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CN106057165B - For the control device and control method of liquid crystal display device - Google Patents

For the control device and control method of liquid crystal display device Download PDF

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Publication number
CN106057165B
CN106057165B CN201610661885.9A CN201610661885A CN106057165B CN 106057165 B CN106057165 B CN 106057165B CN 201610661885 A CN201610661885 A CN 201610661885A CN 106057165 B CN106057165 B CN 106057165B
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address
storage device
signal
data
storage
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CN106057165A (en
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双强
刘胜利
吴春芸
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InfoVision Optoelectronics Kunshan Co Ltd
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InfoVision Optoelectronics Kunshan Co Ltd
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    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control 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
    • G09G3/34Control 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 by control of light from an independent source
    • G09G3/36Control 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 by control of light from an independent source using liquid crystals

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Liquid Crystal Display Device Control (AREA)

Abstract

The invention discloses a kind of control device and control method for liquid crystal display device, the control device includes:Sequence controller, for providing clock signal;And storage device, including multiple storage regions, for storing the scanning encoding data of different scanning pattern respectively, wherein, the sequence controller sends to the storage device and reads instruction, the scanning encoding data so as to read the scanning encoding data of different scanning pattern according to the address of storage region, and are sent to sequence controller by the storage device according to the address for reading instruction and selection signal acquisition storage region;The present invention is only with a storage device, the storage device is divided into multiple storage regions, the address of storage region is generated according to selection signal, so as to read the scanning encoding data of different scanning pattern, thus can reduce circuit board size, avoid storage device excessively caused product cost and reduce product cost and improve show quality.

