Lamp and drive integrated sound transmission LED cinema screen
By integrating the driver and LED chips into a single design, and using a 45-degree angled array of LED chips, the problem of insufficient sound transmission aperture ratio in LED cinema screens is solved, achieving a high sound transmission rate for audio effects.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-12
- Publication Date
- 2026-04-17
AI Technical Summary
The existing LED cinema screens have insufficient sound-permeable opening ratio, which cannot meet the audiovisual requirements of cinemas.
The design integrates the driver chip and the LED beads, and the LED bead array is arranged at a 45-degree angle. The PCB board has cutouts in all positions except for the connector and HUB board to improve the opening rate of the sound transmission holes.
With a sound transmission aperture ratio of 65%, the sound effect is significantly improved, meeting the audiovisual requirements of cinemas.
Smart Images
Figure CN121884702A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of LED display technology, and in particular to a sound-permeable LED cinema screen that integrates lamp and driver. Background Technology
[0002] With the development of information technology in society, LED displays, with their seamless splicing and excellent color reproduction, are now widely used not only in billboards, conference rooms, and high-speed rail stations, but also in stages, exhibition halls, and cinemas. LED cinema screens offer superior color reproduction, higher brightness, and contrast compared to projectors, significantly improving display quality. However, cinemas offer audiences more than just visuals; an immersive audio-visual experience is also a key objective. The large array of LED beads on an LED cinema screen means that LED display modules typically lack sound-permeable holes. Even if sound-permeable holes are designed into the LED light board, their opening ratio is often low. This is because LED light boards contain not only numerous LED beads but also column driver chips, row driver chips, and resistors. For a 5.00mm pixel pitch screen, the opening ratio of sound-permeable holes is generally around 20%, but this 20% opening ratio places high demands on the audio system and the cinema's layout. A higher opening ratio would better meet the audiovisual requirements of cinemas. Summary of the Invention
[0003] Therefore, it is necessary to provide a sound-transparent LED cinema screen that integrates lamp and driver to address the issue of sound transmission aperture ratio on LED displays.
[0004] This invention provides a sound-permeable LED cinema screen with integrated lamp and driver, including lamp beads, driver chip, PCB board, and HUB board. The driver chip is disposed inside the lamp beads, the lamp beads are disposed on the PCB board, and the HUB board is disposed on the PCB board.
[0005] In one embodiment, the LEDs are arranged in a horizontal array with a first row of rotation angles on the PCB board.
[0006] In one embodiment, the first rotation angle is 45 degrees.
[0007] In one embodiment, the PCB board also includes a connector.
[0008] In one embodiment, the connector and the HUB board are arranged on the same side of the PCB board.
[0009] In one embodiment, the PCB board is provided with a sound-permeable hole, which is disposed between the upper and lower rows of LED beads.
[0010] In one embodiment, the PCB board is cut out with holes except for the sides where the connector and the HUB board are located and the positions of the LED beads. The LED beads in the horizontal direction are connected through the uncut parts of the PCB board, and the LED beads in the vertical direction are connected through the uncut parts of the PCB board at intervals.
[0011] In one embodiment, the LED bead includes at least three light-emitting chips, including a red light-emitting chip, a green light-emitting chip, and a blue light-emitting chip.
[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: Unlike the prior art, the present invention provides a method to maximize the sound transmission of LED displays by encapsulating the driving control and the light-emitting chip into a single LED bead and placing other electronic components on the same side of the PCB board, while using the remaining positions on the PCB board for openings. After setting the sound transmission holes, the sound transmission rate can reach 65%, which greatly improves the existing sound transmission opening rate. Attached Figure Description
[0013] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.
[0014] Figure 1 This is a schematic diagram of the structure of the LED beads on the PCB board in a sound-permeable LED cinema screen that integrates lamp driver and lamp according to the present invention.
[0015] Figure 2 This is a schematic diagram of the acoustically transparent LED cinema screen that integrates lamp and driver functions according to the present invention.
[0016] Figure 3 This is a schematic diagram of the control circuit in the acoustically transparent LED cinema screen that integrates lamp and driver functions according to the present invention. Detailed Implementation
[0017] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. Preferred embodiments of this application are shown in the drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this application.
[0018] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.
[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0020] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
[0021] Please see Figure 1 and Figure 2 The present invention provides a sound-permeable LED cinema screen with integrated lamp and driver, including lamp beads 1, driver chip, PCB board 2, and HUB board. The lamp beads 1 are disposed on the PCB board 2, the driver chip is disposed inside the lamp beads 1, and the HUB board is disposed on the PCB board.
