CN202835008U - Direct type backlight module - Google Patents
Direct type backlight module Download PDFInfo
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- CN202835008U CN202835008U CN 201220380780 CN201220380780U CN202835008U CN 202835008 U CN202835008 U CN 202835008U CN 201220380780 CN201220380780 CN 201220380780 CN 201220380780 U CN201220380780 U CN 201220380780U CN 202835008 U CN202835008 U CN 202835008U
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- mode set
- down straight
- aphototropism mode
- straight aphototropism
- grid layer
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Abstract
The utility model provides a direct type backlight module, which comprises a rear panel, a reflective sheet, a plurality of light sources, a grid layer and an optical membrane, wherein one end of the reflective sheet is connected with the periphery of the rear panel; the reflective sheet and the rear panel form a receiving cavity; the light sources and the grid layer are positioned in the receiving cavity; the optical membrane is supported at the other end of the reflective sheet and used for covering the receiving cavity; the outer surface of the grid layer is a reflecting surface; the grid layer comprises a plurality of receiving grids formed in a way that a plurality of horizontal baffles and a plurality of longitudinal baffles are arranged in a criss-cross way; and the light sources are positioned in the corresponding receiving grids. According to the direct type backlight module, light rays are transmitted in lighted parts only due to the change of the grid layer on the light rays, and only very few light rays are diffused to unlighted parts, so that the 3D display effect can be enhanced on one hand and the 2D display effect is not influenced on the other hand.
Description
Technical field
The invention relates to field of liquid crystal display, and particularly about a kind of down straight aphototropism mode set for liquid crystal indicator.
Background technology
The principle of shutter (Shutter Glass) 3D technology is according to human eye the refresh time of image frequency to be realized, by improving the fast refresh rate (will reach 120Hz at least) of picture, each fast refresh image with 60Hz of left eye and right eye just can allow the people can not produce the shake sense to image, and the frame number that maintenance is identical with the 2D video, two eyes of spectators are seen the different pictures of quick switching, and in brain, produce illusion, just watch stereopsis.
Because liquid crystal scanning is carried out line by line, and remain to after having scanned when next field signal sends over always and just change.Therefore, if do not add control to backlight, get some time points, the image that we see be that a upper field picture and next field picture are seen simultaneously all the time, and 3D requires some time points, can only see one image, for example left-eye image or eye image are crosstalked with reduction.Therefore, need ask the illumination that can close at described certain time point respective regions for the down straight aphototropism mode set that illumination is provided to liquid crystal, make described zone be black, eyes can only be seen a complete image like this.
But, in the present down straight aphototropism mode set, generally adopt the structure of straight-down negative lamp bar, usually, there is not barrier between lamp bar and the lamp bar, light can Free propagation.Even only open a street lamp pipe, light also can propagate into whole zone, that is to say at described certain time point and close the illumination of respective regions and keep in the situation that other light source opens, the light source of these unlatchings can be with most of light scattering to described zone, thereby the black effect of impact, and then affect the 3D display effect, even can't realize the 3D display effect.
Summary of the invention
For the problems referred to above, the purpose of this invention is to provide a kind of down straight aphototropism mode set that can overcome the problems referred to above.
A kind of down straight aphototropism mode set comprises: backboard, reflector plate, a plurality of light sources, grid layer and blooming piece, one end of described reflector plate is connected with the periphery of described backboard and forms accommodating cavity with described backboard, described a plurality of light source and described grid layer are positioned at described accommodating cavity, described blooming piece is carried on the other end of described reflector plate and covers described accommodating cavity, the outer surface of described grid layer is reflecting surface, described grid layer comprises that a plurality of diaphragm plates and crisscross setting of a plurality of midfeather form a plurality of accommodating grids, and each described light source is positioned at an accommodating grid corresponding with it.
In one embodiment of the invention, described a plurality of light source is light emitting diode.
In one embodiment of the invention, the rising angle of described a plurality of light sources is θ, θ〉pi/2.
