CN117518590A - Backlight module, preparation method thereof and display panel - Google Patents
Backlight module, preparation method thereof and display panel Download PDFInfo
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- CN117518590A CN117518590A CN202310099688.2A CN202310099688A CN117518590A CN 117518590 A CN117518590 A CN 117518590A CN 202310099688 A CN202310099688 A CN 202310099688A CN 117518590 A CN117518590 A CN 117518590A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 13
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- 238000005520 cutting process Methods 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 238000003475 lamination Methods 0.000 claims description 9
- 238000005452 bending Methods 0.000 claims description 8
- 239000003292 glue Substances 0.000 claims description 4
- 238000010030 laminating Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 11
- 235000019640 taste Nutrition 0.000 abstract description 8
- 230000000007 visual effect Effects 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 6
- 239000010408 film Substances 0.000 description 70
- 239000000463 material Substances 0.000 description 13
- 239000004973 liquid crystal related substance Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
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- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 2
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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
-
- 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
-
- 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
-
- 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
-
- 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
- G02F1/133325—Assembling processes
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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 embodiment of the application provides a backlight module, a preparation method thereof and a display panel, wherein the backlight module comprises: a back plate; the lamp panel is arranged on one side of the backboard; the backlight film is arranged on one side of the lamp panel, which is away from the backboard; and the orthographic projection of the backlight film and the lamp panel on the backboard coincides with the backboard. By arranging the orthographic projection of the lamp panel and the backlight film on the backboard to coincide with the backboard, namely arranging the peripheries of the lamp panel and the backlight film in a flush manner, the assembly tolerance between the lamp panel and the backlight film can be reduced or avoided, the phenomenon of bluing of the edge caused by misalignment of the backlight film and the lamp panel is reduced, the visual effect and the display effect of the edge of the backlight module are improved, and therefore the picture taste of the display panel is improved; and the backboard is flush with the edges of the lamp panel and the backlight film, so that compared with the backboard in a bent shape, the process can be accelerated.
Description
Technical Field
The application belongs to the technical field of display, and particularly relates to a display panel, a preparation method thereof and a display device.
Background
The mini light emitting diode (Mini Light Emitting Diode, MLED) is used as a light source, has the advantages of small volume, long service life, high efficiency and the like, can be continuously used for 10 ten thousand hours, and has great potential as one of the development directions of the next-generation display technology.
MLED can be used as backlight or direct display. The MLED is used as backlight and is commonly applied to a liquid crystal display (Liquid Crystal Display, LCD), the LCD is constructed by placing a liquid crystal box in two parallel glass substrates, arranging a thin film transistor (Thin Film Transistor, TFT) on the lower substrate glass, arranging a color filter on the upper substrate glass, and controlling the rotation direction of liquid crystal molecules by changing signals and voltages on the TFT, thereby achieving the aim of controlling whether polarized light of each pixel point is emergent or not so as to achieve the display purpose. Compared with the traditional backlight LED module, the MLED is used as backlight to adopt denser chip arrangement to reduce the light mixing distance, so that an ultrathin light source module is realized.
However, in the display panel using the existing MLED as the backlight source, since the backlight film has more film materials, assembly tolerance exists between the lamp panel and the backlight film, which affects the visual effect and the display effect of the edge of the backlight module.
Disclosure of Invention
The embodiment of the application provides a backlight module, a preparation method thereof and a display panel, which reduce assembly tolerance between a lamp panel and a backlight film, improve visual effect and display effect of the edge of the backlight module, and therefore improve picture taste of the display panel.
In a first aspect, an embodiment of the present application provides a backlight module, including:
a back plate;
the lamp panel is arranged on one side of the backboard; and
the backlight film is arranged on one side of the lamp panel, which is away from the backboard;
and the orthographic projection of the backlight film and the lamp panel on the backboard coincides with the backboard.
Optionally, the back plate, the lamp panel and the backlight film form a laminated structure, and the laminated structure is provided with four opposite end parts;
the backlight module further comprises:
the connecting plate is arranged at least one end part of the laminated structure and is used for connecting the end part of the backboard, the end part of the lamp panel and the end part of the backlight film on the same side.
Optionally, the connecting plate includes:
the side plate is attached to the side wall of the laminated structure;
the top plate is connected with the side plate in a bending way and is attached to the top wall of the laminated structure;
the bottom plate is connected with the side plate in a bending way, is arranged opposite to the top plate and is attached to the bottom wall of the laminated structure.
Optionally, the top plate and the bottom plate extend along a horizontal direction perpendicular to the stacking direction of the stacked structure, and lengths of the top plate and the bottom plate in the horizontal direction are equal.
Optionally, in the horizontal direction, the ratio of the length of the top plate to the length of the laminated structure is in the range of 0.1; and/or
The ratio of the length of the bottom plate to the length of the laminated structure is in the range of 0.1.
Optionally, a connection glue is disposed between the connection board and the laminated structure.
In a second aspect, embodiments of the present application further provide a display panel, including:
the backlight module according to any one of the above claims;
the display module is arranged on one side of the backlight module.
In a third aspect, an embodiment of the present application further provides a method for manufacturing a backlight module, including:
sequentially laminating a back plate substrate, a lamp panel substrate and a backlight film substrate to form a laminated substrate;
and cutting the periphery of the laminated substrate along the lamination direction to form a laminated structure comprising a back plate, a lamp panel and a backlight film, wherein the orthographic projection of the backlight film and the lamp panel on the back plate is overlapped with the back plate.
Optionally, the cutting is performed on the periphery of the laminated substrate along the lamination direction to form a laminated structure including a back plate, a lamp panel and a backlight film, where after the orthographic projection of the back plate and the back plate coincide, the preparation method further includes:
and a connecting plate is arranged at least one end part of the laminated structure so as to connect the end part of the back plate, the end part of the lamp panel and the end part of the backlight film on the same side.
Optionally, the step of disposing a connection board at least one end of the laminated structure to connect the end of the back plate, the end of the lamp panel, and the end of the backlight film on the same side includes:
arranging a plate at least one end of the laminated structure;
bending two ends of the plate to form the connecting plate comprising a top plate, a side plate and a bottom plate which are sequentially connected, wherein the top plate is attached to the top wall of the laminated structure, the side plate is attached to the side wall of the laminated structure, and the bottom plate is attached to the bottom wall of the laminated structure.
In the backlight module, the preparation method thereof and the display panel, the front projection of the lamp panel and the backlight film on the backboard is set to coincide with the backboard, namely, the peripheries of the lamp panel and the backlight film are arranged in a flush manner, so that assembly tolerance between the lamp panel and the backlight film can be reduced or avoided, edge bluing caused by misalignment of the backlight film and the lamp panel is reduced, visual effect and display effect of the edge of the backlight module are improved, and therefore picture taste of the display panel is improved; and the backboard is flush with the edges of the lamp panel and the backlight film, so that compared with the backboard in a bent shape, the process can be accelerated.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings that are required to be used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained from these drawings without inventive effort to a person skilled in the art.
For a more complete understanding of the present application and the advantages thereof, reference is now made to the following descriptions taken in conjunction with the accompanying drawings. Wherein like reference numerals refer to like parts throughout the following description.
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present application.
Fig. 2 is a schematic cross-sectional view of the display panel shown in fig. 1 along A-A.
Fig. 3 is a schematic structural diagram of a backlight module according to an embodiment of the present application.
Fig. 4 is a schematic diagram of a second structure of the backlight module according to the embodiment of the present application.
Fig. 5 is a schematic cross-sectional view of the backlight module shown in fig. 4 along B-B.