[0022] In one embodiment, the LED beads 2 are arranged in a horizontal array with a first rotation angle on the PCB board 1, and the first rotation angle may be, but is not limited to, 45 degrees (e.g., ...). Figure 1 (As shown). The PCB board 1 also includes a connector 3, which is arranged on the same side of the PCB board 1 as the HUB board (not shown in the figure), possibly on the left side. The PCB board 1 has sound-permeable holes 4, located between the upper and lower rows of LED beads. Except for the sides where the connector and HUB board are located and the positions of the LED beads, the PCB board 1 is perforated. Horizontally, the LED beads are connected 5 through the unperforated portions of the PCB board; vertically, several LED beads are connected 6 through the unperforated portions of the PCB board. The LED board with the sound-permeable holes resembles a mask structure, reducing the PCB board's coverage area and increasing the area of the sound-permeable holes. Each LED bead includes at least three light-emitting chips: a red light-emitting chip, a green light-emitting chip, and a blue light-emitting chip. Other colored light-emitting chips can be added to improve the display effect and quality of the LED display screen.
[0023] Please see Figure 3 , Figure 3This is the circuit diagram of the LED display screen in this invention. Specifically, LED1-LED21 (a total of 21 LEDs) are LED beads with integrated lamp driver. CLK is the data clock signal, which also provides a synchronization clock to LED1-LED21. Data1 is the data signal, responsible for transmitting data from LED1-LED21. CS1 is the control signal. After the data transmission of LED1-LED7 is completed, LED1 controls LED8 to start transmitting data from LED8-LED14. After the data transmission of LED14 is completed, LED8 controls LED15 to start transmitting data from LED15-LED21.
[0024] This invention utilizes a combined lamp-driver packaging technology to encapsulate the driver control chip and LED beads together. Conventional driver control chips integrate multiple channels, while the combined lamp-driver chip only needs to control a single pixel. Therefore, the single-pixel driver control circuit and the single-pixel LED light-emitting wafer can be packaged within a single device. Each combined lamp-driver LED bead is then arrayed and mounted on a sound-transparent PCB, forming a sound-transparent LED light board. While typical LED displays use a horizontal array scheme, assembling the LEDs on the PCB of the LED display light board, this design achieves higher sound transmission and ease of manufacturing. The LED beads are arranged at a 45-degree angle. The sound-transparent LED light board only contains the combined lamp-driver LEDs and connectors for signal and power transmission. During PCB design, the placement of other components does not need to be considered, thus achieving a sound transmission aperture ratio of 60% or higher.
[0025] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0026] It should be noted that while the preferred embodiments of the present invention are provided in the specification and accompanying drawings, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are not intended to impose additional limitations on the content of the present invention; their purpose is to provide a more thorough and comprehensive understanding of the disclosure of the present invention. Furthermore, the above-described technical features can be combined with each other to form various embodiments not listed above, all of which are considered to be within the scope of the present invention specification. Moreover, those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.
Claims
1. A sound-transparent LED cinema screen with integrated lamp, comprising a lamp bead, a driving chip, a PCB board, and a HUB board, characterized in that, The driver chip is disposed inside the LED bead, the LED bead is disposed on the PCB board, and the HUB board is disposed on the PCB board.
2. The acoustically transparent LED cinema screen in combination with a light driver of claim 1, wherein, The LEDs are arranged in a horizontal array with a first row of rotation angles on the PCB board.
3. The self-powered, acoustically transparent LED cinema screen of claim 2, wherein, The first rotation angle is 45 degrees.
4. The self-powered, acoustically transparent LED cinema screen of claim 3, wherein, The PCB board also includes connectors.
5. The acoustically transparent LED display of claim 4, wherein, The connector and the HUB board are arranged on the same side of the PCB board.
6. The acoustically transparent LED display of claim 5, wherein, The PCB board is provided with sound-permeable holes, which are located between the upper and lower rows of LED beads.
7. The acoustically transparent LED display of claim 6, wherein, Except for the sides where the connector and the HUB board are located and the positions of the LED beads, the PCB board has cutouts. The horizontal LED beads are connected through the uncut parts of the PCB board, and the vertical LED beads are connected through the uncut parts of the PCB board at intervals.
8. The acoustically transparent LED display of claim 1, wherein, The LED bead includes at least three light-emitting chips, namely a red light-emitting chip, a green light-emitting chip, and a blue light-emitting chip.