CN204577068U - A kind of liquid crystal display systems - Google Patents
A kind of liquid crystal display systems Download PDFInfo
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- CN204577068U CN204577068U CN201520303508.9U CN201520303508U CN204577068U CN 204577068 U CN204577068 U CN 204577068U CN 201520303508 U CN201520303508 U CN 201520303508U CN 204577068 U CN204577068 U CN 204577068U
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Abstract
The utility model discloses a kind of liquid crystal display systems, the drived control chip that described liquid crystal display systems comprises LCDs, is electrically connected with LCDs, described liquid crystal display systems also comprises singlechip chip, for connecting several external communication interface and the flash storage of external unit, described singlechip chip is connected with described drived control chip, and described singlechip chip is connected with flash storage; Described singlechip chip has connecting interface, and described singlechip chip is connected with described several external communication interface by connecting interface.Liquid crystal display systems of the present utility model is applicable to most of different external unit, and the same communication protocol of these external units can be made to control LCDs, compatible good, can meet development requirement and the user demand of different electronic product.
Description
Technical field
The utility model relates to a kind of liquid crystal display systems, more particularly, relates to a kind of liquid crystal display systems with several external communication interface.
Background technology
Along with the development of electronics techniques, tft liquid crystal display device is widely used, and especially middle-size and small-size tft liquid crystal display device has become the main flow of exploitation.Tft liquid crystal display device comprises thin film transistor liquid crystal display screen and carries the drive circuit board of drived control chip.The communication information by its driving circuit plate interface and external device communication, then is converted into display information displaying on this device display screen by drived control chip by tft liquid crystal display device.The driving circuit plate interface of existing film crystal tube display apparatus is due to the difference of drived control chip, cause driving circuit plate interface different, such as: have serial type Peripheral Interface (SPI interface), twin wire serial type bus interface (I2C interface), asynchronous receiving-transmitting transmission interface UART, Intel 8080 interface, rgb interface etc., and the communication protocol of different driving control chip is also incomplete same.
Existing most of tft liquid crystal display device, only carries a kind of drived control chip and uses specific a kind of interface and respective communication agreement and external device communication.Because this tft liquid crystal display device can only use fixing a kind of hardware interface and respective communication agreement and external device communication, can cause when electronic product is connected to tft liquid crystal display device, need adopt specific hardware interface and develop different communication protocol.This tft liquid crystal display device, cannot meet development requirement and the user demand of different electronic product, poor compatibility, reduces the whole efficiency of research and development and use electronic product.
CN202917149 discloses a kind of LCD MODULE, comprise LCD driving governor, liquid crystal display, LED backlight and LCD driving chip, it also comprises a singlechip chip controller, described singlechip chip controller is electrically connected on LCD driving governor by I/O port, and described singlechip chip is provided with synchronous serial interface and EEPROM (Electrically Erasable Programmable Read Only Memo).This singlechip chip controller can realize RS232 by inner USART module, I2C, SPI multi-interface communication, but, need the software revising this singlechip chip controller to realize RS232 to configure USART module when the external unit for distinct interface, I2C, one in SPI interface, and this LCD MODULE only discloses employing RS232, I2C, SPI multiplex roles, and unexposed employing USB interface, the transmission of great amount of images data and widely used USB external unit cannot be adapted to, compatibility is not strong, be difficult to development requirement and the user demand of satisfied different electronic product..
Utility model content
The utility model is the poor compatibility solving liquid crystal display systems of the prior art, is difficult to the satisfied development requirement of different electronic product and the technical matters of user demand.
Inventor of the present utility model finds through practice, can by arranging singlechip chip and the several external communication interface for connecting external unit, then exploitation can be applicable to the general communication protocol software of these external communication interface, can realize controlling different thin film transistor liquid crystal display screen curtains, adapt to different external connection apparatus.Further, inventor studies discovery, and general communication protocol software adopts the communication protocol that can receive AT instruction, can control different thin film transistor liquid crystal display screen curtains preferably, and write AT command set further.Meanwhile, inventor arranges flash storage further, stores the data of displaying contents, as long as external unit sends the order of AT instruction sending action, does not need the data sending displaying contents, greatly reduces the data volume that external unit needs to transmit.Thus solve in prior art the tft liquid crystal display device with different driving control chip and need different hardware interfaces and soft communication agreement to carry out the technical matters of display and control, compatible strong, development requirement and the user demand of different electronic product can be adapted to.
Accordingly, the utility model provides a kind of liquid crystal display systems, the drived control chip that described liquid crystal display systems comprises LCDs, is electrically connected with LCDs, it is characterized in that, described liquid crystal display systems also comprises singlechip chip, for connecting several external communication interface and the flash storage of external unit, described singlechip chip is connected with described drived control chip, and described singlechip chip is connected with flash storage; Described singlechip chip has connecting interface, and described singlechip chip is connected with described several external communication interface by connecting interface.
Preferably, in liquid crystal display systems, described singlechip chip is communicated with or several external unit being connected to or several external communication interface by communication protocol software, and described communication protocol software is the communication protocol software of the AT instruction that can receive in AT command set.
Preferably, in liquid crystal display systems, described drived control chip is connected by FSMC interface with described singlechip chip.
Preferably, in liquid crystal display systems, described several external communication interface is selected from one or more in SPI interface, I2C interface, UART interface, USB interface.
Preferably, in liquid crystal display systems, described liquid crystal display systems is tft liquid crystal display system, and described LCDs is thin film transistor liquid crystal display screen.
Liquid crystal display systems of the present utility model is by arranging singlechip chip and the several external communication interface for connecting external unit, external unit is connected to external communication interface, described external unit, by sending the instruction in AT command set, carries out data communication with described singlechip chip.Described singlechip chip receives AT instruction, resolve instruction, signal transmission is carried out again with described drived control chip, and by drived control chip, the signal that described singlechip chip transmits is converted into display information, and described display information is passed to LCDs, last described LCDs completes the display of display information.Further, by flash storage, the data of displaying contents are stored, as long as external unit sends the order of AT instruction sending action, do not need the data sending displaying contents, greatly reduce the data volume that external unit needs to transmit, thus reduce the communication difficulty of external unit.This liquid crystal display systems is applicable to most of different external unit, the same communication protocol of most of different equipment can be made to control tft liquid crystal, and described singlechip chip from different drived control chip communications, thus can go for different LCDs.The different electronic product of the convenient connection of this liquid crystal display systems uses, and LCDs easy to use carries out electronic product exploitation, and reduce development difficulty, improve development efficiency, compatibility is better.
Accompanying drawing explanation
Accompanying drawing is used to provide further understanding of the present utility model, and forms a part for instructions, is used from explanation the utility model, but does not form restriction of the present utility model with embodiment one below.
Fig. 1 is the structural representation of liquid crystal display systems of the present utility model.
Fig. 2 is the structural representation of the liquid crystal display systems of the utility model embodiment 1.
Fig. 3 is the process flow diagram of the display packing of liquid crystal display systems of the present utility model.
Fig. 4 is the process flow diagram that the software program of the singlechip chip of the utility model embodiment 1 performs.
Embodiment
Be described below in detail embodiment of the present utility model, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the utility model, and can not being interpreted as restriction of the present utility model.On the contrary, embodiment of the present utility model comprise fall into attached claims spirit and intension within the scope of all changes, amendment and equivalent.In the utility model, connection also can be able to be mechanical connection for electrical connection.
Invention of the present utility model artificially solves in prior art the liquid crystal display with different driving control chip, especially tft liquid crystal display device needs different hardware interfaces and soft communication agreement to carry out the technical matters of display and control, by long-term research, a kind of liquid crystal display systems and display packing thereof are proposed, can conventional hardware interface be supported and use same communication protocol software can realize controlling different LCDs, convenient development requirement and the user demand adapting to different electronic product.
As shown in Figure 1, the utility model provides a kind of liquid crystal display systems, comprise LCDs 1, drived control chip 2, singlechip chip 3, for connecting several external communication interface 4 of external unit and the flash storage for the data that store displaying contents.
In the utility model, described LCDs 1 is connected with described drived control chip 2, and described singlechip chip 3 is connected with described drived control chip 2; Described singlechip chip 3 is electrically connected with described several external communication interface 4 by connecting interface.
Wherein, described external communication interface 4 act as the physical connection provided with external device communication.Described singlechip chip 3 act as and receives by described external communication interface 4 the AT instruction that external unit sends, and carries out data communication with described drived control chip 2.Described drived control chip 2 act as and the signal of described singlechip chip 3 is converted into display information, and transmits display information to described LCDs 1.Described LCDs 1 act as display information to this display screen.
In the utility model, described singlechip chip 3 is connected with described flash storage 5, the Main Function of described flash storage 5 is the data storing displaying contents, comprises the data of the data of preset display font, display image, greatly reduces the data volume that external unit needs to transmit.Specifically, the setting of flash storage 5 adds storage space, the data of a large amount of information that Shows Picture, displaying contents such as display Word message and font information etc. can be stored, make up the shortcoming that singlechip chip storage space is little, and, when there being great amount of images data to transmit, flash storage can as data buffer area.In the utility model, by arranging flash storage, as long as external unit sends the order of AT instruction sending action, do not need to send view data.Such as AT instruction " AT+dB " represents at certain position display of display screen bitmap, and bitmap itself is stored in flash storage, can communicate with flash storage after instruction that singlechip chip receives " AT+dB+ position " and search out data bitmap, display on a display screen.In this way, send message bit pattern again without the need to external unit, greatly save data transmission period.Described singlechip chip 3 also act as and carries out data communication with flash storage 5, to access displaying contents to flash storage 5.
In the utility model, described liquid crystal display systems goes for existing various liquid crystal indicator, and preferably, described liquid crystal display systems is tft liquid crystal display system.Accordingly, described LCDs 1 can be LCDs 1 common on market, in the utility model, is preferably thin film transistor liquid crystal display screen 1.
In the utility model, preferably, described drived control chip 2 and the conventional connecting interface of described singlechip chip have Intel 8086 interface (8086 processor bus interface of Intel early development), rgb interface (video interface that point three primary colors input) and SPI serial line interface (Serial PeripheralInterface, serial type Peripheral Interface, it is a kind of high speed, full duplex, synchronous serial communication bus).Described drived control chip is connected by a kind of interface in Intel 8086 interface, rgb interface and SPI interface with described singlechip chip; Preferably, described drived control chip 2 is connected by FSMC interface (Flexible Static Memory Controller, variable static store control unit interface) with described singlechip chip.FSMC interface is the special connecting interface of the one being applicable to intel8086 interface of STM32F series monolithic chip, its operating mechanism is a register address of singlechip chip inside by intel8086 interface mappings, its advantage is can by the Simultaneous Transmission of Data of multiple I/O interface, faster than the transmission speed of common I/O interface, expend the time that processor is few.
Described singlechip chip 3 is electrically connected with described flash storage 5 by SPI interface (Serial Peripheral Interface, serial type Peripheral Interface are a kind of high speeds, full duplex, synchronous serial communication bus).It will be appreciated by those skilled in the art that and can select according to the type of flash storage chip the interface that adapts, the advantage adopting SPI interface is that connecting line is few.
In the utility model, described several external communication interface 4 can be selected from SPI interface (SerialPeripheral Interface, serial type Peripheral Interface, it is a kind of high speed, full duplex, synchronous serial communication bus), I2C interface (Inter-Integrated Circui, twin wire serial type bus interface, the twin wire universal serial bus developed by PHILIPS company), UART interface (Universal AsynchronousReceiver/Transmitter universal asynchronous receiving-transmitting transmitter interface), one or more in USB interface (Universal SerialBus USB (universal serial bus)).As required, described several external communication interface 4 can be a kind of, two kinds or more kinds of combinations wherein, such as, can arrange three external communication interface 4, comprises a USB interface, a UART interface and a SPI interface respectively.But preferably, arrange the external communication interface 4 of four or more, comprise a SPI interface, I2C interface, a UART interface and a USB interface respectively, meet the connection requirement of more external units, compatibility is better.Certainly, described several external communication interface 4 can also be other interface shape as required, and in a word, conventional interface all can be contained in the utility model.
In the utility model, software program is provided with in described singlechip chip 3, during system works, after described singlechip chip 3 initialization LCDs 1, continuous monitoring external communication interface 4 data, if the AT instruction receiving external unit transmission, can resolve instruction character string and search corresponding instruction execution subroutine, perform described instruction repertorie, can continue after completing instruction to monitor the data in external communication interface 4.
In the utility model, described singlechip chip 3 is communicated with or several external unit being connected to or several external communication interface 4 by communication protocol software, and described communication protocol software is the communication protocol software of the AT instruction that can receive in AT command set.Described AT command set is described singlechip chip 3 and the communication protocol commands set needing during external device communication to follow.In the present embodiment, communication protocol software is included in the software program of singlechip chip 3, and external unit only needs the instruction sending AT command set, and AT command set is character string instruction set, and advantage is that instruction is unified, simply, easy-to-use, and is not easy to make mistakes.External unit only needs to transmit this character Command, has nothing to do with concrete transmission interface and equipment, compatible strong.Described AT command set is write by inventor, described AT command set, comprises to issue orders, and every bar order is character string:
AT+SD: input equipment title, and tft liquid crystal shields according to title initialization;
AT+II: the current described tft liquid crystal screen of initialization;
AT+GX: return current described tft liquid crystal screen viewing area X-axis length;
AT+GY: return current described tft liquid crystal screen viewing area Y-axis length;
AT+DO: open described tft liquid crystal screen backlight;
AT+DF: close described tft liquid crystal screen backlight;
AT+SC: contrast is set;
AT+SB: adjust the brightness of described tft liquid crystal screen;
AT+SP: the described tft liquid crystal screen viewing area page number is selected;
AT+WP: described tft liquid crystal screen viewing area page operations;
AT+cs: described tft liquid crystal screen cls operation;
AT+fs: described tft liquid crystal shields a kind of color of full frame filling;
AT+sf: foreground is set;
AT+gf: obtain foreground;
AT+sb: background colour is set;
AT+gb: background extraction look;
AT+dp: draw point operation;
AT+dl: setting-out operates;
AT+dr: draw hollow rectangle operation;
AT+dc: draw open circles operation;
AT+dR: draw the operation of hollow round rectangle;
AT+fr: draw and fill rectangular operation;
AT+fc: draw and fill circle operation;
AT+fR: draw and fill round rectangle;
AT+ps: display string operates;
AT+pi: display integer digit manipulation;
AT+pf: display floating point number operation;
AT+sF: set font operation;
AT+gF: obtain font operation;
AT+gX: obtain font X-axis size;
AT+gY: obtain font Y-axis size;
AT+dB: draw bitmap operation;
AT+DT: data transfer operation;
AT+ED: DTD operates;
AT+FW:Flash write operation;
AT+gt: obtain touch key-press rreturn value.
As shown in Figure 3, the utility model additionally provides the display packing of above-mentioned liquid crystal display systems, and described display packing comprises the steps:
Step S1, one or several external unit are connected to one or several external communication interface 4, and initialization LCDs 1;
Step S2, described singlechip chip 3 are electrically connected with described external communication interface 4, and wait-receiving mode external unit sends the instruction in AT command set;
Step S3, described singlechip chip 3 receive the AT instruction that external unit sends, then resolve described AT instruction, if do not receive the AT instruction of external unit transmission, return step S2;
Step S4, described singlechip chip 3 perform described reception and AT instruction after resolving, and carry out signal transmission with drived control chip 2, described singlechip chip 3 then returns step S2 after executing described AT instruction;
The signal that described singlechip chip 3 transmits is converted into display information by step S5, described drived control chip 2, and described display information is passed to LCDs 1;
Step S6, described LCDs 1 complete the display of display information.
In the utility model, preferably, in step s 4 which, described singlechip chip 3 is according to receiving and AT instruction after resolving, not only can carry out signal transmission with described drived control chip 2, data access operation can also be carried out, by data temporary storage in flash storage 5 with flash storage 5.
In sum, external unit being connected to external communication interface 4, by sending the instruction in AT command set, carrying out data communication with described singlechip chip 3.Described singlechip chip 3 receives AT instruction, resolve instruction, signal transmission is carried out again with described drived control chip 2, and by drived control chip 2, the signal that described singlechip chip 3 transmits is converted into display information, and described display information is passed to LCDs 1, last described LCDs 1 completes the display of display information.
Describe the utility model in detail below in conjunction with embodiment, but therefore do not limit the utility model.
First embodiment of the present utility model provides a kind of tft liquid crystal display system.As shown in Figure 2, described tft liquid crystal display system comprises thin film transistor liquid crystal display screen 11, drived control chip 2HX8352A 21, singlechip chip 3STM32F103VE 31, flash storage 5SST25VF064CS3AE 51, I2C interface 41, SPI interface 42, UART interface 43, USB interface 44.Described thin film transistor 11 adopts 3.2 cun of liquid crystal displays, realizes controlling by drived control chip 2HX8352A 21.Described singlechip chip 3STM32F103VE 31 is connected with described drived control chip 2HX8352A 21 by FSMC interface.Described singlechip chip 3STM32F103VE 31 is connected with flash storage 5SST25VF064CS3AE 51 by SPI interface.Described singlechip chip 3STM32F103VE 31 is by I2C interface 41, SPI interface 42, UART interface 43, USB interface 44 and external device communication.Include software program in singlechip chip 3STM32F103VE31, program execution flow is as Fig. 4.During system works, after described singlechip chip 3STM32F103VE.31 initialization thin film transistor liquid crystal display screen 11, continuous monitoring external communication interface data, if receive the AT instruction that external unit sends, instruction character string can be resolved and search corresponding instruction execution subroutine, perform described instruction repertorie, can continue after completing instruction to monitor the data on external interface.Perform at described singlechip chip in the process of described instruction repertorie, carry out signal transmission with drived control chip, the signal that described singlechip chip transmits is converted into display information by described drived control chip, and described display information is passed to LCDs; Finally, described LCDs completes the display of display information.
As mentioned above, liquid crystal display systems of the present utility model is by arranging singlechip chip and the several external communication interface for connecting external unit, external unit is connected to external communication interface, send the instruction in AT command set by external unit, carry out data communication with described singlechip chip.Described singlechip chip receives AT instruction, resolve instruction, signal transmission is carried out again with described drived control chip, and by drived control chip, the signal that described singlechip chip transmits is converted into display information, and described display information is passed to LCDs, last described LCDs completes the display of display information.This liquid crystal display systems is applicable to most of different external unit, the same communication protocol of most of different equipment can be made to control tft liquid crystal, and described singlechip chip from different drived control chip communications, thus can go for different LCDs.The different electronic product of the convenient connection of this liquid crystal display systems uses, and LCDs easy to use carries out electronic product exploitation, and reduce development difficulty, improve development efficiency, compatibility is better.In addition, add flash storage, the data of the displaying contents such as pictorial information data, font information data of the display that can be used for prestoring, decrease the data volume that external unit imports into, reduce the communication difficulty of external unit.
More than describe preferred implementation of the present utility model in detail; but; the utility model is not limited to the detail in above-mentioned embodiment; within the scope of technical conceive of the present utility model; can carry out multiple simple variant to the technical solution of the utility model, these simple variant all belong to protection domain of the present utility model.
It should be noted that in addition, each concrete technical characteristic described in above-mentioned embodiment, in reconcilable situation, can be combined by any suitable mode, in order to avoid unnecessary repetition, the utility model illustrates no longer separately to various possible array mode.
In addition, also can carry out combination in any between various different embodiment of the present utility model, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.
Claims (7)
1. a liquid crystal display systems, the drived control chip that described liquid crystal display systems comprises LCDs, is electrically connected with LCDs, it is characterized in that, described liquid crystal display systems also comprises singlechip chip, for connecting several external communication interface and the flash storage of external unit, described singlechip chip is connected with described drived control chip, and described singlechip chip is connected with flash storage; Described singlechip chip has connecting interface, and described singlechip chip is connected with described several external communication interface by connecting interface.
2. liquid crystal display systems according to claim 1, it is characterized in that, described singlechip chip is communicated with or several external unit being connected to or several external communication interface by communication protocol software, and described communication protocol software is the communication protocol software of the AT instruction that can receive in AT command set.
3. liquid crystal display systems according to claim 1 and 2, is characterized in that, described drived control chip is connected by a kind of interface in Intel 8086 interface, rgb interface and SPI interface with described singlechip chip.
4. liquid crystal display systems according to claim 3, is characterized in that, described drived control chip is connected by FSMC interface with described singlechip chip.
5. liquid crystal display systems according to claim 1 and 2, is characterized in that, described several external communication interface is selected from one or more in SPI interface, I2C interface, UART interface, USB interface.
6. liquid crystal display systems according to claim 1, is characterized in that, described singlechip chip is connected with described flash storage by SPI interface.
7. liquid crystal display systems according to claim 1 and 2, is characterized in that, described liquid crystal display systems is tft liquid crystal display system, and described LCDs is thin film transistor liquid crystal display screen.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104766589A (en) * | 2015-05-09 | 2015-07-08 | 深圳酷宅科技有限公司 | Liquid crystal display system and display method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104766589A (en) * | 2015-05-09 | 2015-07-08 | 深圳酷宅科技有限公司 | Liquid crystal display system and display method thereof |
| CN104766589B (en) * | 2015-05-09 | 2017-06-06 | 深圳酷宅科技有限公司 | Liquid crystal display systems and its display methods |
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