CN205691810U - Light guide plate, backlight and display device - Google Patents
Light guide plate, backlight and display device Download PDFInfo
- Publication number
- CN205691810U CN205691810U CN201620610528.5U CN201620610528U CN205691810U CN 205691810 U CN205691810 U CN 205691810U CN 201620610528 U CN201620610528 U CN 201620610528U CN 205691810 U CN205691810 U CN 205691810U
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- guide plate
- light
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- light guide
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Abstract
The utility model discloses a kind of light guide plate, backlight and display device, light guide plate includes light conducting plate body, also include at least in multiple first sites of the first predetermined position of exiting surface of light conducting plate body, first site includes the first transparent base and the first reflective particles being dispersed in the first transparent base, first reflective particles has the first concentration, wherein, the first predeterminated position is that light source incidence is to the position, dark space of formation in light conducting plate body.Backlight includes this light guide plate, and display device includes this backlight.This light guide plate enables to uniform in light emission at exiting surface.
Description
Technical field
This utility model relates to technical field of liquid crystal display, is specifically related to a kind of light guide plate, backlight and display device.
Background technology
The line source that light guide plate sends for LED light source is converted into area source.Owing to each line source has fixing
The angle of divergence, therefore, when line source irradiates light guide plate, may form dark space on light guide plate.
Therefore, how to eliminate the dark space formed on light guide plate and become the technical problem that this area is urgently to be resolved hurrily.
Summary of the invention
This utility model is intended at least to solve one of technical problem present in prior art, it is proposed that a kind of light guide plate,
Backlight and display device.
This utility model first aspect, relates to a kind of light guide plate, and including light conducting plate body, described light guide plate also includes at least
In multiple first sites of the first predetermined position of the exiting surface of described light conducting plate body, described first site includes that first is saturating
Bright matrix and the first reflective particles being dispersed in described first transparent base, described first reflective particles has the first concentration,
Wherein, described first predeterminated position is that light source incidence is to the position, dark space of formation in described light conducting plate body.
Preferably, described light guide plate also includes that multiple second site, described second site are arranged on described light conducting plate body
Exiting surface on remove in the region outside described first predeterminated position, described second site includes the second transparent base and dispersion
The second reflective particles in described second transparent base, described second reflective particles has the second concentration, and described second dense
Degree is less than or equal to described first concentration.
Preferably, described light guide plate also includes that multiple second site, described second site are arranged on described light conducting plate body
The second predetermined position of exiting surface, remaining position of described light conducting plate body is provided with described first site, described
Two sites include the second transparent base and the second reflective particles being dispersed in described second transparent base, described second reflective
Grain has the second concentration, and described second concentration is less than or equal to described first concentration, and described second predeterminated position is for just to institute
State the region of light source incidence extremely described light guide plate.
Preferably, described first concentration is 5wt% to 30wt%, and described second concentration is 0wt% to 5wt%.
Preferably for multiple described first sites, the closer to described light source just to region described first site in
The first concentration of the first reflective particles the biggest.
Second aspect of the present utility model, relates to a kind of backlight, including the light guide plate described in any of the above-described embodiment.
The third aspect of the present utility model, relates to a kind of display device, including the backlight described in any of the above-described embodiment
Source.
Advantage of the present utility model and have the beneficial effect that light guide plate of the present utility model, at least at the first predeterminated position, i.e.
Light source incidence, to the position, dark space of formation in light conducting plate body, is provided with multiple first site, and wherein the first site has dispersion
The first reflective particles in the first transparent base, when the light that light source is launched is irradiated into the first inside, site, is arranged on
Incident light can be reflected by the first reflective particles therein such that it is able to is effectively improved the light distribution of position, dark space,
It is further able to dark space present on light guide plate.
Accompanying drawing explanation
Accompanying drawing is used to offer and is further appreciated by of the present utility model, and constitutes a part for description, with following
Detailed description of the invention be used for explaining this utility model together, but be not intended that restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the sight schematic diagram of the line source angle of divergence of LED light source in an embodiment；
Fig. 2 is light conducting plate structure schematic diagram in an embodiment；
Fig. 3 is light conducting plate structure schematic diagram in another embodiment；
Fig. 4 is method for manufacturing light guide plate schematic flow sheet in an embodiment；
Fig. 5 is method for manufacturing light guide plate schematic flow sheet in another embodiment；
Fig. 6 is method for manufacturing light guide plate schematic flow sheet in another embodiment；
Fig. 7 is method for manufacturing light guide plate schematic flow sheet in another embodiment.
Description of reference numerals
100: light guide plate；
110: light conducting plate body；
111: exiting surface；
111a: the first predeterminated position；
111b: the first site；
111c: the second site；
200: light source.
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described in detail.It should be appreciated that herein
Described detailed description of the invention is merely to illustrate and explains this utility model, is not limited to this utility model.
With reference to Fig. 1 and Fig. 2, first aspect of the present utility model relates to a kind of light guide plate 100, and this light guide plate 100 includes leading
Tabula rasa body 110, this light guide plate 100 also includes at least at first predeterminated position of exiting surface 111 of this light conducting plate body 110
Multiple first site 111b at 111a, wherein this first site 111b includes the first transparent base (not showing that in figure) and divides
The first reflective particles (not showing that in figure) being dispersed in this first transparent base.First reflective particles has the first concentration, should
First concentration can be 5wt%, it is also possible to is 30wt%, naturally it is also possible to is any one value between the two.When first is anti-
When light granule uses the first different concentration, corresponding different reflectance.Specifically, when the first concentration is in the concentration in above-mentioned interval
In the range of time, concentration is the highest, and the reflectance of the first reflective particles is the biggest.It addition, above-mentioned first predeterminated position 111a is that light source enters
It is mapped in this light conducting plate body 110 position, dark space formed, when in light conducting plate body 110 side, is provided with one or more light
During source 200, the first predeterminated position 111a now is a fixing position.It is more specifically, the light source of the present embodiment
200 can use LED light source, and the light that LED light source is sent is line source, and each LED light source all has the fixing angle of divergence,
Often organizing and will occur light and dark phenomenon between adjacent LED light source, meanwhile, the angle of divergence often organizing adjacent LED light source is handed over
Vent bottom set portion, it may appear that LED light source irradiate less than phenomenon, be additionally disposed in the LED light source of light conducting plate body 110 edge, because of
Its angle of divergence is fixed, thus light conducting plate body 110 edge also there will be irradiate less than phenomenon, the most above-mentioned position, dark space
Put and include but not limited to three of the above position.
The light guide plate 100 of the present embodiment, at least incides light conducting plate body at the first predeterminated position 111a, i.e. light source 200
The position, dark space formed on 110, is provided with multiple first site 111b, and wherein the first site 111b has and is dispersed in transparent base
The first interior reflective particles, when the line source that LED light source is launched is irradiated into the first site 111b inside, is disposed therein
Incident light can be reflected by the first reflective particles such that it is able to is effectively improved the light distribution of position, dark space.
Preferably, above-mentioned light guide plate 100 also includes multiple second site 111c, and wherein the second site 111c is arranged on leaded light
Removing in the region outside the first predeterminated position 111a on the exiting surface 111 of plate body 110, this second site 111c includes second
Transparent base (not showing that in figure) and the second reflective particles (not showing that in figure) being dispersed in the second transparent base, wherein
Second reflective particles has the second concentration, and the second concentration is less than or equal to the first concentration, and wherein the second concentration can be
0wt%, it is also possible to for 5wt%, naturally it is also possible to be any one value between the two, the second reflective particles concentration now by
In less than or equal to the first reflective particles concentration, therefore the reflectance of the first reflective particles is more than or equal to the second reflective particles
Reflectance.Because the light that LED light source sends is line source, the reflection by the second reflective particles in the second site can be more preferable
The line source that LED light source is sent by ground is converted into area source.
This structure is one of them embodiment of light guide plate 100, uses the reflective particles of variable concentrations content, and secretly
The reflective particles concentration of zone position more than the reflective particles concentration of other positions, is in high concentration content reflective of position, dark space
Granule, its reflectance is bigger, it is possible to effectively regulate the light of position, dark space.
