CN110618559B - Display device and screen light supplementing method thereof - Google Patents

Display device and screen light supplementing method thereof Download PDF

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Publication number
CN110618559B
CN110618559B CN201910890961.7A CN201910890961A CN110618559B CN 110618559 B CN110618559 B CN 110618559B CN 201910890961 A CN201910890961 A CN 201910890961A CN 110618559 B CN110618559 B CN 110618559B
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display panel
light
display
screen
guide plate
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CN110618559A (en
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郑金山
杨在原
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Hisense Mobile Communications Technology Co Ltd
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Hisense Mobile Communications Technology Co Ltd
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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/13338—Input devices, e.g. touch panels
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/165—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on translational movement of particles in a fluid under the influence of an applied field
    • G02F1/166—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect
    • G02F1/167—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect by electrophoresis
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/165—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on translational movement of particles in a fluid under the influence of an applied field
    • G02F1/1675—Constructional details
    • G02F1/1677—Structural association of cells with optical devices, e.g. reflectors or illuminating devices
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B15/00—Special procedures for taking photographs; Apparatus therefor
    • G03B15/02—Illuminating scene
    • G03B15/03—Combinations of cameras with lighting apparatus; Flash units
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/50—OLEDs integrated with light modulating elements, e.g. with electrochromic elements, photochromic elements or liquid crystal elements
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/60—OLEDs integrated with inorganic light-sensitive elements, e.g. with inorganic solar cells or inorganic photodiodes
    • H10K59/65—OLEDs integrated with inorganic image sensors

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  • Nonlinear Science (AREA)
  • Chemical & Material Sciences (AREA)
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  • Optics & Photonics (AREA)
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Abstract

The invention discloses a display device and a screen light supplementing method thereof, wherein the display device comprises a first display panel and a second display panel which are arranged in a back-to-back manner; the first display panel includes: the first display module is positioned on one side, away from the second display panel, of the first light guide plate, and the first light source is positioned on the light incident surface of the first light guide plate; the first light source is turned on when the screen is used for supplementing light. The second display panel does not need to be provided with a camera element, and the screen occupation ratio is close to 100%. The image pickup element of the first display panel can be called to perform shooting in both the front shooting mode and the rear shooting mode. First display panel sets up first light source and first light guide plate in the light-emitting side of its display module assembly, opens first light source when the screen light filling needs to carry out, and the transmission of the emergent light of first light source is direct to the emergent of first display panel outside through the conduction of first light guide plate, avoids light filling light to reduce luminance through the rete of display module assembly, provides the screen light filling of hi-lite high homogeneity from this.

Description

Display device and screen light supplementing method thereof
Technical Field
The invention relates to the technical field of display, in particular to a display device and a screen light supplementing method thereof.
Background
The full screen is a broader definition of ultra-high screen than the design of the mobile phone in the mobile phone industry. The front of the display screen is all screens, the occupied size of the frame is reduced, and the screen occupation ratio is close to 100%. However, the current display devices such as the mobile terminal need to be provided with elements such as a camera and a light supplement lamp at the position of the frame, and a real comprehensive screen cannot be realized.
In order to reduce the space of the screen occupied by the camera element as much as possible, the current solution adopts a special-shaped screen, a hole is dug in the screen to be provided with a camera, or the camera is arranged below the screen, so that the screen is required to be adopted for light supplement when shooting is carried out. However, in the current stage, the light supplement of the screen is performed by using inherent light sources such as backlight of the display device, the light sources need to be emitted out through multiple film layers of the display device, the intensity of emitted light is not high, and the light supplement effect needs to be improved.
Disclosure of Invention
The invention provides a display device and a screen light supplementing method thereof, which are used for improving the screen light supplementing brightness.
