CN219065943U - Backlight module and display with light guide plate capable of guiding and positioning - Google Patents
Backlight module and display with light guide plate capable of guiding and positioning Download PDFInfo
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- CN219065943U CN219065943U CN202320064229.6U CN202320064229U CN219065943U CN 219065943 U CN219065943 U CN 219065943U CN 202320064229 U CN202320064229 U CN 202320064229U CN 219065943 U CN219065943 U CN 219065943U
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- 238000004378 air conditioning Methods 0.000 claims description 3
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- 238000013461 design Methods 0.000 abstract description 14
- 238000004519 manufacturing process Methods 0.000 description 11
- 239000000463 material Substances 0.000 description 9
- 230000003287 optical effect Effects 0.000 description 8
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- 239000002390 adhesive tape Substances 0.000 description 5
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S2/00—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
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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
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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
- G02F1/015—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 semiconductor elements having potential barriers, e.g. having a PN or PIN junction
- G02F1/025—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 semiconductor elements having potential barriers, e.g. having a PN or PIN junction in an optical waveguide structure
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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
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Engineering & Computer Science (AREA)
- Optics & Photonics (AREA)
- Theoretical Computer Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Planar Illumination Modules (AREA)
- Push-Button Switches (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The utility model relates to a backlight module and a display, wherein the backlight module and the display can be positioned by guiding a light guide plate. The backlight module comprises a frame, a light bar, at least one positioning piece and a light guide plate, wherein the frame comprises a bottom frame and side walls which are connected, the light bar is arranged on the side walls, the positioning piece is arranged on the bottom frame and is provided with a first assembly part, the light guide plate is arranged in the frame, at least one second assembly part corresponding to the first assembly part of the positioning piece is arranged on one side facing the positioning piece, the light guide plate is combined with the first assembly part along the assembly direction by the second assembly part and is pushed against and moves towards the side walls along the positioning direction, and the second assembly part of the light guide plate is arranged on one side facing the positioning piece and is combined with the first assembly part along the assembly direction, so that the width of the light guide plate in the positioning direction is not influenced, the light emitting area of the backlight module is not influenced, and the design of a narrow frame is facilitated.
Description
The present application claims priority from chinese patent application No. 202210638953.5 entitled "backlight module with light guide plate capable of guiding and positioning and display", filed on 8/6/2022, the entire contents of which are incorporated herein by reference.
Technical Field
The present utility model relates to a backlight module, and more particularly to a backlight module with a light guide plate and a display using the same.
Background
As shown in fig. 9, the present backlight module comprises a frame 90, a light guide plate 91 and a light bar 92, wherein the light guide plate 91 is disposed on the frame 90, the light bar 92 is disposed on one side of the frame 90 and adjacent to the light guide plate 91, and the light bar 92 can project light on the light incident side of the light guide plate 91, so that the light guide plate 91 emits light toward the other side opposite to the frame 90.
In order to position the light guide plate 91 in the frame 90, a plurality of elastic positioning members 93 are disposed on the other side of the frame 90 away from the light bar 92, the positioning members 93 comprise a base 931 and a pushing portion 932 which are connected, the base 931 is adhered to the frame 90 and is disposed below the light guide plate 91, the pushing portion 932 is connected to the base 931 to make the positioning members 93 have an L shape, and the pushing portion 932 contacts the side wall of the frame 90, and when the light guide plate 91 is assembled, the other side of the light guide plate 91 opposite to the light incident side contacts and presses the pushing portion 932, thereby the light incident side of the light guide plate 91 contacts the light bar 92 by the pushing force of the elastic recovery of the pushing portion 932 to position the light guide plate 91.
However, the pushing portion 932 of the positioning member 93 needs to abut against the side wall of the frame 90 and the light guide plate 91 to generate a pushing force for positioning the light guide plate 91, and the width of the pushing portion 932 may limit the width of the light guide plate 91, which results in a reduced light emitting area of the backlight module, which is not beneficial to the design of the narrow frame, and there is a risk that the light guide plate 91 will be propped by the pushing portion 932 of the positioning member 93, so there is still room for improvement. The design is also susceptible to processing and assembly, and therefore has relatively poor accuracy. The adhesive tape is used for attaching and fixing during assembly, so that the reworkability of the parts is poor. In summary, the existing backlight module has to be limited by additional materials on the limiting and fixing structure of the light guide plate, and a plurality of front-end stations are added for the matching assembly, which not only affects the assembly time, but also increases the manufacturing cost.
Disclosure of Invention
The present utility model is directed to a backlight module with a light guide plate for guiding and positioning, so as to improve the problem that the design of the positioning structure of the light guide plate of the present backlight module affects the width of the light guide plate, resulting in the reduction of the light emitting area of the present backlight module and being unfavorable for the design of a narrow frame.
In order to achieve the aforementioned objective, the backlight module with the light guide plate of the present utility model comprises:
a frame comprising a bottom frame and side walls connected;
a light bar arranged on the side wall;
at least one positioning piece, which is arranged on the bottom frame and is provided with a first assembling part; a kind of electronic device with high-pressure air-conditioning system
The light guide plate is arranged in the frame and is positioned above the positioning piece, at least one second assembly part is arranged on one side facing the positioning piece, the position of the second assembly part corresponds to the first assembly part of the positioning piece, and when the second assembly part is combined with the first assembly part corresponding to the position along the assembly direction, the light guide plate can be pushed to move towards the side wall along the positioning direction.
In the backlight module of the utility model, the light guide plate is positioned above the positioning piece, and is combined with the first assembly part of the positioning piece along the assembly direction and pushed to move towards the side wall along the positioning direction, because the positioning piece is arranged on the bottom frame of the frame, and the second assembly part of the light guide plate is arranged on one side towards the positioning piece, and the second assembly part is combined with the first assembly part along the assembly direction to limit, the light guide plate does not need to be further assisted by other elastic rubber bodies for positioning, the material cost is reduced, the width of the light guide plate in the positioning direction is not influenced, the light emitting area of the backlight module is not influenced, the design of a narrow frame is facilitated, the light guide plate can simultaneously meet the requirements of fixing and limiting, the risk that the light guide plate is propped by the positioning piece is improved, the positioning piece is not fixed by using an adhesive tape, the material cost and the material loss caused by reworking can be reduced, and the used parts are shorter in time, and are not easy to be influenced by manufacturing and assembling.
Drawings
For a more complete understanding of the embodiments and advantages thereof, reference is now made to the following descriptions taken in conjunction with the accompanying drawings.
Fig. 1 is a schematic top plan view of a backlight module with a light guide plate capable of guiding and positioning according to the present utility model.
Fig. 2 is a partially enlarged top plan view of a backlight module with a light guide plate capable of guiding and positioning according to the present utility model.
Fig. 3 is a schematic side view of a backlight module with a light guide plate capable of guiding and positioning according to the present utility model.
Fig. 4 is a schematic view of section A-A of fig. 2.
Fig. 5 is a schematic diagram illustrating a combination operation of a second assembly portion of a light guide plate and a first assembly portion of a positioning member of a backlight module with the light guide plate capable of guiding and positioning according to the present utility model.
Fig. 6 is a schematic diagram of a first assembly portion of a positioning member of a backlight module capable of guiding and positioning a light guide plate pushing against a second assembly portion of the light guide plate.
Fig. 7 is a partially enlarged schematic side sectional view of a backlight module with a reflector for guiding and positioning a light guide plate according to the present utility model.
Fig. 8 is a partially enlarged schematic side cross-sectional view of a display of the present utility model.
Fig. 9 is a schematic side sectional view of a conventional backlight module.
Detailed Description
Referring to fig. 1 to 3, a backlight module with a light guide plate capable of guiding and positioning according to a preferred embodiment of the present utility model includes a frame 10, a light bar 20, at least one positioning member 30 and a light guide plate 40.
As shown in fig. 3 and 4, the frame 10 includes a bottom frame 11 and side walls 12 connected.
As shown in fig. 1 to 4, the light bar 20 is disposed on the side wall 12.
As shown in fig. 1 to 4, the positioning member 30 is provided on the bottom frame 11 and has a first assembling portion 31.
As shown in fig. 1 to fig. 4, the light guide plate 40 is disposed in the frame 10 and above the positioning member 30, and at least one second assembly portion 41 is disposed on a side facing the positioning member 30, and the position of the second assembly portion 41 corresponds to the first assembly portion 31 of the positioning member 30, and as shown in fig. 5 and fig. 6, when the second assembly portion 41 is combined with the first assembly portion 31 corresponding to the position along the assembly direction D1, the light guide plate 40 is pushed against and moves toward the sidewall 12 along the positioning direction D2.
Because the positioning piece 30 is disposed on the bottom frame 11 of the frame 10, the light guide plate 40 is disposed above the positioning piece 30, and the second assembly portion 41 is formed on one side of the light guide plate 40 facing the bottom frame 11, and the second assembly portion 41 is combined with the first assembly portion 31 along the assembly direction D1 to limit the width of the light guide plate 40 in the positioning direction D2, so that the light guide plate 40 is not limited by the positioning piece 30, and the light guide plate 40 does not need to be further positioned with the aid of other elastic rubber bodies, which not only can reduce the material cost, but also does not affect the light emitting area of the light emitting surface 401 of the other surface of the light guide plate 40 opposite to the bottom frame 11, which is beneficial to the narrow frame design of the backlight module, so that the light guide plate 40 can simultaneously achieve the requirements of fixing and limiting, the risk that the light guide plate 40 is supported by the positioning piece 30 is improved, and the positioning piece 30 does not need to be fixed with adhesive tape, and the material loss caused by reworking can be reduced. In addition, since the side edge of the light guide plate 40 does not need to be provided with a positioning structure, the side edge of the light guide plate 40 can be kept flat, and the influence of the optical taste of the backlight module can be avoided.
Furthermore, the positioning member 30 is made of a compressible elastic material, when the second assembly portion 41 is combined with the first assembly portion 31 corresponding to the position along the assembly direction D1, the positioning member 30 is compressed, and the elastic restoring force of the positioning member 30 pushes against the second assembly portion 41, so that the light guide plate 40 moves towards the side wall 12 along the positioning direction D2, and by virtue of the design that the positioning member 30 is made of an elastic material, the pushing force of the first assembly portion 31 pushing against the second assembly portion 41 can be increased, thereby improving the combination stability. In this embodiment, the assembling direction D1 and the positioning direction D2 are perpendicular to each other, but in other embodiments, the assembling direction D1 and the positioning direction D2 may be not perpendicular to each other or parallel to each other, so the disclosure is not limited to this embodiment.
In the preferred embodiment of the present utility model, as shown in fig. 5, the first assembling portion 31 of the positioning member 30 is concave, the second assembling portion 41 of the light guide plate 40 is columnar, and the second assembling portion 41 can extend into the first assembling portion 31 corresponding to the position, so as to improve the stability of the combination of the first assembling portion 31 and the second assembling portion 41, and when the backlight module is affected by an external force such as impact, and the light guide plate 40 is slightly separated from the positioning member 30, the positioning member 30 is prevented from lifting the light guide plate 40 by the cooperation of the concave and convex holes of the first assembling portion 31 and the second assembling portion 41, so as to reduce the risk of separating the positioning member 30 from the light guide plate 40.
As shown in fig. 5, the distance from the center of the first assembly portion 31 to the side wall 12 along the positioning direction D2 is defined as a first distance L1, the distance from the center of the second assembly portion 41 corresponding to the position of the first assembly portion 31 to the side wall 12 along the positioning direction D2 is defined as a second distance L2, the first distance L1 is smaller than or equal to the second distance L2, when the second assembly portion 41 of the light guide plate 40 extends into the first assembly portion 31 of the positioning member 30 corresponding to the position along the assembly direction D1, during the assembly operation of the light guide plate 40, since the first distance L1 is smaller than the second distance L2, that is, the concave hole of the first assembly portion 31 of the positioning member 30 and the convex column of the second assembly portion 41 of the light guide plate 40 are in a design that the axis is dislocated, as shown in fig. 6, the elastic deformation characteristic of the positioning member 30 can be utilized, so that the positioning member 30 is pressed and deformed by the second assembly portion 41, and when the deformation returns, a pushing force is generated to push the second assembly portion 41, so that the light guide plate 40 moves along the positioning direction D1, and when the first distance L1 is smaller than the second distance L2, and the second assembly portion 41 is not required, and the distance L is equal to the position of the second assembly portion 41 is required, and the first distance is not shown by the second assembly portion 41. Therefore, the worker does not need to align the second assembly portion 41 of the light guide plate 40 with the first assembly portion 31 of the positioning member 30 at the same axis when assembling, which can reduce the offset error caused by the assembling of the worker. If the first assembly portion 31 and the second assembly portion 41 are tightly fitted and fixed, that is, the first assembly portion 31 and the second assembly portion 41 have corresponding contours, the combination stability can be further improved.
Preferably, the first assembling portion 31 is in a shape of a long concave hole, more manufacturing and assembling margin can be reserved by the design of the long concave hole, so that convenience in manufacturing and assembling the light guide plate 40 and the positioning member 30 can be improved, workers can conveniently identify the direction of the positioning member 30, and no additional mark is required to be designed on the positioning member 30, so that convenience in manufacturing can be improved, wherein the design that the long side of the first assembling portion 31 is parallel to the side wall 12 can increase the area of the first assembling portion 31 pushing against the second assembling portion 41 so as to improve pushing stability, and in addition, the design that the long side of the first assembling portion 31 is parallel to the light bar 20 can ensure that the extending direction of the first assembling portion 31 is parallel to the light bar 20 and can not exceed a non-visible area of the panel in the direction perpendicular to the light bar 20, so that the second assembling portion 41 of the light guide plate 40 can be prevented from influencing the main light emitting area of the light guide plate 40, and the optical taste of the backlight module can be prevented from being influenced.
In addition, the side wall 12 is formed above the edge of the bottom frame 11 and includes at least one side edge, the side edge is located on at least one side of the bottom frame 11 or surrounds the bottom frame 11, when the light guide plate 40 is pushed against and moves towards the side wall 12 along the positioning direction D2, the light bar 20 is disposed on the side edge of the side wall 12 corresponding to the position of the light guide plate 40 along the positioning direction D2, and when the second assembling portion 41 of the light guide plate 40 is combined with the first assembling portion 31 of the positioning member 30, the light guide plate 40 moves towards the light bar 20. No matter whether the light bar 20 is disposed at the position corresponding to the positioning direction D2 of the light guide plate 40, the positioning effect of the light guide plate 40 is not affected, so that the manufacturer can select according to the product requirement.
In addition, the light bar 20 includes a substrate 21 and a plurality of light emitting units 22 disposed on the substrate 21 at intervals, and the substrate 21 is abutted against and positioned on the side wall 12 by the positioning member 30, and the plurality of light emitting units 22 are abutted against and fixed to the light guide plate 40 by the positioning member 30, so that the substrate 21 of the light bar 20 can be adhered to the side wall 12 without glue distribution, which can reduce material cost and assembly process, improve assembly convenience, and eliminate and re-adhere residual glue when the position of the light bar 20 needs to be adjusted, thereby reducing the loss caused by reworking and the time consumed for cleaning the residual glue.
In the preferred embodiment of the present utility model, the light bar 20 is disposed at a position on the side wall 12 corresponding to the light guide plate 40 along the positioning direction D2, as shown in fig. 2, at least one positioning protrusion 42 is formed on a side of the light guide plate 40 facing the light bar 20, and when the second assembling portion 41 is combined with the first assembling portion 31 corresponding to the position along the assembling direction D1, the light guide plate 40 is pushed to move along the positioning direction D2 toward the side wall 12 on which the light bar 20 is disposed until the positioning protrusion 42 of the light guide plate 40 contacts the light bar 20 to be positioned, thereby improving the assembling stability of the light bar 20.
If the width of the first assembly portion 31 in the positioning direction D2 is greater than the width of the second assembly portion 41, a gap is formed between the first assembly portion 31 and the second assembly portion 41, and the first distance L1 is smaller than the second distance L2, since the side of the second assembly portion 41 away from the light bar 20 is pushed by the positioning member 30, the positioning protrusion 42 of the light guide plate 40 pushes the light bar 20, the light guide plate 40 still receives two opposite pushing forces in the positioning direction D2, and thus the light guide plate 40 can be positioned and fixed.
In addition, the height of the positioning bump 42 is greater than the height of the plurality of light emitting units 22, and the positioning bump 42 abuts against the substrate 21 of the light bar 20, so that the distance between the light guide plate 40 and the substrate 21 can be ensured to be kept constant, and the light emitting units 22 are prevented from being damaged due to the light guide plate 40 pressing the light emitting units 22 in the transportation process or the thermal expansion process. Preferably, the positioning protrusion 42 of the light guide plate 40 is located at a corner of the light guide plate 40, and since the positioning protrusion 42 is located at the corner of the light guide plate 40 and is easily affected by light condensation, the positioning protrusion 42 is designed at the corner of the light guide plate 40 instead of being located at the main light emitting area of the light guide plate 40, so that the influence of the optical quality of the main light emitting area of the backlight module can be avoided, and preferably, when the positioning protrusions 42 are located at both corners of the light guide plate 40, both ends of the light bar 20 are evenly contacted and pushed by the two positioning protrusions 42, thereby improving the stability of the fixed light bar 20.
In the preferred embodiment of the present utility model, the bottom frame 11 is formed with at least one assembly groove 111, the positioning member 30 is fixed in the assembly groove 111, which can improve the assembly stability of the positioning member 30 and reduce the possibility of the reduced precision caused by the installation deviation of the worker when assembling the positioning member 30, wherein the positioning member 30 can be fixed in the assembly groove 111 in different manners, for example, the positioning member 30 can be directly embedded in the assembly groove 111 of the bottom frame 11 and is tightly matched with the assembly groove 111 for fixing, thereby reducing the cost of pasting materials and reworking without pasting on the bottom frame 11 by using adhesive tape; if the positioning member 30 is adhered and fixed in the assembly groove 111 by using the adhesive tape, the assembly stability can be further improved; in addition, when the positioning member 30 has elasticity, the positioning member 30 can be more tightly embedded in the assembly groove 111 by elastic deformation, so that the assembly stability can be improved, and the positioning member 30 can also be utilized to support the light guide plate 40, so that the sagging phenomenon of the light guide plate 40 can be avoided.
In addition, as shown in fig. 1, a manufacturer can set a plurality of positioning elements 30 on the bottom frame 11 according to the product design requirement, the light guide plate 40 is correspondingly provided with a plurality of second assembling portions 41 in a protruding manner corresponding to the plurality of positioning elements 30, each second assembling portion 41 is respectively combined with the first assembling portion 31 of each positioning element 30 to improve the assembling stability, in addition, the positioning elements 30 arranged at different positions on the frame 10 are all mutually common, and the exterior structure of the positioning elements 30 does not need to be redesigned according to the internal contour of the frame 10, so that the mold opening and manufacturing cost is reduced, time-consuming judgment of the assembling positions of the positioning elements 30 is not needed when the worker assembles, the assembling convenience is improved, and because the model is simple, the timeliness of the design sample manufacturing is faster, the development time is shortened, and if the plurality of positioning elements 30 are arranged on the bottom frame 11 along the direction perpendicular to the positioning direction D2, the positioning elements 30 can generate larger thrust to the light guide plate 40, and the assembling stability is improved. In the preferred embodiment of the present utility model, the assembly groove 111 may be a single strip, and the plurality of positioning members 30 are embedded in the single strip assembly groove 111 at intervals to improve the convenience of assembly and manufacture, and the single strip assembly groove 111 may extend along the positioning direction D2, and the positioning members 30 are arranged in the same row among the assembly grooves 111, so as to avoid the effect of easy mutual interference during different rows, or the bottom frame 11 may be formed with a plurality of assembly grooves 111 in cooperation with the positioning members 30, and each positioning member 30 may be embedded in one of the assembly grooves 111 correspondingly, so as to improve the assembly stability and the positioning accuracy.
