CN214503946U - Light guide plate and light source module - Google Patents
Light guide plate and light source module Download PDFInfo
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- CN214503946U CN214503946U CN202120702260.9U CN202120702260U CN214503946U CN 214503946 U CN214503946 U CN 214503946U CN 202120702260 U CN202120702260 U CN 202120702260U CN 214503946 U CN214503946 U CN 214503946U
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Abstract
The utility model provides a light guide plate, this light guide plate package rubbing board body, a plurality of first strip structures and a plurality of second strip structures. The plate body is provided with a light incident surface and a light emergent surface. The plurality of first strip-shaped structures and the plurality of second strip-shaped structures are arranged on the light-emitting surface. The first strip-shaped structures and the second strip-shaped structures extend from the light incidence surface to the extending direction far away from the light incidence surface, and the first strip-shaped structures and the second strip-shaped structures are arranged along the arrangement direction. Any two adjacent first strip structures have a space therebetween. The spacing gradually changes from one side to the other side of the first strip-shaped structures along the arrangement direction. At least one of the second strip-shaped structures is arranged at the interval between any two adjacent first strip-shaped structures. The utility model discloses provide a light source module who has this light guide plate in addition. The utility model discloses a light guide plate and light source module can promote the regional luminance of dark band and the light degree of consistency, and do not influence the display screen taste.
Description
Technical Field
The present invention relates to a light source module, and more particularly to a light guide plate and a light source module using the same.
Background
In general, a liquid crystal display device includes a liquid crystal display panel and a backlight module, and since the liquid crystal display panel itself does not emit light, the backlight module is required to provide a display light source to the liquid crystal display panel. Therefore, the main function of the backlight module is to provide a display light source with high luminance and high uniformity.
The backlight module can be divided into a side-in type backlight module and a direct type backlight module. In the conventional edge-type backlight module, when a high-directivity microstructure and a film with a good light-receiving property are matched, most light rays are easily concentrated in the center of a picture. Although the light utilization rate can be effectively improved by the mode, the brightness contrast is easily generated at the left side and the right side and the center, and partial dark bands are formed at the left side and the right side.
By adjusting the pitch between the microstructures, the above-mentioned situation can be reduced. However, when the distance is too large to exceed a certain range, a line pattern may be generated on the picture of the display panel from which light is emitted, thereby affecting the taste of the whole picture.
The background section is provided to aid in understanding the present invention, and therefore the disclosure of the background section may include some prior art that does not constitute a part of the knowledge of one skilled in the art. Furthermore, the disclosure of the "background" does not represent a representation of the disclosure or the problems that may be solved by one or more embodiments of the present invention, or of what is known or appreciated by those of ordinary skill in the art prior to filing the present application.
SUMMERY OF THE UTILITY MODEL
The utility model provides a light guide plate can promote the regional luminance of dark band and the light degree of consistency, and does not influence the display screen taste.
The utility model provides a light source module can promote the regional luminance of dark band and the light degree of consistency, and does not influence the display screen taste.
Other objects and advantages of the present invention can be obtained from the technical features disclosed in the present invention.
In order to achieve one or a part of or all of the above or other objects, an embodiment of the present invention provides a light guide plate including a plate body, a plurality of first strip structures, and a plurality of second strip structures. The plate body is provided with a light incident surface and a light emergent surface, and the light emergent surface is adjacent to the light incident surface. The plurality of first strip structures are arranged on the light-emitting surface. The first strip-shaped structures extend from the light incident surface to the extending direction far away from the light incident surface, and the first strip-shaped structures are arranged along the arrangement direction. The extending direction is not parallel to the arrangement direction. Any two adjacent first strip structures have a space therebetween. The spacing gradually changes from one side to the other side of the first strip-shaped structures along the arrangement direction. The plurality of second strip structures are arranged on the light-emitting surface. The plurality of second strip-shaped structures extend towards the extending direction, and the second strip-shaped structures are arranged along the arrangement direction. At least one of the second strip-shaped structures is arranged at the interval between any two adjacent first strip-shaped structures.
