CN112102738B - Interactive COB display module and LED display screen - Google Patents
Interactive COB display module and LED display screen Download PDFInfo
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- CN112102738B CN112102738B CN202010969141.XA CN202010969141A CN112102738B CN 112102738 B CN112102738 B CN 112102738B CN 202010969141 A CN202010969141 A CN 202010969141A CN 112102738 B CN112102738 B CN 112102738B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
Abstract
The application relates to an interactive COB display module and an LED display screen, wherein in the COB display module, LED lamp beads are arranged on one end face of a circuit board in an array mode, and each LED lamp bead is provided with a photoelectric sensing chip; a display driving chip, a touch scanning driving module and an induction signal collecting module are arranged on the other end face; the packaging layer covers the LED lamp beads; a plurality of photoelectric sensing chips are connected together to form a touch sensing pixel point; the first end of each row of touch sensing pixel points is connected with a sensing signal collection module; the second end of each row of touch sensing pixel points is connected with the touch scanning driving module; the touch scanning driving module provides a touch scanning signal; the photoelectric sensing chip senses external light, generates a sensing electric signal and outputs the sensing electric signal to the sensing signal collecting module. Thus, interactive operation can be realized; a plurality of photoelectric sensing chips interconnect can strengthen the signal, improves the sensitivity of mutual response.
Description
Technical Field
The application relates to the technical field of LED display screens, in particular to a COB display module capable of interacting and an LED display screen.
Background
With the continuous development of LED display technology, LED display screens are applied in more and more scenes. People have higher and higher requirements on color, resolution and fine granularity of a display picture, and LED display screens are increasingly developed towards the direction of high resolution such as small dot spacing, more natural color reduction effect and the like.
To achieve even smaller dot spacing, the LED display industry, in the first days, achieved primarily by reducing the size of surface mount LEDs, achieving a dot spacing of 3mm step by step. In order to realize being less than 1 mm's point interval, produced COB (chip on board ) technique in the trade, directly encapsulated the LED chip on the PCB board to form a COB module, then utilized the concatenation of COB module to form the LED display screen.
Meanwhile, as the use of the LED display screen in indoor scenes is gradually increased, the demand of people for interactive operation of the LED display screen is also becoming higher and higher. Among them, the most prominent is touch operation. At present, a touch technology on an LED display screen is mainly based on an infrared or ultrasonic technology, and infrared devices or ultrasonic devices need to be installed on a peripheral frame of the LED display screen. Therefore, the existing LED display screen with the touch function has a larger frame structure; and the single infrared equipment or ultrasonic equipment is adopted, so that the installation is complex and the cost is high.
Disclosure of Invention
Based on this, it is necessary to have the great, the complicated problem of installation of equipment size to the touch-control scheme of current LED display screen, provides a COB display module assembly and LED display screen that can interact.
The embodiment of the application discloses an interactive COB display module, which comprises a circuit board, a plurality of LED lamp beads, a packaging layer, at least one display driving chip, at least one touch scanning driving module and an induction signal collecting module, wherein the LED lamp beads are arranged on the circuit board;
each LED lamp bead is provided with a photoelectric sensing chip; the LED lamp beads are arranged on one end face of the circuit board in an array mode, and the display driving chip, the touch scanning driving module and the induction signal collecting module are arranged on the other end face of the circuit board; the display driving chip is electrically connected with the LED lamp beads through a circuit in the circuit board and controls the working state of the LED lamp beads;
the packaging layer covers the LED lamp beads and the photoelectric sensing chip to protect the LED lamp beads and the photoelectric sensing chip;
the photoelectric sensing chips are connected together to form touch sensing pixel points, and each touch sensing pixel point is provided with a first end and a second end; all touch sensing pixel points are arranged on the circuit board in an array mode; the first end of each row of touch sensing pixel points is connected with the sensing signal collection module through a circuit in the circuit board; the second end of each row of touch sensing pixel points is connected with the touch scanning driving module through a circuit in the circuit board;
the touch scanning driving module provides a touch scanning signal; the photoelectric sensing chip senses external light and generates a sensing electric signal, the sensing electric signal is output to the sensing signal collecting module through the first end of the touch sensing pixel point, and the sensing signal collecting module receives the sensing electric signal output by the touch sensing pixel point.
