CN108562963A - Light guide plate - Google Patents
Light guide plate Download PDFInfo
- Publication number
- CN108562963A CN108562963A CN201711474295.6A CN201711474295A CN108562963A CN 108562963 A CN108562963 A CN 108562963A CN 201711474295 A CN201711474295 A CN 201711474295A CN 108562963 A CN108562963 A CN 108562963A
- Authority
- CN
- China
- Prior art keywords
- light
- guide plate
- light guide
- site
- plate according
- 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
- G02B6/004—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
- G02B6/0043—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles provided on the surface of the light guide
-
- 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
- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
- G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/0018—Redirecting means on the surface of the light guide
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
- Light Guides In General And Applications Therefor (AREA)
Abstract
The invention discloses a kind of light guide plates, including incidence surface, light-emitting surface and bottom surface, the light-emitting surface is oppositely arranged with the bottom surface, the incidence surface is connect with the light-emitting surface and the bottom surface, multiple sites are set on the bottom surface, the medial recess of the site, is provided with reflecting piece in recess, and multiple sites are uniformly distributed on the bottom surface with wavy.In the present invention, incident ray passes through the reflection of reflecting piece in site and site in wavy distribution so that the light extraction of light-emitting surface is more uniform.
Description
Technical field
The present invention relates to leaded light component technical fields, and in particular, to a kind of light guide plate.
Background technology
Liquid crystal display device is widely used in hand because of the advantages such as radiativity is low, volume is light and short and power consumption is low
The fields such as machine, computer and TV.Liquid crystal surface itself due to liquid crystal display device does not have the characteristics of luminescence, therefore, it is necessary to
Planar light is provided to liquid crystal display panel by backlight module, to realize the display function of liquid crystal display device.Light guide plate is backlight mould
Group provides the key component of planar light, and light guide plate is used to guide the direction of light, and makes light-source brightness uniform, to be liquid crystal
Display device provides uniform planar light.
The light source of backlight module is usually point light source or linear light source, such as cold-cathode fluorescence lamp CCFL or LED, by light guide plate
Homogenizer from light source is booted up.Due to LED have many advantages, such as environmental protection and energy saving, service life it is long and in backlight mould
Using more and more extensive in group.However since LED sizes are smaller, shine and excessively concentrate, therefore the light sent out in LED enters to inject
It is excessively concentrated after light guide plate so that light guide plate light extraction is uneven, the problems such as being also easy to produce bright dark space or eight word bright lines.
Currently, various smooth incidence structure are usually set on the incidence surface of light guide plate to increase the uniformity of emergent light, but
It is phenomena such as light is also easy to produce light beam or halation after the light splitting of light incidence mechanism, still will appear that light guide plate light extraction is non-uniform to ask
Topic.
Invention content
In view of the foregoing, it is an object to a kind of light guide plate is provided, it is uneven to solve existing light guide plate light extraction
The problem of, increase the uniformity of light guide plate light extraction.
To achieve the goals above, the present invention uses following technical scheme：
Light guide plate of the present invention, including incidence surface, light-emitting surface and bottom surface, the light-emitting surface is opposite with the bottom surface to be set
It sets, the incidence surface is connect with the light-emitting surface and the bottom surface, and multiple sites, the middle part of the site are arranged on the bottom surface
Recess, is provided with reflecting piece, multiple sites are uniformly distributed on the bottom surface with wavy in recess.
Preferably, the incidence surface includes multiple V-shaped grooves, multiple V-shaped groove intervals or continuous setting, the V-shaped groove
The equal length of two bevel edges.
Preferably, along away from the direction of the incidence surface, the area of each site is identical, the distribution of the site
Density increases.
Preferably, increase along the area away from the direction of the incidence surface, each site, the distribution of the site
Density reduces.
Preferably, multiple guide-lighting blocks are provided on the light-emitting surface, the light guiding surface of the leaded light block is in the smooth of arcuation
Surface.
Preferably, the arc angle on the bottom edge of the light guiding surface is 0~180 °, the different guide-lighting block of multiple light guiding surface bottom edges arc angle
Scattering device is on the light-emitting surface.
Preferably, finite place piece, the position for fixing the light guide plate is arranged in the side of the light guide plate.
Preferably, the locating part is the groove opened up in the light guide plate side.
Preferably, the locating part is in the fixed protruding block in light guide plate side.
Preferably, the shape of the site is spherical shape or post shapes.
Compared with prior art, the present invention has the following advantages and beneficial effect：
By incidence surface by the site of scatter incident light to bottom surface, light can carry out accordingly the present invention between site
Refraction and reflection, so that light guide plate uniform in light emission.And site inner recess, reflecting piece is set in the valley, increases site
Reflection and refraction to incident ray, multiple sites are with wavy distribution so that scattering of the incident ray on light guiding surface is not present
Dead angle, to increase the uniformity of light guide plate light extraction.
Description of the drawings
Fig. 1 is light conducting plate structure schematic diagram of the present invention；
Fig. 2 is schematic bottom view in the present invention；
Fig. 3 is light-emitting surface schematic diagram in the present invention.
Specific implementation mode
Attached drawing describes embodiment of the present invention.Those skilled in the art will recognize, without departing from
In the case of the spirit and scope of the present invention, described embodiment can be repaiied with a variety of different modes or combinations thereof
Just.Therefore, attached drawing and description are regarded as illustrative in nature, and are not intended to limit the scope of the claims.In addition,
In this specification, attached drawing is drawn not in scale, and identical reference numeral indicates identical part.
The present embodiment is described in detail with reference to Fig. 1-Fig. 3.
Fig. 1 is light conducting plate structure schematic diagram of the present invention, as shown in Figure 1, light guide plate of the present invention includes：Incidence surface
1, light-emitting surface 2 and bottom surface 3, light-emitting surface 2 are oppositely arranged with bottom surface 3, and incidence surface 1 is connect with light-emitting surface 2 and bottom surface 3, are set on bottom surface 3
Multiple sites 4 are set, the medial recess of site 4 is provided with reflecting piece in recess, and multiple sites 4 are on bottom surface 3 with wavy equal
Even distribution.
Light guide plate plays the role of guiding light in backlight module, site 4 is arranged on the bottom surface 3 of light guide plate so that enter
The incident ray for penetrating face is reflected accordingly between each site 4, can be at the uniform light extraction of vertical direction, 4 middle part of site
Recess so that light scattering is more uniform, and reflecting piece is arranged in recess, can increase the reflection of light.It is more on bottom surface 3
A site 4 is uniformly distributed in wavy so that dead angle is not present in scattering of the incident ray on entire bottom surface 3, greatly increases
The uniformity of 2 light extraction of light-emitting surface, and then the performance of backlight module is improved, uniform planar light is provided for liquid crystal display device, is carried
High yield quality.
In a preferred embodiment, light guide plate can be rectangle or square plate, and upper and lower surface is respectively light-emitting surface 2
With bottom surface 3, front and back sides are incidence surface 1, and reflector plate or reflectance coating is arranged in left and right side, prevents light from being projected from left and right side,
Only it is emitted from light-emitting surface 2.The shape of site 4 can be the post shapes such as spherical shape or cylinder, square column.Site 4 can be to print
Mode be formed in the bottom surface 3 of light guide plate.
Preferably, incidence surface 1 includes multiple V-shaped grooves 11, and V-shaped groove 11 runs through light-emitting surface 2 and bottom surface 3, the apex angle of V-shaped groove 11
Towards light source, the interval of multiple V-shaped grooves 11 or continuous setting, the opening of all V-shaped grooves 11 is identical, two bevel edges of V-shaped groove 11
Equal length.Light into fashionable, first pass through 11 structure disperses of V-shaped groove, enters back into inside light guide plate, can increase through incidence surface 1
The uniformity of light transmission.Difference is formed according to the light source of backlight module, light guide plate can be there are two incidence surface 1, and two enter light
Face 1 is oppositely arranged.The present invention limits the size and spacing of V-shaped groove without specific, can be adjusted according to actual conditions.
Fig. 2 is schematic bottom view in the present invention, as shown in Fig. 2, multiple sites 4 are arranged on bottom surface 3, multiple sites 4 are in
Wavy distribution, according to the difference of 4 area of each site, distribution density of the multiple sites 4 on bottom surface 3 is different.Along away from
The direction of incidence surface 1, if the area of each site 4 is identical, the distribution density of site 4 increases, due to closer to incidence surface 1, light
Line is stronger, and luminous flux is larger, site 4 can be arranged less at this time, the distribution of site 4 is than sparse, then light is through incidence surface 1
It is more by less 4 scatter light flux of site into after inside light guide plate so that the light far from incidence surface 1 still compared with
By force, so that the light extraction of light-emitting surface 2 is more uniform；If the area of each site 4 gradually increases, the distribution density of site 4 subtracts
Small, at this point, in the side close to incidence surface 1, the area of site 4 is small, and distribution density is big, that is, the site 4 being distributed is than comparatively dense, light
After line enters through incidence surface 1, is first spread through the smaller site 4 of intensive area, form more careful light, can improve
The problem of bright dark degree unevenness reduces possibility phenomena such as light-emitting surface 2 generates light beam or halation, to increase the equal of light extraction
Even property.Site 4 can also be encrypted in the corner point of bottom surface 3, avoid corner point light excessively weak, to further increase the uniform of light extraction
Property.
Fig. 3 is light-emitting surface schematic diagram in the present invention, as shown in figure 3, being provided with multiple guide-lighting blocks 5, guide-lighting block on light-emitting surface 2
5 light guiding surface is the smooth surface in arcuation.After guide-lighting block 5 can make light be reflected by site 4, on light-emitting surface 2
It further spreads, promotes the performance of backlight module.The light guiding surface of guide-lighting block 5 is made of multi-line section, it is preferable that the bottom of light guiding surface
The arc angle on side is 0~180 °, and arc angle different 5 scattering device of guide-lighting block in multiple light guiding surface bottom edges is on light-emitting surface 2.Light guiding surface bottom
The setting of side arc angle, is adjusted according to actual conditions, to control diffusion of the light by guide-lighting block.
In order to avoid the movement of light guide plate position itself causes light extraction uneven, it is preferable that the side setting of light guide plate is limited
Position part, is used for the position of lightguide plate fixing.Wherein, locating part can be the groove opened up in light guide plate side.The shape of groove
It can be arc or rectangular.Locating part can also be in the fixed protruding block in light guide plate side 6.Fig. 1-Fig. 3 is only with locating part
Protruding block 6 is illustrated, and the present invention has no specific restriction to the size of groove or protruding block.
It these are only the preferred embodiment of the present invention, be not intended to restrict the invention, those skilled in the art is come
It says, the invention may be variously modified and varied.All within the spirits and principles of the present invention, any modification made by is equal
Replace, improve etc., it should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of light guide plate, which is characterized in that including incidence surface, light-emitting surface and bottom surface, the light-emitting surface is opposite with the bottom surface
Setting, the incidence surface connect with the light-emitting surface and the bottom surface, is arranged multiple sites on the bottom surface, in the site
Portion is recessed, and reflecting piece is provided in recess, multiple sites are uniformly distributed on the bottom surface with wavy.
2. light guide plate according to claim 1, which is characterized in that the incidence surface includes multiple V-shaped grooves, multiple V
Shape slot interval or continuous setting, the equal length of two bevel edges of the V-shaped groove.
3. light guide plate according to claim 1, which is characterized in that each described along away from the direction of the incidence surface
The area of site is identical, and the distribution density of the site increases.
4. light guide plate according to claim 1, which is characterized in that each described along away from the direction of the incidence surface
The area of site increases, and the distribution density of the site reduces.
5. light guide plate according to claim 1, which is characterized in that multiple guide-lighting blocks are provided on the light-emitting surface, it is described
The light guiding surface of guide-lighting block is the smooth surface in arcuation.
