Display device and display apparatus

Abstract

Embodiments of the present application provide a display device and a display apparatus. The display device comprises: a first substrate; a second substrate forming a containing space, comprising a display area and a camera area; a black matrix layer, the black matrix layer having a plurality of first openings; a first surface electrode layer; a slope structure; a second surface electrode layer, covering at least one side of the slope structure close to the first substrate; a liquid dielectric layer comprising a plurality of light-shielding ions; and an imaging element. Embodiments of the present application effectively simplify the volume and complexity of the display device by integrating the camera area and the display area on the display device. The small aperture imaging method is adopted to reduce the camera spacing and the shooting angle interval. A plurality of first openings correspond to one imaging element, and the first openings are selectively opened by time sharing or on demand to reduce the production cost of the device. The slope structure forms a light waveguide light path design, so that the camera area and the display area are integrated, and the light and thin requirements of the display device are met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular, the present application relates to a display device and display device. BACKGROUND

[0002] 3D display technology can provide stereoscopic display picture for human eyes, so that people have a sense of being in the scene, with the release of Avatar, the technology has been widely used in cinemas. 3D display technology can be divided into naked eye type and glasses type, at present, single naked eye 3D stereoscopic display technology has been deeply researched and widely applied. 3D display technology is matched with real-time stereoscopic image acquisition technology, which is expected to realize real-time stereoscopic video communication. How to integrate the signal acquisition system into the display screen to realize thin and light has become a problem to be solved in hardware. Moreover, in addition to the large volume, the existing imaging system is also very expensive, how to reduce the cost of device and expand the product market is also a problem to be solved. SUMMARY

[0003] The present application aims at the shortcomings of the prior art, and proposes a display device and display device.

[0004] In a first aspect, the embodiments of the present application provide a display device, comprising:

[0005] a first substrate;

[0006] a second substrate, disposed opposite to the first substrate, forming an accommodation space, the accommodation space comprising a display area and a camera area;

[0007] a black matrix layer, located on the side of the first substrate close to the second substrate, and located in the camera area, the black matrix layer having a plurality of first openings;

[0008] a first electrode layer, located on the side of the black matrix layer close to the second substrate, and located in the camera area;

[0009] a slope structure, located on the side of the second substrate close to the first substrate, and located in the camera area;

[0010] a second electrode layer, covering at least the side of the slope structure close to the first substrate, and located in the camera area;

[0011] a liquid dielectric layer, located between the first electrode layer and the second electrode layer, the liquid dielectric layer comprising a plurality of light shielding ions;

[0012] an imaging element, located on the side of the second substrate away from the first substrate, and located in the camera area.

[0013] In some embodiments of the present application, the camera region comprises a plurality of imaging units, each imaging unit comprising one imaging element and a plurality of first openings, the number of first openings between any two adjacent imaging elements is equal.

[0014] In some embodiments of the present application, the slope structure corresponds to the first opening one by one, the orthographic projection of each slope structure on the second substrate covers the orthographic projection of one first opening on the second substrate, and the orthographic projection of each imaging element on the second substrate covers the orthographic projection of one first opening on the second substrate.

[0015] In some embodiments of the present application, the second electrode layer comprises a reflective electrode and a light-transmitting electrode.

[0016] The orthographic projection of the reflective electrode on the second substrate at least partially overlaps the orthographic projection of the imaging element on the second substrate, and the orthographic projection of the light-transmitting electrode on the second substrate is spaced apart from the orthographic projection of the imaging element on the second substrate.

[0017] In some embodiments of the present application, the liquid dielectric layer comprises electronic ink, and the light-blocking ion comprises a positively charged light-blocking dye.

[0018] In some embodiments of the present application, when the display device is in a camera-off state, the driving voltage of the first electrode is less than the driving voltage of the second electrode, and the light-blocking ion covers all the first openings.

[0019] When the display device is in a camera-on state, the driving voltage of the second electrode in the second region is less than the driving voltage of the first electrode, which is less than the voltage of the second electrode in the first region, and the light-blocking ion covers the first openings in the first region and exposes the first openings in the second region.

[0020] In some embodiments of the present application, the refractive index of the electronic ink is greater than the refractive index of the first substrate and the second substrate, and the included angle between the inclined surface of the slope structure and the second substrate is not less than 40 degrees.

[0021] In some embodiments of the present application, the display device further comprises a first reflective layer and a second reflective layer.

[0022] The first reflective layer is located between the black matrix layer and the first electrode layer, and has a plurality of second openings, and the orthographic projection of the first opening on the first substrate coincides with the orthographic projection of the second opening on the first substrate.

[0023] The second reflective layer is located between the slope structure and the second substrate, and has a plurality of third openings, and the orthographic projection of the third opening on the second substrate coincides with the orthographic projection of the imaging element on the second substrate.

[0024] In some embodiments of the present application, the projection of the ramp structure on the second substrate and the projection of the imaging element on the second substrate are spaced apart from each other.

[0025] In some embodiments of the present application, the liquid dielectric layer comprises electronic ink, the refractive index of the electronic ink is equal to the refractive index of the first substrate and the second substrate, and the included angle between the inclined surface of the ramp structure and the second substrate is not greater than 35 degrees.

