Passive 3D LED display module with sound transmission effect

Abstract

The utility model relates to the technical field of LED display, and provides a passive 3D LED display module with a sound transmission effect, which comprises a supporting structure, an area array driving plate, a mask layer, a polarization layer and a sound transmission channel. The area array driving plate is fixed on the supporting structure, one side, far away from the supporting structure, of the area array driving plate is provided with light-emitting tubes which are arranged in an array mode, the shade layer is fixed on one side, far away from the supporting structure, of the area array driving plate, and the polarization layer is attached to one side, far away from the area array driving plate, of the shade layer. The sound transmission channel sequentially penetrates through the supporting structure, the area array driving plate, the mask layer and the polarization layer. According to the technical scheme provided by the embodiment of the invention, the penetrating supporting structure, the area array driving plate, the shielding layer and the polarization layer are arranged, so that a sound source heard by a viewer comes from a display picture, the picture and the sound are located at the same position at the viewing angle of the viewer, that is, the picture and the sound are positioned and fused through the sound transmission channel, and the sound transmission effect is improved. And the synchronism of sound and pictures is improved, so that the audio-visual effect of the playing equipment is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of LED display, in particular to a passive 3D LED display module with sound transmission effect. BACKGROUND

[0002] 3D LED (light-emitting diode) display screen can bring viewers a sense of being in the scene, and is particularly suitable for movie theaters, theme parks and science museums and other occasions. However, the playing equipment in the above-mentioned occasions not only requires the 3D LED display screen to provide high-definition realistic pictures, but also pays great attention to the sound effect of the loudspeaker equipment. Only when the sound positioning and the picture position are fused in the direction can the playing equipment achieve the best visual and auditory effect.

[0003] The current 3D LED display screen does not have the sound transmission function, and generally places loudspeaker equipment around the display screen to transmit sound, which is difficult to ensure that the picture position and the sound positioning are perfectly fused in the direction, resulting in poor visual and auditory effect of the playing equipment. SUMMARY

[0004] The embodiment of the present application provides a passive 3D LED display module with sound transmission effect, so as to fuse the display picture position and the sound positioning in the direction of the playing equipment, and improve the visual and auditory effect of the playing equipment.

[0005] The passive 3D LED display module with sound transmission effect provided by the present application comprises a support structure, a surface array driving board, a mask layer, a polarizing layer and a sound transmission channel.

[0006] The surface array driving board is fixed on the support structure, and the surface array driving board is provided with an array of light emitting tubes on the side away from the support structure. The mask layer is fixed on the side of the surface array driving board away from the support structure, and the polarizing layer is attached to the side of the mask layer away from the surface array driving board.

[0007] The sound transmission channel penetrates the support structure, the surface array driving board, the mask layer and the polarizing layer in sequence.

[0008] The technical scheme provided by the embodiment of the present application is that the sound transmission channel penetrating the support structure, the surface array driving board, the mask layer and the polarizing layer is set, so that the sound source heard by the viewer comes from the display picture. In this way, from the perspective of the viewer, the picture and the sound are at the same position, that is, the picture position and the sound positioning are fused in the direction through the sound transmission channel, the synchronization of the sound and the picture is improved, and the visual and auditory effect of the playing equipment is improved. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 The overall structure of the passive 3D LED display module provided by the embodiment of the present application is shown in the figure Figure 1 ;

[0010] Figure 2 The overall structure of the passive 3D LED display module provided by the embodiment of the present application is shown in the schematic diagram Figure 2 ;

[0011] Figure 3 The distribution of the light-emitting tube provided by the embodiment of the present application is shown in the schematic diagram Figure 1 ;

[0012] Figure 4 The structure of the mask layer provided by the embodiment of the present application is shown in the schematic diagram

[0013] Figure 5 The distribution of the light-emitting tube provided by the embodiment of the present application is shown in the schematic diagram Figure 2 ;

[0014] Figure 6 The distribution of the light-emitting tube provided by the embodiment of the present application is shown in the schematic diagram Figure 3 ;

[0015] Figure 7 The layout structure of the schematic diagram provided by the embodiment of the present application is shown in the schematic diagram Figure 1 ;

[0016] Figure 8 The structure of the polarizing layer provided by the embodiment of the present application is shown in the schematic diagram Figure 1 ;

[0017] Figure 9 The structure of the polarizing layer provided by the embodiment of the present application is shown in the schematic diagram Figure 2 ;

