TWI777114B - Under-screen fingerprint identification device - Google Patents
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本發明是有關於一種電子裝置,且特別是有關於一種屏下指紋辨識裝置。 The present invention relates to an electronic device, and more particularly, to an under-screen fingerprint identification device.
為了提高顯示器的屏占比,屏下指紋感測技術已成為趨勢。簡單來說,屏下指紋感測技術乃是將指紋感測器配置在電子裝置的顯示螢幕的下方。在電子裝置偵測到使用者接觸顯示螢幕後,電子裝置會控制顯示螢幕發光以照亮使用者的手指表面。光線可經由使用者的手指反射進入顯示螢幕下方的指紋感測器,並由指紋感測器將反射光線轉換為數位影像信號,即可得到使用者指紋影像。 In order to increase the screen-to-body ratio of displays, under-screen fingerprint sensing technology has become a trend. To put it simply, the under-screen fingerprint sensing technology is to dispose the fingerprint sensor under the display screen of the electronic device. After the electronic device detects that the user touches the display screen, the electronic device controls the display screen to emit light to illuminate the surface of the user's finger. The light can be reflected by the user's finger and enter the fingerprint sensor under the display screen, and the reflected light can be converted into a digital image signal by the fingerprint sensor to obtain the fingerprint image of the user.
然而,在目前的發展中,具有屏下指紋感測技術的可攜式電子裝置較厚,堆疊較高。若需保持相鄰畫素間光學互不干涉,通常膜層堆疊的厚度需達到將近200微米。此外,為了減少畫素間光學干涉,製程中的光罩也較難製作。 However, in the current development, the portable electronic device with the under-screen fingerprint sensing technology is thicker and the stacking is higher. In order to maintain optical non-interference between adjacent pixels, the thickness of the film stack usually needs to reach nearly 200 microns. In addition, in order to reduce optical interference between pixels, the photomask in the process is also difficult to fabricate.
本發明提供一種屏下指紋辨識裝置,可減少體積且避免畫素間光學互相干涉。 The present invention provides an under-screen fingerprint identification device, which can reduce the volume and avoid optical mutual interference between pixels.
本發明的提供一種屏下指紋辨識裝置,適於感測一手指。屏下指紋辨識裝置包括一影像感測模組以及一顯示模組。影像感測模組包括一感測層、一透光層、一第一遮光層、一第二遮光層以及一微透鏡層。感測層包括多個感測畫素。透光層配置於感測層。第一遮光層配置於透光層,具有多個第一開口。第二遮光層配置於透光層,具有多個第二開口。微透鏡層配置於透光層,包括多個微透鏡。顯示模組配置於影像感測模組,其中第一遮光層位於第二遮光層與感測層之間。第二遮光層位於微透鏡層與第一遮光層之間。在垂直方向上,第一開口的位置對齊於第二開口的位置以及至少一部份感測畫素的位置。 The present invention provides an under-screen fingerprint identification device suitable for sensing a finger. The under-screen fingerprint identification device includes an image sensing module and a display module. The image sensing module includes a sensing layer, a light-transmitting layer, a first light-shielding layer, a second light-shielding layer, and a microlens layer. The sensing layer includes a plurality of sensing pixels. The light-transmitting layer is disposed on the sensing layer. The first light-shielding layer is disposed on the light-transmitting layer and has a plurality of first openings. The second light-shielding layer is disposed on the light-transmitting layer and has a plurality of second openings. The microlens layer is disposed on the light-transmitting layer and includes a plurality of microlenses. The display module is disposed in the image sensing module, wherein the first light shielding layer is located between the second light shielding layer and the sensing layer. The second light shielding layer is located between the microlens layer and the first light shielding layer. In the vertical direction, the position of the first opening is aligned with the position of the second opening and the position of at least a part of the sensing pixels.
在本發明的一實施例中,上述的第一開口的尺寸相同於第二開口的尺寸。 In an embodiment of the present invention, the size of the first opening is the same as the size of the second opening.