[0026] In some embodiments of the present application, the display device further comprises a lens structure, and the projection of the lens structure on the first substrate at least partially overlaps the projection of the first opening on the first substrate.

[0027] In some embodiments of the present application, the liquid dielectric layer comprises electrophoretic liquid, and the light-shielding ions comprise positively charged metal ion colloids.

[0028] In some embodiments of the present application, when the display device is in a camera-off state, the driving voltage of the first surface electrode is less than the driving voltage of the second surface electrode, and the light-shielding ions completely cover the first opening;

[0029] When the display device is in a camera-on state, the driving voltage of the second surface electrode in the second region is less than the driving voltage of the first surface electrode, the driving voltage of the first surface electrode is less than the voltage of the second surface electrode in the first region, and the light-shielding ions cover the first opening in the first region and form a reflection layer on the ramp structure in the second region.

[0030] In a second aspect, the embodiments of the present application provide a display device, comprising the display device according to any one of the embodiments of the first aspect.

[0031] The technical scheme provided by the embodiments of the present application has the beneficial technical effects including: the embodiments of the present application divide the display device into a display area and a camera area, and the camera area and the display area are integrated on the display device, which effectively simplifies the volume and complexity of the display device. The incident light is incident through the first opening of the black matrix layer, reflected by the ramp structure into a series of imaging units in the camera area, adopts a pinhole imaging mode, reduces the camera spacing, and reduces the shooting angle interval; a plurality of first openings correspond to one imaging element, and the first openings are selectively opened by using a time-sharing or on-demand method, thereby reducing the production cost of the device; the ramp structure forms a light waveguide light path design, so that the camera area and the display area are integrated, and the light and thin requirements of the display device are met.

[0032] Additional aspects and advantages of the present application will be made apparent from the following description, which will be given in the context of particular embodiments, with reference to the attached drawings. BRIEF DESCRIPTION OF DRAWINGS

[0033] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of embodiments, taken in conjunction with the accompanying drawings, in which:

[0034] Figure 1 A schematic diagram of a structure of a display device in one embodiment of the present application;

[0035] Figure 2A A schematic diagram of a structure of a display device in a camera-off state in one embodiment of the present application;

[0036] Figure 2B A schematic diagram of a structure of a display device in a camera-on state in one embodiment of the present application;

[0037] Figure 3A A schematic diagram of an optical path of a display device in one embodiment of the present application;

[0038] Figure 3B A schematic diagram of an optical simulation of a display device in one embodiment of the present application;

[0039] Figure 4 A schematic diagram of a camera region of a display device in one embodiment of the present application;

[0040] Figure 5A A schematic diagram of a structure of a display device in a camera-off state in another embodiment of the present application;

[0041] Figure 5B A schematic diagram of a structure of a display device in a camera-on state in another embodiment of the present application;

[0042] Figure 6A A schematic diagram of an optical path of a display device in another embodiment of the present application;

[0043] Figure 6B A schematic diagram of an optical simulation of a display device in another embodiment of the present application;

[0044] Figure 7 A schematic diagram of a camera region of a display device in yet another embodiment of the present application;

[0045] Figure 8 A schematic diagram of an optical path of a display device in yet another embodiment of the present application;

[0046] Figure 9A A schematic diagram of a structure of a display device in a camera-off state in still another embodiment of the present application,

[0047] Figure 9B A schematic diagram of a structure of a display device in a camera-on state in still another embodiment of the present application. DETAILED DESCRIPTION

[0048] The present application is described in detail below, examples of embodiments of the present application are shown in the accompanying drawings, wherein the same or like reference numerals throughout the drawings denote the same or like components or components having the same or similar functions. Also, if a detailed description of known technology is deemed unnecessary for the features of the present application shown, it is omitted. The embodiments described below by reference to the drawings are exemplary and are for the purpose of explanation only, and cannot be interpreted as a limitation on the present application.

[0049] Those skilled in the art can understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as commonly understood by those skilled in the art to which the present application belongs. It should also be understood that terms such as those defined in a general dictionary should be understood to have meanings consistent with meanings in the context of the relevant art and should not be interpreted ideally or overly formally unless specifically defined as such herein.

[0050] Those skilled in the art can understand that, unless otherwise stated, the singular forms "a", "an" and "the" used herein also include the plural forms. It should be further understood that the phrase "comprising" used in the specification of the present application means that the features, integers, steps, operations, elements and / or components exist, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof. It should be understood that when we say an element is "connected" or "coupled" to another element, it can be directly connected or coupled to the other element, or there can be intermediate elements. In addition, "connected" or "coupled" used herein can include wireless connection or wireless coupling. The phrase "and / or" used herein includes all or any single unit and all combinations of the associated listed items.

[0051] It is found that in the existing real-time stereoscopic communication system, the light field camera array used is bulky and expensive, which is not conducive to the large-scale application of the product. How to integrate the light field camera imaging system into the screen becomes a technical difficulty that restricts the large-scale use of the product. Moreover, the bulky camera volume leads to an increase in the spacing between the cameras and the view angle of the captured image, and the stereoscopic image is not continuous enough.