[0018] Figure 10 The distribution structure of the first polarizing film and the second polarizing film provided by the embodiment of the present application is shown in the schematic diagram Figure 1 ;

[0019] Figure 11 The distribution structure of the first light-emitting tube and the second light-emitting tube provided by the embodiment of the present application is shown in the schematic diagram Figure 1 ;

[0020] Figure 12 The distribution structure of the first polarizing film and the second polarizing film provided by the embodiment of the present application is shown in the schematic diagram Figure 2 ;

[0021] Figure 13 The distribution structure of the first light-emitting tube and the second light-emitting tube provided by the embodiment of the present application is shown in the schematic diagram Figure 2 ;

[0022] Figure 14 The distribution structure of the first polarizing film and the second polarizing film provided by the embodiment of the present application is shown in the schematic diagram Figure 3 ;

[0023] Figure 15 The distribution structure of the first light-emitting tube and the second light-emitting tube provided in the embodiment of the present application is shown Figure 3 .

[0024] Wherein, 1-light-emitting tube; 11-first light-emitting tube, 12-second light-emitting tube, 2-face array driving board; 21-second sound transmission channel, 3-supporting structure; 31-first sound transmission channel, 4-shielding layer; 41-third sound transmission channel, 42-through hole, 5-polarizing layer; 51-fourth sound transmission channel; 52-first polarizing film, 53-second polarizing film. DETAILED DESCRIPTION

[0025] The passive 3D LED display module with sound transmission effect provided in the embodiment of the present application is shown in Figure 1 and Figure 2 The passive 3D LED display module includes the supporting structure 3, the face array driving board 2, the shielding layer 4 and the polarizing layer 5 which are sequentially stacked.

[0026] The face array driving board 2 is fixed on the supporting structure 3, as shown in Figure 3 , the face array driving board 2 is provided with arrayed light-emitting tubes 1 on the side away from the supporting structure 3. The shielding layer 4 is fixed on the side of the face array driving board 2 away from the supporting structure 3, and the polarizing layer 5 is attached to the side of the shielding layer 4 away from the face array driving board 2.

[0027] Wherein, the sound transmission channel penetrates the supporting structure 3, the face array driving board 2, the shielding layer 4 and the polarizing layer 5 in sequence, and it needs to be noted that the sound transmission channel includes channels penetrating the supporting structure 3, the face array driving board 2, the shielding layer 4 and the polarizing layer 5. In some embodiments, multiple channels are uniformly distributed at positions without integrated circuits or without plug-in devices. In this way, from the perspective of the viewer, the sound of the loudspeaker device and the display picture of the passive 3D LED display module are fused in the azimuth.

[0028] The technical scheme provided in the embodiment of the present application, by setting the sound transmission channel penetrating the supporting structure 3, the face array driving board 2, the shielding layer 4 and the polarizing layer 5, makes the sound source heard by the viewer come from the display picture. In this way, from the perspective of the viewer, the picture and the sound are at the same position, that is, the picture position and the sound positioning are fused in the azimuth through the sound transmission channel, improving the synchronization of the sound and the picture, thereby improving the visual and auditory effect of the playing device.

[0029] In some embodiments, the loudspeaker device is arranged on one side of the supporting structure 3, and the sound emitting direction of the loudspeaker device faces the sound transmission channel. Of course, in the actual application process, the loudspeaker device is not limited to being fixedly arranged on the supporting structure 3, but can also be arranged to support the loudspeaker device in a separate structure, and the loudspeaker device and the supporting structure 3 are in a separated state.

[0030] With the display interface of the passive 3D LED display module as an example, the loudspeaker device can be arranged on the back of the support structure 3, i.e., on the back of the passive 3D LED display module. In this way, the sound emitted by the loudspeaker device is transmitted to the front of the 3D LED display module through the sound transmission channel, so that the sound of the loudspeaker device and the picture of the display interface are fused at the same position, thereby improving the audio-visual effect of the playing device.

[0031] As shown in Figure 4 and Figure 7 , the mask layer 4 is provided with a through hole 42, and the light emitting tube 1 is arranged in the through hole 42. In some embodiments, as shown in Figure 5 , the thickness of the mask layer 4 is equal to the height of the light emitting tube 1, so that the end of the light emitting tube 1 is flush with one side surface of the mask layer 4. In this way, the mask layer 4 can avoid affecting the display content of the light emitting tube 1, especially when the display screen is viewed from the side. If the mask layer is higher than the light emitting tube, the problem of visual angle blocking may occur. As shown in Figure 6 , the mask layer 4 can support the polarizing layer 5. Since the end of the light emitting tube 1 is flush with one side surface of the mask layer 4, it can be ensured that the polarizing layer 5 is flatly attached. In addition, as shown in Figure 6 , in the case that the polarizing layer 5 is attached to the surface of the mask layer 4, the end of the light emitting tube 1 can be attached to the polarizing layer 5, thereby improving the display effect of the display module.

