CN114815396B - Backlight module and display device - Google Patents
Backlight module and display device Download PDFInfo
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- CN114815396B CN114815396B CN202210604140.4A CN202210604140A CN114815396B CN 114815396 B CN114815396 B CN 114815396B CN 202210604140 A CN202210604140 A CN 202210604140A CN 114815396 B CN114815396 B CN 114815396B
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- 230000003287 optical effect Effects 0.000 claims abstract description 33
- 230000008093 supporting effect Effects 0.000 claims abstract description 27
- 238000009434 installation Methods 0.000 claims abstract description 11
- 239000012528 membrane Substances 0.000 claims abstract description 9
- 238000002347 injection Methods 0.000 claims description 15
- 239000007924 injection Substances 0.000 claims description 15
- 239000002245 particle Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 11
- 239000012788 optical film Substances 0.000 description 32
- 239000000243 solution Substances 0.000 description 9
- 230000009286 beneficial effect Effects 0.000 description 6
- 239000002390 adhesive tape Substances 0.000 description 5
- 239000004973 liquid crystal related substance Substances 0.000 description 4
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133608—Direct backlight including particular frames or supporting means
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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
- G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
- G02F1/133314—Back frames
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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
- G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
- G02F1/133317—Intermediate frames, e.g. between backlight housing and front frame
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
Abstract
The application discloses a backlight module and a display device. The backlight module comprises a back plate, a middle frame and an optical assembly, wherein the back plate comprises a bottom plate, the middle frame comprises a supporting plate and a side plate assembly, the supporting plate and the bottom plate are oppositely arranged, the side plate assembly is connected to the edge of the supporting plate and extends towards the direction of the bottom plate, an installation space is formed by surrounding the bottom plate, the supporting plate and the side plate assembly together, the optical assembly is arranged in the installation space, a retaining wall assembly is convexly arranged on part of the edge of at least one side edge of the bottom plate towards the direction of the supporting plate, and an avoidance space is formed above the other part of the edge; the side plate assembly comprises a first side plate, and the first side plate is in plug-in fit with the retaining wall assembly in the direction vertical to the bottom plate; the optical component comprises an optical membrane, an open slot is formed in part of the edge of the optical membrane, the retaining wall component is embedded into the open slot, and the other part of the edge of the optical membrane extends into the avoidance space. According to the technical scheme, the effect of the narrow frame of the backlight module can be achieved, and the brightness area can be enlarged.
Description
Technical Field
The present disclosure relates to display technologies, and in particular, to a backlight module and a display device using the backlight module.
Background
With technological progress, development of ultra-narrow frames and even no frames of liquid crystal display devices becomes a trend of current liquid crystal display, the liquid crystal display devices comprise a backlight module and a display panel, and the backlight module is arranged on a backlight side of the display panel to provide a light source for the display panel.
The backlight module comprises a back plate and a middle frame, the back plate in the traditional backlight module generally comprises a bottom plate and a side plate convexly arranged at the edge of the bottom plate, and the middle frame is nested outside the side plate, so that the frame size of the backlight module is not smaller than the sum of the width of the middle frame and the thickness size of the side plate of the back plate, the frame of the backlight module is wider, and the development of the borderless liquid crystal display equipment is difficult to push.
Disclosure of Invention
The primary objective of the present application is to provide a backlight module, which aims to make the frame of the backlight module narrower.
In order to achieve the above objective, the backlight module provided by the present application comprises a back plate, a middle frame and an optical assembly, wherein the back plate comprises a bottom plate, the middle frame comprises a support plate and a side plate assembly, the support plate and the bottom plate are oppositely arranged, the side plate assembly is connected to the edge of the support plate and extends towards the direction of the bottom plate, an installation space is formed by surrounding the bottom plate, the support plate and the side plate assembly together, the optical assembly is arranged in the installation space, a retaining wall assembly is convexly arranged at part of the edge of at least one side edge of the bottom plate towards the direction of the support plate, and an avoidance space is formed above the other part of the edge of the bottom plate; the side plate assembly comprises a first side plate, and the first side plate is in plug-in fit with the retaining wall assembly in the direction perpendicular to the bottom plate; the optical component comprises an optical membrane, an open slot is formed in part of the edge of the optical membrane, the retaining wall component is embedded into the open slot, and the other part of the edge of the optical membrane extends into the avoidance space.
Optionally, the bottom plate has a first side and a second side that are oppositely disposed, the bottom plate further has a third side and a fourth side that are oppositely disposed, the optical assembly further includes a light emitting element, the light emitting element is disposed near the fourth side, and two ends of the first side and two ends of the second side are respectively connected with the third side and the fourth side; the retaining wall assembly is arranged on the part of the edges of the first side edge, the second side edge and the third side edge in a protruding mode.
Optionally, the retaining wall assembly comprises a retaining wall body and a supporting column, and the retaining wall body is in plug-in fit with the first side plate in a direction perpendicular to the bottom plate; the support column is located the inboard of barricade body, the first curb plate has still been seted up and has supplied the dodge groove of support column holding, the support column keep away from the terminal surface of bottom plate with dodge the cell wall butt in groove, the support column embedding in the open slot.
Optionally, a plurality of reflective particles are dispersed within the support posts.
Optionally, the support post is injection molded on the retaining wall body.
Optionally, the edges of the first side, the second side and the third side are further provided with hanging lugs in a protruding mode, the first side plate is provided with hanging lug grooves, and the hanging lugs are clamped into the hanging lug grooves.
Optionally, the edge of fourth side protruding is equipped with the connecting plate, the curb plate subassembly still includes the second curb plate, first curb plate with the second curb plate encloses jointly and closes and form closed frame, just the connecting plate with second curb plate joint.
Optionally, a clamping portion is convexly arranged on the outer side of the connecting plate, a clamping hole is formed in the second side plate corresponding to the clamping portion, and the clamping portion is clamped into the clamping hole.
Optionally, the backlight module further comprises a connecting adhesive tape, one end of the connecting adhesive tape is adhered to the outer surface of the side plate assembly, and the other end of the connecting adhesive tape is connected with one side of the bottom plate, which is away from the supporting plate.
The application also provides a display device, including display panel and foretell backlight unit, backlight unit locates display panel's income light side, in order to provide the light source for display panel.
According to the technical scheme, the retaining wall assembly is arranged in the direction of the supporting plate of the middle frame towards at least one side edge of the bottom plate of the back plate, and the retaining wall assembly can limit the optical assembly installed in the installation space. In addition, through protruding barricade subassembly that is equipped with at least one side's of bottom plate partial edge, and the center still includes the curb plate subassembly, through pegging graft the cooperation in the direction of perpendicular bottom plate with the first curb plate in barricade subassembly and the curb plate subassembly, then make barricade subassembly and first curb plate at the projection at least partial coincidence in the plane of bottom plate place to make backlight unit's frame width in this application be less than barricade subassembly thickness dimension and the thickness dimension sum of center first curb plate, consequently can realize backlight unit narrow frame's effect.
Further, in the application, through protruding the barricade subassembly that is equipped with at least one side's of bottom plate partial edge, another partial edge does not set up the barricade subassembly, but is formed with the space of dodging in another partial edge to through having seted up the open slot at the partial edge of optical diaphragm, the barricade subassembly imbeds the open slot, and the other partial edge of optical diaphragm extends to dodging in the space, then has increased the area of optical diaphragm, thereby is favorable to expanding backlight unit's luminous region.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained from the structures shown in these drawings without inventive effort to a person of ordinary skill in the art.
Fig. 1 is a schematic perspective view of a backlight module according to a first embodiment of the present application after a middle frame is removed;
fig. 2 is a schematic view of a partial structure of a backlight module according to a first embodiment of the present disclosure after a middle frame is disposed;
fig. 3 is a schematic view of a partial perspective view of another view angle of the backlight module according to the first embodiment of the present application after the middle frame is removed;
FIG. 4 is a cross-sectional view of the middle frame provided in FIG. 3, A-A;
FIG. 5 is a cross-sectional view of the middle frame provided B-B of FIG. 3;
fig. 6 is a schematic partial view of a back plate in a backlight module according to a first embodiment of the present disclosure;
fig. 7 is a schematic partial perspective view of a backlight module according to a first embodiment of the present application;
fig. 8 is a cross-sectional view of a display device according to a second embodiment of the present application.
Reference numerals illustrate:
the realization, functional characteristics and advantages of the present application will be further described with reference to the embodiments, referring to the attached drawings.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
It should be noted that, in the embodiment of the present application, directional indications (such as up, down, left, right, front, and rear … …) are referred to, and the directional indications are merely used to explain the relative positional relationship, movement conditions, and the like between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present application, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a 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 at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be regarded as not exist and not within the protection scope of the present application.
The display device generally includes a display panel and a backlight module, wherein the display panel is used for displaying images, and the backlight module is disposed on an incident side of the display panel, so as to provide a light source for the display panel. The backlight module comprises a back plate and a middle frame, wherein the back plate is connected with the middle frame and jointly encloses a containing cavity for installing the light-emitting component and the optical component. The backplate includes the bottom plate, and on the bottom plate of backplate was located to the luminous subassembly, the one side that luminous subassembly deviates from the bottom plate was located to the optical subassembly, and the center is connected with the backplate, specifically is the backplate and still includes the lateral wall that the boss was located the bottom plate, and the center is the cover body structure, and the outside lateral wall of backplate is located to the center cover to make backlight unit's frame width dimension be not less than the sum of the lateral wall thickness dimension of backplate and the thickness dimension of center, thereby make backlight unit's frame width great, be unfavorable for display device to narrow frame direction development.
In view of this, various embodiments of the present application provide a backlight module 1 and a display device using the backlight module 1.
Embodiment one:
in this embodiment, referring to fig. 1 and 2 in combination, the backlight module 1 includes a back plate 100, a middle frame 200, and an optical component, where the back plate 100 includes a bottom plate 130, the middle frame 200 includes a support plate 230 and a side plate component, the support plate 230 is opposite to the bottom plate 130, the side plate component is connected to an edge of the support plate 230 and extends toward the bottom plate 130, the support plate 230 and the side plate component enclose together to form an installation space, the optical component is disposed in the installation space, a retaining wall component 110 is convexly disposed at a part of edges of at least one side of the bottom plate 130 toward the direction of the support plate 230, and an avoidance space is formed above another part of edges; the side plate assembly comprises a first side plate 210, and the first side plate 210 is in plug-in fit with the retaining wall assembly 110 in the direction vertical to the bottom plate 130; the optical assembly comprises an optical film 300, an open groove 301 is formed in a part of the edge of the optical film 300, the retaining wall assembly 110 is embedded into the open groove 301, and the other part of the edge of the optical film 300 extends into the avoidance space.
The bottom plate 130 of the back plate 100, the support plate 230 of the middle frame 200, and the side plate assembly of the middle frame 200 together enclose a mounting space, in which an optical assembly, such as a light emitting element, a light guide plate, and an optical film 300, is mounted, wherein the light emitting element may be disposed on one side of the back plate 100, the light guide plate is disposed opposite to the bottom plate 130 of the back plate 100, and the optical film 300 is disposed on one side of the light guide plate facing away from the bottom plate 130. The support plate 230 of the middle frame 200 is provided at a side facing away from the bottom plate 130 for mounting the display panel 2 and supporting the display panel 2. At least one side of the bottom plate 130 protrudes toward the supporting plate 230, and the retaining wall assembly 110 can limit the optical film 300 and other components disposed between the bottom plate 130 and the supporting plate 230. The edge of the supporting plate 230 of the middle frame 200 is further connected with a side plate assembly, the side plate assembly comprises a first side plate 210, the first side plate 210 is in plug-in fit with the retaining wall assembly 110 in the direction perpendicular to the bottom plate 130, so that the projection of the first side plate 210 on the plane of the bottom plate 130 is at least partially overlapped with the projection of the retaining wall assembly 110 on the plane of the bottom plate 130, and therefore the frame width of the backlight module 1 can be smaller than the sum of the thickness dimension of the first side plate 210 of the middle frame 200 and the thickness dimension of the retaining wall assembly 110, and the frame width of the backlight module 1 is reduced.
In this application, the retaining wall assembly 110 is convexly disposed on a part of the edge of at least one side edge of the bottom plate 130, it can be understood that at least part of the edge of the bottom plate 130 is not provided with the retaining wall assembly 110, so that an avoidance space is formed above the edge of the bottom plate 130, which is not provided with the retaining wall assembly 110, the optical film 330 can extend into the avoidance space, thereby enlarging the setting area of the optical film 330, enlarging the light-emitting area of the backlight module 1, and setting the width of the support plate 230 in the middle frame 200 to be narrower, which is beneficial to the development of the backlight module 1 and the display device applying the backlight module 1 towards the direction of the narrow frame. In this application, the edge of the optical film 300 is provided with the open slot 301, and the retaining wall assembly 110 is embedded into the open slot 301, so it can be understood that the optical film 300 extends at least partially into the above mentioned avoiding space, so that the area of the optical film 300 is enlarged, and the brightness range of the backlight module 1 is enlarged. It should be noted that, the direction from the bottom plate 130 to the support plate 230 in the present application is defined as an upward direction.
Specifically, the bottom plate 130 is generally rectangular, i.e., the bottom plate 130 has four edges that enclose a rectangle, and the retaining wall assembly 110 described above may be disposed on at least any one of the four edges of the bottom plate 130. When the first side plate 210 of the middle frame 200 is inserted and matched with the retaining wall assembly 110 in the direction vertical to the bottom plate 130, one of the first side plate 210 and the retaining wall assembly 110 is provided with a slot 211, and the other is inserted into the slot 211. In one embodiment, as shown in fig. 4, the first side plate 210 of the middle frame 200 is provided with a slot 211, and the retaining wall assembly 110 is inserted into the slot 211. The slot 211 may be disposed on a side of the first side plate 210 facing away from the optical film 300; the slot 211 may be formed on a side of the first side plate 210 facing the optical film 300, or the slot 211 may be formed in a middle portion of the first side plate 210, that is, the end surface of the first side plate 210 facing away from the support plate 230 is recessed toward the support plate 230 to form the slot 211. When the retaining wall assembly 110 is inserted into the slot 211 of the first side plate 210, the outer edge of the first side plate 210 and the outer edge of the retaining wall assembly 110 may or may not be flush in a direction perpendicular to the bottom plate 130. When the outer edge of the first side plate 210 and the outer edge of the retaining wall assembly 110 are aligned in the direction perpendicular to the bottom plate 130, the frame of the backlight module 1 can be made narrower, so that the frame width of the backlight module 1 is equivalent to the thickness dimension of the first side plate 210 of the middle frame 200, which is more beneficial to forming a narrow frame. In another embodiment, the retaining wall is provided with an inserting slot 211, and the first side plate 210 is inserted into the groove of the retaining wall. The slot 211 may be formed by recessing an end surface of the retaining wall facing away from the bottom plate 130 toward the bottom plate 130, and the first side plate 210 of the middle frame 200 may be inserted into the slot 211.
According to the technical scheme, the retaining wall assembly 110 is arranged in the direction of the supporting plate 230 of the middle frame 200 towards at least one side edge of the bottom plate 130 of the back plate 100, and the retaining wall assembly 110 can limit the optical assembly installed in the installation space. In addition, the retaining wall assembly 110 is convexly disposed at a portion of the edge of at least one side of the bottom plate 130, and the middle frame 200 further includes a side plate assembly, and by inserting and matching the retaining wall assembly 110 with the first side plate 210 of the side plate assemblies in a direction perpendicular to the bottom plate 130, the projections of the retaining wall assembly 110 and the first side plate 210 in the plane of the bottom plate 130 are at least partially overlapped, so that the frame width of the backlight module 1 in the application is smaller than the sum of the thickness dimension of the retaining wall assembly 110 and the thickness dimension of the first side plate 210 of the middle frame 200, and therefore, the effect of the narrow frame of the backlight module 1 can be achieved. In this application, by providing the opening groove 301 at the edge of the optical film 300, the retaining wall assembly 110 is embedded into the opening groove 301, at least a portion of the optical film 300 in the optical assembly can extend into the avoiding space above the edge of the corresponding bottom plate 130 where the retaining wall assembly 110 is not provided, thereby being beneficial to expanding the light emitting area of the backlight module 1.
Further, as shown in fig. 1, the bottom plate 130 has a first side 101 and a second side 102 which are oppositely disposed, the bottom plate 130 also has a third side 103 and a fourth side 104 which are oppositely disposed, the optical assembly includes a light emitting element, the light emitting element is disposed close to the fourth side 104, and two ends of the first side 101 and two ends of the second side 102 are respectively connected with the third side 103 and the fourth side 104; a retaining wall assembly 110 is convexly disposed on a portion of the edge of the first side 101, a portion of the edge of the second side 102, and a portion of the edge of the third side 103.
It can be understood that, generally, the light emitting element is disposed near the ground side of the display device, i.e. corresponding to the fourth side 104, so that when the user uses the display device, the user can easily see the top side (corresponding to the third side 103), the left side (corresponding to the first side 101) and the right side (corresponding to the second side 102) of the display screen, and therefore, the frame widths of the three sides can make the user intuitively feel the frame widths of the backlight module 1 and the display device, and therefore, by providing the retaining wall assemblies 110 above on the third side 103, the first side 101 and the second side 102 of the bottom plate 130, the frame widths of the top side, the left side and the right side of the backlight module 1 are smaller, so that the whole backlight module 1 looks narrower.
It should be noted that, in the technical solution of the present application, when the user is facing the display panel 2, "the top side", "the left side", and "the right side" are based on the position of the display surface of the display panel 2 when it is perpendicular to the ground, the side above the bottom plate 130 of the backlight module 1 is the top side, the edge of the left side of the bottom plate 130 of the backlight module 1 is the left side, and the edge of the right side of the bottom plate 130 of the backlight module 1 is the right side.
Further, as shown in fig. 1, a retaining wall assembly 110 is protruded from a portion of the edge of the first side 101, a portion of the edge of the second side 102, and a portion of the edge of the third side 103.
By providing the retaining wall assembly 110 protruding only at a portion of the edge of the first side 101, a portion of the edge of the second side 102, or a portion of the edge of the third side 103, the cost of providing the retaining wall assembly 110 can be reduced, and the fixing of the middle frame 200 can be facilitated, and the middle frame 200 can be restrained by the retaining wall assembly 110 in a direction parallel to the bottom plate 130. In addition, by only protruding the retaining wall assembly 110 at a part of the edge of the first side 101, a part of the edge of the second side 102 or a part of the edge of the third side 103, the other part of the edge of the first side 101, the other part of the edge of the second side 102 or the other part of the edge of the third side 103 can be correspondingly provided with avoiding spaces, so that the optical film 300 can be further extended into the avoiding spaces, which is beneficial to enlarging the area of the optical film 300 and further enlarging the display area.
Specifically, referring to fig. 4 and fig. 6 in combination, the retaining wall assembly 110 includes a retaining wall body 111 and a supporting column 112, and the retaining wall body 111 and the first side plate 210 are inserted and matched in a direction perpendicular to the bottom plate 130; the support column 112 is disposed on the inner side of the retaining wall body 111, the first side plate 210 is further provided with a avoiding groove 212 for accommodating the support column 112, the end surface of the support column 112 away from the bottom plate 130 is abutted with the groove wall of the avoiding groove 212, and the support column 112 is embedded into the opening groove 301.
The retaining wall body 111 is formed by protruding the edge of the bottom plate 130, and the retaining wall body 111 is inserted and matched with the first side plate 210 of the middle frame 200 in the direction perpendicular to the bottom plate 130, so that the projection of the retaining wall body 111 in the plane of the bottom plate 130 and the projection of the first side plate 210 in the plane of the bottom plate 130 are at least partially overlapped, thus the frame width of the backlight module 1 is smaller, and the development of the backlight module 1 and the display device in the direction of narrow frame is facilitated.
The support column 112 is arranged on the inner side of the retaining wall body 111, and the end surface of the support column 112 far away from the bottom plate 130 is abutted against the groove wall of the avoidance groove 212 of the first side plate 210, so that the support column 112 can effectively support the middle frame 200, and when the end surface of the support column 112 far away from the bottom plate 130 is a plane, the middle frame 200 can be further ensured to have higher flatness. Wherein, the support column 112 may be entirely located in the escape slot 212, or the support column 112 may be partially located in the escape slot 212. When the support column 112 is partially located in the avoidance groove 212, the side, close to the retaining wall body 111, of the support column 112 can be located in the avoidance groove 212, and the side, facing the optical film 300, of the support column 112 extends out of the avoidance groove 212. Of course, to further achieve a narrower bezel effect, the support posts 112 may extend entirely into the relief slots 212. Specifically, the supporting columns 112 may be attached to the inner side walls of the retaining wall body 111, and the supporting columns 112 may be spaced apart from the inner side walls of the retaining wall body 111. In order to be more beneficial to realizing the effect of the narrow frame, the support column 112 is preferably attached to the inner side wall of the retaining wall body 111.
In addition, the terminal surface that support column 112 deviates from bottom plate 130 in this application technical scheme can deviate from the terminal surface non-parallel and level setting of bottom plate 130 with barricade body 111, define the direction of perpendicular bottom plate 130 promptly and be the direction of height, bottom plate 130 is less than backup pad 230 setting, then the top face of support column 112 can be less than the top face setting of barricade body 111, and the dodging groove 212 and the support column 112 adaptation of center 200, set up so, can make barricade body 111 can further spacing towards the top centering 200 of one side of optics diaphragm 300, restriction center 200 outside removes. Of course, in other embodiments, the top end surface of the support column 112 may be higher than the top end surface of the retaining wall body 111, and the avoiding groove 212 of the middle frame 200 is adapted to the support column 112. It should be noted that, in the technical scheme of the application, if the support column 112 needs to be injection molded by attaching to the retaining wall body 111, the top end surface of the injection molded support column 112 may be lower than the top end surface of the retaining wall body 111 or flush with the top end surface of the retaining wall body 111.
