CN100478760C - Down backlight unit structure - Google Patents
Down backlight unit structure Download PDFInfo
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- CN100478760C CN100478760C CNB2005100626213A CN200510062621A CN100478760C CN 100478760 C CN100478760 C CN 100478760C CN B2005100626213 A CNB2005100626213 A CN B2005100626213A CN 200510062621 A CN200510062621 A CN 200510062621A CN 100478760 C CN100478760 C CN 100478760C
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- reflection horizon
- unit structure
- backlight unit
- plane
- light source
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Abstract
This invention discloses a straight-down back light unit structure, which is applied to the luminous chip to reduce the height and the straight intensity of the white light that is mixed by the red, the green and the blue light in the unit structure, in order to improve the proportional mixture of the lights. This straight-down back light includes a luminous chip, a first reflecting layer, a second reflecting layer or many second reflecting layers. The first reflecting layer is above the luminous chip to reflect the first part of the light sent out from the luminous chip, and the second reflecting layer or the several second reflecting layers form above the first reflecting layer to reflect the second part of the luminous source. The materials of the first and the second layers are all the transparent materials with good performances.
Description
Technical field
The present invention relates to a kind of down backlight unit structure, particularly relate to down backlight unit structure with one second reflection horizon.
Background technology
Recently the flat display apparatus industry is flourish, and correlation technique is constantly evolution like the mushrooms after rain also.In every spare part of flat display apparatus, backlight module is a crucial assembly.Wherein, in order to provide the well-balanced down backlight unit structure of flat display apparatus mixed light distribution most crucial especially, so-called down backlight unit structure is meant that light emitting source is positioned under the panel in the backlight module.At this, just general earlier downward back photo structure and function mode are summarized as follows.
See also the down backlight unit structure synoptic diagram of Fig. 1, according to an embodiment of the prior art, it comprises a luminescence chip 11, one first reflection horizon 12 and a substrate 13.This luminescence chip 11 is learnt the chips that assembly constituted such as can be light emitting diode by prior art, and this luminescence chip 11 is attached to the surface 131 of this substrate 13 in order to produce at least one light source and this luminescence chip 11.This first reflection horizon 12 learns to be the good transparent material of a light transmission from prior art, this material can be acryl, contain the transparent material of PC or glass etc. constitute.This first reflection horizon 12 is for being an inverted cone-shaped 121, and this inverted cone-shaped 121 above this luminescence chip 11 and and this luminescence chip 11 between have a distance to form a space, these inverted cone-shaped 121 formed these first reflection horizon 12, this luminescence chip 11 and 13 one-tenth homeotropic alignments of this substrate are to constitute a direct-type backlight unit structure.
Please continue to consult Fig. 2, this figure is a direct-type backlight unit structure function mode synoptic diagram, and as shown in Figure 1, this figure comprises a luminescence chip 11, reaches one first reflection horizon 12.Function mode is described as follows, and this luminescence chip 11 produces this first reflection horizon 12 of light source directive, and this ejaculation light source can be ruddiness, green glow and blue light three primary colors.The light source refrangible in this first reflection horizon 12 of directive becomes a first 21 of this light source and a second portion 22 of this light source.Wherein, most of light source is reflected by this first reflection horizon 12 or is reflected into the first 21 that wide-angle forms this light source, to reach the effect of abundant mixed light, small part light source then direct projection forward penetrates this first reflection horizon 12, in order to form a second portion 22 of this light source.Yet, the second portion 22 of this light source can't be reflected or refract to the abundant mixed light of wide-angle fully because of forward penetrates this first reflection horizon 12, the position produces irregular colour directly over causing this luminescence chip 11, and then can make the two-d display panel that is positioned at these 12 tops, first reflection horizon on this two-d display panel, produce bright spot because of mixed light is uneven, and make the down backlight unit structure module of the prior art can't reduce thickness, therefore need an improvement method to improve the shortcoming that at present existing down backlight unit structure function mode is caused.
Summary of the invention
Because foregoing existing down backlight unit structure is because of the abundant problem such as mixed light of small part light source, in order to reach the thickness of better mixed light effect and reduction structure of backlight unit, the invention provides a kind of down backlight unit structure and improve one's methods, to reduce the forward bright dipping of the second portion 22 of light source as shown in Figure 2 significantly, and the forward bright dipping of this second portion 22 can be reflected or refracts to wide-angle, with abundant raising ruddiness, green glow and the blue light emitting chip mixed light usefulness in down backlight unit structure, this improve one's methods be in down backlight unit structure, increase another reflection horizon be positioned at as shown in Figures 1 and 2 first reflection horizon 12 above, so improve the problems referred to above.
