CN113885248A - Display device and control method thereof - Google Patents
Display device and control method thereof Download PDFInfo
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- CN113885248A CN113885248A CN202111122122.4A CN202111122122A CN113885248A CN 113885248 A CN113885248 A CN 113885248A CN 202111122122 A CN202111122122 A CN 202111122122A CN 113885248 A CN113885248 A CN 113885248A
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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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133553—Reflecting elements
- G02F1/133555—Transflectors
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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
- G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
-
- 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
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133512—Light shielding layers, e.g. black matrix
-
- 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
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- Mathematical Physics (AREA)
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- Optics & Photonics (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The embodiment of the invention discloses a display device and a control method thereof. The display device comprises a display screen, a photosensitive component, an optical element and a light guide structure; wherein the optical element is positioned on the display side of the display screen; along the direction vertical to the display surface of the display screen, part or all of the projection of the optical element on the plane of the display surface of the display screen is positioned in the display area of the display screen; the optical element is used for being in a transmission state when the display screen displays, or is vertically arranged relative to the display surface of the display screen; when the photosensitive component works, the photosensitive component is obliquely arranged relative to the display surface of the display screen and is in a reflection state, so that the ambient light is reflected to the light guide structure through the optical element, and then is guided to the photosensitive component. The technical scheme provided by the embodiment of the invention can realize the dual functions of the under-screen camera and the extremely comprehensive screen ratio.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display device and a control method thereof.
Background
With the rapid development of display devices such as mobile phones, people are pursuing extremely high screen occupation ratio, the screen is from the bang screen to the water droplet screen and then to the camera under the screen, for example, a camera hole is left on the screen by adopting a laser drilling mode, or the camera is shot under the screen by increasing the transparent screen, and the defects that the luminous intensity and the uniformity of the effect of the non-transparent screen and the transparent screen are not well adjusted, the display effect of the connected position is not good, the reliability of the screen is lower, the service life is limited and the like exist.
Disclosure of Invention
The embodiment of the invention provides a display device and a control method thereof, which are used for realizing dual functions of an under-screen camera and extremely comprehensive screen ratio.
In a first aspect, an embodiment of the present invention provides a display device, including: the display screen, the photosensitive component, the optical element and the light guide structure;
wherein the optical element is positioned on the display side of the display screen; along the direction vertical to the display surface of the display screen, part or all of the projection of the optical element on the plane of the display surface of the display screen is positioned in the display area of the display screen; the optical element is used for being in a transmission state when the display screen displays, or is vertically arranged relative to the display surface of the display screen; when the photosensitive component works, the display surface is obliquely arranged relative to the display screen and is in a reflection state, so that ambient light is reflected to the light guide structure through the optical element, and then the ambient light is guided to the photosensitive component, so that the screen occupation ratio is improved, and the image pickup under the screen is realized.
In an alternative embodiment, the optical element is a transflective switchable optical element, and the transflective switchable optical element is configured to be in a transmissive state when displayed on the display screen. The working state of the optical element can be switched by switching transmission and reflection, so that double functions of full-screen display and under-screen image pickup are realized.
In an alternative embodiment, the optical element is a first reflective element, and the first reflective element is configured to be vertically disposed with respect to a display surface of the display screen when the display screen is displaying. The position of the first reflecting element relative to the display screen can be changed to realize the double functions of full-screen display and under-screen image pickup.
In an alternative embodiment, the display device further comprises: the transmission connecting mechanism and the rotary driving mechanism; the rotary driving mechanism is connected with the optical element through the transmission connecting mechanism and is used for driving the optical element to rotate through the transmission connecting mechanism.
In an optional embodiment, the display device includes a display area and a light shielding area surrounding the display area, the display area of the display device is disposed corresponding to the display area of the display screen, at least one end of the optical element extends to an edge of the display area of the display device, and the connection end of the transmission connection mechanism and the optical element is located in the light shielding area; the shading area of the display device is provided with a shading layer.
In an optional embodiment, the light guide structure includes a second reflective element, the second reflective element is located in the light-shielding region, and the second reflective element is disposed to be inclined with respect to a plane where the display surface of the display screen is located.
