CN103090264A - Direct illumination type backlight module - Google Patents

Direct illumination type backlight module Download PDF

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Publication number
CN103090264A
CN103090264A CN2012103753259A CN201210375325A CN103090264A CN 103090264 A CN103090264 A CN 103090264A CN 2012103753259 A CN2012103753259 A CN 2012103753259A CN 201210375325 A CN201210375325 A CN 201210375325A CN 103090264 A CN103090264 A CN 103090264A
Authority
CN
China
Prior art keywords
backlight module
type backlight
direct type
supporting construction
cover
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN2012103753259A
Other languages
Chinese (zh)
Inventor
李一昌
廖国翰
蔡昇颖
柯俊宇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chi Lin Optoelectronics Co Ltd
Original Assignee
Chi Lin Optoelectronics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to TW100140419 priority Critical
Priority to TW100140419A priority patent/TWI589962B/en
Application filed by Chi Lin Optoelectronics Co Ltd filed Critical Chi Lin Optoelectronics Co Ltd
Publication of CN103090264A publication Critical patent/CN103090264A/en
Pending legal-status Critical Current

Links

Abstract

The present invention relates to a direct illumination type backlight module which comprises the following components: a back board, a plurality of light sources, an optical film and at least one supporting structure, wherein the supporting structure is made of light-penetrable material. The light source and the supporting structure are provided in an accommodating space of the back board. The supporting structure is used for supporting the optical film above and is provided with a cover body. The side wall of the cover body is made of light-penetrable material. Furthermore, the supporting structure can be a sheet-shaped member. Therefore, dark pattern on the surface of the optical film can be reduced.