In order to achieve one or a part of or all of the above or other objects, an embodiment of the invention provides a light source module including a light emitting device and the light guide plate. The light-emitting element is arranged opposite to the light incident surface of the plate body.
The utility model discloses among the light source module, borrow by the arrangement method of a plurality of stripe structures on the adjustment light guide plate for interval between two adjacent a plurality of stripe structures of wanting presents the gradual change trend along the range direction, can let light transmit to the dark band region, and then reaches the effect that promotes the regional luminance of dark band and the light degree of consistency. Under the condition that the light-emitting elements have different light-emitting intensities corresponding to the light-in surface, the light-emitting elements can also be adjusted to be proper gradual change parameters. The utility model discloses under the design framework of light guide plate, when promoting the regional luminance of dark zone and the light degree of consistency, still can maintain and make the regional luminance of bright zone not show the reduction. On the other hand, at least one of the second strip-shaped structures is arranged between any two adjacent first strip-shaped structures, so that the situation that uneven bright and dark line grains are generated on a display picture due to the height difference between the first strip-shaped structures and the light-emitting surface caused by overlarge space can be reduced, and the taste of the display picture is further improved. The utility model discloses light source module is owing to use foretell light guide plate, consequently also has luminance and the light degree of consistency that promotes the dark zone region, and does not influence the effect of display screen taste.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
Fig. 1 is a schematic perspective view of a light source module according to an embodiment of the present invention.
FIG. 2 is a schematic cross-sectional view taken along line A-A' of FIG. 1.
Fig. 3A to fig. 3E are schematic views of a first strip structure according to other embodiments of the present invention.
Fig. 4A to 4C are schematic cross-sectional views of light guide plates according to other embodiments of the present invention.
List of reference numerals
1: light source module
10 light guide plate
20 light emitting element
30 reflective sheet
100: plate body
110 incident light surface
120, light-emitting surface
121: spacing region
130. 140 side surface
150 bottom surface
200 first strip structure
300 second strip structure
400 diffusion microstructure
A-A' is a cutting line
a. S, S1, S2, S3, S4, S5, S6
E direction of extension
H1, H2 distance
L is light
Le length
P1, P2 points
R is the arrangement direction
W1, W2, W3.
Detailed Description
The foregoing and other technical and scientific aspects, features and advantages of the present invention will be apparent from the following detailed description of a preferred embodiment, which is to be read in connection with the accompanying drawings. Directional terms as referred to in the following examples, for example: up, down, left, right, front or rear, etc., are simply directions with reference to the drawings. Accordingly, the directional terminology is used for purposes of illustration and is in no way limiting.
Fig. 1 is a schematic perspective view of a light source module according to an embodiment of the present invention. FIG. 2 is a schematic cross-sectional view taken along line A-A' of FIG. 1. Referring to fig. 1 and fig. 2, a light source module 1 of the present embodiment includes a light guide plate 10 and a light emitting device 20. The light guide plate 10 includes a plate body 100, a plurality of first strip structures 200 and a plurality of second strip structures 300. The plate body 100 has a light incident surface 110, a light emitting surface 120, two opposite side surfaces 130, 140 and a bottom surface 150, wherein the light emitting surface 120 is adjacent to the light incident surface 110, the side surfaces 130, 140 are respectively connected to the light incident surface 110, the light emitting surface 120 and the bottom surface 150, and the light emitting surface 120 is opposite to the bottom surface 150. The light emitting element 20 is disposed opposite to the light incident surface 110 of the plate body 100, and is configured to emit light L and to be incident on the light incident surface 110. The plurality of first strip structures 200 are disposed on the light-emitting surface 120. The first strip-shaped structures 200 extend from the light incident surface 110 to the extending direction E away from the light incident surface 110, and the first strip-shaped structures 200 are arranged along the arrangement direction R, wherein the extending direction E is not parallel to the arrangement direction R. In the present embodiment, the extending direction E is, for example, perpendicular to the light incident surface 110, and the arrangement direction R is, for example, parallel to the light incident surface 110, that is, the extending direction E is perpendicular to the arrangement direction R, but not limited thereto. The plurality of second stripe structures 300 are disposed on the light-emitting surface 120. The plurality of second bar structures 300 extend toward the extending direction E, and the second bar structures 300 are arranged along the arrangement direction R. The number of the first bar-shaped structures 200 and the second bar-shaped structures 300 in fig. 1 and fig. 2 is only for illustration, and the invention is not limited to the number of the first bar-shaped structures 200 and the second bar-shaped structures 300.
Any two adjacent first stripe structures 200 have a spacing S therebetween, and the spacing S ranges from 0.01 μm to 10mm, but is not limited thereto. The function of having the space S between any two adjacent strip structures 200 is to increase the probability of total reflection of the light L in the board body 100, and relatively speaking, the plurality of first strip structures 200 can make the light L exit from the light exit surface 120 of the board body 100. The spacing S gradually changes from one side to the other side of the first stripe structures 200 along the arrangement direction R. Specifically, the pitch S gradually changes from the side surface 130 to the side surface 140 of the plate body 100 in the arrangement direction R. The following will be described in detail by taking fig. 2 as an example. In fig. 2, the number of the first strip structures 200 is 7, and therefore, spaces S1, S2, S3, S4, S5 and S6 are located between the strip structures 200. In the present embodiment, the spacing S gradually increases from one side (the side 130 of the board body 100) to the other side (the side 140 of the board body 100) of the first stripe structures 200 along the arrangement direction R. That is, the distances of the pitches S1-S3 are increasingly larger, and the distances of the pitches S4-S6 are increasingly smaller. In the overall arrangement, the distances of the pitches S1 and S6 located on both sides are smallest and the distances of the pitches S3 and S4 located in the middle are largest among the pitches S1 to S6.
In addition, the spacing S preferably gradually changes from one side (the side surface 130 of the board body 100) to the other side (the side surface 140 of the board body 100) of the plurality of bar structures 200 along the arrangement direction R, for example, but not limited thereto. Taking this embodiment as an example, if the pitch S1 is 2mm, the pitch S2 is 4mm, the pitch S3 is 8mm, the pitch S4 is 8mm, the pitch S5 is 4mm, and the pitch S6 is 2 mm. According to different design requirements, the gradual change parameter can be readjusted, the utility model discloses the mode of gradual change is not restricted very much.
However, it is considered that the too large distance S may cause the light source module 1 to generate uneven bright and dark line patterns after emitting light to the display screen. Therefore, in the light guide plate 10 of the present embodiment, at least one of the second strip-shaped structures 300 is disposed at the space S between any two adjacent first strip-shaped structures 200, i.e., the number of the second strip-shaped structures 300 is, for example, greater than or equal to the number of the spaces S. Since the pitch S gradually changes from one side (the side surface 130 of the board body 100) to the other side (the side surface 140 of the board body 100) of the first strip-shaped structures 200 along the arrangement direction R, in the embodiment, the distance of the pitch S is, for example, directly proportional to the number of the second strip-shaped structures 300 disposed therebetween, but is not limited thereto. For example, in the second embodiment, 3 second stripe structures 300 are respectively disposed between the larger spacings S3 and S4, and 1 second stripe structure 300 is respectively disposed between the smaller spacings S1 and S6. In addition, the distance a between any two adjacent second bar-shaped structures 300 is, for example, the same, and the distance of the distance a is, for example, also the same as the distance between each first bar-shaped structure 200 and one second bar-shaped structure 200 adjacent to the first bar-shaped structure 200 in the plurality of second bar-shaped structures 300, that is, in the embodiment, the distance between any two adjacent bar-shaped structures on the light guide plate 10 is the same, but not limited thereto. In another embodiment, the pitch a may be arranged in a gradient manner like the pitch S, and the gradient manner is the same as the pitch S. For example, if the pitch S gradually increases from one side to the other side of the first stripe structures 200 along the arrangement direction R, the pitch a gradually increases from one of any two adjacent first stripe structures 200 to the other of the first stripe structures 200 along the arrangement direction R.
The cross-sectional shapes of the first strip-shaped structures 200 and the second strip-shaped structures 300 in the direction parallel to the arrangement direction R include a semi-circle shape (as shown in fig. 1) and a triangle shape, but are not limited thereto, the utility model discloses do not limit the shapes of the first strip-shaped structures 200 and the second strip-shaped structures 300, as long as can reach the control of light-emitting direction, the effect of scattering light can. In the present embodiment, the first bar structures 200 and the second bar structures 300 are, for example, semi-cylindrical.
Regarding the detailed structure of the plurality of first stripe structures 200, specifically, the length Le of the first stripe structure 200 in the extending direction E is greater than 0 and less than 500 mm. The width W1 of the first stripe structure 200 in the arrangement direction R is greater than 0 and less than 200 mm. The distance H1 between the vertex P1 of the first bar-shaped structure 200 and the light emitting surface 120, i.e., the height of the first bar-shaped structure 200, is greater than 0 and less than 200 mm. On the other hand, regarding the detailed structure of the plurality of second stripe structures 300, specifically, the length of the second stripe structures 300 in the extending direction E is, for example, the same as the length Le of the first stripe structures 200, and is greater than 0 and less than 500 mm. The width W2 of the second stripe structure 300 in the arrangement direction R is greater than 0 and less than 100 mm. The distance H2 between the vertex P2 of the second bar-shaped structure 300 and the light-emitting surface 120 is greater than 0 and less than 100mm, which is the height of the second bar-shaped structure 300. As can be seen from the above, in the present embodiment, the width W2 and the height (the distance H2 between the vertex P2 and the light-emitting surface 120) of the second stripe structure 300 are smaller than the width W1 and the height (the distance H1 between the vertex P1 and the light-emitting surface 120) of the first stripe structure 200, and specifically, the width W2 and the distance H2 are, for example, 0.01 to 0.5 times of the width W1 and the distance H1, respectively. Under the design, part of the light can still generate total reflection to be transmitted to the dark band region by the configuration of the spacing S, and a small amount of light can be emitted from the light guide plate 10 through the second strip-shaped structure 300, so that the situation that uneven bright and dark line grains are generated on a display picture due to the height difference between the first strip-shaped structure 200 and the light emitting surface 120 caused by the overlarge spacing S is reduced, and the taste of the display picture is further improved. The second stripe 300 can be adjusted to have different curvatures, and the light collecting characteristics are used to adjust the light ratio, thereby improving the light uniformity.
In the present embodiment, the light emitting element 20 includes a plurality of point light sources 20, such as, but not limited to, Light Emitting Diodes (LEDs). The light emitting elements 20 may also be other types of light source assemblies, such as a lamp tube, and the present invention is not limited to the type of light source. The number of the light emitting elements 20 in fig. 1 is merely an illustration, and the present invention is not particularly limited to the number of the light emitting elements 20.
The light guide plate 10 further includes a plurality of diffusion microstructures 400 disposed on the bottom surface 150. In the present embodiment, the diffusion microstructures 400 can be dots or other microstructures capable of diffusing light. In addition, the distribution density of the plurality of diffusion microstructures 400 can also be adjusted according to different design requirements or different optical effect requirements, and the present invention is not limited thereto.
The light source module 1 further includes a reflective sheet 30 disposed below the light guide plate 10 to reflect the light L leaking from the lower side of the light guide plate 10 back into the light guide plate 10, thereby improving the light utilization efficiency.
In the present embodiment, the light emitting surface 120 has, for example, a spacing region 121 on a side adjacent to the light incident surface 110, but is not limited thereto. The spacing region 121 does not have the first stripe structures 200 and the second stripe structures 300 and is a flat surface. Specifically, the distance from the side of the spacing region 121 adjacent to the light incident surface 110 to the side adjacent to the first strip-shaped structures 200 and the second strip-shaped structures 300 is greater than 0 and less than 100mm, which is the width W3 of the spacing region 121. Since the light emitting elements 20 are arranged beside the light guide plate 10 at intervals, after the emitted light L enters the light guide plate 10, a plurality of bright regions corresponding to the light emitting elements 20 and a dark region between the two light emitting elements 20 are generated, thereby forming a Hot spot (Hot spot) phenomenon with non-uniform brightness. By the arrangement of the spacing region 121, when the light L enters the light guide plate 10, the light L can be effectively mixed without being influenced by the structure, and the hot spot phenomenon of uneven brightness can be improved. In addition, the provision of the spacing region 121 can also reduce the possibility of damage to the plurality of first bar structures 200 and the plurality of second bar structures 300 when the edge of the plate body 100 is processed. Therefore, not only the light emitting surface 120 is adjacent to the light incident surface 110, but also the spacing region 121 can be disposed on a side of the light emitting surface 120 away from the light incident surface 110 or on a side of the light emitting surface 120 adjacent to the two side surfaces 130 and 140 respectively according to different design requirements, as shown in fig. 1.
In the light source module 1 of this embodiment, by adjusting the arrangement method of the first strip-shaped structures 200 on the light guide plate 10, the distance S between any two adjacent first strip-shaped structures 200 presents a gradual change trend along the arrangement direction R, the light L incident from the middle has a high probability of generating total reflection on the area corresponding to the distance S when being transmitted to the light emitting surface 120, and further being transmitted to the dark band areas on both sides, because the distance S between the first strip-shaped structures 200 on both sides is small and the first strip-shaped structures 200 are arranged more intensively, the light L is easy to be emitted from both sides of the light guide plate 10, and further the effect of improving the brightness and light uniformity of the dark band areas is achieved. The light emitting elements 20 can be adjusted to have suitable gradient parameters when they have different light emitting intensities corresponding to the light incident surface 110. Under the framework, the brightness and the light uniformity of the dark band area can be improved, and meanwhile, the brightness of the bright band area can be maintained to be not obviously reduced. On the other hand, since at least one of the plurality of second bar-shaped structures 300 is disposed at the space S between any two adjacent first bar-shaped structures 200, the situation that uneven bright and dark line patterns are generated on the display screen due to the height difference between the first bar-shaped structures 200 and the light emitting surface 120 caused by the overlarge space S can be reduced, and the quality of the display screen is further improved.
Fig. 3A to fig. 3E are schematic views of a first strip structure according to other embodiments of the present invention. Referring to fig. 1 and fig. 3A to fig. 3E, as described above, the cross-sectional shapes of the first stripe structures 200 in the direction parallel to the arrangement direction R include a semicircle (as shown in fig. 1) and a triangle (as shown in fig. 3A). On the other hand, the first stripe structures 200 may be, for example, protruded from the prism columns of the light emitting surface 120, or recessed in the light emitting surface 120, as shown in fig. 3B and 3C. In the concave embodiment, the length Le and the width W1 of the first bar-shaped structure 200 are defined as above, and the height of the first bar-shaped structure 200 is the distance from the bottom lowest point to the light-emitting surface 120, which is also greater than 0 and less than 200 mm. Although the first stripe structure 200 is illustrated in fig. 3A to 3C, the embodiment is also applicable to the second stripe structure 300. The present invention does not limit the first bar-shaped structure 200 and the second bar-shaped structure 300 to use the same pattern structure.
In addition, in the embodiment of fig. 1, the distance H1 between the vertex P1 of the first bar-shaped structure 200 and the light emitting surface 120 is constant from the end of the first bar-shaped structure 200 close to the light incident surface 110 to the end far from the light incident surface 110, and the distance H2 between the vertex P2 of the second bar-shaped structure 300 and the light emitting surface 120 is constant from the end of the second bar-shaped structure 300 close to the light incident surface 110 to the end far from the light incident surface 110, but the invention is not limited thereto. In other embodiments, the distance H1 may gradually increase from the end of the first bar-shaped structure 200 close to the light incident surface 110 to the end far from the light incident surface 110 (as shown in fig. 3D), and the distance H2 may gradually increase from the end of the second bar-shaped structure 300 close to the light incident surface 110 to the end far from the light incident surface 110 (not shown); or the distance H1 gradually decreases from the end of the first strip-shaped structure 200 close to the light incident surface 110 toward the end away from the light incident surface 110 and then increases gradually (as shown in fig. 3E), and the distance H2 gradually decreases from the end of the second strip-shaped structure 300 close to the light incident surface 110 toward the end away from the light incident surface 110 and then increases gradually (not shown). In addition, in the process of gradual change of the distance H1, if the distance H1 is gradually increased, the width W1 of the first stripe structure 200 is also increased with the increase of the distance H1, and if the distance H1 is gradually decreased, the width W1 of the first stripe structure 200 is also decreased with the decrease of the distance H1. Similarly, in the process of the gradual change of the distance H2, if the distance H2 is gradually increased, the width W2 of the second stripe structure 300 is also increased with the increase of the distance H2, and if the distance H2 is gradually decreased, the width W2 of the second stripe structure 300 is also decreased with the decrease of the distance H2.
Fig. 4A to 4C are schematic cross-sectional views of light guide plates according to other embodiments of the present invention. Referring to fig. 1 and fig. 4A to 4C, in the present embodiment, the pitch S gradually changes from one side (the side surface 130 of the board 100) to the other side (the side surface 140 of the board 100) of the first strip structures 200 along the arrangement direction R in a manner of increasing first and then decreasing second, but is not limited thereto. The gradual change mode can be adjusted when the light emitting elements 20 have different light emitting intensities at different positions corresponding to the light incident surface 110. For example, when the light-emitting intensities of the two sides of the light-emitting element 20 in fig. 1 are greater than the light-emitting intensity in the middle, as shown in fig. 4A, the spacing S is gradually decreased and then increased from one side (the side surface 130 of the plate body 100) to the other side (the side surface 140 of the plate body 100) of the first strip structures 200 along the arrangement direction R, so that the light L incident from the two sides has a high probability of generating total reflection on the region corresponding to the spacing S when being transmitted to the light-emitting surface 120, and further being transmitted to the middle dark band region. When the light intensity of the light emitting element 20 on the right side is greater than the light intensity of the light emitting element on the left side in fig. 1, the distance S gradually changes from one side (the side surface 130 of the plate 100) to the other side (the side surface 140 of the plate 100) of the first stripe structures 200 along the arrangement direction R as shown in fig. 4B, so that the light L incident from the right side is highly likely to be totally reflected on the area corresponding to the distance S when being transmitted to the light emitting surface 120, and then is transmitted to the dark band area on the left side. Similarly, when the light intensity of the left side of the light emitting element 20 in fig. 1 is greater than the light intensity of the right side, as shown in fig. 4C, the distance S gradually changes from one side (the side surface 130 of the plate 100) to the other side (the side surface 140 of the plate 100) of the first strip structures 200 along the arrangement direction R in a decreasing manner, so that the light L incident from the left side has a high probability of generating total reflection on the area corresponding to the distance S when being transmitted to the light emitting surface 120, and then being transmitted to the dark band area on the right side. In fig. 4A to 4C, the number of the first stripe structures 200 and the second stripe structures 300 is only an example of the arrangement, and is not limited to the number of the first stripe structures 200 and the second stripe structures 300.
In summary, in the light source module of this embodiment, by adjusting the arrangement method of the plurality of strip structures on the light guide plate, the distance between any two adjacent strip structures presents a gradual change trend along the arrangement direction, and the light incident from the middle has a higher probability of generating total reflection on the area corresponding to the distance when being transmitted to the light exit surface, and then being transmitted to the dark band areas on both sides. Under the condition that the light-emitting elements have different light-emitting intensities corresponding to the light-in surface, the light-emitting elements can also be adjusted to be proper gradual change parameters. Furthermore, be in the utility model discloses under the design framework of light guide plate, in promoting the regional luminance of dark zone and the light degree of consistency, still can maintain and make the regional luminance of bright zone not show the reduction. On the other hand, as at least one of the plurality of second strip-shaped structures is arranged at the interval between any two adjacent first strip-shaped structures, the situation that uneven bright and dark line grains are generated on a display picture due to the height difference between the first strip-shaped structures and the light-emitting surface caused by overlarge interval can be reduced, and the taste of the display picture is further improved. The utility model discloses the light source module is owing to use foretell light guide plate, consequently also has the luminance of promotion and the light degree of consistency, and does not influence the effect of display screen taste.
