CN117406493A - Optical component, lamp bead assembly, backlight module and display device - Google Patents

Optical component, lamp bead assembly, backlight module and display device Download PDF

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Publication number
CN117406493A
CN117406493A CN202311323114.5A CN202311323114A CN117406493A CN 117406493 A CN117406493 A CN 117406493A CN 202311323114 A CN202311323114 A CN 202311323114A CN 117406493 A CN117406493 A CN 117406493A
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CN
China
Prior art keywords
light
light guide
optical component
main body
lens
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202311323114.5A
Other languages
Chinese (zh)
Inventor
刘静
孙雄
黎芳群
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huizhou Shiwei New Technology Co Ltd
Original Assignee
Huizhou Shiwei New Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huizhou Shiwei New Technology Co Ltd filed Critical Huizhou Shiwei New Technology Co Ltd
Priority to CN202311323114.5A priority Critical patent/CN117406493A/en
Publication of CN117406493A publication Critical patent/CN117406493A/en
Pending legal-status Critical Current

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Classifications

    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133602Direct backlight
    • G02F1/133603Direct backlight with LEDs
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00Refractors for light sources
    • F21V5/04Refractors for light sources of lens shape
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133524Light-guides, e.g. fibre-optic bundles, louvered or jalousie light-guides
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133526Lenses, e.g. microlenses or Fresnel lenses
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133602Direct backlight
    • G02F1/133606Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • G02F1/133607Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V2200/00Use of light guides, e.g. fibre optic devices, in lighting devices or systems
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00Light-generating elements of semiconductor light sources
    • F21Y2115/10Light-emitting diodes [LED]

Abstract

The embodiment of the application provides an optical component, lamp pearl subassembly, backlight unit and display device, and optical component includes: the bottom of the lens main body is close to the light source, and light emitted by the light source enters from the bottom of the lens main body; the light guide piece is arranged on the lens main body, and at least part of light rays entering the light guide piece diffuse around the light guide piece. The optical component formed by the lens main body and the light guide piece is arranged on the light source, and the light guide piece is arranged on the lens main body according to the characteristic that the maximum range of the luminous flux of the lens main body is in the area above the light source, so that most light rays emitted by the light source can be guided into the light guide piece, the propagation path of the light rays emitted by the light guide piece is changed, the luminous angle of the light source is increased, and the concentrated light rays are dispersed, so that the visual effect uniformity of the display device is improved.

Description

Optical component, lamp bead assembly, backlight module and display device
Technical Field
The application belongs to the technical field of optical components, and particularly relates to an optical component, a lamp bead assembly, a backlight module and a display device.
Background
With the technical development of the display product industry, consumers have increasingly higher sensory experience requirements for display products. For light and thin display products, the smaller the light and thin display product is, i.e. the Distance between the backlight circuit board and the diffusion plate is. Thus, even if a lens is provided on the lamp bead, the conventional lens has a small light emitting angle, which easily causes the problem that the display screen has uneven visual effects such as a lamp shadow, a dark angle, a dark frame, and the like.
Disclosure of Invention
The embodiment of the application provides an optical component, lamp pearl subassembly, backlight unit and display device, can increase the luminous angle of lamp pearl, and then reduce the display screen and appear the inhomogeneous problem of visual effect such as lamp shadow, hidden angle, hidden frame.
In a first aspect, embodiments of the present application provide an optical component comprising:
the bottom of the lens main body is close to the light source, and light emitted by the light source enters from the bottom of the lens main body;
the light guide piece is arranged on the lens main body, and at least part of light rays entering the light guide piece diffuse around the light guide piece.
Optionally, the light guide is disposed on top of the lens body.
Optionally, the light guide member is a cylinder or a cylinder-like structure.
Optionally, the light guide is vertically disposed on top of the lens body.
Optionally, the light guide member gradually contracts from an end close to the lens body to an end far from the lens body.
Optionally, the surface of the light guide member is provided with a plurality of concave holes.
Optionally, a plurality of concave holes are formed on the side surface of the light guide member.
Optionally, the opening diameters and depths of the plurality of concave holes on the side surface of the light guide member are respectively gradually reduced from one end close to the lens main body to one end far away from the lens main body.
Optionally, the concave hole is conical.
Optionally, the plurality of concave holes are arranged at intervals along the side surface of the light guide member.
Optionally, the plurality of concave holes are uniformly arranged on the side surface of the light guide member.
Optionally, a surface of the light guide facing away from the lens main body is an arc surface.
Optionally, an end of the light guide facing away from the lens main body is hemispherical.
Optionally, the top of the lens body is a cambered surface.
Optionally, the lens body is hemispherical.
Optionally, the lens body and the light guide are integrally formed.
Optionally, the optical component further includes a mounting portion, where the mounting portion is disposed at a bottom of the lens body, and the mounting portion is used for mounting the optical component.
In a second aspect, embodiments of the present application also provide a lamp bead assembly comprising an optical component as described in any one of the above.
In a third aspect, embodiments of the present application further provide a backlight module, including the lamp bead assembly as described above.
In a fourth aspect, an embodiment of the present application further provides a display device, including the backlight module described above.
In the optical component, the lamp bead assembly, the backlight module and the display device of the embodiment of the application, through setting up the optical component that the lens main part adds the light guide piece and constitutes on the light source, according to the characteristics that the biggest scope of lens main part luminous flux light-emitting angle is in light source top region, set up the light guide piece on the lens main part, can be with the leading-in light guide piece of most light that the light source sent to change the propagation path of light that comes out in the light guide piece, increase the luminous angle of light source from this, thereby disperse concentrated light, with the visual effect homogeneity of improvement display device.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings that are required to be used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained from these drawings without inventive effort to a person skilled in the art.
For a more complete understanding of the present application and the advantages thereof, reference is now made to the following descriptions taken in conjunction with the accompanying drawings. Wherein like reference numerals refer to like parts throughout the following description.
Fig. 1 is a schematic structural diagram of an optical component according to an embodiment of the present application.
Fig. 2 is a schematic structural diagram of a lamp bead assembly according to an embodiment of the present disclosure.
Fig. 3 is a schematic structural diagram of a display device according to an embodiment of the present application.
Fig. 4 is a schematic diagram of a first structure of a display device according to an embodiment of the present application.
Fig. 5 is a schematic structural diagram of a backlight module according to an embodiment of the present application.
Fig. 6 is a schematic diagram of a second structure of the display device according to the embodiment of the present application.
Fig. 7 is a schematic diagram of a third structure of a display device according to an embodiment of the present application.
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 will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
In order to increase the light emitting angle of the lamp beads or the light source and reduce the problem that the display screen has uneven visual effects such as shadows, dark corners and dark frames, the embodiment of the application provides an optical component, a lamp bead assembly, a backlight module and a display device, and the optical component, the lamp bead assembly, the backlight module and the display device are described below with reference to the accompanying drawings.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an optical component according to an embodiment of the disclosure. The present embodiment provides an optical component 23, the optical component 23 comprising a lens body 230. The lens body 230 is a refractive lens, and the lens body 230 is made of transparent material. The lens body 230 is covered on the lamp bead or the light source to diffuse the light emitted by the lamp bead or the light source, so that the light emitting angle of the lamp bead or the light source can be increased to a certain extent. In other words, the bottom of the lens body 230 is close to the light source, and the light emitted from the light source is incident from the bottom of the lens body 230.
The existing lamp beads or light sources are also provided with lens bodies. Although the lens main body has a certain effect of diffusing light, the light emitting angle of the lamp beads or the light source still does not exceed 180 degrees, and for a display product in a small OD form, uneven display pictures are easily caused, so that the visual effect of the display product is reduced.
In order to reduce the occurrence of the above, the optical component 23 provided in the embodiment of the present application includes not only the lens main body 230 but also the light guide 232. The light guide 232 is disposed on the lens body 230, and at least a portion of the light incident into the light guide 232 after the light emitted from the light source enters from the bottom of the lens body 230 is diffused around the light guide 232. The light guide 232 can deflect and emit light rays with an angle exceeding 90 degrees, so that the light emitting angle is far exceeding 180 degrees, and the brightness uniformity and visual effect uniformity of the display device are improved.
In the optical component 23 provided in this embodiment, by arranging the optical component 23 comprising the lens main body 230 and the light guide member 232 on the light source, according to the characteristic that the maximum range of the luminous flux output angle of the lens main body 230 is in the area above the light source, the light guide member 232 is arranged on the lens main body 230, and most of the light emitted by the light source can be guided into the light guide member 232, so that the propagation path of the light emitted by the light guide member 232 is changed, thereby increasing the luminous angle of the light source, and dispersing the concentrated light, so as to improve the visual uniformity of the display device.
Illustratively, the light guide 232 is disposed on top of the lens body 230. For example, the light guide 232 is a cylinder or a cylinder-like structure, and the light guide 232 is vertically disposed at the top of the lens body 230. According to the characteristic that the maximum range of the luminous flux output angle of the lens main body 230 is in the area above the light source, the light guide member 232 is arranged at the top of the lens main body 230, so that most of light rays emitted by the light source can be guided into the light guide member 232, on one hand, the height of the light rays is increased, and then the light rays are diffused, so that the luminous angle is increased; on the other hand, the concentrated light rays can be scattered, so that the visual effect uniformity of the display device is improved.
The light guide 232 gradually contracts from the end close to the lens body 230 to the end far from the lens body 230, so as to help to adjust the light path. It is understood that, since the light emitted from the light source is concentrated at the bottom of the light guide 232, in order to make more light be guided into the light guide 232 and make the angle of the light emitted from the light guide 232 be larger, that is, the emitting angle is larger than 180 °, the light guide 232 may be configured to have a shape with a large lower end and a small upper end.
For example, the inclination angle of the side wall of the light guide 232 may be selected in the range of 0 ° to 30 ° to meet the requirement of high-angle light emission.
Wherein, the side of the light guide 232 facing away from the lens column 230 is a cambered surface, for example, an end of the light guide 232 facing away from the lens column 230 is hemispherical, and the top of the hemispherical light guide 232 can uniformly diffuse light, so that the light guide 232 can be adjusted in all directions, and the uniformity and the diffusion angle of the light are improved as a whole.
Illustratively, the top of the lens body 230 is a curved surface, for example, the lens body 230 is hemispherical, so that the light emitted by the light source can be hemispherical and diffused to increase the light emitting range of the light source.
The light guide 232 is disposed in a central region of the hemispherical lens body 230, which is a relative concept defined with respect to an edge region, and for hemispherical shapes, the central region is a region extending circumferentially along an axis in a vertical direction, and the remaining portion may be referred to as an edge region. Since the lens body 230 is a refractive lens, according to the characteristic that the maximum range of the light output angle of the refractive lens is in the area above the lamp bead 221, the light guide 232 disposed in the central area of the lens body 230 can guide part of the light emitted from the lamp bead 221, so as to change the path of the part of the light, thereby increasing the overall light output angle of the lamp bead 221 and the optical component 23.
The light guide 232 is cylindrical, and the light guide 232 is disposed coaxially with the lens main body 230, and further, the front projection of the light guide 232 is located in the front projection of the lens main body 230, that is, the boundary dimension of the light guide 232 is smaller than the boundary dimension of the lens main body 230. Alternatively, the lens body 230 is hemispherical and houses a light bulb or light source, the light guide 232 is cylindrical, and the diameter of the light guide 232 is smaller than that of the lens body 230. The light guide 232 is disposed at the center above the lens body 230, so that the light emitted by the lamp beads or the light source can be guided into the light guide 232 through the lens body 230, and the concentrated light is diffused out through the light guide 232, so that the light emitted by the lamp beads can be homogenized and the light emitting angle can be increased, and finally the light emitting angle can exceed 180 degrees, thereby improving the visual uniformity of the display device.
Illustratively, the height of the light guide 232 is greater than that of the lens main body 230, so that the concentrated light can be increased to a higher position and then diverged, which is beneficial to increasing the light-emitting angle, so that the light-emitting angle is greater than 180 °, and the concentrated light can be dispersed, so that the uniformity of the light-emitting is improved.
Exemplary, the light guide 232 and the lens main body 230 are integrally formed, so that the optical component 23 can be conveniently manufactured, and compared with the case that the light guide 232 and the lens main body 230 are independently manufactured and then adhered together, the integrally formed light guide 232 and the lens main body 230 can improve the stability of connection, reduce the generation of cracks and reduce the influence on the light path. Correspondingly, the light guide 232 and the lens body 230 are made of the same material, for example, polymethyl methacrylate (Polymethyl Methacrylate, PMMA), which is a high molecular polymer, also called acrylic or organic glass, and has the advantages of high transparency, low price, easy machining and the like. Of course other transparent and high refractive index materials may be chosen, such as silica gel.
It should be noted that, a part of the light guided into the light guide 232 is directly refracted to the outside through the side wall of the light guide 232, and another part is reflected inside the light guide 232 and continuously extends upwards. In order to increase the light emitting angle of the light source, the surface of the light guide 232 is further provided with a plurality of concave holes 2320. When the light guided into the light guide 232 extends upwards and encounters the concave hole 2320, the light deflects by more than 90 degrees and exits, so that a large light emitting angle of the lamp bead or the light source is realized.
Illustratively, the walls of wells 2320 are inclined with respect to the sidewalls of light guide 232, which can help alter the propagation path of the light such that the light is deflected beyond 90 ° out.
The shape of the concave hole 2320 is conical, or a conical space is formed by surrounding the hole wall of the concave hole 2320, so that the side wall of the concave hole 2320 is a flat and smooth inclined surface, abnormal propagation and emergence of light can be reduced, and the light emergent effect of the light is improved.
For the arrangement of the plurality of concave holes 2320, for example, the plurality of concave holes 2320 are disposed on the side surface of the light guide 232, and the plurality of concave holes 2320 are uniformly arranged at intervals along the side surface of the light guide 232, and the uniform arrangement can be understood as that the interval distance between every two adjacent concave holes 2320 is equal, so as to facilitate the manufacture of the plurality of concave holes 2320.
In some embodiments, since the light guide 232 gradually contracts from one end close to the lens main body 230 to one end far away from the lens main body 230, the arrangement of the plurality of concave holes 2320 may be adapted to the shape of the light guide 232, for example, the density of the concave holes 2320 arranged at one end of the light guide 232 close to the lens main body 230 is greater than the density of the concave holes 2320 arranged at one end of the light guide 232 far away from the lens main body 230, so that the exit angles after passing through the concave holes 2320 in different areas of the light guide 232 are more uniform.
For example, the opening diameters and depths of the plurality of concave holes 2320 on the side surface of the light guide 232 may gradually decrease from the end close to the lens main body 230 to the end far from the lens main body 230, which is also set according to the gradually shrinking shape of the light guide 232 from the end close to the lens main body 230 to the end far from the lens main body 230, so as to adapt to the light emitting requirements of different areas and improve the light emitting uniformity and the light emitting angle.
Illustratively, the depth of recess 2320 is small, and the depth of recess 2320 is the dimension along the diameter of light guide 232. For example, the depth of recess 2320 is less than 10% of the diameter of light guide 232 at the location thereof. If the depth of the light emitting hole is too large, the light at the bottom of the light emitting hole can not be emitted easily, or the emission of other light is disturbed, such as light mixing occurs, so that the visual effect is affected.
The number of the concave holes 2320 is at least one, so as to improve the overall light emitting angle of the light, the number of the concave holes 2320 may be multiple, and the plurality of concave holes 2320 are arranged around the periphery of the light guide member 232, so as to realize the light path adjustment of different areas. For example, the plurality of concave holes 2320 are uniformly distributed on the light guide 232, so that uniformity of light emergent can be improved, and uniformity of visual effect of a display product can be improved.
Illustratively, the optical component 23 further includes a mounting portion 234, the mounting portion 234 being disposed at a bottom of the lens body 230, the mounting portion 234 being configured to mount the optical component 23. It will be appreciated that the mounting portion 234 protrudes from the lens body 230 to facilitate mounting and securing of the optical component 23.
The plurality of mounting portions 234 are provided, and the plurality of mounting portions 234 are spaced apart along the bottom edge of the lens body 230 to improve the stability of mounting and connection.
The mounting portion 234 and the lens main body 230 are integrally formed, so that the process can be accelerated, and cracks caused by splicing can be reduced.
Referring to fig. 1 and referring to fig. 2, fig. 2 is a schematic structural diagram of a lamp bead assembly according to an embodiment of the present application. The embodiment of the present application further provides a lamp bead assembly 22, where the lamp bead assembly 22 includes an optical component 23, and the optical component 23 may refer to fig. 1 and the above description, and will not be described herein. The lamp bead assembly 22 may further include a lamp bead 221, where the lamp bead 221 is a light source, and the optical component 23 is covered on the lamp bead 221 to adjust the light emitted by the lamp bead 221, thereby increasing the light emitting angle of the lamp bead 221 and improving the uniformity of the visual effect of the display product.
The lamp bead 221 may be disposed coaxially with the optical component 23, so as to improve uniformity of light diffusion emitted from the lamp bead 221, and further improve visual effect uniformity.
In the lamp bead assembly 22 provided by the embodiment of the application, the optical component 23 comprising the lens main body 230 and the light guide member 232 is arranged on the lamp bead 221, and the light guide member 232 is arranged above the lens main body 230 according to the characteristic that the maximum light-emitting angle range of the light flux of the lens main body 230 is in the area above the lamp bead 221, so that most of light emitted by the lamp bead 221 can be guided into the light guide member 232, and the propagation path of the light emitted by the light guide member 232 is changed, so that the light-emitting angle of the lamp bead 221 is increased, and the concentrated light is dispersed, so that the visual effect uniformity of the display device is improved.
The lamp bead 221 may be a Light-Emitting Diode (LED), and may be applied to a lighting field, or a panel lamp field, for example. The lamp beads 221 may be micro light emitting diodes (Mini LEDs) and may be applied to a liquid crystal display device as a backlight. The embodiments of the present application are described by taking the lamp bead 221 in the liquid crystal display device as an example, and should not be construed as limiting the application field of the lamp bead 221.
For example, referring to fig. 3, fig. 3 is a schematic structural diagram of a display device according to an embodiment of the present application. The embodiment of the application provides a display device 1, where the display device 1 may be a device with a display function, such as a television, a computer, a vehicle-mounted video device, and the like. The display apparatus 1 includes a housing 10 and a display device 20. The housing 10 is used for carrying the display device 20, or the housing 10 is a packaging structure of the display device 20, so as to hide the circuit of the display device 20 and the like, thereby improving the aesthetic degree of the display apparatus 1.
The display device 20 is an essential component of the display apparatus 1. The display device 20 is used for realizing screen display under a preset program for the user to watch. In the embodiments described herein, a liquid crystal display device is described using a liquid crystal solution of two sheets of polarizing material, and the liquid crystal is rearranged for imaging purposes when a current is passed through the liquid. The lcd device needs to use a backlight source, that is, a fluorescent tube to project light sources, and the light sources pass through a polarizer and then pass through the liquid crystal, so that the arrangement mode of the liquid crystal molecules changes the angle of light penetrating the liquid crystal. These rays then pass through the front colored filter and another polarizer. Therefore, the intensity and color of the light finally appearing can be controlled by changing the voltage value of the stimulated liquid crystal, and the color combination with different shades can be changed on the liquid crystal display device.
With the technical development of the display device industry, consumers have higher and higher sensory experience requirements on display products. Under the condition that the requirement of consumers on the overall visual effect uniformity of the display picture is synchronously improved, certain requirements are also on the manufacturing cost of the display device. Wherein, the display device with single light bar or double light bar number becomes a cost reducing means. The single or double light bar, i.e. for the whole display device only one or two light bars are placed as backlight. The single light bar extends along the width direction of the display device, and the two light bars are arranged at intervals along the height direction of the standing state of the display device. Therefore, the number of the lamp bars and the lamp beads can be reduced, and the manufacturing cost of the display device can be reduced.
Although the single-light bar or double-light bar scheme can meet the requirement of reducing cost, the overall visual effect uniformity of the display picture is obviously reduced, and how to improve the visual effect uniformity of the display device on the basis of low cost is a problem to be solved.
For example, referring to fig. 4, fig. 4 is a schematic diagram of a first structure of a display device according to an embodiment of the present application. The display device 20 includes a backlight module 200 and a display screen 300, the backlight module 200 provides a backlight for the display screen 300, the display screen 300 mainly includes a liquid crystal layer, an array substrate, a color film substrate, a polarizer and other components, and the backlight module 200 and the display screen 300 cooperate to realize image display.
In order to reduce the occurrence of the above-mentioned situation, the embodiments of the present application improve the lamp bead assembly 22 in the backlight module 200, and will be described below with reference to the accompanying drawings.
Referring to fig. 1 to 4 in combination with fig. 5 to 7, fig. 5 is a schematic structural diagram of a backlight module provided in an embodiment of the present application, fig. 6 is a second schematic structural diagram of a display device provided in an embodiment of the present application, and fig. 7 is a third schematic structural diagram of the display device provided in an embodiment of the present application. The backlight module 200 includes a back plate 21 and a lamp bead assembly 22. Wherein the lamp bead assembly 22 includes the lamp bead 221 and the optical member 23, which are separately described for convenience of description, and should not be construed as limiting the lamp bead 221 and the optical member 23.
The back plate 21 is used for carrying various components of the display device 20, such as a lamp bead 221, a diffusion plate, and a display screen 300.
The lamp beads 221 may be disposed on a lamp panel (not shown) which is disposed on the back plate 21. The lamp plate also can be called a circuit board, and the lamp plate is used for bearing the lamp beads 221 so as to uniformly manufacture a plurality of scattered lamp beads 221, realize the physical connection of a plurality of lamp beads 221, and simultaneously, the lamp plate can realize the electric connection of a plurality of lamp beads 221, and is realized through a circuit on the lamp plate.
It should be noted that, in the embodiment of the present application, the backlight module 200 with a single light bar is taken as an example for illustration, and the light bar is a generic term of the light panel and the plurality of light beads 221 thereon, that is, the backlight module 200 only includes one light bar, and the arrangement mode can reduce the number of light bars and reduce the manufacturing cost of the display device 20. Of course, the case of two light bars, three light bars and a small number of light bars may also reduce the manufacturing cost of the display device 20, and the embodiment of the present application is illustrated by taking a single light bar as an example, and should not be construed as limiting the number of light bars.
The number of the light bars is smaller, so that the requirement on the light emitting angle of the lamp beads 221 is higher, and the influence of the small number of the light bars on the uniformity of the picture display is compensated. However, in the related art, the light emitting angle of the lamp bead is limited, which affects the uniformity of the visual effect of the display device.
Based on this, the embodiment of the present application provides the optical member 23 on the lamp bead 221. In addition, since the lamp beads 221 have a plurality of optical components 23, the number of the optical components 23 may be at least one, and the at least one optical component 23 is used for adjusting the light emitted from the lamp beads 221, such as refracting and diverging, so that the light emitted from the lamp beads 221 can meet the screen requirement of the display device 20.
The structural composition of the optical component 23 may refer to fig. 1 and the above description, and will not be repeated here.
The backlight module 200 further includes supporting columns (not shown) for supporting the diffusion plate and the display screen 300, so as to reduce the influence of the collapse of the diffusion plate on the light propagation. Illustratively, the height of the support column is greater than the height of the optical component 23, so that the optical component 23 can also play a role in diffusing light at the top of the optical component, and the uniformity of visual effect is improved.
The backlight module 200 further includes a reflective sheet (not shown) disposed obliquely with respect to the bottom plate of the back plate 21, and the reflective sheet is used for reflecting light to improve light extraction efficiency. In the case of a single light bar, the reflective sheet is generally relatively large in span, and a collapse phenomenon is liable to occur, resulting in uneven visual effect or other visual problems. Therefore, in this embodiment, a supporting structure (not shown in the figure) is disposed between the reflective sheet and the bottom plate of the back plate 21, and the supporting structure is used for supporting the reflective sheet, so as to reduce occurrence of collapse phenomenon of the reflective sheet, and further improve uniformity of visual effect. Wherein, the supporting structure and the inclined angle looks adaptation of reflector plate of the one end that the reflector plate contacted to reduce because the protruding influence to the reflector plate reflection effect of supporting structure.
In the optical component 23, the lamp bead assembly 22, the backlight module 200 and the display device 20 provided by the embodiment of the application, the lens main body 230 and the optical component 23 formed by the light guide member 232 are arranged on the lamp beads, and the light guide member 232 is arranged above the lens main body 230 according to the characteristic that the maximum light-emitting angle range of the luminous flux of the lens main body 230 is in the area above the lamp beads, so that most light rays emitted by the lamp beads can be guided into the light guide member 232, the propagation path of the light rays emitted by the light guide member 232 is changed, the light-emitting angle of the lamp beads is increased, and the concentrated light rays are dispersed, so that the visual uniformity of the display device is improved.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.
In the description of the present application, the terms "first," "second," and the like 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, a feature defining "a first" or "a second" may explicitly or implicitly include one or more features.
The optical component, the lamp bead assembly, the backlight module and the display device provided by the embodiment of the application are described in detail, and specific examples are applied to the description of the principle and the implementation of the application, and the description of the above embodiments is only used for helping to understand the method and the core idea of the application; meanwhile, as those skilled in the art will vary in the specific embodiments and application scope according to the ideas of the present application, the contents of the present specification should not be construed as limiting the present application in summary.