Fig. 6 is a flowchart of a method for manufacturing a backlight module according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present application, and fig. 2 is a schematic sectional structural diagram of the display panel shown in fig. 1 along A-A. The display panel 1 includes a display module 10 and a backlight module 20, where the display module 10 and the backlight module 20 are stacked, for example, the display panel 1 has a light emitting side, and the display module 10 is disposed on a side of the backlight module 20 facing the light emitting side. The display panel 1 is a liquid crystal display panel, that is, an LCD, in which a liquid crystal cell is disposed between two parallel glass substrates, a thin film transistor is disposed on a lower substrate glass, a color filter is disposed on an upper substrate glass, and the rotation direction of liquid crystal molecules is controlled by changing signals and voltages on the TFT, so as to control whether polarized light of each pixel point is emitted or not to achieve the purpose of display, and the imaging of the display panel 1 is achieved by combining light emitted by a backlight source. The display module 10 is the above-mentioned upper glass substrate, the color filter thereon, the lower glass substrate, the thin film transistor thereon, and the liquid crystal cell therebetween, the backlight module 20 is used for providing a backlight source for the display module 10, and the light emitting source of the backlight module 20 can be an MLED.
The MLED technology has great potential to become one of the development directions of the next generation display technology, and the dark state display effect of LTPS (Low Temperature Poly-silicon, low temperature polysilicon) -LCD products is greatly improved along with the push of the medium-high end flat plate and notebook computer products in the MLED technology. MLED has significant advantages over OLED (Organic Light-Emitting Diode) in terms of power consumption/HDR (High Dynamic Range Imaging ) standard/CR/luminance/product reliability, although there is still a need for improvement in thickness and response time. However, as the backlight film has more film materials, the assembly between the lamp panel and the backlight film has tolerance, and the visual effect and the display effect of the edge of the backlight module are affected.
In order to improve the above situation, the structure of the backlight module 20 is improved in this embodiment, and two aspects of the structure composition and the manufacturing method of the backlight module 20 will be described below.
Referring to fig. 3 in conjunction with fig. 1 and fig. 2, fig. 3 is a schematic structural diagram of a backlight module according to an embodiment of the present application. The backlight module 20 comprises a back plate 21, a lamp plate 22 and a backlight film 23, wherein the lamp plate 22 is arranged on one side of the back plate 21, and the backlight film 23 is arranged on one side of the lamp plate 22 away from the back plate 21. Wherein, the orthographic projection of the backlight film 23 and the lamp panel 22 on the back plate 21 is overlapped with the back plate 21.
In the backlight module 20 provided by the embodiment of the present application, the front projection of the lamp panel 22 and the backlight film 23 on the back plate 21 is set to coincide with the back plate 21, that is, the peripheries of the lamp panel 22 and the backlight film 23 are flush, so that assembly tolerance between the lamp panel 22 and the backlight film 23 can be reduced or avoided, edge bluing caused by misalignment of the backlight film 23 and the lamp panel 22 is reduced, visual effect and display effect of the edge of the backlight module 20 are improved, and thus the picture taste of the display panel 1 is improved; in addition, the backboard 21 is also flush with the edges of the lamp panel 22 and the backlight film 23, so that the process can be accelerated compared with a backboard in a bent shape.
The back plate 21 is a supporting device or a bearing device of the backlight module 20, and the back plate 21 can be made of a hard metal material to ensure that the back plate 21 has sufficient strength and supporting function. For example, the back plate 21 may be made of steel plate or aluminum plate.
The lamp panel 22 is a main light-emitting unit of the backlight module 20, the lamp panel 22 may include a lamp holder and light-emitting chips disposed thereon, the light-emitting chips are arranged in an array on the lamp holder, and the light-emitting chips may be MLED chips. The lamp panel 22 is mounted on the back plate 21, for example, the lamp panel 22 may be adhered to the back plate 21 by back plate adhesive.
The backlight film 23 determines the efficiency of the entire backlight module 20, wherein the brightness enhancement film with prismatic microstructure can effectively enhance the illumination brightness, uniformity and image contrast, and indirectly improve the power consumption performance of the backlight module. Under a certain light source output, the front brightness, or axial brightness, of the liquid crystal module is improved through the prism film, the reflective polarizer and the high-reflectivity reflector. There are two ways to increase on-axis brightness without increasing the number of light sources: firstly, improving the angular distribution of the light rays and concentrating the light rays on a front view angle; and secondly, the loss is reduced, and the total luminous flux of the emitted light is improved. The backlight film 23 may perform light mixing to uniformly disperse light; the backlight film 23 may also convert blue light into white light or the like.
In the prior art, due to the fact that the edges of the backlight module are not aligned due to the cutting tolerance and the assembly tolerance between the lamp panel and the backlight film, bad tastes such as blue edges and dark edges are easy to occur.
Referring to fig. 1 to 3 and referring to fig. 4 and 5, fig. 4 is a schematic diagram of a second structure of the backlight module according to the embodiment of the present application, and fig. 5 is a schematic diagram of a cross-sectional structure of the backlight module along B-B shown in fig. 4. In order to solve the above-mentioned problems, the edge of the backlight module 20 is integrally cut to reduce the tolerance gap between the backlight film 23 and the lamp panel 22. Illustratively, the back plate 21, the light plate 22 and the backlight film 23 form a laminated structure 26, that is, the back plate 21, the light plate 22 and the backlight film 23 as a whole, the laminated structure 26 having four opposite ends 260. It is understood that the back plate 21, the light plate 22 and the backlight film 23 may have rectangular or square shapes, and thus, the three may be stacked and overlapped to obtain four opposite ends 260.
The backlight module 20 further includes a connection board 24, where the connection board 24 is disposed at least one end 260 of the laminated structure 26, and the connection board 24 is used for connecting the end of the back plate 21, the end of the lamp panel 22 and the end of the backlight film 23 on the same side.
For example, the webs 24 may be formed of a metallic material to enhance the strength of the connection at the ends of the laminate structure 26. For example, the connection plate 24 may be made of the same material as the back plate 21, such as a steel plate or an aluminum plate. The thickness of the connection plate 24 may be the same as the thickness of the back plate 21, and it is needless to say that the thickness is the same within a range of a set error such as 5%. In the prior art, the back plate is bent to cover the lamp plate and the backlight film, and the back plate is not uniform in arrangement, so that the overall strength of the backlight module is insufficient. In the embodiment of the present application, the connection board 24 may be understood as a small connection piece for detaching the back plate, which can not only improve the overall strength of the backlight module 20, but also improve the overall optical taste of the edge.
The connection board 24 may cover a part of the laminated structure 26, so that the back plate 21, the lamp panel 22 and the backlight film 23 in the laminated structure 26 are tightly connected, and the overall strength of the backlight module 20 is improved. Illustratively, the connecting plate 24 includes a side plate 240, a top plate 241, and a bottom plate 242. The side plate 240 is attached to the side wall 261 of the laminated structure 26, and the top plate 241 is connected with the side plate 240 in a bending manner and is attached to the top wall 262 of the laminated structure 26; the bottom plate 242 is connected to the side plate 240 by bending, is disposed opposite to the top plate 241, and is attached to the bottom wall 263 of the laminated structure 26. It will be appreciated that the web 24 is U-shaped with the U-shaped opening snapped over the end 260 of the laminate structure 26.
Wherein, be provided with between connecting plate 24 and the stromatolite structure 26 and connect gluey 25, connect gluey 25 can fill between connecting plate 24 and the stromatolite structure 26, play buffering and connect the effect for connect between connecting plate 24 and the stromatolite structure 26 reliably, strengthen the stability of backlight unit 20.
For example, the connection plate 24 may be provided at only one end 260 of the four ends 260 of the laminated structure 26. The back plate 21, the lamp panel 22, and the backlight film 23 are stacked in the stacking direction Y, and the top plate 241 and the bottom plate 242 in the connection plate 24 extend in the horizontal direction X perpendicular to the stacking direction Y of the stacked structure 26, and the lengths of the top plate 241 and the bottom plate 242 in the horizontal direction X are equal, but are not absolute, and because of the manufacturing error, the lengths of the top plate 241 and the bottom plate 242 can be considered to be equal within a set error range, such as 5%. Of course, the length of the top plate 241 and the length of the bottom plate 242 may not be equal, such as the length of the bottom plate 242 being greater than the length of the top plate 241, which may increase the stability of the load bearing of the laminate structure 26.
Wherein the connection plates 24 are disposed at the end portions 260 of the laminated structure 26, and the ratio of the length of the top plate 241 to the length of the laminated structure 26 in the horizontal direction X is in the range of 0.1 and/or the ratio of the length of the bottom plate 242 to the length of the laminated structure 26 is in the range of 0.1. For example, when the length of the laminated structure 26 is 100 cm, the length of the top plate 241 is 10 cm, so that the overall strength of the backlight module 20 can be enhanced without affecting the display of the light source in the lamp panel 22.
For example, two webs 24 may be provided at two ends 260 of the four ends 260 of the laminate structure 26, the two ends 260 may be adjacent ends 260, and the two ends 260 may be opposite ends 260. Taking two opposite end portions 260 as an example, the two connection plates 24 may be symmetrically arranged along the center line of the stacking direction Y with respect to the stacking structure 26, that is, the two U-shaped plates are opposite, and the U-shaped openings are opposite, so that the stability of the backlight module 20 may be enhanced compared to the arrangement of a single connection plate 24. In the case of the laminated structure 26 having an upper end portion, a lower end portion, a left end portion, and a right end portion, the connection plates 24 may be provided at the upper end portion and the left end portion or the right end portion, respectively, or the connection plates 24 may be provided at the left end portion and the right end portion, respectively.
For example, three webs 24 may be provided at three ends 260 of the four ends 260 of the laminate structure 26, two ends 260 of the three ends 260 being disposed opposite each other, the other end 260 being adjacent to two opposite ends 260. Taking the example where the laminated structure 26 has an upper end portion, a lower end portion, a left end portion, and a right end portion, the connection plates 24 may be provided at the upper end portion, the left end portion, and the right end portion, respectively, leaving the lower end portion free for arrangement of wires of the backlight module 20, and the like.
In order to more clearly illustrate the structural composition of the backlight module 20 according to the embodiment of the present application, the following description will be made from the perspective of the manufacturing method of the backlight module.
For example, please refer to fig. 1 to 5 in combination with fig. 6, fig. 6 is a flow chart of a method for manufacturing a backlight module according to an embodiment of the present application. The embodiment of the application provides a preparation method of a backlight module, which comprises the following steps:
101. and sequentially laminating the back plate base material, the lamp plate base material and the backlight film base material to form a laminated base material.
In the process of manufacturing the backlight module, a manufactured back plate substrate, a lamp panel substrate and a backlight film substrate need to be provided first, wherein the manufacturing completion indicates a state that only cutting is needed on the substrate to form a required size, for example, a state that an MLED chip is already mounted on a lamp holder for the lamp panel substrate. For example, a backlight film substrate is a laminate of a plurality of films and is bonded to each other.
The lamination direction of the base material can be along the vertical direction, and the back plate base material, the lamp panel base material and the backlight film base material are sequentially laminated in the vertical direction to form a laminated base material.
102. Cutting the periphery of the laminated substrate along the lamination direction to form a laminated structure comprising a back plate, a lamp panel and a backlight film, and enabling the orthographic projection of the backlight film and the lamp panel on the back plate to coincide with the back plate.
And cutting the periphery of the laminated base material along the lamination direction to form a laminated structure with orderly edges, wherein the cut laminated structure comprises a back plate, a lamp panel and a backlight film which are sequentially laminated, and the orthographic projection of the backlight film and the lamp panel on the back plate is overlapped with the back plate.
In the prior art, the lamp panel and the backlight film are assembled, and then the lamp panel and the backlight film are mounted on the back plate through the back plate glue, and the periphery of the back plate is bent to cover the lamp panel and the backlight film. The backlight module set in this way is easy to cause large assembly tolerance of the lamp panel and the backlight film, and further affects the taste of the edge of the backlight module. In order to improve the above situation, the laminated substrate is uniformly cut, so that the lamp panel and the backlight film are flush in edge, the edge display effect of the backlight module is improved, the backboard is also cut together with the lamp panel and the backlight film, the process flow can be saved, and the preparation of the backlight module is accelerated.
103. A connection plate is provided at least one end of the laminated structure to connect the end of the back plate, the end of the lamp panel, and the end of the backlight film on the same side.
The laminated structure may have four opposite ends, and in order to tightly connect the back plate, the lamp panel, and the backlight film in the laminated structure, a connection plate may be provided at least one end of the laminated structure to connect the end of the back plate, the end of the lamp panel, and the end of the backlight film on the same side.
The connecting plate can be of a U-shaped structure, and the U-shaped opening is clamped at least one end of the laminated structure. The connecting plate can include curb plate, roof and bottom plate, and the curb plate can vertical setting, and roof and bottom plate are relative and extend along parallel direction, and roof and curb plate are buckled and are connected, and bottom plate and curb plate are buckled and are connected. In the preparation process, a plate can be arranged at least one end part of the laminated structure, two ends of the plate are bent to form a connecting plate comprising a top plate, a side plate and a bottom plate which are sequentially connected, the top plate is attached to the top wall of the laminated structure, the side plate is attached to the side wall of the laminated structure, and the bottom plate is attached to the bottom wall of the laminated structure.
The connecting plate can be arranged at one end part of the laminated structure, two connecting plates can be arranged at two end parts of the laminated structure, three connecting plates can be arranged at three end parts of the laminated structure, and when a plurality of connecting plates are arranged, the plurality of connecting plates can be uniformly manufactured and simultaneously mounted at the end parts of the laminated structure.
Wherein, can adopt the connection to glue between lamination and the connecting plate and fill, the connection is glued and is played buffering and connection effect to promote backlight unit's bulk strength and stability.
In the preparation method of the backlight module, the orthographic projection of the lamp panel and the backlight film on the backboard is overlapped with the backboard, namely, the peripheries of the lamp panel and the backlight film are arranged in a flush manner, so that assembly tolerance between the lamp panel and the backlight film can be reduced or avoided, edge bluing caused by misalignment of the backlight film and the lamp panel is reduced, visual effect and display effect of the edge of the backlight module are improved, and therefore picture taste of the display panel is improved; and the backboard is flush with the edges of the lamp panel and the backlight film, so that compared with the backboard in a bent shape, the process can be accelerated. According to the embodiment of the application, the whole backboard, the lamp panel and the backlight film are stacked together, and the whole cutting die is used for cutting, so that the tolerance gap between the backlight film and the lamp panel is reduced. And then the bottom backboard and the uppermost backlight film are packaged and attached through the U-shaped connecting plate and the double faced adhesive tape, so that the overall strength of the backlight module can be improved, and the overall optical taste of the edge can be improved.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.
In the description of the present application, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more features.
The backlight module, the preparation method thereof and the display panel provided by the embodiment of the application are described in detail, and specific examples are applied to the description of the principles and the implementation modes of the application, and the description of the above examples is only used for helping to understand the method and the core idea of the application; meanwhile, as those skilled in the art will vary in the specific embodiments and application scope according to the ideas of the present application, the contents of the present specification should not be construed as limiting the present application in summary.
Claims (10)
1. A backlight module, comprising:
a back plate;
the lamp panel is arranged on one side of the backboard; and
the backlight film is arranged on one side of the lamp panel, which is away from the backboard;
and the orthographic projection of the backlight film and the lamp panel on the backboard coincides with the backboard.
2. The backlight module according to claim 1, wherein the back plate, the lamp panel and the backlight film form a laminated structure having four opposite ends;
the backlight module further comprises:
the connecting plate is arranged at least one end part of the laminated structure and is used for connecting the end part of the backboard, the end part of the lamp panel and the end part of the backlight film on the same side.
3. A backlight module according to claim 2, wherein the connection plate comprises:
the side plate is attached to the side wall of the laminated structure;
the top plate is connected with the side plate in a bending way and is attached to the top wall of the laminated structure;
the bottom plate is connected with the side plate in a bending way, is arranged opposite to the top plate and is attached to the bottom wall of the laminated structure.
