CN100435000C - Fixation structure and backlight module using the same - Google Patents
Fixation structure and backlight module using the same Download PDFInfo
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- CN100435000C CN100435000C CNB2006101705128A CN200610170512A CN100435000C CN 100435000 C CN100435000 C CN 100435000C CN B2006101705128 A CNB2006101705128 A CN B2006101705128A CN 200610170512 A CN200610170512 A CN 200610170512A CN 100435000 C CN100435000 C CN 100435000C
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- backboard
- grabs
- backlight module
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Abstract
The invention discloses a fixed structure and a backlight module using the structure to fix the circuit board. The circuit board includes: several opening holes, an upper surface and a lower surface. The fixed structure includes: a back board and several grabs, the back board contains an abutted surface. The grabs are mounted on the abutted surface. The grabs through the opening holes to make the abutted surface abut the lower surface, the grabs can move to the wall of hole with opening holes and lock the upper surface to fix the circuit board on the back board.
Description
Technical field
The present invention relates to a kind of fixed sturcture, particularly relate to a kind of fixed sturcture that is applied in the backlight module.
Background technology
At general liquid crystal indicator (Liquid Crystal Display device, LCD device) in the backlight module, utilize cold cathode fluorescent lamp (Cold Cathode Fluorescent Lamp, CCFL) or light emitting diode (Light Emitting Diode LED) is used as backlight.In the liquid crystal indicator that utilizes light emitting diode as backlight, the modal practice is that light emitting diode is welded in a printed circuit board (PCB) (Printed Circuit Board, PCB) on, and utilize screw that printed circuit board (PCB) is locked on the backboard (back plate) of backlight module.
Because printed circuit board (PCB) must fit tightly with backboard, the heat that light emitting diode is dispersed conducts to backboard smoothly, to guarantee light emitting diode the problem of cause thermal damage can not take place.Therefore printed circuit board (PCB) needs smooth securing on the backboard.But the known mode of utilizing a plurality of screws locking printed circuit board (PCB)s has not only increased manufacturing cost, has more prolonged the assembling man-hour of liquid crystal indicator and has reduced production efficiency.When especially locking a plurality of screw, the phenomenon of lock screw takes place to leak easily.Even only a spot of screw does not lock to printed circuit board (PCB), also can make printed circuit board (PCB) entirely to secure on the backboard.When more being difficult in addition guarantee that each screw secures on the circuit board, for the consistance of the circuit board application of force.This has just caused product quality decline, causes yield rate to reduce.
Therefore, how firm and efficient with smooth being fixed on the backboard of printed circuit board (PCB), be an important topic of demanding urgently at present studying.
Summary of the invention
The object of the present invention is to provide a kind of fixed sturcture and use its backlight module.Utilization is arranged at the structural design of a plurality of perforates of a plurality of grabs on the backboard and a circuit board, with smooth being fixed on the backboard of circuit board.
To achieve these goals, the invention provides a kind of fixed sturcture, in order to fix a circuit board.This circuit board has a plurality of perforates, a upper surface and a lower surface.Fixed sturcture comprises a backboard and a plurality of grab.Backboard has a binding face.These a little grabs are arranged on the binding face.These a little grabs pass these a little perforates so that binding face fits in lower surface, and these a little grabs are moved towards the hole wall of these a little perforates and are sticked in upper surface.So as to circuit board is fixed on the backboard.
To achieve these goals, the present invention also provides a kind of backlight module, comprises a circuit board, a luminescence component and a fixed sturcture.Circuit board has a plurality of perforates, a upper surface and a lower surface.Luminescence component is arranged on the circuit board, in order to a backlight to be provided.Fixed sturcture is in order to fixing circuit board, and comprises a backboard and a plurality of grab.Backboard has a binding face.These a little grabs are arranged on the binding face.These a little grabs pass these a little perforates so that binding face fits in lower surface and make these a little grabs move and be sticked in upper surface towards the hole wall of these a little perforates, are fixed on the backboard so as to making circuit board.
