CN103543487B - A kind of large-size light-conducting plate - Google Patents
A kind of large-size light-conducting plate Download PDFInfo
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- CN103543487B CN103543487B CN201210240743.7A CN201210240743A CN103543487B CN 103543487 B CN103543487 B CN 103543487B CN 201210240743 A CN201210240743 A CN 201210240743A CN 103543487 B CN103543487 B CN 103543487B
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Abstract
The present invention discloses a kind of large-size light-conducting plate, and its plate body is four parts of decile, and on it, screen print lattice-point is divided into four some array elements; The reflecting surface of every part of plate body is divided into L shape region and large rectangle region, and L shape region is positioned at the junction of this part of plate body and adjacent part plate body, and large rectangle region is divided into the first right-angle triangle region and the second right-angle triangle region; Every bit array element include silk-screen in the gradual district in the first right-angle triangle region, silk-screen is at the sudden turn of events district in the second right-angle triangle region and the constant region of silk-screen in L shape region, in gradual district and sudden turn of events district, light direction is entered and array arrangement all along two sides in site, wherein the diameter of site all enters light direction along two sides and becomes large gradually, and the changing value in gradual district is less than sudden turn of events district; Site diameter in constant region all only becomes large along the entering light direction of side contacted with respective region gradually, and the light direction that enters along noncontact side is then equal diameter shape.This invention ensures that light-out effect and light extraction efficiency.
Description
Technical field
The present invention relates to light guide plate field, relate to a kind of large-size light-conducting plate in particular, it is under large-sized state, and the brightness of institute's forming surface light source still has higher homogeneity.
Background technology
Light guide plate is the critical component in colour liquid crystal display device background light source or LED flat lamp, and its Main Function converts pointolite or line source to area source, and the quality of light guide plate quality directly affects image quality or illumination effect.In order to improve light extraction efficiency, improve the homogeneity of light diffusion, existing light guide plate is general all forms dot matrix or grid in reflecting surface serigraphy.
When serigraphy dot matrix or grid, have at present and to adopt overall linear changing method, but, this overall linear changing method enters the situation of light for the light guide plate four sides occurred at present simultaneously, owing to entering the lack of parallelisme of light, not only light extraction efficiency is not high to make silk-screen light guide plate out, and the raising space critical constraints of brightness uniformity, cannot reach actual use needs.
As shown in Figure 1, it is the structural representation of existing a kind of light guide plate 200, wherein the size of all screen print lattice-points 210 is constant all the time, and the brightness uniformity in the middle of light guide plate 200 and limit, angle, completely by adjusting printing oil proportion to realize, is difficult to recall desirable brightness uniformity; In brief, because screen print lattice-point 210 is overall unchanged, cause entering rule with light and seriously do not mate, thus light extraction efficiency is lower.
As shown in Figure 2, it is the topology view of existing another kind of light guide plate 300, wherein whole screen print lattice-point 310 is made up of four identical region S0, the screen print lattice-point 310 of each region S0 changes in the size of the diagonal (in figure L direction) of plate body, its rate of change is a fixed value, this kind of design is compared to light guide plate shown in Fig. 1, there is light extraction efficiency preferably, but its subject matter still has 2 points: first, when in diagonal (i.e. L direction in figure), the brightness of screen print lattice-point 310 is the highest or minimum, cannot adjust; The second, there will be the bad visual effect of obviously brightness higher than other places in the perpendicular bisector direction on light guide plate four limit, affect overall appearance.
In view of this, the present inventor, for the above-mentioned defect further investigation of existing light guide plate when entering light situation in the face of four sides, has this case to produce then.
Summary of the invention
The object of the present invention is to provide a kind of large-size light-conducting plate, seriously uneven to solve the brightness when entering light in the face of four sides of existing light guide plate, the problem of user demand cannot be reached.
In order to reach above-mentioned purpose, solution of the present invention is:
A kind of large-size light-conducting plate, comprise plate body and be positioned at the screen print lattice-point on plate body reflecting surface, this plate body has four sides that can enter for light, wherein, this plate body comprises perpendicular bisector along reflecting surface four edges and four parts of decile, and this screen print lattice-point comprises identical and four the some array elements be separately positioned on four parts of plate bodys of structure; The reflecting surface of every part of plate body is divided into L shape region and large rectangle region, the large rectangle region of each part plate body includes a summit of light guide plate reflecting surface and two adjacent edges at this summit place, this L shape region is positioned at the junction of this part of plate body and adjacent part plate body, this large rectangle region is divided into the first right-angle triangle region and the second right-angle triangle region with this summit place two adjacent edge for the diagonal line of right-angle side, and this first right-angle triangle region is connected with light guide plate side; Every bit array element include silk-screen in the gradual district in the first right-angle triangle region, silk-screen is at the sudden turn of events district in the second right-angle triangle region and the constant region of silk-screen in L shape region, in this gradual district and sudden turn of events district, light direction is entered and array arrangement all along two sides in site, and wherein the diameter of site all enters light direction along two sides and becomes large gradually, and the changing value in this gradual district is less than sudden turn of events district; Site diameter in this constant region all only becomes large along the entering light direction of side contacted with respective region gradually, is then equal diameter shape along the light direction that enters perpendicular to noncontact side.
Further, this plate body reflecting surface is square, this large rectangle region is large square area, this L shape region then comprises the first rectangular area, the second rectangular area and little square area, the site diameter of this constant region in the first rectangular area and the second rectangular area all only becomes large along the entering light direction of side contacted with respective region gradually, is then equal diameter shape along the light direction that enters perpendicular to noncontact side; The site diameter of this constant region in little square area is fixed value, and in this little square area, the diameter of site is greater than the diameter of site in the first rectangular area and the second rectangular area.
Further, the site in this constant region, sudden turn of events district and gradual district on same radiation direction, the site diameter of this constant region is greater than the site diameter in sudden turn of events district, and the site diameter in this sudden turn of events district is greater than again the site diameter in gradual district.
After adopting said structure, a kind of large-size light-conducting plate that the present invention relates to, whole plate body is divided into four parts of decile by it, every part of structure is further divided into again the first right-angle triangle region, second right-angle triangle region and L shape region, wherein in the first right-angle triangle region, silk-screen goes out gradual district, this the second right-angle triangle silk-screen goes out sudden turn of events district, this L shape region silk-screen goes out constant region, when so it enters light in the face of four sides, good light extraction efficiency can be had, the dirigibility of each key point brightness adjustment of light guide plate can be taken into account again simultaneously, and based on the setting of constant region, four parts of plate bodys can be made to there will be bad visual effect at intersection, therefore compared with prior art, the present invention can eliminate the defect of traditional set-up mode, and ensure that light-out effect and light extraction efficiency.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing a kind of light guide plate;
Fig. 2 is the structural representation of existing another kind of light guide plate;
Fig. 3 be the present invention relates to a kind of light guide plate enter light schematic diagram;
Fig. 4 is the structural representation that the present invention relates to a kind of light guide plate reflecting surface;
Fig. 5 is the structural representation of a plate body and a some array element in Fig. 4;
Fig. 5 A, Fig. 5 B and Fig. 5 C are respectively the structural representation in the first right-angle triangle region, the second right-angle triangle region and L shape region.
In figure:
Light guide plate 100 plate body 1
Large rectangle region A first right-angle triangle region A1
Second right-angle triangle region A2 L shape region B
First rectangular area B1 second rectangular area B2
Little square area B3
Screen print lattice-point 2,21,22,23,24,25,26,27
Light direction J is entered in side 3
Light guide plate 200 screen print lattice-point 210
Light guide plate 300 screen print lattice-point 310.
Embodiment
In order to explain technical scheme of the present invention further, below by specific embodiment, the present invention will be described in detail.
As shown in Figure 3 and Figure 4, a kind of large-size light-conducting plate 100 that the present invention relates to, comprise plate body 1 and be positioned at the screen print lattice-point 2 on plate body reflecting surface, this plate body 1 has four sides 3 that can enter for light, refer to shown in Fig. 3, light is entered in these four sides 3 simultaneously, and light all enters along the direction perpendicular to respective side.
Refer to shown in Fig. 4, this plate body 1 is divided into four parts, concrete its is perpendicular bisector along reflecting surface four edges and decile is formed, in the diagram, this plate body comprises altogether 4 parts, i.e. S1, S2, S3 and S4, it is identical that this screen print lattice-point 2 comprises structure, and be separately positioned on four some array elements on four parts of plate bodys.
The reflecting surface of every part of plate body is divided into L shape region B and large rectangle region A, the large rectangle region A of each part plate body includes a summit of light guide plate 100 reflecting surface and two adjacent edges at this summit place, this L shape region B is positioned at the junction of this part of plate body and adjacent part plate body, such as please refer to shown in Fig. 4 and Fig. 5, illustrate with that part S1 in the lower right corner, wherein, namely this large rectangle region A refers to summit G1 and this summit two adjacent edge L1 and L2, and this L shape region B is then the connecting portion with adjacent part body S2 and S4 in this part of plate body S1.
More specifically, please assist with reference to shown in Fig. 5 A, Fig. 5 B and Fig. 5 C, this large rectangle region A is divided into the first right-angle triangle region A1 and the second right-angle triangle region A2 with its diagonal line for separatrix, this diagonal line be with this summit place two adjacent edge be right-angle side that, illustrate with part S1, be diagonal L 3, this first right-angle triangle region A1 is connected with light guide plate 100 side.
Every bit array element includes the gradual district of silk-screen at the first right-angle triangle region A1, silk-screen is at the sudden turn of events district of the second right-angle triangle region A2 and the silk-screen constant region at L shape region B, in this gradual district and sudden turn of events district, light direction J is entered and array arrangement all along two sides in site, and wherein the diameter of site all enters light direction J along two sides and becomes large gradually, the changing value in this gradual district is less than sudden turn of events district, illustrate as one: the rate of change in gradual district is relatively little, if be such as 1 more above, and be adjacently with it 1.0001 more down, next 1.002 are, its rate of change is 0.001, the rate of change in sudden turn of events district is relatively large, such as, before be a bit 1.5, and with it adjacent more lower be 1.51, be 1.52 with that, its rate of change is 0.01.Site diameter in this constant region all only becomes large along the entering light direction J of side contacted with respective region gradually, edge is then equal diameter shape perpendicular to the light direction J that enters of noncontact side, please refer to the screen print lattice-point 21,22 and 23 marked in figure, wherein screen print lattice-point 21 and screen print lattice-point 22 are for along entering light direction J perpendicular to noncontact side, and now the diameter of screen print lattice-point 21 and screen print lattice-point 22 is then equal; Screen print lattice-point 21 and screen print lattice-point 23 then due to screen print lattice-point 23 be positioned at screen print lattice-point 21 enter light direction J downstream, so, the diameter of screen print lattice-point 23 is just greater than the diameter of screen print lattice-point 21.
In the present embodiment, preferably, this plate body reflecting surface is square, this large rectangle region A is large square area, this L shape region B then comprises the first rectangular area B1, the second rectangular area B2 and little square area B3, the site diameter of this constant region in the first rectangular area B1 and the second rectangular area B2 all only becomes large along the entering light direction J of side contacted with respective region gradually, is then equal diameter shape along the light direction J that enters perpendicular to noncontact side; The site diameter of this constant region in little square area B3 is fixed value, in this little square area B3, the diameter of site is greater than the diameter of site in the first rectangular area B1 and the second rectangular area B2, by the setting of this constant region, thus make four parts of plate bodys can realize preferably transition at intersection, thus eliminate the bad visual effect of intersection.
More specifically, site in this constant region, sudden turn of events district and gradual district on same radiation direction, the site diameter of this constant region is greater than the site diameter in sudden turn of events district, such as shown in Figure 5, the diameter of screen print lattice-point 24 is greater than the diameter of screen print lattice-point 25, the site diameter in this sudden turn of events district is greater than again the site diameter in gradual district, and such as shown in Figure 5, the diameter of screen print lattice-point 26 is greater than the diameter of screen print lattice-point 27.
In sum, a kind of large-size light-conducting plate 100 that the present invention relates to, main four parts of whole plate body being divided into decile, every part of structure is further divided into again the first right-angle triangle region A1, the second right-angle triangle region A2 and L shape region B, wherein in the first right-angle triangle region A1, silk-screen goes out gradual district, this the second right-angle triangle silk-screen goes out sudden turn of events district, this L shape region B silk-screen goes out constant region, when so it enters light in the face of four sides, good light extraction efficiency can be had, the dirigibility of each key point brightness adjustment of light guide plate 100 can be taken into account again simultaneously
Compared with prior art, the present invention can eliminate the defect of traditional set-up mode, and ensure that light-out effect and light extraction efficiency.
Isometrical site shown in synthesizing map 1, the reducing site shown in Fig. 2 and the subregion site shown in Fig. 4, under identical testing conditions, its test result is as shown in the table:
| Site kind | Light extraction efficiency | Brightness uniformity | Visual effect | General comment |
| Isometrical site | 45.1LM/W | ≥62 | Entirety is partially dark | Poor |
| Reducing site | 52.5LM/W | ≥65 | Binding site has bright line | Generally |
| Subregion site | 58.4LM/W | ≥75 | Better | Better |
More specifically, its contrast test report: (testing tool is identical with method of testing)
1. use the test data of isometrical dot light guide plate:
2. use the test data of reducing dot light guide plate:
3. use the test data of subregion dot light guide plate:
Above-described embodiment and graphic and non-limiting product form of the present invention and style, any person of an ordinary skill in the technical field, to its suitable change done or modification, all should be considered as not departing from patent category of the present invention.
Claims (3)
1. a large-size light-conducting plate, comprise plate body and be positioned at the screen print lattice-point on plate body reflecting surface, this plate body has four sides that can enter for light, this plate body comprises perpendicular bisector along reflecting surface four edges and four parts of decile, and this screen print lattice-point comprises identical and four the some array elements be separately positioned on four parts of plate bodys of structure; It is characterized in that, the reflecting surface of every part of plate body is divided into L shape region and large rectangle region, the large rectangle region of each part plate body includes a summit of light guide plate reflecting surface and two adjacent edges at this summit place, this L shape region is positioned at the junction of this part of plate body and adjacent part plate body, this large rectangle region is divided into the first right-angle triangle region and the second right-angle triangle region with this summit place two adjacent edge for the diagonal line of right-angle side, and this first right-angle triangle region is connected with light guide plate side; Every bit array element include silk-screen in the gradual district in the first right-angle triangle region, silk-screen is at the sudden turn of events district in the second right-angle triangle region and the constant region of silk-screen in L shape region, in this gradual district and sudden turn of events district, light direction is entered and array arrangement all along two sides in site, and wherein the diameter of site all enters light direction along two sides and becomes large gradually, and the changing value in this gradual district is less than sudden turn of events district; Site diameter in this constant region all only becomes large along the entering light direction of side contacted with respective region gradually, is then equal diameter shape along the light direction that enters perpendicular to noncontact side.
2. a kind of large-size light-conducting plate as claimed in claim 1, it is characterized in that, this plate body reflecting surface is square, this large rectangle region is large square area, this L shape region then comprises the first rectangular area, the second rectangular area and little square area, the site diameter of this constant region in the first rectangular area and the second rectangular area all only becomes large along the entering light direction of side contacted with respective region gradually, is then equal diameter shape along the light direction that enters perpendicular to noncontact side; The site diameter of this constant region in little square area is fixed value, and in this little square area, the diameter of site is greater than the diameter of site in the first rectangular area and the second rectangular area.
3. a kind of large-size light-conducting plate as claimed in claim 1, it is characterized in that, site in this constant region, sudden turn of events district and gradual district on same radiation direction, the site diameter of this constant region is greater than the site diameter in sudden turn of events district, and the site diameter in this sudden turn of events district is greater than again the site diameter in gradual district.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210240743.7A CN103543487B (en) | 2012-07-12 | 2012-07-12 | A kind of large-size light-conducting plate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210240743.7A CN103543487B (en) | 2012-07-12 | 2012-07-12 | A kind of large-size light-conducting plate |
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| Publication Number | Publication Date |
|---|---|
| CN103543487A CN103543487A (en) | 2014-01-29 |
| CN103543487B true CN103543487B (en) | 2015-11-04 |
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| CN201210240743.7A Expired - Fee Related CN103543487B (en) | 2012-07-12 | 2012-07-12 | A kind of large-size light-conducting plate |
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| CN105403950B (en) | 2016-01-05 | 2019-11-12 | 京东方科技集团股份有限公司 | Light guide plate and preparation method thereof, array substrate and preparation method thereof and display device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201548783U (en) * | 2009-10-27 | 2010-08-11 | 彩虹集团公司 | Screen dot structure of liquid crystal television light conducting plate |
| CN201866617U (en) * | 2010-09-28 | 2011-06-15 | 彩虹集团公司 | Single-side light entry type LED (light emitting diode) backlight source device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI247142B (en) * | 2002-11-20 | 2006-01-11 | Hon Hai Prec Ind Co Ltd | Light guide plate used for backlight module |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201548783U (en) * | 2009-10-27 | 2010-08-11 | 彩虹集团公司 | Screen dot structure of liquid crystal television light conducting plate |
| CN201866617U (en) * | 2010-09-28 | 2011-06-15 | 彩虹集团公司 | Single-side light entry type LED (light emitting diode) backlight source device |
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| CN103543487A (en) | 2014-01-29 |
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