CN113031346A - Backlight module and display method of display equipment - Google Patents
Backlight module and display method of display equipment Download PDFInfo
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- CN113031346A CN113031346A CN202110326421.3A CN202110326421A CN113031346A CN 113031346 A CN113031346 A CN 113031346A CN 202110326421 A CN202110326421 A CN 202110326421A CN 113031346 A CN113031346 A CN 113031346A
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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
- G02F1/1336—Illuminating devices
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
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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
- G02F1/133524—Light-guides, e.g. fibre-optic bundles, louvered or jalousie light-guides
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- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
Abstract
The application discloses a backlight module and a display method of display equipment. The backlight module is provided with a first area and a second area which are adjacently arranged, and the first area and the second area comprise a first light guide plate, a second light guide plate, a first light source, a second light source and a first through hole; the first light guide plate is arranged in the first area; the second light guide plate is arranged in the second area; the first light source is arranged on one side of the first light guide plate, which is far away from the second light guide plate; the second light source is arranged on one side of the second light guide plate, which is far away from the first light guide plate; the first through hole penetrates through the first light guide plate and is used for accommodating a camera. The first area and the second area are respectively provided with a first light source and a second light source which are independent to provide light rays for the first area and the second area, and the light source of any one area can be selectively turned on or turned off; through closing the first light source in first region, can close the regional luminance in a poor light in top of display screen when the mode of shooing, reduce the light leak all around of first through-hole to promote the camera effect of shooing that is located first through-hole below.
Description
Technical Field
The invention relates to the technical field of display, in particular to a backlight module and a display method of display equipment.
Background
With the development of liquid crystal display technology, especially the development of full-screen technology, a backlight unit (BLU) of a display device is manufactured into a structure with a hole dug in the surface to serve as a mobile phone application of a camera placing area, and the mobile phone application is already launched to the market.
As shown in fig. 1, which is a schematic structural diagram of a conventional display device, the display device 90 includes a backlight module 91 and a display panel 92 located above the backlight module 91.
The backlight module 91 comprises a back plate 911, a reflective sheet 912, a light guide plate 913, an optical film group 914, frame glue 915 and a square shading glue 916, wherein the back plate 911 is bent to form a through hole 917, the frame glue 915 is attached to one side of the back plate 911 away from the through hole 917 and arranged around the through hole 917, the lower surface part of the square shading glue 916 is attached to the upper surface of the frame glue 915, and the other part of the square shading glue is attached to the upper surface of the optical film group 914 to play a role in shading. The display panel 92 includes a lower polarizer 921, an array substrate 922, a color filter substrate 923 and an upper polarizer 924. Specifically, the lower polarizer 921 is disposed on the backlight module 91; the array substrate 922 is arranged on the lower polarizer 921; the color film substrate 923 is arranged on the array substrate 922; the upper polarizer 924 is arranged on the color film substrate 923; the lower polarizer 921 and the upper polarizer 924 have transparent holes or transparent areas at positions corresponding to the through holes 917.
However, no light source is provided inside the through hole 917 in fig. 1, and the through hole 917 only functions as a camera below and realizes a channel for transmitting and receiving ambient light. When displayed, the brightness in the vicinity of the through hole 917 is low, and the display is not uniform.
Disclosure of Invention
The invention aims to provide a backlight module and a display method of display equipment, which are used for solving the technical problems that no light source provides brightness at the inner side of a through hole of the conventional backlight module, the brightness near the through hole is low during display, and the picture display is not uniform.
In order to achieve the above object, an embodiment of the present invention provides a backlight module, which includes a first region and a second region disposed adjacent to each other, the backlight module including a first light guide plate, a second light guide plate, a first light source, a second light source, and a first through hole; the first light guide plate is arranged in the first area; the second light guide plate is arranged in the second area and is adjacent to the first light guide plate in the same layer; the first light source is arranged on one side, away from the second light guide plate, of the first light guide plate; the second light source is arranged on one side, away from the first light guide plate, of the second light guide plate; the first through hole penetrates through the first light guide plate and is used for accommodating a camera.
