CN113178158A - Display panel driving method, display panel driving device, storage medium, and electronic apparatus - Google Patents
Display panel driving method, display panel driving device, storage medium, and electronic apparatus Download PDFInfo
- Publication number
- CN113178158A CN113178158A CN202110432194.2A CN202110432194A CN113178158A CN 113178158 A CN113178158 A CN 113178158A CN 202110432194 A CN202110432194 A CN 202110432194A CN 113178158 A CN113178158 A CN 113178158A
- Authority
- CN
- China
- Prior art keywords
- driving
- signal
- display panel
- display
- data signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
Abstract
The present disclosure provides a driving method, apparatus, storage medium, and electronic device of a display panel, the method including: transmitting a display data signal to the display panel via the display driving unit; receiving a time sequence signal generated after the display driving unit receives the display data signal; and generating a driving signal based on the timing signal so that the display panel displays the content corresponding to the display data signal under the driving of the driving signal. This is disclosed through after the display data signal reachs display panel through showing drive unit, receives the sequential signal that the display drive unit produced to generate drive signal through sequential signal is reverse, guarantee when drive signal reachs display panel, there must be the display data signal and can carry out input operation, and then guarantee to show the synchronization between data signal and the drive signal, solved the valid data dislocation problem, and guarantee that the display panel current information of follow-up collection is accurate effective.
Description
Technical Field
The present disclosure relates to the field of display technologies, and in particular, to a method and an apparatus for driving a display panel, a storage medium, and an electronic device.
Background
In the production or test process of a display panel (panel), current information of the panel when displaying an image needs to be collected so as to detect the panel function or yield. When the Display panel displays images, Display Data signals (Data) are generated through an MIPI Bridge and a Display Driver IC (digital signal processor) based on a Field Programmable Gate Array (FPGA), and meanwhile, the FPGA also generates a GOA (Gate Driver on Array) signal for acquiring the Data so as to Display the Data. Although the GOA and the Data are generated by the FPGA consent source, the GOA and the Data entering the panel are asynchronous due to different transmission paths between the GOA and the Data, and further the problem of effective Data dislocation occurs, so that partial Data in an image displayed by the panel are invalid, and further the acquired current information is invalid.
Disclosure of Invention
An object of the embodiments of the present disclosure is to provide a method and an apparatus for driving a display panel, a storage medium, and an electronic device, so as to solve the problem of Data misalignment caused by non-synchronization between a GOA and Data in the prior art.
The embodiment of the disclosure adopts the following technical scheme: a method of driving a display panel, comprising: transmitting a display data signal to the display panel via the display driving unit; receiving a time sequence signal generated after the display driving unit receives the display data signal; and generating a driving signal based on the timing signal so that the display panel displays the content corresponding to the display data signal under the driving of the driving signal.
In some embodiments, the timing signal comprises at least: the first timing signal is used for indicating the row refreshing frequency of the display panel.
In some embodiments, the generating a driving signal based on the timing signal comprises: and generating the driving signal based on the triggering condition of the preset level in the first time sequence signal.
In some embodiments, after generating the driving signal based on the timing signal, the method further includes: and acquiring current information of the display panel in the display process.
Embodiments of the present disclosure also provide a driving apparatus of a display panel, including: the output module is used for sending the display data signal to the display panel through the display driving unit; the receiving module is used for receiving a time sequence signal generated after the display driving unit receives the display data signal; and the driving module is used for generating a driving signal based on the time sequence signal so as to enable the display panel to display the content corresponding to the display data signal under the driving of the driving signal.
In some embodiments, the timing signal comprises at least: the first timing signal is used for indicating the row refreshing frequency of the display panel.
In some embodiments, the driving module is specifically configured to: and generating the driving signal based on the triggering condition of the preset level in the first time sequence signal.
In some embodiments, further comprising: and the acquisition module is used for acquiring the current information of the display panel in the display process.
Embodiments of the present disclosure also provide a storage medium having a computer program stored thereon, which, when executed by a processor, performs the steps of the driving method of the display panel described above.
The embodiment of the disclosure also provides an electronic device, which at least comprises the display panel driving device and the display panel.
The beneficial effects of this disclosed embodiment lie in: by receiving the time sequence signal generated by the display driving unit after the display data signal reaches the display panel through the display driving unit and generating the driving signal through the time sequence signal in reverse, the display data signal is ensured to be input and operated when the driving signal reaches the display panel, so that the synchronization between the display data signal and the driving signal is ensured, the problem of effective data dislocation is solved, and the accuracy and effectiveness of the current information of the display panel which is subsequently collected are ensured.
Drawings
In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments described in the present disclosure, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flowchart of a driving method of a display panel according to a first embodiment of the disclosure;
FIG. 2 is a schematic diagram illustrating a connection between a display driving unit and a driving control chip according to a first embodiment of the disclosure;
fig. 3 is another flowchart of a driving method of a display panel according to a first embodiment of the disclosure;
FIG. 4 is a schematic structural diagram of a driving apparatus for a display panel according to a second embodiment of the present disclosure;
fig. 5 is another schematic structural diagram of a driving apparatus of a display panel according to a second embodiment of the disclosure.
Detailed Description
Various aspects and features of the disclosure are described herein with reference to the drawings.
It will be understood that various modifications may be made to the embodiments of the present application. Accordingly, the foregoing description should not be construed as limiting, but merely as exemplifications of embodiments. Other modifications will occur to those skilled in the art within the scope and spirit of the disclosure.
The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the disclosure and, together with a general description of the disclosure given above, and the detailed description of the embodiments given below, serve to explain the principles of the disclosure.
These and other characteristics of the present disclosure will become apparent from the following description of preferred forms of embodiment, given as non-limiting examples, with reference to the attached drawings.
It should also be understood that, although the present disclosure has been described with reference to some specific examples, a person of skill in the art shall certainly be able to achieve many other equivalent forms of the disclosure, having the characteristics as set forth in the claims and hence all coming within the field of protection defined thereby.
The above and other aspects, features and advantages of the present disclosure will become more apparent in view of the following detailed description when taken in conjunction with the accompanying drawings.
Specific embodiments of the present disclosure are described hereinafter with reference to the accompanying drawings; however, it is to be understood that the disclosed embodiments are merely exemplary of the disclosure that may be embodied in various forms. Well-known and/or repeated functions and structures have not been described in detail so as not to obscure the present disclosure with unnecessary or unnecessary detail. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present disclosure in virtually any appropriately detailed structure.
The specification may use the phrases "in one embodiment," "in another embodiment," "in yet another embodiment," or "in other embodiments," which may each refer to one or more of the same or different embodiments in accordance with the disclosure.
In order to solve the problems in the prior art, a first embodiment of the present disclosure provides a driving method for a display panel, which can be implemented by a driving control chip for performing display control on the periphery of the display panel, for example, by an FPGA. The flow chart is shown in fig. 1, and mainly includes steps S101 to S103:
s101, the display data signal is transmitted to the display panel via the display driving unit.
The display data signal is generated by the drive control chip and is sent to the display panel through the display drive unit. In some embodiments, the driving control chip may be an FPGA, the display driving unit may be a DDIC, and an MIPI Bridge and an ARM processor are further connected between the FPGA and the DDIC, where the MIPI Bridge is configured to convert a signal output by the FPGA into a format recognizable by the DDIC, and the ARM is configured to drive the MIPI Bridge, and finally generate the display data signal under a synergistic effect with the FPGA.
And S102, receiving a time sequence signal generated after the display driving unit receives the display data signal.
