TW202143503A - Electronic device - Google Patents
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- TW202143503A TW202143503A TW109133594A TW109133594A TW202143503A TW 202143503 A TW202143503 A TW 202143503A TW 109133594 A TW109133594 A TW 109133594A TW 109133594 A TW109133594 A TW 109133594A TW 202143503 A TW202143503 A TW 202143503A
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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
- G06V40/1324—Sensors therefor by using geometrical optics, e.g. using prisms
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
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Abstract
Description
本發明是有關於一種感測模組,且特別是有關於一種含有指紋感測模組的電子裝置。The present invention relates to a sensing module, and more particularly to an electronic device containing a fingerprint sensing module.
目前屏下指紋模組由於有反射的光源,會造成人眼看到顯示面板下的指紋感測模組,使手機整體美觀受影響。在目前的習知技術中,將指紋感測模組放置在距離顯示面板較遠處,藉此以使得指紋感測模組較不容易由顯示面板外露。然而,此一作法會增加手機的厚度。At present, because the fingerprint module under the screen has a reflective light source, the human eye will see the fingerprint sensor module under the display panel, which affects the overall appearance of the mobile phone. In the current conventional technology, the fingerprint sensing module is placed far away from the display panel, so that the fingerprint sensing module is less likely to be exposed from the display panel. However, this approach will increase the thickness of the phone.
本發明提供一種電子裝置,可避免指紋感測模組的外觀由顯示面板外露的現象,同時提升感測光束邊緣處的光強度,進而提升感測效果。The present invention provides an electronic device, which can avoid the phenomenon that the appearance of the fingerprint sensing module is exposed from the display panel, and at the same time increase the light intensity at the edge of the sensing beam, thereby improving the sensing effect.
本發明提供一種電子裝置,包括指紋感測模組、透光層、複合吸收層以及顯示面板。指紋感測模組適於感測由手指所反射的感測光束。指紋感測模組包括至少一感光元件。透光層配置於指紋感測模組。複合吸收層配置於透光層。複合吸收層包括低穿透部以及高穿透部。顯示面板配置於透光層,適於提供照明光束至手指以反射出感測光束,其中高穿透部位於複合吸收層的周圍處,且低穿透部位於複合吸收層的中央處。The invention provides an electronic device including a fingerprint sensing module, a light-transmitting layer, a composite absorption layer and a display panel. The fingerprint sensing module is suitable for sensing the sensing light beam reflected by the finger. The fingerprint sensing module includes at least one photosensitive element. The light-transmitting layer is configured on the fingerprint sensing module. The composite absorption layer is disposed on the light-transmitting layer. The composite absorbent layer includes a low-penetration part and a high-penetration part. The display panel is disposed on the light-transmitting layer and is suitable for providing an illuminating light beam to the finger to reflect the sensing light beam, wherein the high-penetration part is located around the composite absorption layer, and the low-penetration part is located at the center of the composite absorption layer.
基於上述,在本發明的電子裝置中,指紋感測模組上方配置有透光層以及複合吸收層。複合吸收層包括低穿透部以及高穿透部,且高穿透部位於複合吸收層的周圍處,低穿透部位於複合吸收層的中央處。因此,當感測光束由手指反射並傳遞通過複合吸收層時,感測光束在高穿透部的穿透率將高於在低穿透部的穿透率。如此一來,可使中心處光強度較邊緣處光強度大的感測光束,在傳遞通過複合吸收層得到均勻化的效果,進一步提升感測光束邊緣處的光強度,從而提升感測效果。同時可避免指紋感測模組的外觀由顯示面板外露的現象。Based on the above, in the electronic device of the present invention, a light-transmitting layer and a composite absorption layer are disposed above the fingerprint sensing module. The composite absorption layer includes a low penetration portion and a high penetration portion, and the high penetration portion is located around the composite absorption layer, and the low penetration portion is located at the center of the composite absorption layer. Therefore, when the sensing beam is reflected by the finger and passed through the composite absorption layer, the penetration rate of the sensing beam in the high penetration portion will be higher than the penetration rate in the low penetration portion. In this way, the sensing beam with greater light intensity at the center than at the edge can be homogenized when passing through the composite absorption layer, and the light intensity at the edge of the sensing beam is further improved, thereby enhancing the sensing effect. At the same time, it can prevent the appearance of the fingerprint sensor module from being exposed from the display panel.
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 comprehensible, the following specific embodiments are described in detail in conjunction with the accompanying drawings.
圖1為本發明一實施例的電子裝置的剖面示意圖。本實施例提供一種電子裝置100,包括指紋感測模組110、透光層120、複合吸收層130以及顯示面板140。本實施例的電子裝置100為屏下指紋辨識裝置,例如是智慧型手機、平板電腦、筆記型電腦或觸控型顯示裝置等,適於感測出使用者的手指20的生物辨識資訊,本發明並不限於此。FIG. 1 is a schematic cross-sectional view of an electronic device according to an embodiment of the invention. This embodiment provides an
指紋感測模組110配置於堆疊結構中的最下方,適於接收由手指20所反射的感測光束L2,以進行指紋辨識。在本實施例中,指紋感測模組100為超薄結構,其厚度僅約300微米,故可應用於薄型的電子裝置100中。The
具體而言,在本實施例中,指紋感測模組110包括了軟性電路板、感光元件、電路結構、封裝結構以及加強件(未顯示)。其中,感光元件電性連接於軟性電路板,且藉由封裝結構與加強件完成模組封裝結構。其詳細結構及實施方式可以由所屬技術領域的通常知識獲致足夠的教示、建議與實施說明,因此不再贅述。Specifically, in this embodiment, the
透光層120配置於指紋感測模組110上方,適於讓感測光束L2通過。在本實施例中,透光層120由高折射率材料製作而成,其折射率例如大於1.5。在一些實施例中,透光層120可具有圖案(未顯示),以藉由不同的圖案設計,提高離中心位置較遠的光強度,進而增加指紋感測時邊緣感測光亮度不足的問題。因此,由手指20所反射出的感測光束L2傳遞至指紋感測模組110時,由指紋感測模組110所反射的部分光線將傳遞至透光層120,並藉由高折射率的光學特性而產生全反射,以避免光線再次射回顯示面板140。如此一來,可避免指紋感測模組110的外觀由顯示面板140外露的現象。The light-transmitting
顯示面板140配置於透光層120,適於提供照明光束L1至手指20以反射出感測光束L2。在本實施例中,顯示面板140例如為有機發光二極體(organic light-emitting diode, OLED)顯示面板。然而,在其他實施例中,顯示面板140亦可以選擇液晶顯示面板或其他適當的顯示面板,本發明並不限於此。The
圖2A至圖2D分別為不同實施例的複合吸收層的示意圖。請先參考圖1及圖2A。複合吸收層130配置於透光層120。具體而言,複合吸收層130形成於透光層120的上方或下方。在本實施例中,複合吸收層130例如是以鍍膜方式形成於透光層下方。換句話說,複合吸收層130位於透光層120與指紋感測模組110之間。詳細而言,複合吸收層130包括低穿透部132以及高穿透部134,其中高穿透部134位於複合吸收層130的周圍處,且低穿透部132位於複合吸收層130的中央處。換句話說,低穿透部132圍繞高穿透部134,且低穿透部132為環狀分布,如圖2A所顯示。在不同的實施例中,低穿透部132及高穿透部134可選用相同或不同的材料製作,但本發明並不限於此。而在另一實施例中,低穿透部132的厚度可設計大於高穿透部134的厚度,藉此結構設計調整穿透率差異,本發明亦不限於此。換句話說,在不同的實施例中,低穿透部132及高穿透部134可依需求調整材料、圖案、厚度,藉此達到不同的折射率。2A to 2D are schematic diagrams of composite absorption layers of different embodiments, respectively. Please refer to Figure 1 and Figure 2A first. The
當感測光束L2由手指20反射並傳遞通過複合吸收層130時,感測光束L2在高穿透部134的穿透率將高於在低穿透部132的穿透率。因此,可使中心處光強度較邊緣處光強度大的感測光束L2,在傳遞通過複合吸收層130得到均勻化的效果,進一步提升感測光束L2邊緣處的光強度,從而提升感測效果,同時可避免指紋感測模組110的外觀由顯示面板140外露的現象。When the sensing light beam L2 is reflected by the
請參考圖2B至圖2D。在不同的實施例中,複合吸收層可依情況設計為不同形狀,以適配於不同種類的指紋感測模組或電子裝置。在圖2B、圖2C及圖2D的實施例中,複合吸收層130A、130B、130D可分別設計為橢圓形、正方形、矩形,但本發明並不限於此。Please refer to Figure 2B to Figure 2D. In different embodiments, the composite absorption layer can be designed in different shapes according to the situation to adapt to different types of fingerprint sensing modules or electronic devices. In the embodiments of FIG. 2B, FIG. 2C, and FIG. 2D, the
圖3為本發明另一實施例的電子裝置的剖面示意圖。請參考圖3。本實施例的電子裝置100A類似於圖1所顯示的電子裝置100。兩者不同之處在於,在本實施例中,透光層120A包括中央部122以及周圍部124。中央部122的位置對應於低穿透部132,且周圍部124的位置對應於高穿透部134。在本實施例中,周圍部124的厚度與中央部122的厚度不同。舉例而言,在本實施例中周圍部124的厚度大於中央部122的厚度。如此一來,可更進一步提升邊緣處感測光束的光強度,同時可避免指紋感測模組110的外觀由顯示面板140外露的現象。3 is a schematic cross-sectional view of an electronic device according to another embodiment of the invention. Please refer to Figure 3. The
綜上所述,在本發明的電子裝置中,指紋感測模組上方配置有透光層以及複合吸收層。複合吸收層包括低穿透部以及高穿透部,且高穿透部位於複合吸收層的周圍處,低穿透部位於複合吸收層的中央處。因此,當感測光束由手指反射並傳遞通過複合吸收層時,感測光束在高穿透部的穿透率將高於在低穿透部的穿透率。如此一來,可使中心處光強度較邊緣處光強度大的感測光束,在傳遞通過複合吸收層得到均勻化的效果,進一步提升感測光束邊緣處的光強度,從而提升感測效果,同時可避免指紋感測模組的外觀由顯示面板外露的現象。In summary, in the electronic device of the present invention, a light-transmitting layer and a composite absorption layer are disposed above the fingerprint sensing module. The composite absorption layer includes a low penetration portion and a high penetration portion, and the high penetration portion is located around the composite absorption layer, and the low penetration portion is located at the center of the composite absorption layer. Therefore, when the sensing beam is reflected by the finger and passed through the composite absorption layer, the penetration rate of the sensing beam in the high penetration portion will be higher than the penetration rate in the low penetration portion. In this way, the sensing beam with higher light intensity at the center than at the edge can be homogenized when passing through the composite absorption layer, and the light intensity at the edge of the sensing beam is further improved, thereby enhancing the sensing effect. At the same time, it can prevent the appearance of the fingerprint sensor module from being exposed from the display panel.
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 in the above embodiments, it is not intended to limit the present 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. The scope of protection of the present invention shall be subject to those defined by the attached patent scope.
20:手指
100,100A:電子裝置
110:指紋感測模組
120,120A:透光層
122:中央部
124:周圍部
130,130A,130B,130C:複合吸收層
132:低穿透部
134:高穿透部
140:顯示面板
L1:照明光束
L2:感測光束20:
圖1為本發明一實施例的電子裝置的剖面示意圖。 圖2A至圖2D分別為不同實施例的複合吸收層的示意圖。 圖3為本發明另一實施例的電子裝置的剖面示意圖。FIG. 1 is a schematic cross-sectional view of an electronic device according to an embodiment of the invention. 2A to 2D are schematic diagrams of composite absorption layers of different embodiments, respectively. 3 is a schematic cross-sectional view of an electronic device according to another embodiment of the invention.
20:手指20: fingers
100:電子裝置100: electronic device
110:指紋感測模組110: Fingerprint sensor module
120:透光層120: light-transmitting layer
130:複合吸收層130: Composite absorption layer
132:低穿透部132: Low penetration part
134:高穿透部134: High Penetration Department
140:顯示面板140: display panel
L1:照明光束L1: Illumination beam
L2:感測光束L2: Sensing beam
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