CN107039012B - A kind of sequence controller and liquid crystal display device - Google Patents
A kind of sequence controller and liquid crystal display device Download PDFInfo
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- CN107039012B CN107039012B CN201710370283.2A CN201710370283A CN107039012B CN 107039012 B CN107039012 B CN 107039012B CN 201710370283 A CN201710370283 A CN 201710370283A CN 107039012 B CN107039012 B CN 107039012B
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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
Abstract
The invention discloses a kind of sequence controller and liquid crystal display device, which includes that power supply restarts controller, frame buffer, configuration data register, pilot controller, the controllable switch being connected between configuration data register and pilot controller, the main channel of receiver and accessory channel, recording controller, pixel format device and transmitter.Power supply of the invention restarts controller using sequence controller power supply power supply, and uncontrolled reset signal influences；Configuration data register disconnects after powered on moment download configuration data with code register, no longer downloads from code register again as long as long as powering off, and uncontrolled reset signal influences；The configuration data of configuration data register can be modified after powering on by accessory channel, while recording controller directly can select frame buffer by the configuration data of accessory channel control or configuration data register；It controls reset signal and reset operation is carried out to sequence controller, only part code is refreshed.
Description
Technical field
The present invention relates to technical field of liquid crystal display more particularly to a kind of sequence controllers and liquid crystal display device.
Background technique
Since liquid crystal display device has many advantages, such as frivolous, energy saving, radiationless, it is now widely used for TV, a
In the electronic equipments such as people's computer, tablet computer, personal digital assistant (PDA), mobile phone, digital camera.Liquid crystal display device has
Different operating modes, such as 6/8bit code or wide and narrow viewing angle modes etc..Such as user is when using liquid crystal display device
Think when leniently field-of-view mode is switched to narrow viewing angle mode or user wants to cut from narrow viewing angle mode when using liquid crystal display device
When being changed to wide viewing angle mode, requiring to shut down to switch over afterwards and restart liquid crystal display device is just able to achieve, and is made with reaching
It obtains the information shown in liquid crystal display device to be protected, avoids the leakage of privacy or business information, or carry out information sharing
Purpose.
In the implementation of the present invention, inventor has found that the prior art has the following problems: in order to realize width visual angle
Handoff functionality needs to carry out sequence controller to restart movement, so that sequence controller code is switched to the timing of different editions
Controller code；Sequence controller restarts movement, easily causes that sequence controller can not normally be shown, liquid crystal display device is shown
Phenomena such as black picture, width view angle switch overlong time.
Summary of the invention
The main purpose of the embodiment of the present invention is to propose a kind of sequence controller and liquid crystal display device, it is intended to solve existing
The problem of with the presence of technology.
To achieve the above object, first aspect of the embodiment of the present invention provides a kind of sequence controller, the sequence controller
Controller is restarted including power supply, frame buffer, configuration data register, pilot controller, is connected to the configuration data deposit
The main channel of controllable switch, receiver between device and the pilot controller and accessory channel, recording controller, pixel format
Change device and transmitter；
The power supply restarts controller, for controlling the frame buffer and the configuration data according to power supply Restart Signal
Data in register empty, and control the controllable switch according to the power supply Restart Signal and be connected；
The configuration data register, for being downloaded by the pilot controller after controllable switch conducting
Configuration data；It is also used to after the self refresh signal of sequence controller is opened, configuration data is obtained by the accessory channel
Modification information modifies to the configuration data in the configuration data register according to the configuration data modification information；
The recording controller, for the self refresh signal of sequence controller unlatching after, according to the accessory channel
Received data selection instruction or the configuration data for reading the configuration data register, by the received image in the main channel
Data are transferred to the pixel format device by the frame buffer；
The pixel format device is cut for the carry out width visual angle after the unlatching of the self refresh signal of sequence controller
When changing, according to the control reset signal of sequence controller, sequence controller code is downloaded by the pilot controller, and by institute
State frame buffer transmission image data handled after display panel be transferred to by the transmitter shown.
Further, the power supply restarts controller, is also used to after the power supply Restart Signal is closed, described in control
Controllable switch disconnects.
Further, the recording controller is also used to before the self refresh signal of sequence controller is opened, will be described
The received image data in main channel is transferred to the pixel format device.
Further, the receiver is embedded display interface receiver.
In addition, to achieve the above object, second aspect of the embodiment of the present invention provides a kind of liquid crystal display device, the liquid crystal
Display device includes display panel and sequence controller；The sequence controller includes that power supply is restarted controller, frame buffer, matched
It sets data register, pilot controller, be connected to controllably opening between the configuration data register and the pilot controller
Pass, the main channel of receiver and accessory channel, recording controller, pixel format device and transmitter；
The power supply restarts controller, for controlling the frame buffer and the configuration data according to power supply Restart Signal
Data in register empty, and control the controllable switch according to the power supply Restart Signal and be connected；
The configuration data register, for being downloaded by the pilot controller after controllable switch conducting
Configuration data；It is also used to after the self refresh signal of sequence controller is opened, configuration data is obtained by the accessory channel
Modification information modifies to the configuration data in the configuration data register according to the configuration data modification information；
The recording controller, for the self refresh signal of sequence controller unlatching after, according to the accessory channel
Received data selection instruction or the configuration data for reading the configuration data register, by the received image in the main channel
Data are transferred to the pixel format device by the frame buffer；
The pixel format device is cut for the carry out width visual angle after the unlatching of the self refresh signal of sequence controller
When changing, according to the control reset signal of sequence controller, sequence controller code is downloaded by the pilot controller, and by institute
State frame buffer transmission image data handled after the display panel be transferred to by the transmitter shown.
Further, the power supply restarts controller, is also used to after the power supply Restart Signal is closed, described in control
Controllable switch disconnects.
Further, the recording controller is also used to before the self refresh signal of sequence controller is opened, will be described
The received image data in main channel is transferred to the pixel format device.
Further, the receiver is embedded display interface receiver.
Further, described device further includes code register；
The configuration data register, for after controllable switch conducting, by the pilot controller from institute
State download configuration data in code register；
The pixel format device is cut for the carry out width visual angle after the unlatching of the self refresh signal of sequence controller
When changing, according to the control reset signal of sequence controller, when being downloaded from the code register by the pilot controller
Sequence controller code.
Sequence controller and liquid crystal display device provided in an embodiment of the present invention, the sequence controller include that power supply restarts control
Device processed, configuration data register, pilot controller, is connected between configuration data register and pilot controller frame buffer
Controllable switch, receiver main channel and accessory channel, recording controller, pixel format device and transmitter.Wherein, power supply
Controller is restarted using sequence controller power supply power supply, and uncontrolled reset signal influences；Configuration data register is powering on wink
Between disconnected with code register after download configuration data, no longer downloaded from code register again as long as long as powering off, not by
Controlling reset signal influences；After powering on, the configuration data of configuration data register, while data control can be modified by accessory channel
Device processed directly can select frame buffer by the configuration data of accessory channel control or configuration data register；Control resetting letter
Number reset operation is carried out to sequence controller, only part code refreshed, and the configuration data of configuration data register is no longer
Refresh.
Detailed description of the invention
Fig. 1 is the sequence controller structural schematic diagram of the embodiment of the present invention；
Fig. 2 is sequence controller the first working state structure schematic diagram of the embodiment of the present invention；
Fig. 3 is sequence controller the second working state structure schematic diagram of the embodiment of the present invention；
Fig. 4 is the sequence controller third working state structure schematic diagram of the embodiment of the present invention.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
The each embodiment of the present invention is realized in description with reference to the drawings.In subsequent description, using for indicating
The suffix of such as " module ", " component " or " unit " of element is only for being conducive to explanation of the invention, and there is no special for itself
Fixed meaning.
It will be further appreciated that the term "and/or" used in description of the invention and the appended claims is
Refer to any combination and all possible combinations of one or more of associated item listed, and including these combinations.
The description for being related to " first ", " second " etc. in the present invention is used for description purposes only, and should not be understood as instruction or
It implies its relative importance or implicitly indicates the quantity of indicated technical characteristic." first ", " second " are defined as a result,
Feature can explicitly or implicitly include at least one of the features.In addition, the technical solution between each embodiment can phase
Mutually combine, but must be based on can be realized by those of ordinary skill in the art, when the combination of technical solution occur it is mutual
Contradiction or cannot achieve when, will be understood that the combination of this technical solution is not present, also not the present invention claims protection scope it
It is interior.
As shown in Figure 1, first embodiment of the invention provides a kind of sequence controller, which includes that power supply is restarted
Controller, frame buffer, configuration data register, pilot controller, be connected to configuration data register and pilot controller it
Between controllable switch T1, receiver main channel and accessory channel, recording controller, pixel format device and transmitter.
In the present embodiment, receiver is embedded display interface (eDP, Embedded DisplayPort) receiver.
Power supply restarts controller, for controlling the number in frame buffer and configuration data register according to power supply Restart Signal
Controllable switch T1 conducting is controlled according to emptying, and according to the power supply Restart Signal.
In the present embodiment, power supply restarts controller, is also used to after power supply Restart Signal is closed, and controls controllable switch
T1 is disconnected.
Configuration data register, for passing through pilot controller download configuration data after controllable switch T1 conducting；Also
For configuration data modification information being obtained by accessory channel, according to this after the unlatching of the self refresh signal of sequence controller
Configuration data modification information modifies to the configuration data in configuration data register.
Recording controller, for the self refresh signal of sequence controller unlatching after, according to the received number of accessory channel
According to selection instruction or the configuration data of reading configuration data register, the received image data in main channel is passed through into frame buffer
It is transferred to pixel format device.
In the present embodiment, recording controller is also used to before the self refresh signal of sequence controller is opened, will be main logical
The received image data in road is transferred to pixel format device.
Pixel format device, for the carry out width view angle switch after the unlatching of the self refresh signal of sequence controller
When, according to the control reset signal of sequence controller, sequence controller code is downloaded by pilot controller, and by frame buffer
The image data of transmission is transferred to display panel by transmitter after being handled and is shown.
For a better understanding of the present invention, it is connect below with embedded display interface (eDP, Embedded DisplayPort)
For receiving device, it is illustrated in conjunction with Fig. 1-Fig. 4:
1) it, refer again to shown in Fig. 1, restart moment (low level is to during high level rising edge) in power supply, power supply is restarted
Controller controls the data in frame buffer and configuration data register according to power supply Restart Signal and empties, and according to the power supply weight
Open signal control controllable switch T1 conducting.The data in frame buffer and configuration data register at this time are all 00.
2), as shown in Fig. 2, configuration data register is after controllable switch T1 conducting, matched by pilot controller downloading
Set data.The configuration data of configuration data register can be as follows shown in table:
| 00 | 00 | 00 | 00 | 00 | 00 |
| 00 | 00 | 00 | 00 | 00 | 00 |
| 00 | 11 | 00 | 00 | 00 | 00 |
| 00 | 11 | 88 | 00 | 00 | 00 |
| 00 | 00 | 00 | 00 | 11 | 00 |
When power supply Restart Signal is high level, power supply is restarted controller control controllable switch T1 and is disconnected.As long as power supply weight
Opening signal always is high level just no longer by pilot controller download configuration data.I.e. uncontrolled reset signal influences.
3), as shown in figure 3, the self refresh signal (Panel Self Refresh, PSR) in sequence controller opens it
Afterwards, configuration data modification information is obtained by accessory channel, according to the configuration data modification information in configuration data register
Configuration data modify.Shown in the modified following table of configuration data:
| 00 | 00 | 00 | 00 | 01 | 01 |
| 01 | 01 | 00 | 00 | 00 | 00 |
| 00 | 11 | 00 | 00 | 05 | 00 |
| 00 | 11 | 88 | 00 | 00 | 00 |
| 00 | 00 | 00 | 00 | 11 | 00 |
At this moment, recording controller according to the received data selection instruction of accessory channel or reads configuration data register
The received image data in main channel is transferred to pixel format device by frame buffer by configuration data.Following table is slow for frame
Rush the data of device:
| 00 | 01 | 02 | 40 | 80 | FF | AD | 78 | CC | 65 | 66 | 88 |
| 98 | 88 | 03 | 90 | C0 | F0 | A8 | 80 | 9F | 85 | 65 | 26 |
| 30 | 25 | 08 | 90 | 90 | 5D | 8B | A6 | 88 | 32 | 78 | 30 |
| 32 | 89 | A0 | 45 | A0 | B0 | 0E | FF | 08 | 31 | 96 | 65 |
| 28 | 30 | 56 | 55 | 0C | 5C | FB | E0 | 04 | 33 | A3 | E4 |
4), as shown in figure 4, after the self refresh signal (Panel Self Refresh, PSR) of sequence controller is opened
Carry out width view angle switch when, according to the control reset signal (as shown in the square wave in figure) of sequence controller, pass through auxiliary
Controller downloads sequence controller code from code register, and after the image data that frame buffer transmits is handled
Display panel is transferred to by transmitter to be shown.At this moment, only part code is refreshed, and configuration data register is matched
Data are set no longer to refresh.
Sequence controller provided in an embodiment of the present invention, the sequence controller include power supply restart controller, frame buffer,
Configuration data register, the controllable switch being connected between configuration data register and pilot controller, receives pilot controller
The main channel of device and accessory channel, recording controller, pixel format device and transmitter.Wherein, power supply restarts controller use
Sequence controller power supply power supply, uncontrolled reset signal influence；Configuration data register is in powered on moment download configuration data
It is disconnected afterwards with code register, it is uncontrolled heavy as long as the no longer download configuration data from code register again as long as powering off
Set effect of signals；After powering on, the configuration data of configuration data register can be modified by accessory channel, while recording controller can
Frame buffer is directly selected by the configuration data of accessory channel control or configuration data register；Control reset signal clock synchronization
Sequence controller carries out reset operation, and only part code is refreshed, and the configuration data of configuration data register no longer refreshes.
Second embodiment of the invention provides a kind of liquid crystal display device, which includes display panel and timing
Controller；Sequence controller can refer to first embodiment, and therefore not to repeat here.
In the present embodiment, which includes code register；
Configuration data register is used for after controllable switch T1 conducting, through pilot controller from code register
Download configuration data；
Pixel format device, for the carry out width view angle switch after the unlatching of the self refresh signal of sequence controller
When, according to the control reset signal of sequence controller, in sequence controller generation, is downloaded from code register by pilot controller
Code.
Liquid crystal display device provided in an embodiment of the present invention, power supply restart controller and use sequence controller power supply power supply,
Uncontrolled reset signal influences；Configuration data register disconnects after powered on moment download configuration data with code register,
As long as no longer the download configuration data from code register, uncontrolled reset signal influence again as long as powering off；It, can after powering on
The configuration data of configuration data register is modified by accessory channel, while recording controller can be controlled directly by accessory channel
Or the configuration data of configuration data register selects frame buffer；Control reset signal carries out resetting behaviour to sequence controller
Make, only part code is refreshed, and the configuration data of configuration data register no longer refreshes.
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or the device that include a series of elements not only include those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or device institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including being somebody's turn to do
There is also other identical elements in the process, method of element, article or device.
The above is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (9)
1. a kind of sequence controller, the sequence controller includes that power supply restarts controller, frame buffer, configuration data deposit
Device, pilot controller, the controllable switch that is connected between the configuration data register and the pilot controller, receiver
Main channel and accessory channel, recording controller, pixel format device and transmitter；
The power supply restarts controller, for controlling the frame buffer and configuration data deposit according to power supply Restart Signal
Data in device empty, and control the controllable switch according to the power supply Restart Signal and be connected；
The configuration data register, for passing through the pilot controller download configuration after controllable switch conducting
Data；It is also used to after the self refresh signal of sequence controller is opened, configuration data modification is obtained by the accessory channel
Information modifies to the configuration data in the configuration data register according to the configuration data modification information；
The recording controller, for being received according to the accessory channel after the unlatching of the self refresh signal of sequence controller
Data selection instruction or read the configuration data of the configuration data register, by the received image data in the main channel
The pixel format device is transferred to by the frame buffer；
The pixel format device, for the carry out width view angle switch after the unlatching of the self refresh signal of sequence controller
When, according to the control reset signal of sequence controller, sequence controller code is downloaded by the pilot controller, and will be described
The image data of frame buffer transmission is transferred to display panel by the transmitter after being handled and is shown.
2. a kind of sequence controller according to claim 1, which is characterized in that the power supply restarts controller, is also used to
After power supply Restart Signal closing, controls the controllable switch and disconnect.
3. a kind of sequence controller according to claim 1, which is characterized in that the recording controller, be also used to when
Before the self refresh signal of sequence controller is opened, the received image data in the main channel is transferred to the pixel format
Device.
4. a kind of sequence controller according to claim 1, which is characterized in that the receiver is embedded display interface
Receiver.
5. a kind of liquid crystal display device, the liquid crystal display device includes display panel and sequence controller；It is characterized in that, institute
State sequence controller include power supply restart controller, frame buffer, configuration data register, pilot controller, be connected to it is described
The main channel of controllable switch, receiver between configuration data register and the pilot controller and accessory channel, data control
Device, pixel format device and transmitter processed；
The power supply restarts controller, for controlling the frame buffer and configuration data deposit according to power supply Restart Signal
Data in device empty, and control the controllable switch according to the power supply Restart Signal and be connected；
The configuration data register, for passing through the pilot controller download configuration after controllable switch conducting
Data；It is also used to after the self refresh signal of sequence controller is opened, configuration data modification is obtained by the accessory channel
Information modifies to the configuration data in the configuration data register according to the configuration data modification information；
The recording controller, for being received according to the accessory channel after the unlatching of the self refresh signal of sequence controller
Data selection instruction or read the configuration data of the configuration data register, by the received image data in the main channel
The pixel format device is transferred to by the frame buffer；
The pixel format device, for the carry out width view angle switch after the unlatching of the self refresh signal of sequence controller
When, according to the control reset signal of sequence controller, sequence controller code is downloaded by the pilot controller, and will be described
The image data of frame buffer transmission is transferred to the display panel by the transmitter after being handled and is shown.
6. a kind of liquid crystal display device according to claim 5, which is characterized in that the power supply restarts controller, also uses
In after power supply Restart Signal closing, controls the controllable switch and disconnect.
7. a kind of liquid crystal display device according to claim 5, which is characterized in that the recording controller is also used to
Before the self refresh signal of sequence controller is opened, the received image data in the main channel is transferred to the pixel format
Device.
8. a kind of liquid crystal display device according to claim 5, which is characterized in that the receiver is that embedded display connects
Mouth receiver.
9. a kind of liquid crystal display device according to claim 5, which is characterized in that the liquid crystal display device further includes generation
Code memory；
The configuration data register, for after controllable switch conducting, by the pilot controller from the generation
Download configuration data in Code memory；
The pixel format device is cut for the carry out width visual angle after the unlatching of the self refresh signal of the sequence controller
When changing, according to the control reset signal of the sequence controller, through the pilot controller under in the code register
Carry sequence controller code.
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| 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 |
| CN107993621B (en) * | 2017-11-28 | 2020-09-01 | 昆山龙腾光电股份有限公司 | Wide-narrow viewing angle switching device and switching method |
| CN108459862B (en) * | 2018-05-16 | 2022-02-15 | 昆山龙腾光电股份有限公司 | Code burning method and liquid crystal display module |
| CN110175460B (en) * | 2019-05-05 | 2021-03-23 | Tcl华星光电技术有限公司 | Image processing apparatus and method for configuring image processing apparatus |
| CN115101025B (en) * | 2022-07-13 | 2023-03-24 | 珠海昇生微电子有限责任公司 | LCD control circuit supporting virtual frame buffering and control method thereof |
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| CN103135051B (en) * | 2011-12-02 | 2017-02-08 | 宁波中嘉科贸有限公司 | Test fixture for power source restarting |
| US9196216B2 (en) * | 2011-12-07 | 2015-11-24 | Parade Technologies, Ltd. | Frame buffer management and self-refresh control in a self-refresh display system |
| TWI570680B (en) * | 2012-09-13 | 2017-02-11 | 聯詠科技股份有限公司 | Source driver and method for updating a gamma curve |
| US9436970B2 (en) * | 2013-03-15 | 2016-09-06 | Google Technology Holdings LLC | Display co-processing |
| CN104486257A (en) * | 2014-12-09 | 2015-04-01 | 中国航空工业集团公司第六三一研究所 | Graded sending dispatching circuit structure based on AFDX network switch chip |
| KR102446880B1 (en) * | 2015-08-17 | 2022-09-26 | 삼성디스플레이 주식회사 | Display apparatus and method of driving the same |
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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. |