CN113641029A

CN113641029A - Display device

Info

Publication number: CN113641029A
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: 2021-11-12
Anticipated expiration: 2041-07-27
Also published as: CN113641029B

Abstract

The application discloses a display device. The display device comprises a first display area, a second display area, a light-emitting surface and a backlight surface, wherein the second display area is at least partially arranged around the first display area, and the light transmittance of the first display area is greater than that of the second display area. And 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 on one side of a backlight surface of the display panel at an interval with the photosensitive element, the projection of the rotary optical component on the plane where the display panel is located is overlapped with the projection of the first display area on the plane where the display panel is located, the rotary optical component comprises a light emitting surface and a light reflecting surface which are opposite to each other, 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 rotating optical assembly faces the display panel in the first state, and the light reflecting surface of the rotating optical assembly faces the display panel in the second state. The first display area has the shooting and displaying 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 set up the camera under the screen, when setting up the camera, needs set up the printing opacity region at display panel. Since the light-transmitting region needs to transmit light, the light-transmitting region of the display panel does not display or displays are affected, and thus normal display cannot be performed.

Disclosure of Invention

The embodiment of the application provides a display device, which can give consideration to both shooting and full-screen display functions.

In a first aspect, a display device is provided, 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 greater than that of the second display area; the light sensing element is arranged on one side of the backlight surface of the display panel and comprises a light sensing surface; the rotary optical component is arranged on one side of the backlight surface of the display panel at an interval with the photosensitive element, the projection of the rotary optical component on the plane where the display panel is located is at least partially overlapped with the projection of the first display area on the plane where the display panel is located, the rotary optical component comprises a light emitting 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 rotating optical assembly faces the display panel in the first state, and the light reflecting surface of the rotating optical assembly faces the display panel in the second state.

The display device that this application embodiment provided, at first state, the light emitting area of rotatory optical assembly faces display panel for select to change optical assembly and give out light in non-light tight first display area and show, with the light transmission area of compensation display panel, realize display device's full screen display function. In the second state, the light reflecting surface of the rotating optical assembly faces the display panel, so that the light rays passing through the first display area can be reflected or refracted to the photosensitive element by the rotating optical assembly, and the photosensitive element realizes the imaging function of the display device. The display device can enable the first display area to have the functions of shooting and full-screen display 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 needed to be used 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 it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

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

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

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

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

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

fig. 11 is a schematic structural diagram 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. An optical 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; 244. a pixel definition layer 245, a pixel definition opening; 246. a light emitting device; 247. the pixel defines an opening; 248. a display light emitting device; 270. a packaging layer; 280. a cover plate;

310. a photosensitive element; 320. a rotating optical assembly; 321. a light-emitting element 321; 322. an optical element 322; 323. a light emitting unit; 324. a light emitting substrate; 325. a first housing; 326. a first receiving cavity 326; 327. a first opening; 328. a second opening; 329. a second housing; 330. a first hole; 340. a light shielding structure; 341. a sidewall 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 light-emitting 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 will be 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 illustrating examples thereof.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. 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. Also, 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 identical elements in a process, method, article, or apparatus that comprises the element.

It will be understood that when a layer, region or layer is referred to as being "on" or "over" another layer, region or layer in describing the structure of the component, it can be directly on the other layer, region or layer or intervening layers or regions may also be present. Also, if the component is turned over, one layer or region may be "under" or "beneath" another layer or region.

In addition, the term "and/or" herein is only one kind of association relationship describing an associated object, and means that there may be three kinds of relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

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

The applicant has found that if an off-screen camera is provided on the display panel of a display device, in order to allow light to be smoothly incident on the display panel and used for imaging, it is necessary to provide the display panel with a light-transmissive image pickup region. Because the image pickup area needs to be transparent, a hole is usually formed in the display panel, and therefore pixels for display cannot be generally arranged in the image pickup area, and the image pickup area cannot normally display.

In view of the above problem, the applicant has proposed a display device in which a first display region that transmits light is provided on a display panel of the display device, and a rotating optical member is provided in the first display region. When the display device is in the first state, the light emitting surface of the rotating optical assembly faces the display panel and displays light together with the second display area of the display panel, and the photosensitive element does not form an image on the light emitting surface side 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 reflection surface of the rotating optical assembly faces the display panel, light rays emitted into the first display area from one side of the light-emitting surface of the display panel are reflected by the light reflection surface to irradiate 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 the display and the off-screen imaging are compatible: when the off-screen imaging is needed, switching to a second state and carrying out imaging operation; and when the off-screen imaging is not needed, switching to the first state and performing display luminescence operation.

