CN110658582A - Display device - Google Patents
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- CN110658582A CN110658582A CN201911045059.1A CN201911045059A CN110658582A CN 110658582 A CN110658582 A CN 110658582A CN 201911045059 A CN201911045059 A CN 201911045059A CN 110658582 A CN110658582 A CN 110658582A
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- light
- light source
- backlight
- display device
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- 239000012780 transparent material Substances 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 description 12
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- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000001795 light effect Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0055—Reflecting element, sheet or layer
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
- G02B6/0083—Details of electrical connections of light sources to drivers, circuit boards, or the like
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
Abstract
The application provides a display device, which comprises a display panel and a backlight module. The backlight module comprises a backlight unit provided with a backlight hole; the light guide ring is arranged at the inner side of the backlight hole and comprises a light inlet surface and a light outlet surface, and the light guide ring is used for guiding the light beams entering the light guide ring to the display panel area corresponding to the backlight hole; and the light source component is used for providing a light source for the light guide ring. This application sets up a backlight hole and sets up a leaded light ring at this backlight hole through the region that corresponds at the module of making a video recording for the light source that the light source part provided can lead the display panel region that this backlight hole corresponds through leaded light ring. When the camera in the camera module is started, the light source is closed, and when the camera in the camera module is not started, the light source is opened or closed, so that the through hole or the blind hole on the display panel can have the display capability again, and the image quality of the camera module is still maintained.
Description
Technical Field
The present disclosure relates to display devices, and particularly to a display device.
Background
With the development of liquid crystal display technology, especially the development of full-screen technology, most manufacturers currently install an inward opening in the backlight module of the display device for the placement of the camera under the screen, and thus receive the incident light from the external environment.
In the display device in the prior art, when the off-screen camera is correspondingly disposed below the opening of the backlight module of the display device, the opening is only used as a receiving and transmitting channel for receiving the ambient light by the off-screen camera. Because no light source is arranged on the inner side of the opening to provide brightness, when the display device is used, the area of the opening of the backlight module is in an idle state, and any display effect cannot be provided.
Therefore, a display device is needed to solve the above technical problems.
Disclosure of Invention
The application provides a display module assembly to solve the technical problem that the camera region can't show under the screen among the current display device.
In order to solve the above problems, the technical solution provided by the present application is as follows:
the application provides a display device, it includes display panel, is located the backlight unit of display panel one side, backlight unit includes:
a backlight unit provided with a backlight hole;
the light guide ring is arranged on the inner side of the backlight hole, comprises a light inlet surface arranged far away from the display panel and a light outlet surface arranged close to the display panel, and is used for guiding light beams entering the light guide ring to the display panel area corresponding to the backlight hole;
and the light source component is used for providing a light source for the light guide ring.
In the display device of the present application,
the light source component comprises a driving circuit board and at least one light source positioned on the driving circuit board, the light sources are arranged on the driving circuit board in an array manner, and the light sources are distributed around the inner side or the outer side of the backlight hole;
one side of the light source faces the light incident surface of the light guide ring.
In the display device of the present application,
the plane where the light emergent surface is located is perpendicular to the plane where the light incident surface is located or forms an acute angle.
In the display device of the application, the light guide ring further comprises a light reflecting surface, and the plane where the light reflecting surface is located is perpendicular to the plane where the light incident surface is located or forms an acute angle.
In the display device of the present application,
the light incident surface is formed by at least one Fresnel lens in the same plane in an integrated mode.
In the display device of the present application,
the Fresnel lens is provided with at least one annular tooth-shaped structure which is concentrically arranged, and a convex lens structure which is surrounded by the annular tooth-shaped structure.
In the display device of the present application,
the light-emitting surface is integrally formed by at least one micro-lens film on the same plane;
the plane of the light incident surface is superposed with the plane of the focal point of the micro-lens film;
the light incident surface is provided with at least one light hole, and each light hole corresponds to each micro-lens film.
In the display device of the application, when the light hole coincides with the focal point of the micro lens film, light rays emitted by the light source are refracted by the micro lens film to form parallel light beams perpendicular to the light incident surface;
when the light hole deviates from the focus and is positioned on the focal plane of the micro lens film, the light rays emitted by the light source are refracted by the micro lens film to form parallel light beams forming a certain angle with the incident plane.
In the display device of the application, the light guide assembly further comprises a metal reflecting layer, and the metal reflecting layer is arranged on one side, facing the light source, of the light incident surface of the light guide ring; the light holes are arranged on the metal reflecting layer in an array mode.
In the display device of the present application,
the light source component further comprises a diffuse reflection layer, the diffuse reflection layer is arranged on the driving circuit board, and the light source is exposed on the diffuse reflection layer.
In the display device of the present application, each light-transmitting hole is located on a side of the focal point of each corresponding microlens film away from the center of the light guide ring.