The display driving unit receives the display data signal and then inputs the display data signal into the display panel, and generates a timing signal based on the display parameter of the display panel, wherein the timing signal is used for representing the refreshing mode of the pixel array in the display panel, and the timing signal at least comprises a first timing signal used for indicating the row refreshing frequency of the display panel, and can further comprise a second timing signal used for indicating the frame refreshing rate of the display panel.
In some embodiments, the timing signal may be determined based on a screen refresh rate of the display panel, for example, when the screen refresh rate is 60 hz, i.e., the number of frames or images displayed by the display panel per second is 60, the second timing signal triggers a high level or a low level every 1/60 seconds, and each high level or low level indicates that an image refresh is performed; if the row refresh rate of the screen is 120 hz, the first timing signal triggers a high level or a low level every 1/120 seconds, and each high level or low level indicates that a corresponding number of pixel rows are refreshed.
In practical implementation, a TE pin of the display driving unit may be connected to the driving control chip, and a timing signal may be output through the TE pin; or as shown in fig. 2, the DDIC has a TE pin and a TE _ H pin, which are respectively used for transmitting the second timing signal and the first timing signal, and both the TE pin and the TE _ H pin are connected to the FPGA, so that the FPGA can receive the second timing signal and the first timing signal at the same time.
In addition, fig. 2 also shows devices or components such as an ADC (analog-to-digital converter), an LS (level conversion circuit), an adapter board, etc., which are all device elements necessary for driving a display panel, and the corresponding functions and usage principles thereof are prior art, and this disclosure is not described.
And S103, generating a driving signal based on the timing signal so that the display panel displays the content corresponding to the display data signal under the driving of the driving signal.
The driving control chip correspondingly generates driving signals with the same frequency based on the time sequence signals after receiving the time sequence signals, when the driving control chip inputs the driving signals into the display panel, the driving signals can control the opening of corresponding pixel rows in the display panel according to the corresponding frequency, and simultaneously, the display content in the display data signals is displayed when the pixel rows are opened based on the display data signals which are input into the display panel in advance.
The embodiment receives the time sequence signal generated by the display driving unit after the display data signal reaches the display panel through the display driving unit, and generates the driving signal through the time sequence signal in reverse, so that the display data signal can be input and operated certainly when the driving signal reaches the display panel, further the synchronization between the display data signal and the driving signal is ensured, and the problem of effective data dislocation is solved.
In some embodiments, when the timing signal includes the first timing signal, the corresponding driving signal should be generated according to a trigger condition of a preset level in the first timing signal when the corresponding driving signal is generated, for example, when each high level in the first timing signal triggers, one driving signal for driving is generated correspondingly, and the refreshing of a certain number of pixel rows is realized correspondingly.
In some embodiments, as shown in fig. 3, the driving method of the display panel further includes the following steps on the basis of the steps shown in fig. 1:
and S104, collecting current information of the display panel in the display process.
After the problem that display data and driving signals are not synchronous is solved, current information in the display panel can be further acquired through the driving control chip, so that the accuracy of the current information acquired by the driving control chip is further realized, the generation of invalid data is avoided, and the test or evaluation effect of the display panel is further influenced.
A second embodiment of the present disclosure proposes a driving apparatus of a display panel, which may be actually a driving control chip or other driving control device having a corresponding function. Fig. 4 is a schematic structural diagram of the driving device in this embodiment, which mainly includes: the display device comprises an output module 10, a receiving module 20 and a driving module 30, wherein the output module 10 is used for transmitting a display data signal to a display panel through a display driving unit; the receiving module 20 is coupled to the output module 10, and is configured to receive a timing signal generated after the display driving unit receives the display data signal; the driving module 30 is coupled to the receiving module 20 and configured to generate a driving signal based on the timing signal, so that the display panel displays the content corresponding to the display data signal under the driving of the driving signal.
Specifically, the display data signal is generated by the output module 10 and sent to the display panel through the display driving unit. In some embodiments, an MIPI Bridge and an ARM processor are further connected between the output module 10 and the display driving unit, and are respectively used for realizing that the display data signal is generated under the synergistic action with the driving device.
The display driving unit receives the display data signal and then inputs the display data signal into the display panel, and generates a timing signal based on the display parameter of the display panel, the timing signal is used for representing the refresh mode of the pixel array in the display panel, the timing signal at least comprises a first timing signal used for indicating the row refresh frequency of the display panel, the timing signal may further comprise a second timing signal used for indicating the frame refresh rate of the display panel, and the receiving module 20 receives the timing signal and then the driving unit 30 correspondingly generates the driving signal.
In some embodiments, the timing signal may be determined based on a screen refresh rate of the display panel, for example, when the screen refresh rate is 60 hz, i.e., the number of frames or images displayed by the display panel per second is 60, the second timing signal triggers a high level or a low level every 1/60 seconds, and each high level or low level indicates that an image refresh is performed; if the row refresh rate of the screen is 120 hz, the first timing signal triggers a high level or a low level every 1/120 seconds, and each high level or low level indicates that a corresponding number of pixel rows are refreshed.
In practical implementation, the TE pin of the display driving unit may be connected to the receiving module 20, and the TE pin outputs a timing signal; alternatively, as shown in fig. 2, the DDIC has a TE pin and a TE _ H pin, which are respectively used for transmitting the second timing signal and the first timing signal, and both the TE pin and the TE _ H pin are connected to the receiving module 20, so that the receiving module receives the second timing signal and the first timing signal at the same time.
After the receiving module 20 receives the timing signal, the driving unit 30 correspondingly generates a driving signal with the same frequency based on the timing signal, when the driving unit 30 inputs the driving signal into the display panel, the driving signal controls the opening of the corresponding pixel row in the display panel according to the corresponding frequency, and simultaneously, based on the display data signal input into the display panel in advance, the display content in the display data signal is displayed when the pixel row is opened.
The embodiment receives the time sequence signal generated by the display driving unit after the display data signal reaches the display panel through the display driving unit, and generates the driving signal through the time sequence signal in reverse, so that the display data signal can be input and operated certainly when the driving signal reaches the display panel, further the synchronization between the display data signal and the driving signal is ensured, and the problem of effective data dislocation is solved.
In some embodiments, when the timing signal includes the first timing signal, the driving unit 30 should generate the corresponding driving signal according to a trigger condition of a preset level in the first timing signal when generating the corresponding driving signal, for example, when each high level in the first timing signal triggers, a driving signal for driving is correspondingly generated, and the refreshing of a certain number of pixel rows is correspondingly realized.
Fig. 5 shows another schematic structural diagram of the driving apparatus of the display panel, which is based on fig. 4 and further includes an acquisition module 40. After the problem that display data and driving signals are not synchronous is solved, the acquisition of current information in the display panel is further realized through the acquisition module 40, so that the accuracy of the current information acquired by the driving control chip is further realized, the generation of invalid data is avoided, and the test or evaluation effect of the display panel is further influenced.
A third embodiment of the present disclosure provides a storage medium, which can be installed in a drive control chip of a display panel or other drive processing devices with the same function, and is specifically a computer readable medium, storing a computer program, and when the computer program is executed by a processor, implementing the method provided in any embodiment of the present disclosure, including the following steps S31 to S33:
s31, sending the display data signal to the display panel via the display driving unit;
s32, receiving a time sequence signal generated by the display driving unit after receiving the display data signal;
s33, based on the timing signal, generates a driving signal to make the display panel display the content corresponding to the display data signal under the driving of the driving signal.
Specifically, the timing signal includes at least: the first timing signal is used for indicating the row refreshing frequency of the display panel.
When the computer program is executed by the processor to generate the driving signal based on the timing signal, the computer program is specifically executed by the processor to perform the following steps: and generating a driving signal based on the triggering condition of the preset level in the first timing signal.
After the computer program is executed by the processor to generate the driving signal based on the timing signal, the computer program is further executed by the processor to: and collecting current information of the display panel in the display process.
The embodiment receives the time sequence signal generated by the display driving unit after the display data signal reaches the display panel through the display driving unit, and generates the driving signal through the time sequence signal in reverse, so that the display data signal can be input and operated certainly when the driving signal reaches the display panel, further the synchronization between the display data signal and the driving signal is ensured, and the problem of effective data dislocation is solved.
A fourth embodiment of the present disclosure provides an electronic device, where the electronic device at least includes the display panel and the driving apparatus of the display panel provided in the second embodiment of the present disclosure, and may further include other devices or components that need to implement corresponding functions of the electronic device, and the present embodiment is not limited herein.
While the present disclosure has been described in detail with reference to the embodiments, the present disclosure is not limited to the specific embodiments, and those skilled in the art can make various modifications and alterations based on the concept of the present disclosure, and the modifications and alterations should fall within the scope of the present disclosure as claimed.
Claims (10)
1. A method of driving a display panel, comprising:
transmitting a display data signal to the display panel via the display driving unit;
receiving a time sequence signal generated after the display driving unit receives the display data signal;
and generating a driving signal based on the timing signal so that the display panel displays the content corresponding to the display data signal under the driving of the driving signal.
2. The driving method according to claim 1, wherein the timing signal includes at least:
the first timing signal is used for indicating the row refreshing frequency of the display panel.
3. The driving method according to claim 2, wherein the generating a driving signal based on the timing signal includes:
and generating the driving signal based on the triggering condition of the preset level in the first time sequence signal.
4. The driving method according to any one of claims 1 to 3, further comprising, after the generating a driving signal based on the timing signal:
and acquiring current information of the display panel in the display process.
5. A driving apparatus of a display panel, comprising:
the output module is used for sending the display data signal to the display panel through the display driving unit;
the receiving module is used for receiving a time sequence signal generated after the display driving unit receives the display data signal;
and the driving module is used for generating a driving signal based on the time sequence signal so as to enable the display panel to display the content corresponding to the display data signal under the driving of the driving signal.
6. The driving apparatus according to claim 5, wherein the timing signal at least comprises:
the first timing signal is used for indicating the row refreshing frequency of the display panel.
7. The drive device according to claim 6, wherein the drive module is specifically configured to:
and generating the driving signal based on the triggering condition of the preset level in the first time sequence signal.
8. The drive device according to any one of claims 5 to 7, characterized by further comprising:
and the acquisition module is used for acquiring the current information of the display panel in the display process.
9. A storage medium storing a computer program, wherein the computer program, when executed by a processor, implements the steps of the method for driving a display panel of any one of claims 1 to 4.
10. An electronic device comprising at least the display panel and a driving device of the display panel according to any one of claims 5 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110432194.2A CN113178158A (en) | 2021-04-21 | 2021-04-21 | Display panel driving method, display panel driving device, storage medium, and electronic apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110432194.2A CN113178158A (en) | 2021-04-21 | 2021-04-21 | Display panel driving method, display panel driving device, storage medium, and electronic apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113178158A true CN113178158A (en) | 2021-07-27 |
Family
ID=76924356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110432194.2A Pending CN113178158A (en) | 2021-04-21 | 2021-04-21 | Display panel driving method, display panel driving device, storage medium, and electronic apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113178158A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102194410A (en) * | 2011-06-30 | 2011-09-21 | 郑州朗睿科技有限公司 | Synchronous display drive control method of OLED (organic light-emitting diode) display device |
| US20120139895A1 (en) * | 2010-12-02 | 2012-06-07 | Hyoung Sik Kim | Timing controller and liquid crystal display using the same |
| CN103065595A (en) * | 2012-12-14 | 2013-04-24 | 深圳市华星光电技术有限公司 | Drive method and drive circuit of liquid crystal display panel and liquid crystal display device |
| CN110910828A (en) * | 2018-09-14 | 2020-03-24 | 华为技术有限公司 | Screen module and electronic equipment |
| CN111681585A (en) * | 2020-06-05 | 2020-09-18 | Tcl华星光电技术有限公司 | Display panel's drive circuit and display device |
| CN111968582A (en) * | 2020-01-14 | 2020-11-20 | Oppo广东移动通信有限公司 | Display screen frequency conversion method, DDIC chip, display screen module and terminal |
| CN112331145A (en) * | 2020-11-17 | 2021-02-05 | Oppo广东移动通信有限公司 | Display screen frequency conversion method, DDIC chip, display screen module and terminal |
-
2021
- 2021-04-21 CN CN202110432194.2A patent/CN113178158A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120139895A1 (en) * | 2010-12-02 | 2012-06-07 | Hyoung Sik Kim | Timing controller and liquid crystal display using the same |
| CN102194410A (en) * | 2011-06-30 | 2011-09-21 | 郑州朗睿科技有限公司 | Synchronous display drive control method of OLED (organic light-emitting diode) display device |
| CN103065595A (en) * | 2012-12-14 | 2013-04-24 | 深圳市华星光电技术有限公司 | Drive method and drive circuit of liquid crystal display panel and liquid crystal display device |
| CN110910828A (en) * | 2018-09-14 | 2020-03-24 | 华为技术有限公司 | Screen module and electronic equipment |
| CN111968582A (en) * | 2020-01-14 | 2020-11-20 | Oppo广东移动通信有限公司 | Display screen frequency conversion method, DDIC chip, display screen module and terminal |
| CN111681585A (en) * | 2020-06-05 | 2020-09-18 | Tcl华星光电技术有限公司 | Display panel's drive circuit and display device |
| CN112331145A (en) * | 2020-11-17 | 2021-02-05 | Oppo广东移动通信有限公司 | Display screen frequency conversion method, DDIC chip, display screen module and terminal |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB2135098A (en) | Row conductor drive for matrix display device | |
| CN106910447B (en) | Touch display panel, touch display device and display exception handling method | |
| CN107578754B (en) | Overcurrent protection system and overcurrent protection method of liquid crystal display panel | |
| US7318002B2 (en) | Method and apparatus for automated testing of display signals | |
| CN101009790A (en) | Image processing apparatus capable of communicating with an image source and an image processing method | |
| CN109068132B (en) | VBO display interface test method, device, equipment and storage medium | |
| CN110798682B (en) | Time delay test system | |
| CN110955352A (en) | Touch panel display and control method thereof | |
| MXPA00007414A (en) | Over range image display device and method of monitor. | |
| CN113178158A (en) | Display panel driving method, display panel driving device, storage medium, and electronic apparatus | |
| US20240105101A1 (en) | Display controller and method having automatic data underrun recovery function | |
| US10963091B2 (en) | Touch panel control apparatus, touch panel control method, and input display apparatus | |
| US6778170B1 (en) | Generating high quality images in a display unit without being affected by error conditions in synchronization signals contained in display signals | |
| JP2001134244A (en) | Planar display device and its driving method | |
| CN107295407B (en) | Apparatus for determining the source of a failure of a VBO signal | |
| TWI435090B (en) | Testing structure for shutter glasses, method and system utilizing the same | |
| CN111326095B (en) | White balance adjusting system and method thereof | |
| CN111459442B (en) | Image resolution and frame reduction method and device | |
| JP2004258032A (en) | Measuring instrument and method used therefor | |
| CN111489680B (en) | Signal transmission method and device in display device and electronic equipment | |
| JP2874187B2 (en) | Liquid crystal display device | |
| CN111402770A (en) | Testing device of display device | |
| Yao | Design of edge detection algorithm for image sobel based on FPGA | |
| CN117612463A (en) | Time sequence detection method, system, equipment and medium for vehicle-mounted screen | |
| TWI422226B (en) | Processing apparatus of video signal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |