Light emitting diode device and light emitting diode package

Abstract

The invention relates to a light emitting diode device and a light emitting diode package. There is provided a light emitting diode (LED) device including: a circuit board; a plurality of light emitting diode packages arranged on the circuit board, the LED packages including: a plurality of groups of red, green, and blue (RGB) LEDs; and an infrared LED, the ratio of the plurality of sets of RGB LEDs to the infrared LED being at least 2: 1; and an electrical connector connected to the LEDs of the plurality of LED packages, the electrical connector configured to communicate with an image providing device.

Description

Technical Field

[0001] The present description relates generally to light emitting diode displays and, more particularly, to a light emitting diode display having a light emitting diode package with multiple groups of red, green, and blue LEDs and an infrared LED in a ratio of at least 2 to 1. Background Art

[0002] Light-emitting diode (LED) displays used in cinemas utilize passively driven LEDs, which can result in unpleasant flicker, especially in low-light conditions. Furthermore, achieving certain color spaces with LED displays is challenging. Furthermore, projection cinema systems employ audio located behind the screen to achieve an immersive center channel. In contrast, LED displays used in cinemas face challenges in achieving comparable immersive audio and typically employ more complex audio steering or bouncing technology.

[0003] Similarly, in some cases, LED displays may be adapted for use in simulator environments, and in certain types of simulator environments, night vision goggles (NVGs) may be used, for example to simulate the use of NVGs in real-world environments. Adapting LED displays for such simulator environments presents particular challenges. Summary of the Invention

[0004] In one aspect, a light emitting diode (LED) device is provided, comprising: a circuit board; a plurality of light emitting diode (LED) packages, the plurality of LED packages being arranged on the circuit board, the LED packages comprising: a plurality of groups of red, green, and blue (RGB) LEDs; and infrared LEDs, the ratio of the plurality of groups of RGB LEDs to the infrared LEDs being at least 2 to 1; and an electrical connector connected to the LEDs of the plurality of LED packages, the electrical connector being configured to communicate with an image providing device.

[0005] In another aspect, a light emitting diode (LED) package is provided, comprising: a plurality of groups of red, green, and blue (RGB) LEDs; and an infrared LED, wherein the ratio of the plurality of groups of RGB LEDs to the infrared LED is at least 2 to 1. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] For a better understanding of the various examples described herein and to more clearly illustrate how they may be implemented, reference will now be made, by way of example only, to the accompanying drawings, in which:

[0007] Figure 1ADepicted is a front-side schematic diagram of an example light emitting diode (LED) display according to the prior art.

[0008] Figure 1B Describes the prior art Figure 1A Schematic diagram of the back side of an example LED display.

[0009] Figure 2A Depicted is a front-side schematic diagram of an example LED display having a light emitting diode pair and an integrated circuit in its LED package.

[0010] Figure 2B Depicts Figure 2A Schematic diagram of the back side of an example LED display.

[0011] Figure 3 Depicts Figure 2A Schematic diagram of the front side of an LED package of an example light emitting diode display.

[0012] Figure 4 Depicts Figure 3 Schematic diagram of the back side of the LED package.

[0013] Figure 5 Depicted is shown by Figure 3 Figure 2 is a graph of example wavelengths of LED emission from an LED package.

[0014] Figure 6 Describes the Figure 1A and Figure 1B LED display or with Figure 2A and Figure 2B Schematic diagram of the front side of an example alternative LED package for use with an LED display and including multiple groups of RGB LEDs and infrared LEDs and an optional integrated circuit.

[0015] Figure 7 Describes when Figure 6 Example of an alternative LED package that does not include an integrated circuit Figure 6 Schematic diagram of the back side of an example alternative LED package.

[0016] Figure 8 Describes when Figure 6 Example of an alternative LED package that does not include an integrated circuit for driving in a row configuration Figure 6 An example of an alternative LED package LED circuit.

[0017] Figure 9 Describes when Figure 6 Example of an alternative LED package that does not include an integrated circuit for driving in a column configuration Figure 6 An example of an alternative LED package LED circuit.

[0018] Figure 10 Depicted is a front side schematic diagram of an example alternative LED package having a light emitting diode pair, an integrated circuit, and an infrared LED.

[0019] Figure 11 Depicted is a front side schematic diagram of an example alternative LED package having multiple groups of light emitting diode pairs, infrared LEDs, and an optional integrated circuit.

[0020] Figure 12A Depicts two serially connected Figure 4 A rear side of an LED package of the embodiment of the present invention is provided, wherein a fault is detected at a serial input contact detected at a second LED package of the serially connected LED packages.

[0021] Figure 12B Depicts Figure 12A The invention provides a series-connected LED package, wherein a first LED package of the series-connected LED package is bypassed via a bypass contact of a second LED package of the series-connected LED package. DETAILED DESCRIPTION

[0022] Light-emitting diode (LED) displays for cinemas face many challenges due to the use of passively driven LEDs (which can cause flicker, especially in low brightness conditions), as well as in achieving certain color spaces used in cinemas (such as the ITU-R (International Telecommunication Union Radiocommunication) Recommendation BT (Broadcast Television) 2020 color space (hereinafter interchangeably referred to as REC2020)) and audio performance.

[0023] In some cases, LED displays may be adapted for use in simulator environments, and in certain types of simulator environments, night vision goggles (NVGs) may be used, for example, to simulate the use of NVGs in real-world environments.

[0024] Currently available LED displays can provide flicker-free operation, REC2020 color space support, integrated circuits (ICs) integrated with the LED packages of the LED display, and audio transparency.

[0025] Currently available LED displays include multiple LED packages, and a given LED package typically includes two sets of red, green, and blue (RGB) LEDs that are configured to respectively emit light at different wavelengths for a six-primary color system (e.g., using any suitable wavelength shifting mechanism) and can provide REC2020 color space support. The given LED package also includes an integrated circuit (IC) to drive the six LEDs of the given LED package; such integration can simplify the printed circuit board assembly (PCBA) of the given LED package, but also allow perforations to support audio transparency, thereby enhancing the overall movie experience.

[0026] Specifically, the LED package provided herein includes two sets of RGB LEDs. Each pair of LEDs of a given color can be at different wavelengths, such that the LED package can emit two red wavelengths, two green wavelengths, and two blue wavelengths. This allows the LED package to emit six primary colors, which can be used to expand the color space of the LED package compared to when the LED package includes a single set of RGB LEDs. For example, the LED package provided herein can provide support for the REC2020 color space.

