CN106057165A - Control device used for liquid crystal display apparatus and control method thereof - Google Patents
Control device used for liquid crystal display apparatus and control method thereof Download PDFInfo
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- CN106057165A CN106057165A CN201610661885.9A CN201610661885A CN106057165A CN 106057165 A CN106057165 A CN 106057165A CN 201610661885 A CN201610661885 A CN 201610661885A CN 106057165 A CN106057165 A CN 106057165A
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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
- G09G3/34—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 by control of light from an independent source
- G09G3/36—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 by control of light from an independent source using liquid crystals
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- Liquid Crystal Display Device Control (AREA)
Abstract
The invention discloses a control device used for a liquid crystal display apparatus and a control method thereof. The control device comprises a sequential controller and a storage apparatus, wherein the sequential controller is used for providing a sequential signal; and the storage apparatus includes a plurality of storage areas used for storing scanning code data of different scanning modes respectively. The sequential controller sends a reading instruction to the storage apparatus. The storage apparatus acquires addresses of the storage areas according to the reading instruction and a selection signal, then reads the scanning code data of the different scanning modes according to the addresses of the storage areas and sends the scanning code data to the sequential controller. In the invention, only one storage apparatus is adopted; the storage apparatus is divided into a plurality of storage areas; and according to the selection signal, the addresses of the storage areas are generated so as to read the scanning code data of the different scanning modes. Therefore, a circuit board size can be reduced, a condition that there are a lot of storage apparatuses so that product cost is high is avoided, the product cost is reduced and display quality is improved.
Description
Technical field
The invention belongs to display technology field, more particularly, to for the control device of liquid crystal indicator and control
Method processed.
Background technology
EEPROM chip (Electrically Erasable Programmable Read-
Only Memory, EEPROM) have the most erasable and power down can not fall the feature of data, much as electricity erasable memorizer
Hardware is required for EEPROM to store hardware data or the configuration information of some keys.
There is the nonvolatile memory (being hereafter reduced to " memorizer ") represented by ROM or EEPROM to be used as remembering
Employ and drive the data of operation of timing controller (TCON) of carrying on substrate, display device in be set in display device
The example of the device of production history etc..
Liquid crystal indicator is that the phenomenon that the orientation utilizing liquid crystal molecule changes under the work of electric field changes light
The display device of source light transmittance.Liquid crystal indicator has been widely used for mobile terminal and the such as flat board electricity of such as mobile phone
Depending on large scale display floater in.
Fig. 1 illustrates the equivalent circuit diagram of the liquid crystal indicator according to prior art.Liquid crystal indicator includes the first glass
Glass substrate and the second glass substrate, the first surface of the first glass substrate and the first surface of the second glass substrate are relative.?
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 are set, at the two
Crossover location selection thin film transistor (TFT) and pixel electrode is set.First surface at the second glass substrate forms public electrode.
Comprise 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 storage electric capacity Cs in parallel to obtain the longer retention time.
Gate drivers 310 is connected to a plurality of controlling grid scan line, is used for providing grid voltage G1 to Gm.Source electrode driver
410 are connected to a plurality of source data line, are used for providing gray scale voltage S1 to Sn.Time schedule controller 110 respectively with gate drivers
310 are connected with source electrode driver 410, thus provide various clock signal to gate drivers 310 and source electrode driver 410.
In the driving method of above-mentioned liquid crystal indicator, in each frame period, in the control of time schedule 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 GTG applies to pixel capacitance Clc, thus changes the orientation of liquid crystal molecule with the brightness realizing corresponding GTG.
Fig. 2 illustrate according in the liquid crystal indicator of prior art for produce sequential control device schematic frame
Figure.Time schedule controller 110 reads scanning encoding data, such that it is able to change as required from storage device 121 and storage device 122
Become scan mode, such as positive counter-scanning switching.The liquid crystal indicator of prior art stores difference in a plurality of storage devices and sweeps
Retouch the scanning encoding data of mode, and utilize between switch element 130 switching sequence controller 110 and multiple storage device
Connect.When turntable driving, time schedule controller 110, according to the scan mode specified, reads scanning from corresponding storage device and compiles
Code data.