The above description is only a preferred embodiment of the present invention, and the scope of the present invention should not be limited thereby, and all the simple equivalent changes and modifications made according to the claims and the contents of the specification should be included in the scope of the present invention. Moreover, it is not necessary for any embodiment or claim of the invention to address all of the objects, advantages, or features disclosed herein. Furthermore, the abstract and the title of the specification are provided only for assisting the retrieval of patent documents and are not intended to limit the scope of the present invention. Furthermore, the terms "first," "second," and the like in the description and in the claims are used for naming elements (elements) or distinguishing between different embodiments or ranges, and are not intended to limit the upper or lower limit on the number of elements.
Claims (19)
1. The light guide plate comprises a plate body, a plurality of first strip-shaped structures and a plurality of second strip-shaped structures, wherein the first strip-shaped structures are arranged on the plate body in a parallel manner
The plate body is provided with a light incident surface and a light emergent surface, and the light emergent surface is adjacent to the light incident surface;
the plurality of first strip-shaped structures are arranged on the light outgoing surface, extend from the position close to the light incoming surface to the extending direction far away from the light incoming surface, are arranged along the arrangement direction, are not parallel to the arrangement direction, have a space between any two adjacent first strip-shaped structures, and gradually change from one side to the other side of the first strip-shaped structures along the arrangement direction; and
the plurality of second strip-shaped structures are arranged on the light-emitting surface, extend towards the extending direction, and are arranged along the arrangement direction, wherein at least one of the plurality of second strip-shaped structures is arranged between any two adjacent first strip-shaped structures at the interval.
2. The light guide plate according to claim 1, wherein the distance between any two adjacent second stripe structures is the same.
3. The light guide plate according to claim 2, wherein a distance between each of the first strip-shaped structures and an adjacent one of the second strip-shaped structures is the same as a distance between any two adjacent second strip-shaped structures.
4. The light guide plate according to claim 1, wherein a distance between any two adjacent second stripe structures gradually changes from one of any two adjacent first stripe structures to another in the arrangement direction.
5. The light guide plate according to claim 1, wherein the distance of the gaps is proportional to the number of the second stripe structures disposed therebetween.
6. The light guide plate according to claim 1, wherein the pitches gradually change from one side to the other side of the first strip-shaped structures along the arrangement direction in an arithmetic progression.
7. The light guide plate according to claim 1, wherein the pitch gradually increases from one side to the other side of the first stripe structures along the arrangement direction.
8. The light guide plate according to claim 1, wherein the pitch gradually decreases from one side to the other side of the first stripe structures along the arrangement direction.
9. The light guide plate according to claim 1, wherein the pitch gradually increases from one side to the other side of the plurality of first stripe structures along the arrangement direction.
10. The light guide plate according to claim 1, wherein the pitch gradually decreases from one side to the other side of the first stripe structures along the arrangement direction.
11. The light guide plate according to claim 1, wherein the pitch ranges from 0.01 μm to 10 mm.
12. The light guide plate according to claim 1, wherein the lengths of the first strip-like structures in the extending direction are greater than 0 and less than 500mm, and the lengths of the second strip-like structures in the extending direction are greater than 0 and less than 500 mm.
13. The light guide plate according to claim 1, wherein a distance between the top points of the first stripe structures and the light emitting surface is greater than 0 and less than 200mm, and a distance between the top points of the second stripe structures and the light emitting surface is greater than 0 and less than 100 mm.
