TWI687852B - Electronic device - Google Patents
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本發明關於一種電子裝置,特別關於一種可應用於生物特徵辨識或生理參數量測功能的電子裝置。 The present invention relates to an electronic device, and in particular to an electronic device that can be applied to biometrics identification or physiological parameter measurement functions.
電子裝置,特別是行動電子裝置(例如手機、平板電腦等等),已是現代人生活中常用的工具之一。因此,在競爭激烈的電子裝置市場中,各家業者莫不以提高電子裝置的附加功能來提升產品的競爭力。 Electronic devices, especially mobile electronic devices (such as mobile phones, tablet computers, etc.), have become one of the commonly used tools in the lives of modern people. Therefore, in the fiercely competitive electronic device market, various companies can improve the competitiveness of products by improving the additional functions of electronic devices.
另外,於習知技術中,當要存取機密文件、個人資料或進出管制場所時,必須透過鑰匙、密碼、或門禁卡等來做為身份的驗証,但是,鑰匙或門禁卡可能會有遺失或遭複製的風險,而密碼則有可能會忘記或被其他人得知,造成安全上的疑慮。因此,生物特徵辨識便一直是個焦點話題。生物特徵辨識是利用每個人獨一無二的生理特徵來辨識使用者的身分。運用生物辨識技術,人的身體就是密碼,不需要記憶一長串不易記住的數字,也不怕遺失且不易複製,更不用擔心遭人盜用。因此,量測人類生理的獨一無二的生物特徵,來辨識使用者的身分,已成為安全科技的重要趨勢。以指紋為例,指紋是最具獨特性之生物特徵之一,其具備有準確度高的特點,因此,已成為生物特徵辨識的主要研究方向之一。 In addition, in the conventional technology, when accessing confidential documents, personal data, or entering and exiting a controlled place, you must use a key, password, or access card to verify your identity, but the key or access card may be lost There is a risk of being copied, and the password may be forgotten or learned by others, causing security concerns. Therefore, biometric identification has always been a focus topic. Biometrics identification uses the unique physiological characteristics of each person to identify the user's identity. Using biometrics, the human body is the password, there is no need to memorize a long list of numbers that are not easy to remember, nor are they afraid of being lost and difficult to copy, let alone being misappropriated. Therefore, measuring the unique biological characteristics of human physiology to identify the identity of users has become an important trend in safety technology. Taking fingerprints as an example, fingerprints are one of the most unique biological characteristics, which have the characteristics of high accuracy. Therefore, fingerprints have become one of the main research directions of biometric identification.
此外,近年來,由於高齡化及飲食習慣的改變,心血管疾病(例如腦中風)有逐年增加的趨勢而嚴重威脅人類的生命。根據近幾年醫學文獻的報導,脈搏以及血氧濃度(blood oxygen saturation)可以提供許多關於心血管方面的生理參數,因此,若能隨時量測脈搏以及血氧濃度等生理參數,對心血管疾病的預防有相當多的助益。 In addition, in recent years, due to aging and changes in dietary habits, cardiovascular diseases (such as stroke) have a tendency to increase year by year and seriously threaten human life. According to reports in the medical literature in recent years, pulse and blood oxygen saturation can provide many physiological parameters on the cardiovascular side. Therefore, if the physiological parameters such as pulse and blood oxygen concentration can be measured at any time, cardiovascular disease The prevention has a lot of benefits.
本發明之目的為提供一種可應用於生物特徵辨識或生理參 數量測功能的電子裝置。 The purpose of the present invention is to provide a biometric identification or physiological parameter Electronic device with measurement function.
為達上述目的,依據本發明之一種電子裝置,與一人體組織配合,電子裝置包括一本體。本體具有一感測區,感測區包含複數感測單元,各感測單元分別包含一驅動線、一訊號線、一訊號讀出線、一發光元件以及一光感測元件。訊號線與驅動線交錯設置。訊號讀出線與驅動線交錯設置。發光元件分別與驅動線及訊號線電連接,光感測元件分別與驅動線及訊號讀出線電連接。其中,發光元件發出一光線射向人體組織,且被光感測元件所接收而產生一感測訊號。 To achieve the above object, an electronic device according to the present invention cooperates with a human body tissue. The electronic device includes a body. The main body has a sensing area, and the sensing area includes a plurality of sensing units. Each sensing unit includes a driving line, a signal line, a signal readout line, a light emitting element, and a light sensing element. The signal line and the drive line are interleaved. The signal readout line and the drive line are interleaved. The light emitting element is electrically connected to the drive line and the signal line, respectively, and the light sensing element is electrically connected to the drive line and the signal readout line, respectively. Among them, the light emitting element emits a light to the human tissue and is received by the light sensing element to generate a sensing signal.
