CN201680293U - Light guide plate and backlight module thereof - Google Patents
Light guide plate and backlight module thereof Download PDFInfo
- Publication number
- CN201680293U CN201680293U CN2010201196045U CN201020119604U CN201680293U CN 201680293 U CN201680293 U CN 201680293U CN 2010201196045 U CN2010201196045 U CN 2010201196045U CN 201020119604 U CN201020119604 U CN 201020119604U CN 201680293 U CN201680293 U CN 201680293U
- Authority
- CN
- China
- Prior art keywords
- lgp
- light
- projected parts
- strip projected
- limit
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Planar Illumination Modules (AREA)
Abstract
The utility model relates to a light guide plate and a backlight module thereof. The light guide plate comprises an upper surface and a lower surface as well as a plurality of light guide areas, wherein each light guide area comprises a first edge and a second edge which are adjacent, the first edge is provided with a light source, the light source provides a light ray which is emitted into the light guide plate, the transmission direction of the light ray is parallel to the extension direction of the second edge, the light guide plate also comprises a plurality of strip-shaped bulges which are arranged on at least one of the upper surface and the lower surface of the light guide plate along the extension direction of the second edge; and the light ray can be transmitted in the strip-shaped bulges. The benefit is as follows: a bright line generated between the two spliced light guide plates can be eliminated.
Description
Technical field
The utility model relates to a kind of backlight module, relates in particular to the structure of LGP in this backlight module.
Background technology
LCD comprises display panels and backlight module.Along with light, the thin development trend of LCD, gradually adopted the lateral incident type backlight module of thinner thickness, it roughly is that (Light Emitting Diode LED) forms with LGP by light emitting diode.
LGP is the quite high optical module of optical accuracy.Be transformed into uniform surface light source via LGP in order to make from the line source of light emitting diode outgoing, thus usually the light scattering pattern can be set at the exiting surface of LGP, and this light scattering pattern is the continually varying form.
Yet, when the demand of a plurality of LGPs of splicing, (for example, the LGP of a plurality of small sizes is spliced and combined into a large-area LGP, to be applied in the large scale liquid crystal display; Perhaps, need the subregion illumination and splice a plurality of LGPs, different LGPs can carry out leaded light separately), if a plurality of LGPs are spliced up and down or about when splicing, the joint of two adjacent LGPs will produce extremely significantly bright line because light source influences each other.
Fig. 1 is the schematic top plan view of spliced LGP of the prior art and along the energy diagram of the area source of directions X.Please refer to Fig. 1, because the light scattering pattern (not illustrating) of LGP is a continually varying, so when a plurality of LGPs 100 of splicing (illustrating three among Fig. 1), at the splicing place G of LGP 100 (among Fig. 1, represent with thick line) produce discontinuous, make that the energy of area source of splicing place G is outstanding especially, and produce obvious bright line B.So, can reduce the uniformity of the area source that spliced LGP 100 provided.
Summary of the invention
The utility model technical issues that need to address have provided a kind of LGP, are intended to solve the above problems;
The utility model also provides the backlight module that adopts above-mentioned light conducting plate structure;
In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions:
LGP of the present utility model has a upper surface and a lower surface, this LGP has a plurality of leaded lights zone, each leaded light zone has one first limit adjacent one another are and one second limit, be provided with a light source at place, this first limit and this light source provides a light to incide in this LGP, the transmission direction of this light is parallel with the bearing of trend on this second limit, this LGP also comprises: a plurality of strip projected parts things, along the bearing of trend on this second limit and be arranged on this upper surface of this LGP and this lower surface at least one of them; And this light can transmit in those strip projected parts things;
Backlight module of the present utility model comprises: a LGP, have a upper surface and a lower surface, and this LGP has a plurality of leaded lights zone, and each leaded light zone has one first limit adjacent one another are and one second limit; This LGP also comprises: a plurality of strip projected parts things, along the bearing of trend on this second limit and be arranged on this upper surface of this LGP and this lower surface at least one of them; And a light source, being arranged on this place, first limit, this light source provides a light to incide in this LGP, and the transmission direction of this light is parallel with the bearing of trend on this second limit, and this light can be transmitted in those strip projected parts things.
Compared with prior art, the beneficial effects of the utility model are: can eliminate the bright line that is produced between two LGPs of splicing.
Description of drawings
Fig. 1 is the schematic top plan view of spliced LGP of the prior art and along the energy diagram of the area source of directions X.
Fig. 2 is the schematic diagram of a kind of LGP of the utility model preferred embodiment.