In an embodiment of the present invention, the backlight module further includes: and the reflecting layer is arranged between the second light guide plate and the first light guide plate.
In an embodiment of the backlight module, the reflective layer is disposed on an outer sidewall of the second light guide plate facing the first light guide plate; or the reflecting layer is arranged on the outer side wall of the first light guide plate facing the second light guide plate.
In an embodiment of the backlight module of the invention, the reflective layer is any one of gray, black or silver; the reflecting layer is manufactured in an evaporation mode.
In an embodiment of the backlight module, the first area is any one of a rectangle, a rounded rectangle, a triangle, a circle and an ellipse; the second area is positioned on one side of the first area or arranged around at least two sides of the first area.
In an embodiment of the backlight module, the first light guide plate, the second light guide plate, the first light source and the second light source are disposed on the same layer, and the first light guide plate and the second light guide plate have the same thickness.
In an embodiment of the backlight module of the invention, the first light guide plate and the second light guide plate are made of any one of polycarbonate and acrylic; a gap is formed between the first light guide plate and the second light guide plate and used for providing a containing space for the first light guide plate and the second light guide plate after being heated and expanded.
In an embodiment of the present invention, the backlight module further includes a third light source, and the third light source is disposed corresponding to the first through hole and is disposed near the camera; the first light source, the second light source and the third light source adopt any one of light-emitting diode light sources or chip-on-board light sources.
In an embodiment of the present invention, the backlight module further includes an optical film set and a second through hole; the optical film set is arranged on the first light guide plate and the second light guide plate and is positioned in the first area and the second area; the second through hole penetrates through the optical diaphragm group and is arranged corresponding to the first through hole; the optical film group comprises a diffusion sheet, a lower prism sheet and an upper prism sheet; specifically, the diffusion sheet is arranged on the light guide plate, the lower prism sheet is arranged on the diffusion sheet, and the upper prism sheet is arranged on the lower prism sheet.
In an embodiment of the present invention, the backlight module further includes a back plate, the back plate is provided with a receiving groove, and the receiving groove is disposed corresponding to the first area and the second area; the first light guide plate and the second light guide plate are arranged in the accommodating groove.
The invention also provides a display method of a display device, the display device comprises the backlight module, and the display method comprises the following steps:
in the photographing mode, the first light source is turned off, the second light source is turned on or turned off, and the camera acquires external light through the first through hole to finish photographing; and
and a display mode control step of turning on the first light source and the second light source in a display mode, wherein the first light guide plate and the second light guide plate are used for respectively transmitting light rays of the first light source and the second light source to provide display backlight.
In an embodiment of the display method of the display device, the backlight module further includes a third light source, and the third light source is disposed corresponding to the first through hole and on one side of the camera; in a display mode, the third light source is turned on to provide light to the first via region.
The backlight module is divided into a first area and a second area which are respectively positioned above and below the display screen, the first through hole of the backlight module is positioned in the first area above the display screen, the first area and the second area are respectively provided with a first light source and a second light source which are independent to provide light rays for the first area and the second area, and the light sources in any area can be selectively turned on or turned off; through closing the first light source in first region, can close the regional luminance in a poor light in top of display screen when the mode of shooing, reduce the light leak all around of first through-hole to promote the camera effect of shooing that is located first through-hole below.
Drawings
The technical solution and other advantages of the present application will be presented in the following detailed description of specific embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a conventional display device.
Fig. 2 is a schematic plan view of a backlight module provided in embodiment 1 of the present application.
Fig. 3 is a schematic cross-sectional structure diagram of a display device provided in an embodiment of the present application.
Fig. 4 is an exploded view of a portion of a backlight module provided in embodiment 1 of the present application.
Fig. 5 is a schematic plan view illustrating a backlight module provided in embodiment 2 of the present application.