Description

For the control device and control method of liquid crystal display device
Technical field
The invention belongs to display technology field, more particularly, to the control device for liquid crystal display device and control Method processed.
Background technology
Electrically Erasable Programmable Read-Only Memory chip (Electrically Erasable Programmable Read- Only Memory, EEPROM) as electricity erasable memorizer have the characteristics that can repeatedly erasable and power down do not fall data, very much Hardware is required for EEPROM to store some crucial hardware datas or configuration information.
It is used as remembering in the presence of the nonvolatile memory (being hereafter reduced to " memory ") by ROM or EEPROM expressions It employs in the data of the operation of timing controller (TCON), the display device that carry on the driving substrate for being set in display device The example of the device of production history etc..
The phenomenon that liquid crystal display device is and is changed under the work of electric field using the orientation of liquid crystal molecule changes light The display device of source light transmittance.Liquid crystal display device has been widely used for the mobile terminal and such as tablet electricity of such as mobile phone Depending on large scale display panel in.
Fig. 1 shows the equivalent circuit diagram of liquid crystal display device according to prior art.Liquid crystal display device includes the first glass Glass substrate and the second glass substrate, the first surface of the first glass substrate are opposite with the first surface of the second glass substrate. It is formed on the first surface of one glass substrate and a plurality of controlling grid scan line intersected with each other and a plurality of source data line is set, in the two Crossover location setting selection thin film transistor (TFT) and pixel electrode.Public electrode is formed in the first surface of the second glass substrate. Comprising liquid crystal layer between pixel electrode and public electrode, pixel capacitance Clc can be equivalent to.In order to the update cycle of pixel it Between keep voltage, pixel capacitance Clc can parallel connection storage capacitance Cs to obtain the longer retention time.
Gate drivers 310 are connected to a plurality of controlling grid scan line, for providing grid voltage G1 to Gm.Source electrode driver 410 are connected to a plurality of source data line, for providing gray scale voltage S1 to Sn.Sequence controller 110 respectively with gate drivers 310 are connected with source electrode driver 410, so as to provide various clock signals to gate drivers 310 and source electrode driver 410.
In the driving method of above-mentioned liquid crystal display device, in each frame period, in the control of sequence controller 110 Under scan a plurality of controlling grid scan line successively.Thin film transistor (TFT) is gated via controlling grid scan line and will be with via source data line The corresponding voltage of grayscale applies to pixel capacitance Clc, so as to change the orientation of liquid crystal molecule to realize the brightness of corresponding grayscale.
Fig. 2 shows the schematic frames for being used to generate the control device of sequential in liquid crystal display device according to prior art Figure.Sequence controller 110 reads scanning encoding data from storage device 121 and storage device 122, so as to change as needed Become scan mode, such as the switching of positive counter-scanning.The liquid crystal display device of the prior art stores difference and sweeps in a plurality of storage devices The scanning encoding data of mode are retouched, and using between 130 switching sequence controller 110 of switch unit and multiple storage devices Connection.In turntable driving, sequence controller 110 reads scanning from corresponding storage device and compiles according to the scan mode specified Code data.
However, the storage device in above-mentioned control device is excessive, excessive printed circuit board (Printed can be occupied Circuit Board, PCB) area, carrys out many difficulties to wiring tape;And storage device can excessively increase product cost, reduce The competitive advantage of product.
Invention content
The purpose of the present invention is to provide a kind of control devices and control method for liquid crystal display device.
According to an aspect of the present invention, a kind of control device for liquid crystal display device is provided, including:
Sequence controller, for providing clock signal;
And storage device, including multiple storage regions, for storing the scanning encoding data of different scanning pattern respectively;
Wherein, the sequence controller sends to the storage device and reads instruction, and the storage device is according to the reading Instruction fetch and selection signal obtain the address of storage region, so as to read different scanning mould according to the address of the storage region The scanning encoding data of formula, and the scanning encoding data are sent to the sequence controller.
Preferably, the storage device generates first choice signal according to address signal, and the storage device further includes more A selection end, the multiple selection end receive multiple second selection signals respectively;According to the first choice signal and described Two selection signals generate the selection signal.
Preferably, the storage device further includes:
Multiple address ends, the multiple address end connect into corresponding with the numerical value of the high significance bit of preset address;
Clock end, for receiving clock signal;
Data terminal, for receiving data and described address signal;
Control module, for obtaining the address of the storage region according to the reading instruction and the selection signal, The scanning encoding data of different scanning pattern are read according to the address of the storage region.
Preferably, in the scanning encoding data for reading different scanning pattern, the multiple second selection signal Level is corresponding with the address offset amount of the multiple storage region.
Preferably, the control module includes:Control unit is connect with the clock end and the data terminal, for connecing Receive the clock signal, the data and described address signal;Byte address register, for storing described address signal and pre- If byte;Data register, for data to be read different scanning pattern according to the preset byte according to described address signal Scanning encoding data;Address decoder is connect with described control unit, for generating the second selection according to described address signal Signal;Address selection unit, for generating selection signal according to first choice signal and the second selection signal;
Wherein, described control unit is additionally operable to obtain the address of storage region according to the selection signal, and according to described Read the scanning encoding data of different scanning pattern in the address of storage region.