But, the storage device in above-mentioned control device is too much, can occupy too much printed circuit board (PCB) (Printed
Circuit Board, PCB) area, brings many difficulties to wiring；And store device and too much can increase product cost, reduce
The competitive advantage of product.
Summary of the invention
It is an object of the invention to provide a kind of control device for liquid crystal indicator and control method.
According to an aspect of the present invention, it is provided that a kind of control device for liquid crystal indicator, including:
Time schedule controller, is used for providing clock signal；
And storage device, including multiple memory areas, for storing the scanning encoding data of different scanning pattern respectively；
Wherein, described time schedule controller sends to described storage device and reads instruction, and described storage device is according to described reading
Instruction fetch and the address of selection signal acquisition memory area, thus read different scanning mould according to the address of described memory area
The described scanning encoding data of formula, and described scanning encoding data are sent to described time schedule controller.
Preferably, described storage device produces the first selection signal according to address signal, and described storage device also includes many
Individual selection end, the plurality of selection end receives multiple second respectively and selects signal；Signal and described the is selected according to described first
Two select signal to produce described selection signal.
Preferably, described storage device also includes:
Multiple addresses end, the plurality of address end connects into corresponding with the numerical value of preset address high significance bit；
Clock end, is used for receiving clock signal；
Data terminal, is used for receiving data and described address signal；
Control module, for reading the address of memory area described in instruction and described selection signal acquisition according to described,
The described scanning encoding data of different scanning pattern are read in address according to described memory area.
Preferably, when reading the described scanning encoding data of different scanning pattern, the plurality of second selects signal
Level is corresponding with the address offset amount of the plurality of memory area.
Preferably, described control module includes: control unit, is connected with described clock end and described data terminal, is used for connecing
Receive described clock signal, described data and described address signal；Byte address register, is used for storing described address signal with pre-
If byte；Data register, for reading different scanning pattern by data according to described default byte according to described address signal
Scanning encoding data；Address decoder, is connected with described control unit, for producing the second selection according to described address signal
Signal；Address selection unit, selects signal for selecting signal and second to select signal to produce according to first；
Wherein, described control unit is additionally operable to the address according to described selection signal acquisition memory area, and according to described
The described scanning encoding data of different scanning pattern are read in the address of memory area.
Preferably, at least one address end ground connection or the high level in the end of the plurality of address, thus remain numerical value 0 or
Numerical value 1.
Preferably, described scanning encoding data for selected from 6 just sweeping coded data, 6 counter sweep coded data, 8 just sweep
Coded data and 8 anti-one swept in coded data.
Preferably, described storage device is EEPROM, is connected to described sequential via I2C bus
Controller.
According to a further aspect in the invention, it is provided that a kind of control method for liquid crystal indicator, including:
Send to storage device and read instruction；Described storage device includes multiple memory area, the plurality of memory area
Store the scanning encoding data of different scanning pattern respectively；
Described storage device is according to the address selecting signal acquisition memory area；
Described storage device reads the described scanning encoding data of different scanning pattern according to the address of described memory area.
Preferably, described storage device produces the first selection signal according to address signal；Described storage device also includes many
Individual selection end, the plurality of selection end receives multiple second respectively and selects signal；Signal and described the is selected according to described first
Two select signal to produce described selection signal；
And described storage device also includes that multiple addresses end, the plurality of address end connect into preset address high significance bit
Numerical value corresponding.
This storage device, only with a storage device, is divided into many by the control device according to this embodiment of the invention
Individual memory area, according to the address selecting signal to generate memory area, thus reads the scanning encoding data of different scanning pattern.
Owing to only with a storage device, circuit board size therefore can be reduced, avoids storing the product one-tenth that device too much causes
Originally reduce product cost and improve display quality.
Accompanying drawing explanation
By description to the embodiment of the present invention referring to the drawings, above-mentioned and other purposes of the present invention, feature and
Advantage will be apparent from, in the accompanying drawings:
Fig. 1 illustrates the equivalent circuit diagram of the liquid crystal indicator according to prior art；
Fig. 2 illustrate according in the liquid crystal indicator of prior art for produce sequential control device schematic frame
Figure；
Fig. 3 illustrates in the liquid crystal indicator of the embodiment of the present invention for producing the schematic frame controlling device of sequential
Figure；
Fig. 4 shows the schematic block diagram storing device in the liquid crystal indicator of the embodiment of the present invention；
Fig. 5 illustrates in the liquid crystal indicator of the embodiment of the present invention for producing the flow chart of the control method of sequential.