[0052] In related technologies, display devices can be divided into two parts: a display area and a camera area. The display area mainly includes the display device and an eye-tracking camera integrated within it. The display device employs mature naked-eye 3D stereoscopic display technology. Within the visible space, utilizing binocular parallax, the human eye can see stereoscopic images. The eye-tracking camera is used to determine the position of the human eye, adjust the displayed stereoscopic view information according to different eye positions, and update the display information in real time as the eye position moves. The camera area includes light field cameras arranged in a row, used to capture the scene in front of the cameras. For any object in the space in front of the cameras, the angle between the light field cameras at different positions and the object is different, resulting in different image information. This means the light field cameras can obtain different view information required for 3D display and can serve as an information source for naked-eye 3D stereoscopic display. Two people, A and B, located in different places, can use this device. A's light field camera captures an image of A, which is then transmitted to B's display screen, allowing B to see A's stereoscopic image. Similarly, A can see B's stereoscopic image on A's display screen, thus achieving real-time stereoscopic communication.

[0053] The related technical solutions use large-sized cameras in terms of hardware, resulting in a minimum camera spacing of 3-4cm. A row of light field cameras contains 24 independent camera units with a total length between 72-96cm. This camera group can only be installed above TV products, which limits the application scenarios of this technology. Furthermore, the large camera spacing results in a 3D view angle interval of about 0.6°, poor image continuity, and a sense of jump in the displayed information.

[0054] This application provides a display device and display apparatus, aiming to solve the above-mentioned technical problems in related technologies. The technical solution of this application and how it solves the aforementioned technical problems are described in detail below with specific embodiments.

[0055] Firstly, embodiments of this application provide a display device. For example... Figure 1 and Figure 2A As shown, Figure 1 This is a schematic diagram of the structure of a display device in one embodiment of this application. Figure 2A This is a schematic diagram of the structure of a display device in a camera-off state according to one embodiment of this application. The display device includes:

[0056] First substrate 1;

[0057] The second substrate 2 is disposed opposite to the first substrate 1 to form an accommodating space;

[0058] The sealing adhesive 31 connects the first substrate 1 and the second substrate 2, and divides the accommodating space into at least a display area and a camera area;

[0059] The black matrix layer 11 is located on the side of the first substrate 1 close to the second substrate 2 and in the camera area, and has a plurality of first openings 11a;

[0060] The first surface electrode layer 12 is located on the side of the black matrix layer 11 close to the second substrate 2 and in the camera area.

[0061] The slope structure 21 is located on the side of the second substrate 2 close to the first substrate 1 and in the camera area.

[0062] The second surface electrode layer 22 covers at least the side of the slope structure 21 close to the first substrate 1 and is located in the camera area.

[0063] The liquid dielectric layer 4 is located between the first surface electrode layer 12 and the second surface electrode layer 22, and includes a plurality of light-shielding ions 41.

[0064] The imaging element 23 is located on the side of the second substrate 2 away from the first substrate 1 and in the camera area.

[0065] In this embodiment, the containing space between the first substrate 1 and the second substrate 2 is divided into a display area and a camera area by the frame sealant 31, that is, the camera area and the display area are integrated on the same display device. Compared with the related art of externally connecting a row of light field cameras to a display device, the volume and complexity of the display device are effectively simplified.

[0066] The display area of the display device forms a sandwich structure, including the first substrate 1, the liquid crystal 32 layer, and the second substrate 2 stacked in turn from top to bottom, and the periphery is fixed and isolated by the frame sealant 31. The camera area of the display device is filled with the liquid dielectric layer 4 between the first substrate 1 and the second substrate 2, and the thickness of the liquid dielectric layer 4 in the direction perpendicular to the first substrate 1 is equal to the thickness of the liquid crystal 32 layer.

[0067] The containing space is provided with the first surface electrode layer 12 on the side close to the first substrate 1 and the second surface electrode layer 22 on the side away from the first substrate 1, and the second surface electrode layer 22 has a plurality of sub-electrodes, each sub-electrode covering an inclined surface of a slope structure 21 and extending to cover the exposed surface of the second substrate 2.

[0068] The incident light is incident through the first openings 11a of the black matrix layer 11, reflected one or more times by the first surface electrode layer 12 and the second surface electrode layer 22, and exits to the imaging element 23. The light waveguide path design formed by the slope structure 21 integrates the camera area and the display area, meeting the light and thin requirements of the display device. This imaging process uses a pinhole imaging method to reduce the camera spacing and the shooting angle interval.

[0069] In some embodiments of the present application, the camera region comprises a plurality of imaging units, each imaging unit comprises one imaging element 23 and a plurality of first openings 11a, and the number of first openings 11a spaced between any two adjacent imaging elements 23 is equal.

[0070] In the present embodiment, each imaging element 23 defines an imaging unit, and one imaging element 23 corresponds to a plurality of first openings 11a. As shown in the embodiment of Figure 2A In the embodiment of the present application, one imaging element 23 corresponds to four first openings 11a. That is, one imaging unit comprises one imaging element 23 and four first openings 11a. Three first openings 11a are spaced between any two adjacent imaging elements 23.