By forming the opening groove 301 on the part of the edge of the optical film 300 facing the support column 112, the support column 112 is inserted into the opening groove 301, so that on one hand, the arrangement area of the optical film 300 is enlarged, and the light-emitting area is increased; on the other hand, the optical film 300 can be limited by the support columns 112, so that the optical film 300 is prevented from moving in the direction parallel to the bottom plate 130. The support column 112 may be semi-cylindrical, rectangular parallelepiped, or other shape. In order to avoid the support column 112 from damaging the optical film 300, the support column 112 may preferably be semi-cylindrical, the surface of the support column 112 facing the optical film 300 is a cambered surface, and the opening groove 301 of the optical film 300 may be configured to be matched with the shape of the support column 112, so as to avoid the optical film 300 from being damaged by the support column 112.
In one embodiment, the support posts 112 are injection molded onto the retaining wall body 111. By the arrangement, the support column 112 and the retaining wall body 111 can be integrated, and the support column 112 is ensured to have higher strength.
Specifically, the retaining wall body 111 may be provided with a first injection hole, so that the support column 112 may be formed by injection molding of the first injection hole to the inner side of the retaining wall, and a portion of the injection molded support column 112 extends into the first injection hole to be connected with the retaining wall body 111 more firmly. The first injection holes may be provided at intervals of one, two, three or more in the height direction of the retaining wall body 111, i.e., in a direction perpendicular to the bottom plate 130. In addition, the second injection hole can be formed in the floor of the back plate 100, so that the second injection hole can be used for injecting plastic to the inner side of the retaining wall body 111, and the injection-molded support column 112 can be in an integrated structure with the retaining wall body 111, so that the stable connection effect of the injection-molded support column and the retaining wall body can be ensured.
Further, a plurality of reflective particles are dispersed in the support column 112.
By dispersing a plurality of reflective particles in the supporting columns 112, the brightness loss at the opening groove 301 of the optical film 300 can be compensated, so that the brightness display area of the backlight module 1 is further enlarged, and the backlight module 1 has good light emitting effect. Before injection molding, the supporting columns 112 add reflective particles into the injection molded material, so as to ensure that the reflective particles dispersed in the molded supporting columns 112 are more uniform, and thus the backlight module 1 has a better uniform light emitting effect.
In other embodiments, the support column 112 may also be integrally connected with the middle frame 200, for example, the support column 112 may be injection molded to the middle frame 200. Specifically, the support column 112 may be injection molded on a side of the support plate 230 of the middle frame 200 facing the bottom plate 130, and one end of the support column 112 away from the support plate 230 abuts against the bottom plate 130, so that the upper surface of the middle frame 200 is ensured to have higher flatness. The support columns 112 may be located on a side of the retaining wall body 111 facing the optical film 300, i.e. the support columns 112 are located on a side of the retaining wall body 111 facing the display area, or the support columns 112 may be further arranged along the edge of the bottom plate 130 along the retaining wall body 111 at intervals or closely attached to the edge of the bottom plate 130.
Of course, the support column 112 may be integrally connected with the bottom plate 130, and the support column 112 extends toward the direction of the support plate 230 and abuts against the support plate 230, so that the support column 112 has a better supporting effect on the middle frame 200, and the upper surface of the middle frame 200 has a higher flatness. The support column 112 may be disposed on a side of the retaining wall body 111 facing the optical film 300, i.e. the support column 112 is disposed on a side of the retaining wall body 111 facing the display area. Alternatively, the support columns 112 and the retaining wall body 111 may be spaced apart or closely adjacent to each other along the edge of the bottom plate 130.
As shown in fig. 2, based on the above-mentioned scheme that the bottom plate 130 has a first side 101 and a second side 102 that are disposed opposite to each other, and the bottom plate 130 has a third side 103 and a fourth side 104 that are disposed opposite to each other, in order to further ensure the assembly flatness of the upper surface of the metal middle frame 200, in this embodiment, the edges of the first side 101, the second side 102 and the third side 103 are further provided with lugs 120 in a protruding manner, and the first side 210 of the middle frame 200 is provided with lugs grooves into which the lugs 120 are engaged.
Specifically, the hanging groove may be formed on one side of the first side plate 210 facing away from the optical film 300, one end of the hanging groove 120 is connected with the side edge of the bottom plate 130, the other end bypasses one end of the first side plate 210 close to the bottom plate 130 and extends into the hanging groove, and the hanging groove 120 can be abutted with the groove wall of the hanging groove facing the direction of the bottom plate 130, so that the centering frame 200 further has a relatively stable supporting effect and ensures the flatness of the upper surface assembly of the centering frame 200.
Further, referring to fig. 1 and fig. 7 in combination, the edge of the fourth side 104 is convexly provided with a connecting plate 140, the side plate assembly further includes a second side plate 220, the first side plate 210 and the second side plate 220 enclose together to form a closed frame, and the connecting plate 140 is clamped with the second side plate 220.
The connecting plate 140 is convexly arranged at the edge of the fourth side 104, and the connecting plate 140 is clamped with the second side plate 220 of the middle frame 200, so that the middle frame 200 has good connection effect with the ground side of the bottom plate 130. The whole edge of the fourth side 104 is protruded to form the connecting plate 140, or part of the edge of the fourth side 104 is protruded to form the connecting plate 140, and the second side plate 220 of the middle frame 200 abuts against other edges of the fourth side 104, so as to avoid light leakage from the fourth side 104.
Specifically, the outer side of the connecting plate 140 is convexly provided with a clamping portion 141, and the second side plate 220 of the middle frame 200 is provided with a clamping hole 221 corresponding to the clamping portion 141, and the clamping portion 141 is clamped into the clamping hole 221.
By protruding the clamping portion 141 on the outer side of the connecting plate 140, the clamping portion 141 does not occupy more space for arranging the optical film 300, so that the arrangement area of the optical film 300 can be enlarged, and the light emitting area can be increased. In addition, by inserting the engaging portion 141 into the engaging hole 221 of the second side plate 220 of the middle frame 200, the middle frame 200 can be prevented from moving in a direction perpendicular to the bottom plate 130, so as to further ensure that the middle frame 200 has a stable installation effect after being installed on the back plate 100.
Of course, in other embodiments, the connecting plate 140 may be provided with a clamping hole 221, and the second side plate 220 of the middle frame 200 corresponding to the connecting plate 140 is provided with a clamping portion 141, and the clamping portion 141 is clamped into the clamping hole 221, so as to achieve the clamping effect of the connecting plate 140 and the middle frame 200.
As shown in fig. 7, in order to move the middle frame 200 in the direction along the third side 103 to the fourth side 104, the second side 220 of the middle frame 200 is further provided with a limiting groove 222, the limiting groove 222 is formed by recessing the end surface of the second side 220 facing away from the supporting plate 230 toward the supporting plate 230, and the connecting plate 140 is inserted into the limiting groove 222, so that the middle frame 200 and the fourth side 104 are limited to each other, and are prevented from moving in the direction along the third side 103 to the fourth side 104.
Further, as shown in fig. 7, in order to further prevent the middle frame 200 from separating from the back plate 100 in a direction perpendicular to the bottom plate 130, the backlight module 1 in the technical solution of the present application further includes a connecting adhesive tape 400, one end of the connecting adhesive tape 400 is adhered to an outer surface of the side plate assembly of the middle frame 200, and the other end is connected to a side of the bottom plate 130 facing away from the support plate 230.
Specifically, the connection tape 400 may have one end adhered to the outer surface of the first side plate 210 of the middle frame 200 and the other end connected to the side of the bottom plate 130 facing away from the support plate 230. The connection tape 400 may further have one end adhered to the outer surface of the second side plate 220 of the middle frame 200 and the other end connected to the side of the bottom plate 130 facing away from the support plate 230. By this arrangement, the connection strength between the middle frame 200 and the back plate 100 is further improved.
Embodiment two:
the application further provides a display device, as shown in fig. 8, the display panel 2 includes the display panel 2 and the backlight module 1, and the specific structure of the backlight module 1 refers to the above embodiment, and since the display device adopts all the technical solutions of all the embodiments, at least has all the beneficial effects brought by the technical solutions of the embodiments, and will not be repeated here. The backlight module 1 is disposed on the light incident side of the display panel 2 to provide a light source for the display panel 2. Specifically, the display panel 2 may be directly adhered to the support plate 230 of the middle frame 200 through double-sided tape.
The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the scope of the claims, and all equivalent structural changes made in the present application and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the present application.
Claims (9)
1. The backlight module comprises a back plate, a middle frame and an optical assembly, wherein the back plate comprises a bottom plate, the middle frame comprises a supporting plate and a side plate assembly, the supporting plate is arranged opposite to the bottom plate, the side plate assembly is connected to the edge of the supporting plate and extends towards the direction of the bottom plate, an installation space is formed by surrounding the bottom plate, the supporting plate and the side plate assembly together, and the optical assembly is arranged in the installation space. The side plate assembly comprises a first side plate, and the first side plate is in plug-in fit with the retaining wall assembly in the direction perpendicular to the bottom plate; the optical assembly comprises an optical membrane, an open slot is formed in part of the edge of the optical membrane, the retaining wall assembly is embedded into the open slot, and the other part of the edge of the optical membrane extends into the avoidance space;
the retaining wall assembly includes:
the retaining wall body is in plug-in fit with the first side plate in the direction perpendicular to the bottom plate; and
the support column is arranged on the inner side of the retaining wall body, the first side plate is further provided with an avoidance groove for accommodating the support column, the support column is far away from the end face of the bottom plate and is abutted to the groove wall of the avoidance groove, and the support column is embedded into the opening groove.
2. The backlight module according to claim 1, wherein the bottom plate has a first side and a second side which are disposed opposite to each other, the bottom plate further has a third side and a fourth side which are disposed opposite to each other, the optical assembly includes a light emitting element disposed adjacent to the fourth side, and both ends of the first side and both ends of the second side are respectively connected to the third side and the fourth side;
the retaining wall assembly is arranged on the part of the edges of the first side edge, the second side edge and the third side edge in a protruding mode.
3. The backlight module of claim 1, wherein a plurality of reflective particles are dispersed in the support posts.
4. The backlight module of claim 1, wherein the support posts are injection molded on the retaining wall body.
5. The backlight module according to claim 2, wherein the edges of the first side, the second side and the third side are further provided with hanging lugs in a protruding manner, the first side plate is provided with hanging lug grooves, and the hanging lugs are clamped into the hanging lug grooves.
6. The backlight module according to claim 2, wherein a connecting plate is protruding from an edge of the fourth side, the side plate assembly further comprises a second side plate, the first side plate and the second side plate enclose together to form a closed frame, and the connecting plate is clamped with the second side plate.
7. The backlight module according to claim 6, wherein a clamping portion is protruding on the outer side of the connecting plate, a clamping hole is formed in the second side plate corresponding to the clamping portion, and the clamping portion is clamped into the clamping hole.
8. The backlight module according to any one of claims 1 to 7, further comprising a connection tape having one end bonded to an outer surface of the side plate assembly and the other end connected to a side of the bottom plate facing away from the support plate.
9. A display device comprising a display panel and a backlight module according to any one of claims 1 to 8, the backlight module being arranged on the light entrance side of the display panel to provide a light source to the display panel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210604140.4A CN114815396B (en) | 2022-05-30 | 2022-05-30 | Backlight module and display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210604140.4A CN114815396B (en) | 2022-05-30 | 2022-05-30 | Backlight module and display device |
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| CN114815396A CN114815396A (en) | 2022-07-29 |
| CN114815396B true CN114815396B (en) | 2023-06-27 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101034779B1 (en) * | 2004-08-06 | 2011-05-17 | 삼성전자주식회사 | Back-light assembly and display device having the back-light assembly |
| CN201149633Y (en) * | 2007-12-17 | 2008-11-12 | 中华映管股份有限公司 | Backlight module unit and LCD device |
| JP2013026110A (en) * | 2011-07-25 | 2013-02-04 | Seiko Epson Corp | Lighting system, liquid crystal display device and electronic equipment |
| CN202835051U (en) * | 2012-09-28 | 2013-03-27 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display device adopting the same |
| US9817177B2 (en) * | 2013-05-28 | 2017-11-14 | Sakai Display Products Corporation | Light source device and display apparatus |
| CN205545641U (en) * | 2016-01-25 | 2016-08-31 | 深圳暴风统帅科技有限公司 | Narrow -frame display device |
| CN107543068B (en) * | 2016-06-28 | 2019-10-15 | 瑞仪光电(苏州)有限公司 | Backlight module |
| CN207366886U (en) * | 2017-08-31 | 2018-05-15 | 京东方科技集团股份有限公司 | A kind of backlight module and display device |
| CN207716361U (en) * | 2018-01-17 | 2018-08-10 | 信利半导体有限公司 | A kind of optical reflection piece and its backlight module |
| CN208013629U (en) * | 2018-04-24 | 2018-10-26 | 信利半导体有限公司 | A kind of narrow frame backlight module |
| TWI675238B (en) * | 2018-07-27 | 2019-10-21 | 友達光電股份有限公司 | Backlight module and display device |
| CN210573100U (en) * | 2019-09-06 | 2020-05-19 | 深圳市万普拉斯科技有限公司 | Connecting fixing piece, backlight module and liquid crystal display module |
| CN211061822U (en) * | 2019-11-22 | 2020-07-21 | 深圳市伟鸿科科技有限公司 | Backlight device and display device |
| CN211627969U (en) * | 2019-12-28 | 2020-10-02 | 深圳市帝显电子有限公司 | Backlight module and vehicle-mounted display |
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