Fig. 1 is a schematic structural diagram of a display device according to an embodiment of the present disclosure. Fig. 2 is a schematic cross-sectional view taken along a-a of the display device shown in fig. 1 in a first state. Fig. 3 is a schematic cross-sectional view taken along a-a of the display device shown in fig. 1 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 exit surface S1, and a backlight surface S2 opposite to the light exit surface S1, wherein the light transmittance of the first display area a1 is greater than that of the second display area a 2. The light sensing element 310 is disposed on the backlight surface S2 side of the display panel 10, and the light sensing element 310 includes a light sensing surface S33. The rotating optical assembly 320 is disposed on the backlight surface S2 side of the display panel 10 and spaced apart from the light sensing element 310, a projection of the rotating optical assembly 320 on the plane of the display panel 10 at least partially overlaps a projection of the first display area a1 on the plane of the display panel 10, the rotating optical assembly 320 includes a light emitting surface S31 and a light reflecting surface S32, which are opposite to each other, and the light sensing 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 region a1 of the display panel 10 is a region with better light transmittance. Light from one side of the light emitting surface S1 of the display panel 10 can enter the first display area a1, and the light entering the first display area a1 can be used for off-screen imaging. The second display region a2 is the main display region of the display panel 10, and the structure of the display panel 10 in the second display region a2 is not limited. Since the first display region a1 has a light transmittance greater than that of the second display region a2, the first display region a1 has a difference in display from the second display region a 2.

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

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 emitting surface, and the liquid crystal module 120 is located at one side of the backlight 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 is not limited to 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 polarizing plate 123, a pixel electrode 124, a liquid crystal layer 125, a common electrode 126, a filter 127, a second polarizing plate 128, and a second substrate 129. The backlight module 110 is disposed on 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 transistors), and the TFT structures are electrically connected to the pixel electrodes 124. The common electrode 126 is positioned 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 electric potential of the pixel electrode 124, so that liquid crystal molecules in the liquid crystal layer 125 are deflected, and the polarization direction of light passing through the liquid crystal layer 125 is changed. The first polarizer 123 is located on a side of the first substrate 121 facing the backlight assembly 110. The second polarizer 128 is located on the 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 in a first direction. The polarized light is deflected by the liquid crystal layer 125, and the polarization direction is changed. The optical filter 127 is located between the common electrode 126 and the second substrate 129, and includes a plurality of filter units with different colors. The polarized light whose polarization direction is changed is filtered by each filter unit of the filter 127 to form polarized light corresponding to the color of each filter unit. The components of the polarized light of different colors in the polarization direction of the second polarizer 128 pass through the second polarizer 128 so that the intensities of the polarized light of different colors 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, so as to control the intensity of the polarized light passing through the second polarizer 128, thereby obtaining light with adjustable light intensity and different colors, and the light with different colors is mixed to realize color display. Illustratively, the color of the filter unit may adopt three basic colors of red, green and blue. The display panel 10 includes a plurality of pixels, each of which includes at least three sub-pixels, each of which emits light of one of red, green, and blue colors. The structure of the liquid crystal display panel is just an example, and the present application does not limit 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 display pictures together 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 element 320 is used for displaying light, so that the first display area a1 and the second display area a2 both have good display effect. The second state is the off-screen imaging state of the first display area a 1. In the second state, the rotating optical assembly 320 rotates such that the light reflecting surface S32 faces the display panel 10. The light beam incident from the light emitting surface S1 side of the display panel 10 is reflected or refracted by the light reflecting surface S32 and turns to the photosensitive element 310, so as to provide an image forming light beam to the photosensitive element 310.