In one embodiment of the invention, the light-emitting area of described light source and described blooming piece are H near the distance of described light source one side, be A along the distance between the center of two light sources of the adjacent arrangement of first direction in described a plurality of light source, be B along the distance between the center of two light sources of the adjacent arrangement of second direction in described a plurality of light source, described accommodating grid is a along the width of described first direction, described accommodating grid is b along the width of described second direction, a=A, b=B, H〉1.1A, if A〉B, then 0.5Acot (θ/2)＜h＜H, if A＜B, then 0.5Bcot (θ/2)＜h＜H.
In one embodiment of the invention, described diaphragm plate and described midfeather comprise that the described reflecting layer of support covers described support.
In one embodiment of the invention, the material in described reflecting layer is the long reflectivity of all-wave greater than 75% reflecting material.
In one embodiment of the invention, described grid layer is formed greater than the direct injection moulding of 75% reflecting material by the long reflectivity of all-wave.
In one embodiment of the invention, the outer surface of described grid layer is through polishing or electroplating processes.
In one embodiment of the invention, described reflector plate and described back shaped meeting at right angles or the obtuse angle.
In one embodiment of the invention, described blooming piece is one or more the combination in diffusion sheet, prismatic lens, the brightness enhancement film.
With respect to prior art, adopt down straight aphototropism mode set of the present invention, be subject to grid layer to the change of light, light only lighting the part transmission, only has few light to be diffused into light source and closes the place.And by simulated experiment checking, can find out that described down straight aphototropism mode set can strengthen the 3D display effect on the one hand, can not affect because having increased grid layer the 2D display effect again on the other hand.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of specification, and for above and other objects of the present invention, feature and advantage can be become apparent, below especially exemplified by embodiment, and the cooperation accompanying drawing, be described in detail as follows.
Description of drawings
Fig. 1 is the structural representation of down straight aphototropism mode set preferred embodiment provided by the invention.
Fig. 2 is the decomposed schematic diagram of the down straight aphototropism mode set of Fig. 1.
Fig. 3 is the schematic cross-section along the III-III line of the down straight aphototropism mode set of Fig. 1.
Fig. 4 is the Illumination Distribution figure that the down straight aphototropism mode set of Fig. 1 is in the first illuminating state.
Fig. 5 is the Illumination Distribution figure that the down straight aphototropism mode set of Fig. 1 is in the second illuminating state.
The specific embodiment
Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention, below in conjunction with accompanying drawing and preferred embodiment, the specific embodiment, structure, feature and the effect thereof of the down straight aphototropism mode set that foundation the present invention is proposed are described in detail as follows:
Relevant aforementioned and other technology contents of the present invention, Characteristic can be known to present in the following detailed description that cooperates with reference to graphic preferred embodiment.By the explanation of the specific embodiment, when can being to reach technological means and the effect that predetermined purpose takes to be able to more deeply and concrete understanding to the present invention, yet appended graphic only provide with reference to the usefulness of explanation, the present invention is limited.
Fig. 1 is the structural representation of down straight aphototropism mode set preferred embodiment provided by the invention; Fig. 2 is the decomposed schematic diagram of the down straight aphototropism mode set of Fig. 1; Fig. 3 is the schematic cross-section along the III-III line of the down straight aphototropism mode set of Fig. 1.Please refer to Fig. 1 to Fig. 3, a kind of down straight aphototropism mode set 100 of the embodiment of the invention, it comprises base plate 102, a plurality of light source 104, grid layer 106 and blooming piece 108.