In a first aspect, the present invention provides a display device comprising: the first display panel and the second display panel are arranged oppositely; the display surface of the first display panel is positioned on one side of the first display panel, which is far away from the second display panel, and the display surface of the second display panel is positioned on one side of the second display panel, which is far away from the first display panel;
wherein the first display panel includes: the first display module is positioned on one side, away from the second display panel, of the first light guide plate, and the first light source is positioned on the light incident surface of the first light guide plate;
the first light source is turned on when screen light supplement is carried out.
In a possible implementation manner, in the display device provided by the present invention, the first display panel further includes: and the first touch electrode layer is positioned on one side of the first light guide plate, which is deviated from the first display module.
In a possible implementation manner, in the display device provided by the present invention, the first display module includes: the liquid crystal display panel comprises a second light guide plate, a second light source, an optical diaphragm, a lower polarizer, an array substrate, an opposite substrate, a liquid crystal layer and an upper polarizer, wherein the second light source is positioned at the light inlet surface of the second light guide plate;
the light incident surface of the first light guide plate and the light incident surface of the second light guide plate are located on the same side of the first display panel.
In a possible implementation manner, in the display device provided by the present invention, the first display module includes: the display device comprises an array substrate, an organic light emitting diode device and a packaging element, wherein the organic light emitting diode device is positioned on one side, deviating from the second display panel, of the array substrate, and the packaging element is positioned on one side, deviating from the array substrate, of the organic light emitting diode device.
In a possible implementation manner, in the display device provided by the present invention, the first display module includes: the array substrate, the opposite substrate which is positioned on one side of the array substrate, which is far away from the second display panel, and a plurality of microcapsule structures which are positioned between the array substrate and the opposite substrate;
the microcapsule structure includes: a suspension, and charged particles dispersed in the suspension.
In one possible implementation manner, in the display device provided by the present invention, the second display panel includes: the second display module and a second touch electrode layer are positioned on one side, away from the first display panel, of the second display module.
In a possible implementation manner, in the display device provided by the invention, the second display module is one of a liquid crystal display module, an organic light emitting diode display module or an electrophoretic display module.
In a possible implementation manner, in the display device provided by the present invention, the screen occupation ratio of the second display panel is greater than or equal to the screen occupation ratio of the first display panel;
the first display panel includes: the image pickup device comprises a display area and a non-display area adjacent to the display area, wherein the image pickup element is positioned in the non-display area;
alternatively, the first and second electrodes may be,
the camera shooting element of the first display panel is positioned on one side of the first display module, which is deviated from the first light guide plate.
In a possible implementation manner, in the display device provided by the invention, the image pickup element comprises one or more cameras;
a plurality of one of the camera is wide angle camera.
In a second aspect, the present invention provides a method for supplementing light to a screen based on any one of the above display devices, including:
when the display device is switched to a rear-view mode, the image pickup element of the first display panel is used for shooting an object facing the first display panel, and the second display panel is used for displaying a preview picture; when the ambient photometric value is smaller than a preset value, starting the first light source to supplement light to the screen in the shooting process;
when the display device is switched to a forward shooting mode, the image pickup element of the first display panel is used for shooting an object facing the first display panel, and the first display panel is used for displaying a preview picture; and when the ambient photometric value is smaller than a preset value, starting the first light source at the shooting moment to perform screen light supplement.