Fig. 3 A and Fig. 3 B are the side schematic view of connecting method of two kinds of LGPs of the utility model preferred embodiment.
Fig. 4 be the utility model preferred embodiment LGP schematic top plan view and along the energy diagram of the area source of directions X.
Fig. 5 A～Fig. 5 C is the schematic diagram of section shape of three kinds of strip projected parts things of the utility model preferred embodiment.
Fig. 6 is the schematic diagram of another LGP of the utility model preferred embodiment.
Fig. 7 A～Fig. 7 C is the schematic diagram of connected mode of three kinds of strip projected parts things of the utility model preferred embodiment.
Fig. 8 A～Fig. 8 C is the schematic diagram of height change mode of three kinds of strip projected parts things of the utility model preferred embodiment.
Fig. 9 is the schematic diagram of a kind of backlight module of the utility model preferred embodiment.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is described in further detail:
The utility model provides a kind of LGP, has special optical texture and can eliminate the bright line that is produced between two LGPs of splicing.
The utility model provides a kind of backlight module, uses above-mentioned LGP, and uniform surface light source can be provided.
The utility model proposes a kind of LGP, have upper surface and lower surface.LGP has a plurality of leaded lights zone, and each leaded light zone has first limit adjacent one another are and second limit.Be provided with light source at first limit place and light source provides light to incide in the LGP.The transmission direction of light is parallel with the bearing of trend on second limit.This LGP comprises: a plurality of strip projected parts things, along the bearing of trend on second limit and be arranged on the upper surface of LGP and lower surface at least one of them; And light can transmit in above-mentioned strip projected parts thing.
The utility model proposes a kind of backlight module again, comprising: LGP and light source.LGP has upper surface and lower surface.LGP has a plurality of leaded lights zone, and each leaded light zone has first limit adjacent one another are and second limit.LGP comprises a plurality of strip projected parts things, along the bearing of trend on second limit and be arranged on the upper surface of LGP and lower surface at least one of them.Light source is arranged on place, first limit.This light source provides light to incide in the LGP.The transmission direction of light is parallel with the bearing of trend on second limit, and light can be transmitted in above-mentioned strip projected parts thing.
In an embodiment of the present utility model, above-mentioned LGP more comprises: the light scattering pattern is arranged on the strip projected parts thing.
In an embodiment of the present utility model, the distribution density of the light scattering pattern of above-mentioned close light source ratio is low away from the distribution density of the light scattering pattern of light source.
In an embodiment of the present utility model, utilize radium-shine, sandblast or etching mode forms the light scattering pattern on the strip projected parts thing.
In an embodiment of the present utility model, the section shape of each above-mentioned strip projected parts thing comprises: semicircle, quadrangle or triangle.
In an embodiment of the present utility model, above-mentioned strip projected parts thing for join continuously each other, etc. continuously join or do not wait continuous joining.
In an embodiment of the present utility model, the height of above-mentioned strip projected parts thing for be equal to each other, rule changes or irregular variation.
In an embodiment of the present utility model, above-mentionedly between two adjacent leaded light zones, be provided with a groove.
In an embodiment of the present utility model, above-mentionedly between two adjacent leaded light zones, be provided with a section.
In an embodiment of the present utility model, above-mentioned strip projected parts thing is arranged on this upper surface and this lower surface simultaneously.
Based on above-mentioned, LGP of the present utility model has special optical texture (being the strip projected parts thing), can eliminate the obvious bright line of splicing place of a plurality of LGPs of splicing.In addition, can adopt proper optical design, the optical scattering pattern is set on the strip projected parts thing again according to demand; Perhaps, can change the spacing, height of strip projected parts thing etc., distribute and obtain needed area source.Use the backlight module of above-mentioned LGP that uniform surface light source can be provided.
LGP of the present utility model has special optical texture, so, when a plurality of LGP of splicing, can eliminate the obvious bright line of splicing place of LGP.Below, will enumerate several embodiment, and carry out detailed explanation for the utility model with reference to graphic.
Fig. 2 is the schematic diagram of a kind of LGP of the utility model preferred embodiment.Please refer to Fig. 2, LGP 200 has upper surface 200a and lower surface 200b.LGP 200 has a plurality of leaded lights zone 210, and each leaded light zone 210 has first limit 212 adjacent one another are and second limit 214.Be provided with light source S at 212 places, first limit and light source S provides light L to incide in the LGP 200.The transmission direction of light L is parallel with the bearing of trend on second limit 214.This LGP 200 comprises: a plurality of strip projected parts things 220, along the bearing of trend on second limit 214 and be arranged on the upper surface 200a of LGP 200 and lower surface 200b at least one of them.Light L can transmit in above-mentioned strip projected parts thing 220.
In Fig. 2, be to represent strip projected parts thing 220 in the mode that amplify the part.In fact, the size of strip projected parts thing 220 is quite little, obviously identification of naked eyes, and a plurality of strip projected parts things 220 are distributed on the LGP 200.
Particularly, it may be noted that in Fig. 2, be provided with groove 230 between two adjacent leaded light zones 210, the mode that this groove 230 can utilize is one-body molded, plastics penetrate directly marks off a plurality of leaded lights zone 210 on LGP 200.Each leaded light zone 210 can be carried out the subregion leaded light separately.As shown in Figure 2, after strip projected parts thing 220 is set, can eliminate the bright line that originally can take place, follow-uply be described in detail again in Fig. 4 at groove 230 places.
Fig. 3 A and Fig. 3 B are the side schematic view of connecting method of two kinds of LGPs of the utility model preferred embodiment.Please, between two adjacent leaded light zones 210, be provided with groove 230 earlier with reference to Fig. 3 A.In other words, each leaded light zone 210 can be considered as the LGP of a small size, form a large-area LGP 200 via the mode of one-body molded and delineation groove 230, and can carry out the subregion leaded light.
In addition, please refer to Fig. 3 B, also can between two adjacent leaded light zones 210, be provided with section C.In other words, each leaded light zone 210 can be considered as the LGP of a small size, form a large-area LGP 200 via the mode of splicing each other.Particularly, be that example illustrates with Fig. 3 B, strip projected parts thing 220 can be arranged on upper surface 200a and lower surface 200b simultaneously; Certainly, strip projected parts thing 220 also can only be arranged on upper surface 200a, or only is arranged on lower surface 200b.
Fig. 4 be the utility model preferred embodiment LGP schematic top plan view and along the energy diagram of the area source of directions X.Please refer to Fig. 4, when a plurality of LGP 200 of splicing, originally can produce obvious bright line at the splicing place G of LGP 200.Yet, see through a plurality of strip projected parts things 220 are set, can make the energy of area source present uniform distribution.Fig. 1 more of the prior art can obviously know, the energy in the area source of splicing place G among Fig. 4 can't be outstanding especially, and can eliminate visual obvious bright line.
Fig. 5 A～Fig. 5 C is the schematic diagram of section shape of three kinds of strip projected parts things of the utility model preferred embodiment.Please jointly with reference to Fig. 5 A～Fig. 5 C, the section shape of each strip projected parts thing 220 can be semicircle (shown in Fig. 5 A), quadrangle (shown in Fig. 5 B) or triangle (shown in Fig. 5 C).Certainly, can also be other suitable shape.Can utilize die (not illustrating) that optical sheet is impressed, and make LGP 200 with strip projected parts thing 220.Corresponding to the section shape of the strip projected parts thing 200 of above-mentioned Fig. 5 A～Fig. 5 C, can make R ditch (corresponding to the semicircle of Fig. 5 A), square ditch (corresponding to the quadrangle of Fig. 5 B) and V ditch (corresponding to the triangle of Fig. 5 C) on the die.
Fig. 6 is the schematic diagram of another LGP of the utility model preferred embodiment.Please refer to Fig. 6, this LGP 202 is similar with the LGP 200 of Fig. 2, and identical assembly indicates with identical symbol.It should be noted that LGP 202 can more comprise: light scattering pattern 240 is arranged on the strip projected parts thing 220.Can utilize radium-shine, sandblast or etching mode etc., on strip projected parts thing 220, form light scattering pattern 240.And, can adjust the distribution density of the light scattering pattern 240 of diverse location, for example, can make near the distribution density of the light scattering pattern 240 of light source S lower than distribution density away from the light scattering pattern 240 of light source S.More specifically, away from the position of light source S, the attenuation degree of light L is big more more.Use the adjustment mode of the distribution density of above-mentioned light scattering pattern 240, can obtain higher light scattering effect in position to increase the light L brightness of outgoing away from light source S place; And can obtain lower light scattering effect near the position of light source S, bright excessively with the light L that avoids outgoing.Generally speaking, LGP 202 can obtain more uniform surface light source.
Similarly, in order to obtain the Energy distribution of required area source, can adjust the connected mode or the height of strip projected parts thing according to the optical design demand.Fig. 7 A～Fig. 7 C is the schematic diagram of connected mode of three kinds of strip projected parts things of the utility model preferred embodiment.Please earlier with reference to Fig. 7 A, a plurality of strip projected parts things 220 can be each other and join continuously.Referring again to Fig. 7 B, a plurality of strip projected parts things 220 such as also can be at continuous joining, and wherein, the spacing between adjacent two strip projected parts things 220 is d1.Referring again to Fig. 7 C, a plurality of strip projected parts things 220 not can be yet and wait continuous joining, and wherein, the spacing between adjacent two strip projected parts things 220 can be d1, d2, d3.
Fig. 8 A～Fig. 8 C is the schematic diagram of height change mode of three kinds of strip projected parts things of the utility model preferred embodiment.In Fig. 8 A～Fig. 8 C, describe in continuous modes of joining such as strip projected parts thing 220 are.In fact, the connected mode of strip projected parts thing 220 or highly can make up according to the optical design demand.Please earlier with reference to Fig. 8 A, the height of a plurality of strip projected parts things 220 can be and is equal to each other, that is, highly be h1.Referring again to Fig. 8 B, the height of a plurality of strip projected parts things 220 also can be rule to be changed, and wherein, height h1, the h2 of strip projected parts thing 220, h3 for example can be linear change.Referring again to Fig. 8 C, the height of a plurality of strip projected parts things 220 also can be irregular variation, and wherein, height h1, the h2 of strip projected parts thing 220, h3 can be any variations.
Fig. 9 is the schematic diagram of a kind of backlight module of the utility model preferred embodiment.Please refer to Fig. 9, this backlight module 300 comprises: LGP 310 and light source S.LGP 310 can adopt above-mentioned LGP 200 or LGP 202.Detailed content about LGP 200 or LGP 202 is not repeated at this.In addition, light source S can adopt light emitting diode.Thus, even backlight module 300 uses spliced LGP 310, still can eliminate the bright line that splicing place G is produced, and uniform surface light source FL is provided.
In addition, the utility model also proposes a kind of light transmission method.In one embodiment, this light transmission method uses above-mentioned LGP 200 or 202.Detailed content about LGP 200,202 is not repeated at this.The characteristics of this light transmission method are: along the bearing of trend on second limit 214 of LGP 200, upper surface 200a and lower surface 200b at LGP 200 are provided with a plurality of strip projected parts things 220 on one of them at least, and light L can be transmitted in strip projected parts thing 220.Thus, the bright line that can eliminate when splicing a plurality of leaded lights zone 210 (can be considered the LGP of a plurality of small sizes), between adjacent two leaded light zones 210 of LGP 200,202, produces.
In sum, LGP of the present utility model and backlight module have the following advantages at least:
At LGP the strip projected parts thing is set, and the bearing of trend of strip projected parts thing is parallel with the transmission direction of light.So light can transmit in the strip projected parts thing, and can form uniform Energy distribution in LGP.Thus, can eliminate the obvious bright line of splicing place of a plurality of LGPs of splicing.Also can adopt proper optical design, the optical scattering pattern is set on the strip projected parts thing again according to demand; Perhaps, can change the spacing, height of strip projected parts thing etc., distribute to obtain needed area source.In addition, use the backlight module of above-mentioned LGP and light transmission method that uniform surface light source can be provided.
Though the utility model discloses as above with embodiment; right its is not in order to limit the utility model; have in the technical field under any and know the knowledgeable usually; in the spirit and scope that do not break away from the utility model; change and retouching when doing some, be as the criterion so the protection domain of the utility model is worked as the scope of looking accompanying Claim.
Claims (17)
1. LGP, have a upper surface and a lower surface, this LGP has a plurality of leaded lights zone, each leaded light zone has one first limit adjacent one another are and one second limit, be provided with a light source at place, this first limit and this light source provides a light to incide in this LGP, the transmission direction of this light is parallel with the bearing of trend on this second limit; It is characterized in that: this LGP also comprises: a plurality of strip projected parts things, along the bearing of trend on this second limit and be arranged on this upper surface of this LGP and this lower surface at least one of them; And this light can transmit in those strip projected parts things.
2. LGP according to claim 1 is characterized in that: more comprise: a light scattering pattern is arranged on those strip projected parts things.
3. LGP according to claim 2 is characterized in that: the distribution density ratio of this light scattering pattern of close this light source is low away from the distribution density of this light scattering pattern of this light source.
4. LGP according to claim 1 is characterized in that: the section shape of each strip projected parts thing comprises: semicircle, quadrangle or triangle.
5. LGP according to claim 1 is characterized in that: those strip projected parts things for join continuously each other, etc. continuously join or do not wait continuous joining.
6. LGP according to claim 1 is characterized in that: the height of those strip projected parts things for be equal to each other, rule changes or irregular variation.