Referring to fig. 4 and 5, the photosensitive element 310 is located on the backlight surface S2 side of the display panel 10, and the photosensitive surface S33 of the photosensitive element 310 faces the light reflecting surface S32 of the rotating optical component 320, so that the light rays that have changed optical paths after passing through the light reflecting 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 line board 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 understood that the light sensing 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 reducing 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 assembly 320 are disposed at an interval, and other structures or structures with light holes may not be disposed between the photosensitive element 310 and the rotating optical assembly 320, for example, a mounting frame for fixing the photosensitive element 310 and/or the rotating optical assembly 320 may be disposed between the photosensitive element 310 and the rotating optical assembly 320, and a light-transmitting optical module may be disposed between the photosensitive element 310 and the rotating optical assembly for optimizing a light path and improving light utilization rate 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, both the light emitting element 321 and the optical element 322 are connected to the rotating assembly, the rotating assembly drives the light emitting element 321 and the optical element 322 to synchronously rotate around a first axis L, and the first axis L passes through the light sensing surface S33. The light emitting element 321 of the rotating optical assembly 320 can emit light, and the light emitting surface S31 of the light emitting element 321 is the light emitting surface S31 of the rotating optical assembly 320. Illustratively, the light emitting element 321 may be one or more of a mini-LED, a micro-LED, and an OLED. The optical element 322 of the rotating optical element 320 is capable of changing the optical path of the light, and when the optical path of the light is changed, the light reflecting surface S32 of the rotating optical element 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 change of the optical path of the light may be equivalent to reflection by a single optical surface, i.e. the light reflection surface S32. The light emitting element 321 and the optical element 322 of the rotating optical assembly 320 are rotated synchronously by the rotating assembly. Switching between the first state and the second state of the display panel is achieved by rotating the light emitting elements 321 and the optical elements 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 facing away from the first axis L.

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

The optical element 322 comprises a plane mirror. The first axis L is parallel to the light emitting surface S1 of the display panel, and the first axis L forms an included angle of 45 degrees with the plane mirror. When the optical element 322 is a reflective mirror, the light reflecting surface S32 is a mirror surface of the reflective 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 plane mirror forms an angle of 45 ° with the first axis L, light incident perpendicularly from the first display area a1 can be reflected by the plane mirror toward the photosensitive element 310 in a direction parallel to the plane of the display panel, which helps to further reduce 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 a physical rotation shaft structure may be disposed according to actual requirements, and an axis of the rotation shaft structure coincides with the first axis L.

Alternatively, the rotating assembly drives the light emitting element 321, the optical element 322 and the light sensing element 310 to rotate synchronously around the first axis L. Because the light-emitting element 321, the optical element 322 and the photosensitive element 310 rotate synchronously, no matter which angle the three rotate to, 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, and the under-screen imaging of the display device is realized.

In the first state, the light emitting element 321 is positioned between the display panel and the optical element 322; in the second state, the optical element 322 is positioned 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, and the display panel can emit light to display in both the first display area a1 and the second display area a 2. 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, 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 is emitted to the photosensitive element 310, so that the photosensitive element 310 can form an image by photosensitive. 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 another display device according to an embodiment of the present application. Fig. 7 is a schematic structural diagram of a light emitting device 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 a portion of the display panel 10; the first hole 330 is located in the first display area a1, and light emitted from the light emitting surface S31 of the rotating optical assembly 320 in the first state is incident on 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 include light emitting units 323 of three primary colors; the orthographic projection of the light-emitting element 321 on the light-emitting surface S1 along the thickness direction of the display panel 10 covers the orthographic projection of the first hole 330 on the light-emitting surface S1 along the thickness direction of the display panel 10. The first display area a1 has 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 incident 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 opened in the display panel 10, the display panel 10 cannot normally display at a position corresponding to the first hole 330. In the first state, the three primary color 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 emit light, and in cooperation with the second display area a2, the overall display of the display panel is not significantly affected by the opening of the first hole 330, i.e., full-screen display is achieved.

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 the 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 is the same as that 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, and at least a portion of the light shielding structure 340 is located on a sidewall of the first hole 330. When the display device is in the first state, the light emitting elements 321 emit light for displaying, and therefore the light emitted by the light emitting elements 321 may interfere with the display of the second display area a 2. By providing the light shielding structure 340, display interference of the light emitting element 321 with 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 also reduce the interference of the light emitted from the second display area a2 on the photosensitive imaging of the photosensitive element 310.

Optionally, with continued reference to fig. 6, the light shielding structure 340 includes an integral sidewall portion 341 and a bottom wall portion 342, the sidewall portion 341 at least partially covering the sidewall of the first aperture 330, the bottom wall portion 342 at least partially covering the backlight surface S2. The sidewall portion 341 is located at the sidewall of the first hole 330 and blocks light at the sidewall of the first hole 330. The bottom wall portion 342 can block light at the display panel backlight surface S2. The side wall portion 341 and the bottom wall portion 342 are integrally configured, and can block light at a connection portion between the side wall of the first hole 330 and the display panel backlight surface S2. The side wall portions 341 and the bottom wall portions 342 can improve the light shielding effect of the light shielding structure 340, and further reduce 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 sensing element 310.

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 emitting surface, and the liquid crystal module 120 is located at one side of the backlight emitting surface of the backlight module 110. Further, with reference to fig. 6, the first hole 330 penetrates through the backlight module, and the liquid crystal is located in the second display area a 2. Considering that the backlight module is an opaque module, the first hole 330 penetrates through 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 affects the function of the liquid crystal module, and therefore the first hole 330 only penetrates through the backlight module. In the liquid crystal module, the second display area a2 is filled with liquid crystal, and the first display area a1 is not filled with liquid crystal, so that the interference of the liquid crystal on the light entering the first display area a1 can be prevented, and the influence of the liquid crystal on the display luminescence of the light emitting element 321 can also be prevented.

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 another 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 both located on a side of the rear housing 410 facing the display panel, the rear housing 410 includes a second hole 411 penetrating through 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 in the first display area a 1. The rear case 410 is a rear protective case of the display device, and the light sensing element 310 and the rotating optical assembly 320 are located between the rear case 410 and the display panel. Light outside the display device rear case 410 can be emitted 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 emitted to the photosensitive element 310. Therefore, the photosensitive element 310 can be used for both front-end imaging and rear-end imaging of the 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 element 320 faces the display panel, and the light reflecting surface S32 faces the rear case 410. The luminous surface S31 is used for displaying and emitting light, and the full-screen display of the display device is realized. Meanwhile, the light entering through the second hole 411 is reflected and/or refracted by the light reflecting surface S32 and then emitted to the light sensing element 310, so as to implement the rear-mounted imaging of the display device. When the display device is in the second state, the rotating optical element 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 entering through the first hole 330 is reflected and/or refracted by the light reflecting surface S32 and then emitted to the light sensing element 310, so as to implement front-end camera shooting and imaging of the display device.

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

Fig. 10 is a schematic structural diagram of a display device according to an 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 on the light reflecting surface S32, and the light is reflected and/or refracted and exits from the second opening 328 and further irradiates on 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 deviates from the display panel, and the light entering from the light emitting surface S1 of the display panel cannot be shielded, so that full-screen display is realized. When the display device is in the second state, the display device needs to form an image under the screen, and the light entering from the light emitting surface S1 of the display panel is emitted from the first opening 327 to the optical element 322 and emitted from the second opening 328 to the photosensitive element 310, so as to form an image under the screen. The light emitting element 321 is also disposed on the first housing 325, and the rotating assembly drives the first housing 325 to rotate, so as to achieve synchronous rotation of the light emitting element 321 and the optical element 322.

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 rotates with respect to the second housing 329. When the rotating 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, when the first housing 325 rotates, the light can always be directed toward the photosensitive element 310 in the direction of the first axis L and used for an image formation under a screen as long as the light is reflected and/or refracted by the optical element 322.

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

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 exemplarily includes: substrate 210, array layer 220, light emitting functional layer 240, and encapsulation layer 270. The display layer is located on 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 a side of the light emitting function layer 240 facing away from the array layer 220. The light emitting function layer 240 includes a display light emitting device 248, and the display light emitting device 248 is located in the display region. The first display region a1 of the display panel is a region having a relatively high light transmittance. Light from one side of the light emitting surface S1 of the display panel can enter the first display area a1, and the light entering the first display area a1 can be used for off-screen imaging. The second display area a2 is the 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 light transmittance of the first display region a1 is greater than that of the second display region a2, the display effect of the first display region a1 is inferior to that of the second display region a 2.

Specifically, with continued reference to fig. 11, the portion of the substrate 210 located in the non-display area is transparent. The substrate 210 in the embodiment of the present application may also be a flexible substrate, and is formed of a polymer with a small thickness, such as polyimide. The substrate may further include a buffer layer, which may include a multi-layered inorganic and organic layer stack 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 detailed structures thereof are not described herein.

Specifically, with continued reference to fig. 11, the array layer 220 includes a plurality of Thin Film Transistors (TFTs) and pixel circuits formed of the TFTs for controlling the display light emitting devices 248. In the embodiments of the present application, a structure of a top gate thin film transistor will be described as an example. The array layer 220 includes an active layer for forming a thin film transistor, the active layer including source and drain regions formed by doping N-type impurity ions or P-type impurity ions, a channel region between the source and drain regions; 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 may be formed of an insulating inorganic layer of silicon oxide, silicon nitride, or the like, or alternatively, may be formed of an insulating organic layer. A source electrode and a drain electrode of the thin film transistor are located on the interlayer insulating layer. The source and drain electrodes are electrically connected (or coupled) 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 electrode and the drain electrode. The passivation layer may be formed of an inorganic layer of silicon oxide, 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), and the OLED light emitting device is described as an example below, 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, the 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 241, a pixel defining layer 246 covering the anode 241, an organic light-emitting layer 242, and a cathode 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 the pixel unit one, 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 the like, or SiN_xIs formed of the inorganic material of (1).

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 241. The pixel defining layer 246 covers the edge of the anode pattern. The organic light emitting layer 242 at least partially fills the pixel defining opening 247 and contacts the anode electrode 241. The organic light emitting layer 242 in 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 a plurality of pixel units display pictures.

With continued reference to fig. 11, the encapsulation layer 270 may be a thin film encapsulation layer located on a side of the light emitting functional layer 240 facing away from the array layer 220. The thin film encapsulation layer encapsulates the display layer, i.e., the peripheral edge of the thin film encapsulation layer contacts the array layer 220, sealing the light emitting part. Alternatively, the thin film encapsulation layer completely covers the entire display area and extends from the display area to the non-display area NA, where it contacts 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 on 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 subject approaches the cover 280, the subject can be imaged under the screen.

It is to be understood that the above structure of the OLED display panel is only one example, and the application does not limit 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 region a1 has good light transmittance. The light from the light emitting surface S1 side of the display panel can be emitted to the light reflecting surface S32 through the first hole 330 for under-screen imaging.

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 component faces the display panel, so that the rotating optical component emits light in the light-transmitting first display region for displaying, and the rotating optical component and the display panel together realize the display function of the display device; in the second state, the light reflecting surface of the rotating optical assembly faces the display panel, so that the light rays passing through the first display area a1 can be reflected or refracted by the rotating optical assembly to the photosensitive element, and the photosensitive element realizes the imaging function of the display device. The display device can have both shooting and displaying functions through switching between the first state and the second state.

While the invention has been described with reference to specific embodiments, the scope of the invention is not limited thereto, and those skilled in the art can easily conceive various equivalent modifications or substitutions within the technical 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 greater 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 on one side of the backlight surface of the display panel at an interval with the photosensitive element, the projection of the rotary optical component on the plane where the display panel is located is at least partially overlapped with the projection of the first display area on the plane where the display panel is located, the rotary optical component comprises a light emitting 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 rotating optical component faces the display panel in the first state, and the light reflecting surface of the rotating optical component faces the display panel in the second state.

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

the light emitting surface is located on the light emitting element, the light reflecting surface is located on the optical element, the light emitting element and the optical element are both connected with the rotating assembly, the rotating assembly drives the light emitting element and the optical element to synchronously rotate around a first axis, and the first axis penetrates through the light sensing surface.

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

4. The display device according to claim 2, wherein the optical element comprises a plane mirror;

the first axis is parallel to the plane where the display panel is located, and the first axis and the plane reflector 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, the first housing comprising a first accommodating cavity, a first opening and a second opening, the optical element being disposed in the first accommodating cavity, the second opening facing 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 toward the display panel.

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

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

8. The display device according to claim 1, wherein the display panel further comprises a first hole extending in a thickness direction of the display panel, the first hole passing through at least a part of the display panel; the first hole is positioned in the first display area, and light emitted from 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 includes a plurality of light emitting units including light emitting units of three primary colors; the orthographic projection of the light-emitting element on the light-emitting surface along the thickness direction of the display panel covers the orthographic projection of the first hole on the light-emitting surface along the thickness direction of the display panel.

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

10. The display device according to claim 9, wherein the light shielding structure comprises a sidewall portion and a bottom wall portion in one piece, the sidewall portion at least partially covering a sidewall of the first aperture, the bottom wall portion at least partially covering the backlight surface.

11. The display device according to claim 8, wherein the display panel is an organic light emitting diode display panel, and the first hole penetrates at least a part of the display panel.

12. The display device according to claim 8, wherein the display panel is a liquid crystal display panel, and the display panel comprises 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, and the rear housing includes a second hole penetrating through the rear housing, and an orthographic projection of the second hole on the light exit surface along 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 wherein the light emitting surface of the rotating optical assembly faces the rear housing in the second state.