CN100350312C - Two-dimensional display and its back light module - Google Patents
Two-dimensional display and its back light module Download PDFInfo
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- CN100350312C CN100350312C CNB2004100947845A CN200410094784A CN100350312C CN 100350312 C CN100350312 C CN 100350312C CN B2004100947845 A CNB2004100947845 A CN B2004100947845A CN 200410094784 A CN200410094784 A CN 200410094784A CN 100350312 C CN100350312 C CN 100350312C
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- circuit board
- backlight module
- flexible circuit
- electrically connected
- flat
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Abstract
The present invention relates to a back light module. The present invention comprises an outer frame, a flexible circuit plate and at least one electric connection port, wherein the flexible circuit plate is surrounded by the outer frame, and the electric connection port is arranged on the flexible circuit plate and is used for connecting the flexible circuit plate and an external circuit.
Description
Technical field
The present invention relates to a kind of backlight module, particularly relate to a kind of backlight module of flat-panel screens, it can be saved circuit board space and reduce production costs.
Background technology
With regard to present electronic installation, flexible circuit board (flexible printed circuit board, FPCB) be widely used in electrical connection between the different circuit, major advantage is that it has bent, light and handy characteristic, thus with the inner space that effectively utilizes electronic installation, the carrying out of convenient package program.
Fig. 1 shows existing backlight module 10 synoptic diagram.Backlight module 10 comprises a housing 11, a flexible circuit board 12, light source elements such as (not icons).Generally speaking, flexible circuit board 12 with elongate structure is arranged on the positive F ' of backlight module 10, and the part of flexible circuit board 12 protrudes in housing 11, this outshot is used for being connected with other circuit board in the flat-panel screens, so so that needed electric power of light source and signal to be provided.In addition, the signal that backlight module 10 sent or received also can be sent to via flexible circuit board 12 on other the interface of flat-panel screens.Below will cooperate among Fig. 2 A, Fig. 2 B between other circuit board in flexible circuit board 12 and the flat-panel screens two kinds of connected modes often adopting related description are proposed:
Fig. 2 A shows the circuit board 15 of existing flat-panel screens 100 and the combination of side view of backlight module 10, and Fig. 2 B shows the circuit board 15 of existing flat-panel screens 100 and another combination of side view of backlight module 10.
Shown in Fig. 2 A, flat-panel screens 100 comprises a circuit board 15, and its backlight module 10 is arranged on the circuit board 15.Light source protrudes in the housing of backlight module 10 with flexible circuit board 12, and flexible circuit board 12 is by a connector 16 and connecting circuit plate 15.
Yet, the shortcoming of aforesaid way is that connector 16 costs own are higher and volume is bigger, so will occupy the utilized space of partial circuit plate 15 or flexible circuit board 12, and because assembling process must adopt manual type to carry out, man-hour, cost can't reduce effectively also.
Fig. 2 B represents to adopt scolding tin 17 to weld between the naked copper (not shown) of light source with other circuit board 15 of flexible circuit board 12 and flat-panel screens 100.This mode no doubt can be saved the cost of element, assembles man-hour, cost but still can't reduce.In addition, welding quality is vulnerable to the workman and welds skill degree (for example: draw weldering step), or institutes such as pressure welding parameter, tool parameters, zinc-plated thickness influence, and cause the connection quality wayward.Again, when product needed is keeped in repair or is re-assemblied, flexible circuit board may produce distortion even damage because of superheated, so can't use once again, also can cause simultaneously assembling failure, waste material, increase built-up time and can't effectively reduce problem such as assembly cost.
It should be noted that because flexible circuit board must be connected in the mode that protrudes in housing with between the external circuit, so will cause frame structure rigidity deficiency, distortion, and then influence the picture quality of whole flat-panel screens.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of flat-panel screens and backlight module thereof, its connected mode can save circuit board space, heavy industry easily, save cost, quality control degree is higher and can increases the frame structure intensity of backlight module.
The invention provides a kind of backlight module, comprise a housing, a flexible circuit board and at least one electrical connection port.Flexible circuit board is surrounded by housing.Be electrically connected port and be arranged on the flexible circuit board, be used to connect a flexible circuit board and an external circuit.
In a preferred embodiment, housing comprises at least one opening, and corresponding to being electrically connected port, being electrically connected port is to expose to housing by opening.
Again, being electrically connected port is elastic conductor.
Again, elastic conductor is a metal clips.
Again, being electrically connected port is bending.
Again, being electrically connected port is naked copper.
The present invention also provides a kind of flat-panel screens, comprises that a rigid circuit board, one first is electrically connected port, a backlight module and a display panel.First is electrically connected the surface that port is positioned at rigid circuit board.Backlight module is electrically connected with rigid circuit board.Backlight module comprises that a housing, a flexible circuit board and one second are electrically connected port.Flexible circuit board is surrounded by housing.Second is electrically connected the surface that port is positioned at flexible circuit board, and the first electrical connection port and second is electrically connected port and contacts and then make flexible circuit board and rigid circuit board to electrically connect.Display panel is electrically connected with flexible circuit board.