In some embodiments, the induced electrical signal is a current, and the plurality of photoelectric sensing chips are connected in parallel to form a touch sensing pixel.
In some embodiments, the sensing electrical signal is a voltage or a charge, and the plurality of photoelectric sensing chips are connected in series to form a touch sensing pixel point.
In some embodiments, the LED lamp beads are single-color LED lamp beads, and the COB display module comprises LED lamp beads of three colors, namely red LED lamp beads, green LED lamp beads and blue LED lamp beads;
or the LED lamp beads are composite LED lamp beads, and each LED lamp bead comprises a red LED chip, a green LED chip and a blue LED chip.
In some embodiments, the device further comprises a signal amplifier for amplifying the induced electrical signal received by the induced signal collection module.
In some embodiments, the system further comprises a signal processor for analyzing the amplified induced electrical signal to determine the position of the interaction.
In some embodiments, the signal processor generates a synchronization signal and outputs the synchronization signal to the touch scanning driving module and the sensing signal collecting module, and the touch scanning driving module synchronously outputs a touch scanning signal according to the synchronization signal; the induction signal collection module synchronously receives induction electric signals according to the synchronous signals; and the signal processor determines the position of the interactive operation according to the received induction electric signal and the synchronization signal.
The application further provides an LED display screen, which comprises a plurality of COB display modules, wherein the plurality of COB display modules are spliced to form the LED display screen; the COB display module assembly is the interactive COB display module assembly of an aforesaid embodiment.
In some embodiments, the display device further comprises a touch control chip for receiving the induced electrical signals output by all the COB display modules and analyzing and determining the position of the interactive operation.
In some embodiments, still include the braced frame, the COB display module assembly is installed on the braced frame, the braced frame provides structural support for the COB display module assembly.
According to the interactive COB display module provided by the embodiment of the application, the photoelectric sensing chips are integrated in the LED lamp beads, and the photoelectric sensing chips are connected together to form touch sensing pixel points, so that a touch sensing pixel point array is obtained; the photoelectric sensing chip is used for sensing external input light to generate a sensing electric signal, the touch scanning driving module and the sensing signal collecting module are used for scanning the sensing electric signal, and then the position of an interaction action position causing light change can be analyzed, so that interactive operation is realized. Meanwhile, the touch sensing pixel points are formed by connecting a plurality of photoelectric sensing chips, so that the sensing signals generated by the photoelectric sensing chips can be subjected to signal enhancement, the sensitivity of interactive sensing signals can be obviously improved, and the experience of interactive operation is improved.
Drawings
Fig. 1 is a schematic structural diagram of a COB display module according to an embodiment of the present application;
fig. 2 is a schematic structural view of a COB display module according to another embodiment of the present application;
fig. 3 is a schematic structural diagram of a COB display module according to an embodiment of the present disclosure at a front view angle;
fig. 4 is a schematic circuit diagram of a COB display module according to an embodiment of the present disclosure;
fig. 5 is a schematic circuit diagram of a COB display module according to another embodiment of the present disclosure;
fig. 6 is a schematic structural view illustrating a COB display module according to an embodiment of the present disclosure in use;
fig. 7 is a schematic structural diagram of an LED display screen according to an embodiment of the present application.
Detailed Description
To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present application are given in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1, 3 and 4, an embodiment of the present application discloses an interactive COB display module 10, which includes a circuit board 100, a plurality of LED lamp beads 200, a packaging layer 300, at least one display driving chip 700, at least one touch scan driving module 520, and an inductive signal collecting module 540;
each LED lamp bead 200 is provided with a photoelectric sensing chip 801; the LED lamp beads 200 are arranged on one end face of the circuit board 100 in an array mode, and the display driving chip 700, the touch scanning driving module 520 and the induction signal collecting module 540 are arranged on the other end face of the circuit board; the display driving chip 700 is electrically connected with the LED lamp beads 200 through a circuit in the circuit board 100 and controls the working states of the LED lamp beads 200;
the packaging layer 300 is arranged to cover the LED lamp bead 200 and the photoelectric sensing chip 801 so as to protect the LED lamp bead 200 and the photoelectric sensing chip 801;
a plurality of photoelectric sensing chips 801 are connected together to form touch sensing pixel points 810, and each touch sensing pixel point 810 is provided with a first end and a second end; all touch sensing pixels 810 are arranged on the circuit board 100 in an array; the first end of each row of touch sensing pixel points 810 is connected to the sensing signal collection module 540 through a line in the circuit board 100; the second end of each row of touch sensing pixel 810 is connected to the touch scan driving module 520 through a line in the circuit board 100;
the touch scan driving module 520 provides a touch scan signal; the photoelectric sensing chip 801 senses external light to generate a sensing electrical signal, the sensing electrical signal is output to the sensing signal collecting module 540 through the first end of the touch sensing pixel 810, and the sensing signal collecting module 540 receives the sensing electrical signal output by the touch sensing pixel 810.
The touch scan driving module 520 may have a plurality of scan channels, and each scan channel is correspondingly connected to the second end of one row of touch sensing pixels 810. The touch scan driving module 520 outputs a touch scan signal through each scan channel, and at the same time, only one scan channel is turned on — that is, only the second end of one row of touch sensing pixels 810 is turned on by a driving voltage. The photoelectric sensing chip 801 senses and generates a sensing electric signal according to the received external light. The plurality of photoelectric sensing chips 801 form a touch sensing pixel 810, and each touch sensing pixel 810 collects sensing electric signals generated inside the touch sensing pixel 810 and outputs the sensing electric signals to the sensing signal collection module 540 from a first end.
The sensing signal collecting module 540 may be provided with a plurality of signal receiving channels, which respectively correspond to the first ends of the touch sensing pixels 810 in each row. The position of the sensing electrical signal in the touch sensing pixel 810 array can be determined by combining the received signal receiving channel position of the sensing electrical signal and the touch scanning signal. By analyzing the induced electric signals, the position where the external input light changes, namely the position where the interaction action is located, can be identified, and then the interaction operation can be executed by combining the display content at the position in the display picture.
According to the interactive COB display module provided by the embodiment of the application, the photoelectric sensing chips are integrated in the LED lamp beads, and the photoelectric sensing chips are connected together to form touch sensing pixel points, so that a touch sensing pixel point array is obtained; the photoelectric sensing chip is used for sensing external input light to generate a sensing electric signal, the touch scanning driving module and the sensing signal collecting module are used for scanning the sensing electric signal, and then the position of an interaction action position causing light change can be analyzed, so that interactive operation is realized. Meanwhile, the touch sensing pixel points are formed by connecting a plurality of photoelectric sensing chips, so that the sensing signals generated by the photoelectric sensing chips can be subjected to signal enhancement, the sensitivity of interactive sensing signals can be obviously improved, and the experience of interactive operation is improved.
As shown in fig. 1, the LED lamp bead 200 may be a single-color LED lamp bead, such as one of a red LED lamp bead, a green LED lamp bead, and a blue LED lamp bead. At this moment, among the COB display module assembly, can contain the LED lamp pearl of three kinds of colours of red LED lamp pearl, green LED lamp pearl, blue LED lamp pearl simultaneously to provide full-color display.
The LED lamp bead 200 may also be a composite LED lamp bead. As shown in fig. 2, the LED lamp bead 200 may simultaneously include a red LED chip R, a green LED chip G, and a blue LED chip B. It is understood that the LED lamp bead 200 may also include LED chips of other colors, such as a yellow LED chip, a cyan LED chip, a white LED chip, and the like.
