CN109212830A - Backlight module and its manufacturing method - Google Patents

Backlight module and its manufacturing method Download PDF

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Publication number
CN109212830A
CN109212830A CN201811207875.3A CN201811207875A CN109212830A CN 109212830 A CN109212830 A CN 109212830A CN 201811207875 A CN201811207875 A CN 201811207875A CN 109212830 A CN109212830 A CN 109212830A
Authority
CN
China
Prior art keywords
backlight module
plate
back plate
diffusion plate
diffusion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201811207875.3A
Other languages
Chinese (zh)
Inventor
张彦学
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huizhou China Star Optoelectronics Technology Co Ltd
Original Assignee
Huizhou China Star Optoelectronics Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huizhou China Star Optoelectronics Technology Co Ltd filed Critical Huizhou China Star Optoelectronics Technology Co Ltd
Priority to CN201811207875.3A priority Critical patent/CN109212830A/en
Priority to PCT/CN2018/115592 priority patent/WO2020077717A1/en
Publication of CN109212830A publication Critical patent/CN109212830A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133602Direct backlight
    • G02F1/133606Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133602Direct backlight
    • G02F1/133608Direct backlight including particular frames or supporting means
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133602Direct backlight
    • G02F1/133611Direct backlight including means for improving the brightness uniformity

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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

A kind of backlight module, comprising: backboard, light source, diffuser plate and connected structure;Backboard is set to the bottom of entire backlight module;Light source provides light source in array distribution between the backboard and the diffuser plate for entire backlight module;Diffuser plate is right against the backboard and is configured;Connected structure is set between the backboard and the diffuser plate, for stablizing the light mixing distance of entire backlight module;The utility model has the advantages that preventing the bending of curved die group from causing the change of light mixing distance by increasing integrally formed connected structure in backboard or diffuser plate, so that the light mixing distance of entire backlight module waits until to stablize.

