CN104676377B - Liquid crystal display device and its backlight module - Google Patents
Liquid crystal display device and its backlight module Download PDFInfo
- Publication number
- CN104676377B CN104676377B CN201510076297.4A CN201510076297A CN104676377B CN 104676377 B CN104676377 B CN 104676377B CN 201510076297 A CN201510076297 A CN 201510076297A CN 104676377 B CN104676377 B CN 104676377B
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- China
- Prior art keywords
- backlight module
- hole
- plated
- flexible flat
- circuit board
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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
- G02F1/133603—Direct backlight with LEDs
-
- 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
- G02F1/133612—Electrical details
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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)
- Liquid Crystal (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention provides a kind of liquid crystal display device and its backlight module, backlight module and machine's drive circuit board electrical connection, machine's drive circuit board is used to provide driving power for backlight module, backlight module includes the flexible flat stacked gradually, substrate and light source, substrate is provided with plated-through hole, light source is electrically connected by plated-through hole with flexible flat, flexible flat and machine's drive circuit board electrical connection, drive circuit line width space-consuming in LED light bar in the prior art can be cancelled, it is beneficial to product slimming design, and original connector in LED light bar in the prior art can be cancelled, realize the electric connection between LED light bar and machine's drive circuit board.
Description
Technical field
The present invention relates to technical field of liquid crystal display, more particularly to backlight module, further relates to one kind and is provided with backlight module
Liquid crystal display device.
Background technology
Existing liquid crystal module display light source, which relies primarily on, is arranged on the LED light bar in backlight module to provide, and such as illustrates
Fig. 1 a LED light bar is common tactic pattern, and it mainly includes PCB 1, connector 2, LED 3 and wire 4, on PCB 1
Driving LED 3 circuit pattern is provided with, then the outer connector as the drive circuits of LED 3, LED 3 are backlight mould to connector 2
Group provides light source, and wire 4 connects the drive circuit board of complete machine to provide power supply for LED light bar.In order to prevent circuit from concatenating, LED
3 drive circuits need to avoid the electrode of LED 3 itself, so LED light bar is usually required when being designed at back frame 5 in the sides of LED 3
Certain trace width W is reserved, the size of this width W values depends on driving voltage and the number of partitions of LED 3, so in LED
3 numbers of partitions are more or when driving voltage is higher, and the W width needs to widen.As shown in Figure 1 b, represent that traditional LED lamp bar is being carried on the back
Scheme of installation in optical mode group, because the presence of W width, its needs occupies certain walk on the thickness direction of backlight module
Space of lines, it is unfavorable for product slimming design.
The content of the invention
The present invention provides a kind of liquid crystal display device and its backlight module, to solve the thickness of backlight module in the prior art
Occupy certain cabling space on direction, be unfavorable for the technical problem of product slimming design.
In order to solve the above technical problems, the present invention uses a technical scheme：Provide a kind of backlight module, backlight module
With machine's drive circuit board electrical connection, machine's drive circuit board is used to provide driving power for backlight module, and backlight module includes
Flexible flat, substrate and the light source stacked gradually, substrate are provided with plated-through hole, and light source passes through plated-through hole and flexibility
Flat wire electrically connects, flexible flat and machine's drive circuit board electrical connection.
Wherein, flexible flat is provided with including epithelial membrane, lower epithelium, positive pole flat type copper wire and negative pole flat type copper wire, epithelial membrane
Adhesive layer, epithelial membrane pass through adhesive layer and substrate high-temperature laminating.Lower epithelium is arranged at intervals with epithelial membrane；Positive pole flat type copper wire is located at upper
Between epithelium and lower epithelium；Negative pole flat type copper wire is located between epithelial membrane and lower epithelium and is arranged at intervals with positive pole flat type copper wire.
Wherein, epithelial membrane has the first depression and the second depression for placing tin point.
Wherein, plated-through hole include with the first depression and second being recessed respectively the first plated-through hole for being correspondingly arranged and
Second plated-through hole.
Wherein, light source includes chip, anode and the negative electrode that can light, wherein, anode and negative electrode respectively with the first metal
Change through hole and the second plated-through hole is correspondingly arranged.
