TW202029050A - Optional position fingerprint detecting circuit and electronic apparatus including a control unit, a gate driving unit, a multiplexer unit and a signal readout unit - Google Patents
Optional position fingerprint detecting circuit and electronic apparatus including a control unit, a gate driving unit, a multiplexer unit and a signal readout unit Download PDFInfo
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本發明係關於指紋檢測之技術領域,尤指一種任意位置指紋檢測電路及電子裝置。The present invention relates to the technical field of fingerprint detection, and particularly refers to an arbitrary position fingerprint detection circuit and electronic device.
生物辨識技術(Biometric identification)係藉由採集人體固有的生理特徵作為個體生物的辨識依據,例如:虹膜(Iris)、臉部(Face)、聲紋(Voice)、與指紋(Fingerprint)等生理特徵,其中,指紋辨識技術已廣見於各種電子產品中。目前,市售的指紋辨識裝置可分為光學式、壓力式、超音波式和電容式,其中,一般的光學式指紋辨識裝置均包括發光源、光檢測器陣列、指紋檢測電路、以及指紋辨識運算函式。值得特別說明的是,屏下式的光學式指紋辨識裝置是直接利用自發光螢幕作為發光源,於結構組成上省去了發光元件。Biometric identification technology is to collect the inherent physiological characteristics of the human body as the identification basis of individual organisms, such as: iris (Iris), face (Face), voice print (Voice), fingerprint (Fingerprint) and other physiological characteristics Among them, fingerprint recognition technology has been widely seen in various electronic products. Currently, commercially available fingerprint recognition devices can be divided into optical, pressure, ultrasonic and capacitive types. Among them, general optical fingerprint recognition devices include a light source, a photodetector array, a fingerprint detection circuit, and fingerprint recognition. Operation function. It is worth noting that the under-screen optical fingerprint recognition device directly uses the self-luminous screen as the light source, and the light-emitting element is omitted in the structural composition.
請參照圖1,其繪示一習知指紋檢測電路的架構圖。如圖1所示,一指紋檢測電路1’包括一控制單元10’、電性連接至一顯示面板3’之光檢測器陣列2’之驅動側的一閘極驅動單元11’及電性連接至顯示面板3’之光檢測器陣列2’之檢測側的一訊號讀出單元12’。請同時參照圖2,其繪示圖1之光檢測器陣列2’的內部架構圖。如圖2所示,光檢測器陣列2’包括n×m個光檢測器,n和m均為大於1的整數,且各所述光檢測器均包括一TFT開關21’、一光二極體22’及一寄生電容23’。值得注意的是,光檢測器陣列2’的n×m個TFT開關21’的閘極係透過閘極線211’-21n’而耦接閘極驅動單元11’,且光檢測器陣列2’的n×m個TFT開關21’的源極係透過源極線221’- 22m’而耦接訊號讀出單元12’。Please refer to FIG. 1, which shows a structure diagram of a conventional fingerprint detection circuit. As shown in FIG. 1, a fingerprint detection circuit 1'includes a control unit 10', a gate driving unit 11' electrically connected to the driving side of the photodetector array 2'of a display panel 3', and electrical connections A signal readout unit 12' on the detection side of the photodetector array 2'of the display panel 3'. Please refer to FIG. 2 at the same time, which shows an internal structure diagram of the photodetector array 2'of FIG. As shown in FIG. 2, the photodetector array 2'includes n×m photodetectors, n and m are both integers greater than 1, and each of the photodetectors includes a TFT switch 21' and a photodiode. 22' and a parasitic capacitance 23'. It is worth noting that the gates of the n×m TFT switches 21' of the photodetector array 2'are coupled to the gate driving unit 11' through the gate lines 211'-21n', and the photodetector array 2' The sources of the n×m TFT switches 21' are coupled to the signal readout unit 12' through