Furthermore, the mounting groove 111 is adjacent to the side wall 12 where the light bar 20 is disposed, so that the mounting groove 111 can provide a space for mounting the light bar 20 without adding any additional structure to the bottom frame 11, thereby improving the convenience of manufacturing, and the second assembly portion 41 of the light guide plate 40 is correspondingly embedded in the positioning member 30 in the mounting groove 111 and is located closer to the light bar 20, thereby preventing the light guide plate 40 and the backlight module from being affected in optical quality, but the positioning member 30 can also be designed at other positions of the side wall 12 except for the adjacent light bar 20, so the disclosure is not limited to the embodiment. The base plate 21 of the light bar 20 can extend into the assembly groove 111 and be tightly fixed by the positioning member 30, so as to further improve the assembly stability of the light bar 20 in the assembly groove 111.
In the preferred embodiment of the present utility model, the assembling direction D1 and the positioning direction D2 are perpendicular to each other, so as to increase the thrust generated by the first assembling portion 31 on the second assembling portion 41, and thus the stability of the combination of the first assembling portion 31 and the second assembling portion 41 can be improved, and the positioning direction D2 is parallel to the light emitting surface 401 of the light guide plate 40, so that the assembling direction D1 is perpendicular to the light emitting surface 401, and therefore, when a worker assembles the light guide plate 40, only the second assembling portion 41 of the light guide plate 40 needs to be perpendicularly extended into the first assembling portion 31 of the positioning member 30, which can improve the convenience of assembly.
As shown in fig. 7, the backlight module includes a reflective sheet 50, the reflective sheet 50 is located between the light guide plate 40 and the bottom frame 11, and at least one limiting hole 51 is formed, the position of the limiting hole 51 corresponds to the position of the second assembling portion 41 of the light guide plate 40, the second assembling portion 41 passes through the limiting hole 51 and is combined with the corresponding first assembling portion 31, the reflective sheet of the conventional backlight module is not located, but is only located between the light guide plate and the frame, which is easy to deviate and affects the optical taste, in the backlight module of the present utility model, the reflective sheet 50 is located by the second assembling portion 41, which can avoid the influence of the optical taste due to the deviation of the reflective sheet 50, wherein, the reflective sheet 50 has one or more limiting holes 51, when the light guide plate 40 has a plurality of second assembling portions 41 arranged in a straight line, the reflective sheet 50 has a long groove-shaped limiting hole 51, and the plurality of second assembling portions 41 can be simultaneously stretched into the limiting holes 51 to locate the reflective sheet 50, so as to improve the convenience of manufacture; or in the preferred embodiment of the present utility model, the reflective sheet 50 is formed with a plurality of limiting holes 51 corresponding to the plurality of second assembling portions 41, and each limiting hole 51 is respectively capable of allowing each second assembling portion 41 to extend into, thereby further improving the positioning effect, improving the optical taste, reducing the risk of abnormal optical taste, and better matching the profile of the limiting hole 51 with the profile of the second assembling portion 41, so as to improve the positioning effect.
In addition, in the present backlight module, an assembly space for installing the light bar is required to be formed on the bottom frame, when the reflective sheet is installed on the bottom frame, since the assembly space forms a gap under the reflective sheet, in order to avoid the reflective sheet from sagging due to bending, a supporting structure for supporting the reflective sheet is required to be additionally arranged in the assembly space, contrary to the backlight module of the present utility model, when the assembly groove 111 of the bottom frame 11 is adjacent to the position of the side wall 12 where the light bar 20 is installed, the assembly groove 111 can provide the space required for installing the light bar 20, and the positioning member 30 can be embedded in the assembly groove 111 and provide support for the reflective sheet 50, so that the sagging phenomenon of the reflective sheet 50 is avoided, and therefore, the components of the backlight module can be simplified, the cost can be further reduced, the reliability can be improved, and the risk of the precision degradation caused by the error of the assembly can be reduced.
Furthermore, when the present backlight module is assembled, the positioning component for positioning the light guide plate is assembled first, and then the light bar and the supporting structure are assembled, which takes about 120 seconds, while when the backlight module of the present utility model is assembled, the light bar 20 is only required to be placed in the frame 10, and the positioning component 30 is only required to be installed in the assembly groove 111, and no additional supporting structure is required, so that only about 60 seconds is required, and the assembly time can be effectively reduced. In addition, since the light bar of the present backlight module can be adhered to the frame after the glue is applied, the light bar is difficult to be completely removed from the frame, material loss is easy to be caused, and reworking cannot be performed, the supporting structure is fixed in the frame through adhesion, in order to avoid tearing of the supporting structure during the removal, workers need to carefully remove the supporting structure, and then glue the supporting structure again, the reworking takes about 100 seconds.
Referring to fig. 8, a preferred embodiment of a display according to the present utility model includes the above-mentioned backlight module and a display panel 60, wherein the display panel 60 is disposed on the frame 10 and is located on the other side of the light guide plate 40 opposite to the bottom frame 11.
In summary, the second assembling portion 41 of the light guide plate 40 of the backlight module with the light guide plate capable of guiding and positioning according to the present utility model can position the light guide plate 40 by combining with the first assembling portion 31 of the positioning member 30, and the positioning member 30 can also be used for positioning the light bar 20, so as to reduce the glue distribution cost and assembling time, and reduce the components used in the backlight module, so as to reduce the production cost, the assembly tolerance of the components, the reworking loss and the assembling time, and increase the yield of the product. In addition, the backlight module can be applied to a vehicle-mounted display device.
Although the embodiments of the present utility model have been described above, the present utility model is not limited thereto, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present utility model, and the scope of the present utility model is defined by the appended claims.
[ list of reference numerals ]
10: frame
11: bottom frame
111: assembly groove
12: side wall
20: light bar
21: substrate board
22: light-emitting unit
30: positioning piece
31: a first assembly part
40: light guide plate
401: light-emitting surface
41: a second assembly part
42: positioning protruding block
50: reflection sheet
51: limiting hole
60: display panel
D1: assembly direction
D2: orientation direction
L1: first distance
L2: second distance
90: frame
91: light guide plate
92: light bar
93: positioning component
931: base part
932: and a pushing part.
Claims (12)
1. The utility model provides a light guide plate can guide backlight unit of location which characterized in that, it includes:
a frame comprising a bottom frame and side walls connected;
a light bar disposed on the sidewall;
at least one positioning piece, which is arranged on the bottom frame and is provided with a first assembling part; a kind of electronic device with high-pressure air-conditioning system
The light guide plate is arranged in the frame and is positioned above the positioning piece, at least one second assembly part is arranged on one side facing the positioning piece, the position of the second assembly part corresponds to the first assembly part of the positioning piece, and when the second assembly part is combined with the first assembly part corresponding to the position along the assembly direction, the light guide plate can be pushed against to move towards the side wall along the positioning direction.
2. The backlight module according to claim 1, wherein the positioning member is made of a compressible elastic material, the second assembly portion is combined with the first assembly portion corresponding to the position along the assembly direction, the positioning member is compressed, and the elastic restoring force of the positioning member pushes the second assembly portion to move the light guide plate toward the side wall along the positioning direction.
3. The backlight module according to claim 1, wherein the first assembly portion of the positioning member is in a concave hole shape, the second assembly portion of the light guide plate is in a column shape, the second assembly portion can extend into the first assembly portion corresponding to the position, and a distance from a center of the first assembly portion to the side wall is smaller than or equal to a distance from a center of the corresponding second assembly portion to the side wall.
4. A backlight module with a light guide plate according to claim 3, wherein the first assembly portion has a shape of a rectangular concave hole with a long side parallel to the side wall.
5. The light guide plate of claim 1, wherein the light bar comprises a substrate and a plurality of light emitting units arranged on the substrate at intervals, the substrate is abutted against the side wall by the positioning piece, and the plurality of light emitting units face the light guide plate.
6. The backlight module according to claim 1, wherein at least one positioning protrusion is formed on a side of the light guide plate facing the light bar, and when the second assembly portion is combined with the first assembly portion corresponding to the position along the assembly direction, the light guide plate is pushed against to move along the positioning direction toward the side wall where the light bar is disposed until the positioning protrusion of the light guide plate contacts the light bar to be positioned.
7. The light guide plate guidable backlight module of claim 6 wherein the locating protrusions of the light guide plate are located at corners of the light guide plate.
8. The backlight module with the light guide plate capable of guiding and positioning according to claim 1, wherein the backlight module comprises a reflecting sheet, the reflecting sheet is located between the light guide plate and the bottom frame, at least one limiting hole is formed in the reflecting sheet, and the second assembly part of the light guide plate passes through the limiting hole and is combined with the corresponding first assembly part.
9. The light guide plate guided positioning backlight module of claim 1, wherein the assembling direction and the positioning direction are perpendicular to each other.
10. The backlight module according to any one of claims 1 to 9, wherein the bottom frame is formed with at least one fitting groove, and the positioning member is fixed in the fitting groove.
11. The light guide plate guidable backlight module of claim 10 wherein the mounting groove of the bottom frame is adjacent to the side wall where the light bar is disposed, the light bar extending into the mounting groove.
12. A display, comprising:
the backlight module in which the light guide plate according to any one of claims 1 to 11 is guidably positioned; a kind of electronic device with high-pressure air-conditioning system
And the display panel is arranged on the frame and is positioned on the other side of the light guide plate opposite to the bottom frame.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210638953 | 2022-06-08 | ||
| CN2022106389535 | 2022-06-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219065943U true CN219065943U (en) | 2023-05-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320064229.6U Active CN219065943U (en) | 2022-06-08 | 2023-01-10 | Backlight module and display with light guide plate capable of guiding and positioning |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP3241943U (en) |
| CN (1) | CN219065943U (en) |
| TW (1) | TWI813396B (en) |
| WO (1) | WO2023236336A1 (en) |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102691929B (en) * | 2012-02-15 | 2015-04-29 | 深圳市华星光电技术有限公司 | Backlight module |
| CN102588846B (en) * | 2012-03-08 | 2014-06-18 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display |
| CN102878484A (en) * | 2012-09-04 | 2013-01-16 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display |
| JP6529354B2 (en) * | 2015-06-18 | 2019-06-12 | 三菱電機株式会社 | Light source device and display device |
| JP6517730B2 (en) * | 2016-05-26 | 2019-05-22 | ミネベアミツミ株式会社 | Planar lighting device |
| WO2020070921A1 (en) * | 2018-10-04 | 2020-04-09 | ミネベアミツミ株式会社 | Surface lighting device |
| CN210691871U (en) * | 2019-11-06 | 2020-06-05 | 中强光电股份有限公司 | Backlight module |
| CN216596726U (en) * | 2021-10-22 | 2022-05-24 | 瑞仪光电(南京)有限公司 | Backlight module and display device |
| CN216595602U (en) * | 2021-12-30 | 2022-05-24 | 奕东电子科技股份有限公司 | Backlight source-based anti-buffering rubber block optimization structure |
-
2022
- 2022-07-25 TW TW111127805A patent/TWI813396B/en active
- 2022-08-03 WO PCT/CN2022/109836 patent/WO2023236336A1/en unknown
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2023
- 2023-01-10 CN CN202320064229.6U patent/CN219065943U/en active Active
- 2023-03-17 JP JP2023000810U patent/JP3241943U/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| JP3241943U (en) | 2023-05-17 |
| TWI813396B (en) | 2023-08-21 |
| WO2023236336A1 (en) | 2023-12-14 |
| TW202349072A (en) | 2023-12-16 |
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