The photoelectric sensing chip 801 is used for sensing incident light and generating a sensing electric signal. The photoelectric sensing chip 801 may use an existing photoelectric conversion device. Different types of the photo-sensing chips 801 can generate different types of sensing electrical signals. The photo sensor chip 801 may be one of a MOS capacitor, an avalanche photodiode, a photo resistor, a triode, or other photoelectric conversion devices. The induced electrical signal may be one of electrical signals such as charge, current, voltage, etc. When the photo-sensing chip 801 employs a MOS capacitor, the sensing electric signal may be an electric charge. When the photo-electric sensing chip 801 employs an avalanche photodiode, a photo-resistor, or a triode photo-transistor, the induced electrical signal may be a current. For the photoresistor, the resistance value of the photoresistor is influenced by input light, and the change of the resistance value can be converted into an electric signal in a current form by applying preset voltage to two ends of the photoresistor.
In the COB display module assembly, the distance between LED lamp pearl 200 is littleer and littleer. When the user performs an interactive operation, for example, touch the COB display module with a finger, as shown in fig. 6, the finger covers the plurality of LED light beads 200. Therefore, each touch sensing pixel 810 is formed by connecting a plurality of photoelectric sensing chips 801 together, so that the intensity of the output sensing electric signal can be enhanced. Meanwhile, each touch sensing pixel point 810 can correspond to a certain area, and a plurality of photoelectric sensing chips 801 are uniformly distributed in the area, so that the sensitivity of touch sensing can be effectively improved. In addition, by summarizing the induced electrical signals generated by the plurality of photoelectric sensing chips 801 as the output induced electrical signals, a single photoelectric sensing chip 801 does not need to generate an induced electrical signal with a large value, and a photoelectric sensing chip with low power consumption can be used, so that the power consumption in the aspect of interactive operation is reduced.
According to the type of the sensing electric signal, the connection mode of the photoelectric sensing chip 801 inside the touch sensing pixel 810 can be one of parallel connection and series connection. For example, when the sensing electrical signal is a current, for example, when the photo sensor chip 801 employs an avalanche photodiode, a photo resistor or a triode, the photo sensor chip 801 may be connected in parallel to form a touch sensing pixel 810, as shown in fig. 4. For example, when the sensing electrical signal is a charge or a voltage, for example, the photo sensor chip 801 adopts a MOS capacitor, the photo sensor chip 801 may be connected in series to form a touch sensing pixel 810, as shown in fig. 5.
In some embodiments, as shown in fig. 4, the COB display module 10 may further include a signal amplifier 560, configured to amplify the induced electrical signals received by the induced signal collecting module 540, so that a subsequent circuit may directly process the amplified induced electrical signals.
In some embodiments, the COB display module 10 may further include a signal processor 900, configured to analyze the amplified induced electrical signal and determine the position of the interactive operation. Generally, under normal incident light, an induced electrical signal of the photoelectric sensing chip 801 is at a first state value; when there is an interactive operation, when the incident light at the position of the interactive operation changes, the induced electrical signal of the photoelectric sensing chip 801 is in the second state value. By comparing the change of the induced electrical signal, the signal processor 900 can determine whether to perform the interactive operation; in combination with the touch scanning signal and the signal receiving channel position where the sensing signal collecting module 540 receives the sensing electrical signal, the signal processor 900 can determine the position of the interactive operation.
The user's interactive operation can be performed by an object which can block light, such as a finger or a touch pen, or by an object which can emit strong light, such as a laser pen. In the former case, the second state value of the induced electrical signal has a smaller variation trend than the first state value of the induced electrical signal. In the latter case, the second state value of the induced electrical signal has an increasing trend.