6. light guide plate according to claim 5, which is characterized in that the arc angle on the bottom edge of the light guiding surface is 0~180 °, more
Arc angle different guide-lighting block scattering device in a light guiding surface bottom edge is on the light-emitting surface.
7. light guide plate according to claim 1, which is characterized in that finite place piece is arranged in the side of the light guide plate, is used for
The position of the fixed light guide plate.
8. light guide plate according to claim 7, which is characterized in that the locating part is opened up in the light guide plate side
Groove.
9. light guide plate according to claim 7, which is characterized in that the locating part is fixed in the light guide plate side
Protruding block.
10. light guide plate according to claim 1, which is characterized in that the shape of the site is spherical shape or post shapes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711474295.6A CN108562963A (en) | 2017-12-29 | 2017-12-29 | Light guide plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711474295.6A CN108562963A (en) | 2017-12-29 | 2017-12-29 | Light guide plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108562963A true CN108562963A (en) | 2018-09-21 |
Family
ID=63529572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711474295.6A Pending CN108562963A (en) | 2017-12-29 | 2017-12-29 | Light guide plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108562963A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111458785A (en) * | 2020-05-13 | 2020-07-28 | 深圳市南极光电子科技股份有限公司 | Light guide plate with brightness improvement function and processing method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1892339A (en) * | 2005-07-06 | 2007-01-10 | 鸿富锦精密工业（深圳）有限公司 | Light-guiding board and back-light module using same |
| CN1932604A (en) * | 2005-09-16 | 2007-03-21 | 群康科技(深圳)有限公司 | Photoconducting plate and back light module using the same photoconducting plate |
| CN102261575A (en) * | 2010-05-28 | 2011-11-30 | 鸿富锦精密工业（深圳）有限公司 | Backlight module |
| CN203455507U (en) * | 2013-08-05 | 2014-02-26 | 东莞市元立电子科技有限公司 | Light guide plate |
| CN204667011U (en) * | 2015-05-08 | 2015-09-23 | 东莞市颖锋光电材料有限公司 | A kind of light guide plate of uniform in light emission |
| CN204807732U (en) * | 2015-07-25 | 2015-11-25 | 深圳市宝得利光电科技有限公司 | Light conducting plate |
| CN207895100U (en) * | 2017-12-29 | 2018-09-21 | 重庆市中光电显示技术有限公司 | Light guide plate |
-
2017
- 2017-12-29 CN CN201711474295.6A patent/CN108562963A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1892339A (en) * | 2005-07-06 | 2007-01-10 | 鸿富锦精密工业（深圳）有限公司 | Light-guiding board and back-light module using same |
| CN1932604A (en) * | 2005-09-16 | 2007-03-21 | 群康科技(深圳)有限公司 | Photoconducting plate and back light module using the same photoconducting plate |
| CN102261575A (en) * | 2010-05-28 | 2011-11-30 | 鸿富锦精密工业（深圳）有限公司 | Backlight module |
| CN203455507U (en) * | 2013-08-05 | 2014-02-26 | 东莞市元立电子科技有限公司 | Light guide plate |
| CN204667011U (en) * | 2015-05-08 | 2015-09-23 | 东莞市颖锋光电材料有限公司 | A kind of light guide plate of uniform in light emission |
| CN204807732U (en) * | 2015-07-25 | 2015-11-25 | 深圳市宝得利光电科技有限公司 | Light conducting plate |
| CN207895100U (en) * | 2017-12-29 | 2018-09-21 | 重庆市中光电显示技术有限公司 | Light guide plate |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111458785A (en) * | 2020-05-13 | 2020-07-28 | 深圳市南极光电子科技股份有限公司 | Light guide plate with brightness improvement function and processing method thereof |
| CN111458785B (en) * | 2020-05-13 | 2022-06-14 | 深圳市南极光电子科技股份有限公司 | Light guide plate with brightness improvement function and processing method thereof |
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