First reflective particles is in dark space, needs higher concentration, the line source that now can be sent LED light source to enter
The a large amount of reflection of row, in order to the light distribution of regulation position, dark space, and the second reflective particles is in position, non-dark space, it is only necessary to linear light
Source is reflected on a small quantity, just can regulate the light distribution being in position, non-dark space, by the granule of these two kinds of variable concentrations, permissible
Light guide plate 100 is made to go out light evenly.
With reference to Fig. 3, can be in the lump with reference to Fig. 1, in another embodiment, light guide plate 100 also includes multiple second net
Point 111c, wherein this second site 111c be arranged on light conducting plate body 110 exiting surface 111 the second predeterminated position (in figure also
Not shown), remaining position of light conducting plate body 110 is provided with the first site 111b, and wherein the second predeterminated position is just to light
Source 200 is incident to the region of light guide plate 100.The structure of this second site 111c is same as described above, and therefore not to repeat here.
In the light guide plate 100 of this structure, the first site 111b occupies exiting surface 111 district of this light conducting plate body 110
Most of position in territory, including position, dark space, the second site 111c occupies exiting surface 111 region of this light conducting plate body 110
Other position (position, non-dark space).Light guide plate 100 1 aspect of this kind of structure can effectively regulate the light of position, dark space, separately
On the one hand, when this light guide plate 100 in extreme circumstances, also can regulate light distribution problem, such as dot density cannot reduce, but
It is to also need to higher reflectance to improve light-emitting uniformity.More specifically, because site the least cause cannot molding or
Person, because dot density is too low, causes the apparent situation in site, and both of these case can cause the line being sent LED light source
Source reflection degree reduces, and causes light guide plate 100 to go out light uneven, now can use the light guide plate 100 of this example structure,
Owing to entirety have employed the first site 111b of high concentration, local have employed the second site 111c of low concentration, the of high concentration
One its reflectance of site 111b is big, occupies most positions of light conducting plate body 110, it is possible to effectively regulate going out of light guide plate 100
Optical uniformity.
Preferably for multiple first site 111b, the closer to light source 200 just to region the first site 111b in
First concentration of the first reflective particles is the biggest.Because the closer to light source 200 just to region, line source is darker, it is therefore desirable to more
High reflectance, it is therefore desirable to the first reflective particles of high concentration, it is possible to the most effectively regulate the uniform in light emission of light guide plate 100
Property.
The manufacture method of above-mentioned light guide plate 100 is described below in detail.
With reference to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, for an embodiment of this light guide plate 100 manufacture method, the method includes following
Step:
S100, offer light conducting plate body 110；
S200, at least at the first predeterminated position 111a of the exiting surface 111 of this light conducting plate body 110, arrange multiple first
Site 111b, wherein the first site 111b includes the first transparent base (not showing that in figure) and is dispersed in the first transparent base
The first reflective particles (not showing that in figure), wherein the first reflective particles has the first concentration, and in the present embodiment, first is dense
Degree is chosen as 30wt%, and wherein, the first predeterminated position 111a is that light source incidence is to the position, dark space of formation in light conducting plate body 110
Put.The explanation of position, dark space herein is identical with the explanation of this utility model first aspect, and therefore not to repeat here.
By the position, dark space at least formed on the first predeterminated position 111a, i.e. light source incidence to light conducting plate body 110
Place, arranges multiple first site 111b, and wherein the first site 111b has reflective of first be dispersed in the first transparent base
Grain, when the line source that LED light source is launched is irradiated into the first site 111b inside, the first reflective particles energy being disposed therein
The enough light to incidence reflects such that it is able to be effectively improved the light distribution of position, dark space.