14. The light guide plate according to claim 1, wherein the width of the first stripe structures in the arrangement direction is greater than 0 and less than 200mm, and the width of the second stripe structures in the arrangement direction is greater than 0 and less than 100 mm.
15. The light guide plate according to claim 1, wherein a cross-sectional shape of the first strip-shaped structures and the second strip-shaped structures in a direction parallel to the arrangement direction includes a semicircle and a triangle.
16. The light guide plate according to claim 1, wherein the distance between the top points of the first strip-shaped structures and the light emitting surface gradually increases from the end of the first strip-shaped structures close to the light incident surface toward the end far from the light incident surface, and then gradually decreases, and the distance between the top points of the second strip-shaped structures and the light emitting surface gradually increases from the end of the second strip-shaped structures close to the light incident surface toward the end far from the light incident surface, and then gradually decreases.
17. The light guide plate according to claim 1, wherein the distance between the top points of the first strip-shaped structures and the light emitting surface gradually decreases from the ends of the first strip-shaped structures close to the light incident surface toward the ends far from the light incident surface, and then gradually increases, and the distance between the top points of the second strip-shaped structures and the light emitting surface gradually decreases from the ends of the second strip-shaped structures close to the light incident surface toward the ends far from the light incident surface, and then gradually increases.
18. The light guide plate according to claim 1, wherein a spacer region is disposed on a side of the light exit surface adjacent to the light entrance surface, the spacer region does not have the first strip-shaped structures and the second strip-shaped structures and is a flat surface, and a distance from a side adjacent to the light entrance surface to a side adjacent to the first strip-shaped structures and the second strip-shaped structures is greater than 0 and less than 100 mm.
19. A light source module comprises a light guide plate and a light emitting element, wherein
The light guide plate comprises a plate body, a plurality of first strip-shaped structures and a plurality of second strip-shaped structures, wherein
The plate body is provided with a light incident surface and a light emergent surface, and the light emergent surface is adjacent to the light incident surface;
the plurality of first strip-shaped structures are arranged on the light outgoing surface, extend from the position close to the light incoming surface to the extending direction far away from the light incoming surface, are arranged along the arrangement direction, are not parallel to the arrangement direction, have a space between any two adjacent first strip-shaped structures, and gradually change from one side to the other side of the first strip-shaped structures along the arrangement direction; and
the plurality of second strip-shaped structures are arranged on the light-emitting surface, extend towards the extending direction and are arranged along the arrangement direction, wherein at least one second strip-shaped structure is arranged between any two adjacent first strip-shaped structures; and
the light-emitting element is arranged opposite to the light incident surface of the plate body.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120702260.9U CN214503946U (en) | 2021-04-07 | 2021-04-07 | Light guide plate and light source module |
| TW110204599U TWM619356U (en) | 2021-04-07 | 2021-04-26 | Light guide plate and light source module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120702260.9U CN214503946U (en) | 2021-04-07 | 2021-04-07 | Light guide plate and light source module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214503946U true CN214503946U (en) | 2021-10-26 |
Family
ID=78202552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120702260.9U Active CN214503946U (en) | 2021-04-07 | 2021-04-07 | Light guide plate and light source module |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN214503946U (en) |
| TW (1) | TWM619356U (en) |
-
2021
- 2021-04-07 CN CN202120702260.9U patent/CN214503946U/en active Active
- 2021-04-26 TW TW110204599U patent/TWM619356U/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| TWM619356U (en) | 2021-11-11 |
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| TR01 | Transfer of patent right |
Effective date of registration: 20240614 Address after: 69 Qunxing 3rd Road, Industrial Park, Suzhou City, Jiangsu Province Patentee after: NANO PRECISION (SUZHOU) CO.,LTD. Country or region after: China Patentee after: Coretronic Corp. Country or region after: TaiWan, China Address before: No.69 Qunxing 3rd road, Suzhou Industrial Park, Suzhou, Jiangsu Province, 215006 Patentee before: NANO PRECISION (SUZHOU) CO.,LTD. Country or region before: China Patentee before: Taiwan young Co.,Ltd. Country or region before: TaiWan, China |