In an optional embodiment, the light guiding structure further includes a third reflecting element, where the third reflecting element is configured to reflect the light reflected by the second reflecting element to the light sensing component, the light sensing component is located on a side of the display screen other than the display surface, and a light entering direction of the light sensing component is parallel to the display surface of the display screen.
In an optional embodiment, the display device further includes a cover structure, the display screen and the photosensitive member are located on the same side of the cover structure, and the optical element is located in the cover structure;
the cover plate structure comprises a first cover plate and a second cover plate which are opposite to each other in the thickness direction of the display screen and are arranged at intervals, and the optical element is located between the first cover plate and the second cover plate.
In a second aspect, an embodiment of the present invention further provides a method for controlling a display device according to any embodiment of the present invention, where the method includes:
when the display screen displays, the optical element is in a transmission state, or is vertically arranged relative to the display surface of the display screen;
when the photosensitive component works, the optical element is obliquely arranged relative to the display surface of the display screen and is in a reflection state, so that the ambient light is reflected to the light guide structure through the optical element and then is guided to the photosensitive component.
In an alternative embodiment, the display screen and the photosensitive member operate in time division.
In the technical scheme of the embodiment of the invention, the display device comprises a display screen, a photosensitive component, an optical element and a light guide structure; the optical element is positioned on the display side of the display screen, and the projection of the optical element on the plane of the display surface of the display screen is partially or completely positioned in the display area of the display screen along the direction vertical to the display surface of the display screen; the optical element is used for being in a transmission state when the display screen displays, or is vertically arranged relative to the display surface of the display screen; when the photosensitive component works, the photosensitive component is obliquely arranged relative to the display surface of the display screen and is in a reflection state, so that ambient light is reflected to the light guide structure through the optical element, and then the ambient light is guided to the photosensitive component, so that the screen occupation ratio is improved, and the image pickup under the screen is realized.
Drawings
Fig. 1 is a schematic cross-sectional view of a display device according to an embodiment of the invention;
fig. 2 is a schematic optical path diagram of a display device according to an embodiment of the present invention when displaying on a display screen;
fig. 3 is a schematic diagram of an optical path of a display device provided by an embodiment of the present invention when a photosensitive member is in operation;
FIG. 4 is a schematic side view of a display device according to another embodiment of the present invention;
fig. 5 is a schematic optical path diagram of another display device according to an embodiment of the present invention when displaying on a display screen;
fig. 6 is a schematic diagram of an optical path of another display device provided by an embodiment of the present invention when a photosensitive member is in operation;
FIG. 7 is a schematic side view, cross-sectional structure diagram of a display device according to an embodiment of the invention;
fig. 8 is a schematic top view illustrating a display device according to another embodiment of the present invention;
fig. 9 is a schematic cross-sectional view of a first reflective element according to an embodiment of the present invention;
FIG. 10 is a schematic cross-sectional view of a transflective switchable optical element in a transmissive state according to an embodiment of the present invention;
FIG. 11 is a cross-sectional view of a transflective switchable optical element in a reflective state according to an embodiment of the present invention;
fig. 12 is a flowchart illustrating a control method of a display device according to an embodiment of the present invention;
fig. 13 is a flowchart of a control method of a display device according to another embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
The embodiment of the invention provides a display device. Fig. 1 is a schematic cross-sectional view of a display device according to an embodiment of the invention. Fig. 2 is a schematic view of an optical path of a display device according to an embodiment of the present invention when displaying on a display screen. Fig. 3 is a schematic diagram of an optical path of a display device provided by an embodiment of the present invention when a photosensitive member is in operation. The display device includes: a display screen 10, a photosensitive member 20, an optical element 30, and a light guide structure 40.
Wherein the optical element 30 is located at the display side of the display screen 10; in a direction perpendicular to the display surface of the display screen 10, a part or all of the projection of the optical element 30 on the plane of the display surface of the display screen 10 is located in the display area of the display screen 10, and the optical element 30 is used for displaying on the display screen 10 and is vertically arranged relative to the display surface of the display screen 10; when the photosensitive member 20 is operated, it is disposed obliquely with respect to the display surface of the display screen 10 and in a reflective state, so that ambient light is reflected to the light guide structure 40 via the optical element 30, thereby guiding the ambient light to the photosensitive member 20.
