CN1441286A - Back lighting module and LCD - Google Patents
Back lighting module and LCD Download PDFInfo
- Publication number
- CN1441286A CN1441286A CN 02105199 CN02105199A CN1441286A CN 1441286 A CN1441286 A CN 1441286A CN 02105199 CN02105199 CN 02105199 CN 02105199 A CN02105199 A CN 02105199A CN 1441286 A CN1441286 A CN 1441286A
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- Prior art keywords
- circuit board
- backlight module
- fluorescent tube
- electrode
- present
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Abstract
The present invention discloses a back lighting module and LCD. The present invention includes several lamp tubes with electrodes at two ends over one reflecting board, and the voltage for the lamp tubes is provided by at least one circuit board on side of the reflecting board with the eletrodes being connected directly to the circuit board. The back lighting board of the present invention has small size, less material consumption, simple production process and low cost.
Description
Technical field
The present invention relates generally to a kind of backlight liquid crystal display module that is used for, and specifically, the present invention relates to a kind of design that is connected of fluorescent tube with circuit board of backlight module.
Background technology
Typical liquid crystal mainly includes liquid crystal panel, because of liquid crystal panel itself can't be luminous, so need a backlight module to provide liquid crystal panel enough incident lights.Wherein, being designed in response to consumer demand of backlight module is gradually to the little and low-cost direction effort of volume.
At present industry is used for the backlight liquid crystal display module multiple pattern, wherein direct type backlight module 1 as shown in Figure 1, it includes a plurality of U types (or straight formula) fluorescent tube 11 and places on the reflecting plate 13, in order to the liquid crystal panel light source to be provided.Each end of each fluorescent tube 11 connects a lead 113 via an electrode 111 respectively, and each lead 113 that is positioned at same fluorescent tube 11 two ends is connected to a joint 114 jointly, and further with on the circuit board 12 can provide a power output end 121 of fluorescent tube 11 luminous required voltages to be connected with joint 114.In addition, in order to protect each electrode 111, industry can be coated with the sleeve pipe 112 that the insulation material is made usually outside each electrode 111, and it can completely cut off each electrode 111 of tool high pressure circulation, and can allow each lead 113 protruding.
This existing backlight module 1 has oversize shortcoming, because of keeping flat, circuit board 12 is arranged in the backlight module, and each fluorescent tube 11 is connected with circuit board 12 with each lead 113 and joint 114, so LCD is being used for outside the viewing area of display message, also need reserve the space that can hold each circuit board 12, lead 113 and joint 114, its size can't be reduced at non-display area; In addition, in manufacture process, the electrode 111 of each fluorescent tube 11 needs to connect earlier lead 113, the lead 113 that will be positioned at same fluorescent tube 11 two ends again is connected to joint 114, can be connected to circuit board 12 with joint 114, the junction of these complicated connections all may come in contact condition of poor, and forms defect ware, and each this fluorescent tube 11 all is connected with power output end 121 by independent joint 114, and is unfavorable for material and controlling manufacturing cost.
Given this, the backlight module that the present invention endeavours to develop a novelty and has progressive reduces LCD size and the purpose that reduces cost in the hope of reaching.
Summary of the invention
The object of the present invention is to provide a kind of backlight liquid crystal display module that is used for, it includes a plurality of fluorescent tubes, the two ends of each fluorescent tube respectively include an electrode and are electrically connected at least one circuit board that each fluorescent tube required voltage can be provided with each electrode, make each electrode be adjacent to circuit board.The present invention can reduce the size of backlight module, and can reduce material and manufacturing course to reduce cost of manufacture.
Description of drawings
Fig. 1 is the part schematic perspective view of the backlight module of prior art;
Fig. 2 a is the part schematic perspective view of backlight module embodiment one of the present invention;
Fig. 2 b is the floor map of Fig. 2 a;
Fig. 3 a is the part schematic perspective view of backlight module embodiment two of the present invention;
Fig. 3 b is the floor map of Fig. 3 a.