[0027] Alternatively or additionally, a plurality of such LED packages including six primary colors (e.g., two red, two green, and two blue) can be integrated into an LED display that can operate in a three-dimensional (3D) mode, for example for use with 3D glasses that include notch filters in the left and right lenses to receive different sets of RGB light wavelengths, thereby avoiding the use of low visual fidelity and / or low visual clarity polarized 3D glasses (and polarizers at the LED display), and / or expensive active shutter 3D glasses, thereby providing a more comfortable and immersive viewing experience.

[0028] Integrating LED driver ICs into LED packages (e.g., one IC per LED package) can reduce the complexity of PCBAs and the attendant manufacturing costs. For example, current LED packages can be manufactured using as few as two printed circuit boards (PCBs).

[0029] This reduction in LED package complexity (e.g., relative to when an external IC is used to drive the LEDs of multiple LED packages) can allow for perforations in the supporting circuit board, which makes the circuit board transparent to audio so that sound from speakers mounted behind an LED display according to this example passes through the LED display, thereby enhancing synchronization of visual and auditory elements in a theater environment using the LED display. Such an IC integrated with the LED package can include a bypass input for redundancy in the event of an upstream pixel failure.

[0030] The LED displays provided herein may be used in digital cinema environments, entertainment venues that may require a high-quality RGB LED display, and / or any application and / or environment that may require advanced color reproduction, passive 3D visualization, and / or audio transparency.

[0031] The presently provided LED displays can also be adapted for use in a simulator environment with or without an IC integrated into its LED package.

[0032] One aspect of the present specification provides a device comprising: a circuit board; a plurality of light emitting diode (LED) packages arranged on the circuit board, the LED packages comprising: a pair of red LEDs arranged adjacent to each other, the pair of red LEDs being configured to emit corresponding red light at corresponding different red wavelengths; a pair of green LEDs arranged adjacent to each other, the pair of green LEDs being configured to emit corresponding green light at corresponding different green wavelengths; a pair of blue LEDs arranged adjacent to each other, the pair of blue LEDs being configured to emit corresponding blue light at corresponding different blue wavelengths; and an integrated circuit (IC) configured to independently control the pair of red LEDs, the pair of green LEDs, and the pair of blue LEDs; and an electrical connector connected to the corresponding integrated circuits of the plurality of LED packages, the electrical connector being configured to communicate with an image providing device.

[0033] Another aspect of the present specification provides a light emitting diode (LED) package, which includes: a pair of red LEDs arranged adjacent to each other, the pair of red LEDs configured to emit corresponding red light at corresponding different red wavelengths; a pair of green LEDs arranged adjacent to each other, the pair of green LEDs configured to emit corresponding green light at corresponding different green wavelengths; a pair of blue LEDs arranged adjacent to each other, the pair of blue LEDs configured to emit corresponding blue light at corresponding different blue wavelengths; and an integrated circuit (IC) configured to independently control the pair of red LEDs, the pair of green LEDs and the pair of blue LEDs.

[0034] Another aspect of the present specification provides a device comprising: a circuit board; a plurality of light emitting diode (LED) packages arranged on the circuit board, the LED packages comprising: multiple groups of red, green, and blue (RGB) LEDs; and infrared LEDs, the ratio of the multiple groups of RGB LEDs to the infrared LEDs being at least 2 to 1; and an electrical connector connected to the LEDs of the multiple LED packages, the electrical connector being configured to communicate with an image providing device.

[0035] Another aspect of the present disclosure provides a light emitting diode (LED) package including: multiple groups of red, green, and blue (RGB) LEDs; and infrared LEDs, the ratio of the multiple groups of RGB LEDs to the infrared LEDs being at least 2 to 1.

[0036] First focus Figure 1A and Figure 1B , which depict the front and back sides of an example light emitting diode (LED) display 100 according to the prior art, respectively. The LED display 100 includes a circuit board 102 on which a plurality of LED packages 104 are mounted on the front side, such as Figure 1A Although only one LED package 104 is indicated, it is understood that the LED display 100 includes eight rows of LED packages 104, with ten LED packages 104 in a row.

[0037] A given LED package 104 includes one red LED 106R, one green LED 106G, and one blue LED 106B. Hereinafter, LEDs 106R, 106G, and 106B are interchangeably referred to as LEDs 106, and are generally referred to as LEDs 106. This convention will be used throughout this specification.

[0038] Thus, a given LED package 104 emits one red wavelength, one green wavelength, and one blue wavelength, but it should be understood that such emission of red, green, or blue light can be within a given wavelength range, centered around a particular red, green, or blue wavelength. Thus, hereinafter, reference to an LED 106 emitting one wavelength of light includes such a wavelength range; similarly, hereinafter, reference to two LEDs 106 emitting different wavelengths of the same given color includes two LEDs 106 emitting the same given color within different wavelength ranges that may not overlap.

[0039] On the rear side of the LED display 100, as Figure 1B As best shown, the LED display 100 includes a plurality of ICs 108, each IC 108 being used to drive a corresponding LED 106 of a plurality of LED packages 104. Specifically, the number of ICs 108 is less than the total number of LED packages 104, such that a given IC 108 drives a plurality of LEDs 106 of a plurality of LED packages 104.

[0040] In other words, one IC 108 is used to drive the grid of LED packages 104 so that the LED packages 104 typically form a passive matrix, and therefore, line scanning is typically used to drive the LEDs 106 of the LED packages 104, which inherently causes line flicker.

[0041] Furthermore, in a particular example, IC 108 may have forty-eight channels to address sixteen RGB LEDs 106 using thirty-two lines, which may require at least eight PCB layers to form circuit board 102. For example, in some examples, the LED driver of IC 108 may address sixteen LEDs (e.g., a 16-channel driver) or forty-eight LEDs (a 48-channel driver), or an even greater number of LEDs using a higher channel count driver. In such an example, the LED driver of IC 108 may be electrically connected to multiple columns and may also be electrically connected to multiple lines (e.g., rows), which may be referred to as line scan groups, which may be as low as four lines or as high as 128 lines, but any suitable number of lines is within the scope of this specification. As the number of physical LEDs connected to IC 108 increases, the more complex the PCB layout for addressing the LEDs becomes. Depending on the LED pixel pitch and the number of columns and lines (e.g., rows), the PCB layout may vary from four to twelve layers.

[0042] Although only one IC 108 is indicated, it should be understood that the LED display 100 includes six rows of ICs 108, with four ICs 108 in one row. Although the connections between the ICs 108 and the LED packages 104 (e.g., and / or LEDs 106) are not depicted for simplicity, and / or the connections between the ICs 108 and the LED packages 104 (e.g., and / or LEDs 106) may be internal to the circuit board 102, it should be understood that such connections still exist. Furthermore, although a given number of ICs 108 are depicted relative to a corresponding given number of LED packages 104, the actual number of ICs 108 may depend on the number of LED drivers for the ICs 108, as described above. In other words, it should be understood that this description encompasses any suitable number of ICs 108 relative to a corresponding given number of LED packages 104, as well as such a suitable number of ICs 108.

[0043] Furthermore, it should be understood that the depicted LED display 100 may typically include millions of LED packages 104, e.g., to achieve a given resolution of an image formed by the LED display 100, with one LED package 104 per pixel of the given resolution, with the number of ICs 108 being adapted accordingly.

[0044] like Figure 1BAs shown, the LED display 100 also includes an electrical connector 110 located on the rear side. Although the connection between the electrical connector 110 and the IC 108 is not depicted for simplicity, and / or the connection between the electrical connector 110 and the IC 108 can be internal to the circuit board 102, it should be understood that such a connection still exists. It should be understood that the electrical connector 110 can be used to connect the IC 108 to an external image providing device (such as an image generator and / or an image playback device and / or a video playback device) that generates and / or plays images and / or generates and / or plays videos rendered by the LEDs 106 of the LED display 100.

[0045] Thus, the color space of LED display 100 is limited by the wavelength of LEDs 106, and furthermore, since the number of PCBs used to manufacture LED display 100 can be eight or more, manufacturing can be challenging (at least due to the complexity of connecting IC 108 to LED package 104).

[0046] First focus Figure 2A and Figure 2B , which depict the front and back sides, respectively, of an example light emitting diode (LED) display 200 according to the present example.

[0047] The LED display 200 includes a circuit board 202, on the front side of which a plurality of LED packages 204 are mounted. Figure 2A Although only one LED package 204 is shown, it should be understood that the LED display 200 includes eight rows of LED packages 204, with one row having ten LED packages 204. A given LED package 204 includes a pair of red LEDs 206R-1, 206R-2, a pair of green LEDs 206G-1, 206G-2, and a pair of blue LEDs 206B-1, 206B-2, as well as an IC 208.

[0048] Hereinafter, red LEDs 206R-1 and 206R-2 are collectively and interchangeably referred to as red LEDs 206R, and are generally referred to as red LEDs 206R. Similarly, green LEDs 206G-1 and 206G-2 are collectively and interchangeably referred to as green LEDs 206G, and are generally referred to as green LEDs 206G. Similarly, blue LEDs 206B-1 and 206B-2 are collectively and interchangeably referred to as blue LEDs 206B, and are generally referred to as blue LEDs 206B. Similarly, LEDs 206R, 206G, and 206B are collectively and interchangeably referred to as LEDs 206, and are generally referred to as LEDs 206.

[0049] The following will also refer to Figure 3 andFigure 4 , which depict the front and back sides, respectively, of an example LED package 204 according to the present example.

[0050] Specifically, the LED display 200 includes a plurality of LED packages 204 arranged on a circuit board 202. Figure 3 , the example LED package 204 includes: a pair of red LEDs 206R arranged adjacent to each other, the pair of red LEDs 206R being configured to emit corresponding red light at corresponding different red wavelengths; a pair of green LEDs 206G arranged adjacent to each other, the pair of green LEDs 206G being configured to emit corresponding green light at corresponding different green wavelengths; and a pair of blue LEDs 206B arranged adjacent to each other, the pair of blue LEDs 206B being configured to emit corresponding blue light at corresponding different blue wavelengths.

[0051] Specifically, the LEDs 206 can be arranged adjacent to each other, such that a pair of red LEDs 206R can be arranged adjacent to each other in a row, a pair of green LEDs 206G can be arranged adjacent to each other in a row, and a pair of blue LEDs 206B can be arranged adjacent to each other in a row. However, the LEDs 206 can alternatively be arranged in respective columns. However, in general, a given LED 206 can be adjacent to LEDs 206 of the same color so that the same colors (albeit different wavelengths) can have similar geometric characteristics relative to a viewer of the LED display 200.

[0052] In addition, refer again Figure 3 The example LED package 204 further includes an integrated circuit (IC) 208 configured to independently control a pair of red LEDs 206R, a pair of green LEDs 206G, and a pair of blue LEDs 206B. Details of the LEDs 206 are described below.

[0053] While the connections between the IC 208 and LEDs 206 of a given LED package 204 are not depicted for simplicity and / or may be internal to a given LED package 204, it is understood that such connections still exist.

[0054] refer to Figure 2B, the LED display 200 also includes an electrical connector 210 located on the rear side. Although the connection between the electrical connector 210 and the IC 208 is not depicted for simplicity, and / or the connection between the electrical connector 210 and the IC 208 can be internal to the circuit board 202, it should be understood that such a connection still exists. It should be understood that the electrical connector 210 can be used to connect the IC 208 to an external image providing device (not depicted) (such as an image generator and / or an image playback device and / or a video playback device), which generates and / or plays images and / or generates and / or plays videos rendered by the LEDs 206 of the LED display 200.

[0055] Specifically, the electrical connector 210 is connected to the respective integrated circuits 208 of the plurality of LED packages 204 , and the electrical connector 210 is configured to communicate with an image providing device (not depicted).

[0056] Although the respective integrated circuits 208 of the plurality of LED packages 204 are depicted as being located on the front side of the respective LED packages 204 , in other examples, one or more (or all) of the respective integrated circuits 208 may be located on the back side of the respective LED packages 204 .

[0057] Furthermore, it should be understood that the depicted LED display 200 may generally include millions of LED packages 204, e.g., to achieve a given resolution of an image formed by the LED display 200, with one LED package 204 per pixel of the given resolution, with the number of ICs 208 being adapted accordingly. While the LED packages 204 are depicted as having a particular shape (e.g., a square) and arrangement configuration, the LED packages 204 may have any suitable shape and arrangement configuration.

[0058] Furthermore, the number of ICs 208 may be the same as the total number of LED packages 204 , such that a given IC 208 drives six LEDs 206 of one LED package 204 .

[0059] Furthermore, it should therefore be understood that a given IC 208 includes six output channels, eg, one output channel per LED 206 .

