiment.

[0055] The fourth embodiment of the present invention relates to a display device 400. The fourth embodiment is substantially the same as the first embodiment, and the main difference is that: Figure 7 As shown, the display device 400 further includes a refraction unit 8, which is disposed on a side of the first light emitting unit 21 close to the shooting unit 1, and is located in the optical path 10; the refraction unit 8 is filled with a transparent liquid filler 80, and the transparent liquid filler 80 is used to increase the refractive index of the refraction unit 8. With this structural arrangement, more light can be incident on the shooting unit 1, thereby further improving the shooting performance of the shooting unit 1.

[0056] It should be noted that Figure 7 The display device 400 shown also includes a stacked cathode electrode 4001, an electron layer 4002, a hole layer 4003, an anode layer 4004 and a cover plate 4005, the liquid light-emitting layer 2 is arranged between the electron layer 4002 and the hole layer 4003, and the first light-emitting unit 21 and the refraction unit 8 are both arranged in the optical path 10.

[0057] It should also be noted that in this embodiment, a transparent liquid filler storage cavity can be provided so that the transparent liquid filler 80 in the refraction unit 8 can be transferred to the transparent liquid filler storage cavity, thereby adjusting the light transmittance of the display device 400 to meet different shooting requirements. In addition, the transparent liquid filler 80 is a transparent liquid that can increase the light refraction or reflection effect and meet the light transmittance requirement, such as water, etc. This embodiment does not specifically limit the material of the transparent liquid filler 80.

[0058] It is worth mentioning that in this embodiment, the refractive index of the refractive unit 8 is greater than the refractive index of the functional film layer located on the side of the refractive unit 8 away from the shooting unit 1. Since light is emitted from a denser medium (i.e., the refractive index of light in this medium is large) to an interface of a less dense medium (i.e., the refractive index of light in this medium is small), it will all be reflected back into the original medium. In order to avoid the occurrence of the above-mentioned total reflection phenomenon, the refractive index of the refractive unit 8 is set to be greater than the refractive index of the functional film layer, so that the light incident from the outside is emitted from the less dense medium (functional film layer) to the denser medium (refractive unit 8), so that the light incident on the shooting unit 1 will not be reflected back to the liquid luminescent layer 2, thereby increasing the light input efficiency.

[0059] See also Figure 8 The refraction unit 8 includes a first concave lens 81, a convex lens 82 and a second concave lens 83 which are stacked, and the first concave lens 81 is arranged adjacent to the shooting unit 1; the first concave lens 81, the convex lens 82 and the second concave lens 83 are all hollow lenses, and the first concave lens 81, the convex lens 82 and the second concave lens 83 are all filled with transparent liquid fillers. With this structural arrangement, more light can be incident on the shooting unit 1, thereby further improving the shooting performance of the shooting unit 1.

[0060] It is understandable that this embodiment does not specifically limit the type and number of lenses constituting the refractive unit 8. Figure 8 The structure shown is only an example of a feasible refraction unit 8 , and other structures of the refraction unit 8 that can change the angle of the light incident on the shooting unit 1 are within the protection scope of this embodiment.

[0061] See also Fig. 9The display device also includes a liquid material storage cavity 9, a first liquid material transmission pipeline 91, a second liquid material transmission pipeline 92 and a third liquid material transmission pipeline 93; the first concave lens 81 is connected to the liquid material storage cavity 9 via the first liquid material transmission pipeline 91, the convex lens 82 is connected to the liquid material storage cavity 9 via the second liquid material transmission pipeline 92, and the second concave lens 83 is connected to the liquid material storage cavity 9 via the third liquid material transmission pipeline 93; the display device also includes a control unit 2000, and the control unit 2000 is used to control the injection of the transparent liquid filler in the liquid material storage cavity 9 into the refractive unit 8, or to extract the transparent liquid filler 80 in the refractive unit 8 into the liquid material storage cavity 9.

[0062] Specifically, the dotted circle 3000 is the installation position of the shooting unit 1, the dotted box 2000 is the control unit, and the three cavities (the first concave lens 81, the convex lens 82 and the second concave lens 83) support the injection or extraction of liquid substances independently, which can be respectively Fig. 9 The three independent transmission pathways shown (a first liquid material transmission pipeline 91 , a second liquid material transmission pipeline 92 and a third liquid material transmission pipeline 93 ) perform the transmission operation process of the transparent liquid filling material 80 between the refraction unit 8 and the liquid material storage chamber 9 . Fig. 9 The convex lens 82 and the second concave lens 83 in the refractive unit 8 shown are injected with a transparent liquid filler 80. It can be seen that the light does not refract when passing through the first concave lens 81, but refracts when passing through the convex lens 82 and the second concave lens 83. In this way, the angle of the light incident on the top of the shooting unit 1 can be changed, so that more under-screen camera technology applications can be obtained, including but not limited to: improving the clarity of the long-range view, increasing the optical zoom capability, improving the macro shooting effect, and expanding the field of view angle. Furthermore, through the above method, the camera function of some high-end smart terminals can be realized without increasing the number and cost of the shooting unit 1.

[0063] It should be noted that, in addition to controlling the transmission operation of the transparent liquid filler 80 between the refractive unit 8 and the liquid material storage cavity 9, the control unit 2000 of this embodiment also controls the flow of the quantum dot particles 20 in the liquid luminescent layer 2: when the display device 400 is in the display state, the control unit 2000 transmits the quantum dot particles 20 in the quantum dot storage cavity 6 to the area where the first light-emitting unit 21 is located, and closes the transmission channel 61 to prevent the quantum dot particles 20 in the first light-emitting unit 21 from flowing back to the quantum dot storage cavity 6, thereby enabling full-screen display of the display device 400; when the display device 400 is in the shooting state, the control unit 2000 opens the transmission channel 61, and transmits all the quantum dot particles 20 in the first light-emitting unit 21 to the quantum dot storage cavity 6, and closes the transmission channel 61 again, so that the quantum dot particles 20 in the first light-emitting unit 21 will not block the light path 10, thereby improving the light transmittance, and then improving the shooting performance of the shooting unit 1.

[0064] It is not difficult to find that this embodiment can be implemented in conjunction with the first embodiment, the second embodiment, and the third embodiment. The relevant technical details mentioned in the first embodiment, the second embodiment, and the third embodiment are still valid in this embodiment, and are not repeated here to reduce repetition. Accordingly, the relevant technical details mentioned in this embodiment can also be applied in the first embodiment, the second embodiment, and the third embodiment.

[0065] Those skilled in the art will appreciate that the above embodiments are specific embodiments for implementing the present invention, and that in actual applications, various changes may be made in form and detail without departing from the spirit and scope of the present invention.

Claims

1. A display device, It is characterized in that include: A shooting unit and a liquid luminous layer; The photographing unit has an optical path for receiving ambient light outside the display device; The liquid light-emitting layer comprises a first light-emitting unit located in the direction of the light path and a second light-emitting unit located outside the direction of the light path; the first light-emitting unit and the second light-emitting unit each comprise flowable quantum dot particles; When the display device is in a display state, the quantum dot particles of the first light-emitting unit are located within the area of ​​the light path; when the display device is in a shooting state, all or part of the quantum dot particles in the first light-emitting unit move outside the area of ​​the light path.

2. The display device according to claim 1, It is characterized in that The quantum dot particles include at least a first quantum dot and a second quantum dot, and the first quantum dot and the second quantum dot are used to form a pixel unit; the display device also includes a first substrate, and the first substrate is arranged on a side of the liquid luminescent layer close to the shooting unit; A plurality of circuit base points distributed at intervals are provided on the first substrate. When the circuit base points are energized, the quantum dot particles are adsorbed to the area of ​​the liquid light-emitting layer facing the circuit base points, wherein each of the circuit base points adsorbs at least one of the first quantum dot and / or at least one of the second quantum dot.

