CN105609045A - Driving chip cascade system and method of multi-screen driving - Google Patents
Driving chip cascade system and method of multi-screen driving Download PDFInfo
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- CN105609045A CN105609045A CN201511008063.2A CN201511008063A CN105609045A CN 105609045 A CN105609045 A CN 105609045A CN 201511008063 A CN201511008063 A CN 201511008063A CN 105609045 A CN105609045 A CN 105609045A
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000004891 communication Methods 0.000 claims description 15
- 238000012937 correction Methods 0.000 claims description 5
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- 238000010586 diagram Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
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Classifications
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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]
- G09G3/3208—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] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3216—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] organic, e.g. using organic light-emitting diodes [OLED] using a passive matrix
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- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The present invention provides a driving chip cascade system and method of multi-screen driving. The system comprises a display screen panel which is divided into a first area and a second area based on a scanning end, a host machine driving chip which is used for driving the scanning end and common end of the first area, and a slave machine driving chip which is used for driving the scanning end and common end of the second area.
Description
Technical field
The present invention relates to display screen and drive field.
Background technology
Current, small-medium size display applications demand is increasingly extensive, STN (SuperTwistedNematic, supertwistTo row)-LCD display occupies main flow, but its screen response time is slow, picture brightness is low, and display effect is paid no attention toThink. PMOLED (PassiveMatrixOLED, passive type organic electric exciting light-emitting diode) is due to its manufacturing processThe superiority developments such as simply, cost is low, display efficiency is high are rapid; But, because PMOLED is subject to material own and drivesThe restriction of flowing mode, single screen cannot realize large scale, high-resolution shows requirement, need to realize by the splicing of multi-screen body;Meanwhile, single host driven of many employings in the application of the manystage cascade connection of current common STN-LCD, many modes that slave is interconnected,As shown in Figure 1, the common port of display screen (com) is unified by host driven, the scanning end of display screen (segment)Combined by main frame and some slaves, this cascade system is had relatively high expectations to main frame com driving force, large resolution ratio mouldGroup needs multiple slaves, and PCB layout complexity increases, and screen body display effect is limited; Match with screen body tiled displayPMOLEDDriverIC cascade correlative study less.
Summary of the invention
The problem existing for conventional method in above description, in conjunction with market application demand, the invention provides a kind ofThe PMOLEDdriverIC outlet method of holding horizontal cascade splicing, the different Configurations of planting IC by list are master and slaveFunction, adopts this kind of outlet method to be reduced in horizontal application of the manystage cascade connection process, to shield signal between body and driverIC to connectThe complexity connecing, the each self-driven corresponding screen of host and slave processors can reduce different difference of shielding body display effects by body, strengthens aobviousShow effect.
The invention provides the driving chip cascade system that a kind of split screen drives. Described system comprises:
Display screen panel, described display pannel is divided into first area and second area based on scanning end;
Host driven chip, described host driven chip is for driving scanning end and the common port of described first area;
Slave drives chip, and described slave drives chip for driving scanning end and the common port of described second area.
In one embodiment, described first area is identical with described second area area.
In one embodiment, described host driven chip comprises:
Only three signal of communication lines;
The driver module that drives scanning end, the driver module of described driving scanning end drives the whole of described display screen panelHalf in scanning end;
Drive the driver module of common port.
In one embodiment, described slave drives chip to comprise:
Three signal of communication lines;
The driver module that drives scanning end, the driver module of described driving scanning end drives the whole of described display screen panelHalf in scanning end;
Drive the driver module of common port.
In one embodiment, described three signal of communication lines comprise:
Clock signal of system line, in order to ensure that described host driven chip and described slave drive the clock source of chip identical;
Serial data signal line is logical for the data that under system clock control, described host driven chip need to be shownCross serial shift mode and send described slave driving chip to;
Frame synchronizing signal line, drives chip to carry out sequential correction for every frame to described host driven chip and described slave.
In one embodiment, described display screen panel is that passive type organic electric exciting light-emitting diode (PMOLED) is aobviousShow panel plate.
The present invention also provides a kind of Cascading Methods of display driver chip, and described method comprises:
Display screen panel is divided into first area and second area based on scanning end;
Host driven chip is provided, drives scanning end and the common port of described first area;
Provide slave to drive chip, drive scanning end and the common port of described second area.
In one embodiment, described first area is identical with described second area area.
In one embodiment, described host driven chip comprises:
Three signal of communication lines;
The driver module that drives scanning end, the driver module of described driving scanning end drives the whole of described display screen panelHalf in scanning end;
Drive the driver module of common port.
In one embodiment, described slave drives chip to comprise:
Only three signal of communication lines;
The driver module that drives scanning end, the driver module of described driving scanning end drives the whole of described display screen panelHalf in scanning end;
Drive the driver module of common port.
In one embodiment, described three signal of communication lines comprise:
Clock signal of system line, in order to ensure that described host driven chip and described slave drive the clock source of chip identical;
Serial data signal line is logical for the data that under system clock control, described host driven chip need to be shownCross serial shift mode and send described slave driving chip to;
Frame synchronizing signal line, drives chip to carry out sequential correction for every frame to described host driven chip and described slave.
In one embodiment, described display screen panel is that passive type organic electric exciting light-emitting diode (PMOLED) is aobviousShow panel plate.
Brief description of the drawings
Above summary of the invention of the present invention and detailed description of the invention below can obtain better in the time reading by reference to the accompanying drawingsUnderstand. It should be noted that, accompanying drawing is only as the example of claimed invention. In the accompanying drawings, identical accompanying drawingMark represents same or similar element.
Fig. 1 illustrates the schematic diagram that STN-LCD cascade of the prior art shows;
Fig. 2 illustrates the PMOLEDDriverIC cascade schematic diagram according to one embodiment of the invention;
Fig. 3 illustrates the slave data interaction according to one embodiment of the invention.
Detailed description of the invention
In detailed description of the invention, describe below detailed features of the present invention and advantage in detail, its content is enough to make anyThose skilled in the art understand technology contents of the present invention and according to this implement, and according to the disclosed description of this description,Claim and accompanying drawing, those skilled in the art can understand object and the advantage that the present invention is relevant easily.
Fig. 1 illustrates the schematic diagram that STN-LCD cascade of the prior art shows. Tradition STN-LCD is only driven by main frameMoving, slave mutual contact mode drives signal, and PCB cabling that need be longer, considers cabling loss of signal, actual slaveA little less than holding screen body driving force than main frame, slave end display effect is partially dark compared with main frame, and overall display effect is limited. And,Adopt cascade system of the prior art, main frame and slave all need more holding wire, for example, and power signal line,Slave oneself does not produce power signal line, and need to obtain power supply signal from main frame. This has also increased from another point of viewDesign complexities.
The method that the present invention adopted subregion drive, reduce slave communication complexity promotes entirety and shows effectReally.
Fig. 2 illustrates the PMOLEDDriverIC cascade schematic diagram according to one embodiment of the invention. As shown in Figure 2,For horizontal application of the manystage cascade connection example, in figure, whole PMOLED viewing area is divided into two regions, left and right and realizes subregionDrive, viewing area, the left side is driven by DriverICmaster, and viewing area, the right is subject to driverICslave'sDrive; Master and slaveIC function, without any difference, only need can realize host and slave processors by corresponding configurationFunction;
The command operating source of host and slave processors is identical, and segment, com and power supply etc. are by host and slave processors chip internal separatelyCircuit drives responds host computer instruction complete operation simultaneously, due to driving force between the different chips of similar chipDifference is very little, can ensure the equilibrium of whole screen body display effect, improves display effect.
In addition, host and slave processors of the present invention only 3 radical word line set signals complete data communication. These three holding wires are: clk_sys(clock signal of system line), da_sft (serial data signal line), frm_sync (frame synchronizing signal line).
The signal of communication of host and slave processors data is reduced to 3 by this method, is respectively clk_sys, da_sft, frm_sync:Clk_sys clock signal of system line ensures that host and slave processors clock source is identical; Da_sft serial data signal is in system clock controlThe data that under system, slave need to be shown sequence order and send slave to by serial shift mode; Frm_sync frame synchronization letterNumber for every frame, host and slave processors is carried out to sequential correction, to reach the object of master and slave simultaneous display, the existence of this signalAntijamming capability to whole system has a certain upgrade, in the time of slave logic generation entanglement, and can be real by this signalExisting main frame is proofreaied and correct the sequential of slave; The minimizing of slave correlation signal line is for reducing later stage module PCB layout complexityDegree effect promoting is remarkable, the antijamming capability of whole system is also had to certain lifting simultaneously.
Fig. 3 illustrates the slave data interaction according to one embodiment of the invention. As shown in Figure 3, displaying contents is by leadingMachine unified distribution, host computer sends displaying contents after main frame to, and main frame shows that according to slave demand is suitable by data in advanceOrder arranges, and sends demonstration data to slave end for showing by serial shift mode.
Here the term adopting and form of presentation are just for describing, and the present invention also should not be limited to these terms and statement.Use these terms and statement and do not mean that the equivalent features of getting rid of any signal and description (or wherein part), should recognizeKnow and also should be included within the scope of claim to the various amendments that may exist. Other amendments, variation and replacement also mayExist. Accordingly, claim should be considered as covering all these equivalents.
Equally, although it is pointed out that the present invention describes with reference to current specific embodiment, this technologyThose of ordinary skill in field will be appreciated that, above embodiment is only for the present invention is described, do not departing fromIn the situation of spirit of the present invention, also can make variation or the replacement of various equivalences, therefore, as long as in essence essence of the present inventionVariation, modification to above-described embodiment in god's scope all will drop in the application's the scope of claims.
Claims (12)
1. the driving chip cascade system that split screen drives, is characterized in that, described system comprises:
Display screen panel, described display pannel is divided into first area and second area based on scanning end;
Host driven chip, described host driven chip is for driving scanning end and the common port of described first area;
Slave drives chip, and described slave drives chip for driving scanning end and the common port of described second area.
2. driving chip cascade system as claimed in claim 1, is characterized in that, described first area and described inSecond area area is identical.
3. driving chip cascade system as claimed in claim 1, is characterized in that, described host driven chip bagDraw together:
Only three signal of communication lines;
The driver module that drives scanning end, the driver module of described driving scanning end drives the whole of described display screen panelHalf in scanning end;
Drive the driver module of common port.
4. driving chip cascade system as claimed in claim 1, is characterized in that, described slave drives chip bagDraw together:
Three signal of communication lines;
The driver module that drives scanning end, the driver module of described driving scanning end drives the whole of described display screen panelHalf in scanning end;
Drive the driver module of common port.
5. driving chip cascade system as claimed in claim 1, is characterized in that, described three signal of communication linesComprise:
Clock signal of system line, in order to ensure that described host driven chip and described slave drive the clock source of chip identical;
Serial data signal line is logical for the data that under system clock control, described host driven chip need to be shownCross serial shift mode and send described slave driving chip to;
Frame synchronizing signal line, drives chip to carry out sequential correction for every frame to described host driven chip and described slave.
6. the system as claimed in claim 1, is characterized in that, described display screen panel is that passive type Organic Electricity swashsLight emitting diode (PMOLED) display screen panel.
7. Cascading Methods for display driver chip, is characterized in that, described method comprises:
Display screen panel is divided into first area and second area based on scanning end;
Host driven chip is provided, drives scanning end and the common port of described first area;
Provide slave to drive chip, drive scanning end and the common port of described second area.
8. method as claimed in claim 7, is characterized in that, described first area and described second area areaIdentical.
9. method as claimed in claim 7, is characterized in that, described host driven chip comprises:
Three signal of communication lines;
Drive the driver module of scanning end;
Drive the driver module of common port.
10. method as claimed in claim 7, is characterized in that, described slave drives chip to comprise:
Only three signal of communication lines;
Drive the driver module of scanning end;
Drive the driver module of common port.
11. methods as claimed in claim 7, is characterized in that, described three signal of communication lines comprise:
Clock signal of system line, in order to ensure that described host driven chip and described slave drive the clock source of chip identical;
Serial data signal line is logical for the data that under system clock control, described host driven chip need to be shownCross serial shift mode and send described slave driving chip to;
Frame synchronizing signal line, drives chip to carry out sequential correction for every frame to described host driven chip and described slave.
12. methods as claimed in claim 7, is characterized in that, described display screen panel is that passive type Organic Electricity swashsLight emitting diode (PMOLED) display screen panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511008063.2A CN105609045B (en) | 2015-12-29 | 2015-12-29 | Driving chip-level system and method for split screen driving |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511008063.2A CN105609045B (en) | 2015-12-29 | 2015-12-29 | Driving chip-level system and method for split screen driving |
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| Publication Number | Publication Date |
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| CN105609045A true CN105609045A (en) | 2016-05-25 |
| CN105609045B CN105609045B (en) | 2019-01-08 |
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| CN201511008063.2A Active CN105609045B (en) | 2015-12-29 | 2015-12-29 | Driving chip-level system and method for split screen driving |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107393460A (en) * | 2017-08-08 | 2017-11-24 | 惠科股份有限公司 | Driving method and driving device of display device |
| CN109859694A (en) * | 2019-03-19 | 2019-06-07 | 京东方科技集团股份有限公司 | Display panel and its drive control method, drive control circuit, display device |
| US11893180B2 (en) | 2020-11-11 | 2024-02-06 | Chengdu Boe Optoelectronics Technology Co., Ltd. | Display device and method for controlling the same |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109509446B (en) * | 2018-12-19 | 2021-06-04 | 惠科股份有限公司 | Display module and display device |
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Cited By (8)
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| US11893180B2 (en) | 2020-11-11 | 2024-02-06 | Chengdu Boe Optoelectronics Technology Co., Ltd. | Display device and method for controlling the same |
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| CN105609045B (en) | 2019-01-08 |
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