CN201017607Y - Multiply LED display driver apparatus - Google Patents
Multiply LED display driver apparatus Download PDFInfo
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- CN201017607Y CN201017607Y CNU2006201636072U CN200620163607U CN201017607Y CN 201017607 Y CN201017607 Y CN 201017607Y CN U2006201636072 U CNU2006201636072 U CN U2006201636072U CN 200620163607 U CN200620163607 U CN 200620163607U CN 201017607 Y CN201017607 Y CN 201017607Y
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- 239000000463 material Substances 0.000 abstract description 3
- 230000003247 decreasing effect Effects 0.000 abstract 1
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- 238000010586 diagram Methods 0.000 description 10
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- PCTMTFRHKVHKIS-BMFZQQSSSA-N (1s,3r,4e,6e,8e,10e,12e,14e,16e,18s,19r,20r,21s,25r,27r,30r,31r,33s,35r,37s,38r)-3-[(2r,3s,4s,5s,6r)-4-amino-3,5-dihydroxy-6-methyloxan-2-yl]oxy-19,25,27,30,31,33,35,37-octahydroxy-18,20,21-trimethyl-23-oxo-22,39-dioxabicyclo[33.3.1]nonatriaconta-4,6,8,10 Chemical compound C1C=C2C[C@@H](OS(O)(=O)=O)CC[C@]2(C)[C@@H]2[C@@H]1[C@@H]1CC[C@H]([C@H](C)CCCC(C)C)[C@@]1(C)CC2.O[C@H]1[C@@H](N)[C@H](O)[C@@H](C)O[C@H]1O[C@H]1/C=C/C=C/C=C/C=C/C=C/C=C/C=C/[C@H](C)[C@@H](O)[C@@H](C)[C@H](C)OC(=O)C[C@H](O)C[C@H](O)CC[C@@H](O)[C@H](O)C[C@H](O)C[C@](O)(C[C@H](O)[C@H]2C(O)=O)O[C@H]2C1 PCTMTFRHKVHKIS-BMFZQQSSSA-N 0.000 description 1
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Abstract
The utility model discloses a multiplication LED displaying driving device, which comprises an LED display array consisting of an LED part used as a luminescent element and a driving device circuit. The LED display array is a group of LED displayer arrays consists of an LED array consisting of an m+1 row, and an n+1 line which are positively connected and an LED array consisting of an m+1' row, and an n+1' which are negatively connected, the two LED arrays are connected in series, the driving device circuit adopts a three-state bridge type driving device, the row lines of the serially connected LED display array are respectively connected together, and are mutually connected with the output port of the driving device circuit having three-state output, and the echelon lines of the serially connected LED display array are respectively connected together, and are mutually connected with the other group of the corresponding output port of the driving device circuit having three-state output. The device reduces the number of the driving ports of the application system and the number of welding pads, and simplifies the hardware design of the application system, the reliability is high, in addition, the material consumption is reduced, and the production cost is decreased.
Description
Technical field:
The utility model relates to a kind of display, particularly a kind of LED display device and driving circuit thereof.
Background technology:
Up to the present, in known all led array products, generally not that common cloudy the connection is exactly sun connection altogether, Fig. 6, Fig. 7 and Fig. 8, Fig. 9 are exactly common LED charactron application example.
Fig. 6, Fig. 7 are common positive LED charactron array and dynamic driver circuit principle thereof, and Fig. 8, Fig. 9 are common cloudy LED charactron array and dynamic driver circuit principle thereof.
As everyone knows, LED is the driving device of unidirectional current, (this instructions is represented with Imin greater than causing the luminous significantly required minimum current of LED when the electric current of crossing LED from positive flow (being called forward current traditionally), all the other are same) time, we will feel that LED is luminous significantly, and cross the electric current (being called inverse current traditionally) of LED although also may can not make us feel that LED can be luminous greater than Imin from reverse direction flow, LED is damaged.Therefore in actual applications, when not needing certain led chip luminous, just order flow through it forward current less than Imin, we just are referred to as to be in and extinguish state (not luminous).
In Fig. 6, Fig. 7, when the driving port P10～P17 of driver IC all or partly is in 0 attitude (low level) and another group when driving certain position of port P20～P23 and being 1 attitude (high level), just have LED and obtain enough forward currents (its size and corresponding current-limiting resistance R
0～7Relevant, all the other are same) and luminous, extinguish state otherwise just be in.Well-known dynamic scan displaying principle that Here it is.For being total to cloudy Fig. 9 that uses, then be: be in 1 attitude and another group when driving certain position of port P20～P23 and being 0 attitude when the driving port P10～P17 of driver IC is all or part of, have also that LED obtains enough forward currents and luminous, extinguish state otherwise just be in.
There is following shortcoming in this kind LED display driver circuit: in scm application system, often owing to be subjected to the restriction of resource scarcity aspect, make when the needs Multi-bit LED is made display (particularly LED charactron), have to satisfy requirement of engineering by the expansion I/O chip; And the expansion I/O chip just means that needs increase hardware cost; Owing to expanded the I/O chip, the area of pcb board also can correspondingly need to increase, and has increased difficulty with regard to the Embedded Application of giving small size thus; Owing to expanded the I/O chip, number of pads also can correspondingly be increased, and also when the river rises the boat goes up thereupon for processing cost; Owing to increased chip and lead-in wire and solder joint, correspondingly also increased trouble spot and maintenance difficulty; Owing to increased components and parts, hardware design also can increase with the wiring difficulty, and the energy consumption of application system will inevitably increase, thereby thermal value also can increase, and this brings difficulty for the small size heat dissipation problem of Embedded Application.
The utility model content:
The technical problems to be solved in the utility model is: provide a kind of connected mode to simplify, can reduce the number of drives of application system, thereby reduce the multiplication LED display drive apparatus of number of pads, raising reliability, to solve existing LED display driver circuit above shortcomings part.
The technical scheme that solves the problems of the technologies described above is: a kind of multiplication LED display drive apparatus, comprise light-emitting diode display array and the drive circuit formed by as the LED device of light-emitting element, described light-emitting diode display array be one group by S
0, S
1, S
2... capable, the D of Sm
0, D
1, D
2, D
3... the Dn row are the led array and the S of sun connection altogether
0', S
1', S
2' ... Sm ' row, D
0', D
1', D
2', D
3' ... the cloudy altogether led array that connects of Dn ' row is connected in parallel and the light-emitting diode display array formed, and described drive circuit is ternary bridge driver, the line S of the light-emitting diode display array that this is in parallel
0... Sm and S
0' ... Sm ' is connected to the current-limiting resistance R that also passes through together separately
0, R
1, R
2... Rm or Rm ' (when m＜m ', being Rm ') or direct and one group of output port P with driving circuit of ternary output
0, P
1, P
2... Pm or Pm ' (when m＜m ', being Pm ') are connected the alignment D of the light-emitting diode display array that this is in parallel
0, D
1, D
2... Dn and D
0', D
1', D
2' ... Dn ' is connected to together and directly or the current-limiting resistance R by separately
0, R
1, R
2... Rn or Rn ' (when n＜n ', being Rn ') and another group have the output port P of the driving circuit of ternary output
0, P
1, P
2... Pn or Pn ' (when n＜n ', being Pn ') are connected, and the span of above-mentioned m, n and m ', n ' is respectively: 1≤m≤4096,1≤n≤4096,1≤m '≤4096,1≤n '≤4096.
Because adopt said structure, the LED display device of the utility model compared with prior art has following beneficial effect:
1, reduces the driver and the corresponding number of leads thereof of application system, thereby also reduced number of pads, not only can reduce the fault point and improve reliability, can also dwindle the pcb board area, more helped Embedded Application.
2, simplify the hardware design of application system, reduce the requirement of application system to the I/O quantity of CPU, can save the hardware spending of expansion I/O driving circuit, and owing to reduced the expansion I/O drive circuit system, total energy consumption correspondingly can reduce to some extent, thereby can reduce thermal value, more help Embedded Application.
3, reduce spillage of material, reduce production costs.Owing to reduced the I/O expanded circuit, the common driver lead-in wire and the number of pads of LED display have correspondingly been reduced, the conventional ADS driving method can only timesharing drive (m+1) * (n+1) individual LED at most, then can timesharing drive the individual LED of 2 (m+1) * (n+1) at most with ternary bridge driver, thereby reduce the lead-in wire consumption; For example: can make show 2 16*16 dot matrix Chinese character arrays by in the past 16 row, 32 row totally 48 drive wires taper to 32,16 have promptly been saved, relatively saved more than 33%, for LED nixie display array, can make to show that 22 8 sections LED nixie display arrays taper to 19 by in the past 30 drive wires, promptly save 11, relatively save more than 36.6%, thereby reduced spillage of material widely, reduced production cost.
4, drive lead-in wire and I/O expanded circuit owing to having reduced, thereby improved product reliability, alleviated maintenance and maintenance difficulties.
Below, the technical characterictic to the LED display device of the utility model is further described in conjunction with the accompanying drawings and embodiments.
Description of drawings:
Fig. 1: use 8+4 three-state driver timesharing to drive 4 LED charactron module CP8s4LED and 4 a kind of application circuit schematic diagrams that are total to the cloudy LED charactron module CN8s4LED that is connected of sun connection altogether
Fig. 2: the led array that is listed as sun connection altogether with 8+4 three-state driver timesharing driving 8 row, 4 is listed as the circuit theory diagrams of the cloudy led array that is connected altogether with 8 row, 4;
Fig. 3:, the D n+1 row altogether positive led array that connect capable with (m+1)+(n+1) individual three-state driver timesharing driving S m+1 is listed as the circuit theory diagrams of the cloudy led array that is connected altogether with S m+1 ', D n+1 ';
Fig. 4: the equivalent circuit diagram of ternary bridge-type driver principles;
Fig. 5: the ideal model schematic diagram of ternary driving circuit;
Fig. 6: positive altogether 8 sections LED charactron wiring schematic diagrams that connect;
Dn is the anode lead wire of common port among the figure, and Sa, Sb, Sc, Sd, Se, Sf, Sg, Sh are the cathode lead of each section LED;
Fig. 7: existing four display and dynamic scan driving circuit synoptic diagram thereof that are total to positive LED charactron;
Fig. 8: cloudy altogether 8 sections LED charactron wiring schematic diagrams that connect;
Dn ' is the cathode lead of common port among the figure, and Sa ', Sb ', Sc ', Sd ', Se ', Sf ', Sg ', Sh ' are the anode lead wire of each section LED;
Fig. 9: existing four display and dynamic scan driving circuit synoptic diagram thereof that are total to cloudy LED charactron.
Embodiment:
A kind of multiplication LED display drive apparatus is to be listed as the led array that is total to the sun connection with 8+4 three-state driver timesharing driving 8 row, 4 to be listed as the LED display device that is total to the cloudy led array that is connected with 8 row, 4.Comprise the light-emitting diode display array and constitute the ternary IC that exports bridge driver, among Fig. 1, CP8s4LED is four 8 sections positive LED nixie display arrays altogether, CN8s4LED is four 8 sections cloudy LED nixie display arrays altogether, the corresponding driving circuit is to be made of known three-state driver, represent with IC that in Fig. 1 P10～P17 and P20～P23 are that the output of this IC drives port, all these ports all are ternary;
The driving port P of the bridge driver IC of ternary output
10～P
17The section of the digital display module CP8s4LED of respectively positive together LED drives lead-in wire S
0, S
1, S
2, S
3, S
4, S
5, S
6And point drives lead-in wire S
7By current-limiting resistance R
0～R
7Link to each other, the position of the respectively positive together LED number of the driving port P20 of IC～P23 display module drives lead-in wire (promptly positive altogether common port) D
0, D
1, D
2, D
3Directly be connected, referring to Fig. 1;
The section of the digital display module CN8s4LED of the also respectively cloudy together LED of driving port P10～P17 of the bridge driver IC of ternary output drives lead-in wire S
0', S
1', S
2', S
3', S
4', S
5', S
6' and some driving lead-in wire S
7' link to each other by current-limiting resistance R0～R7, the position of the digital display module of the also respectively cloudy together LED of driving port P20～P23 of IC drives lead-in wire (promptly cloudy altogether common port) D0 ', D1 ', D2 ', D3 ' directly are connected, referring to Fig. 1.
The realistic model of this tristate output circuit is the equal of to be made of last variohm (R0H as shown in Figure 4 and R1H) and following variohm (R0L as shown in Figure 4 and R1L), they both can work in the high resistance state simultaneously and (be called resistance state this moment traditionally, all the other are same), can work in to timesharing the low-resistance value state again---promptly: when last variohm (is also referred to as brachium pontis according to purposes, all the other are same) when being in the low-resistance value state, following variohm (is also referred to as down brachium pontis according to purposes, all the other are same) must be in high resistance state (be called 1 attitude this moment traditionally, all the other are same); And when variohm was in the low-resistance value state instantly, last variohm must be in high resistance state (be called 0 attitude this moment traditionally, all the other with).
The ideal model of ternary driving circuit as shown in Figure 5, it is equivalent to a single-pole triple-throw (SPTT) mechanical type knife switch, Q is the central contact of this knife switch, its extension line is called output port P.When plug-in strip K throws to H, be in vacant state, output port P is rendered as resistance state; When plug-in strip K threw to Vcc, output port P was rendered as 1 attitude; When plug-in strip K threw to Gnd, output port P was rendered as 0 attitude.
In the utility model, described low-resistance value state is meant to flow through and can makes LED enter the required electric current of normal luminous work (to represent with Iwor later on, all the other with) state, described high resistance state is meant can not provide the luminous significantly required minimum current of the LED state of (representing with Imin that later on all the other are same) that causes.
Fig. 4 is the equivalent circuit diagram of the ternary bridge-type driver principles of explanation, among the figure, R0H and R0L form three-state driver H0, the driving port is C, R1H and R1L form three-state driver H1, the driving port is A, H0 and H1 have formed a bridge driver ABCD again, RL is its load, R0H and R1H go up brachium pontis, R0L and R1L are following brachium pontis, and end points D and B meet the anodal Vcc (with reference to 1 level) of power supply and the negative pole GND (with reference to 0 level) of power supply respectively, and a, b, c, d are the sliders of each equivalent variable resistance R 1H, R1L, R0L, R0H.When a, b all slide to when driving port A, three-state driver H1 is in resistance state, and slides to D and b when sliding to A as a, and H1 is in 1 attitude, and when a slides to A and b when sliding to B, H1 is in 0 attitude; In like manner, when c, d all slide to when driving port C, three-state driver H0 is in resistance state, and slides to D and c when sliding to C as d, and H0 is in 1 attitude, and when d slides to C and c when sliding to B, H0 is in 0 attitude.When having only the state inequality as H0 and H1, load RL just can have electric current to flow through.
In the utility model, described drive circuit with ternary output, can be the microcontroller (as: PIC series or AVR series monolithic) with ternary input/output port, also can be other common power driving circuit with ternary input-output characteristic.
As a kind of conversion of the utility model embodiment, the LED quantity of the light-emitting diode display array of described composition parallel connection can increase or reduce, that is: can be one group by S
0, S
1, S
2... capable, the D of Sm
0, D
1, D
2, D
3... the Dn row are the led array and the S of sun connection altogether
0', S
1', S
2' ... Sm ' row, D
0', D
1', D
2', D
3' ... the cloudy altogether led array that connects of Dn ' row is connected in parallel and the light-emitting diode display array formed, the line S of the light-emitting diode display array that this is in parallel
0... Sm and S
0' ... Sm ' is connected to the current-limiting resistance R that also passes through together separately
0, R
1, R
2... Rm or Rm ' (when m＜m ', for Rm '=or directly with one group of output port P with ternary driving circuit of exporting
0, P
1, P
2... Pm or Pm ' (when m＜m ', are Pm '=be connected the alignment D of the light-emitting diode display array that this is in parallel
0, D
1, D
2... Dn and D
0', D
1', D
2' ... Dn ' is connected to together and directly or the current-limiting resistance R by separately
0, R
1, R
2... Rn or Rn ' (when n＜n ', are Rn '=have the output port P of the driving circuit of ternary output with another group
0, P
1, P
2... (when n＜n ', be Pn '=be connected, the span of above-mentioned m, n and m ', n ' is respectively: 1≤m≤4096,1≤n≤4096,1≤m '≤4096,1≤n '≤4096 (referring to Fig. 3) for Pn or Pn '.Shownly among the figure be: m=m ', the special circumstances of n=n ', in the practical application, m does not need and must equate with n, m ' and n ' with n ', m with m ', n.
As required, m, n and m ', the concrete numerical value of n ' can also increase again.
In the alignment of the light-emitting diode display array of the line of the light-emitting diode display array of above-mentioned parallel connection or parallel connection, as long as a line or an alignment end wherein have current-limiting resistance just passable.
Below, be example with the utility model embodiment with the multiplication LED display drive apparatus that the led array and 8 that 8+4 three-state driver timesharing driving 8 gone, 4 row are total to the sun connection is gone, 4 row are total to the cloudy led array that is connected, circuit connecting relation and principle of work are described:
The section of the digital display module CP8s4LED of the respectively positive together LED of the driving port P10 of IC～P17 drives lead-in wire S
0, S
1, S
2, S
3, S
4, S
5, S
6And point drives lead-in wire S
7Link to each other by current-limiting resistance R0～R7, the position of the respectively positive together LED number of the driving port P20 of IC～P23 display module drives lead-in wire (promptly positive altogether common port) D
0, D
1, D
2, D
3(referring to Fig. 1, Fig. 2) directly is connected;
The section of the digital display module CN8s4LED of the also respectively cloudy together LED of driving port P10～P17 of IC drives lead-in wire S
0', S
1', S
2', S
3', S
4', S
5', S
6' and some driving lead-in wire S
7' link to each other by current-limiting resistance R0～R7, the position of the digital display module of the also respectively cloudy together LED of driving port P20～P23 of IC drives lead-in wire (promptly cloudy altogether common port) D
0', D
1', D
2', D
3' (referring to Fig. 1, Fig. 2) directly is connected;
When certain certain section of the digital display module of the altogether positive LED of needs is lighted, only need this pairing driving port of position driving lead-in wire is changed to 1 attitude, and being changed to 0 attitude, the pairing driving port of corresponding section driving lead-in wire gets final product.As: the D that make common formpiston piece
0Show " 8 " word, the state that then drives port is: P
10～P
16Be 0 attitude, P
20Be 1 attitude, P
17It is not 0 attitude.So if the resistance value of current-limiting resistance R0～R6 obtains suitable (this is that the deviser is desirable, and all the other are same), then corresponding to digital section S
0, S
1, S
2, S
3, S
4, S
5, S
6LED just can be luminous because of there being suitable working current to flow through, but corresponding to S
7LED still be in non-luminous state (referring to Fig. 1, Fig. 2) that extinguishes because the suitable working current of failing flows through.
When certain certain section of the digital display module of the altogether cloudy LED of needs is lighted, only need this pairing driving port of position driving lead-in wire is changed to 0 attitude, and being changed to 1 attitude, the pairing driving port of corresponding section driving lead-in wire gets final product.As: make the D0 ' of common cavity block show " 8 " word, the state that then drives port is: P10～P16 is 1 attitude, and P20 is 0 attitude, and P17 ' is not 1 attitude.So that if the resistance value of current-limiting resistance R0～R6 obtains is suitable, then corresponding to digital section S
0', S
1', S
2', S
3', S
4', S
5', S
6' LED just can be luminous because of there being suitable working current to flow through, but corresponding to S
7' LED still be in non-luminous state (referring to Fig. 1, Fig. 2) that extinguishes because the suitable working current of failing flows through.
Drive principle when lighting other each point or each section is same as described above, during for certain LED concrete among Fig. 1, when allowing it obtain forward working current Iwor, this LED is just lighted luminous, the forward current that control is flow through it is during less than Imin, and this LED just is in and extinguishes state.When taking the dynamic scan method of driving,,, just be enough to obtain our needed multiple different information as long as sweep frequency is enough high because human eye has the existence of persistence of vision phenomenon.
8 sections digital display modules of 4 LED in fact also are equivalent to the light-emitting diode display array (referring to Fig. 2) of 8 row, 4 row.Above-mentioned just commonly used for this and device that easily see illustrates as embodiment, but is not limited in the LED nixie display array device in this example.
In this instructions as the LED device of light-emitting element, it can be the common LED photoelectric device that human eye can directly be seen the light that it sent, also can be that human eye can not directly be seen the LED in the photoelectric isolating coupler of the light that it sent, or only send the infrared light of non-visible light or the LED device of ultraviolet light, or in the optical communication field, change used LED device as electro-optical signal.
The number of described LED all is meant the number of LED pixel, is not the number of refering in particular to led chip.A LED pixel can be made up of a plurality of led chip, not necessarily is a led chip.For example: when 2 led chip serial or parallel connections, just only constitute a pixel, and in fact 2 led chips are arranged.
Claims (4)
1. a multiplication LED display drive apparatus comprises light-emitting diode display array and the drive circuit formed by as the LED device of light-emitting element, it is characterized in that: described light-emitting diode display array be one group by S
0, S
1, S
2... capable, the D of Sm
0, D
1, D
2, D
3... the Dn row are the led array and the S of sun connection altogether
0', S
1', S
2' ... Sm ' row, D
0', D
1', D
2', D
3' ... the cloudy altogether led array that connects of Dn ' row is connected in parallel and the light-emitting diode display array formed, and described drive circuit is ternary bridge driver, the line S of the light-emitting diode display array that this is in parallel
0... Sm and S
0' ... Sm ' is connected to the current-limiting resistance R that also passes through together separately
0, R
1, R
2... Rm or Rm ' or direct and one group of output port P with driving circuit of ternary output
0, P
1, P
2... Pm or Pm ' are connected, the alignment D of the light-emitting diode display array that this is in parallel
0, D
1, D
2... Dn and D
0', D
1', D
2' ... Dn ' is connected to together and directly or the current-limiting resistance R by separately
0, R
1, R
2... Rn or Rn ' and another group have the output port P of the driving circuit of ternary output
0, P
1, P
2... Pn or Pn ' are connected, and the span of above-mentioned m, n and m ', n ' is respectively: 1≤m≤4096,1≤n≤4096,1≤m '≤4096,1≤n '≤4096.
2. multiplication LED display drive apparatus according to claim 1 is characterized in that: described element circuit with bridge driver of ternary output is to be made of two driving circuits with ternary output.
3. multiplication LED display drive apparatus according to claim 1, it is characterized in that: described driving circuit with ternary output, be microcontroller with ternary input/output port--the I/O port of PIC series or AVR series monolithic, or have the common power driving circuit of ternary input-output characteristic.
4. multiplication LED display drive apparatus according to claim 1, it is characterized in that: the LED device as light-emitting element is the common LED photoelectric device that human eye can directly be seen the light that it sent, or human eye can not directly be seen the LED in the photoelectric isolating coupler of the light that it sent, or only send the infrared light of non-visible light or the LED device of ultraviolet light, or in the optical communication field, change used LED device as electro-optical signal.
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|---|---|---|---|
| CNU2006201636072U CN201017607Y (en) | 2006-11-28 | 2006-11-28 | Multiply LED display driver apparatus |
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|---|---|---|---|
| CNU2006201636072U CN201017607Y (en) | 2006-11-28 | 2006-11-28 | Multiply LED display driver apparatus |
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| CN102194393A (en) * | 2011-06-21 | 2011-09-21 | 深圳市微芯集成电路设计有限公司 | LED (Light-Emitting Diode) display driving circuit |
| CN102723055A (en) * | 2012-06-01 | 2012-10-10 | 深圳市明微电子股份有限公司 | LED display panel, system and equipment |
| CN103646626A (en) * | 2013-12-27 | 2014-03-19 | 苏州天微工业技术有限公司 | Display screen and display screen matrix display driving method |
| CN104680964A (en) * | 2013-11-26 | 2015-06-03 | 美的集团股份有限公司 | Dish washing machine and LED (Light Emitting Diode) Nixie tube display driving circuit and method thereof |
| CN106023868A (en) * | 2016-07-26 | 2016-10-12 | 广东美的厨房电器制造有限公司 | Nixie tube drive circuit, display module group and household electrical appliance |
| CN106297618A (en) * | 2015-06-08 | 2017-01-04 | 无锡晶哲科技有限公司 | A kind of algorithm reducing seven segment digital tubes operating power consumption |
| CN110675808A (en) * | 2019-10-15 | 2020-01-10 | 珠海格力电器股份有限公司 | Display circuit, display device and display equipment |
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2006
- 2006-11-28 CN CNU2006201636072U patent/CN201017607Y/en not_active Expired - Fee Related
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| CN102194393A (en) * | 2011-06-21 | 2011-09-21 | 深圳市微芯集成电路设计有限公司 | LED (Light-Emitting Diode) display driving circuit |
| CN102723055A (en) * | 2012-06-01 | 2012-10-10 | 深圳市明微电子股份有限公司 | LED display panel, system and equipment |
| CN102723055B (en) * | 2012-06-01 | 2015-06-24 | 深圳市明微电子股份有限公司 | LED display panel, system and equipment |
| CN104680964A (en) * | 2013-11-26 | 2015-06-03 | 美的集团股份有限公司 | Dish washing machine and LED (Light Emitting Diode) Nixie tube display driving circuit and method thereof |
| CN103646626A (en) * | 2013-12-27 | 2014-03-19 | 苏州天微工业技术有限公司 | Display screen and display screen matrix display driving method |
| CN106297618A (en) * | 2015-06-08 | 2017-01-04 | 无锡晶哲科技有限公司 | A kind of algorithm reducing seven segment digital tubes operating power consumption |
| CN106023868A (en) * | 2016-07-26 | 2016-10-12 | 广东美的厨房电器制造有限公司 | Nixie tube drive circuit, display module group and household electrical appliance |
| CN106023868B (en) * | 2016-07-26 | 2019-04-19 | 广东美的厨房电器制造有限公司 | Nixie tube drive circuit, display module and household electrical appliance |
| CN110675808A (en) * | 2019-10-15 | 2020-01-10 | 珠海格力电器股份有限公司 | Display circuit, display device and display equipment |
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