CN106782409A - 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 PDFInfo
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- CN106782409A CN106782409A CN201710084271.3A CN201710084271A CN106782409A CN 106782409 A CN106782409 A CN 106782409A CN 201710084271 A CN201710084271 A CN 201710084271A CN 106782409 A CN106782409 A CN 106782409A
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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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- 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 for liquid crystal display device, including：Master controller；Time schedule controller, is connected with the master controller by I2C buses, wherein, program storage is provided with the master controller, described program memory includes multiple storage regions, the scanning encoding data for storing different scanning pattern respectively；The time schedule controller sends to the master controller and reads instruction, the master controller is according to the address for reading instruction and selection signal acquisition storage region, so as to read the scanning encoding data of different scanning pattern according to the address of the storage region, and by the scanning encoding data is activation to the time schedule controller.The present invention also provides a kind of control method, due to just with the program storage in master controller, and do not increase storage device, therefore can reduce circuit board size, avoid increase storage device caused by product cost improve and reduce product cost and improve display quality.
Description
Technical field
The invention belongs to display technology field, more particularly, to a kind of control device for liquid crystal display device
And control method.
Background technology
Liquid crystal display (Liquid Crystal Display, LCD) possess frivolous, energy-conservation, it is radiationless many advantages, such as,
Therefore traditional cathode-ray tube (CRT) display has gradually been replaced.Current liquid crystal display is widely used in high definition
The electronics such as clear DTV, desktop computer, personal digital assistant (PDA), notebook computer, mobile phone, digital camera set
In standby.
At present, wide viewing angle belongs to the mainstream development direction of liquid crystal display.Such as, using notebook computer, individual digital
Portable electric appts of the wide viewing angles such as assistant, panel computer, mobile phone etc. use wide viewing angle technology so that people from
Different directions can see complete and distortionless picture when watching the display of wide viewing angle.But, it is personal hidden when being related to
During private and important information, the use in some cases of the display of wide viewing angle can also make people feel inconvenience, such as, in car
Stand etc. car when, the people at user side and rear very likely gets a glimpse of the screen of the portable electric appts of the wide viewing angle of user
Content on curtain.
Therefore, in addition to the demand of wide viewing angle, under the occasion for needing peep-proof, display can be switched or is adjusted
Display to narrow viewing angle pattern also gradually grows up.The display has mixing visual angle (Hybird Viewing
Angle), it is possible to achieve between wide viewing angle (Wide Viewing Angle) and narrow viewing angle (Narrow Viewing Angle)
Switching.
Fig. 1 shows the equivalent circuit diagram of the 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 relative with the first surface of the second glass substrate.
Formed on the first surface of one glass substrate and a plurality of controlling grid scan line and a plurality of source data line intersected with each other is set, at the two
Crossover location set selection thin film transistor (TFT) and pixel electrode.Public electrode is formed in the first surface of the second glass substrate.
Liquid crystal layer is included 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 be with storage capacitance Cs in parallel obtaining 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.Time schedule 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 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, so as to change the orientation of liquid crystal molecule to realize the brightness of corresponding GTG.
For producing the schematic frame of the control device of sequential in the liquid crystal display device that Fig. 2 shows according to prior art
Figure.Time schedule controller 110 reads scanning encoding data from storage device 121 and storage device 122, such that it is able to change as needed
Become scan mode, such as width visual angle scanning switching.The liquid crystal display device of prior art is stored not in a plurality of storage devices
With the scanning encoding data of scan mode, and by controlling the address signal switching sequence controller 110 of multiple storage devices
With the connection between multiple storage devices.In turntable driving, time schedule controller 110 according to the scan mode specified, from corresponding
Storage device read scanning encoding data, and then realize the switching between wide viewing angle and narrow viewing angle.
Another signal for producing the control device of sequential in the liquid crystal display device that Fig. 3 shows according to prior art
Property block diagram.Time schedule controller 110 reads scanning encoding data from the different storage zone of storage device 120, such that it is able to basis
Need to change scan mode.The liquid crystal display device stores different scanning mode in the different storage zone of storage device 120
Scanning encoding data, and the address of the selection end such as B acquisition storage regions of storage device 120 is utilized, and according to storage region
Scanning encoding data are read in address, and then realize the switching between wide viewing angle and narrow viewing angle.
However, increased storage device in above-mentioned control device, excessive printed circuit board (PCB) (Printed can be occupied
Circuit Board, PCB) area, many difficulties are carried out to wiring tape；And storage device can excessively increase product cost, reduce
The competitive advantage of product.
The content of the invention
It is an object of the invention to provide a kind of control device and control method for liquid crystal display device.
According to an aspect of the present invention, there is provided a kind of control device for liquid crystal display device, including：Master controller；
Time schedule controller, is connected with the master controller by I2C buses, wherein, program storage is provided with the master controller,
Described program memory includes multiple storage regions, the scanning encoding data for storing different scanning pattern respectively；When described
Sequence controller is sent to the master controller and reads instruction, and the master controller is obtained according to the reading instruction and selection signal
The address of storage region is taken, so as to read the scanning encoding data of different scanning pattern according to the address of the storage region, and
By the scanning encoding data is activation to the time schedule controller.
Preferably, the master controller also includes：I2C control modules, for receiving the ground sent according to time schedule controller
Location signal；Addressed module, for producing the selection signal according to the interrupt signal of the address signal and outside, and according to
The selection signal obtains the address of storage region.
Preferably, the I2C control modules are additionally operable to read different scanning pattern according to the address of the storage region
Scanning encoding data.
Preferably, described program memory also includes：Multiple address ends, the multiple address end connects into and preset address
The numerical value of significance bit high is corresponding；Selection end, for receiving interrupt signal；Clock end, for receiving clock signal；Data terminal,
For receiving data and the address signal.
Preferably, when the scanning encoding data of different scanning pattern are read, the level of the interrupt signal and institute
The address offset amount for stating multiple storage regions is corresponding.
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 are selected from 6 bit wide visual angle scanning encoding data, 6 narrow viewing angle scanning encodings
One kind in data, 8 bit wide visual angle scanning encoding data and 8 narrow viewing angle scanning encoding data.
Preferably, described program memory is EEPROM, when being connected to described via I2C buses
Sequence controller.
According to another aspect of the present invention, there is provided a kind of control method for liquid crystal display device, including：To main control
Device sends and reads instruction；Program storage is provided with the master controller, described program memory includes multiple storage regions,
Scanning encoding data for storing different scanning pattern respectively；The master controller obtains storage region according to selection signal
Address；The master controller reads the scanning encoding data of different scanning pattern according to the address of the storage region.
Preferably, the master controller also includes according to the address that selection signal obtains storage region：Receive according to sequential
The address signal that controller sends；Interrupt signal according to the address signal and outside produces the selection signal；And
Described program memory also includes multiple addresses end, and the numerical value that the multiple address end connects into preset address significance bit high is relative
Should.
Control device for liquid crystal display device provided in an embodiment of the present invention, master controller is built with time schedule controller
Vertical communication, wherein, the program storage set in master controller includes the storage region of multiple storage scanning encoding data, main control
Device generates the address of storage region according to selection signal, so as to read the scanning encoding data of different scanning pattern.Due to simply
The program storage in master controller is make use of, and does not increase storage device, therefore circuit board size can reduced, avoid increasing
Product cost improves and reduces product cost and improve display quality caused by storage device.
Brief description of the drawings
By description referring to the drawings to the embodiment of the present invention, of the invention above-mentioned and other purposes, feature and
Advantage will be apparent from, in the accompanying drawings：
Fig. 1 shows the equivalent circuit diagram of the liquid crystal display device according to prior art；
For producing the schematic frame of the control device of sequential in the liquid crystal display device that Fig. 2 shows according to prior art
Figure；
Another signal for producing the control device of sequential in the liquid crystal display device that Fig. 3 shows according to prior art
Property block diagram.
Fig. 4 is shown in liquid crystal display device according to embodiments of the present invention for producing the signal of the control device of sequential
Property block diagram.
Fig. 5 is shown in liquid crystal display device according to embodiments of the present invention for producing the flow of the control method of sequential
Figure.
Specific embodiment
Various embodiments of the present invention are more fully described hereinafter with reference to accompanying drawing.In various figures, identical element
Represented using same or similar reference.For the sake of clarity, the various pieces in accompanying drawing are not necessarily to scale.
The present invention can be presented in a variety of manners, some of them example explained below.
Fig. 4 is shown in liquid crystal display device according to embodiments of the present invention for producing the signal of the control device of sequential
Property block diagram.As shown in figure 4, during the control device is for example for the liquid crystal display device shown in Fig. 1, for gate drivers and
Source electrode driver provides various clock signals.
The control device includes time schedule controller 110 and master controller 200.Wherein, the time schedule controller 110 and institute
State master controller 200 to be connected by I2C buses, be provided with program storage 210 in the master controller 200, the program storage
Device 210 for example can be EEPROM (Electrically Erasable Programmable
Read-Only Memory, EEPROM).Program storage includes two storage regions 211 and 212, storage region 211 and 212
The scanning encoding data of different scanning pattern are stored respectively, and such as 6 bit wide visual angle scanning encoding data and 6 narrow viewing angle scannings are compiled
Code data or 8 bit wide visual angle scanning encoding data and 8 narrow viewing angle scanning encoding data.
The capacity of program storage 210 is, for example, 16K memory spaces, and 16K memory spaces are divided into two storage regions,
First storage region to the address realm of the second storage region is followed successively by 0-1023, and 1024-2047 (is represented) using 10 systems, i.e.,
Respectively storage different length and/or coded system scanning encoding data, for example, 6 bit wide visual angle scanning encoding data and 6 it is narrow
Visual angle scanning encoding data or 8 bit wide visual angle scanning encoding data and 8 narrow viewing angle scanning encoding data.
When the master controller 200 receives the interrupt signal of outside, the work of master controller is interrupted, and according to the interruption
The address of signal acquisition storage region.When time schedule controller 110 sends to the master controller 200 reads instruction, the master control
Device processed 200 according to the address of the storage region read different scanning pattern scanning encoding data, and then realize wide viewing angle with
Switching between narrow viewing angle.
In the present embodiment, the master controller 200 also includes I2C control modules 220 and addressed module 230, wherein,
I2C control modules 220 are used to receive the address signal sent according to time schedule controller；Addressed module 230 is used for according to described
The interrupt signal of location signal and outside produces the selection signal, and the ground of storage region is obtained according to the selection signal
Location.I2C control modules 220 are additionally operable to be read according to the address of the storage region scanning encoding data of different scanning pattern.
Program storage has three addresses end A0-A2, and clock end SCL and data terminal SDA.When I2C control modules
When 220 address signals for receiving are 000 binary address, three addresses end A0 to A2 of program storage is grounded respectively.
When the binary address that the address signal that I2C control modules 220 are received is 010, two addresses end A0 of program storage
It is grounded respectively with A2, address end A1 connects high level.When two that the address signal that I2C control modules 220 are received is 001 enter
During address processed, two addresses end A0 and A1 of program storage are grounded respectively, and address end A2 connects high level.When I2C controls
When the address signal that module 220 is received is 011 binary address, the address end A0 ground connection of program storage, two
Address end A1 and A2 connect high level respectively.Now, the connection side at the address signal of data terminal SDA transmission and address end A0-A2 ends
Formula is consistent, and the program storage 210 is chosen to be read out.
Program storage 210 has 1 selection end B, receives 1 interrupt signal, the binary system that selection end B can be produced
Numerical value is one of 0 and 1.
The binary numeral that addressed module 230 is produced according to the interrupt signal produces address offset amount, so as to this be interrupted
Signal maps to the different storage zone of program storage.When binary numeral for example in interrupt signal is respectively 0 and 1, ground
Location side-play amount is respectively 0 and 1024.
Further, program storage 210 is connected to the time schedule controller 110 of liquid crystal display device via I2C buses.
I2C buses are the twin wire universal serial bus developed by PHILIPS companies, including clock end SCL and data terminal SDA, so as to realize
Synchronous data communication.Therefore, the clock end SCL of program storage 210 is connected to the clock end SCL of time schedule controller 110, data
End SDA is connected to the data terminal SDA of time schedule controller 110.
In this embodiment, used as main frame, master controller 200 is used as slave for time schedule controller 110.In data/address bus SDA
In the byte of transmission, including slave addresses and reading of content, so as to realize addressing.Selection end B according to program storage 210 is carried
The interrupt signal of confession, can select one of two storage regions, the scanning encoding data that reading is wherein stored.
In the control device, the address offsets for selecting end connected mode and two storage regions of program storage 210
Amount is corresponding.The address offset amount of each storage region is different.The interrupt signal provided at the selection end of program storage 210 is used
Corresponding address offset amount is produced when in addressing, such that it is able to select one of two storage regions to read scanning encoding data.
Control device for liquid crystal display device provided in an embodiment of the present invention, including master controller, wherein, main control
The program storage set in device includes the storage region of multiple storage scanning encoding data, and total by I2C with time schedule controller
Line sets up communication, and the address of storage region is generated according to outside interrupt signal, so as to read the scanning of different scanning pattern
Coded data, therefore circuit board size can be reduced, product cost is reduced.
Fig. 5 is shown in the liquid crystal display device of the embodiment of the present invention for producing the flow chart of the control method of sequential.
In step S01, sent to master controller and read instruction.
