CN114236669B - Combined mesh point structure and light guide plate - Google Patents
Combined mesh point structure and light guide plate Download PDFInfo
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- CN114236669B CN114236669B CN202111585345.4A CN202111585345A CN114236669B CN 114236669 B CN114236669 B CN 114236669B CN 202111585345 A CN202111585345 A CN 202111585345A CN 114236669 B CN114236669 B CN 114236669B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/0038—Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of the light guide
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0058—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Planar Illumination Modules (AREA)
- Light Guides In General And Applications Therefor (AREA)
Abstract
The invention discloses a combined mesh point structure and a light guide plate, wherein the combined mesh point structure scheme is as follows: the first protruding portion and the first recessed portion are arranged, so that a mesh point structure formed by combining the first protruding portion and the first recessed portion is formed, the first protruding portion effectively collects and guides light, the transmission direction of the light is changed in a centralized mode, the first surface and the second surface of the first recessed portion are arranged in an inclined mode, light can be guided, the transmission direction is adjusted, the second surface reflects part of light reflected by the first protruding portion, therefore, the light transmission direction is changed under the common cooperation of the first protruding portion and the first recessed portion, the light is distributed reasonably, the light guiding effect is enhanced, the uniformity and the brightness of the light are effectively improved, the situation that the brightness of a light guide plate with the mesh point structure is uneven when the mesh point structure is used is reduced, and the product yield is improved.
Description
Technical Field
The invention relates to the field of light guide plate production and processing, in particular to a combined mesh point structure and a light guide plate.
Background
Liquid crystal display is as electronic equipment's display element, has extensively been applied to in various electronic product, for example smart mobile phone, computer or flat board etc. wherein backlight module is as an important part of liquid crystal display, and general backlight module includes LED light source, light guide plate and circuit board, and the light guide plate is the required area light source of light transmission reflection formation that sends the LED light source.
In the related art, the light guide plate includes a light guide plate body, two opposite surfaces of the light guide plate are a light exit surface and a mesh surface respectively, the light source can be incident from one side of the light guide plate, the mesh surface is used for reflecting and diffusing light, the light exit surface is used for light refraction and light exit, a plurality of protrusions arranged in a hemispherical shape are arranged on the mesh surface, when the light is incident to the protrusions, the protrusions can reflect the light to the light exit surface, and therefore the LED light source forms surface light source light exit.
For the related art, the inventor thinks that the reflection area and the diffusion angle are both limited when the dot structure is used, and when the light guide plate adopting the dot structure conducts light, the diffusion effect and the light guide effect are poor, so that the light emergent brightness of the light is uneven.
Disclosure of Invention
In order to solve the problem of uneven light emergent brightness, the application provides a combined mesh point and a light guide plate.
In a first aspect, the present application provides a combined dot structure, which adopts the following technical scheme:
the utility model provides a combination site structure, is including setting up in bellying and the first depressed part of the dot face of light guide plate, the bellying includes first bellying, first depressed part is followed the edge circumference of first bellying sets up, first bellying is towards the outside protrusion of light guide plate, and first depressed part includes first face and second face, first face is used for right the outside light reflection of first bellying, the second face is used for right the inside light reflection of first bellying, a side and the dot face coincidence of first face and second face are connected, first face with the dot face of second face all from the light guide plate to the second connection limit sets up towards the inside slope of light guide plate.
By adopting the technical scheme, when light enters the first convex part, the first convex part effectively gathers and guides the light, the transmission direction of the light is changed in a centralized manner, the reflection range of the light is enlarged, the light is reflected to the light-emitting surface of the light guide plate, the reflection intensity of the light is enhanced, the light can be reasonably emitted, the first concave part is arranged at the outer edge of the first convex part, the first surface and the second surface are obliquely arranged to guide the light, the first surface of the first concave part adjusts the transmission direction of the light source light outside the dot structure, the second surface reflects part of the light reflected by the first convex part, so that part of the light is more towards the light-emitting surface of the light guide plate, therefore, the transmission direction of the light is changed by utilizing the common cooperation of the first convex part and the first concave part, the light is reasonably distributed, the light guide effect is enhanced, the uniformity and the brightness of the light are effectively improved, and the occurrence of the uneven brightness of the light guide plate when the dot structure is used is reduced.
Preferably, the angle formed by connecting two opposite side edges of the first surface and the second surface ranges from 5 degrees to 20 degrees.
By adopting the technical scheme, the base angle formed by connecting the first surface and the second surface is set between 5 degrees and 20 degrees, so that the first surface can receive the receiving light rays around the screen points to diffuse the light rays to the light-emitting surface of the light guide plate, and the second surface can change the light rays reflected by the first convex parts, thereby improving the light-emitting brightness of the light rays when the light rays are emitted and improving the light guide effect of the light rays.
Preferably, an included angle between the first surface and the mesh point surface of the light guide plate is larger than an included angle between the second surface and the mesh point surface of the light guide plate.
Through adopting above-mentioned technical scheme, the gradient of first face is greater than the gradient of second face, so can increase the photic area of first face, can receive more light, will be located more peripheral light reflection of site and go out the plain noodles outgoing of light guide plate to reduce the condition emergence of light from the side light leak, reinforcing light efficiency.
Preferably, the protruding portions further include at least three second protruding portions, at least three second protruding portions are connected to the mesh surface of the light guide plate, at least three second protruding portions are located between the first recessed portions and the first protruding portions, and at least three second protruding portions are arranged along the circumferential direction of the first protruding portions.
Through adopting above-mentioned technical scheme, when light incides to the second bellying, the second bellying can gather reflection or refraction to light, changes the conduction direction of light, increases the photic area of bellying, optimizes the site structure, makes more light can gather and go out the plain noodles in the reflection to improve the light energy utilization ratio, and then improve the light energy.
Preferably, at least one second concave portion is arranged between the first convex portion and at least three second convex portions, and at least one second concave portion is arranged on the mesh point surface of the light guide plate.
Through adopting above-mentioned technical scheme, the setting of second depressed part changes the conduction direction of the light that the part does not guide first depressed part to can carry out diffuse reflection with more light, optimize the degree of consistency of light-emitting.
Preferably, the depth of the second recess is higher than the depth of the first recess.
Through adopting above-mentioned technical scheme, the degree of depth of second depressed part is greater than the degree of depth of first depressed part, and further to not carrying out directional guide through the light of first depressed part reflection or refraction, under the common cooperation of second depressed part and first depressed part, can optimize the diffusion degree of consistency of light, further optimize leaded light effect.
Preferably, the height of the second protruding portion is higher than the height of the first protruding portion.
Through adopting above-mentioned technical scheme, the second bellying is greater than first bellying, can reduce area of contact between light guide plate and the reflector plate to reduce the wearing and tearing because of the friction causes between light guide plate and the reflector plate, thereby prolong the life of light guide plate.
Preferably, the first surface is in arc transition from one side coinciding with the mesh point surface of the light guide plate to the second surface, and gradually protrudes towards one end close to the inside of the light guide plate.
Through adopting above-mentioned technical scheme, the first face circular arc transition sets up, can increase the leaded light scope of first face, is favorable to the light of a plurality of directions to tend to the play plain noodles of light guide plate and goes out.
In a second aspect, the present application provides a light guide plate.
The utility model provides a light guide plate, includes the light guide plate body, this two relative surfaces of light guide plate are provided with play plain noodles and dot face respectively, the one end of light guide plate body is light source incident end, be provided with a plurality ofly on the dot face as above-mentioned a combination dot structure, the diameter range of combination dot structure is 100um-300um, adjacent two the interval of combination dot structure reduces along the increase of dot density along the parallel light source direction from light source incident end, be provided with a plurality of light-emitting grooving on the play plain noodles, the light-emitting grooving is used for refracting the light to the light.
Through adopting above-mentioned technical scheme, set up light-emitting grooving and site structure on the light guide plate body, a plurality of combination sites set up on the site face, the combination site is to getting into this internal light of light guide plate and reflecting or refracting, change the conducting direction of light, make reflection or refraction that light can be more to go out the plain noodles, it can be refracted to light once more to set up the light-emitting arch simultaneously, so through the protruding and combination site cooperation of light-emitting, the light-emitting degree of consistency of effectual improvement light guide plate, improve the light-emitting luminance of light, reduce the light energy loss.
Preferably, the light-emitting incision groove is a V-shaped groove.
Through adopting above-mentioned technical scheme, the light-emitting is protruding for the arc, changes the light angle to light when the light-emitting, provides the guide for light, further optimizes the leaded light effect of light guide plate.
In summary, the present application includes at least one of the following beneficial technical effects:
1. through the cooperation of the first concave part and the first convex part and the addition of the second convex part and the second concave groove, the density of the dots can be reduced, the conduction direction of light rays can be adjusted, the light rays are uniformly distributed, the emergent brightness of the light rays is improved, and the light guide effect is enhanced;
2. through setting up combination site and light-emitting grooving, the diameter range 100um-300um of site reduces the site density of light guide plate, reduces the production of black spot or flaw when producing, reduces the printing opacity degree, improves the light-emitting degree of consistency, improves the production yield.
Drawings
Fig. 1 is a schematic perspective view of a combined dot structure of example 1 of the present application;
FIG. 2 is a front projection plan view of a dot structure according to an embodiment 1 of the present invention;
fig. 3 is a first optical path schematic diagram of an embodiment 1 of a combined dot structure according to the present application;
fig. 4 is a second optical schematic diagram of a dot structure in embodiment 1 of a combined dot structure of the present application;
fig. 5 is a third optical path schematic diagram of a dot structure according to an embodiment 1 of the present application;
FIG. 6 is a schematic perspective view of a composite dot structure of example 2 of the present application;
fig. 7 is a front projection plan view of a dot structure of an embodiment 2 of a combined dot structure of the present application;
fig. 8 is a schematic diagram of a dot structure light path of an embodiment 2 of a combined dot structure according to the present application;
fig. 9 is a schematic perspective view of a combined dot structure of embodiment 3 of the present application;
fig. 10 is a front projection plan view of a dot structure of an embodiment 3 of a combined dot structure of the present application;
fig. 11 is a schematic diagram of a dot structure light path of an embodiment 3 of a combined dot structure according to the present application;
FIG. 12 is a schematic perspective view of an embodiment 4 of a composite dot structure according to the present application;
fig. 13 is a front projection plan view of a dot structure of an embodiment 4 of a combined dot structure of the present application;
fig. 14 is a schematic diagram of a dot structure light path of embodiment 3 of a combined dot structure of the present application;
fig. 15 is a schematic perspective view of a light guide plate according to the present application.
Description of the reference numerals:
1. a boss portion; 2. a first boss; 201. a first curved surface; 202. a second curved surface; 3. a second boss; 301. a third curved surface; 302. a fourth curved surface; 4. a first recess; 401. a first side; 402. a second face; 5. a second recess; 501. a third surface; 502. a fourth surface; 503. a fifth side; 6. an orthographic projection surface of the first curved surface; 7. an orthographic projection surface of the second curved surface; 8. an orthographic projection plane of the third curved surface; 9. an orthographic projection surface of the fourth curved surface; 10. an orthographic projection plane of the first plane; 101. an orthographic projection surface of the first light facing surface; 102. an orthographic projection surface of the first diffusion surface; 11. an orthographic projection surface of the second surface; 111. an orthographic projection surface of the second light-facing surface; 112. an orthographic projection surface of the second diffusion surface; 12. an orthographic projection plane of the third face; 121. an orthographic projection surface of the third light-facing surface; 122. an orthographic projection surface of the third diffusion surface; 13. an orthographic projection surface of a fourth surface; 131. the orthographic projection surface of the fourth light-facing surface; 132. an orthographic projection surface of the fourth diffusion surface; 14. the orthographic projection surface of the fifth surface; 141. the orthographic projection surface of the fifth half surface 1; 142. the orthographic projection of the fifth half face 2; 15. a light guide plate body; 16. a mesh point surface; 17. a light-emitting surface; 18. cutting a light outlet groove; 19. combining the mesh point structures; 20. the light source incidence end.
Detailed Description
A combined dot structure and a light guide plate are described in detail below with reference to the accompanying drawings.
The application discloses a combined mesh point structure.
Example 1:
referring to fig. 1, a combined mesh point includes a protrusion 1 and a first recess 4 disposed on a mesh point surface 16 of a light guide plate, the protrusion 1 includes a first protrusion 2, the first protrusion 2 protrudes toward the outside of the light guide plate, and the height setting range of the first protrusion 2 is 10um to 20um, preferably 15um. First depressed part 4 sets up along the edge circumference of first bellying 2, and first depressed part 4 is sunken towards the light guide plate is inside, and the degree of depth setting scope of first depressed part 4 is 1um-6um, preferably 5um.
Referring to fig. 1 and 2, the first protrusion 2 includes a first curved surface 201 and a second curved surface 202, one side of the first curved surface 201 and the second curved surface 202 close to the dot surface 16 of the light guide plate is connected to the dot surface 16 of the light guide plate in an overlapping manner, two opposite sides of the first curved surface 201 and the second curved surface 202 are connected in an overlapping manner to form a first connecting edge, the first curved surface 201 and the second curved surface 202 are in arc transition from one side overlapping the dot surface 16 of the light guide plate to the first connecting edge, and the first curved surface 201 and the second curved surface 202 gradually protrude toward the inside far away from the light guide plate. In the present embodiment, the range of the included angle formed by the connection between the first curved surface 201 and the halftone dot surface 16 and the range of the included angle formed by the connection between the second curved surface 202 and the halftone dot surface 16 are both 110 degrees to 140 degrees.
Referring to fig. 3, when the first protrusion 2 is orthographically projected on the mesh surface 16 of the light guide plate, the orthographically projected surface of the first protrusion 2 may be circular, elliptical or polygonal, in this embodiment, the orthographically projected surface of the first protrusion 2 is circular, the diameter setting range is 40um to 70um, the first connecting edge is a straight line edge, and two end points of the first connecting edge are respectively overlapped with the outer edge of the orthographically projected surface of the first protrusion 2.
In particular when
=
The first connecting edge is overlapped with the center, the orthographic projection surface 6 of the first curved surface and the orthographic projection surface 7 of the second curved surface are both semicircular, the length of the first connecting edge is equal to the diameter of the orthographic projection surface of the first protruding portion 2, the light receiving area of the first curved surface 201 is equal to the light receiving area of the second curved surface 202, and light can be reflected in a concentrated mode and can be diffused.
Referring to fig. 1 and 3, the first concave portion 4 includes a first surface 401 and a second surface 402, a side of the first surface 401 and a side of the second surface 402 are both overlapped and connected to the dot surface 16 of the light guide plate, and a distance between the side of the second surface 402 overlapped with the dot surface 16 and the first connecting edge is set within a range of 0um to 20um. Meanwhile, a third connecting edge is formed by overlapping and connecting one side of the first surface 401 and one side of the second surface 402, which are far away from the dot surface 16 of the light guide plate, and the first surface 401 and the second surface 402 are gradually inclined toward the inside of the light guide plate from the side connected with the dot surface 16 of the light guide plate to the third connecting edge. The first surface 401 and the second surface 402 may also be disposed in a circular arc transition from one side edge connected to the dot surface 16 of the light guide plate to a third connecting edge, and gradually protrude toward the inside of the light guide plate.
The angle formed by the connection between the first surface 401 and the second surface 402 is set to be in the range of 5-20 °, and in this embodiment, the angle formed by the connection between the first surface 401 and the dot surface 16 of the light guide plate is set to be
The angle formed by the connection between the second surface 402 and the dot surface 16 of the light guide plate is
，
Is set within the range of 90-140 degrees,
is set within the range of 90-140 degrees. More specifically, the first surface 401 includes a first light facing surface and a first diffusing surface, the first light facing surface is connected to two opposite ends of the first diffusing surface in a superposed manner, the second surface 402 includes a second light facing surface and a second diffusing surface, and the second light facing surface is connected to two opposite ends of the second diffusing surface in a superposed manner.
Referring to fig. 2, when the first concave portions 4 are orthographically projected on the mesh surface 16 of the light guide plate, the orthographically projected surface of the first concave portions 4 may be circular or polygonal. In the present embodiment, the orthographic projection surface 10 of the first surface and the orthographic projection surface 11 of the second surface are both circular rings, the center of the orthographic projection surface 10 of the first surface coincides with the center of the orthographic projection surface 11 of the second surface, the diameter of the orthographic projection surface 10 of the first surface is larger than the diameter of the orthographic projection surface 11 of the second surface, and the orthographic projection surfaces 101 of the first light facing surface, 102 of the first diffusing surface, 3 of the second half surface and 4 of the second half surface are all fan-shaped. The outer circumference setting range of the orthographic projection surface 10 of the first surface is 100um-300um, and the diameter setting range of the orthographic projection surface 11 of the second surface is 97um-297um, so that the dot structure can be conveniently transcribed and formed, and the product yield is improved.
In the present embodiment, the following description will be made with the first surface 401 and the second surface 402 as inclined surfaces:
(1) Referring to FIG. 3, when
= 
The width of the orthographic projection surface 10 of the first surface is equal to the width of the orthographic projection surface 11 of the second surface, the first light facing surface and the second light facing surface are both light facing surfaces at the moment, the first light facing surface changes the light transmission direction around the mesh point, the second light facing surface changes the transmission direction reflected by the first protruding part, so that the diffuse reflection angle of part of light is narrowed, the first diffusion surface and the second diffusion surface are diffusion surfaces, the first diffusion surface increases the diffusion angle of the light around the mesh point, the second diffusion surface can increase the diffusion angle of the part of light reflected by the first protruding part and the reflection angle of the part of light inside the light guide plate, so that part of light is transmitted towards the direction far away from the light source incidence end, the diffusion effect of the part of light is enhanced, and the light can be uniformly emitted under the combined action of the first surface 401 and the second surface 402, so that the light emitting brightness is uniform.
(2) Referring to FIG. 4, when
> 
During, the orthographic projection surface 10 width of first face is greater than the 11 width of orthographic projection surface of second face, so can increase the photic area of first face 401, makes first face 401 receive more light, makes more light by change direction of conduction, so can further enlarge the diffusion angle of light, the diffuse reflection scope of increase light optimizes the leaded light effect to light.
(3) Referring to FIG. 5, when
< 
When the light source is used, the width of the orthographic projection surface 10 of the first surface is smaller than the width of the orthographic projection surface 11 of the second surface, the light receiving area of the second surface 402 is increased, the second surface 402 can receive more light rays, the second diffusion surface serves as a diffusion surface to receive more light rays emitted by the light source and part of light rays reflected in the first protruding portions 2 and reflect the light rays to the light emitting surface 17, the second light facing surface serves as a light facing surface to receive the light rays emitted by the light source and narrow the diffuse reflection angle of the light rays, so that the light rays tend to be reflected by the light emitting surface 17, the light energy utilization rate can be improved, the light guiding capacity of the first recessed portions 4 is enhanced, and the light emitting brightness of the light rays is improved.
Therefore, when the combined dot structure is arranged on the light guide plate, when a light source enters the light guide plate in a side-in type manner, part of light rays are reflected to an effective visual area of the light-emitting surface 17 through the first light-facing surface and the second light-facing surface, the transmission direction of the light rays is changed, so that the light rays can tend to a 0-degree normal viewing angle during light emitting, the diffusion angle of the part of light rays after passing through the first diffusion surface and the second diffusion surface is increased, part of light rays tend to one side of the light-emitting surface 17 of the light guide plate away from the light source incidence end, part of light rays pass through the first curved surface 201 and the second curved surface 202, and the first curved surface 201 and the second curved surface 202 intensively gather and reflect part of light rays to the light-emitting surface 17.
The implementation principle of the embodiment 1 of the combined dot structure of the present application is as follows: through setting up first depressed part 4 and the combination of first bellying 2 and forming the site structure, effectual change light is in a plurality of directions conduction direction, makes light can diffuse in a plurality of directions, makes more light concentrate reflection to going out the plain noodles 17, improves the degree of consistency and the light-emitting luminance when light goes out, and the site structure sets up can effectively improve the whole leaded light effect of light guide plate to light on the light guide plate, the uneven condition of luminance when reducing the light guide plate light-emitting.
Example 2:
referring to fig. 6, unlike embodiment 1, the boss 1 further includes at least three second bosses 3, and the at least three second bosses 3 are provided circumferentially along the first boss 2. Specifically speaking, each second protrusion 3 protrudes from the dot surface 16 of the light guide plate to the outside of the light guide plate, the distance setting range between each second protrusion 3 and the first protrusion 2 is 0um to 20um, the distance setting range between two adjacent second protrusions 3 is 0um to 25um, and each second protrusion 3 is tangent to one side edge of the dot surface 16 connected to the second surface 402 of the first recess 4.
Specifically, each second protrusion 3 includes a third curved surface 301 and a fourth curved surface 302, one side of the third curved surface 301 and one side of the fourth curved surface 302 are connected to the dot surface 16 of the light guide plate in an overlapping manner, and two opposite sides of the third curved surface 301 and the fourth curved surface 302 are connected to form a fourth connecting edge in an overlapping manner. The third curved surface 301 and the fourth curved surface 302 are in arc transition from one side edge connected with the dot surface 16 of the light guide plate to a fourth connecting edge, and gradually protrude towards one end far away from the inside of the light guide plate. In addition, the angles between the third curved surface 301 and the fourth curved surface 302 and the halftone dot surface 16 are set within a range of 100 degrees to 135 degrees.
Referring to fig. 6 and 7, the second protrusion 3 may be circular or elliptical or polygonal when orthographically projected on the mesh surface 16 of the light guide plate. In this embodiment, the orthographic projection surface of the second convex portion 3 is circular, the orthographic projection surface 8 of the third curved surface and the orthographic projection surface 9 of the fourth curved surface are semicircular, and the third connecting side is a straight side and is equal to the diameter of the orthographic projection surface of the second convex portion 3. In addition, the diameter of the orthographic projection surface of each second protruding part 3 can be adjusted according to the distribution of light, and the diameters of the orthographic projection surfaces between two adjacent second protruding parts 3 can be unequal.
At this time, the third curved surface 301 serves as a diffusion surface of the second convex portion 3 to diffuse light rays in a plurality of directions, thereby increasing the diffusion range of the light rays. The fourth curved surface 302 serves as a light-facing surface of the second protruding portion 3 and is capable of receiving light, so that the reflection angles of light in multiple directions are narrowed, and thus more light tends to exit from the light-emitting surface 17 of the light guide plate.
As shown in fig. 8, if the light source enters the light guide plate in a side-incident manner, the light receiving area of the protruding portion 1 can be increased by arranging the second protruding portions 3 along the circumferential direction of the first protruding portions 2, the fourth curved surface 302 can receive more light rays and perform concentrated reflection or refraction to the light emitting surface 17, so that the light rays are gathered and narrowed in multiple directions to form diffuse reflection angles, the third curved surface 301 can receive more light rays and increase diffusion angles, and perform partial light compensation on the fourth curved surface 302, thereby adjusting the transmission direction of the light rays in multiple directions, optimizing the light guiding effect of the dot structure, effectively improving the brightness and uniformity of the whole light guide plate, and solving the problem of uneven brightness.
If the light source adopts inside the direct incidence formula mode gets into the light guide plate, the site structure of setting on the light guide plate can with the LED lamp pearl one-to-one on the LED lamp plate, second bellying 3 this moment highly be higher than first bellying 2, the difference in height scope between second bellying 3 and the first bellying 2 is 3um-10um, the optimum is 4um, so can cover every LED lamp pearl, improve the light energy utilization ratio, reduce the area of contact between reflector plate and the light guide plate, and then reduce the wearing and tearing that the reflector plate caused to the friction of light guide plate. In the present embodiment, the height between two adjacent second protruding portions 3 can be adjusted according to the actual situation of the light energy distribution, that is, the heights of two adjacent protruding portions 1 can be unequal.
Therefore, light rays at the moment enter the light guide plate through the fourth curved surface 302 in a refraction mode, the light rays enter the light guide plate in a refraction mode, the third curved surface 301 or the fourth curved surface 302 reflects the light rays entering the second protruding portion 3 to the light emitting surface 17 in a refraction mode, the light rays at the moment can be gathered inside the second protruding portion 3 and reflected to the light emitting surface 17, the first concave portion 4 plays a role in diffusing the light rays, brightness compensation and adjustment are conducted on the light rays emitted by the second protruding portion 3, the light guide effect of the dot structure is improved accordingly, the light emitting brightness of the light guide plate is improved, and the lighting effect is enhanced.
The implementation principle of the embodiment 2 of the combined dot structure of the present application is as follows: through setting up at least three second bellying 3, can make light gather together and narrow the diffuse reflection angle in a plurality of directions, make the peripheral light of site more concentrate on the site and reflect to going out the plain noodles 17 through second bellying 3 and first bellying 2, set up this combination site structure on the light guide plate, can further promote the luminance when light goes out the light, can effectively improve the light efficiency, reduce the light energy loss, the reinforcing is to the ability of concealing the flaw of flaw.
Example 3:
referring to fig. 9, unlike embodiment 2, at least one second concave portion 5 is further disposed between at least two first convex portions 2 and at least two second convex portions 3, wherein the notch of each second concave portion 5 is overlapped and connected with the dot surface 16 of the light guide plate, the second concave portion 5 may be a tapered groove, and the setting range of the taper is 5 to 20 degrees. At least one second depressed part 5 sets up along first bellying 2 circumference, and the distance setting range between second depressed part 5 and the first bellying 2 is 0um-50um, and the distance setting range between second depressed part 5 and the second bellying 3 is 0um-50um. Two adjacent second recesses 5 may be disposed at an interval or may be disposed in a connected manner.
Referring to fig. 10, when the dot structure is orthographically projected on the dot surface 16, the orthographic projection surface of the second concave portion 5 is circular and the diameter size setting range is 30um to 50um. In the present embodiment, the orthographic projection area of the second concave portion 5 is tangent to the orthographic projection area of the first convex portion 2, and the inner circumference of the orthographic projection area of the second convex portion 3 is tangent to the orthographic projection area of the second concave portion 5.
Referring to fig. 11, in addition, the height of the second concave portion 5 may be higher than or equal to the height of the first concave portion 4, that is, the height difference setting range is 0um to 12um, and the diameters and the heights of the orthographic projection surfaces of two adjacent second concave portions 5 may be different. The arrangement can change the light transmission direction without being reflected by the first concave parts 4 or without being gathered and reflected by the second convex parts 3, so that more light rays around the first convex parts 2 are reflected to the light-emitting surface 17, and the overall light guide effect of the mesh points is enhanced.
In the present embodiment, when designing the dot structure, the height of each second recess 5 can be adjusted according to the light energy distribution, if the light source enters the light guide plate in a side-in manner, the height of the second recess 5 that is farther from the light source can be set to be higher, so that more light rays can be intercepted, and more light rays far away from the light source incident end change the conduction direction and are reflected to the side of the light emitting surface 17 far away from the light source incident end, thereby reducing light leakage from the side of the light guide plate, and further improving the light energy utilization rate of the dot structure.
The implementation principle of the embodiment 3 of the combined dot structure of the present application is as follows: the second concave part 5 is arranged to intercept and reflect light in multiple directions, so that the light around the first convex part 2 is optimally adjusted in the transmission direction, and the light can be distributed more uniformly.
Example 4:
referring to fig. 12, unlike embodiment 3, the second recessed portion 5 is provided along the circumferential direction of the first projecting portion 2, and the second recessed portion 5 is an annular groove in this case. In this embodiment, the second recessed portion 5 includes a third surface 501, a fourth surface 502, and a fifth surface 503, the fifth surface 503 is located between the third surface 501 and the fourth surface 502, one side of the third surface 501 overlaps and is connected to an outer edge of the fifth surface 503, one side of the fourth surface 502 overlaps and is connected to an inner edge of the fifth surface 503, one side of the third surface 501 away from the fifth surface 503 overlaps and is connected to the dot surface 16 of the light guide plate, and one side of the fourth surface 502 away from the fifth surface 503 overlaps and is connected to the dot surface 16 of the light guide plate. The third surface 501 and the fourth surface 502 may be disposed in an inclined manner or in a circular arc transition manner from the dot surface 16 to the fifth surface 503 of the light guide plate, and the angle between the third surface 501 and the dot surface 16 of the light guide plate and the angle between the fourth surface 502 and the dot surface 16 of the light guide plate are both 100 degrees to 144 degrees. The third surface 501 includes a third light receiving surface and a third diffusing surface, the third half surface coincides with opposite ends of the third diffusing surface, and the fourth light receiving surface coincides with opposite ends of the fourth diffusing surface.
Referring to fig. 13, when the second concave portion 5 orthographically projects the mesh surface 16, the orthographic projection surface 12 of the third surface, the orthographic projection surface 13 of the fourth surface, and the orthographic projection surface 14 of the fifth surface are all circular rings and center-overlapped, the area and shape of the third light-facing surface are equal to those of the third diffusion surface, and the area and shape of the fourth light-facing surface are equal to those of the fourth diffusion surface. More specifically, the outer edge of the orthographic projection surface 12 of the third surface is tangent to the orthographic projection surface of the second convex portion 3 or coincides with the inner edge formed by connecting the orthographic projection surfaces of the plurality of second convex portions 3, and the inner edge of the orthographic projection surface 13 of the fourth surface coincides with the edge of the orthographic projection surface of the first convex portion 2.
Referring to fig. 14, when light enters the dot structure, the third light-facing surface and the fourth diffusing surface serve as light-facing surfaces to narrow the diffuse reflection angle of the light, so that more light is reflected to the light-emitting surface 17. Meanwhile, the third diffusion surface is used as a diffusion surface to diffuse partial light and compensate brightness, so that the overall structure of the mesh points is further optimized, and when the mesh point structure is arranged on the light guide plate, the light guide plate has the effects of high brightness and good brightness uniformity, and the light guide effect of the light guide plate is enhanced.
The implementation principle of embodiment 4 of a combined dot structure of the present application is as follows: through setting up second depressed part 5 into the ring channel, can increase the meeting area and the diffusion area of second depressed part 5 this moment to can adjust by the light that first bellying 2 and second bellying 3 reflect out, with the conduction direction of fine setting light, make light reasonable in distribution, optimize the whole leaded light effect of site structure.
The application also provides a light guide plate.
Referring to fig. 15, a light guide plate includes a light guide plate body 15, two opposite surfaces of the light guide plate body 15 are a light exit surface 17 and a mesh surface 16, respectively, the light exit surface 17 is used for refracting light, the mesh surface 16 is used for reflecting light, and one end of the light guide plate body 15 is a light source incident end 20. The mesh surface 16 is provided with a plurality of combined mesh point structures 19 as described above, in this embodiment, the combined mesh point structures 19 may be arranged regularly or randomly, specifically, the arrangement may be performed according to the mesh point density, that is, the distance between two adjacent mesh points decreases along with the increase of the density from the light source incident end to the end far away from the light source along the light guide plate body 15, so as to adjust the light energy distribution and improve the uniformity of the light when the light goes out.
Referring to fig. 15, the light-emitting surface 17 is provided with a light-emitting groove 18, the light-emitting groove 18 is a V-shaped groove disposed along the light source incidence direction, the groove depth of the light-emitting groove 18 can be set to 20um-30um, in this embodiment, the light-emitting grooves 18 can be disposed in multiple numbers, and the light-emitting grooves 18 are sequentially disposed perpendicular to the light source incidence direction. The distance between two opposite groove sides of two adjacent light emergent cutting grooves 18 ranges from 0um to 100um. In addition, the two opposite groove walls of the light-emitting cutting groove 18 can be arc surfaces, and are in arc transition from the groove opening to the groove bottom, and gradually protrude towards the inside far away from the light guide plate body, so that the softness of light in light-emitting can be improved.
The application of a light guide plate is that: the light guide plate formed by the light emergent grooving 18 and the plurality of combined dot structures 19 can effectively improve the brightness and reasonably distribute light, and because the combined dots have larger diameters, the dots can be conveniently formed, the dot density is reduced, the light guide effect is enhanced, and the uniformity and the defect covering capability of the light emergent light are improved.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. The utility model provides a combination site structure, is including setting up in bellying (1) and first depressed part (4) of the dot face (16) of light guide plate, its characterized in that: the convex portion (1) comprises a first convex portion (2), the first concave portion (4) is arranged along the edge circumference of the first convex portion (2), the first convex portion (2) protrudes towards the outside of the light guide plate, the first concave portion (4) comprises a first surface (401) and a second surface (402), the first surface (401) is used for reflecting light outside the first convex portion (2), the second surface (402) is used for reflecting light inside the first convex portion (2), one side of the first surface (401) and the second surface (402) is connected with the mesh point surface (16) in a superposition mode, the first surface (401) and the second surface (402) are arranged from the mesh point surface (16) of the light guide plate to the second connecting edge in an inclined mode towards the inside of the light guide plate, the convex portion (1) further comprises at least three second convex portions (3), the at least three second convex portions (3) are connected to the mesh point surface (16) of the light guide plate, the at least three second convex portions (3) are located between the first convex portions (4), the second convex portions (3) and the at least three convex portions (3) are arranged along the circumference direction, and the second convex portions (501) are arranged between the first convex portions (2), and the second convex portions (3), and the at least three convex portions (5) are arranged between the second convex portions (3), and the second convex portions (501) and the third convex portions (2), and the third convex portions (501) are arranged along the circumference direction, A fourth surface (502) and a fifth surface (503), the fifth surface (503) is located between the third surface (501) and the fourth surface (502), the outer edge of the orthographic projection surface (12) of the third surface (501) coincides with the inner edge of the orthographic projection surface of the second protrusion (3), the inner edge of the orthographic projection surface of the fourth surface (502) coincides with the edge of the orthographic projection surface of the first protrusion (2), the second recess (5) is arranged along the circumferential direction of the first protrusion (2), and the second recess (5) at the moment is an annular groove.
2. A composite dot structure according to claim 1, wherein: the angle formed by connecting two opposite side edges of the first surface (401) and the second surface (402) ranges from 5 degrees to 20 degrees.
3. A composite dot structure according to claim 1, wherein: the included angle between the first surface (401) and the mesh point surface (16) of the light guide plate is larger than the included angle between the second surface (402) and the mesh point surface (16) of the light guide plate.
4. A composite dot structure according to claim 1, wherein: the depth of the second recess (5) is higher than the depth of the first recess (4).
5. A composite dot structure according to claim 4, wherein: the height of the second protruding portion (3) is higher than that of the first protruding portion (2).
6. A composite dot structure according to claim 1, wherein: the first surface (401) is in circular arc transition from one side superposed with the mesh point surface (16) of the light guide plate to the second surface (402), and gradually protrudes towards one end close to the interior of the light guide plate.
7. The utility model provides a light guide plate, includes light guide plate body (15), and this two relative surfaces of light guide plate are provided with play plain noodles (17) and mesh face (16) respectively, the one end of light guide plate body (15) is light source incident end, its characterized in that: the screen dot surface (16) is provided with a plurality of combined screen dot structures (19) as set forth in any one of claims 1 to 6, the diameter range of the combined screen dot structures (19) is 100um-300um, the distance between two adjacent combined screen dot structures is reduced along with the increase of the screen dot density along the direction of a parallel light source from the light source incidence end, the light-emitting surface (17) is provided with a plurality of light-emitting grooves (18), and the light-emitting grooves (18) are used for refracting light to emit light.
8. The light guide plate according to claim 7, wherein: the light emergent cutting groove (18) is a V-shaped groove.
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| CN202111585345.4A CN114236669B (en) | 2021-12-22 | 2021-12-22 | Combined mesh point structure and light guide plate |
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| CN202111585345.4A CN114236669B (en) | 2021-12-22 | 2021-12-22 | Combined mesh point structure and light guide plate |
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| CN114236669A CN114236669A (en) | 2022-03-25 |
| CN114236669B true CN114236669B (en) | 2023-03-10 |
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