Fig. 6 is a schematic plan view of another backlight module provided in embodiment 2 of the present application.
Fig. 7 is a flowchart of a display method of a display device provided in an embodiment of the present application.
The components in the figure are identified as follows:
a first light guide plate 1, a second light guide plate 2, a first light source 3,
a second light source 4, a light-reflecting layer 5, a third light source 6,
an optical diaphragm group 7, a first through hole 11, a second through hole 12,
a back plate 8, a backlight module 10, a camera 20,
the display screen 30, the flexible circuit boards 31, 41, the diffusion sheet 71,
the lower prism sheet 72, the upper prism sheet 73, the reflective sheet 81,
the receiving groove 82, the display device 100, the first region 101,
a second region 102.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
Referring to fig. 3, in the embodiment of the present application, a display apparatus 100 is provided, where the display apparatus 100 includes a backlight module 10, a camera 20 located below the backlight module 10, and a display screen 30 located above the backlight module 10. The backlight module 10 is provided with a first area 101 and a second area 102 which are adjacently arranged.
Example 1
Referring to fig. 2 to 4, a backlight module 10 is provided in embodiment 1 of the present application. The backlight module 10 includes a first light guide plate 1, a second light guide plate 2, a first light source 3, a second light source 4, and a first through hole 11; specifically, the first light guide plate 1 is disposed in the first region 101; the second light guide plate 2 is disposed in the second region 102 and is adjacent to the first light guide plate 1 in the same layer; the first light source 3 is arranged on one side of the first light guide plate 1 departing from the second light guide plate 2; the second light source 4 is arranged on one side of the second light guide plate 2, which is far away from the first light guide plate 1; the first through hole 11 penetrates through the first light guide plate 1, and is used for accommodating a camera 20 and providing a receiving and transmitting channel of ambient light.
The first through hole 11 is arranged corresponding to the camera 20, and can realize a photographing function, so that the first area 101 provided with the first through hole 11 is a photographing/display area, and the second area 102 is a display area. Because the first area 101 and the second area 102 are separately arranged, the first area 101 and the second area 102 are provided with the independent first light source 3 and the independent second light source 4 for providing light, and the light source of any one area can be selectively turned on or off. Therefore, the picture display of the second area 102 can be not influenced while the first area 101 takes a picture. When taking a picture, the backlight brightness of the upper area of the display screen 30 can be turned off by turning off the first light source 3 of the first area 101, and the light leakage around the first through hole 11 is reduced, so that the picture taking effect of the camera 20 located below the first through hole 11 is improved.
Specifically, in the photographing mode, the first light source 3 is turned off, the second light source 4 is turned on or turned off, and the camera 20 obtains external light through the first through hole 11 to complete photographing; in the display mode, the first light source 3 and the second light source 4 are turned on, and the first light guide plate 1 and the second light guide plate 2 are used for transmitting light rays of the first light source 3 and the second light source 4 respectively to provide backlight for display.
In this embodiment, the backlight module 10 further includes a reflective layer 5, and the reflective layer 5 is disposed between the second light guide plate 2 and the first light guide plate 1. That is, the light reflecting layer 5 is disposed between the first region 101 and the second region 102.
In this embodiment, the reflective layer 5 is disposed independently of the second light guide plate 2 and the first light guide plate 1; or the reflecting layer 5 is arranged on the outer side wall of the second light guide plate 2 facing the first light guide plate 1; or the light reflecting layer 5 is disposed on an outer side wall of the first light guide plate 1 facing the second light guide plate 2.
In this embodiment, the light-reflecting layer 5 is any one of gray, black or silver; the reflecting layer 5 is manufactured in an evaporation mode. The light reflecting layer 5 is used for reflecting light, or the light reflecting layer 5 also absorbs light while reflecting light so as to avoid mutual interference of backlight between the first region 101 and the second region 102.