In the display device of the present application,
the light source comprises one of an LED light source or a mini LED light source.
In the display device, the display device further comprises a camera module located on one side, away from the display panel, of the display module, and the camera module corresponds to the backlight hole;
the control component is electrically connected with the camera module and the light source component;
when a camera in the camera module is started, the control part controls the light source to be closed;
when a camera in the camera module is closed, the control component controls the light source to be turned on or turned off.
In the display device of the application, the backlight module further comprises a light barrier film, and the light barrier film is arranged between the light guide ring and the backlight unit.
In the display device of the present application,
the light guide ring is made of transparent materials or matte materials.
In the display device of the application, the backlight unit comprises a reflection sheet positioned on a back plate, a light guide plate positioned on the reflection sheet, a diffusion sheet positioned on the light guide plate, a lower brightness enhancement sheet positioned on the diffusion sheet, and an upper brightness enhancement sheet positioned on the lower brightness enhancement sheet;
the backlight hole sequentially penetrates through the back plate, the reflecting sheet, the light guide plate, the diffusion sheet, the lower light intensifying sheet and the upper light intensifying sheet from bottom to top.
In the display device of the present application, the display panel includes:
the lower polarizer is arranged on the backlight module;
the array substrate is arranged on the lower polarizer;
the color film substrate is arranged on the array substrate; and
the upper polaroid is arranged on the color film substrate;
and through holes are formed in the positions, corresponding to the backlight holes, of the lower polarizer and the upper polarizer.
Has the advantages that: this application sets up a backlight hole and is in through the region that corresponds at the module of making a video recording the downthehole light ring that leads that sets up in backlight for the light source that the light source part provided can lead through light ring the display panel region that the backlight hole corresponds. When the camera in the camera module is started, the light source is closed, and when the camera in the camera module is not started, the light source is opened or closed, so that the through hole or the blind hole in the display panel can have the display capability again, and the image quality of the camera module is still maintained.
Drawings
In order to illustrate the embodiments or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for a person skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a first block diagram of a display device according to the present application;
FIG. 2 is a second structural view of the display device of the present application;
FIG. 3 is a third structural view of the display device of the present application;
FIG. 4 is a schematic view of a first structure of a backlight module in a display device according to the present invention;
FIG. 5 is a schematic view of a first structure of a light source assembly of the display device of the present invention;
FIG. 6 is a schematic structural diagram of a light guiding ring and a light source in the display device of the present invention;
FIG. 7 is a first bottom view of a light guiding ring in a display device of the present invention;
FIG. 8 is a second structural diagram of a backlight module of a display device according to the present invention;
FIG. 9 is a schematic diagram illustrating the optical path of a microlens film in a display device according to the present invention;
FIG. 10 is a schematic view of a first structure of a light source assembly in a display device according to the present invention;
FIG. 11 is a second structural diagram of a light source assembly in a display device according to the present invention;
FIG. 12 is a schematic view of a second structure of a backlight module in a display device according to the present invention;
fig. 13 is a fourth structural view of the display device of the present application.
Detailed Description
The following description of the various embodiments refers to the accompanying drawings, which are included to illustrate specific embodiments that can be implemented by the application. Directional phrases used in this application, such as [ upper ], [ lower ], [ front ], [ rear ], [ left ], [ right ], [ inner ], [ outer ], [ side ], etc., refer only to the directions of the attached drawings. Accordingly, the directional terminology is used for purposes of illustration and understanding, and is in no way limiting. In the drawings, elements having similar structures are denoted by the same reference numerals.
In the display device in the prior art, when the off-screen camera is correspondingly disposed below the opening of the backlight module of the display device, the opening is only used as a transceiving channel for receiving the ambient light by the off-screen camera. Because no light source is arranged on the inner side of the opening to provide brightness, when the display device is used, the area of the opening of the backlight module is in an idle state, and any display effect cannot be provided. The present application provides a display device based on the above technical problem.
Referring to fig. 1, the display device 300 includes a display panel 200, a backlight module 100 disposed at one side of the display panel 200, and the backlight module 100 includes:
the backlight unit 110 is provided with a backlight hole 120. In this embodiment, the backlight hole 120 may be a circular hole.
The light guide ring 130 is disposed inside the backlight hole 120, the light guide ring 130 includes a light incident surface 131 disposed far away from the display panel 200 and a light emitting surface 132 disposed near the display panel 200, and the light guide ring 130 is configured to guide the light beam entering the light guide ring 130 to the display panel region 210 corresponding to the backlight hole 120. The shape and size of the light guide ring 130 are matched with those of the backlight hole 120.
A light source component 140 for providing a light source for the light guiding ring 130. The shape and size of the light source component 140 are matched with those of the light guide ring 130.
