CN105869595A - Display driving system and liquid crystal display - Google Patents
Display driving system and liquid crystal display Download PDFInfo
- Publication number
- CN105869595A CN105869595A CN201610395763.XA CN201610395763A CN105869595A CN 105869595 A CN105869595 A CN 105869595A CN 201610395763 A CN201610395763 A CN 201610395763A CN 105869595 A CN105869595 A CN 105869595A
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- Prior art keywords
- signal
- driving system
- source drive
- subelement
- display driving
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Classifications
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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
- G09G3/3611—Control of matrices with row and column drivers
-
- 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
- G09G3/3607—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 for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
Abstract
The invention provides a display driving system and a liquid crystal display. The display driving system comprises a main control unit and a source electrode driving unit, wherein the main control unit is used for performing image processing on a received image signal, generating an overvoltage signal according to the gray value difference value of the two adjacent frames of images, and encoding the processed image signal and the overvoltage signal into a digital image signal to be transmitted to the source electrode driving unit; the source electrode driving unit is used for generating a source electrode driving pixel signal according to the digital image signal, and is also used for generating a first time sequence control signal and a second time sequence control signal; the first time sequence control signal is used for controlling the source electrode driving unit to output the source electrode driving pixel signal to a liquid crystal display panel; the second time sequence control signal is used for controlling a grid electrode driving unit to drive a line electrode wire of the liquid crystal display panel, so that the source electrode driving pixel signal is displayed in the liquid crystal display panel. The display driving system and the liquid crystal display provided by the invention have the advantages of high integration degree, low cost and the like.
Description
Technical field
The present invention relates to technical field of liquid crystal display, particularly relate to a kind of display driving system, and application
The liquid crystal display of this display driving system.
Background technology
Along with the development of technical field of liquid crystal display, LCD device is towards lightening, low-power consumption, low
The direction of cost is developed, and is particularly reducing into present aspect, but in existing TFT LCD panel,
In the presence of the various chips such as sequence control circuit, owing to the cost of manufacture of these chips itself is higher, cause TFT
The cost of display panels, thus reduce the competitiveness of product.
Therefore, it is necessary to provide a kind of display driving system and liquid crystal display, do not changing display image product
In the case of matter, reduce the usage quantity of chip, thus reduce the purpose of cost, improve product competition
Power.
Summary of the invention
The embodiment of the present invention provides a kind of display driving system and applies the liquid crystal display of this display driving system
Device, to solve above-mentioned technical problem.
The embodiment of the present invention provides a kind of display driving system, comprising: main control unit, source drive list
Unit and drive element of the grid；
Described main control unit, is connected with described source drive unit, for the picture signal received being entered
Row image procossing, and produce overvoltage signal according to the gray value difference of adjacent two two field pictures, and by after process
Picture signal and overvoltage Signal coding become data image signal to be transferred to described source drive unit；
Described source drive unit, is connected with described drive element of the grid, for according to described digital picture
Signal generates source drive picture element signal, and described source drive unit is additionally operable to produce the first timing control signal
With the second timing control signal, wherein, described first timing control signal is used for controlling described source drive list
Unit is by described source drive picture element signal output to display panels, and described second timing control signal is used
In the row electrode lines controlling described drive element of the grid driving display panels so that described source drive picture
Element signal shows in display panels.
In the display driving system described in the embodiment of the present invention, described main control unit includes SOC,
Image procossing subelement, overvoltage drive subelement and storing sub-units it is integrated with in wherein said SOC,
Described image procossing subelement carries out image procossing for the picture signal receiving described SOC, and
Picture signal after processing is stored in described storing sub-units, and described overvoltage drive subelement is used for basis
Present image produces overvoltage signal with the gray value difference of the previous frame image of storage in described storing sub-units.
In the display driving system described in the embodiment of the present invention, described SOC is also integrated with white balance
Regulon unit, described white balance adjusting subelement image after described image procossing subelement is processed
Signal carries out brightness regulation and/or colourity regulation, and it is single that the picture signal after regulation is stored in described storage
In unit.
In the display driving system described in the embodiment of the present invention, described SOC is also integrated with clock
Unit, described clock subelement is used for producing clock initial signal, and described clock initial signal is used for triggering institute
State source drive unit and produce the first timing control signal and the second timing control signal.
In the display driving system described in the embodiment of the present invention, described source drive unit includes sequencing contro
Subelement, described sequencing contro subelement is for producing the first sequencing contro letter according to described clock initial signal
Number and the second timing control signal.
In the display driving system described in the embodiment of the present invention, described main control unit and described source drive
Unit is connected and includes being connected by Mini-LVDS interface or RSDS interface.
In the display driving system described in the embodiment of the present invention, described main control unit receives described image letter
Number include receiving described picture signal by HDMI or USB interface.
In the display driving system described in the embodiment of the present invention, described display driving system also includes that direct current turns
DC power source unit, for providing voltage to described source drive unit and drive element of the grid.
In the display driving system described in the embodiment of the present invention, described SOC is also integrated with coding
Unit, for becoming data image signal by the picture signal after described process and overvoltage Signal coding.
The present invention also provides for a kind of liquid crystal display, and described liquid crystal display includes that any one display above-mentioned is driven
Dynamic system.
Compared with prior art, the embodiment of the present invention provide display driving system and apply this display to drive
The liquid crystal display of system, is made by the cooperation of main control unit, source drive unit and drive element of the grid
Showing in display panels by picture signal with i.e. can completing, the display in this preferred embodiment drives
It is high that system and liquid crystal display have integrated level, uses number of chips few, low cost, economizes on resources etc. excellent
Point.
Accompanying drawing explanation
The structural representation of the display driving system that Fig. 1 provides for the preferred embodiment of the present invention；
The structural representation of the main control unit that Fig. 2 provides for the preferred embodiment of the present invention；
The structural representation of the source drive unit that Fig. 3 provides for the preferred embodiment of the present invention.
Detailed description of the invention
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below to embodiment
The accompanying drawing used required in is briefly described.Accompanying drawing in describing below is only the part of the present invention to be implemented
Example, for those of ordinary skills, on the premise of not paying creative work, it is also possible to root
Other accompanying drawing is obtained according to these accompanying drawings.
Refer to the structural representation of the display driving system that Fig. 1, Fig. 1 provide for the preferred embodiment of the present invention,
The display driving system of the present invention includes: main control unit 11, source drive unit 12 and raster data model list
Unit 13；
Described main control unit 11, is connected with described source drive unit 12, for the image that will receive
Signal carries out image procossing, and produces overvoltage signal according to the gray value difference of adjacent two two field pictures, and will
Picture signal and overvoltage Signal coding after process become data image signal to be transferred to described source drive unit
12；
Described source drive unit 12, is connected with described drive element of the grid 13, for according to described number
Word picture signal generates source drive picture element signal, and described source drive unit 12 is additionally operable to produce the first sequential
Control signal and the second timing control signal, wherein, described first timing control signal is used for controlling described source
Described source drive picture element signal is exported to display panels by pole driver element 12, described second sequential
Control signal drives the row electrode lines of display panels for controlling described drive element of the grid 13 so that institute
State source drive picture element signal to show in display panels.
The display driving system in this preferred embodiment is introduced in detail below in conjunction with Fig. 1 to Fig. 3.
Refer to Fig. 2 and Fig. 3, Fig. 2 and Fig. 3 and be respectively the main control list that the preferred embodiment of the present invention provides
Unit and the structural representation of source drive unit.In the preferred embodiment, main control unit 11 includes SOC
Chip, is integrated with image procossing subelement 111, overvoltage drive subelement 112, storage in SOC
Subelement 113, white balance adjusting subelement 114, coded sub-units 115 and clock subelement 116, source electrode
Driver element 12 includes sequencing contro subelement 121.
SOC in main control unit 11 passes through HDMI from external reception image to display
Signal, in other examples, it would however also be possible to employ other interface picture signals such as USB interface,
This is not specifically limited.
After SOC receives picture signal, image procossing subelement 111 will carry out figure to picture signal
As process, and will process after picture signal be stored in storing sub-units 113, here, image procossing is sub
Picture can be shown to arrange according to user picture signal carries out image procossing by unit 111, such as,
User needs to turn down the colour temperature of currently displaying picture, and user uses the equipment such as remote controller to send out to display driving system
Sending control signal, picture signal will be done corresponding image according to this control signal by image procossing subelement 111
Process so that the picture demonstrated meets the requirement of user, and the picture signal after processing is stored in storage
In subelement 113, during the picture signal that image procossing subelement 111 continues after treatment, single according to storage
Current image signal is processed by the previous frame image of unit 113 storage, such as, and storing sub-units 113
The image that previous frame image is low colour temperature of storage, then image procossing subelement 111 is by follow-up picture signal
Also the image of low colour temperature it is processed into.
White balance adjusting subelement 114 obtains image procossing subelement 111 from storing sub-units 113 and processes
After picture signal, and to process after picture signal carry out brightness regulation and colourity regulation, and will regulation after
Picture signal be stored in storing sub-units 113, the most in other examples, it is also possible to only carry out
Brightness regulation or colourity regulation, be not specifically limited at this.
Overvoltage drive subelement 112 is according to the previous frame image stored in storing sub-units 113 and present image
Gray value difference produce overvoltage signal, previous frame image is the biggest with the gray value difference of present image, is produced
The raw magnitude of voltage in overvoltage signal is the biggest, and this overvoltage signal is used for increasing the voltage that liquid crystal molecule two ends apply,
Liquid crystal molecule can quickly be overturn, the motion blur phenomenon occurred when being prevented effectively from display image, at this preferably
In embodiment, owing to public storage of overvoltage drive subelement 112 and image procossing subelement 111 is single
Unit 113, greatly reduces the cost of manufacture of display driving system, improves the integrated level of SOC simultaneously,
The structure making display driving system is more simplified.
Coded sub-units 115 is used for will be at image procossing subelement 111 and white balance adjusting subelement 114
Picture signal after reason becomes data image signal with overvoltage Signal coding.Clock subelement 116 produces clock and rises
Beginning signal, data image signal is passed through Mini-LVDS together with clock initial signal by main control unit 11
Interface transmits to source drive unit 12, certainly, in other examples, it would however also be possible to employ RSDS connects
Mouth waits other interfaces to transmit to source drive unit 12, is not specifically limited at this.
After source drive unit 12 receives clock initial signal and data image signal, will be according to digitized map
Image signal generates source drive picture element signal, and meanwhile, sequencing contro subelement 121 is according to clock initial signal
Producing the first timing control signal and the second timing control signal, the first timing control signal is used for controlling source electrode
Driver element 12 is by source drive picture element signal output to display panels, and the second timing control signal will
It is transferred to drive element of the grid 13, drives the row of display panels for control gate driver element 13
Electrode wires, under the common effect of the first timing control signal and the second timing control signal, by source drive
Picture element signal shows in an orderly manner in display panels.
In the preferred embodiment, display driving system also includes DC-DC power supply unit, for by main
The voltage of plate input is converted into corresponding magnitude of voltage and is input to source drive unit 12 and drive element of the grid 13
In, it is ensured that unit can be properly functioning.
The display driving system that this preferred embodiment provides, the main control unit picture signal to receiving is carried out
Image procossing, and produce overvoltage signal, and the picture signal after processing becomes digital with overvoltage Signal coding
Picture signal is transmitted to source drive unit, and source drive unit generates source drive according to data image signal
Picture element signal, and produce the first timing control signal and the second timing control signal, in the first sequencing contro
Under the control of signal and the second timing control signal, source drive picture element signal is shown at display panels
In, compared with prior art, the integrated level of the display driving system in this preferred embodiment is high, and uses
Number of chips few, greatly reduce the cost of display driving system, economize on resources.
This preferred embodiment also provides for a kind of liquid crystal display, this liquid crystal display include display panels with
And above-mentioned display driving system, owing to the structure of display driving system is introduced in detail having done,
Do not repeat them here.Liquid crystal display in this preferred embodiment, owing to have employed the display that the present invention provides
Drive system so that it is there is integrated level height, simple in construction, low cost and other advantages, meanwhile, the competition of product
Power also increases.
In sum, although the present invention is disclosed above with preferred embodiment, but above preferred embodiment is not
In order to limit the present invention, those of ordinary skill in the art, without departing from the spirit and scope of the present invention,
All can make various change and retouching, therefore protection scope of the present invention defines in the range of standard with claim.
Claims (10)
1. a display driving system, it is characterised in that including: main control unit, source drive unit and
Drive element of the grid；
Described main control unit, is connected with described source drive unit, for the picture signal received being entered
Row image procossing, and produce overvoltage signal according to the gray value difference of adjacent two two field pictures, and by after process
Picture signal and overvoltage Signal coding become data image signal to be transferred to described source drive unit；
Described source drive unit, is connected with described drive element of the grid, for according to described digital picture
Signal generates source drive picture element signal, and described source drive unit is additionally operable to produce the first timing control signal
With the second timing control signal, wherein, described first timing control signal is used for controlling described source drive list
Unit is by described source drive picture element signal output to display panels, and described second timing control signal is used
In the row electrode lines controlling described drive element of the grid driving display panels so that described source drive picture
Element signal shows in display panels.
Display driving system the most according to claim 1, it is characterised in that described main control unit bag
Include SOC, wherein said SOC is integrated with image procossing subelement, overvoltage drive subelement
And storing sub-units, described image procossing subelement enters for the picture signal receiving described SOC
Row image procossing, and will process after picture signal be stored in described storing sub-units, described overvoltage drive
Subelement is for according to present image and the gray value difference of the previous frame image of storage in described storing sub-units
Produce overvoltage signal.
Display driving system the most according to claim 2, it is characterised in that in described SOC
Being also integrated with white balance adjusting subelement, described white balance adjusting subelement is for described image procossing list
Picture signal after unit processes carries out brightness regulation and/or colourity regulation, and by the picture signal storage after regulation
In described storing sub-units.
Display driving system the most according to claim 2, it is characterised in that in described SOC
Being also integrated with clock subelement, described clock subelement is used for producing clock initial signal, and described clock initiates
Signal is used for triggering described source drive unit and produces the first timing control signal and the second timing control signal.
Display driving system the most according to claim 4, it is characterised in that described source drive unit
Including sequencing contro subelement, described sequencing contro subelement is for producing the according to described clock initial signal
One timing control signal and the second timing control signal.
Display driving system the most according to claim 2, it is characterised in that in described SOC
It is also integrated with coded sub-units, for the picture signal after described process and overvoltage Signal coding are become numeral
Picture signal.
Display driving system the most according to claim 1, it is characterised in that described main control unit with
Described source drive unit is connected and includes being connected by Mini-LVDS interface or RSDS interface.
Display driving system the most according to claim 1, it is characterised in that described main control unit connects
Receive described picture signal to include receiving described picture signal by HDMI or USB interface.
Display driving system the most according to claim 1, it is characterised in that described display driving system
Also include DC-DC power supply unit, for providing electricity to described source drive unit and drive element of the grid
Pressure.
10. a liquid crystal display, it is characterised in that described liquid crystal display includes claim 1 to 9
In any one display driving system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610395763.XA CN105869595B (en) | 2016-06-03 | 2016-06-03 | A kind of display driving system and liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610395763.XA CN105869595B (en) | 2016-06-03 | 2016-06-03 | A kind of display driving system and liquid crystal display |
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| Publication Number | Publication Date |
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| CN105869595A true CN105869595A (en) | 2016-08-17 |
| CN105869595B CN105869595B (en) | 2018-07-27 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107643850A (en) * | 2017-10-13 | 2018-01-30 | 北京集创北方科技股份有限公司 | The drive system of display panel |
| CN109358458A (en) * | 2018-10-22 | 2019-02-19 | 深圳市华星光电半导体显示技术有限公司 | Display device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002202493A (en) * | 2000-12-28 | 2002-07-19 | Toshiba Corp | Liquid crystal display device |
| CN103235431B (en) * | 2013-04-03 | 2015-06-17 | 深圳市华星光电技术有限公司 | Liquid crystal display panel and driving method thereof |
| CN104680967A (en) * | 2015-03-20 | 2015-06-03 | 京东方科技集团股份有限公司 | Display panel and display device |
| CN104751766B (en) * | 2015-04-08 | 2017-08-29 | 京东方科技集团股份有限公司 | A kind of display panel, its driving method and display device |
| TWM508099U (en) * | 2015-05-12 | 2015-09-01 | Giantplus Technology Co Ltd | Display apparatus and driving apparatus thereof |
-
2016
- 2016-06-03 CN CN201610395763.XA patent/CN105869595B/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107643850A (en) * | 2017-10-13 | 2018-01-30 | 北京集创北方科技股份有限公司 | The drive system of display panel |
| CN109358458A (en) * | 2018-10-22 | 2019-02-19 | 深圳市华星光电半导体显示技术有限公司 | Display device |
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| CN105869595B (en) | 2018-07-27 |
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