Backlight module, display module and display equipment

Abstract

The utility model discloses a backlight module, a display module and a display device, and relates to the technical field of display devices, the backlight module comprises a back plate, two side edge installation areas and a middle installation area, the back plate is provided with two opposite side edge installation areas, and the middle installation area is located between the two side edge installation areas; the first light bar is arranged in the side edge mounting area; the second light bar is arranged in the middle mounting area, and the second light bar and the first light bar are arranged in parallel; wherein the lens covered by the lamp beads on the first lamp strip is configured to be a refraction type lens, and the lens covered by the lamp beads on the second lamp strip is configured to be a reflection type lens. According to the technical scheme provided by the utility model, the assembly cost of the backlight module can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of display equipment, in particular to a backlight module, a display module and a display equipment. Background Art

[0002] In the related art, the lenses used on the LED light strips in the backlight module are all refractive lenses. However, due to the narrow light output angle of the refractive lens, in order to ensure the brightness uniformity of the display screen, more LED light strips (such as Figure 1 As shown in FIG, the assembly of more LED light strips requires higher assembly costs. Utility Model Content

[0003] The main purpose of the utility model is to provide a backlight module, a display module and a display device, aiming to reduce the assembly cost of the backlight module.

[0004] To achieve the above-mentioned purpose, the backlight module proposed in the present invention includes:

[0005] A back plate having two opposite side mounting areas and a middle mounting area located between the two side mounting areas;

[0006] A first light bar is provided in the side mounting area; and

[0007] a second light bar, disposed in the middle mounting area and arranged in parallel with the first light bar;

[0008] The lens covering the lamp beads on the first light bar is configured as a refractive lens, and the lens covering the lamp beads on the second light bar is configured as a reflective lens.

[0009] The present invention further provides a display module, comprising:

[0010] Display panel;

[0011] The backlight module is provided on the back side of the display panel, and the backlight module is the backlight module described above.

[0012] The present invention also provides a display device, comprising the display module as described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0014] Figure 1 A schematic structural diagram of a backlight module provided as background technology;

[0015] Figure 2 This is a structural diagram of an embodiment of a backlight module provided by the present utility model.

[0016] Description of Figure Numbers:

[0017] 100, back panel; 110, side mounting area; 120, middle mounting area;

[0018] 200, first light bar;

[0019] 300, second light bar;

[0020] 400. Lamp beads.

[0021] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0023] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0024] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0025] The utility model provides a backlight module, a display module and a display device.

[0026] In one embodiment of the present invention, the backlight module includes:

[0027] The back panel 100 has two opposite side mounting areas 110 and a middle mounting area 120 located between the two side mounting areas 110;

[0028] The first light bar 200 is disposed in the side mounting area 110; and

[0029] The second light bar 300 is disposed in the middle mounting area 120 and is arranged in parallel with the first light bar 200;

[0030] The lens covering the lamp beads 400 on the first light bar 200 is configured as a refractive lens, and the lens covering the lamp beads 400 on the second light bar 300 is configured as a reflective lens.

[0031] In the technical solution of the present invention, the back panel 100 is provided with two opposite side mounting areas 110, and a middle mounting area 120 is provided between the two opposite side mounting areas 110. The first light strip 200 is respectively installed on the two opposite side mounting areas 110, and the second light strip 300 is installed on the middle mounting area 120. Specifically, the first light strip 200 and the second light strip 300 are both provided with a plurality of lamp beads 400 at intervals along their length directions. The outer cover of the lamp beads 400 on the first light strip 200 is provided with a refractive lens, and the outer cover of the lamp beads 400 on the second light strip 300 is provided with a reflective lens. Since the light emitting angle of the reflective lens is larger than that of the refractive lens, even if fewer light strips are installed in the middle mounting area 120, the light emitting angle can still cover the display screen corresponding to the middle mounting area 120. That is, by mixing and matching the refractive lens and the reflective lens, the number of light strips installed in the middle mounting area 120 is reduced, thereby reducing the assembly cost of the backlight module.

[0032] The following takes a 65-inch display as an example. Figure 1 It is a conventional refractive solution, that is, all the lamp beads 400 are refractive lenses, and the first light strips 200 are installed in the upper and lower side mounting areas 110 of the back plate 100, and three first light strips 200 are installed in the middle mounting area 120. Figure 2A first light bar 200 is installed in the upper and lower side mounting areas 110 respectively, and a second light bar 300 is installed in the middle mounting area 120. Only one second light bar 300 and a reflective lens are used to achieve the effect of three first light bars 200 and a refractive lens, which reduces costs. When the size is greater than 65 inches, the same setting is adopted, with a first light bar 200 set in each side mounting area 110. The number of second light bars 300 in the middle mounting area 120 is obtained according to the length / width of the display screen, and the lenses covering the lamp beads 400 on each second light bar 300 are all reflective lenses.