In this embodiment, the light source part 140 includes a driving circuit board 141 and at least one light source 142 located on the driving circuit board 141, the light sources 142 are arranged on the driving circuit board 141 in an array, and the light sources are distributed around the inner side or the outer side of the backlight hole. One side of the light source 142 faces the light incident surface 131 of the light guide ring 130.
In this embodiment, the display device 300 may further include a camera module 400 located at one side of the backlight module 100 and far away from the display panel 200, wherein the camera module 400 corresponds to the backlight hole 120. The orthographic projection of the camera module 400 on the backlight unit 110 is located in the backlight hole 120.
In this embodiment, whether the display device 300 is provided with the camera module 400 is not particularly limited in this application.
The present application provides a display device 300, which includes a display panel 200, a backlight module 100 and a camera module 400. The backlight module 100 includes a backlight unit 110 having a backlight hole 120, and the camera module 400 corresponds to the backlight hole 120; the light guide ring 130 is arranged inside the backlight hole 120, the light guide ring 130 includes a light incident surface 131 and a light emitting surface 132, and the light guide ring 130 is used for guiding the light beam entering the light guide ring 130 to the display panel region 210 corresponding to the backlight hole 120; a light source component 140 for providing a light source for the light guiding ring 130. In the present application, a backlight hole 120 is disposed in an area corresponding to the camera module 400, and a light guide ring 130 is disposed in the backlight hole 120, so that a light source provided by the light source component 140 can be guided to the display panel area 210 corresponding to the backlight hole 120 through the light guide ring 130. When the camera in the camera module 400 is started, the light source 142 is turned off, and when the camera in the camera module 400 is not started, the light source 142 is turned on or off, so that the through holes or blind holes in the display panel 200 can have display capability again, and the image quality of the camera module 400 is still maintained.
The technical solution of the present application will be described below with reference to specific examples.
Example one
Referring to fig. 1 to 3, a plane of the light emitting surface 132 and a plane of the light incident surface 131 form an acute angle.
Referring to fig. 1, an included angle between the light emitting surface 132 and the light incident surface 131 is an acute angle. In practical applications, an included angle between the light emitting surface 132 and the light incident surface 131 may be 10 degrees, 20 degrees, 30 degrees, 45 degrees, 50 degrees, 60 degrees, 70 degrees, 80 degrees, and the like, so as to ensure the light beam entering from the light incident surface 131.
When the light is emitted from the light emitting surface 132, the light is projected to the display panel area 210 corresponding to the backlight hole 120 to compensate for an extra light source of the display panel area 210 corresponding to the camera module 400, so that the area of the display panel 200 can display normally without affecting the normal operation of the camera module 400.
In this embodiment, the backlight module 100 further includes a light blocking film 150. The light blocking film 150 is disposed between the light guide ring 130 and the backlight unit 110. The light blocking film 150 is used for blocking light of the backlight module 100 and preventing the light from being affected by light emitted from the light source 142 of the backlight module 100 when the camera module 400 takes a picture.
Based on fig. 1, the light guiding ring 130 of the display device 300 is further modified to have the cross-sectional structure as illustrated in fig. 2 or fig. 3 according to different designs of the backlight unit 110, so as to guide the light beams emitted by the light source components 140 to be emitted toward the display panel region 210 corresponding to the backlight hole 120 through the arrangement of the light emitting surface 132 of the light guiding ring 130, thereby providing proper brightness to the display panel region 210 corresponding to the backlight hole 120.
In this embodiment, when the light guiding ring 130 is configured as the cross-sectional structure shown in fig. 3 or fig. 4, the light blocking film 150 disposed at the boundary between the light guiding ring 130 and the backlight unit 110 changes its shape accordingly, so as to effectively block the light inside the backlight unit 110 from leaking to the central area of the backlight hole 120, thereby avoiding affecting the image capturing quality of the image capturing module 400.
In this embodiment, the light source 142 may include one of an LED light source or a mini LED light source. The light source part 140 in the following embodiments may be the same as the present embodiment.
In this embodiment, the light guiding ring 130 may be made of a transparent material or a matte material. The transparent light guiding ring 130 can effectively guide the light beam emitted by the light source component 140 to be emitted towards the display panel region 210 corresponding to the backlight hole 120 through the light emitting surface 132, so as to reduce the light loss phenomenon of the light source component 140. The light guide ring 130 material in the following embodiments may be the same as that of the present embodiment.
Referring to fig. 1, the display device 300 further includes a control unit 160.
The control member 160 is electrically connected to the camera module 400 and the light source member 140, respectively. The control component 160 is configured to turn off the light source component 140 when the camera module 400 is started, so that the camera module 400 can obtain external image data without interference. When the camera module 400 is turned off, the light source part 140 can be controlled to be turned on or off according to the actual display condition of the display panel 200.