Further understand and understanding for your juror is had enforcement of the present invention and the mode of reaching, preferred embodiment hereinafter sincerely be provided and be aided with accompanying drawing, and with detailed explanatory note describe as after.
Description of drawings
Fig. 1 is a down backlight unit structure synoptic diagram in the prior art;
Fig. 2 is a down backlight unit structure function mode synoptic diagram in the prior art;
Fig. 3 is the down backlight unit structure synoptic diagram of one embodiment of the invention;
Fig. 4 is for second reflection horizon in the down backlight unit structure of one embodiment of the invention and reflect light source second portion synoptic diagram in this layer;
Fig. 5 is the second reflection horizon extension synoptic diagram in the down backlight unit structure of one embodiment of the invention;
Fig. 6 is that a plurality of first reflection horizon in the down backlight unit structure of one embodiment of the invention, polygonal cylinder second reflection horizon and large substrate concern synoptic diagram;
Fig. 7 is the down backlight unit structure synoptic diagram of another embodiment of the present invention; And
Fig. 8 is the down backlight unit structure synoptic diagram of another embodiment of the present invention.
Embodiment
See also Fig. 3 down backlight unit structure synoptic diagram, it is a kind of down backlight unit structure of one embodiment of the invention.This down backlight unit structure comprises a luminescence chip 11, one first reflection horizon 12, a substrate 13 and one second reflection horizon 31 as shown in Figure 1.This luminescence chip 11 is in order to produce at least one light source as described in Figure 1.This first reflection horizon 12 is an inverted cone-shaped 121 and can be erected on this substrate 13, and this first reflection horizon 12 is formed on the top of this luminescence chip 11, be used to reflect a first 21 of these luminescence chip 11 emitted light sources, this first reflection horizon 12 is to be made by transparent material in addition, and this transparent material can be the good acryl of foregoing light transmission, the transparent material that contains PC or glass etc.This second reflection horizon 31 is formed on this first reflection horizon 12 and is used to reflect a second portion 22 of these luminescence chip 11 emitted light sources.
Then see also Fig. 4, this figure is second reflection horizon of down backlight unit structure as shown in Figure 3 and reflects light source second portion synoptic diagram in this layer.This second reflection horizon 31 is made of transparent material, and this transparent material can be acryl, contain materials such as the transparent material of PC or glass.This second reflection horizon 31 comprises a plane 311 and from downward two flanks 312 that extend of the dual-side on this plane 311, this two flank 312 forms the space of an inverted V-shaped shape.In addition, the dual-side on this plane 311 more extends upward two flanks 313 in addition, and this two flank 313 forms a V-arrangement space.This inverted V-shaped shape space and 311 formation one of this plane are first angle 314 than mitre, and the scope of this first angle 314 can be between 35 to 45 degree; This V-arrangement space and this plane 311 form i.e. second angle 315 of a less angle, and these second angle, 315 scopes can be between five to ten degree.The scope design of above-mentioned this first angle 314 and this second angle 315 is through experiment confirm, can effectively reflect the light source that forward appears.So, these second reflection horizon, 31 reflectors are: the major part that penetrates light sources as Fig. 1 and this luminescence chip 11 shown in Figure 3 sees through as Fig. 2, shown in Figure 3 this first reflection horizon 12, through reflection or refract to wide-angle when forming the abundant mixed light of a first 21 of as shown in Figure 2 this light source, the small part light source then presents the forward bright dipping and penetrates the formed inverted V-shaped surface 316, inverted V-shaped shape space that this first reflection horizon 12 arrives this second reflection horizon 31, by this inverted V-shaped surface 316 light source is incident to a formed V-arrangement surface 317, this V-arrangement space again, last two flanks 312 that penetrate out this second reflection horizon again by these V-arrangement surface 317 reflections, 313 form a second portion 22 of this light source as shown in Figure 3, reach more perfect mixed light effect and reduce reflection or the forward bright dipping of refraction with this.
The described side schematic view that is characterized as this second reflection horizon 31 of above-mentioned Fig. 3, Fig. 4 is the synoptic diagram of a polygon column so please continue to consult second reflection horizon of the down backlight unit structure of Fig. 5.Among the figure, two flanks 312 that the dual-side on one plane 311 in this second reflection horizon 31 extends downwards and upwardly extending two flanks 313 in addition are the triangle column structure, the triangle column structure that wherein extends two flanks 312 downwards has three surfaces, is respectively one and forms inverted V-shaped surface 316 and one side edge surface 318 in inverted V-shaped space with plane 311 bonding surfaces.Simultaneously, the triangle column structure that extends upward two flanks 313 has three surfaces equally, is respectively one and forms V-arrangement surface 317 and one side edge surface 318 in V-arrangement space with plane 311 bonding surfaces.Among the figure, V-arrangement surface 317 arms of angle 3181 that engage with side edge surface 318 that form the V-arrangement space and surperficial 316 arms of angle 3182 that engage with side edge surface 318 of inverted V-shaped in formation inverted V-shaped space correspond to the both sides up and down on plane 311, constitute a polygonal cylinder second reflection horizon.
For being located at as Fig. 1 in second reflection horizon 31 that guarantees this polygonal cylinder, the top in Fig. 2 and this first reflection horizon 12 shown in Figure 3, this first reflection horizon 12 presents simultaneously for a plurality of, these a plurality of first reflection horizon 12 that present simultaneously include luminescence chip 11 as shown in Figure 1, make by a plurality of these first reflection horizon 12 that present simultaneously therewith the dimensions in second reflection horizon 31 of a polygonal cylinder agree with mutually, and those a plurality of first reflection horizon 12 are to be erected on the large substrate 61, thus, this polygonal cylinder second reflection horizon 31, a plurality of these first reflection horizon 12 and this large substrate 61 formed positional structure relations are just as these a plurality of first reflection horizon 12 in the down backlight unit structure shown in Figure 6, this polygonal cylinder second reflection horizon 31 and large substrate 61 concern synoptic diagram, thereby obtain a continuous down backlight unit structure.
Down backlight unit structure described above is one of embodiment of the invention, and having described this second reflection horizon 31 is an individual formed side of odd number and a polygonal cylinder situation that constitutes odd number; In other words, the formation in second reflection horizon also can be a plurality of sides that present, as the down backlight unit structure synoptic diagram of Fig. 7.This figure is an another embodiment of the present invention, comprises as Fig. 1, a luminescence chip 11, one first reflection horizon 12, a substrate 13 and a plurality of second reflection horizon 71 shown in Figure 3.This luminescence chip 11 is in order to producing at least one light source as described in Figure 1, and this first reflection horizon 12 is made of the good transparent material of light transmission, and this material can be the good acryl of light transmission, the transparent material that contains PC or glass etc.; This first reflection horizon 12 is as Fig. 1 and the inverted cone-shaped 121 that is shown in Figure 3, this first reflection horizon 12 is positioned at the top of this luminescence chip 11 and is located on this substrate 13, and this first reflection horizon 12 is to be used to reflect this luminescence chip 11 penetrate light sources and form a first 21 as Fig. 2, light source shown in Figure 3, in addition, these a plurality of second reflection horizon 71 also are made of institutes such as light transmission good transparent material such as acryl, the transparent material that contains PC or glass.These a plurality of second reflection horizon 71 are located at the top in this first reflection horizon 12 and are used to reflect this luminescence chip 11 and penetrate light sources and form a second portion 22 as Fig. 3, the described light source of Fig. 4.These a plurality of second reflection horizon 71 comprise a plane 711 and from downward two flanks 712 that extend of the dual-side on this plane 711, this two flank 712 forms an inverted V-shaped shape space.One wing of this two flank 712 can be fitted mutually with a wing of two flanks 712 in adjacent this second reflection horizon 71.In addition, the dual-side on this plane 711 more extends upward in addition two flanks 713, and this two flank 713 forms a V-arrangement space, and a wing of this two flank 713 in this second reflection horizon 71 can be fitted mutually with a wing of two flanks 713 in adjacent this second reflection horizon 71.Form a side in these a plurality of second reflection horizon 71 as shown in this figure by extending about above-mentioned continuous laminating type, so can fully repeatedly reflect a second portion 22 of formed this light source of forward bright dipping that penetrates this first reflection horizon 12.
Obtain a side in a plurality of second reflection horizon and then constitute outside the direct-type backlight unit structure divided by the forming mode among Fig. 7, a plurality of second reflection horizon can also mode as described below be shaped.See also the down backlight unit structure of Fig. 8, this figure is an another embodiment of the present invention, comprises as shown in Figure 7 a luminescence chip 11, one first reflection horizon 12, a substrate 13 and a plurality of second reflection horizon 81.Effect, the material in this luminescence chip 11 and this first reflection horizon 12 and concern that the position is described as Fig. 7.These a plurality of second reflection horizon 81 are located at the top in this first reflection horizon 12 and are used to reflect that this luminescence chip 11 penetrates light sources and a second portion 22 of the light source that forms, these a plurality of second reflection horizon 81 comprise a plane 811 and from upwardly extending two flanks 812 of the dual-side on this plane 811, this two flank 812 forms a V-arrangement space.One wing of two flanks 812 in these a plurality of second reflection horizon 81 can be fitted mutually with a wing of two flanks 812 in adjacent this second reflection horizon 81, forms as shown in this figure this a plurality of second reflection horizon 81 by extending about above-mentioned continuous laminating type fully repeatedly to reflect a second portion 22 of formed this light source of forward bright dipping that penetrates this first reflection horizon 12.
