CN100492130C - Luminous diode and back light module unit - Google Patents
Luminous diode and back light module unit Download PDFInfo
- Publication number
- CN100492130C CN100492130C CNB2006100635310A CN200610063531A CN100492130C CN 100492130 C CN100492130 C CN 100492130C CN B2006100635310 A CNB2006100635310 A CN B2006100635310A CN 200610063531 A CN200610063531 A CN 200610063531A CN 100492130 C CN100492130 C CN 100492130C
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- emitting diode
- emission side
- light emitting
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Abstract
The invention relates to an LBD and a BLU adopting the LBD. The LBD comprises a packaging body and a light outlet part, and the packaging body comprises an illuminant side and a bottom surface which is vertically connected to the illuminant side. The light outlet part is arranged on the illuminant side and comprises a light outlet surface parallel to the illuminant side, and the side length of the side of the light outlet surface vertical to the bottom surface is smaller than that of the side of the illuminant side vertical to the bottom surface. The LBD can be used by being matched with a thin plateau form light guide plate.
Description
Technical field
The invention relates to the module backlight of a kind of light emitting diode and this light emitting diode of employing.
Background technology
Liquid crystal indicator because of have low diathermaneity, characteristics such as volume is compact and power consumption is low, be widely used in fields such as mobile phone, personal digital assistant, notebook computer, PC and TV.Because the liquid crystal itself in the display panels is not had a characteristics of luminescence, therefore for reaching display effect, needing provides a planar light source device to realize Presentation Function to display panels, and as module backlight, its function is to provide the area source that brightness is abundant and be evenly distributed for display panels.Along with the demand of market to the liquid crystal indicator slimming, module backlight needs to develop to the slimming direction, so also require more and more thinner as the light guide plate of its main element.
Please refer to Fig. 1, it is the structural representation of a kind of prior art module backlight.This module 1 backlight comprises a light emitting diode 10 and a light guide plate 12, this light guide plate 12 comprises a wedge-like portion 120 and a thin flat part 123 that is connected with these wedge type part 120 thin ends, a thicker end of this wedge-like portion 120 comprises an incidence surface 121, constitutes the exiting surface 122 of this light guide plate 12 with the upper surface and the upper surface of this thin flat part 123 of these incidence surface 121 these wedge-like portion 120 connected vertically.This light emitting diode 10 is arranged on this incidence surface 121 1 sides, and it highly equals the thickness of these wedge-like portion 120 thicker ends, and so the light that sends from this light emitting diode 10 can fully be utilized by this light guide plate 12.
The light that sends from this light emitting diode 10 enters these light guide plate 12 backs via this incidence surface 121 and evenly penetrates from exiting surfaces 122 of this light guide plate 12, for the display panels that adopts this module 1 backlight provides the area source that brightness is abundant and be evenly distributed.And the wedge-like portion 120 of this light guide plate 12 combines with thin flat part 123, has satisfied the slimming requirement of module 1 backlight to a certain extent.
Generally speaking, if these light guide plate 12 integral body are flat structures, then its slimming ratio is easier to, yet, encapsulated the restriction of condition because of the light emitting diode 10 that cooperates with it, realize that complete slimming still has certain difficulty, change so can only on this light guide plate 12, make wedge shape, to realize the whole slimming of module 1 backlight as far as possible.
Summary of the invention
Need make the problem that wedge shape changes in order to overcome thin light guide panel in the prior art for cooperating light emitting diode, be necessary to provide a kind of light emitting diode that cooperates thin flat type light guide plate to use.
Also be necessary to provide a kind of module backlight that adopts above-mentioned light emitting diode.
A kind of light emitting diode, it comprises an encapsulation main body and a light out part, this encapsulation main body comprise a light emission side and with this light emission side bottom surface connected vertically, this light out part is arranged at this light emission side, this light out part comprises an exiting surface parallel with this light emission side, this exiting surface perpendicular to the length of side on the limit of this bottom surface less than the length of side of this light emission side perpendicular to the limit of this bottom surface.
A kind of module backlight, it comprises a light guide plate and at least one light emitting diode.This light guide plate comprises at least one incidence surface, this light emitting diode is arranged on this incidence surface one side, this light emitting diode comprises an encapsulation main body and a light out part, the thickness of this encapsulation main body is greater than the thickness of this light guide plate, it comprises a light emission side, this light out part is arranged at this light emission side, and this light out part comprises an exiting surface parallel with this light emission side, and the length of side of the corresponding sides of this exiting surface is less than the thickness of this encapsulation main body.