Detailed description of the invention
It is more fully described various embodiments of the present invention hereinafter with reference to accompanying drawing.In various figures, identical element
Same or similar reference is used to represent.For the sake of clarity, the various piece in accompanying drawing is not necessarily to scale.
The present invention can present in a variety of manners, some of them example explained below.
Fig. 3 shows in liquid crystal indicator according to embodiments of the present invention for producing the signal controlling device of sequential
Property block diagram；Fig. 4 shows the schematic block diagram storing device in the liquid crystal indicator of the embodiment of the present invention.
As shown in Figure 3 and Figure 4:
This control device is such as in the liquid crystal indicator shown in Fig. 1, for gate drivers and source drive
Device provides various clock signals.
This control device includes time schedule controller 110 and storage device 120, and storage device 120 can be such as that electricity can
EPROM (Electrically Erasable Programmable Read-Only Memory,
EEPROM).Storage device 120 includes four memory areas 121 to 124, and memory area 121 to 124 stores different scanning respectively
The scanning encoding data of pattern, such as 6 just sweeping coded data, 6 counter sweep coded data, 8 just to sweep coded data and 8 anti-
Sweep coded data.
Specifically, the capacity for example, 16K memory space of storage device 120, use 14 bit address addressing.16K is stored
Space is divided into four memory areas, and the first memory area is followed successively by 0-511 to the address realm of the 4th memory area, 512-
1023,1024-1535,1536-2047 (use 10 systems to represent), the most respectively storage different length and/or the sweeping of coded system
Retouch coded data, such as, 6 just sweeping coded data, 6 counter sweep coded data, 8 just sweeping coded data and 8 counter sweep coding
Data.
Storage device 120 has three address end A0 to A2, and clock end SCL and data terminal SDA.When storage device
During three address end A0 to A2 of 120 ground connection respectively so that the address of storage device 120 be high significance bit be the two of 000 beginning
System address.When two address end A0 and A2 ground connection respectively of EEPROM storage 120, an address end A1 connects high level
Time so that storage device 120 address be high significance bit be the binary address of 010 beginning.Two ground when storage device 120
Location end A0 and A1 ground connection respectively, when an 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 an address end A0 ground connection of storage device 120, two address end A1 and A2 connect height respectively
During level so that storage device 120 address be high significance bit be the binary address of 011 beginning.
Storage device 120 has 2 and selects end B1 and B2, selects end B1 and B2 at two, receives 2 second and selects letter
Number.Two select the binary numeral that can produce of end B1 and B2 is one of 00,01,10 and 11.
Storage device 120 also includes that control module 125 produces address according to the second binary numeral selecting signal to produce
Side-play amount, thus the second selection signal is mapped to store the different storage zone of device 120.Such as select signal second
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 memorizer 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 connects, and is used for receiving clock signal sum according to this and address signal.Byte address register 1252 is used for storing address signal
With default byte.Address decoder 1253 produces the first selection signal for address signal control unit 1251 received.Ground
Location selects unit 1254 to select signal for selecting signal and second to select signal to produce according to first.Wherein, control unit
1251 are additionally operable to according to the address selecting signal acquisition memory area, and write according to the address of memory area or read difference
The scanning encoding data of scan pattern.Data register 1255 for according to address signal by data according to the write of default byte or
Person reads the scanning encoding data of different scanning pattern.
When the high-order effective address of the address signal of data terminal SDA transmission is consistent with the connected mode of address end A0-A2 end,
This EEPROM is chosen to be read out or read, and now, when the address that address decoder 1253 decodes is 0, and selects
When the address offset amount that end B1 and B2 produces is 0, then by scanning encoding digital independent the first memory area 121, and from representing 0
Byte starts to read；If the address offset amount selecting end B1 and B2 to produce is 512, then scanning encoding digital independent second is deposited
Storage area territory 122, and start to read from the byte representing 0；If the address offset amount selecting end B1 and B2 to produce is 1024, then will
Scanning encoding digital independent the 3rd memory area 123, and start to read from the byte representing 0；If selecting end B1 and B2 to produce
When address offset amount is 1536, then by scanning encoding digital independent the 4th memory area 124, and start to read from the byte representing 0
Take.
