CN1549029A - Backlight module and liquid crystal display device - Google Patents
Backlight module and liquid crystal display device Download PDFInfo
- Publication number
- CN1549029A CN1549029A CNA031365701A CN03136570A CN1549029A CN 1549029 A CN1549029 A CN 1549029A CN A031365701 A CNA031365701 A CN A031365701A CN 03136570 A CN03136570 A CN 03136570A CN 1549029 A CN1549029 A CN 1549029A
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- fluorescent tube
- supporting member
- backlight module
- diffuser plate
- framework
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Abstract
The back light module consists of one frame, one reflecting sheet, at least one lamp tube, one diffusion board, several optical diaphragms and at least one support member. The reflecting sheet is configured in the bottom of the frame, the lamp tube is configured inside the frame and over the reflecting sheet, the diffusion board is configured on the frame and located over the lamp tube, the optical diaphragms are configured on the diffusion board, and the support member on the reflecting sheet includes two support parts to support the diffusion board and the lamp tube separately.
Description
Technical field
The invention relates to a kind of backlight module (Back Light Module) and LCD (Liquid Crystal Display, LCD), and particularly can support diffuser plate and fluorescent tube simultaneously, with backlight module and the LCD of avoiding both to be out of shape relevant for a kind of.
Background technology
In order to cooperate modern way of life, it is frivolous that the volume of video signal or device for image day by day is tending towards.Traditional cathode-ray tube (CRT) though still have its advantage, because the structure in internal electron chamber, makes that display is bulky and takes up space, and still has radiant rays to hinder problems such as eye when showing.Therefore, the plane formula display (Flat Panel Display) that cooperates photoelectric technology and semiconductor fabrication to be developed, for example LCD (LCD), organic light emitting display (OLED) or plasma display panel (Plasma Display Panel, PDP), become the main flow of display product gradually.
From the above, with regard to LCD, utilize kenel can slightly be divided into three kinds of reflective liquid-crystal display (reflective LCD), penetrating LCD (transmissive LCD) and semi-penetrated semi-reflected liquid crystal displays according to its fluorescent tube.With the penetration or the LCD of semi-penetration, semi-reflective is example, it is made of a liquid crystal panel and a backlight module, wherein, liquid crystal panel is made of two transparency carriers and a liquid crystal layer that is configured between this two transparency carrier, and backlight module is in order to provide this liquid crystal panel required face fluorescent tube, so that LCD reaches the effect of demonstration.
Fig. 1 is represented is the diagrammatic cross-section of a kind of direct type backlight module of knowing.Please refer to Fig. 1, backlight module 100 is made of with at least one support column 112 framework 102, reflector plate 104, at least one fluorescent tube 106, diffuser plate 108, a blooming piece 110, wherein reflector plate 104 is to be configured on the inner bottom surface of framework 102, fluorescent tube 106 is in the Configuration Framework 102, diffuser plate 108 is to be configured on the framework 102, blooming piece 110 is to be configured on the diffuser plate 108, and.Support column 112 is to be configured on the framework 102 of 106 of diffuser plate 108 and fluorescent tubes.As shown in Figure 1, by the support of 112 pairs of diffuser plates 108 of support column, be to avoid diffuser plate 108 buckling deformations and the optical characteristics variation that causes backlight module.
Fig. 2 is represented is the diagrammatic cross-section of the another kind of direct type backlight module known.Please refer to Fig. 2, backlight module 200 is made of with at least one pedestal 212 framework 202, reflector plate 204, at least one fluorescent tube 206, diffuser plate 208, a blooming piece 210, wherein reflector plate 204 is to be configured on the inner bottom surface of framework 202, fluorescent tube 206 is in the Configuration Framework 202, diffuser plate 208 is to be configured on the framework 202, blooming piece 210 is to be configured on the diffuser plate 208, and.Pedestal 212 is to be configured on the framework 202 of fluorescent tube 206 belows.As shown in Figure 2, by the support of 212 pairs of fluorescent tubes 206 of pedestal, be to avoid the distortion of fluorescent tube 206 and the optical characteristics variation that causes backlight module 200.
Yet, in above-mentioned backlight module 100,200, have following problem:
If use backlight module 100 as shown in Figure 1, though can support to diffuser plate 108, to avoid diffuser plate 108 buckling deformations, yet, this kind structure also can't support fluorescent tube 106, and when the display panels size was big more, it is big that the size of fluorescent tube 106 also can become thereupon, thereby make fluorescent tube 106 easily because of the buckling deformation of rigidity deficiency, and then influence the optical characteristics of backlight module 100.
On the other hand, if use backlight module 200 as shown in Figure 2, though can support to fluorescent tube 206, avoiding fluorescent tube 206 buckling deformations, yet this kind structure also can't support diffuser plate 208, when the display panels size is big more, the size of diffuser plate 208 also can become greatly thereupon, thereby makes diffuser plate 208 easily because of rigidity deficiency or expanded by heating buckling deformation, and same meeting influences the optical characteristics of backlight module 200.
Summary of the invention
Therefore, purpose of the present invention is providing a kind of backlight module and LCD exactly, can avoid the buckling deformation of diffuser plate and fluorescent tube simultaneously, to keep backlight module and LCD good optical characteristic.
The present invention proposes a kind of backlight module, and this backlight module is made of a framework, reflector plate, at least one fluorescent tube, diffuser plate, a plurality of blooming piece and at least one supporting member.Wherein reflector plate is to be configured in base of frame, fluorescent tube is to be configured in the framework, and fluorescent tube is positioned at the reflector plate top, diffuser plate is to be configured on the framework, and diffuser plate is to be positioned at the fluorescent tube top, and blooming piece is to be configured on the diffuser plate, and supporting member is to be configured on the reflector plate, wherein each supporting member comprises one first support portion and one second support portion, and first support portion and second support portion are to support diffuser plate and fluorescent tube individually.
The present invention proposes a kind of LCD, be made of a backlight module, a liquid crystal panel and one second framework, wherein backlight module mainly is by one first framework, reflector plate, at least one fluorescent tube, diffuser plate, a plurality of blooming piece and at least one supporting member.Wherein reflector plate is to be configured in first base of frame, fluorescent tube is to be configured in first framework, and fluorescent tube is positioned at the reflector plate top, diffuser plate is to be configured on first framework, and diffuser plate is to be positioned at the fluorescent tube top, and blooming piece is to be configured on the diffuser plate, and supporting member is to be configured on the reflector plate, wherein supporting member comprises one first support portion and one second support portion, and first support portion and second support portion are to support diffuser plate and fluorescent tube individually.And second framework be the edge that is configured on first framework and covers liquid crystal panel.
And in above-mentioned backlight module and LCD, wherein first support portion and diffuser plate are to have a fine pitch, and second support portion and fluorescent tube also have a fine pitch.
From the above, because the present invention is the appropriate location on the reflector plate in framework a plurality of supporting members are set, and each these a little supporting member is to support diffuser plate and fluorescent tube simultaneously, therefore the buckling deformation of diffuser plate and fluorescent tube can be avoided simultaneously, and then the backlight module or the optical characteristics of LCD can be kept.
And, because supporting member of the present invention in configuration the time is and fluorescent tube and diffuser plate are reserved a slight void, therefore can avoids the rising-heat contracting-cold of supporting member itself and cause the distortion of fluorescent tube and diffuser plate.
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 graphicly, be described in detail below.
Description of drawings
What Fig. 1 was represented is a kind of diagrammatic cross-section of the direct type backlight module of knowing.
Fig. 2 is represented is the diagrammatic cross-section of the direct type backlight module known of another kind.
What Fig. 3 was represented is the diagrammatic cross-section of the backlight module of preferred embodiment according to the present invention.
What Fig. 4 was represented is in the backlight module of preferred embodiment of the present invention, the diagrammatic cross-section that its profile direction is vertical with the profile direction of Fig. 3
What Fig. 5 was represented is the supporting member of the preferred embodiment according to the present invention and the fixed form synoptic diagram of reflector plate.
What Fig. 6 was represented is the synoptic diagram that supporting member is fixed in reflector plate of another preferred embodiment according to the present invention.
What Fig. 7 was represented is the synoptic diagram that supporting member is fixed in reflector plate of another preferred embodiment according to the present invention.
What Fig. 8 was represented is the synoptic diagram that supporting member is fixed in reflector plate of another preferred embodiment according to the present invention.
What Fig. 9 was represented is the structural representation of the supporting member of another preferred embodiment according to the present invention.
What Figure 10 was represented is the structural representation of the supporting member of another preferred embodiment according to the present invention.
Figure 11 is represented is diagrammatic cross-section according to the LCD of preferred embodiment of the present invention.
Graphic sign explanation:
100,200,300: backlight module
102,202,302,370: framework
104,204,304: reflector plate
106,206,306: fluorescent tube
108,208,308: diffuser plate
110,210,310: blooming piece
112: support column
212: pedestal
312,412,512: supporting member
312a, 412a, 512a: first support portion
312b, 412b, 512b: second support portion
312c, 312d, 312e, 412c, 512c: fixed part
314: tube support
316: groove
318: screw
350: LCD
360: liquid crystal panel
Embodiment
What Fig. 3 was represented is the diagrammatic cross-section of backlight module preferred embodiment of the present invention, and what Fig. 4 was represented is in backlight module preferred embodiment of the present invention, the diagrammatic cross-section that its section is vertical with the section of Fig. 3, and backlight module 300 is to be direct type backlight module.
At first, please be simultaneously with reference to Fig. 3 and Fig. 4, backlight module 300 of the present invention is made of a framework 302, reflector plate 304, at least one fluorescent tube 306, diffuser plate 308, a plurality of blooming piece 310 and at least one supporting member 312.
Diffuser plate 308 is to be configured on the framework 302, and diffuser plate 308 is the tops that are positioned at fluorescent tube 306.And blooming piece 310 is the tops that are provided in diffuser plate 308, and wherein these a little blooming pieces 310 for example are diffusion sheet, brightening piece, prismatic lens.
Supporting member 312 is to be configured on the reflector plate 304, wherein supporting member 312 is made of one first support portion 312a and one second support portion 312b, and the first support portion 312a is applicable to that supporting diffuser plate 308, the second support portion 312b then is applicable to support luminous tube 306.The material of supporting member 312 can be transparent material (as PMMA), so that supporting member 312 can not influence the luminous of fluorescent tube 306.
Please continue with reference to Fig. 3 and Fig. 4, in preferred embodiment of the present invention, supporting member 312 is the transparent cones that are formed in one, wherein the top of cone partly promptly is equivalent to first support portion 312a, and in cone, has a through hole, this through hole promptly is equivalent to the second support portion 312b, and can make fluorescent tube 306 be with the state configuration of passing through hole on framework 306.Therefore,, be to support fluorescent tube 306 and diffuser plate 308 simultaneously, and then avoid both buckling deformations simultaneously by the configuration of the appropriate location in framework 302 supporting member 312,
It should be noted that herein, the top of cone (the first support portion 312a) is to reserve certain minim gap with diffuser plate 308, and, the internal diameter of through hole (the second support portion 312b) is the external diameter that is slightly larger than fluorescent tube 306, through planting design thus, be to avoid supporting member 312, and cause fluorescent tube 306 or diffuser plate 308 distortion because of the rising-heat contracting-cold effect.
Please continue with reference to Fig. 5 so that the fixed form of supporting member 312 of the present invention and reflector plate 304 to be described.Supporting member 312 of the present invention also comprises a fixed part 312c except the first support portion 312a and the second support portion 312b, wherein fixed part 312c is the bottom that is configured in supporting member 312.As shown in Figure 5, on the position of the predetermined configurations supporting member 312 of reflector plate 304, it is the groove 316 that has the fixed part 312c of corresponding supporting member 312 individually, insert in the groove 316 by fixed part 312c supporting member 312, for example be that mode by hot melt adhesive is adhesively fixed again with supporting member 312, like this then can be with supporting member 312 firm being provided on the reflector plate 304.
Except the mode of above-mentioned use hot melt adhesive is fixing, the mode that the present invention can also utilize other is with supporting member 312 firm being configured on the reflector plate 304, for example be as Fig. 6 and shown in Figure 7, the fixed part 312d or the 312e of supporting member 312 are formed trip, mode by engaging is fixed on the reflector plate 304, also or as shown in Figure 8, by screw 318 is passed framework 302, with the fixed part 312c locking of supporting member 312 on framework 302.
In addition, supporting member 312 of the present invention is not limited to the taper shape that above-mentioned preferred embodiment discloses.Please refer to Fig. 9, supporting member shown in the figure 412 is the triangle tapers for flat, and this kind design can reduce the 306 beamy influences of 412 pairs of fluorescent tubes of supporting member.Please refer to Figure 10, supporting member shown in the figure 512 is that the U type is coniform, wherein the inner bottom surface of U type circular cone (the second support portion 512b) is in order to support luminous tube, and two tops of U type circular cone (the first support portion 512a) to be both sides by fluorescent tube 306 extend upwardly to the precalculated position to support diffuser plate 308.Because the replacing of fluorescent tube 306 need not passed through hole, therefore above-mentioned design can further increase the convenience of changing fluorescent tube 306.
Though (Fig. 3, Fig. 9, Figure 10) enumerated three kinds of supporting members with difformity and structure in above-mentioned preferred embodiment, yet the present invention is not limited thereto; Can support diffuser plate 308 and fluorescent tube simultaneously so long as in supporting construction, have first support portion and second support portion, promptly without departing from the spirit or scope of the invention.
Figure 11 is represented is diagrammatic cross-section according to the LCD of a preferred embodiment of the present invention.As shown in figure 11, LCD 350 of the present invention is made of above-mentioned backlight module 300, liquid crystal panel 360 and framework 370; Wherein liquid crystal panel 360 for example is general common by a plurality of groups of substrates of thin-film transistor (TFT Array), a colored optical filtering substrates and the active-matrix formula liquid crystal panel that liquid crystal layer constituted, this liquid crystal panel 360 is to be provided on the framework 302 of blooming piece 310 tops, framework 370 is edges of covering liquid crystal panel 330, and liquid crystal panel 360 is fixedly installed on the framework 302, it for example is to grip liquid crystal panel 360 jointly by framework 370 and framework 302, for example is to lock on framework 302 by screw again with framework 370.
From the above, present embodiment is to illustrate with disclosed backlight module 300 among Fig. 3, Fig. 4 and Fig. 5; Yet the present invention can also use via the mode of Fig. 6 to Fig. 8 backlight module with the assembling supporting member, can also use the backlight module that is equipped with disclosed supporting member among the 9th, 10 figure, and reaches the purpose that supports diffuser plate 308 and fluorescent tube 306 simultaneously.In addition, the backlight module in the present embodiment is applicable in active-matrix formula LCD (Active Matrix LCD) and passive matrix type LCD (Passive Matrix LCD).In other words, be configured in electrode layer on backlight module and the multiple substrate and do not limit to pattern with shared electrode collocation pixel electrode, being familiar with this skill person should know by inference, the electrode layer that is configured in the present embodiment on backlight module and the multiple substrate also can be a plurality of strip shaped electric poles, and is configured in the bearing of trend that its bearing of trend of strip shaped electric poles on the backlight module is perpendicular to the strip shaped electric poles of multiple substrate.
In sum, backlight module of the present invention and LCD have following advantage at least:
1. backlight module of the present invention or LCD, owing to be that appropriate location on reflector plate is provided with a plurality of supporting members, and each these a little supporting member is to support diffuser plate and fluorescent tube simultaneously, therefore the buckling deformation of diffuser plate and fluorescent tube can be avoided simultaneously, and then the backlight module or the optical characteristics of LCD can be kept.
2. backlight module of the present invention or LCD because supporting member in configuration the time is and fluorescent tube and diffuser plate are reserved a slight void, therefore can be avoided the rising-heat contracting-cold of supporting member itself and cause the distortion of fluorescent tube and diffuser plate.
Though the present invention discloses as above with a preferred embodiment; right its is not in order to limit the present invention; any people who is familiar with this technology; without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention is when looking being as the criterion that accompanying Claim defines.
Claims (18)
1. backlight module comprises:
A framework;
A reflector plate is configured in this base of frame;
At least one fluorescent tube is configured in this framework, and this fluorescent tube is positioned at this reflector plate top;
A diffuser plate is configured on this framework, and this diffuser plate is to be positioned at this fluorescent tube top;
A plurality of blooming pieces are configured on this diffuser plate; And
At least one supporting member is configured on this reflector plate, and wherein this supporting member comprises one first support portion and one second support portion, and this first support portion and this second support portion are to support this diffuser plate and this fluorescent tube individually.
2. backlight module as claimed in claim 1, wherein this supporting member comprises transparent material.
3. backlight module as claimed in claim 1, wherein this first support portion and this diffuser plate have one first spacing, and this second support portion and this fluorescent tube have one second spacing.
4. backlight module as claimed in claim 1, wherein this supporting member comprises a cone, and the tip by this cone to be supporting this diffuser plate, and this cone has a through hole, and this fluorescent tube is to pass this through hole and be configured on this framework, and by this through hole to support this fluorescent tube.
5. backlight module as claimed in claim 1, wherein this supporting member comprises a flat triangle cone, and the tip by this flat triangle cone is to support this diffuser plate, and this flat triangle cone has a through hole, and this fluorescent tube is to pass this through hole and be configured on this framework, and by this through hole to support this fluorescent tube.
6. backlight module as claimed in claim 1, wherein this supporting member comprises a U type cone, and two tops by this U type cone to be supporting this diffuser plate, and the inner bottom surface by this U type cone is to support this fluorescent tube.
7. backlight module as claimed in claim 1, wherein this supporting member is by on this reflector plate of the bonding configuration of the mode of hot melt adhesive.
8. backlight module as claimed in claim 1, wherein this supporting member is to be configured on this reflector plate by the mode that engages.
9. backlight module as claimed in claim 1, wherein this supporting member is to be configured on this reflector plate by the mode that screw locks.
10. LCD comprises:
A backlight module, this backlight module comprises:
One first framework;
A reflector plate is configured in this first base of frame;
At least one fluorescent tube is configured in this first framework, and this fluorescent tube is positioned at, and this is anti-
Penetrate the sheet top;
A diffuser plate be configured on this first framework, and this diffuser plate is to be positioned at this
The fluorescent tube top;
A plurality of blooming pieces are configured on this diffuser plate; And
At least one supporting member is configured on this reflector plate, wherein this supporting member
Comprise one first support portion and one second support portion, and this first support portion with
This second support portion is to support this diffuser plate and this fluorescent tube individually;
A liquid crystal panel; And
One second framework is configured on this first framework and covers the edge of this liquid crystal panel.
11. LCD as claimed in claim 10, wherein this supporting member comprises transparent material.
12. LCD as claimed in claim 10, wherein this first support portion and this diffuser plate are to have one first spacing, and this second support portion and this fluorescent tube are to have one second spacing.
13. LCD as claimed in claim 10, wherein this supporting member comprises a cone, and the tip by this cone is to support this diffuser plate, and this cone has a through hole, and this fluorescent tube is to pass this through hole and be configured on this framework, and by this through hole to support this fluorescent tube.
14. LCD as claimed in claim 10, wherein this supporting member comprises a flat triangle cone, and the tip by this flat triangle cone is to support this diffuser plate, and this flat triangle cone has a through hole, and this fluorescent tube is to pass this through hole and be configured on this framework, and by this through hole to support this fluorescent tube.
15. LCD as claimed in claim 10, wherein this supporting member comprises a U type cone, and two tops by this U type cone to be supporting this diffuser plate, and the inner bottom surface by this U type cone is to support this fluorescent tube.
16. LCD as claimed in claim 10, wherein this supporting member is by on this reflector plate of the bonding configuration of the mode of hot melt adhesive.
17. LCD as claimed in claim 10, wherein this supporting member is to be configured on this reflector plate by the mode that engages.
18. LCD as claimed in claim 10, wherein this supporting member is to be configured on this reflector plate by the mode that screw locks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031365701A CN100361007C (en) | 2003-05-21 | 2003-05-21 | Backlight module and liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031365701A CN100361007C (en) | 2003-05-21 | 2003-05-21 | Backlight module and liquid crystal display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1549029A true CN1549029A (en) | 2004-11-24 |
| CN100361007C CN100361007C (en) | 2008-01-09 |
Family
ID=34323377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031365701A Expired - Lifetime CN100361007C (en) | 2003-05-21 | 2003-05-21 | Backlight module and liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100361007C (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7264364B2 (en) | 2003-12-30 | 2007-09-04 | Au Optronics Corp. | Backlight assembly for liquid crystal display panel and support thereof |
| CN100359383C (en) * | 2005-06-21 | 2008-01-02 | 友达光电股份有限公司 | Backing Module of liquid crystal display and supporing stucture |
| CN100492119C (en) * | 2005-11-04 | 2009-05-27 | 鸿富锦精密工业（深圳）有限公司 | Direct type backlight module |
| US7637641B2 (en) | 2005-02-04 | 2009-12-29 | Samsung Electronics Co., Ltd. | Backlight assembly and liquid crystal display device having the same |
| CN105652518A (en) * | 2015-12-11 | 2016-06-08 | 友达光电股份有限公司 | Light source module |
| CN111812891A (en) * | 2020-08-19 | 2020-10-23 | 惠科股份有限公司 | Direct type backlight module and display device |
| CN111856817A (en) * | 2020-08-19 | 2020-10-30 | 惠科股份有限公司 | Direct type backlight module and display device |
| CN111856816A (en) * | 2020-08-19 | 2020-10-30 | 惠科股份有限公司 | Direct type backlight module and display device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000019990A (en) * | 1998-06-30 | 2000-01-21 | Toshiba Lighting & Technology Corp | Back light unit and liquid crystal display device |
| JP2001318614A (en) * | 2000-05-09 | 2001-11-16 | Mitsubishi Electric Corp | Surface light source device and liquid crystal display device using the same |
| KR100640987B1 (en) * | 2000-10-14 | 2006-11-02 | 엘지.필립스 엘시디 주식회사 | backlight assembly of liquid crystal display module |
| JP3927011B2 (en) * | 2001-08-20 | 2007-06-06 | 株式会社 日立ディスプレイズ | Liquid crystal display device and its driving circuit |
-
2003
- 2003-05-21 CN CNB031365701A patent/CN100361007C/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7264364B2 (en) | 2003-12-30 | 2007-09-04 | Au Optronics Corp. | Backlight assembly for liquid crystal display panel and support thereof |
| US7637641B2 (en) | 2005-02-04 | 2009-12-29 | Samsung Electronics Co., Ltd. | Backlight assembly and liquid crystal display device having the same |
| CN100359383C (en) * | 2005-06-21 | 2008-01-02 | 友达光电股份有限公司 | Backing Module of liquid crystal display and supporing stucture |
| CN100492119C (en) * | 2005-11-04 | 2009-05-27 | 鸿富锦精密工业（深圳）有限公司 | Direct type backlight module |
| CN105652518A (en) * | 2015-12-11 | 2016-06-08 | 友达光电股份有限公司 | Light source module |
| CN105652518B (en) * | 2015-12-11 | 2019-12-17 | 友达光电股份有限公司 | Light source module |
| CN111812891A (en) * | 2020-08-19 | 2020-10-23 | 惠科股份有限公司 | Direct type backlight module and display device |
| CN111856817A (en) * | 2020-08-19 | 2020-10-30 | 惠科股份有限公司 | Direct type backlight module and display device |
| CN111856816A (en) * | 2020-08-19 | 2020-10-30 | 惠科股份有限公司 | Direct type backlight module and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100361007C (en) | 2008-01-09 |
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