在本發明的一實施例中,上述的微透鏡的曲率半徑與微透鏡的曲面頂點至感測畫素的收光面的距離呈正比。 In an embodiment of the present invention, the radius of curvature of the microlens is proportional to the distance from the vertex of the curved surface of the microlens to the light-receiving surface of the sensing pixel.
在本發明的一實施例中,上述的屏下指紋辨識裝置還包括一紅外濾光層,適於吸收紅外光,形成於微透鏡層。微透鏡層位於紅外濾光層與透光層之間。 In an embodiment of the present invention, the above-mentioned under-screen fingerprint identification device further includes an infrared filter layer suitable for absorbing infrared light and formed on the microlens layer. The microlens layer is located between the infrared filter layer and the light transmission layer.
在本發明的一實施例中,上述的屏下指紋辨識裝置還包 括一紅外濾光層,適於吸收紅外光,形成於第二遮光層及透光層上。 In an embodiment of the present invention, the above-mentioned under-screen fingerprint identification device further includes: An infrared filter layer is included, which is suitable for absorbing infrared light, and is formed on the second light-shielding layer and the light-transmitting layer.
在本發明的一實施例中,上述的紅外濾光層隔開透光層與第二遮光層。 In an embodiment of the present invention, the above-mentioned infrared filter layer separates the light-transmitting layer and the second light-shielding layer.
在本發明的一實施例中,上述的部份紅外濾光層位於第二開口中。 In an embodiment of the present invention, the above-mentioned part of the infrared filter layer is located in the second opening.
在本發明的一實施例中,上述的屏下指紋辨識裝置還包括一紅外濾光層,適於吸收紅外光,形成於第一遮光層。 In an embodiment of the present invention, the above-mentioned under-screen fingerprint identification device further includes an infrared filter layer suitable for absorbing infrared light and formed on the first light shielding layer.
在本發明的一實施例中,上述的紅外濾光層隔開感測層與第一遮光層。 In an embodiment of the present invention, the above-mentioned infrared filter layer separates the sensing layer and the first light shielding layer.
在本發明的一實施例中,上述的部份紅外濾光層位於第一開口中。 In an embodiment of the present invention, the above-mentioned part of the infrared filter layer is located in the first opening.
在本發明的一實施例中,上述的透光層包括一第一透光層及一第二透光層。 In an embodiment of the present invention, the above-mentioned transparent layer includes a first transparent layer and a second transparent layer.
在本發明的一實施例中,上述的屏下指紋辨識裝置還包括一紅外濾光層,適於吸收紅外光,形成於第一透光層與第二透光層之間。 In an embodiment of the present invention, the above-mentioned under-screen fingerprint identification device further includes an infrared filter layer suitable for absorbing infrared light and formed between the first transparent layer and the second transparent layer.
在本發明的一實施例中,上述的紅外濾光層隔開第一透光層與第一遮光層。 In an embodiment of the present invention, the above-mentioned infrared filter layer separates the first light-transmitting layer and the first light-shielding layer.
基於上述,在本發明的屏下指紋辨識裝置中,影像感測模組配置於顯示模組下方,且影像感測模組包括在垂直方向上第 一開口的位置對齊於第二開口的位置的第一遮光層及第二遮光層。因此使用者手指所反射感測光可通過微透鏡層產生聚焦作用,並藉由第二遮光層及第一遮光層傳遞至不同位置的感測畫素。如此一來,可有效減少體積,並且避免畫素間光學互相干涉。 Based on the above, in the under-screen fingerprint identification device of the present invention, the image sensing module is disposed below the display module, and the image sensing module includes a first The position of an opening is aligned with the first light shielding layer and the second light shielding layer at the position of the second opening. Therefore, the sensing light reflected by the user's finger can be focused through the microlens layer and transmitted to the sensing pixels at different positions through the second light shielding layer and the first light shielding layer. In this way, the volume can be effectively reduced, and the optical interference between the pixels can be avoided.
為讓本發明的上述特徵和優點能更明顯易懂,下文特舉實施例,並配合所附圖式作詳細說明如下。 In order to make the above-mentioned features and advantages of the present invention more obvious and easy to understand, the following embodiments are given and described in detail with the accompanying drawings as follows.
10:手指 10: Fingers
50:屏下指紋辨識裝置 50: Under-screen fingerprint recognition device
100~100N:影像感測模組 100~100N: Image sensor module
110:感測層 110: Sensing layer
120、120A:透光層 120, 120A: transparent layer
122:第一透光層 122: the first transparent layer
124:第二透光層 124: The second light-transmitting layer
130、130A:第一遮光層 130, 130A: the first light shielding layer
140、140A:第二遮光層 140, 140A: the second light shielding layer
150:微透鏡層 150: Micro lens layer
160、160A、160B、160C:紅外濾光層 160, 160A, 160B, 160C: Infrared filter layer
200:顯示模組 200: Display module
D:距離 D: distance
N1:第一開口 N1: The first opening
N2:第二開口 N2: Second opening
M:微透鏡 M: Micro lens
P:感測畫素 P: Sensing pixel
R:曲率半徑 R: radius of curvature
圖1A為本發明一實施例的屏下指紋辨識裝置的剖面示意圖。 1A is a schematic cross-sectional view of an under-screen fingerprint identification device according to an embodiment of the present invention.
圖1B為圖1A的屏下指紋辨識裝置中A區域的放大示意圖。 FIG. 1B is an enlarged schematic view of area A in the under-screen fingerprint identification device of FIG. 1A .
圖2為本發明另一實施例的屏下指紋辨識裝置的剖面示意圖。 2 is a schematic cross-sectional view of an under-screen fingerprint identification device according to another embodiment of the present invention.
圖3為本發明另一實施例的屏下指紋辨識裝置的剖面示意圖。 3 is a schematic cross-sectional view of an under-screen fingerprint identification device according to another embodiment of the present invention.
圖4為本發明另一實施例的屏下指紋辨識裝置的剖面示意圖。 4 is a schematic cross-sectional view of an under-screen fingerprint identification device according to another embodiment of the present invention.
圖5為本發明另一實施例的屏下指紋辨識裝置的剖面示意圖。 5 is a schematic cross-sectional view of an under-screen fingerprint identification device according to another embodiment of the present invention.
圖6為本發明另一實施例的屏下指紋辨識裝置的剖面示意圖。 6 is a schematic cross-sectional view of an under-screen fingerprint identification device according to another embodiment of the present invention.
圖7為本發明另一實施例的屏下指紋辨識裝置的剖面示意圖。 7 is a schematic cross-sectional view of an under-screen fingerprint identification device according to another embodiment of the present invention.
圖8為本發明另一實施例的屏下指紋辨識裝置的剖面示意圖。 8 is a schematic cross-sectional view of an under-screen fingerprint identification device according to another embodiment of the present invention.
圖9為本發明另一實施例的屏下指紋辨識裝置的剖面示意圖。 9 is a schematic cross-sectional view of an under-screen fingerprint identification device according to another embodiment of the present invention.
圖10為本發明另一實施例的屏下指紋辨識裝置的剖面示意圖。 10 is a schematic cross-sectional view of an under-screen fingerprint identification device according to another embodiment of the present invention.
圖11為本發明另一實施例的屏下指紋辨識裝置的剖面示意圖。 11 is a schematic cross-sectional view of an under-screen fingerprint identification device according to another embodiment of the present invention.
圖12為本發明另一實施例的屏下指紋辨識裝置的剖面示意圖。 12 is a schematic cross-sectional view of an under-screen fingerprint identification device according to another embodiment of the present invention.
圖13為本發明另一實施例的屏下指紋辨識裝置的剖面示意圖。 13 is a schematic cross-sectional view of an under-screen fingerprint identification device according to another embodiment of the present invention.
圖14為本發明另一實施例的屏下指紋辨識裝置的剖面示意圖。 14 is a schematic cross-sectional view of an under-screen fingerprint identification device according to another embodiment of the present invention.