[0032] As shown in Figure 5 and Figure 6 , the inner hole size of the through hole 42 on the mask layer 4 is greater than the outer frame size of the light emitting tube 1, so as to avoid interference between the through hole 42 on the mask layer 4 and the light emitting tube 1 during installation of the mask layer 4.

[0033] In some embodiments, as shown in Figure 1 , the sound transmission channel includes a first sound transmission channel 31, a second sound transmission channel 21, a third sound transmission channel 41 and a fourth sound transmission channel 51 which are sequentially connected. As shown in Figure 1 , the first sound transmission channel 31 is arranged on the support structure 3. As shown in Figure 7 , the second sound transmission channel 21 is arranged on the surface array driving board 2. As shown in Figure 4 , the third sound transmission channel 41 is arranged on the mask layer 4. As shown in Figure 8 and Figure 9 , the fourth sound transmission channel 51 is arranged on the polarizing layer 5.

[0034] In some embodiments, the projections of the first sound transmission channel 31, the second sound transmission channel 21, the third sound transmission channel 41 and the fourth sound transmission channel 51 overlap in the direction perpendicular to the plane on which the polarizing layer 5 is located.

[0035] In some embodiments, the polarizing layer 5 includes an array of first polarizing film 52 and second polarizing film 53, both of which cover the light-emitting diode 1. The polarization directions of the first polarizing film 52 and the second polarizing film 53 are different. Thus, the light-emitting diode 1 covered by the first polarizing film 52 can be referred to as the first light-emitting diode 11, and the light-emitting diode covered by the second polarizing film 53 can be referred to as the second light-emitting diode 12.

[0036] In some embodiments, the light-emitting diode 1 may be a light-emitting diode with a driver integrated design. The thickness of the light-emitting diode 1 is 0.5 mm to 1 mm, so that the masking layer 4 has a certain thickness to provide the strength to support the polarizing layer 5.

[0037] In this embodiment, the first polarizing film 52 and the second polarizing film 53 have three arrangement methods, that is, the first light-emitting tube 11 and the second light-emitting tube 12 have three arrangement methods.

[0038] Depending on the combination of different LED dot matrix driving methods, the first LED 11 and the second LED 12 can have different arrangements. For example, the driving methods include column driving and row driving. Different combinations of driving methods will result in different row and column routing of the power supply lines. In this case, the second sound transmission channel 21 set on the area array driving board 2 needs to avoid the lines in the area array driving board.

[0039] For example, such as Figure 10 As shown, the first arrangement is: the first polarizing film 52 and the second polarizing film 53 are alternately arranged only in the first direction. For example, as... Figure 12 As shown, the second arrangement is as follows: the first polarizing film 52 and the second polarizing film 53 are alternately arranged only in the second direction. For example, as... Figure 14 As shown, the third arrangement is as follows: the first polarizing film 52 and the second polarizing film 53 are alternately arranged in both the first and second directions. The first and second directions are perpendicular to each other. Figure 10 , Figure 12 and Figure 14 In this context, the horizontal direction is considered the first direction, and the vertical direction is considered the second direction.

[0040] In some embodiments, where the first polarizing film 52 and the second polarizing film 53 are alternately arranged only in the first direction, such as Figure 11As shown, in the first direction, the spacing between two adjacent light-emitting diodes 1 is N / 2. Taking the light-emitting diode 1 covered by the first polarizing film 52 as the first light-emitting diode 11 and the light-emitting diode covered by the second polarizing film 53 as the second light-emitting diode 12 as an example, the spacing between adjacent first light-emitting diodes 11 and second light-emitting diodes 12 is N / 2, the spacing between two adjacent first light-emitting diodes 11 is N, and the spacing between two adjacent second light-emitting diodes 12 is N. In this case, in the first direction, two adjacent light-emitting diodes 1 form a pixel group, the row drive of the light-emitting diodes 1 is in the first direction, and the second acoustic transmission channel 21 is located above or below the light-emitting diodes 1 in the second direction. In the second direction, the spacing between two adjacent light-emitting diodes 1 is N, that is, the spacing between two adjacent first light-emitting diodes 11 is N, and the spacing between two adjacent second light-emitting diodes 12 is N.

[0041] It should be noted that when the first polarizing film 52 and the second polarizing film 53 are alternately arranged only in the first direction, the spacing between the first light-emitting diode 11 and the second light-emitting diode 12 is not limited to the above-described arrangement and can also be configured in other ways. For example, in the first direction, the spacing between two adjacent light-emitting diodes 1 is N. Taking the light-emitting diode 1 covered by the first polarizing film 52 as the first light-emitting diode 11 and the light-emitting diode covered by the second polarizing film 53 as the second light-emitting diode 12, the spacing between adjacent first light-emitting diodes 11 and second light-emitting diodes 12 is N, the spacing between two adjacent first light-emitting diodes 11 is M, and the spacing between two adjacent second light-emitting diodes 12 is P. In this case, two adjacent light-emitting diodes 1 in the first direction form a pixel group, where M is not equal to 2N.

[0042] In some embodiments, where the first polarizing film 52 and the second polarizing film 53 are alternately arranged only in the second direction, such as Figure 13 As shown, in the first direction, the distance between two adjacent light-emitting diodes 1 is N. Taking the light-emitting diode 1 covered by the first polarizing film 52 as the first light-emitting diode 11 and the light-emitting diode covered by the second polarizing film 53 as the second light-emitting diode 12 as an example, the distance between two adjacent first light-emitting diodes 11 is N, and the distance between two adjacent second light-emitting diodes 12 is N. In the second direction, the distance between two adjacent first light-emitting diodes 11 and second light-emitting diodes 12 is N / 2, that is, the distance between two adjacent first light-emitting diodes 11 and second light-emitting diodes 12 is N / 2, the distance between two adjacent first light-emitting diodes 11 is N, and the distance between two adjacent second light-emitting diodes 12 is N. In this case, in the second direction, two adjacent light-emitting diodes 1 form a pixel group. In this case, the row drive of the light-emitting diode 1 is in the second direction, and the second acoustic transmission channel 21 is located on the left or right side of the light-emitting diode 1 in the second direction.

[0043] It should be noted that in the case where the first polarizing film 52 and the second polarizing film 53 are alternately arranged only in the second direction, the pitch of the first light emitting tube 11 and the second light emitting tube 12 is not limited to the above arrangement, and other arrangement modes can also be used. For example, in the second direction, the pitch of two adjacent light emitting tubes 1 is N, the pitch of two adjacent first light emitting tubes 11 is M, and the pitch of two adjacent second light emitting tubes 12 is P. In this case, two adjacent light emitting tubes 1 in the second direction form a pixel group, and M is not equal to 2N.

[0044] In some embodiments, as shown in FIG. 1, in the case where the first polarizing film 52 and the second polarizing film 53 are alternately arranged in the first direction and the second direction, i.e., the second light emitting tube 12 is located at the center position of four adjacent first light emitting tubes 11. In this case, two adjacent light emitting tubes 1 in the first direction can form a pixel group. Two adjacent light emitting tubes 1 in the second direction can also form a pixel group. Figure 15

[0045] In the embodiments of the present application, the polarizing layer can be arranged as a composite polarizing film composed of left-handed polarizing films and right-handed polarizing films arranged alternately, or as a composite polarizing film composed of 0° linear polarizing films and 90° linear polarizing films arranged alternately, i.e., the polarization directions of the first polarizing film 52 and the second polarizing film 53 are different. For example, the first polarizing film 52 is a left-handed polarizing film, and the second polarizing film 53 is a right-handed polarizing film. For another example, the first polarizing film 52 is a 0° linear polarizing film, and the second polarizing film 53 is a 90° linear polarizing film.

[0046] In some embodiments, the polarizing layer 5 is composed of a plurality of local structures, for example, as shown in FIG. 2, a single local structure forms the polarizing layer 5, as shown in FIG. 3, a plurality of local structures form the polarizing layer 5. Figure 9 Figure 8

[0047] In some embodiments, as shown in FIG. 1, in the case where the first polarizing film 52 and the second polarizing film 53 are alternately arranged in the first direction and the second direction, i.e., the second light emitting tube 12 is located at the center position of four adjacent first light emitting tubes 11. In this case, two adjacent light emitting tubes 1 in the first direction can form a pixel group. Two adjacent light emitting tubes 1 in the second direction can also form a pixel group. Figure 4 Figure 7 Figure 8 Figure 9 Figure 10 Figure 12 In some embodiments, as shown in FIG. 1, in the case where the first polarizing film 52 and the second polarizing film 53 are alternately arranged in the first direction and the second direction, i.e., the second light emitting tube 12 is located at the center position of four adjacent first light emitting tubes 11. In this case, two adjacent light emitting tubes 1 in the first direction can form a pixel group. Two adjacent light emitting tubes 1 in the second direction can also form a pixel group.

[0048] In some embodiments, the sound transmission channel can be arranged as a hole of other shapes according to the structural features of the passive 3D LED display module, for example, as shown in FIG. 6. Figure 14 ​​​​​​​​As shown, the sound transmission passage can also be provided as a circular hole.

Claims

1. A passive 3D LED display module with acoustic transparency effect, comprising: The support structure, the planar array driving board, the mask layer, the polarizing layer and the sound transmission channel are provided. The planar array driving board is fixed on the support structure, and an array of light emitting tubes is arranged on a side of the planar array driving board away from the support structure. The sound transmission channel penetrates the support structure, the planar array driving board, the mask layer and the polarizing layer in sequence.

2. The passive 3D LED display module with a sound transmission effect according to claim 1, wherein, A loudspeaker is arranged on a side of the support structure, and a sound emitting direction of the loudspeaker faces the sound transmission channel. 3.The passive 3D LED display module with sound transmission effect of claim 1, wherein, The mask layer is provided with a through hole, the light emitting tube is arranged in the through hole, and the thickness of the mask layer is equal to the height of light emission, so that the end of the light emitting tube is flush with a side surface of the mask layer.

4. The passive 3D LED display module with a sound transmission effect according to claim 3, wherein, The inner hole size of the through hole on the mask layer is greater than the outer frame size of the light emitting tube. 5.The passive 3D LED display module with sound transmission effect of claim 1, wherein, The sound transmission channel comprises a first sound transmission channel, a second sound transmission channel, a third sound transmission channel and a fourth sound transmission channel which are sequentially connected. The first sound transmission channel is arranged on the support structure, the second sound transmission channel is arranged on the planar array driving board, the third sound transmission channel is arranged on the mask layer, and the fourth sound transmission channel is arranged on the polarizing layer.

6. The passive 3D LED display module with acoustically transparent effect according to any one of claims 1-5, wherein, The sound transmission channel is a waist-shaped hole. 7.The passive 3D LED display module with sound transmission effect of claim 1, wherein, The polarizing layer comprises a first polarizing film and a second polarizing film arranged in an array, and the first polarizing film and the second polarizing film are covered by the light emitting tube.

8. The passive 3D LED display module with a sound transmission effect according to claim 7, wherein, The polarization directions of the first polarizing film and the second polarizing film are different.

9. The passive 3D LED display module with a sound transmission effect according to claim 8, wherein, The first polarizing film and the second polarizing film are alternately arranged in only a first direction or only a second direction, and the first direction and the second direction are perpendicular to each other. In the case that the first polarizing film and the second polarizing film are alternately arranged in only the first direction, the pitch of two adjacent light emitting tubes in the first direction is N / 2, and the pitch of two adjacent light emitting tubes in the second direction is N. 10.The passive 3D LED display module with sound transmission effect of claim 8, wherein, In the case that the first polarizing film and the second polarizing film are alternately arranged in only the second direction, the pitch of two adjacent light emitting tubes in the first direction is N, and the pitch of two adjacent light emitting tubes in the second direction is N / 2. In the case that the first polarizing film and the second polarizing film are alternately arranged in only the first direction, two adjacent light emitting tubes in the first direction form a pixel group. 11.The passive 3D LED display module with sound transmission effect of claim 7, wherein, In the case that the first polarizing film and the second polarizing film are alternately arranged in only the second direction, two adjacent light emitting tubes in the second direction form a pixel group.

12. Passive 3D LED display module with acoustically transparent effect according to any of the claims 7-11, wherein, The first polarizing film and the second polarizing film are alternately arranged in the first direction and the second direction, and the first direction and the second direction are perpendicular to each other.

13. Passive 3D LED display module with acoustically transparent effect according to any of claims 7-11, wherein, The first polarizing film is a left-handed polarizing film, and the second polarizing film is a right-handed polarizing film. The first polarizing film is a 0° linear polarizing film, and the second polarizing film is a 90° linear polarizing film.

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