With reference to Fig. 1, Fig. 2, Fig. 3 and Fig. 5, for second embodiment of this light guide plate 100 manufacture method, including following step
Rapid:
S100, offer light conducting plate body 110；
S200, at least at the first predeterminated position 111a of the exiting surface 111 of this light conducting plate body 110, arrange multiple first
Site 111b, wherein the first site 111b includes the first transparent base (not showing that in figure) and is dispersed in the first transparent base
The first reflective particles (not showing that in figure), wherein the first reflective particles has the first concentration, and in the present embodiment, first is dense
Degree is chosen as 30wt%, and wherein, the first predeterminated position 111a is that light source incidence is to the position, dark space of formation in light conducting plate body 110
Put.The explanation of position, dark space herein is identical with the first embodiment, and therefore not to repeat here.
S300, multiple second site 111c is set in light conducting plate body 110, the second site 111c be arranged on light guide plate this
Removing in the region outside the first predeterminated position 111a on the exiting surface 111 of body 110, wherein the second site 111c includes that second is saturating
Bright matrix (not showing that in figure) and the second reflective particles (not showing that in figure) being dispersed in the second transparent base, second is anti-
Light granule has the second concentration value, and the second concentration value is chosen as 5wt% herein.
This scheme is to make an embodiment of light guide plate method, the reflective particles of employing variable concentrations content, and
The reflective particles concentration of position, dark space more than the reflective particles concentration of other positions, is in high concentration content anti-of position, dark space
Light granule, its reflectance is bigger, it is possible to effectively regulate the light of position, dark space.It addition, the light sent because of LED light source
For line source, can preferably the line source that LED light source sends be turned by the reflection of the second reflective particles in the second site
Change area source into.
Now it is in dark space due to the first reflective particles, needs higher concentration, in order to the linear light that LED light source is sent
Source is reflected in a large number, and then effectively regulates the light distribution of position, dark space, and the second reflective particles is in position, non-dark space, only needs
Line source reflected on a small quantity, just can regulate the light distribution being in position, non-dark space, by these two kinds of variable concentrations
Granule, so that light guide plate goes out light evenly.
With reference to Fig. 1, Fig. 2, Fig. 3 and Fig. 6, for the 3rd embodiment of this method for manufacturing light guide plate, comprise the following steps:
S100, offer light conducting plate body 110；
S200, at least at the first predeterminated position 111a of the exiting surface 111 of this light conducting plate body 110, arrange multiple first
Site 111b, wherein the first site 111b includes the first transparent base (not showing that in figure) and is dispersed in the first transparent base
The first reflective particles (not showing that in figure), wherein the first reflective particles has the first concentration, and in the present embodiment, first is dense
Degree is chosen as 5wt%, and wherein, the first predeterminated position 111a is that light source incidence is to the position, dark space of formation in light conducting plate body 110.
The explanation of position, dark space herein is identical with the explanation of this utility model first aspect, and therefore not to repeat here.
S300, arrange multiple at the second predeterminated position (not showing that in the figure) place of the exiting surface 111 of light conducting plate body 110
Second site 111c, remaining position of light conducting plate body 110 arranges the first site 111b, and wherein the second predeterminated position is the most right
Light source 200 is incident to the region of light guide plate 100.The structure of this second site 111c is same as described above, and therefore not to repeat here.Second
Site 111c includes the second transparent base (not showing that in figure) and is dispersed in the second transparent base (not showing that in figure)
Second reflective particles, the second reflective particles has the second concentration, and the second concentration is 1wt% or 0wt% herein.
It is pointed out that in step s 200, multiple first site 111b be arranged on light conducting plate body 110 except described
Position outside second predeterminated position.
The above-mentioned another one embodiment for making light guide plate method, in the light guide plate 100 that the method makes, first
Site 111b occupies most of position in exiting surface 111 region of this light conducting plate body 110, including position, dark space, the second net
Point 111c occupies the other position (position, non-dark space) in exiting surface 111 region of this light conducting plate body 110.Leading of this kind of structure
Tabula rasa 100 1 aspect can effectively regulate the light of position, dark space, on the other hand, when this light guide plate 100 in extreme circumstances, also
Light distribution problem, such as dot density can be regulated cannot reduce, but light equal to improve to also need to higher reflectance
Even property.More specifically because site the least cause cannot molding or because dot density too low, cause site high-visible
Situation, both situation can cause the line source degree of reflection that sent LED light source to reduce, cause light guide plate 100 to go out light
Uneven, now can use the light guide plate 100 of this example structure, owing to entirety have employed the first site of high concentration
111b, local have employed the second site 111c of low concentration, and first its reflectance of site 111b of high concentration is big, occupies leaded light
Most positions of plate body 110, it is possible to effectively regulate the light-emitting uniformity of light guide plate 100.
