CN210925318U - P2.5LED full-color display module with 80X90 resolution ratio and swept by 1/45 - Google Patents
P2.5LED full-color display module with 80X90 resolution ratio and swept by 1/45 Download PDFInfo
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- CN210925318U CN210925318U CN201922249289.1U CN201922249289U CN210925318U CN 210925318 U CN210925318 U CN 210925318U CN 201922249289 U CN201922249289 U CN 201922249289U CN 210925318 U CN210925318 U CN 210925318U
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Abstract
The utility model relates to a 1/45 full-color display module of P2.5LED of 80X90 resolution ratio of sweeping, the resolution ratio is 80X90, if show 90 lines row by row, can surpass the vision of human eye and insist constantly, therefore divide 90 lines into upper and lower two sets of line by row scanning, upper 45 lines and lower 45 lines, divide into two the tunnel with RGB signal and control upper and lower two sets of respectively again; 1/45 the scanning mode adopts ICN2065 chip supporting 1-64 scanning arbitrary scanning to realize parallel scanning every 45 lines, and two paths of RGB signals select the 1 st line and the 46 th line respectively to scan line by line. One path of RGB signals needs 3 ICN2065 chips to be received, the P2.5 full-color LED display module has 80 rows, the ICN2065 chip has 16 PWM constant-current output ports, and only 30 ICN2065 chips are needed.
Description
The technical field is as follows:
the utility model relates to a P2.5LED full-color display module assembly of 80X90 resolution ratio that 1/45 swept.
Background art:
along with the improvement of the manufacturing technology of the LED display screen, the resolution ratio of the traditional LED display screen is greatly improved, and meanwhile, the development of the indoor small-space LED display screen is driven. The screen with the point spacing below P2.5 is generally called an indoor small-spacing LED display screen, the P2.5 point spacing belongs to indoor display screens commonly used in the industry, and the screen is configured at the middle and high ends, has stable performance and good flatness, is spliced seamlessly, can perfectly express high-definition image quality and fine color, and can be comparable to an LCD to a certain extent.
At present, the existing P2.5 display module mostly adopts two technical parameters of 64X32 resolution of 1/16 scanning and 128X64 resolution of 1/32 scanning, and when a P2.5 display screen is designed and spliced, due to the limitation of specification and size, compression loss and blurring phenomena exist in graphic imaging.
The invention content is as follows:
the utility model relates to a solve the problem that above-mentioned prior art exists and provide the P2.5LED full-color display module assembly of 80X90 resolution ratio that an 1/45 swept. The utility model discloses a design concatenation provides multidirectional selection and improves display module assembly's scanning frequency on prior art's basis, promotes the display effect, for the multiple specification selection that provides of display screen customization.
The utility model discloses the technical scheme who adopts has: an 1/45 swept P2.5LED full-color display module with 80X90 resolution comprises a lamp face, a PCB and a driving face, wherein the lamp face and the driving face are respectively arranged on the upper end face and the lower end face of the PCB,
the lamp surface is formed by arranging full-color RGB lamp beads on the upper end face of a PCB in a matrix mode, the number of the transverse full-color RGB lamp beads of the lamp surface is 80, the number of the longitudinal full-color RGB lamp beads is 90, and a display module with the resolution ratio of 80X90 is formed, the display module is divided into two groups of modules with 45 lines and scans line by line in parallel, the two groups of modules with 45 lines and 45 lines respectively receive one path of RGB signals, and the 1 st line and the 46 th line in the two groups of modules are respectively selected by the two paths of RGB signals simultaneously and scanned line by line in parallel;
the driving surface comprises a transmission interface, a signal amplification module, a row driving module and a column driving module, the transmission interface receives an external control signal and transmits the external control signal to the signal amplification module, and the signal amplification module transmits a row control signal and a column control signal in the external control signal to the row driving module and the column driving module respectively;
the column driving module comprises 30 ICN2065 chips, each 15 ICN2065 chips form one group, and cathode pull-down currents are respectively provided for RGB lamp beads in the two groups of modules of the upper 45 rows and the lower 45 rows correspondingly;
the line driving module comprises 12 HX6058 chips, and each 6 HX6058 chips are in one group and respectively and correspondingly provide anode power supply voltage for RGB lamp beads in two groups of modules of an upper 45 line and a lower 45 line;
the signal amplification module adopts a 74HC245 chip, and the 74HC245 chip amplifies an external control signal received by the transmission interface and correspondingly transmits the amplified external control signal to the column driving module and the row driving module;
the transmission interface comprises two HUB75 interfaces, and the HUB75 interface receives external control signals and transmits the signals to the 74HC245 chip.
Further, each ICN2065 chip in the column driving module includes a SIN port, an SDO port, a REXT port, a VDD port, and 16 PWM constant current output ports.
Furthermore, 15 ICN2065 chips in the two groups of modules of the upper 45 rows and the lower 45 rows are respectively taken as one level according to 3 chips in each row and are correspondingly divided into 5 levels, and the one-level ICN2065 chips in the two groups of modules of the upper 45 rows and the lower 45 rows correspondingly control 16 rows of full-color RGB lamp beads.
Furthermore, the SIN ports of the first-level ICN2065 chips in the two groups of modules in the upper 45 rows and the lower 45 rows respectively receive RGB serial data signals sent from the 74HC245 chip; the SDO port in the first-level ICN2065 chip is connected with the SIN port of the next-level ICN2065 chip to realize data transmission;
16 PWM constant current output ports of each ICN2065 chip provide cathode pull-down current for 16 columns of lamp beads; the REXT port of each ICN2065 chip is externally connected with a current-limiting resistor to control the luminous brightness of the LED; and a VDD port of each ICN2065 chip is externally connected with a decoupling capacitor to play a role in filtering.
Further, the capacitance value of the decoupling capacitor is 0.1 uf.
Furthermore, each HX6058 chip in the row driving module has 8 current output ports, and one current output port provides anode supply voltage for 80 full-color RGB beads in a horizontal row in the lamp surface.
The utility model discloses following beneficial effect has:
the utility model discloses a support 1~64 to sweep the ICN2065 chip of sweeping wantonly and realize 1/45 scanning mode, support 1~32 to sweep the ICN2053 chip of sweeping wantonly than traditional use and use drive IC's quantity to be a lot less, the heat-sinking capability promotes by a wide margin, improves the refresh rate.
Description of the drawings:
fig. 1 is a schematic structural view of a driving surface of a P2.5 module.
FIG. 2 is a schematic diagram of the electrical connections of ICN2065 (pin connections are omitted and numbers are used instead of pin connections, i.e., R1N1 in the 74HC245 chip is adjacent to R1N1 in the ICN2065 chip, and the rest numbers are the same).
FIG. 3 is a schematic diagram of the driving IC circuit connection.
FIG. 4 is a timing diagram of data transmission of the LED display screen.
FIG. 5 is a schematic diagram of a hierarchy of ICN2065 chips in two sets of modules.
Fig. 6 is a schematic diagram of the transmission principle of two RGB signals.
The specific implementation mode is as follows:
the present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1 to 6, the utility model relates to a full-color display module assembly of P2.5LED of 80X90 resolution ratio that 1/45 swept, including lamp face, PCB board and drive face, lamp face and drive face set up respectively on terminal surface about the PCB board.
The utility model provides a lamp face is arranged in the up end of PCB board according to the matrix form by full-color RGB lamp pearl, and the horizontal full-color RGB lamp pearl of lamp face is 80, and vertical full-color RGB lamp pearl is 90 to constitute the display module assembly that resolution ratio is 80X90, the display module assembly divide 45 lines and two sets of modules of 45 lines down and scan line by line, and go up 45 lines and receive RGB signal all the way respectively with two sets of modules of 45 lines down, two sets of are selected simultaneously respectively to two way RGB signal 1 line and 46 line in the module are parallel to scan line by line.
The driving surface comprises a transmission interface, a signal amplification module, a row driving module and a column driving module, the transmission interface receives an external control signal and transmits the external control signal to the signal amplification module, and the signal amplification module transmits the row control signal and the column control signal in the external control signal to the row driving module and the column driving module respectively.
The column driving module comprises 30 ICN2065 chips, and the ICN2065 chips support 1-64 scanning. Every 15 ICN2065 chips are in one group, and the cathode pull-down current is respectively provided for RGB lamp beads in the two groups of modules of the upper 45 rows and the lower 45 rows.
The line driving module comprises 12 HX6058 chips, each 6 HX6058 chips are in one group and respectively provide anode power supply voltage for RGB lamp beads in the two groups of modules of the upper 45 lines and the lower 45 lines correspondingly.
The signal amplification module adopts a 74HC245 chip, and the 74HC245 chip correspondingly transmits the external control signal received by the transmission interface to the column driving module and the row driving module after amplification processing.
Each ICN2065 chip in the column driver module includes a SIN port, an SDO port, a REXT port, a VDD port, and 16 PWM constant current output ports.
15 ICN2065 chips in two sets of modules of 45 upper lines and 45 lower lines are all according to 3 in each row for one-level and correspond and divide into 5 levels, and 16 full-color RGB lamp pearls of row are correspondingly controlled to one-level ICN2065 chip in two sets of modules of 45 upper lines and 45 lower lines.
The SIN ports in the first-level ICN2065 chips in the two groups of modules of the upper 45 rows and the lower 45 rows respectively receive RGB serial data signals sent by a 74HC245 chip; the SDO port in the first-level ICN2065 chip is connected with the SIN port of the next-level ICN2065 chip to realize data transmission; 16 PWM constant current output ports of each ICN2065 chip provide cathode pull-down current for 16 columns of lamp beads; the REXT port of each ICN2065 chip is externally connected with a current limiting resistor to control the luminous brightness of the LED, and the resistance value of the current limiting resistor is determined according to the debugging result. And a VDD port of each ICN2065 chip is externally connected with a decoupling capacitor to play a role in filtering, and the capacitance value of the decoupling capacitor is 0.1 uf.
Each HX6058 chip in the row driving module has 8 current output ports, and one current output port provides anode power supply voltage for 80 full-color RGB lamp beads in a transverse row in the lamp surface.
The column driving module of the present invention can also adopt HX6158 chip or HX5958 chip.
The signal amplification module adopts a 74HC245 chip, and the 74HC245 chip amplifies an external control signal received by the transmission interface and correspondingly transmits the amplified external control signal to the column driving module and the row driving module;
the 74HC245 chip is a signal amplification module chip, and transmits the control signal received from the transmission interface end to the column driving module and the row driving module after amplification processing.
The 74HC245 chip comprises a DIR port, A0-A7 ports and B0-B7 ports, wherein the DIR port is grounded, and data output by the transmission interface flows out from the B port receiving A port.
The transmission interface comprises two HUB75 interfaces, an input interface is arranged near the 74HC245 chip end, and the input interface receives control signals sent by an external control card and transmits the control signals to the B port of the 74HC245 chip. The HUB75 output interface is connected with the HUB75 input interface of the next cell board through a flat cable.
The resolution of the P2.5 full-color LED display module of the present invention is 80X90, and if 90 lines are displayed line by line, the time of visual persistence of human eyes can be exceeded, so that 90 lines are divided into an upper line and a lower line, and the upper line and the lower line are scanned line by line, and the RGB signals are divided into two paths to control the upper line and the lower line respectively; 1/45 the scanning mode adopts ICN2065 chip supporting 1-64 scanning arbitrary scanning to realize parallel scanning every 45 lines, two paths of RGB signals respectively select the 1 st line and the 46 th line to scan line by line, the period is short and the refresh rate is high.
One path of RGB signals needs 3 ICN2065 chips to be received, the P2.5 full-color LED display module has 80 rows, the ICN2065 chip has 16 PWM constant-current output ports, and only 30 ICN2065 chips are needed.
The utility model discloses a support 1~64 to sweep the ICN2065 chip of sweeping wantonly and realize 1/45 scanning mode, support 1~32 to sweep the ICN2053 chip of sweeping wantonly than traditional use and use drive IC's quantity to be a lot less, the heat-sinking capability promotes by a wide margin, improves the refresh rate.
If the conventional ICN2053 chip is used for driving, the maximum scan mode can only support 1/32, 90 rows need to be divided into 3 groups, only the 1/30 scan mode can be realized, and the driving ICs need to use (96/16) × 3= 54.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications can be made without departing from the principle of the present invention, and these modifications should also be regarded as the protection scope of the present invention.
Claims (6)
1. The utility model provides an 1/45 full-color display module assembly of P2.5LED of 80X90 resolution ratio of sweeping, includes lamp face, PCB board and driving surface, lamp face and driving surface set up respectively on the terminal surface about the PCB board, its characterized in that:
the lamp surface is formed by arranging full-color RGB lamp beads on the upper end face of a PCB in a matrix mode, the number of the transverse full-color RGB lamp beads of the lamp surface is 80, the number of the longitudinal full-color RGB lamp beads is 90, and a display module with the resolution ratio of 80X90 is formed, the display module is divided into two groups of modules with 45 lines and scans line by line in parallel, the two groups of modules with 45 lines and 45 lines respectively receive one path of RGB signals, and the 1 st line and the 46 th line in the two groups of modules are respectively selected by the two paths of RGB signals simultaneously and scanned line by line in parallel;
the driving surface comprises a transmission interface, a signal amplification module, a row driving module and a column driving module, the transmission interface receives an external control signal and transmits the external control signal to the signal amplification module, and the signal amplification module transmits a row control signal and a column control signal in the external control signal to the row driving module and the column driving module respectively;
the column driving module comprises 30 ICN2065 chips, each 15 ICN2065 chips form one group, and cathode pull-down currents are respectively provided for RGB lamp beads in the two groups of modules of the upper 45 rows and the lower 45 rows correspondingly;
the line driving module comprises 12 HX6058 chips, and each 6 HX6058 chips are in one group and respectively and correspondingly provide anode power supply voltage for RGB lamp beads in two groups of modules of an upper 45 line and a lower 45 line;
the signal amplification module adopts a 74HC245 chip, and the 74HC245 chip amplifies an external control signal received by the transmission interface and correspondingly transmits the amplified external control signal to the column driving module and the row driving module;
the transmission interface comprises two HUB75 interfaces, and the HUB75 interface receives external control signals and transmits the signals to the 74HC245 chip.
2. The 1/45 swept P2.5LED full color display module of 80X90 resolution as set forth in claim 1, wherein: each ICN2065 chip in the column driver module includes a SIN port, an SDO port, a REXT port, a VDD port, and 16 PWM constant current output ports.
3. The 1/45 swept P2.5LED full color display module of 80X90 resolution as set forth in claim 2, wherein: 15 ICN2065 chips in two sets of modules of 45 upper lines and 45 lower lines all are according to every 3 and are one-level and divide into 5 levels correspondingly, and 16 full-color RGB lamp pearls of row are controlled correspondingly to one-level ICN2065 chip in two sets of modules of 45 upper lines and 45 lower lines.
4. The 1/45 swept P2.5LED full color display module of 80X90 resolution as set forth in claim 2, wherein: the SIN ports in the first-level ICN2065 chips in the two groups of modules of the upper 45 rows and the lower 45 rows respectively receive RGB serial data signals sent by 74HC245 chips; the SDO port in the first-level ICN2065 chip is connected with the SIN port of the next-level ICN2065 chip to realize data transmission;
16 PWM constant current output ports of each ICN2065 chip provide cathode pull-down current for 16 columns of lamp beads; the REXT port of each ICN2065 chip is externally connected with a current-limiting resistor to control the luminous brightness of the LED; and a VDD port of each ICN2065 chip is externally connected with a decoupling capacitor to play a role in filtering.
5. The 1/45 swept P2.5LED full color display module of 80X90 resolution as set forth in claim 4, wherein: the capacitance value of the decoupling capacitor is 0.1 uf.
6. The 1/45 swept P2.5LED full color display module of 80X90 resolution as set forth in claim 1, wherein: every HX6058 chip in the line drive module has 8 current output ports, and a current output port provides positive pole supply voltage for a horizontal 80 full-color RGB lamp pearls in the lamp face.
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| CN201922249289.1U CN210925318U (en) | 2019-12-13 | 2019-12-13 | P2.5LED full-color display module with 80X90 resolution ratio and swept by 1/45 |
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| CN201922249289.1U CN210925318U (en) | 2019-12-13 | 2019-12-13 | P2.5LED full-color display module with 80X90 resolution ratio and swept by 1/45 |
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| CN110853534A (en) * | 2019-12-13 | 2020-02-28 | 南京明钼视讯科技有限公司 | P2.5 LED full-color display module with 80X90 special resolution and swept by 1/45 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110853534A (en) * | 2019-12-13 | 2020-02-28 | 南京明钼视讯科技有限公司 | P2.5 LED full-color display module with 80X90 special resolution and swept by 1/45 |
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