Claims (20)

1. An optical component, comprising:
the bottom of the lens main body is close to the light source, and light emitted by the light source enters from the bottom of the lens main body;
the light guide piece is arranged on the lens main body, and at least part of light rays entering the light guide piece diffuse around the light guide piece.
2. The optical component of claim 1, wherein the light guide is disposed on top of the lens body.
3. An optical component as claimed in claim 1, wherein the light guide is a cylinder or cylinder-like structure.
4. An optical component as recited in claim 3, wherein the light guide is disposed vertically on top of the lens body.
5. An optical component as recited in claim 3, wherein the light guide tapers from an end proximal to the lens body to an end distal from the lens body.
6. The optical component of claim 5, wherein the light guide surface is provided with a plurality of indentations.
7. The optical component of claim 6, wherein the side of the light guide is provided with a plurality of recesses.
8. The optical component of claim 7, wherein the plurality of concave holes in the side surface of the light guide have an opening diameter and a depth that decrease gradually from an end closer to the lens body to an end farther from the lens body, respectively.
9. The optical component of claim 8, wherein the recess is tapered.
10. The optical component of claim 7, wherein the plurality of recesses are spaced along a side of the light guide.
11. The optical component of claim 10, wherein the plurality of indentations are uniformly arranged on a side of the light guide.
12. The optical component of claim 1, wherein a face of the light guide facing away from the lens body is a curved face.
13. The optical component of claim 12, wherein an end of the light guide facing away from the lens body is hemispherical.
14. The optical component of claim 1, wherein the top of the lens body is a curved surface.
15. The optical component of claim 14, wherein the lens body is hemispherical.
16. The optical component of claim 1, wherein the lens body and the light guide are integrally formed.
17. The optical component of claim 1, further comprising a mounting portion disposed at a bottom of the lens body, the mounting portion for mounting the optical component.
18. A lamp bead assembly comprising the optical component of any one of claims 1-17.
19. A backlight module comprising the lamp bead assembly of claim 18.
20. A display device comprising the backlight module of claim 19.
CN202311323114.5A 2023-10-12 2023-10-12 Optical component, lamp bead assembly, backlight module and display device Pending CN117406493A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311323114.5A CN117406493A (en) 2023-10-12 2023-10-12 Optical component, lamp bead assembly, backlight module and display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311323114.5A CN117406493A (en) 2023-10-12 2023-10-12 Optical component, lamp bead assembly, backlight module and display device

Publications (1)

Publication Number Publication Date
CN117406493A true CN117406493A (en) 2024-01-16

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311323114.5A Pending CN117406493A (en) 2023-10-12 2023-10-12 Optical component, lamp bead assembly, backlight module and display device

Country Status (1)

Country Link
CN (1) CN117406493A (en)

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