With reference to Fig. 1, Fig. 2, Fig. 3 and Fig. 7, for the 4th embodiment of this light guide plate 100 manufacture method, including following step
Rapid:
S100, offer light conducting plate body 110；
S200, at least printing multiple first at the first predeterminated position 111a of the exiting surface 111 of this light conducting plate body 110
Site 111b, wherein the first site 111b includes the first transparent base (not showing that in figure) and is dispersed in the first transparent base
The first reflective particles (not showing that in figure), wherein the first reflective particles has the first concentration.
In the present embodiment, the first concentration is chosen as 30wt%, and more specifically, the first reflective particles in this method is
Ink, i.e. utilizes the printing-ink material containing high astigmatism material (such as silicon dioxide and titanium dioxide), in light conducting plate body 110
Exiting surface 111 on stamp the first circular or square site 111b with screen painting, wherein, the first predeterminated position 111a is light
The position, dark space formed in light conducting plate body 110 is incided in source.The explanation of position, dark space herein and this utility model first party
The explanation in face is identical, and therefore not to repeat here.
Preferably for multiple first site 111b, the closer to light source 200 just to region the first site 111b in
First concentration of the first reflective particles is the biggest.Because the closer to light source 200 just to region, line source is the darkest, it is therefore desirable to more
High reflectance, it is therefore desirable to the first reflective particles of high concentration, it is possible to the most effectively regulate the uniform in light emission of light guide plate 100
Property.
S300, the first site 111b is carried out drying and processing.
S400, in light conducting plate body 110, print multiple second site 111c, the second site 111c be printed on light guide plate this
Removing in the region outside the first predeterminated position 111a on the exiting surface 111 of body 110, wherein the second site 111c includes that second is saturating
Bright matrix (not showing that in figure) and the second reflective particles (not showing that in figure) being dispersed in the second transparent base, second is anti-
Light granule has the second concentration value, and the second concentration value is chosen as 5wt% herein.
Second reflective particles is also ink, i.e. utilizes the printing containing high astigmatism material (such as silicon dioxide and titanium dioxide)
Ink material, removes on the exiting surface 111 of light conducting plate body 110 in the region outside first predeterminated position 111a and prints with half tone
Stencil circle or the second square site 111c.
S500, the second site 111c is carried out drying and processing.
In the manufacturing process of light guide plate 100, mode of printing is used to make the first site 111b and the second site 111c, should
The molding of method site is fast, is suitable for a large amount of production.After the first site 111b is completed for printing, carry out drying and processing, it is possible to accelerate
First site 111b dry run so that the first site 111b rapid shaping, equally after the second site 111c is completed for printing,
It is also adopted by drying and processing, there is same beneficial effect.
Second aspect of the present utility model, relates to a kind of backlight (not showing that in figure), and this backlight includes first party
The light guide plate 100 of any one embodiment that face is provided.
The backlight of this structure is because having the light guide plate 100 of said structure, it is possible to well solve the light of position, dark space
High light joint problem so that the line source that LED light source is sent can homogenous diffusion, the light beam on exiting surface can be uniformly distributed.
Above-mentioned backlight also includes LED light source, and wherein LED light source is arranged in the light-emitting area of light conducting plate body 110.
The third aspect of the present utility model, relates to a kind of display device (not showing that in figure), and this display device includes
State the backlight of any one embodiment.
The display device of this structure because having above-mentioned backlight, light source can homogenous diffusion, in this display device
Illumination does not haves light and dark phenomenon.
Above-mentioned display device also includes display floater (not showing that in figure), and backlight is for providing light for display floater
Source.
Above-mentioned display device can be that the electronics such as display, GPS navigator, mobile phone, notebook computer, panel computer set
Standby.
It is understood that embodiment of above be merely to illustrate that principle of the present utility model and use exemplary
Embodiment, but this utility model is not limited thereto.For those skilled in the art, without departing from this
In the case of the spirit of utility model and essence, can make various modification and improvement, these modification and improvement are also considered as this reality
With novel protection domain.
Claims (7)
1. a light guide plate, including light conducting plate body, it is characterised in that described light guide plate also includes at least at described light guide plate originally
Multiple first sites of the first predetermined position of the exiting surface of body, described first site includes the first transparent base and is dispersed in
The first reflective particles in described first transparent base, described first reflective particles has the first concentration, wherein, described first pre-
If position is that light source incidence is to the position, dark space of formation in described light conducting plate body.
Light guide plate the most according to claim 1, it is characterised in that described light guide plate also includes multiple second site, described
Second site is arranged on the exiting surface of described light conducting plate body in the region removed outside described first predeterminated position, and described
Two sites include the second transparent base and the second reflective particles being dispersed in described second transparent base, described second reflective
Grain has the second concentration, and described second concentration is less than or equal to described first concentration.
Light guide plate the most according to claim 1, it is characterised in that described light guide plate also includes multiple second site, described
Second site is arranged on the second predetermined position of the exiting surface of described light conducting plate body, remaining position of described light conducting plate body
Place is provided with described first site, and described second site includes the second transparent base and is dispersed in described second transparent base
Second reflective particles, described second reflective particles has the second concentration, and described second concentration is first dense less than or equal to described
Degree, described second predeterminated position is just to described light source incidence to the region of described light guide plate.
4. according to the light guide plate described in Claims 2 or 3, it is characterised in that described first concentration is 5wt% to 30wt%, institute
Stating the second concentration is 0wt% to 5wt%.
Light guide plate the most according to claim 4, it is characterised in that for multiple described first sites, the closer to described light
Source just to region described first site in the first concentration of the first reflective particles the biggest.
6. a backlight, it is characterised in that include the light guide plate described in any one of claim 1-5.
7. a display device, it is characterised in that include the backlight described in claim 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620610528.5U CN205691810U (en) | 2016-06-20 | 2016-06-20 | Light guide plate, backlight and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620610528.5U CN205691810U (en) | 2016-06-20 | 2016-06-20 | Light guide plate, backlight and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205691810U true CN205691810U (en) | 2016-11-16 |
Family
ID=57415358
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620610528.5U Expired - Fee Related CN205691810U (en) | 2016-06-20 | 2016-06-20 | Light guide plate, backlight and display device |
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| Country | Link |
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| CN (1) | CN205691810U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105911634A (en) * | 2016-06-20 | 2016-08-31 | 京东方科技集团股份有限公司 | Light guiding plate, backlight source, display device and light guiding plate manufacturing method |
| CN110446887A (en) * | 2016-12-09 | 2019-11-12 | 亮锐有限责任公司 | Light guide with patterning ink |
| US10680148B2 (en) | 2016-12-09 | 2020-06-09 | Lumileds Llc | Light guide with patterned ink |
-
2016
- 2016-06-20 CN CN201620610528.5U patent/CN205691810U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105911634A (en) * | 2016-06-20 | 2016-08-31 | 京东方科技集团股份有限公司 | Light guiding plate, backlight source, display device and light guiding plate manufacturing method |
| CN110446887A (en) * | 2016-12-09 | 2019-11-12 | 亮锐有限责任公司 | Light guide with patterning ink |
| US10680148B2 (en) | 2016-12-09 | 2020-06-09 | Lumileds Llc | Light guide with patterned ink |
| US10991860B2 (en) | 2016-12-09 | 2021-04-27 | Lumileds Llc | Light guide with patterned ink |
| CN110446887B (en) * | 2016-12-09 | 2021-09-24 | 亮锐有限责任公司 | Light guide with patterned ink |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161116 |
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| CF01 | Termination of patent right due to non-payment of annual fee |