The display device may include a mobile phone, a tablet computer, a notebook computer, a wearable device, and the like. The display screen 10 may include an organic light emitting diode display screen or a liquid crystal display screen, etc. The display screen 10 may be a full-face screen. The photosensitive member 20 may include a camera or the like. Optionally, the optical element 30 is a first reflective element 31, and the first reflective element 31 is configured to be vertically disposed with respect to a display surface of the display screen 10 when the display screen 10 displays. The light guiding structure 40 may include a mirror plate, etc.
The display screen 10 and the photosensitive member 20 may operate in time division without operating at the same time. When the display screen 10 displays, the optical element 30 can be perpendicular to the display surface of the display screen 10, at this time, the reflection surface of the optical element 30 can be perpendicular to the display surface of the display screen 10, so as to avoid that when the display screen displays, the optical element shields the light emitted by the display screen, and the display effect is influenced, thereby realizing the full screen display of the display screen, solving the problems that in the prior art, the display area of the transparent screen is uneven in display brightness with the surrounding display area thereof due to the fact that holes are dug on the display screen or the transparent screen opposite to the camera is arranged, and the like, ensuring the integrity of the display screen through the arrangement of the optical element and the light guide structure, simultaneously ensuring the brightness uniformity of the display area of the display screen, and reducing chromatic aberration. When the photosensitive member 20 operates, the optical element 30 is disposed obliquely to the display surface of the display screen 10, at this time, the light-reflecting surface of the optical element 30 is disposed obliquely to the display surface of the display screen 10, an included angle θ between the optical element 30 and the display surface of the display screen 10 is greater than zero degrees, and an included angle θ between the optical element 30 and the display surface of the display screen 10 is not equal to 90 degrees, for example, the included angle θ between the optical element 30 and the display surface of the display screen 10 may be 45 degrees, and the optical element 30 is in a reflective state, so that ambient light is reflected to the light guide structure 40 by the optical element 30, and further the ambient light is guided to the photosensitive member 20, so that a scene in front of the display screen passes through a reflection light path, and is collected by a photosensitive member, such as a camera module, located on a non-display surface of the display screen, so as to implement image capture under the screen. In the embodiment, the display surface of the display panel is a surface of the display panel on which a screen is displayed, and the non-display surface of the display panel is a surface of the display panel opposite to the display surface, that is, a back surface of the display panel.
In the technical solution of this embodiment, the display device includes a display screen, a photosensitive member, an optical element, and a light guide structure; the optical element is positioned on the display side of the display screen, and along the direction perpendicular to the display surface of the display screen, part or all of the projection of the optical element on the plane where the display surface of the display screen is positioned in the display area of the display screen; when the photosensitive component works, the photosensitive component is obliquely arranged relative to the display surface of the display screen and is in a reflection state, so that ambient light is reflected to the light guide structure through the optical element, and then the ambient light is guided to the photosensitive component, so that the screen occupation ratio is improved, and the image pickup under the screen is realized.
The embodiment of the invention provides a display device. Fig. 4 is a schematic side-view cross-sectional structure diagram of another display device according to an embodiment of the invention. Fig. 5 is a schematic optical path diagram of another display device according to an embodiment of the present invention when displaying on a display screen. Fig. 6 is a schematic diagram of an optical path of another display device provided by an embodiment of the present invention when a photosensitive member is in operation. On the basis of the above embodiment, the optical element 30 is used to be in a transmissive state when displayed on the display screen 10.
Wherein the optical element 30 is switchable between a transmissive state and a reflective state. Optionally, the optical element 30 is a transflective switchable optical element 32, and the transflective switchable optical element 32 is configured to be in a transmissive state when displayed on the display screen 10. The position of the transflective optical element 32 may be fixed, the angle θ between the optical element 30 and the display surface of the display screen 10 may be kept constant, the angle θ between the optical element 30 and the display surface of the display screen 10 is greater than zero degrees, and the angle θ between the optical element 30 and the display surface of the display screen 10 is not equal to 90 degrees. The position of the transflective switchable optical element 32 may be varied, for example, when the display screen 10 is displaying, the transflective switchable optical element 32 is disposed parallel to the display surface of the display screen 10.