The invention has the following beneficial effects:
the invention provides a display device and a screen light supplementing method thereof, comprising the following steps: the first display panel and the second display panel are arranged oppositely; the display surface of the first display panel is positioned on one side of the first display panel, which is far away from the second display panel, and the display surface of the second display panel is positioned on one side of the second display panel, which is far away from the first display panel; wherein the first display panel includes: the first display module is arranged on one side, away from the second display panel, of the first light guide plate, and the first light source is arranged on the light incident surface of the first light guide plate; the first light source is turned on when screen light supplement is carried out. According to the display device provided by the invention, the second display panel is not required to be provided with the image pickup element, and the image pickup element of the first display panel can be called to shoot in the front shooting mode and the back shooting mode, so that the screen occupation ratio of the second display panel is close to 100%. Simultaneously, first display panel sets up first light source and first light guide plate in the light-emitting side of its display module assembly, opens first light source when the screen light filling needs to be carried out, and the emergent light of first light source directly to the emergent of first display panel outside through the conduction of first light guide plate, avoids light filling light to reduce luminance through the rete of display module assembly, provides the screen light filling of hi-lite high uniformity from this.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic cross-sectional view of a display device according to an embodiment of the invention;
FIG. 2 is a diagram illustrating an effect of the display apparatus in the back-up mode according to an embodiment of the present invention;
FIG. 3 is a diagram illustrating an effect of the display apparatus in the proactive mode according to an embodiment of the present invention;
fig. 4 is a second schematic cross-sectional view illustrating a display device according to an embodiment of the invention;
fig. 5 is a third schematic cross-sectional view illustrating a display device according to an embodiment of the invention;
fig. 6 is a fourth schematic cross-sectional view of a display device according to an embodiment of the present invention;
FIG. 7 is a fifth schematic cross-sectional view of a display device according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a first display panel according to an embodiment of the present invention;
fig. 9 is a second schematic structural diagram of the first display panel according to the embodiment of the invention;
fig. 10 is a third schematic structural diagram of the first display panel according to the embodiment of the invention;
fig. 11 is a flowchart of a method for supplementing light to a screen of a display device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
At the present stage, the mobile terminal is moved to achieve the largest screen occupation ratio, a scheme of a special-shaped screen is usually adopted to avoid the arrangement position of the camera element, and for example, the modes of a Notch screen, a water drop screen, a hole digging screen and the like can be adopted; however, the display screen still cannot achieve 100% screen ratio. This in turn has proposed solutions for pop-up front-up and off-screen cameras. Although the pop-up type telephoto lens can improve the screen occupation ratio, the arrangement structure is relatively complicated, and the front-facing camera and the pop-up structure are easily damaged. According to the scheme of the camera under the screen, the camera is arranged at the bottom of the display element, so that light collection is limited, and the imaging effect is poor.
The mobile terminal can carry out the light filling operation to shooing the object when the ambient light intensity is less strong under the mode of making a video recording in the front, because the requirement of high screen proportion, the mobile terminal of present stage can not set up the light source that is used for the light filling specially on the screen, but directly adopts the luminous of screen directly to carry out the screen light filling. When the backlight or the self-luminous screen of the screen is adopted for light supplement, light needs to be emitted outwards through a plurality of film layers of the screen, the brightness of emergent light can be greatly reduced, and the light supplement effect is poor.
In view of this, the embodiment of the present invention provides a display device, as shown in fig. 1, the display device provided by the embodiment of the present invention includes: a first display panel 100 and a second display panel 200 disposed opposite to each other; the display surface s1 of the first display panel 100 is located on a side of the first display panel 100 facing away from the second display panel 200, and the display surface s2 of the second display panel 200 is located on a side of the second display panel 200 facing away from the first display panel 100.
Wherein the first display panel 100 includes: the camera element c, the first display module 11, the first light guide plate 12 located on one side of the first display module 11 departing from the second display panel 200, and the first light source 13 located on the light incident surface of the first light guide plate 12. The first light source 13 is turned on when the screen is supplemented with light.
The display device provided by the embodiment of the invention comprises two display panels, wherein the two display panels are arranged back to back, and both the two display panels can be used for image display. Among them, the first display panel 100 may include an image pickup element c, which is applicable to both the back-up mode and the front-up mode. Thus, the second display panel 200 may not be provided with an image pickup element, and the second display panel 200 may be set to a higher screen ratio, realizing a true full screen of 100% screen ratio.
The second display panel 200 can be used as a main display, the first display panel 100 can be used as a back display, and both of the displays can be used for displaying images. When the display apparatus is in the rear-view mode, the image pickup element c of the first display panel 100 faces the subject, and the display surface of the second display panel 200 faces the user, the second display panel 200 can be used to display a preview screen. When the display apparatus is in the forward-shooting mode, the image pickup element c of the first display panel 100 faces the subject, and the display surface of the first display panel 100 faces the user, and the first display panel 100 can be used to display a preview screen.