圖15為本發明另一實施例的屏下指紋辨識裝置的剖面示意圖。 15 is a schematic cross-sectional view of an under-screen fingerprint identification device according to another embodiment of the present invention.
圖1A為本發明一實施例的屏下指紋辨識裝置的剖面示意圖。請參考圖1A。本實施例提供一種屏下指紋辨識裝置50,適
於感測一手指10。屏下指紋辨識裝置50包括一影像感測模組100以及一顯示模組200,其中顯示模組200配置於影像感測模組100的上方。因此,在進行屏下指紋辨識時,使用者可將手指10放置於顯示模組200上,並藉由位於顯示模組200下方的影像感測模組100接收手指10所反射感測光以進行指紋辨識。感測光可由顯示模組200或額外配置的光源提供,本發明並不限於此。
1A is a schematic cross-sectional view of an under-screen fingerprint identification device according to an embodiment of the present invention. Please refer to Figure 1A. This embodiment provides an under-screen fingerprint identification device 50, which is suitable for
for sensing a
詳細而言,顯示模組200例如是有機發光二極體(organic light-emitting diode,OLED)顯示面板、發光二極體(light-emitting diode,LED)顯示面板、微發光二極體(micro light-emitting diode,Micro LED)顯示面板或次毫米發光二極體(mini light-emitting diode,Mini LED)顯示面板,但本發明並不限於此。
Specifically, the
影像感測模組100包括一感測層110、一透光層120、一第一遮光層130、一第二遮光層140以及一微透鏡層150。感測層110包括多個感測畫素P,適於朝向顯示模組200的一側收光。多個感測畫素P可連續或不連續排列,本發明並不限於此。
The
透光層120配置於感測層110,以覆蓋感測層110。透光層120適於讓手指10所反射的感測光通過。透光層120的折射率例如介於1.3至1.8之間,或者是,適於通過透光層120的光波長例如介於380nm至780nm之間,但本發明並不限於此。在不同的實施例中,透光層120可依據製程手段而配置為多層,本發明並不限於此。在本實施例中,透光層120的厚度可依據對影像品質
要求而做調整,將由後續段落中詳細說明。
The light-transmitting
第一遮光層130配置於透光層120,具有多個第一開口N1。而第二遮光層140也同樣配置於透光層120,且具有多個第二開口N2。第一遮光層130位於第二遮光層140與感測層110之間,且在垂直方向上,第一遮光層130的第一開口N1的位置對齊於第二遮光層140的第二開口N2的位置以及至少一部份感測畫素P的位置。舉例而言,在本實施例中,每一第一開口N1的位置即分別對齊每一第二開口N2的位置,且同時分別對齊每一感測畫素P的位置。但在不同的實施例中,每一第一開口N1的位置可對齊於每多個感測畫素P的位置。此外,第一開口N1的尺寸相同於第二開口N2的尺寸。但在一些實施例中,第二開口N2的尺寸可略大於第一開口N1的尺寸,本發明亦不限於此。第一開口N1的直徑越小則影像品質越好,例如是介於1微米至50微米之間。第一遮光層130及第二遮光層140例如為黑色材料,且以貼附或鍍膜方式形成於其他構件的表面。
The first light-
微透鏡層150配置於透光層120上以覆蓋透光層120。微透鏡層150由多個微透鏡M排列所組成,且在本實施例中,每一微透鏡M對齊於不同的第一開口N1。在不同的實施例中,根據微透鏡M的高與寬設計,相鄰微透鏡M間可為相連或不相連,本發明並不限於此。在本實施例中,第二遮光層140位於透光層120與微透鏡層150之間,且透光層120位於第一遮光層130與第二
遮光層140之間。換句話說,由感測層110朝向顯示模組200的一側依序為感測層110、第一遮光層130、透光層120、第二遮光層140以及微透鏡層150。因此,手指10所反射感測光可通過微透鏡層150產生聚焦作用,並藉由第二遮光層140及第一遮光層130傳遞至不同位置的感測畫素P。如此一來,可有效減少體積,並且避免畫素間光學互相干涉。
The
值得一提的是,在本實施例中,相鄰感測畫素P的間距可依據指紋波峰的尺寸進一步設計。舉例而言,由奈奎斯特-夏農取樣定理(Nyquist-Shannon sampling theorem)可知,取樣空間頻率必須為至少兩倍以上於被取樣空間信號。換句話說,在本實施例中,可依據指紋波峰的間距週期(約介於0.1毫米至0.3毫米0.3之間)而計算出適當的感測畫素P間距週期可為5微米至150微米之間。舉例而言,在本實施例中,感測畫素P間距週期為25微米。因此,在本實施例中,第一遮光層130的第一開口N1、第二遮光層140的第二開口N2,以及微透鏡層150的微透鏡M的間距週期也同為25微米,但本發明並不限於此。
It is worth mentioning that, in this embodiment, the distance between adjacent sensing pixels P can be further designed according to the size of the fingerprint peaks. For example, according to the Nyquist-Shannon sampling theorem, the sampling spatial frequency must be at least twice that of the sampled spatial signal. In other words, in this embodiment, according to the pitch period of the fingerprint peaks (approximately between 0.1 mm and 0.3 mm and 0.3), it can be calculated that the appropriate sensing pixel P pitch period can be between 5 microns and 150 microns. between. For example, in this embodiment, the pitch period of the sensing pixels P is 25 microns. Therefore, in this embodiment, the first opening N1 of the first
圖1B為圖1A的屏下指紋辨識裝置中A區域的放大示意圖。請參考圖1B。另一方面,在本實施例中,微透鏡M的曲率半徑R與微透鏡M的曲面頂點至感測畫素P收光面的距離D的相對關係可用下列公式(1)表示:
其中,RM為微透鏡M的曲率半徑R;T為微透鏡M的曲面頂點至感測畫素P收光面的距離D;n為微透鏡M的折射率。 Wherein, RM is the radius of curvature R of the microlens M ; T is the distance D from the vertex of the curved surface of the microlens M to the light-receiving surface of the sensing pixel P; n is the refractive index of the microlens M.
換句話說,微透鏡M的曲率半徑R與微透鏡M的曲面頂點至感測畫素P收光面的距離D呈正比,並且,微透鏡M的曲面頂點至感測畫素P收光面的距離D可藉由設計透光層120的厚度加以調整。在一些實施例中,根據對影像品質的不同要求,距離D可設計介於理論長度乘上正負50%,本發明並不限於此。
In other words, the radius of curvature R of the microlens M is proportional to the distance D from the apex of the curved surface of the microlens M to the light-receiving surface of the sensing pixel P, and the apex of the curved surface of the microlens M to the light-receiving surface of the sensing pixel P The distance D can be adjusted by designing the thickness of the light-transmitting
圖2為本發明另一實施例的屏下指紋辨識裝置的剖面示意圖。請參考圖2。本實施例的影像感測模組100A類似於圖1所顯示的影像感測模組100。兩者不同之處在於,在本實施例中,影像感測模組100A還包括一紅外濾光層160,適於吸收紅外光,形成於微透鏡層150,而微透鏡層150位於紅外濾光層160與透光層120之間。詳細而言,紅外濾光層160以鍍膜方式形成於微透鏡層150中每個微透鏡M的彎曲表面上。如此一來,影像感測模組100A可進一步減少環境中紅外光的影響,進而提升屏下指紋辨識裝置50的感測光學品質。
2 is a schematic cross-sectional view of an under-screen fingerprint identification device according to another embodiment of the present invention. Please refer to Figure 2. The
圖3為本發明另一實施例的屏下指紋辨識裝置的剖面示意圖。請參考圖3。本實施例的影像感測模組100B類似於圖2所顯示的影像感測模組100A。兩者不同之處在於,在本實施例中,
形成第二遮光層140之後,將透光層120填充於第二遮光層140的第二開口N2中。換句話說,透光層120的頂面與第二遮光層140切齊。因此,可簡化配置透光層120的製程。詳細而言,在本實施例中,微透鏡M的曲面頂點至第二遮光層140的底面的距離約為4.7微米,且第二遮光層140的底面至感測層110頂面的距離約為30微米。
3 is a schematic cross-sectional view of an under-screen fingerprint identification device according to another embodiment of the present invention. Please refer to Figure 3. The
圖4為本發明另一實施例的屏下指紋辨識裝置的剖面示意圖。請參考圖4。本實施例的影像感測模組100C類似於圖2所顯示的影像感測模組100A。兩者不同之處在於,在本實施例中,第一遮光層130A的第一開口N1A的直徑小於圖2所顯示的第一遮光層130的第一開口N1的直徑,且第二遮光層140A的第二開口N2A的直徑小於圖2所顯示的第二遮光層140的第一開口N2的直徑。因此,可進一步減少相鄰畫素間的光學干涉,進而提升屏下指紋辨識裝置的感測光學品質。此外,遮光層開口的直徑的設計也可適配於不同解析度的感測元件(即感測層110中感測畫素P的尺寸或排列密度)中,進而使不同解析度的感測元件皆能感測適當的感測目標。
4 is a schematic cross-sectional view of an under-screen fingerprint identification device according to another embodiment of the present invention. Please refer to Figure 4. The
圖5為本發明另一實施例的屏下指紋辨識裝置的剖面示意圖。請參考圖5。本實施例的影像感測模組100D類似於圖2所顯示的影像感測模組100A。兩者不同之處在於,在本實施例中,在形成透光層120之後,將紅外濾光層160A形成透光層120上。
換句話說,即紅外濾光層160A隔開透光層120與第二遮光層140。因此,可進一步提升紅外濾光層160A的平坦度,進而簡化紅外濾光層160A的製程,且使得使用者在使用屏下指紋辨識裝置時有較佳的視覺外觀效果。
5 is a schematic cross-sectional view of an under-screen fingerprint identification device according to another embodiment of the present invention. Please refer to Figure 5. The
圖6為本發明另一實施例的屏下指紋辨識裝置的剖面示意圖。請參考圖6。本實施例的影像感測模組100E類似於圖2所顯示的影像感測模組100A。兩者不同之處在於,在本實施例中,在形成第二遮光層140之後,將紅外濾光層160B形成第二遮光層140及透光層120上。換句話說,即部份紅外濾光層160B位於第二開口N2中。因此,可進一步提升紅外濾光層160B的平坦度,進而簡化紅外濾光層160B的製程,且使得使用者在使用屏下指紋辨識裝置時有較佳的視覺外觀效果。
6 is a schematic cross-sectional view of an under-screen fingerprint identification device according to another embodiment of the present invention. Please refer to Figure 6. The
圖7為本發明另一實施例的屏下指紋辨識裝置的剖面示意圖。請參考圖7。本實施例的影像感測模組100F類似於圖2所顯示的影像感測模組100A。兩者不同之處在於,在本實施例中,透光層120A包括一第一透光層122及一第二透光層124,且紅外濾光層160C形成於第一透光層122及第二透光層124之間。換句話說,即紅外濾光層160C與第一遮光層120及第二遮光層140具有間隔。因此,可進一步提升紅外濾光層160C的平坦度,進而簡化紅外濾光層160C的製程,且使得使用者在使用屏下指紋辨識裝置時有較佳的視覺外觀效果。
7 is a schematic cross-sectional view of an under-screen fingerprint identification device according to another embodiment of the present invention. Please refer to Figure 7. The
圖8為本發明另一實施例的屏下指紋辨識裝置的剖面示意圖。請參考圖8。本實施例的影像感測模組100G類似於圖2所顯示的影像感測模組100A。兩者不同之處在於,在本實施例中,在形成第一遮光層130之後,將紅外濾光層160B形成第一遮光層130及感測層110上。換句話說,即部份紅外濾光層160B位於第一開口N1中。因此,可進一步提升紅外濾光層160B的平坦度,進而簡化紅外濾光層160B的製程,且使得使用者在使用屏下指紋辨識裝置時有較佳的視覺外觀效果。
8 is a schematic cross-sectional view of an under-screen fingerprint identification device according to another embodiment of the present invention. Please refer to Figure 8. The
圖9為本發明另一實施例的屏下指紋辨識裝置的剖面示意圖。請參考圖9。本實施例的影像感測模組100H類似於圖2所顯示的影像感測模組100A。兩者不同之處在於,在本實施例中,將紅外濾光層160A形成在感測層110上。換句話說,即紅外濾光層160A隔開感測層110與第一遮光層130。因此,可進一步提升紅外濾光層160A的平坦度,進而簡化紅外濾光層160A的製程,且使得使用者在使用屏下指紋辨識裝置時有較佳的視覺外觀效果。此外,在本實施例中,由於感測層110與紅外濾光層160A的材料皆為無機材料,故在製程上,紅外濾光層160A可以高溫方式鍍膜在感測層110上,進而提升鍍膜品質。
9 is a schematic cross-sectional view of an under-screen fingerprint identification device according to another embodiment of the present invention. Please refer to Figure 9. The
圖10為本發明另一實施例的屏下指紋辨識裝置的剖面示意圖。請參考圖10。本實施例的影像感測模組100I類似於圖2所顯示的影像感測模組100A。兩者不同之處在於,在本實施例中,
透光層120A包括一第一透光層122及一第二透光層124,且紅外濾光層160A形成於第一透光層122上。換句話說,即紅外濾光層160A隔開第一透光層122與第二透光層124。因此,可進一步提升紅外濾光層160A的平坦度,進而簡化紅外濾光層160A的製程,且使得使用者在使用屏下指紋辨識裝置時有較佳的視覺外觀效果。此外,在一些實施例中,感測層110的表面不一定為平坦表面,故先形成第一透光層122以作為平坦層將有助於提升紅外濾光層160A的平坦度。
10 is a schematic cross-sectional view of an under-screen fingerprint identification device according to another embodiment of the present invention. Please refer to Figure 10. The image sensing module 100I of this embodiment is similar to the
圖11為本發明另一實施例的屏下指紋辨識裝置的剖面示意圖。請參考圖11。本實施例的影像感測模組100J類似於圖2所顯示的影像感測模組100A。兩者不同之處在於,在本實施例中,透光層120A包括一第一透光層122及一第二透光層124,且紅外濾光層160B形成於第一遮光層130上。換句話說,即部份紅外濾光層160B位於第一開口N1中。因此,可進一步提升紅外濾光層160B的平坦度,進而簡化紅外濾光層160B的製程,且使得使用者在使用屏下指紋辨識裝置時有較佳的視覺外觀效果。
11 is a schematic cross-sectional view of an under-screen fingerprint identification device according to another embodiment of the present invention. Please refer to Figure 11. The
圖12為本發明另一實施例的屏下指紋辨識裝置的剖面示意圖。請參考圖12。本實施例的影像感測模組100K類似於圖2所顯示的影像感測模組100A。兩者不同之處在於,在本實施例中,透光層120A包括一第一透光層122及一第二透光層124,且第二遮光層140形成於第一透光層122與第二透光層124之間。因此,
可進一步使得使用者在使用屏下指紋辨識裝置時有較佳的視覺外觀效果。
12 is a schematic cross-sectional view of an under-screen fingerprint identification device according to another embodiment of the present invention. Please refer to Figure 12. The
圖13為本發明另一實施例的屏下指紋辨識裝置的剖面示意圖。圖14為本發明另一實施例的屏下指紋辨識裝置的剖面示意圖。圖15為本發明另一實施例的屏下指紋辨識裝置的剖面示意圖。請參考圖13至圖15。圖13至圖15的實施例的影像感測模組100L、100M、100N類似於圖12所顯示的影像感測模組100K。不同之處在於,在圖13至圖15的實施例中,在垂直方向上,影像感測模組100L、100M、100N的第一開口N1的位置錯位於第二開口N2的位置以及至少一部份感測畫素的位置。換句話說,第一遮光層130的第一開口N1可不對齊於第二遮光層140的第二開口N2。因此,影像感測模組100L、100M、100N可適於讓光線斜向進入。如此一來,影像感測模組100A可進一步減少環境中紅外光的影響,進而提升屏下指紋辨識裝置50的感測光學品質。
13 is a schematic cross-sectional view of an under-screen fingerprint identification device according to another embodiment of the present invention. 14 is a schematic cross-sectional view of an under-screen fingerprint identification device according to another embodiment of the present invention. 15 is a schematic cross-sectional view of an under-screen fingerprint identification device according to another embodiment of the present invention. Please refer to Figure 13 to Figure 15. The
綜上所述,在本發明的屏下指紋辨識裝置中,影像感測模組配置於顯示模組下方,且影像感測模組包括在垂直方向上第一開口的位置對齊於第二開口的位置的第一遮光層及第二遮光層。因此使用者手指所反射感測光可通過微透鏡層產生聚焦作用,並藉由第二遮光層及第一遮光層傳遞至不同位置的感測畫素。如此一來,可有效減少體積,並且避免畫素間光學互相干涉。 To sum up, in the under-screen fingerprint identification device of the present invention, the image sensing module is disposed below the display module, and the image sensing module includes a position of the first opening aligned with the second opening in the vertical direction. position of the first light shielding layer and the second light shielding layer. Therefore, the sensing light reflected by the user's finger can be focused through the microlens layer and transmitted to the sensing pixels at different positions through the second light shielding layer and the first light shielding layer. In this way, the volume can be effectively reduced, and the optical interference between the pixels can be avoided.
雖然本發明已以實施例揭露如上,然其並非用以限定本 發明,任何所屬技術領域中具有通常知識者,在不脫離本發明的精神和範圍內,當可作些許的更動與潤飾,故本發明的保護範圍當視後附的申請專利範圍所界定者為準。 Although the present invention has been disclosed above with the embodiments, it is not intended to limit the present invention. Invention, anyone with ordinary knowledge in the technical field can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be regarded as defined by the appended patent application scope as follows: allow.
10:手指10: Fingers
50:屏下指紋辨識裝置50: Under-screen fingerprint recognition device
100:影像感測模組100: Image sensor module
110:感測層110: Sensing layer
120:透光層120: transparent layer
130:第一遮光層130: The first shading layer
140:第二遮光層140: Second shading layer
150:微透鏡層150: Micro lens layer
200:顯示模組200: Display module
N1:第一開口N1: The first opening
N2:第二開口N2: Second opening
M:微透鏡M: Micro lens
P:感測畫素P: Sensing pixel
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TW201919852A (en) * | 2017-08-31 | 2019-06-01 | 日商索尼半導體解決方案公司 | Laminated lens structure, solid-state imaging element, and electronic apparatus |
CN209560569U (en) * | 2019-02-14 | 2019-10-29 | 金佶科技股份有限公司 | Photosensitive module and image capturing device |
CN209640882U (en) * | 2018-02-23 | 2019-11-15 | 深圳市汇顶科技股份有限公司 | Optical sensor arrangement and electronic equipment |
TWI680397B (en) * | 2018-04-03 | 2019-12-21 | 薛英家 | Sensor board and display with sensor board |
TWM595262U (en) * | 2019-12-26 | 2020-05-11 | 敦捷光電股份有限公司 | Under-screen fingerprint identification device |
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TW201919852A (en) * | 2017-08-31 | 2019-06-01 | 日商索尼半導體解決方案公司 | Laminated lens structure, solid-state imaging element, and electronic apparatus |
CN209640882U (en) * | 2018-02-23 | 2019-11-15 | 深圳市汇顶科技股份有限公司 | Optical sensor arrangement and electronic equipment |
TWI680397B (en) * | 2018-04-03 | 2019-12-21 | 薛英家 | Sensor board and display with sensor board |
CN209560569U (en) * | 2019-02-14 | 2019-10-29 | 金佶科技股份有限公司 | Photosensitive module and image capturing device |
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