Description

Direct type backlight module
Technical field
The present invention relates to a kind of direct type backlight module, particularly a kind of direct type backlight module with supporting construction.
Background technology
With reference to figure 1, show the cross-sectional schematic of existing direct type backlight module.This direct type backlight module 1 comprises a backboard 11, a plurality of LED12, a diffuser plate 13 and a plurality of support column 14.This backboard 11 has an accommodation space 111.Described LED12 is positioned at this accommodation space 111.This diffuser plate 13 is positioned at described LED12 top.One end of described support column 14 is fixedly arranged on backboard 11, and the other end contacts this diffuser plate 13, in order to support this diffuser plate 13, produces to prevent this diffuser plate 13 phenomenon that hangs.
Yet, although described support column 14 solves the problem that hangs of this diffuser plate 13, because described support column 14 is solid cylinder, thereby can cover the part light that described LED12 sends, cause can producing dark line on the surface of this diffuser plate 13.In addition, along with this diffuser plate 13 is more and more thinner, this dark line can be more obvious.
Therefore, be necessary to provide the direct type backlight module of an innovation and rich progressive, to address the above problem.
Summary of the invention
The invention provides a kind of direct type backlight module, it comprises a backboard, a plurality of light source, a blooming piece and at least one supporting construction.This backboard has an accommodation space.Described light source is positioned at this accommodation space.This blooming piece is positioned at above described light source.This supporting construction is positioned at this accommodation space, and in order to support this blooming piece, this supporting construction has a cover body, and the sidewall of this cover body is transparent material, and defines a cavity.
In this direct type backlight module, this supporting construction can prevent that this blooming piece from producing the phenomenon that hangs.In addition, this cover body is light transmissive material, and its external form is inverted U-shaped and for hollow, thereby can cover hardly the light that described light source sends, and therefore can be reduced in the dark line situation on this blooming piece surface.
The present invention separately provides a kind of direct type backlight module, and it comprises a backboard, a plurality of light source, a blooming piece and at least one supporting construction.This backboard has an accommodation space.Described light source is positioned at this accommodation space.This blooming piece is positioned at above described light source.This supporting construction is positioned at this accommodation space, and is transparent material, and this supporting construction is plates, and this blooming piece of one end in contact is to support this blooming piece.
Description of drawings
Fig. 1 shows the cross-sectional schematic of existing direct type backlight module;
Fig. 2 shows the cross-sectional schematic of an embodiment of direct type backlight module of the present invention;
Fig. 3 shows the schematic top plan view after the direct type backlight module of Fig. 2 removes blooming piece;
Fig. 4 shows the cross-sectional schematic of another embodiment of direct type backlight module of the present invention;
Fig. 5 shows the schematic top plan view after the direct type backlight module of Fig. 4 removes blooming piece;
Fig. 6 shows the cross-sectional schematic of another embodiment of direct type backlight module of the present invention;
Fig. 7 shows the schematic top plan view after the direct type backlight module of Fig. 6 removes blooming piece;
Fig. 8 shows the cross-sectional schematic of another embodiment of direct type backlight module of the present invention;
Fig. 9 shows the schematic top plan view after the direct type backlight module of Fig. 8 removes blooming piece;
Figure 10 shows the cross-sectional schematic of another embodiment of direct type backlight module of the present invention; And
Figure 11 shows the schematic top plan view after the direct type backlight module of Figure 10 removes blooming piece.
[main element symbol description]
1 existing direct type backlight module
One embodiment of 2 direct type backlight modules of the present invention
Another embodiment of 2a direct type backlight module of the present invention
Another embodiment of 3 direct type backlight modules of the present invention
Another embodiment of 3a direct type backlight module of the present invention
Another embodiment of 4 direct type backlight modules of the present invention
11 backboards
12????LED
13 diffuser plates
14 support columns
21 backboards
22 light sources
23 blooming pieces
24 supporting constructions
The 24a supporting construction
The 24b supporting construction
25 cover bodies
26 cover bodies
27 fore-sets
28 plates
111 accommodation spaces
211 accommodation spaces
212 draw-in grooves
213 open-works
251 cavities
252 extend bead
261 cavities
262 extend bead
281 protuberances
The α drift angle.
The specific embodiment
With reference to figure 2, show the cross-sectional schematic of an embodiment of direct type backlight module of the present invention.This direct type backlight module 2 comprises a backboard 21, a plurality of light source 22, a blooming piece 23 and at least one supporting construction 24.This backboard 21 has an accommodation space 211.Described light source 22 is positioned at this accommodation space 211.In the present embodiment, described light source 22 is LED; Yet in other embodiments, described light source 22 can be fluorescent tube (CCFL).This blooming piece 23 is positioned at described light source 22 tops.In the present embodiment, this blooming piece 23 is diffuser plate, and its thickness is less than 2mm, for example 1.5mm.
This supporting construction 24 is positioned at this accommodation space 211, in order to support this blooming piece 23.This supporting construction 24 has a cover body 25, and the sidewall of this cover body 25 is transparent material, and defines a cavity 251.In the present embodiment, this sidewall of this cover body 25 has the thickness of homogeneous, and preferably, the thickness of this sidewall of this cover body 25 is between 0.5 ~ 1.5mm.In the present embodiment, this supporting construction 24 is that this cover body 25 is own, and one end (upper end) contacts and support this blooming piece 23, and the other end (lower end) is fixed on this backboard 21.
In the present embodiment, this cover body 25 lower ends have one and extend bead 252, and this backboard 21 has the draw-in groove corresponding with this extension bead 252 212.These extension bead 252 revotating cards are formed on this draw-in groove 212, make this supporting construction 24 be fixed on this backboard 21.Be understandable that, this supporting construction 24 also can utilize other modes (such as sealed, bonding, riveted or plug etc.) to be fixed on this backboard 21.In addition, if this backboard 21 tops have the reflector plate (not shown), this supporting construction 24 can be passed this reflector plate and is fixed on this backboard 21, or this supporting construction 24 can be fixed on this reflector plate.
With reference to figure 3, the direct type backlight module of demonstration Fig. 2 removes the schematic top plan view after blooming piece.This direct type backlight module 2 comprises four supporting constructions 24, and it is positioned at the middle position of this accommodation space 211, and is scattered between described light source 22.
In this direct type backlight module 2, this supporting construction 24 can prevent that this blooming piece 23 from producing the phenomenon that hangs.In addition, this cover body 25 is light transmissive material, and its external form is inverted U-shaped and for hollow, and is few because covering the light that described light source 22 sends, so can be reduced in the dark line situation on this blooming piece 23 surfaces.
With reference to figure 4 and Fig. 5, Fig. 4 shows the cross-sectional schematic of another embodiment of direct type backlight module of the present invention, and Fig. 5 shows the schematic top plan view after the direct type backlight module of Fig. 4 removes blooming piece.The direct type backlight module 2a of the present embodiment and Fig. 2 and direct type backlight module 2 shown in Figure 3 are roughly the same, wherein identical element is given identical numbering, its difference be in, in the present embodiment, each supporting construction 24 covers one of them of described light source 22.That is one of them of described light source 22 is positioned among this cavity 251 of this cover body 25.In the present embodiment, due to this supporting construction 24 be positioned at a light source 22 directly over, so it is apart from other light sources 22 farthest, and is also minimum on the impact of other light sources 22, adds that this cover body 25 is light transmissive material.Therefore, can more be reduced in the dark line situation on this blooming piece 23 surfaces.
With reference to figure 6, show the cross-sectional schematic of another embodiment of direct type backlight module of the present invention.The direct type backlight module 3 of the present embodiment and Fig. 2 and direct type backlight module 2 shown in Figure 3 are roughly the same, and wherein identical element is given identical numbering, and its difference is in the pattern of this supporting construction 24a.In the present embodiment, this supporting construction 24a has a cover body 26 and a fore-set 27.The sidewall of this cover body 26 is transparent material, and defines a cavity 261.This sidewall of this cover body 26 has the thickness of homogeneous, and preferably, the thickness of this sidewall of this cover body 26 is between 0.5 ~ 1.5mm.One end (lower end) of this fore-set 27 connects this cover body 26, and the other end (upper end) contacts and support this blooming piece 23.These fore-set 27 light-permeables or light tight, its surface can have a plurality of micro-structurals or cloudy surface processing in addition.
This fore-set 27 is a cone, and it has an apex angle α, and this apex angle α is between 5 ~ 15 degree, and the Breadth Maximum of this fore-set 27 is between 2 ~ 7mm.Preferably, this cover body 26 and this fore-set 27 are one of the forming.Similarly, this cover body 26 lower ends have one and extend bead 262, are formed on the draw-in groove 212 of this backboard 21 in order to revotating card, make this supporting construction 24a be fixed on this backboard 21.
In addition, this supporting construction 24a can utilize engaging, sealed, bonding, riveted or the mode such as plug, and is fixed on this backboard 21.Again, if this backboard 21 tops have the reflector plate (not shown), this supporting construction 24a can pass this reflector plate and be fixed on this backboard 21, or this supporting construction 24a can be fixed on this reflector plate.
With reference to figure 7, the direct type backlight module of demonstration Fig. 6 removes the schematic top plan view after blooming piece.This direct type backlight module 3 comprises four supporting construction 24a, and it is positioned at the middle position of this accommodation space 211, and is scattered between described light source 22.
In this direct type backlight module 3, this supporting construction 24a can prevent that this blooming piece 23 from producing the phenomenon that hangs.In addition, because this fore-set 27 is a thin type cylinder, cover the light that described light source 22 sends few, therefore can be reduced in the dark line situation on this blooming piece 23 surfaces.
With reference to figure 8, show the cross-sectional schematic of another embodiment of direct type backlight module of the present invention.With reference to figure 9, the direct type backlight module of demonstration Fig. 8 removes the schematic top plan view after blooming piece.The direct type backlight module 3a of the present embodiment and the direct type backlight module 3 of Figure 6 and Figure 7 are roughly the same, wherein identical element is given identical numbering, its difference be in, in the present embodiment, each supporting construction 24a covers one of them of described light source 22.That is one of them of described light source 22 is positioned among this cavity 261 of this cover body 26.
In addition, penetrable this cover body 26 of the light of light source 22, wherein part light can be directed in this fore-set 27, and a plurality of micro-structurals on the surface by this fore-set 27 or cloudy surface are processed, and light can be derived in this fore-set 27.Perhaps, a plurality of micro-structurals or cloudy surface are processed half or part surface of this fore-set 27 only take shape in contiguous this cover body 26.
In the present embodiment, due to this supporting construction 24a be positioned at a light source 22 directly over, so it apart from other light sources 22 farthest, impact on other light sources 22 is also minimum, add that this fore-set 27 is a thin type cylinder, cover the light that described light source 22 sends few, can more be reduced in the dark line situation on this blooming piece 23 surfaces.
With reference to Figure 10, show the cross-sectional schematic of another embodiment of direct type backlight module of the present invention.The direct type backlight module 4 of the present embodiment and Fig. 2 and direct type backlight module 2 shown in Figure 3 are roughly the same, and wherein identical element is given identical numbering, and its difference is in the pattern of this supporting construction 24b.In the present embodiment, this supporting construction 24b is plates 28, in order to support this blooming piece 23.These plates 28 are transparent material, and have the thickness of homogeneous, and preferably, the thickness of these plates 28 is between 0.5 ~ 1.5mm.In the present embodiment, these plates 28 are triangle, and one end (upper end) contacts and support this blooming piece 23, and the other end (lower end) is fixed on this backboard 21.In other embodiments, these plates can be also rectangle or other shapes.
In the present embodiment, this plates 28 lower ends have a protuberance 281, and this backboard 21 has the open-work corresponding with this protuberance 281 213.This protuberance 281 passes this open-work 213 and is equipped in this backboard 21, makes this supporting construction 24b be fixed on this backboard 21.Be understandable that, this supporting construction 24b also can utilize other modes (such as sealed, bonding, riveted or plug etc.) to be fixed on this backboard 21.In addition, if this backboard 21 tops have the reflector plate (not shown), this supporting construction 24b can pass this reflector plate and be fixed on this backboard 21, or this supporting construction 24b can be fixed on this reflector plate.
With reference to Figure 11, the direct type backlight module of demonstration Figure 10 removes the schematic top plan view after blooming piece.This direct type backlight module 4 comprises four supporting construction 24b, and it is positioned at the middle position of this accommodation space 211.Each supporting construction 24b arranges between light sources 22 two, preferably, and the orientation of parallel described light source 22 (that is the level in figure or vertical direction).
In this direct type backlight module 4, this supporting construction 24b can prevent that this blooming piece 23 from producing the phenomenon that hangs.In addition, this supporting construction 24b is light transmissive material, and is few because covering the light that described light source 22 sends, and therefore can be reduced in the dark line situation on this blooming piece 23 surfaces.
Direct type backlight module of the present invention further can comprise other diaphragm, and it is arranged at the top of this blooming piece 23, and other diaphragm can comprise one or its combination as diffusion sheet, concentration piece, reflective brightness enhancement film (DBEF) etc., but not as limit.
Above-described embodiment only is explanation principle of the present invention and effect thereof, and unrestricted the present invention, so those skilled in the art modify to above-described embodiment and change and still do not take off spirit of the present invention.Interest field of the present invention should be as listed in appending claims.

Claims (15)

1. direct type backlight module comprises:
One backboard has an accommodation space;
A plurality of light sources are positioned at this accommodation space;
One blooming piece is positioned at above described light source; And
At least one supporting construction is positioned at this accommodation space, and in order to support this blooming piece, this supporting construction is transparent material.
2. direct type backlight module as claimed in claim 1, wherein this supporting construction has a cover body, and the sidewall of this cover body is transparent material, and defines a cavity.
3. direct type backlight module as claimed in claim 2, wherein this supporting construction is this cover body, this blooming piece of one end in contact.
4. direct type backlight module as claimed in claim 2, wherein this supporting construction also has a fore-set, and an end of this fore-set connects this cover body, and the other end contacts this blooming piece.
5. direct type backlight module as claimed in claim 4, wherein the surface of this fore-set has a plurality of micro-structurals.
6. direct type backlight module as claimed in claim 4, wherein this fore-set has a drift angle, and this drift angle is between 5 ~ 15 degree.
7. direct type backlight module as claimed in claim 4, wherein the Breadth Maximum of this fore-set is between 2 ~ 7mm.
8. direct type backlight module as claimed in claim 2, one of them of wherein said light source is positioned among this cavity of this cover body.
9. direct type backlight module as claimed in claim 2, wherein this sidewall of this cover body has the thickness of homogeneous.
10. direct type backlight module as claimed in claim 9, wherein the thickness of this sidewall of this cover body is between 0.5 ~ 1.5mm.
11. direct type backlight module as claimed in claim 1, wherein this supporting construction is fixed in this backboard.
12. direct type backlight module as claimed in claim 1, wherein this supporting construction is plates, and this blooming piece of one end in contact is to support this blooming piece.
13. direct type backlight module as claimed in claim 12, wherein this supporting construction has the thickness of homogeneous.
14. direct type backlight module as claimed in claim 13, wherein the thickness of this supporting construction is between 0.5 ~ 1.5mm.
15. direct type backlight module as claimed in claim 12, wherein this supporting construction is triangle or rectangle.
CN2012103753259A 2011-11-04 2012-09-29 Direct illumination type backlight module Pending CN103090264A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
TW100140419 2011-11-04
TW100140419A TWI589962B (en) 2011-11-04 2011-11-04 Direct type backlight module

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CN103090264A true CN103090264A (en) 2013-05-08

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TW (1) TWI589962B (en)

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CN104155790A (en) * 2014-09-03 2014-11-19 长智光电(四川)有限公司 Direct type liquid crystal module
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Publication number Publication date
JP2013098175A (en) 2013-05-20
JP2014060181A (en) 2014-04-03
JP5869594B2 (en) 2016-02-24
TWI589962B (en) 2017-07-01
TW201319688A (en) 2013-05-16
JP5658216B2 (en) 2015-01-21

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Application publication date: 20130508