In the present embodiment, program storage is provided with the master controller, described program memory is deposited including multiple
Storage area domain, the scanning encoding data for storing different scanning pattern respectively.
In step S02, the master controller obtains the address of storage region according to selection signal.
In the present embodiment, the master controller receives the address signal sent according to time schedule controller；The main control
Device produces the selection signal according to the interrupt signal of the address signal and outside；
And described program memory also includes multiple addresses end, it is high effectively that the multiple address end connects into preset address
The numerical value of position is corresponding.
In step S03, the master controller is according to different scanning pattern is read in the address of the storage region
Scanning encoding data.
In step S04, judge whether scanning encoding data read successfully.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 embodiments of the invention as described above, these embodiments do not have all of details of detailed descriptionthe, not yet
It is only described 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 principle of the invention and practical application, so that affiliated
Technical field technical staff can be used using modification of the invention and on the basis of the present invention well.
Claims (10)
1. a kind of control device for liquid crystal display device, it is characterised in that including：
Master controller；
Time schedule controller, is connected with the master controller by I2C buses,
Wherein, program storage is provided with the master controller, described program memory includes multiple storage regions, for dividing
Not Cun Chu different scanning pattern scanning encoding data；
The time schedule controller to the master controller send read instruction, the master controller according to it is described read instruction and
Selection signal obtains the address of storage region, so as to the scanning that different scanning pattern is read according to the address of the storage region is compiled
Code data, and by the scanning encoding data is activation to the time schedule controller.
2. control device according to claim 1, it is characterised in that the master controller also includes：
I2C control modules, for receiving the address signal sent according to time schedule controller；
Addressed module, for producing the selection signal according to the interrupt signal of the address signal and outside, and according to institute
State the address that selection signal obtains storage region.
3. control device according to claim 2, it is characterised in that the I2C control modules are additionally operable to be deposited according to
Read the scanning encoding data of different scanning pattern in the address in storage area domain.
4. control device according to claim 2, it is characterised in that described program memory also includes：
Multiple address ends, the multiple address end connects into corresponding with the numerical value of preset address significance bit high；
Selection end, for receiving interrupt signal；
Clock end, for receiving clock signal；
Data terminal, for receiving data and the address signal.
5. control device according to claim 3, it is characterised in that reading the scanning encoding of different scanning pattern
During data, the level of the interrupt signal is corresponding with the address offset amount of the multiple storage region.
6. control device according to claim 4, it is characterised 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.
7. control device according to claim 1, it is characterised in that the scanning encoding data are selected from 6 bit wide visual angles
Scanning encoding data, 6 narrow viewing angle scanning encoding data, 8 bit wide visual angle scanning encoding data and 8 narrow viewing angle scanning encoding numbers
One kind in.
8. control device according to claim 1, it is characterised in that described program memory is that electric erazable programmable is read-only
Memory, the time schedule controller is connected to via I2C buses.
9. a kind of control method for liquid crystal display device, it is characterised in that including：
Sent to master controller and read instruction；Program storage is provided with the master controller, described program memory includes
Multiple storage regions, the scanning encoding data for storing different scanning pattern respectively；
The master controller obtains the address of storage region according to selection signal；
The master controller reads the scanning encoding data of different scanning pattern according to the address of the storage region.
10. control method according to claim 8, it is characterised in that the master controller is obtained according to selection signal and deposited
The address in storage area domain also includes：
Receive the address signal sent according to time schedule controller；
Interrupt signal according to the address signal and outside produces the selection signal；
And described program memory also includes multiple addresses end, the multiple address end connects into preset address significance bit high
Numerical value is corresponding.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710084271.3A CN106782409A (en) | 2017-02-16 | 2017-02-16 | For the control device and control method of liquid crystal display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710084271.3A CN106782409A (en) | 2017-02-16 | 2017-02-16 | For the control device and control method of liquid crystal display device |
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| CN201710084271.3A Pending CN106782409A (en) | 2017-02-16 | 2017-02-16 | For the control device and control method of liquid crystal display device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110491332A (en) * | 2019-09-30 | 2019-11-22 | 京东方科技集团股份有限公司 | Driver, display device and its application method |
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| CN106057165A (en) * | 2016-08-12 | 2016-10-26 | 昆山龙腾光电有限公司 | Control device used for liquid crystal display apparatus and control method thereof |
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| CN1726418A (en) * | 2002-09-20 | 2006-01-25 | 普尔·代普斯有限公司 | Multi-view display |
| KR20110078984A (en) * | 2009-12-31 | 2011-07-07 | 엘지디스플레이 주식회사 | Driving circuit for liquid crystal display device and method for driving the same |
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