Description

Backlight module and manufacturing method thereof
Technical content
The invention relates to the field of display, in particular to a backlight module and a manufacturing method thereof.
Background
The backlight module provides a back light source module in lcd (liquid Crystal display) display products, and generally comprises a backlight source and multiple layers of backlight materials. The backlight quality of the backlight module directly determines important parameters of the liquid crystal display screen such as brightness, emergent light uniformity and color gradation. Particularly, the optical distance (OD value) of the backlight module, i.e. the distance between the led (light Emitting diode) light source and the diffuser plate, is an important factor affecting the brightness and quality of the module. However, in the assembling process of the backlight module, due to the manufacturing or assembling tolerance, the assembled back plate or diffusion plate is easily deformed locally, so that the light mixing distance is changed, even deviates from the designed value. The light-emitting quality of the backlight module is seriously affected.
Therefore, the existing direct type backlight module technology still has the problem of unstable light mixing distance, and needs to be improved urgently.
Disclosure of Invention
The invention relates to a backlight module and a manufacturing method thereof, which are used for solving the problem of unstable light mixing distance in the prior art.
In order to solve the above problems, the technical scheme provided by the invention is as follows:
the invention provides a backlight module, comprising: a back plate, a light source, a diffusion plate and a connecting structure; wherein,
the back plate is arranged at the bottom of the whole backlight module;
the light sources are distributed between the back plate and the diffusion plate in an array mode and provide light sources for the whole backlight module;
the diffusion plate is arranged opposite to the back plate;
the linking structure is arranged between the back plate and the diffusion plate and used for stabilizing the light mixing distance of the backlight module.
According to a preferred embodiment of the present invention, the housing is an opaque hard plate, the light source comprises a plurality of parallel lamps, and the diffuser plate is a glass plate containing a diffusion coating.
According to a preferred embodiment of the present invention, the diffusion plate, the back plate and the engaging structure each include a first end surface and a second end surface, and the engaging structure further includes a first side surface and a second side surface.
According to a preferred embodiment of the present invention, rib plates are disposed on two sides of the connection structure in a direction parallel to the lamp tube.
According to a preferred embodiment of the present invention, the connection structure is made of a transparent optical material.
According to a preferred embodiment of the present invention, one end of the engaging structure is integrally formed with the diffuser plate or the back plate.
According to a preferred embodiment of the present invention, the other end of the engaging structure is connected to the back plate or the diffusion plate through an optical adhesive.
According to a preferred embodiment of the present invention, the engaging structure is cylindrical or rectangular.
According to a preferred embodiment of the present invention, the backlight module includes any one of the above features, and the method includes the steps of:
s10, providing a back plate or a diffusion plate including a connection structure;
s20, installing a light source on the first end face of the back plate or the diffusion plate;
s30, providing a back plate or a diffusion plate without a connection structure;
and S40, adhering the second end face of the connecting structure to the back plate or the diffusion plate by using optical glue.
According to a preferred embodiment of the present invention, the housing and the diffuser plate do not include the connection structure at the same time.
The technical effects are as follows: through increase integrated into one piece's linking structure in backplate or diffuser plate, prevent that the crooked change that causes mixed light distance of curved surface module for whole backlight unit's mixed light distance etc. is stable.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic view of a first structure of a backlight module according to an embodiment of the invention.
Fig. 2 is a second structural schematic diagram of the backlight module according to the embodiment of the invention.
Fig. 3 is a schematic view of a third structure of the backlight module according to the embodiment of the invention.
Fig. 4 is a fourth structural schematic diagram of the backlight module according to the embodiment of the invention.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
The present invention provides two preferred embodiments, which are described in detail below with reference to fig. 1, 2, 3 and 4.
Example one
Fig. 1 is a first structural diagram of the backlight module provided by the present invention, that is, a first view of the backlight module in which the back plate and the engaging structure are integrally formed. The first view is perpendicular to the direction of the lamp tube and perpendicular to the direction of the rib plate, namely the first side face and the second side face of the connecting structure are arranged in parallel to the lamp tube. Wherein 10 is a backplane, 101 is a first end face of the backplane 10, 102 is a second end face of the backplane 10, 20 is a joining structure, 201 is a first end face of the joining structure 20, 202 is a second end face of the joining structure 20, 203 is a first side face of the joining structure 20, 204 is a second side face of the joining structure 20, rib plate structures are arranged on the first side face and the second side face, 30 is optical cement, 40 is a diffusion plate, 401 is a first end face of the diffusion plate 40, and 402 is a second end face of the diffusion plate 40. The first end 101 of the back plate 10 is the first end 201 of the engaging structure, and the second end 202 of the engaging structure 20 is adhered to the first end 401 of the diffusion plate 40 through the optical adhesive 30.
Fig. 2 is a second structural diagram of the backlight module provided by the present invention, that is, a second view of the backlight module in which the back plate and the engaging structure are integrally formed. The second view is parallel to the direction of the lamp tube and the rib plate. The corresponding structures and positions in the figures are numbered the same as in fig. 1.
Example two
Fig. 3 is a third structural diagram of the backlight module according to the present invention, that is, a first view of the backlight module in which the diffusion plate and the connection structure are integrally formed. The first view is also perpendicular to the lamp tube direction and the rib plate direction, where 10 is a back plate, 101 is a first end surface of the back plate 10, 102 is a second end surface of the back plate 10, 20 is optical cement, 30 is the joining structure, 301 is a first end surface of the joining structure 30, 302 is a second end surface of the joining structure 30, 303 is a first side surface of the joining structure 30, 304 is a second side surface of the joining structure 30, rib plate structures are also disposed on the first side surface and the second side surface, 40 is a diffusion plate, 401 is a first end surface of the diffusion plate 40, and 402 is a second end surface of the diffusion plate 40. The first end 401 of the diffusion plate 40 is the second end 301 of the engaging structure, and the first end 301 of the engaging structure 20 is adhered to the first end 101 of the back plate 10 through the optical adhesive 20.
Fig. 4 is a fourth structural diagram of the backlight module according to the present invention, that is, a second view of the backlight module in which the diffusion plate and the connection structure are integrally formed is parallel to the direction of the lamp tube and the rib. The structure and position of the device are marked as in FIG. 3.
The back plate 10, as a chassis of the whole backlight module, plays a role of supporting and bearing.
The diffusion plate 40 diffuses the light passing through the diffusion coating layer to make the light distribution uniform.
The light source supplies light to the whole backlight module by electrifying, and is divided into a direct type and an edge type according to different models. The light sources of the direct type backlight module are distributed in a rectangular grid array.
Because the back plate and the diffusion plate are easy to deform when the existing backlight module is bent, the light mixing Distance (namely the OD value) deviates from the designed value, the Optical quality of the module is influenced, and in order to improve the stability of the OD value of the whole backlight module, the invention adds a connecting structure formed by adopting an Optical transparent material in the structure of the backlight module. By adding the connecting structure, the whole backlight module is not easy to compress or stretch, and when the OD value of the back plate or the diffusion plate is about to exceed the design value due to local stretching, the OD value is adjusted by the connecting structure through the tension at the two ends to return to the design value; when the OD value of the back plate or the diffusion plate is smaller than the designed value due to local compression, the linking structure plays a supporting role to ensure that the OD value is not reduced due to local deformation of the back plate or the diffusion plate.
Because the triangle has the characteristic of stability, the invention selects to add the rib plates on the two sides of the connecting structure, so that the structure is more stable. And because the rib plate has certain thickness, the double image phenomenon can be reduced when the rib plate is arranged in the direction parallel to the lamp tube, and the light-emitting efficiency is improved.
The invention provides a backlight module, comprising: a back plate, a light source, a diffusion plate and a connecting structure; the back plate is arranged at the bottom of the whole backlight module; the light sources are distributed between the back plate and the diffusion plate in an array mode and provide light sources for the whole backlight module; the diffusion plate is arranged opposite to the back plate; the linking structure is arranged between the back plate and the diffusion plate and used for stabilizing the light mixing distance of the backlight module.
According to a preferred embodiment of the present invention, the housing is an opaque hard plate, the light source comprises a plurality of parallel lamps, and the diffuser plate is a glass plate containing a diffusion coating.
According to a preferred embodiment of the present invention, the diffusion plate, the back plate and the engaging structure each include a first end surface and a second end surface, and the engaging structure further includes a first side surface and a second side surface. Wherein the first side surface and the second side surface are respectively provided with a first rib plate and a second rib plate.
According to a preferred embodiment of the present invention, rib plates are disposed on two sides of the connection structure in a direction parallel to the lamp tube. The height of the rib plate is equal to that of the connecting structure. The thickness of the rib plate is smaller than or equal to that of the connecting structure.
According to a preferred embodiment of the present invention, the connection structure is made of a transparent optical material.
According to a preferred embodiment of the present invention, one end of the engaging structure is integrally formed with the diffuser plate or the back plate.
According to a preferred embodiment of the present invention, the other end of the engaging structure is connected to the back plate or the diffusion plate through an optical adhesive.
According to a preferred embodiment of the present invention, the engaging structure is cylindrical or rectangular.
According to a preferred embodiment of the present invention, the backlight module includes any one of the features described above, and the method includes the steps of: s10, providing a back plate or a diffusion plate including a connection structure; s20, installing a light source on the first end face of the back plate or the diffusion plate; s30, providing a back plate or a diffusion plate without a connection structure; and S40, adhering the second end face of the connecting structure to the back plate or the diffusion plate by using optical glue.
According to a preferred embodiment of the present invention, the housing and the diffuser plate do not include the connection structure at the same time.
The light mixing distance of the whole backlight module is stable by adding the integrally formed connecting structure in the back plate or the diffusion plate.
The backlight module and the manufacturing method thereof provided by the embodiments of the present invention are described in detail above, and the principle and the embodiment of the present invention are explained in the present document by applying specific examples, and the description of the embodiments above is only used to help understanding the technical scheme and the core idea of the present invention; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

1. A backlight module, comprising: a back plate, a light source, a diffusion plate and a connecting structure; wherein,
the back plate is arranged at the bottom of the whole backlight module;
the light sources are distributed between the back plate and the diffusion plate in an array mode and provide light sources for the whole backlight module;
the diffusion plate is arranged opposite to the back plate;
the linking structure is arranged between the back plate and the diffusion plate and used for stabilizing the light mixing distance of the backlight module.
2. The backlight module according to claim 1, wherein the back plate is an opaque hard plate, the light source comprises a plurality of parallel lamps, and the diffuser plate is a glass plate containing a diffuser coating.
3. The backlight module according to claim 1, wherein the diffuser plate, the back plate and the engaging structures each comprise a first end surface and a second end surface, and the engaging structures further comprise a first side surface and a second side surface.
4. The backlight module according to claim 1, wherein ribs are disposed on two sides of the connecting structure in parallel to the direction of the light tubes.
5. The backlight module as claimed in claim 4, wherein the connecting structure is made of transparent optical material.
6. The backlight module as claimed in claim 5, wherein one end of the engaging structure is integrally formed with the diffuser plate or the back plate.
7. The backlight module as claimed in claim 5, wherein the other end of the engaging structure is connected to the back plate or the diffusion plate via an optical adhesive.
8. The backlight module as claimed in claim 1, wherein the engaging structure is cylindrical or rectangular.
9. A method of manufacturing a backlight module comprising the features of any of claims 1-8, the method comprising the steps of:
s10, providing a back plate or a diffusion plate including a connection structure;
s20, installing a lamp source;
s30, providing a back plate or a diffusion plate without a connection structure;
and S40, adhering the second end face of the connecting structure to the back plate or the diffusion plate by using optical glue.
10. The method of claim 9, wherein the back plate and the diffuser plate do not simultaneously comprise the engaging structure.
CN201811207875.3A 2018-10-17 2018-10-17 Backlight module and its manufacturing method Pending CN109212830A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201811207875.3A CN109212830A (en) 2018-10-17 2018-10-17 Backlight module and its manufacturing method
PCT/CN2018/115592 WO2020077717A1 (en) 2018-10-17 2018-11-15 Backlight module and manufaturing method therefor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811207875.3A CN109212830A (en) 2018-10-17 2018-10-17 Backlight module and its manufacturing method

Publications (1)

Publication Number Publication Date
CN109212830A true CN109212830A (en) 2019-01-15

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Application Number Title Priority Date Filing Date
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Country Status (2)

Country Link
CN (1) CN109212830A (en)
WO (1) WO2020077717A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110189629A (en) * 2019-06-28 2019-08-30 厦门天马微电子有限公司 A kind of backlight module and display device
CN111429817A (en) * 2020-04-30 2020-07-17 京东方科技集团股份有限公司 Mini L ED module and display device

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CN101000429A (en) * 2007-01-24 2007-07-18 友达光电股份有限公司 Backlight module
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CN204879693U (en) * 2015-08-05 2015-12-16 深圳Tcl新技术有限公司 Straight following formula backlight unit and display

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KR20030089752A (en) * 2002-05-18 2003-11-28 삼성전자주식회사 Liquid crystal display
CN101000429A (en) * 2007-01-24 2007-07-18 友达光电股份有限公司 Backlight module
CN201138407Y (en) * 2007-08-20 2008-10-22 中华映管股份有限公司 Downward backlight module
CN201954497U (en) * 2010-11-30 2011-08-31 康佳集团股份有限公司 Bracket and led backlight module
CN204084213U (en) * 2014-09-11 2015-01-07 深圳Tcl新技术有限公司 Diffuser plate support member and backlight module
CN204879693U (en) * 2015-08-05 2015-12-16 深圳Tcl新技术有限公司 Straight following formula backlight unit and display

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110189629A (en) * 2019-06-28 2019-08-30 厦门天马微电子有限公司 A kind of backlight module and display device
CN111429817A (en) * 2020-04-30 2020-07-17 京东方科技集团股份有限公司 Mini L ED module and display device

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Application publication date: 20190115