The greatest advantage of the present embodiment using the two-partitioned backlight of the first area 101 and the second area 102 is: on the premise of not influencing the display effect around the first through hole 11, the light rays of the first area 101 and the second area 102 are prevented from entering the first through hole 11 of the first area 101 to influence the shooting quality; if there is no first region 101 independently controlled from the second region 102, when the module is in the shooting state, the light rays of the first region 101 and the second region 102 of the backlight module 10 easily leak into the first through hole 11, so that the shooting picture becomes white and frosted, and the shooting effect of the camera 20 is affected. Meanwhile, by matching with the functions of reflecting light and absorbing light of the light reflecting layer 5, the mutual influence between the light rays of the first area 101 and the second area 102 is completely blocked, and the first area 101 and the second area 102 which independently provide the light rays are formed.
In this embodiment, the first region 101 is rectangular; the second region 102 is located at one side of the first region 101; the edges of the first region 101 and the second region 102 are flush and arranged in the same layer in an arrangement mode or a splicing mode. Wherein the area of the second region 102 is larger than that of the first region 101, and the total area formed by the interconnection of the first region 101 and the second region 102 is rectangular or rounded rectangle.
In this embodiment, the first light guide plate 1, the second light guide plate 2, the first light source 3 and the second light source 4 are disposed on the same layer, and the first light guide plate 1 and the second light guide plate 2 have the same thickness.
In this embodiment, the first light guide plate 1 and the second light guide plate 2 are made of any one of polycarbonate and acrylic; a gap is formed between the first light guide plate 1 and the second light guide plate 2 to provide a receiving space for the first light guide plate 1 and the second light guide plate 2 after being heated and expanded. The gap is more than or equal to 0.05mm, and the specific size is determined according to the overall length and shrinkage rate of the material. The first light guide plate 1 and the second light guide plate 2 may be made of the same material or different materials, so as not to affect the display effect and reliability.
As shown in fig. 3, in this embodiment, the backlight module 10 further includes a third light source 6, and the third light source 6 is disposed corresponding to the first through hole 11 and is disposed at a side close to the camera 20; the first light source 3, the second light source 4, and the third light source 6 adopt any one of a light emitting diode light source or a chip on board light source (COB light source). The color block specifications of the first light source 3 and the second light source 4 are consistent as much as possible so as to keep the same color point, reduce the color difference between the first area 101 and the second area 102 and enable the display colors of the two areas to be consistent; however, when the chip-on-board light source (COB light source) is used for the first and second light sources 3 and 4, the number of LEDs or chips (chips) may be different because the areas of the two regions are different. The number of LEDs required to ensure that the LEDs operate at the same operating current also varies when the same brightness is provided. The area of small area requires a smaller number of LEDs. That is, the actual light emission luminance and the actual display color of the first region 101 and the second region 102 are the same. The first light source 3 and the second light source 4 preferably form an external circuit by binding flexible circuit boards 31 and 41.
In this embodiment, since the first through hole 11 for accommodating the camera 20 is located in the upper first region 101, in order to control the width of the upper frame, it is preferable that the first light source 3 is a chip-on-board light source (COB light source). In order to improve the image display effect and avoid dark color in the area of the first through hole 11, the third light sources 6 are preferably arranged annularly around the first through hole 11 or the camera 20, and of course, the third light sources 6 may also be arranged in an array; in the display mode, the third light source 6 is turned on to provide light to the first through hole 11 region. The third light source 6 is controlled independently of the second light source 4. Or the third light source 6 and the second light source 4, the first light source 3 are controlled independently of each other.
In this embodiment, the backlight module 10 further includes an optical film group 7 and a reflective sheet 81; the optical film group 7 is disposed on the first light guide plate 1 and the second light guide plate 2 and located in the first region 101 and the second region 102, that is, the optical film group 7 covers a seam between the first light guide plate 1 and the second light guide plate 2; the optical diaphragm group 7 is provided with a second through hole 12 which penetrates through the optical diaphragm group 7 and is arranged corresponding to the first through hole 11; wherein, the optical film group 7 comprises a diffusion sheet 71, a lower prism sheet 72 and an upper prism sheet 73; specifically, the diffusion sheet 71 is disposed on the light guide plate, the lower prism sheet 72 is disposed on the diffusion sheet 71, and the upper prism sheet 73 is disposed on the lower prism sheet 72. If necessary, one or more diffusion sheets 71 or prism sheets 72 may be added on the basis of conventional film matching to improve the light-homogenizing effect and improve the transition phenomenon of the splicing seam, that is, the number of the diffusion sheets 71, the lower prism sheets 72 and the upper prism sheets 73 in the optical film group 7 may be multiple, or the optical film group 7 may be multiple.
In this embodiment, the backlight module 10 further includes a back plate 8, the back plate 8 is provided with a containing groove 82, and the containing groove is arranged corresponding to the first area 101 and the second area 102; the first light guide plate 1 and the second light guide plate 2 are disposed in the receiving groove 82. The back plate 8 of metal material is preferably adopted in this embodiment, so as to have a more stable structure for clamping the first light guide plate 1 and the second light guide plate 2; the reflective sheet 81 is disposed on the back plate 8 to reflect light back to the first light guide plate 1 and the second light guide plate 2.
Example 2
As shown in fig. 5 and 6, embodiment 2 of the present invention includes most of the technical features of embodiment 1, and is different from embodiment 2 in that the first region 101 occupies a smaller area. The first region 101 may be any one of a rectangle, a rounded rectangle, a triangle, a circle, and an ellipse; in this embodiment, the first region 101 is preferably a rectangle with rounded corners. The second region 102 is disposed around at least two sides of the first region 101, that is, the first region 101 and the second region 102 are spliced to form a complete rounded rectangle.
Due to the functions of reflecting light and absorbing light of the reflecting layer 5, the area of the first region 101 can be smaller, the area of the second region 102 for displaying pictures is larger when the pictures are taken, and the picture display area is effectively increased. Wherein the second area 102 is adapted to the first area 101, and the total area formed by the interconnection of the first area 101 and the second area 102 is a rectangle or a rounded rectangle. Fig. 4 is a schematic exploded view of a part of the backlight module 10 according to this embodiment.
When the first region 101 where the first through hole 11 is located at a corner of the backlight module 10, the first light source 3 may be disposed on an upper side or a side of the first region 101. In fig. 5, the first light source 3 is provided on the left side of the first region 101. In fig. 6, the first region 101 is located at the upper left corner of the backlight module 10, and the first light source 3 is disposed on the upper side of the first region 101. Similarly, if the first region 101 is located at the right upper corner of the backlight module 10, the first light source 3 is disposed on the right side of the first region 101.
From the viewpoint of looking down the light emitting surface of the backlight module 10, the light reflecting layer 5 in embodiment 2 is L-shaped, and the light reflecting layer 5 in embodiment 1 is linear or in-line.
Referring to fig. 7 and fig. 3, the present invention further provides a display method of a display apparatus, where the display apparatus 100 includes the backlight module 10, the camera 20 and the display screen 30, and as shown in fig. 7, the display method includes the steps of:
s1, a photographing mode control step, in the photographing mode, the first light source 3 is turned off, the second light source 4 is turned on or turned off, and the camera 20 obtains external light through the first through hole 11 to complete photographing; and
s2, a display mode control step, in which the first light source 3 and the second light source 4 are turned on in the display mode, and the first light guide plate 1 and the second light guide plate 2 are used for transmitting the light of the first light source 3 and the light of the second light source 4 to provide a display backlight.
In the display method of the display device 100, the backlight module 10 further includes a third light source 6, and the third light source 6 is disposed corresponding to the first through hole 11 and is disposed at a side close to the camera 20; in the display mode, the third light source 6 is turned on to provide light to the first through hole 11 region.