When the display screen 10 shows, optical element 30 can be the transmission state, the light that the display screen 10 sent can directly see through optical element 30, in order to avoid when the display screen shows, optical element shelters from the light that the display screen sent, influence the display effect, thereby can realize the full-screen display of display screen, for improving the screen ratio among the prior art, need dig the hole on the display screen, or set up the transparent screen relative with the camera, the display brightness who leads to the display area of transparent screen rather than the display area is inhomogeneous, the colour difference scheduling problem appears, guarantee the integrality of display screen through setting up optical element and light guide component, guarantee the luminous homogeneity of display area of display screen simultaneously, reduce the colour difference. When the photosensitive member 20 operates, the optical element 30 is disposed to be inclined with respect to the display surface of the display screen 10, at this time, the light-reflecting surface of the optical element 30 is disposed to be inclined with respect to the display surface of the display screen 10, an included angle θ between the optical element 30 and the display surface of the display screen 10 is greater than zero degrees, and an included angle θ between the optical element 30 and the display surface of the display screen 10 is not equal to 90 degrees, for example, the included angle θ between the optical element 30 and the display surface of the display screen 10 may be 45 degrees, and the optical element 30 is in a reflective state, so that ambient light is reflected to the light guide structure 40 by the optical element 30, and further the ambient light is guided to the photosensitive member 20, so that a scene in front of the display screen passes through a reflection light path, and is collected by a photosensitive member, such as a camera module, disposed on a non-display surface side of the display screen, so as to implement image capture under the screen.
In the technical solution of this embodiment, the display device includes a display screen, a photosensitive member, an optical element, and a light guide structure; the optical element is positioned on the display side of the display screen, and the projection of the optical element on the plane of the display surface of the display screen is partially or completely positioned in the display area of the display screen along the direction vertical to the display surface of the display screen; the optical element is used for being in a transmission state when the display screen displays; when the photosensitive component works, the photosensitive component is obliquely arranged relative to the display surface of the display screen and is in a reflection state, so that ambient light is reflected to the light guide structure through the optical element, and then the ambient light is guided to the photosensitive component, so that the screen occupation ratio is improved, and the image pickup under the screen is realized.
Optionally, on the basis of the foregoing embodiment, fig. 7 is a schematic cross-sectional structure diagram of a side view angle of another display device according to an embodiment of the present invention, where the display device further includes: a drive connection 60 and a rotary drive 70.
Wherein, the rotary driving mechanism 70 is connected with the optical element 30 through the transmission connecting mechanism 60; the rotary drive mechanism 70 is used to drive the optical element 30 to rotate via the transmission connection mechanism 60.
The rotation driving mechanism 70 may include a motor, etc., among others. The rotation driving mechanism 70 drives the optical element 30 to rotate via the transmission connection mechanism 60 to adjust the position of the optical element 30 relative to the display surface of the display screen 10. When the display screen 10 displays, the rotation driving mechanism 70 drives the optical element 30 to rotate to be perpendicular to the display surface of the display screen 10 through the transmission connecting mechanism 60. When the photosensitive member 20 is operated, the rotation driving mechanism 70 drives the optical element 30 to rotate through the transmission connection mechanism 60 until an included angle θ between the optical element 30 and the display surface of the display screen 10 is greater than zero and not equal to 90 degrees, so that the optical element 30 and the display surface of the display screen 10 are obliquely arranged.
Optionally, on the basis of the above embodiment, fig. 8 is a schematic top view structure diagram of another display device according to an embodiment of the present invention, and as shown in fig. 7 and fig. 8, the display device includes a display area 101 and a light shielding area 102 surrounding the display area 101. The display area 101 of the display device is arranged corresponding to the display area of the display screen 10. At least one end of the optical element 30 extends to the edge of the display area 101 of the display device. The connection end of the transmission connection mechanism 60 and the optical element 30 is located in the light shielding region 102.