Compared to prior art, this light emitting diode issued light line penetrates via the light emission side of encapsulation main body, again via the exiting surface outgoing of light out part and offer light guide plate, make its exiting surface paste the incidence surface of neat this light guide plate, the thin flat type structure that directly cooperates this light guide plate, make from the light of this exiting surface outgoing and fully utilized, need not light guide plate and remake the wedge shape variation, satisfy the demand that cooperates thin flat type light guide plate by this light guide plate.And this module backlight adopts this light emitting diode and light guide plate to be used can conveniently realize its whole slimming.
Description of drawings
Fig. 1 is the structural representation of a kind of prior art module backlight.
Fig. 2 is the structural representation of the present invention's module better embodiment backlight.
Fig. 3 is a light-emitting diode structure synoptic diagram among Fig. 2.
Fig. 4 is a distressed structure synoptic diagram of light emitting diode of the present invention.
Fig. 5 is another distressed structure synoptic diagram of light emitting diode of the present invention.
Fig. 6 is the another distressed structure synoptic diagram of light emitting diode of the present invention.
Embodiment
Please refer to Fig. 2, it is the structural representation of the present invention's module better embodiment backlight.This module 2 backlight comprises a light guide plate 22 and a light emitting diode 20.This light guide plate 22 is slimming flat structures, and it comprises an incidence surface 220 and an exiting surface 221 that is connected with this incidence surface 220, and this light emitting diode 20 is arranged on incidence surface 220 1 sides of this light guide plate 22.
Please in the lump with reference to figure 3, it is the structural representation of this light emitting diode 20.This light emitting diode 20 comprises an encapsulation main body 200 and a light out part 210.This encapsulation main body 200 is rectangular structure, and its inside comprises at least one crystal grain (figure does not show), seals this crystal grain by light transmissive material with filling mode, and the thickness of this encapsulation main body 200 is greater than the thickness of this light guide plate 22.This encapsulation main body 200 comprise an end face 203, one and this end face 203 opposed bottom surface 201, one and this end face 203 and bottom surface 201 light emission side 202 connected vertically and other three with this end face 203 and 201 sides 204 connected vertically, bottom surface, wherein, two side faces 204 and this light emission side 202 and these 201 vertical connections of bottom surface, a side 204 and this light emission side 202 relative and with these 201 vertical connections of bottom surface.This light emission side 202 is rectangles, and it comprises the two relative long limit minor faces relative with two, and this bottom surface 201 is to be connected with a long limit of this light emission side 202.This light out part 210 is wedge structures, it is arranged at this light emission side 202, this light out part 210 comprises an exiting surface 211 parallel with this light emission side 202, four joint faces 213 that are connected with this exiting surface 211 with this light emission side 202 respectively, this exiting surface 211 is relative with the incidence surface 220 of this light guide plate 22.
This exiting surface 211 is rectangles, it comprises the two relative long limit minor faces relative with two, and this four limit is parallel with four limits of this light emission side 202 respectively, the length of side of these exiting surface 211 minor faces is less than the thickness of this encapsulation main body 200 and equal the thickness of this light guide plate 22, and these exiting surface 211 long limits are less than the length of side on the long limit of this light emission side 202.This exiting surface 211 and the same central shaft of these light emission side 202 tools, its area is less than the area of this light emission side 202.Be coated with one deck reflecting material on the inside surface of this four joint face 213 with further raising light utilization efficiency.
Exiting surface 211 direct outgoing from the light part of light emission side 202 emission of this light emitting diode 20 from this light out part 210, a part is after the inside surface reflection of this four joint face 213, with the emergence angle of maximum from these exiting surface 211 outgoing, enter these light guide plate 22 backs by the incidence surface 220 of this light guide plate 22 then and evenly penetrates, for the display panels that adopts this module 2 backlight provides the area source that brightness is abundant and be evenly distributed from exiting surfaces 221 of this light guide plate 22.
The light out part 210 of this light emitting diode 20 is along the direction thinning gradually away from this encapsulation main body 200, make its exiting surface 211 directly paste the incidence surface 220 of neat this light guide plate 22, the thin flat type structure that cooperates this light guide plate 22, make from the light of exiting surface 211 outgoing of this light out part 210 and fully utilized by this light guide plate 22, need not light guide plate 22 and remake the wedge shape variation, satisfy the demand that cooperates thin flat type light guide plate 22.
In addition, the light guide plate 22 of this module 2 backlight is not limited to only have an incidence surface 220, and the light emitting diode 20 that is arranged on these incidence surface 220 1 sides also is not limited to one.Also oval or other shape of the exiting surface 211 of this light out part 210 perhaps forms rectangle, ellipse, circle or other shaped aperture on this exiting surface 211, make light only from this opening outgoing.
Please refer to Fig. 4, it is a distressed structure synoptic diagram of light emitting diode of the present invention.This light emitting diode 30 is with the difference of light emitting diode 20: a joint face that is connected with bottom surface 301 313 of the light out part 310 of this light emitting diode 30 is positioned at same plane with this bottom surface 301.
Please refer to Fig. 5, it is another distressed structure synoptic diagram of light emitting diode of the present invention.This light emitting diode 40 is with the difference of light emitting diode 20: the length of side on the exiting surface 411 long limits of the light out part 410 of this light emitting diode 40 equals the length of side on these light emission side 402 long limits.Two joint faces 413 at these exiting surface 411 minor face places lay respectively at same plane with the two relative side 404 of encapsulation main body 400.
Please refer to Fig. 6, it is the another distressed structure synoptic diagram of light emitting diode of the present invention.This light emitting diode 50 is with the difference of light emitting diode 40: a joint face that is connected with bottom surface 501 513 of the light out part 510 of this light emitting diode 50 also is positioned at same plane with this bottom surface 501.
Claims (10)
1. light emitting diode, it is characterized in that: it comprises an encapsulation main body and a light out part, this encapsulation main body comprise a light emission side and with this light emission side bottom surface connected vertically, this light out part is arranged at this light emission side, this light out part comprises an exiting surface parallel with this light emission side, this exiting surface perpendicular to the length of side on the limit of this bottom surface less than the length of side of this light emission side perpendicular to the limit of this bottom surface.
2. light emitting diode as claimed in claim 1 is characterized in that: this encapsulation main body is a rectangular structure, and its inside comprises at least one crystal grain and the light transmissive material that encapsulates this crystal grain, and this light out part is a wedge structure.
3. light emitting diode as claimed in claim 1 is characterized in that: this light out part further comprises four joint faces that are connected with this exiting surface with this light emission side respectively, and the area of this exiting surface is less than the area of this light emission side.
4. light emitting diode as claimed in claim 3 is characterized in that: this light emission side is a rectangle, and it comprises that two grow the relative minor face with two in limit relatively, and this two minor face is perpendicular to this bottom surface; This exiting surface is a rectangle, and it comprises that two grow the relative minor face with two in limit relatively, and this two minor face is perpendicular to this bottom surface; This encapsulation main body further comprises and this light emission side and two sides connected vertically, this bottom surface.
5. light emitting diode as claimed in claim 4 is characterized in that: the length of side on these exiting surface four limits is respectively less than the length of side, this exiting surface and the same central shaft of this emission side mask on these light emission side four limits.
6. light emitting diode as claimed in claim 4 is characterized in that: a joint face and this bottom surface of this light out part are positioned at same plane.
7. light emitting diode as claimed in claim 4 is characterized in that: the two relative joint faces of this exiting surface and the two relative side of this encapsulation main body lay respectively at same plane.
8. light emitting diode as claimed in claim 7 is characterized in that: another joint face and this bottom surface of this light out part are positioned at same plane.
9. module backlight, it comprises a light guide plate and at least one light emitting diode, this light guide plate comprises at least one incidence surface, this light emitting diode is arranged on this incidence surface one side, this light emitting diode comprises an encapsulation main body and a light out part, the thickness of this encapsulation main body is greater than the thickness of this light guide plate, this encapsulation main body comprises a light emission side, this light out part is arranged at this light emission side, this light out part comprises an exiting surface parallel with this light emission side, and the length of side on the limit parallel with thickness direction this encapsulation main body this exiting surface is less than the thickness of this encapsulation main body.
10. module backlight as claimed in claim 9 is characterized in that: this light guide plate is a flat structure, and the length of side on the limit parallel with thickness direction this light guide plate this exiting surface equals the thickness of this light guide plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100635310A CN100492130C (en) | 2006-11-08 | 2006-11-08 | Luminous diode and back light module unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100635310A CN100492130C (en) | 2006-11-08 | 2006-11-08 | Luminous diode and back light module unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101178509A CN101178509A (en) | 2008-05-14 |
| CN100492130C true CN100492130C (en) | 2009-05-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100635310A Expired - Fee Related CN100492130C (en) | 2006-11-08 | 2006-11-08 | Luminous diode and back light module unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100492130C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104965255A (en) * | 2015-07-27 | 2015-10-07 | 京东方光科技有限公司 | Light source guide-in part, light guide plate, backlight module group, and display device |
| CN108983345A (en) * | 2018-07-18 | 2018-12-11 | 惠州市华星光电技术有限公司 | Backlight module and its leaded light device |
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2006
- 2006-11-08 CN CNB2006100635310A patent/CN100492130C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101178509A (en) | 2008-05-14 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090527 Termination date: 20191108 |