CN208604059U - A kind of high light transmittance screen protecting film - Google Patents
A kind of high light transmittance screen protecting film Download PDFInfo
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- CN208604059U CN208604059U CN201821202871.1U CN201821202871U CN208604059U CN 208604059 U CN208604059 U CN 208604059U CN 201821202871 U CN201821202871 U CN 201821202871U CN 208604059 U CN208604059 U CN 208604059U
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Abstract
The utility model relates to a kind of high light transmittance screen protecting films, are suitable for fingerprinting operation equipment under optical panel, are multilayered structure, which is characterized in that the screen protecting film has upper PC film layer and lower PC film layer；It is bonded between PC film layer and lower PC film layer using OCA optical adhesive layer on this；The upper PC film layer, OCA optical adhesive layer and lower PC film layer three it is compound after less than 185 μm of thickness h (micron), luminous flux φ be not less than 75lm (lumen)；The upper surface of upper PC film layer is coated with wear-resisting hardened layer, and the lower surface of lower PC film layer is coated with highly-breathable bonding glass oxidant layer.The utility model significantly improves the detection accuracy of fingerprint.
Description
Technical field
The utility model relates to Screen Technology field, especially a kind of high light transmittance screen protecting film.
Background technique
Due to shielding the prevalence of concept comprehensively, no matter conventional fingerprint unlock is scraped using front or pressing mode unlocks, still
It is unlocked using the back side, can all influence the appearance of the smart machines such as mobile phone.Fingerprint recognition needs fingerprint collecting window, certainly will will affect screen
Accounting, therefore shield lower fingerprint technique and come into being.
Shielding lower fingerprint at present mainly has ultrasonic wave and optical plan.Optical plan is referred to is arranged optics below screen
Sensor identifies the fingerprint lines of user by issuing near infrared light, and thinking is similar with the structure light scheme of apple.Work as biography
When sensor is activated, sensor can illuminate the region of fingerprint recognition by the oled panel backlight on upper layer, then by reflection
Optical fiber is transferred in the sensor of bottom, and completes entire identification process.Existing market major part protective film is all using PET film as base
Film after sticking on this common protective film, because PET has crystallization and birefringent characteristic, leads to light source reflection not exclusively, fingerprint is known
It is not insensitive.
Utility model content
It is provided a kind of high the technical problem to be solved by the utility model is to overcome the deficiencies in the prior art
Translucency screen protecting film, to adapt to shield the fingerprint recognition demand of lower fingerprinting operation equipment.
To solve aforementioned technical problem, the utility model uses following technical scheme:
A kind of high light transmittance screen protecting film is suitable for fingerprinting operation equipment under optical panel, is multilayered structure, feature
It is, which has upper PC film layer and lower PC film layer；It is used between PC film layer and lower PC film layer on this
OCA optical adhesive layer bonding；The upper PC film layer, OCA optical adhesive layer and lower PC film layer three it is compound after thickness h be less than
185 μm (micron), luminous flux φ is not less than 75lm (lumen)；The upper surface of upper PC film layer is coated with wear-resisting hardened layer, lower PC
The lower surface of film layer is coated with highly-breathable bonding glass oxidant layer.
The utility model can also be advanced optimized by following technical measures:
As advanced optimizing, the upper PC film layer and upper PC film layer are curtain coating PC film layer, and translucency is big
In 90%, mist degree is less than 1%, and crystallinity is less than 20%.The refractive index of the upper PC film layer and upper PC film layer less than 1.6,
Phase difference is less than 20nm.The upper PC film layer and upper PC film layer with a thickness of 20 μm~90 μm.The OCA optical adhesive layer
With a thickness of 5~20 μm.
As advanced optimizing, the lower surface of the bonding glass oxidant layer is bonded with PET release film layer, the PET release film
Layer can be separated with bonding glass oxidant layer.
As advanced optimizing, the wear-resisting hardened layer upper surface is bonded with silicone protective layer, which can be with
Wear-resisting hardened layer separation.
As advanced optimizing, the highly-breathable bonding glass oxidant layer is silicone pressure sensitive glue-line, PU glue-line or pressure gram
Power glue-line.
As advanced optimizing, the highly-breathable bonding glass oxidant layer with a thickness of 5~50 μm, to 180 ° of glass
Peeling force is 1~2000gf/25mm.
As advanced optimizing, the wear-resisting hardened layer is polyacrylic resin hardened layer, with a thickness of 1~10 μm, and
Its water droplet angle is greater than 105 degree, and surface hardness is greater than 500g 2H.
Due to using above technical scheme, the advantageous effects that the utility model has are as follows:
The utility model is by two layers of PC film of setting and one layer of OCA optical cement, the infrared light that fingerprint sensor is generated
After line first passes through lower PC film layer generation refraction for the first time, then by second of refraction of OCA optical adhesive layer generation, finally by upper PC
Film layer occurs third time and reflects, and since itself light transmittance of PC film and OCA are very high, but it is different to the refractive index of light, light
Line is being compensated and is being adjusted into OCA optical adhesive layer after the refraction of lower PC film, then enters back into the refraction of PC film layer
To reach the single-layer polyester film smaller optical path difference thicker than thickness, the interference of light is reduced, fingerprint under optical panel is reduced
Dispersion phenomenon is caused to influence optical finger print recognition speed after infrared light pierce through the protection film.
Detailed description of the invention
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below
In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art
Under the premise of labour, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the overall structure diagram of the utility model.
Fig. 2 is that the light of the utility model propagates schematic diagram.
Fig. 3 is that the light of the prior art propagates schematic diagram.
Appended drawing reference:
PC film layer on 1.；2.OCA optical adhesive layer；3. lower PC film layer；4. wear-resisting hardened layer；5. bonding glass oxidant layer；
6. silicone protective layer；7.PET release film layer.
Specific embodiment
To keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, below in conjunction with attached drawing to this
Utility model is described in further detail.The component of the utility model embodiment being usually described and illustrated herein in the accompanying drawings
It can arrange and design with a variety of different configurations.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without making creative work, fall within the protection scope of the utility model.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
It is in the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", " perpendicular
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only
For ease of description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have it is specific
Orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.In addition, term " the
One ", " second ", " third " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
The concrete meaning of language in the present invention.
With reference to the accompanying drawing, it elaborates to some embodiments of the utility model.In the absence of conflict, under
The feature in embodiment stated can be combined with each other.
Embodiment one:
A kind of high light transmittance screen protecting film as shown in Figure 1 to Figure 2 is suitable for fingerprinting operation equipment under optical panel,
For multilayered structure, which is characterized in that the screen protecting film has upper PC film layer 1 and lower PC film layer 3；PC film layer 1 on this
It is bonded between lower PC film layer 3 using OCA optical adhesive layer 2；The upper PC film layer 1, OCA optical adhesive layer 2 and lower PC film
Less than 185 μm of thickness h (micron) after 3 three of layer are compound, luminous flux φ are not less than 75lm (lumen)；Upper PC film layer 1 it is upper
Surface is coated with wear-resisting hardened layer 4, and the lower surface of lower PC film layer 3 is coated with highly-breathable bonding glass oxidant layer 5.
It should be noted that in the present embodiment, upper PC film layer 1, OCA optical adhesive layer 2 and lower 3 three of PC film layer are multiple
When thickness h after conjunction is 140 μm (micron), actual measurement luminous flux φ value is 81.5lm (lumen), when thickness h is 180 μm (micron),
Surveying luminous flux φ value is 80.9lm (lumen).
In the present embodiment, the upper PC film layer 1 and upper PC film layer 1 are curtain coating PC film layer, and translucency is big
In 90%, mist degree is less than 1%, and crystallinity is less than 20%.The refractive index of the upper PC film layer 1 and upper PC film layer 1 is less than
1.6, phase difference is less than 20nm.The upper PC film layer 1 and upper PC film layer 1 with a thickness of 20 μm~90 μm.The OCA optics
Glue-line 2 with a thickness of 5~20 μm.
It should be noted that curtain coating PC is opposite to have better translucency with common PC, and crystallinity is lower, and its phase
Difference it is relatively low, usually in 20nm hereinafter, in the present embodiment curtain coating PC translucency be 95%, mist degree 6%, crystallinity 8%,
Refractive index 1.0, phase difference 15nm.In other embodiments, it can choose the respective value that the utility model provides, but
It is that the better material price of optical property is more expensive, economy is poorer, therefore need to consider economy while considering properties of product
Index, therefore applicant is it is not recommended that manufacture this product using expensive material, in order to avoid cause stockpiling of unsold product.
It should also be noted that, preferably 65 μm of thickness of upper PC film layer 1 and upper PC film layer 1 in the present embodiment,
OCA optical adhesive layer 2 with a thickness of 10 μm, three is compound with a thickness of 140 μm.The difficulty of the smaller manufacture of the thickness of PC film layer is got over
Greatly, intensity is lower, and the bigger manufacture of thickness is easy but optical property is lower.By detection, the thickness of PC film layer is not preferably greater than 90 μ
M, less than 20 μm.For OCA optical adhesive layer 2, thickness is up to 20 μm, then will lead to very much PC film layer 1 and lower PC greatly
Shearing dislocation is easy to produce between film layer 3, it is minimum 5 μm, too thin, it is not easy to coat.
In the present embodiment, the lower surface of the bonding glass oxidant layer 5 is bonded with PET release film layer 7, the PET release film
Layer 7 can be separated with bonding glass oxidant layer 5.
In the present embodiment, 4 upper surface of wear-resisting hardened layer is bonded with silicone protective layer 6, which can be with
Wear-resisting hardened layer 4 separates.
In the present embodiment, the highly-breathable bonding glass oxidant layer 5 is silicone pressure sensitive glue-line, in other embodiment
In can use the materials such as PU glue-line or acryl glue-line.
In the present embodiment, the highly-breathable bonding glass oxidant layer 5 with a thickness of 5~20 μm, it is specially 10 μm, right
180 ° of peeling forces of glass are 1~2000gf/25mm, specially 1000gf/25mm.
In the present embodiment, the wear-resisting hardened layer 4 is polyacrylic resin hardened layer, with a thickness of 1~10 μm, specifically
It is 5 μm, and its water droplet angle is greater than 105 degree, specially 120 degree；Surface hardness is greater than 500g 2H, specially 800g 2H.
The specific production technology that the protective film of the utility model generates is as follows:
Step 1., which applies upper 1 upper surface of PC film layer, is covered with the wear-resisting generation of the hardened layer 4 semi-finished product A of polyacrylic resin；
Step 2. applies in the lower surface of lower PC film layer 3 and is covered with organic pressure-sensitive gel layer generation semi-finished product B；
Step 3. is bonded generation with the upper surface of semi-finished product B after the lower surface of semi-finished product A applies and is covered with OCA optical adhesive layer 2
Semi-finished product C；
Step 4. is bonded silicone protective layer 6 on the wear-resisting hardened layer 4 of semi-finished product C, pastes on its silicone pressure sensitive glue-line
The protective film product that market can be sold finally is generated after closing PET release film.
In the present embodiment, as shown in Fig. 2, two layers of PC film and one layer of OCA optical cement, fingerprint sensor are generated red
After UV light first passes through the lower generation of PC film layer 3 refraction for the first time, then by second of refraction of the generation of OCA optical adhesive layer 2, finally lead to
It crosses PC film layer 1 and third time refraction occurs, since itself light transmittance of PC film and OCA are very high, but its refractive index to light
Difference, light are being compensated and are being adjusted into OCA optical adhesive layer 2 after the refraction of lower PC film, and it is thin then to enter back into PC
The refraction of film layer 1 reduces the interference of light, reduces optical panel to reach the smaller optical path difference of single-layer polyester film thicker than thickness
Dispersion phenomenon is caused to influence optical finger print recognition speed after the infrared light pierce through the protection film of lower fingerprint.
The light propagation condition and the prior art of the utility model are compared, referring to figs. 2 and 3 as it can be seen that incident light passes through
It crosses after the utility model and generates the angle [alpha] of emergent light and be obviously reduced compared with the angle beta of emergent light in prior art Fig. 3, i.e. α <
β, it is seen that the utility model substantially reduces the chromatic dispersion problem of light, improves translucent effect, and then improves fingerprint detection essence
Degree.
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should
Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of
Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new
The range of each embodiment technical solution of type.
Claims (10)
1. a kind of high light transmittance screen protecting film is suitable for fingerprinting operation equipment under optical panel, is multilayered structure, feature exists
In the screen protecting film has upper PC film layer and lower PC film layer；OCA is used on this between PC film layer and lower PC film layer
Optical adhesive layer bonding；The upper PC film layer, OCA optical adhesive layer and lower PC film layer three it is compound after thickness h less than 185 μ
M, luminous flux φ are not less than 75 lm；The upper surface of upper PC film layer is coated with wear-resisting hardened layer, and the lower surface of lower PC film layer applies
It is covered with highly-breathable bonding glass oxidant layer.
2. high light transmittance screen protecting film according to claim 1, which is characterized in that the upper PC film layer and upper PC are thin
Film layer is curtain coating PC film layer, and translucency is greater than 90%, and mist degree is less than 1%, and crystallinity is less than 20%.
3. high light transmittance screen protecting film according to claim 1 or 2, which is characterized in that the upper PC film layer and upper
For the refractive index of PC film layer less than 1.6, phase difference is less than 20nm.
4. high light transmittance screen protecting film according to claim 3, which is characterized in that the upper PC film layer and upper PC are thin
Film layer with a thickness of 20 μm~90 μm.
5. high light transmittance screen protecting film according to claim 1 or 4, which is characterized in that the thickness of the OCA optical adhesive layer
Degree is 5~20 μm.
6. high light transmittance screen protecting film according to claim 1, which is characterized in that the following table of the bonding glass oxidant layer
Face is bonded with PET release film layer, which can separate with bonding glass oxidant layer.
7. high light transmittance screen protecting film according to claim 1, which is characterized in that the wear-resisting hardened layer upper surface is viscous
Conjunction has silicone protective layer, which can separate with wear-resisting hardened layer.
8. high light transmittance screen protecting film according to claim 1, which is characterized in that the highly-breathable glass glue
Layer is silicone pressure sensitive glue-line, PU glue-line or acryl glue-line.
9. high light transmittance screen protecting film according to claim 8, which is characterized in that the highly-breathable glass glue
Layer with a thickness of 5~20 μm, be 1~2000gf/25mm to 180 ° of peeling forces of glass.
10. high light transmittance screen protecting film according to claim 1, which is characterized in that the wear-resisting hardened layer is poly- third
Olefin(e) acid hardening of resin layer, with a thickness of 1~10 μm, and its water droplet angle is greater than 105 degree, and surface hardness is greater than 500g 2H.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821202871.1U CN208604059U (en) | 2018-07-27 | 2018-07-27 | A kind of high light transmittance screen protecting film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821202871.1U CN208604059U (en) | 2018-07-27 | 2018-07-27 | A kind of high light transmittance screen protecting film |
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| Publication Number | Publication Date |
|---|---|
| CN208604059U true CN208604059U (en) | 2019-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821202871.1U Active CN208604059U (en) | 2018-07-27 | 2018-07-27 | A kind of high light transmittance screen protecting film |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108690517A (en) * | 2018-07-27 | 2018-10-23 | 绍兴旭源新材料科技有限公司 | A kind of high light transmittance screen protecting film |
| CN113930179A (en) * | 2020-06-29 | 2022-01-14 | 华为技术有限公司 | Protection film, flexible screen module and electronic equipment of flexible screen |
-
2018
- 2018-07-27 CN CN201821202871.1U patent/CN208604059U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108690517A (en) * | 2018-07-27 | 2018-10-23 | 绍兴旭源新材料科技有限公司 | A kind of high light transmittance screen protecting film |
| CN113930179A (en) * | 2020-06-29 | 2022-01-14 | 华为技术有限公司 | Protection film, flexible screen module and electronic equipment of flexible screen |
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