The light-shielding region 102 is a non-display region. The area of the display screen 10 may be greater than or equal to the area of the display area 101 of the display device. The connection end of the driving connection mechanism 60 and the optical element 30 is located in the light shielding region 102 to prevent the driving connection mechanism from shielding light emitted from the display screen when the display screen displays. The area of the optical element 30 may be set according to the requirement, which is not limited in the embodiment of the present invention. Fig. 8 exemplarily shows a case where both ends of the optical element 30 extend to the edge of the display area 101. The two ends of the optical element 30 can be respectively connected with the corresponding transmission connecting mechanisms 60. Part or all of the light guide structure 40 may be located in the light blocking region 102. The display device is usually provided with a light shielding region 102, and a part or all of the light guide structure 40 is disposed in the original light shielding region 102, so that the ambient light reflected by the optical element 30 is guided to the photosensitive member 20 inside the display device through the light guide structure 40, the light shielding region is fully utilized, and an additional region for placing the light guide structure 40 is not required, so that the screen occupation ratio of the display device can be improved.
Optionally, on the basis of the above embodiment, with continued reference to fig. 2 to 8, the light shielding region 102 of the display device is provided with the light shielding layer 80. The light-shielding layer 80 is opaque, and the light-shielding layer 80 can shield the components in the light-shielding region 102 in the display device, so that the components in the display device are not visible. The light-shielding layer 80 may include an ink layer and the like. The light shielding layer 80 may shield the transmission connection mechanism 60, the light guide structure 40, and the like from view.
Alternatively, the rotation driving mechanism 70 may be located on a side of the display screen 10 away from the display surface, and a part or all of the rotation driving mechanism 70 is located in the display area 101 of the display device, so as to reduce the width of the light-shielding area and improve the screen occupation ratio of the display device compared to a mode in which the rotation driving mechanism 70 with a larger volume is only disposed in the light-shielding area 102.
Alternatively, on the basis of the above embodiments, as shown in fig. 2 and 8, the display screen 10 may include a plurality of sub-pixels 11 arranged in an array. When the display screen 10 displays, the projection of the first reflective element 31 along the thickness direction (parallel to the direction Z) of the display screen 10 is located in the gap between two adjacent rows or two columns of sub-pixels 11, so as to avoid the first reflective element 31 blocking the light emitted by the display screen when the display screen displays.
Alternatively, on the basis of the above-described embodiment, with continued reference to fig. 1 or fig. 4, the light guiding structure 40 comprises a second reflective element 41. The second reflective element 41 may be located in the light-blocking region 102 so as to direct the ambient light reflected by the optical element 30 to the interior of the display device and not be blocked by the light-opaque display screen 10. The second reflecting element 41 is disposed obliquely with respect to the plane of the display surface of the display screen 10, and the light reflecting surface of the second reflecting element 41 is disposed obliquely with respect to the plane of the display surface of the display screen 10.
Wherein the second reflective element 41 may comprise a mirror plate or the like. The angle between the second reflective element 41 and the plane of the display surface of the display screen 10 is not equal to zero degrees or 90 degrees. Illustratively, the angle between the second reflective element 41 and the plane of the display surface of the display screen 10 may be 45 degrees. The second reflecting member 41 may be disposed in parallel with the optical member 30 when the photosensitive member 20 operates. The angle between the second reflective element 41 and the plane of the display surface of the display screen 10 and the angle between the optical element 30 and the display surface of the display screen 10 may be set as required, which is not limited in the embodiment of the present invention. The light shielding layer 80 may shield the second reflective element 41 from view. When the photosensitive member 20 is operated, the ambient light may be reflected to the second reflecting member 41 via the optical member 30, and then reflected to the photosensitive member 20 via the second reflecting member 41.
Optionally, on the basis of the above embodiment, with continuing reference to fig. 4 or fig. 7, the light guiding structure further includes a third reflective element 42, and the second reflective element 41 is configured to reflect the ambient light reflected by the optical element 30 to the third reflective element 42; the third reflective element 42 is used for reflecting the light reflected by the second reflective element 41 to the photosensitive element 20. The photosensitive member 20 is located on the non-display surface of the display screen 10, i.e., on the side facing away from the display surface; the light entering direction of the photosensitive member 20 is parallel to the display surface of the display screen 10.
