CN210378165U - Lamp panel, backlight module and display device - Google Patents

Abstract

The utility model is suitable for a display device technical field provides a lamp plate, backlight unit and display device, and this lamp plate includes the lamp strip, installs a plurality of lamp pearls and reflector plate on the lamp strip, has seted up a plurality of through-holes on the reflector plate; the lamp strip is characterized by further comprising black silk screen printing for partially absorbing light rays emitted by the lamp beads, wherein the black silk screen printing is arranged on the lamp strip and positioned on two sides of each lamp bead respectively, and each black silk screen printing is positioned in the corresponding through hole. Compared with the prior art, the utility model discloses a both sides that just are located each lamp pearl on the lamp strip are provided with black silk screen printing respectively, and black silk screen printing can absorb the light part that each lamp pearl sent to can effectively reduce the intensity of the light coincidence part of two adjacent lamp pearls, and then improve the even uniformity of backlight unit light-emitting, improve display device's display effect. The backlight module is provided with the lens body by covering each lamp bead, so that the light irradiation area of each lamp bead can be increased, the number of the lamp beads can be reduced, and the cost of the display device is low.

Description

Lamp panel, backlight module and display device

Technical Field

The utility model belongs to the technical field of display device, more specifically say, relate to a lamp plate, backlight unit and display device.

Background

At present, in straight following formula backlight unit, the lamp plate includes the lamp strip and installs a plurality of lamp pearls on the lamp strip for display device provides sufficient illumination. In order to reduce the using quantity of the lamp beads, the illumination intensity of the lamp beads can be improved by increasing the luminous power of the lamp beads. However, the increase of the illumination intensity of the lamp beads inevitably affects the uniformity of light, namely, a part of light superposition exists between two adjacent lamp beads, the light intensity of the part is stronger than that of other areas, and the light is brighter, so that the display effect of the display device is affected.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a lamp plate to the luminance increase of the lamp pearl that exists among the solution prior art leads to the even uniformity of light poor, the poor problem of display device's display effect.

In order to achieve the above object, the utility model adopts the following technical scheme: the lamp panel comprises a lamp strip, a plurality of lamp beads arranged on the lamp strip and a reflector plate used for reflecting light rays emitted by the lamp beads, wherein a plurality of through holes for the corresponding lamp beads to pass through are formed in the reflector plate; the lamp panel still including be used for the part to absorb each the black silk screen printing of the light that the lamp pearl sent, on the lamp strip and be located each the both sides of lamp pearl are equipped with respectively black silk screen printing, each black silk screen printing is located correspondingly in the through-hole.

Another object of the present invention is to provide a backlight module, which comprises a plurality of the above-mentioned lamp panels, a substrate for supporting each of the lamp panels, and a lens body for refracting light emitted from each of the lamp beads; each the lamp plate is installed at equidistant on the base plate, each lens body cover is located correspondingly on the lamp pearl.

Furthermore, a plurality of mounting guide pillars are mounted on the side surface of each lens body facing the corresponding light bar, and a blind hole for each mounting guide pillar to extend into is correspondingly formed in each light bar; and each lens body is fixedly bonded on the corresponding lamp strip.

Furthermore, the reflector plate comprises a first plate arranged on the side surface of the substrate provided with the lamp beads, and the first plate is provided with the through hole for the corresponding lens body to extend out.

Furthermore, the reflector plate further comprises two second plates for reflecting light rays emitted by the lamp beads, the two second plates are respectively arranged at two ends of the first plate, the two second plates and the first plate are obliquely arranged, and the two second plates are symmetrically distributed with the central axis of the first plate.

Further, the included angle between each second sheet and the first sheet is equal, and the included angle between each second sheet and the first sheet ranges from 30 degrees to 60 degrees.

Furthermore, the reflector plate further comprises two third plates for reflecting light rays emitted by the lamp beads, the two third plates are respectively arranged at two ends of the first plate and are positioned between the two second plates, two ends of each third plate are respectively connected with the two second plates, the two third plates and the first plate are obliquely arranged, and the two second plates are symmetrically distributed along the central axis of the first plate.

Further, the included angle between each third sheet and the first sheet is equal, and the included angle between each third sheet and the first sheet ranges from 30 degrees to 60 degrees.

Furthermore, the backlight module further comprises a diffusion plate for diffusing light, the diffusion plate is respectively connected with the second plates and the third plates, the diffusion plate, the two second plates, the two third plates and the substrate enclose an accommodating space, and the diffusion plate is parallel to the substrate.

It is another object of the present invention to provide a display device, which includes the backlight module.

The utility model provides a lamp plate, backlight unit and display device's beneficial effect lies in: compared with the prior art, the utility model discloses a both sides that just are located each lamp pearl on the lamp strip are provided with black silk screen printing respectively, and black silk screen printing can absorb the light part that each lamp pearl sent to can effectively reduce the intensity of the light coincidence part of two adjacent lamp pearls, and then improve the even uniformity of backlight unit light-emitting, improve display device's display effect. The backlight module is provided with the lens body by covering each lamp bead, so that the light irradiation area of each lamp bead can be increased, the number of the lamp beads can be reduced, and the cost of the display device is low.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural view of a lamp panel provided in an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a backlight module according to an embodiment of the present invention;

fig. 3 is a schematic structural view illustrating a connection between a light bar and a lens body according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a reflector according to an embodiment of the present invention;

fig. 5 is a schematic front structural view of a lens body according to an embodiment of the present invention;

fig. 6 is a schematic back structural view of a lens body according to an embodiment of the present invention;

fig. 7 is a schematic cross-sectional view of a lens body according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a diffusion plate according to an embodiment of the present invention;

fig. 9 is an enlarged schematic view of a portion a of fig. 8.

Wherein, in the figures, the respective reference numerals:

1-a lens body; 11-a base; 12-a middle seat; 13-a top seat;

2-a first side; 3-a second side; 4-a first blind hole; 5-a second blind hole; 6, installing a guide pillar; 7-an annular groove;

20-a lamp panel; 21-a substrate; 22-a light bar; 220-black silk screen printing; 221-lamp beads; 23-a reflective sheet; 230-a through hole; 231-first sheet; 232-a second sheet; 233-third slice; 24-a diffuser plate; 241-notch; 242-side lamp body.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

Furthermore, the terms "first", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", "third" may explicitly or implicitly include one or more of the features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present invention, it is to be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 1, a lamp panel according to an embodiment of the present invention will be described. The lamp panel 20 comprises a lamp strip 22, a plurality of lamp beads 221 mounted on the lamp strip 22 and a reflector plate 23 used for reflecting light rays emitted by the lamp beads 221, a plurality of through holes 230 through which the corresponding lamp beads 221 respectively penetrate are formed in the reflector plate 23, the reflector plate 23 is arranged on the side face, on which the lamp beads 221 are mounted, of the lamp strip 22, the lamp beads 221 are sequentially arranged along the length direction of the lamp panel 20, the distances between every two adjacent lamp beads 221 are equal, and each lamp bead 221 is electrically connected with the lamp strip 22; the lamp panel 20 further includes black silk screen 220 for partially absorbing light emitted from each lamp bead 221, the black silk screen 220 is respectively disposed on the lamp strip 22 and on two sides of each lamp bead 221, and each black silk screen 220 is located in the corresponding through hole 230. The black silk screen 220 can partially absorb the light emitted from the lamp beads 221, thereby reducing the intensity of light near the lamp beads 221.

Referring to fig. 2 and 3, the present invention further provides a backlight module, which includes a plurality of lamp panels 20, a substrate 21 for supporting each lamp panel 20, and a lens body 1 for refracting light emitted from each lamp bead 221; the lamp panels 20 are mounted on the substrate 21 at equal intervals, and the lens bodies 1 are covered on the corresponding lamp beads 221. Optionally, a groove for accommodating each lamp panel 20 is formed in the substrate 21, so that each lamp panel 20 can be conveniently positioned, installed and replaced.

