CN104676377A - Liquid crystal display device and backlight module thereof - Google Patents
Liquid crystal display device and backlight module thereof Download PDFInfo
- Publication number
- CN104676377A CN104676377A CN201510076297.4A CN201510076297A CN104676377A CN 104676377 A CN104676377 A CN 104676377A CN 201510076297 A CN201510076297 A CN 201510076297A CN 104676377 A CN104676377 A CN 104676377A
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- CN
- China
- Prior art keywords
- backlight module
- hole
- plated
- flexible flat
- circuit board
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- 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.)
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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
Abstract
The invention provides a liquid crystal display device and a backlight module thereof. The backlight module is connected electrically to a complete machine driving circuit board; the complete machine driving circuit board is used for providing driving power supply to the backlight module; the backlight module comprises a flexible flat line, a substrate and a light source which are laminated sequentially; the substrate is provided with a metalized through hole; the light source is connected electrically to the flexible flat line by the metalized through hole; the flexible flat line is connected electrically to the complete machine driving circuit board, the space occupied by the width of a driving circuit on an LED (light emitting diode) light bar in the prior art can be eliminated, the thinned design of the product is benefited, and the original connector on the LED light bar in the prior art can also be eliminated, the electric connection between the LED light bar and the complete machine driving circuit board is realized.
Description
Technical field
The present invention relates to technical field of liquid crystal display, particularly relate to backlight module, also relate to a kind of liquid crystal indicator being provided with backlight module.
Background technology
Existing liquid crystal module display light source mainly relies on the LED lamp bar be arranged in backlight module to provide, LED lamp bar as schematic diagram 1a is common tactic pattern, it mainly comprises PCB 1, connector 2, LED 3 and wire 4, PCB 1 is provided with the circuit pattern of driving LED 3, connector 2 outer connectors as LED 3 drive circuit, LED 3 provides light source for backlight module, and the drive circuit board that wire 4 connects complete machine thinks that LED lamp bar provides power supply.Be connected in series to prevent circuit, LED 3 drive circuit needs to avoid the electrode of LED 3 own, so LED lamp bar needs to reserve certain trace width W in LED 3 side when designing in back of the body frame 5 usually, the size of this width W value depends on driving voltage and LED 3 number of partitions, so when LED 3 number of partitions is more or driving voltage is higher, this W width needs to widen.As shown in Figure 1 b, represent the scheme of installation of traditional LED lamp bar in backlight module, because the existence of W width, its needs occupy certain cabling space on the thickness direction of backlight module, are unfavorable for that product slimming designs.
Summary of the invention
The invention provides a kind of liquid crystal indicator and backlight module thereof, so that the thickness direction solving backlight module in prior art to occupy certain cabling space, be unfavorable for the technical problem that product slimming designs.
For solving the problems of the technologies described above, the present invention adopts a technical scheme: provide a kind of backlight module, institute's backlight module is electrically connected with machine's drive circuit board, machine's drive circuit board is used for providing driving power for backlight module, backlight module comprises the flexible flat, substrate and the light source that stack gradually, substrate is provided with plated-through hole, and light source is electrically connected with flexible flat by plated-through hole, and flexible flat is electrically connected with machine's drive circuit board.
Wherein, flexible flat comprises epithelial membrane, lower epithelium, positive pole flat type copper wire and negative pole flat type copper wire, and epithelial membrane is provided with adhesive layer, and epithelial membrane is by adhesive layer and substrate high-temperature laminating.Lower epithelium and epithelial membrane interval are arranged; Positive pole flat type copper wire is located between epithelial membrane and lower epithelium; Negative pole flat type copper wire to be located between epithelial membrane and lower epithelium and and positive pole flat type copper wire interval arrange.
Wherein, epithelial membrane has first depression and the second depression of placing tin point.
Wherein, plated-through hole comprises and caves in first respectively and second to cave in corresponding the first plated-through hole of arranging and the second plated-through hole.
Wherein, light source comprises chip, anode and negative electrode that can be luminous, and wherein, anode and negative electrode are corresponding with the first plated-through hole and the second plated-through hole respectively to be arranged.
Wherein, the inwall of the first plated-through hole and be equipped with layers of copper with the surface of positive contact, the inwall of the second plated-through hole 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 comprises extended end, and extended end one end is electrically connected with flexible flat, and the other end is electrically connected with machine's drive circuit board.
Wherein, flexible flat is flexible flat cable or flexible PCB.
For solving the problems of the technologies described above, the present invention adopts a technical scheme: a kind of liquid crystal indicator, liquid crystal indicator comprises back of the body frame, liquid crystal module, machine's drive circuit board and the above-mentioned backlight module be located on back of the body frame, and wherein, flexible flat is located on back of the body frame by heat-conducting glue.
The invention has the beneficial effects as follows: the situation being different from prior art, light source in liquid crystal indicator of the present invention and backlight module thereof is electrically connected with described flexible flat by described plated-through hole, drive circuit line width in LED lamp bar can be cancelled in prior art take up room, be of value to product slimming design, and original connector in LED lamp bar can be cancelled in prior art, realize the electric connection between LED lamp bar and machine's drive circuit board.
Accompanying drawing explanation
Fig. 1 a is the partial sectional view of a kind of liquid crystal indicator of prior art;
Fig. 1 b is the left view of LED lamp bar in Fig. 1 a liquid crystal indicator;
Fig. 2 a is the explosive view of backlight module of the present invention;
Fig. 2 b is half parting face structural representation of 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 indicator of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of protection of the invention.
Refer to Fig. 2 a, Fig. 2 a is the explosive view of backlight module of the present invention, and Fig. 2 b is half parting face structural representation of backlight module of the present invention.Backlight module 100 of the present invention is electrically connected with machine's drive circuit board, machine's drive circuit board is not parts of backlight module 100, normally, machine's drive circuit board is parts of liquid crystal indicator, for providing driving power for backlight module 100 and other parts, the flexible flat 10 that backlight module 100 comprises extended end 101 and stacks gradually, substrate 20 and light source 30, substrate 20 is provided with plated-through hole 21, light source 30 is electrically connected with flexible flat 10 by plated-through hole 21, extended end 101 one end is electrically connected with flexible flat 10, the other end is electrically connected with machine's drive circuit board.
Substrate 20 of the present invention possesses insulating properties, and it is with circuit function, and this substrate 20 can be conventional PCB substrate 20.
Flexible flat 10 can be flexible flat cable or flexible PCB, it comprises epithelial membrane 11, lower epithelium 12, positive pole flat type copper wire 13 and negative pole flat type copper wire 14, epithelial membrane 11 is provided with adhesive layer 15, adhesive layer can be PUR, also can be other ebonite, epithelial membrane 11 be by adhesive layer 15 and substrate 20 high-temperature laminating.Lower epithelium 12 and epithelial membrane 11 interval are arranged, positive pole flat type copper wire 13 is located between epithelial membrane 11 and lower epithelium 12, negative pole flat type copper wire 14 to be located between epithelial membrane 11 and lower epithelium 12 and and positive pole flat type copper wire 13 interval arrange, 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 spaced and parallel and in one plane, so during flexible flat 10 horizontal cross-sectional, viewed from sectional view, positive pole flat type copper wire 13 is overlapping with negative pole flat type copper wire 14 together, and material object is not overlapping.Epithelial membrane 11 has first depression 111 and second depression 112 of placing tin point 40, wherein, the height of tin point 40 higher than the degree of depth of the first depression 111 and the second depression 112, namely higher than the outer surface of epithelial membrane 11.Plated-through hole 21 comprises caving in first respectively and 111 and second to cave in 112 corresponding the first plated-through hole 211 and the second plated-through holes 212 arranged.
Light source 30 can be LED, and it comprises chip 31, anode 32 and negative electrode 33 that can be luminous, and wherein, anode 32 and negative electrode 33 are respectively with the first plated-through hole 211 with the second plated-through hole 211 is corresponding arranges.The inwall of the first plated-through hole 211 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 are provided with layers of copper, anode 32 of the present invention is connected with the layers of copper of the first plated-through hole 211 and the second plated-through hole 212 by modes such as welding respectively with negative electrode 33, substrate 20 is provided with insulation welding resisting layer 22, is electrically connected with other hardware for preventing anode 32 and negative electrode 33.
Light source 30 of the present invention can be one or more, and anode 32 and negative electrode 33, first plated-through hole 211 and the second plated-through hole 212, first depression 111 and the second depression 112 can be one or more groups accordingly.
Refer to Fig. 3, Fig. 3 is the processing technology of backlight module of the present invention, and concrete steps are as follows:
S10: adhesive layer 15 is set on the surface of flexible flat 10;
S20: 112 tin point 40 is set in the first depression 111 of flexible flat 10 and the second depression;
S30: by the adhesive layer 15 of high temperature hot pressing hot melt flexible flat 10 and with substrate 20 pressing;
Particularly, after adhesive layer 15 high temperature hot melt, first plated-through hole 211 of substrate 20 and the second plated-through hole 212 correspondence are pressure bonded to the first depression 111 and the second depression 112 of flexible flat 10, realize the pressing of flexible flat 10 and substrate 20, and tin point 40 also can at high temperature melt, to be squeezed on substrate 20 in first plated-through hole 211 and the second plated-through hole 212, reach flexible flat 10 positive pole flat type copper wire 13 and negative pole flat type copper wire 14 respectively with the first plated-through hole 211 of substrate 20 and the electric connection of the second plated-through hole 212, and because the first plated-through hole 211 and the second metal can receive unnecessary tin cream, it can prevent the back side, flexible flat 10 tin point 40 place (lower epithelium 12 surface) from producing local crowning.
S40: light source 30 is welded on substrate 20.
Particularly, anode 32 and negative electrode 33 are welded in respectively the layers of copper with the layers of copper of the first plated-through hole 211 and the second plated-through hole 212, now, anode 32 and negative electrode 33 respectively with the layers of copper of the first plated-through hole 211 and the layers of copper conducting of the second plated-through hole 212, and in upper step S30, the layers of copper of the first plated-through hole 211 and the layers of copper of the second plated-through hole 212 cave in first 111 and second tin point 40 conductings of caving in 112 respectively, and the first depression 111 and the second depression 112 corresponding be respectively positive pole flat type copper wire 13 and negative pole flat type copper wire 14, so make the anode 32 of light source 30 and negative electrode 33 respectively with positive pole flat type copper wire 13 and negative pole flat type copper wire 14 conducting.
See also Fig. 4, Fig. 4 is the part-structure schematic diagram of liquid crystal indicator of the present invention, liquid crystal indicator 200 of the present invention comprises back of the body frame 220, liquid crystal module 230, machine's drive circuit board and the above-mentioned backlight module 100 be located on back of the body frame, wherein, flexible flat 10 is located on back of the body frame 220 by heat-conducting glue 210.
Light source 30 in liquid crystal indicator 200 of the present invention and backlight module 100 thereof is electrically connected with flexible flat 10 by plated-through hole 21, drive circuit line width in LED lamp bar can be cancelled in prior art take up room, be of value to product slimming design, and original connector in LED lamp bar can be cancelled in prior art, realize the electric connection between LED lamp bar and machine's drive circuit board.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. a backlight module, institute's backlight module is electrically connected with machine's drive circuit board, described machine's drive circuit board is used for providing driving power for described backlight module, it is characterized in that, described backlight module comprises the flexible flat, substrate and the light source that stack gradually, described substrate is provided with plated-through hole, and described light source is electrically connected with described flexible flat by described plated-through hole, and described flexible flat is electrically connected with machine's drive circuit board.
2. backlight module according to claim 1, is characterized in that, described flexible flat comprises:
Epithelial membrane, is provided with adhesive layer, and described epithelial membrane is by described adhesive layer and described substrate high-temperature laminating.
Lower epithelium, and described epithelial membrane interval is arranged;
Positive pole flat type copper wire, is located between described epithelial membrane and described lower epithelium;
Negative pole flat type copper wire, to be located between described epithelial membrane and described lower epithelium and and described positive pole flat type copper wire interval arrange.
3. backlight module according to claim 2, is characterized in that, described epithelial membrane has first depression and the second depression of placing tin point.
4. backlight module according to claim 3, is characterized in that, described plated-through hole comprises and caves in described first respectively and described second to cave in corresponding the first plated-through hole of arranging and the second plated-through hole.
5. backlight module according to claim 4, is characterized in that, described light source comprises chip, anode and negative electrode that can be luminous, and wherein, described anode and described negative electrode are respectively with described first plated-through hole with described second plated-through hole is corresponding arranges.
6. backlight module according to claim 5, is characterized in that, the inwall of described first plated-through hole and be equipped with layers of copper with the surface of described positive contact, the inwall of described second plated-through hole and be equipped with layers of copper with the surface of described cathode contacts.
7. backlight module according to claim 6, is characterized in that, described substrate is provided with insulation welding resisting layer.
8. backlight module according to claim 1, is characterized in that, described backlight module also comprises extended end, and described extended end one end is electrically connected with described flexible flat, and the other end is electrically connected with described machine's drive circuit board.
9. backlight module according to claim 1, is characterized in that, described flexible flat is flexible flat cable or flexible PCB.
10. a liquid crystal indicator, it is characterized in that, described liquid crystal indicator comprises the back of the body frame, the liquid crystal module be located on described back of the body frame, described machine's drive circuit board and the backlight module described in claim 1-9 any one, wherein, described flexible flat is located on described back of the body frame by heat-conducting glue.
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 true CN104676377A (en) | 2015-06-03 |
| CN104676377B CN104676377B (en) | 2018-01-30 |
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| 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 |
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| Country | Link |
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| CN (1) | CN104676377B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115542609A (en) * | 2022-10-11 | 2022-12-30 | 厦门天马微电子有限公司 | Light source assembly and backlight module |
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| 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 |
| JP2013089732A (en) * | 2011-10-17 | 2013-05-13 | Nichia Chem Ind Ltd | Semiconductor device |
| CN103672771A (en) * | 2012-08-31 | 2014-03-26 | 日亚化学工业株式会社 | Light-emitting device and method of manufacturing the same |
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2015
- 2015-02-12 CN CN201510076297.4A patent/CN104676377B/en active Active
Patent Citations (7)
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| 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 |
| CN101826593A (en) * | 2009-03-06 | 2010-09-08 | 日本航空电子工业株式会社 | The wiring plate that helps to reduce the thickness of luminaire and have high universalizable |
| 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 |
| JP2013089732A (en) * | 2011-10-17 | 2013-05-13 | Nichia Chem Ind Ltd | Semiconductor device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115542609A (en) * | 2022-10-11 | 2022-12-30 | 厦门天马微电子有限公司 | Light source assembly and backlight module |
| 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 |
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| Publication number | Publication date |
|---|---|
| CN104676377B (en) | 2018-01-30 |
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