Wherein, the inwall of the first plated-through hole and layers of copper, the second plated-through hole are equipped with the surface of positive contact
Inwall and be equipped with layers of copper with the surface of cathode contacts.
Wherein, substrate is provided with insulation welding resisting layer.
Wherein, backlight module also includes extended end, and extended end one end electrically connects with flexible flat, and the other end drives with complete machine
Dynamic circuit board electrical connection.
Wherein, flexible flat is flexible flat cable or flexible PCB.
In order to solve the above technical problems, the present invention uses a technical scheme：A kind of liquid crystal display device, liquid crystal display dress
Liquid crystal module, machine's drive circuit board and the above-mentioned backlight module including back frame, in back frame are put, wherein, it is flexible flat
Horizontal line is by heat-conducting glue in back frame.
The beneficial effects of the invention are as follows：It is different from the situation of prior art, liquid crystal display device of the invention and its backlight
Light source in module is electrically connected by the plated-through hole with the flexible flat, can cancel LED light bar in the prior art
Upper drive circuit line width space-consuming, it is beneficial to product slimming design, and can cancels former in LED light bar in the prior art
Some connectors, realize the electric connection between LED light bar and machine's drive circuit board.
Brief description of the drawings
Fig. 1 a are a kind of partial sectional views of liquid crystal display device of prior art；
Fig. 1 b are the left views of LED light bar in Fig. 1 a liquid crystal display devices；
Fig. 2 a are the explosive views of the backlight module of the present invention；
Fig. 2 b are the half-sectional cross section structure schematic diagrams of the backlight module of the present invention；
Fig. 3 is the processing technology of backlight module of the present invention；
Fig. 4 is the part-structure schematic diagram of liquid crystal display device of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
Fig. 2 a are referred to, Fig. 2 a are the explosive views of the backlight module of the present invention, and Fig. 2 b are the half of the backlight module of the present invention
Parting face structural representation.The backlight module 100 of the present invention and machine's drive circuit board electrical connection, machine's drive circuit board is not
A part of backlight module 100, normally, machine's drive circuit board be liquid crystal display device a part, for for
Backlight module 100 and other parts provide driving power, and backlight module 100 includes extended end 101 and the flexibility stacked gradually
Flat wire 10, substrate 20 and light source 30, substrate 20 are provided with plated-through hole 21, and light source 30 passes through plated-through hole 21 and flexibility
Flat wire 10 electrically connects, and the one end of extended end 101 electrically connects with flexible flat 10, and the other end is electrically connected with machine's drive circuit board
Connect.
The substrate 20 of the present invention possesses insulating properties, and it has circuit function, and the substrate 20 can be conventional PCB substrate
20。
Flexible flat 10 can be flexible flat cable or flexible PCB, and it includes epithelial membrane 11, lower epithelium 12, just
Pole flat type copper wire 13 and negative pole flat type copper wire 14, epithelial membrane 11 are provided with adhesive layer 15, adhesive layer can be PUR or its
Its ebonite, epithelial membrane 11 pass through adhesive layer 15 and the high-temperature laminating of substrate 20.Lower epithelium 12 is arranged at intervals with epithelial membrane 11, and positive pole is flat
Copper cash 13 be located between epithelial membrane 11 and lower epithelium 12, negative pole flat type copper wire 14 be located between epithelial membrane 11 and lower epithelium 12 and with just
Pole flat type copper wire 13 is arranged at intervals, what deserves to be explained is, if the positive pole flat type copper wire 13 in Fig. 2 b and negative pole flat type copper wire 14 are due to interval
Parallel and in one plane, so during 10 horizontal cross-sectional of flexible flat, positive pole flat type copper wire 13 and negative pole are flat in terms of sectional view
Copper cash 14 is overlapping together, in kind not overlapping.Epithelial membrane 11 has the first depression 111 and the second depression 112 for placing tin point 40,
Wherein, the height of tin point 40 is higher than the first depression 111 and the depth of the second depression 112, the i.e. outer surface higher than epithelial membrane 11.Gold
Categoryization through hole 21 includes the first plated-through hole 211 and second being correspondingly arranged respectively with the first depression 111 and the second depression 112
Plated-through hole 212.
Light source 30 can be LED, and it includes the chip 31, anode 32 and negative electrode 33 that can be lighted, wherein, anode 32 and the moon
Pole 33 is correspondingly arranged with the first plated-through hole 211 and the second plated-through hole 211 respectively.First plated-through hole 211 it is interior
Wall and the surface contacted with anode 32 are provided with layers of copper 213, the inwall of the second plated-through hole 212 and the surface contacted with negative electrode 33
Provided with layers of copper, anode 32 of the invention and negative electrode 33 can by weld etc. mode respectively with the first plated-through hole 211 and second
Plated-through hole 212 layers of copper connection, substrate 20 be provided with insulation welding resisting layer 22, for prevent anode 32 and negative electrode 33 with it is other
Hardware electrically connects.
The light source 30 of the present invention can be one or more, accordingly anode 32 and negative electrode 33, the first plated-through hole 211
Can be one or more groups of with the depression 112 of the second plated-through hole 212, first depression 111 and second.
Referring to Fig. 3, Fig. 3 is the processing technology of backlight module of the present invention, comprise the following steps that：
S10：On the surface of flexible flat 10, adhesive layer 15 is set；
S20：In the first depression 111 of flexible flat 10 and the second depression 112, tin points 40 are set；
S30：The adhesive layer 15 of flexible flat 10 is heated by high temperature hot pressing and pressed with substrate 20；
Specifically, it is after the high temperature of adhesive layer 15 is heated, the first plated-through hole 211 of substrate 20 and the second metallization is logical
Corresponding the first depression 111 and the second depression 112 for being pressure bonded to flexible flat 10 in hole 212, realizes flexible flat 10 and substrate
20 pressing, and tin point 40 can also melt at high temperature, be squeezed into the first plated-through hole 211 and the second metallization on substrate 20
In through hole 212, reach the first metallization of the positive pole flat type copper wire 13 of flexible flat 10 and negative pole flat type copper wire 14 respectively with substrate 20
The electric connection of the plated-through hole 212 of through hole 211 and second, and because the first plated-through hole 211 and the second metal can be inhaled
Receive unnecessary tin cream, it can prevent the back side at the tin point 40 of flexible flat 10 (the lower surface of epithelium 12) from producing local crowning.
S40：Light source 30 is welded on substrate 20.
Specifically, anode 32 and negative electrode 33 are respectively welded in layers of copper and the second metal with the first plated-through hole 211
Change the layers of copper of through hole 212, now, anode 32 and negative electrode 33 metallize with the layers of copper of the first plated-through hole 211 and second respectively
The layers of copper conducting of through hole 212, and in upper step S30, the layers of copper of the first plated-through hole 211 and the second plated-through hole 212
Layers of copper turns on the tin point 40 in the first depression 111 and the second depression 112 respectively, and the first depression 111 and the second 112 points of depression
Not corresponding is positive pole flat type copper wire 13 and negative pole flat type copper wire 14 so that the anode 32 and negative electrode 33 of light source 30 respectively with positive pole
Flat type copper wire 13 and negative pole flat type copper wire 14 turn on.
Also referring to Fig. 4, Fig. 4 is the part-structure schematic diagram of liquid crystal display device of the present invention, liquid crystal of the invention
Showing device 200 includes back frame 220, the liquid crystal module 230 in back frame, machine's drive circuit board and above-mentioned backlight module
100, wherein, flexible flat 10 is by heat-conducting glue 210 in back frame 220.
The present invention liquid crystal display device 200 and its backlight module 100 in light source 30 by plated-through hole 21 with it is soft
Property flat wire 10 electrically connects, and can cancel drive circuit line width space-consuming in LED light bar in the prior art, be beneficial to product
Slimming design, and original connector in LED light bar in the prior art can be cancelled, realize LED light bar and machine's drive circuit
Electric connection between plate.
Embodiments of the invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize this hair
The equivalent structure or equivalent flow conversion that bright specification and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, is included within the scope of the present invention.
Claims (6)
1. a kind of backlight module, backlight module and machine's drive circuit board electrical connection, the machine's drive circuit board are used for for institute
State backlight module provide driving power, it is characterised in that the backlight module include stack gradually flexible flat, substrate with
And light source, the substrate are provided with plated-through hole, the light source is electrically connected by the plated-through hole and the flexible flat
Connect, the flexible flat and machine's drive circuit board electrical connection；
The flexible flat includes：
Epithelial membrane, provided with adhesive layer, the epithelial membrane by the adhesive layer and the substrate high-temperature laminating,
Lower epithelium, it is arranged at intervals with the epithelial membrane；
Positive pole flat type copper wire, between the epithelial membrane and the lower epithelium；
Negative pole flat type copper wire, it is arranged at intervals between the epithelial membrane and the lower epithelium and with the positive pole flat type copper wire；
The backlight module also includes extended end, and described extended end one end integrally electrically connects with the flexible flat, the other end
With the machine's drive circuit board electrical connection；
The epithelial membrane has the first depression and the second depression for placing tin point；
The first metallization that the plated-through hole includes being correspondingly arranged with the described first depression and second depression respectively is logical
Hole and the second plated-through hole, wherein, first plated-through hole and second plated-through hole are unnecessary for receiving
Tin cream, to prevent that the back side produces local crowning at the flexible flat tin point.
2. the backlight module according to claim 1, it is characterised in that the light source include can light chip, anode with
And negative electrode, wherein, the anode and the negative electrode respectively with first plated-through hole and second plated-through hole pair
It should set.
3. backlight module according to claim 2, it is characterised in that the inwall of first plated-through hole and with it is described
The surface of positive contact is equipped with layers of copper, the inwall of second plated-through hole and is equipped with the surface of the cathode contacts
Layers of copper.
4. backlight module according to claim 3, it is characterised in that the substrate is provided with insulation welding resisting layer.
5. backlight module according to claim 1, it is characterised in that the flexible flat is flexible flat cable or soft
Property circuit board.
6. a kind of liquid crystal display device, it is characterised in that the liquid crystal display device includes back frame, the liquid in the back frame
Backlight module described in brilliant module, the machine's drive circuit board and claim 1-5 any one, wherein, the flexibility
Flat wire is by heat-conducting glue in the back frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510076297.4A CN104676377B (en) | 2015-02-12 | 2015-02-12 | Liquid crystal display device and its backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510076297.4A CN104676377B (en) | 2015-02-12 | 2015-02-12 | Liquid crystal display device and its backlight module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104676377A CN104676377A (en) | 2015-06-03 |
| CN104676377B true CN104676377B (en) | 2018-01-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510076297.4A Active CN104676377B (en) | 2015-02-12 | 2015-02-12 | Liquid crystal display device and its backlight module |
Country Status (1)
| Country | Link |
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| CN (1) | CN104676377B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115542609B (en) * | 2022-10-11 | 2024-01-26 | 厦门天马微电子有限公司 | Light source assembly and backlight module |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2681355Y (en) * | 2003-12-10 | 2005-02-23 | 玄基光电半导体股份有限公司 | LED packaging element made by metallic base plate |
| JP4772882B2 (en) * | 2009-03-06 | 2011-09-14 | 日本航空電子工業株式会社 | Wiring board and light emitting device |
| CN102042532A (en) * | 2009-10-15 | 2011-05-04 | 瀚宇彩晶股份有限公司 | A luminous unit, a backlight module and a display device |
| CN201803228U (en) * | 2010-07-07 | 2011-04-20 | 杨东佐 | LED integrated structure |
| JP2012227294A (en) * | 2011-04-18 | 2012-11-15 | Ibiden Co Ltd | Led substrate, light emitting module, manufacturing method of the led substrate, and manufacturing method of the light emitting module |
| JP6010891B2 (en) * | 2011-10-17 | 2016-10-19 | 日亜化学工業株式会社 | Semiconductor device |
| JP6209874B2 (en) * | 2012-08-31 | 2017-10-11 | 日亜化学工業株式会社 | Light emitting device and manufacturing method thereof |
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| Publication number | Publication date |
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| CN104676377A (en) | 2015-06-03 |
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