In this embodiment, when the camera module 400 is started, the light source component 140 is turned off, so that the camera module 400 can receive the ambient light from the outside without being affected by the ambient light for sensing. When the camera module 400 is not activated, the light source device 140 can be turned on according to the actual display condition of the display panel 200 and emit a light beam toward the display panel region 210 of the display panel 200 to provide brightness.
Alternatively, the camera module 400 can turn off the light source 140 without emitting light beams toward the display panel region 210 of the display panel 200 when not displaying, and turn the display panel region 210 corresponding to the backlight hole 120 into a completely black state, so that the display panel 200 that is in an idle state and cannot provide any display effect in the prior art can have display capability again, and still maintain the quality of images that can be obtained by the camera under the screen, and improve the application scenario and the use experience of the terminal product (i.e., the display panel 200 adopting the full-screen technology), thereby having competitiveness.
In this embodiment, a backlight hole 120 is disposed in a region corresponding to the camera module 400, and a light guiding ring 130 is disposed in the backlight hole 120, so that a light source provided by the light source component 140 can be guided to the display panel region 210 corresponding to the backlight hole 120 through the light guiding ring 130. When the camera in the camera module 400 is started, the light source 142 is turned off, and when the camera in the camera module 400 is not started, the light source 142 is turned on or off, so that the through holes or blind holes in the display panel 200 can have display capability again, and the image quality of the camera module 400 is still maintained.
Example two
This embodiment is the same as or similar to the first embodiment, except that:
on the basis of fig. 1 to 3, the surface of the light-emitting surface 132 may further have a microstructure, so that the light emitted from the light-emitting surface 132 can be distributed as uniformly as possible inside the backlight hole 120 due to the arrangement of the microstructure, and the display panel region 210 corresponding to the backlight hole 120 has uniform brightness.
Referring to fig. 4 to 6, a plane of the light emitting surface 132 is perpendicular to or forms an acute angle with a plane of the light incident surface 131.
In this embodiment, when the plane where the light emitting surface 132 is located and the plane where the light incident surface 131 is located form an acute angle, the light is convenient to propagate upward when being refracted from the light emitting surface 132 and entering the backlight hole 120, that is, in the direction of the aperture of the backlight hole 120.
In this embodiment, the backlight hole 120 is used for accommodating the camera module 400, or the backlight hole 120 and the lens of the camera module 400 are correspondingly disposed.
In this embodiment, the display device 300 also includes the same control components (not shown) as in the first embodiment. The control unit may control the light source unit 140 and the camera module 400 according to actual conditions.
When the camera in the camera module 400 is turned on, the light source component 140 is in a non-operating state, and the backlight hole 120 serves as a channel for the camera module 400 to receive ambient light. When the camera in the camera module 400 is turned off, the light source unit 140 is in a working state, and light emitted by the light source 142 in the light source unit 140 passes through the light guide ring 130 to provide light to the backlight hole 120.
In this embodiment, the light guiding ring 130 has the function of total reflection and refraction of light, so that the light can propagate to the area of the backlight hole 120 as far as possible. In this embodiment, the light guide ring 130 and the light source component 140 are disposed inside the backlight hole 120, so that a light source is provided inside the backlight hole 120, and the problem of dark color at the corresponding position of the backlight hole 120 when the camera is turned off is solved.
In this embodiment, the backlight module 100 further includes a light blocking film 150, and the light blocking film 150 is disposed between the light guiding ring 130 and the backlight unit 110. The light blocking film 150 is provided to block light of the backlight module 100 and prevent the light from being affected by light emitted from the light source part 140 of the backlight module 100 when the camera takes a picture.
Referring to fig. 5 to 6, the light guiding ring 130 further includes a reflective surface 133 on a side thereof close to the light blocking film 150. The plane where the light reflecting surface 133 is located is perpendicular to or forms an acute angle with the plane where the light incident surface 131 is located.
In the present embodiment, the light of the light source 142 (the arrows in fig. 5 and 6 indicate the propagation direction of the light) enters the light guiding ring 130 from the light incident surface 131, and is reflected by the light reflecting surface 133 so that the light exits from the light emitting surface 132 and enters the backlight hole 120, thereby providing the light to the backlight hole 120. The plane of the light reflecting surface 133 and the plane of the light incident surface 131 form an acute angle, which is more convenient for the light of the light source 142 to enter the light guiding ring 130 from the light incident surface 131 and then enter the backlight hole 120 through reflection.
Referring to fig. 4, the light guiding ring 130 includes the light incident surface 131 and the light emitting surface 132 but does not include the light reflecting surface 133, and a plane of the light emitting surface 132 and a plane of the light incident surface 131 form an acute angle.
Referring to fig. 5, the plane of the light emitting surface 132 is perpendicular to the plane of the light incident surface 131, and the plane of the light reflecting surface 133 forms an acute angle with the plane of the light incident surface 131.