Here, when the photosensitive member 20 is operated, ambient light is reflected to the second reflecting member 41 via the optical member 30, and then reflected to the third reflecting member 42 via the second reflecting member 41, thereby guiding the ambient light to the photosensitive member 20. The third reflective element 42 may comprise a mirror plate or the like. The light-shielding layer 80 may shield the third reflective element 42 from view. The orientation of the photosensitive member 20 in fig. 4 and 7 is different from that of the photosensitive member 20 in fig. 1 (the light advancing direction of the photosensitive member 20 in fig. 1 is perpendicular to the display surface of the display screen 10), and the length H1 of the photosensitive member 20 in the light advancing direction thereof is greater than the length H2 of the photosensitive member 20 in the light advancing direction thereof, so that the technical solutions corresponding to fig. 4 and 7 can reduce the thickness of the display device compared to the technical solution corresponding to fig. 1.
Optionally, on the basis of the above-mentioned embodiment, with continued reference to fig. 1 to 7, the display device further includes a cover structure 50. The display screen 10 and the photosensitive member 20 are located on the same side of the cover plate structure 50. The optical element 30 may be located in the cover structure 50.
The cover plate structure 50 may include a glass substrate, etc. Part or all of the light guide structure 40 may be located in the cover plate structure 50. The second reflective element 41 may be located in the cover structure 40. The cover structure 50 may cover the display region 101 and the light blocking region 102. The rotational drive mechanism 70 may be located on a side of the display screen 10 remote from the cover structure 50. The light shielding layer 80 may be disposed on the cover plate structure 50.
Alternatively, on the basis of the above-described embodiment, with continued reference to fig. 1, 4 or 7, the cover structure 50 includes a first cover 51 and a second cover 52 that are disposed opposite and spaced apart along the thickness direction (parallel to the direction Z) of the display screen 10.
Wherein the optical element 30 may be located between the first cover plate 51 and the second cover plate 52. Part or all of the light guide structure 40 may be located between the first cover plate 51 and the second cover plate 52.
The first cover plate 51 may be a light-transmitting cover plate, such as a glass cover plate. The second cover plate 52 may be a light-transmissive cover plate, and may be a glass cover plate, for example. Based on double-deck apron, through a simple light path design, realize camera and extremely whole screen account for than dual function under the screen. The display screen is a whole screen, and other special processing is not needed. When the display screen 10 displays, light emitted from the display screen 10 may be transmitted through the first cover plate 51 and the second cover plate 52. The second reflective element 41 may be located between the first cover plate 51 and the second cover plate 52. The light shielding layer 80 may be disposed on a cover plate far away from the display screen 10, for example, in fig. 1, the light shielding layer 80 is disposed on a side of the second cover plate 52 close to the first cover plate 51, and the first cover plate 51 is located between the second cover plate 52 and the display screen 10. The direction X, the direction Y and the direction Z may be perpendicular to each other. One side of the optical element 30 may be fixed to the first cover plate 51 or the second cover plate 52. The first cover 51 may be provided with an opening, and the transflective switchable optical element 32 may be laid flat in the opening when the display screen 10 displays. Through setting up optical element in the apron, need not to set up light-transmitting zone on the display screen, like trompil or transparent display area, guaranteed the structural integrality of display screen for the demonstration homogeneity of display screen.
Alternatively, on the basis of the above embodiments, fig. 9 is a schematic cross-sectional structure diagram of a first reflective element according to an embodiment of the present invention, and the first reflective element 31 may include a first substrate 312 and a reflective material layer 311 disposed on the first substrate 312. The reflective material layer 311 may include a nano-metal reflective layer. The first substrate 312 may be a light-transmitting substrate, such as a glass substrate. The thickness D of the reflective material layer 311 is relatively thin, so as to prevent the reflective material layer 311 from blocking light emitted by the display screen when the display screen displays the image, thereby affecting the display effect. The thickness of the reflective material layer 311 may be set according to the requirement, which is not limited in the embodiment of the invention. When the display screen 10 displays, the projection of the reflective material layer 311 along the thickness direction (parallel to the direction Z) of the display screen 10 is located in the gap between two adjacent rows or two adjacent columns of sub-pixels 11, so as to avoid that when the display screen displays, the reflective material layer 311 blocks the light emitted by the display screen, which affects the display effect.
