CN109597704A - The guard method and its display device of data in display panel - Google Patents
The guard method and its display device of data in display panel Download PDFInfo
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- CN109597704A CN109597704A CN201811636929.8A CN201811636929A CN109597704A CN 109597704 A CN109597704 A CN 109597704A CN 201811636929 A CN201811636929 A CN 201811636929A CN 109597704 A CN109597704 A CN 109597704A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/0703—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation
- G06F11/0706—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation the processing taking place on a specific hardware platform or in a specific software environment
- G06F11/073—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation the processing taking place on a specific hardware platform or in a specific software environment in a memory management context, e.g. virtual memory or cache management
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Abstract
The application is the guard method and its display device of data in a kind of display panel, and display device includes: a display panel；One storage unit is arranged in the driving plate in the display panel, for storing the data of a timing control unit；The timing control unit is arranged in the display panel, comprising: a signal detection unit detects the state of a write-protect signal；One microprocessing unit determines request or stops the sending action that the storage unit carries out the data according to the state of the write-protect signal.
Description
Technical field
This application involves field of display technology, and in particular to the guard method of data and its display dress in a kind of display panel
It sets.
Background technique
Liquid crystal display is one of the flat-panel monitor being most widely used, and including with pixel electrode, public
Two substrates of electrode etc. and the liquid crystal layer being plugged between two substrates.Liquid crystal display passes through by being applied to electrode
The electric field that voltage generates determines the orientation of the liquid crystal molecule of liquid crystal layer and controls the polarization of incident light to show image.Liquid crystal display
Device is conducive to show moving image and has high contrast, thus substitutes existing cathode-ray tube, and be differently used as and move
Display device (notebook monitor etc.), computer monitor and the TV etc. of dynamic terminal.
In the driving plate of liquid crystal display panel, there is a band Electrically Erasable Programmable Read-Only Memory (Electrically
Erasable Programmable read only memory, EEPROM), it is read during system boot process from system
Type information (for example, resolution ratio and timing), sends liquid crystal display drive circuit unit for the type information.The EEPROM is one
The readable and writable memory of kind, to store the software code setting of timing controller (Timming Controller-TCON).
But in the actual production process of factory, it is often easy to happen the thing that the TCON code stored in EEPROM is written over.?
Just when booting, internal microprocessing unit (Micro Controller Unit, the MCU) meeting of timing controller (TCON)
It goes to read the TCON stored inside EEPROM by I2C (Inter-Integrated Circuit, built-in integrated circuit) agreement
Code completes the initializing set of TCON.WP (Write Protect) is the write-protect signal of EEPROM, is H (high under normality
Current potential), i.e., write-protect state will be under normal condition.But be easier now problem appear to is that, due to producing
It may cause WP that can also be disabled, and I2C protocol communication is also abnormal, then just having can due to wire rod or other interference in journey
Malfunction can be will appear and the TCON code stored inside EEPROM is caused to be written over, and there is no mechanisms for correcting errors now, then
Such case can not be just taken precautions against, and then will cause display picture exception, is made mistakes frequently.
Summary of the invention
The shortcomings that for the above-mentioned prior art, the application provide the guard method and its display of data in a kind of display panel
Device increases detecting of the timing control unit to write-protect signal, when detecting write-protect Signal Fail, timing control unit
It does not go to read TCON code, it is possible thereby to which the data in storage unit is avoided to be written over, and then avoid shown by display panel
The generation of picture abnormal conditions.
The purpose of the application with solve its technical problem and can be used following technical scheme to realize.
A kind of display device proposed according to the application a, comprising: display panel；One storage unit, setting is described aobvious
Show in the driving plate in panel, for storing the data of a timing control unit；The timing control unit is arranged described
In display panel, comprising: a signal detection unit detects the state of a write-protect signal；One microprocessing unit is write according to described in
The state of signal is protected, determine request or stops the sending action that the storage unit carries out the data.
Wherein, the microprocessing unit, further includes: when sending a reading instruction, enable signal detection unit detecting institute
State the state of write-protect signal；When the state of the write-protect signal is write-protect starting state, the storage unit is requested
Carry out the sending action of the data.
Wherein, the microprocessing unit, further includes: receive the data that the storage unit is sent, be used for output
Drive the various control signals of the display panel.
Wherein, the microprocessing unit, further includes: when sending a reading instruction, enable signal detection unit detecting institute
State the state of write-protect signal.
Wherein, the microprocessing unit, further includes: when the write-protect signal state be write-protect failure state, stop
Only send the reading instruction.
Wherein, the storage unit, further includes: the timing control is connected by serial communication unit (such as I2C bus)
Unit processed.
Wherein, the storage unit, further includes: when receiving the request instruction of the microprocessing unit, by described
The data are sent to the timing control unit by serial communication unit.
Wherein, the microprocessing unit, further includes: when the write-protect signal that the signal detection unit detects
When state is write-protect starting state, forbid rewriting the data in the storage unit.
Wherein, the microprocessing unit, further includes: when the write-protect signal that the signal detection unit detects
When state is write-protect failure state, forbid rewriting the data in the storage unit.
Wherein, further includes: after the storage unit is completed or stops the sending action of the data, the serial communication
Unit discharges the state of the transmission line of the data.
The purpose of the application also can be used following technical measures and further realize with its technical problem is solved.
The guard method of data in a kind of display panel that the application proposes includes the following steps: to provide a display panel
An and storage unit, wherein the storage unit is arranged in the driving plate in the display panel, for storing a timing
The data of control unit；By the signal detection unit in the timing control unit, the state of a write-protect signal is detected；
And by the microprocessing unit in the timing control unit, according to the state of the write-protect signal, determine request or
Stop the sending action that the storage unit carries out the data.
Wherein, further includes: when the microprocessing unit, which sends one, reads instruction, enable signal detection unit detecting institute
State the state of write-protect signal.
Wherein, further includes: when the state of the write-protect signal be write-protect starting state when, the microprocessing unit according to
According to the write-protect starting state, the storage unit is requested to carry out the sending action of the data.
Wherein, further includes: when the microprocessing unit receives the data that the storage unit is sent, be used for output
Drive the various control signals of the display panel.
Wherein, further includes: when the microprocessing unit, which sends one, reads instruction, enable signal detection unit detecting institute
State the state of write-protect signal.
Wherein, further includes: when the state of the write-protect signal is write-protect failure state, according to write-protect failure
State stops sending the reading instruction.
Wherein, further includes: when the state for the write-protect signal that the signal detection unit detects opens for write-protect
When dynamic state, forbid rewriting the data in the storage unit.
Wherein, further includes: when the state for the write-protect signal that the signal detection unit detects is write-protect mistake
When effect state, forbid rewriting the data in the storage unit.
Wherein, further includes: after carrying out or stopping the sending action of the data of the storage unit, by serially leading to
Letter unit discharges the state of the transmission line of the data.
A kind of display device of another object that the application proposes a, comprising: display panel；One storage unit is arranged in institute
It states in the driving plate in display panel, for storing the data of a timing control unit；The timing control unit, setting exist
In the display panel, comprising: a signal detection unit detects the state of a write-protect signal；One microprocessing unit, according to institute
The state of write-protect signal is stated, determine request or stops the sending action that the storage unit carries out the data；Wherein, described
Storage unit connects the timing control unit by serial communication unit；The storage unit is that erasable programmable type is read-only
Memory EEPROM.
By above technical scheme and measure, the application provides the guard method and its display of data in a kind of display panel
Device increases detecting of the timing control unit to write-protect signal, the state according to write-protect signal, it is determined whether request storage
Unit carries out the sending action of the data；When detecting write-protect Signal Fail, timing control unit just sends stopping letter
Number, it does not go to read timing control unit code, it is possible thereby to which TCON data in storage unit is avoided to be written over, and then avoids showing
The generation of picture abnormal conditions shown by panel improves production yield.
Detailed description of the invention
Fig. 1 is the communication construction schematic diagram of timing control unit and storage unit in exemplary display panel.
Fig. 2A is a kind of configuration diagram for display device that the application proposes.
Fig. 2 B is the configuration diagram for another display device that the application proposes.
Fig. 3 is the flow diagram of the guard method of data in a kind of display panel of the application proposition.
Fig. 4 is the flow diagram of the guard method of data in another display panel of the application proposition.
Specific embodiment
Further to illustrate, the guard method of data and its display device are to reach in a kind of display panel of the application
Technological means that predetermined application purpose is taken and its effect of reach, with reference to the accompanying drawings and embodiments, to according to the application
The specific embodiment of the guard method of data and its system, structure, feature and its effect in the display panel of proposition do one in detail
It describes in detail bright.
Fig. 1 is please referred to, is that timing control unit and the communication construction of storage unit are illustrated in exemplary display panel
Figure.
In Fig. 1, a display panel 100；The driving plate in the display panel 100 is arranged in one storage unit 110
On, for storing the data 111 of a timing control unit 120；The timing control unit 120 is arranged in the display panel
In 100, including a microprocessing unit 121；MCU microprocessing unit when rigid booting, inside timing control unit 120
121, it can go to read the timing control unit 120 stored inside storage unit 110 by serial communication unit (such as I2C bus)
Data 111, complete timing control unit 120 initializing set.Since WP is the write-protect signal 130 of storage unit 110,
It is H under normality, i.e., will be in write-protect state under normal condition；But be easier now problem appear to is that, due to life
It may cause write-protect signal 130 that can also be disabled, and I2C protocol communication is not yet due to wire rod or other interference during production
Normally, then being possible to will appear malfunction and lead to the data of timing control unit 120 stored inside storage unit 110
111 are written over；When MCU microprocessing unit 121 inside timing control unit 120 reads the data after being written over, it is possible to
It will cause read error, the initializing set of timing control unit 120 cannot be completed；And then cause correctly export for driving
The various control signals for moving the display panel 100 cause display picture abnormal, make mistakes frequently；And there is no error correction machines now
System, then can not just take precautions against such case.
A to Fig. 2 B referring to figure 2., for the configuration diagram for the display device that the application proposes.
In fig. 2, a kind of display device that the application proposes, including；One display panel 100；One storage unit 110, if
It sets in the driving plate in the display panel 100, for storing the data 111 of a timing control unit 120；The timing
Control unit 120 is arranged in the display panel 100, comprising: a signal detection unit 122 detects a write-protect signal
130 state；One microprocessing unit 121 determines request or stops the storage according to the state of the write-protect signal 130
Unit 110 carries out the sending action of the data 112；Wherein, the storage unit 110 and the timing control unit 120 are logical
It crosses same port and obtains the write-protect signal 130.
In fig. 2b, another display device that the application proposes, including；One display panel 100；One storage unit 110,
It is arranged in the driving plate in the display panel 100, for storing the data 111 of a timing control unit 120；When described
Sequence control unit 120 is arranged in the display panel 100, comprising: a signal detection unit 122 detects a write-protect signal
130 state；One microprocessing unit 121 determines request or stops the storage according to the state of the write-protect signal 130
Unit 110 carries out the sending action of the data 112；Wherein, the storage unit 110 and the timing control unit 120 are logical
It crosses different port and obtains the write-protect signal 130.
It in one embodiment, further include increasing detecting of the timing control unit 120 to write-protect signal 130, write-protect letter
Numbers 130 be first of the outpost whether storage unit 110 can be written over；If write-protect signal 130 starts, i.e. storage unit
110 are constantly in write-protect state, then no matter how I2C signal changes, will not result in the data of 110 the inside of storage unit
111 are written over.
Specifically, for storage unit 110, when write-protect signal 130 is H, write-protect starting；Write-protect signal
130 be L when, write-protect failure.So when rigid booting, signal detection unit 122 in timing control unit 120, meeting
The state of write-protect signal 130 is detected first.When the state for detecting write-protect signal 130 is write-protect failure state, when
MCU microprocessing unit 121 in sequence control unit 120 does not just go the data 111 for reading 110 the inside of storage unit.Timing control
Source of the unit 120 as I2C signal, if timing control unit 120 does not export I2C signal, even if there is wire rod in rear end
Or other interference, substantial role will not be generated to I2C signal, at this moment would not also occur what storage unit 110 was written over
Situation.When turning back on, as long as the signal level of write-protect signal 130 restores normal, then timing control unit 120 is still
It can so go to properly read data 111, to export the various control signals for driving the display panel, to correctly show
Show picture.
In one embodiment, further includes: band electrically erasable programmable read-only memory (EEPROM) etc. is used as described deposit
Storage unit 110.EEPROM is a kind of storage device of storing data being closed, and passes through serial communication unit (example
Such as, 12C bus) it executes and the data transmission and reception of timing control unit 120.12C be a kind of two-wire serial communication interface with
And a kind of data communications method between integrated circuit being made of serial data line (SDA) and serial time clock line (SCL).
In one embodiment, the microprocessing unit 121, further includes: when sending a reading instruction, enable the signal detection
Unit 122 detects the state of the write-protect signal 130；When the state of the write-protect signal 130 is write-protect starting state
When, request the storage unit 110 to carry out the sending action of the data 111；And receive what the storage unit 110 was sent
The data 111, to export the various control signals for driving the display panel 100.
In one embodiment, the microprocessing unit 121, further includes: when sending a reading instruction, enable the signal detection
Unit 122 detects the state of the write-protect signal 130；When the write-protect signal 130 state be write-protect failure state,
Stop sending the reading instruction.
In one embodiment, the storage unit 110, further includes: the timing control is connected by serial communication unit
Unit 120；When receiving the request instruction of the microprocessing unit 121, by the serial communication unit by the data
111 are sent to the timing control unit 120.
In one embodiment, the microprocessing unit 121, further includes: when the institute that the signal detection unit 122 detects
When the state for stating write-protect signal 130 is write-protect starting or failure state, forbid rewriting institute in the storage unit 110
State data 111.
In one embodiment, described serial logical after the storage unit is completed or stops the sending action of the data
Letter unit discharges the state of the transmission line of the data.
In some embodiments, the state for discharging the transmission line of the data includes but is not limited to the serial communication list
Member includes that route carries out initializing set to itself or it.
In one embodiment, further includes: display panel 100 is described as follows by taking liquid crystal display panel as an example: liquid crystal
Showing panel has that matrix type that multiple gating lines and multiple data lines obtain is arranged in vertical direction each other by edge
Pixel region.Each of these pixel regions include thin film transistor (TFT) (TFT) and the liquid crystal capacitor for being connected to the TFT
(Clc).Liquid crystal capacitor (Clc) is public between the pixel electrode and liquid crystal by being connected to the pixel electrode of the TFT and plugging
Electrode is constituted.The TFT provides data voltage to pixel from each data line in response to the scanning pulse from each gating line
Electrode.Liquid crystal capacitor (Clc) is filled with the reference common electrical for providing to the data voltage of pixel electrode and offer and arriving public electrode
Potential difference (difference voltage) between pressure, and according to the orientation of potential difference change liquid crystal molecule, to control
Light transmission processed.In addition, reservior capacitor (Cst) is connected in parallel with liquid crystal capacitor (Clc), to keep in liquid crystal capacitor
The voltage being filled with, until next data-signal is provided.
Timing control unit 120 reads the data 111 stored in storage unit 110, with output for operating DC-DC conversion
The operation signal of device and various control signals for operating liquid crystal display panel.Here, timing control unit 120 will input/
Output control clock CLK is input to storage unit 110, to receive the activation bit and image data modulation letter of liquid crystal display panel
Breath, and based on the activation bit and image data modulation intelligence control gate driver and data driver；Data-driven
Device receives the corrected vision signal from timing control unit 120, and to be converted into corrected data-signal, (it is
Analog signal), and provide the corrected data-signal to the corresponding data line of liquid crystal display panel.
Storage unit 110 stores the size of liquid crystal display panel, conversion of resolution information, image data modulation intelligence, drives
Dynamic frequency and the driving timing information of timing control unit etc..In addition, being deposited when input/output control clock is entered
Storage unit provides the activation bit stored, image data modulation intelligence etc. to timing control unit.
Referring to figure 3., the flow diagram of the guard method of data in a kind of display panel proposed for the application.Packet
Include following steps:
Step S310: a display panel 100 and a storage unit 110 are provided, wherein the setting of storage unit 110 exists
In a driving plate in the display panel 100, for storing the data of a timing control unit 120；
Step S320: by the signal detection unit 122 in the timing control unit 120, write-protect letter is detected
Number state；
Step S330: by the microprocessing unit 121 in the timing control unit 120, believe according to the write-protect
Number state, determine request or stop the sending action that the storage unit 110 carries out the data.
In one embodiment, further includes: when the microprocessing unit 121, which sends one, reads instruction, the signal is enabled to detect
Survey the state that unit 130 detects the write-protect signal；And when the state of the write-protect signal is write-protect starting state,
The microprocessing unit 121 requests the storage unit 110 to carry out the transmission of the data according to the write-protect starting state
Movement；And the microprocessing unit 121 receives the data that the storage unit 110 is sent, to export for driving
State the various control signals of display panel 100.
In one embodiment, further includes: when the microprocessing unit 121, which sends one, reads instruction, the signal is enabled to detect
Survey the state that unit 130 detects the write-protect signal；When the state of the write-protect signal is write-protect failure state, foundation
The write-protect failure state stops sending the reading instruction, to realize the purpose for avoiding data from being written over.
In one embodiment, further includes: when the state for the write-protect signal that the signal detection unit 130 detects
When for write-protect starting or failure state, forbid rewriting the data in the storage unit 110.
In one embodiment, after carrying out or stopping the sending action of the data of the storage unit 110, pass through string
Row communication unit discharges the state of the transmission line of the data.
Referring to figure 4., the flow diagram of the guard method of data in another display panel proposed for the application.
Include the following steps:
Step S410: timing control unit sends sign on；
Step S420: timing control unit sends memory unit address and read command；
Does is step S430: it high potential that timing control unit, which detects write-protect signal,? if high potential, step is executed
S431A, conversely, thening follow the steps S431B；
Step S431A: storage unit sends answer signal, executes step S450；
Step S431B: timing control unit sends stop signal, executes step S440；
Step S440:I2C bus is released, and continues to execute step S410；
Step S450: timing control unit starts to receive the data in storage unit；
Step S460: timing control unit sends stop signal；
Step S470: storage unit stops sending data, and I2C bus is released, and terminates.
In one embodiment, further includes: display panel can use TN, OCB, VA type TFT LCD panel, but not
It is limited to this.The display panel of display device can be the liquid crystal display panel with curved surface panel.Wherein, display panel can also example
For example OLED display panel, QLED display panel, curved face display panel or other display panels.
The application provides the guard method and its display device of data in a kind of display panel, increases timing control unit pair
The detecting of write-protect signal, the state according to write-protect signal, it is determined whether request storage unit carries out the transmission of the data
Movement；When detecting write-protect Signal Fail, timing control unit just sends stop signal, does not go to read timing control unit
Code it is possible thereby to which TCON data in storage unit is avoided to be written over, and then avoids picture abnormal conditions shown by display panel
Generation, improve production yield.
The above is only embodiments herein, not makes any form of restriction to the application, although originally
Application is disclosed above with embodiment, however is not limited to the application, and any person skilled in the art is not taking off
From within the scope of technical scheme, when the technology contents using the disclosure above make a little change or are modified to equivalent variations
Equivalent embodiment, but all contents without departing from technical scheme, the technical spirit according to the application implemented to above
Any simple modification and equivalent variations and modification made by example, in the range of still falling within technical scheme.
Claims (10)
1. a kind of display device characterized by comprising
One display panel；
One storage unit is arranged in the driving plate in the display panel, for storing the data of a timing control unit；
The timing control unit is arranged in the display panel, comprising:
One signal detection unit detects the state of a write-protect signal；
One microprocessing unit determines request or stops described in the storage unit progress according to the state of the write-protect signal
The sending action of data.
2. display device according to claim 1, which is characterized in that the microprocessing unit, further includes: send one and read
When instruction, the signal detection unit is enabled to detect the state of the write-protect signal；When the state of the write-protect signal is to write
When protecting starting state, the storage unit is requested to carry out the sending action of the data；And receive the storage unit hair
The data sent, to export the various control signals for driving the display panel.
3. display device according to claim 1, which is characterized in that the microprocessing unit, further includes: send one and read
When instruction, the signal detection unit is enabled to detect the state of the write-protect signal；When the state of the write-protect signal is to write
Shielding failure state stops sending the reading instruction.
4. display device according to claim 1, which is characterized in that the storage unit, further includes: pass through serial communication
Unit connects the timing control unit；When receiving the request instruction of the microprocessing unit, pass through the serial communication
The data are sent to the timing control unit by unit.
5. display device according to claim 4, which is characterized in that further include: when the storage unit is completed or is stopped
After the sending action of the data, the serial communication unit discharges the state of the transmission line of the data.
6. the guard method of data in a kind of display panel characterized by comprising
There is provided a display panel and a storage unit, wherein the driving in the display panel is arranged in the storage unit
On plate, for storing the data of a timing control unit；
By the signal detection unit in the timing control unit, the state of a write-protect signal is detected；And
By the microprocessing unit in the timing control unit, according to the state of the write-protect signal, determine request or
Stop the sending action that the storage unit carries out the data.
7. the guard method of data in display panel according to claim 6, which is characterized in that further include: when described micro-
When processing unit sends a reading instruction, the signal detection unit is enabled to detect the state of the write-protect signal；And when described
When the state of write-protect signal is write-protect starting state, the microprocessing unit is according to the write-protect starting state, request
The storage unit carries out the sending action of the data；And the microprocessing unit receives the institute that the storage unit is sent
Data are stated, to export the various control signals for driving the display panel.
8. the guard method of data in display panel according to claim 6, which is characterized in that further include: when described micro-
When processing unit sends a reading instruction, the signal detection unit is enabled to detect the state of the write-protect signal；It is write when described
The state for protecting signal is write-protect failure state, according to the write-protect failure state, stops sending the reading instruction.
9. the guard method of data in display panel according to claim 6, which is characterized in that further include: when carry out or
After the sending action of the data for stopping the storage unit, the transmission line of the data is discharged by serial communication unit
State.
10. a kind of display device characterized by comprising
One display panel；
One storage unit is arranged in the driving plate in the display panel, for storing the data of a timing control unit；
The timing control unit is arranged in the display panel, comprising:
One signal detection unit detects the state of a write-protect signal；
One microprocessing unit determines request or stops described in the storage unit progress according to the state of the write-protect signal
The sending action of data；
Wherein, the storage unit connects the timing control unit by serial communication unit；The storage unit is erasable
Except programmable type read-only memory.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811636929.8A CN109597704A (en) | 2018-12-29 | 2018-12-29 | The guard method and its display device of data in display panel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811636929.8A CN109597704A (en) | 2018-12-29 | 2018-12-29 | The guard method and its display device of data in display panel |
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| CN104751814A (en) * | 2013-12-31 | 2015-07-01 | 乐金显示有限公司 | Memory protection circuit and liquid crystal display device including same |
| CN107526979A (en) * | 2017-08-28 | 2017-12-29 | 惠科股份有限公司 | The guard method of software data and its system in display panel |
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- 2018-12-29 CN CN201811636929.8A patent/CN109597704A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101097315A (en) * | 2006-06-30 | 2008-01-02 | Lg.菲利浦Lcd株式会社 | Dispositif d'affichage a cristaux liquides et son procede de pilotage |
| CN104751814A (en) * | 2013-12-31 | 2015-07-01 | 乐金显示有限公司 | Memory protection circuit and liquid crystal display device including same |
| US20150187427A1 (en) * | 2013-12-31 | 2015-07-02 | Lg Display Co., Ltd. | Memory protection circuit and liquid crystal display including same |
| CN107526979A (en) * | 2017-08-28 | 2017-12-29 | 惠科股份有限公司 | The guard method of software data and its system in display panel |
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Application publication date: 20190409 |