When the address that address decoder 1253 decodes is 2, and the address offset amount selecting end B1 and B2 to produce is 0
Time, then by scanning encoding digital independent the first memory area 121, and start to read from the byte representing 2；If selecting end B1 and B2
When the address offset amount produced is 512, then by scanning encoding digital independent the second memory area 122, and open from the byte representing 2
Begin to read；If the address offset amount selecting end B1 and B2 to produce is 1024, then by scanning encoding digital independent the 3rd memory block
Territory 123, and start to read from the byte representing 2；If the address offset amount selecting end B1 and B2 to produce is 1536, then will scanning
Coded data reads the 4th memory area 124, and starts to read from the byte representing 2.
In a preferred embodiment, storage device 120 also includes high voltage generation unit 126, for storage dress
Put other module for power supply of 120.
In a preferred embodiment, shown storage device 120 also 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
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 time schedule controller 110 of liquid crystal indicator via I2C bus.I2C
Bus is the twin wire universal serial bus developed by PHILIPS company, including clock end SCL and data terminal SDA, thus realizes synchronizing
Data communication.To this end, the clock end SCL of storage device 120 is connected to the clock end SCL, data terminal SDA of time schedule controller 110
It is connected to the data terminal SDA of time schedule controller 110.
In this embodiment, time schedule controller 110 is as main frame, and storage device 120 is as from machine.At data/address bus SDA
In the byte transmitted, including slave addresses and reading of content, thus realize addressing.According to storage device 120 selection end B1 and
The second selection signal that B2 provides, can select one of four memory areas, read the scanning encoding data wherein stored.
In this control device, the address offset amount selecting end connected mode and four memory areas of storage device 120
Corresponding.The address offset amount of each memory area is different.The the second selection signal selecting end to provide at storage device 120 is used
Corresponding address offset amount is produced, such that it is able to select one of four memory areas to read scanning encoding data when in addressing.
This storage device, only with a storage device, is divided into many by the control device according to this embodiment of the invention
Individual memory area, selects signal to generate the address of memory area according to second, thus reads the scanning encoding of different scanning pattern
Data.Owing to only with a storage device, circuit board size therefore can be reduced, avoids storing the product that device too much causes
Product cost and reduce product cost and improve display quality.
Fig. 5 illustrates in the liquid crystal indicator of the embodiment of the present invention for producing the flow chart of the control method of sequential.
In step S01, send to storage device and read instruction；
This enforcement Shi Lizhong, storage device includes that multiple memory area, multiple memory areas store different scanning mould respectively
The scanning encoding data of formula.
In step S02, storage device is according to the address selecting signal acquisition memory area；
In the present embodiment, storage device produces the first selection signal according to address signal；Storage device also includes multiple choosing
Selecting end, multiple selection ends receive multiple second respectively and select signal；Signal and second is selected to select signal to produce choosing according to first
Select signal；
And storage device also includes that multiple addresses end, multiple addresses end connect into the numerical value phase of preset address high significance bit
Corresponding.
In step S03, storage device reads the scanning encoding data of different scanning pattern according to the address of memory area.
In step S04, it is judged that whether scanning encoding data read successfully.If reading unsuccessful, then go to step
S02, regains the address of memory area and reads scanning encoding data.If reading successfully, then go to step S05, this control
Method processed terminates.
According to embodiments of the invention as described above, these embodiments do not have all of details of detailed descriptionthe, the most not
Limit the specific embodiment that this invention is only described.Obviously, as described above, can make many modifications and variations.This explanation
These embodiments are chosen and specifically described to book, is to preferably explain the principle of the present invention and actual application, so that affiliated
Technical field technical staff can utilize the present invention and amendment on the basis of the present invention to use well.
Claims (10)
1. the control device for liquid crystal indicator, it is characterised in that including:
Time schedule controller, is used for providing clock signal；
And storage device, including multiple memory areas, for storing the scanning encoding data of different scanning pattern respectively；
Wherein, described time schedule controller sends to described storage device and reads instruction, and described storage device refers to according to described reading
Order and the address of selection signal acquisition memory area, thus read different scanning pattern according to the address of described memory area
Described scanning encoding data, and described scanning encoding data are sent to described time schedule controller.