Embodiment
Embodiment one
As the backlight module 2 of Fig. 2 a and 2b, it includes a plurality of U type fluorescent tubes 21, and by place a reflecting plate 23 under each fluorescent tube 21 with its source reflection of dispersing to liquid crystal panel; Wherein each fluorescent tube 21 includes two ends, and each end has an electrode 211 that power supply can be input into each fluorescent tube 21 respectively, and each electrode 211 further is electrically connected at and can provides one of each fluorescent tube 21 required voltage to be positioned at the circuit board 22 of reflecting plate 23 sides; Wherein circuit board can utilize single power source supply end 221 and the circuit that is positioned on the circuit board 22 that the voltage branch of power source supply end 221 outputs is delivered to each electrode 211; And the setting of circuit board 22 makes directly connecting circuit plate 22 of each electrode 211 perpendicular to reflecting plate 33.Preferably, the height of this circuit board is less than the integral thickness of backlight module.In the present embodiment, backlight module includes a backboard (not shown) in addition, and circuit board 22 can further include a plurality of can be with the fixation kit of circuit board 22 vertical fixing on backboard; In addition, can protect and a sleeve pipe 212 of isolated each electrode 211 also can be applicable to coat each electrode 211.
The present invention utilizes the circuit board 22 perpendicular to reflecting plate 23, directly electrically connect each electrode 211 of each fluorescent tube 21, but it can any existing mode realize this electric connection, as direct welding, or elder generation cuts this unnecessary lead again after a lead connects each electrode 211 and circuit board 22.The present invention does not need lead to be connected to joint, more is not required to be each joint power output end is provided, and it not only can significantly reduce connection complicated in the prior art and can reduce the chance that produces defective products because of bad connection, significantly reduces the step of making simultaneously yet.In addition, the present invention has exempted the setting of unnecessary lead, joint and power input, has more competitiveness in cost control.The much progress of the present invention on the LCD size is to be that backlight module only needs to keep the minimum space that perpendicular circuit board is set at a non-display area, and don't as for the thickness that increases backlight module, so LCD of the present invention has more the little advantage of volume.
Embodiment two
Backlight module 3 as Fig. 3 a and 3b, its backlight module 2 to first embodiment is similar, include a plurality of straight formula fluorescent tube 31 that is positioned on the reflecting plate 33, wherein each fluorescent tube 31 includes two ends, and each end is electrically connected at a first circuit board 32 and a second circuit board 34 that is positioned at reflecting plate 33 relative both sides with an electrode 311 respectively, wherein the setting of each circuit board 32 is perpendicular to reflecting plate 33, and each electrode 311 can directly be connected on the circuit board 32.In the present embodiment, first circuit board 32 includes the power source supply end 321 that each fluorescent tube 31 voltage can be provided, and electrically connects via lead (not shown) and second circuit board 34, delivers to each fluorescent tube 31 and voltage further can be divided.
The connected mode of circuit board and lamp tube electrode among the present invention, and the arrangement design of printed wire and power input is that those of ordinary skills utilize specific circuit knowledge to finish in the circuit board.In addition, for other assembly of realizing that other additional function adds,, also can optionally be arranged in the backlight module of the present invention as fixation kit or sleeve pipe.
The present invention is applicable to various direct type backlight module, and it is illustrated that wherein design of the quantity of fluorescent tube and pattern and circuit board line and configuration are not limited to above-mentioned example.Have a plurality of fluorescent tubes of direct electric connection at least one circuit board, and a plurality of electrodes of fluorescent tube are adjacent to be arranged on and the circuit board of liquid crystal display backlight module on, be invention which is intended to be protected.
The foregoing description only is explanation principle of the present invention and function thereof, and unrestricted the present invention.Therefore, those of ordinary skills' modification that the foregoing description is made and changing still without prejudice to spirit of the present invention.
Claims (9)
1. one kind is used for a backlight liquid crystal display module, includes
One reflecting plate;
A plurality of fluorescent tubes are located at the reflecting plate top, and each fluorescent tube includes two ends, and each end includes an electrode; And
At least one circuit board that the required voltage of each fluorescent tube is provided is located at the side of reflecting plate, and each electrode directly is electrically connected on this circuit board.
2. backlight module as claimed in claim 1 is characterized in that: it includes a circuit board, and each fluorescent tube is U type fluorescent tube, and two ends of each electrode are connected on this circuit board.
3. backlight module as claimed in claim 1 is characterized in that: it includes two circuit boards, is located at two relative sides of reflecting plate respectively, and wherein fluorescent tube is a straight light tube, and two ends of each fluorescent tube are connected on this two circuit board.
4. backlight module as claimed in claim 1 is characterized in that: other includes a plurality of sleeve pipes of being made by the insulation material, and described each sleeve pipe coats each electrode.
5. backlight module as claimed in claim 1 is characterized in that: each circuit board includes at least one power source supply end provided thereon.
6. backlight module as claimed in claim 1 is characterized in that: backlight module also includes a backboard, and circuit board also includes and a plurality of this circuit board is fixed in fixation kit on the base plate.
7. backlight module as claimed in claim 1 is characterized in that: the height of each circuit board is less than the thickness of backlight module.
8. backlight module as claimed in claim 1 is characterized in that: each electrode directly is welded on each circuit board.
9. LCD, it is characterized in that: it includes backlight module as claimed in claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021051992A CN100365487C (en) | 2002-02-26 | 2002-02-26 | Back lighting module and LCD |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021051992A CN100365487C (en) | 2002-02-26 | 2002-02-26 | Back lighting module and LCD |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1441286A true CN1441286A (en) | 2003-09-10 |
| CN100365487C CN100365487C (en) | 2008-01-30 |
Family
ID=27768441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021051992A Expired - Fee Related CN100365487C (en) | 2002-02-26 | 2002-02-26 | Back lighting module and LCD |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100365487C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100381913C (en) * | 2004-05-31 | 2008-04-16 | Lg.菲利浦Lcd株式会社 | Backlight assembly and LCD using the same |
| CN100426092C (en) * | 2006-03-01 | 2008-10-15 | 友达光电股份有限公司 | Back light module and light source structure thereof |
| CN100460957C (en) * | 2005-06-24 | 2009-02-11 | 奇菱科技股份有限公司 | Backlight module assembly and its light tube device |
| US7670025B2 (en) | 2007-07-03 | 2010-03-02 | Au Optronics Corp. | Backlight module |
| CN101169547B (en) * | 2006-10-26 | 2011-06-08 | 奇美电子股份有限公司 | Flat display device and its backlight module group |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3118699B2 (en) * | 1997-04-16 | 2000-12-18 | 日本航空電子工業株式会社 | Backlight socket for LCD |
| US6089739A (en) * | 1997-09-30 | 2000-07-18 | Sony Corporation | Surface light source device |
| JP3794456B2 (en) * | 1998-06-17 | 2006-07-05 | 株式会社日立製作所 | Liquid crystal display |
-
2002
- 2002-02-26 CN CNB021051992A patent/CN100365487C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100381913C (en) * | 2004-05-31 | 2008-04-16 | Lg.菲利浦Lcd株式会社 | Backlight assembly and LCD using the same |
| CN100460957C (en) * | 2005-06-24 | 2009-02-11 | 奇菱科技股份有限公司 | Backlight module assembly and its light tube device |
| CN100426092C (en) * | 2006-03-01 | 2008-10-15 | 友达光电股份有限公司 | Back light module and light source structure thereof |
| CN101169547B (en) * | 2006-10-26 | 2011-06-08 | 奇美电子股份有限公司 | Flat display device and its backlight module group |
| US7670025B2 (en) | 2007-07-03 | 2010-03-02 | Au Optronics Corp. | Backlight module |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100365487C (en) | 2008-01-30 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080130 Termination date: 20200226 |
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| CF01 | Termination of patent right due to non-payment of annual fee |