在一實施例中,發光元件為有機發光二極體或微發光二極體晶片。 In one embodiment, the light emitting element is an organic light emitting diode or a micro light emitting diode chip.
在一實施例中,光感測元件包含一金屬層、一絕緣層及一半導體層,絕緣層設置於金屬層與半導體層之間。 In one embodiment, the light sensing element includes a metal layer, an insulating layer, and a semiconductor layer. The insulating layer is disposed between the metal layer and the semiconductor layer.
在一實施例中,光感測元件包含一P型半導體層、一本質半導體層及一N型半導體層,本質半導體層設置於P型半導體層與N型半導體層之間。 In one embodiment, the light-sensing device includes a P-type semiconductor layer, an intrinsic semiconductor layer, and an N-type semiconductor layer. The intrinsic semiconductor layer is disposed between the P-type semiconductor layer and the N-type semiconductor layer.
在一實施例中,本體包含一顯示面板,顯示面板具有一顯示區及一週邊區,週邊區位於顯示區的外圍,且感測區位於顯示區內。 In one embodiment, the body includes a display panel. The display panel has a display area and a peripheral area. The peripheral area is located at the periphery of the display area, and the sensing area is located at the display area.
在一實施例中,顯示面板更具有複數掃描線、複數資料線及複數次畫素結構,該些掃描線與該些資料線交錯設置以定義出該些次畫素結構,驅動線為次畫素結構對應之掃描線,且訊號線為次畫素結構對應之資料線。 In one embodiment, the display panel further has a plurality of scan lines, a plurality of data lines, and a plurality of sub-pixel structures. The scan lines and the data lines are interleaved to define the sub-pixel structures, and the driving lines are sub-pictures. The scan lines corresponding to the pixel structure, and the signal lines are the data lines corresponding to the sub-pixel structure.
在一實施例中,本體包含一顯示面板,顯示面板具有一顯示區及一週邊區,週邊區位於顯示區的外圍,且感測區對應於週邊區。 In one embodiment, the body includes a display panel. The display panel has a display area and a peripheral area. The peripheral area is located at the periphery of the display area, and the sensing area corresponds to the peripheral area.
在一實施例中,各感測單元更包含一第一電晶體,第一電晶體具有一第一端、一第二端及一第三端,第一電晶體之第一端與驅動線連接,第一電晶體之第二端與訊號線連接,第一電晶體之第三端與發光元件的一端連接,發光元件的另一端與一第一電壓源連接。 In an embodiment, each sensing unit further includes a first transistor, the first transistor has a first end, a second end and a third end, the first end of the first transistor is connected to the driving line The second end of the first transistor is connected to the signal line, the third end of the first transistor is connected to one end of the light emitting element, and the other end of the light emitting element is connected to a first voltage source.
在一實施例中,各感測單元更包含一第二電晶體,第二電晶體具有一第一端、一第二端及一第三端,第二電晶體之第一端與驅動線連 接,第二電晶體之第二端與訊號讀出線連接,第二電晶體之第三端與光感測元件的一端連接,光感測元件的另一端與一第二電壓源連接。 In an embodiment, each sensing unit further includes a second transistor. The second transistor has a first end, a second end, and a third end. The first end of the second transistor is connected to the driving line Then, the second end of the second transistor is connected to the signal readout line, the third end of the second transistor is connected to one end of the light sensing element, and the other end of the light sensing element is connected to a second voltage source.
在一實施例中,電子裝置可應用於生物特徵辨識或生理參數量測,或應用於觸控位置的偵測。 In one embodiment, the electronic device can be applied to biometrics identification or physiological parameter measurement, or to the detection of touch position.
承上所述,因本發明之電子裝置中,本體具有一感測區,而感測區包含複數感測單元,各感測單元之訊號線與驅動線交錯設置,訊號讀出線與驅動線交錯設置。另外,各感測單元之發光元件分別與驅動線及訊號線電連接,而光感測元件分別與驅動線及訊號讀出線電連接;其中,發光元件發出一光線射向人體組織,且經反射、漫射、折射或繞射被光感測元件所接收而產生一感測訊號。藉此,使得本發明之電子裝置可具有生物特徵辨識或生理參數量測的功能。 As mentioned above, in the electronic device of the present invention, the body has a sensing area, and the sensing area includes a plurality of sensing units. The signal lines and the drive lines of each sensing unit are interleaved, and the signal readout line and the drive line Interlace settings. In addition, the light-emitting element of each sensing unit is electrically connected to the drive line and the signal line, respectively, and the light-sensing element is electrically connected to the drive line and the signal readout line, respectively; The reflection, diffusion, refraction or diffraction is received by the light sensing element to generate a sensing signal. In this way, the electronic device of the present invention can have functions of biometrics identification or physiological parameter measurement.