Optionally, referring to fig. 5 to 7, the lens body 1 has a first side surface 2 for light to enter and a second side surface 3 for light to exit, the first side surface 2 is located on one side of the lens body 1, and the second side surface 3 is located on the other side of the lens body 1; lens body 1 offers the first blind hole 4 that is used for supplying lamp pearl 221 to stretch into on first side 2, and the diameter of first blind hole 4 reduces gradually along first side 2 towards the direction of second side 3, and lens body 1 has offered second blind hole 5 on second side 3, and the diameter of second blind hole 5 reduces gradually along the direction of second side 3 towards first side 2. The side walls of the first blind holes 4 form the first side surface 2 and the side walls of the second blind holes 5 form the second side surface 3. In the structure, the two sides of the lens body 1 are respectively provided with a first side surface 2 for light to enter and a second side surface 3 for light to exit, the first side surface 2 is provided with a first blind hole 4 for a lamp bead 221 to extend into, the diameter of the first blind hole 4 is gradually reduced along the direction from the first side surface 2 to the second side surface 3, namely, the inner side surface of the first blind hole 4 is obliquely arranged, so that the first refraction of the light is facilitated; the diameter of the second blind hole 5 is gradually reduced towards the first side surface 2 along the second side surface 3, namely, the inner side surface of the second blind hole 5 is obliquely arranged, so that the light can be refracted for the second time conveniently. Therefore, through the double refraction of the inner side wall of the first blind hole 4 and the inner side wall of the second blind hole 5, the light emitted from the second side surface 3 is uniform, and the illumination effect is good.

Optionally, the cross sections of the first blind hole 4 and the second blind hole 5 are both triangular, and the side walls of the first blind hole 4 and the second blind hole 5 are both inclined planes, so that reflection and refraction of light rays can be realized. In other embodiments, the cross-sections of the first blind hole 4 and the second blind hole 5 may have other configurations, which is not limited herein.

Optionally, referring to fig. 5 to 7, the diameter of the open end of the second blind hole 5 is larger than the diameter of the open end of the first blind hole 4. Optionally, the cross section of the first blind hole 4 has two inclined surfaces, and the included angle between the two inclined surfaces can range from 120 ° to 180 °, and is preferably 160 °; the cross section of the second blind hole 5 has two inclined surfaces, the included angle between which may range from 60 ° to 120 °, preferably 90 °, without being limited thereto. With the structure, the area of the second side surface 3 can be ensured to be larger than that of the first side surface 2, so that the irradiation range of light can be enlarged, and the illumination effect of the display device can be improved.

Optionally, referring to fig. 5 to 7, the depth of the second blind hole 5 is greater than the depth of the first blind hole 4. The structure is convenient for the light to irradiate the second side surface 3 after being reflected or refracted by the first side surface 2 and to be emitted after being reflected or refracted by the second side surface 3, thereby increasing the illumination intensity and improving the display effect of the display device. In other embodiments, the depths of the second blind hole 5 and the first blind hole 4 can also be adjusted according to actual needs, and are not limited herein.

Optionally, referring to fig. 5 to 7, the lens body 1 includes a base 11, a top base 13, and a middle base 12 disposed between the base 11 and the top base 13, the first blind hole 4 is disposed on the base 11, and the second blind hole 5 is disposed on the top base 13. Alternatively, the base 11, the middle seat 12 and the top seat 13 may be integrally formed, and are not limited herein. With the structure, after the light is emitted through the base 11, the light can be reflected or refracted through the base 11, the middle base 12 and the top base 13 in sequence, so that the light emitted from the second side surface 3 is uniform and consistent, and the display effect of the display device is improved.

Optionally, referring to fig. 5 to 7, an end of the first blind hole 4 far from the open end of the first blind hole 4 extends into the middle base 12, an end of the second blind hole 5 far from the open end of the second blind hole 5 extends into the middle base 12, and an end of the first blind hole 4 far from the open end of the first blind hole 4 and an end of the second blind hole 5 far from the open end of the second blind hole 5 are disposed at an interval. With the structure, the light ray incident from the first side surface 2 can be reflected or refracted by the middle base 12 and then emitted from the second side surface 3, and the light ray reflected or refracted by the middle base 12 is uniform, so that the display effect of the display device can be improved.

Optionally, referring to fig. 5 to 7, the cross-sectional area of the middle seat 12 gradually decreases from the first side surface 2 to the second side surface 3. This structure, the outer peripheral surface of well seat 12 is outside convex arcwall face to the direction of illumination of adjustable light can be with the light reflection or refraction to the second side 3 of kicking into from first side 2, thereby improves the light intensity of 3 light-emittings from the second side, and then improves display device's display effect.

Optionally, referring to fig. 5 to 7, a plurality of mounting guide posts 6 are mounted on a side surface of the base 11 away from the middle seat 12, and the mounting guide posts 6 are disposed around the first blind hole 4. This structure can realize the location installation to lens body 1 through installation guide pillar 6 for lens body 1's simple to operate is swift.

Optionally, referring to fig. 5 to 7, an annular groove 7 is formed on a side surface of the base 11 away from the middle seat 12, and the annular groove 7 is disposed between the first blind hole 4 and the mounting guide post 6. In the structure, the annular groove 7 is arranged to prevent part of light emitted by the light emitting source from being emitted from the bottom surface of the base 11, and the annular groove 7 can reflect or refract the light into the lens body 1, so that the light emitting effect is improved.

Optionally, referring to fig. 5 to 7, the height of each mounting post 6 is greater than the depth of the annular groove 7. With the structure, when the mounting guide post 6 is mounted on the substrate 21, a part of machining allowance is reserved, so that the lens body 1 can be conveniently mounted and fixed, the bottom surface of the base 11 is attached to the plane of the substrate 21 as much as possible, and the loss of light is reduced. In other embodiments, the height of the mounting guide post 6 and the depth of the annular groove 7 can be adjusted according to actual needs, and are not limited herein.

Further, please refer to fig. 5 to fig. 7 together, as a specific implementation manner of the backlight module according to an embodiment of the present invention, a plurality of mounting guide pillars 6 are installed on a side surface of each lens body 1 facing the corresponding light bar 22, and a blind hole for each mounting guide pillar 6 to extend into is correspondingly formed on each light bar 22; each lens body 1 is fixed to the corresponding light bar 22 by adhesion. This structure can realize the location installation to lens body 1, improves the accuracy nature of lens body 1 installation.

Further, please refer to fig. 4, as a specific implementation manner of the backlight module according to the embodiment of the present invention, the reflector 23 includes a first sheet 231 mounted on the side of the substrate 21 having the lamp bead 221, and the first sheet 231 is provided with a through hole 230 for the corresponding lens body 1 to extend out. With this structure, the first sheet 231 can reflect the light not irradiated to the display panel, thereby improving the display effect of the display panel. The through holes 230 can avoid the lens bodies 1 and also can play a certain light absorption role, so that light rays are uniform and consistent.

Further, please refer to fig. 4 together, as a specific implementation manner of the backlight module provided by the embodiment of the present invention, the reflector plate 23 further includes two second plates 232 for reflecting the light emitted by each lamp bead 221 to the display panel, the two second plates 232 are respectively installed at two ends of the first plate 231, the two second plates 232 are inclined from the first plate 231, and the two second plates 232 are symmetrically distributed along the central axis of the first plate 231. In the structure, the light emitted by each lamp bead 221 is emitted from one part to the left and right sides of the substrate 21, and the two second sheets 232 can reflect the part of the light to the display panel, so that the display effect of the display device is improved.

Further, as a specific implementation manner of the backlight module according to the embodiment of the present invention, an included angle between each second piece 232 and the first piece 231 is equal, and an included angle between each second piece 232 and the first piece 231 ranges from 30 ° to 60 °. Optionally, each second tab 232 is angled at 45 ° to the first tab 231. With this structure, the reflection of each second sheet 232 is good. In other embodiments, the included angle between each second plate 232 and the first plate 231 can also be adjusted according to actual needs, and is not limited herein.

Further, please refer to fig. 4 together, as a specific implementation manner of the backlight module provided by the embodiment of the present invention, the reflector plate 23 further includes two third plates 233 for reflecting the light emitted by each lamp bead 221 to the display panel, the two third plates 233 are respectively installed at two ends of the first plate 231, the two third plates 233 are located between the two second plates 232, two ends of each third plate 233 are respectively connected with the two second plates 232, the two third plates 233 are inclined with the first plate 231, and the two second plates 232 are symmetrically distributed along the central axis of the first plate 231. In the structure, a part of light emitted by each lamp bead 221 irradiates the upper side and the lower side of the substrate 21, and can be reflected to the display panel through the two third sheets 233, so that the display effect of the display device is improved.

Further, as a specific implementation manner of the backlight module according to the embodiment of the present invention, an included angle between each third piece 233 and the first piece 231 is equal, and an included angle between each third piece 233 and the first piece 231 ranges from 30 ° to 60 °. Optionally, the angle between each third piece 233 and the first piece 231 is 45 °. With this structure, the reflection of each third plate 233 works well. In other embodiments, the included angle between each third plate 233 and the first plate 231 can also be adjusted according to actual needs, and is not limited herein.