4. A backlight module according to claim 3, wherein the top plate and the bottom plate each extend in a horizontal direction perpendicular to the lamination direction of the laminated structure, and the lengths of the top plate and the bottom plate in the horizontal direction are equal.
5. A backlight module according to claim 3, wherein the ratio of the length of the top plate to the length of the laminated structure in the horizontal direction is in the range of 0.1; and/or
The ratio of the length of the bottom plate to the length of the laminated structure is in the range of 0.1.
6. A backlight module according to claim 2, wherein a connection glue is provided between the connection plate and the laminate structure.
7. A display panel, comprising:
a backlight module according to any one of claims 1-6;
the display module is arranged on one side of the backlight module.
8. The preparation method of the backlight module is characterized by comprising the following steps:
sequentially laminating a back plate substrate, a lamp panel substrate and a backlight film substrate to form a laminated substrate;
and cutting the periphery of the laminated substrate along the lamination direction to form a laminated structure comprising a back plate, a lamp panel and a backlight film, wherein the orthographic projection of the backlight film and the lamp panel on the back plate is overlapped with the back plate.
9. The method of manufacturing according to claim 8, wherein the cutting the periphery of the laminated substrate in the lamination direction forms a laminated structure including a back plate, a lamp panel, and a backlight film, the backlight film and the lamp panel being after the orthographic projection of the back plate coincides with the back plate, the method further comprising:
and a connecting plate is arranged at least one end part of the laminated structure so as to connect the end part of the back plate, the end part of the lamp panel and the end part of the backlight film on the same side.
10. The method of manufacturing according to claim 9, wherein the step of providing a connection plate at least one end of the laminated structure to connect the end of the back plate, the end of the lamp panel, and the end of the backlight film on the same side, comprises:
arranging a plate at least one end of the laminated structure;
bending two ends of the plate to form the connecting plate comprising a top plate, a side plate and a bottom plate which are sequentially connected, wherein the top plate is attached to the top wall of the laminated structure, the side plate is attached to the side wall of the laminated structure, and the bottom plate is attached to the bottom wall of the laminated structure.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310099688.2A CN117518590A (en) | 2023-01-31 | 2023-01-31 | Backlight module, preparation method thereof and display panel |
| PCT/CN2023/104728 WO2024159702A1 (en) | 2023-01-31 | 2023-06-30 | Backlight module and manufacturing method therefor, and display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310099688.2A CN117518590A (en) | 2023-01-31 | 2023-01-31 | Backlight module, preparation method thereof and display panel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117518590A true CN117518590A (en) | 2024-02-06 |
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ID=89757249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310099688.2A Pending CN117518590A (en) | 2023-01-31 | 2023-01-31 | Backlight module, preparation method thereof and display panel |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN117518590A (en) |
| WO (1) | WO2024159702A1 (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201039008A (en) * | 2009-04-23 | 2010-11-01 | Au Optronics Suzhou Corp | Liquid crystal display device |
| CN202521397U (en) * | 2012-02-15 | 2012-11-07 | 青岛海信电器股份有限公司 | Backlight module |
| CN105652516A (en) * | 2016-01-04 | 2016-06-08 | 合肥京东方显示光源有限公司 | Lateral entrance type backlight module and making method and display device thereof |
| KR102342626B1 (en) * | 2018-03-13 | 2021-12-23 | 애플 인크. | Displays with direct backlight units |
| CN109116603A (en) * | 2018-09-03 | 2019-01-01 | 信利光电股份有限公司 | A kind of cutting method of display screen component |
| CN111399280B (en) * | 2020-03-25 | 2022-05-20 | 海信视像科技股份有限公司 | Display device |
| CN115407548A (en) * | 2021-05-28 | 2022-11-29 | 海信视像科技股份有限公司 | Display device |
-
2023
- 2023-01-31 CN CN202310099688.2A patent/CN117518590A/en active Pending
- 2023-06-30 WO PCT/CN2023/104728 patent/WO2024159702A1/en unknown
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|---|---|
| WO2024159702A1 (en) | 2024-08-08 |
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