CN204480220U - Display device and touch-screen thereof and cover plate - Google Patents
Display device and touch-screen thereof and cover plate Download PDFInfo
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- CN204480220U CN204480220U CN201520118679.4U CN201520118679U CN204480220U CN 204480220 U CN204480220 U CN 204480220U CN 201520118679 U CN201520118679 U CN 201520118679U CN 204480220 U CN204480220 U CN 204480220U
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Abstract
The utility model relates to a kind of cover plate, be applied to touch-screen, this cover plate comprises provides the end face of touch-control and the bottom surface relative with end face, this cover plate has visible area and non-visible area, the bottom edge region of this cover plate forms depression, the non-visible area of the corresponding described cover plate of described depression, arranges light shield layer in described depression, and the bottom surface of described light shield layer and the bottom surface of described cover plate are in same plane.The utility model also relates to a kind of touch-screen and the display device with above-mentioned cover plate.By the depression treatment to cover plate, make the optical cement of thinner thickness can reach preferably bond effect, thus be also thinned whole touch-screen and display device, be conducive to the slimming design of display device, be also conducive to the integration of viewing area.
Description
Technical field
The utility model relates to touch-control display field, the touch-screen of particularly a kind of display device, and this display device and cover plate.
Background technology
Manufacturing industry most important development trend post-industrial age that intellectuality being, touch-screen preferably resolves the man-machine interaction bottleneck problem in Intelligent Process, and change its business model (taking smart mobile phone as typical case), facilitate the sound development of whole industrial chain, therefore have bright prospects.Current touch-screen has been widely used in the electronic product such as mobile phone, PDA/ multimedia.By touch sensible principle, existing touch-screen is mainly divided into resistance-type, condenser type, surperficial infrared type touch-screen.Wherein, capacitive touch screen has that structure is simple, transmittance is high, rub resistance, resistance to ambient humidity temperature variation, long service life, can realize the advantages such as multiple point touching, and day by day becomes market centre and the market focus of touch-screen.
In the display device with touch-screen, outermost structure is cover plate, and cover plate is divided into visible area and non-visible area.Visible area be generally by non-visible area ink printing so that visible area is showed, as shown in Figure 1, a kind of existing touch screen structure is designed on cover plate 10, directly carry out ink 11 and prints, be visible area 101 by the region that ink 11 surrounds, and ink printing region is non-visible area 102.It is poor that way like this can form section in visible area 101 with non-visible area 102 intersection, optical cement 12 is needed when being fitted with touch sensitive layer 13 by cover plate 10, this optical cement 12 must meet certain section difference filling capacity can reach effect of fitting preferably, particularly white and color panel ink 11 thickness thicker, required optical cement 12 is just thicker, thinning just more and more unfavorable to display device.Meanwhile, because optical cement 12 is semi-solid state, when filled section difference, be easy to produce bubble at ink 11 edge and corner location because filling less than; In addition due to the difference of height between ink 11 and visible area 101, be easy to cause edge, visible area 101 to occur bright border, affect integrated design effect.
Utility model content
Based on this, be necessary to provide a kind of display device, touch-screen and cover plate for above-mentioned defect.
A kind of cover plate, be applied to touch-screen, this cover plate comprises provides the end face of touch-control and the bottom surface relative with end face, this cover plate has visible area and is formed in the non-visible area of periphery, visible area, the bottom edge region of this cover plate forms depression, the non-visible area of the corresponding described cover plate of described depression, arranges light shield layer in described depression, and the bottom surface of described light shield layer and the bottom surface of described cover plate are in same plane.
Wherein in an embodiment, described depression is surrounded by orthogonal first surface and second surface, and described first surface is parallel to bottom surface and the end face of cover plate.
A kind of touch-screen, comprise cover plate and be combined the touch sensible structure arranged with cover plate, this cover plate has visible area and is formed in the non-visible area of periphery, visible area, the bottom edge region of this cover plate forms depression, the non-visible area of the corresponding described cover plate of described depression, arrange light shield layer in described depression, the bottom surface of described light shield layer and the bottom surface of described cover plate are in same plane.
Wherein in an embodiment, also comprise the optical cement of bonding cover plate and touch sensible structure, the bottom surface of described light shield layer and the bottom surface of cover plate bond with described optical cement simultaneously.
Wherein in an embodiment, this touch sensible structure comprises the first electrode layer be arranged on the bottom surface of cover plate, and can transfer printing nesa coating, this can comprise hypothallus and is arranged on the second electrode lay on hypothallus by transfer printing nesa coating, and described hypothallus is set directly on the first electrode layer.
Wherein in an embodiment, also comprise setting diaphragm on the second electrode layer.
Wherein in an embodiment, described depression is surrounded by orthogonal first surface and second surface, and described first surface is parallel to bottom surface and the end face of cover plate.
Wherein in an embodiment, described light shield layer is ink layer.
A kind of display device, the display module comprising touch-screen and arrange with Touch Screen, described touch-screen is any one touch-screen above-mentioned.
A kind of display device, comprise cover plate, touch display module and the optical cement for bond cover plate and touch display module, this cover plate has visible area and is formed in the non-visible area of periphery, visible area, the bottom edge region of this cover plate forms depression, the non-visible area of the corresponding described cover plate of described depression, arrange ink layer in described depression, the bottom surface of described ink layer and the bottom surface of described cover plate are in same plane, and the bottom surface of described ink layer and the bottom surface of cover plate bond with described optical cement simultaneously.
Cover plate in the utility model forms sunk area, and at sunk area printing ink layer, the bottom surface of ink layer and the bottom surface of cover plate is made to be in same plane, make the use amount of optical cement more frivolous and less, it also avoid bubble and to produce and optical cement is filled gap and had the formation of the unfavorable factors such as shade.Just because of this process makes optical cement that thinner thickness can be used can to reach preferably bond effect, thus also can thinning whole touch-screen and display device, be conducive to the design of the slimming of display device, be also conducive to the integration of viewing area.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing a kind of touch-screen;
The structural representation of the touch-screen that Fig. 2 provides for the utility model one embodiment;
The structural representation of the display device that Fig. 3-Fig. 6 provides for the different embodiment of the utility model.
Embodiment
For the ease of understanding the utility model, below with reference to relevant drawings, the utility model is described more fully.First-selected embodiment of the present utility model is given in accompanying drawing.But the utility model can realize in many different forms, is not limited to embodiment described herein.On the contrary, the object of these embodiments is provided to be make to disclosure of the present utility model more thoroughly comprehensively.
Unless otherwise defined, all technology used herein and scientific terminology are identical with belonging to the implication that those skilled in the art of the present utility model understand usually.The object of term used in the description herein just in order to describe specific embodiment, is not intended to be restriction the utility model.
The utility model makes particular design according to the covering plate structure of display device, can realize display device thinning, improve product yield, optimizing product outward appearance effect.Mentality of designing of the present utility model is as follows:
Design covering plate structure, carry out cutting or polish to form depression according to the ink printing shape that the bottom surface of cover plate will be formed, the section difference size that depression produces is determined according to the thickness of ink layer;
Ink printing is carried out in depressed area on the bottom surface of the cover plate processed, fills depressed area, makes the ink layer of formation and the bottom surface of cover plate be positioned at same plane;
Touch sensible structure is stacked on the bottom surface of cover plate, relative with described ink layer;
Optical cement between cover plate and touch sensible structure, for cover plate and the touch sensible structure of boning.
Preferably, described cover plate can be any one in the composite plastic plate of glass substrate, pet substrate, PMMA substrate, PC substrate, PMMA and PC.
Preferably, carry out depression treatment to cover plate and can adopt and cut, cut, grind, the various ways such as to cut and carry out, processing mode is determined according to unlike material.
Preferably, optical cement used can be solid-state glue, also can be the resin of glue or UV solidification.
Preferably, touch sensible structure can be film induction structure, glass induction structure, incell structure or oncell structure.Above-mentioned film induction structure, glass induction structure, incell structure or oncell structure are all terms that those skilled in the art know, such as film induction structure refers to that the carrier of touch sensitive layer is membrane structure, common film induction structure has skim structure, namely touch sensitive layer is formed in relative two surfaces of film, or double membrane structure, the surface that namely two touch sensitive layer are respectively formed at a corresponding skim combines again.Glass induction structure refers to that the carrier of touch sensitive layer is glass, common glass induction structure has single-glass structure, also double-layer glass structure is had, single-glass structure refers to that two touch sensitive layer are respectively formed at relative two surfaces of single-glass, and double-layer glass structure refers to and the surface that two touch sensitive layer are respectively formed at corresponding one deck glass combines again.In addition, also a touch sensitive layer can be formed on the cover board, another touch sensitive layer is combined with cover plate as film induction structure or glass induction structure again and arranges, and has two touch sensible Rotating fields finally to be formed.Incell structure or oncell structure refer to and are arranged in display screen by touch sensitive layer combination, without the need to providing separately the carrier of touch sensitive layer more in addition.Wherein, incell structure refers to touch sensitive layer to combine and is embedded in the liquid crystal pixel of display screen, and oncell structure refers to and touch sensitive layer is arranged between colored filter substrate and polaroid.
As shown in Figure 2, the touch-screen that the utility model one embodiment provides comprises cover plate 20, touch sensible structure 22 and the optical cement 21 for bond cover plate 20 and touch sensible structure 22.
Wherein, the fringe region of the bottom surface of cover plate 20 also arranges light shield layer, is specially ink layer 23 in one embodiment.The region of the corresponding cover plate of ink layer 23 20 is the non-visible area 204 of cover plate 20, and other regions of cover plate 20 are visible area 203.In certain embodiments, non-visible area 204 can be formed in four sides of the periphery of visible area 203, according to the actual design demand of product, also can be formed in the some of the periphery of visible area 203 or any number of side.
Cover plate 20 is first through special processing before arranging ink layer 23, and the fringe region in the bottom surface of cover plate 20 forms depression 200.The bottom surface of cover plate 20 is the face contacted with optical cement 21, and the end face relative with bottom surface of cover plate 20 is the face of user's touch-control.This ink layer 23 is just filled in the depression 200 of bottom surface, and depression 200 is filled and led up, and makes the bottom surface of the bottom surface of ink layer 23 and cover plate 20 be positioned at same plane.
More specifically, the fringe region of the bottom surface of cover plate 20 is processed to have orthogonal first surface 201 and second surface 202, wherein the bottom surface of first surface 201 and cover plate 20 and top surface being parallel.The region that first surface 201 and second surface 202 surround forms this depression 200.The width of first surface 201 forms the width of the non-visible area 204 of this cover plate 20.The height of second surface 202 forms the degree of depth of this depression 200, also the thickness of i.e. this ink layer 23.
Optical cement 21 can adopt solid-state glue, also can adopt the resin of glue or UV solidification.
Make it at a right angle by carrying out process to the corner of depression 200, in this structure, edge, visible area 203 does not have the generation of reflection ray, thus can not form " bright border " at edge, visible area 203, affects appearance.
Because the bottom surface of ink layer 23 and the bottom surface of cover plate 20 are all in a plane, the formation of the section of avoiding difference, the use amount of optical cement 21 like this is thinning, improves transparency while reducing thickness, and final products can be allowed more frivolous attractive in appearance.In addition, ink layer 23 is filled in the setting at depression 200 place of cover plate 20, it also avoid optical cement 21 and producing bubble when filling, filling gap and the generation of the bad phenomenon such as the anaclasis uneven generation edge of display area that causes is fuzzy, aberration.
As shown in Figure 3, the display module 24 that the display device that an embodiment provides comprises touch-screen and arranges with Touch Screen.The touch screen structure that embodiment shown in touch-screen with Fig. 2 provides is identical.This touch-screen comprises cover plate 20, touch sensible structure 22 and the optical cement 21 for bond cover plate 20 and touch sensible structure 22.Described cover plate 20 be glass substrate, also can be pet substrate, PMMA substrate, PC substrate, PMMA and PC composite plastic plate in any one.Described touch sensible structure 22 is membrane structure, and the touch sensitive layer in membrane structure can be single layer structure also can be double-decker.
In large stretch of state, first optical cement 21 is pasted together with touch sensible structure 22, then carries out being die-cut into small pieces, then fits with the shaping and cover plate 20 forming ink layer 23.Using the touch-screen of this kind of structure, can be thinned to 50 μm when using optical cement, even can accomplish that 50 μm with down to 25 μm, make whole touch-screen more frivolous, attractive in appearance, cost also can reduce.
As shown in Figure 4, the display module 24 that the display device that another embodiment provides comprises touch-screen and arranges with Touch Screen.The touch screen structure that embodiment shown in touch-screen with Fig. 2 provides is substantially identical.This touch-screen comprises cover plate 20, touch sensible structure 22a and the optical cement 21 for bond cover plate 20 and touch sensible structure 22a.Described cover plate 20 be glass substrate, also can be pet substrate, PMMA substrate, PC substrate, PMMA and PC composite plastic plate in any one.Described touch sensible structure 22a is glass structure, and the touch in the present embodiment in touch sensible structure 22a drives layer to be single layer structure.Optical cement 21 can first and touch sensible structure 22a be pasted together, then to fit with cover plate 20.The resin that optical cement 21 in the present embodiment also can use glue or other UV to solidify, and fitted by the mode pressing of some glue.The touch sensible structure of traditional employing glass structure, the thickness of its touch-screen made is at 150-175 μm, and after adopting the structural design in the present embodiment, thickness obviously reduces, and outward appearance is frivolous, feel is better.
As shown in Figure 5, then the display device that provides of an embodiment comprising cover plate 20, touching display module 22b and for boning cover plate 20 and touch the optical cement 21 of display module 22b.Identical with the various embodiments described above of cover plate 20, touch display module 22b and display module and touch sensible structural integrity are set together, the touch sensible structure that this touch shows in module 22b can be set to incell or oncell structure.
As shown in Figure 6, the display device that also an embodiment provides comprises cover plate 20 and is combined the touch sensible structure 22c arranged with cover plate 20.Identical with the various embodiments described above of cover plate 20.Touch sensible structure 22c comprise be arranged on cover plate 20 bottom surface on the first electrode layer 221, and can transfer printing nesa coating, this can comprise hypothallus 222 and is arranged on the second electrode lay 223 on hypothallus 222 by transfer printing nesa coating, and described hypothallus 222 is set directly on the first electrode layer 221.
First electrode layer 221 can be the transparent conductive materials such as ITO, forms transparency conducting layer, then form the first above-mentioned electrode layer 221 by patterned process by coating on the bottom surface of cover plate 20.First electrode layer 221 also can be metal grill conductive layer, graphene conductive layer, carbon nanotube conducting layer or electroconductive polymer layer.
The second electrode lay 223 and the first electrode layer 221, respectively as the reception of touch sensible structure 22c and emission layer, realize touch controllable function.The second electrode lay 223, can the form of transfer printing nesa coating be formed directly on the first electrode layer 221, can avoid the use of optical cement, thus reduces the integral thickness of display device.The material of hypothallus 222 can be the glue system material of insulation, and the second electrode lay 223 can adopt the modes such as coating, printing, sputter to be attached to the final the second electrode lay 223 forming patterning on hypothallus 222.
In certain embodiments, the diaphragm 224 be arranged on the second electrode lay 223 is also comprised.Diaphragm 224 can make this second electrode lay 223 from destruction.
The utility model is owing to carrying out depression treatment to cover plate 20, the bottom surface of the bottom surface of ink layer 23 and cover plate 20 is made to be positioned at same plane, thus when using optical cement 21 to carry out laminating touch sensible structure or touching display module, thinner optical cement 21 can be used, thus make touch-screen or display device realize ultrathin design.In addition, because the bottom surface of ink layer 23 and the bottom surface of cover plate 20 are positioned at same plane, the section eliminated because of ink layer formation in prior art is poor, when carrying out optical cement 21 and fitting, bubble fraction defective can be made obviously to reduce.Visible area " bright border " phenomenon simultaneously caused due to section difference is also eliminated, and improves the integration of viewing area.
Above embodiment only have expressed several embodiment of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (10)
1. a cover plate, be applied to touch-screen, this cover plate comprises provides the end face of touch-control and the bottom surface relative with end face, this cover plate has visible area and is formed in the non-visible area of periphery, visible area, it is characterized in that: the bottom edge region of this cover plate forms depression, the non-visible area of the corresponding described cover plate of described depression, arranges light shield layer in described depression, and the bottom surface of described light shield layer and the bottom surface of described cover plate are in same plane.
2. cover plate according to claim 1, is characterized in that, described depression is surrounded by orthogonal first surface and second surface, and described first surface is parallel to bottom surface and the end face of cover plate.
3. a touch-screen, comprise cover plate and be combined the touch sensible structure arranged with cover plate, this cover plate has visible area and is formed in the non-visible area of periphery, visible area, it is characterized in that, the bottom edge region of this cover plate forms depression, the non-visible area of the corresponding described cover plate of described depression, arranges light shield layer in described depression, and the bottom surface of described light shield layer and the bottom surface of described cover plate are in same plane.
4. touch-screen according to claim 3, is characterized in that, also comprises the optical cement of bonding cover plate and touch sensible structure, and the bottom surface of described light shield layer and the bottom surface of cover plate bond with described optical cement simultaneously.
5. touch-screen according to claim 3, it is characterized in that, this touch sensible structure comprises the first electrode layer be arranged on the bottom surface of cover plate, and can transfer printing nesa coating, this can comprise hypothallus and is arranged on the second electrode lay on hypothallus by transfer printing nesa coating, and described hypothallus is set directly on the first electrode layer.
6. touch-screen according to claim 5, is characterized in that, also comprises setting diaphragm on the second electrode layer.
7. touch-screen according to claim 3, is characterized in that, described depression is surrounded by orthogonal first surface and second surface, and described first surface is parallel to bottom surface and the end face of cover plate.
8. touch-screen according to claim 3, is characterized in that, described light shield layer is ink layer.
9. a display device, the display module comprising touch-screen and arrange with Touch Screen, described touch-screen is the touch-screen in claim 3-8 item described in any one.
10. a display device, comprise cover plate, touch display module and the optical cement for bond cover plate and touch display module, this cover plate has visible area and is formed in the non-visible area of periphery, visible area, it is characterized in that, the bottom edge region of this cover plate forms depression, the non-visible area of the corresponding described cover plate of described depression, in described depression, ink layer is set, the bottom surface of described ink layer and the bottom surface of described cover plate are in same plane, and the bottom surface of described ink layer and the bottom surface of cover plate bond with described optical cement simultaneously.
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| CN201520118679.4U CN204480220U (en) | 2015-02-28 | 2015-02-28 | Display device and touch-screen thereof and cover plate |
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| CN201520118679.4U CN204480220U (en) | 2015-02-28 | 2015-02-28 | Display device and touch-screen thereof and cover plate |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106564270A (en) * | 2016-11-18 | 2017-04-19 | 广东飞触科技股份有限公司 | Production process for high-strength low-cost capacitive touch screen easy to produce |
| CN107121827A (en) * | 2017-05-22 | 2017-09-01 | 惠州市德赛西威汽车电子股份有限公司 | Vehicle-mounted integral effect screen construction |
| WO2017219405A1 (en) * | 2016-06-24 | 2017-12-28 | 武汉华星光电技术有限公司 | Touch screen, display device and manufacturing method of touch screen |
| CN110288909A (en) * | 2019-06-11 | 2019-09-27 | 武汉华星光电半导体显示技术有限公司 | A kind of bend glass cover board and preparation method thereof, flexible display device |
| WO2020220207A1 (en) * | 2019-04-29 | 2020-11-05 | 深圳市柔宇科技有限公司 | Cover plate, manufacturing method thereof and electronic device |
| CN112002223A (en) * | 2020-08-11 | 2020-11-27 | 武汉华星光电半导体显示技术有限公司 | Display cover plate, preparation method thereof and display device |
| CN112037657A (en) * | 2020-09-14 | 2020-12-04 | 京东方科技集团股份有限公司 | Packaging structure, manufacturing method thereof, display panel and display device |
| CN113571662A (en) * | 2021-07-14 | 2021-10-29 | 惠州华星光电显示有限公司 | Display device and method for manufacturing the same |
| CN113703243A (en) * | 2020-05-22 | 2021-11-26 | 川奇光电科技（扬州）有限公司 | Cover plate for electronic ink screen and manufacturing method thereof |
| CN114999319A (en) * | 2022-05-31 | 2022-09-02 | 昆山国显光电有限公司 | Cover plate assembly and display panel |
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- 2015-02-28 CN CN201520118679.4U patent/CN204480220U/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2017219405A1 (en) * | 2016-06-24 | 2017-12-28 | 武汉华星光电技术有限公司 | Touch screen, display device and manufacturing method of touch screen |
| CN106564270A (en) * | 2016-11-18 | 2017-04-19 | 广东飞触科技股份有限公司 | Production process for high-strength low-cost capacitive touch screen easy to produce |
| CN107121827A (en) * | 2017-05-22 | 2017-09-01 | 惠州市德赛西威汽车电子股份有限公司 | Vehicle-mounted integral effect screen construction |
| WO2020220207A1 (en) * | 2019-04-29 | 2020-11-05 | 深圳市柔宇科技有限公司 | Cover plate, manufacturing method thereof and electronic device |
| CN110288909A (en) * | 2019-06-11 | 2019-09-27 | 武汉华星光电半导体显示技术有限公司 | A kind of bend glass cover board and preparation method thereof, flexible display device |
| CN113703243A (en) * | 2020-05-22 | 2021-11-26 | 川奇光电科技（扬州）有限公司 | Cover plate for electronic ink screen and manufacturing method thereof |
| WO2022032701A1 (en) * | 2020-08-11 | 2022-02-17 | 武汉华星光电半导体显示技术有限公司 | Display cover window and manufacturing method therefor, and display device |
| CN112002223A (en) * | 2020-08-11 | 2020-11-27 | 武汉华星光电半导体显示技术有限公司 | Display cover plate, preparation method thereof and display device |
| CN112037657A (en) * | 2020-09-14 | 2020-12-04 | 京东方科技集团股份有限公司 | Packaging structure, manufacturing method thereof, display panel and display device |
| US11805676B2 (en) | 2020-09-14 | 2023-10-31 | Chengdu Boe Optoelectronics Technology Co., Ltd. | Package structure, method for forming package structure, display panel and display device |
| CN113571662A (en) * | 2021-07-14 | 2021-10-29 | 惠州华星光电显示有限公司 | Display device and method for manufacturing the same |
| CN114999319A (en) * | 2022-05-31 | 2022-09-02 | 昆山国显光电有限公司 | Cover plate assembly and display panel |
| CN114999319B (en) * | 2022-05-31 | 2023-11-03 | 昆山国显光电有限公司 | Cover plate assembly and display panel |
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Address after: 215143 No. 233 Kangyang Road, Huangdi Town, Xiangcheng District, Suzhou City, Jiangsu Province Patentee after: SUZHOU OFILM TECH Co.,Ltd. Patentee after: Nanchang OFilm Tech. Co.,Ltd. Patentee after: Ophiguang Group Co.,Ltd. Address before: 215143 No. 233 Kangyang Road, Huangdi Town, Xiangcheng District, Suzhou City, Jiangsu Province Patentee before: SUZHOU OFILM TECH Co.,Ltd. Patentee before: Nanchang OFilm Tech. Co.,Ltd. Patentee before: OFilm Tech Co.,Ltd. Address after: 215143 No. 233 Kangyang Road, Huangdi Town, Xiangcheng District, Suzhou City, Jiangsu Province Patentee after: SUZHOU OFILM TECH Co.,Ltd. Patentee after: Nanchang OFilm Tech. Co.,Ltd. Patentee after: OFilm Tech Co.,Ltd. Address before: 215143 No. 233 Kangyang Road, Huangdi Town, Xiangcheng District, Suzhou City, Jiangsu Province Patentee before: SUZHOU OFILM TECH Co.,Ltd. Patentee before: Nanchang OFilm Tech. Co.,Ltd. Patentee before: Shenzhen OFilm Tech Co.,Ltd. |
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| TR01 | Transfer of patent right |
Effective date of registration: 20210415 Address after: 231323 Building 1, precision electronics industrial park, Hangbu Town, Shucheng County, Lu'an City, Anhui Province Patentee after: Anhui jingzhuo optical display technology Co.,Ltd. Address before: 215143 No. 233 Kangyang Road, Huangdi Town, Xiangcheng District, Suzhou City, Jiangsu Province Patentee before: SUZHOU OFILM TECH Co.,Ltd. Patentee before: Nanchang OFilm Tech. Co.,Ltd. Patentee before: Ophiguang Group Co.,Ltd. |