For above and other objects of the present invention, feature and advantage can be become apparent, a preferred embodiment cited below particularly, and cooperate appended diagram, be described in detail below.
Description of drawings
Fig. 1 is existing backlight module synoptic diagram;
Fig. 2 A is the circuit board of existing flat-panel screens and the combination of side view of backlight module;
Fig. 2 B is the circuit board of existing flat-panel screens and another combination of side view of backlight module;
Fig. 3 A is the front schematic view of first embodiment of backlight module of the present invention;
Fig. 3 B is the schematic rear view of first embodiment of backlight module of the present invention;
Fig. 3 C is the local enlarged diagram of Fig. 3 B;
Fig. 4 is the circuit board of first embodiment of flat-panel screens of the present invention and the combination synoptic diagram of backlight module; And
Fig. 5 is the circuit board of second embodiment of flat-panel screens of the present invention and the combination synoptic diagram of backlight module.
Embodiment
[first embodiment]
Fig. 3 A shows the back surface B synoptic diagram of first embodiment of backlight module 20 of the present invention for the positive F synoptic diagram of first embodiment of backlight module 20 of the present invention, Fig. 3 B.
Because the light source that the present invention is primarily aimed in flat-panel screens or the LCD uses the syndeton of flexible circuit board and the external circuit board to propose to improve, for the annexation between clear expression housing and the flexible circuit board, in Fig. 3 A to Fig. 3 B, omitted other related elements in light source and the flat-panel screens simultaneously.
Shown in Fig. 3 A and Fig. 3 B, backlight module 20 comprises a housing 21, a flexible circuit board 22 and at least one electrical connection port 26.Flexible circuit board 22 is electrically connected with the light source (not shown), to provide electrical power to light source, flexible circuit board 22 is surrounded by housing 21, promptly, housing 21 is not given prominence to or be piercing in to flexible circuit board 22 of the present invention, therefore, do not need on the housing 21, so can increase housing 21 structural strengths for flexible circuit board 22 is provided with any breach.On the back surface B of backlight module 20, be electrically connected port 26 and be arranged on the flexible circuit board 22, be used to connect the rigid circuit board (not icon) of flexible circuit board 22 and an external circuit or flat-panel screens.It should be noted that Fig. 3 B only draws two and is electrically connected port 26, and lays respectively on two ends of flexible circuit board 22, yet the quantity, position, the size that are electrically connected port 26 are not limited to the relevant exposure of present embodiment.
See also Fig. 3 C, the local enlarged diagram of Fig. 3 C displayed map 3B.The back surface B of housing 21 comprises at least one opening 27, is electrically connected port 26 and exposes to housing 21 by opening 27.Be electrically connected port 26 and can be an elastic conductor, for example: metal clips or forniciform metal clips.
Furthermore, Fig. 4 shows the combination synoptic diagram of circuit board 25 and backlight module 20 of first embodiment of flat-panel screens 200 of the present invention.It should be noted that this figure omits other elements such as the last lower casing, display panel of flat-panel screens to make things convenient for illustration, wherein, display panel can be display panels.In the present embodiment, the circuit board of flat-panel screens 200 is a rigid circuit board (PCB) 25, it comprises that one first is electrically connected port 251, it can be naked copper, be arranged at when above-mentioned backlight module 20 on the circuit board 25 of flat-panel screens 200, because the electrical connection port of backlight module 20 (second is electrically connected port) 26 is a metal clips, its opening by housing 21 exposes to housing 21, and give prominence to towards rigid circuit board 25, electrical connection port 26 by backlight module 20 contacts with the naked copper position 251 of rigid circuit board 25, and then flexible circuit board 22 is produced with rigid circuit board 25 be electrically connected.
Present embodiment can save connector or the shared space of weld, also can reduce simultaneously overlap joint connector or soldering required man-hour.The metal clips cost is lower than connector, and quality control degree is also higher.In addition, owing to need be connected between flexible circuit board and the rigid circuit board via welding manner, so make the product heavy industry not have any obstacle, surrounded by housing owing to flexible circuit board simultaneously, there is no the part that exposes to housing, so can save material cost, raising frame structure intensity.
[second embodiment]
Fig. 5 shows the combination synoptic diagram of circuit board 35 and backlight module 30 of the flat-panel screens 300 of second embodiment of the invention.For convenience of description and highlight flexible circuit board of the present invention and rigid circuit board, omitted backlight module 30 other element at this with flat-panel screens 300.
In the present embodiment, backlight module 30 comprises that equally a housing, a panel, a flexible circuit board and at least one second are electrically connected port 33, second is electrically connected port 33 is positioned on the surface of flexible circuit board, and the rigid circuit board 35 of flat-panel screens comprises that one first is electrically connected port 36, present embodiment is with the first embodiment difference: first of rigid circuit board 35 is electrically connected port 36 and is elastic conductor, for example: metal clips or forniciform metal clips, outstanding towards backlight module 30, and the second electrical connection port 33 is a naked copper.The first electrical connection port 36 and the second electrical connection port 33 contact and then the flexible circuit board (not shown)s in the backlight module 30 are electrically connected with the rigid circuit board 35 of flat-panel screens 300.
In sum, under the architecture advances by flexible circuit board of the present invention, be electrically connected port 36 by first and be electrically connected contacting of port 33 with second, can save circuit board space, heavy industry easily, the saving cost, quality control degree is higher and can increase the frame structure intensity of backlight module.
Though disclosed the present invention in conjunction with above preferred embodiment; yet it is not in order to limiting the present invention, anyly is familiar with this operator, without departing from the spirit and scope of the present invention; change and retouching when doing some, so protection scope of the present invention should be with being as the criterion that claim was defined.
Claims (13)
1. backlight module comprises:
One housing has at least one opening;
One flexible circuit board is surrounded by this housing; And
At least one electrical connection port is arranged on this flexible circuit board, and it is corresponding to this opening, and is electrically connected this flexible circuit board and an external circuit via this opening.
2. backlight module as claimed in claim 1, wherein, this electrical connection port is an elastic conductor.
3. backlight module as claimed in claim 2, wherein, this elastic conductor is a metal clips.
4. backlight module as claimed in claim 1, wherein, this electrical connection port is a bending.
5. backlight module as claimed in claim 1, wherein, this electrical connection port is a naked copper.
6. flat-panel screens comprises:
One rigid circuit board;
One first is electrically connected port, is positioned at the surface of this rigid circuit board;
One backlight module is electrically connected with this rigid circuit board, and this backlight module comprises:
One housing has at least one opening;
One flexible circuit board is surrounded by this housing; And
One second is electrically connected port, be positioned at the surface of this flexible circuit board, and it is corresponding to this opening, and connecting this flexible circuit board and an external circuit via this opening, this first is electrically connected port and contacts with this second electrical connection port via this opening and then the rigid circuit board of this flexible circuit board and this is electrically connected; And
One display panel is electrically connected with this flexible circuit board.
7. flat-panel screens as claimed in claim 6, wherein, this second electrical connection port is a bending.
8. flat-panel screens as claimed in claim 6, wherein, first to be electrically connected port be naked copper for this, and this second to be electrically connected port be elastic conductor, outstanding towards this rigid circuit board.
9. flat-panel screens as claimed in claim 8, wherein, this elastic conductor is a metal clips.
10. as claim 6 a described flat-panel screens, wherein, this first electrical connection port is an elastic conductor, and is outstanding towards this backlight module, and this second electrical connection port is a naked copper.
11. flat-panel screens as claimed in claim 10, wherein, this elastic conductor is a metal clips.
12. flat-panel screens as claimed in claim 6, wherein, this first electrical connection port is a bending, and is outstanding towards this backlight module, and this second electrical connection port is a naked copper.
13. flat-panel screens as claimed in claim 6, wherein, this display panel is a display panels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100947845A CN100350312C (en) | 2004-11-18 | 2004-11-18 | Two-dimensional display and its back light module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100947845A CN100350312C (en) | 2004-11-18 | 2004-11-18 | Two-dimensional display and its back light module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1609675A CN1609675A (en) | 2005-04-27 |
| CN100350312C true CN100350312C (en) | 2007-11-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100947845A Active CN100350312C (en) | 2004-11-18 | 2004-11-18 | Two-dimensional display and its back light module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100350312C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100365477C (en) * | 2006-02-16 | 2008-01-30 | 友达光电股份有限公司 | Planar display device |
| CN102013214B (en) * | 2009-09-08 | 2014-12-03 | 群康科技(深圳)有限公司 | Flat panel display and assembling method thereof |
| CN104240609B (en) * | 2013-06-06 | 2017-07-14 | 群创光电股份有限公司 | Display device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1253397A (en) * | 1998-11-06 | 2000-05-17 | 法玛通国际联络公司 | Printed board connecting equipment including connector plug and base socket |
| CN1254105A (en) * | 1998-11-12 | 2000-05-24 | 松下电器产业株式会社 | Liquid crystal display |
| CN2621373Y (en) * | 2003-11-27 | 2004-06-23 | 惠州Tcl移动通信有限公司 | Mobile phone of colour screen |
-
2004
- 2004-11-18 CN CNB2004100947845A patent/CN100350312C/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1253397A (en) * | 1998-11-06 | 2000-05-17 | 法玛通国际联络公司 | Printed board connecting equipment including connector plug and base socket |
| CN1254105A (en) * | 1998-11-12 | 2000-05-24 | 松下电器产业株式会社 | Liquid crystal display |
| CN2621373Y (en) * | 2003-11-27 | 2004-06-23 | 惠州Tcl移动通信有限公司 | Mobile phone of colour screen |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1609675A (en) | 2005-04-27 |
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