Preferably, at least one of the multiple address end address end ground connection or high level, so as to remain numerical value 0 or Numerical value 1.
Preferably, the scanning encoding data for just swept selected from 6 coded data, 6 it is counter sweep coded data, 8 just sweeping Coded data and 8 anti-one kind swept in coded data.
Preferably, the storage device is Electrically Erasable Programmable Read-Only Memory, and the sequential is connected to via I2C buses Controller.
According to another aspect of the present invention, a kind of control method for liquid crystal display device is provided, including:
It is sent to storage device and reads instruction;The storage device includes multiple storage regions, the multiple storage region The scanning encoding data of different scanning pattern are stored respectively;
The storage device obtains the address of storage region according to selection signal;
The storage device reads the scanning encoding data of different scanning pattern according to the address of the storage region.
Preferably, the storage device generates first choice signal according to address signal;The storage device further includes more A selection end, the multiple selection end receive multiple second selection signals respectively;According to the first choice signal and described Two selection signals generate the selection signal;
And the storage device further includes multiple address ends, the multiple address end connects into the high significance bit of preset address Numerical value it is corresponding.
According to the control device of this embodiment of the invention only with a storage device, which is divided into more A storage region generates the address of storage region according to selection signal, so as to read the scanning encoding data of different scanning pattern. Due to only with a storage device, can reduce circuit board size, avoid storage device excessively caused product into Originally it reduces product cost and improves and show quality.
Description of the drawings
By referring to the drawings to the description of the embodiment of the present invention, above-mentioned and other purposes of the invention, feature and Advantage will be apparent from, in the accompanying drawings:
Fig. 1 shows the equivalent circuit diagram of liquid crystal display device according to prior art;
Fig. 2 shows the schematic frames for being used to generate the control device of sequential in liquid crystal display device according to prior art Figure;
Fig. 3 shows to be used to generate the schematic frame of the control device of sequential in the liquid crystal display device of the embodiment of the present invention Figure;
Fig. 4 shows the schematic block diagram of storage device in the liquid crystal display device of the embodiment of the present invention;
Fig. 5 shows to be used to generate the flow chart of the control method of sequential in the liquid crystal display device of the embodiment of the present invention.
Specific embodiment
Hereinafter reference will be made to the drawings is more fully described various embodiments of the present invention.In various figures, identical element It is represented using same or similar reference numeral.For the sake of clarity, the various pieces in attached drawing are not necessarily to scale.
The present invention can be presented in a variety of manners, some of them example explained below.
Fig. 3, which is shown, is used for the signal for generating the control device of sequential in liquid crystal display device according to embodiments of the present invention Property block diagram;Fig. 4 shows the schematic block diagram of storage device in the liquid crystal display device of the embodiment of the present invention.
As shown in Figure 3 and Figure 4:
The control device is for example in liquid crystal display device shown in FIG. 1, for gate drivers and source drive Device provides various clock signals.
The control device includes sequence controller 110 and storage device 120, and storage device 120 for example can be that electricity can Erasable programmable read-only memory (Electrically Erasable Programmable Read-Only Memory, EEPROM).Storage device 120 includes four storage regions 121 to 124, and storage region 121 to 124 stores different scanning respectively The scanning encoding data of pattern, for example, 6 just sweeping coded data, 6 counter sweep that coded data, 8 just to sweep coded data and 8 anti- Sweep coded data.
Specifically, the capacity of storage device 120 is, for example, 16K memory spaces, is addressed using 14 bit address.16K is stored Space is divided into four storage regions, and the address range of the first storage region to the 4th storage region is followed successively by 0-511,512- 1023,1024-1535,1536-2047 (are represented) using 10 systems, i.e., store sweeping for different length and/or coding mode respectively Retouch coded data, for example, 6 just sweeping coded data, 6 it is counter sweep coded data, 8 just sweeping coded data and 8 counter are swept coding Data.
There are three address end A0 to A2 and clock end SCL and data terminal SDA for the tool of storage device 120.Work as storage device When 120 three addresses end A0 to A2 is grounded respectively so that the address of storage device 120 is two that high significance bit is 000 beginning System address.When two addresses end A0 and A2 of EEPROM storage 120 are grounded respectively, address end A1 connects high level When so that the address of storage device 120 is the binary address that high significance bit is 010 beginning.When two ground of storage device 120 Location end A0 and A1 are grounded respectively, when address end A2 connects high level so that the address of storage device 120 is that high significance bit is 001 binary address started.When the address end A0 of storage device 120 is grounded, two addresses end A1 and A2 connect height respectively During level so that the address of storage device 120 is the binary address that high significance bit is 011 beginning.
Storage device 120 has 2 selections end B1 and B2, and end B1 and B2 are selected at two, receives 2 second selection letters Number.Two binary numerals that selects end B1 and B2 and can generate are 00,01,10 and one of 11.
Storage device 120 further includes control module 125 and generates address according to the binary numeral that the second selection signal generates Offset, so as to which the second selection signal to be mapped to the different storage zone of storage device 120.Such as in the second selection signal When binary numeral is respectively 00,01,10 and 11, address offset amount is respectively 0,512,1024 and 1536.
In the present embodiment, control module 125 includes control unit 1251, byte address memory 1252, address decoding Device 1253, address selection unit 1254 and data register 1255.Wherein, control unit 1251 and clock end SCL and data terminal SDA connections, for receive clock signal and data with and address signal.Byte address register 1252 is used for storage address signal And preset byte.Address decoder 1253 is used for the address signal for receiving control unit 1251 and generates first choice signal.Ground Location selecting unit 1254 is used to generate selection signal according to first choice signal and the second selection signal.Wherein, control unit 1251 are additionally operable to obtain the address of storage region according to selection signal, and are written or read difference according to the address of storage region The scanning encoding data of scan pattern.Data register 1255 be used for according to address signal by data according to preset byte be written or Person reads the scanning encoding data of different scanning pattern.
When data terminal SDA transmission address signal high-order effective address it is consistent with the connection mode at address end A0-A2 ends, The EEPROM is chosen to be read out or read, at this point, when the address that address decoder 1253 decodes is 0, and select When to hold the address offset amount that B1 and B2 are generated be 0, then by the first storage region of scanning encoding digital independent 121, and from representing 0 Byte starts to read;If the address offset amount of end B1 and B2 generation is selected to be 512, scanning encoding digital independent second is deposited Storage area domain 122, and read since being represented 0 byte;It, will if the address offset amount of end B1 and B2 generation is selected to be 1024 Scanning encoding digital independent third storage region 123, and read since being represented 0 byte;If select what end B1 and B2 were generated When address offset amount is 1536, then by the 4th storage region 124 of scanning encoding digital independent, and read since being represented 0 byte It takes.
When the address that address decoder 1253 decodes is 2, and the address offset amount that end B1 and B2 is selected to generate is 0 When, then by the first storage region of scanning encoding digital independent 121, and read since being represented 2 byte;If select end B1 and B2 When the address offset amount of generation is 512, then by the second storage region of scanning encoding digital independent 122, and opened from the byte for representing 2 Begin to read;If the address offset amount of end B1 and B2 generation is selected to be 1024, by scanning encoding digital independent third memory block Domain 123, and read since being represented 2 byte;It, will scanning if the address offset amount of end B1 and B2 generation is selected to be 1536 Coded data reads the 4th storage region 124, and is read since being represented 2 byte.
In a preferred embodiment, storage device 120 further includes high voltage and generates unit 126, for being filled to storage Put 120 other module for power supply.
In a preferred embodiment, shown storage device 120 further includes write protection end WP, as write protection end WP When receiving the signal with activation level, storage device 120 is protected, it is impossible to write data into storage device 120;Work as write-in When protection end WP receives the signal with inactive level, storage device 120 can be write data into.
Further, storage device 120 is connected to the sequence controller 110 of liquid crystal display device via I2C buses.I2C Bus is the twin wire universal serial bus developed by PHILIPS companies, including clock end SCL and data terminal SDA, so as to fulfill synchronization Data communicate.For this purpose, the clock end SCL of storage device 120 is connected to the clock end SCL of sequence controller 110, data terminal SDA It is connected to the data terminal SDA of sequence controller 110.
In this embodiment, sequence controller 110 is used as host, and storage device 120 is used as slave.In data/address bus SDA In the byte of transmission, including slave addresses and reading of content, so as to fulfill addressing.According to the selection end B1 of storage device 120 and The second selection signal that B2 is provided can select one of four storage regions, read the scanning encoding data wherein stored.
In the control device, the address offset amount of the selection end connection mode and four storage regions of storage device 120 It is corresponding.The address offset amount of each storage region is different.It is used in the second selection signal that the selection end of storage device 120 provides In generating corresponding address offset amount in addressing, so as to which one of four storage regions is selected to read scanning encoding data.
According to the control device of this embodiment of the invention only with a storage device, which is divided into more A storage region generates the address of storage region according to the second selection signal, so as to read the scanning encoding of different scanning pattern Data.Due to that only with a storage device, circuit board size can be reduced, avoid producing caused by storage device is excessive Product cost and reduce product cost and improve show quality.
Fig. 5 shows to be used to generate the flow chart of the control method of sequential in the liquid crystal display device of the embodiment of the present invention.
In step S01, sent to storage device and read instruction;
This implementation Shi Lizhong, storage device include multiple storage regions, and multiple storage regions store different scanning mould respectively The scanning encoding data of formula.
In step S02, storage device obtains the address of storage region according to selection signal;
In the present embodiment, storage device generates first choice signal according to address signal;Storage device further includes multiple choosings End is selected, multiple selection ends receive multiple second selection signals respectively;Choosing is generated according to first choice signal and the second selection signal Select signal;
And storage device further includes multiple address ends, multiple address ends connect into the numerical value phase of the high significance bit of preset address It is corresponding.
In step S03, storage device reads the scanning encoding data of different scanning pattern according to the address of storage region.
In step S04, judge whether scanning encoding data read success.If read not successfully, step is gone to S02 regains the address of storage region and reads scanning encoding data.If read successfully, step S05 is gone to, the control Method processed terminates.
According to the embodiment of the present invention as described above, these embodiments are there is no all details of detailed descriptionthe, also not It is only the specific embodiment to limit the invention.Obviously, as described above, can make many modifications and variations.This explanation Book is chosen and specifically describes these embodiments, is in order to preferably explain the principle of the present invention and practical application, belonging to making Technical field technical staff can be used using modification of the invention and on the basis of the present invention well.

Claims (8)

1. a kind of control device for liquid crystal display device, which is characterized in that including:
Sequence controller, for providing clock signal;
And storage device, including multiple storage regions, for storing the scanning encoding data of different scanning pattern respectively;
Wherein, the sequence controller is sent to the storage device reads instruction, and the storage device refers to according to the reading It enables and selection signal obtains the address of storage region, so as to read different scanning pattern according to the address of the storage region The scanning encoding data, and the scanning encoding data are sent to the sequence controller;
The storage device generates first choice signal according to address signal, and the storage device further includes multiple selection ends, institute It states multiple selection ends and receives multiple second selection signals respectively;It is produced according to the first choice signal and second selection signal The raw selection signal.
2. control device according to claim 1, which is characterized in that the storage device further includes:
Multiple address ends, the multiple address end connect into corresponding with the numerical value of the high significance bit of preset address;
Clock end, for receiving clock signal;
Data terminal, for receiving data and described address signal;
Control module, for obtaining the address of the storage region according to the reading instruction and the selection signal, according to Read the scanning encoding data of different scanning pattern in the address of the storage region.
3. control device according to claim 2, which is characterized in that in the scanning encoding for reading different scanning pattern During data, the level of the multiple second selection signal is corresponding with the address offset amount of the multiple storage region.
4. control device according to claim 2, which is characterized in that the control module includes:
Control unit is connect with the clock end and the data terminal, for receiving the clock signal, data and described Address signal;
Byte address register, for storing described address signal and preset byte;
Data register, for the data to be read different scanning pattern according to the preset byte according to described address signal The scanning encoding data;
Address decoder is connect with described control unit, for generating the second selection signal according to described address signal;
Address selection unit, for generating the selection signal according to the first choice signal and second selection signal;
Wherein, described control unit is additionally operable to obtain the address of the storage region according to the selection signal, and according to described Read the scanning encoding data of different scanning pattern in the address of storage region.
5. control device according to claim 2, which is characterized in that at least one of the multiple address end address end Ground connection or high level, so as to remain numerical value 0 or numerical value 1.
6. control device according to claim 1, which is characterized in that the scanning encoding data are just to sweep volume selected from 6 Code data, 6 it is counter sweep coded data, 8 just sweeping coded data and 8 anti-one kind swept in coded data.
7. control device according to claim 1, which is characterized in that the storage device, which is that electric erazable programmable is read-only, to be deposited Reservoir is connected to the sequence controller via I2C buses.
8. a kind of control method for liquid crystal display device, which is characterized in that including:
It is sent to storage device and reads instruction;The storage device includes multiple storage regions, the multiple storage region difference Store the scanning encoding data of different scanning pattern;
The storage device obtains the address of storage region according to selection signal;
The storage device reads the scanning encoding data of different scanning pattern according to the address of the storage region;
Wherein, the storage device is further included according to the address of selection signal acquisition storage region:
The storage device generates first choice signal according to address signal;The storage device further includes multiple selection ends, institute It states multiple selection ends and receives multiple second selection signals respectively;It is produced according to the first choice signal and second selection signal The raw selection signal;
And the storage device further includes multiple address ends, the multiple address end connects into the number of the high significance bit of preset address It is worth corresponding.
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CN106782409A (en) * 2017-02-16 2017-05-31 昆山龙腾光电有限公司 For the control device and control method of liquid crystal display device
CN106847163A (en) * 2017-04-19 2017-06-13 惠科股份有限公司 Display panel control circuit, display device and control method thereof
CN107396022B (en) * 2017-08-22 2020-12-29 Tcl华星光电技术有限公司 Data transmission device and liquid crystal display device
CN107831945A (en) * 2017-11-30 2018-03-23 北京集创北方科技股份有限公司 Electronic equipment, display system and its integrated control device, safe verification method
CN110827777B (en) * 2019-10-18 2020-11-24 深圳市华星光电技术有限公司 Display panel driving device and configuration method thereof
CN111583881B (en) * 2020-05-18 2021-09-24 深圳市华星光电半导体显示技术有限公司 Time sequence control panel

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