CN100401358C - Circuit and method for driving LED panel display - Google Patents
Circuit and method for driving LED panel display Download PDFInfo
- Publication number
- CN100401358C CN100401358C CNB2004100059567A CN200410005956A CN100401358C CN 100401358 C CN100401358 C CN 100401358C CN B2004100059567 A CNB2004100059567 A CN B2004100059567A CN 200410005956 A CN200410005956 A CN 200410005956A CN 100401358 C CN100401358 C CN 100401358C
- Authority
- CN
- China
- Prior art keywords
- display
- signal
- processing unit
- data
- mentioned
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000008676 import Effects 0.000 claims 1
- 230000005611 electricity Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 10
- 239000000725 suspension Substances 0.000 description 8
- 230000009183 running Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
Images
Abstract
The present invention relates to a drive circuit of an LED panel display and a drive method thereof, which is used for proving a plurality of drive modes of the LED panel display. The drive circuit comprises a control processing unit, a scanning drive chip, a data drive chip, a row control interface and a series control interface, wherein the control processing unit is used for outputting a mode control signal; the scanning drive chip is connected with the control processing unit and is used for providing a scanning signal; the data drive chip is connected with the control processing unit and the scanning drive chip and is used for providing a data signal; the row control interface is connected with the row lines of the display, the control process unit, the scanning drive chip and the data drive chip and is used as a switching selection of the row line of signal input; the series control interface is connected with the series lines of the display, the control processing unit, the scanning drive chip and the data drive chip and is used as a switching selection of the series lines of the signal input. The present invention can improve the lumination drive mode that the traditional LED panel display lacks flexibility to obtain lumination control with flexibility, maximum economy and maximum electricity saving and maximum efficiency.
Description
Technical field
The present invention relates to a kind of driving circuit and driving method thereof of LED plane display, refer to a kind of LED plane circuit of display driving and driving method thereof especially with multiple drive modes.
Background technology
Development along with Information technology, light emitting diode (LED) flat-panel screens becomes the main flow in the electronic application product gradually, at present, most of general LED plane display is usually used in advertisement periodical plate, movable propaganda periodical plate, vehicles pilot lamp, large-scale outdoor video wall or the like, the effect that animation that is produced by control LED plane display lighting and literal can reach advertisement and propaganda, and can be used as the warning function of traffic light fixture, therefore, for Commdity advertisement, movable propaganda, the data transfer of real-time information is benefited with showing greatly.
Please refer to Fig. 1, it is the driving circuit block scheme of known LED plane display.Traditional LED plane circuit of display driving, usually connect one scan chip for driving 22 to a plurality of lines (R1, R2, R3...Rn) of display 20, be used for supplying sweep signal and give above-mentioned line (R1, R2, R3...Rn), and connect a data driving chip 24 to a plurality of alignments (C1, C2, C3...Cn) of display 20, be used for supplies data signals to above-mentioned alignment (C1, C2, C3...Cn).Via of the control operation of this scanning drive chip 22 with this data driving chip 24, feasible display unit 202 runnings, luminous that are connected between line and the alignment.
Therefore, traditional LED plane circuit of display driving only uses above-mentioned line (R1, R2, R3...Rn) to carry out scanning motion is also done data-signal by above-mentioned alignment (C1, C2, C3...Cn) transmission, to carry out luminous demonstration.In fact, traditional LED plane display shortage has the Flexibility Control function mode, to obtain best luminescence efficiency, so on actual field of employment, can't obtain having dirigibility, the light emitting drive control of most economical, power saving and full blast as advertisement periodical plate, movable propaganda periodical plate, vehicles pilot lamp, large-scale outdoor video wall or the like.
Summary of the invention
The object of the present invention is to provide a kind of driving circuit and driving method thereof of LED plane display, it can provide multiple drive modes, and, demonstration luminous in order to driven for emitting lights diode flat-panel screens is to overcome the above-mentioned defective that exists in the prior art.
Above-mentioned purpose of the present invention is achieved in that a kind of driving circuit and driving method thereof of LED plane display, connects row control interface and row control interface respectively on the line and alignment of display.And utilize controlled processing unit to connect row control interface and row control interface, in order to control the running of capable control interface and row control interface.
Moreover, scanning drive chip and data driving chip are connected to capable control interface and row control interface, in order to output scanning signal and data-signal, and pass the signal on the line and alignment of display, to carry out multiple drive modes according to the control of controlled processing unit.
In the above-mentioned explanation, drive pattern of the present invention comprises:
Pattern one: line scans, simultaneously the alignment input data signal.
Pattern two: alignment scans, simultaneously the line input data signal.
Pattern three: line input DC power, alignment ground connection simultaneously.
Pattern four: the line input DC power, alignment is according to optionally connected ground of control signal or suspension joint simultaneously.
The driving circuit of the invention described above LED plane display, in order to control a display, this display has at least one display unit, and above-mentioned display unit connects corresponding a plurality of alignments and a plurality of line respectively, include: a controlled processing unit, in order to export a mode control signal; The one scan chip for driving is connected in this controlled processing unit, in order to the one scan signal to be provided; One data driving chip is connected in this controlled processing unit and this scanning drive chip, in order to a data-signal to be provided; Delegation's control interface is connected in above-mentioned line, this controlled processing unit, this scanning drive chip and this data driving chip, receives this mode control signal, switches in order to the selection of making signal input line; And a row control interface, be connected in above-mentioned alignment, this controlled processing unit, this scanning drive chip and this data driving chip, receive this mode control signal, switch in order to the selection of making signal input alignment.
The driving method of the invention described above LED plane display, wherein this display has at least one display unit, above-mentioned display unit connects corresponding a plurality of alignments and multirow line respectively, and this method comprises the following step: the optimum display mode of judging this display; Select best display mode; The input scan signal is to this display; And input data signal is to this display.
The present invention can improve the light emitting drive mode of the shortage dirigibility of traditional LED plane display, and can obtain having dirigibility as actual fields of employment such as advertisement periodical plate, movable propaganda periodical plate, vehicles pilot lamp, large-scale outdoor video walls, the light emitting control of most economical, power saving and full blast.
Below in conjunction with specific embodiment and accompanying drawing thereof, the present invention is described in further detail, yet accompanying drawing only is used to provide reference and explanation, is not to be used for the present invention is limited.
Description of drawings
Fig. 1 is the driving circuit block scheme of known LED plane display;
Fig. 2 is the driving circuit block scheme of LED plane display of the present invention;
Fig. 3 is according to the first drive pattern circuit diagram of the present invention;
Fig. 4 is according to the second drive pattern circuit diagram of the present invention;
Fig. 5 is according to the 3rd drive pattern circuit diagram of the present invention;
Fig. 6 is according to 4 wheel driven dynamic model formula circuit diagram of the present invention; And
Fig. 7 is the driving method process flow diagram for LED plane display of the present invention.
Wherein, description of reference numerals is as follows:
20 displays
202 display units
22 scanning drive chips
24 data driving chip
R1, R2, R3...Rn line
C1, C2, C3...Cn alignment
10 displays
12 row control interfaces
14 row control interfaces
16 controlled processing units
17 power-supply units
18 scanning drive chips
19 data driving chip
R1, R2, R3, R4 line
C1, C2, C3, C4 alignment
CV1 first direct supply
CV2 second direct supply
Is1, Is2, Is3, Is4 data-signal
G ground connection zero potential F suspension joint point
Embodiment
Please refer to Fig. 2, it is for the driving circuit block scheme of LED plane display of the present invention.As shown in the figure, be to be interwoven on the display 10 by crisscross line (R1, R2, R3...Rn) and alignment (C1, C2, C3...Cn), staggered line and the alignment of each group can be used for controlling a display unit, and for example line R1 and alignment C1 can be used for controlling display unit 102.Moreover a delegation's control interface 12 and a row control interface 14 are connected respectively to above-mentioned line (R1, R2, R3, Rn) and above-mentioned alignment (C1, C2, C3...Cn), and are connected to a controlled processing unit 16.Controlled processing unit 16 transmits a mode control signal and gives this row control interface 12 and this row control interface 14, selects to switch with the input of this row control interface 14 in order to control this row control interface 12.This display unit is a light emitting diode (LED) or is an Organic Light Emitting Diode (OLED) in the above-mentioned explanation.
In the above-mentioned explanation, one scan chip for driving 18 is connected to this row control interface 12, this row control interface 14 and this controlled processing unit 16, and the control of accepting controlled processing unit 16 is in order to output one scan signal.And a data driving chip 19 is connected to this row control interface 12, this row control interface 14 and this controlled processing unit 16, and the control of accepting controlled processing unit 16 is in order to export a data-signal.
Also have a power-supply unit 17 to be connected in control interface 12 and controlled processing unit 16, arrive this row control interface 12 and the required electric power of supply circuit in order to direct supply to be provided.Power-supply unit 17 and then be sent to the mode control signal of this row control interface 12 according to controlled processing unit 16 is in order to provide required direct supply to above-mentioned line (R1, R2, R3...Rn).
Please cooperate Fig. 2, with reference to figure 3, it is according to the first drive pattern circuit diagram of the present invention, as shown in the figure, is example with the display 10 of one 4 * 4 light emitting diode matrixs.Controlled processing unit 16 transfer mode control signals are to this row control interface 12, and control row control interface 12, make its input select to switch to the first direct supply CV1, and the first direct supply CV1 is provided by power-supply unit 17.And controlled processing unit 16 these scanning drive chips 18 of control arrive capable control interface 12 in order to sweep signal to be provided.According to sweep signal, row control interface 12 with the electric power of the first direct supply CV1 in regular turn and repeat be sent to above-mentioned line (R1, R2, R3, R4).
Simultaneously, controlled processing unit 16 transfer mode control signals make its input select to switch to data driving chip 19 to this row control interface 14.Data driving chip 19 provides data-signal (Is1, Is2, Is3, Is4), and is sent to above-mentioned alignment (C1, C2, C3, C4), to provide display 10 luminous and demonstrations.In the above-mentioned explanation, this data-signal is a current signal.
In the above-mentioned explanation, this moment, the driving of display 10 was that line scans, and passed through the drive pattern of alignment input data signal (Is1, Is2, Is3, Is4) simultaneously.
Please cooperate Fig. 2, with reference to figure 4, it is according to the second drive pattern circuit diagram of the present invention, as shown in the figure, is example with the display 10 of one 4 * 4 light emitting diode matrixs.Controlled processing unit 16 transfer mode control signals are to this row control interface 14, and control row control interface 14, make its input select to switch to a ground connection zero potential G.And controlled processing unit 16 these scanning drive chips 18 of control arrive row control interface 14 in order to sweep signal to be provided.According to sweep signal, row control interface 14 with ground connection zero potential G in regular turn and repeat be sent to above-mentioned alignment (C1, C2, C3, C4).
Simultaneously, controlled processing unit 16 transfer mode control signals are to this row control interface 12, make its input select to switch to data driving chip 19, data driving chip 19 provides data-signal (Is1, Is2, Is3, Is4), and be sent to above-mentioned line (R1, R2, R3, R4), so that display 10 luminous and demonstrations.
In the above-mentioned explanation, this moment, the driving of display 10 was that alignment scans, and passed through the drive pattern of line input data signal (Is1, Is2, Is3, Is4) simultaneously.
Please cooperate Fig. 2, with reference to figure 5, it is according to the 3rd drive pattern circuit diagram of the present invention, as shown in the figure, is example with the display 10 of one 4 * 4 light emitting diode matrixs.Controlled processing unit 16 transfer mode control signals are to this row control interface 12, and control row control interface 12 makes its input select to switch to the second direct supply CV2, and simultaneously the electric power of the second direct supply CV2 being sent to above-mentioned line (R1, R2, R3, R4), the second direct supply CV2 is provided by power-supply unit 17.
Simultaneously, controlled processing unit 16 transfer mode control signals make its input select to switch to ground connection zero potential G or suspension joint point F, and make ground connection zero potential G be connected to above-mentioned alignment (C1, C2, C3, C4) simultaneously to this row control interface 14.At this moment, display 10 is full-luminous state, and shows.
In the above-mentioned explanation, this moment, the driving of display 10 was the line input DC power, simultaneously the drive pattern (being full-luminous state) of alignment ground connection.
Please cooperate Fig. 2, with reference to figure 6, it is according to 4 wheel driven dynamic model formula circuit diagram of the present invention, as shown in the figure, is example with the display 10 of one 4 * 4 light emitting diode matrixs.Controlled processing unit 16 transfer mode control signals are to this row control interface 12, and control row control interface 12, make its input select to switch to the second direct supply CV2, and the electric power of the second direct supply CV2 is sent to above-mentioned line (R1, R2, R3, R4) simultaneously, the second direct supply CV2 is provided by power-supply unit 17.
Simultaneously, controlled processing unit 16 transfer mode control signals are to this row control interface 14, make its input select to switch to ground connection zero potential G or suspension joint point F, as shown in Figure 6, it is connected to alignment C1, C2, C3 for ground connection zero potential G, and suspension joint point F is connected to alignment C4, at this moment, the display unit that this alignment C4 connects is not luminous, and the display unit of alignment C1, C2, C3 connection is full-luminous.
In the above-mentioned explanation, this moment, the driving of display 10 was the line input DC power, and alignment is according to the drive pattern of optionally connected ground of control signal or suspension joint simultaneously.
Next, introduce the driving method of LED plane display according to the present invention.Please refer to Fig. 7, it is for the driving method process flow diagram of LED plane display of the present invention.This method flow is as follows: at first, judge the optimum display mode (S100) of a display; Then, select best display mode (S102); Then, the input scan signal is to display (S104); At last, input data signal is to display (S106).And this display is a light emitting diode indicator or is an organic light emitting diode display.
In the said process, after selecting best display mode (S102) step, also then have, supply two power supplys at least one line (S105); At last, input select signal is at least one alignment (S107).
Please cooperate Fig. 2, with reference to figure 7, in the driving method of LED plane display of the present invention, can judge the optimum display mode of display 10 by controlled processing unit 16 according to specification, size, size and the data-signal of display 10, display mode has, pattern one: line scans, simultaneously the alignment input data signal.Pattern two: alignment scans, simultaneously the line input data signal.Pattern three: line input DC power, alignment ground connection simultaneously.Pattern four: the line input DC power, alignment is according to optionally connected ground of control signal or suspension joint simultaneously.
Then, select in the above-mentioned explanation display mode best in each display mode.Then, controlled processing unit 16 gated sweep chip for driving 18 are in order to output one scan signal, and according to controlled processing unit 16 selected display modes, provide this sweep signal to display 10.
At last, controlled processing unit 16 control data chip for driving 19 are in order to exporting a data-signal, and according to controlled processing unit 16 selected display modes, provide this data-signal to display 10.
In the above-mentioned explanation, when selecting best display mode to be pattern three, pattern four, power-supply unit 17 provides direct supply to arrive above-mentioned line (R1, R2, R3...Rn).Then, controlled processing unit 16 input select signals are to above-mentioned alignment (C1, C2, C3...Cn), in order to control linkage luminous and demonstration in the display unit of above-mentioned alignment (C1, C2, C3...Cn).
In sum, the driving circuit of LED plane display of the present invention and driving method thereof have: line scan and simultaneously the alignment input data signal, alignment scans and simultaneously line input data signal, line input DC power and simultaneously alignment ground connection and line input DC power and simultaneously alignment according to drive patterns such as optionally connected ground of control signal or suspension joints.
Therefore, the present invention can improve the light emitting drive mode of the shortage dirigibility of traditional LED plane display, and can on actual field of employment, obtain having dirigibility as advertisement periodical plate, movable propaganda periodical plate, vehicles pilot lamp, large-scale outdoor video wall or the like, the light emitting control of most economical, power saving and full blast.
The above-mentioned accompanying drawing that discloses, explanation only are embodiments of the invention, and all those of ordinary skill in the art can do other all improvement according to above-mentioned explanation, and these changes still belong in inventive concept of the present invention and the protection domain.
Claims (7)
1. the driving circuit of a LED plane display, in order to control a display, this display has at least one display unit, and above-mentioned display unit connects corresponding a plurality of alignments and a plurality of line respectively, includes:
One controlled processing unit is in order to export a mode control signal;
The one scan chip for driving is connected in this controlled processing unit, in order to the one scan signal to be provided;
One data driving chip is connected in this controlled processing unit and this scanning drive chip, in order to a data-signal to be provided;
Delegation's control interface is connected in above-mentioned line, this controlled processing unit, this scanning drive chip and this data driving chip, receives this mode control signal, switches in order to the selection of making signal input line;
One row control interface is connected in above-mentioned alignment, this controlled processing unit, this scanning drive chip and this data driving chip, receives this mode control signal, switches in order to the selection of making signal input alignment; And
One power-supply unit is connected in this row control interface and this controlled processing unit, in order to provide direct supply to above-mentioned line and provide circuit required electric power.
2. the driving circuit of LED plane display as claimed in claim 1 is characterized in that above-mentioned display unit is a light emitting diode.
3. the driving circuit of LED plane display as claimed in claim 1 is characterized in that above-mentioned display unit is an Organic Light Emitting Diode.
4. the driving circuit of LED plane display as claimed in claim 1 is characterized in that this data-signal is a current signal.
5. the driving method of a LED plane display, wherein this display has at least one display unit, and above-mentioned display unit connects corresponding a plurality of alignments and a plurality of line respectively, and this method comprises the following step:
Judge the optimum display mode of this display;
Select best display mode;
According to selected optimal mode, flow power supply to above-mentioned a plurality of lines with supply always;
According to selected optimal mode, select the selection signal of alignment to corresponding alignment to import one;
According to selected optimal mode, the input scan signal is to this display; And
According to selected optimal mode, input data signal is to this display.
6. the driving method of LED plane display as claimed in claim 5 is characterized in that this display is a light emitting diode indicator.
7. the driving method of LED plane display as claimed in claim 5 is characterized in that this display is an organic light emitting diode display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100059567A CN100401358C (en) | 2004-02-23 | 2004-02-23 | Circuit and method for driving LED panel display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100059567A CN100401358C (en) | 2004-02-23 | 2004-02-23 | Circuit and method for driving LED panel display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1661653A CN1661653A (en) | 2005-08-31 |
| CN100401358C true CN100401358C (en) | 2008-07-09 |
Family
ID=35010944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100059567A Expired - Fee Related CN100401358C (en) | 2004-02-23 | 2004-02-23 | Circuit and method for driving LED panel display |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100401358C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101004894B (en) * | 2006-10-20 | 2010-05-19 | 北京巨数数字技术开发有限公司 | Scan type LED display unit, and method for eliminating latent brightness of previous line |
| CN113012624B (en) * | 2020-07-31 | 2022-04-29 | 重庆康佳光电技术研究院有限公司 | LED display device and driving method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0816130A (en) * | 1994-07-01 | 1996-01-19 | Toshiba Corp | Led dot matrix display and its light control method |
| US20020044782A1 (en) * | 2000-10-13 | 2002-04-18 | Nec Corporation | Image display apparatus with driving modes and method of driving the same |
| CN1440014A (en) * | 2002-02-21 | 2003-09-03 | 友达光电股份有限公司 | Driving circuit in display screen |
| JP2003302936A (en) * | 2002-03-29 | 2003-10-24 | Internatl Business Mach Corp <Ibm> | Display device, oled panel, device and method for controlling thin film transistor, and method for controlling oled display |
-
2004
- 2004-02-23 CN CNB2004100059567A patent/CN100401358C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0816130A (en) * | 1994-07-01 | 1996-01-19 | Toshiba Corp | Led dot matrix display and its light control method |
| US20020044782A1 (en) * | 2000-10-13 | 2002-04-18 | Nec Corporation | Image display apparatus with driving modes and method of driving the same |
| CN1440014A (en) * | 2002-02-21 | 2003-09-03 | 友达光电股份有限公司 | Driving circuit in display screen |
| JP2003302936A (en) * | 2002-03-29 | 2003-10-24 | Internatl Business Mach Corp <Ibm> | Display device, oled panel, device and method for controlling thin film transistor, and method for controlling oled display |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1661653A (en) | 2005-08-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100380430C (en) | Pixel module for use in a large-area display | |
| CN201057388Y (en) | Linear LED screen | |
| CN102612231B (en) | LED (Light-Emitting Diode) illumination dimming device | |
| CN201159981Y (en) | Scanning type LED display unit | |
| CN101545591B (en) | PCB light bar used in LED display and transmission control system thereof | |
| CN110121230A (en) | LED drive circuit, LED light device and driving method based on two-way pwm signal | |
| CN106683622A (en) | LOCAL DIMMING backlight drive circuit and electronic device | |
| CN101730341B (en) | Power line carrier communication LED light source intelligent drive device | |
| CN104540284A (en) | LED illumination and dimming device | |
| CN103415127B (en) | Intelligence color LED landscape lamp control system and method | |
| CN104853489B (en) | Light emitting diode driving circuit and driving system | |
| CN100401358C (en) | Circuit and method for driving LED panel display | |
| CN202563873U (en) | Eighth scanning full-color display screen | |
| CN103813579B (en) | Light emitting diode driving circuit and driving system of light emitting diode | |
| CN203288216U (en) | Energy-efficient LED screen dynamic-scanning apparatus and energy-efficient LED screen | |
| CN100553391C (en) | LED driving circuit and series LED light system | |
| CN202799283U (en) | Light emitting diode driving circuit and driving system | |
| CN103280184A (en) | Dynamic scanning device of energy-saving LED screen, energy-saving LED screen and dynamic scanning method | |
| CN101566283B (en) | Concentrative-driving combined LED light fitting | |
| CN201177927Y (en) | Three-dimensional display system | |
| CN203242251U (en) | LED advertising lamp box | |
| CN204178679U (en) | A kind of voltage-operated device | |
| CN201513765U (en) | Led lamp | |
| CN201203736Y (en) | Liquid crystal display screen using modularization LED backlight device | |
| CN102740542A (en) | LED (light-emitting diode) lamp and LED control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080709 Termination date: 20120223 |