Be used to improve the fully problem of mixed light of small part light source by the second set reflection horizon of above-mentioned different embodiment, and formation a kind of down backlight unit structure of the present invention be set with this.The above is an illustrative only, and is not in order to restriction the present invention.Do not breaking away from spirit of the present invention and category for being familiar with those of ordinary skill in the art, any equivalent modifications or change to the present invention carries out all should be included in the claim of the present invention.
Claims (9)
1, a kind of down backlight unit structure comprises:
At least one luminescence chip is in order to produce at least one light source;
One first reflection horizon, a first that is positioned at the top of this luminescence chip and is used to reflect this light source; And
One second reflection horizon is positioned at the top in this first reflection horizon and is used to reflect a second portion of this light source,
Wherein this second reflection horizon comprises that a plane reaches two flanks that extend from the dual-side on this plane downwards, the space of the wing one-tenth one inverted V-shaped shape in these both sides,
Wherein this dual-side on this plane more comprises upwardly extending two flanks in addition, wing one-tenth one V-arrangement space, these both sides,
This inverted V-shaped shape space and the formation one of this plane are first angle than mitre, and the scope of this first angle is between 35 to 45 degree; This V-arrangement space and this plane form i.e. second angle of a less angle, and this second angular range is between five to ten degree.
2, down backlight unit structure as claimed in claim 1, wherein this first reflection horizon is an inverted cone shape.
3, down backlight unit structure as claimed in claim 1, wherein this first reflection horizon comprises transparent material.
4, down backlight unit structure as claimed in claim 1, wherein this second reflection horizon comprises transparent material.
5, a kind of down backlight unit structure comprises:
At least one luminescence chip is in order to produce at least one light source;
One first reflection horizon, a first that is positioned at the top of this luminescence chip and is used to reflect this light source; And
A plurality of second reflection horizon are positioned at the top in this first reflection horizon and are used to reflect a second portion of this light source,
Wherein these a plurality of second reflection horizon comprise that respectively a plane reaches two flanks that extend from the dual-side on this plane downwards, wing one-tenth one inverted V-shaped shape space, these both sides,
Wherein this dual-side on this plane more comprises upwardly extending two flanks in addition, wing one-tenth one V-arrangement space, these both sides.
This inverted V-shaped shape space and the formation one of this plane are first angle than mitre, and the scope of this first angle is between 35 to 45 degree; This V-arrangement space and this plane form i.e. second angle of a less angle, and this second angular range is between five to ten degree.
6, down backlight unit structure as claimed in claim 5, wherein this first reflection horizon is an inverted cone shape.
7, down backlight unit structure as claimed in claim 5, wherein upwardly extending two flanks in this second reflection horizon can be fitted mutually with these upwardly extending two flanks in adjacent this second reflection horizon, and two flanks that extend can be fitted mutually with two flanks of the downward extension in adjacent this second reflection horizon downwards.
8, down backlight unit structure as claimed in claim 5, wherein this first reflection horizon comprises transparent material.
9, down backlight unit structure as claimed in claim 5, wherein this second reflection horizon comprises transparent material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100626213A CN100478760C (en) | 2005-04-01 | 2005-04-01 | Down backlight unit structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100626213A CN100478760C (en) | 2005-04-01 | 2005-04-01 | Down backlight unit structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1658045A CN1658045A (en) | 2005-08-24 |
| CN100478760C true CN100478760C (en) | 2009-04-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100626213A Expired - Fee Related CN100478760C (en) | 2005-04-01 | 2005-04-01 | Down backlight unit structure |
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| CN (1) | CN100478760C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101625085B (en) * | 2005-12-31 | 2011-10-12 | 财团法人工业技术研究院 | Light source packaging structure |
| CN100403128C (en) * | 2006-02-08 | 2008-07-16 | 友达光电股份有限公司 | Backlight module and light diffusion assembly |
| CN104110612B (en) * | 2014-07-07 | 2016-06-08 | 京东方光科技有限公司 | Direct backlight source structure, backlight source module and liquid crystal display |
| CN109148428B (en) * | 2018-07-16 | 2021-07-30 | 海迪科（南通）光电科技有限公司 | Direct type backlight source structure applied to mini and micro backlight and manufacturing method thereof |
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2005
- 2005-04-01 CN CNB2005100626213A patent/CN100478760C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1658045A (en) | 2005-08-24 |
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