在一實施例中,可將生物特徵辨識或生理參數量測的感測電路於顯示面板之次畫素結構的製程中同時製作,因此,相較於習知於電子裝置上再另外設置生物特徵辨識或生理參數量測功能的偵測晶片而言,本發明除了有別於習知技術之外,更具有成本較低的優勢。此外,在另一實施例中,亦可將具有複數感測單元之電子裝置製作成晶片,並將該晶片(電子裝置)與有機發光二極體顯示面板(OLED)或微二極體(μ LED)顯示面板結合,使該晶片對應於有機發光二極體顯示面板(OLED)或微二極體(μ LED)顯示面板之週邊區後,再與一保護基板(玻璃)組合而成為另一電子裝置。 In one embodiment, the sensing circuits for biometrics identification or physiological parameter measurement can be fabricated simultaneously in the process of the sub-pixel structure of the display panel, therefore, compared with the conventional methods, additional biometrics are provided on the electronic device As far as the detection chip of the identification or physiological parameter measurement function is concerned, the present invention has the advantage of lower cost in addition to the conventional technology. In addition, in another embodiment, an electronic device having a plurality of sensing units may be fabricated into a wafer, and the wafer (electronic device) and an organic light-emitting diode display panel (OLED) or micro diode (μ) LED) display panel, so that the chip corresponds to the peripheral area of the organic light-emitting diode display panel (OLED) or micro-diode (μLED) display panel, and then combined with a protective substrate (glass) to become another Electronic device.
1、1a‧‧‧電子裝置 1. 1a‧‧‧Electronic device
11、11a‧‧‧顯示面板 11.11a‧‧‧Display panel
111‧‧‧發光元件 111‧‧‧Lighting element
112‧‧‧光感測元件 112‧‧‧Light sensing element
2‧‧‧人體組織 2‧‧‧Human tissue
A‧‧‧區域 A‧‧‧Region
AA‧‧‧顯示區 AA‧‧‧Display area
B、Ba‧‧‧本體 B、Ba‧‧‧Body
C‧‧‧半導體層 C‧‧‧Semiconductor layer
D‧‧‧驅動線 D‧‧‧Drive line
DL‧‧‧資料線 DL‧‧‧Data cable
I‧‧‧本質半導體層 I‧‧‧essential semiconductor layer
IL‧‧‧絕緣層 IL‧‧‧Insulation
L‧‧‧光線 L‧‧‧Light
M‧‧‧金屬層 M‧‧‧Metal layer
N‧‧‧N型半導體層 N‧‧‧N-type semiconductor layer
P‧‧‧P型半導體層 P‧‧‧P-type semiconductor layer
PA‧‧‧週邊區 PA‧‧‧ surrounding area
Px‧‧‧次畫素結構 Px‧‧‧ pixel structure
R‧‧‧訊號讀出線 R‧‧‧Signal readout line
S‧‧‧訊號線 S‧‧‧Signal line
SA‧‧‧感測區 SA‧‧‧sensing area
SL‧‧‧掃描線 SL‧‧‧scan line
SU‧‧‧感測單元 SU‧‧‧sensing unit
T1‧‧‧第一電晶體 T1‧‧‧ First transistor
T2‧‧‧第二電晶體 T2‧‧‧second transistor
Vdd‧‧‧第二電壓源 Vdd‧‧‧Second voltage source
Vss‧‧‧第一電壓源 Vss‧‧‧First voltage source
圖1A為本發明較佳實施例之一種電子裝置的示意圖。 FIG. 1A is a schematic diagram of an electronic device according to a preferred embodiment of the present invention.
圖1B為圖1A之電子裝置中,一實施態樣之感測單元的電路示意圖。 FIG. 1B is a schematic circuit diagram of a sensing unit according to an embodiment in the electronic device of FIG. 1A.
圖2A及圖2B分別為圖1B之光感測元件的不同結構示意圖。 2A and 2B are schematic diagrams of different structures of the light sensing device of FIG. 1B, respectively.
圖3A是本發明較佳實例之電子裝置進行生物特徵辨識或參數量測時之示意圖。 FIG. 3A is a schematic diagram of an electronic device of a preferred example of the present invention when performing biometric identification or parameter measurement.
圖3B為圖3A之一區域的放大示意圖。 FIG. 3B is an enlarged schematic view of one area of FIG. 3A.
圖4為本發明另一實施態樣之電子裝置的示意圖。 4 is a schematic diagram of an electronic device according to another embodiment of the present invention.
以下將參照相關圖式,說明依本發明較佳實施例之電子裝置,其中相同的元件將以相同的參照符號加以說明。 The electronic device according to the preferred embodiment of the present invention will be described below with reference to related drawings, in which the same elements will be described with the same reference symbols.