It is understood that the signal processor 900 may not be disposed inside the COB display module 10, but may be an external module independent from the COB display module 10. For example, when a plurality of COB display modules 10 are spliced to form an LED display screen, a signal processor 900 may be disposed on the LED display screen for analyzing the amplified induced electrical signal and determining the position of the interactive operation.
In some embodiments, the signal processor 900 may generate a synchronization signal and output the synchronization signal to the touch scan driving module 520 and the sensing signal collecting module 540, and the touch scan driving module 520 synchronously outputs the touch scan signal according to the synchronization signal; the sensing signal collecting module 540 synchronously receives the sensing electrical signal according to the synchronization signal; the signal processor 900 determines the location of the interactive operation based on the received induced electrical signals and the synchronization signals.
According to the interactive COB display module provided by the embodiment of the application, the photoelectric sensing chips are integrated in the LED lamp beads, and the photoelectric sensing chips are connected together to form touch sensing pixel points, so that a touch sensing pixel point array is obtained; the photoelectric sensing chip is used for sensing external input light to generate a sensing electric signal, the touch scanning driving module and the sensing signal collecting module are used for scanning the sensing electric signal, and then the position of an interaction action position causing light change can be analyzed, so that interactive operation is realized. Meanwhile, the touch sensing pixel points are formed by connecting a plurality of photoelectric sensing chips, so that the sensing signals generated by the photoelectric sensing chips can be subjected to signal enhancement, the sensitivity of interactive sensing signals can be obviously improved, and the experience of interactive operation is improved.
Another embodiment of the application further discloses an LED display screen, as shown in fig. 7, including a plurality of COB display modules 10, where the plurality of COB display modules 10 are spliced to form the LED display screen; COB display module assembly 10 be the COB display module assembly that has touch function of aforesaid any one embodiment.
Because the COB display module assembly in the preceding embodiment has been adopted, consequently, the LED display screen that the concatenation formed also has touch function to need not to design the frame of wideness, under the overall dimension ratio, also need not to design extra mounting structure, simple structure, easy to use.
In some embodiments, the LED display screen may further include a touch control chip, configured to receive the induced electrical signals output by all COB display modules, and analyze and determine the position of the interaction operation. At this time, the signal processor 900 may not be provided on the COB display module 10. The operation of the touch control chip can be seen from the above description of the signal processor 900.
Further, the touch control chip may also generate a synchronization signal, and output the synchronization signal to the touch scan driving module 520 and the sensing signal collecting module 540 on all the COB display modules 10, where the touch scan driving module 520 outputs the touch scan signal synchronously according to the synchronization signal; the sensing signal collecting module 540 synchronously receives the sensing electrical signal according to the synchronization signal; the signal processor 900 determines the location of the interactive operation based on the received induced electrical signals and the synchronization signals.
In some embodiments, as shown in fig. 7, the LED display screen further includes a supporting frame 20, the COB display module 10 is installed on the supporting frame 20, and the supporting frame 20 provides structural support for the COB display module 10, so as to enhance the structural strength of the LED display screen, ensure the splicing effect of the COB display module 10, and ensure the display quality.
The LED display screen may further include a power supply unit for receiving an input external power and converting the input external power into an operating voltage required by the COB display module 10. For example, the external power source may be an alternating current, such as 220V alternating current, 110V alternating current, 100V alternating current, 48V alternating current, or the like; or may be a direct current, such as 12V direct current, 5V direct current, or the like.
The LED display screen also comprises a plurality of receiving cards, and each receiving card corresponds to at least one COB display module; and the receiving card is used for receiving video data input from the outside, intercepting picture data of a corresponding area of the connected COB display module, and outputting the picture data to the corresponding COB display module for display.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. An interactive COB display module is characterized by comprising a circuit board, a plurality of LED lamp beads, a packaging layer, at least one display driving chip, at least one touch scanning driving module and an induction signal collecting module;
each LED lamp bead is provided with a photoelectric sensing chip; the LED lamp beads are arranged on one end face of the circuit board in an array mode, and the display driving chip, the touch scanning driving module and the induction signal collecting module are arranged on the other end face of the circuit board; the display driving chip is electrically connected with the LED lamp beads through a circuit in the circuit board and controls the working state of the LED lamp beads;
the packaging layer covers the LED lamp beads and the photoelectric sensing chip to protect the LED lamp beads and the photoelectric sensing chip;
the photoelectric sensing chips are connected together to form touch sensing pixel points, and each touch sensing pixel point is provided with a first end and a second end; all touch sensing pixel points are arranged on the circuit board in an array mode; the first end of each row of touch sensing pixel points is connected with the sensing signal collection module through a circuit in the circuit board; the second end of each row of touch sensing pixel points is connected with the touch scanning driving module through a circuit in the circuit board;
the touch scanning driving module provides a touch scanning signal; the photoelectric sensing chip senses external light and generates a sensing electric signal, the sensing electric signal is output to the sensing signal collecting module through the first end of the touch sensing pixel point, and the sensing signal collecting module receives the sensing electric signal output by the touch sensing pixel point.
2. The interactive COB display module of claim 1, wherein the induced electrical signal is a current, and a plurality of the photoelectric sensing chips are connected in parallel to form a touch sensing pixel.
3. The interactive COB display module of claim 1, wherein the induced electrical signal is a voltage or a charge, and a plurality of the photoelectric sensing chips are connected in series to form a touch sensing pixel.
4. The interactive COB display module of claim 1, wherein the LED lamp beads are single-color LED lamp beads, and the COB display module comprises LED lamp beads of three colors, namely red LED lamp beads, green LED lamp beads and blue LED lamp beads;
or the LED lamp beads are composite LED lamp beads, and each LED lamp bead comprises a red LED chip, a green LED chip and a blue LED chip.
5. The interactive COB display module of any one of claims 1-4, further comprising a signal amplifier for amplifying the induced electrical signals received by the induced signal collection module.
6. The interactive COB display module of claim 5, further including a signal processor for analyzing the amplified induced electrical signals to determine the location of the interactive operation.
7. The interactive COB display module of claim 6, wherein the signal processor generates a synchronization signal and outputs the synchronization signal to the touch scan driving module and the sensing signal collection module, and the touch scan driving module synchronously outputs a touch scan signal according to the synchronization signal; the induction signal collection module synchronously receives induction electric signals according to the synchronous signals; and the signal processor determines the position of the interactive operation according to the received induction electric signal and the synchronization signal.
8. An LED display screen comprises a plurality of COB display modules, wherein the plurality of COB display modules are spliced to form the LED display screen; characterized in that, COB display module assembly is the COB display module assembly that can interact of any one of claims 1-5.
9. The LED display screen of claim 8, further comprising a touch control chip for receiving the induced electrical signals output by all COB display modules and analyzing and determining the position of the interactive operation.
10. The LED display screen of claim 8, further comprising a support frame on which the COB display module is mounted, the support frame providing structural support to the COB display module.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010969141.XA CN112102738B (en) | 2020-09-15 | 2020-09-15 | Interactive COB display module and LED display screen |
| PCT/CN2020/130497 WO2022057080A1 (en) | 2020-09-15 | 2020-11-20 | Interactive cob display module and led display screen |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010969141.XA CN112102738B (en) | 2020-09-15 | 2020-09-15 | Interactive COB display module and LED display screen |
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| CN112102738B true CN112102738B (en) | 2021-08-17 |
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| CN113327523A (en) * | 2021-06-01 | 2021-08-31 | 深圳市兆驰晶显技术有限公司 | Touch induction LED display panel preparation method, LED display screen and control system |
| CN114884578A (en) * | 2022-04-14 | 2022-08-09 | 深圳市稳耀半导体科技有限公司 | Multifunctional infrared receiving module with LED indicating lamp or sensor |
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| CN112102738A (en) | 2020-12-18 |
| WO2022057080A1 (en) | 2022-03-24 |
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