In the display device provided in the embodiment of the present invention, the first display panel 100 further includes: the first display module 11 is disposed on the first light guide plate 12 on a side of the first display module 11 departing from the second display panel 200, and the first light source 13 is disposed on the light incident surface of the first light guide plate 12. Set up the first light guide plate 12 and the first light source 13 that are used for the screen light filling specially in the light-emitting side of first display module assembly 11, like this, can not pass through the rete or the part of first display module assembly 11 again by the light of first light guide plate 12 outgoing, and directly to the shooting object outgoing in the first display panel 100 outside, improve the luminance of screen light filling from this by a wide margin, the light-emitting is more even, promotes the effect of screen light filling.
Specific application scene effect diagrams of the display device provided by the embodiment of the invention are shown in fig. 2 and fig. 3. As shown in fig. 2, when the display device is in the post-shooting mode, a user views a preview picture through the second display panel 200, when the ambient light intensity is weak, the first light source 13 of the first display panel 100 may be turned on, light of the first light source 13 is transmitted through the first light guide plate 12 and finally emitted to the outside of the first display panel 100, and the light emitted from the first light guide plate 12 illuminates a shot object, so as to achieve the effect of screen light supplement, so that the camera element c can collect enough light in the shooting process, and the light supplement can be performed on the shot object in the post-shooting mode.
As shown in fig. 3, when the display apparatus is in the forward mode, a user can preview a picture through the first display panel 100, and at this time, the first display panel 100 is used for displaying a preview picture and supplementing light to the screen, so that the first light source 13 of the first display panel 100 is turned on only at the moment of shooting, and is turned off at other times, and when the first light source 13 is turned off, the first display panel 100 can display the preview picture on the display surface.
In specific implementation, the first display panel 100 and the second display panel 200 provided by the embodiment of the invention may be both touch display panels. As shown in fig. 4, the first display panel 100 further includes: and the first touch electrode layer 14 is positioned on one side of the first light guide plate 12, which is far away from the first display module 11. The second display panel 200 includes: a second display module 21, and a second touch electrode layer 22 located on a side of the second display module 21 away from the first display panel 100. In the display device provided in the embodiment of the present invention, the first display panel 100 and the second display panel 200 both have touch functions, and the touch electrode layer 22 is located at the outermost side of the display panels, which is beneficial to sensing the touch operation of a user finger or a touch element. In practical applications, the touch electrode layer 22 may include a plurality of touch electrodes independent of each other, and each touch electrode is connected to the display device main board through a wire, and the touch position may be determined by detecting a capacitance value generated between the touch electrode and the ground, where the touch electrode structure is a self-capacitance type touch electrode structure. In addition, the touch electrode layer 22 may further include a first electrode and a second electrode that are arranged in a crossing manner, the first electrode and the second electrode are insulated from each other, the first electrode and the second electrode form a plurality of overlapping structures in the display surface area, coupling capacitances are formed at the overlapping positions, and the position of the touch point can be determined by detecting a change in the coupling capacitance between the first electrode and the second electrode. The first electrode and the second electrode can be a touch driving electrode and a touch sensing electrode respectively, and the touch electrode structure is a mutual capacitance type touch electrode structure.
The first display panel provided by the embodiment of the invention can adopt different types of display modules. In an implementation manner, as shown in fig. 5, the first display module 11 may include: a second light guide plate 111, a second light source 112 located at the light incident surface of the second light guide plate 111, an optical film 113 located at the light emergent surface of the second light guide plate 111, a lower polarizer 114 located at a side of the optical film 113 away from the second light guide plate 111, an array substrate 115 located at a side of the lower polarizer 114 away from the optical film 113, an opposite substrate 116 located at a side of the array substrate 115 away from the lower polarizer 114, a liquid crystal layer 117 located between the array substrate 115 and the opposite substrate 116, and an upper polarizer 118 located at a side of the opposite substrate 116 away from the liquid crystal layer 117; as shown in fig. 5, the light incident surface of the first light guide plate 12 and the light incident surface of the second light guide plate 111 are located on the same side of the first display panel 100.