Described base plate 102 comprises rectangular back plate 121 and four reflector plates 122 that are connected with four edges of described backboard 121 respectively.Shape has a certain degree between described four reflector plates 122 and the described rectangular back plate 121, for example can be right angle as shown in the figure, also can set according to concrete needs for obtuse angle etc., and the present invention is not as limit.In addition, rectangular back plate 121 and four reflector plates 122 also can be integrated, form needed angle by the mode that bends.Described backboard 121 and described four reflector plates 122 surround accommodating cavity 123 jointly.Described a plurality of light source 104 and described grid layer 106 are positioned at described accommodating cavity 123.Preferably, have hole (figure does not show that hole is in the place of light source 104) on the backboard 121, can light source 104 is fixing.Preferably, backboard 121 one side that light source 104 is set also can be reflecting surface.The material of backboard 121 and reflector plate 122 can but be not limited to poly terephthalic acid class plastics (Polyethylene terephthalate is called for short PET or PETP) or Merlon (Polycarbonate is called for short PC).
Described blooming piece 108 is supported and is carried on the described base plate 102 by the other end of described four reflector plates 122, to cover described accommodating cavity 123, that is to say, described base plate 102 is oppositely arranged with described backboard 121, and described a plurality of light sources 104 and described grid layer 106 are between described backboard 121 and described blooming piece 108.In present embodiment, described blooming piece 108 is diffusion sheet.Certainly, described blooming piece 108 is not limited to only be diffuser plate, also can be prismatic lens or brightness enhancement film, perhaps is several combination in diffusion sheet, prismatic lens, the brightness enhancement film, and the present invention is not as limit.
In present embodiment, the outer surface of grid layer 106 is reflecting surface, and grid layer 106 comprises a plurality of diaphragm plates 161 and a plurality of midfeathers 162, that is to say that a plurality of diaphragm plates 161 and the outer surface of a plurality of midfeathers 162 are reflecting surface.A plurality of diaphragm plates 161 and a plurality of midfeather 162 are arranged on the backboard 121 and crisscross the setting forms a plurality of accommodating grids 163, each light source 104 is positioned at an accommodating grid 163 corresponding with it so that described a plurality of light source 104 with array distribution be arranged on the described backboard 121.A plurality of diaphragm plates 161 are not staggered mutually with the end of a plurality of midfeathers 162, but a plurality of diaphragm plates 161 are resisted against on the reflector plate 122 with the end of a plurality of midfeathers 162, and therefore adjacent two diaphragm plates 161 or midfeather 162 also form accommodating grid 163 with reflector plate 122.
Concrete, in present embodiment, grid layer 106 has a plurality of accommodating grid 163 of arranging along first direction and second direction.It (is in the present embodiment that described first direction is parallel to described accommodating grid 163 cross direction profiles directions, the long side direction of backboard 121), described second direction is parallel to described accommodating grid 163 vertical distribution arrangements (being in the present embodiment, the narrow edge direction of backboard 121).Please refer to Fig. 2, a is that accommodating grid 163 is along the width of described first direction; B is that accommodating grid 163 is along the width of second direction; A is the distance between the center of two light sources 104 adjacent in a plurality of light sources 104 of same horizontally-arranged/row, namely in a plurality of light sources 104 along the distance between the center of two Light-Emitting Diodes 104 of the adjacent arrangement of first direction; B is the distance between the center of two light sources 104 adjacent in a plurality of light sources 104 of same tandem/row, namely in a plurality of light sources 104 along the distance between the center of two Light-Emitting Diodes 104 of the adjacent arrangement of second direction.In present embodiment, preferably, a=A, b=B, that is to say, accommodating grid 163 equals in a plurality of light sources 104 along the distance A between the center of two Light-Emitting Diodes 104 of the adjacent arrangement of first direction along the width a of described first direction, accommodating grid 163 along the width b of second direction equal in a plurality of light sources 104 along between the center of two Light-Emitting Diodes 104 of the adjacent arrangement of second direction apart from B.Please refer to Fig. 3, h represents the height of accommodating grid 163, the mist degree that the choosing of the optimum upper limit of h is decided by diffuser plate and the reflectivity of reflecting material.
In present embodiment, light source 104 is light emitting diode, for example is white light-emitting diodes, certainly, according to actual needs, also can be the Light-Emitting Diode of the colors such as red, green, blue, or the light-emitting component that is formed by above-mentioned light emitting diode, the present invention is not as limit.See also Fig. 3, H is the light-emitting area 141 of light source 104 and the distance of blooming piece 108 bottom surfaces, that is to say that H is the light-emitting area 141 and the distance of blooming piece 108 near light source 104 1 sides of light source 104.In present embodiment, H〉A, the distance that is to say the light-emitting area 141 of light source 104 and blooming piece 108 bottom surfaces greater than in a plurality of light sources 104 along the distance between the center of two Light-Emitting Diodes 104 of the adjacent arrangement of first direction, preferred, H〉1.1A.θ is the rising angle of described light source 104.The rising angle of light source 104 with subjective unshadowed, satisfy optical demands and is as the criterion during selection.
In present embodiment, diaphragm plate 161 comprises support and reflecting layer with midfeather 162, and the reflecting layer covers support.The material in described reflecting layer is the long reflectivity of all-wave greater than 75% reflecting material, more preferably selects the long reflectivity of all-wave greater than 90% material, optimally is chosen as the long reflectivity of all-wave greater than 98% material.In other embodiments, grid layer 106 can also adopt the long reflectivity of all-wave to make by direct injection moulding greater than 75% reflecting material, or grid layer 106 adopts surface finish or electroplating processes to reach the requirement to reflectivity.Need to prove that a plurality of diaphragm plates 161 are not limited to above several form with the formation method of the reflecting surface of a plurality of midfeathers 162 among the present invention, and the material of reflecting surface there is no particular limitation, as long as satisfy corresponding reflectivity.
In present embodiment, preferred, described down straight aphototropism mode set 100 satisfies following relational expression: H simultaneously〉1.1A, θ〉pi/2, a=A, if b=B is A〉B, if 0.5Acot (θ/2)＜h＜H then is A＜B, then 0.5Bcot (θ/2)＜h＜H.Please refer to the drawing 4, by experiment simulation, be about 74mm at H, A is about 65mm, B is about 63mm, in the situation of θ=120 °, when the light source 104 of down straight aphototropism mode set 100 is all opened, experimental result obtains the uniform area source of bright dipping, and can find out by analysis chart 4, although increased grid layer, the optics homogeneity is not affected, consistent with common 2D display effect, that is to say that grid layer does not affect the normally luminous of each light source, the light that just each light source is sent concentrates on outgoing in zone corresponding to its place grid.Please refer to Fig. 5, under identical experiment condition, when light source 104 parts of down straight aphototropism mode set 100 are opened, when part is closed, as in Fig. 2, the light source 104 shown in the dotted line in the zone is opened, and the light source 104 of dotted line exterior domain is closed, experimental result obtains shown in the dotted line place corresponding in the zone and obtains the uniform area source of bright dipping, and the dotted line exterior domain be even section secretly.Can see, be subject to the change of 106 pairs of light of grid layer, light only lighting the part transmission, only has few light can be diffused into light source and closes the place.By above-mentioned simulated experiment, can find out that down straight aphototropism mode set 100 provided by the invention has reached the effect of theory demands fully.
In sum, with respect to prior art, adopt down straight aphototropism mode set of the present invention, be subject to grid layer to the change of light, light only lighting the part transmission, only has few light to be diffused into light source and closes the place.And by simulated experiment checking, can find out that described down straight aphototropism mode set can strengthen the 3D display effect on the one hand, not affect again on the other hand the 2D display effect.
The above, only be embodiments of the invention, be not that the present invention is done any pro forma restriction, although the present invention discloses as above with embodiment, yet be not to limit the present invention, any those skilled in the art, within not breaking away from the technical solution of the present invention scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be not break away from the technical solution of the present invention content, any simple modification that foundation technical spirit of the present invention is done above embodiment, equivalent variations and modification all still belong in the scope of technical solution of the present invention.
