CN113641029B

CN113641029B - Display device

Info

Publication number: CN113641029B
Application number: CN202110851651.1A
Authority: CN
Inventors: 周启凡; 陈志启
Original assignee: Wuhan Tianma Microelectronics Co Ltd
Current assignee: Wuhan Tianma Microelectronics Co Ltd
Priority date: 2021-07-27
Filing date: 2021-07-27
Publication date: 2023-05-05
Anticipated expiration: 2041-07-27
Also published as: CN113641029A

Abstract

The application discloses a display device. The display device comprises a first display area, a second display area at least partially surrounding the first display area, a light emitting surface and a backlight surface, wherein the light transmittance of the first display area is larger than that of the second display area. The photosensitive element is arranged on one side of the backlight surface of the display panel and comprises a photosensitive surface. The rotary optical component is arranged at one side of the backlight surface of the display panel at intervals with the photosensitive element, the projection of the rotary optical component on the plane of the display panel overlaps with the projection of the first display area on the plane of the display panel, and the rotary optical component comprises a luminous surface and a light reflecting surface which are opposite, and the photosensitive surface faces the light reflecting surface. The display device comprises a first state and a second state, wherein the light emitting surface of the rotary optical assembly faces the display panel in the first state, and the light reflecting surface of the rotary optical assembly faces the display panel in the second state. The first display area has shooting and display functions.

Description

Display device

Technical Field

The application relates to the technical field of display, in particular to a display device.

Background

The display device can be provided with a camera under the screen, and when the camera is arranged, a light transmission area needs to be arranged on the display panel. Since the light-transmitting region needs to transmit light, the light-transmitting region of the display panel is not displayed or is affected, and there is a problem that normal display is not possible.

Disclosure of Invention

The embodiment of the application provides a display device which can take shooting and full-screen display functions into consideration.

In a first aspect, there is provided a display device including: the display panel comprises a first display area, a second display area at least partially surrounding the first display area, a light emitting surface and a backlight surface opposite to the light emitting surface, wherein the light transmittance of the first display area is larger than that of the second display area; the photosensitive element is arranged on one side of the backlight surface of the display panel and comprises a photosensitive surface; the rotary optical component is arranged at one side of the backlight surface of the display panel at intervals with the photosensitive element, the projection of the rotary optical component on the plane of the display panel and the projection of the first display area on the plane of the display panel are at least partially overlapped, and the rotary optical component comprises a luminous surface and a light reflecting surface which are opposite, and the photosensitive surface faces the light reflecting surface; the display device comprises a first state and a second state, wherein the light emitting surface of the rotary optical assembly faces the display panel in the first state, and the light reflecting surface of the rotary optical assembly faces the display panel in the second state.

In the display device provided by the embodiment of the application, in the first state, the light emitting surface of the rotating optical assembly faces the display panel, so that the rotating optical assembly emits light and displays in the first light-transmitting display area to compensate the light-transmitting area of the display panel, and the full-screen display function of the display device is realized. In the second state, the light reflecting surface of the rotating optical component faces the display panel, so that the rotating optical component can reflect or refract the light passing through the first display area to the photosensitive element, and the photosensitive element realizes the imaging function of the display device. The display device can enable the first display area to have shooting and full-screen display functions through switching of the first state and the second state.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a display device according to an embodiment of the present application;

FIG. 2 is a schematic cross-sectional view of the display device shown in FIG. 1 along A-A in a first state;

FIG. 3 is a schematic cross-sectional view of the display device shown in FIG. 1 along A-A in a second state;

fig. 4 is a schematic structural diagram of a display device according to an embodiment of the present disclosure;

fig. 5 is a schematic structural diagram of a display device according to an embodiment of the present disclosure; fig. 6 is a schematic structural diagram of a display device according to an embodiment of the present disclosure;

FIG. 7 is a schematic diagram of a light emitting device of the display device shown in FIG. 1;

fig. 8 is a schematic structural diagram of a display device according to an embodiment of the present disclosure;

fig. 9 is a schematic structural diagram of a display device according to an embodiment of the present disclosure;

fig. 10 is a schematic structural diagram of a display device according to an embodiment of the present disclosure;

fig. 11 is a schematic diagram of another structure of a display device according to an embodiment of the present application.

Reference numerals:

10. a display panel;

110. a backlight module; 120. a liquid crystal module; 121. a first substrate; 122. a driving circuit layer; 123. a first polarizing plate; 124. a pixel electrode; 125. a liquid crystal layer; 126. a common electrode; 127. a light filter; 128. a second polarizing plate; 129. a second substrate;

210. a substrate; 220. an array layer; 230. a planarization layer; 240. a light-emitting functional layer; 241. an anode; 242. an organic light emitting layer; 243. a cathode; 245. a pixel defining opening; 246. a pixel definition layer; 247. a pixel defining opening; 248. a display light emitting device; 270. an encapsulation layer; 280. a cover plate;

310. a photosensitive element; 320. rotating the optical assembly; 321. a light emitting element; 322. an optical element; 323. a light emitting unit; 324. a light emitting substrate; 325. a first housing; 326. a first accommodation chamber; 327. a first opening; 328. a second opening; 329. a second housing; 330. a first hole; 340. a light shielding structure; 341. a side wall portion; 342. a bottom wall portion;

410. a rear housing; 411. a second hole;

a1, a first display area; a2, a second display area; s1, a light-emitting surface; s2, a backlight surface; s31, a luminous surface; s32, a light reflecting surface; s33, a photosensitive surface; l, first axis.

Detailed Description

Features and exemplary embodiments of various aspects of the present application are described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by showing an example of the present application.

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The embodiments will be described in detail below with reference to the accompanying drawings.

Relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.

It will be understood that when a layer, an area, or a structure is described as being "on" or "over" another layer, another area, it can be referred to as being directly on the other layer, another area, or another layer or area can be included between the layer and the other layer, another area. And if the component is turned over, that layer, one region, will be "under" or "beneath" the other layer, another region.

In addition, the term "and/or" herein is merely an association relationship describing an association object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

It should be understood that in the embodiments of the present application, "B corresponding to a" means that B is associated with a, from which B may be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may also determine B from a and/or other information.

The applicant has found that if an under-screen camera is provided on a display panel of a display device, in order to enable light to be smoothly incident on the display panel and used for imaging, it is necessary to provide a light-transmissive image pickup area on the display panel. Because the image capturing area needs to transmit light, holes are usually formed on the display panel, and therefore, the image capturing area cannot be provided with pixels for display, and therefore, the image capturing area cannot be displayed normally.

In view of the foregoing, the applicant has proposed a display device in which a light-transmitting first display area is provided on a display panel of the display device, and a rotating optical member is provided in the first display area. When the display device is in the first state, the light emitting surface of the rotating optical component faces the display panel and displays light together with the second display area of the display panel, and the photosensitive element can not image one side of the light emitting surface of the display panel. When the display device is in the second state, the photosensitive element images the light emitting surface of the display panel, the light reflecting surface of the rotating optical assembly faces the display panel, and the light rays entering the first display area from one side of the light emitting surface of the display panel are reflected by the light reflecting surface and irradiated to the photosensitive element, and the photosensitive element images one side of the light emitting surface of the display panel. The display device can be switched between a first state and a second state, so that display and under-screen imaging are considered simultaneously: when the under-screen imaging is needed, switching to a second state, and performing imaging operation; when the under-screen imaging is not needed, the first state is switched to, and the display lighting operation is performed.

Fig. 1 is a schematic structural diagram of a display device according to an embodiment of the present application. Fig. 2 is a schematic cross-sectional view of the display device shown in fig. 1 along A-A in a first state. FIG. 3 is a schematic cross-sectional view of the display device shown in FIG. 1 along A-A in a second state.

Referring to fig. 1 to 3, an embodiment of the present application provides a display device including a display panel 10, a photosensitive element 310, and a rotating optical assembly 320. The display panel 10 includes a first display area A1, a second display area A2 at least partially surrounding the first display area A1, a light-emitting surface S1, and a backlight surface S2 opposite to the light-emitting surface S1, where the first display area A1 has a light transmittance greater than that of the second display area A2. The photosensitive element 310 is disposed on the backlight surface S2 side of the display panel 10, and the photosensitive element 310 includes a photosensitive surface S33. The rotating optical component 320 is disposed at a distance from the photosensitive element 310 on the backlight surface S2 side of the display panel 10, the projection of the rotating optical component 320 on the plane of the display panel 10 at least partially overlaps the projection of the first display area A1 on the plane of the display panel 10, the rotating optical component 320 includes a light emitting surface S31 and a light reflecting surface S32 opposite to each other, and the photosensitive surface S33 faces the light reflecting surface S32. The display device includes a first state in which the light emitting surface S31 of the rotating optical assembly 320 faces the display panel 10, and a second state in which the light reflecting surface S32 of the rotating optical assembly 320 faces the display panel 10.

With continued reference to fig. 1, the first display area A1 of the display panel 10 is a region with good light transmittance. The light rays on one side of the light emitting surface S1 of the display panel 10 can be incident on the first display area A1, and the light rays incident on the first display area A1 can be used for under-screen imaging. The second display area A2 is a main display area of the display panel 10, and the structure of the display panel 10 in the second display area A2 is not limited. Since the first display area A1 has a larger light transmittance than the second display area A2, the first display area A1 and the second display area A2 are displayed differently.

The display panel 10 may be a liquid crystal display panel, an Organic Light-Emitting Diode (OLED), a micro-LED display panel (micro-LED), or a mini-LED display panel (mini-LED), which is not limited in this case. The embodiment of the present application will be described by taking the display panel 10 as a liquid crystal display panel as an example.

fig. 5 is a schematic structural diagram of a display device according to an embodiment of the present disclosure;

referring to fig. 4 and 5, the display panel 10 is a liquid crystal display panel, and the display panel 10 includes a liquid crystal module 120 filled with a liquid crystal layer 125 and a backlight module 110. The backlight module 110 includes a backlight light emitting surface, and the liquid crystal module 120 is located at one side of the backlight light emitting surface of the backlight module 110.

In some alternative embodiments, the backlight module 110 may employ a direct type backlight. The backlight module 110 includes a plurality of backlight light sources disposed on a planar circuit board, which is only a specific example of the present application and not a limitation of the present application. The backlight light source may select an LED chip.

Referring to fig. 4 and 5, the liquid crystal module 120 includes a first substrate 121, a driving circuit layer 122, a first polarizer 123, a pixel electrode 124, a liquid crystal layer 125, a common electrode 126, a filter 127, a second polarizer 128, and a second substrate 129. The backlight module 110 is located at one side of the first substrate 121. The second substrate 129 is disposed on a side of the first substrate 121 facing away from the backlight module 110, and the liquid crystal layer 125 is encapsulated between the first substrate 121 and the second substrate 129. The driving circuit layer 122 is disposed between the first substrate 121 and the liquid crystal layer 125, and the driving circuit layer 122 includes a plurality of TFT structures (Thin Film Transistor thin film transistors) electrically connected to the pixel electrode 124. The common electrode 126 is located between the liquid crystal layer 125 and the second substrate 129. The electric field between the pixel electrode 124 and the common electrode 126 is changed by controlling the potential of the pixel electrode 124, so that the liquid crystal molecules in the liquid crystal layer 125 are deflected, and the polarization direction of the light passing through the liquid crystal layer 125 is changed. The first polarizer 123 is located at a side of the first substrate 121 facing the backlight module 110. The second polarizer 128 is located on a side of the second substrate 129 facing away from the liquid crystal layer 125. The surface light emitted from the backlight module 110 passes through the first polarizer 123 to form polarized light polarized along the first direction. The polarized light is deflected by the liquid crystal layer 125, and the polarization direction is changed. The filter 127 is disposed between the common electrode 126 and the second substrate 129, and includes a plurality of filter units of different colors. The polarized light whose polarization direction is changed is filtered through each filter unit of the filter 127 to form polarized light corresponding to the color of each filter unit. The components of the differently colored polarized light along the polarization direction of the second polarizer 128 pass through the second polarizer 128 such that the intensities of the differently colored polarized light passing through the second polarizer may be different. By controlling the potential difference between the pixel electrode 124 and the common electrode 126, the deflection angle of the liquid crystal molecules can be adjusted, thereby controlling the intensity of polarized light passing through the second polarizer 128, obtaining light of different colors with adjustable light intensity, and mixing the light of different colors to realize color display. Illustratively, the color of the filter unit may be three basic colors of red, green and blue. The display panel 10 includes a plurality of pixels, each including at least three sub-pixels, each of which emits light of one of red, green, and blue colors. The above structure of the liquid crystal display panel is only one example, and the present application is not limited to the specific structure of the liquid crystal display panel.

Referring to fig. 4 and 5, the display device may be switched between a first state and a second state. The first display area A1 and the second display area A2 together display a picture in the first state. In the first state, the rotating optical assembly 320 rotates until the light emitting surface S31 of the rotating optical assembly 320 faces the display panel. The light emitting surface S31 of the rotating optical assembly 320 is used for displaying light emission, so that both the first display area A1 and the second display area A2 can have good display effects. The second state is an under-screen imaging state of the first display area A1. In the second state, the rotating optical assembly 320 rotates such that the light reflecting surface S32 faces the display panel 10. Light incident from one side of the light-emitting surface S1 of the display panel 10 is reflected or refracted by the light-reflecting surface S32 and turned to the photosensitive element 310, and imaging light is provided to the photosensitive element 310.

Referring to fig. 4 and 5, the photosensitive element 310 is positioned at the backlight surface S2 side of the display panel 10, and the photosensitive surface S33 of the photosensitive element 310 faces the light reflection surface S32 of the rotating optical assembly 320, so that the light rays changing the optical path after passing through the light reflection surface S32 can be directed to the photosensitive surface S33 of the photosensitive element 310 and used for imaging of the photosensitive element 310. The photosensitive element 310 may be located on the backlight surface S2 side of the first display area A1 of the display panel 10, or may be located on the backlight surface S2 side of the second display area A2 of the display panel 10. It can be appreciated that the photosensitive element 310 is located on the backlight surface S2 side of the second display area A2 of the display panel 10, which is beneficial to reduce the area of the first display area A1, thereby further improving the display image quality of the display panel 10. As an embodiment, the photosensitive element 310 and the rotating optical component 320 are disposed at intervals, and no other structural member or structural member with a light hole may be disposed therebetween, for example, a mounting frame for fixing the photosensitive element 310 and/or the rotating optical component 320, and a light-transmitting optical module may be disposed therebetween, so as to optimize the light path and improve the light utilization and definition of the photosensitive element 310 during imaging.

Further, the rotating optical assembly 320 includes a light emitting element 321, a rotating assembly (not shown in the figure), and an optical element 322. The light emitting surface S31 of the rotating optical assembly 320 is located on the light emitting element 321, the light reflecting surface S32 is located on the optical element 322, the light emitting element 321 and the optical element 322 are connected with the rotating assembly, and the rotating assembly drives the light emitting element 321 and the optical element 322 to synchronously rotate around the first axis L, and the first axis L passes through the light sensing surface S33. The light emitting element 321 of the rotating optical element 320 can perform light emission display, and the light emitting surface S31 of the light emitting element 321 is the light emitting surface S31 of the rotating optical element 320. The light emitting element 321 may be one or more of a mini-LED, a micro-LED, and an OLED, for example. The optical element 322 of the rotating optical assembly 320 is capable of changing the optical path of the light, and upon changing the optical path of the light, the light reflecting surface S32 of the rotating optical assembly 320 is formed. Illustratively, the optical element 322 may change the optical path of the light by reflection, total reflection or prism refraction, and the optical path change of the light may be equivalent to reflection of a single optical surface, and the equivalent single optical surface is the light reflecting surface S32. The light emitting element 321 and the optical element 322 of the rotating optical assembly 320 are rotated in synchronization by the rotating assembly. The switching between the first state and the second state of the display panel is achieved by rotating the light emitting element 321 and the optical element 322. In the first state, the light emitting element 321 is to be used for display light emission, and thus the light emitting element 321 emits light in a direction away from the first axis L.

It should be noted that, the rotation assembly is used to drive the optical element 322 and the light emitting element 321 to rotate around the first axis L, and a specific driving form of the rotation assembly is not limited, and a motor direct driving, a gear set driving, a conveyor belt driving, or a telescopic cylinder gear rack driving may be adopted. The rotation assembly may rotate in the same direction when the driving optical element 322 and the light emitting element 321 rotate around the first axis L, and stop rotating when the display device is rotated to a corresponding angle when in the first state or the second state; and the display device can also rotate reciprocally, and can rotate back and forth between corresponding angles when being in the first state or the second state.

The optical element 322 comprises a planar mirror. The first axis L is parallel to the light-emitting surface S1 of the display panel, and the first axis L and the plane mirror are arranged at an included angle of 45 degrees. When the optical element 322 is a reflective plane mirror, the light reflecting surface S32 is a mirror surface of the reflective plane mirror, which can simplify the structure of the optical element 322, and is helpful for reducing the space occupied by the optical element 322 and the thickness of the display device. Since the angle between the plane mirror and the first axis L is 45 °, the light vertically incident from the first display area A1 is reflected by the plane mirror, and can be directed to the photosensitive element 310 along the direction parallel to the plane of the display panel, which is helpful for further reducing the thickness of the display device.

It is understood that the first axis L of the rotating optical assembly 320 is a virtual axis when the light emitting element 321 and the optical element 322 rotate, and the physical rotation axis structure may be set according to actual requirements, and the axis of the rotation axis structure coincides with the first axis L.

Alternatively, the rotating assembly drives the light emitting element 321, the optical element 322, and the photosensitive element 310 to rotate synchronously about the first axis L. Since the light emitting element 321, the optical element 322 and the photosensitive element 310 rotate synchronously, no matter what angle the three rotate, as long as the external light of the display device can be irradiated onto the optical element 322, the light can be irradiated onto the photosensitive element 310 through the optical element 322, so as to realize the under-screen imaging of the display device.

In the first state, the light emitting element 321 is located between the display panel and the optical element 322; in the second state, the optical element 322 is located between the display panel 10 and the light emitting element 321. When the display device is in the first state, the light emitting element 321 is located between the display panel 10 and the optical element 322, and the light emitting element 321 emits light to display in a direction away from the first axis L, so that the light emitting element 321 can emit light to display in the first display area A1, so that the display panel can perform light emitting display in both the first display area A1 and the second display area A2. When the display device is in the second state, the optical element 322 is located between the display panel and the light emitting element 321, and the light incident from the first display area A1 is reflected and/or refracted by the light reflecting surface S32 of the optical element 322 and then directed to the photosensitive element 310, so that the photosensitive element 310 can perform photosensitive imaging. In consideration of the positional relationship of the light emitting element 321 and the optical element 322, when the display device is switched from the first state to the second state, and from the second state to the first state, the rotation angle of the rotating optical assembly 320 is an odd multiple of 180 °.

Fig. 6 is a schematic structural diagram of a display device according to an embodiment of the present application. Fig. 7 is a schematic diagram of a structure of a light emitting element of the display device shown in fig. 1.

Further, referring to fig. 6 and 7, the display panel further includes a first hole 330 extending in a thickness direction of the display panel, the first hole 330 penetrating at least part of the display panel 10; the first hole 330 is located in the first display area A1, and the light emitted from the light emitting surface S31 of the rotating optical assembly 320 in the first state is incident to the display panel 10 through the first hole 330; the light emitting element 321 includes a plurality of light emitting units 323, and the plurality of light emitting units 323 includes light emitting units 323 of three primary colors; the orthographic projection of the light emitting element 321 on the light emitting surface S1 in the thickness direction of the display panel 10 covers the orthographic projection of the first hole 330 on the light emitting surface S1 in the thickness direction of the display panel 10. The first display area A1 is provided with a high light transmittance by providing the first hole 330 in the display panel 10. The light on the light emitting surface S1 side of the display panel 10 can be directly injected through the first hole 330 and used for under-screen imaging, so that the utilization rate of the light is improved, and the definition and accuracy of the under-screen imaging are improved. Since the first hole 330 is formed in the display panel 10, the display panel 10 cannot normally display at the position corresponding to the first hole 330. In the first state, the tricolor light emitting unit 323 can be used as a light emitting unit of the display panel, so that the first display area A1 can also display light, and the second display area A2 is matched, so that the overall display of the display panel cannot be obviously influenced by the first hole 330, namely, the full-screen display is realized.

Specifically, with continued reference to fig. 7, the rotating optical assembly 320 further includes a light emitting substrate 324, and the light emitting units 323 are uniformly distributed on the light emitting substrate 324. The arrangement of the light emitting units 323 of three primary colors on the light emitting substrate 324 is not limited. Illustratively, the arrangement of the different primary color light emitting units 323 of the three primary colors light emitting units 323 is the same as the arrangement of the pixel units of the display panel.

Optionally, with continued reference to fig. 6, the display panel further includes a light shielding structure 340, at least a portion of the light shielding structure 340 being located at a sidewall of the first aperture 330. When the display device is in the first state, the light emitting element 321 emits light for display, so that the light emitted by the light emitting element 321 may interfere with the display in the second display area A2. By providing the light shielding structure 340, display interference of the light emitting element 321 to the second display area A2 can be reduced. In addition, when the display device is in the second state, the light shielding structure 340 can reduce the interference of the light emitted by the second display area A2 on the photosensitive imaging of the photosensitive element 310.

Alternatively, with continued reference to fig. 6, the light shielding structure 340 includes an integral side wall portion 341 and a bottom wall portion 342, the side wall portion 341 at least partially covers the side wall of the first hole 330, and the bottom wall portion 342 at least partially covers the backlight surface S2. The sidewall portion 341 is located at the sidewall of the first hole 330, and is capable of blocking light at the sidewall of the first hole 330. The bottom wall portion 342 can block light at the display panel backlight S2. The side wall portion 341 and the bottom wall portion 342 are integrally formed, and can block light rays at a junction between the side wall of the first hole 330 and the backlight surface S2 of the display panel. The shielding effect of the light shielding structure 340 on the light can be improved by the side wall portion 341 and the bottom wall portion 342, and the interference of the light emitting element 321 on the second display area A2 and the interference of the second display area A2 on the light receiving element 310 can be further reduced.

Considering that the display panel is a liquid crystal display panel, the display panel includes a liquid crystal module 120 filled with a liquid crystal layer 125 and a backlight module 110. The backlight module 110 includes a backlight light emitting surface, and the liquid crystal module 120 is located at one side of the backlight light emitting surface of the backlight module 110. Further, with continued reference to fig. 6, the first hole 330 penetrates the backlight module, and the liquid crystal is located in the second display area A2. Considering that the backlight module is an opaque module, the first hole 330 penetrates the backlight module, so that the display panel in the area corresponding to the first hole 330 has good light transmittance. Since the liquid crystal module is filled with liquid crystal, the opening may affect the function of the liquid crystal module, and thus the first hole 330 only penetrates the backlight module. The liquid crystal module is designed to fill the second display area A2 with liquid crystal, but not fill the first display area A1 with liquid crystal, so that the liquid crystal can be prevented from interfering the light entering the first display area A1, and the liquid crystal can be prevented from affecting the display luminescence of the light emitting element 321.

Fig. 8 is a schematic structural diagram of a display device according to an embodiment of the present application. Fig. 9 is a schematic structural diagram of a display device according to an embodiment of the present application.

Further, referring to fig. 8 and 9, the display device further includes a rear housing 410, the photosensitive element 310 and the rotating optical assembly 320 are located on a side of the rear housing 410 facing the display panel, the rear housing 410 includes a second hole 411 penetrating the rear housing 410, and an orthographic projection of the second hole 411 on the light emitting surface S1 along a thickness direction of the display panel is located on the first display area A1. The rear case 410 is a rear protective case of the display device, and the photosensitive element 310 and the rotating optical assembly 320 are located between the rear case 410 and the display panel. The light outside the display device rear case 410 can be directed to the rotating optical assembly 320 through the second hole 411, and reflected and/or refracted by the light reflecting surface S32, so that the light is directed to the photosensitive element 310. Thus, the photosensitive element 310 can be used for both front-facing imaging of a display device and rear-facing imaging of a display device.