To achieve these goals, the present invention also provides a kind of backlight module, comprises a light-source structure and a backboard.Light-source structure comprises a circuit board and a luminescence component.Circuit board has several perforates, a upper surface and a lower surface, and luminescence component is arranged on the circuit board, in order to a backlight to be provided.Backboard has a fixed sturcture and a binding face, and fixed sturcture is in order to fixing circuit board.Fixed sturcture comprises a plurality of grabs, and these a little grabs are arranged on the binding face.These a little grabs pass these a little perforates so that binding face fits in lower surface, and make these a little grabs move and be sticked in upper surface towards the hole wall of these a little perforates, so as to making circuit board be fixed on the backboard.
Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Description of drawings
Figure 1A is the synoptic diagram of the backlight module of first embodiment of the invention;
Figure 1B is the synoptic diagram of circuit board after passing a distance on the backboard of Figure 1A;
Fig. 1 C is the stereographic map of Figure 1B;
Fig. 2 is the synoptic diagram of the backlight module of second embodiment of the invention;
Fig. 3 A is the synoptic diagram of the backlight module of third embodiment of the invention; And
Fig. 3 B is the synoptic diagram of circuit board after passing a distance on the backboard of Fig. 3 A.
Wherein, Reference numeral:
20,30,40 backlight modules
21,411 circuit boards
21a, 411a upper surface
21b, 411b lower surface
21c, 411c perforate
22,412 luminescence components
23,33,421 fixed sturctures
26,46 gaps
41 light-source structures
231,42 backboards
231a, 42a binding face
232,332,422 grabs
232a clamping face
The 232b curved surface
332a clamping projection
The 411d hole wall
D1, d4 distance
H1, h2, h4 height
W1, w4 thickness
Embodiment
First embodiment please refer to Figure 1A, is the synoptic diagram of the backlight module of first embodiment of the invention.Backlight module 20 comprises a circuit board 21, a luminescence component 22 and a fixed sturcture 23.Circuit board 21 has a plurality of perforate 21c, a upper surface 21a and a lower surface 21b.Luminescence component 22 is arranged on the circuit board 21, in order to a backlight to be provided.Fixed sturcture 23 comprises a backboard (backplate) 231 and a plurality of grab 232 in order to fixing circuit board 21.Backboard 231 has a binding face 231a.These a little grabs 232 are arranged on the binding face 231a, in order to clamping circuit board 21.These a little grabs 232 pass these a little perforate 21c so that binding face 231a fits in lower surface 21b.Please also refer to Figure 1B and Fig. 1 C, Figure 1B is the synoptic diagram of circuit board after passing a distance on the backboard of Figure 1A, and Fig. 1 C is the stereographic map of Figure 1B.Make circuit board 21 on backboard 231, pass one, so that these a little grabs 232 move and be sticked in upper surface 21a towards the hole wall of this a little perforate 21c, so as to circuit board 21 is fixed on the backboard 231 apart from d1.
In addition, each grab 232 has a curved surface 232b and a clamping face 232a.Curved surface 232b is connected in the leading edge of clamping face 232a, and when each grab 232 clamping circuit board 21, circuit board 21 moves to clamping face 232a along curved surface 232b.And clamping face 232a is slightly less than the thickness w1 of circuit board 21 to the height h1 of backboard 231.Therefore when each grab 232 clamping circuit board 21, clamping face 232a is resisted against the upper surface 21a of circuit board 21.This moment, each grab 232 forced in upper surface 21a, in order to circuit board 21 closely is resisted against backboard 231, made 231 of circuit board 21 and backboards not produce gap 26 (gap 26 is illustrated among Figure 1A).
In the present embodiment, the width of these a little perforate 21c equals the width of these a little grabs 232 at least, makes these a little grabs 232 can pass this a little perforate 21c.The material of this backboard 231 for example is a metal material, in order to enough anchorage forces to be provided, avoids backlight module 20 crooked because of being subjected to the external force effect, guarantees that the phenomenon of warpage can not take place circuit board 21.The structure that these a little grabs 232 and backboard 231 can be one of the forming can reduce manufacturing cost.And luminescence component 22 for example be a light emitting diode (Light Emiting Diode, LED).
In the backlight module 20 of present embodiment, these a little grabs 232 are passed this a little perforate 21c, and with circuit board 21 displacement d1 on backboard 231.Thus, because each identical with width respectively perforate 21c collocation of each grab 231 makes circuit board 21 that the phenomenon of sliding can not take place on backboard 231.And because clamping face 232a to the thickness w1 that the height h1 of backboard is slightly less than circuit board 21, makes circuit board 21 closely be resisted against backboard 231.Thus, reach with circuit board 21 firm and smooth be fixed in purpose on the backboard 231.
Second embodiment please refer to Fig. 2, is the synoptic diagram of the backlight module of second embodiment of the invention.Backlight module 30 comprises a circuit board 21, a luminescence component 22 and a fixed sturcture 33.Fixed sturcture 33 is in order to fixing circuit board 21, and fixed sturcture 33 comprises a backboard 231 and a plurality of grab 332.The backlight module 30 of present embodiment and the backlight module 20 of above-mentioned first embodiment, difference is the design of these a little grabs 332, all the other something in common are no longer given unnecessary details.
In the present embodiment, each grab 332 has a clamping salient point 332a, clamping salient point 332a is slightly less than the thickness w1 of circuit board 21 to the height h2 of backboard 231, and therefore when each grab 332 clamping circuit board 21, clamping salient point 332a is resisted against the upper surface 21a of circuit board 21.This moment, each grab 332 forced in upper surface 21a by clamping salient point 332a, in order to circuit board 21 closely is resisted against backboard 231.
In the backlight module 30 of present embodiment, these a little grabs 332 pass this a little perforate 21c, and utilize clamping projection 332a to replace the upper surface 21a of circuit board 21, with circuit board 21 firm being fixed on the backboard 231.
The 3rd embodiment please refer to Fig. 3 A, is the synoptic diagram of the backlight module of third embodiment of the invention.Backlight module 40 comprises a light-source structure 41 and a backboard 42.Light-source structure 41 comprises a circuit board 411 and a luminescence component 412.Circuit board 411 has several perforates 411c, a upper surface 411a and a lower surface 411b.Luminescence component 412 is arranged on the circuit board 411, in order to a backlight to be provided, luminescence component for example be light emitting diode (Light Emitting Diode, LED).Backboard 42 has a fixed sturcture 421 and a binding face 42a, and fixed sturcture 421 is in order to fixing circuit board 411.Fixed sturcture 421 comprises a plurality of grabs 422.These a little grabs 422 are arranged on the binding face 42a, in order to clamping circuit board 411.These a little grabs 422 pass these a little perforate 411c so that binding face 42a fits in lower surface 411b.Please also refer to Fig. 3 B, be the synoptic diagram of circuit board after passing a distance on the backboard of Fig. 3 A.Make circuit board 411 on backboard 42, pass one, so that these a little grabs 422 move and be sticked in upper surface 411a towards the hole wall 411d of these a little perforate 411c, so as to making circuit board 411 be fixed on the backboard 42 apart from d4.
The hole wall 411d of each perforate 411c is a curved surface, and the height h4 of each grab 422 is slightly less than the thickness w4 of circuit board 411.When each grab 422 clamping circuit board 411, each grab 422 moves to upper surface 411a along curved surface, and each grab 422 forces in upper surface 411a, in order to circuit board 411 closely is resisted against backboard 42, make 42 of circuit board 411 and backboards not produce gap 46 (gap 46 is illustrated among Fig. 3 A).The width of these a little perforate 411c equals the width of these a little grabs 422 at least, makes these a little grabs 422 can pass this a little perforate 411c.Backboard 42 for example is a metal material, in order to enough anchorage forces to be provided, makes the circuit board 411 of backlight module 40 can not bend because of being subjected to the external force effect, or even the phenomenon of fracture damage.Can guarantee that so light-source structure 41 can provide the backlight of homogenising.
In the backlight module 40 of present embodiment, these a little grabs 422 are passed these a little perforate 411c and are connected in circuit board 411, make light-source structure 41 to fit tightly and to be fixed on the backboard 42.Thus, but holding circuit plate 411 is smooth, makes circuit board 411 not slide on backboard 42, and allows circuit board 411 and 42 of backboards not produce gap 46.
Above-mentioned according to the described fixed sturcture of preferred embodiment of the present invention and use its backlight module, utilize and a plurality of grabs are set on backboard, and form the mode of a plurality of perforates on circuit board, can reach the effect of fixing circuit board on backboard.A plurality of screws of having avoided locking cause the assembling increase in man-hour, and have avoided leaking lock screw or screw application of force inequality, cause the irregular problem of printed circuit board (PCB).Its advantage is:
1. owing to only a plurality of grabs need be set easily on backboard, and on circuit board, form corresponding a plurality of perforates, firm and smooth being fixed on the backboard of circuit board can be able to be avoided because the problem that the exploitation complicated die causes cost to increase.
2. only need these a little grabs are passed this a little perforates, and circuit board is passed a distance so that be sticked in this a little grabs on backboard, can carry out the fixing of circuit board simply and rapidly.
3. because each grab correspondence is passed each perforate, make that circuit board is fixed on the backboard after, the phenomenon that can slide not.
4. by a plurality of grab clamping circuit boards, can make the complete backboard that fits in of circuit board, the planarization of holding circuit plate, and then promote product quality and yield rate.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the present invention.
Claims (15)
1, a kind of fixed sturcture, in order to fix a circuit board, this circuit board has several perforates, a upper surface and a lower surface, and those perforates are positioned at the light emitting source zone of circuit board, it is characterized in that, and this fixed sturcture comprises:
One backboard has a binding face; And
Several grabs are arranged on this binding face, and those grabs are bending structure, and this bending structure has two medial surfaces, and wherein a medial surface and this binding face intersect, and another medial surface is a clamping face;
Wherein, those grabs pass those perforates so that this binding face fits in this lower surface, and those grabs are moved towards the hole wall of those perforates, and this clamping face is sticked in this upper surface, are fixed on this backboard so as to making this circuit board.
2, fixed sturcture according to claim 1 is characterized in that, this clamping face is slightly less than the thickness of this circuit board to the height of this backboard.
3, fixed sturcture according to claim 1 is characterized in that, respectively this grab also has a curved surface, is formed at the leading edge of this clamping face.
4, fixed sturcture according to claim 1 is characterized in that, respectively this grab has a clamping salient point, is formed on this clamping face.
5, fixed sturcture according to claim 4 is characterized in that, this clamping salient point is slightly less than the thickness of this circuit board to the height of this backboard.
6, fixed sturcture according to claim 1 is characterized in that, respectively the hole wall of this perforate is a curved surface.
7, fixed sturcture according to claim 1 is characterized in that, the width of those perforates equals the width of those grabs at least.
8, a kind of backlight module is characterized in that, comprising:
One light-source structure comprises a circuit board, has several perforates, a upper surface and a lower surface, and those perforates are positioned at the light emitting source zone of circuit board; One luminescence component is arranged on this circuit board, in order to a backlight to be provided; And
One fixed sturcture, in order to fix this circuit board, this fixed sturcture comprises a backboard, has a binding face; And several grabs, being arranged on this binding face, those grabs are bending structure, and this bending structure has two medial surfaces, and wherein a medial surface and this binding face intersect, and another medial surface is a clamping face;
Wherein, those grabs pass those perforates so that this binding face fits in this lower surface, and those grabs are moved towards the hole wall of those perforates, and this clamping face is sticked in this upper surface, are fixed on this backboard so as to making this circuit board.
9, backlight module according to claim 8 is characterized in that, this clamping face is slightly less than the thickness of this circuit board to the height of this backboard.
10, backlight module according to claim 8 is characterized in that, respectively this grab also has a curved surface, is formed at the leading edge of this clamping face.
11, backlight module according to claim 8 is characterized in that, respectively this grab has a clamping salient point, is formed on this clamping face.
12, backlight module according to claim 11 is characterized in that, this clamping salient point is slightly less than the thickness of this circuit board to the height of this backboard.
13, backlight module according to claim 8 is characterized in that, respectively the hole wall of this perforate is a curved surface.
14, backlight module according to claim 8 is characterized in that, the width of those perforates equals the width of those grabs at least.
15, backlight module according to claim 8 is characterized in that, this luminescence component is a light emitting diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101705128A CN100435000C (en) | 2006-12-21 | 2006-12-21 | Fixation structure and backlight module using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101705128A CN100435000C (en) | 2006-12-21 | 2006-12-21 | Fixation structure and backlight module using the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1971368A CN1971368A (en) | 2007-05-30 |
| CN100435000C true CN100435000C (en) | 2008-11-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101705128A Active CN100435000C (en) | 2006-12-21 | 2006-12-21 | Fixation structure and backlight module using the same |
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| CN (1) | CN100435000C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101435936B (en) * | 2007-11-12 | 2013-06-12 | 群创光电股份有限公司 | Backlight module and display apparatus |
| KR101445734B1 (en) | 2007-12-07 | 2014-10-01 | 삼성전자 주식회사 | Liquid Crystal Display |
| CN101848619B (en) * | 2010-05-24 | 2012-01-04 | 友达光电(厦门)有限公司 | Fixed assembly and electronic device thereof |
| US8520162B2 (en) * | 2011-03-14 | 2013-08-27 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Back light module and liquid crystal display thereof |
| EP2654122B1 (en) | 2011-09-02 | 2018-04-04 | Huawei Technologies Co., Ltd. | Active antenna system |
| CN103955094B (en) * | 2014-05-15 | 2017-05-24 | 瑞仪光电股份有限公司 | Frame mechanism for optical equipment |
| CN112649993A (en) * | 2020-12-31 | 2021-04-13 | 惠科股份有限公司 | Fixing structure of backlight lamp panel and backlight lamp panel |
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| CN2485563Y (en) * | 2001-05-10 | 2002-04-10 | 宁波方太厨具有限公司 | Lampshade for cooker hood |
| CN1605912A (en) * | 2004-11-09 | 2005-04-13 | 友达光电股份有限公司 | Directly-down backlight module |
| CN1664674A (en) * | 2005-04-14 | 2005-09-07 | 友达光电股份有限公司 | Backlight module of planar display device |
| JP2006302913A (en) * | 2006-07-28 | 2006-11-02 | Sharp Corp | Backlight device and liquid crystal display device |
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2006
- 2006-12-21 CN CNB2006101705128A patent/CN100435000C/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2485563Y (en) * | 2001-05-10 | 2002-04-10 | 宁波方太厨具有限公司 | Lampshade for cooker hood |
| CN1605912A (en) * | 2004-11-09 | 2005-04-13 | 友达光电股份有限公司 | Directly-down backlight module |
| CN1664674A (en) * | 2005-04-14 | 2005-09-07 | 友达光电股份有限公司 | Backlight module of planar display device |
| JP2006302913A (en) * | 2006-07-28 | 2006-11-02 | Sharp Corp | Backlight device and liquid crystal display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1971368A (en) | 2007-05-30 |
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