[0071] The plurality of first openings 11a correspond to one imaging element 23 collectively, and an electric field is formed between the first electrode layer 12 and the second electrode layer 22 by applying a voltage to the first electrode layer 12 and the second electrode layer 22. The light-shielding ions 41 carrying positive or negative charges will be subjected to the force of the electric field. At least part of the light-shielding ions 41 will move in the liquid dielectric layer 4 due to the force of the electric field. Thus, the switching between the covered state and the open state of the first opening 11a is completed. The first opening 11a is selectively opened by using the time-sharing or on-demand method, thereby reducing the production cost of the device. At the same time, at most only one first opening 11a in one imaging unit is open, and the other first openings 11a are closed. There is no restriction between different imaging units, and in general, at any time, only one first opening 11a in each imaging unit is open.

[0072] In some embodiments of the present application, the slope structure 21 corresponds to the first opening 11a one by one, and the orthographic projection of each slope structure 21 on the second substrate 2 covers the orthographic projection of one first opening 11a on the second substrate 2, and the orthographic projection of each imaging element 23 on the second substrate 2 covers the orthographic projection of one first opening 11a on the second substrate 2.

[0073] In the present embodiment, the number of slope structures 21 is equal to the number of first openings 11a, and the positions of the slope structures 21 correspond to the positions of the first openings 11a one by one. The orthographic projection of each slope structure 21 covers the orthographic projection of one first opening 11a, and vice versa. The orthographic projection of each imaging element 23 covers the orthographic projection of one first opening 11a on the second substrate 2, but vice versa is not necessarily true. The orthographic projection of part of the first openings 11a on the second substrate 2 is covered by the orthographic projection of one imaging element 23 on the second substrate 2. As shown in the embodiment of Figure 2A In the embodiment of the present application, only one quarter of the orthographic projections of the first openings 11a are covered by the orthographic projection of the imaging element 23.

[0074] In some embodiments of the present application, the second surface electrode layer 22 includes reflective electrodes 22a and light-transmissive electrodes 22b.

[0075] The orthogonal projection of the reflective electrodes 22a on the second substrate 2 at least partially overlaps the orthogonal projection of the imaging elements 23 on the second substrate 2, and the orthogonal projection of the light-transmissive electrodes 22b on the second substrate 2 is spaced apart from the orthogonal projection of the imaging elements 23 on the second substrate 2.

[0076] In the present embodiment, some of the sub-electrodes in the second surface electrode layer 22 correspond to the imaging elements 23, the orthogonal projection of the some sub-electrodes at least partially overlaps the orthogonal projection of the imaging elements 23, and the orthogonal projection of the other sub-electrodes is spaced apart from and does not overlap the orthogonal projection of the imaging elements 23. As shown in FIG. 2, the orthogonal projection of the reflective electrodes 22a on the second substrate 2 at least partially overlaps the orthogonal projection of the imaging elements 23 on the second substrate 2, and the orthogonal projection of the light-transmissive electrodes 22b on the second substrate 2 is spaced apart from the orthogonal projection of the imaging elements 23 on the second substrate 2. Figure 2A In the embodiment shown in FIG. 2, the orthogonal projection of only a quarter of the sub-electrodes at least partially overlaps the orthogonal projection of the imaging elements 23, and the orthogonal projection of three quarters of the sub-electrodes is spaced apart from the orthogonal projection of the imaging elements 23.

[0077] Optionally, the above-mentioned some sub-electrodes are reflective electrodes 22a, and a metal material with high reflectivity is used, such as at least one of gold, silver, copper, and aluminum.

[0078] Optionally, the above-mentioned other sub-electrodes are light-transmissive electrodes 22b, and a material with high transmittance is used, such as indium tin oxide.

[0079] In some embodiments of the present application, the liquid dielectric layer 4 includes electronic ink, and the light-blocking ions 41 include positively charged light-blocking dyes.

[0080] In the present embodiment, the light-blocking dyes carry positive charges on only one side, and a dark pattern is coated on the side carrying the positive charges. The dark pattern has high light absorption. When the light-blocking dyes gather at the first substrate 1, and the dark pattern faces the black matrix layer 11, the first openings 11a of the black matrix layer 11 are shielded, external light is absorbed by the light-blocking dyes, and cannot enter or only a small amount of light enters the imaging elements 23.

[0081] As shown in FIG. 3, the light-blocking dyes carry positive charges on only one side, and a dark pattern is coated on the side carrying the positive charges. Figure 2B FIG. 4 is a structural schematic diagram of the display device in a camera-open state according to an embodiment of the present application. Figure 2B

[0082] In another embodiment, a light pattern is coated on the side of the light-blocking dyes away from the positive charges, and the light pattern has high reflectivity. When the light-blocking dyes gather at the slope structure 21, and the light pattern is located on the side of the slope structure 21 close to the first substrate 1, external incident light is reflected by the light pattern of the light-blocking dyes and transmitted along the waveguide light path to the imaging elements 23.

[0083] ​In some embodiments of the present application, when the display device is in the camera-off state, the driving voltage V1 of the first electrode is less than the driving voltage V2 of the second electrode, and the light-blocking ions 41 completely cover the first opening 11a;

[0084] When the display device is in the camera-on state, the driving voltage V3 of the second electrode in the second region is less than the driving voltage V1 of the first electrode, the driving voltage V1 of the first electrode is less than the voltage V2 of the second electrode in the first region, and the light-blocking ions 41 cover the first opening 11a in the first region and expose the first opening 11a in the second region.

[0085] On the basis of the above-mentioned embodiments, when the display device is in the camera-off state, V1 < V2, an electric field is formed between the first electrode and the second electrode, and the electric field force causes the light-blocking ions 41 to move towards the first substrate 1, so that the light-blocking ions 41 block the first opening 11a of the black matrix layer 11, and external light cannot enter or only a small amount of light enters the imaging element 23, and the camera area does not work. As shown in Figure 2A .

[0086] When the display device is in the camera-on state, V3 < V1 < V2. The electric field direction in the first region is similar to that in the camera-off state in this region, an electric field is formed between the first electrode and the second electrode in the first region, and the electric field force causes the light-blocking ions in the first region to move towards the first substrate 1; the electric field direction in the second region is opposite to that in the camera-off state in this region, an electric field is formed between the first electrode and the second electrode in the second region, and the electric field force causes the light-blocking ions in the second region to move towards the slope structure 21, the first opening 11a of the black matrix layer 11 in the second region is opened, and external light is incident. As shown in Figure 2B .

[0087] In some embodiments of the present application, the refractive index of the electronic ink is greater than the refractive index of the first substrate 1 and the second substrate 2, and the included angle between the inclined surface of the slope structure 21 and the second substrate 2 is not less than 40 degrees.

[0088] In the present embodiment, the refractive index of the first substrate 1 is equal to the refractive index of the second substrate 2, and the refractive index of the electronic ink is greater than the refractive index of the first substrate 1. The incident light is refracted at the critical surface between the first substrate 1 and the electronic ink, so that more angles of incident light can enter the camera area.

[0089] As shown in Figure 3A and Figure 3B , Figure 3A is a schematic diagram of the optical path of the display device in an embodiment of the present application, Figure 3B is a schematic diagram of the optical simulation of the display device in an embodiment of the present application.

[0090] Optionally, the first substrate 1 and the second substrate 2 have a refractive index of 1.5, the electronic ink has a refractive index of no less than 1.8, and the included angle between the inclined surface of the slope structure 21 and the second substrate 2 is 45 degrees. After the incident light is reflected for the first time at one of the reflective electrodes 22a, the incident light is directly reflected to the imaging element 23 at the other reflective electrode 22a; or, after the incident light is reflected for the first time at one of the reflective electrodes 22a, the incident light is reflected for multiple times at the first surface electrode and the second surface electrode to the other reflective electrode 22a, and then reflected to the imaging element 23.

[0091] In one specific embodiment of the present application, the imaging element 23 includes a Charge Coupled Device Camera (CCD), and the image of the photographed object can be reproduced through an algorithm, and the image photographed at the angle can be obtained at another location through signal transmission.

[0092] Charge Coupled Device Camera, CCD), and the image of the photographed object can be reproduced through an algorithm, and the image photographed at the angle can be obtained at another location through signal transmission.

[0093] As shown in FIG. 1, the display device includes a first substrate 1, a second substrate 2, a black matrix layer 11, a first surface electrode 12, a second surface electrode 13, a slope structure 21, a reflective electrode 22a and a reflective electrode 22b, and an imaging element 23. Figure 4 As shown in FIG. 1, the display device includes a first substrate 1, a second substrate 2, a black matrix layer 11, a first surface electrode 12, a second surface electrode 13, a slope structure 21, a reflective electrode 22a and a reflective electrode 22b, and an imaging element 23. Figure 4 As shown in FIG. 1, the display device includes a first substrate 1, a second substrate 2, a black matrix layer 11, a first surface electrode 12, a second surface electrode 13, a slope structure 21, a reflective electrode 22a and a reflective electrode 22b, and an imaging element 23.

[0094] In the embodiment, the distance between the adjacent two first openings 11a of the black matrix layer 11 is no less than 4 mm and no more than 6 mm, the distance between the adjacent two imaging elements 23 is no less than 2 cm and no more than 3 cm, and each imaging element 23 corresponds to about four first openings 11a of the black matrix layer 11. In order to realize the photographing angle range of ±20°, the size of the imaging element 23 needs to be 1 cm*1 cm, and in order to realize better pinhole imaging effect, the size of the first opening 11a is a square hole structure of no more than 100 um*100 um.

[0095] As shown in FIG. 1, the display device includes a first substrate 1, a second substrate 2, a black matrix layer 11, a first surface electrode 12, a second surface electrode 13, a slope structure 21, a reflective electrode 22a and a reflective electrode 22b, and an imaging element 23. Figure 4 Based on the requirement of the photographing angle, the light is expanded in the XY plane, so the imaging element 23 needs to be arranged in a square shape in the XY plane, and the width needs to be greater than the width of the first opening 11a. The width of the imaging element 23 is positively correlated with the distance between the adjacent two imaging elements 23, that is, the greater the distance, the greater the width of the imaging element 23.

[0096] In some embodiments of the present application, the display device further includes a first surface reflection layer 13 and a second surface reflection layer 25.

[0097] The first reflective layer 13 is located between the black matrix layer 11 and the first electrode layer 12, and has a plurality of second openings. The orthographic projection of the first opening 11a on the first substrate 1 coincides with the orthographic projection of the second opening on the first substrate 1.

[0098] The second reflective layer 25 is located between the ramp structure 21 and the second substrate 2, and has a plurality of third openings. The orthographic projection of the third openings on the second substrate 2 coincides with the orthographic projection of the imaging element 23 on the second substrate 2.

[0099] Although light does not suffer loss after reflection under ideal conditions, in actual operation, the reflecting surface through which light passes is not perfectly smooth. A small portion of the light does not travel along the waveguide optical path after being reflected by the reflecting surface, and may not be able to be output to the imaging element 23, resulting in light loss.

[0100] In the above embodiment, after the incident light enters the display area, it passes through the reflection electrode 22a at least twice before being output to the imaging element 23. In this embodiment, reducing one reflection can increase the light flux received by the imaging element 23.

[0101] like Figure 5A and Figure 5B As shown, Figure 5A This is a schematic diagram of the display device in the camera-off state according to another embodiment of this application. Figure 5B This is a schematic diagram of the structure of the camera-open state display device in another embodiment of this application.

[0102] A first reflective layer 13 and a second reflective layer 25 are respectively fabricated on the first substrate 1 and the second substrate 2 to achieve the same light transmission function as a waveguide.

[0103] The first reflective layer 13, which is close to the first substrate 1, has an opening at the first opening 11a of the black matrix layer 11, which meets the requirements for pinhole imaging. The second opening of the first reflective layer 13 corresponds one-to-one with the first opening 11a of the black matrix.

[0104] The second reflective layer 25 is broken in the region above the imaging element 23 to form a third opening, so that light can shine onto the imaging element 23; the third opening of the second reflective layer 25 corresponds one-to-one with the imaging element 23.

[0105] The incident light passes through the first opening 11a and the second opening into the camera area. After being reflected at a reflective electrode 22a, it undergoes one or more reflections between the first reflective layer 13 and the second reflective layer 25 before passing through the third opening and being output to the imaging element 23.

[0106] Optionally, the display device further includes an insulating layer 24 located between the second reflective layer 25 and the second electrode layer 22.

[0107] Further considering the electrical influence caused by the first surface reflection layer 13 and the second surface reflection layer 25, an insulating layer 24 is added between the second surface reflection layer 25 and the second surface electrode, and the first substrate 1 is electrically consistent, so that the first surface reflection layer 13 can be directly in contact with the first surface electrode layer 12. The driving scheme of the electronic ink is the same as that of the above-mentioned embodiment.

[0108] In some embodiments of the present application, the orthographic projection of the slope structure 21 on the second substrate 2 is spaced apart from the orthographic projection of the imaging element 23 on the second substrate 2.

[0109] Compared with the above-mentioned other embodiments, in the present embodiment, the number of slope structures 21 is less than the number of first openings 11a, and the slope structures 21 do not one-to-one correspond to the first openings 11a. Specifically, the orthographic projection of the slope structure 21 is spaced apart from and does not overlap with the orthographic projection of the imaging element 23. That is, no slope structure 21 is arranged above the imaging element 23. This makes the light experience less reflection, thereby improving the light flux received by the imaging element 23.

[0110] In some embodiments of the present application, the liquid dielectric layer 4 includes electronic ink, the refractive index of the electronic ink is equal to the refractive index of the first substrate 1 and the second substrate 2, and the included angle between the inclined surface of the slope structure 21 and the second substrate 2 is not greater than 35 degrees.

[0111] In the present embodiment, the refractive index of the electronic ink, the refractive index of the first substrate 1, and the refractive index of the second substrate 2 are all equal. The incident light does not refract at the critical surfaces of the first substrate 1 and the electronic ink and the electronic ink and the second substrate 2, so that more emergent light can be emitted from the second substrate 2.

[0112] As shown in Figure 6A and Figure 6B , Fig. 1 is a schematic diagram of the optical path of a display device in another embodiment of the present application, Figure 6A Fig. 2 is a schematic diagram of the optical simulation of a display device in another embodiment of the present application. Figure 6B

[0113] Optionally, the refractive index of the first substrate 1 and the second substrate 2 is 1.5, the refractive index of the electronic ink is also 1.5, and the included angle between the inclined surface of the slope structure 21 and the second substrate 2 is 30 degrees.

[0114] After the incident light is reflected for the first time at one reflection electrode 22a, it does not pass through another reflection electrode 22a, but only passes through one or more times between the first surface reflection electrode 22a and the second surface reflection electrode 22a, and then can be irradiated on the imaging element 23.

[0115] The optical path of the device structure is as shown in Figure 6B ​As shown, the light rays pass through the pinhole to reflect on the deposited electronic ink on the slope, and are reflected multiple times in the device by the first reflecting layer 13 and the second reflecting layer 25, exit the opening area above the imaging element 23 and irradiate on the imaging element 23, and the image taken can be restored through image algorithm.