Claims (10)
1. down straight aphototropism mode set, it is characterized in that, comprise: backboard, reflector plate, a plurality of light sources, grid layer and blooming piece, one end of described reflector plate is connected with the periphery of described backboard and forms accommodating cavity with described backboard, described a plurality of light source and described grid layer are positioned at described accommodating cavity, described blooming piece is carried on the other end of described reflector plate and covers described accommodating cavity, the outer surface of described grid layer is reflecting surface, described grid layer comprises that a plurality of diaphragm plates and crisscross setting of a plurality of midfeather form a plurality of accommodating grids, and each described light source is positioned at an accommodating grid corresponding with it.
2. down straight aphototropism mode set as claimed in claim 1 is characterized in that, described a plurality of light sources are light emitting diode.
3. down straight aphototropism mode set as claimed in claim 2 is characterized in that, the rising angle of described a plurality of light sources is θ, θ〉pi/2.
4. down straight aphototropism mode set as claimed in claim 3, it is characterized in that, the light-emitting area of described light source and described blooming piece are H near the distance of described light source one side, be A along the distance between the center of two light sources of the adjacent arrangement of first direction in described a plurality of light source, be B along the distance between the center of two light sources of the adjacent arrangement of second direction in described a plurality of light source, described accommodating grid is a along the width of described first direction, described accommodating grid is b along the width of described second direction, a=A, b=B, H〉1.1A, if A〉B, if 0.5Acot (θ/2)＜h＜H then is A＜B, then 0.5Bcot (θ/2)＜h＜H.
5. down straight aphototropism mode set as claimed in claim 1 is characterized in that, described diaphragm plate and described midfeather comprise support and cover the reflecting layer of described support.
6. down straight aphototropism mode set as claimed in claim 5 is characterized in that, the material in described reflecting layer is the long reflectivity of all-wave greater than 75% reflecting material.
7. down straight aphototropism mode set as claimed in claim 1 is characterized in that, described grid layer is formed greater than the direct injection moulding of 75% reflecting material by the long reflectivity of all-wave.
8. down straight aphototropism mode set as claimed in claim 1 is characterized in that, described grid layer surface is through polishing or electroplating processes.
9. down straight aphototropism mode set as claimed in claim 1 is characterized in that, described reflector plate and described back shaped meeting at right angles or the obtuse angle.
10. down straight aphototropism mode set as claimed in claim 1 is characterized in that, described blooming piece is one or more the combination in diffusion sheet, prismatic lens, the brightness enhancement film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220380780 CN202835008U (en) | 2012-08-02 | 2012-08-02 | Direct type backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220380780 CN202835008U (en) | 2012-08-02 | 2012-08-02 | Direct type backlight module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202835008U true CN202835008U (en) | 2013-03-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220380780 Expired - Lifetime CN202835008U (en) | 2012-08-02 | 2012-08-02 | Direct type backlight module |
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| Country | Link |
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| CN (1) | CN202835008U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102798043A (en) * | 2012-08-02 | 2012-11-28 | 青岛海信电器股份有限公司 | Direct-lighting type backlight module |
| CN107957641A (en) * | 2016-10-17 | 2018-04-24 | 群创光电股份有限公司 | Display device |
| CN114527600A (en) * | 2022-03-03 | 2022-05-24 | 武汉华星光电技术有限公司 | Backlight module and display panel with same |
-
2012
- 2012-08-02 CN CN 201220380780 patent/CN202835008U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102798043A (en) * | 2012-08-02 | 2012-11-28 | 青岛海信电器股份有限公司 | Direct-lighting type backlight module |
| CN107957641A (en) * | 2016-10-17 | 2018-04-24 | 群创光电股份有限公司 | Display device |
| CN114527600A (en) * | 2022-03-03 | 2022-05-24 | 武汉华星光电技术有限公司 | Backlight module and display panel with same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 266555 Qingdao economic and Technological Development Zone, Shandong, Hong Kong Road, No. 218 Patentee after: Hisense Video Technology Co.,Ltd. Address before: 266555 Qingdao economic and Technological Development Zone, Shandong, Hong Kong Road, No. 218 Patentee before: QINGDAO HISENSE ELECTRONICS Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130327 |
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| CX01 | Expiry of patent term |