CN105372750A - Light guide plate by adopting PS material and with light-out surface in large dot structure - Google Patents
Light guide plate by adopting PS material and with light-out surface in large dot structure Download PDFInfo
- Publication number
- CN105372750A CN105372750A CN201510779240.0A CN201510779240A CN105372750A CN 105372750 A CN105372750 A CN 105372750A CN 201510779240 A CN201510779240 A CN 201510779240A CN 105372750 A CN105372750 A CN 105372750A
- Authority
- CN
- China
- Prior art keywords
- light
- guide plate
- light guide
- hemisphere jut
- passing board
- 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
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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
- G02B6/0036—2-D arrangement of prisms, protrusions, indentations or roughened surfaces
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
Abstract
The invention discloses a light guide plate by adopting a PS material and with a light-out surface in a large dot structure. The light guide plate comprises a light transmission plate; the light transmission plate is provided with a light-in surface for guiding light beams in the light transmission plate, a light-out surface for guiding the light beams out of the light transmission plate, and a bottom surface opposite to the light-out surface; the light transmission plate adopts the PS material; the light-out surface of the light transmission plate is provided with multiple spherical bulges integrated with the light transmission plate; each spherical bulge has a diameter of 0.890 to 0.925mm and a height of 0.415 to 0.460mm; the spherical bulges are uniformly distributed in a row-column shape; and the distance between two adjacent spherical bulges is 0.375 to 0.395mm. Parameters, such as the diameter, the height and the distance, of each spherical bulge are optimized according to a different light guide plate material, the light passing rate and scattering effects of the light guide plate are improved, brightness of an area light source of the light guide plate is ensured, and the overall optical performance of a backlight system is thus improved.
Description
Technical field
The invention belongs to back light system technical field, particularly relate to a kind of light guide plate of back light system.
Background technology
Because the liquid crystal of liquid crystal display itself does not have the characteristics of luminescence, thus, for reaching display effect, a planar light source device need be provided to panel of LCD, as back light system, its role is to panel of LCD supply briliancy fully and the area source be evenly distributed.
The back light system of prior art forms primarily of light source, light guide plate, reflecting plate, diffuser plate and prism plate, this light source can be arranged on light guide plate side or two opposite sides and by light emission to this light guide plate, the effect of this light guide plate is to guide light transmission direction, makes light from the exiting surface uniform of light guide plate; The bottom surface of reflecting plate this light guide plate relative is arranged, and to be again reflected in this light guide plate by the light from bottom surface of light guide plate outgoing, improves the utilization factor of light; The exiting surface of diffuser plate light guide plate relative to prism plate sets gradually, more even to make from the distribution of light of light guide plate outgoing, and then improves briliancy and the homogeneity of panel of LCD.
In back light system, the effect of diffuser plate is to make the abundant scattering of the light beam of outgoing and reaching the homogenising of briliancy, but, in back light system, diffuser plate is set, material cost is high, and assembling process is complicated, expends man-hour and human cost, and between light guide plate and diffuser plate, there is transmission interface, a certain amount of light loss can be caused in this transmission interface, causes briliancy to reduce, and affects the overall optical property of back light system.In order to head it off, occur that one has diffusing light guiding plate at present, the exiting surface of light guide plate is provided with multiple hemisphere jut, by the arc-shaped curved surface of hemisphere jut, scattering is carried out to the light beam that exiting surface sends, to reach the object reducing back light system assembly cost and reduce light loss, but the deficiency that this light guide plate exists is: the diameter of hemisphere jut, the parameters such as height and spacing can directly affect the light percent of pass of light guide plate and the dispersion effect to light beam, but the light guide plate occurred at present is not optimized correlation parameter, therefore light percent of pass and dispersion effect poor.
Summary of the invention
The object of the invention is to solve the light percent of pass of light guide plate in prior art and the poor technical matters of dispersion effect, a kind of light percent of pass and the good light guide plate of dispersion effect are provided.