Referring to fig. 6, an acute angle is formed between the plane of the light emitting surface 132 and the plane of the light incident surface 131, and an acute angle is also formed between the plane of the light reflecting surface 133 and the plane of the light incident surface 131.
The embodiments of the present invention are not limited to the above-mentioned structures of the light guiding ring 130, and it is within the scope of the present invention that the light emitted from the light source 142 is transmitted into the backlight hole 120 through the light guiding ring 130.
In this embodiment, the light guiding ring 130 may be made of plastic or optical glass, and preferably has a certain refractive index so that light can be transmitted to the area of the backlight hole 120 as much as possible.
Referring to fig. 7, the light incident surface 131 may be formed by integrally forming a plurality of fresnel lenses 160 in the same plane. That is, the fresnel lenses 160 are annularly distributed on the light incident surface 131.
In this embodiment, the light sources 142 are disposed in one-to-one correspondence with the fresnel lenses 160. The number of the light sources 142 is equal to that of the fresnel lenses 160.
In the present embodiment, the light source 142 is located at the focal point of the fresnel lens 160. The light emitted from any of the light sources 142 can form parallel light after passing through the corresponding fresnel lens 160, as shown in fig. 5 to 6.
Referring to fig. 7, the fresnel lens 160 has a plurality of concentrically arranged annular tooth-shaped structures 161 and a convex lens structure surrounded by the annular tooth-shaped structures 161. The fresnel lens 160, also known as a screw lens, is made of a thin sheet of polyolefin material that is injection molded or made of glass. One surface of the fresnel lens 160 is a plane, and the other surface is inscribed with concentric circles from small to large, and the optical material is removed as much as possible to reduce the thickness, while the curvature of the surface is maintained, so that the concentrically arranged annular tooth-shaped structure 161 is formed.
Referring to fig. 5 to 6, the light source 142 is located at a focal point of the fresnel lens 160 to emit light, and the light is incident from one side of the annular tooth-shaped structure 161 and exits through the fresnel lens 160 in a parallel light manner, so that the fresnel lens 160 of the present embodiment is equivalent to an effect of a common fresnel lens 160 after being thinned.
In the present embodiment, the shape and size of the driving circuit board 141 are matched with the shape and size of the light guiding ring 130, that is, the driving circuit board is disposed in a ring shape.
In this embodiment, the light sources 142 may be distributed on the driving circuit board 141 in an array.
Since the light pattern of the light source 142 is relatively divergent, in order to better realize the light guiding function and make the best use of the light effect, the light incident surface 131 of the light guiding ring 130 may include a plurality of fresnel lenses 160. The light source 142 may be located at a focal point of the fresnel lens 160, so as to realize a large-angle light collimation effect of the light source, and avoid a light leakage problem of the backlight module 100 caused by divergent light.
Referring to fig. 4, the light incident surface 131 of the light guiding ring 130 is clamped on the back plate 111, and the light source 142 and the upper surface of the back plate 111 are in the same plane. This facilitates the fixation of the light guiding ring 130 inside the backlight hole 120. Of course, in other embodiments, the light source 142 and the light incident surface 131 may be disposed at other positions of the light guiding ring 130, and the modifications thereof are within the scope of the present invention.
In the display device 300 provided by this embodiment, the light guide ring 130 and the light source component 140 are disposed inside the backlight hole 120, so that a problem that no light source is provided inside the backlight hole 120, and a technical problem that the color of the display device 300 at a position corresponding to the backlight hole 120 is dark when the camera is turned off and enters a display state are solved.
EXAMPLE III
This embodiment is the same as or similar to the embodiment, except that:
referring to fig. 8 to 12, the light emitting surface 132 is integrally formed by a plurality of microlens films 170 located on the same plane.
In the present embodiment, the microlens films 170 are annularly distributed on the light emitting surface 132. The plane of the light incident surface 131 coincides with the plane of the focal point O of the microlens film 170. The light incident surface 131 is provided with a plurality of light holes 171, and each light hole 171 is disposed corresponding to each microlens film 170, so that light rays emitted from the light source 142 enter through the light incident surface 131 and are refracted and emitted from the microlens film 170 of the light emitting surface 132, and finally emitted parallel light beams can be obtained.
In this embodiment, the arrangement of the light source part 140 may be the same as that of the embodiment. The driving circuit board 141 may be a flexible circuit board, which is made of polyimide or polyester film as a base material, and has the characteristics of high wiring density, light weight, and thin thickness.
In this embodiment, the light hole 171 may be located on a plane where the focal point O of the microlens film 170 is located. That is, the light-transmitting hole 171 is located at the focal plane of the microlens film 170, and the direction of the principal ray of most of the light passing through the microlens film 170 becomes directional depending on the positions of the light-transmitting hole 171 and the focal point O of the microlens film 170.
In the present embodiment, when the light-transmitting hole 171 coincides with the focal point O of the micro-lens film 170, the light (indicated by an arrow in fig. 8 and 9) emitted from the light source 142 is refracted by the micro-lens film 170 to form a parallel light beam perpendicular to the light incident surface 131. When the light hole 171 deviates from the focal point O and is located on the focal plane of the microlens film 170, the light emitted from the light source 142 is refracted by the microlens film 170 to form a parallel light beam forming a certain angle with the incident plane.
Therefore, the present embodiment can control the light emitting direction of the incident light by adjusting the position of the light hole 171 relative to the focal point O of the microlens film 170, so as to guide the light emitted from the light source 142 to a certain direction.
Referring to fig. 8, the backlight module 100 further includes a metal layer reflection layer 172. The metal layer reflection layer 172 is disposed on a side of the light incident surface 131 of the light guide ring 130 facing the light source 142. A plurality of light holes 171 are arranged in an array on the metal layer reflection layer 172.
In this embodiment, the plane of the light incident surface 131 coincides with the plane of the focal point O of the microlens film 170, so that the plane of the metal layer reflection layer 172 coincides with the plane of the focal point O of the microlens film 170, that is, the light hole 171 is located in the plane of the focal point O of the microlens film 170.
In the present embodiment, the light hole 171 is disposed such that the light emitted from the light source 142 can be approximately used as a point light source.
Referring to fig. 8, the light source part 140 further includes a diffuse reflection layer 143. The diffuse reflection layer 143 is disposed on the driving circuit board 141, and the light source 142 is exposed on the diffuse reflection layer 143.
In this embodiment, the diffuse reflection layer 143 is used for reflecting the light that does not pass through the light hole 171, and the diffuse reflection layer 143 is disposed in parallel with the metal layer reflection layer 172. The light that does not pass through the light hole 171 is reflected by the metal layer reflection layer 172 and then diffusely reflected by the diffuse reflection layer 143, so that the light with random directions is filled between the metal layer reflection layer 172 and the diffuse reflection layer 143, thereby achieving the purpose of utilizing the light emitted by the light source 142 for multiple times. The invention reuses the light rays reflected for many times, reduces the light efficiency loss and achieves the energy-saving effect.
In this embodiment, the material of the diffuse reflection layer 143 may include white ink, which has a good light reflection effect and is not easy to absorb light.
In the present embodiment, each light-transmitting hole 171 is located on a side of the focal point O of each corresponding microlens film 170 away from the center of the light-guiding ring 130. The centers of two adjacent light holes 171 are spaced from the focal point O of two adjacent microlens films 170. Thus, the light holes 171 are all deviated from the focal point O of the microlens film 170, and the light emitted from the light source 142 is refracted by the microlens film 170 to form parallel light beams having a certain angle with the incident surface, and the parallel light beams are all directed to one side of the center of the light guide ring 130.
Referring to fig. 10 to 11, the light sources 142 are arranged on the driving circuit board 141 in an array. One side of the light source 142 is a light emitting side. The light sources 142 are arranged in an array in various manners.
Referring to fig. 10, the light sources 142 are arranged in the same direction.
Referring to fig. 11, an intersection point of the arrangement directions of the light sources 142 is a central point of the driving circuit board 141.
In the present embodiment, the light-transmitting hole 171 is located in the plane of the focal point O of the microlens film 170, and the light-transmitting hole 171 is not overlapped with the focal point O and is far away from the backlight hole 120. Thus, the light emitted from the light source 142 enters the microlens film 170 through the light-transmitting hole 171 to be refracted, so that a parallel light beam toward the backlight hole 120 can be formed.
In this embodiment, the shape and size of the backlight module 100 are matched with the shape and size of the backlight hole 120. The backlight hole 120 is preferably a circular hole.
In this embodiment, the light guiding ring 130 and the light source 142 are both annular, preferably circular, that is, they are adapted to the backlight hole 120, preferably a circular hole.
Referring to fig. 12, the backlight module 100 further includes a light blocking film 150, and the light blocking film 150 is disposed between the backlight module 100 and the backlight unit 110. The light blocking film 150 is provided to block light of the backlight module 100 and prevent the light from being affected by the light source 142 of the backlight module 100 when the camera takes a picture.
In the display device 300 provided in this embodiment, the light guide ring 130 and the light source 142 are disposed inside the backlight hole 120, so that a problem that no light source is provided inside the backlight hole 120, and a technical problem that the brightness of the display device 300 at a position corresponding to the backlight hole 120 is relatively dark when the camera is turned off for displaying are solved.
In the above embodiment, the display device 300 may further include a light shielding adhesive 180 located between the backlight module 100 and the display panel 200.
The present application takes the second embodiment as an example for description, please refer to fig. 13.
The lower surface of the light shielding adhesive 180 is partially attached to the upper surface of the light guide ring 130, and the other part is attached to the upper surface of the upper brightness enhancement film 116 (i.e., the upper surface of the backlight module 100).
The upper surface of the light shielding adhesive 180 is attached to the lower surface of the display panel 200, so that the light shielding adhesive 180 adheres and bonds the backlight module 100 and the display panel 200 together. The light shielding adhesive 180 plays a role in connecting the backlight module 100 and the display panel 200, and can prevent light leakage from the position of the backlight hole 120, so the shape and size of the light shielding adhesive 180 are matched with those of the backlight hole 120, that is, the light shielding adhesive 180 annularly surrounds the backlight hole 120, that is, the light shielding adhesive 180 is not disposed at the position corresponding to the backlight hole 120.
In the above embodiment, the backlight unit 110 may include a reflective sheet 112, a light guide plate 113, a diffusion sheet 114, a lower brightness enhancement sheet 115, and an upper brightness enhancement sheet 116 stacked in sequence from bottom to top.
The reflector plate 112 is arranged on the back plate 111; the light guide plate 113 is disposed on the reflective sheet 112; the diffusion sheet 114 is arranged on the light guide plate 113; the lower brightness enhancement film 115 is arranged on the diffusion film 114; the upper brightness enhancement film 116 is disposed on the lower brightness enhancement film 115.
The backlight hole 120 sequentially penetrates through the back plate 111, the reflective sheet 112, the light guide plate 113, the diffusion sheet 114, the lower light-adding sheet 115, and the upper light-adding sheet 116 from bottom to top.
The diffusion sheet 114 diffuses light to provide a uniform surface light source. The lower brightness enhancement sheet 115 and the upper brightness enhancement sheet 116 may enhance the brightness of the light source. The lighting effect of the backlight unit 110 directly affects the visual effect of the backlight module 100.
In the above embodiment, the display panel 200 includes a lower polarizer 201, an array substrate 202, a color filter substrate 203, and an upper polarizer 204, which refer to fig. 13 specifically.
In this embodiment, the lower polarizer 201 is disposed on the backlight module 100; the array substrate 202 is arranged on the lower polarizer 201; the color film substrate 203 is arranged on the array substrate 202; the upper polarizer 204 is arranged on the color film substrate 203; the lower polarizer 201 and the upper polarizer 204 have through holes at positions corresponding to the backlight hole 120, and the through holes can improve the light transmittance of the display panel 200. The upper surface of the light shielding adhesive 180 is attached to the lower surface of the lower polarizer 201 to adhere and bond the backlight module 100 and the display panel 200 together.
The display device 300 can be mounted on the display panel 200 having through holes (e.g., dug, drop, notch, out-of-plane, etc.) or blind holes, thereby eliminating the problem that the through hole area or the blind hole area cannot be used for display when the display panel 200 has through holes or blind holes, and the backlight unit 110 can use a back plate 111 or a reflective film as a back surface to uniformly or effectively utilize the light emitted from the backlight unit 110.
In summary, by the arrangement of the light guiding ring 130 and the light source component 140 of the present disclosure, the backlight module 100 of the display device 300 can provide light and brightness control in the area of the backlight hole 120, so that the through holes or blind holes on the display panel 200, which are idle and cannot provide any display effect in the prior art, can have display capability again, and the image quality obtained by the camera module 400 is still maintained, thereby improving the application scene and the use experience of the terminal product, and thus having competitiveness.
The display device in this embodiment may be any product or component having a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, and a navigator.
The application provides a display device, which comprises a display panel and a backlight module. The backlight module comprises a backlight unit provided with a backlight hole; the light guide ring is arranged at the inner side of the backlight hole and comprises a light inlet surface and a light outlet surface, and the light guide ring is used for guiding the light beams entering the light guide ring to the display panel area corresponding to the backlight hole; and the light source component is used for providing a light source for the light guide ring. This application sets up a backlight hole and is in through the region that corresponds at the module of making a video recording the downthehole light ring that leads that sets up in backlight for the light source that the light source part provided can lead through light ring the display panel region that the backlight hole corresponds. When the camera in the camera module is started, the light source is closed, and when the camera in the camera module is not started, the light source is opened or closed, so that the through hole or the blind hole in the display panel can have the display capability again, and the image quality of the camera module is still maintained.
In summary, although the present application has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present application, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present application, so that the scope of the present application shall be determined by the appended claims.
Claims (17)
1. The utility model provides a display device which characterized in that, includes display panel, is located the backlight unit of display panel one side, backlight unit includes:
a backlight unit provided with a backlight hole;
the light guide ring is arranged on the inner side of the backlight hole, comprises a light inlet surface arranged far away from the display panel and a light outlet surface arranged close to the display panel, and is used for guiding light beams entering the light guide ring to the display panel area corresponding to the backlight hole;
and the light source component is used for providing a light source for the light guide ring.