The backlight module is divided into a first area and a second area which are respectively positioned above and below the display screen, the first through hole of the backlight module is positioned in the first area above the display screen, the first area and the second area are respectively provided with a first light source and a second light source which are independent to provide light rays for the first area and the second area, and the light sources in any area can be selectively turned on or turned off; through closing the first light source in first region, can close the regional luminance in a poor light in top of display screen when the mode of shooing, reduce the light leak all around of first through-hole to promote the camera effect of shooing that is located first through-hole below.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The backlight module provided by the embodiment of the present application is described in detail above, and the principle and the implementation of the present application are explained in the present application by applying specific examples, and the description of the above embodiment is only used to help understanding the technical scheme and the core idea of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.
Claims (10)
1. A backlight module is characterized in that a first area and a second area which are adjacently arranged are arranged, and the backlight module comprises:
the first light guide plate is arranged in the first area;
the second light guide plate is arranged in the second area and is adjacent to the first light guide plate in the same layer;
the first light source is arranged on one side, away from the second light guide plate, of the first light guide plate;
the second light source is arranged on one side, away from the first light guide plate, of the second light guide plate;
the first through hole penetrates through the first light guide plate and is used for accommodating a camera.
2. The backlight module of claim 1, further comprising:
and the reflecting layer is arranged between the second light guide plate and the first light guide plate.
3. The backlight module according to claim 2, wherein the light reflecting layer is disposed on an outer sidewall of the second light guide plate facing the first light guide plate; or the reflecting layer is arranged on the outer side wall of the first light guide plate facing the second light guide plate.
4. The backlight module according to claim 2, wherein the light reflecting layer is any one of gray, black or silver; the reflecting layer is manufactured in an evaporation mode.
5. The backlight module as claimed in claim 1, wherein the first light guide plate, the second light guide plate, the first light source and the second light source are disposed on the same layer and have the same thickness.
6. The backlight module according to claim 1,
the first light guide plate and the second light guide plate are made of any one of polycarbonate or acrylic;
a gap is formed between the first light guide plate and the second light guide plate and used for providing a containing space for the first light guide plate and the second light guide plate after being heated and expanded.
7. The backlight module according to claim 1, further comprising a third light source disposed corresponding to the first through hole and near the camera;
the first light source, the second light source and the third light source adopt any one of light-emitting diode light sources or chip-on-board light sources.
8. The backlight module of claim 1, further comprising:
the optical diaphragm group is arranged on the first light guide plate and the second light guide plate and is positioned in the first area and the second area; and
the second through hole penetrates through the optical diaphragm group and is arranged corresponding to the first through hole;
wherein the optical film group comprises:
the diffusion sheet is arranged on the light guide plate;
the lower prism sheet is arranged on the diffusion sheet; and
and the upper prism sheet is arranged on the lower prism sheet.
9. The backlight module of claim 1, further comprising:
the back plate is provided with a containing groove, and the containing groove is arranged corresponding to the first area and the second area;
the first light guide plate and the second light guide plate are arranged in the accommodating groove.
10. A display method of a display device, the display device comprising the backlight module of claim 1, the display method comprising the steps of:
in the photographing mode, the first light source is turned off, the second light source is turned on or turned off, and the camera acquires external light through the first through hole to finish photographing; and
and a display mode control step of turning on the first light source and the second light source in a display mode, wherein the first light guide plate and the second light guide plate are used for respectively transmitting light rays of the first light source and the second light source to provide display backlight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110326421.3A CN113031346B (en) | 2021-03-26 | 2021-03-26 | Backlight module and display method of display equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110326421.3A CN113031346B (en) | 2021-03-26 | 2021-03-26 | Backlight module and display method of display equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113031346A true CN113031346A (en) | 2021-06-25 |
| CN113031346B CN113031346B (en) | 2022-05-31 |
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| CN202110326421.3A Active CN113031346B (en) | 2021-03-26 | 2021-03-26 | Backlight module and display method of display equipment |
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| CN113031346B (en) | 2022-05-31 |
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