[0116] In some embodiments of the present application, the display device further comprises a lens structure 14, and a normal projection of the lens structure 14 on the first substrate 1 at least partially overlaps with a normal projection of the first opening 11a on the first substrate 1.

[0117] In the present embodiment, in order to improve the imaging quality, a small-size lens structure 14 can be used instead of the pinhole imaging mode, and other structures and device principles remain unchanged: the imaging element 23 in one imaging unit corresponds to multiple imaging lenses, and only one imaging lens in one imaging unit works at any moment, and the electronic ink is used to control which lens below the light rays can pass through, thereby controlling whether the imaging lens works or not.

[0118] As shown in Figure 7 and Figure 8 , the camera region of the display device in another embodiment of the present application is shown in Figure 7 , and the optical path of the display device in another embodiment of the present application is shown in Figure 8 .

[0119] The imaging optical path diagram is shown in Figure 8 , the focal length of the lens at different positions in the same imaging unit is different, and the focal length of the lens at the same position between different imaging units is the same, so that the control lens can form a clear image on the imaging element 23. Here, the two reflecting slopes and the waveguide structure in the middle only play a role in deflecting the optical path, and can be equivalent to the lens directly imaging the optical path, as shown in Figure 8 , the right diagram.

[0120] In some embodiments of the present application, the liquid dielectric layer 4 comprises electrophoretic liquid, and the light-blocking ions 41 comprise positively charged metal ion colloids.

[0121] As shown in Figure 9A and 9B , the structure of the display device in the camera-off state in another embodiment of the present application is shown in Figure 9A , and the structure of the display device in the camera-on state in another embodiment of the present application is shown in Figure 9B .

[0122] The electronic ink used in the above embodiments is replaced by electrophoretic liquid with similar properties in the present embodiment, and the electrophoretic liquid contains metal ion colloids with positive charges, which will be adsorbed on the negative electrode under the action of the electric field to form a reflecting surface. At this time, the device structure is shown in Figure 9A .

[0123] In some embodiments of the present application, when the display device is in the camera-off state, the driving voltage V1 of the first electrode is less than the driving voltage V2 of the second electrode, and the light-blocking ions 41 completely cover the first opening 11a;

[0124] When the display device is in the camera-on state, the driving voltage V3 of the second electrode in the second region is less than the driving voltage V1 of the first electrode, the driving voltage V1 of the first electrode is less than the voltage V2 of the second electrode in the first region, the light-blocking ions 41 cover the first opening 11a in the first region and form a reflective layer on the slope structure 21 in the second region.

[0125] In the case where the camera region is not working, the first electrode is loaded with the driving voltage V1 and the second electrode is loaded with the driving voltage V2, and V1 < V2 is required, so that the positively charged metal ions are attached to the first electrode at the first substrate 1 to form a reflective layer to block the first opening 11a of the black matrix and prevent light from being incident. As shown in Figure 9A .

[0126] When a certain first opening 11a needs to work, the first electrode is loaded with the driving voltage V1, the second electrode in the first region is loaded with the driving voltage V2 corresponding to the first opening 11a which remains closed, and the second electrode in the second region is loaded with the driving voltage V3 corresponding to the first opening 11a which needs to be opened, and V3 < V1 < V2 is required, so that the metal ions in the second region are adsorbed at the slope structure 21 to form a reflective layer.

[0127] The electrophoretic fluid is different from the electronic ink in characteristics. The electronic ink can remain in the present state without electricity, while the electrophoretic fluid will spread out, so that the voltage signal needs to be maintained in the camera-off state. When the electrophoretic fluid covers the first opening 11a, it will reflect the light entering the first opening 11a to form a reflective bright spot. When used in a television product, the size of the first opening 11a is smaller than the resolution limit of the human eye, so the human eye cannot identify the reflective bright spot.

[0128] Based on the same inventive concept, in a second aspect, the embodiments of the present application provide a display device comprising the display device according to any one of the embodiments of the first aspect.

[0129] The application can at least achieve the following beneficial effects: the display device is divided into a display area and a camera area according to the embodiments of the application, and the camera area and the display area are integrated on the display device, thereby effectively simplifying the volume and complexity of the display device. The incident light is incident through the first opening 11a of the black matrix layer 11, is reflected by the slope structure 21 into a series of imaging units in the transverse direction of the camera area, and is imaged in a pinhole imaging manner, thereby reducing the camera spacing and the shooting angle interval; a plurality of first openings 11a correspond to one imaging element 23, the first openings 11a are selectively opened by using a time-sharing or on-demand method, thereby reducing the production cost of the device; the light waveguide light path design formed by the slope structure 21 integrates the camera area and the display area, thereby meeting the light and thin requirements of the display device.

[0130] Those skilled in the art can understand that the steps, measures and schemes in the various operations, methods and processes discussed in the present application can be alternated, changed, combined or deleted. Further, other steps, measures and schemes in the various operations, methods and processes discussed in the present application can also be alternated, changed, rearranged, decomposed, combined or deleted. Further, the steps, measures and schemes in the various operations, methods and processes in the related art can also be alternated, changed, rearranged, decomposed, combined or deleted.

[0131] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0132] The terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0133] In the description of the present application, it should be noted that unless otherwise specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between the two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0134] In the description of the specification, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0135] It should be understood that, although each step in the flowchart of the accompanying drawings is shown in sequence according to the indication of the arrow, these steps are not necessarily executed in sequence according to the indication of the arrow. Unless explicitly stated herein, the execution of these steps is not strictly limited in sequence, and they can be executed in other sequences. Moreover, at least part of the steps in the flowchart of the accompanying drawings can include multiple sub-steps or multiple stages, which are not necessarily executed at the same time, but can be executed at different times, and the execution sequence is not necessarily sequential, but can be executed in rotation or alternation with at least part of other steps or sub-steps or stages of other steps.

[0136] The above only describes some embodiments of the present application. It should be pointed out that, for those skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, which should also be considered as the protection scope of the present application.

Claims

1. A display device, characterized by comprising: The display device comprises: a first substrate; a second substrate, disposed opposite to the first substrate, forming an accommodating space, the accommodating space comprising a display area and a camera area; a black matrix layer, located on a side of the first substrate close to the second substrate, and located in the camera area, the black matrix layer having a plurality of first openings; a first electrode layer, located on a side of the black matrix layer close to the second substrate, and located in the camera area; a slope structure, located on a side of the second substrate close to the first substrate, and located in the camera area; a second electrode layer, covering at least a side of the slope structure close to the first substrate, and located in the camera area; a liquid dielectric layer, located between the first electrode layer and the second electrode layer, the liquid dielectric layer comprising a plurality of light-shielding ions; an imaging element, located on a side of the second substrate away from the first substrate, and located in the camera area; the camera area comprising a plurality of imaging units, each imaging unit comprising one imaging element and a plurality of first openings, the number of first openings between any two adjacent imaging elements being equal; the slope structure corresponding to the first opening one by one, the orthographic projection of each slope structure on the second substrate covering the orthographic projection of one first opening on the second substrate, the orthographic projection of each imaging element on the second substrate covering the orthographic projection of one first opening on the second substrate; the second electrode layer comprising a reflective electrode and a light-transmitting electrode; the orthographic projection of the reflective electrode on the second substrate at least partially overlapping the orthographic projection of the imaging element on the second substrate, and the orthographic projection of the light-transmitting electrode on the second substrate being spaced apart from the orthographic projection of the imaging element on the second substrate.

2. A display device according to claim 1, characterised in that The liquid dielectric layer comprises electronic ink, and the light-shielding ions comprise positively charged light-shielding dyes.

3. A display device according to claim 2, characterised in that When the display device is in a camera-off state, the driving voltage of the first electrode is less than the driving voltage of the second electrode, and the light-shielding ions cover all the first openings; When the display device is in a camera-on state, the driving voltage of the second electrode in a second region is less than the driving voltage of the first electrode, which is less than the voltage of the second electrode in a first region, and the light-shielding ions cover the first openings in the first region and expose the first openings in the second region.

4. A display device according to claim 2, characterised in that The refractive index of the electronic ink is greater than the refractive index of the first substrate and the second substrate, and the included angle between the inclined surface of the slope structure and the second substrate is not less than 40 degrees.

5. The display device of claim 1, wherein, The display device further comprises a first reflective layer and a second reflective layer; the first reflective layer is located between the black matrix layer and the first electrode layer, and has a plurality of second openings, the orthographic projection of the first opening on the first substrate coinciding with the orthographic projection of the second opening on the first substrate; The second surface reflection layer is located between the slope structure and the second substrate, and has a plurality of third openings, a projection of the third openings on the second substrate coincides with a projection of the imaging element on the second substrate.

6. A display device according to claim 5, characterised in that, A projection of the slope structure on the second substrate is spaced from a projection of the imaging element on the second substrate.

7. A display device according to claim 5, characterised in that The liquid dielectric layer comprises electronic ink, a refractive index of the electronic ink is equal to a refractive index of the first substrate and the second substrate, and an included angle between the inclined surface of the slope structure and the second substrate is not greater than 35 degrees.

8. The display device of claim 1, wherein, The display device further comprises a lens structure, a projection of the lens structure on the first substrate at least partially coincides with a projection of the first opening on the first substrate.

9. The display device of claim 1, wherein, The liquid dielectric layer comprises electrophoretic liquid, and the light-shielding ions comprise positively charged metal ion colloids.

10. A display device according to claim 9, characterised in that, When the display device is in a camera-off state, a driving voltage of the first surface electrode is less than a driving voltage of the second surface electrode, and the light-shielding ions completely cover the first opening; When the display device is in a camera-on state, a driving voltage of the second surface electrode in a second region is less than a driving voltage of the first surface electrode, a driving voltage of the first surface electrode is less than a voltage of the second surface electrode in a first region, the light-shielding ions cover the first opening in the first region and form a reflection layer on the slope structure in the second region.

11. A display device comprising: The display device as claimed in any one of claims 1-10.

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