CN104459870A - Novel light guide plate - Google Patents
Novel light guide plate Download PDFInfo
- Publication number
- CN104459870A CN104459870A CN201410644835.0A CN201410644835A CN104459870A CN 104459870 A CN104459870 A CN 104459870A CN 201410644835 A CN201410644835 A CN 201410644835A CN 104459870 A CN104459870 A CN 104459870A
- Authority
- CN
- China
- Prior art keywords
- light
- guide plate
- light guide
- groove
- rear end
- 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
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/0038—Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of the light guide
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2101/00—Point-like light sources
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention relates to a backlight source light guide plate, in particular to a novel light guide plate. The novel light guide plate comprises a light emergent surface and a light reflecting surface arranged oppositely, and a common end of the light emergent surface and the light reflecting surface is a light incident surface where light of a light source is emitted to the light guide plate; the end surface opposite to the light incident surface is the rear end surface; a plurality of grooves are formed in the light emergent surface and throughout from the light incident surface to the rear end surface, and all the grooves are arranged in parallel; the depth of the grooves at the light incident surface is smallest, the depth of the grooves at the rear end surface is largest, and the bottom of each groove is a slop getting deep from the light incident surface to the rear end surface. The novel light guide plate can improve the uniformity of outlet light of a weak light source after the light is guided by the light guide plate, and the light will be emitted in a dispersed mode gradually after entering the light guide plate instead of concentrating at the front end of the light guide plate to be emitted, so that the outlet light brightness near the rear end of the light guide plate is basically consistent with that near the front end. The novel light guide plate is particularly suitable for guiding the light of an LED primary color lamp and an OLED with low penetrating capacity.
Description
Technical field
The present invention relates to light guide plate, espespecially a kind of new-type light guide plate.Be applicable to carry out leaded light to dyssophotic light source (as wearing the more weak LED primary colored lamps of the power of penetrating and OLED).
Background technology
The pointolite that light guide plate bears just light emitting diode (being called for short LED) changes into the function of the area source of uniform in light emission, and the optical property impact of the product confrontation backlight of light guide plate is very large.
Light guide plate is generally different thin slice.The face of thin slice surrounding is called side, and two relative in addition faces are respectively exiting surface and reflective surface.LED is equipped with side patch form and light guide sheet, and the light of LED injects light guide plate from this side of light guide plate, and this side is called incidence surface.Other side of light guide plate is non-incidence surface.
The light that LED light source sends is advanced in light guide plate with arbitrary angle and direction after incidence surface enters light guide plate, penetrate from exiting surface to allow light, the general optics that is shaped with on light guide plate exiting surface spreads site or groove, the direct of travel of light is directed to the exiting surface injection of light guide plate, thus LED point light source is become the area source as backlight by realization.
At present, groove light guide plate exiting surface made has various ways:
Through groove, groove is linearly, and penetrate into the side relative with light inlet side from light guide plate light inlet side, the degree of depth of groove does not change.
Discontinuous groove, in being interrupted shape on trench length direction, one section of one section of forward permutations, the degree of depth of groove does not change.
Only be shaped with groove in light guide plate near light inlet side (i.e. forward end), in such cases, the degree of depth of groove changes, but its change in depth is only confined to tail end.
For the LED primary colored lamps that penetration power is weak, also have OLED, its particle is little, and luminescence is more weak.The LED primary colored lamps that this penetration power is weak and OLED, also different with oarse-grained LED use-pattern, the single installation of oarse-grained LED, at regular intervals to each other, and the LED primary colored lamps close installation in a row that penetration power is weak.When the LED primary colored lamps that penetration power is weak and OLED and existing light guide plate are equipped with (being arranged on the incident side of light guide plate), the phasic difference of end rearward near the emitting brightness at light guide plate incident side one end (i.e. the front end of light guide plate) position and light guide plate is very large, very weak in position, the end rearward emitting brightness of light guide plate, therefore the light guide plate of prior art is not suitable for the weak LED primary colored lamps of penetration power and OLED.
Summary of the invention
The technical issues that need to address of the present invention are, the light guide plate overcoming prior art is not suitable for the deficiency of the weak LED primary colored lamps of penetration power and OLED, provides a kind of new-type light guide plate.The light of the LED primary colored lamps that penetration power is weak and OLED injection is after this light guide plate is transmitted, and it is the emitting brightness of position, end and forward end positions are conformed to each other rearward.
A kind of new-type light guide plate of the present invention adopts following technical proposals:
A kind of new-type light guide plate, comprises the exiting surface and reflective surface that are oppositely arranged, and a wherein common end of exiting surface and reflective surface is the incidence surface of light to light guide plate of light source; The end face relative with incidence surface is rear end face; Exiting surface is shaped with numerous groove, and each bar groove is from incidence surface through to rear end face, and whole groove is arranged in parallel; The described gash depth at incidence surface place is minimum, and at rear end face place, gash depth is maximum, and described channel bottom is the slope from shallow to dark from incidence surface to rear end face.
Technique scheme is further elaborated:
The degree of depth of the groove at described incidence surface place is less than 1 micron, and the degree of depth of the groove at described rear end face place is 8 ~ 12 microns.
Described groove is arc-shaped in bottom, end in the rear, and the radius-of-curvature of described channel bottom minimum point is 13 ~ 16 microns.
Compared with the existing technology, the invention has the beneficial effects as follows:
One, can improve the homogeneity of weak light source bright dipping after light guide plate leaded light.The luminous energy of weak light source is more weak, if light guide plate front end groove is comparatively dark, the luminous energy of weak light source by major part after entering light guide plate front end not distant site just penetrated from exiting surface by dispersion, light guide plate rearward position, end nature emitting brightness just greatly reduces.Light guide plate of the present invention due to the degree of depth at described groove incidence surface place minimum, at rear end face place, gash depth is maximum, the bottom of described groove is the slope from shallow to dark from incidence surface to rear end face, like this, light progressively can disperse bright dipping after entering light guide plate, be not concentrated near the position bright dipping of light guide plate front end, cause near position, light guide plate rear end emitting brightness with basically identical near position, front end.
Its two, the present invention is particularly useful for wearing the more weak LED primary colored lamps of the power of penetrating and OLED carries out leaded light.
Accompanying drawing explanation
Fig. 1 is light guide plate schematic perspective view of the present invention;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is channel bottom (in Fig. 2 B-B) schematic diagram (angle of inclination of bottom is exaggerated);
Fig. 4 is trench cross-section (in Fig. 2 A-A) schematic diagram;
Fig. 5 is I place enlarged diagram in Fig. 4.
In figure: 10, a kind of new-type light guide plate; 11, exiting surface; 12, reflective surface; 13, incidence surface; 14, rear end face; 15, groove; 16, the bottom of groove; The degree of depth of H, groove; 20, light source.
Embodiment
The specific embodiment of the present invention is introduced below in conjunction with accompanying drawing.
Embodiment one
A kind of new-type light guide plate 10, comprises the exiting surface 11 and reflective surface 12 that are oppositely arranged, and a wherein common end of exiting surface 11 and reflective surface 12 is the incidence surface 13 of light to light guide plate 10 of light source 20; The end face relative with incidence surface 13 is rear end face 14; Exiting surface 11 is shaped with numerous groove 15, and each bar groove 15 is from incidence surface 13 through to rear end face 14, and whole groove 15 is arranged in parallel; Described groove 15 depth H at incidence surface 13 place is minimum, and at rear end face 14 place, groove 15 depth H is maximum, and the bottom 16 of described groove is the slope from shallow to dark from incidence surface 13 to rear end face 14.Strict says, the bottom 16 of the groove shown in Fig. 3 is the minimum point of the bottom of groove.
The depth H of the groove 15 at described incidence surface 13 place is less than 1 micron, and the depth H of the groove at described rear end face 14 place is 8 microns.
Described groove 15 is arc-shaped in bottom, in the rear end face 14 place, and the radius-of-curvature of bottom 16 minimum point of groove is 13 microns.
Embodiment two
A kind of new-type light guide plate 10, comprises the exiting surface 11 and reflective surface 12 that are oppositely arranged, and a wherein common end of exiting surface 11 and reflective surface 12 is the incidence surface 13 of light to light guide plate 10 of light source 20; The end face relative with incidence surface 13 is rear end face 14; Exiting surface 11 is shaped with numerous groove 15, and each bar groove 15 is from incidence surface 13 through to rear end face 14, and whole groove 15 is arranged in parallel; Described groove 15 depth H at incidence surface 13 place is minimum, and at rear end face 14 place, groove 15 depth H is maximum, and the bottom 16 of described groove is the slope from shallow to dark from incidence surface 13 to rear end face 14.Strict says, the bottom 16 of the groove shown in Fig. 3 is the minimum point of the bottom of groove.
The depth H of the groove 15 at described incidence surface 13 place is less than 1 micron, and the depth H of the groove at described rear end face 14 place is 9 microns.
Described groove 15 is arc-shaped in bottom, in the rear end face 14 place, and the radius-of-curvature of bottom 16 minimum point of groove is 15 microns.
Embodiment three
A kind of new-type light guide plate 10, comprises the exiting surface 11 and reflective surface 12 that are oppositely arranged, and a wherein common end of exiting surface 11 and reflective surface 12 is the incidence surface 13 of light to light guide plate 10 of light source 20; The end face relative with incidence surface 13 is rear end face 14; Exiting surface 11 is shaped with numerous groove 15, and each bar groove 15 is from incidence surface 13 through to rear end face 14, and whole groove 15 is arranged in parallel; Described groove 15 depth H at incidence surface 13 place is minimum, and at rear end face 14 place, groove 15 depth H is maximum, and the bottom 16 of described groove is the slope from shallow to dark from incidence surface 13 to rear end face 14.Strict says, the bottom 16 of the groove shown in Fig. 3 is the minimum point of the bottom of groove.
The depth H of the groove 15 at described incidence surface 13 place is less than 1 micron, and the depth H of the groove at described rear end face 14 place is 12 microns.
Described groove 15 is arc-shaped in bottom, in the rear end face 14 place, and the radius-of-curvature of bottom 16 minimum point of groove is 16 microns.
Embodiments of the invention just illustrate its embodiment, do not lie in and limit its technical scheme.The technician of the industry can make some amendment under the inspiration of the present embodiment, therefore all equivalences done according to the scope of the claims of the present invention change or modify, and all belong within the scope of Patent right requirement of the present invention.
Claims (3)
1. a new-type light guide plate, comprises the exiting surface (11) and reflective surface (12) that are oppositely arranged, and a wherein common end of exiting surface (11) and reflective surface (12) is the incidence surface (13) of light to guide-lighting (10) of light source (20); The end face relative with incidence surface (13) is rear end face (14); Exiting surface (11) is shaped with numerous groove (15), and each bar groove (15) is from incidence surface (13) through to rear end face (14), and whole groove (15) is arranged in parallel; It is characterized in that: described groove (15) degree of depth (H) at incidence surface (13) place is minimum, and at rear end face (14) place, groove (15) depth H is maximum, the bottom (16) of described groove is the slope from shallow to dark from incidence surface (13) to rear end face (14).
2. the new-type light guide plate of one according to claim 1, it is characterized in that: the degree of depth (H) of the groove (15) at described incidence surface (13) place is less than 1 micron, the degree of depth (H) of the groove (15) at described rear end face (14) place is 8 ~ 12 microns.
3. the new-type light guide plate of one according to claim 1, it is characterized in that: described groove (15) is arc-shaped in bottom, end face (14) place in the rear, the radius-of-curvature of bottom (16) minimum point of groove is 13 ~ 16 microns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410644835.0A CN104459870A (en) | 2014-11-14 | 2014-11-14 | Novel light guide plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410644835.0A CN104459870A (en) | 2014-11-14 | 2014-11-14 | Novel light guide plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104459870A true CN104459870A (en) | 2015-03-25 |
Family
ID=52906205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410644835.0A Pending CN104459870A (en) | 2014-11-14 | 2014-11-14 | Novel light guide plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104459870A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107462946A (en) * | 2016-06-03 | 2017-12-12 | 苏州茂立光电科技有限公司 | Tool height enters the light guide plate and manufacture method and ditch grooved roller of light exhibition angle and uniform light extraction |
| CN110726097A (en) * | 2019-10-23 | 2020-01-24 | 派洛奇科技（广东）有限公司 | Lighting ceiling and lighting device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080036945A1 (en) * | 2006-08-11 | 2008-02-14 | Hon Hai Precision Industry Co., Ltd. | Polarizer and liquid crystal display employing same |
| KR20090014810A (en) * | 2007-08-07 | 2009-02-11 | (주)비젼텍 | Pattern-graved light guide plate of back light unit |
| JP2011522369A (en) * | 2008-05-30 | 2011-07-28 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | LIGHTING DEVICE WITH LIGHT GUIDE |
| CN203909331U (en) * | 2014-05-14 | 2014-10-29 | 京东方科技集团股份有限公司 | Light guide plate, backlight module and display device |
| CN204215063U (en) * | 2014-11-14 | 2015-03-18 | 东莞市现代精工实业有限公司 | A kind of new-type light guide plate |
-
2014
- 2014-11-14 CN CN201410644835.0A patent/CN104459870A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080036945A1 (en) * | 2006-08-11 | 2008-02-14 | Hon Hai Precision Industry Co., Ltd. | Polarizer and liquid crystal display employing same |
| KR20090014810A (en) * | 2007-08-07 | 2009-02-11 | (주)비젼텍 | Pattern-graved light guide plate of back light unit |
| JP2011522369A (en) * | 2008-05-30 | 2011-07-28 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | LIGHTING DEVICE WITH LIGHT GUIDE |
| CN203909331U (en) * | 2014-05-14 | 2014-10-29 | 京东方科技集团股份有限公司 | Light guide plate, backlight module and display device |
| CN204215063U (en) * | 2014-11-14 | 2015-03-18 | 东莞市现代精工实业有限公司 | A kind of new-type light guide plate |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107462946A (en) * | 2016-06-03 | 2017-12-12 | 苏州茂立光电科技有限公司 | Tool height enters the light guide plate and manufacture method and ditch grooved roller of light exhibition angle and uniform light extraction |
| CN107462946B (en) * | 2016-06-03 | 2019-12-13 | 苏州茂立光电科技有限公司 | Light guide plate with high incident light spread angle and uniform light emission, manufacturing method and groove roller |
| CN110726097A (en) * | 2019-10-23 | 2020-01-24 | 派洛奇科技（广东）有限公司 | Lighting ceiling and lighting device |
| CN110726097B (en) * | 2019-10-23 | 2022-01-18 | 派洛奇科技（广东）有限公司 | Lighting ceiling and lighting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150325 |