The first display module 11 provided in the embodiment of the present invention may adopt a liquid crystal display module, which belongs to a transmissive display module and needs to be used in cooperation with a backlight. The embodiment of the invention adopts a side-in type backlight structure, which includes a second light guide plate 111 and a second light source 112 located at the light incident surface of the second light guide plate 111. The thickness of the side-in type backlight structure is small, and the whole thickness of the liquid crystal display module is favorably thinned. The backlight module further comprises: the optical film 113 is located on the light-emitting surface of the second light guide plate 111, and the optical film 113 is used for optimizing the light-emitting effect of the backlight, and may generally include a diffusion sheet, a brightness enhancement sheet, and other structures, and a reflection sheet may be further disposed on a side of the second light guide plate 111 away from the light-emitting surface, and is used for reflecting the light emitted from the second light guide plate 111 to one side of the optical film 113, so as to improve the light utilization rate. The liquid crystal display module includes: the array substrate 115 and the opposite substrate 116 are oppositely arranged, wherein the array substrate 115 may be a glass substrate, and a circuit and an active device (such as a thin film transistor) are manufactured on the glass substrate by using a thin film process, and the active device of the array substrate is finally connected to the pixel electrode; the opposite substrate 116 may be provided with a color film layer, and a lower polarizer 114 and an upper polarizer 118 are required to be disposed on the outer sides of the array substrate 115 and the opposite substrate 116, and the polarization direction of the lower polarizer 114 is perpendicular to the polarization direction of the upper polarizer 118. By controlling the signal applied to the pixel electrode, the turnover degree of liquid crystal molecules in the liquid crystal layer corresponding to the pixel electrode can be correspondingly controlled, so that the light transmission efficiency of the pixel is controlled, and the purpose of displaying is achieved. As shown in fig. 5, the backlight needs to pass through the second light guide plate 111, the optical film 113, the lower polarizer 114, the array substrate 115, the liquid crystal layer 117, the opposite substrate 116, and the upper polarizer 118 before exiting, and the brightness of the exiting light is greatly reduced. In the embodiment of the invention, the first light guide plate 12 and the first light source 13 are arranged on one side of the upper polarizer 118 departing from the opposite substrate 117, and the first light source 13 is turned on when light supplement is needed, so that light rays are emitted to the outer side of the display device without passing through a film layer in the first display module, and the light supplement intensity can be greatly improved. Since the light sources at the light incident surface of the light guide plate occupy a certain frame area, in order to reduce the space occupied by the light sources, the light incident surface of the first light guide plate 12 and the light incident surface of the second light guide plate 111 are disposed at the same side of the first display panel 100, and at this time, the first light source 13 and the second light source 112 are disposed at the same side of the first display panel 100.
In another implementation manner, as shown in fig. 6, the first display module 11 may include: an array substrate 11a, an organic light emitting diode device 11b on the array substrate 11a on a side facing away from the second display panel 200, and a package element 11c on the organic light emitting diode device 11b on a side facing away from the array substrate 11 a.
The first display module 11 provided in the embodiment of the invention may adopt an Organic Light-Emitting Diode (OLED) display module, and the OLED display module is a self-luminous display module, so that a backlight module is not required to be arranged, and the thickness of the display device can be reduced. The OLED display module may be driven in an active driving manner, and specifically may include a substrate, a driving circuit formed on the substrate, and a pixel circuit corresponding to each pixel unit and connected to an anode of the OLED device, and change the light emitting luminance of each pixel unit by controlling a signal applied to the anode of the pixel unit. Generally, the OLED device is further provided with an encapsulating element 11c, which may be a thin film encapsulating layer or an encapsulating cover plate, and the specific encapsulating form may be selected according to actual needs, which is not limited herein. Because the luminance of the OLED device is limited, the luminance of the screen supplementary lighting performed by only adopting the OLED device is limited. According to the embodiment of the invention, the first light guide plate 12 and the first light source 13 are arranged on the side, away from the OLED device 11b, of the packaging element 11c, and the first light source 13 is turned on when light supplement is needed, so that high-brightness and good-uniformity screen light supplement can be provided for a shot object, and the problem of low light supplement brightness is solved.
In another implementation manner, as shown in fig. 7, the first display module 11 may include: an array substrate 11A, an opposite substrate 11B located on a side of the array substrate 11A away from the second display panel 200, and a microcapsule structure 11C located between the array substrate 11A and the opposite substrate 11B; wherein the microcapsule structure 11C includes: suspension 11C1, and charged particles 11C2 dispersed in suspension 11C 1.
The first display module 11 provided in the embodiment of the present invention may adopt an electrophoretic display module, and the electrophoretic display technology may continuously display the current picture without power, and only when the picture changes, a small amount of power is consumed. This feature will greatly reduce power consumption with a longer endurance. Specifically, the array substrate may adopt a substrate, and a circuit and an active device (such as a thin film transistor) are prepared on the substrate, and the active device is connected to pixel electrodes corresponding to the microcapsule structure one to one, and the voltage at two sides of the microcapsule structure is controlled by controlling an electrical signal on the pixel electrodes, so that charged particles in the microcapsule structure float up and down under the action of an electric field, thereby forming a display picture. Because the charged particles in the electrophoretic display technology generally have colors and are displayed by utilizing the reflection of ambient light, the electrophoretic display module does not emit light and cannot play a role in supplementing light to a screen. In the embodiment of the invention, the first light guide plate 12 and the first light source 13 are arranged on the side of the opposite substrate 11B away from the array substrate 11A, and the first light source 13 is turned on when light supplement is needed, so that high-brightness and better-uniformity screen light supplement can be provided for a shot object.
In an implementation, the second display module 21 may be one of a liquid crystal display module, an organic light emitting diode display module, or an electrophoretic display module. The specific structure is similar to that of the first display module 11, and is not described herein again.
Since the second display panel 200 can be set to a true full screen, and the first display panel 100 needs to be further provided with the image pickup element c, the screen duty ratio of the second display panel 200 can be greater than or equal to that of the first display panel 100.
Specifically, as shown in fig. 8, the first display panel 100 may include: a display area AA and a non-display area VA adjacent to the display area AA, the image pickup element c being located in the non-display area VA. As shown in fig. 8, the non-display area VA may be located on an upper side of the display area AA, and the image pickup device c is located in the non-display area VA, in this case, in order to increase the screen ratio of the first display panel 100, the first display panel 100 may adopt a special-shaped screen structure, such as a Notch screen or a water drop screen (as shown in fig. 8). In order to further improve the screen ratio of the first display panel 100, the first display panel 100 may also reach a screen ratio close to 100%, as shown in fig. 9, the image pickup element c may be disposed on the pop-up device, or as shown in fig. 10, the image pickup element c is disposed on a side of the first display module 11 away from the first light guide plate 12, that is, the image pickup element c is disposed below the first display module. In practical applications, any one of the above display panel structures may be selected according to requirements, and is not limited herein.
In the display device provided in the embodiment of the present invention, the image pickup element c may include one or more cameras; when the image pickup element c includes only one camera, the camera is activated for shooting in both the back-shooting mode and the front-shooting mode. When the image pickup element c includes two cameras, one of the cameras may be a wide-angle camera. In the forward-looking mode, which is an application scene generally related to self-timer shooting, since the user or the object is close to the image pickup element c, the wide-angle camera may be activated in the forward-looking mode to perform shooting in order to enlarge the shooting field. Of course, in other application scenarios, one or more cameras are turned on as needed to achieve a larger depth of field or a better shooting effect, and the embodiments of the present invention are not limited to these situations.
On the other hand, an embodiment of the present invention further provides a screen light supplement method based on any one of the display devices, as shown in fig. 11, the screen light supplement method may include:
s10, determining the shooting mode of the display device; when the display device is switched to the rear view mode, step S20 is executed, and when the display device is switched to the front view mode, step S30 is executed;
s20, the image pickup element of the first display panel is used for shooting the object facing the first display panel, and the second display panel is used for displaying the preview picture; when the ambient photometric value is smaller than a preset value, a first light source is started to supplement light to a screen in the shooting process;
s30, the image pickup element of the first display panel is used for shooting the object facing the first display panel, and the first display panel is used for displaying the preview picture; and when the ambient photometric value is smaller than the preset value, starting a first light source at the shooting moment to supplement light to the screen.
Specific application scene effect diagrams of the screen light supplement method provided by the embodiment of the invention are shown in fig. 2 and fig. 3. As shown in fig. 2, when the display device is in the post-shooting mode, the user views the preview image through the second display panel 200, when the ambient light intensity is weak (the ambient photometric value is less than the preset value), the first light source 13 of the first display panel 100 can be turned on, light of the first light source 13 is transmitted through the first light guide plate 12 and finally emitted to the outside of the first display panel 100, the light emitted from the first light guide plate 12 illuminates the object to be shot, so that the effect of screen light supplement is achieved, the sufficient light can be collected by the camera element c during shooting, and the light can be supplemented to the object to be shot even in the post-shooting mode.
As shown in fig. 3, when the display apparatus is in the forward mode, a user can preview a picture through the first display panel 100, and at this time, the first display panel 100 is used for displaying a preview picture and supplementing light to the screen, so that the first light source 13 of the first display panel 100 is turned on only at the moment of shooting, and is turned off at other times, and when the first light source 13 is turned off, the first display panel 100 can display the preview picture on the display surface.
The screen light supplement method provided by the embodiment of the invention can provide a screen light supplement effect with high brightness and good uniformity, and meanwhile, the second display panel does not need to be provided with a camera element, so that the screen occupation ratio is close to 100%.
In a specific implementation, the image pickup element may include a plurality of cameras, and one of the plurality of cameras is a wide-angle camera;
when the display device is switched to the forward shooting mode, the first display panel starts the wide-angle camera to shoot an object facing the first display panel.
In the forward mode, generally, in an application scenario related to self-timer shooting, since a user or a shot object is close to an image pickup element, in order to enlarge a shooting field of view and optimize a shooting effect, a wide-angle camera can be started to shoot in the forward mode.
The display device and the screen light supplement method thereof provided by the embodiment of the invention comprise the following steps: the first display panel and the second display panel are arranged oppositely; the display surface of the first display panel is positioned on one side of the first display panel, which is far away from the second display panel, and the display surface of the second display panel is positioned on one side of the second display panel, which is far away from the first display panel; wherein the first display panel includes: the first display module is arranged on one side, away from the second display panel, of the first light guide plate, and the first light source is arranged on the light incident surface of the first light guide plate; the first light source is turned on when screen light supplement is carried out. According to the display device provided by the invention, the second display panel is not required to be provided with the image pickup element, and the image pickup element of the first display panel can be called to carry out shooting in the forward shooting mode and the backward shooting mode, so that the screen occupation ratio of the second display panel is close to 100%. Simultaneously, first display panel sets up first light source and first light guide plate in the light-emitting side of its display module assembly, opens first light source when the screen light filling needs to be carried out, and the emergent light of first light source directly to the emergent of first display panel outside through the conduction of first light guide plate, avoids the rete of light filling light through display module assembly to reduce luminance, provides the screen light filling of high brightness high uniformity from this.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (10)

1. A display device, comprising: the first display panel and the second display panel are arranged oppositely; the display surface of the first display panel is positioned on one side, away from the second display panel, of the first display panel, and the display surface of the second display panel is positioned on one side, away from the first display panel, of the second display panel;
wherein the first display panel includes: the first display module is positioned on one side, away from the second display panel, of the first light guide plate, and the first light source is positioned on the light incident surface of the first light guide plate;
the first light source is started when screen light supplement is carried out; when the display device is in a back-shooting mode, the image pickup element of the first display panel is used for shooting an object facing the first display panel, and the second display panel is used for displaying a preview picture; when the ambient photometric value is smaller than a preset value, starting the first light source to supplement light to the screen in the shooting process; when the display device is in a forward shooting mode, the camera element of the first display panel is used for shooting an object facing the first display panel, and the first display panel is used for displaying a preview picture; when the ambient photometric value is smaller than a preset value, starting the first light source at the shooting moment to supplement light to the screen;
and when screen light supplement is carried out, the first light source is started, and light rays of the first light source are transmitted to the outer side of the first display panel through the conduction of the first light guide plate.
2. The display device according to claim 1, wherein the first display panel further comprises: and the first touch electrode layer is positioned on one side of the first light guide plate, which deviates from the first display module.
3. The display device according to claim 1, wherein the first display module comprises: the liquid crystal display panel comprises a second light guide plate, a second light source, an optical diaphragm, a lower polarizer, an array substrate, an opposite substrate, a liquid crystal layer and an upper polarizer, wherein the second light source is positioned at the light inlet surface of the second light guide plate;
the light incident surface of the first light guide plate and the light incident surface of the second light guide plate are located on the same side of the first display panel.
4. The display device according to claim 1, wherein the first display module comprises: the display device comprises an array substrate, an organic light emitting diode device and a packaging element, wherein the organic light emitting diode device is positioned on one side, deviating from the second display panel, of the array substrate, and the packaging element is positioned on one side, deviating from the array substrate, of the organic light emitting diode device.
5. The display device according to claim 1, wherein the first display module comprises: the array substrate, the opposite substrate is positioned on one side of the array substrate, which is far away from the second display panel, and the microcapsule structures are positioned between the array substrate and the opposite substrate;
the microcapsule structure includes: a suspension, and charged particles dispersed in the suspension.
6. The display device according to any one of claims 1 to 5, wherein the second display panel includes: the second display module and a second touch electrode layer are positioned on one side, away from the first display panel, of the second display module.
7. The display device as claimed in claim 6, wherein the second display module is one of a liquid crystal display module, an organic light emitting diode display module or an electrophoretic display module.
8. The display device according to any one of claims 1 to 5, wherein a screen duty ratio of the second display panel is greater than or equal to a screen duty ratio of the first display panel;
the first display panel includes: the image pickup device comprises a display area and a non-display area adjacent to the display area, wherein the image pickup element is positioned in the non-display area;
alternatively, the first and second electrodes may be,
the camera shooting element of the first display panel is positioned on one side of the first display module, which is deviated from the first light guide plate.
9. The display device of any one of claims 1-5, wherein the camera element comprises one or more cameras;
a plurality of one of the camera is wide angle camera.
10. A method for supplementing light to a screen based on the display device according to any one of claims 1 to 9, comprising:
when the display device is switched to a rear-view mode, the image pickup element of the first display panel is used for shooting an object facing the first display panel, and the second display panel is used for displaying a preview picture; when the ambient photometric value is smaller than a preset value, starting the first light source to supplement light to the screen in the shooting process;
when the display device is switched to a forward-shooting mode, the image pickup element of the first display panel is used for shooting an object facing the first display panel, and the first display panel is used for displaying a preview picture; when the ambient photometric value is smaller than a preset value, starting the first light source at the shooting moment to perform screen light supplement;
when screen light supplement is carried out, the first light source is started, and light rays of the first light source are transmitted to the outer side of the first display panel through the first light guide plate.
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