[0033] In addition, it should be noted that, assuming that the first light bar 200 and the second light bar 300 extend in the first direction, if the first direction is along the length of the back plate 100, then the two side mounting areas 110 of the back plate 100 for mounting the first light bar 200 are located on both sides of the width direction of the back plate 100, such as Figure 2 As shown, at this time, the lamp beads 400 on the second light strip 300 are arranged at intervals along the length direction of the back panel 100. Since the lamp beads 400 are scattered by the reflective lens, the reflection angle thereof is larger, the light coverage range of the lamp beads 400 is larger, and the illumination range in the width direction of the back panel 100 is wider, that is, the number of second light strips 300 is reduced and the assembly cost is reduced; of course, it is understandable that the first direction can also be the width direction of the back panel 100, and at this time the two side mounting areas 110 of the back panel 100 for mounting the first light strip 200 are respectively located on both sides of the length direction of the back panel 100, which is the same as the above principle and will not be elaborated here.

[0034] In the embodiment of the present invention, the brightness of the lamp beads 400 used in the second light bar 300 is greater than the brightness of the lamp beads 400 used in the first light bar 200 .

[0035] Specifically, since the reflective lens has a large light output angle, the light at the position directly facing it is weaker than the light at the position directly facing the refractive lens. In this embodiment, the lamp beads 400 on the second light bar 300 are equipped with high-brightness lamp beads 400 to increase their own brightness and increase the luminous flux to compensate for the phenomenon of brightness reduction caused by increasing the light output angle. In combination with the ordinary-bright lamp beads 400 on the first light bar 200, the brightness of the display screen is more uniform.

[0036] In the embodiment of the present invention, there is a first distance between two adjacent lamp beads 400 on the first light bar 200 , and there is a second distance between two adjacent lamp beads 400 on the second light bar 300 , and the second distance is smaller than the first distance.

[0037] In this embodiment, by setting the distance between any two adjacent lamp beads 400 on the second light bar 300 in the first direction to be smaller than the distance between any two adjacent lamp beads 400 on the first light bar 200, the distance between the lamp beads 400 corresponding to the reflective lenses is reduced, and the light sources can be arranged more densely, thereby improving the brightness of the display screen corresponding to the second light bar 300 to ensure that the overall light is evenly distributed.

[0038] In an embodiment of the present invention, the first distance is twice the second distance. In a specific embodiment, the range of the first distance is 80mm to 150mm, that is, the range of the second distance can be set to 40mm to 75mm. By reducing the distance between adjacent lamp beads 400 on the second light bar 300, the problem of darker brightness caused by the large light output angle of the reflective lens can be compensated, and the uniform brightness of the display interface can be ensured.

[0039] In the embodiment of the present invention, the number of all reflective lenses on the backlight module is greater than the number of all refractive lenses, that is, the total number of lamp beads 400 on all second light bars 300 is greater than the total number of lamp beads 400 on all first light bars 200 .

[0040] Specifically, since the light output angle of the reflective lens is relatively large, the light from the lamp bead 400 passes through the reflective lens and diverges to the surroundings, which makes the light near the center of the lamp bead 400 on the second light bar 300 weaker. In order to make the light brightness consistent, the number of lamp beads 400 on the second light bar 300 is increased, and the distance between two adjacent lamp beads 400 on the second light bar 300 is reduced, that is, the light brightness of one of the lamp beads 400 on the second light bar 300 can cover the adjacent lamp bead 400, so that the brightness of the entire picture is consistent.

[0041] In one embodiment, the ratio of the number of refractive lenses to the number of reflective lenses is preferably 1:1.5, so that the brightness of the display interface is uniform. For example, a 65-inch display screen Figure 2 As shown, two first light strips 200 are located on the upper and lower sides of the back panel 100, and a second light strip 300 is arranged in the middle. According to the size of the display screen and the setting of the distance between the lamp beads 400, two first light strips 200 are respectively arranged on the upper and lower sides along the length direction, and each first light strip 200 has 5 lamp beads 400, and two second light strips 300 are also arranged in the middle, and each second light strip 300 has 15 lamp beads 400. The distance between any two adjacent lamp beads 400 on the second light strip 300 is smaller than the distance between any two adjacent lamp beads 400 on the first light strip 200.

[0042] In an embodiment of the present invention, when a plurality of first light bars are arranged in parallel and spaced apart in the side mounting area, a third distance is provided between two adjacent first light bars; when a plurality of second light bars are arranged in parallel and spaced apart in the middle mounting area, a fourth distance is provided between a first light bar and an adjacent second light bar, and between two adjacent second light bars; and the fourth distance is greater than the third distance.

[0043] Specifically, the first light bar 200 and the second light bar 300 both extend in the first direction, and the connection direction between the two opposite side mounting areas 110 of the back panel 100 is the second direction. If the display screen is large, in order to reduce the assembly cost, the second light bar 300 is installed in the middle assembly area 120. However, at the position of the side mounting area 110, due to the large overall size of the display screen, the area of ​​the side mounting area 110 is also large. In order to ensure consistent brightness of the overall picture, multiple first light bars 200 can be installed in parallel in the side mounting area 110 along the second direction, and the distance between adjacent first light bars 200 in the second direction is a third distance, which is smaller than the distance between the first light bar 200 and the adjacent second light bar 300 and the distance between any adjacent second light bars 300 in the second direction, so as to facilitate uniform distribution of overall light.

[0044] In one embodiment, the third distance range is set to 150mm~160mm, and the fourth distance can be set to 260mm~270mm. The number of the first light bar 200 and the second light bar 300 in the second direction is obtained according to the size data of the display screen. Different display screens have different sizes, and their number needs to be calculated according to the specific size. No further explanation is given here, and the specific arrangement of the first light bar 200 and the second light bar 300 can be obtained according to the actual required brightness. In addition, different reflective lenses have different light-emitting angles. In actual applications, the distance between the first light bar 200 and the second light bar 300 and the adjacent second light bar 300 needs to be obtained according to the specific light-emitting angle of the reflective lens.

[0045] The present invention also proposes a display module, which includes a display panel and a backlight module. The backlight module is arranged on the back side of the display panel. The specific structure of the backlight module refers to the above embodiment. Since this display module adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0046] The present invention also proposes a display device, including a display module. The structure of the display module refers to the above embodiment. Since the present display device adopts the technical solution of the above embodiment, it has all the beneficial effects brought by the technical solution of the above embodiment, which will not be repeated here.

[0047] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A backlight module, characterized in that: include: A back plate having two opposite side mounting areas and a middle mounting area located between the two side mounting areas; A first light bar is provided in the side mounting area; as well as a second light bar, disposed in the middle mounting area and arranged in parallel with the first light bar; The lens covering the lamp beads on the first light bar is configured as a refractive lens, and the lens covering the lamp beads on the second light bar is configured as a reflective lens.

2. The backlight module according to claim 1, wherein: The brightness of the lamp beads used in the second light bar is greater than the brightness of the lamp beads used in the first light bar.

3. The backlight module according to claim 1, wherein: There is a first distance between two adjacent lamp beads on the first light bar, and there is a second distance between two adjacent lamp beads on the second light bar, and the second distance is smaller than the first distance.

4. The backlight module according to claim 3, wherein: The first distance is twice the second distance.

5. The backlight module according to claim 4, wherein: The first distance ranges from 80 mm to 150 mm.

6. The backlight module according to claim 1, wherein: In the backlight module, the number of all refractive lenses is less than the number of all reflective lenses.

7. The backlight module according to claim 6, wherein: The ratio of the number of the refractive lenses to the number of the reflective lenses is 1:1.

5.

8. The backlight module according to any one of claims 1 to 7, wherein: When the side mounting area has a plurality of first light strips arranged in parallel and at intervals, a third distance exists between two adjacent first light strips; When a plurality of second light strips are arranged in parallel and at intervals in the middle installation area, a fourth distance exists between each of the first light strips and adjacent second light strips, and between two adjacent second light strips; The fourth distance is greater than the third distance.

9. The backlight module according to claim 8, wherein: The third distance ranges from 150 mm to 160 mm; and / or The fourth distance ranges from 260 mm to 270 mm.

10. A display module, characterized in that: include: Display panel; A backlight module is provided on the back side of the display panel, and the backlight module is the backlight module according to any one of claims 1 to 9.

11. A display device, characterized in that: Comprising the display module as claimed in claim 10.

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