Alternatively, on the basis of the foregoing embodiments, fig. 10 is a schematic cross-sectional structure diagram of a transflective switchable optical element provided in an embodiment of the present invention in a transmissive state, fig. 11 is a schematic cross-sectional structure diagram of a transflective switchable optical element provided in an embodiment of the present invention in a reflective state, and the transflective switchable optical element 32 may include: a second substrate 321, an electrode layer 322, an insulating layer 323, a first liquid layer 327, a second liquid layer 325, a barrier 324, and a third substrate 326.
The electrode layer 322 is disposed on the second substrate 321, the insulating layer 323 is disposed on the electrode layer 322, and the insulating layer 323 has a characteristic similar to that of the first liquid layer 327, so that the first liquid layer 327 can be well spread when no voltage is applied to the electrode layer 322. The first liquid layer 327 is disposed on the insulating layer 323, and the first liquid layer 327 has a property of changing its spreading and shrinking states under the action of an electric field and having high reflection to light. The first liquid layer 327 is an oil layer containing a white pigment, and can reflect light well and change a spreading state by electric field driving of the electrode layer 322.
The second liquid layer 325 surrounds and covers the first liquid layer 327, and the first liquid layer 327 and the second liquid layer 325 are immiscible. Optionally, the second liquid layer 325 is a transparent liquid, which may be, for example, water. The barrier 324 is disposed at two ends of the first liquid layer 327, and the barrier 324 has a property of being hydrophilic to the second liquid layer 325, i.e., hydrophilicity. The spreading and shrinking states of the first liquid layer 327 can be changed by controlling the voltage of the electrode layer 322, thereby enabling switching of the transmissive and reflective states of the transflective switchable optical element 32.
The spreading and shrinking of the first liquid layer 327 can be controlled by controlling the voltage applied to the electrode layer 322. When no voltage is applied to the electrode layer 322, the first liquid layer 327 spreads, and since the first liquid layer 327 contains a white pigment, it has a good reflection effect on light, and thus it acts as a reflection layer, and the transflective switchable optical element 32 is in a reflection state, as shown in fig. 11. When a voltage is applied to the electrode layer 322, the first liquid layer 327 contracts and the transflective switchable optical element 32 is in a transmissive state, as shown in fig. 10.
It should be noted that the structures of the second reflecting element 41 and the third reflecting element 42 may be the same as or similar to the structure of the first reflecting element in fig. 9. The structure of the second and third reflective elements 41, 42 may be the same as or similar to that of the transflective switchable optical element in fig. 10 and 11. Alternatively, the second reflective element 41 and the third reflective element 42 may always be in a reflective state. Alternatively, the second reflecting member 41 and the third reflecting member 42 are in a reflecting state when the photosensitive member 20 is operated, and in a reflecting state or a transmitting state when the display screen displays.
The embodiment of the invention provides a control method of a display device. Fig. 12 is a flowchart of a control method of a display device according to an embodiment of the present invention. The control method is implemented based on the display device provided by the embodiment of the invention, for example, the embodiment corresponding to fig. 1 or fig. 7. On the basis of the above embodiment, the control method of the display device includes:
and 110, when the display screen displays, enabling the optical element to be vertically arranged relative to the display surface of the display screen.
As shown in fig. 2, when the display screen 10 displays, the optical element 30 is vertically disposed relative to the display surface of the display screen 10, so as to avoid a situation that the optical element blocks light emitted by the display screen when the display screen displays, thereby realizing full-screen display of the display screen.
Step 120, when the photosensitive member operates, the optical element is obliquely disposed relative to the display surface of the display screen and is in a reflective state, so that the ambient light is reflected to the light guide structure by the optical element, and further guided to the photosensitive member.
As shown in fig. 3, when the photosensitive member 20 is operated, the optical element 30 is disposed obliquely to the display surface of the display screen 10, so that the ambient light is reflected by the optical element 30 to the light guide structure 40, and then is guided to the photosensitive member 20, so as to realize the image capture under the screen. The optical element 30 can be driven to rotate by the rotation driving mechanism 70 through the transmission connecting mechanism 60 to adjust the position of the optical element 30 relative to the display surface of the display screen 10.
The control method provided by the embodiment of the present invention is implemented based on the display device provided by the embodiment of the present invention, and therefore, the control method provided by the embodiment of the present invention also has the beneficial effects described in the above embodiments, and details are not described herein again.
