JP3223443U - Protective film for ultrasonic fingerprint recognition under display - Google Patents
Protective film for ultrasonic fingerprint recognition under display Download PDFInfo
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- JP3223443U JP3223443U JP2019002790U JP2019002790U JP3223443U JP 3223443 U JP3223443 U JP 3223443U JP 2019002790 U JP2019002790 U JP 2019002790U JP 2019002790 U JP2019002790 U JP 2019002790U JP 3223443 U JP3223443 U JP 3223443U
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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
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- 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
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- 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
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- 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
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- 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
【課題】ディスプレイ下の超音波指紋認識用の保護フィルムを提供する。【解決手段】前記保護フィルムは、保護層１および接着剤層２を含み、指紋認識領域での保護フィルムの総厚≦０．７０ｍｍであり、前記保護フィルムは、超音波指紋認識のディスプレイ３に適用され、保護層の外形に対する要求が低く、ディスプレイ下の指紋認識領域の厚さが均一かつ安定であり、ロック解除方式が信頼でき、支持点があれば、重力の作用下で、指紋認識領域の接着剤層が均一な厚さを形成し、１００％のロック解除目標に達する。【選択図】図１A protective film for ultrasonic fingerprint recognition under a display is provided. The protective film includes a protective layer (1) and an adhesive layer (2), and the total thickness of the protective film in a fingerprint recognition region is ≦ 0.70 mm. The protective film is applied to a display (3) for ultrasonic fingerprint recognition. Applied, the requirement for the outer shape of the protective layer is low, the thickness of the fingerprint recognition area under the display is uniform and stable, the unlocking method is reliable, and if there is a support point, the fingerprint recognition area under the action of gravity The adhesive layer forms a uniform thickness and reaches the 100% unlocking target. [Selection] Figure 1
Description
本考案は、接着材料の技術分野に関し、特にディスプレイ下の指紋認識用の保護フィルムに関する。 The present invention relates to the technical field of adhesive materials, and more particularly to a protective film for fingerprint recognition under a display.
科学技術の発展に伴い、ディスプレイ下の超音波指紋認識を用いるスマートフォンがますます多くなり、超音波指紋認識は、無線周波数技術を採用しており、その原理は、超音波が有する材料透過の能力、かつ材料によって大きさの異なるエコーを生成することを利用し、超音波が異なる材質の表面に到達する時に吸収されて透過および反射の程度が異なることである。このため、音波インピーダンスに対する皮膚と空気との差を利用し、３次元の指紋パターンを確立することができ、それによって指紋が位置する位置を区別することができ、指の表面の清浄度を考えなくても良いが、その欠点は、超音波指紋認識が無線周波数技術を採用し、物質を透過する時にエネルギーがしばしば制限されることである。例えば、携帯電話の表面の強化ガラスの保護フィルムについて、厚すぎなく、空気がないようにし、通常のＰＥＴ、ＴＰＵ等の厚さの比較的薄い材料が認識しやすいが、フィルムが傷つけやすく、かつ手触りが悪く、ガラスの手触りおよび耐摩擦の効果に遥かに及ばない。現在、市販の曲面強化ガラスの保護フィルムおよびサファイアの保護フィルムは、いずれも縁に両面テープを接着材料として使用している製品であり、中央に空気があるため、指紋認識ができない。 With the development of science and technology, more and more smartphones using ultrasonic fingerprint recognition under the display, ultrasonic fingerprint recognition adopts radio frequency technology, the principle of which is the ability of ultrasonic material transmission In addition, by using the generation of echoes having different sizes depending on materials, ultrasonic waves are absorbed when they reach the surface of different materials, and the degree of transmission and reflection is different. For this reason, the difference between skin and air with respect to sonic impedance can be used to establish a three-dimensional fingerprint pattern, thereby distinguishing the position where the fingerprint is located, and considering the cleanliness of the finger surface. Although not necessary, the drawback is that ultrasonic fingerprint recognition employs radio frequency technology and energy is often limited when penetrating the material. For example, the protective film of tempered glass on the surface of a mobile phone should not be too thick and free of air, and a relatively thin material such as ordinary PET or TPU can be easily recognized, but the film is easily damaged, and The touch is bad and far less than the touch and rub resistance of glass. At present, both the commercially available protective film of curved tempered glass and the protective film of sapphire are products using double-sided tape as an adhesive material at the edge, and since there is air in the center, fingerprint recognition is not possible.
ガラスが熱によって曲げた後に反りが発生して不安定性が非常に大きいため、正方向の反り、逆方向の反り、直線の反りの３種類があり、液体強化ガラスの動作原理は、熱曲げ強化ガラス＋防爆フィルム＋ＵＶ硬化接着剤または他の液体接着剤である。治具によって液体接着剤を保護したいディスプレイの表面を置き、そして治具によってガラスを適切な位置を置き、ガラス自体の重さに利用して圧力を形成し、液体接着剤を平らにする。このように強化ガラスと保護したいディスプレイとの間に平らにした液体接着剤が形成される。そしてＵＶ硬化または熱硬化、または他の方式によって液体接着剤を固体接着剤に変え、このように全体のプロセスが完了し、ガラスの形状の変化や接着剤の流動性および人為的操作要因の複数の制約を受け、中間に挟み込まれた液体接着剤の厚さが非常に不安定であり、ロック解除不良を起こし、消費者に大きな不便をもたらし、消費者の通常の体験に悪い影響をもたらす。 Since the glass is warped after being bent by heat and the instability is very large, there are three types of warping in the forward direction, warping in the reverse direction, and straight warping. Glass + explosion-proof film + UV curable adhesive or other liquid adhesive. Place the surface of the display where you want to protect the liquid adhesive with the jig, and place the glass in the proper position with the jig and use the weight of the glass itself to create pressure and flatten the liquid adhesive. Thus, a flattened liquid adhesive is formed between the tempered glass and the display to be protected. Then, the liquid adhesive is changed to solid adhesive by UV curing or heat curing, or other methods, and thus the whole process is completed, the glass shape changes, the adhesive fluidity and the manipulating factors The thickness of the liquid adhesive sandwiched between them is very unstable, causing unlocking failure, causing great inconvenience to the consumer and adversely affecting the consumer's normal experience.
これに基づき、ディスプレイ下の超音波指紋認識を可能にする硬質の保護フィルムを開発することは、非常に重要である。 Based on this, it is very important to develop a hard protective film that enables ultrasonic fingerprint recognition under the display.
従来の強化ガラスフイルムがディスプレイ下の超音波指紋認識ディスプレイに適用されることによる認識の正確性および感度が悪く、日常使用を満足できないという技術的欠点を解決するために、本考案は、ディスプレイ下の超音波指紋認識用の強化ガラスの保護フィルムを開示し、指紋認識の１００％の技術的効果を達成する。 In order to solve the technical drawback that the conventional tempered glass film is applied to the ultrasonic fingerprint recognition display under the display, the accuracy and sensitivity of the recognition is poor and the daily use cannot be satisfied. Disclosed a tempered glass protective film for ultrasonic fingerprint recognition, achieving 100% technical effect of fingerprint recognition.
上記の目的を達成するために、以下の技術的解決手段によって実現される。 In order to achieve the above object, the present invention is realized by the following technical solutions.
ディスプレイ下の超音波指紋認識用の保護フィルムであって、保護フィルムは、保護層および接着剤層を含み、指紋認識領域を位置する保護フィルムの総厚≦０．７０ｍｍである。 A protective film for ultrasonic fingerprint recognition under a display, wherein the protective film includes a protective layer and an adhesive layer, and the total thickness of the protective film in which the fingerprint recognition area is located is 0.70 mm or less.
本構造の指紋認識領域に位置する保護フィルムの総厚≦０．７０ｍｍであり、超音波の透過能力が限られているため、保護フィルムが薄いほど指紋のロック解除の感度が高くなり、複数回の実験によると、本構造の保護フィルムの厚さを０．７０ｍｍ未満に設定することにより、ディスプレイの保護しながら、認識効率を最も高くなることができる。 The total thickness of the protective film located in the fingerprint recognition area of this structure is ≦ 0.70 mm, and the ability to transmit ultrasonic waves is limited. Therefore, the thinner the protective film, the higher the sensitivity for unlocking the fingerprint, and multiple times. According to the experiment, the recognition efficiency can be maximized while protecting the display by setting the thickness of the protective film of this structure to less than 0.70 mm.
好ましくは、前記保護層は超音波が透過可能な硬質材料層である。 Preferably, the protective layer is a hard material layer capable of transmitting ultrasonic waves.
好ましくは、前記硬質材料層はガラス材料からなる。 Preferably, the hard material layer is made of a glass material.
好ましくは、前記ガラス材料は強化ガラスである。 Preferably, the glass material is tempered glass.
好ましくは、前記保護層上には、防爆フィルムがさらに設置され、前記防爆フィルムは、保護層上のいずれか１面または２面に貼り付けられる。 Preferably, an explosion-proof film is further provided on the protective layer, and the explosion-proof film is attached to any one or two surfaces on the protective layer.
好ましくは、前記指紋認識領域の保護層の厚さは０．１５−０．３３ＭＭであり、指紋認識領域の防爆フィルムの厚さは０．０２５−０．０７５ｍｍであり、指紋認識領域の接着剤層の厚さは０−０．２２５ｍｍである。 Preferably, the thickness of the protective layer in the fingerprint recognition area is 0.15-0.33MM, the thickness of the explosion-proof film in the fingerprint recognition area is 0.025-0.075mm, and the adhesive for the fingerprint recognition area The layer thickness is 0-0.225 mm.
好ましくは、前記指紋認識領域の周囲の保護層上には、複数の支持点があり、支持点の上方に一定の重量の物体が置かれる。支持点の役割は、接着剤層内の液体接着剤の指紋認識領域での厚さを０−支持点の高さに制御することである。 Preferably, there are a plurality of support points on the protective layer around the fingerprint recognition area, and an object having a constant weight is placed above the support points. The role of the support point is to control the thickness of the liquid adhesive in the adhesive layer in the fingerprint recognition area to 0-the height of the support point.
指紋認識領域の周囲の保護層上には、複数の支持点が設置され、支持点は、接着剤層の厚さを所定の範囲内に効果的に維持して厚さを一致させることができ、使用時、支持点を有する保護層を保護したいディスプレイの表面に置き、支持点を保護層とディスプレイとの間に位置させ、支持点において、ディスプレイと保護層との間に液体接着剤を充填し、そして保護層の上方に一定の重量の物体を置き、該物体が保護層に圧力を形成し、圧力の作用下で液体接着剤を平らにし、さらに硬化させることによって接着剤層を形成する。 A plurality of supporting points are installed on the protective layer around the fingerprint recognition area, and the supporting points can effectively maintain the thickness of the adhesive layer within a predetermined range to match the thickness. In use, place a protective layer with a supporting point on the surface of the display you want to protect, place the supporting point between the protective layer and the display, and fill the liquid adhesive between the display and the protective layer at the supporting point And forming an adhesive layer by placing an object of constant weight above the protective layer, the object creating pressure on the protective layer, flattening the liquid adhesive under the action of pressure and further curing .
保護層とディスプレイとの間に支持点を設置し、かつ一定の重量のある物体を指紋認識領域での保護層上に置き、液体接着剤の接着剤層の厚さを後硬化やその他の要因の影響を受けないようにすることができ、保護層とディスプレイとの間に均一な厚さの接着剤層を形成することができる。例えば、保護層の形状が変化したり、接着剤がその流動性によって動きが変形したりする時、支持点および一定の重量作用は、その影響を受けないように、接着剤層が位置する領域の厚さが一致することを効果的に維持できる。接着剤層の厚さが一致し、このように、使用時、超音波の透過を効果的に保証でき、透過の過程での損失を効果的に減少させ、ロック解除の効率をさらに向上させる。 Place a support point between the protective layer and the display, and place an object with a certain weight on the protective layer in the fingerprint recognition area, post-cure and other factors for the thickness of the adhesive layer of the liquid adhesive The adhesive layer having a uniform thickness can be formed between the protective layer and the display. For example, when the shape of the protective layer changes or the movement of the adhesive changes due to its fluidity, the supporting point and the area where the adhesive layer is located are not affected by certain weight effects. It is possible to effectively maintain that the thicknesses of the two match. The thickness of the adhesive layer is matched, and thus, in use, the transmission of ultrasonic waves can be effectively ensured, the loss during the transmission process is effectively reduced, and the unlocking efficiency is further improved.
同時に、上記の構造の保護層の材料は、強化ガラス材料であり、強化ガラス材料を採用することは、ガラスのより良い使用感および良い耐摩擦の効果を有するだけでなく、接着剤層の厚さを均一に維持するように、支持点をディスプレイとその自体との間により良く支持することができる。 At the same time, the material of the protective layer of the above structure is a tempered glass material, and adopting the tempered glass material not only has a better feeling of use and good anti-friction effect of the glass, but also the thickness of the adhesive layer The support point can be better supported between the display and itself so as to maintain uniformity.
さらに、本装置の支持点の材料は透明な液体であり、ディスプレイと保護層との間に設置され、そして光硬化または熱硬化を用いて透明な固体になる。このような設置は、接着剤層の厚さを均一に効果的に維持することができるだけではなく、かつ後期の超音波の透過に影響を与えず、使用効率がより高くなる。 In addition, the material of the support point of the device is a transparent liquid that is placed between the display and the protective layer and becomes a transparent solid using photocuring or heat curing. Such an installation not only can maintain the thickness of the adhesive layer uniformly and effectively, but also does not affect the transmission of the ultrasonic wave in the later stage, and the usage efficiency becomes higher.
好ましくは、前記支持点の高さは０−０．２２５ｍｍである。 Preferably, the height of the support point is 0-0.225 mm.
好ましくは、前記支持点は、印刷または接着剤滴下の方式よって形成される。 Preferably, the supporting point is formed by a printing or adhesive dripping method.
好ましくは、前記接着剤層の形成方式は、液体接着剤をディスプレイに滴下させ、そして保護層を液体接着剤の上に置き、液体接着剤が平らにした後、重量のある物体を指紋認識領域に置くことにより、硬化させて得ることである。 Preferably, the adhesive layer is formed by dropping a liquid adhesive onto the display and placing a protective layer on the liquid adhesive, and after the liquid adhesive is flattened, the heavy object is removed from the fingerprint recognition area. It is obtained by being cured by placing it on the surface.
好ましくは、前記液体接着剤はＵＶ接着剤であり、前記硬化はＵＶ硬化および光硬化である。 Preferably, the liquid adhesive is a UV adhesive and the curing is UV curing and light curing.
好ましくは、前記液体接着剤は熱硬化の接着剤であり、前記硬化は熱硬化である。 Preferably, the liquid adhesive is a thermosetting adhesive, and the curing is thermosetting.
本考案の前記ディスプレイ下の超音波指紋認識用の強化ガラスの保護フィルムは、ガラスの外形に対する要求が低く、ディスプレイ下の指紋認識領域の厚さは均一かつ安定であり、ロック解除方式が信頼できる。支持点があれば、重力の作用下で、指紋認識領域の接着剤層は、均一な厚さを形成し、そして早めに硬化し、１００％のロック解除目標に達することができる。 The protective film of tempered glass for ultrasonic fingerprint recognition under the display of the present invention has low requirements for the outer shape of the glass, the thickness of the fingerprint recognition area under the display is uniform and stable, and the unlocking method is reliable . With support points, under the action of gravity, the adhesive layer in the fingerprint recognition area can form a uniform thickness and harden early to reach the 100% unlock target.
実施例１
図１に示すように、ディスプレイ下の超音波指紋認識用の保護フィルムであって、前記保護フィルムは、保護層１および接着剤層２を含み、保護層１は、強化ガラスであって、ディスプレイ３上に位置する指紋認識領域の強化ガラスの厚さが０．２０ｍｍであり、指紋認識領域の接着剤層２の厚さが０．０１ｍｍである。
Example 1
As shown in FIG. 1, it is a protective film for ultrasonic fingerprint recognition under a display, and the protective film includes a protective layer 1 and an adhesive layer 2, and the protective layer 1 is tempered glass, The thickness of the tempered glass in the fingerprint recognition region located on 3 is 0.20 mm, and the thickness of the adhesive layer 2 in the fingerprint recognition region is 0.01 mm.
前記接着剤層２の形成方式は、ＵＶ硬化された液体接着剤をディスプレイに滴下させ、そして強化ガラスを液体接着剤の上に置き、液体接着剤を平らにした後、重量のある物体を指紋認識領域に置き、そしてＵＶ硬化させて得ることである。 The adhesive layer 2 is formed by dropping a UV-cured liquid adhesive onto a display, placing a tempered glass on the liquid adhesive, flattening the liquid adhesive, and then fingerprinting a heavy object. It is obtained by placing in the recognition area and UV curing.
この構造の保護フィルムは、ディスプレイ下の超音波指紋認識用であり、１００％の指紋認識を実現できる。 The protective film having this structure is for ultrasonic fingerprint recognition under the display, and can realize 100% fingerprint recognition.
実施例２
図２に示すように、ディスプレイ下の超音波指紋認識用の保護フィルムであって、前記保護フィルムは、保護層１および接着剤層２を含み、保護層１は、強化ガラスであり、ディスプレイ３上に位置する指紋認識領域の強化ガラスの厚さが０．２５ｍｍである。
Example 2
As shown in FIG. 2, it is a protective film for ultrasonic fingerprint recognition under the display, and the protective film includes a protective layer 1 and an adhesive layer 2, and the protective layer 1 is tempered glass, and the display 3 The thickness of the tempered glass in the fingerprint recognition region located above is 0.25 mm.
前記強化ガラス上には、強化ガラスの保護フィルムの安全性を向上させるために防爆フィルム４が貼り付けられ、指紋認識領域の防爆フィルム４の厚さが０．０２５ｍｍであり、指紋認識領域の接着剤層２の厚さが０．１０ ｍｍである。 An explosion-proof film 4 is affixed on the tempered glass to improve the safety of the protective film of the tempered glass, the thickness of the explosion-proof film 4 in the fingerprint recognition area is 0.025 mm, and adhesion of the fingerprint recognition area The thickness of the agent layer 2 is 0.10 mm.
前記指紋認識領域の周囲の保護層上には、４つの支持点５があり、４つの支持点５の高さが０．１ｍｍであり、支持点５の役割は、接着剤層２内の液体接着剤の指紋認識領域での厚さを０．１０ｍｍにすることであり、４つの支持点５は、指紋認識領域の接着剤の厚さを同じにし、指紋認識領域をより正確かつ高感度にする。 There are four support points 5 on the protective layer around the fingerprint recognition area, the height of the four support points 5 is 0.1 mm, and the role of the support points 5 is the liquid in the adhesive layer 2. The thickness of the adhesive in the fingerprint recognition area is 0.10 mm, and the four support points 5 make the thickness of the adhesive in the fingerprint recognition area the same, making the fingerprint recognition area more accurate and sensitive. To do.
前記接着剤層２形成方式は、ＵＶ硬化の液体接着剤をディスプレイに滴下させ、そして強化ガラスを液体接着剤の上に置き、液体接着剤を平らにした後、重量のある物体を指紋認識領域に置き、そしてＵＶ硬化させて得ることであり、本実施例では、指紋認識領域の周囲に４つの支持点が均等に配置されるため、支持点は、保護層１とディスプレイ３との間に形成された領域を効果的に支持することができ、かつ重量物の圧力の作用下で、指紋認識領域の接着剤層の厚さをいずれも０．１０ｍｍとし、その厚さを一致させる。この構造の保護フィルムは、ディスプレイ下の超音波指紋認識用であり、１００％指紋認識を実現できる。かつ、一定の重量のある物体は、２０ｇの分銅であってもよく、分銅の具体的な重量は、接着剤の性能等によって決められる。 In the adhesive layer 2 forming method, a UV curable liquid adhesive is dropped on a display, and a tempered glass is placed on the liquid adhesive, and the liquid adhesive is flattened. In this embodiment, four support points are evenly arranged around the fingerprint recognition area, so that the support point is between the protective layer 1 and the display 3. The formed area can be effectively supported, and the thickness of the adhesive layer in the fingerprint recognition area is set to 0.10 mm under the action of the pressure of a heavy object, and the thicknesses are matched. The protective film having this structure is for ultrasonic fingerprint recognition under the display, and can realize 100% fingerprint recognition. Further, the object having a constant weight may be a 20 g weight, and the specific weight of the weight is determined by the performance of the adhesive and the like.
実施例３
図２に示すように、ディスプレイ下の超音波指紋認識用の保護フィルムであって、前記保護フィルムは、保護層１および接着剤層２を含み、保護層１は、強化ガラスであり、ディスプレイ３上に位置する指紋認識領域の強化ガラスの厚さが０．２３ ｍｍである。
Example 3
As shown in FIG. 2, it is a protective film for ultrasonic fingerprint recognition under the display, and the protective film includes a protective layer 1 and an adhesive layer 2, and the protective layer 1 is tempered glass, and the display 3 The thickness of the tempered glass in the fingerprint recognition region located above is 0.23 mm.
前記保護層１には、保護フィルムの安全性を向上させるために防爆フィルム４が貼り付けられ、指紋認識領域の防爆フィルム４の厚さが０．０５ｍｍであり、指紋認識領域の接着剤層２の厚さが０．１５ｍｍである。 An explosion-proof film 4 is attached to the protective layer 1 in order to improve the safety of the protective film, the thickness of the explosion-proof film 4 in the fingerprint recognition area is 0.05 mm, and the adhesive layer 2 in the fingerprint recognition area. Has a thickness of 0.15 mm.
前記指紋認識領域の周囲の保護層１上には、５つの支持点５があり、５つの支持点５の高さが０．１５ｍｍであり、支持点５の役割は、液体接着剤の指紋認識領域での厚さを０．１５ｍｍにすることであり、５つの支持点５は、指紋認識領域の接着剤層２の厚さを同じにし、指紋認識領域より正確かつ高感度にする。 There are five support points 5 on the protective layer 1 around the fingerprint recognition area, and the height of the five support points 5 is 0.15 mm. The role of the support points 5 is fingerprint recognition of the liquid adhesive. The thickness in the region is 0.15 mm, and the five support points 5 make the thickness of the adhesive layer 2 in the fingerprint recognition region the same, making it more accurate and sensitive than the fingerprint recognition region.
前記接着剤層２の形成方式は、熱硬化の液体接着剤をディスプレイに滴下させ、そして強化ガラスを液体接着剤の上に置き、液体接着剤を平らにした後、２５ｇの分銅を指紋認識領域を置くことにより、接着剤層２の厚さを一致させ、そして熱硬化させて得ることであり、本実施例では、指紋認識領域の周囲には、５つの支持点が均等に配置されるため、重量物の圧力の作用下で、指紋認識領域の接着剤層２の厚さをいずれも０．１５ｍｍとし、厚さを一致させる。この構造の保護フィルムは、ディスプレイ下の超音波指紋認識用であり、１００％指紋認識を実現できる。 The adhesive layer 2 is formed by dripping a thermosetting liquid adhesive onto the display, placing tempered glass on the liquid adhesive, flattening the liquid adhesive, and then applying a 25 g weight to the fingerprint recognition area. Is obtained by matching the thickness of the adhesive layer 2 and heat curing. In this embodiment, five support points are evenly arranged around the fingerprint recognition area. Under the action of heavy material pressure, the thickness of the adhesive layer 2 in the fingerprint recognition area is set to 0.15 mm, and the thicknesses are matched. The protective film having this structure is for ultrasonic fingerprint recognition under the display, and can realize 100% fingerprint recognition.
また、理解すべきこととして、本明細書の実施形態に従って説明したが、各実施形態には、一つの独立した技術的解決手段しか含まれないというわけではなく、明細書のこのような説明形態が単に明確にするためのものにすぎず、当業者は、明細書を全体としてみるべきであり、各実施例における技術的解決手段を適切に組み合わせ、当業者が理解できる他の実施形態を形成してもよい。 Also, it should be understood that although described according to the embodiments of the present specification, each embodiment does not include only one independent technical solution, and such description forms of the specification. Are merely for clarity, those skilled in the art should take the entire specification as a whole, and appropriately combine the technical solutions in each example to form other embodiments that can be understood by those skilled in the art. May be.
図において、１−保護層、２−接着剤層、３−ディスプレイ、４−防爆フィルム、５−支持点 In the figure, 1-protective layer, 2-adhesive layer, 3-display, 4-explosion-proof film, 5-support point
Claims (10)
保護フィルムは、保護層（１）および接着剤層（２）を含み、指紋認識領域に位置する保護フィルムの総厚≦０．７０ｍｍであることを特徴とするディスプレイ下の超音波指紋認識用の保護フィルム。 A protective film for ultrasonic fingerprint recognition under the display, wherein the protective film is positioned above the display (3) and the display (3) includes a fingerprint recognition area and other areas;
The protective film includes a protective layer (1) and an adhesive layer (2), and the total thickness of the protective film located in the fingerprint recognition region is 0.70 mm or less for ultrasonic fingerprint recognition under a display. Protective film.
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| CN201920337426.4U CN210211596U (en) | 2019-03-15 | 2019-03-15 | A protection film for ultrasonic wave fingerprint identification under screen |
| CN201920337426.4 | 2019-03-15 |
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| JP3223443U true JP3223443U (en) | 2019-10-10 |
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| KR (1) | KR20200002089U (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113046000A (en) * | 2021-03-23 | 2021-06-29 | 广州医科大学附属口腔医院（广州医科大学羊城医院） | General type digital scanning head stain-preventing film |
| CN113411431A (en) * | 2021-07-21 | 2021-09-17 | 芜湖长信科技股份有限公司 | Ultrathin flexible cover plate and production method thereof |
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| CN109760373B (en) * | 2019-03-15 | 2024-04-09 | 周如彪 | Protective film for under-screen ultrasonic fingerprint identification and preparation method thereof |
-
2019
- 2019-03-15 CN CN201920337426.4U patent/CN210211596U/en active Active
- 2019-06-21 DE DE202019103458.0U patent/DE202019103458U1/en active Active
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113046000A (en) * | 2021-03-23 | 2021-06-29 | 广州医科大学附属口腔医院（广州医科大学羊城医院） | General type digital scanning head stain-preventing film |
| CN113411431A (en) * | 2021-07-21 | 2021-09-17 | 芜湖长信科技股份有限公司 | Ultrathin flexible cover plate and production method thereof |
| CN113411431B (en) * | 2021-07-21 | 2024-02-06 | 芜湖东信光电科技有限公司 | Ultrathin flexible cover plate and production method thereof |
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| Publication number | Publication date |
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| KR20200002089U (en) | 2020-09-23 |
| TWM590097U (en) | 2020-02-01 |
| DE202019103458U1 (en) | 2019-08-30 |
| CN210211596U (en) | 2020-03-31 |
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