[0060] Reference again Figure 2A and Figure 2B, the circuit board 202 may also include a perforation 212 therethrough that allows sound to propagate through the circuit board 202. Thus, one or more speakers (not depicted) may be mounted behind the LED display 200, and the perforations 212 may enable sound from the one or more speakers to propagate through the LED display 200 to the audience. However, the perforations 212 may be optional, and conventional sound technology may be used to provide sound to the audience (e.g., such as audio steering or bouncing technology).

[0061] Reference again Figure 2A and Figure 2B The circuit board 202 may further include a through hole 212 passing through the circuit board, the through hole allowing sound to propagate through the circuit board 202, and the through hole may be located between adjacent LED packages 204 outside the area of ​​the electrical connector 210. Specifically, as Figure 2A As best shown, a given through-hole 212 can be located between four adjacent LED packages 204. Although a given number and arrangement of through-holes 212 is depicted, the LED display 200 can include any suitable number and arrangement of through-holes 212.

[0062] In a particular example, the LED display 200 can have dimensions in a range from about 160 mm x 120 mm to about 270 mm x 270 mm, the LED package 204 can have dimensions in a range from about 0.2 mm x 0.2 mm to about 5 mm x 5 mm, and the pixel pitch can be in a range from about 2.5 mm to about 5 mm or more (e.g., and can depend on the size of the LED package 204). In addition, it should be understood that the LED display 200 can be combined with other LED displays 200 and assembled into a larger LED display of any suitable size. For example, LED displays 200 of such dimensions can be tiled together to form a larger LED display (e.g., suitable for theater environments, simulation environments, etc., among other possibilities). In a particular example, the LED display 200 can be about 0.5 meters x about 0.5 meters, the LED package 204 can be about 1 mm x about 1 mm, and the pixel pitch can be about 2.5 mm.

[0063] Next follow Figure 4 , which depicts the back side of the LED package 204. Specifically, Figure 4 Depicted Figure 3 The various contacts of the IC 208 can be connected to the electrical connector 210. Specifically, Figure 4 A serial input contact SI, a serial output contact SO, a bypass contact B, a first voltage contact V1, a second voltage contact V2 and a ground connector G are depicted.

[0064] The serial input SI contact and the serial output SO contact can be used to connect the IC 208 of one LED package 204 to other ICs 208 of other LED packages 204, and a data addressing scheme can be used to control the LEDs 206 of the LED packages 204. For example, each IC 208 of the LED display 200 can be assigned an address, and the image playback device can provide LED driving data for a given address along the connection contacts SI, SO of the LED package 204 via the electrical connector 210. The IC 208 can receive the LED driving data assigned to the given address of the IC 208 and drive the corresponding LED 206 accordingly.

[0065] In some examples, the serial input SI contact and the serial output SO contact can provide a single single-wire serial interface for an external image provider via the electrical connector 210 with a common clock. For example, the serial input SI contact and the serial output SO contact can be used to daisy-chain the ICs 208 of the LED packages 204 in rows and / or columns.

[0066] Alternatively, a two-wire interface may be used with a separate clock, and the data addressing scheme may be adapted accordingly.

[0067] Regardless of whether a single-wire serial interface or a two-wire serial interface is used, the ICs 208 of the plurality of LED packages 204 can be addressable so that the plurality of LED packages 204 are understood to be arranged as an active matrix, so that an external image provider can drive the plurality of LED packages 204 independently of one another. In this way, line scanning is avoided, thereby reducing and / or eliminating line flicker associated with the LED display 100.

[0068] In other words, the LED driving data sent along the single-wire serial interface or the two-wire serial interface for driving the LED 206 of the LED package 204 can be sent along with the corresponding address of the IC 208 and / or LED package 204 that the LED driving data is intended to drive (for example, via an external image providing device).

[0069] As depicted, for example, in the event that one or more of the LEDs 206 fails, the bypass contacts B can be used to bypass the corresponding LED packages 204. For example, briefly focusing on Figure 12A and Figure 12B , which depicts the back side of two serially connected LED packages 204-1, 204-2, the LED packages 204-1, 204-2 respectively including about Figure 4 The contacts are depicted along with the respective ICs 208-1, 208-2 (outlined to indicate that the respective ICs 208-1, 208-2 are located on the front side of the LED packages 204-1, 204-2).Figure 12A and Figure 12B In the example, the serial input SI contact of the first LED package 204-1 receives a signal from the serial output SO contact of the previous LED package 204 (not depicted), and the serial input SI contact of the second LED package 204-2 receives a corresponding signal from the serial output SO contact of the first LED package 204-1; such signals are depicted as single-ended arrows. In addition, the serial output SO contact of the second LED package 204-2 outputs a signal to the serial input SI contact of the next LED package 204 (not depicted).

[0070] Specifically, in Figure 12A In the example, the second IC 208-2 detects that the signal received at the serial input SI contact of the second LED package 204-2 is unstable and / or missing, as indicated by the term "fault" on the signal received at the serial input SI contact of the LED package 204-2. In fact, in such an example, it should be understood that although Figure 12A , a signal is depicted received at the serial input SI contact of the second LED package 204-2, but such a signal may be lost. Furthermore, it should be understood that such a fault detected at the serial input SI contact of the second LED package 204-2 may be caused by a fault in the first IC 208-1 of the first LED package 204-1 (as depicted).

[0071] So, and refer to Figure 12B , IC 208-2 can disconnect the serial input SI contact of LED package 204-2 from the serial output SO contact of LED package 204-1, and connect the serial input SI contact of LED package 204-1 to a bypass from the serial output SO contact of LED package 204-1 to the bypass B contact of a second LED package 204-2, for example by opening and closing a switch between the various contacts on the existing connection therebetween.

[0072] Alternatively or additionally, the ICs 208 of the LED packages 204 can communicate (e.g., and this can include communicating with the ICs 208 of the LED packages 204 from which the ICs 208 receive signals at the serial input SI contacts of the first LED package 204-1) such that the signals received at the serial input SI contacts of the first LED package 204-1 are redirected to the bypass B contacts of the second LED package 204-2, which are processed to drive the LEDs 206 of the second LED package 204-2. In practice, such communication can occur to bypass any LED package 204 that detects a fault, etc., using the bypass B contacts.

[0073] In other words, because a fault signal is detected at the serial input SI contact of the second LED package 204-2, the bypass B contact of the second LED package 204-2 can be used to bypass the first (e.g., previous) LED package 204-1 in the chain of serially connected LED packages 204. In fact, this example illustrates that the connection between the corresponding contacts can include any suitable type and / or number of connections, and such connections can be via the corresponding IC 208. Moreover, such connections can be opened (disconnected) or closed (connected) by the corresponding IC 208, for example, via any suitable number of switches controlled by the corresponding IC 208.

[0074] Back to Figure 4 , the external image display device can provide two separate LED voltages to contacts V1 and V2 via electrical connector 210, where the first contact V1 connects a first voltage from electrical connector 210 to green LED 206G and blue LED 206B, and the second contact V2 connects a second voltage from electrical connector 210 to red LED 206R. The second voltage can be lower than the first voltage because red LEDs generally tend to be driven at a lower voltage than green and blue LEDs, which tend to be driven at the same or similar voltages. Furthermore, the voltage can be supplied by the external image providing device via electrical connector 210 or any other suitable device (e.g., the same or different voltage providing device as the external image providing device).

[0075] Although Figure 4 A particular number and arrangement of connections to IC 208 is depicted, but it should be understood that the number and arrangement of connections to IC 208 may be any suitable number and / or arrangement and / or configuration.

[0076] Furthermore, it should be appreciated that due to the simplified connection of the electrical connector 210 to the IC 208 relative to the connection of the IC 108 to the circuit board 102 of the LED display 100, the circuit board 202 of the LED display 200 may require as few as two PCB layers, which allows for more relatively unused PCB area. This unused PCB area can enable a density of through-holes 212, thereby achieving the aforementioned acoustic transparency of the speaker through the circuit board 202.

[0077] Furthermore, since the number of PCB layers is reduced relative to the circuit board 102 of the LED display 100 , the circuit board 202 may be formed of a flexible material so that the LED display 200 may be curved, etc.

[0078] Furthermore, it will be appreciated that the two PCB layers of circuit board 202 are easier to assemble than the eight PCB layers of circuit board 102 .

[0079] Next attention is drawn to Figure 5 which depicts a plot 500 showing example wavelengths emitted by the LEDs 206.

[0080] For example, as depicted, the first red LED 206R-1 can emit red light at a first red wavelength 502R-1, and the second red LED 206R-2 can emit red light at a second red wavelength 502R-2 (e.g., multiple red wavelengths 502R and / or a red wavelength 502R). It will be appreciated that the red wavelengths 502R are generally in the “red” wavelength region, such as between about 620 nm to about 750 nm.

[0081] Similarly, as depicted, the first green LED 206G-1 can emit green light at a first green wavelength 502G-1, and the second green LED 206G-2 can emit green light at a second green wavelength 502G-2 (e.g., multiple green wavelengths 502G and / or a green wavelength 502G). It will be appreciated that the green wavelengths 502G are generally in the “green” wavelength region, such as between about 495 nm to about 570 nm.

[0082] Similarly, as depicted, the first blue LED 206B-1 can emit blue light at a first blue wavelength 502B-1, and the second blue LED 206B-2 can emit blue light at a second blue wavelength 502B-2 (e.g., multiple blue wavelengths 502B and / or a blue wavelength 502B). It will be appreciated that the blue wavelengths 502B are generally in the “blue” wavelength region, such as between about 380 nm to about 495 nm.

[0083] In particular, the exact values of the wavelengths 502R, 502G, 502B can be selected so that the LEDs 206 in combination define a color gamut of a given color space, such as the REC2020 color space, among other possibilities.

[0084] Further, as depicted, the red wavelength pair 502R, the green wavelength pair 502G, and the blue wavelength pair 502B can each be separated peak-to-peak by about 20 nm, for example, so that the LED display 200 can operate in a 3D mode, with the corresponding left lens of the 3D glasses configured to transmit the wavelengths 502R-1, 502G-1, 502B-1, respectively, while blocking or reflecting the wavelengths 502R-2, 502G-2, 502B-2, and the corresponding right lens of the 3D glasses configured to transmit the wavelengths 502R-2, 502G-2, 502B-2, respectively, while blocking or reflecting the wavelengths 502R-1, 502G-1, 502B-1 (or vice versa), for example.

[0085] Such wavelength separation may be achieved in any suitable manner, including but not limited to using quantum dots incorporated into LED 206 during its fabrication, epitaxially growing LED 206 during its fabrication, and other possibilities.

[0086] In this way, the LED display 200 can operate in at least two modes: a first mode including an extended color gamut mode, in which the red wavelength pair 502R, the green wavelength pair 502G, and the blue wavelength pair 502B can be used to define the REC2020 color space, etc.; and a second mode including a 3D mode, in which the red wavelength pair 502R, the green wavelength pair 502G, and the blue wavelength pair 502B can be used to provide left and right 3D images, etc., but in a reduced color gamut relative to the extended color gamut mode.

[0087] In other words, the respective different red wavelengths 502R, the respective different green wavelengths 502G, and the respective different blue wavelengths 502B may be selected to satisfy the ITU-R (International Telecommunication Union - Radiocommunication Sector) recommendation BT (Broadcast Television).2020 color space.

[0088] Alternatively or additionally, the respective different red wavelengths 502R, the respective different green wavelengths 502G, and the respective different blue wavelengths 502B can each be selected to be at least 20 nm apart so that the LED display 200 can operate in a 3D mode.

[0089] Thus, when the LED display 200 is installed in, for example, a theater environment, the LED display 200 can operate in a first mode or a second mode depending on whether the video provided to the LED display 200 includes images and / or video in the REC2020 color space or 3D images and / or 3D video. Thus, the LED package 204 provides versatility in presenting images and / or video.

[0090] Other types of LED packages are within the scope of this description.

[0091] For example, some LED displays may be used in transportation simulators, including but not limited to avionics simulators, land vehicle simulators, aquatic vehicle simulators, etc. In some types of simulators, night vision goggles (NVGs) may be used, for example, to simulate the use of NVGs in a real-world environment. However, reference Figure 5 , the RGB LEDs provided herein typically do not emit infrared (IR) light that is detected and presented by the NVG.

[0092] Furthermore, it has been heuristically determined that IR images in simulators used with NVGs generally do not require the same spatial resolution as RGB images.

[0093] Thus, another example LED package is provided herein that includes an IR LED and multiple groups of RGB LEDs. The multiple groups of RGB LEDs can be used to form an RGB image within a wavelength range visible to humans (e.g., from about 380 nm to about 750 nm) without utilizing an NVG, and the IR LEDs can be used to provide a corresponding lower-resolution IR image that can be detected by the NVG. Since the RGB LED groups will generally correspond to pixels of the RGB image, and since the IR LEDs will generally correspond to pixels of the corresponding IR image, it should be understood that, given a ratio of "N" RGB LED groups to one IR LED in a given LED package, the RGB image will generally have a resolution and / or number of pixels that is N times the resolution of the corresponding IR image.

[0094] For example, follow Figure 6 , which depicts the Figure 1A and Figure 1B LED display 100 or with Figure 2A and Figure 2B The front side of the alternative LED package 604 used with the LED display 200. However, as will be described herein, when the LED package 604 is used with Figure 1A and Figure 1B When used with the LED display 100, the LED package 604 may not include a corresponding IC, and when the LED package 604 is used with Figure 2A and Figure 2B When used with the LED display 200 , the LED package 604 may include a corresponding IC.

[0095] In other words, the LED package 604 can be a component of a device (e.g., LED display 100 or LED display 200) that includes: a circuit board (e.g., circuit board 102 or circuit board 202); a plurality of light emitting diode (LED) packages 604 arranged on the circuit board; and an electrical connector (e.g., electrical connector 110 or electrical connector 210) connected to the LEDs of the plurality of LED packages 604, the electrical connector being configured to communicate with an image providing device, as described above.

[0096] Specifically, as depicted, LED package 604 includes: a first group of red LEDs 606R-1, green LEDs 606G-1, and blue LEDs 606B-1; a second group of red LEDs 606R-2, green LEDs 606G-2, and blue LEDs 606B-2; a third group of red LEDs 606R-3, green LEDs 606G-3, and blue LEDs 606B-3; and a fourth group of red LEDs 606R-4, green LEDs 606G-4, and blue LEDs 606B-4.

[0097] The first group of LEDs 606R-1, 606G-1, and 606B-1 are collectively and interchangeably referred to below as the first group of LEDs 606-1. The second group of LEDs 606R-2, 606G-2, and 606B-2 are collectively and interchangeably referred to below as the second group of LEDs 606-2. The third group of LEDs 606R-3, 606G-3, and 606B-3 are collectively and interchangeably referred to below as the third group of LEDs 606-3. The fourth group of LEDs 606R-4, 606G-4, and 606B-4 are collectively and interchangeably referred to below as the fourth group of LEDs 606-4.

[0098] The red LEDs 606R-1, 606R-2, 606R-3, 606R-4 are hereinafter interchangeably referred to as red LEDs 606R, the green LEDs 606G-1, 606G-2, 606G-3, 606G-4 are hereinafter interchangeably referred to as green LEDs 606G, and the blue LEDs 606B-1, 606B-2, 606B-3, 606B-4 are hereinafter interchangeably referred to as blue LEDs 606B.

[0099] Furthermore, LEDs 606R, 606G, 606B are interchangeably referred to below as LEDs 606 and / or LEDs 606 .

[0100] Red LED 606R, green LED 606G, and blue LED 606B may emit light at respective wavelengths 502R-1, 502G-1, 502B-1 or respective wavelengths 502R-2, 502G-2, 502B-2, or any suitable wavelength within the red, green, and blue wavelength ranges, respectively.

[0101] The IR LED 607 can be configured to emit infrared light in an infrared wavelength range, such as in a range of about 750 nm to about 1000 nm. In a specific example, the IR LED 607 can emit infrared light at about 800 nm.

[0102] Regardless, as depicted, LED package 604 includes multiple sets of red, green, and blue (RGB) LEDs 606 and infrared LEDs 607 in a ratio of at least 2 to 1.

[0103] In other words, although as depicted, the multiple groups of RGB LEDs 606 and infrared LEDs 607 are in a ratio of four to one, the LED package 604 may include as few as two groups of RGB LEDs 606 .

[0104] However, as depicted, at the LED package 604, the groups of RGB LEDs 606 and the infrared LEDs 607 can be in a ratio of four to one, and the groups of RGB LEDs 606 can be located at corresponding corners of a square (e.g., as depicted) or a rectangle, and the infrared LEDs 607 can be located near the center of the square or rectangle.

[0105] However, when the LED package 604 includes two groups of RGB LEDs 606 , the groups of RGB LEDs 606 can be positioned along a line, and the infrared LED 607 can be located approximately midway between the two groups of RGB LEDs 606 along the line.

[0106] However, when the LED package 604 includes three groups of RGB LEDs 606, the groups of RGB LEDs 606 can be located at respective corners of a triangle (eg, an equilateral triangle), and the infrared LED 607 can be located near the center of the triangle.

[0107] In other words, when the LED package 604 includes three or four or more groups of RGB LEDs 606, the multiple groups of RGB LEDs 606 can be located at corresponding corners of corresponding polygons having the same number of sides and corners as the number of LED packages 604, and the infrared LED 607 can be located near the center of the polygon.

[0108] In practice, this symmetry of LEDs 606 and IR LEDs 607 can provide LEDs 606 and IR LEDs 607 with similar geometric characteristics relative to a viewer of an LED display in which LED package 604 is incorporated. This symmetry and / or ratio of LEDs 606 to IR LEDs 607 can provide cost advantages in laying out and manufacturing LED package 604.

[0109] The LED package 604 may or may not include a corresponding integrated circuit 608. Therefore, it should be understood that Figure 6 The integrated circuit 608 depicted in FIG is optional and is therefore depicted in dashed lines.

[0110] When the LED package 604 does not include a corresponding integrated circuit 608, the LED package 604 can be integrated into the LED display 100, for example, instead of the LED package 104, and it should be understood that the LEDs 606 and LED 607 of the LED package 604 are driven by the IC 108, which is adapted to drive four groups of RGB LEDs 606 (or any suitable number of groups of RGB LEDs 606) and one IR LED 607 per LED package 604.

[0111] However, when the LED package 604 includes the IC 608 , the LED package 604 may be integrated into the LED display 200 , and it should be understood that the LEDs 606 , 607 of their respective LED packages 604 are driven by the respective IC 608 .

[0112] In other words, when the LED package 604 includes the IC 608, the IC 608 can be configured to independently control multiple groups of RGB LEDs 606 and infrared LEDs 607, and the electrical connector 210 of the LED display 200 can be connected to the LEDs 606 and LEDs 607 of the multiple LED packages 204 of the LED display 200 via the corresponding integrated circuits 608 of the multiple LED packages 604.