7. LGP according to claim 1 is characterized in that: be provided with a groove between two adjacent leaded light zones.
8. LGP according to claim 1 is characterized in that: be provided with a section between two adjacent leaded light zones.
9. LGP according to claim 1 is characterized in that: those strip projected parts things are arranged on this upper surface and this lower surface simultaneously.
10. a backlight module comprises: a LGP, have a upper surface and a lower surface, and this LGP has a plurality of leaded lights zone, and each leaded light zone has one first limit adjacent one another are and one second limit; It is characterized in that: this LGP also comprises: a plurality of strip projected parts things, along the bearing of trend on this second limit and be arranged on this upper surface of this LGP and this lower surface at least one of them; And a light source, being arranged on this place, first limit, this light source provides a light to incide in this LGP, and the transmission direction of this light is parallel with the bearing of trend on this second limit, and this light can be transmitted in those strip projected parts things.
11. backlight module according to claim 10 is characterized in that: more comprise: a light scattering pattern is arranged on those strip projected parts things.
12. backlight module according to claim 10 is characterized in that: the section shape of each strip projected parts thing comprises: semicircle, quadrangle or triangle.
13. backlight module according to claim 10 is characterized in that: those strip projected parts things for join continuously each other, etc. continuously join or do not wait continuous joining.
14. backlight module according to claim 10 is characterized in that: the height of those strip projected parts things for be equal to each other, rule changes or irregular variation.
15. backlight module according to claim 10 is characterized in that: between two adjacent leaded light zones, be provided with a groove.
16. backlight module according to claim 10 is characterized in that: between two adjacent leaded light zones, be provided with a section.
17. backlight module according to claim 10 is characterized in that: those strip projected parts things are arranged on this upper surface and this lower surface simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201196045U CN201680293U (en) | 2010-02-26 | 2010-02-26 | Light guide plate and backlight module thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201196045U CN201680293U (en) | 2010-02-26 | 2010-02-26 | Light guide plate and backlight module thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201680293U true CN201680293U (en) | 2010-12-22 |
Family
ID=43345337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201196045U Expired - Fee Related CN201680293U (en) | 2010-02-26 | 2010-02-26 | Light guide plate and backlight module thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201680293U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101782218A (en) * | 2010-02-26 | 2010-07-21 | 上海向隆电子科技有限公司 | Light guide plate, backlight module and light transmission method |
-
2010
- 2010-02-26 CN CN2010201196045U patent/CN201680293U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101782218A (en) * | 2010-02-26 | 2010-07-21 | 上海向隆电子科技有限公司 | Light guide plate, backlight module and light transmission method |
| CN101782218B (en) * | 2010-02-26 | 2012-09-05 | 上海向隆电子科技有限公司 | Light guide plate, backlight module and light transmission method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101782218B (en) | Light guide plate, backlight module and light transmission method | |
| CN102767748B (en) | Front light module | |
| US8075174B2 (en) | Light guide plate microstructure | |
| US10132966B2 (en) | Optical element including strip-shaped prisms, light guide plate, prism, backlight module and display device | |
| CN102518988B (en) | Backlight module | |
| CN202676940U (en) | Light guide plate, lateral entering type backlight module, and liquid crystal display device | |
| CN102620193A (en) | Sectional light emitting diode (LED) backlight module and liquid crystal display device | |
| CN101418930B (en) | Area source device for LED | |
| CN102955195A (en) | Light guide plate, die, and die processing method | |
| CN105629541A (en) | Double-face display device | |
| CN201606740U (en) | LED side backlight module, LCD (liquid crystal display) device and LCD TV | |
| CN106896576A (en) | A kind of ultra-thin downward back photo structure | |
| CN101749601A (en) | Backlight module and display with same | |
| CN104747937A (en) | Light source module and display device | |
| CN101344682B (en) | Backlight module | |
| CN100451696C (en) | Light conducting board and backlight module using same | |
| CN101761829A (en) | Backlight module and display device using same | |
| CN102878525A (en) | Prism film, side-light type backlight module and liquid crystal display device | |
| CN201680293U (en) | Light guide plate and backlight module thereof | |
| CN102402056B (en) | Flat-plate display device and three-dimensional display device | |
| CN101842726B (en) | Light guide plate comprising prism with smooth top | |
| CN203349049U (en) | Light source module and keyboard with same | |
| CN103399371B (en) | Light guide plate, backlight module and liquid crystal indicator | |
| CN201621557U (en) | Parallel combined back-light plate used on displayer and displayer provided with same | |
| CN102374490B (en) | Backlight system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101222 Termination date: 20160226 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |