TWM590097U - Protective film for in-display ultrasonic fingerprint recognition - Google Patents

Protective film for in-display ultrasonic fingerprint recognition Download PDF

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Publication number
TWM590097U
TWM590097U TW108208983U TW108208983U TWM590097U TW M590097 U TWM590097 U TW M590097U TW 108208983 U TW108208983 U TW 108208983U TW 108208983 U TW108208983 U TW 108208983U TW M590097 U TWM590097 U TW M590097U
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screen
protective film
layer
fingerprint recognition
glue
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TW108208983U
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周如彪
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周如彪
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12—Fingerprints or palmprints
    • G06V40/13—Sensors therefor
    • G06V40/1329—Protecting the fingerprint sensor against damage caused by the finger
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/10—Adhesives in the form of films or foils without carriers
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12—Fingerprints or palmprints
    • G06V40/13—Sensors therefor
    • G06V40/1306—Sensors therefor non-optical, e.g. ultrasonic or capacitive sensing
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/20—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive itself
    • C09J2301/204—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive itself the adhesive coating being discontinuous
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
    • C09J2301/302—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier the adhesive being pressure-sensitive, i.e. tacky at temperatures inferior to 30°C
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
    • C09J2301/312—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier parameters being the characterizing feature
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/40—Additional features of adhesives in the form of films or foils characterized by the presence of essential components
    • C09J2301/416—Additional features of adhesives in the form of films or foils characterized by the presence of essential components use of irradiation
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
    • G06F21/31—User authentication
    • G06F21/32—User authentication using biometric data, e.g. fingerprints, iris scans or voiceprints

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  • Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Image Input (AREA)

Abstract

本新型公開了一種用於屏下超聲波指紋識別的保護膜，所述保護膜包 括保護層和膠水層，保護層位於膠水層上方，在指紋識別區的保護膜總厚度

Figure 108208983-A0305-02-0001-1
0.70mm，本新型所述保護膜，應用於超聲波指紋識別的螢幕，對保護層的外形要求較低，屏下指紋識別區域的厚度是均勻的，穩定的，解鎖的方案是可靠的，如果有支撐點，在重物壓力作用下，指紋識別區膠水層形成均勻的厚度，能達到100%解鎖目標。 The present invention discloses a protective film for under-screen ultrasonic fingerprint identification. The protective film includes a protective layer and a glue layer. The protective layer is located above the glue layer and the total thickness of the protective film in the fingerprint recognition area
Figure 108208983-A0305-02-0001-1
0.70mm, the protective film of the new model is applied to the screen of ultrasonic fingerprint recognition, the shape of the protective layer is lower, the thickness of the fingerprint recognition area under the screen is uniform and stable, and the unlocking scheme is reliable, if there is Support point, under the pressure of heavy objects, the glue layer in the fingerprint identification area forms a uniform thickness, which can reach the 100% unlocking target.

Description

一種用於屏下超聲波指紋識別的保護膜 Protective film for ultrasonic fingerprint identification under screen

本新型涉及膠黏材料技術領域，尤其涉及一種用於屏下指紋識別的保護膜。 The invention relates to the technical field of adhesive materials, in particular to a protective film for fingerprint identification under the screen.

隨著科技的發展，採用屏下超聲波指紋識別的智慧手機越來越多，超聲波指紋識別採用了射頻技術，其原理是利用超聲波具有的穿透材料的能力，且隨材料的不同產生大小不同的回波，超聲波到達不同材質表面時，被吸收、穿透與反射的程度不同。因此，利用皮膚與空氣對於聲波阻抗的差異，能夠建立3D指紋圖形，就可以區分指紋所在位置，對手指表面的清潔程度並不用太過考慮，但其缺點在於超聲波指紋採用射頻技術，往往穿透物質時能量有限，比如手機表面的鋼化玻璃保護膜，不可過厚、無空氣，正常的PET，TPU等厚度較薄的材料可以輕易識別，但薄膜不耐刮，且手感差，遠不如玻璃的手感及抗摩擦效果。現在市場上的曲面鋼化玻璃保護膜，藍寶石保護膜，都是邊緣有雙面膠作粘合材料的產品，由於中間有空氣也無法進行指紋識別。 With the development of technology, there are more and more smart phones that use ultrasonic fingerprint recognition under the screen. Ultrasonic fingerprint recognition uses radio frequency technology. The principle is to use the ability of ultrasonic waves to penetrate materials, and different sizes are generated with different materials. Echoes, when ultrasonic waves reach different surfaces, are absorbed, penetrated and reflected to different degrees. Therefore, using the difference in acoustic impedance between skin and air to create a 3D fingerprint pattern, you can distinguish the location of the fingerprint. The cleanliness of the finger surface is not considered too much, but its disadvantage is that ultrasonic fingerprints use radio frequency technology and often penetrate Materials have limited energy, such as the tempered glass protective film on the surface of the mobile phone. It should not be too thick and no air. Normal PET, TPU and other thin materials can be easily identified, but the film is not scratch-resistant and has a poor hand feel, far less than glass Feel and anti-friction effect. The curved tempered glass protective film and sapphire protective film on the market are products with double-sided tape as the adhesive material on the edge. Because there is air in the middle, fingerprint recognition cannot be performed.

由於玻璃經過熱彎以後會產生翹曲且不確定性非常大，有正翹、反翹、直三種，液態鋼化玻璃的工作原理是：熱彎鋼化玻璃+防爆膜+UV固化膠水或其它液態膠水。通過治具把液態膠水放置在要保護的顯示幕表面，然後通過治具將玻璃放置在合適的位置，利用玻璃自身的重量，形成壓力，將液態膠水流平。這樣鋼化玻璃與要保護的顯示幕之間會形成流平液態膠水的膠水。然後通過UV固化或者熱固化，或者其它方式將液態膠變成固態膠，這樣整個過程 就是完成了，受玻璃形狀的變化及膠水流動性，還有人為操作因素多重制約，夾在中間的液態膠水的厚度極不穩定，造成解鎖失敗，給消費者帶來非常大的不便，也讓消費者平時的體驗大打折扣。 Because the glass will warp after hot bending and the uncertainty is very large, there are three kinds of forward warping, reverse warping, and straight. The working principle of liquid tempered glass is: hot bending tempered glass + explosion-proof film + UV curing glue or other Liquid glue. The liquid glue is placed on the surface of the display screen to be protected by the jig, and then the glass is placed in a suitable position by the jig, and the weight of the glass itself is used to form a pressure to level the liquid glue. In this way, a glue for leveling the liquid glue is formed between the tempered glass and the display screen to be protected. Then through UV curing or thermal curing, or other ways to change the liquid glue into solid glue, so the whole process It is completed. Due to the changes in the shape of the glass and the fluidity of the glue, as well as multiple restrictions on human operation factors, the thickness of the liquid glue sandwiched in the middle is extremely unstable, causing unlocking failure, which causes great inconvenience to consumers, and also makes Consumers' experience is usually greatly reduced.

基於此，開發一款能令屏下超聲波指紋識別的硬質保護膜具有重要的意義。 Based on this, it is of great significance to develop a hard protective film that enables ultrasonic fingerprint recognition under the screen.

為解決現有鋼化玻璃膜應用於屏下超聲波指紋識別螢幕導致識別準確性和靈敏度差，無法滿足日常使用的技術缺陷，本新型公開一種用於屏下超聲波指紋識別的鋼化玻璃保護膜，達到指紋識別100%的技術效果。 In order to solve the technical defects that the existing toughened glass film is applied to the ultrasonic fingerprint recognition screen under the screen, resulting in poor recognition accuracy and sensitivity, which cannot meet the daily use, the present invention discloses a tempered glass protective film for ultrasonic fingerprint recognition under the screen. 100% technical effect of fingerprint recognition.

為達到上述目的，通過如下技術方案予以實現：一種用於屏下超聲波指紋識別的保護膜，保護膜包括保護層和膠水層，保護層位於膠水層上方，其中，位於在指紋識別區的保護膜的總厚度

Figure 108208983-A0305-02-0004-2
0.70mm。 To achieve the above purpose, it is achieved through the following technical solutions: a protective film for ultrasonic fingerprint identification under the screen, the protective film includes a protective layer and a glue layer, the protective layer is located above the glue layer, wherein the protective film is located in the fingerprint recognition area Total thickness
Figure 108208983-A0305-02-0004-2
0.70mm.

本結構位於在指紋識別區的保護膜的總厚度

Figure 108208983-A0305-02-0004-3
0.70mm，由於超聲波穿透能力有限，因此保護膜越薄指紋解鎖越靈敏，根據多次實驗，將本結構的保護膜的厚度設置為小於或等於0.70mm，在保護螢幕的同時，能使識別的效率達到最高。 This structure is located in the total thickness of the protective film in the fingerprint recognition area
Figure 108208983-A0305-02-0004-3
0.70mm, due to the limited ability of ultrasonic penetration, the thinner the protective film, the more sensitive the fingerprint unlocking. According to many experiments, the thickness of the protective film of this structure is set to be less than or equal to 0.70mm, which can make the identification while protecting the screen The efficiency is the highest.

優選的，所述保護層為超聲波可穿透的硬質材料層。 Preferably, the protective layer is a hard material layer that can be penetrated by ultrasonic waves.

優選的，所述硬質材料層由玻璃材料構成。 Preferably, the hard material layer is composed of glass material.

優選的，所述玻璃材料為鋼化玻璃。 Preferably, the glass material is tempered glass.

優選的，所述保護層上還設置有防爆膜，所述防爆膜貼於保護層上的任意一面或兩面。 Preferably, an explosion-proof film is further provided on the protective layer, and the explosion-proof film is attached to any one side or both sides of the protective layer.

優選的，所述指紋識別區的保護層的厚度為0.15-0.33mm，指紋識別區的防爆膜的厚度為0.025-0.075mm，指紋識別區的膠水層厚度為0-0.225mm。 Preferably, the thickness of the protective layer in the fingerprint identification area is 0.15-0.33 mm, the thickness of the explosion-proof film in the fingerprint identification area is 0.025-0.075 mm, and the thickness of the glue layer in the fingerprint identification area is 0-0.225 mm.

優選的，在所述指紋識別區周圍的保護層上有若干個支撐點，支撐點上方放置一定重量的物體。支撐點的作用在於使膠水層內的液態膠水在指紋識別區的厚度控制在0-0.225mm支撐點高度。 Preferably, there are several support points on the protective layer around the fingerprint identification area, and objects of a certain weight are placed above the support points. The function of the support point is to control the thickness of the liquid glue in the glue layer in the fingerprint recognition area to be 0-0.225mm.

在指紋識別區周圍的保護層上設置若干支撐點，支撐點能有效的使膠水層的厚度保持在規定的範圍內並且厚度一致，在使用時，把帶有支撐點的保護層放置在要保護的螢幕表面，支撐點位於保護層和螢幕之間，在支撐點、螢幕和保護層之間填入液態膠水，然後在保護層的上方再放置一定重量的物體，該物體對保護層形成壓力，在壓力的作用下使液態膠水流平，再通過固化形成膠水層。 Set a number of support points on the protective layer around the fingerprint recognition area. The support points can effectively keep the thickness of the glue layer within the specified range and the thickness is consistent. When using, place the protective layer with support points on the protection layer to be protected On the screen surface, the supporting point is located between the protective layer and the screen, fill the liquid glue between the supporting point, the screen and the protective layer, and then place a certain weight object above the protective layer, the object forms a pressure on the protective layer, Under the effect of pressure, the liquid glue is leveled, and then the glue layer is formed through solidification.

在保護層和螢幕之間設置支撐點，並將具有一定重量的物體放置於指紋識別區上的保護層上，能有效的使液態膠水在膠水層的厚度不受後期固化或其他因素的影響，能使保護層與螢幕之間會形成厚度一致的膠水層。例如在保護層形狀受到變化，或膠水由於其流動性造成運動變形時，支撐點和一定的重量作用能有效的保持膠水層所處的區域的厚度一致，不受其影響。膠水層的厚度一致，這樣在使用時，能有效的保證超聲波的穿過，有效的減少在穿透過程中的損失，進一步的提高解鎖的效率。 Set a support point between the protective layer and the screen, and place an object with a certain weight on the protective layer on the fingerprint recognition area, which can effectively make the thickness of the liquid glue in the glue layer not affected by post-curing or other factors. The glue layer with the same thickness can be formed between the protective layer and the screen. For example, when the shape of the protective layer is changed or the glue is deformed due to its fluidity, the support point and a certain weight effect can effectively maintain the thickness of the area where the glue layer is located to be consistent and not affected by it. The thickness of the glue layer is consistent, so that when used, it can effectively ensure the penetration of ultrasonic waves, effectively reduce the loss during the penetration process, and further improve the efficiency of unlocking.

同時，上述結構的保護層的材料為鋼化玻璃材料，採用鋼化玻璃材料不僅能具有玻璃的較好的使用手感及優良的抗摩擦效果，還能較好的使支撐點支撐在螢幕和其本身之間，使膠水層的厚度保持一致。 At the same time, the material of the protective layer of the above structure is a toughened glass material. The use of toughened glass material can not only have a good glass feel and excellent anti-friction effect, but also better support the support point on the screen and its Between itself, keep the thickness of the glue layer consistent.

更進一步的，本裝置的支撐點的材料為透明的液態體，設置在螢幕和保護層之間，然後使用光固化或熱固化成透明固體。這樣的設置，不僅能有效的保持膠水層的厚度一致，並且也不會影響後期超聲波的穿透，使用效率更高。 Furthermore, the material of the supporting point of the device is a transparent liquid body, which is arranged between the screen and the protective layer, and then cured into a transparent solid by using light curing or heat curing. This setting not only can effectively keep the thickness of the glue layer consistent, but also does not affect the penetration of ultrasonic waves in the later period, and the use efficiency is higher.

優選的，所述支撐點的高度為0-0.225mm。 Preferably, the height of the supporting point is 0-0.225mm.

優選的，所述支撐點採用印刷或滴膠方式形成。 Preferably, the support point is formed by printing or glue dispensing.

優選的，所述膠水層形成方式為液態膠水滴加於顯示幕，然後保護層放置於液態膠水之上，液態膠水流平後，通過具有重量的物體放置於指紋識別區，然後固化所得。 Preferably, the glue layer is formed by adding liquid water droplets to the display screen, and then the protective layer is placed on the liquid glue. After the liquid glue is leveled, it is placed in the fingerprint recognition area through a weighted object and then cured.

優選的，所述液態膠水為UV膠水，所述固化為UV固化、光固化。 Preferably, the liquid glue is UV glue, and the curing is UV curing and light curing.

優選的，所述液態膠水為熱固化膠水，所述固化為熱固化。 Preferably, the liquid glue is thermal curing glue, and the curing is thermal curing.

有益效果： Beneficial effect:

本新型所述用於屏下超聲波指紋識別的鋼化玻璃保護膜，對玻璃的外形要求較低，屏下指紋識別區域的厚度是均勻的，穩定的，解鎖的方案是可靠的。如果有支撐點，在重力作用下，指紋識別區膠水層形成均勻的厚度，然後第一時間固化，能達到100%解鎖目標。 The tempered glass protective film used for ultrasonic fingerprint identification under the screen has low requirements on the shape of the glass, the thickness of the fingerprint identification area under the screen is uniform and stable, and the unlocking scheme is reliable. If there is a supporting point, under the action of gravity, the glue layer in the fingerprint recognition area will form a uniform thickness, and then solidify at the first time, which can reach the 100% unlocking target.

1‧‧‧保護層 1‧‧‧Protection layer

2‧‧‧膠水層 2‧‧‧Glue layer

3‧‧‧螢幕 3‧‧‧ screen

4‧‧‧防爆膜 4‧‧‧Explosion-proof membrane

5‧‧‧支撐點 5‧‧‧support point

圖1為本新型保護膜的結構示意圖。 Figure 1 is a schematic diagram of the structure of the new protective film.

圖2為本新型保護膜及其內的支撐點的結構示意圖。 FIG. 2 is a schematic structural diagram of the new type protective film and the supporting points therein.

如圖1所示，一種用於屏下超聲波指紋識別的保護膜，所述保護膜包括保護層1和膠水層2，保護層1位於膠水層2上方，保護層1為鋼化玻璃，位於 螢幕3上的指紋識別區的鋼化玻璃的厚度為0.20mm，指紋識別區的膠水層2厚度為0.01mm。 As shown in FIG. 1, a protective film for ultrasonic fingerprint recognition under the screen, the protective film includes a protective layer 1 and a glue layer 2, the protective layer 1 is located above the glue layer 2, the protective layer 1 is tempered glass, located in The thickness of the tempered glass in the fingerprint identification area on the screen 3 is 0.20 mm, and the thickness of the glue layer 2 in the fingerprint identification area is 0.01 mm.

所述膠水層2形成方式為UV固化的液態膠水滴加於顯示幕，然後鋼化玻璃放置於液態膠水之上，液態膠水流平後，通過具有重量的物體放置於指紋識別區，然後UV固化即得。 The glue layer 2 is formed by adding UV-cured liquid glue droplets to the display screen, and then the tempered glass is placed on the liquid glue. After the liquid glue is leveled, it is placed in the fingerprint recognition area through a weighted object, and then UV cured Get it.

本結構的保護膜，用於屏下超聲波指紋識別，可實現100%指紋識別。 The protective film of this structure is used for ultrasonic fingerprint identification under the screen, which can realize 100% fingerprint identification.

在一實施例中，如圖2所示，一種用於屏下超聲波指紋識別的保護膜，所述保護膜包括保護層1和膠水層2，保護層1位於膠水層2上方，保護層1為鋼化玻璃，在本實施例中，位於螢幕3上的指紋識別區的鋼化玻璃的厚度為0.25mm。 In an embodiment, as shown in FIG. 2, a protective film for ultrasonic fingerprint recognition under the screen includes a protective layer 1 and a glue layer 2. The protective layer 1 is located above the glue layer 2 and the protective layer 1 is Tempered glass, in this embodiment, the thickness of the tempered glass in the fingerprint recognition area on the screen 3 is 0.25 mm.

所述鋼化玻璃上貼有防爆膜4，用於提高鋼化玻璃保護膜的安全性，指紋識別區的防爆膜4的厚度為0.025mm，指紋識別區的膠水層2厚度為0.10mm。 An explosion-proof film 4 is attached to the tempered glass to improve the safety of the tempered glass protective film. The thickness of the explosion-proof film 4 in the fingerprint identification area is 0.025 mm, and the thickness of the glue layer 2 in the fingerprint identification area is 0.10 mm.

在本實施例中，所述指紋識別區周圍的保護層上有4個支撐點5，4個支撐點5的高度0.1mm，支撐點5的作用在於使膠水層2內的液態膠水在指紋識別區的厚度為0.10mm，4個支撐點5令指紋識別區膠水厚度相同，令指紋識別區更加準確靈敏。 In this embodiment, there are four support points 5 on the protective layer around the fingerprint recognition area, and the height of the four support points 5 is 0.1 mm. The function of the support points 5 is to enable the liquid glue in the glue layer 2 to be fingerprinted. The thickness of the area is 0.10mm, and the four support points 5 make the thickness of the glue in the fingerprint identification area the same, making the fingerprint identification area more accurate and sensitive.

所述膠水層2形成方式為UV固化的液態膠水滴加於顯示幕，然後鋼化玻璃放置於液態膠水之上，液態膠水流平後，通過具有重量的物體放置於指紋識別區，然後UV固化即得，本實施例中，由於指紋識別區周圍均勻分佈有4個支撐點，支撐點能有效的對保護層1和螢幕3之間形成的區域進行支撐，並在重物壓力作用下，使指紋識別區膠水層的厚度均為0.10mm，使其厚度一致。本 結構的保護膜，用於屏下超聲波指紋識別，可實現100%指紋識別。並且具有一定重量的物體可為20g的砝碼，具體砝碼的重量根據膠水的性能等因素決定。 The glue layer 2 is formed by adding UV-cured liquid glue droplets to the display screen, and then the tempered glass is placed on the liquid glue. After the liquid glue is leveled, it is placed in the fingerprint recognition area through a weighted object, and then UV cured That is, in this embodiment, since there are 4 supporting points evenly distributed around the fingerprint recognition area, the supporting points can effectively support the area formed between the protective layer 1 and the screen 3, and under the pressure of heavy objects, The thickness of the glue layer in the fingerprint recognition area is 0.10mm, so that the thickness is consistent. this Structured protective film for ultrasonic fingerprint recognition under the screen, which can realize 100% fingerprint recognition. And an object with a certain weight can be a 20g weight. The weight of a specific weight is determined according to factors such as the performance of the glue.

在另一實施例中，如圖2所示，一種用於屏下超聲波指紋識別的保護膜，所述保護膜包括保護層1和膠水層2，保護層1位於膠水層2上方，保護層1為鋼化玻璃，在本實施例中，位於螢幕3上的指紋識別區的鋼化玻璃的厚度為0.23mm。 In another embodiment, as shown in FIG. 2, a protective film for under-screen ultrasonic fingerprint recognition, the protective film includes a protective layer 1 and a glue layer 2, the protective layer 1 is located above the glue layer 2, and the protective layer 1 It is tempered glass. In this embodiment, the thickness of the tempered glass in the fingerprint recognition area on the screen 3 is 0.23 mm.

所述保護層1貼有防爆膜4，用於提高保護膜的安全性，指紋識別區的防爆膜4的厚度為0.05mm，指紋識別區的膠水層2厚度為0.15mm。 The protective layer 1 is pasted with an explosion-proof film 4 for improving the safety of the protective film. The thickness of the explosion-proof film 4 in the fingerprint identification area is 0.05 mm, and the thickness of the glue layer 2 in the fingerprint identification area is 0.15 mm.

在本實施例中，在所述指紋識別區周圍的保護層1上有5個支撐點5，5個支撐點5的高度0.15mm，支撐點5的作用在於令液態膠水在指紋識別區的厚度為0.15mm，5個支撐點5令指紋識別區膠水層2的厚度相同，令指紋識別區更加準確靈敏。 In this embodiment, there are five support points 5 on the protective layer 1 around the fingerprint identification area, and the height of the five support points 5 is 0.15 mm. The function of the support point 5 is to make the thickness of the liquid glue in the fingerprint identification area It is 0.15mm, and 5 support points 5 make the thickness of the glue layer 2 in the fingerprint identification area the same, making the fingerprint identification area more accurate and sensitive.

所述膠水層2形成方式為熱固化的液態膠水滴加於顯示幕，然後鋼化玻璃放置於液態膠水之上，液態膠水流平後，通過將25g的砝碼放置於指紋識別區，使膠水層2的厚度保持一致，然後熱固化即得，本實施例中，由於指紋識別區周圍均勻分佈有5個支撐點，在重物壓力作用下，指紋識別區膠水層2的厚度均為0.15mm，厚度一致，本結構的保護膜，用於屏下超聲波指紋識別，可實現100%指紋識別。 The glue layer 2 is formed by adding a liquid droplet of heat-cured liquid glue to the display screen, and then the tempered glass is placed on the liquid glue. After the liquid glue is leveled, the glue is placed on the fingerprint recognition area by placing a 25g weight to make the glue The thickness of the layer 2 remains the same, and then it is cured by heat. In this embodiment, since there are 5 support points evenly distributed around the fingerprint recognition area, the thickness of the glue layer 2 in the fingerprint recognition area is 0.15mm under the pressure of the heavy object , The thickness is the same, the protective film of this structure is used for ultrasonic fingerprint identification under the screen, which can realize 100% fingerprint identification.

此外，應當理解，雖然本說明書按照實施方式加以描述，但並非每個實施方式僅包含一個獨立的技術方案，說明書的這種敘述方式僅僅是為清楚起見，本領域技術人員應當將說明書作為一個整體，各實施例中的技術方案也可以經適當組合，形成本領域技術人員可以理解的其他實施方式。 In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only includes an independent technical solution. This description of the specification is for clarity only, and those skilled in the art should treat the specification as a Overall, the technical solutions in the embodiments can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

1‧‧‧保護層 1‧‧‧Protection layer

2‧‧‧膠水層 2‧‧‧Glue layer

3‧‧‧螢幕 3‧‧‧ screen

Claims (10)

一種用於屏下超聲波指紋識別的保護膜，保護膜位於螢幕上方，螢幕包括指紋識別區和其他區，其特徵在於，保護膜包括保護層和膠水層，保護層位於膠水層上方，其中，位於在指紋識別區的保護膜的總厚度
Figure 108208983-A0305-02-0010-4
0.70mm。 A protective film for ultrasonic fingerprint identification under the screen. The protective film is located above the screen. The screen includes a fingerprint recognition area and other areas. The protective film includes a protective layer and a glue layer. The protective layer is located above the glue layer. The total thickness of the protective film in the fingerprint recognition area
Figure 108208983-A0305-02-0010-4
0.70mm. 如申請專利範圍第1項所述用於屏下超聲波指紋識別的保護膜，其特徵在於，保護層為超聲波可穿透的硬質材料層，所述硬質材料層由玻璃材料構成，所述玻璃材料為鋼化玻璃。 The protective film for under-screen ultrasonic fingerprint recognition as described in item 1 of the patent scope is characterized in that the protective layer is a hard material layer that can penetrate through ultrasonic waves, and the hard material layer is composed of a glass material, and the glass material Tempered glass. 如申請專利範圍第2項所述用於屏下超聲波指紋識別的保護膜，其特徵在於，所述保護層上還連接有防爆膜，防爆膜位於保護層的任意一面或兩面。 As described in Item 2 of the patent application scope, a protective film for under-screen ultrasonic fingerprint identification is characterized in that an explosion-proof film is also connected to the protection layer, and the explosion-proof film is located on either or both sides of the protection layer. 如申請專利範圍第3項所述用於屏下超聲波指紋識別的保護膜，其特徵在於，位於指紋識別區的保護層、防爆膜、膠水層的厚度分別為0.15-0.33mm、0.025-0.075mm、0-0.225mm。 The protective film for under-screen ultrasonic fingerprint recognition as described in item 3 of the patent application range is characterized in that the thickness of the protective layer, explosion-proof film and glue layer in the fingerprint recognition area are 0.15-0.33mm and 0.025-0.075mm respectively , 0-0.225mm. 如申請專利範圍第1項所述用於屏下超聲波指紋識別的保護膜，其特徵在於，在所述指紋識別區周圍的保護層上有若干個支撐點，支撐點位於膠水層內，用於支撐保護層和螢幕，保持膠水層的厚度。 The protective film for ultrasonic fingerprint recognition under the screen as described in item 1 of the patent scope is characterized in that there are several support points on the protective layer around the fingerprint recognition area, and the support points are located in the glue layer for Support the protective layer and screen to maintain the thickness of the glue layer. 如申請專利範圍第5項所述用於屏下超聲波指紋識別的保護膜，其特徵在於，所述支撐點的高度為0-0.225mm。 The protective film for under-screen ultrasonic fingerprint recognition as described in item 5 of the patent application range is characterized in that the height of the supporting point is 0-0.225 mm. 如申請專利範圍第5項所述用於屏下超聲波指紋識別的保護膜，其特徵在於，所述支撐點採用印刷或滴膠方式形成。 The protective film for ultrasonic fingerprint identification under the screen as described in item 5 of the patent application range is characterized in that the support point is formed by printing or glue dropping. 如申請專利範圍第1項所述用於屏下超聲波指紋識別的保護膜，其特徵在於，所述膠水層形成方式為液態膠水滴加於顯示幕，然後鋼化玻璃放置 於液態膠水之上，液態膠水流平後，通過具有重量的物體放置于指紋識別區，然後固化即得。 The protective film for ultrasonic fingerprint recognition under the screen as described in item 1 of the patent scope is characterized in that the glue layer is formed by applying liquid water droplets on the display screen, and then placing the tempered glass On the liquid glue, after the liquid glue is leveled, it is placed in the fingerprint recognition area through an object with weight, and then cured. 如申請專利範圍第8項所述用於屏下超聲波指紋識別的保護膜，其特徵在於，所述膠水層為液態膠水，所述固化為UV固化或者光固化。 The protective film for under-screen ultrasonic fingerprint recognition as described in item 8 of the patent application range is characterized in that the glue layer is liquid glue, and the curing is UV curing or light curing. 如申請專利範圍第9項所述用於屏下超聲波指紋識別的保護膜，其特徵在於，所述液態膠水為熱固化膠水，所述固化為熱固化。 The protective film for ultrasonic fingerprint recognition under the screen as described in item 9 of the patent application range is characterized in that the liquid glue is a heat-curing glue, and the curing is heat-curing.
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