2. The display device according to claim 1,
the light source component comprises a driving circuit board and at least one light source positioned on the driving circuit board, the light sources are arranged on the driving circuit board in an array manner, and the light sources are distributed around the inner side or the outer side of the backlight hole;
one side of the light source faces the light incident surface of the light guide ring.
3. The display device according to claim 2,
the plane where the light emergent surface is located is perpendicular to the plane where the light incident surface is located or forms an acute angle.
4. The display device according to claim 2,
the light guide ring also comprises a light reflecting surface, and the plane of the light reflecting surface is vertical to the plane of the light incident surface or forms an acute angle with the plane of the light incident surface.
5. The display device according to claim 2,
the light incident surface is formed by at least one Fresnel lens in the same plane in an integrated mode.
6. The display device according to claim 5,
the Fresnel lens is provided with at least one annular tooth-shaped structure which is concentrically arranged, and a convex lens structure which is surrounded by the annular tooth-shaped structure.
7. The display device according to claim 2,
the light-emitting surface is integrally formed by at least one micro-lens film on the same plane;
the plane of the light incident surface is superposed with the plane of the focal point of the micro-lens film;
the light incident surface is provided with at least one light hole, and each light hole corresponds to each micro-lens film.
8. The display device according to claim 7,
when the light holes coincide with the focal point of the micro lens film, light rays emitted by the light source are refracted by the micro lens film to form parallel light beams vertical to the light incident surface;
when the light hole deviates from the focus and is positioned on the focal plane of the micro lens film, the light rays emitted by the light source are refracted by the micro lens film to form parallel light beams forming a certain angle with the incident plane.
9. The display device according to claim 7,
the light guide assembly further comprises a metal reflecting layer, and the metal reflecting layer is arranged on one side, facing the light source, of the light incident surface of the light guide ring; the light holes are arranged on the metal reflecting layer in an array mode.
10. The display device according to claim 7,
the light source component further comprises a diffuse reflection layer, the diffuse reflection layer is arranged on the driving circuit board, and the light source is exposed on the diffuse reflection layer.
11. The display device according to claim 7,
each light hole is positioned at one side of the focus of each micro lens film corresponding to the light hole, which is far away from the center of the light guide ring.
12. The display device according to claim 2,
the light source comprises one of an LED light source or a mini LED light source.
13. The display device according to claim 1,
the display device also comprises a camera module positioned on one side of the display module, which is far away from the display panel, and the camera module corresponds to the backlight hole;
the control component is electrically connected with the camera module and the light source component;
when a camera in the camera module is started, the control part controls the light source to be closed;
when a camera in the camera module is closed, the control component controls the light source to be turned on or turned off.
14. The display device according to claim 1,
the backlight module also comprises a light barrier film, and the light barrier film is arranged between the light guide ring and the backlight unit.
15. The display device according to claim 1,
the light guide ring is made of transparent materials or matte materials.
16. The display device according to claim 1, wherein the backlight unit comprises a reflective sheet on a back plate, a light guide plate on the reflective sheet, a diffusion sheet on the light guide plate, a lower brightness enhancement sheet on the diffusion sheet, and an upper brightness enhancement sheet on the lower brightness enhancement sheet;
the backlight hole sequentially penetrates through the back plate, the reflecting sheet, the light guide plate, the diffusion sheet, the lower light intensifying sheet and the upper light intensifying sheet from bottom to top.
17. The display device according to claim 1,
the display panel includes:
the lower polarizer is arranged on the backlight module;
the array substrate is arranged on the lower polarizer;
the color film substrate is arranged on the array substrate; and
the upper polaroid is arranged on the color film substrate;
and through holes are formed in the positions, corresponding to the backlight holes, of the lower polarizer and the upper polarizer.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| US16/769,618 US11300828B2 (en) | 2019-05-10 | 2020-03-04 | Display device |
| PCT/CN2020/077700 WO2020228395A1 (en) | 2019-05-10 | 2020-03-04 | Display device |
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910387457.5A CN110161749A (en) | 2019-05-10 | 2019-05-10 | Applied to the panel device for shielding lower camera |
| CN2019103874575 | 2019-05-10 | ||
| CN201910686797.8A CN110491290A (en) | 2019-07-29 | 2019-07-29 | Backlight module and display device |
| CN2019106867978 | 2019-07-29 | ||
| CN201910693204.0A CN110456444A (en) | 2019-07-30 | 2019-07-30 | Leaded light component, backlight module and display device |
| CN2019106932040 | 2019-07-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110658582A true CN110658582A (en) | 2020-01-07 |
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| CN201921855432.5U Active CN210894768U (en) | 2019-05-10 | 2019-10-30 | Display device |
| CN201911045059.1A Pending CN110658582A (en) | 2019-05-10 | 2019-10-30 | Display device |
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| CN201921855432.5U Active CN210894768U (en) | 2019-05-10 | 2019-10-30 | Display device |
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