Control device the most according to claim 1, it is characterised in that described storage device produces first according to address signal
Selecting signal, described storage device also includes that multiple selection end, the plurality of selection end receive multiple second respectively and select signal；
Signal and described second is selected to select signal to produce described selection signal according to described first.
Control device the most according to claim 2, it is characterised in that described storage device also includes:
Multiple addresses end, the plurality of address end connects into corresponding with the numerical value of preset address high significance bit；
Clock end, is used for receiving clock signal；
Data terminal, is used for receiving data and described address signal；
Control module, for reading the address of memory area described in instruction and described selection signal acquisition according to described, according to
The described scanning encoding data of different scanning pattern are read in the address of described memory area.
Control device the most according to claim 3, it is characterised in that at the described scanning encoding reading different scanning pattern
During data, the level of the plurality of second selection signal is corresponding with the address offset amount of the plurality of memory area.
Storage device the most according to claim 3, it is characterised in that described control module includes:
Control unit, is connected with described clock end and described data terminal, is used for receiving described clock signal, described data and described
Address signal；
Byte address register, is used for storing described address signal and default byte；
Data register, for reading different scanning pattern by described data according to described default byte according to described address signal
Described scanning encoding data；
Address decoder, is connected with described control unit, for producing the second selection signal according to described address signal；
Address selection unit, for selecting signal and described second to select signal to produce described selection signal according to described first；
Wherein, described control unit is additionally operable to the address according to memory area described in described selection signal acquisition, and according to described
The described scanning encoding data of different scanning pattern are read in the address of memory area.
Control device the most according to claim 3, it is characterised in that at least one the address end in the end of the plurality of address
Ground connection or high level, thus remain numerical value 0 or numerical value 1.
Control device the most according to claim 1, it is characterised in that described scanning encoding data are for just to sweep volume selected from 6
Code data, 6 counter sweep coded data, 8 just sweeping coded data and 8 anti-one swept in coded data.
Control device the most according to claim 1, it is characterised in that described storage device is that electric erazable programmable is read-only to be deposited
Reservoir, is connected to described time schedule controller via I2C bus.
9. the control method for liquid crystal indicator, it is characterised in that including:
Send to storage device and read instruction；Described storage device includes multiple memory area, and the plurality of memory area is respectively
The scanning encoding data of storage different scanning pattern；
Described storage device is according to the address selecting signal acquisition memory area；
Described storage device reads the described scanning encoding data of different scanning pattern according to the address of described memory area.
Control method the most according to claim 9, it is characterised in that described storage device is deposited according to selection signal acquisition
The address in storage area territory also includes:
Described storage device produces the first selection signal according to address signal；Described storage device also includes multiple selection end, institute
State multiple selection end and receive multiple second selection signal respectively；Signal and described second is selected to select signal to produce according to described first
Raw described selection signal；
And described storage device also includes that multiple addresses end, the plurality of address end connect into the number of preset address high significance bit
It is worth corresponding.
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| CN201610661885.9A CN106057165B (en) | 2016-08-12 | 2016-08-12 | For the control device and control method of liquid crystal display device |
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| CN201610661885.9A CN106057165B (en) | 2016-08-12 | 2016-08-12 | For the control device and control method of liquid crystal display device |
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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 |
| CN107396022A (en) * | 2017-08-22 | 2017-11-24 | 深圳市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 |
| WO2018192022A1 (en) * | 2017-04-19 | 2018-10-25 | 惠科股份有限公司 | Control circuit of display panel, display device and control metod therefor |
| CN110827777A (en) * | 2019-10-18 | 2020-02-21 | 深圳市华星光电技术有限公司 | Display panel driving device and configuration method thereof |
| CN111583881A (en) * | 2020-05-18 | 2020-08-25 | 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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| CN111583881A (en) * | 2020-05-18 | 2020-08-25 | 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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| CN106057165B (en) | 2018-07-10 |
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Address after: 215301, 1, Longteng Road, Kunshan, Jiangsu, Suzhou Patentee after: Kunshan Longteng Au Optronics Co Address before: 215301, 1, Longteng Road, Kunshan, Jiangsu, Suzhou Patentee before: Kunshan Longteng Optronics Co., Ltd. |