請參照圖1A所示,其為本發明較佳實施例之一種電子裝置1的示意圖。
Please refer to FIG. 1A, which is a schematic diagram of an
電子裝置1與一人體組織2配合。於此,所謂人體組織2是指人體皮膚,例如但不限於為一手指皮膚(也可為身體其他地方的組織皮膚),以透過電子裝置1辨識人體的生物特徵或進行人體生理參數的量測,或者,進行觸控位置的偵測。電子裝置1可為行動裝置(mobile device,例如手機、平板電腦、筆電、或超輕薄筆電,或其他行動電子裝置),或為穿戴式裝置(wearable device),或為固定式的電子裝置(例如機場海關用以辨識生物特徵的辨識裝置),並不限制。或者,在其他的實施例中,電子裝置1也可為一晶片(chip),並與其他的裝置或物件結合。舉例而言,電子裝置1可與另一電子裝置結合,使另一電子裝置(例如手機)具有辨識人體生物特徵或量測生理參數的功能。
The
本實施例的電子裝置1是以一智慧型手機,並以辨識人體指紋特徵(例如姆指或食指的指紋)為例。在其他的實施例中,也可利用電子裝置1進行人體生理參數的量測,例如可量測心跳次數或血氧濃度(藉由切換不同的驅動模式來得到量測生理參數或辨識生理特徵的功能)。
The
電子裝置1包括一本體B,本體B具有一感測區SA。顧名思義,感測區SA就是用以感測人體組織2的區域。另外,本實施例之本體B更包含一顯示面板11。於此,顯示面板11為一自發光顯示面板,例如但不限於為有機發光二極體顯示面板(OLED)或微二極體(μ LED)顯示面板,並可為主動式矩陣(Active Matrix)或被動式矩陣(Passive Matrix)顯示面板。本實施例之顯示面板11是以主動矩陣式有機發光二極體顯示面板為例。其中,顯示面板11(主動矩陣式有機發光二極體顯示面板)具有複數掃描線、複數資料線及複數次畫素(sub-pixel)結構(圖1A均未顯示),
該些掃描線與該些資料線交錯設置以定義出該些次畫素結構。
The
另外,顯示面板11具有一顯示區(顯示面板11中用以顯示影像的區域,即光線可透過的區域)AA及鄰接於顯示區AA之一週邊區PA(顯示面板11中不可顯示影像的區域),且本實施例之感測區SA是位於顯示區AA內,並位於顯示區AA下側的一特定區域。於應用上,當受測者要利用電子裝置1進行生物特徵辨識或生理參數量測時,顯示面板11之顯示區AA可顯示一特定區域,此特定區域即為進行辨識或量測的感測區SA。當受測者的手指壓在感測區SA時,可透過電子裝置1進行指紋辨識(例如進行解鎖或取得資料)、或進行心跳或血氧濃度等參數的量測。不過,在不同的實施例中,感測區SA也可位於週邊區PA內,以下會再說明。此外,本實施例之感測區SA的形狀與大小並不以圖1A所示為限,在不同的實施例中,感測區SA也可為顯示區AA內的其他位置、大小、尺寸,甚至整個顯示區AA都是感測區SA,本發明均不限制。特別提醒的是,在其他的實施例中,電子裝置的本體亦可不具有顯示面板,而是只在本體上配置有偵測生物特徵或生理參數的感測區,以透過電子裝置達到辨識生物特徵或生理參數量測的功能;或者,電子裝置本身就是一個晶片而具有感測區內的元件且設置於一載板上。
In addition, the
感測區SA包含複數個感測單元SU。由於本實施例之感測區SA位於顯示面板11的顯示區AA內,因此,電子裝置1並不另外結合生物特徵辨識或生理參數量測功能的辨識或偵測晶片,而是直接將生物特徵辨識或生理參數量之感測單元SU的電路於顯示面板11之次畫素結構製程中同時製作。因此,在本實施例中,於感測區SA內的每一個感測單元SU中,除了顯示面板11本身的次畫素結構的電路外(用於顯示畫面)外,更包含用以感測生物特徵或參數的電路結構(用於偵測生物特徵或參數)。
The sensing area SA includes a plurality of sensing units SU. Since the sensing area SA of this embodiment is located in the display area AA of the
請參照圖1B所示,其為圖1A之電子裝置1中,一實施態樣之感測單元SU的電路示意圖。於此,圖1B是顯示感測區SA中的一個感測單元SU之電路結構。
Please refer to FIG. 1B, which is a schematic circuit diagram of a sensing unit SU of an embodiment in the
如圖1B所示,各感測單元SU分別包含一驅動線D、一訊號線S、一訊號讀出線R、一發光元件111以及一光感測元件112。另外,
本實施例之感測單元SU更包含一第一電晶體T1及一第二電晶體T2。
As shown in FIG. 1B, each sensing unit SU includes a driving line D, a signal line S, a signal readout line R, a
訊號線S與驅動線D交錯設置,且訊號讀出線R亦與驅動線D交錯設置。另外,發光元件111分別與驅動線D及訊號線S電連接,且光感測元件112分別與驅動線D及訊號讀出線R電連接。發光元件111可為有機發光二極體(OLED)或微發光二極體晶片(uLED晶片)。本實施例之發光元件111是以有機發光二極體(OLED)為例。在另一實施例中,當顯示面板11為微二極體(μ LED)顯示面板時,發光元件111則為微發光二極體晶片(uLED晶片),並例如但不限於藉由導電膠將uLED晶片設置於基板上。
The signal line S and the drive line D are interleaved, and the signal readout line R is also interleaved with the drive line D. In addition, the
當人體組織2(例如食指)壓在感測區SA而進行偵測時,發光元件111可發出一光線L射向人體組織2,且經人體組織2反射、漫射、折射或繞射後之光線可被光感測元件112接收而產生一感測訊號,此感測訊號可由訊號讀出線R被讀出。當應用於指紋辨識、偵測心跳或血氧濃度時,可依需求選擇不同波長的光源。例如應用於指紋辨識時,光線L可選擇紅光、藍光、紅外光、或綠光,或其他顏色的光線。但應用於偵測心跳或血氧濃度時,光線L可例如但不限於為紅光與紅外光。
When the human tissue 2 (eg, index finger) is pressed against the sensing area SA for detection, the light-emitting
另外,請先參照圖2A及圖2B所示,其分別為圖1B之光感測元件112不同的結構示意圖。
In addition, please first refer to FIGS. 2A and 2B, which are schematic diagrams of different structures of the
如圖2A所示,光感測元件112由下而上依序可包含一金屬層M、一絕緣層IL及一半導體層C,且絕緣層IL設置於金屬層M與半導體層C之間。於此,是利用半導體層C照光或不照光,或照光程度的不同得到不同的光電流來進行感測。圖2A之光感測元件112由下而上依序為金屬-絕緣-半導體(Metal-Insulation-Semiconductor,MIS)結構,而且可利用顯示面板11之薄膜電晶體(TFT)製程來製作此結構,以節省顯示面板11的成本。換言之,當光感測元件112為MIS結構時,可利用顯示面板11原有薄膜電晶體(TFT)製程的光罩及黃光製程來製作光感測元件112,藉此可再降低電子裝置1的成本。
As shown in FIG. 2A, the light-
另外,如圖2B所示,本實施例之光感測元件112可包含一P型半導體層P、一本質半導體層(Intrinsic semiconductor layer,未摻雜之
半導體層)I及一N型半導體層N,而本質半導體層I設置於P型半導體層P與N型半導體層N之間。本實施例之光感測元件112由上而下依序為PIN結構,其材料例如可為非晶矽(Amorphous silicon)、砷化鎵(GaAs)、或其他半導體材料。於此,是利用本質半導體層I照光或不照光,或照光程度的不同得到不同的光電流來進行偵測。在其他的實施例中,光感測元件112由上而下也可依序為NIP結構,或只有PN的結構,並不限定。其中,在PN結構之間加入本質半導體層I,則可以提高光線的偵測度(光感測元件112可更靈敏)。
In addition, as shown in FIG. 2B, the
此外,在又一實施例中,光感測元件112亦可為一光敏元件,例如可為光二極體(photodiode)微晶片。
In addition, in another embodiment, the light-
請再參照圖1A及圖1B所示,由於本實施例之感測區SA位於顯示區AA內,因此,發光元件111即為顯示面板11之次畫素結構Px中的自發光元件(本實施例為有機發光二極體),而驅動線D即為次畫素結構Px對應之掃描線SL,且訊號線S為次畫素結構Px對應之資料線DL。
Please refer to FIGS. 1A and 1B again. Since the sensing area SA of this embodiment is located in the display area AA, the light-emitting
另外,第一電晶體T1具有一第一端(閘極)、一第二端(源極)及一第三端(汲極),第一電晶體T1之第一端與驅動線D(掃描線SL)連接,以受驅動線D(掃描線SL)的控制,第一電晶體T1之第二端與訊號線S(資料線DL)連接,而第一電晶體T1之第三端與發光元件111的一端(陽極)連接,且發光元件111的另一端(陰極)與一第一電壓源Vss連接。
In addition, the first transistor T1 has a first terminal (gate), a second terminal (source) and a third terminal (drain), the first terminal of the first transistor T1 and the driving line D (scan Line SL) is connected, under the control of the driving line D (scanning line SL), the second end of the first transistor T1 is connected to the signal line S (data line DL), and the third end of the first transistor T1 is connected to the light One end (anode) of the
第二電晶體T2具有一第一端(閘極)、一第二端(汲極)及一第三端(源極),第二電晶體T1之第一端與驅動線D(掃描線SL)連接,以受驅動線D(掃描線SL)的控制,第二電晶體T2之第二端與訊號讀出線R連接,而第二電晶體T3之第三端與光感測元件112的一端(陽極)連接,且光感測元件112的另一端(陰極)與一第二電壓源Vdd連接。上述的第一電晶體T1與第二電晶體T2可分別為一薄膜電晶體(TFT),並可利用顯示面板11之TFT製程同時製作。此外,再特別一提的是,圖1B之次畫素結構Px的電路只是舉例,其除了光感測元件112之外,只包含一個第一電晶體T1,不過,在不同的實施例中,除了光感測元件112之外,次
畫素結構Px也可包含二個電晶體與一個電容(2T1C電路),或包含三個電晶體與一個電容(3T1C電路),或包含具有電壓補償功能的5T2C或6T2C電路,本發明並不限制。
The second transistor T2 has a first end (gate), a second end (drain) and a third end (source), the first end of the second transistor T1 and the drive line D (scan line SL ) Connection, controlled by the drive line D (scanning line SL), the second end of the second transistor T2 is connected to the signal readout line R, and the third end of the second transistor T3 is connected to the
因此,當顯示面板1之該些次畫素結構Px的各掃描線SL(驅動線D)接收一掃描(驅動)訊號時可分別使各次畫素結構Px之掃描線SL(驅動線D)對應的之第一電晶體T1導通,並將對應每一行次畫素結構Px之一資料訊號藉由該些資料線DL(訊號線S)傳送至對應的該些次畫素結構Px之發光元件111,以驅動該些發光元件111發光而顯示影像。同時感測區SA內之各感測單元SU的發光元件111可發出光線L射向人體組織2(手指指紋)。同樣地,由於感測區SA之各感測單元SU的第二電晶體T2亦因驅動(掃描)訊號而導通,故被人體組織2反射、漫射、折射或繞射的光線可被光感測元件112接受而產生感測訊號,且透過訊號讀出線R將光感測元件112接收到感測訊號讀出。
Therefore, when each scanning line SL (driving line D) of the sub-pixel structures Px of the
特別注意的是,在不同的實施例中,可以感測區SA內的每一個次畫素結構Px都對應有光感測元件112,或者感測區SA中一部分的次畫素結構Px有對應的光感測元件112(例如感測區SA中,只有次畫素結構R(紅色)有對應的光感測元件112);又或者,三個次畫素結構R、G、B(紅色、綠色、藍色)只對應有一個光感測元件112,或者是其他種次畫素結構與光感測元件112的配合方式,本發明均不限制。
It is particularly noted that, in different embodiments, each sub-pixel structure Px in the sensing area SA corresponds to a light-
請參照圖3A及圖3B所示,其中,圖3A是本發明較佳實例之電子裝置進行生物特徵辨識或參數量測時之示意圖,而圖3B為圖3A之區域A的放大示意圖。 Please refer to FIGS. 3A and 3B. FIG. 3A is a schematic diagram of an electronic device of the present invention when performing biometric identification or parameter measurement, and FIG. 3B is an enlarged schematic diagram of area A of FIG. 3A.
由於指紋具有高低不平的凹凸紋路,而且發光元件111發出的光線L射向指紋的凹凸紋路時,被凹凸紋路反射、漫射、折射或繞射後的不同強弱光線可被光感測元件112所接收而產生不同的光電流(感測訊號),再由訊號讀出線R將不同光電流的感測訊號讀出後,再與電子裝置1內部預存的感測訊號(對應於預存指紋,於偵測前事先設定)進行比對。當得到的該些感測訊號與預存的訊號相同時,則電子裝置1可進行例如解鎖或資料存取等後續動作,以達到透過電子裝置1進行生物特徵辨識的目
的。
Since the fingerprint has uneven rugged lines, and the light L emitted from the
在另一實施例中,當電子裝置1應用於量測心跳或血氧濃度等參數功能時,發光元件111同樣發出光線L射向手指皮膚,經手指皮膚的反射、漫射、折射或繞射後的不同的光電流(感測訊號)同樣可被光感測元件112所接收。其中,由光感測元件112接收的感測訊號為一光體積變化訊號(Photoplethysmography,PPG),並由訊號讀出線R被讀出。由於人體脈搏產生時,全身血管的血流量亦會產生變化,代表血管內的血紅素及去氧血紅素的含量也會改變。其中,血紅素及去氧血紅素對於特殊波長的光線具有相當敏感的特性(例如:紅光與紅外光),因此若以發光元件111發出光線L(例如可為紅光、紅外光或綠光)射向手指皮膚底下的組織及血管,然後以光感測元件112接收反射或穿透過皮膚的光線,透過接收回來的光線強弱,可得到血管內血流變化的情形,這種變化稱之為光體積變化信號。PPG是一種因血液循環系統而產生的物理量,當心臟在收縮及舒張時,血管內單位面積的血流量會造成週期性的變化。由於PPG信號變化是因心臟搏動造成,因此,光感測元件112所接收的反射、漫射、折射或繞射之光線能量程度即可對應到脈搏。因此,透過感測單元SU亦可量測到人體的脈搏及血氧濃度的變化,以及其他的相關之生理資訊。
In another embodiment, when the
另外,請參照圖4所示,其為本發明另一實施態樣之電子裝置1a的示意圖。本實施態樣之電子裝置1a之本體Ba具有一顯示面板11a,且顯示面板11a仍以主動矩陣式有機發光二極體顯示面板為例。
In addition, please refer to FIG. 4, which is a schematic diagram of an electronic device 1 a according to another embodiment of the present invention. The body Ba of the electronic device 1a of this embodiment has a
與圖1A之電子裝置1主要的不同在於,電子裝置1a的感測區SA是對應於顯示面板11a之週邊區PA。因此,顯示面板11a之顯示區AA內的該些次畫素結構Px(如圖1B所示)只具有顯示影像之發光元件111(如圖1B所示),並不具有圖1B中感測區SA的光感測元件112。另外,本實施例之感測區SA內之感測單元的驅動線並不是圖1B中次畫素結構Px的掃描線SL,而且感測區SA的訊號線也不是圖1B中次畫素結構Px的資料線DL,而是另外為了感測生物特徵或生物參數而設置的線路。在實施上,可將具有複數感測單元之電子裝置製作成晶片,並將該晶片(電子裝置)與有機發光二極體顯示面板(OLED)或微二極體(μ LED)顯示
面板結合(例如粘合),使該晶片對應於有機發光二極體顯示面板(OLED)或微二極體(μ LED)顯示面板之週邊區後,再與一保護基板(玻璃)組合而成為上述之電子裝置1a。
The main difference from the
此外,電子裝置1a的其他技術特徵可參照電子裝置1,於此不再贅述。
In addition, for other technical features of the electronic device 1a, reference may be made to the
再一提的是,在不同的實施例中,若電子裝置之感測區與顯示區一樣大且重疊(即兩者尺寸一樣大,顯示區即為感測區)時,則可將其應用於觸控位置的偵測(於此為光學式觸控)。其中,由於被碰觸的感測單元中,其光感測元件所產生的感測訊號(被訊號讀出線讀出的光電流訊號)與未碰觸之感測單元的感測訊號不相同,藉由感測訊號的不同可辨別顯示面板被碰觸的位置。因此,電子裝置可不需再設置習知的觸控電極就可得到被觸碰位置而使得電子裝置具有觸控功能。此外,當應用於觸控位置偵測時,由於電子裝置每一個次畫素結構的尺寸相當小,因此,不需要將顯示面板顯示區(或感測區)內的所有感測單元都設置光感測元件,而是例如只將感測單元整合於同一顏色的次畫素結構(例如只在紅色對應的次畫素結構中製作光感測元件)即可,藉此可再降低感測單元的設置成本。此外,在又一實施例中,電子裝置為一晶片,並將此晶片與一信用卡結合後,可使該信用卡具有生物特徵(指紋)辨識功能,藉此,使得該信用卡的安全性可提高,不怕被有心人士盜刷。 It is also mentioned that in different embodiments, if the sensing area of the electronic device is as large as the display area and overlaps (that is, the two are the same size, the display area is the sensing area), it can be applied Detection at the touch position (here optical touch). Wherein, in the touched sensing unit, the sensing signal (photocurrent signal read by the signal readout line) generated by the light sensing element is different from the sensing signal of the untouched sensing unit , You can identify the touched position of the display panel by sensing different signals. Therefore, the electronic device can obtain the touched position without providing conventional touch electrodes, so that the electronic device has a touch function. In addition, when applied to touch position detection, since the size of each sub-pixel structure of the electronic device is quite small, there is no need to set all the sensing units in the display area (or sensing area) of the display panel to have light For the sensing element, for example, only the sensing unit is integrated into the sub-pixel structure of the same color (for example, the light-sensing element is made only in the sub-pixel structure corresponding to red), thereby reducing the sensing unit Set-up costs. In addition, in yet another embodiment, the electronic device is a chip, and combining the chip with a credit card can enable the credit card to have a biometric (fingerprint) identification function, thereby improving the security of the credit card, Not afraid of being stolen by intentional people.
綜上所述,因本發明之電子裝置中,本體具有一感測區,而感測區包含複數感測單元,各感測單元之訊號線與驅動線交錯設置,訊號讀出線與驅動線交錯設置。另外,各感測單元之發光元件分別與驅動線及訊號線電連接,而光感測元件分別與驅動線及訊號讀出線電連接;其中,發光元件發出一光線射向人體組織,且經反射、漫射、折射後被光感測元件所接收而產生一感測訊號。藉此,使得本發明之電子裝置可具有生物特徵辨識或生理參數量測的功能。 In summary, in the electronic device of the present invention, the body has a sensing area, and the sensing area includes a plurality of sensing units. The signal lines and the drive lines of each sensing unit are interleaved, and the signal readout line and the drive line Interlace settings. In addition, the light-emitting element of each sensing unit is electrically connected to the drive line and the signal line, respectively, and the light-sensing element is electrically connected to the drive line and the signal readout line, respectively; After being reflected, diffused and refracted, it is received by the light sensing element to generate a sensing signal. In this way, the electronic device of the present invention can have functions of biometrics identification or physiological parameter measurement.
在一實施例中,可將生物特徵辨識或生理參數量測的感測電路於顯示面板之次畫素結構的製程中同時製作,因此,相較於習知於電子裝置上再另外設置生物特徵辨識或生理參數量測功能的偵測晶片而言,本 發明除了有別於習知技術之外,更具有成本較低的優勢。此外,在另一實施例中,亦可將具有複數感測單元之電子裝置製作成晶片,並將該晶片(電子裝置)與有機發光二極體顯示面板(OLED)或微二極體(μ LED)顯示面板結合,使該晶片對應於有機發光二極體顯示面板(OLED)或微二極體(μ LED)顯示面板之週邊區後,再與一保護基板(玻璃)組合而成為另一電子裝置。 In one embodiment, the sensing circuits for biometrics identification or physiological parameter measurement can be fabricated simultaneously in the process of the sub-pixel structure of the display panel, therefore, compared with the conventional methods, additional biometrics are provided on the electronic device For the detection chip of identification or physiological parameter measurement function, this In addition to being different from the conventional technology, the invention has the advantage of lower cost. In addition, in another embodiment, an electronic device having a plurality of sensing units may be fabricated into a wafer, and the wafer (electronic device) and an organic light-emitting diode display panel (OLED) or micro diode (μ) LED) display panel, so that the chip corresponds to the peripheral area of the organic light-emitting diode display panel (OLED) or micro-diode (μLED) display panel, and then combined with a protective substrate (glass) to become another Electronic device.
以上所述僅為舉例性,而非為限制性者。任何未脫離本發明之精神與範疇,而對其進行之等效修改或變更,均應包含於後附之申請專利範圍中。 The above is only exemplary, and not restrictive. Any equivalent modifications or changes made without departing from the spirit and scope of the present invention shall be included in the scope of the attached patent application.
111‧‧‧發光元件 111‧‧‧Lighting element
112‧‧‧光感測元件 112‧‧‧Light sensing element
D‧‧‧驅動線 D‧‧‧Drive line
DL‧‧‧資料線 DL‧‧‧Data cable
Px‧‧‧次畫素結構 Px‧‧‧ pixel structure
R‧‧‧訊號讀出線 R‧‧‧Signal readout line
S‧‧‧訊號線 S‧‧‧Signal line
SL‧‧‧掃描線 SL‧‧‧scan line
SU‧‧‧感測單元 SU‧‧‧sensing unit
T1‧‧‧第一電晶體 T1‧‧‧ First transistor
T2‧‧‧第二電晶體 T2‧‧‧second transistor
Vdd‧‧‧第二電壓源 Vdd‧‧‧Second voltage source
Vss‧‧‧第一電壓源 Vss‧‧‧First voltage source
Claims (9)
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EP4005477A1 (en) * | 2020-11-30 | 2022-06-01 | Samsung Electronics Co., Ltd. | Biological information measuring apparatus and electronic device including the same |
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CN110580434B (en) * | 2018-06-11 | 2023-05-26 | 鸿富锦精密工业(深圳)有限公司 | Array substrate, display panel and display device |
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US20100182282A1 (en) * | 2009-01-21 | 2010-07-22 | Semiconductor Energy Laboratory Co., Ltd. | Touch panel and electronic device |
TW201106231A (en) * | 2009-08-14 | 2011-02-16 | Au Optronics Corp | OLED touch panel and method of forming the same |
TW201539284A (en) * | 2014-03-19 | 2015-10-16 | Bidirectional Display Inc | Image sensor panel and method for capturing graphical information using same |
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US20100182282A1 (en) * | 2009-01-21 | 2010-07-22 | Semiconductor Energy Laboratory Co., Ltd. | Touch panel and electronic device |
TW201106231A (en) * | 2009-08-14 | 2011-02-16 | Au Optronics Corp | OLED touch panel and method of forming the same |
TW201539284A (en) * | 2014-03-19 | 2015-10-16 | Bidirectional Display Inc | Image sensor panel and method for capturing graphical information using same |
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EP4005477A1 (en) * | 2020-11-30 | 2022-06-01 | Samsung Electronics Co., Ltd. | Biological information measuring apparatus and electronic device including the same |
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