Specifically, referring to fig. 8 and 9, the light reflecting surface S32 of the rotating optical assembly 320 faces the rear case 410 in the first state, and the light emitting surface S31 of the rotating optical assembly 320 faces the rear case 410 in the second state. When the display device is in the first state, the light emitting surface S31 of the rotating optical assembly 320 faces the display panel, and the light reflecting surface S32 faces the rear case 410. The light emitting surface S31 is used for displaying and emitting light, so as to realize the full screen display of the display device. Meanwhile, the light rays entering through the second hole 411 are reflected and/or refracted by the light reflecting surface S32 and then are emitted to the photosensitive element 310, so that the rear-end camera imaging of the display device is realized. When the display device is in the second state, the rotating optical assembly 320 rotates, the light emitting surface S31 faces the rear case 410, and the light reflecting surface S32 faces the display panel. The light emitting surface S31 emits light toward the second hole 411, and can be used for illumination, for example, as a flash. Meanwhile, the light rays entering through the first hole 330 are reflected and/or refracted by the light reflecting surface S32 and then are emitted to the photosensitive element 310, so that front-end camera imaging of the display device is realized.

In another embodiment of the present application, the rotating assembly drives the light emitting element 321 and the optical element 322 to rotate synchronously, and the photosensitive element 310 does not rotate with the light emitting element 321 and the optical element 322.

Fig. 10 is a schematic diagram of another structure of the display device according to the embodiment of the present application.

Specifically, referring to fig. 10, the rotating optical assembly 320 further includes a first housing 325, the first housing 325 includes a first accommodating cavity 326, a first opening 327 and a second opening 328, the optical element 322 is disposed in the first accommodating cavity 326, and the second opening 328 faces the photosensitive element 310; in the first state, the first opening 327 faces away from the display panel, and in the second state, the first opening 327 faces toward the display panel. The first housing 325 serves as a mounting carrier for the optical element 322. When the optical element 322 reflects and/or refracts light, the light enters from the first opening 327 and irradiates the light reflecting surface S32, and the light reflects and/or refracts, and exits from the second opening 328 and further irradiates the photosensitive element 310. When the display device is in the first state, the display device does not need to form an image under the front screen, the first opening 327 faces away from the display panel, and light rays emitted from the light emitting surface S1 of the display panel cannot be blocked, so that full-screen display is realized. When the display device is in the second state, the display device needs under-screen imaging, and the light incident from the light-emitting surface S1 of the display panel is incident on the optical element 322 from the first opening 327 and is incident on the photosensitive element 310 from the second opening 328, so as to realize the front-mounted under-screen imaging of the display device. The light emitting element 321 is also disposed on the first housing 325, and the rotation assembly realizes synchronous rotation of the light emitting element 321 and the optical element 322 by driving the first housing 325 to rotate.

Further, with continued reference to fig. 10, the display device further includes a second housing 329, the photosensitive element 310 is disposed in the second housing 329, and the first housing 325 rotates about the first axis L relative to the second housing 329. The second housing 329 is fixed to the display panel, and the first housing 325 is rotated with respect to the second housing 329. When the rotation assembly drives the light emitting element 321 and the optical element 322 to rotate synchronously, the photosensitive element 310 remains stationary. Since the first housing 325 rotates about the first axis L, as the first housing 325 rotates, light rays can always be directed toward the photosensitive element 310 in the direction of the first axis L and used for off-screen imaging as long as the light rays are reflected and/or refracted by the optical element 322.

In the embodiment of the present application, other structures are the same as or similar to those of the previous embodiment of the present application, and will not be described herein.

In another embodiment of the present application, the display panel is an Organic Light-Emitting Diode (OLED) display panel.

Referring to fig. 11, when the display panel is an OLED display panel, the OLED display panel includes: a substrate 210, an array layer 220, a light emitting functional layer 240, and an encapsulation layer 270. The display layer is located on a substrate 210. The light emitting functional layer 240 is located on a side of the array layer 220 facing away from the substrate 210. The encapsulation layer 270 is located on the side of the light emitting functional layer 240 facing away from the array layer 220. The light emitting functional layer 240 includes a display light emitting device 248, the display light emitting device 248 being located within the display region. The first display area A1 of the display panel is a region having good light transmittance. The light rays on one side of the light emitting surface S1 of the display panel can be incident into the first display area A1, and the light rays incident into the first display area A1 can be used for under-screen imaging. The second display area A2 is a main display area of the display panel, and the structure of the display panel in the second display area A2 is not limited. Since the first display area A1 has a light transmittance greater than that of the second display area A2, the display effect of the first display area A1 is inferior to that of the second display area A2.

Specifically, with continued reference to FIG. 11, the portion of the substrate 210 that is located in the non-display area is transparent. The substrate 210 in the embodiment of the present application may also be a flexible substrate formed of a polymer having a relatively thin thickness, such as polyimide. The substrate may further include a buffer layer, which may include a multi-layered inorganic, organic layer stacked structure to block oxygen and moisture, prevent moisture or impurities from diffusing through the substrate, and provide a flat surface on an upper surface of the substrate, and the specific structure is not described herein.

Specifically, with continued reference to fig. 11, the array layer 220 includes a plurality of thin film transistors (Thin Film Transistor, TFTs) and pixel circuits formed of the thin film transistors for controlling the display light emitting devices 248. The embodiment of the present application describes a structure of a top gate thin film transistor as an example. The array layer 220 includes an active layer for forming a thin film transistor, the active layer including a source region and a drain region formed by doping N-type impurity ions or P-type impurity ions, a channel region being formed between the source region and the drain region; a gate insulating layer on the active layer; and a gate electrode of the thin film transistor on the gate insulating layer. An interlayer insulating layer on the gate electrode, the interlayer insulating layer may be formed of an insulating inorganic layer of silicon oxide or silicon nitride or the like, and alternatively, the interlayer insulating layer may be formed of an insulating organic layer. The source electrode and the drain electrode of the thin film transistor are located on the interlayer insulating layer. The source and drain electrodes are electrically connected (or bonded) to the source and drain regions, respectively, through contact holes formed by selectively removing the gate insulating layer and the interlayer insulating layer.

Optionally, the array layer 220 further includes a passivation layer (not shown) on the thin film transistor. Specifically, the passivation layer is located on the source and drain electrodes. The passivation layer may be formed of an inorganic layer of silicon oxide or silicon nitride or the like or an organic layer.

Optionally, with continued reference to fig. 11, the oled display panel further includes a planarization layer 230 on the array layer 220. The planarization layer 230 may include an organic layer of acryl, polyimide (PI), benzocyclobutene (BCB), or the like, and the planarization layer 230 has a planarization effect.

With continued reference to fig. 11, the display light emitting device 248 may be an Organic Light Emitting Diode (OLED), which is described below as an example of an OLED light emitting device, and in other embodiments of the present application, the display light emitting device 248 may also be an inorganic Light Emitting Diode (LED).

Specifically, with continued reference to fig. 11, a light emitting functional layer 240 is located on the planarization layer 230,taking the display light emitting device 248 as an OLED as an example, the display light emitting device 248 includes an anode electrode 241, a pixel defining layer 246 covering the anode electrode 241, an organic light emitting layer 242, and a cathode electrode 243. The anode 241, the organic light emitting layer 242, and the cathode 243 are sequentially disposed in a direction away from the substrate 210. The anode electrode 241 includes an anode pattern corresponding to a pair of pixel cells, and the anode pattern is connected to a source electrode or a drain electrode of the thin film transistor through a via hole on the planarization layer 230. The pixel defining layer 246 is located on a side of the anode 241 facing away from the array layer 220. The pixel defining layer 246 may be formed of an organic material such as Polyimide (PI), polyamide, benzocyclobutene (BCB), acryl resin, or phenol resin, or of an organic material such as SiN _x Is formed of an inorganic material of (a).

With continued reference to fig. 11, the pixel defining layer 246 includes a plurality of pixel defining openings 247, the pixel defining openings 247 exposing the anode electrode 241. The pixel defining layer 246 covers the edge of the anode pattern. The organic light emitting layer 242 is at least partially filled in the pixel defining opening 247 and contacts the anode electrode 241. The organic light emitting layer 242 within the pixel defining opening 247 forms a minimum display light emitting device 248, each display light emitting device 248 can emit light of different colors according to different organic light emitting layers 242, each display light emitting device 248 and the pixel circuit together form a sub-pixel, a plurality of sub-pixels form a pixel unit, and the plurality of pixel units perform display of a picture.

With continued reference to fig. 11, the encapsulation layer 270 may be a thin film encapsulation layer that is located on a side of the light emitting functional layer 240 that faces away from the array layer 220. The thin film encapsulation layer encapsulates the display layer, i.e., the peripheral edges of the thin film encapsulation layer are in contact with the array layer 220, sealing the light emitting device. Alternatively, the thin film encapsulation layer entirely covers the entire display region and extends from the display region to the non-display region NA where it is in contact with the array layer 220.

With continued reference to fig. 11, the oled display panel further includes a cover plate 280. The cover plate 280 is located at a side of the encapsulation layer 270 facing away from the substrate 210 for protecting the OLED display panel. In the embodiment of the present application, when the photographed object approaches the cover plate 280, the photographed object can be subjected to under-screen imaging.

It is understood that the above structure of the OLED display panel is only one embodiment, and the present application is not limited to the specific structure of the OLED display panel. Further, with continued reference to fig. 11, a first aperture 330 extends through at least a portion of the display panel. Illustratively, the first hole 330 penetrates the substrate 210, the array layer 220, and the light emitting function layer 240, so that the first display area A1 has good light transmittance. Light on the light-emitting surface S1 side of the display panel can be directed to the light-reflecting surface S32 through the first hole 330 for under-screen imaging.

It should be noted that, in the embodiment of the present application, other structures are the same as or similar to those of the foregoing embodiment of the present application, and will not be described herein again.

In summary, in the display device provided in the embodiment of the present application, in the first state, the light emitting surface of the rotating optical assembly faces the display panel, so that the rotating optical assembly emits light and displays in the light-transmitting first display area, and the display function of the display device is implemented together with the display panel; in the second state, the light reflecting surface of the rotating optical assembly faces the display panel, so that the rotating optical assembly can reflect or refract light rays passing through the first display area A1 to the photosensitive element, and the photosensitive element realizes an imaging function of the display device. The display device can have shooting and display functions through switching between the first state and the second state.

While the invention has been described with reference to certain preferred embodiments, it will be understood by those skilled in the art that various changes and substitutions of equivalents may be made and equivalents will be apparent to those skilled in the art without departing from the scope of the invention. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A display device, comprising:

the display panel comprises a first display area, a second display area at least partially surrounding the first display area, a light emitting surface and a backlight surface opposite to the light emitting surface, wherein the light transmittance of the first display area is larger than that of the second display area;

the photosensitive element is arranged on one side of the backlight surface of the display panel and comprises a photosensitive surface;

the rotary optical assembly is arranged at one side of the backlight surface of the display panel at intervals with the photosensitive element, the projection of the rotary optical assembly on the plane of the display panel is overlapped with the projection of the first display area on the plane of the display panel at least partially, the rotary optical assembly comprises a luminous surface and a light reflecting surface which are opposite, and the photosensitive surface faces the light reflecting surface;

the display device includes a first state in which the light emitting surface of the rotating optical assembly faces the display panel, and a second state in which the light reflecting surface of the rotating optical assembly faces the display panel.

2. The display device according to claim 1, wherein the rotating optical assembly includes a light emitting element, a rotating assembly, and an optical element;

the light emitting surface is located the light emitting element, the light reflecting surface is located the optical element, the light emitting element with the optical element all with rotating assembly is connected, rotating assembly drive the light emitting element with the optical element is around first axis synchronous rotation, first axis passes the photosurface.

3. The display device according to claim 2, wherein in the first state, the light-emitting element is located between the display panel and the optical element; in the second state, the optical element is located between the display panel and the light emitting element.

4. The display device of claim 2, wherein the optical element comprises a planar mirror;

the first axis is parallel to the plane where the display panel is located, and the first axis and the plane mirror are arranged at an included angle of 45 degrees.

5. The display device according to claim 2, wherein the rotating optical assembly further comprises a first housing including a first accommodation chamber, a first opening, and a second opening, the optical element being disposed in the first accommodation chamber, the second opening being oriented toward the photosensitive element; in the first state, the first opening faces away from the display panel, and in the second state, the first opening faces towards the display panel.

6. The display device according to claim 5, further comprising a second housing, wherein the photosensitive element is provided to the second housing, and wherein the first housing rotates about the first axis with respect to the second housing.

7. The display device according to claim 2, wherein the rotation assembly drives the light emitting element, the optical element, and the photosensitive element to rotate synchronously about the first axis.

8. The display device according to claim 2, wherein the display panel further includes a first hole extending in a thickness direction of the display panel, the first hole passing through at least part of the display panel; the first hole is positioned in the first display area, and light emitted by the light emitting surface of the rotating optical component in the first state enters the display panel through the first hole;

the light-emitting element comprises a plurality of light-emitting units, and the plurality of light-emitting units comprise light-emitting units with three primary colors; an orthographic projection of the light emitting element on the light emitting surface along the thickness direction of the display panel covers an orthographic projection of the first hole on the light emitting surface along the thickness direction of the display panel.

9. The display device of claim 8, further comprising a light shielding structure, at least a portion of the light shielding structure being located on a sidewall of the first aperture.

10. The display device of claim 9, wherein the light shielding structure includes an integral side wall portion at least partially covering a side wall of the first aperture and a bottom wall portion at least partially covering the backlight surface.

11. The display device of claim 8, wherein the display panel is an organic light emitting diode display panel and the first aperture extends through at least a portion of the display panel.

12. The display device according to claim 8, wherein the display panel is a liquid crystal display panel including a backlight module and a liquid crystal module filled with liquid crystal; the first hole penetrates through the backlight module, and the liquid crystal is located in the second display area.

13. The display device according to claim 1, further comprising a rear housing, wherein the photosensitive element and the rotating optical assembly are both located on a side of the rear housing facing the display panel, wherein the rear housing includes a second hole penetrating the rear housing, and wherein an orthographic projection of the second hole on the light-emitting surface in a thickness direction of the display panel is located in the first display area.

14. The display device according to claim 13, wherein the light reflecting surface of the rotating optical assembly faces the rear housing in the first state, and the light emitting surface of the rotating optical assembly faces the rear housing in the second state.