2900 results about "LED display" patented technology

The invention relates to an electronic musical instrument ensemble system and an electronic musical instrument playing guiding device. The electronic musical instrument ensemble system comprises an electric musical instrument serving as host equipment and an electric musical instrument serving as slave equipment. Each electric musical instrument is provided with an LED display screen used for indicating a user to activate a corresponding sound induction assembly, each LED display screen comprises a plurality of LED light bars, each LED light bar is formed by a plurality of LED beads which are sequentially arranged at equal intervals from top to bottom, and each LED display screen is electrically connected with a main control circuit board of the corresponding electric musical instrument. Through the electronic musical instrument ensemble system and the electronic musical instrument playing guiding device, a plurality of electronic musical instruments of the same kind or different kinds can be connected, one electronic musical instrument serves the host equipment and controls the LED display screens, used for playing instruction, of other slave equipment, and therefore the purpose of jointly playing the same melody is achieved.

The invention relates to an LED display device based on vertical stacking and a preparation method thereof, the display device comprises a driving backboard and a mother pixel, the mother pixel comprises a plurality of sub-pixels, one of a first type of electrode contact and a second type of electrode contact on the driving backboard is a common-pole contact, and the other one is a non-common-pole contact; the electric connectors comprise common-pole conductive parts and non-common-pole conductive parts, the non-common-pole conductive parts are configured to be electrically connected to the first ends of the corresponding sub-pixels and electrically connected with the corresponding non-common-pole contacts, and the common-pole conductive parts are configured to be electrically connected to the second ends of the sub-pixels and electrically connected with the common-pole contacts to form a common-pole structure; each of the copolar conductive part and the non-copolar conductive part comprises an interconnection conductive part, the interconnection conductive parts are located in the corresponding pixel layers, at least one interconnection conductive part comprises a core body, the core body is a compound semiconductor, and the core body is located in the first inner fence. The invention further discloses a preparation method. The production efficiency and quality of the LED display device can be improved.

A multi-layer display including an upper substrate including light emitting diodes (LEDs) fabricated on a topside of the upper substrate, and LED bonding pads fabricated on a bottomside of the upper substrate. The LED bonding pads being electrically connected to the LEDs through vias extending through the upper substrate. The display also including a lower substrate including LED driver circuits and driver bonding pads fabricated on a topside of the lower substrate. The driver bonding pads being electrically connected to the LED driver circuits, where the LED bonding pads and driver bonding pads are aligned and electrically connected to each other, thereby electrically connecting the LED driver circuits to the LEDs.

The invention relates to an LED display device based on vertical stacking and a preparation method thereof. The display device comprises a driving backboard and a mother pixel, the mother pixel comprises a plurality of sub-pixels, one of a first type of electrode contact and a second type of electrode contact on the driving backboard is a common-pole contact, and the other one of the first type of electrode contact and the second type of electrode contact on the driving backboard is a non-common-pole contact; the non-common-pole conductive pieces are configured to be electrically connected to the first ends of the corresponding sub-pixels and electrically connected with the corresponding non-common-pole contacts, and the common-pole conductive pieces are configured to be electrically connected to the second ends of the sub-pixels and electrically connected with the common-pole contacts to form a common-pole structure; each of the copolar conductive part and the non-copolar conductive part comprises at least one interconnection conductive part, a compound semiconductor region is arranged in the pixel layer where the interconnection conductive part is located, a backfill hole is formed in the compound semiconductor region, and the backfill hole is filled with the interconnection conductive part. The invention further discloses a preparation method. The stability and reliability of the LED display device can be improved, and the LED display device is more convenient to process.

The invention relates to an LED display device based on vertical stacking and a preparation method thereof, the display device is provided with a driving back plate and a mother pixel, the mother pixel comprises a plurality of sub-pixels, the driving back plate comprises a first type of electrode contacts and a second type of electrode contacts, and electric connecting pieces comprise copolar conductive pieces and non-copolar conductive pieces. Each non-copolar conductive piece corresponds to a different sub-pixel; one of the first type of electrode contacts and the second type of electrode contacts is a common-pole contact, and the other one is a non-common-pole contact; the driving backboard comprises a plurality of non-common-pole contacts, the plurality of non-common-pole contacts are divided into at least two ring groups, and each ring group corresponds to different sub-pixels; the non-co-polar conductive members are configured to be electrically connected to the non-co-polar contacts in the ring groups of the respective corresponding sub-pixels, and the co-polar conductive members are configured to be electrically connected to the co-polar contacts to form a co-polar structure. The invention further discloses a preparation method. According to the invention, the problem of overhigh local current density in the display device is effectively improved, and the reliability and stability of the device are effectively improved.

The invention provides an LED display screen interaction method and system supporting voice interaction, and the method comprises the steps: carrying out the voice feature extraction processing through obtaining a continuous voice data stream sent by a user, and obtaining an acoustic feature sequence and a semantic association feature set of a voice segment; and calling a pre-trained voice semantic understanding model to perform joint semantic analysis processing on the acoustic feature sequence and the semantic association feature set, generating a semantic understanding result of the voice segment, and determining a user interaction intention type corresponding to the continuous voice data stream and key information positioning features of the user interaction intention in the voice content based on the semantic understanding result. And generating an LED display control instruction containing an interaction content identifier based on the user interaction intention type and the key information positioning feature, and sending the LED display control instruction to the target LED display screen to execute an interaction display operation. The real intention and key information in the continuous voice of the user can be accurately understood, the accuracy and naturalness of voice interaction between the LED display screen and the user are remarkably improved, and the interaction experience of the user is effectively improved.

The invention presents an advanced soccer training system designed to revolutionize traditional practice methods through a synergy of technology and interactivity. It features an integration of sensors, Artificial Intelligence, and Augmented Reality technologies, providing real-time feedback, immersive simulations, and personalized training experiences. The system promotes skill development via data-driven insights and dynamic training environments, supported by mobile application connectivity for customized training regimens and performance analysis. Additional attributes include energy-efficient design, user-friendly transport mechanisms, and extensive multimedia capabilities like video recording and photo capture for skill review, establishing a novel paradigm in athletic training and development.

The invention belongs to the technical field of LED display, and provides an LED display screen brightness adjusting system and method, and the method comprises the steps: collecting the environment illumination intensity of an LED display screen in real time, judging whether the environment switching occurs or not according to the environment illumination intensity, triggering the brightness adjustment if the environment switching occurs, extracting a basic image frame which is being displayed by the LED display screen, calculating a brightness histogram, and outputting the brightness histogram; dividing a highlight area in the basic image frame according to the brightness histogram, judging whether local suppression is triggered or not, if not, marking the basic image frame as an adjusted image, and if local suppression is triggered, constructing an attenuation compensation iteration mechanism comprising attenuation coefficient dynamic updating and a nonlinear suppression function model, and performing local suppression on the highlight area to obtain a high-brightness image; the method comprises the following steps: acquiring a locally suppressed adjustment image, introducing a gamma parameter generated by adopting a space-time fusion prediction formula, calculating a global brightness adjustment value in combination with the adjustment image and environment illumination intensity, and carrying out global adjustment on the LED display screen.

Disclosed is an LED driver circuit, a multi-wire communication device and a method for an LED display system. The device comprises a controller providing at least one of a configuration data packet, a brightness data packet, and a display data packet; the LED driver circuits, wherein the LED driver circuits are cascaded to provide a first data channel using first data ports and second data ports, the LED driver circuits are connected in parallel to provide a second data channel using third data ports. The device relays an enable signal or an address data packet stage by stage using the first data channel, transmit at least one of the configuration data packet, the brightness data packet and the display data packet in parallel using the second data channel. The number of the cascaded LED driver circuits can be infinite, the number of data wires is reduced, data rate is increased.

The invention relates to an LED display device based on vertical stacking and a preparation method thereof. The display device comprises a driving backboard and a mother pixel, the mother pixel comprises a plurality of sub-pixels, the driving backboard is provided with a first type of electrode contacts and a second type of electrode contacts, electric connecting pieces comprise copolar conductive pieces and non-copolar conductive pieces, and the non-copolar conductive pieces correspond to different sub-pixels respectively; the first type of electrode contacts are non-common-pole contacts, and the second type of electrode contacts are common-pole contacts; the non-common-pole conductive parts are configured to be electrically connected to the first ends of the corresponding sub-pixels and electrically connected with the non-common-pole contacts corresponding to the sub-pixels, and the common-pole conductive parts are configured to be electrically connected to the second ends of the sub-pixels and electrically connected with the common-pole contacts to form a common-pole structure; an annular reflecting layer surrounds the periphery of at least one sub-pixel, and a first insulating layer is further arranged between the side wall of the sub-pixel and the peripheral annular reflecting layer. The invention further discloses a preparation method. The light-emitting effect of the LED display device is improved.

The invention discloses an LED display screen brightness uniformity correction method and system based on current feedback, and relates to the technical field of brightness correction.The method comprises the steps that firstly, a vertical blanking period time sequence empty window is utilized, high-low double-amplitude detection current is injected into LED pixels, and voltage responses in different excitation states are obtained on the premise that normal display is not interfered; then, constructing a state decoupling model based on a reference I-V-T characteristic spectrum, and deeply analyzing coupled electrical signals into independent real-time junction temperature and aging factors by using differential sensitivity characteristics of voltage to temperature and aging; and then, on the basis of the physical state parameters, reverse compensation operation is performed in combination with an original gray instruction and a reference L-I brightness model, and target driving current capable of counteracting thermal quenching and aging attenuation is dynamically deduced. In this way, the correction problem caused by deep coupling of temperature drift and device aging can be effectively solved, and therefore self-adaptive high-precision brightness uniformity correction in the full life cycle of the display screen is achieved.

The invention relates to an LED display device and a preparation method, the LED display device comprises a substrate and a pixel layer, the pixel layer comprises pixel units, the periphery of each pixel unit is at least surrounded by an annular partition groove, each pixel unit is at least partially overlapped with the outermost annular partition groove of the adjacent pixel unit, and the outermost annular partition groove of each pixel unit is at least partially overlapped with the outermost annular partition groove of the adjacent pixel unit. A compound semiconductor is reserved in the non-overlapping area, or a compound semiconductor is reserved between each pixel unit and the outermost annular partition groove of the adjacent pixel unit, so that the pixel units and the adjacent pixel units are completely separated from each other; the top of each pixel unit is electrically connected with the corresponding second-type electrode contact, the bottom of each pixel unit is electrically connected with the corresponding first-type electrode contact, and the second-type electrode contacts are formed on the periphery of the outermost annular partition groove of the corresponding pixel unit. The invention further discloses a preparation method of the LED display device. The heat dissipation capacity of the LED device can be effectively improved, the LED device can emit light stably, and the photoelectric performance and the reliability of the LED display device are guaranteed.

The utility model discloses a modularized fast installation LED display screen unit board which comprises unit board bodies, the unit board bodies are connected through detachable connecting assemblies, and each detachable connecting assembly comprises a first connecting base and a second connecting base. The first connecting base and the second connecting base are fixed to the two unit plate bodies which are connected with each other respectively, a first groove is formed in the first connecting base, a first arc-shaped hole and a second arc-shaped hole which communicate with the first groove are formed in the first connecting base, a first arc-shaped inserting rod is slidably connected into the first arc-shaped hole in a sleeved mode, and a second arc-shaped inserting rod is slidably connected into the second arc-shaped hole in a sleeved mode. A first arc-shaped rack is fixed to one end of the first arc-shaped insertion rod, a second arc-shaped insertion rod is slidably connected into the second arc-shaped hole in a sleeved mode, and a second arc-shaped rack is fixed to one end of the second arc-shaped insertion rod. The first connecting base and the second connecting base are very convenient to disassemble and assemble, and connection is very firm through the first arc-shaped inserting rod and the second arc-shaped inserting rod.

The invention provides a Micro LED display device and a preparation method thereof. The Micro LED display device comprises a driving substrate; each pixel unit comprises a semiconductor multilayer structure in which a second semiconductor layer, a light-emitting layer and a first semiconductor layer are sequentially stacked from bottom to top, and a groove penetrating through the semiconductor multilayer structure is formed between the pixel units; the first reflection structure is formed on the side wall of the groove of each pixel unit and the edge position of the second semiconductor layer, and a conductive opening is formed in the surface of the second semiconductor layer; the bonding metal layer is formed on the conductive opening corresponding to each pixel unit; the bonding glue layer is formed on the periphery of the bonding metal layer; and the ohmic contact structure is of a net structure formed by mutually connecting the metal walls formed on the surfaces of the pixel units and is formed along the grooves between the pixel units, and one metal wall is shared at the joint of every two adjacent pixel units. The problems that a Micro LED is low in luminous efficiency and insufficient in optical collimation are effectively solved.

The invention relates to the technical field of LED display testing, in particular to an LED screen backlight module performance testing system which comprises the steps that a model identification code of a module to be tested is received, a corresponding standard optical parameter set is called, and initial driving current is applied. Actual optical signals driven by different currents are collected through a light sensing probe array and converted into a digital optical measurement value set containing brightness and color coordinate values of multiple sampling points. Comparing the brightness measurement value with a target brightness value point by point to generate a brightness consistency deviation matrix; and judging the color coordinate measurement value and the target range, and generating a color coordinate qualified identifier list. And calculating an actual brightness uniformity value according to the deviation matrix, and comparing the actual brightness uniformity value with a standard threshold value. And if the actual brightness uniformity value reaches the standard and the color coordinates of all the sampling points are qualified, generating a module qualification judgment instruction. According to the system, automatic and high-precision comprehensive evaluation of brightness space uniformity and chromaticity consistency of the backlight module is realized.

The embodiment of the invention discloses a Micro-LED display chip and a preparation method. The Micro-LED display chip comprises a driving panel, a plurality of LED units, a wavelength conversion layer, a lens unit and a plurality of light condensation layers. According to the Micro-LED display chip provided by the embodiment of the invention, the coverage area of the lens unit can be increased by arranging the at least two overlapped light condensation layers on the lens unit, and the lens unit can fully cover the whole pixel region of the Micro-LED display chip, so that the light condensation effect is improved. According to the utility model, more or all light rays are projected through the lens unit, and tiny light rays are collected and focused to a specific area, so that the brightness and definition of pixels are improved; meanwhile, the lens units can better adjust the angle and distribution of light rays, the color uniformity between pixels is improved, and a display picture is brighter and more vivid. Therefore, the contrast ratio of the Micro-LED display chip is improved, the glare and halo effects are reduced, and the Micro-LED display chip can provide clearer and more vivid visual experience.

The invention relates to the technical field of LED display screen driving parameter adjustment, in particular to an LED display screen driving parameter adjustment method and system, and the method comprises the following steps: continuously collecting the operation parameters of each local area of a display screen; calculating the accumulated heat pressure of each local area in real time; when the accumulated heat pressure of the local area is equal to or greater than an early warning threshold value, identifying that the local area is an overheating risk area; the driving parameters of the overheating risk area are adjusted, the adjustment comprises reduction of the peak driving current of the LED lamp beads in the local area or adjustment of the pulse width modulation duty ratio of the peak driving current of the LED lamp beads in the local area, and therefore the instantaneous thermal load of the local area is reduced; and when the actual energy consumption is increased beyond the energy consumption standard, the driving strategy of the local area is optimized by combining the data of the accumulated heat pressure of the local area. The driving parameters are monitored in real time and dynamically adjusted, and energy consumption is optimized, so that the service life of the display screen is prolonged, and the operation stability is improved.

The invention relates to the technical field of display screen defect visual inspection, in particular to an LED display screen defect visual inspection method and system, and the method comprises the following steps: collecting an image of an LED display screen; performing gamma correction and noise suppression on the image of the LED display screen to obtain a preprocessed image; local contrast enhancement and adaptive threshold segmentation are applied to the preprocessed image, and candidate abnormal areas are identified; for the candidate abnormal region, extracting at least one dimension feature which comprises at least one of brightness, color, texture, edge gradient and spectral response; processing the at least one dimension feature based on a preset discrimination rule so as to distinguish real microdefects, optical artifacts and digital artifacts of the LED display screen; and outputting the type, the position and the confidence of the defect obtained by distinguishing. The detection accuracy and reliability are improved.

The invention provides a screen encryption method and device and an LED large screen system, and relates to the technical field of LED large screens, and the screen encryption method comprises the steps: controlling an upper computer to generate a first encryption instruction according to the authority determined by an administrator, transmitting the first encryption instruction to an encryption circuit for data conversion, and generating a corresponding dynamic random password; the dynamic random password is displayed on the LED display module; responding to a dynamic random password input by the user on the upper computer, and generating a corresponding second encryption instruction; determining an instruction similarity between the first encryption instruction and the second encryption instruction; and under the condition that the instruction similarity reaches a similarity threshold value, controlling the encryption circuit to conduct an enabling end of the LED display module so as to allow the LED display module to normally display contents. According to the application, the security of the LED large screen system can be improved, illegal control of the LED display module is prevented, and the legality of the display content is ensured.

The invention discloses an LED display device and a manufacturing method of the LED display device. The LED display device comprises a driving substrate, a first light-emitting assembly and a second light-emitting assembly. The driving substrate comprises a plurality of first pixel power supply electrodes and second pixel power supply electrodes; the first light-emitting component comprises a first light-emitting layer group, a first pixel defining electrode and a second pixel defining electrode, and the first pixel defining electrode is matched with the first light-emitting layer group and the second pixel defining electrode to form a first pixel; the second light-emitting component comprises a second light-emitting layer group, a third pixel defining electrode and a fourth pixel defining electrode, the third pixel defining electrode is matched with the second light-emitting layer group and the fourth pixel defining electrode to form a second pixel, and the second pixel and the first pixel are staggered in the stacking direction of the first light-emitting component and the second light-emitting component. Through the arrangement, the preparation difficulty of the LED chip can be reduced, and the finished product yield of the LED chip is improved.

A device may determine a layout of the reconfigurable modular display. A device may establish local wireless connectivity to accept concurrent connections from client devices without reliance on external networking infrastructure. A device may obtain game-state data from at least one external source via a programmatic interface. A device may render scoreboard graphics according to the layout. A device may present an interactive activity on the reconfigurable modular display and receive spectator inputs via the local wireless connectivity. A device may update the reconfigurable modular display based at least on the game-state data and an aggregation of the spectator inputs.

The invention discloses an LED driving chip and a display driving structure, and relates to the technical field of LED display driving, the LED driving chip is any one of a plurality of LED driving chips cascaded through a data signal line, and the plurality of LED driving chips transmit a frame of data sequence step by step through the data signal line; the LED driving chip extracts the address ADDR from the received data sequence, and performs frame change when the count value of the internal count reaches Z-ADDR; wherein the address of the later-stage LED driving chip is obtained by adding 1 to the address of the previous-stage LED driving chip and then transmitting the data sequence, and the addresses are transmitted according to the sequence of address bits from low to high. When a single-line cascade scheme is applied to the LED driving chip, frame changing synchronization of the multiple LED driving chips can be achieved, the wiring space is saved, the display permeability can be improved, and the LED driving chip has the advantage of being small in frame changing delay.

The invention relates to the technical field of image enhancement, in particular to a Micro-LED-based virtual reality VR image recognition method and system, and the method comprises the following steps: based on an input image displayed by VR, analyzing the light intensity contribution and spatial arrangement mode of sub-pixels, namely, red, green and blue independent light-emitting units, of a Micro-LED display screen, and generating a sub-pixel spatial contribution distribution diagram; according to the method, the light intensity distribution of the sub-pixel space is analyzed, the light intensity contribution of each independent light-emitting unit to the image is extracted, the image correction is realized by combining the re-calculation of the pixel gray scale data, and the pixel-level gray scale reconstruction is realized on the basis, so that the image data correction precision is obviously improved; meanwhile, in the image distortion identification stage, the continuity of sub-block boundary gray difference is detected, and sensitivity sorting is performed on frequency energy distribution abnormal areas, so that the severity of compression distortion in the image is determined more accurately.

The invention relates to the technical field of backlight control, in particular to an LED display-oriented adaptive PWM backlight control method and a backlight driving system, which are suitable for the backlight driving system comprising a boost converter, a brightness controller and an LED channel, and the method comprises the following steps: the brightness controller outputs a control voltage, a peak current control word and a duty ratio signal, and receives a state signal. Receiving brightness data, determining a nominal peak current and a duty ratio, and initializing the nominal peak current and the duty ratio; adjusting the control voltage to change the boost output, monitoring the state, locking the working point when all states are converted from the first state to the second state, and taking the final switching channel as a reference; a peak current word is increased for the non-reference channel under the working point, and when the state returns to the first state from the second state, an optimized peak current is taken back; and adjusting the duty ratio according to the ratio of the nominal peak current to the optimized peak current to enable the average current of each channel to be consistent. According to the invention, the problem that excessive voltage drop of a linear current regulator causes extra power consumption and heating and influences the brightness consistency between channels is solved.

The invention relates to a Mini-LED display submodule and a large-size naked-eye 3D display device. The Mini-LED display submodule comprises a display panel, a first grating layer and a second grating layer which are arranged in sequence. The display panel comprises a plurality of pixel units, the first grating layer comprises a plurality of first lenses, and the first lenses are used for converting emergent light rays emitted by the corresponding pixel units into collimated light rays; the focal points of the multiple first lenses are arranged in a coplanar mode, light rays passing through the first lenses can be converted into collimated light rays with unified parameters, the multiple pixel units and the multiple first lenses are arranged in a one-to-one correspondence mode, independent regulation and control of single emergent light rays can be achieved, and the problem of cross crosstalk of different emergent light rays is greatly solved in combination with collimation processing of the first lenses; by arranging the second grating layer, directional refraction can be carried out on the collimated light rays output by different first grating layers, the collimated light rays after refraction are respectively projected to different viewpoint positions in the space, and naked eye 3D display can be realized.

A wearable display system includes one or more nanowire LED micro-displays. The nanowire micro-LED displays may be monochrome or full-color. The nanowire LEDs forming the arrays may have an advantageously narrow angular emission profile and high light output. Where a plurality of nanowire LED micro-displays is utilized, the micro-displays may be positioned at different sides of an optical combiner, for example, an X-cube prism which receives light rays from different micro-displays and outputs the light rays from the same face of the cube. The optical combiner directs the light to projection optics, which outputs the light to an eyepiece that relays the light to a user's eye. The eyepiece may output the light to the user's eye with different amounts of wavefront divergence, to place virtual content on different depth planes.

The invention relates to the technical field of LED display screens, in particular to an LED display screen brightness regulation and control method and device, and the method comprises the steps: obtaining light intensity data which comprises environment light intensity data collected by a distributed sensing assembly and brightness intensity data of display screen partitions; processing the light intensity data of the light intensity data to obtain a brightness uniformity index, and outputting a dynamic adjustment instruction in combination with ambient light intensity data; the dynamic adjustment instruction is converted into a partition driving parameter; and adjusting the brightness level of the partition of the display screen according to the partition driving parameter. Partitioned data acquisition and independent drive design are combined with a brightness uniformity evaluation algorithm and a dynamic adjustment strategy to realize accurate regulation and control of brightness in a complex scene. Meanwhile, a closed-loop feedback correction mechanism is introduced, so that the system stability and response speed are improved. The display effect can be remarkably improved, the user experience is enhanced, and the method is suitable for multi-scene application requirements.

The invention relates to the technical field of semiconductor devices, and discloses a Micro-LED display chip and a preparation method thereof. The Micro-LED display chip comprises a substrate, a plurality of LED light-emitting units, a planarization layer and a conductive reflecting wall. The LED light-emitting unit comprises a first doping type semiconductor layer, an active layer and a second doping type semiconductor layer, and at least the first doping type semiconductor layer and the active layer are processed to form an LED mesa. And a channel is formed between the adjacent LED mesas. The planarization layer is located between the LED light-emitting unit and the substrate, and the planarization layer is in bonding connection with the substrate. The planarization layer is filled in the channel and covers the LED mesa. The planarization layer has a groove corresponding to the channel. The conductive reflecting wall is arranged in the groove and surrounds the LED table top. The light-emitting efficiency and the brightness of the LED light-emitting unit on the main light-emitting angle can be improved, and then the light-emitting efficiency and the brightness of the Micro-LED display chip are improved.

The invention discloses a mine environment data LED display method based on edge calculation, and the method comprises the steps: 1, collecting multi-source environment data, and carrying out the preprocessing and index block coding; step 2, a gating fusion feature tensor is generated through an improved EdgeViT network; 3, executing risk reasoning and evaluation through a risk perception module, and outputting a risk evaluation result; 4, when a communication abnormal state is detected, risk prediction reasoning is executed based on the historical cache; 5, if the collaborative model is deployed, fusing the risk assessment results of the improved EdgeViT model and the collaborative model; sixthly, a visual control instruction is generated through an LED display control module, and risk information is dynamically displayed; and step 7, collecting feedback information, and performing incremental updating on the EdgeViT network and the risk sensing module based on the feedback information. According to the invention, the real-time performance of mine environment monitoring, the reliability of risk early warning and the intelligent response level of LED display are improved.

Methods for manufacturing LED display panel devices include providing donor wafers having LED die configured to emit different color emissions. At least some of the LED die are selectively transferred from the donor wafers to a carrier wafer such that the carrier wafer is configured with different color emitting LEDs. The different color LEDs may include red-green-blue LEDs to form a RGB display panel.