Optionally, referring to fig. 2, the backlight module further includes a diffuser 24, and an accommodation space is enclosed between the diffuser 24, the two second sheets 232, the two third sheets 233 and the substrate 21, wherein the diffuser 24 is parallel to the substrate 21. The diffusion plate 24 diffuses the light so that the uniformity of the emitted light is uniform.

Optionally, referring to fig. 8 and 9, notches 241 are opened at four corners of the diffusion plate 24, and side light bodies 242 for supplementing light are accommodated in each notch 241. This structure, because a plurality of lamp pearls 221 concentrate the setting in the middle part of base plate 21, can lead to the darker phenomenon of illumination in four corners of display device. The sidelight lamp bodies 242 are additionally arranged at the four corners of the diffusion plate 24, so that a light supplementing effect can be achieved, light rays at all positions of a display panel of the display device are uniform, and the display effect of the display device is good.

The utility model also provides a display device, including foretell backlight unit.

The embodiment of the utility model provides a lamp plate, backlight unit and display device, compared with the prior art, the utility model discloses a both sides that just are located each lamp pearl 221 on lamp strip 22 are provided with black silk screen printing 220 respectively, and black silk screen printing 220 can absorb the light part that each lamp pearl 221 sent to can effectively reduce the intensity of the light coincidence part of two adjacent lamp pearls 221, and then improve the even uniformity of backlight unit light-emitting, improve display device's display effect. The backlight module is provided with the lens body by covering each lamp bead 221, so that the light irradiation area of each lamp bead 221 can be increased, the number of the lamp beads 221 can be reduced, and the cost of the display device is low.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. The lamp plate, its characterized in that: the LED lamp comprises a lamp strip, a plurality of lamp beads arranged on the lamp strip and a reflector plate used for reflecting light rays emitted by the lamp beads, wherein a plurality of through holes for the corresponding lamp beads to pass through are formed in the reflector plate; the lamp panel still including be used for the part to absorb each the black silk screen printing of the light that the lamp pearl sent, on the lamp strip and be located each the both sides of lamp pearl are equipped with respectively black silk screen printing, each black silk screen printing is located correspondingly in the through-hole.

2. Backlight unit, its characterized in that: the lamp comprises a plurality of lamp panels according to claim 1, a substrate for supporting each lamp panel, and a lens body for refracting light emitted by each lamp bead; each the lamp plate is installed at equidistant on the base plate, each lens body cover is located correspondingly on the lamp pearl.

3. The backlight module of claim 2, wherein: a plurality of mounting guide pillars are mounted on the side surface of each lens body facing the corresponding light bar, and a blind hole for each mounting guide pillar to extend into is correspondingly formed in each light bar; and each lens body is fixedly bonded on the corresponding lamp strip.

4. A backlight module according to claim 2 or 3, wherein: the reflector plate comprises a first sheet arranged on the side face of the substrate, wherein the lamp beads are arranged on the substrate, and the first sheet is provided with through holes for the corresponding lens bodies to extend out.

5. The backlight module of claim 4, wherein: the reflector plate further comprises two second plates for reflecting light rays emitted by the lamp beads, the second plates are respectively arranged at two ends of the first plate and are obliquely arranged with the first plate, and the second plates are symmetrically distributed with the central axis of the first plate.

6. The backlight module of claim 5, wherein: the included angle between each second sheet and the first sheet is equal, and the included angle between each second sheet and the first sheet ranges from 30 degrees to 60 degrees.

7. The backlight module of claim 5, wherein: the reflector plate further comprises two third plates for reflecting light rays emitted by the lamp beads, the two third plates are respectively arranged at two ends of the first plate and located between the two second plates, two ends of each third plate are respectively connected with the two second plates, the two third plates and the first plate are obliquely arranged, and the two second plates are symmetrically distributed with the central axis of the first plate.

8. The backlight module of claim 7, wherein: the included angle between each third piece and the first piece is equal, and the included angle between each third piece and the first piece ranges from 30 degrees to 60 degrees.

9. The backlight module of claim 7, wherein: the backlight module further comprises a diffusion plate used for diffusing light, the diffusion plate is respectively connected with the second sheets and the third sheets, the diffusion plate, the two second sheets, the two third sheets and the substrate enclose a containing space, and the diffusion plate is parallel to the substrate.

10. A display device, characterized in that: comprising a backlight module as claimed in any one of claims 2-9.

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