3. The display device according to claim 2, It is characterized in that The first substrate includes a first area located within the area of ​​the optical path and a second area located outside the area of ​​the optical path; the display device also includes a control circuit, and the control circuit is electrically connected to the circuit base point; When the display device is in a display state, the control circuit controls the circuit base points of the first area and the second area to be energized; When the display device is in a shooting state, the control circuit controls the circuit base points in the first area to be powered off and the circuit base points in the second area to be powered on.

4. The display device according to claim 2, It is characterized in that The first substrate is at least partially located in the area of ​​the light path, the display device further comprises a second substrate and a control circuit, the second substrate is arranged on a side of the first substrate away from the liquid light-emitting layer, and the second substrate is located outside the area of ​​the light path; The second substrate is provided with a plurality of circuit base points distributed at intervals. When the display device is in a display state, the control circuit controls the circuit base points of the first substrate to be powered on and the circuit base points of the second substrate to be powered off; when the display device is in a shooting state, the control circuit controls the circuit base points of the first substrate to be powered off and the circuit base points of the second substrate to be powered on.

5. The display device according to claim 1, It is characterized in that The display device further includes a quantum dot storage cavity and a quantum dot transmission pipeline, wherein the quantum dot storage cavity is connected to the first light-emitting unit via the quantum dot transmission pipeline, and the quantum dot storage cavity is located outside the area of ​​the light path; The display device also includes a control unit. When the display device is in a display state, the control unit controls the quantum dot particles in the quantum dot storage cavity to flow to the area where the first light-emitting unit is located to form the first light-emitting unit; when the display device is in a shooting state, the control unit controls all or part of the quantum dot particles in the first light-emitting unit to flow to the quantum dot storage cavity.

6. The display device according to claim 5, It is characterized in that The display device further includes a blocking layer, which is disposed between the first light-emitting unit and the second light-emitting unit and is used to block the mutual flow of quantum dot particles in the first light-emitting unit and the second light-emitting unit.

7. The display device according to claim 1, It is characterized in that The first light-emitting unit includes a first storage cavity and quantum dot particles that can flow into and out of the first storage cavity, and the second light-emitting unit includes a second storage cavity and quantum dot particles that can flow into and out of the second storage cavity; The display device further includes a control unit. When the display device is in a shooting state, the control unit controls the quantum dot particles in the first storage cavity to flow to the second storage cavity.

8. The display device according to any one of claims 1 to 7, It is characterized in that The display device also includes a refraction unit, which is arranged on a side of the first light-emitting unit close to the shooting unit and is located in the area of ​​the light path; the refraction unit is filled with a transparent liquid filler, and the transparent liquid filler is used to increase the refractive index of the refraction unit.

9. The display device according to claim 8, It is characterized in that The refraction unit includes a first concave lens, a convex lens and a second concave lens which are stacked, and the first concave lens is arranged adjacent to the shooting unit; The first concave lens, the convex lens and the second concave lens are all hollow lenses, and the first concave lens, the convex lens and the second concave lens are all filled with the transparent liquid filler; The display device further includes a liquid material storage cavity, a first liquid material transmission pipeline, a second liquid material transmission pipeline and a third liquid material transmission pipeline; The first concave lens is connected to the liquid material storage cavity via the first liquid material transmission pipeline, the convex lens is connected to the liquid material storage cavity via the second liquid material transmission pipeline, and the second concave lens is connected to the liquid material storage cavity via the third liquid material transmission pipeline; The display device further includes a control unit, which is used to control the transparent liquid filling in the liquid substance storage cavity to be injected into the refraction unit, or to extract the transparent liquid filling in the refraction unit into the liquid substance storage cavity.

10. The display device according to claim 1, It is characterized in that When the display device is in a shooting state, the density of quantum dot particles in the first light-emitting unit is less than the density of quantum dot particles in the second light-emitting unit.

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