The embodiment of the invention provides a control method of a display device. Fig. 13 is a flowchart of a control method of a display device according to another embodiment of the present invention. The control method is implemented based on the display device provided by the embodiment of the present invention, for example, the embodiment corresponding to fig. 2. On the basis of the above embodiment, the control method of the display device includes:
and step 210, enabling the optical element to be in a transmission state when the display screen displays.
As shown in fig. 5, when the display screen 10 displays, the optical element 30 may be in a transmissive state, so as to avoid a situation that the optical element blocks light emitted from the display screen when the display screen displays, thereby implementing full-screen display of the display screen.
Step 220, when the photosensitive member operates, the optical element is obliquely arranged relative to the display surface of the display screen and is in a reflective state, so that the ambient light is reflected to the light guide structure by the optical element, and then is guided to the photosensitive member.
As shown in fig. 6, when the photosensitive member 20 is operated, the optical element 30 is switched from the transmissive state to the reflective state, so that the ambient light is reflected by the optical element 30 to the light guide structure 40, and is further guided to the photosensitive member 20, thereby realizing the image capture under the screen.
The control method provided by the embodiment of the present invention is implemented based on the display device provided by the embodiment of the present invention, and therefore, the control method provided by the embodiment of the present invention also has the beneficial effects described in the above embodiments, and details are not described herein again.
Alternatively, on the basis of the above-described embodiment, the display screen 10 and the photosensitive member 20 operate in time division.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A display device, comprising: the display screen, the photosensitive component, the optical element and the light guide structure;
wherein the optical element is located on a display side of the display screen; in a direction perpendicular to the display surface of the display screen, part or all of the projection of the optical element on the plane of the display surface of the display screen is positioned in the display area of the display screen; the optical element is used for being in a transmission state when the display screen displays, or is vertically arranged relative to the display surface of the display screen; when the photosensitive component works, the display screen is obliquely arranged relative to the display surface of the display screen and is in a reflection state, so that ambient light is reflected to the light guide structure through the optical element, and then is guided to the photosensitive component.
2. The display device of claim 1, wherein the optical element is a transflective switchable optical element configured to be in a transmissive state when displayed on the display screen.
3. The display device according to claim 1, wherein the optical element is a first reflective element configured to be vertically disposed with respect to a display surface of the display screen when the display screen is displaying.
4. The display device according to claim 1, further comprising: the optical element connecting device comprises a transmission connecting mechanism and a rotary driving mechanism, wherein the rotary driving mechanism is connected with the optical element through the transmission connecting mechanism, and the rotary driving mechanism is used for driving the optical element to rotate through the transmission connecting mechanism.
5. The display device according to claim 4, wherein the display device comprises a display area and a light shielding area surrounding the display area, the display area of the display device is disposed corresponding to the display area of the display screen, at least one end of the optical element extends to an edge of the display area of the display device, and the connection end of the transmission connection mechanism and the optical element is located in the light shielding area;
and a shading layer is arranged in the shading area of the display device.
6. The display device according to claim 5, wherein the light guide structure comprises a second reflective element, the second reflective element is located in the light shielding region, and the second reflective element is disposed obliquely with respect to a plane of the display surface of the display screen.
7. The display device according to claim 6, wherein the light guide structure further comprises a third reflecting element for reflecting the light reflected by the second reflecting element to the photosensitive member, the photosensitive member is located on a side of the non-display surface of the display screen, and a light entering direction of the photosensitive member is parallel to the display surface of the display screen.
8. A display device as claimed in claim 1, further comprising a cover structure, the display screen and the photosensitive member being located on the same side of the cover structure, the optical element being located in the cover structure;
the cover plate structure comprises a first cover plate and a second cover plate which are opposite to each other in the thickness direction of the display screen and are arranged at intervals; the optical element is located between the first cover plate and the second cover plate.
9. A control method for a display device according to any one of claims 1 to 8, comprising:
when the display screen displays, the optical element is in a transmission state, or is vertically arranged relative to the display surface of the display screen;
when the photosensitive component works, the optical element is obliquely arranged relative to the display surface of the display screen and is in a reflection state, so that the ambient light is reflected to the light guide structure through the optical element, and then is guided to the photosensitive component.
10. The control method according to claim 9, wherein the display screen and the photosensitive member operate time-divisionally.
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