CN101131488A - Printing circuit board connecting structure of LCD module - Google Patents
Printing circuit board connecting structure of LCD module Download PDFInfo
- Publication number
- CN101131488A CN101131488A CNA2006101113731A CN200610111373A CN101131488A CN 101131488 A CN101131488 A CN 101131488A CN A2006101113731 A CNA2006101113731 A CN A2006101113731A CN 200610111373 A CN200610111373 A CN 200610111373A CN 101131488 A CN101131488 A CN 101131488A
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- weld
- circuit board
- printed wiring
- wiring board
- flexible printed
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Abstract
The invention relates to the connecting structure of the printing circuit board in LCD module. It includes a double printing circuit board and a single printing circuit board. It is designed by the double copper jointing of some plating hole on double printing circuit board and the through-carved near to the jointing side, so the leading through side on single printing circuit board can match with the structure need to select the reference jointing side to weld.
Description
Technical field
The present invention relates to the connection structure of the flexible printed wiring board of a kind of connection structure of printed circuit board, particularly a kind of LCD MODULE.
Background technology
Because electronic product towards light, thin, short, little requirement, impels the development of many electronic packages all to develop in response to this target, wherein, the use of flexible printed wiring board just meets the demand of modern technologies fully in recent years.Moreover, by the flexibility of uniqueness, but the configuration on the adapted space is finished tridimensional three-dimensional wiring easily, makes its purposes very extensive, especially often be applied in the middle of the liquid crystal display device module, with bridge as electrically connect between different circuit units.
Seeing also " Fig. 1 ", is the syndeton synoptic diagram for the flexible printed wiring board of known liquid crystal display device module.Shown in " Fig. 1 ", liquid crystal display device module 10 mainly comprises a display panels 16, a backlight module 17, one first flexible printed wiring board 13, one second flexible printed wiring board 14 and a mainboard printed circuit board (PCB) 18.
First flexible printed wiring board 13 is provided with a face of weld 11.And second flexible printed wiring board 14 has an extension 15, and extension 15 is provided with a conducting face 12, sees through the welding between conducting face 12 and the face of weld 11, with the effect of the electrically connect of reaching 17 of display panels 16 and backlight modules.
Usually, first flexible printed wiring board 13 is to be the double-sided printed-circuit board structure, and with second flexible printed wiring board, 14 junctions only in a face of weld 11 of first flexible printed wiring board, 13 Shu sides; Second flexible printed wiring board 14 mainly adopts the double-sided printed-circuit board structure, and its both sides all have a conducting face 12, and this two conducting face 12 all can in order to face of weld 11 solder bond.
Reaching shown in " Fig. 2 B " as " Fig. 2 A ", is syndeton sectional view and the vertical view that shows second flexible printed wiring board of first flexible printed wiring board of known double-sided printed-circuit board structure and double-sided printed-circuit board structure.Be respectively equipped with several first weld pads 21 and second weld pad 22 on face of weld 11 and the conducting face 12, wherein the area of first weld pad 21 can be greater than, be equal to or less than second weld pad, 22 areas.The accompanying drawing that present embodiment discloses be for first weld pad, 21 areas greater than second weld pad, 22 areas.During weld job, select second weld pad 22 on arbitrary conducting face 12 to be in contact with one another according to topology requirement corresponding to first weld pad 21 on the face of weld 11, because first weld pad, 21 areas are big than second weld pad, 22 areas, so both contact the back first weld pad 21 still stay a teat 21a, scolding tin 23 just by this teat 21a combine with non-contacting second weld pad 22.In addition, be positioned at part scolding tin on first weld pad 21 by being located at plated-through-hole (the Plated Through Hole on second weld pad 22; PTH) spill on opposite side second weld pad 22.
Though above-mentioned welded structure is convenient to welding processing,, but relatively improve production cost because of second flexible printed wiring board of double-sided printed-circuit board structure costs an arm and a leg.
Therefore, for saving material cost, known manner is to change second flexible printed wiring board of adopting the single-clad board structure, and according to the difference of mode of connection, its syndeton has following two kinds of aspects usually.
Reaching shown in " Fig. 3 B " as " Fig. 3 A ", is first syndeton sectional view and the vertical view that shows second flexible printed wiring board of first flexible printed wiring board of known double-sided printed-circuit board structure and single-clad board structure respectively.Second weld pad 22 that is positioned on second flexible printed wiring board directly contacts with first weld pad, 21 right and wrong on being positioned at first flexible printed wiring board, promptly second weld pad 22 and first weld pad 21 all are positioned at the same side of flexible printed wiring board, during weld job, utilize scolding tin 23 to connect the teat 21a and second weld pad 22 of first weld pad 21.Yet whether the welded intensity of this kind is apt, will definitely become the big secret worry of one on the product yield.Be generally and make this welded structure have suitable weld strength, enough last tin amounts just must be provided, thereby often cause tin sweat(ing) excessive, cause the problem on product assembling or the apparent size; Otherwise, if go up the tin quantity not sufficient, then easily cause the welding section too small, enough weld strengths can't be provided, easily because of the external force effect produces solder crack, it is bad to cause electric connection.
Reaching shown in " Fig. 4 B " as " Fig. 4 A ", is second syndeton sectional view and the vertical view that shows second flexible printed wiring board of first flexible printed wiring board of known double-sided printed-circuit board structure and single-clad board structure respectively.Be different from above-mentioned " Fig. 3 A " and reach the connected mode shown in " Fig. 3 B ", second weld pad 22 and first weld pad 21 are to adopt the mode that directly contacts and the weld job that carries out.For make be sandwiched in face of weld 11 and conducting face 12 between scolding tin 23 reach molten condition; hereat must improve welding temperature and prolong weld interval; but the protective seam that must see through flexible printed wiring board because of heat energy transmits; it is burned black often to cause circuit board to burn, and because of scolding tin 23 be to be positioned between two weld pads, in the welding process; the fusion situation of scolding tin 23 is difficult for getting a glimpse of; the rosin joint situation is so that often take place in institute, causes electrically connecting bad, and then influences the product yield.
Summary of the invention
In view of the above-mentioned problems, fundamental purpose of the present invention is to provide a kind of syndeton of flexible printed wiring board of liquid crystal display device module, so as to reaching the problem that reduces cost and solve rosin joint and weld strength deficiency, and then promotes and produces yield.
Therefore, for reaching above-mentioned purpose, the invention provides a kind of syndeton of flexible printed wiring board of liquid crystal display device module, it comprises one first flexible printed wiring board, and one second flexible printed wiring board.This first flexible printed wiring board is to be a two-sided printed circuit board arrangement, and this second flexible printed wiring board then is a single-clad board structure.And this first and second flexible printed wiring board can be a flexible copper foil substrate.
This first flexible printed wiring board has two face of weld and a hollow-out parts.This face of weld is made of conductor material, and as metal material, in addition, this face of weld more comprises several weld pads, and this weld pad is provided with several plated-through-holes.And this hollow-out parts configuration can be a concave groove or a shape of the mouth as one speaks groove.
This second flexible printed wiring board has an extension, and is provided with a conducting face in this extension end, and this conducting face is made of conductor material, as metal material, and has several weld pads on this conducting face.
Wherein the pad area on this face of weld can greater than, be equal to or less than the pad area on this conducting face.And conducting face can directly be selected to be connected with pairing face of weld, or passes through hollow-out parts from a side of first flexible printed wiring board and be connected with the corresponding face of weld of opposite side.
See through the syndeton design of first flexible printed wiring board of the present invention and second flexible printed wiring board, the conducting face of second flexible printed wiring board, the structural demand of visible liquid crystal display apparatus module, pass through hollow-out parts and select the face of weld of corresponding first flexible printed wiring board to weld, so as to convenient weld job and then lifting prouctiveness; In addition, by the effect of plated-through-hole, can make that scolding tin can the deep enough first flexible printed wiring board plated-through-hole in and obtain good soldering effect, increase the weld strength between first flexible printed wiring board and second flexible printed wiring board.
Relevant characteristics and implementation of the present invention, conjunction with figs. is described in detail as follows as most preferred embodiment now.
Description of drawings
Fig. 1 is the syndeton synoptic diagram for the flexible printed wiring board of known liquid crystal display device module;
Fig. 2 A and Fig. 2 B are respectively the syndeton sectional view and the vertical view of second flexible printed wiring board of first flexible printed wiring board of known double-sided printed-circuit board and double-sided printed-circuit board;
Fig. 3 A and Fig. 3 B are the first syndeton synoptic diagram for second flexible printed wiring board of first flexible printed wiring board of known double-sided printed-circuit board and single-clad board;
Fig. 4 A and Fig. 4 B are the second syndeton synoptic diagram for second flexible printed wiring board of first flexible printed wiring board of known double-sided printed-circuit board and single-clad board;
Fig. 5 A and Fig. 5 B are the first embodiment synoptic diagram for the syndeton of the flexible printed wiring board of liquid crystal display device module of the present invention;
Fig. 6 is the second embodiment synoptic diagram for the syndeton of the flexible printed wiring board of liquid crystal display device module of the present invention; And
Fig. 7 A, Fig. 7 B, Fig. 7 C and Fig. 7 D have first flexible printed wiring board of concave groove shape hollow-out parts and the syndeton synoptic diagram of second flexible printed wiring board for the present invention.
Symbol description
10 liquid crystal display device modules, 11 face of weld
12 conducting faces, 13 first flexible printed wiring boards
14 second flexible printed wiring boards, 15 extensions
16 display panels, 17 backlight modules
18 mainboard printed circuit board (PCB)s, 21 first weld pads
22 second weld pad 21a teats
23 scolding tin, 24 plated-through-holes
31 hollow-out parts
Embodiment
Seeing also " Fig. 5 A ", is the syndeton first embodiment synoptic diagram for the flexible printed wiring board of liquid crystal display device module of the present invention.Shown in " Fig. 5 A ", the syndeton of the flexible printed wiring board of liquid crystal display device module of the present invention comprises one first flexible printed wiring board 13 and one second flexible printed wiring board 14.First flexible printed wiring board 13 is to be a two-sided printed circuit board arrangement, and second flexible printed wiring board 14 then is a single-clad board structure.First flexible printed wiring board 13 and second flexible printed wiring board 14 all are flexible copper foil substrate.Wherein, first flexible printed wiring board 13 is a panel flexible printed wiring board, connects display panels and mainboard printed circuit board (PCB) (figure does not show) to finish the signal transmission; Second flexible printed wiring board 14 is a light source flexible printed wiring board, and light source on the electric connection backlight module (figure does not show) and panel flexible printed wiring board are with the carrier as circuit.
First flexible printed wiring board 13 is in having two face of weld 11 and part around a concave groove shape hollow-out parts 31 of this two face of weld 11, and wherein, it is one tongue-shaped that face of weld 11 is, and adjacent with hollow-out parts 31.In addition, face of weld 11 also comprises several first weld pads 21 that are made of metal material, and first weld pad 21 is provided with several plated-through-holes 24 (the PlatedThrough Hole that runs through first weld pad 21 and first flexible printed wiring board 13; PTH).Moreover first weld pad 21 can be metal materials such as copper, tin, nickel, gold, aluminium.
Second flexible printed wiring board 14 has an extension, and has a conducting face 12 in the extension end, constituted by copper material, it can be located at the upper surface or the lower surface of second flexible printed wiring board 14, comprises several second weld pads 22 again on each conducting face 12.
Shown in " Fig. 5 B ", be to be the present invention's first flexible printed wiring board 13 side views, owing to be positioned at concave groove shape hollow-out parts 31 special on first flexible printed wiring board 13, the characteristic of collocation flexible circuit board causes tongue-shaped face of weld 11 to can be arbitrary to the both sides deflection of first flexible printed wiring board 13 and is positioned at Different Plane with first flexible printed wiring board 13.
Wherein first weld pad, 21 areas on the face of weld 11 are greater than second weld pad, 22 areas on the conducting face 12.And conducting face 12 can be selected directly to contact with corresponding face of weld 11 or contact with the mode that penetrated hollow-out parts 31 face of weld 11 corresponding with another, and second weld pad 22 is connected with first weld pad 21 on the face of weld.Finish when weld job, the part scolding tin that is positioned on second weld pad 22 spills into first weld pad 21 on the opposite side face of weld 11 by being located at plated-through-hole 24 on first weld pad 21.At this moment, this hollow-out parts 31 still can provide another kind of function, promptly when soldering tin amount for a long time, part scolding tin overflows and passes this hollow-out parts 31 and be connected with the face of weld 11 of another side.That is to say, two lip-deep first weld pads 21 of first flexible printed wiring board 13 all are coated with tin to small part, add the tin that passes plated-through-hole 24, make the long-pending increase of the surface in contact of winning between weld pad 21, second weld pad 22 and the tin, effectively increase the weld strength between first flexible printed wiring board 13 and second flexible printed wiring board 14.In like manner, this effect be applicable to following for several embodiment.
Seeing also " Fig. 6 ", is the syndeton second embodiment synoptic diagram for the flexible printed wiring board of liquid crystal display device module of the present invention.Shown in " Fig. 6 ", the syndeton of the flexible printed wiring board of liquid crystal display device module of the present invention comprises one first flexible printed wiring board 13, and one second flexible printed wiring board 14.The maximum difference of the present embodiment and first embodiment is hollow-out parts 31 in the present embodiment for being positioned at a shape of the mouth as one speaks groove of face of weld 11 1 sides, and face of weld 11 is to be positioned at same plane with first flexible printed wiring board 13, deflection arbitrarily.
Present embodiment first flexible printed wiring board 13 has two face of weld 11 and a shape of the mouth as one speaks groove shape hollow-out parts 31, wherein, face of weld 11 is constituted by copper material, and it is to be positioned at same plane and deflection arbitrarily with first flexible printed wiring board 13, and adjacent with hollow-out parts 32.In addition, face of weld 11 more comprises several first weld pads 21, and first weld pad 21 is provided with several plated-through-holes 24.
And second flexible printed wiring board 14 has an extension, and has a conducting face 12 in the extension end.Comprise several second weld pads 22 on the conducting face 12.The situation that is connected of first flexible printed wiring board 13 and second flexible printed wiring board 14 among first embodiment and second embodiment below will be described simultaneously with the syndeton conjunction with figs. among first embodiment.
Shown in " Fig. 7 A " to " Fig. 7 D ", be to be first flexible printed wiring board of concave groove shape hollow-out parts of the present invention and the preferred embodiment of the second flexible printed wiring board syndeton.The face of weld 11 of first flexible printed wiring board 13 and the conducting face 12 of second flexible printed wiring board 14 can be in response to the different structure designs of 14 of first flexible printed wiring board 13 and second flexible printed wiring boards, and have multiple different connected mode.
Shown in " Fig. 7 A ", the conducting face 12 of second flexible printed wiring board 14 is to be located at upper surface, and it can directly be connected with the face of weld 11 that is positioned at first flexible printed wiring board, 13 lower surfaces.
Shown in " Fig. 7 B ", the conducting face 12 of second flexible printed wiring board 14 is located at lower surface, it can cooperate the configuration of first flexible printed wiring board 13, around the upper surface to first flexible printed wiring board 13, and interconnects with the face of weld 11 that is positioned at first flexible printed wiring board, 13 upper surfaces.
Shown in " Fig. 7 C ", be located at the conducting face 12 of second flexible printed wiring board, 14 upper surfaces, by the design of hollow-out parts 31, can pass hollow-out parts 31 from the upper surface of first flexible printed wiring board 13 and be connected with the face of weld 11 that is positioned at first flexible printed wiring board, 13 lower surfaces.
Shown in " Fig. 7 D ", be located at the conducting face 12 of second flexible printed wiring board, 14 lower surfaces, it can be by the lower surface of first flexible printed wiring board 13, passes hollow-out parts 31 and is connected with the face of weld 11 that is positioned at first flexible printed wiring board, 13 upper surfaces.
See through the syndeton of the flexible printed wiring board of liquid crystal display device module of the present invention, when carrying out weld job, scolding tin can be by the effect of plated-through-hole, go deep into first flexible printed wiring board inside and obtain good soldering effect, to strengthen the strength structure of weld, avoid producing the situation of rosin joint and dry joint on the known technology.In addition, see through hollow-out parts design unique on first flexible printed wiring board, so that conducting face can select pairing face of weld to connect according to the demand on the configuration arbitrarily.
Though the present invention with above-mentioned preferred embodiment openly as above; right its is not in order to limit the present invention; any have know the knowledgeable usually; without departing from the spirit and scope of the present invention; when can doing a little change and retouching, thus protection scope of the present invention fibrous root according to this instructions appended claim defined is as the criterion.
Claims (11)
1. the connecting structure of printed circuit board of a liquid crystal display device module is characterized in that, comprises:
One two-sided printed circuit board (PCB) has two face of weld and part and is surrounded on this two face of weld hollow-out parts on every side, and respectively this face of weld comprises several first weld pads, and those first weld pads are provided with several plated-through-holes; And
One single-clad board, it has an extension, this extension end has a conducting face, this conducting bread contains several second weld pads, those second weld pads with welding manner be located at one of them those first weld pads of this two face of weld and be connected.
2. the connecting structure of printed circuit board of liquid crystal display device module as claimed in claim 1, it is characterized in that, this conducting face of this single-clad board is to be passed through this hollow-out parts and contacted with corresponding this face of weld of opposite side by a side of this double-sided printed-circuit board, and those second weld pads are connected with those first weld pads on this face of weld.
3. the connecting structure of printed circuit board of liquid crystal display device module as claimed in claim 1 is characterized in that, this two face of weld and this double-sided printed-circuit board are positioned at Different Plane.
4. the connecting structure of printed circuit board of liquid crystal display device module as claimed in claim 1 is characterized in that, this double-sided printed-circuit board and this single-clad board are respectively a flexible printed wiring board.
5. the connecting structure of printed circuit board of liquid crystal display device module as claimed in claim 4 is characterized in that, this double-sided printed-circuit board and this single-clad board are respectively a flexible copper foil substrate.
6. the connecting structure of printed circuit board of liquid crystal display device module as claimed in claim 4, it is characterized in that, this liquid crystal display device module comprises a display pannel, and this double-sided printed-circuit board is the panel flexible printed wiring board for electrically connecting with this display pannel.
7. the connecting structure of printed circuit board of liquid crystal display device module as claimed in claim 4, it is characterized in that, liquid crystal display device module comprises a backlight module, and this backlight module has a light source, and this single-clad board is the light source flexible printed wiring board for electrically connecting with this light source.
8. the connecting structure of printed circuit board of liquid crystal display device module as claimed in claim 1 is characterized in that, this hollow-out parts is a concave groove or a shape of the mouth as one speaks groove.
9. the connecting structure of printed circuit board of liquid crystal display device module as claimed in claim 1 is characterized in that, those first weld pads are made of metal material.
10. the connecting structure of printed circuit board of liquid crystal display device module as claimed in claim 9 is characterized in that, this metal material is to be copper, tin, nickel, gold or aluminium.
11. the connecting structure of printed circuit board of liquid crystal display device module as claimed in claim 1 is characterized in that, this this single-clad board has a upper surface and lower surface, this conducting face be located at this upper surface and lower surface one of them.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101113731A CN100492112C (en) | 2006-08-24 | 2006-08-24 | Printing circuit board connecting structure of LCD module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101113731A CN100492112C (en) | 2006-08-24 | 2006-08-24 | Printing circuit board connecting structure of LCD module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101131488A true CN101131488A (en) | 2008-02-27 |
| CN100492112C CN100492112C (en) | 2009-05-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101113731A Expired - Fee Related CN100492112C (en) | 2006-08-24 | 2006-08-24 | Printing circuit board connecting structure of LCD module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100492112C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104103222A (en) * | 2013-04-01 | 2014-10-15 | 群创光电股份有限公司 | Display module and display device comprising same |
| CN106814484A (en) * | 2016-12-26 | 2017-06-09 | 友达光电股份有限公司 | Display device |
| CN107272285A (en) * | 2017-07-04 | 2017-10-20 | 京东方科技集团股份有限公司 | Display module and electronic installation |
| WO2019228361A1 (en) * | 2018-05-31 | 2019-12-05 | 京东方科技集团股份有限公司 | Display device and flexible printed circuit |
-
2006
- 2006-08-24 CN CNB2006101113731A patent/CN100492112C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104103222A (en) * | 2013-04-01 | 2014-10-15 | 群创光电股份有限公司 | Display module and display device comprising same |
| CN106814484A (en) * | 2016-12-26 | 2017-06-09 | 友达光电股份有限公司 | Display device |
| CN107272285A (en) * | 2017-07-04 | 2017-10-20 | 京东方科技集团股份有限公司 | Display module and electronic installation |
| WO2019228361A1 (en) * | 2018-05-31 | 2019-12-05 | 京东方科技集团股份有限公司 | Display device and flexible printed circuit |
| US11221525B2 (en) | 2018-05-31 | 2022-01-11 | Beijing Boe Technology Development Co., Ltd. | Display device and flexible circuit board |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100492112C (en) | 2009-05-27 |
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Application publication date: 20080227 Assignee: United Win (China) Technology Ltd. Assignor: Shenghua Science and Technology Co., Ltd. Contract record no.: 2012990000589 Denomination of invention: Printing circuit board connecting structure of LCD module Granted publication date: 20090527 License type: Exclusive License Record date: 20120813 |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090527 Termination date: 20200824 |