CN114333613B - Micro-spacing LED display screen module based on field sequential color technology - Google Patents
Micro-spacing LED display screen module based on field sequential color technology Download PDFInfo
- Publication number
- CN114333613B CN114333613B CN202111403217.3A CN202111403217A CN114333613B CN 114333613 B CN114333613 B CN 114333613B CN 202111403217 A CN202111403217 A CN 202111403217A CN 114333613 B CN114333613 B CN 114333613B
- Authority
- CN
- China
- Prior art keywords
- light
- light valve
- valve array
- led
- display screen
- 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.)
- Active
Links
- 238000005516 engineering process Methods 0.000 title claims abstract description 11
- 239000011324 bead Substances 0.000 claims abstract description 18
- 239000013307 optical fiber Substances 0.000 claims abstract description 11
- 239000004973 liquid crystal related substance Substances 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 description 15
- 230000001965 increasing effect Effects 0.000 description 5
- 241000217776 Holocentridae Species 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 239000000758 substrate Substances 0.000 description 3
- 239000003086 colorant Substances 0.000 description 2
- 230000005670 electromagnetic radiation Effects 0.000 description 2
- 230000002688 persistence Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The invention relates to a micro-spacing LED display screen module based on a field sequential color technology, and belongs to the technical field of LED display screens. The light source is an RGB high-power LED lamp bead, and R, G, B can be independently controlled to switch and brightness; the light valve array is correspondingly arranged, so that the output intensity of the light path can be controlled; the light irradiates the rear panel to form a plurality of pixel points after passing through the light valve array, and each pixel point on the rear panel is connected with the pixel point on the front panel by using an optical fiber to transmit light; the control circuit circularly lights the R, G, B lamp core of the LED and simultaneously controls the corresponding switching degree of the light valve; the field frequency is more than or equal to 24 Hz; a lampshade which can uniformly collect the light to the input surface of the light valve array is arranged between the light source and the light valve array. According to the invention, the RGB high-power LED lamp beads are used as the light source, the control circuit can circularly lighten the R, G, B lamp core of the LED, the independent dimming can be realized, the dynamic energy consumption is low, and the structure is simple.
Description
Technical Field
The invention relates to a micro-spacing LED display screen module based on a field sequential color technology, and belongs to the technical field of LED display screens.
Background
Current display technologies mainly include LED screens, OLED screens, LCD screens, projection screens (DLP, LCD, etc.).
The projection screen (or projection splice screen) needs to project light on a white background, has low brightness and poor contrast, and is suitable for darker environments.
The LCD screen has high brightness, black background and high contrast, but with the increase of the size of a single screen, the manufacturing cost per unit area increases sharply, and the LCD screen is only suitable for medium and small screens. The LCD screen is spliced into a large screen, and because the LCD screen uses glass as a carrier and TFT manufacturing processes, the display area must be smaller than the glass carrier, and the necessary structural outer frame, the seamless splicing cannot be achieved visually. Moreover, the LCD screen has low effective utilization rate of light and low energy efficiency because of adopting a color filter film.
The OLED screen emits light actively, the effective utilization rate of light is high, and the substrate can be made of flexible materials, but the OLED screen is also based on a TFT technology and is only suitable for medium and small screens.
The LED screen is formed by assembling a large number of low-power LED lamp beads on a PCB into an array form to form a module, and then splicing the module into a large screen to realize visual seamless splicing. As the pixel pitch continues to shrink below 2mm, the size limitation of the LED lamp bead package housing becomes the bottleneck of the traditional single lamp assembly manufacturing process. The amount of devices per unit area is proportional to the square of the inverse of the pixel pitch, and devices on the order of millions per square meter rapidly deteriorate many performance metrics. Comprising the following steps: 1. the manufacturing scale is increased sharply, and the investment of the production line is increased sharply; 2. the average failure-free time is drastically reduced, and the reliability is seriously deteriorated; 3. the smaller the LED is, the worse the protection capability of the shell of the LED and the module is, the more easily damaged, and the manufacturing, transporting, installing and maintaining costs are greatly increased; 4. the LED module adopts progressive lighting scanning driving, stable images are displayed by utilizing the visual persistence principle, the corresponding PCB area is reduced along with the increase of the density of LEDs, and if the driving circuit is increased in equal proportion, the PCB is difficult to accommodate, so that higher frequency scanning is adopted to reduce the consumption of the driving circuit, but larger electromagnetic radiation is brought, and the electromagnetic pollution is aggravated.
