CN100374930C - Direct type back light unit assembly - Google Patents
Direct type back light unit assembly Download PDFInfo
- Publication number
- CN100374930C CN100374930C CNB2005100589322A CN200510058932A CN100374930C CN 100374930 C CN100374930 C CN 100374930C CN B2005100589322 A CNB2005100589322 A CN B2005100589322A CN 200510058932 A CN200510058932 A CN 200510058932A CN 100374930 C CN100374930 C CN 100374930C
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- base plate
- opening
- plate opening
- periphery
- mode set
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- 230000005142 aphototropism Effects 0.000 claims description 29
- 239000002245 particle Substances 0.000 claims description 2
- 210000002445 nipple Anatomy 0.000 description 27
- 239000004973 liquid crystal related substance Substances 0.000 description 24
- 230000000694 effects Effects 0.000 description 13
- 230000003287 optical effect Effects 0.000 description 9
- 239000010409 thin film Substances 0.000 description 9
- 238000009792 diffusion process Methods 0.000 description 6
- 230000009977 dual effect Effects 0.000 description 5
- 238000004080 punching Methods 0.000 description 5
- 238000005282 brightening Methods 0.000 description 4
- 230000017525 heat dissipation Effects 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 101100400452 Caenorhabditis elegans map-2 gene Proteins 0.000 description 2
- 241001149930 Protura <class> Species 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
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Abstract
The present invention discloses a direct type backlight module which at least comprises a bottom plate and a lamp tube, wherein the bottom plate is provided with at least one bottom plate opening, and the bottom plate opening is provided with a first periphery and a second periphery; the bottom plate comprises a bottom plate main body, at least one sloping side plate and a protrusion part, wherein the sloping side plate extends upwards from one side of the bottom plate main body; the protrusion part is arranged at the outer side of the bottom plate which corresponds to the position of the bottom plate opening, and a part of periphery of the protrusion part is formed on the first periphery of the bottom plate opening; the lamp tube is arranged on the bottom plate main body.
Description
Technical field
The present invention relates to a kind of down straight aphototropism mode set (bottom lighting module) that is applied to a display panel (display panel), particularly about a kind of down straight aphototropism mode set with high radiating effect.
Background technology
Liquid crystal display (LCD, Liquid Crystal Display) technology one is in being applied to portable electronic products such as mobile computer, mobile phone, digital camera, Video Camera, PDA.Except these more small-sized portable products this, recent large-sized liquid crystal panel manufacturing technology is also day by day ripe.For example, the desktop LCD replaces the CRT screen just gradually.LCD TV is held the light and handy advantage of its volume under the arm, also just competes with traditional tv on market at present.Liquid crystal panel (LCD panel) belongs to a kind of display panel (display panel) of non-self-luminosity, and itself is not luminous, need can show by being provided with just of a backlight.Had many kinds of backlight technology now, and in large scale (about's more than 20 o'clock) lcd products, often used down straight aphototropism mode set (bottom lighting module), with backlight as liquid crystal panel.
Please refer to Fig. 1, Fig. 1 is a known backlit module side diagrammatic cross-section.In liquid crystal display product, module 10 backlight be arranged at a liquid crystal panel 12 under, and include a plurality of fluorescent tubes 14, a diffuser plate (diffuser plate) 16 and one base plate (back bezel) 20.As shown in Figure 1, be used to provide a plurality of fluorescent tubes 14 arrangements parallel to each other of light source among the module 10 backlight and be arranged under the liquid crystal panel 12, " straight-down negative " module 10 backlight hence obtains one's name.Diffuser plate 16 is arranged between fluorescent tube 14 and the liquid crystal panel 12, can be with the in addition scattering of light from its below, to provide liquid crystal panel 12 more homodisperse light.On diffuser plate 16, can be equipped with plural layer optical thin film 18 usually, from bottom to top put, be used for increasing the light uniformity coefficient and the briliancy of liquid crystal display product integral body with the order of for example descending diffusion sheet, time brightening piece, last brightening piece, last diffusion sheet.
As mentioned above, down straight aphototropism mode set 10 is normally used in large-sized liquid crystal display product, and diffuser plate 16 shown in Figure 1 is formed a confined space usually with base plate 20.On the other hand, liquid crystal display product is also emphasized the slimming of its product, and therefore module 10 backlight also needs to meet slimming, so above-mentioned confined space is quite narrow usually.
One of the key element that influences the display quality of liquid crystal display product is its display brightness.And wherein the number of fluorescent tube 14 is many more, then can directly promote the display brightness of liquid crystal display product.Yet fluorescent tube 14 also be pyrotoxin simultaneously, but from the above, the space of module 10 ccontaining fluorescent tubes 14 backlight is not only narrow, and is generally confined space, so radiating effect is limited except producing light.Module 10 backlight often can't distribute smoothly at the heat that operation the time is produced, and constantly accumulation, in case the running time is long slightly, is easy to cause near the temperature the fluorescent tube 14 too high.The normal operation that this not only can influence liquid crystal panel 12 causes the reduction (for example: the picture of subregion is easy to generate the situation of rocking or glimmering) of display quality, the serviceable life of element around the easier significantly reduction.
Therefore, how to improve the heat-sinking capability of module 10 backlight, with at liquid crystal display product 1) size strengthens day by day; 2) under the dual trend that display brightness requires to promote day by day, make the module 10 backlight can ccontaining more fluorescent tube 14, and can improve the known problem in the not good display quality that brings of above-mentioned radiating effect and element serviceable life simultaneously, be a important topic that current techniques faced in fact.
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of down straight aphototropism mode set with high radiating effect.
Another object of the present invention is to provide a kind of down straight aphototropism mode set, it can improve the known backlit module because of the not good display quality problem that produces of radiating effect.
Another object of the present invention is to provide a kind of down straight aphototropism mode set, it improves the known backlit module because of the not good component life problem that produces of radiating effect.
For achieving the above object, the present invention proposes a kind of down straight aphototropism mode set, comprise a base plate and a fluorescent tube at least; Base plate offers at least one base plate opening, and the base plate opening has one first periphery and one second periphery; Base plate comprises a base plate main body, an at least one oblique side plate and a teat; Tiltedly extend on the side direction of side plate by the base plate main body; Teat is arranged at the plate outer side that corresponds to the base plate aperture position, and the part periphery of teat is formed at first periphery of this base plate opening.
Base plate is used for loading each element of module backlight.Wherein, fluorescent tube is arranged on the base plate main body.Diffuser plate is erected at the fluorescent tube top by oblique side plate, and by this, the plural layer optical thin film can be carried on the diffuser plate.
Base plate of the present invention offers at least one base plate opening, and has a teat and be arranged at the plate outer side that corresponds to the base plate aperture position.The part periphery of teat only is connected with first periphery of base plate opening, to keep the unimpeded of this base plate opening.Another part that teat is not connected with the base plate opening of base plate periphery place, teat and the base plate preset space length of being separated by.By the base plate opening, module backlight has had the passage of a heat radiation, produce and the heat of accumulating in the time of can helping to get rid of its operation.
Therefore, the down straight aphototropism mode set of high radiating effect provided by the present invention, thereby be able at liquid crystal display product 1) size strengthens day by day; 2) under the dual trend that display brightness requires to promote day by day, even make the ccontaining more fluorescent tube of module backlight, also can avoid the known problem in serviceable life of the not good display quality that brings of radiating effect and element in the known technology, the trend that not only meets industry development has more been given module product backlight or the higher industrial competitiveness of liquid crystal display product.
Description of drawings
Fig. 1 is a known backlit module side diagrammatic cross-section;
Fig. 2 shows down straight aphototropism mode set side diagrammatic cross-section of the present invention;
Fig. 3 displayed map 2 base plates and reflector plate three-dimensional exploded view;
Fig. 4 shows the present invention's module one embodiment three-dimensional exploded view backlight;
Fig. 5 shows the base plate of another embodiment of the present invention;
Fig. 6 shows the base plate of another embodiment of the present invention;
Fig. 7 A shows the triangle open mouth of base plate of the present invention;
Fig. 7 B shows the semicircle opening of base plate of the present invention; And
Fig. 7 C shows the polygon opening of base plate of the present invention.
The drawing reference numeral explanation:
Plural layer optical thin film 18,38 base plates 20,40
Base plate main body 201,401 oblique side plates 203,403
Embodiment
Please refer to Fig. 2, Fig. 2 shows down straight aphototropism mode set side diagrammatic cross-section of the present invention.Module 30 backlight is arranged under the display panel 52, and it comprises at least one fluorescent tube 34, a diffuser plate 36, plural layer optical thin film 38 and a base plate 40.
As shown in Figure 2, base plate 40 of the present invention offers at least one base plate opening 405, base plate opening 405 have one first periphery and with relative one second periphery of this first periphery.One teat 407 is arranged at base plate 40 outsides that correspond to base plate opening 405 positions.The part periphery of teat 407 is formed at first periphery of base plate opening 405, and second periphery is not connected with teat 407, to keep the unimpeded of this base plate opening 405.As shown in the figure, in the position of second periphery, teat 407 and base plate 40 preset space length 409 of being separated by.By base plate opening 405, module 30 backlight has had the passage of a heat radiation, produce and the heat of accumulating in the time of can helping to get rid of its operation.In a preferred embodiment of the present invention, first periphery is between 0.01mm to 2.5mm with the spacing of second periphery.
Embodiment with Fig. 2, base plate opening 405 is opened in the oblique side plate 403 of base plate 40, and can offer base plate opening 405 simultaneously by oblique side plate 403 relative two, the air that is of value among the module 30 backlight produces convection current with extraneous, and the eliminating usefulness of promoting heat.
Foreign matter or particulate that the teat 407 that is arranged at base plate opening 405 outsides can be used to avoid extraneous enter module 30 backlight, in the time of then can preventing to operate in the future module 30 backlight thus, above-mentioned foreign matter or particulate enter cause module 30 backlight that the situation of brightness irregularities is arranged; Also can be when module 30 backlight match with display panel 52, reduce these foreign matters or entering of particulate and cause the chance of the dim spot of display panel 52.
In the enforcement, base plate opening 405 can utilize stamping forming technology with the formation of teat 407, and by the inner face direction outward of base plate 40, a punching press can form base plate opening 405 and teat 407 simultaneously.For example when base plate opening 405 is a square type opening, can utilize a yi word pattern conehead stamping parts (not shown) to form base plate opening 405 and teat 407.
In another embodiment of the present invention, module 30 backlight comprises that more a reflector plate 39 is arranged between fluorescent tube 34 and the base plate 40, more accurate speech it, reflector plate 39 is arranged at the inner surface of base plate 40.The light that reflector plate 39 is used for making fluorescent tube 34 produce upwards reflects, to increase the utilization rate of light.
Please refer to Fig. 3, Fig. 3 displayed map 2 base plates and reflector plate three-dimensional exploded view.This figure shows that in an embodiment of the present invention by above-mentioned yi word pattern conehead stamping parts, to oblique side plate 403 punching presses of base plate 40, to form base plate opening 405, thus, base plate opening 405 is an approximate rectangular opening.Base plate 40 is subjected to the part of punching press then to form teat 407 in base plate opening 405 outsides, and teat 407 has three sides to be connected with base plate 40.In another side edge that is not connected, teat 407 and base plate 40 preset space length 409 of being separated by.And offer a plurality of reflector plate openings 395 on the reflector plate 39, corresponding with each base plate opening 405 of base plate 40, the A/F of reflector plate opening 395 is less than the A/F of the base plate opening 405 of base plate 40.
Fig. 4 shows the present invention's module one embodiment three-dimensional exploded view backlight.Module 30 top display panels 52 and preceding frame (front bezel) 42 backlight.Module 30 backlight from bottom to top comprises base plate 40, plural tubes 34, diffuser plate 36 and plural layer optical thin film 38.Before the function of these a little elements has been described in all, and reflector plate 39 has been arranged at the surface of base plate 40.
Wherein, a plurality of base plate openings 405 are opened in relative two oblique side plates 403 of base plate 40, so that module backlight 30 has better heat radiating effect, and the outside of base plate opening 405 has teat 407, avoids foreign matter to invade in the module 30 backlight.
Please refer to Fig. 5, Fig. 5 shows the base plate of another embodiment of the present invention.The situation that all has two relative oblique side plates 403 compared to the embodiment of Fig. 3 or Fig. 4, among Fig. 5 embodiment, four sides of the base plate main body 401 of base plate 40 have all extended upward oblique side plate 403, as shown in the figure, because tiltedly side plate 403 is connected to each other, can be considered only has an oblique side plate 403.And the oblique side plate 403 of the part of each side of base plate 40 all offers base plate opening 405, and each base plate opening 405 outside all is provided with above-mentioned teat 407.Thus, present embodiment can increase the number of the heat dissipation channel of module 30 backlight, makes the eliminating usefulness of its heat further promote.
Please refer to Fig. 6, Fig. 6 shows the base plate of another embodiment of the present invention.Present embodiment also based on the considering of the eliminating usefulness that promotes module 30 heats backlight, further is opened in base plate opening 405 the base plate main body 401 of base plate 40.Wherein, each base plate opening 405 outside also all is provided with above-mentioned teat 407.
Please refer to Fig. 7 A to Fig. 7 C, Fig. 7 A to Fig. 7 C shows the various embodiment of base plate of the present invention.The base plate opening of being offered on the base plate 40 405 except the opening of aforesaid similar rectangle, also can be other different shape.Polygon base plate opening 405 shown in semicircle base plate opening 405 shown in triangle bottom plate opening 405 shown in Fig. 7 A, Fig. 7 B or Fig. 7 C.Above-mentioned difform base plate opening 405 can utilize corresponding various stamping parts with the manufacturing of putting into practice, and as shown in the figure, still be provided with teat 407 in these difform base plate opening 405 outsides, as mentioned above, teat 407 forms for base plate 40 punching presses of part, and it only is connected with the part periphery of the base plate opening 405 of base plate 40, and another part periphery of base plate opening 405 (as shown in the figure, at least one side) locate, base plate 40 and teat 407 are at a distance of a preset space length.
Once mentioned in the explanation of known technology, at liquid crystal display product 1) size strengthens day by day; 2) under the dual trend that display brightness requires to promote day by day, down straight aphototropism mode set needs ccontaining more fluorescent tube.But then produced the not good problem of radiating effect this moment, and heat dissipation problem has brought display quality to descend simultaneously and the problem of element reduction in serviceable life.
And the present invention's module 30 backlight utilizes base plate opening 405 and reflector plate opening 395, makes the air in the module 30 backlight produce convection current with the external world, increases the heat dissipation of module 30 backlight.Therefore the present invention can improve the shortcoming of known technology effectively.And, when offering base plate opening 405, also consider the problem of foreign matter or particulate invasion, with stamping forming technology make base plate opening 405 be not directly be exposed to outside, and cover it with teat 407, and can cooperate the less reflector plate opening 395 of A/F, effectively stop foreign matter and particulate.
Comprehensive the above, the invention provides a kind of down straight aphototropism mode set of high radiating effect, thereby be able under the dual trend that the liquid crystal display product size strengthens day by day and the display brightness requirement promotes day by day, even make the ccontaining more fluorescent tube of module backlight, also can avoid the known problem in serviceable life of the not good display quality that brings of radiating effect and element in the known technology, the trend that not only meets industry development has more been given module product backlight or the higher industrial competitiveness of liquid crystal display product.
Though the present invention illustrates as above with preferred embodiments, so it is not in order to limit the present invention's spirit and invention entity, only to terminate in the foregoing description that.To being familiar with this operator, when understanding and utilize other element or mode to produce identical effect easily.Therefore, the modification of being done in not breaking away from spirit of the present invention and scope all should be included in the claim.
Claims (13)
1. down straight aphototropism mode set comprises:
One base plate, this base plate offer at least one base plate opening, and this base plate opening has one first periphery and one second periphery; This base plate comprises: a base plate main body; At least one oblique side plate extends on the side direction by this base plate main body; And a teat, being arranged at this plate outer side that corresponds to this base plate aperture position, the part periphery of this teat forms this first periphery of this base plate opening;
And at least one fluorescent tube, be arranged on this base plate main body.
2. down straight aphototropism mode set as claimed in claim 1 is characterized in that, this base plate opening is defined the size of this base plate opening by the spacing of this first periphery and this second periphery.
3. down straight aphototropism mode set as claimed in claim 2 is characterized in that, the spacing of this first periphery and this second periphery is between 0.01mm to 2.5mm.
4. down straight aphototropism mode set as claimed in claim 1 is characterized in that, comprises that more a reflector plate is arranged between this fluorescent tube and this base plate.
5. down straight aphototropism mode set as claimed in claim 4 is characterized in that, this reflector plate has at least one reflector plate opening, and is corresponding with this at least one base plate opening to small part to this at least one reflector plate opening of small part.
6. down straight aphototropism mode set as claimed in claim 5 is characterized in that, the A/F of this at least one reflector plate opening is less than this first periphery of this base plate opening and the spacing of this second periphery.
7. down straight aphototropism mode set as claimed in claim 5 is characterized in that, the opening shape of this reflector plate opening is a thin-and-long.
8. down straight aphototropism mode set as claimed in claim 7 is characterized in that, the opening length of this reflector plate opening is between 1.5-20mm, and width is between 0.01-2.5mm.
9. down straight aphototropism mode set as claimed in claim 1 is characterized in that, this base plate opening is opened in this oblique side plate.
10. down straight aphototropism mode set as claimed in claim 1 is characterized in that, this base plate opening is opened in this base plate main body.
11. down straight aphototropism mode set as claimed in claim 1 is characterized in that, this base plate opening is formed in an impact briquetting mode.
12. down straight aphototropism mode set as claimed in claim 5 is characterized in that, the A/F of this at least one reflector plate opening is less than the A/F of corresponding this at least one base plate opening.
13. down straight aphototropism mode set as claimed in claim 1 is characterized in that, this base plate opening can prevent that the particle greater than 0.1mm from entering the base plate inboard of down straight aphototropism mode set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100589322A CN100374930C (en) | 2005-03-25 | 2005-03-25 | Direct type back light unit assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100589322A CN100374930C (en) | 2005-03-25 | 2005-03-25 | Direct type back light unit assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1837915A CN1837915A (en) | 2006-09-27 |
| CN100374930C true CN100374930C (en) | 2008-03-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100589322A Expired - Fee Related CN100374930C (en) | 2005-03-25 | 2005-03-25 | Direct type back light unit assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100374930C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI432850B (en) * | 2011-12-30 | 2014-04-01 | Au Optronics Corp | Direct type backlight module and display panel using the same |
| US10520664B2 (en) | 2016-03-25 | 2019-12-31 | Boe Technology Group Co., Ltd. | Backlight module and display device |
| CN105757537B (en) * | 2016-03-25 | 2020-11-13 | 京东方科技集团股份有限公司 | Backlight module and display device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002189207A (en) * | 2000-12-19 | 2002-07-05 | Sharp Corp | Liquid crystal unit and liquid crystal display device |
| JP2003203503A (en) * | 2002-01-08 | 2003-07-18 | Tama Electric Co Ltd | Backlight device |
| CN2593224Y (en) * | 2002-10-18 | 2003-12-17 | 明基电通股份有限公司 | Downward back light apparatus and its frame |
| CN1501135A (en) * | 2002-11-12 | 2004-06-02 | 统宝光电股份有限公司 | Backlight module |
| CN1560673A (en) * | 2004-02-16 | 2005-01-05 | 友达光电股份有限公司 | Backlight module |
-
2005
- 2005-03-25 CN CNB2005100589322A patent/CN100374930C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002189207A (en) * | 2000-12-19 | 2002-07-05 | Sharp Corp | Liquid crystal unit and liquid crystal display device |
| JP2003203503A (en) * | 2002-01-08 | 2003-07-18 | Tama Electric Co Ltd | Backlight device |
| CN2593224Y (en) * | 2002-10-18 | 2003-12-17 | 明基电通股份有限公司 | Downward back light apparatus and its frame |
| CN1501135A (en) * | 2002-11-12 | 2004-06-02 | 统宝光电股份有限公司 | Backlight module |
| CN1560673A (en) * | 2004-02-16 | 2005-01-05 | 友达光电股份有限公司 | Backlight module |
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| Publication number | Publication date |
|---|---|
| CN1837915A (en) | 2006-09-27 |
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Granted publication date: 20080312 |