[0113] Examples will now be described in which the LED package 604 does not include the IC 608. In these examples, the group of RGB LEDs 606 can be driven in a passive matrix format using one or more of the ICs 208 adapted to drive the group of RGB LEDs 606 of the LED package 604 in either a row or column configuration.

[0114] Specifically, to reduce the input / output signals used to illuminate the depicted groups of RGB LEDs 606 and IR LEDs 607, in some examples, only two groups of RGB LEDs 606 (e.g., two RGB pixels) can be driven and / or illuminated simultaneously in a row configuration (e.g., horizontally) or in column nodes (e.g., vertically), while the IR LEDs 607 are controlled independently.

[0115] For example, follow Figure 7 , which depicts when the LED package 604 does not include the IC 608 Figure 6 The rear side of the LED package 604. Specifically, Figure 7Nine example contacts to LEDs 606 and 607 are depicted, labeled R13, G13, B13, C13, R24, G24, B24, C24, C5, and IR5. Depending on the circuitry of the LED package 604, such contacts can be used to drive the RGB LEDs 606 in a row configuration or column nodes and to drive the IR LEDs 607 independently of the RGB LEDs 606.

[0116] For example, follow Figure 8 , which depicts a circuit 800 that can be embedded in an LED package 604, showing connections from nine contacts R13, G13, B13, C13, R24, G24, B24, C24, C5, IR5 to an RGB LED 606 and an IR LED 607 to drive the RGB LEDs 606 in a row configuration. Specifically, the LEDs 606 and 607 are depicted as transistors, and the contacts R13, G13, B13, C13, R24, G24, B24, C24, C5, IR5 can be used to drive a pair of RGB LEDs 606-1 and 606-2 or a pair of RGB LEDs 606-3 and 606-4 and an IR LED 607.

[0117] In contrast, the following focuses on Figure 9 , which depicts a circuit 900 that can be embedded in an LED package 604, showing connections from nine contacts R13, G13, B13, C13, R24, G24, B24, C24, C5, IR5 to an RGB LED 606 and an IR LED 607 to drive the RGB LEDs 606 in a column configuration. Specifically, the LEDs 606 and 607 are depicted as transistors, and the contacts R13, G13, B13, C13, R24, G24, B24, C24, C5, IR5 can be used to drive a pair of RGB LEDs 606-1 and 606-3 or a pair of RGB LEDs 606-2 and 606-4 and an IR LED 607.

[0118] Generally, LED package 604 may include circuit 800 or circuit 900 .

[0119] Alternatively, when IC 608 is included in LED package 604, the back side of LED package 604 can be connected to the back side of LED package 604. Figure 4 The back side of the depicted LED package 204 is the same or similar, with contacts SI, SO, B, V1, V2, and G being the same as those in the reference embodiment. Figure 4In these examples, it will be appreciated that any suitable data addressing scheme may be used to individually control LEDs 606 and 607. It will also be appreciated that in these examples, IC 608 is adapted to include at least the same number of outputs as the number of LEDs 606 and 607; for example, referring to FIG. Figure 6 , when the LED package 604 includes four groups of RGB LEDs 606 and an IR LED 607, the IC 608 may include at least thirteen output sections (eg, one for each of the three RGB LEDs 606 for each of its four groups, and the IR LED 607).

[0120] It should also be understood that when the LED package 604 includes the IC 608 , the size of the LED package 604 can be smaller than when the LED package 604 does not include the IC 608 .

[0121] For example, in the depicted example where the LED package 604 does not include the IC 608, the spacing between the groups of RGB LEDs 606 can be approximately 4 mm or less.

[0122] However, in the depicted example where the LED package 604 includes the IC 608, the spacing between the groups of RGB LEDs 606 can be about 1 mm or less.

[0123] When LED package 604 does not include IC 608, the size of LED package 604 is adapted to include circuit 800 or circuit 900. However, when LED package 604 includes IC 608, the size of LED package 604 can be reduced because relatively little space may be required for connections between contacts S1, S0, B, V1, V2, and G and LEDs 606 and 607. Furthermore, in the example where LED package 604 includes IC 608, a circuit board of an LED display (such as LED display 200) into which LED package 604 is integrated may include a through-hole 212 for sound transmission.

[0124] It should also be understood that the LED packages described herein can support flexible assembly methods, accommodating flip-chip and wire-bonded chip types, or a mix of both, within the same LED package. Furthermore, the flip-chip and wire-bonded configurations allow for seamless integration and optimized electrical connections, which can enable efficient control and functionality of each LED channel.

[0125] In addition, while the LED packages described herein may be used in theater and / or simulator environments, at least some of the LED packages described herein may be used in any suitable environment requiring a high-density LED display (e.g., having a pixel pitch less than 2.0 mm) and / or in night vision simulator environments requiring an LED display having an effective resolution less than 4.0 mm and / or in general lighting applications.

[0126] Furthermore, the various features of the LED packages described herein may be combined in any suitable manner.

[0127] For example, reference Figure 10 , depicts the front side of an LED package 1004 that is substantially similar to LED package 204, with like components having like reference numerals, but adapted to include an IR LED 1007. Thus, LED package 1004 can operate in at least three modes.

[0128] For example, the LED package 1004 can operate in a first mode including an extended color gamut mode, wherein the red wavelength pair 502R, the green wavelength pair 502G, and the blue wavelength pair 502B can be used to define a REC2020 color space, or the like.

[0129] Additionally, LED package 1004 can operate in a second mode including a 3D mode, wherein red wavelength pair 502R, green wavelength pair 502G, and blue wavelength pair 502B can be used to provide left and right 3D images, etc., but at a reduced color gamut relative to the extended color gamut mode.

[0130] Furthermore, the LED package 1004 can be operated in a third mode including an IR mode, wherein the IR LED 1007 is used to form an IR image that is the same as or similar to the RGB image formed by the RGB LED 206. Alternatively or additionally, the IR mode can be combined with an extended color gamut mode, wherein the IR LED 1007 is operated simultaneously with the RGB LED 206 operating in the extended color gamut mode. Alternatively or additionally, the IR mode can also be combined with a 3D mode, wherein the IR LED 1007 is operated simultaneously with the RGB LED 206 operating in the 3D mode.

[0131] Alternatively or additionally, similar to LED package 204, LED package 604 can be adapted to include RGB LED pairs. Figure 11 , depicts the front side of an LED package 1104 that is substantially similar to LED package 604 (wherein like components have like reference numerals), but adapted to include a pair of LEDs 606, as described next.

[0132] For example,Figure 11 Depicted and referenced Figure 5 , the group of RGB LEDs 606 includes a first group that includes: a pair of red LEDs 606R-1-1, 606R-1-2, for example, which are configured to emit corresponding wavelengths 502R-1, 502R-2; a pair of green LEDs 606G-1-1, 606G-1-2, for example, which are configured to emit corresponding wavelengths 502G-1, 502G-2; and a pair of blue LEDs 606B-1-1, 606B-1-2, for example, which are configured to emit corresponding wavelengths 502B-1, 502B-2.

[0133] Similarly, the group of RGB LEDs 606 includes a second group that includes: a pair of red LEDs 606R-2-1, 606R-2-2, for example, which are configured to emit corresponding wavelengths 502R-1, 502R-2; a pair of green LEDs 606G-2-1, 606G-2-2, for example, which are configured to emit corresponding wavelengths 502G-1, 502G-2; and a pair of blue LEDs 606B-2-1, 606B-2-2, for example, which are configured to emit corresponding wavelengths 502B-1, 502B-2.

[0134] Similarly, the group of RGB LEDs 606 includes a third group that includes: a pair of red LEDs 606R-3-1, 606R-3-2, for example, which are configured to emit corresponding wavelengths 502R-1, 502R-2; a pair of green LEDs 606G-3-1, 606G-3-2, for example, which are configured to emit corresponding wavelengths 502G-1, 502G-2; and a pair of blue LEDs 606B-3-1, 606B-3-2, for example, which are configured to emit corresponding wavelengths 502B-1, 502B-2.

[0135] Similarly, the group of RGB LEDs 606 includes a fourth group that includes: a pair of red LEDs 606R-4-1, 606R-4-2, for example, which are configured to emit corresponding wavelengths 502R-1, 502R-2; a pair of green LEDs 606G-4-1, 606G-4-2, for example, which are configured to emit corresponding wavelengths 502G-1, 502G-2; and a pair of blue LEDs 606B-4-1, 606B-4-2, for example, which are configured to emit corresponding wavelengths 502B-1, 502B-2.

[0136] The LED package 1104 may or may not include the IC 608. When the LED package 1104 does not include the IC 608, the LED package 1104 may include one of the circuits 800, 900, but adapted to control the 24 RGB LEDs 606 and the IR LED 607 of the LED package 1104, wherein the contacts on the back side of the LED package 1104 are about Figure 7 Specifically, IC 608 may be adapted to include at least the same number of output portions as the number of LEDs 606 and 607.

[0137] When the LED package 1104 includes the IC 608 , the LED package 1104 does not include the circuits 800 , 900 , and the IC 608 is adapted to control the 24 RGB LEDs 606 and the IR LED 607 using any suitable data addressing scheme.

[0138] Like LED package 1004 , LED package 1104 can operate in at least three modes: the aforementioned extended color gamut mode, the aforementioned 3D mode, and the aforementioned IR mode, which can optionally be combined with one or more of the extended color gamut mode and the 3D mode.

[0139] Thus, provided herein are devices and / or LED displays that can include various types of LED packages for use in a theater environment, a simulation environment, and / or any other suitable environment.

[0140] It should also be understood that instances of the term "configured to" (such as "a computing device configured to...", "a processor configured to...", "a controller configured to...", etc.) can be understood to include features of a computer-readable storage medium having program instructions stored thereon, which, when executed by a computing device and / or processor and / or controller, etc., can cause the computing device and / or processor and / or controller to perform a set of operations, which can include the features that the computing device and / or processor and / or controller, etc. is configured to implement. Therefore, the term "configured to" should not be understood to be unduly limited to a means-plus-function interpretation, etc.

[0141] Furthermore, descriptions of one processor and / or controller and / or device and / or engine, etc., configured to perform certain functions are understood to include but are not limited to more than one processor and / or more than one controller and / or more than one device and / or more than one engine, etc., performing such functions.

[0142] It should be understood that for the purposes of this specification, the language of "at least one of X, Y, and Z" and "one or more of X, Y, and Z" can be interpreted as only X, only Y, only Z, or any combination of two or more items X, Y, and Z (e.g., XYZ, XY, YZ, XZ, etc.). Similar logic can be applied to two or more items in any occurrence of the language of "at least one of..." and "one or more of..."

[0143] The terms "about," "substantially," "essentially," "approximately," and the like are defined as "close to," for example, as understood by one skilled in the art. In some examples, the terms are understood to mean "within 10%," in other examples, "within 5%," in still other examples, "within 1%," and in yet other examples, "within 0.5%."

[0144] Those skilled in the art will appreciate that there are yet more alternatives and modifications possible, and that the above examples are merely illustrative of one or more examples. Accordingly, the scope is limited only by the appended claims.

Claims

1. A light emitting diode (LED) device, comprising: circuit boards; A plurality of light emitting diode (LED) packages are arranged on the circuit board, and the LED packages include: Multiple sets of red, green, and blue RGB LEDs; and infrared LEDs, The ratio of the plurality of RGB LEDs to the infrared LEDs is at least 2 to 1; and An electrical connector is connected to the LEDs of the plurality of LED packages, the electrical connector being configured to communicate with an image providing device.

2. The LED device according to claim 1, wherein The LED package further includes an integrated circuit IC configured to independently control the multiple groups of RGB LEDs and the infrared LEDs, and the electrical connector is connected to the LEDs of the multiple LED packages via the corresponding integrated circuits of the multiple LED packages.

3. The LED device according to claim 1, wherein At the LED package, the ratio of the multiple groups of RGB LEDs to the infrared LEDs is four to one, the multiple groups of RGB LEDs are located at corresponding corners of a square or rectangle, and the infrared LEDs are located near the center of the square or rectangle.

4. A light emitting diode (LED) package, comprising: Multiple sets of red, green, and blue RGB LEDs; as well as infrared LEDs, The ratio of the plurality of groups of RGB LEDs to the infrared LEDs is at least 2 to 1. 5 . The LED package according to claim 4 , further comprising an integrated circuit (IC), wherein the IC is configured to independently control the plurality of RGB LED groups and the infrared LED.

6. The LED package according to claim 4, wherein: The ratio of the multiple groups of RGB LEDs to the infrared LEDs is four to one, the multiple groups of RGB LEDs are located at corresponding corners of a square or a rectangle, and the infrared LEDs are located near the center of the square or the rectangle.

Images