Currently, three new technical routes of LEDs are mainly COB, miniLED, microLED.
COB (Chip On Board), several bare LED chips are packaged on a substrate, and then packaged into a device, and the COB device is used to assemble the display screen, so that the manufacturing scale of the assembly link is reduced. However, other disadvantages of the conventional small-pitch LED screen are not solved, and the defects of surface reflection, poor consistency of ground color, reduced contrast, difficulty in single-point repair and the like are newly generated. Also, there is a bottleneck in the pixel pitch of 1mm or less.
The MiniLED is characterized in that LED chips are arranged at smaller intervals (50 um-200 um) and are arranged on a glass substrate in an array mode, the LED chips are attached to the back face of glass of an LCD display screen and used as a backlight source, regional dimming can be achieved, backlight of the LCD is more uniform, and dynamic energy consumption of the LCD screen can be reduced. At present, the LED display device is not applied to the field of LED large-screen display.
Micro LEDs are LED chips smaller than 50um, are one of the current research hot spots, but the technologies of necessary mass transfer and the like have not been broken through. Micro leds can be used to manufacture medium and small sized displays, and there are also many problems with manufacturing large screen displays.
Disclosure of Invention
The invention aims to provide a micro-spacing LED display screen module based on a field sequential color technology.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the light source of the micro-spacing LED display screen module based on the field sequential color technology is an RGB high-power LED lamp bead, and the R, G, B lamp core can be independently controlled to switch and brightness; the light valve array is correspondingly arranged, so that the output intensity of the light path can be controlled; the light irradiates the rear panel to form a plurality of pixel points after passing through the light valve array, and each pixel point on the rear panel is connected with the pixel point on the front panel by using an optical fiber to transmit light; the control circuit circularly lights the R, G, B lamp core of the LED and simultaneously controls the corresponding switching degree of the light valve; the field frequency is more than or equal to 24 Hz; a lampshade which can uniformly collect the light to the input surface of the light valve array is arranged between the light source and the light valve array.
The technical scheme of the invention is further improved as follows: the light valve array has M rows by N columns of light valves separating the input light into M rows by N columns of output light paths.
The technical scheme of the invention is further improved as follows: the rear panel, the fiber array and the front panel are projection components, and the front panel is larger in size than the rear panel.
The technical scheme of the invention is further improved as follows: LED lamp pearl, lamp shade, light valve array all install on projection part, have the structure of assembling that is used for splice installation between the module on the projection part.
The technical scheme of the invention is further improved as follows: the light valve uses a liquid crystal light valve.
By adopting the technical scheme, the invention has the following technical effects:
the invention can greatly reduce the consumption of LED lamp beads and a driving circuit by using the high-power R, G, B LED single lamp, and the reduction range reaches several orders of magnitude, thereby reducing the manufacturing scale, reducing the investment of a production line and improving the production efficiency. As the number of the light sources is greatly reduced, the probability of faults of the display screen is obviously reduced, the average fault-free time is improved, and the reliability is improved.
According to the invention, the RGB high-power LED lamp beads are used as the light source, the control circuit can circularly lighten the R, G, B lamp cores of the LEDs, the independent dimming can be realized, and the dynamic energy consumption is low.
The invention is provided with the light valve array, and the light path is controlled by the light valve array without controlling large current, thereby reducing electromagnetic radiation and being more environment-friendly.
The number of the LEDs of the light source is reduced, so that the size of an electric part can be reduced, the electric part can be packaged in the airtight shell, the protection level of the shell is improved, and the LED light source is suitable for a more severe application environment.
The rear panel of the invention uses the optical fiber to project the light valve array output light to the front panel of the display screen, thereby enlarging the pixel spacing, increasing the structural strength and enhancing the capability of collision damage resistance. The display screen module can prevent dust, water, condensation and salt fog corrosion.
