CN101251992B

CN101251992B - Driver circuit device and backlight module

Info

Publication number: CN101251992B
Application number: CN2008100904049A
Authority: CN
Inventors: 袁世骏; 陈政传
Original assignee: AU Optronics Corp
Current assignee: AU Optronics Corp
Priority date: 2008-03-31
Filing date: 2008-03-31
Publication date: 2010-07-21
Anticipated expiration: 2028-03-31
Also published as: CN101251992A

Abstract

The invention discloses a driving circuit device and a backlight module. A luminescent component is driven by the driving circuit device, wherein, the light emitting component is provided with at least one electrode lead. The driving circuit device comprises a circuit substrate and a transformer, wherein, the transformer is arranged on the circuit substrate and a clamping part is arranged at one side of the transformer. The clamping part and the transformer are connected electrically, and the electrode lead is clamped by the clamping part.

Description

Driving circuit device and backlight module

Technical field

The present invention relates to a kind of driving circuit device and backlight module.

Background technology

Generally speaking, liquid crystal indicator mainly is to comprise a liquid crystal display and a backlight module, and wherein backlight module roughly can be divided into two types of Staight downward type backlight module and side light type backlight modules again.

In backlight module, (cold cathode fluorescent lamp, CCFL) as luminescence unit, it provides a high-voltage driven signal to be driven by at least one driving circuit device generally to be to use cathode fluorescent tube.

Please refer to shown in Figure 1, be generally luminescence unit 11 (cathode fluorescent tube) and driving circuit device 13 can be connected and assemble smoothly, the dealer can be earlier with luminescence unit 11 earlier with the fixing luminescence unit 11 of rubber blanket (rubber) 15, and be electrically connected one high pressure resistantly and have the connecting line 12 of a splicing ear 121 respectively in the electrode tip 111,112 of luminescence unit 11, be linked to a splicing ear 131 of driving circuit device 13 again via the splicing ear 121 of connecting line 12.At this moment, the high-voltage driven signal exported by a transformer 14 of driving circuit device 13 can be sent to luminescence unit 11 and driven for emitting lights unit 11 in addition via splicing ear 131, splicing ear 121 and connecting line 12.

With regard to above-mentioned backlight module, because the high-voltage driven signal that provided of driving circuit device 13 is generally the above high pressure of KV grade, therefore when splicing ear 121 loose contacts of splicing ear on the driving circuit device 13 131 and connecting line 12, may cause arcing phenomenon (arcing).In addition, because being connected of splicing ear 121 and splicing ear 131 must be with artificial assembling, therefore work as the fluorescent tube number and will spend more assembling man-hour more for a long time.Because mechanism's parts such as connecting line 12 and splicing ear 121, splicing ear 131 all must be can be high pressure resistant, therefore must spend higher cost again.

From the above, how to provide a kind of arcing phenomenon of can avoiding to produce, and can reduce mechanism's number of packages amount, to save material cost and to assemble the driving circuit device and the backlight module in man-hour, real one of the current important topic that belongs to.

Summary of the invention

Because the problems referred to above, purpose of the present invention is for providing a kind of driving circuit device and the backlight module that can avoid the arcing phenomenon to produce.Another object of the present invention is for providing a kind of mechanism's number of packages amount that can reduce to save cost and to assemble the driving circuit device and the backlight module in man-hour.

For reaching above-mentioned purpose, drive a luminescence component with an electrode cable according to a kind of driving circuit device of the present invention.Driving circuit device comprises a circuit substrate and a transformer, and wherein, transformer is arranged on the circuit substrate, and has a clamping part in a side of transformer.Clamping part and transformer electrically connect, electrode cable then is subjected to the clamping part clamping.

For reaching above-mentioned purpose, comprise a backboard, one drive circuit device and a luminescence component according to a kind of backlight module of the present invention.Driving circuit device is arranged at a side of backboard, and has a circuit substrate and a transformer.Wherein, transformer is arranged on the circuit substrate, and in a side of transformer have one with the clamping part of this depressor electrically connect.Luminescence component is arranged at the opposite side of backboard, and has an electrode cable that is subjected to the clamping part clamping.

From the above, driving circuit device of the present invention and backlight module are that clamping part is set in transformer, with electrode cable and the clamping part winding with luminescence component, and it are electrically connected to each other.So promptly saved mechanism's parts such as high-pressure connection line of the prior art, high pressure splicing ear, and escapable cost, and after mechanism's number of packages amount minimizing, can save simultaneously and assemble man-hour.In addition, electrode cable directly and the clamping part winding of transformer also can avoid producing the arcing phenomenon that causes because of the loose contact between splicing ear.

Description of drawings

Fig. 1 is for showing the part synoptic diagram of existing backlight module;

Fig. 2 is for showing the part synoptic diagram according to a kind of backlight module of preferred embodiment of the present invention;

Fig. 3 is the diagrammatic cross-section of AA line in the displayed map 2; And

Fig. 4 is for showing the synoptic diagram according to transformer in the backlight module of preferred embodiment of the present invention.

Wherein, Reference numeral is:

11: luminescence unit

111,112: electrode tip

12: connecting line

121: splicing ear

13: driving circuit device

131: splicing ear

14: transformer

15: rubber blanket

2: backlight module

21: backboard

Perforate in 211: the first

22: driving circuit device

221: circuit substrate

Perforate in 2211: the second

222: transformer

2221: clamping part

2222: bobbin winder bracket

2223: primary side coil

2224: secondary side coil

23: luminescence component

231: electrode cable

232: kink

24: fixture

Embodiment

Hereinafter with reference to correlative type, driving circuit device and backlight module according to preferred embodiment of the present invention are described.

Please refer to Fig. 2 and shown in Figure 3, wherein, Fig. 3 is a sectional view of AA line among Fig. 2.The backlight module 2 of preferred embodiment of the present invention comprises a backboard 21, one drive circuit device 22 and a luminescence component 23.In the present embodiment, backlight module 2 is the example explanation with the direct type backlight module, and it can be applicable in the liquid crystal indicator.

Driving circuit device 22 is arranged at one first side of backboard 21, and has a circuit substrate 221 and a transformer 222.Wherein, circuit substrate 221 can be a printed circuit board (PCB) (print circuit board, PCB), it can be lamina, doubling plate or multilayer board.In addition, transformer 222 can be the some of a transverter (inverter), and transformer 222 outputs one drive signal is luminous with driven for emitting lights assembly 23.

Transformer 222 is arranged at the surface of circuit substrate 221 away from backboard 21.Again as shown in Figure 4, transformer 222 has a clamping part 2221, a bobbin winder bracket 2222, at least one primary side coil (primaryside coil) 2223 and at least one secondary side coil (secondary side coil) 2224.Clamping part 2221 is positioned at a side of transformer 222, and is arranged in the bobbin winder bracket 2222.Primary side coil 2223 and secondary side coil 2224 are set around bobbin winder bracket 2222 respectively, wherein, clamping part 2221 be adjacent to secondary side coil 2224 and with its electric connection.In addition, clamping part 2221 also can be adjacent to primary side coil 2223, is not limited it in this position is set.

Referring again to Fig. 2 and shown in Figure 3, luminescence component 23 for example is a kind of cathode fluorescent tube or a kind of thermal cathode fluorescent tube in the present embodiment, and it is arranged at one second side of backboard 21, and is set in parallel approximately with backboard 21.Luminescence component 23 has two electrode cables 231 in the present embodiment to receive drive signal, and each electrode cable 231 has a kink 232, use the direction that changes electrode cable 231, make electrode cable 231 from the aspect parallel with luminescence component 23, behind kink 232, form and be vertical aspect approximately with luminescence component 23, extend first perforate 211 of passing backboard 21 respectively again, be inserted into again in the clamping part 2221 that is arranged on transformer 222 on the circuit substrate 221, and be subjected to gripping of clamping part 2221, and form with clamping part 2221 simultaneously and electrically connect, thus, luminescence component 23 has just reached the requirement that electrically conducts with transformer 222.

In the present embodiment, backboard 21 can be a metal backing, and has a reflecting surface in its second side, reflects with effective utilization with the light that luminescence component 23 is sent.It is own that reflecting surface can be backboard 21, or add a reflector plate, do not limited in this.

In addition, in the present embodiment, circuit substrate 221 has at least one second perforate 2211, and clamping part 2221 is and the corresponding setting of the position of opening of second perforate 2211, and is exposed to second perforate 2211.In addition, clamping part 2221 has at least one metal clips, gripping the electrode cable 231 that passes first perforate 211 and second perforate 2211, and electrode cable 231 and via the gripping of metal clips, electrically connects and produce with secondary side coil 2224.What deserves to be mentioned is, in this, metal clips is that the metal clips with the U type is an example, certainly it also can be two common holding electrode leads 231 of shell fragment, also or can be single metal clips and come common holding electrode lead 231 with the part of bobbin winder bracket 2222, this neither restriction, but mainly be to electrically connect to paying the utmost attention to clamping part 2221 holding electrode leads 231 and with secondary side coil 2224.

Moreover in the present embodiment, backlight module 2 also comprises a fixture 24, it for example is a rubber blanket (rubber), link with an end of backboard 21 and luminescence component 23 respectively, supporting luminescence component 23, and the fixing position of luminescence component 23 in backlight module 2.

In the foregoing description, driving circuit device is to be the example explanation with the luminescence component that drives in the backlight module, and it also can be in order to driving other load certainly, but not only limit to be applied in the backlight module.

In sum, driving circuit device of the present invention and backlight module are that clamping part is set in transformer, with electrode cable and clamping part winding, and it is electrically connected to each other, to avoid producing the arcing phenomenon that causes because of the loose contact between splicing ear with luminescence component.In addition, so also can save mechanism's parts such as high-pressure connection line of the prior art, high pressure splicing ear, and can save material cost, and after mechanism's number of packages amount minimizing, can save simultaneously and assemble man-hour.

Though the present invention discloses as above with preferred embodiment; right its is not in order to limit the present invention; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as 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

1. a driving circuit device is used to drive the luminescence component with an electrode cable, it is characterized in that this driving circuit device comprises:

One circuit substrate; And

One transformer is arranged on this circuit substrate, and has a clamping part in a side of this transformer, wherein this clamping part and this transformer electrically connect, and this clamping part has at least one metal clips;

This circuit substrate has a corresponding perforate with this clamping part, this electrode cable has a kink, this kink makes this electrode cable from the aspect parallel with this luminescence component, behind this kink, form and be vertical aspect with this luminescence component, passing this perforate extends in this clamping part, fixed by this clamping part, and electrically connect with this transformer.

2. driving circuit device as claimed in claim 1 is characterized in that this transformer also has a bobbin winder bracket, and this clamping part is arranged in this bobbin winder bracket.

3. driving circuit device as claimed in claim 2 is characterized in that, this transformer also has a primary side coil and a level lateral coil, be set around respectively on this bobbin winder bracket, and this clamping part and the electric connection of this secondary side coil.

4. driving circuit device as claimed in claim 3 is characterized in that, this clamping part is adjacent to this secondary side coil or this primary side coil.

5. a backlight module is characterized in that, comprises:

One backboard;

The one drive circuit device, be arranged at a side of this backboard, and have a circuit substrate and a transformer, wherein this transformer is arranged on this circuit substrate, and in a side of this transformer have one with the clamping part of this transformer electrically connect, this clamping part has at least one metal clips; And

One luminescence component is arranged at the opposite side of this backboard, and has an electrode cable;

This backboard has one first perforate, and this circuit substrate has one second perforate, and the position of this second perforate is corresponding with this first perforate, and the position of this second perforate is corresponding with this clamping part;

This electrode cable has a kink, this kink makes this electrode cable from the aspect parallel with this luminescence component, behind this kink, form and be vertical aspect with this luminescence component, pass this first perforate and this second perforate respectively, extend in this clamping part, fixed by this clamping part, and electrically connect with this transformer.

6. backlight module as claimed in claim 5 is characterized in that, this transformer is arranged at the surface of this circuit substrate away from this backboard.

7. backlight module as claimed in claim 5 is characterized in that this transformer also has a bobbin winder bracket, and this clamping part is arranged in this bobbin winder bracket.

8. backlight module as claimed in claim 7 is characterized in that, this transformer also has a primary side coil and a level lateral coil, be set around respectively on this bobbin winder bracket, and this clamping part and the electric connection of this secondary side coil.

9. backlight module as claimed in claim 8 is characterized in that, this clamping part is adjacent to this secondary side coil or this primary side coil.

10. backlight module as claimed in claim 5 is characterized in that, this luminescence component is a cathode fluorescent tube or a thermal cathode fluorescent tube.