CN206431607U - A kind of LCD drive circuit systems - Google Patents
A kind of LCD drive circuit systems Download PDFInfo
- Publication number
- CN206431607U CN206431607U CN201720034151.8U CN201720034151U CN206431607U CN 206431607 U CN206431607 U CN 206431607U CN 201720034151 U CN201720034151 U CN 201720034151U CN 206431607 U CN206431607 U CN 206431607U
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- Prior art keywords
- display screen
- interface
- chip
- master chip
- spi interface
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Abstract
The utility model discloses a kind of LCD drive circuit systems, including master chip and display screen, also include conversion chip, the conversion chip is connected between the master chip and display screen, the master chip is provided with MIPI interfaces and SPI interface, the conversion chip is provided with MIPI interfaces and rgb interface, and the display screen is provided with rgb interface and SPI interface；The signal output part of MIPI interfaces connects the signal input part of MIPI interfaces on conversion chip on the master chip, the signal output part of SPI interface connects the signal input part of rgb interface on the signal output part connection display screen of rgb interface on the signal input part of SPI interface on display screen, the conversion chip on the master chip.The utility model can not only transmit view data and control command to the display screen of I2C interfaces, moreover it is possible to transmit view data and control command to the display screen of SPI interface.
Description
Technical field
The utility model is related to circuit design field, and in particular to a kind of LCD drive circuit systems.
Background technology
Common parallel port display screen, is to transmit data using rgb interface mostly, control command is transmitted by I2C interfaces.But
Only a few display screen uses SPI interface.
The embedded microprocessor (master chip, CPU) of current main-stream is general to use MIPI serial data interfaces, Ke Yichuan
Transmission of data can also transmit control command.
In existing LCD drive circuit systems, in order to use the display screen of rgb interface on the processor of MIPI interfaces,
Generally turn RGB chip using a MIPI.But such chip is usually to be ordered using I2C interfaces to display screen transmission control
Order, it is helpless to the display screen of SPI interface.
Utility model content
Based on this, in view of the above-mentioned problems, being necessary to propose a kind of LCD drive circuit systems, it can not only be to I2C interfaces
Display screen transmits view data and control command, moreover it is possible to transmit view data and control command to the display screen of SPI interface；And its
Connected mode is simple, clear and definite, realizes the transmission respectively of view data and control command.
The technical solution of the utility model is as follows：
A kind of LCD drive circuit systems, including master chip and display screen, in addition to conversion chip, the conversion chip connect
It is connected between the master chip and display screen, the master chip is provided with MIPI interfaces and SPI interface, the conversion chip and set
There are MIPI interfaces and rgb interface, the display screen is provided with rgb interface and SPI interface；The letter of MIPI interfaces on the master chip
The signal output part of SPI interface connects on the signal input part of MIPI interfaces, the master chip on number output end connection conversion chip
Connect on the signal output part connection display screen of rgb interface on the signal input part of SPI interface on display screen, the conversion chip
The signal input part of rgb interface.
By programme-control inside master chip, the control command of display screen is extracted, passes through the SPI interface of master chip
The control command is first sent to display screen, the configuration of display screen internal register is carried out；Then the MIPI interfaces of master chip are passed through again
Data containing view data and control command are sent to conversion chip, the rgb interface output image data of conversion chip show
Display screen would only receive the RGB data of conversion chip transmission, and not receive the control command of conversion chip transmission, display screen institute
The control command of reception is sent by the SPI interface of master chip；Realize and the display screen transmission data of SPI interface and control are ordered
Order.
As the further optimization of such scheme, I2C interfaces are additionally provided with the conversion chip.
For the RGB display screens of I2C interfaces, it is only necessary to send MIPI data to conversion chip by master chip, change core
Piece automatically can separate the view data and control command transmitted on MIPI data wires, and send figure by RGB data line
As data, control command is sent by I2C interfaces.
And for the RGB display screens of SPI interface, MIPI data are sent to conversion chip again by master chip, change core
Piece separates the view data and control command transmitted on MIPI data wires；But, the I2C interface physicals of conversion chip output
On be disconnect, display screen would only receive RGB data, and not receive I2C control command, the control that display screen is received
Order is to be sent directly to display screen by the SPI interface of master chip.
As the further optimization of such scheme, SPI interface on register, the display screen is provided with the display screen
Signal output part connects the signal input part of register.
SPI has three registers, respectively control register SPCR, status register SPSR and data register
SPDR, the control register SPCR mainly used in the utility model；SPI interface on master chip sends control command to aobvious
Display screen, the control command is transferred to register, display screen is first carried out the configuration of register；The transmission of control command is realized,
Register has been configured simultaneously, has facilitated display screen to carry out image real time transfer.
As the further optimization of such scheme, the MIPI interfaces on the master chip connect with the MIPI on conversion chip
Mouth is connected by MIPI data wires, and the rgb interface on rgb interface and display screen on the conversion chip passes through RGB data line
SPI interface control connection on SPI interface and display screen on connection, the master chip.
The data transfer of view data and control command, conversion chip and display screen are realized between master chip and conversion chip
Between only carry out RGB data transmission, the data transfer of order is only controlled between master chip and display screen, the utility model is set
This circuit system is counted, view data and control command is separately transferred to display screen, realizing the display screen of SPI interface can also lead to
Cross conversion chip and master chip and receive view data and control command, it is ensured that circuit it is complete.
As the further optimization of such scheme, program controling module, described program control are additionally provided with the master chip
The signal input part of SPI interface on the signal output part connection master chip of molding block.
By program controling module, the control command of display screen is extracted, and be transferred to by the SPI interface on master chip
Display screen, realizes the transmission of control command.
The beneficial effects of the utility model are：
1st, the transmission that view data and control command are carried out to the display screen of SPI interface is realized；
2nd, for the RGB display screens of I2C interfaces, view data and control command can also be transmitted；
3rd, using register, make to receive the display screen of the SPI interface after control command, first carry out the configuration of register,
Next step is facilitated to carry out the processing of view data；
4th, view data and control command is separately transmitted to display screen, enable to carry out image to the display screen of SPI interface
The transmission of data and control command, while improving data transmission efficiency；
5th, using program controling module, the extraction carried out to control command, and the control is transmitted by the SPI interface of master chip
System order realizes the transmission of control command to display screen.
Brief description of the drawings
Fig. 1 is the theory diagram of LCD drive circuit systems described in the utility model embodiment.
Description of reference numerals：
10- master chips；101- program controling modules；20- display screens；201- registers；30- conversion chips；40-MIPI connects
Mouthful；50-SPI interfaces；60-RGB interfaces；70-I2C interfaces.
Embodiment
Embodiment of the present utility model is described in detail below in conjunction with the accompanying drawings.
Embodiment
As shown in figure 1, a kind of LCD drive circuit systems, including master chip 10 and display screen 20, in addition to conversion chip
30, the conversion chip 30 is connected between the master chip 10 and display screen 20, and the master chip 10 is provided with MIPI interfaces
40 and SPI interface 50, the conversion chip 30 is provided with MIPI interfaces 40 and rgb interface 60, and the display screen 20 is provided with RGB
Interface 60 and SPI interface 50；MIP I connect on the signal output part connection conversion chip 30 of MIPI interfaces 40 on the master chip 10
SPI interface 50 on the signal output part connection display screen 20 of SPI interface 50 on the signal input part of mouth 40, the master chip 10
The signal output part of rgb interface 60 connects the signal of rgb interface 60 on display screen 20 on signal input part, the conversion chip 30
Input.
By programme-control inside master chip 10, the control command of display screen 20 is extracted, passes through master chip 10
SPI interface 50 first sends the control command to display screen 20, carries out the configuration of the internal register 201 of display screen 20；Then lead to again
Data containing view data and control command are sent to conversion chip 30, conversion chip by the MIPI interfaces 40 for crossing master chip 10
The 30 output image data of rgb interface 60, display screen 20 would only receive the RGB data of the transmission of conversion chip 30, and receive not
The control command sent to conversion chip 30, the control command that display screen 20 is received is sent by the SPI interface 50 of master chip 10；
Realize and data and control command are transmitted to the display screen 20 of SPI interface 50.
In one embodiment, I2C interfaces 70 are additionally provided with the conversion chip 30.
For the display screen 20 of SPI interface 50, the I2C interfaces 70 on conversion chip 30 are physically off-state, display
Screen 20 would only receive RGB data, and not receive the control command of the transmission of I2C interfaces 70, the control that display screen 20 is received
Order is to be sent directly to display screen 20 by the SPI interface 50 of master chip 10.
In another embodiment, the display screen 20 is provided with I2C interfaces 70.
For the display screen 20 of I2C interfaces 70, it is only necessary to send MIPI data 40 to conversion chip 30 by master chip 10,
Conversion chip 30 automatically can separate the view data and control command transmitted on MIPI data wires, and pass through RGB data
Line sends view data, and control command is sent by I2C interfaces 70.
The LCD circuit systems of the utility model design, it is realized transmits view data to the display screen 20 of I2C interfaces 70
And control command, view data and control command are transmitted to the display screen 20 of SPI interface 50 while also achieving.
In another embodiment, SPI interface 50 on register 201, the display screen 20 is provided with the display screen 20
Signal output part connect register 201 signal input part.
SPI has three registers 201, respectively control register SPCR, status register SPSR and data register
SPI interface 50 on SPDR, master chip 10 sends control command to display screen 20, and the control command is transferred to register 201, made
Register 201 carries out configuration；The transmission of control command is realized, while the register 201 after configuration is good is also convenient for display screen 20
Carry out image real time transfer.
In another embodiment, the MIPI interfaces 40 on the master chip 10 and the MIPI interfaces 40 on conversion chip 30
Connected by MIPI data wires, the rgb interface 60 on the conversion chip 30 passes through RGB with the rgb interface 60 on display screen 20
Data wire is connected, and the SP PCI interfaces 50 on the master chip 10 are connected with the control of SPI interface 50 on display screen 20.
Realize the data transfer of view data and control command between master chip 10 and conversion chip 30, conversion chip 30 with
RGB data transmission is only carried out between display screen 20, the data transfer of order is only controlled between master chip 10 and display screen 20,
The utility model designs this circuit system, view data and control command is separately transferred to display screen 20, realizes SPI interface
50 display screen 20 can also pass through conversion chip 30 and master chip 10 and receive view data and control command, it is ensured that circuit it is complete
It is whole.
In another embodiment, program controling module 101, described program control module are additionally provided with the master chip 10
The signal input part of SPI interface 50 on 101 signal output part connection master chip 10.
By program controling module 101, the control command of display screen 20 is extracted, and connect by the SPI on master chip 10
Mouth 50 is transferred to display screen 20, configuration register 201；Realize the transmission of control command.
Embodiment described above only expresses embodiment of the present utility model, and it describes more specific and detailed,
But therefore it can not be interpreted as the limitation to the utility model the scope of the claims.It should be pointed out that for the common of this area
For technical staff, without departing from the concept of the premise utility, various modifications and improvements can be made, these all belong to
In protection domain of the present utility model.
Claims (5)
1. a kind of LCD drive circuit systems, including master chip and display screen, it is characterised in that also including conversion chip, described turn
Change chip to be connected between the master chip and display screen, the master chip is provided with MIPI interfaces and SPI interface, the conversion
Chip is provided with MIPI interfaces and rgb interface, and the display screen is provided with rgb interface and SPI interface；MIPI on the master chip
The signal output part of interface connects the signal of SPI interface on the signal input part of MIPI interfaces on conversion chip, the master chip
The signal output part connection of rgb interface is aobvious on the signal input part of SPI interface, the conversion chip on output end connection display screen
The signal input part of rgb interface in display screen.
2. LCD drive circuit systems according to claim 1, it is characterised in that be additionally provided with I2C on the conversion chip and connect
Mouthful.
3. LCD drive circuit systems according to claim 1, it is characterised in that register, institute are provided with the display screen
The signal output part for stating SPI interface on display screen connects the signal input part of register.
4. LCD drive circuit systems according to claim 1, it is characterised in that MIPI interfaces on the master chip with
MIPI interfaces on conversion chip are connected by MIPI data wires, the RGB on rgb interface and display screen on the conversion chip
Interface is connected by RGB data line, the SPI interface control connection on the SPI interface and display screen on the master chip.
5. LCD drive circuit systems according to claim 1, it is characterised in that program control is additionally provided with the master chip
The signal input part of SPI interface on molding block, the signal output part connection master chip of described program control module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720034151.8U CN206431607U (en) | 2017-01-11 | 2017-01-11 | A kind of LCD drive circuit systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720034151.8U CN206431607U (en) | 2017-01-11 | 2017-01-11 | A kind of LCD drive circuit systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206431607U true CN206431607U (en) | 2017-08-22 |
Family
ID=59582233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720034151.8U Expired - Fee Related CN206431607U (en) | 2017-01-11 | 2017-01-11 | A kind of LCD drive circuit systems |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206431607U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107844443A (en) * | 2017-10-20 | 2018-03-27 | Tcl通讯（宁波）有限公司 | Interface conversion method, intelligent watch and storage medium based on MT2503 |
| CN109754740A (en) * | 2017-11-01 | 2019-05-14 | 三星显示有限公司 | Display-driver Ics, display system and the method for driving the integrated circuit |
| CN114387922A (en) * | 2022-02-24 | 2022-04-22 | 硅谷数模(苏州)半导体有限公司 | Driving chip |
-
2017
- 2017-01-11 CN CN201720034151.8U patent/CN206431607U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107844443A (en) * | 2017-10-20 | 2018-03-27 | Tcl通讯（宁波）有限公司 | Interface conversion method, intelligent watch and storage medium based on MT2503 |
| CN109754740A (en) * | 2017-11-01 | 2019-05-14 | 三星显示有限公司 | Display-driver Ics, display system and the method for driving the integrated circuit |
| CN109754740B (en) * | 2017-11-01 | 2024-02-09 | 三星显示有限公司 | Display driver integrated circuit, display system and method of driving the same |
| CN114387922A (en) * | 2022-02-24 | 2022-04-22 | 硅谷数模(苏州)半导体有限公司 | Driving chip |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170822 Termination date: 20200111 |