Drawings
FIG. 1 is a schematic diagram of the distribution of components of the present invention;
the LED lamp comprises a LED lamp bead, a lamp shade, a light valve array, a rear panel, an optical fiber, a front panel and a rear panel, wherein the LED lamp bead is arranged at the front end of the lamp shade, the light valve array is arranged at the rear end of the lamp shade, and the light valve array is arranged at the rear end of the lamp shade.
Detailed Description
The invention is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected, can be indirectly connected through an intermediate medium, and can also be communicated with the inside of two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The invention relates to a micro-spacing LED display screen module based on a field sequential color technology, which is a unit for forming a display screen. The main design idea of the display screen module is that an RGB high-power LED lamp bead 1 is used as a light source, R, G, B can independently control the switch and the brightness, and can emit red light, green light and blue light, and the brightness can be adjusted. The intensity of the output light path is controlled by a light valve. The light valve is used for controlling the light path to be closed and the intensity of light passing through the light path, and a liquid crystal light valve or other types of light valves are used as the light valve.
As shown in fig. 1, the display screen module is provided with an RGB high-power LED lamp bead 1 as a light source, and R, G, B can control the switch and the brightness separately to perform color adjustment. The light valve array 3 is arranged corresponding to the light source, the lampshade 2 which can uniformly gather the light to the input surface of the light valve array is arranged between the light source and the light valve array 3, and the light emitted by the light source uniformly irradiates on the light valve array 3 after passing through the lampshade 2. The light passes through the light valve array 3 to control the output intensity of the light path, and then irradiates the back panel to form a plurality of pixel points. Each pixel point on the back panel 4 is connected with the pixel point on the front panel by using an optical fiber 5 to transmit light, and different colors are displayed on the front panel 6. In a specific implementation, the front panel 6 is larger in size than the rear panel 4.
The control board is provided with the control circuit, the control circuit can circularly lighten the R, G, B lampwick of the LED, and meanwhile, the control board is used for controlling the corresponding switching degree of the light valve. The control circuit controls the field frequency of the lighting of the R, G, B lamp wick to be more than or equal to 24 multiplied by 3Hz. The control circuit sequentially controls R, G, B lampwick to be lightened, when the field frequency is more than or equal to 24 multiplied by 3Hz, the effect of persistence of vision can be achieved, and R, G, B monochromatic lights are overlapped in time (different from overlapping of spatial monochromatic lights) to generate colors. The invention can generate color by controlling the lighting time of the R, G, B lampwick of the light source and overlapping R, G, B frames in time, has simple structure, does not need a precise grating lens, does not need to enlarge the light valve scale and the optical fiber scale, does not need a color filter, and has high energy efficiency.
In a specific implementation of the invention, the light valve array 3 has M rows by N columns of light valves, the light valve array 3 separates the input light into M rows by N columns of output light paths, each light valve having no sub-light valves and no color filters. Each light valve controls the output intensity of the light path, and the output color is adjusted.
In a specific implementation of the invention, the rear panel 4, the array of optical fibers 5 and the front panel 6 are referred to as projection components. The light on the back panel 4 is transmitted to the front panel 6 through the optical fiber array, so that external output display is realized.
The LED display screen module is characterized in that LED lamp beads 1, a lampshade 2 and a light valve array 3 are all arranged on a projection part, and an assembling structure for splicing and installing the modules is arranged on the projection part to form a whole large screen. The assembly structure can adopt the assembly structure of the existing LED screen.
As used herein, static energy efficiency refers to the percentage of output energy (light energy) to input energy (electrical energy or light energy) independent of the displayed image; and the dynamic power consumption is related to the color of the display image, the energy consumption is maximum when the display is full white, the energy consumption is minimum when the display is full black, and the local dimming can reduce the dynamic power consumption. The display screen module can perform R, G, B independent area dimming, and can reduce the dynamic energy consumption of the display screen to 30% of the existing LCD screen. The static energy efficiency is improved by 3 times compared with the prior art.
The cost of one high-power LED in the technical field is far smaller than the sum of the cost of a large number of low-power LEDs with the same total power. If a large number of low-power LEDs are used, the display effect of the display screen can be adversely affected as long as one of the low-power LEDs fails. According to the invention, one RGB high-power LED lamp bead is used as a light source, so that the number of LED lamp beads is greatly reduced, the production cost and the production difficulty are reduced, the average failure-free time is greatly improved, and the reliability is improved.
According to the invention, an RGB high-power LED lamp bead is used as a light source of a display screen, a color filter is not needed, and a R, G, B lamp core of the high-power LED lamp bead is lighted circularly, so that stable color mixing is realized when the field frequency is more than or equal to 24X 3Hz. The invention sets the light valve array to adjust the intensity of the light path, uses the optical fiber to transmit the output light path to the front panel, and realizes the image display of the display screen. The invention can greatly reduce the manufacturing cost of the micro-space LED display screen, improve the average fault-free time and improve the reliability; meanwhile, the energy efficiency is 3 times of that of an LCD screen, and the energy is saved.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (3)
1. A micro-spacing LED display screen module based on a field sequential color technology is characterized in that: the light source is an RGB high-power LED lamp bead (1), and the R, G, B lamp core can be independently controlled to switch and brightness; the light valve array (3) is correspondingly arranged, so that the output intensity of the light path can be controlled; the light irradiates the rear panel (4) to form a plurality of pixel points after passing through the light valve array (3), and each pixel point on the rear panel (4) is connected with the pixel point on the front panel (6) by using an optical fiber (5) to transmit light; the control circuit circularly lights the R, G, B lamp core of the LED and simultaneously controls the corresponding switching degree of the light valve; the field frequency is more than or equal to 24 Hz; a lampshade (2) which can uniformly gather light to the input surface of the light valve array (3) is arranged between the light source and the light valve array (3); the rear panel (4), the optical fibers (5) and the front panel (6) are projection components, and the size of the front panel (6) is larger than that of the rear panel (4); the light valve array (3) has M rows by N columns of light valves, dividing the input light into M rows by N columns of output light paths; the light valve is not provided with a color filter.
2. The fine pitch LED display screen module based on field sequential color technique as claimed in claim 1, wherein: the LED lamp beads (1), the lamp shade (2) and the light valve array (3) are all installed on the projection component, and an assembling structure for splicing and installing between modules is arranged on the projection component.
3. The micro-pitch LED display screen module based on the field sequential color technique according to any one of claims 1-2, wherein: the light valve uses a liquid crystal light valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111403217.3A CN114333613B (en) | 2021-11-24 | 2021-11-24 | Micro-spacing LED display screen module based on field sequential color technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111403217.3A CN114333613B (en) | 2021-11-24 | 2021-11-24 | Micro-spacing LED display screen module based on field sequential color technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114333613A CN114333613A (en) | 2022-04-12 |
| CN114333613B true CN114333613B (en) | 2024-04-02 |
Family
ID=81046049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111403217.3A Active CN114333613B (en) | 2021-11-24 | 2021-11-24 | Micro-spacing LED display screen module based on field sequential color technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114333613B (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2121704U (en) * | 1992-04-14 | 1992-11-11 | 张云祥 | Optical fibre enlarging show screen |
| JPH0584931U (en) * | 1992-04-16 | 1993-11-16 | 日本ビクター株式会社 | LCD projector device |
| WO1999038046A1 (en) * | 1998-01-23 | 1999-07-29 | Burger Robert J | Lenslet array systems and methods |
| JP2002372701A (en) * | 2001-06-13 | 2002-12-26 | Ricoh Co Ltd | Picture display device |
| US6595648B1 (en) * | 1998-06-03 | 2003-07-22 | Sharp Kabushiki Kaisha | Projection display |
| CN1645250A (en) * | 2004-12-07 | 2005-07-27 | 成都泰阳视讯技术有限公司 | Single-chip microdisplay projecting optical engine and projector of time division three-color LED light |
| US7252394B1 (en) * | 2003-07-03 | 2007-08-07 | Advanced Numicro Systems, Inc. | Laser projection display and illumination device with MEMS scanning mirror for indoor and outdoor applications |
| CN101086608A (en) * | 2006-06-05 | 2007-12-12 | 中国科学院物理研究所 | Projection display device |
| CN101750854A (en) * | 2008-12-03 | 2010-06-23 | 北京中视中科光电技术有限公司 | Optical-fiber laser wide projection device |
| CN101840138A (en) * | 2010-03-30 | 2010-09-22 | 广东威创视讯科技股份有限公司 | Spliced projection display device |
| CN105334687A (en) * | 2014-08-01 | 2016-02-17 | 欧司朗股份有限公司 | Projection system |
| CN209805986U (en) * | 2019-07-22 | 2019-12-17 | 东莞广辰光电科技有限公司 | Projection structure with uniform brightness |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7318644B2 (en) * | 2003-06-10 | 2008-01-15 | Abu-Ageel Nayef M | Compact projection system including a light guide array |
-
2021
- 2021-11-24 CN CN202111403217.3A patent/CN114333613B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2121704U (en) * | 1992-04-14 | 1992-11-11 | 张云祥 | Optical fibre enlarging show screen |
| JPH0584931U (en) * | 1992-04-16 | 1993-11-16 | 日本ビクター株式会社 | LCD projector device |
| WO1999038046A1 (en) * | 1998-01-23 | 1999-07-29 | Burger Robert J | Lenslet array systems and methods |
| US6595648B1 (en) * | 1998-06-03 | 2003-07-22 | Sharp Kabushiki Kaisha | Projection display |
| JP2002372701A (en) * | 2001-06-13 | 2002-12-26 | Ricoh Co Ltd | Picture display device |
| US7252394B1 (en) * | 2003-07-03 | 2007-08-07 | Advanced Numicro Systems, Inc. | Laser projection display and illumination device with MEMS scanning mirror for indoor and outdoor applications |
| CN1645250A (en) * | 2004-12-07 | 2005-07-27 | 成都泰阳视讯技术有限公司 | Single-chip microdisplay projecting optical engine and projector of time division three-color LED light |
| CN101086608A (en) * | 2006-06-05 | 2007-12-12 | 中国科学院物理研究所 | Projection display device |
| CN101750854A (en) * | 2008-12-03 | 2010-06-23 | 北京中视中科光电技术有限公司 | Optical-fiber laser wide projection device |
| CN101840138A (en) * | 2010-03-30 | 2010-09-22 | 广东威创视讯科技股份有限公司 | Spliced projection display device |
| CN105334687A (en) * | 2014-08-01 | 2016-02-17 | 欧司朗股份有限公司 | Projection system |
| CN209805986U (en) * | 2019-07-22 | 2019-12-17 | 东莞广辰光电科技有限公司 | Projection structure with uniform brightness |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114333613A (en) | 2022-04-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110231735B (en) | display device | |
| TWI328132B (en) | ||
| CN100549783C (en) | Light source module, light supply apparatus and LCD | |
| CN103514820B (en) | A kind of LCD splicing system eliminating display bezel | |
| US8721150B2 (en) | Backlight assembly and liquid crystal display device using the same | |
| US10629141B2 (en) | Redundant backlight for electronic display | |
| CN100428020C (en) | LCD backlight system with compatibility of night vision of using LED light source | |
| KR20090079929A (en) | Thin illumination deviece, display device and luminary device | |
| CN101476703A (en) | Backlight unit | |
| CN203688945U (en) | Laser backlight liquid crystal display device | |
| CN106908996A (en) | A kind of reflecting element, luminescence component, lamp bar, backlight module and display module | |
| WO2011152148A1 (en) | Illumination device, display device, and television reception device | |
| KR100710167B1 (en) | driving circuit of back light | |
| CN114333613B (en) | Micro-spacing LED display screen module based on field sequential color technology | |
| US20120050621A1 (en) | Lighting device, display device and television receiver | |
| CN106647041A (en) | Display having large-size liquid crystal matrix type LED backlight | |
| CN114333612B (en) | Micro-spacing LED display screen module based on grating lens | |
| JP2006284906A (en) | Backlight device and liquid crystal display device | |
| CN100501808C (en) | Double side light emitting diode display | |
| CN1052545C (en) | Colour large screen and super large screen liquid crystal display screen | |
| CN114283702A (en) | Micro-interval LED display screen module based on RGB (Red, Green, blue) split array | |
| CN114299822A (en) | Micro-interval LED display screen module based on high-power LED | |
| CN108089371B (en) | Modularized hexagonal prism red, green and blue optical fiber laser white light mixing backlight device and display device | |
| JP6920867B2 (en) | Lighting equipment, display equipment and TV receivers | |
| JP3126875U (en) | Rear projection LCD backlight illumination device |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |