CN215526304U - Lamp panel, backlight module and display device - Google Patents
Lamp panel, backlight module and display device Download PDFInfo
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- CN215526304U CN215526304U CN202122363108.5U CN202122363108U CN215526304U CN 215526304 U CN215526304 U CN 215526304U CN 202122363108 U CN202122363108 U CN 202122363108U CN 215526304 U CN215526304 U CN 215526304U
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Abstract
The utility model provides a lamp panel, a backlight module and a display device, wherein the lamp panel comprises a plurality of light-emitting pieces; the light-emitting pieces are arranged on the plate body at intervals; the side face, provided with the light-emitting piece, of the plate body is coated with a reflecting layer, and the reflecting layer is used for reflecting light rays emitted by the light-emitting piece; the reflecting layer is provided with a plurality of avoidance areas, the light-emitting piece protrudes out of the reflecting layer through the avoidance areas, and a gap is formed between the outer wall surface of the light-emitting piece and the inner wall surface of the avoidance areas; the reflecting layer comprises a plurality of sub reflecting layers, the sub reflecting layers are formed by curing reflecting ink, and the sub reflecting layers are stacked. The lamp panel provided by the utility model is low in manufacturing cost and easy to assemble and mold.
Description
Technical Field
The utility model relates to the technical field of display, in particular to a lamp panel, a backlight module and display equipment.
Background
With the development of display technology, liquid crystal display technology is widely used in the display field. The liquid crystal display panel does not emit light, and the lamp panel in the backlight module is used as a light source to provide the brightness required by the display equipment.
The lamp panel includes plate body, light-emitting spare and reflector plate. The illuminating part is a plurality of, and the interval array sets up on the plate body, and the reflector plate subsides are established on the side of plate body that sets up the illuminating part, and the illuminating part during operation sends light, and the reflecting part can be with the light that the illuminating part sent towards display device's front side reflection.
Wherein, the reflecting sheet is provided with an opening for the luminous piece to pass through. Because the number of the luminous elements is large, the number of the openings on the reflector is large, and the manufacturing cost is high.
SUMMERY OF THE UTILITY MODEL
In view of the above problems, embodiments of the present invention provide a lamp panel, a backlight module and a display device, where the lamp panel is low in manufacturing cost and easy to assemble and mold.
In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:
a first aspect of an embodiment of the present invention provides a lamp panel applied to a display device, where the lamp panel includes:
and a plurality of light emitting members as a light source for emitting light.
The light-emitting pieces are arranged on the plate body at intervals; the side face, provided with the light-emitting piece, of the plate body is coated with a reflecting layer, and the reflecting layer is used for reflecting light rays emitted by the light-emitting piece; the reflecting layer is provided with a plurality of avoidance areas, the light-emitting piece protrudes out of the reflecting layer through the avoidance areas, and a gap is formed between the outer wall surface of the light-emitting piece and the inner wall surface of the avoidance areas;
the reflecting layer comprises a plurality of sub reflecting layers, the sub reflecting layers are formed by curing reflecting ink, and the sub reflecting layers are stacked.
Therefore, the reflection layer can be formed on the plate body by spraying the reflection ink on the plate body, and the reflection layer is used for reflecting light, is easy to form and has lower manufacturing cost. And since the reflective layer includes a plurality of sub-reflective layers stacked, the reflectivity of the reflective layer is high.
In some embodiments, the radial dimension that is close to in the dodging region plate body one end is less than dodging regional keeping away from the radial dimension of plate body one end avoids lamp plate assembly in-process illuminating part and reflection stratum to take place to interfere, leads to situations such as illuminating part rosin joint to appear.
In some embodiments, the plurality of sub-reflective layers includes a first sub-reflective layer coated on the plate body and a second sub-reflective layer coated on a surface of the first sub-reflective layer; the first sub-reflecting layer is provided with a first avoidance area, the second sub-reflecting layer is provided with a second avoidance area, and the radial size of the second avoidance area is larger than that of the first avoidance area.
Therefore, the preset reflectivity can be achieved through a small number of sub-reflecting layers, and the manufacturing cost is reduced.
In some embodiments, the first avoidance area and the second avoidance area are arranged at the same position relative to the surface of the plate body, so that the structure is simple and the forming is easy.
In some embodiments, the side of the plate body facing away from the light emitting member has a wire; the side of the plate body that deviates from the illuminating part is equipped with and hinders and welds the printing ink layer, hinder and weld the printing ink layer and cover the wire to avoid situations such as the wire collision, corruption to appear.
A second aspect of the embodiments of the present invention provides a backlight module applied to a display device, where the backlight module includes: a back plate; for support and protection.
A lamp panel assembly, wherein the lamp panel assembly comprises the lamp panel of the first aspect, and a plurality of lamp panels are arranged in parallel on the front side of the backboard; a reflector; the reflector comprises a first reflection part and a second reflection part, the first reflection part is arranged between the two adjacent lamp panels, and the second reflection part is arranged on the outer side of the circumferential direction of the lamp panel assembly to avoid light leakage at the splicing seam position between the two adjacent lamp panels and the edge position of the circumferential direction of the lamp panel assembly.
In some embodiments, the reflector is a reflector plate, and the structure is simple.
And/or the reflecting piece is a reflecting coating, the reflecting coating comprises a plurality of sub-reflecting coatings, the sub-reflecting coatings are formed by curing reflecting ink, and the plurality of sub-reflecting coatings are stacked and easy to form.
In some embodiments, a light leakage structure is disposed on the second reflection portion for reducing the intensity of light reflected toward the front side of the back plate, so as to avoid uneven brightness of the display screen of the display device.
In some embodiments, when the reflector is a reflector plate, the light leakage structure is a through hole penetrating through the reflector plate, and the structure is simple.
In some embodiments, when the reflector is a reflective coating formed by curing the reflective ink, the light leakage structure is a recessed portion formed on the reflective coating, the recessed portion is open, and the recessed depth of the recessed portion is smaller than the thickness of the reflective coating, so that the reflector is easy to mold.
In some embodiments, the backlight module comprises a threaded fastener, the lamp panel is connected with the back plate through the threaded fastener, and the fixing stability of the lamp panel is high.
The reflector includes third reflection part, the third reflection part covers exposure of threaded fastener is in on the part of lamp plate front side, avoid the display screen to appear bright dark inhomogeneous situation.
A third aspect of the embodiments of the present invention provides a display device, which includes the backlight module according to the second aspect.
In addition to the technical problems solved by the embodiments of the present invention, the technical features constituting the technical solutions, and the advantages brought by the technical features of the technical solutions, other technical problems that can be solved by the lamp panel, the backlight module, and the display device provided by the embodiments of the present invention, other technical features included in the technical solutions, and advantages brought by the technical features will be further described in detail in the detailed description.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a display device provided in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a lamp panel of the display device in fig. 1;
fig. 3 is a schematic view of a forming process of a lamp panel according to an embodiment of the present invention;
FIG. 4 is a first diagram illustrating reflected light rays of the reflective layer of FIG. 2;
FIG. 5 is a second schematic view of the reflected light rays of the reflective layer in FIG. 2;
FIG. 6 is a schematic structural diagram of the backlight module shown in FIG. 1;
FIG. 7 is a schematic structural view of portion A of FIG. 6;
FIG. 8 is another schematic view of the backlight module shown in FIG. 6.
Reference numerals:
10: a lamp panel;
11: a light emitting member;
12: a plate body;
13: a reflective layer;
131: a sub-reflective layer; 1311: an avoidance area;
13 a: a first sub-reflective layer; 13a 1: a first avoidance region; 13 b: a second sub-reflective layer; 13b 1: a second avoidance region;
20: a backlight module; 21: a back plate; 22: a reflector; 221: a first reflection section; 222: a second reflection section; 23: a diffusion plate; 24: a quantum film; 25: an optical film;
30: a display screen;
40: a circuit board;
50: a power connection;
60: a rear housing;
70: a support structure.
Detailed Description
In order to make the aforementioned objects, features and advantages of the embodiments of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. It is to be understood that the described embodiments are merely a few embodiments of the utility model, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Among the correlation technique, the lamp plate includes the plate body and sets up reflector plate and a plurality of illuminating part on the plate body, and the reflector plate is used for reflecting the light that the illuminating part sent, is provided with the through-hole of dodging the illuminating part on the reflector plate. The Light Emitting element can be a sub-millimeter Light Emitting Diode (Mini LED) or a Micro-Light Emitting Diode (Micro LED). The chip size of the Mini LED is about 50-200 μm, and the chip size of the Micro LED is usually smaller than that of the Mini LED. Compared with the traditional LED lamp panel, the lamp panel using the Mini LED or the Micro LED can adopt more dense chip arrangement to reduce the light mixing distance, and the ultra-thinning of the display equipment is realized.
Wherein, when the quantity of luminous piece became many on the lamp plate, the also corresponding grow of through-hole quantity on the reflector plate, and the radial size of through-hole diminishes, the reflector plate preparation degree of difficulty grow, and the cost of manufacture is higher.
In view of this, in the embodiment of the application, the light emitted by the light emitting element is reflected by coating the reflective layer on the board body, so that the manufacturing cost of the lamp panel is reduced.
Referring to fig. 1 to 5, the present embodiment provides a lamp panel 10 applied to a display device, where the display device has a display screen 30, and the display screen 30 is used for displaying image information such as images and characters.
The display screen 30 may be a liquid crystal display screen which does not emit light, wherein the lamp panel 10 may serve as a backlight source to illuminate the liquid crystal display screen.
The display device has a day side, a ground side, a left side, a right side, a front side, and a back side. Specifically, when the user uses the display device, the user faces the display screen 30 of the display device, at this time, the left side of the user is the left side of the display device, the right side of the user is the right side of the display device, the side of the display device facing the user is the front side of the display device, and the side of the display device facing away from the user is the rear side of the display device.
In some embodiments, the display device further includes a lamp panel 10 and a backlight module 20, the lamp panel 10 is used for generating light, and the backlight module 20 includes a back plate 21, a diffusion plate 23, a quantum film 24, an optical film 25, and the like.
The back plate 21 has a supporting and bearing function, and the lamp panel 10, the diffusion plate 23, the quantum film 24, the optical film 25 and the display screen 30 are all fixed on the back plate 21.
The lamp panel 10 is located the front side of backplate 21, and diffuser plate 23 sets up the front side at lamp panel 10 for turn into the area light source with the pointolite. The diffusion plate 23 may be made of Polyethylene terephthalate (PET).
The quantum film 24 includes a red quantum dot material and a green quantum dot material, the red quantum dot material can generate red light under the excitation of blue light, and the green quantum dot material can generate green light under the excitation of blue light, thereby generating red, green, and blue lights, and making the emergent light of the lamp panel 10 be white light.
An optical film 25 is disposed on the front side of the quantum film 24 for brightening the light. The optical film 25 may include at least one of a prism film and a brightness enhancement film. The display screen 30 is disposed on the front side of the optical film 25 and receives light emitted from the light-emitting side of the optical film 25.
In some embodiments, the display device further comprises a circuit board 40, a power connector 50, and the like, the circuit board 40 and the power connector 50 are generally connected to the rear side of the back panel, the circuit board 40 is used for controlling the operation of the display device, and the circuit board 40 is used for connecting with a power source to supply power to the display device.
In some embodiments, the display device further includes a rear case 60, and the rear case 60 is attached to the rear side of the rear panel such that the circuit board 40, the power connector 50, and the like are hidden between the rear case 60 and the rear panel and form a shield for the circuit board 40, the power connector 50, and the like.
In some embodiments, the display device further includes a support structure 70, the support structure 70 being coupled to the back plate or rear housing 60 for supporting the display device at a desktop or the like or for hanging the display device at a wall or the like.
In some embodiments, the light panel 10 includes a plurality of light emitting members 11 as a backlight source for emitting light.
In some embodiments, the light emitting element 11 may be an LED chip, or may be an LED packaged by a silicon gel or an epoxy gel. The number of the light emitting members 11 may be limited according to the size of the display apparatus, etc.
In some embodiments, the light panel 10 further includes a board body 12, and the plurality of light emitting members 11 are disposed on the board body 12. Wherein the luminous member 11 is disposed at the front side of the plate body 12. The plate body 12 may be an aluminum substrate, a glass fiber plate, a glass plate, or the like.
The side of the board body 12 where the light emitting member 11 is disposed is provided with an electrical connection wire (not shown), which may be a wire coated on the board body 12. The light emitting member 11 can be fixed on the board 12 by welding and electrically connected to the electrical connection wire, and the other end of the electrical connection wire is connected to a power supply through a conductive adhesive or the like to supply power to the light emitting member 11.
In some embodiments, the light emitting members 11 are spaced apart, and the distance between two adjacent light emitting members 11 is not limited in this embodiment.
The arrangement of the light emitting members 11 may be set as required, for example, the light emitting members 11 are arranged in a longitudinal and transverse direction.
In some embodiments, the side of the board body 12 where the light emitting members 11 are disposed is coated with a reflective layer 13, and the reflective layer 13 is used for performing diffuse reflection on the light emitted from the light emitting members 11, so that the light emitted from the light emitting members 11 is emitted toward the front side of the display device and uniformly illuminates the display screen 30.
In some embodiments, the reflective layer 13 is provided with a plurality of avoiding regions 1311, and the light emitting members 11 protrude from the reflective layer 13 through the avoiding regions 1311, so that light emitted from the light emitting members 11 can be emitted toward the front side of the reflective layer 13.
In some embodiments, referring to fig. 3, when the lamp panel 10 is assembled, the reflective layer 13 may be first coated on the board body 12; in the process of coating the reflective layer 13, the position of the avoiding region 1311 can be shielded, so that after the reflective layer 13 is formed, the electrical connection wire at the position of the avoiding region 1311 can be exposed. Then, the light emitting members 11 are fixed to the plate body 12 by welding.
To avoid cold joint of the light emitting member 11, in some embodiments, a gap is formed between an outer wall surface of the light emitting member 11 and an inner wall surface of the avoiding region 1311. Thus, when the light emitting material 11 is welded, the outer wall surface of the light emitting material 11 does not interfere with the inner wall surface of the escape region 1311, and the light emitting material 11 is easily welded. Meanwhile, damage to the reflecting layer 13 in the welding process can be avoided.
The distance between the outer wall surface of the light-emitting element 11 and the inner wall surface of the escape region 1311 may be set as required, and is, for example, greater than 10 μm.
In some embodiments, the reflective layer 13 includes a plurality of sub-reflective layers 131, the sub-reflective layers 131 are formed by curing reflective ink, and the plurality of sub-reflective layers 131 are stacked.
The reflective ink can contain white pigment particles of titanium dioxide or barium sulfate, the particle size of the pigment particles can be 0.2-1.5um, and light rays with different colors are reflected by the concave spherical reflection principle. Due to the random distribution of the submicron pigment particles, different particles may reflect light in different directions, i.e. the reflective layer 13 may diffuse light.
The color of the reflective ink may be green, white, red, black. In some embodiments, the reflective ink is white to reduce light loss and increase the reflectivity of the sub-reflective layer 131.
When the number of the sub-reflective layers 131 is one, the reflectivity of the sub-reflective layers 131 may be 85% to 87%. The reflection efficiency of the diffuse reflection increases as the thickness of the sub-reflective layer 131 increases. As shown in fig. 1 to 5, the plurality of sub-reflective layers 131 are stacked, and the thickness of the reflective layer 13 is increased, the number of sub-micron pigment particles is increased, the absorption of light by the reflective layer 13 is decreased, and the reflectance of the reflective layer 13 is increased. At this time, after the sub-reflective layer 131 is cured and molded, reflective ink may be coated on the cured and molded sub-reflective layer 131 again and cured and molded. By providing the multi-sub reflective layer 131, the reflectivity of the reflective layer 13 may be greater than 92%.
Thus, by coating the reflective ink on the board body 12, the electrical connection lines on the board body 12 can be protected, and the situation that the electrical connection lines are damaged by collision or are corroded and short-circuited is avoided. The reflective layer 13 has a high reflectivity, and can diffuse light to uniformly illuminate the display screen 30; and for the shaping mode at the reflector plate trompil, the shaping mode of reflection stratum 13 is comparatively simple, and the cost of manufacture of lamp plate 10 is lower.
In some embodiments, the avoidance region 1311 can be a cylindrical bore, i.e., the cross-sectional dimension of the avoidance region 1311 is the same throughout.
In some embodiments, referring to fig. 4, a radial dimension of the avoiding region 1311 near one end of the plate body 12 is smaller than a radial dimension of the avoiding region 1311 far from one end of the plate body 12, that is, the avoiding region 1311 is an approximately conical hole, a small-caliber end of the avoiding region 1311 is connected to the plate body 12, and a large-caliber end of the avoiding region 1311 is an open end.
When the lamp panel 10 is assembled, the light emitting element 11 can extend into the avoiding region 1311 through the large-caliber end of the avoiding region 1311, and is connected with the plate body 12 in a welding manner. Due to the fact that the aperture of the opening end of the avoiding region 1311 is large, the situation that the welding end of the light-emitting piece 11 cannot be in full contact with the plate body 12 and the light-emitting piece 11 is in false welding and the like due to interference between the light-emitting piece 11 and the reflecting layer 13 in the assembling process of the lamp panel 10 can be avoided.
In some embodiments, referring to fig. 4 and 5, when the lamp panel 10 works, a part of the light emitted from the light emitting element 11 can be directly emitted toward the front side of the display device. Part of the light emitted by the light-emitting member 11 is emitted toward the sidewall surface of the avoiding region 1311, and at this time, the part of the light is reflected by the sidewall surface of the avoiding region 1311 and then emitted through the open end of the avoiding region 1311, so that the light loss of the light-emitting member 11 is small.
It will be appreciated that the height of the LED may be 200 μm to 500 μm, and that the height of the Mini LED may be 90 μm to 120 μm. The thickness of the sub-reflective layer 131 may be 20 μm to 25 μm, and in order to prevent the reflective layer 13 from shielding the light emitting member 11, the thickness of the reflective layer 13 may be less than half of the height of the light emitting member 11. That is, the number of layers of the sub-reflective layer 131 may be two or three.
Taking the number of the sub-reflective layers 131 as two as an example, in some embodiments, the plurality of sub-reflective layers 131 includes the first sub-reflective layer 13a and the second sub-reflective layer 13b, that is, a predetermined reflectivity can be achieved by using a smaller number of sub-reflective layers 131, and the manufacturing cost of the lamp panel 10 is lower.
Referring to fig. 3, the first sub-reflective layer 13a is coated on the board body 12, and the first sub-reflective layer 13a is provided with a first avoidance region 13a 1. That is, in the process of forming the lamp panel 10, the reflective ink may be coated on the panel body 12, and the partial reflective ink is dried, so as to cure and form the first sub-reflective layer 13 a. The position of the first avoidance region 13a1 can be shielded, so that in the process of forming the first sub-reflection layer 13a, the position of the first avoidance region 13a1 is not coated with reflective ink, and the electrical connection wire is exposed in the first avoidance region 13a 1.
The second sub-reflecting layer 13b is coated on the surface of the first sub-reflecting layer 13 a; the second sub reflection layer 13b is provided with a second avoidance region 13b1, and the radial dimension of the second avoidance region 13b1 is larger than the radial dimension of the first avoidance region 13a 1.
After the first sub-reflecting layer 13a is cured and molded, the reflective ink is continuously coated on the surface of the first sub-reflecting layer 13a, and the ink is dried, so that the second sub-reflecting layer 13b is cured and molded. The position of the second avoidance region 13b1 can be shielded, so that the position of the second avoidance region 13b1 is not coated with the reflective ink in the process of forming the second sub-reflective layer 13 b.
In some embodiments, when the sub reflection layer 131 includes a third sub reflection layer, a radial dimension of a third avoidance region on the third sub reflection layer may be less than or equal to a radial dimension of the second avoidance region 13b 1.
In some embodiments, the first bypass region 13a1 and the second bypass region 13b1 can be the same shape, for example, the first bypass region 13a1 and the second bypass region 13b1 are both circular holes, or the first bypass region 13a1 and the second bypass region 13b1 are both rectangular holes.
In some embodiments, the center lines of the first avoidance region 13a1 and the second avoidance region 13b1 may be arranged in a staggered manner, or the first avoidance region 13a1 and the second avoidance region 13b1 are arranged at the same position relative to the surface of the board body 12, so as to simplify the shape of the avoidance region 1311 and reduce the manufacturing cost. At this time, the relief region 1311 is a tapered hole having an approximately step shape.
In some embodiments, the gap between the inner wall surface of the first escape area 13a1 and the outer wall surface of the light emitting member 11 may be 10 μm to 20 μm. The difference in radial dimension between the first bypass region 13a1 and the second bypass region 13b1 can be 0.5mm to 1 mm.
In some embodiments, the side of the board body 12 facing away from the light emitting element 11 (i.e. the rear side of the board body 12) has a conducting wire, which may be a copper wire, i.e. electrical connecting wires are provided on both sides of the board body 12.
For avoiding the situation such as collision, corruption appear in the electric connecting wire of plate body 12 trailing flank, the side that deviates from illuminating part 11 of plate body 12 is equipped with hinders and welds the printing ink layer, hinders and welds printing ink layer cover wire to form the protection to the electric connecting wire, improve the life of lamp plate 10.
The color of the solder resist ink can be white, green, red or black, etc.
In some embodiments, when the board body 12 is a glass board, part of the light may pass through the board body 12, and at this time, the color of the solder resist ink layer may be white, and the white solder resist ink may be disposed to reflect part of the light passing through the board body 12 toward the front side of the display device, so as to improve the utilization rate of the light.
Referring to fig. 6 to 8, the present embodiment provides a backlight module 20 applied to a display device, where the backlight module 20 includes a back plate 21, a diffuser plate 23, a quantum film 24, an optical film 25, and the like, which have already been described in the above embodiments, and are not repeated in this embodiment.
In some embodiments, the backlight module 20 further includes a lamp panel assembly, the lamp panel assembly includes a plurality of lamp panels 10, and the plurality of lamp panels 10 are disposed in parallel on the front side of the back plate 21. The structure, function and working principle of the lamp panel 10 have been described in the above embodiments, and are not described in detail in this embodiment.
The plurality of lamp plates 10 can be arranged in the longitudinal and transverse directions, wherein the backlight module comprises a threaded fastener, and each lamp plate 10 can be connected with the back plate 21 through the threaded fastener so that the lamp plates 10 are stably connected to the lamp plates.
In some embodiments, the backlight assembly 20 further includes a reflector 22; the reflector 22 includes a first reflection portion 221, and the first reflection portion 221 is disposed between two adjacent lamp panels 10 to prevent light leakage at the splicing position of the two adjacent lamp panels 10. Because the size of backplate 21 is greater than the distribution size of lamp plate assembly, reflector 22 includes second reflection portion 222, and second reflection portion 222 sets up the outside in lamp plate assembly's circumference to the light leak appears in the outside edge of avoiding lamp plate assembly's circumference.
Locating holes can be formed between the lamp panel 10 and the diffusion plate 23 and between the lamp panel 10 and the back plate 21, and are used for locating the lamp panel 10 and the diffusion plate 23. In some embodiments, the reflector 22 may further include a third reflective portion, and the third reflective portion covers the positioning hole and the portion of the threaded fastener exposed on the front side of the lamp panel, so as to avoid a situation that the brightness of the display screen 30 is uneven due to the decrease of the reflectivity of the positioning hole and the threaded fastener.
In some embodiments, the reflector 22 is a reflective sheet, which may be made of polyethylene terephthalate (PET), and has a white reflective surface for emitting light toward the front side of the display device.
Wherein, when the reflector plate sets up concatenation position department between two adjacent lamp plates 10, the reflector plate is the strip, and the reflector plate can be fixed on reflector layer 13 through bonding piece subsides dress.
When the reflector plate is arranged on the outer side of the circumference of the lamp panel assembly, the reflector plate can be annular, the inner side edge of the reflector plate is attached to the reflecting layer 13 of the lamp panel 10, and the outer side edge of the reflector plate is attached to the back plate 21. Of course, the reflective sheet may be in the form of a strip and spliced into a ring.
In some embodiments, the reflector 22 is a reflective coating comprising a plurality of sub-reflective coatings formed by curing reflective ink, the plurality of sub-reflective coatings being disposed in a stack. The reflective coating is formed by a process similar to that of the reflective layer 13, and the predetermined reflectivity is achieved by sequentially curing and forming a plurality of layers of ink.
Wherein, when the reflective coating setting splice position department between two adjacent lamp plates 10, the splice seam position department at two lamp plates 10 is filled at least to the reflective coating. Of course, the distribution area of the reflective coating may be larger than the area of the splice seam, in which case the reflective coating is applied on the reflective layer 13.
When the reflective coating sets up in the outside of lamp plate assembly's circumference, reflective coating and 13 concatenations of reflective coating or reflective coating part coating are on reflective coating 13 to avoid appearing the light leak clearance between reflective coating and the reflective coating 13, lead to display screen 30 to be bright dark inhomogeneous.
In some embodiments, the reflector 22 may include both a reflective sheet and a reflective coating. Exemplarily, the reflector plate sets up in the concatenation position department of two adjacent lamp plates 10, and the reflective coating sets up in the outside of lamp plate assembly's circumference.
In some embodiments, the back plate 21 includes a back plate body and a folded edge disposed at an edge of the back plate body, and the second reflective portion 222 is disposed on both the back plate body and the folded edge (as shown in fig. 7), resulting in a side of the display screen 30 having a greater brightness relative to other positions of the display screen 30, i.e., uneven brightness at different positions of the display screen 30.
Accordingly, a light leakage structure (not shown) is disposed on the second reflection portion 222 for reducing the intensity of the light reflected toward the front side of the back plate 21, so as to reduce the brightness at the side position of the display screen 30 and avoid the uneven brightness of the display screen 30. Wherein the light leakage structure is generally disposed at a middle position of the folded edge.
In some embodiments, when the reflector 22 is a reflector, the light leakage structure is a through hole penetrating through the reflector, and the through hole may be a circular hole, a strip-shaped hole, or the like, and the structure is relatively simple. The aperture of the through holes and the number of the through holes can be set according to the requirement.
In some embodiments, when the reflective member 22 is a reflective coating formed by curing reflective ink, the light leakage structure is a recess formed on the reflective coating, the recess is open, and the recess depth of the recess is less than the thickness of the reflective coating, so that the reflective member is easy to mold.
Illustratively, when the reflective coatings include a first sub-reflective coating and a second sub-reflective coating, the recesses are formed on the second sub-reflective coating (as shown in fig. 5) to reduce the brightness at the side positions of the display screen 30 by reducing the reflectivity of the reflective coatings at the positions of the recesses.
The cross section shape of depressed part can be circular port, bar hole etc. and the structure is comparatively simple. The number of the hole diameter of the concave part and the number of the concave parts can be set according to the requirement.
The present embodiment provides a display device, which includes the backlight module 20. The structure, function and operation principle of the backlight module 20 have been described in the above embodiments, and are not described in detail in this embodiment. By adopting the backlight module 20, the manufacturing cost of the display device can be reduced.
The embodiments or implementation modes in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other.
In the description of the present specification, reference to the description of the terms "one embodiment", "some embodiments", "an illustrative embodiment", "an example", "a specific example", or "some examples", etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a lamp plate, is applied to display device, its characterized in that, the lamp plate includes:
a plurality of light emitting members;
the light-emitting pieces are arranged on the plate body at intervals; the side face, provided with the light-emitting piece, of the plate body is coated with a reflecting layer, and the reflecting layer is used for reflecting light rays emitted by the light-emitting piece; the reflecting layer is provided with a plurality of avoidance areas, the light-emitting piece protrudes out of the reflecting layer through the avoidance areas, and a gap is formed between the outer wall surface of the light-emitting piece and the inner wall surface of the avoidance areas;
the reflecting layer comprises a plurality of sub reflecting layers, the sub reflecting layers are formed by curing reflecting ink, and the sub reflecting layers are stacked.
2. The lamp panel of claim 1, wherein a radial dimension of the avoidance region near one end of the panel body is smaller than a radial dimension of the avoidance region far away from one end of the panel body.
3. The lamp panel of claim 1 or 2, wherein the plurality of sub-reflective layers include a first sub-reflective layer and a second sub-reflective layer, the first sub-reflective layer is coated on the panel body, and the second sub-reflective layer is coated on the surface of the first sub-reflective layer;
the first sub-reflecting layer is provided with a first avoidance area, the second sub-reflecting layer is provided with a second avoidance area, and the radial size of the second avoidance area is larger than that of the first avoidance area.
4. The lamp panel of claim 3, wherein the first avoidance area and the second avoidance area are disposed at the same position relative to the surface of the panel body.
5. The lamp panel according to claim 1 or 2, wherein a side of the panel body facing away from the light emitting member has a wire;
the side face of the plate body, which deviates from the luminescent piece, is provided with a solder resist ink layer, and the solder resist ink layer covers the wire.
6. The utility model provides a backlight unit, is applied to display device which characterized in that, backlight unit includes:
a back plate;
a reflector;
a lamp panel assembly comprising a plurality of lamp panels according to any one of claims 1 to 5, the plurality of lamp panels being arranged in parallel on the front side of the backplane;
the reflection piece includes first reflection portion and second reflection portion, first reflection portion sets up adjacent two between the lamp plate, second reflection portion sets up the outside of lamp plate assembly's circumference.
7. The backlight module according to claim 6,
the reflecting piece is a reflecting sheet;
and/or the reflecting piece is a reflecting coating, the reflecting coating comprises a plurality of sub-reflecting coatings, the sub-reflecting coatings are formed by curing reflecting ink, and the plurality of sub-reflecting coatings are stacked.
8. The backlight module as claimed in claim 7, wherein the second reflective portion has a light leakage structure for reducing the intensity of light reflected toward the front side of the back plate;
when the reflector is a reflector plate, the light leakage structure is a through hole penetrating through the reflector plate;
when the reflection piece is a reflection coating formed by curing the reflection ink, the light leakage structure is a concave part formed on the reflection coating, the concave part is open, and the concave depth of the concave part is smaller than the thickness of the reflection coating.
9. The backlight module according to claim 6, wherein the backlight module comprises a threaded fastener, and the lamp panel is connected with the back plate through the threaded fastener;
the reflector comprises a third reflecting part, and the third reflecting part covers the part of the threaded fastener exposed on the front side of the lamp panel.
10. A display device comprising a backlight module according to any one of claims 6-8.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122363108.5U CN215526304U (en) | 2021-09-28 | 2021-09-28 | Lamp panel, backlight module and display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122363108.5U CN215526304U (en) | 2021-09-28 | 2021-09-28 | Lamp panel, backlight module and display device |
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| CN215526304U true CN215526304U (en) | 2022-01-14 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023184410A1 (en) * | 2022-03-31 | 2023-10-05 | 京东方科技集团股份有限公司 | Circuit board, electronic apparatus and manufacturing method for circuit board |
| CN117008377A (en) * | 2023-10-08 | 2023-11-07 | 合肥泰沃达智能装备有限公司 | Direct type backlight source with zero light mixing distance and display equipment using direct type backlight source |
-
2021
- 2021-09-28 CN CN202122363108.5U patent/CN215526304U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023184410A1 (en) * | 2022-03-31 | 2023-10-05 | 京东方科技集团股份有限公司 | Circuit board, electronic apparatus and manufacturing method for circuit board |
| CN117008377A (en) * | 2023-10-08 | 2023-11-07 | 合肥泰沃达智能装备有限公司 | Direct type backlight source with zero light mixing distance and display equipment using direct type backlight source |
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