The technical scheme that technical solution problem of the present invention adopts is: provide a kind of light guide plate, comprise light-passing board, described light-passing board has the incidence surface imported by light beam in light-passing board, the exiting surface that light beam is derived in light-passing board and the bottom surface relative with exiting surface, described light-passing board adopts PS material, the exiting surface of described light-passing board is provided with multiple hemisphere jut integrated with light-passing board, the diameter of hemisphere jut is 0.890-0.925mm, the height of hemisphere jut is 0.415-0.460mm, described hemisphere jut is that ranks shape is uniformly distributed, spacing between adjacent two hemisphere juts is 0.375-0.395mm.
Hinge structure, light guide plate of the present invention, there is following beneficial effect: the exiting surface of light-passing board has multiple hemisphere jut, the arc-shaped curved surface of the plurality of hemisphere jut can carry out scattering to the light beam of certain ranges of incidence angles, make light guide plate itself have diffusion function, save the cost of required diffuser plate during assembling back light system; Hemisphere jut and light-passing board adopt same material simultaneously, and one-body molded, and therefore there is not light between hemisphere jut and light-passing board and transmit interface, light loss reduces; In addition, the present invention is optimized the diameter of hemisphere jut, the parameter such as height and spacing according to the difference of light guide plate material, improve light percent of pass and the dispersion effect of light guide plate, ensure that light guide plate sends the light source briliancy of area source, thus improve the overall optical property of back light system.
Accompanying drawing explanation
Fig. 1 is shown as the side view of light guide plate of the present invention.
Fig. 2 is shown as the distribution schematic diagram of light guide plate hemisphere jut of the present invention.
Fig. 3 is shown as light guide plate beam exit index path of the present invention.
Element numbers explanation
10-light-passing board; 11-incidence surface; 12-exiting surface; 13-bottom surface; 20-hemisphere jut.
Embodiment
By particular specific embodiment, embodiments of the present invention are described below, person skilled in the art scholar the content disclosed by this instructions can understand other advantages of the present invention and effect easily.
embodiment 1
As depicted in figs. 1 and 2, light guide plate of the present invention comprises light-passing board 10, and the shape of light-passing board 10 is plate shaped, and its material is transparent synthetic resin or glass.Light-passing board 10 comprises incidence surface 11, exiting surface 12 and bottom surface 13, wherein, incidence surface 11 is for the light beam that receives light source (not shown in FIG.) and send and imported in light-passing board 10, the light beam of incidence is derived light-passing board 10 by exiting surface 12, bottom surface 13 is minute surface, and bottom surface 13 and exiting surface 12 are oppositely arranged.
Exiting surface 11 is provided with multiple hemisphere jut 20, multiple hemisphere jut 20 is uniformly distributed on exiting surface 11 in ranks shape, and size is consistent.The material of light-passing board 10 adopts PS(Polystyrene, polystyrene), the material of hemisphere jut 20 also adopts PS, and light-passing board 10 is one-body molded with hemisphere jut 20, there is not light between such light-passing board 10 and hemisphere jut 20 and transmit interface, light loss reduces.The shape of hemisphere jut 20 is semisphere or Part-spherical (Part-spherical refers to the sphere structure that interface radian is less than 180 °).
The diameter of hemisphere jut 20 and height dimension should be moderate, cross the thickness that conference increases light guide plate, affect light percent of pass, too smallly can affect the dispersion effect of light guide plate to light beam, find through actual test, during light guide plate employing PS material, the diameter of hemisphere jut 20 is advisable at 0.890-0.925mm, and the height of hemisphere jut 20 is advisable at 0.415-0.460mm; Spacing between hemisphere jut 20 should be moderate, spacing is crossed conference and the quantity of hemisphere jut is reduced, affect the dispersion effect of light guide plate to light beam, the too small meeting of spacing makes to occur between light beam mutually to interfere, find through actual test, during light guide plate employing PS material, if hemisphere jut 20 distribution in ranks shape, the spacing between two adjacent hemisphere juts of colleague or same column is advisable at 0.375-0.395mm.
In the present embodiment, hemisphere jut 20 is Part-spherical, and the diameter of hemisphere jut 20 is 0.890mm, and the height of hemisphere jut 20 is 0.415mm, and the spacing between two adjacent hemisphere juts of colleague or same column is 0.375mm.
As shown in Figure 3, when the exiting surface 12 as light-passing board 10 does not arrange hemisphere jut, incident with a angle relative to the exiting surface of light-passing board 10 by the light beam 30 of bottom surface 13 scattering and reflection, when a angle is less than the angle of total reflection, this light beam 30 through exiting surface 12 with the outgoing of b angle.The present embodiment arranges hemisphere jut 20 at the exiting surface of light-passing board 10, then this light beam 30 is after the arc-shaped curved surface total reflection of hemisphere jut 20, and opposing arcuate curved surface is incident with c angle again, when c angle is less than the angle of total reflection, light beam 30 through arc-shaped curved surface with the outgoing of d angle.This light beam 30 is n(n>1 by refractive index) high refractive index medium light guide plate enters the air dielectric that refractive index is 1, formula is: n=sini/sinr, wherein, n is the refractive index of high refractive index medium, n>1, i is emergence angle, r is incident angle, known, light beam 30 be greater than with the angle of perpendicular line after arc-shaped curved surface outgoing light beam 30 after exiting surface outgoing with the angle of perpendicular line, namely the exiting surface of the relative light-passing board 10 of the arc-shaped curved surface of hemisphere jut 20 has astigmatism functions within the scope of certain angle, this ranges of incidence angles depends on the factor such as the refractive index of PS material and the radian of arc-shaped curved surface.Meanwhile, when hemisphere jut diameter is certain, the radian of arc-shaped curved surface increases gradually, then the height protruded is deepened gradually, and the emergence angle of light beam 30 will increase gradually, and dispersion effect also will be more remarkable.
embodiment 2
The present embodiment is substantially identical with the structure of embodiment 1, difference is: hemisphere jut 20 is semisphere, the diameter of hemisphere jut 20 is 0.90mm, and the height of hemisphere jut 20 is 0.45mm, and the spacing between two adjacent hemisphere juts of colleague or same column is 0.385mm.
embodiment 3
The present embodiment is substantially identical with the structure of embodiment 1, difference is: hemisphere jut 20 is Part-spherical, the diameter of hemisphere jut 20 is 0.925mm, and the height of hemisphere jut 20 is 0.460mm, and the spacing between two adjacent hemisphere juts of colleague or same column is 0.395mm.
Present invention also offers a kind of back light system, this back light system have employed above-mentioned light guide plate, light guide plate has multiple hemisphere jut 20, the arc-shaped curved surface of the plurality of hemisphere jut can carry out scattering to the light beam of certain ranges of incidence angles, make light guide plate itself have diffusion function, save the cost of required diffuser plate during assembling back light system; Hemisphere jut and light-passing board adopt same material simultaneously, and one-body molded, and therefore there is not light between hemisphere jut and light-passing board and transmit interface, light loss reduces; In addition, the present invention is optimized the diameter of hemisphere jut, the parameter such as height and spacing according to the difference of light guide plate material, improve light percent of pass and the dispersion effect of light guide plate, ensure that light guide plate sends the light source briliancy of area source, thus improve the overall optical property of back light system.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.Any person skilled in the art scholar all without prejudice under spirit of the present invention and category, can modify above-described embodiment or changes.Therefore, such as have in art usually know the knowledgeable do not depart from complete under disclosed spirit and technological thought all equivalence modify or change, must be contained by claim of the present invention.
Claims (4)
1. one kind adopts PS material and exiting surface has the light guide plate of large circle point structure, comprise light-passing board, described light-passing board has the incidence surface imported by light beam in light-passing board, the exiting surface that light beam is derived in light-passing board and the bottom surface relative with exiting surface, it is characterized in that: described light-passing board adopts PS material, the exiting surface of described light-passing board is provided with multiple hemisphere jut integrated with light-passing board, the diameter of hemisphere jut is 0.890-0.925mm, the height of hemisphere jut is 0.415-0.460mm, described hemisphere jut is that ranks shape is uniformly distributed, spacing between adjacent two hemisphere juts is 0.375-0.395mm.
2. a kind of PS of employing material according to claim 1 and exiting surface have the light guide plate of large circle point structure, it is characterized in that: the shape of described hemisphere jut is semisphere or Part-spherical.
3. a kind of PS of employing material according to claim 1 and exiting surface have the light guide plate of large circle point structure, it is characterized in that: the size of described hemisphere jut is consistent.
4. a back light system, comprises light guide plate, it is characterized in that: described light guide plate adopts the light guide plate according to any one of claim 1-3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510779240.0A CN105372750A (en) | 2015-11-13 | 2015-11-13 | Light guide plate by adopting PS material and with light-out surface in large dot structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510779240.0A CN105372750A (en) | 2015-11-13 | 2015-11-13 | Light guide plate by adopting PS material and with light-out surface in large dot structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105372750A true CN105372750A (en) | 2016-03-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510779240.0A Pending CN105372750A (en) | 2015-11-13 | 2015-11-13 | Light guide plate by adopting PS material and with light-out surface in large dot structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105372750A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105698045A (en) * | 2014-11-28 | 2016-06-22 | 江苏欧密格光电科技股份有限公司 | High-reflectance LED backlight plate |
| CN110352319A (en) * | 2016-11-18 | 2019-10-18 | 康宁股份有限公司 | Micro-structural light guide plate and device comprising it |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2588388Y (en) * | 2002-12-28 | 2003-11-26 | 鸿富锦精密工业（深圳）有限公司 | Light conducting board device |
| WO2006022270A1 (en) * | 2004-08-24 | 2006-03-02 | Zeon Corporation | Direct-under backlight |
| US7223004B2 (en) * | 2003-04-18 | 2007-05-29 | Hon Hai Precision Ind. Co., Ltd. | Light guide plate with narrowed center and surface light source device incorporating same |
| TWM317025U (en) * | 2007-02-09 | 2007-08-11 | K Bridge Electronics Co Ltd | Backlight module |
| CN101408630A (en) * | 2007-10-12 | 2009-04-15 | 鸿富锦精密工业（深圳）有限公司 | Backlight module unit and prism lens |
| US20100309406A1 (en) * | 2009-06-09 | 2010-12-09 | Min Joo Kim | Backlight unit and liquid crystal display device having the same |
| CN203433139U (en) * | 2013-07-29 | 2014-02-12 | 信利半导体有限公司 | Backlight module group and light-guide plate thereof |
-
2015
- 2015-11-13 CN CN201510779240.0A patent/CN105372750A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2588388Y (en) * | 2002-12-28 | 2003-11-26 | 鸿富锦精密工业（深圳）有限公司 | Light conducting board device |
| US7223004B2 (en) * | 2003-04-18 | 2007-05-29 | Hon Hai Precision Ind. Co., Ltd. | Light guide plate with narrowed center and surface light source device incorporating same |
| WO2006022270A1 (en) * | 2004-08-24 | 2006-03-02 | Zeon Corporation | Direct-under backlight |
| TWM317025U (en) * | 2007-02-09 | 2007-08-11 | K Bridge Electronics Co Ltd | Backlight module |
| CN101408630A (en) * | 2007-10-12 | 2009-04-15 | 鸿富锦精密工业（深圳）有限公司 | Backlight module unit and prism lens |
| US20100309406A1 (en) * | 2009-06-09 | 2010-12-09 | Min Joo Kim | Backlight unit and liquid crystal display device having the same |
| CN203433139U (en) * | 2013-07-29 | 2014-02-12 | 信利半导体有限公司 | Backlight module group and light-guide plate thereof |
Non-Patent Citations (1)
| Title |
|---|
| 庄晓薇: "背光源系统均匀导光与亮度增强的方法研究", 《中国优秀硕士学位论文全文数据库信息科技辑》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105698045A (en) * | 2014-11-28 | 2016-06-22 | 江苏欧密格光电科技股份有限公司 | High-reflectance LED backlight plate |
| CN110352319A (en) * | 2016-11-18 | 2019-10-18 | 康宁股份有限公司 | Micro-structural light guide plate and device comprising it |
| US11092733B2 (en) | 2016-11-18 | 2021-08-17 | Corning Incorporated | Microstructured light guide plates and devices comprising the same |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160302 |
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| RJ01 | Rejection of invention patent application after publication |