在開始進行指紋檢測之前,閘極驅動單元11’會依控制單元10’的時序控制依序地輸入驅動訊號至閘極線211’-21n’,同時控制單元10’會控制訊號讀出單元12’而使其依序地透過源極線221’- 22m’將各寄生電容23’進行放電(Discharge),以清除寄生電容23’內的累積電荷。完成所有寄生電容23’的電荷清除動作之後,閘極驅動單元11’即關閉所有TFT開關21’,然後開始啟動指紋檢測程序。在外部光線的作用下,光檢測器陣列2’內的光二極體22’會產生光電流,且該光電流會在寄生電容23’上累積電荷。等待累積電荷的時間(約幾十ms~幾百ms)過去之後,閘極驅動單元11’再次依序地輸入驅動訊號至閘極線211’-21n1’,同時訊號讀出單元12’依序地透過源極線221’- 22m’ 讀取各寄生電容23’的電壓。Before fingerprint detection starts, the gate driving unit 11' will sequentially input driving signals to the gate lines 211'-21n' according to the timing control of the control unit 10', and the control unit 10' will control the
圖1與圖2所顯示的所述光檢測器陣列2’僅佔一顯示幕的一局部區域。也就是說,對於屏下式的光學式指紋辨識裝置而言,其只有由所述光檢測器陣列2’組成的這一小塊區域能夠進行指紋檢測。為提供更大面積的指紋檢測的功能,習知已有利用多個閘極驅動單元11’和多個訊號讀出單元12’搭配的組合方案。請參照圖3,其繪示另一習知指紋檢測電路的架構圖。The photodetector array 2'shown in Figs. 1 and 2 only occupies a partial area of a display screen. In other words, for an under-screen optical fingerprint recognition device, only this small area composed of the photodetector array 2'can perform fingerprint detection. In order to provide a fingerprint detection function with a larger area, a combination scheme using multiple gate driving units 11' and multiple signal reading units 12' has been conventionally used. Please refer to FIG. 3, which shows a structure diagram of another conventional fingerprint detection circuit.
如圖3所示,2×3個光檢測器陣列2’被對應地規畫於2×3塊區域之中,且指紋檢測電路1’包括:一控制單元10’、電性連接至2×3個光檢測器陣列2’之驅動側的二個閘極驅動單元11’、及電性連接至2×3個光檢測器陣列2’之檢測側的三個訊號讀出單元12’。依此,即可指紋感測面積增加為6倍。然而,對於指紋檢測電路1’而言,其訊號驅動與訊號檢測之區域也同時增加為6倍,因此完成全部區域的指紋檢測程序勢必花費更多時間。除此之外,對於控制單元10’而言,協調性地控制二個閘極驅動單元11’與三個訊號讀出單元12’也非易事,且後端的資料處理單元所必須處理的資料量也會倍增。也就是說,圖3所示的架構很顯然地並不理想,且具有許多實務上的缺陷。As shown in FIG. 3, 2×3 photodetector arrays 2'are correspondingly planned in 2×3 blocks, and the fingerprint detection circuit 1'includes: a control unit 10' electrically connected to 2× Two gate drive units 11' on the drive side of the three photodetector arrays 2'and three signal readout units 12' electrically connected to the detection side of the 2×3 photodetector arrays 2'. According to this, the fingerprint sensing area can be increased by 6 times. However, for the fingerprint detection circuit 1', the area for signal driving and signal detection is also increased by 6 times at the same time, so it will take more time to complete the fingerprint detection process for all areas. In addition, it is not easy for the control unit 10' to coordinately control the two gate drive units 11' and the three signal readout units 12', and the data that must be processed by the back-end data processing unit The amount will also double. In other words, the architecture shown in Figure 3 is obviously not ideal and has many practical defects.
因此,本領域亟需一種新穎的指紋檢測電路。Therefore, a novel fingerprint detection circuit is urgently needed in the art.
本發明之一目的在於提出一種任意位置指紋檢測電路,其可藉由一多工電路大幅減少面板與晶片間之走線數目並減少晶片的接腳數目,從而有利於窄邊框的全屏指紋檢測設計。One purpose of the present invention is to provide an arbitrary position fingerprint detection circuit, which can greatly reduce the number of wires between the panel and the chip and reduce the number of pins of the chip by a multiplexing circuit, thereby facilitating the design of full-screen fingerprint detection with a narrow frame .
本發明之另一目的在於提出一種任意位置指紋檢測電路,其可藉由選擇性地驅動與一指紋感測區對應的閘極線以增進指紋檢測速度。Another object of the present invention is to provide an arbitrary position fingerprint detection circuit, which can increase the fingerprint detection speed by selectively driving the gate line corresponding to a fingerprint sensing area.
為達成上述目的,一種指紋檢測電路乃被提出,其電性連接至一光感測器陣列,該光感測器陣列包括M×N個光檢測器、M條閘極線及N條源極線,其中,M和N均為大於1的整數,且所述任意位置指紋檢測電路包括:To achieve the above objective, a fingerprint detection circuit is proposed, which is electrically connected to a photo sensor array, the photo sensor array includes M×N photodetectors, M gate lines, and N sources Line, where both M and N are integers greater than 1, and the arbitrary position fingerprint detection circuit includes:
一控制單元;A control unit;
一閘極驅動單元,電性連接該控制單元,並電性連接至M條所述閘極線;A gate drive unit electrically connected to the control unit and electrically connected to the M gate lines;
一多工器單元,電性連接該控制單元,並包括N個開關及J個多工輸出端,J為大於1的整數,其中,各所述開關均具有一控制端、一第一通道端及一第二通道端,各所述控制端均與該控制單元耦接,各所述第一通道端均與一條所述源極線耦接,且各所述多工輸出端均與複數個所述第二通道端耦接,俾以在各所述多工輸出端被選取時各提供一檢測訊號;以及A multiplexer unit is electrically connected to the control unit, and includes N switches and J multiplex output terminals, where J is an integer greater than 1, wherein each switch has a control terminal and a first channel terminal And a second channel end, each of the control ends is coupled to the control unit, each of the first channel ends is coupled to one of the source lines, and each of the multiplexed output ends is connected to a plurality of The second channel end is coupled to each provide a detection signal when each of the multiplexed output ends is selected; and
一訊號讀出單元,電性連接該控制單元與該多工器單元,並包括J個訊號讀出器;A signal reading unit, electrically connected to the control unit and the multiplexer unit, and including J signal readers;
於操作時,該控制單元控制該閘極驅動單元以至少驅動與該光感測器陣列內之一指紋感測區對應之複數條所述閘極線,且該訊號讀出單元透過J個所述訊號讀出器讀取該多工器單元所提供的J個所述檢測訊號,其中,該指紋感測區係位在該光感測器陣列內之至少一檢測區域內。During operation, the control unit controls the gate driving unit to drive at least a plurality of the gate lines corresponding to a fingerprint sensing area in the photo sensor array, and the signal readout unit transmits through J The signal reader reads the J detection signals provided by the multiplexer unit, wherein the fingerprint sensing area is located in at least one detection area in the photo sensor array.
在可能的實施例中,各所述訊號讀出器所耦接的複數個所述開關為彼此相鄰或不相鄰。In a possible embodiment, the plurality of switches coupled to each of the signal readers are adjacent to or not adjacent to each other.
在一實施例中,所述至少一檢測區域係在一顯示屏之至少一子屏內。In an embodiment, the at least one detection area is in at least one sub-screen of a display screen.
在一實施例中,至少兩個所述開關的所述控制端耦接同一個開關控制訊號。In an embodiment, the control terminals of at least two of the switches are coupled to the same switch control signal.
在一實施例中,該閘極驅動單元係依一掃描方向循序驅動各所述檢測區域內的複數條所述閘極線。In one embodiment, the gate driving unit sequentially drives a plurality of the gate lines in each detection area according to a scanning direction.
在一實施例中,該閘極驅動單元以一第一掃描速度驅動所述至少一檢測區域內涵蓋所述指紋感測區的部分,並以一第二掃描速度驅動所述至少一檢測區域內未涵蓋所述指紋感測區的部分,且該第二掃描速度高於該第一掃描速度。In one embodiment, the gate driving unit drives a portion of the at least one detection area that covers the fingerprint sensing area at a first scanning speed, and drives the at least one detection area at a second scanning speed The portion of the fingerprint sensing area is not covered, and the second scanning speed is higher than the first scanning speed.
在一實施例中,該閘極驅動單元係以彼此相反的二掃描方向驅動涵蓋所述指紋感測區的部分的二個所述檢測區域。In one embodiment, the gate driving unit drives the two detection areas covering a portion of the fingerprint sensing area in two scan directions opposite to each other.
在一實施例中,該閘極驅動單元包含一閘極驅動晶片或一板上集成閘極驅動電路。In one embodiment, the gate driving unit includes a gate driving chip or an on-board integrated gate driving circuit.
另外,本發明進一步提出一種電子裝置,其具有如前所述之任意位置指紋檢測電路。In addition, the present invention further provides an electronic device having the arbitrary position fingerprint detection circuit as described above.
於一實施例中,該電子裝置其可為下列任一者:智慧型手機、平板電腦、筆記型電腦、一體式電腦、門口機、電子門鎖、或指紋辨識裝置。In one embodiment, the electronic device may be any of the following: a smart phone, a tablet computer, a notebook computer, an all-in-one computer, a door phone, an electronic door lock, or a fingerprint recognition device.
為使 貴審查委員能進一步瞭解本發明之結構、特徵、目的、與其優點,茲附以圖式及較佳具體實施例之詳細說明如後。In order to enable your reviewer to further understand the structure, features, purpose, and advantages of the present invention, the drawings and detailed descriptions of preferred specific embodiments are attached as follows.
圖4繪示本發明之任意位置指紋檢測電路之一實施例的架構圖。如圖4所示本發明之任意位置指紋檢測電路1電性連接至一顯示面板3的一光感測器陣列2,且該光感測器陣列2包括M×N個光檢測器、M條閘極線與N條源極線,其中M和N均為大於1的整數。FIG. 4 is a structural diagram of an embodiment of the arbitrary position fingerprint detection circuit of the present invention. As shown in FIG. 4, the arbitrary position
繼續地參閱圖4,本發明之任意位置指紋檢測電路1主要包括:一控制單元10、一閘極驅動單元11、一多工器單元12、以及一訊號讀出單元13。並且,請同時參閱圖5,其繪示圖4之光感測器陣列、多工器單元與訊號讀出單元之一實施例的架構圖。根據本發明之設計,該閘極驅動單元11電性連接該控制單元10,並電性連接至所述複數條閘極線。該多工器單元12電性連接該控制單元10,並包括N個開關121及J個多工輸出端,J為大於1的正整數,且N個所述開關121均具有一控制端、一第一通道端及一第二通道端,並以其第一通道端電性連接至所述源極線,且各所述多工輸出端均與複數個所述第二通道端耦接。另一方面,該訊號讀出單元13電性連接該控制單元10與該多工器單元12。由圖5可知,訊號讀出單元13包括J個訊號讀出器131,且各所述訊號讀出器131耦接至各所述多工輸出端。舉例而言,若源極線的數量為1440,則多工器單元12會有1440個開關121以其第一通道端耦接至各所述源極線。在訊號讀出單元13具有200個訊號接收通道的情況下,則多工器單元12會有200個多工輸出端分別耦接至200個所述訊號讀出器131。在這種情況下,一個訊號讀出器131會透過所述多工輸出端耦接至少7個開關121。熟悉顯示器電路設計與製作的工程師應該可以推知,所述閘極線與所述源極線的數量係隨著不同的顯示面板3的解析度而改變,並非定值。4, the arbitrary position
同時,圖5顯示訊號讀出單元13所耦接的N個所述開關121為彼此不相鄰;例如,第1、201、401、…、1401個所述開關121透過多工器單元12的一個多工輸出端同時耦接至第1個訊號讀出器131,且第2、202、402、…、1402個所述開關121透過多工器單元12的另一個多工輸出端同時耦接至第2個訊號讀出器131。以此類推,1440條源極線皆有其連接至相應的所述開關121的第一通道端,且N個開關121的第二通道端透過多工器單元12的J個多工輸出端接至對應的訊號讀出器131。於此,所述訊號讀出器131為一類比前端(Analog front end, AFE)元件。At the same time, FIG. 5 shows that the
請再同時參閱圖6,其繪示圖5之開關與訊號讀出器之一連接圖。如圖5與圖6所示,控制單元10耦接至該多工器單元12的N個所述開關121的一控制端。並且,依據控制單元10的控制,該閘極驅動單元11將一驅動訊號依序地輸入M條所述閘極線;同時,控制單元10傳送開關控制訊號至N個開關121,使得該訊號讀出單元13可以在控制單元10的控制下透過N個所述開關121與N條所述源極線自一檢測區域5內讀出檢測訊號。圖6之中的SEL<0>、SEL<1>、SEL<2>、與SEL<3>即為所述開關控制訊號,IO<0>、IO<1>、IO<2>、與IO<3>則為所述檢測訊號。並且,由圖6的示範例可以得知,光感測器陣列2之上的一個檢測區域5可以動態且任意地由M條(即,四條)所述閘極線與N條(即,四條)所述源極線所決定。如此設計,在固定同樣四條閘極線的情況下,向右變動一條源極線(一個開關121)的方式可以將所述檢測區域5移動一個像素。Please refer to FIG. 6 at the same time, which shows a connection diagram of the switch and the signal reader of FIG. 5. As shown in FIGS. 5 and 6, the
值得注意的是,圖6顯示每個開關121皆透過其控制端接收由控制單元10所傳送的一組開關控制訊號,亦即每個開關121皆必須透過線路電性連接至控制單元10。可以預知的,這種方式會造成所述任意位置指紋檢測電路1的電路晶片的線路布局(circuit layout)變的龐大且複雜。因此,請參考圖7,其繪示圖5之開關與訊號讀出器之另一連接圖,其方式係將P個所述開關121耦接同一組開關控制訊號,且P值大於2。例如,於圖7之中,兩個開關121耦接同一組開關控制訊號。如此設計,在固定同樣四條閘極線的情況下,控制單元10能夠以所述開關控制訊號控制各所述開關121,使得所述檢測區域5以二個像素的大小向右移動。簡單地說,令P個所述開關121耦接同一組開關控制訊號之後,就可以簡化所述任意位置指紋檢測電路1的電路晶片的線路布局,降低線路布局的面積。It is worth noting that FIG. 6 shows that each
圖8a繪示圖5之光感測器陣列、多工器單元與訊號讀出單元之一連接圖。通常,單一組訊號讀出單元13會包含200個訊號讀出器(即,AFE)131。如圖8a所示,控制單元10可以同時控制200個訊號讀出器131,即AFE1~40、AFE41~80、AFE81~120、AFE121~160、與AFE161~200,使訊號讀出單元13一次性將所有源極線的檢測訊號全部採集出來。然而,可以預知的,同時啟用200個AFE通道會讓所述任意位置指紋檢測電路1的電路晶片的功耗過高(可能接近1W)。因此,請參考圖8b,其繪示圖5之光感測器陣列、多工器單元與訊號讀出單元之另一連接圖,其方式係將訊號讀出單元13所包含的200個訊號讀出器(即,AFE)131分成幾個組別,然後以分組啟用的方式來控制訊號讀出。FIG. 8a shows a connection diagram of the photo sensor array, multiplexer unit and signal readout unit of FIG. 5. FIG. Generally, a single set of
雖然採用圖8b的方式,可以有效降低AFE通道的啟用功耗,然而還有更佳的方式可以降低AFE通道的啟用功耗。圖8c繪示圖5之光感測器陣列、多工器單元與訊號讀出單元之另一連接圖。比較圖8b與圖8c可以發現,圖8b是採用分時、分組的方式來啟用該訊號讀出單元13內部的不同組別的訊號讀出器(即,AFE)131,然而圖8c則採用分時、同組的方式來啟用該訊號讀出單元13內部的單一組訊號讀出器131。簡單地說,採用圖8c的方式還可以進一步地節省所述訊號讀出單元13所包含的訊號讀出器131的總量。Although the method shown in Figure 8b can effectively reduce the enabling power consumption of the AFE channel, there are better ways to reduce the enabling power consumption of the AFE channel. 8c is another connection diagram of the photo sensor array, multiplexer unit and signal readout unit of FIG. 5. Comparing Fig. 8b and Fig. 8c, it can be found that Fig. 8b uses time-sharing and grouping to enable different groups of signal readers (ie, AFE) 131 inside the
必須知道的是,訊號讀出單元13(亦即Read out IC, ROIC)對於雜訊的要求非常高,而一個指紋辨識裝置的雜訊來源主要有三種:光感測器陣列2的光二極體(photodiode)的雜訊、ROIC IC的本身的線路雜訊、以及各所述源極線至該訊號讀出單元13內的各所述訊號讀出器(亦即,AFE)131之線路寄生。可以推知的,源極線與訊號讀出器131之間的連接線路越多、越長,線路寄生所衍生的雜訊很有可能會蓋過檢測訊號,導致控制單元10或後端的訊號處理器無法辨識訊號讀出器131的檢測訊號。It must be known that the signal readout unit 13 (ie Read out IC, ROIC) has very high requirements for noise, and there are three main sources of noise for a fingerprint recognition device: the photodiode of the photo sensor array 2 (photodiode) noise, the own line noise of the ROIC IC, and the line from each of the source lines to each of the signal readers (ie, AFE) 131 in the
圖9繪示圖5之光感測器陣列、多工器單元與訊號讀出單元之一連接架構圖。為了降低所述線路寄生,如圖9所示,相鄰數個開關121的第二通道端係透過所述多工器單元12的一個多工輸出端而同時被連接至同一個訊號讀出器(即,AFE)131。簡單地說,訊號讀出器131所耦接的N個所述開關121為相鄰。繪示圖5之光感測器陣列與多工器單元之一連接示意圖。請同時參閱圖9與圖10,相鄰的的開關121連接同一個訊號讀出器(即,AFE)131之後,連接線路便大幅縮短,降低了線路寄生雜訊。並且,圖10係透過顯示開關121的動態開啟,以表達各所述訊號讀出器131與源極線(亦即,IO)的動態連接關。9 is a diagram showing a connection structure of the photo sensor array, multiplexer unit and signal readout unit of FIG. 5; In order to reduce the line parasitics, as shown in FIG. 9, the second channel ends of several
請繼續參閱圖11,其繪示將圖5之光感測器陣列分成三區的一感測操作示意圖,其中顯示面板3具有3360條閘極線,且M條所述閘極線與N條所述源極線決定光感測器陣列的一檢測區域5。特別地,於圖11之中,吾人將該檢測區域5之內受到手指覆蓋的部分標註為關注檢測區域5RoI(Region of Interest, RoI)。習知技術通常是令閘極驅動單元11將驅動訊號自第1條閘極線依序地輸入第3360條閘極線,但是這樣的方式會讓整個掃描時間隨著閘極線數量的增加而變長。因此,如圖11所示,本發明特別令該閘極驅動單元11以具有一第一掃描速度的該驅動訊號輸入受到手指覆蓋的該檢測區域(如實線箭號所示),並以具有一第二掃描速度的該驅動訊號輸入剩餘未受到手指覆蓋的所述檢測區域(如虛線箭號所示);該第二掃描速度高於該第一掃描速度。圖12即繪示與圖11對應之一工作時序圖。Please continue to refer to FIG. 11, which illustrates a schematic diagram of a sensing operation in which the photo sensor array of FIG. 5 is divided into three regions, in which the
另外,請一併參照圖13-16,其中,圖13繪示圖5之光感測器陣列以多子屏的方式實施,且一指紋感測區係位在一子屏內的一掃描感測操作示意圖;圖14繪示圖5之光感測器陣列以多子屏的方式實施,且一指紋感測區係跨在兩個子屏內的一同向掃描感測操作示意圖;圖15繪示圖5之光感測器陣列以多子屏的方式實施,且一指紋感測區係跨在兩個子屏內的兩個反向掃描感測操作示意圖;以及圖16繪示圖5之光感測器陣列以多子屏的方式實施,且一指紋感測區係跨在三個子屏內的一感測操作示意圖。值得注意的是,在圖15中,所述兩個反向掃描感測操作只掃描指紋感測區5RoI,其餘部分則不予掃描。In addition, please refer to FIGS. 13-16 together. Among them, FIG. 13 shows that the light sensor array of FIG. 5 is implemented in a multi-screen mode, and a fingerprint sensing area is a scan sensor located in a sub-screen. Fig. 14 shows the photo sensor array of Fig. 5 implemented in a multi-sub-screen mode, and a fingerprint sensing area straddles the two sub-screens. The photo sensor array of FIG. 5 is implemented in a multi-sub-screen mode, and a fingerprint sensing area is a schematic diagram of two reverse scanning sensing operations spanning the two sub-screens; and FIG. 16 is a diagram of FIG. 5 The photo sensor array is implemented with multiple sub-screens, and a fingerprint sensing area straddles the three sub-screens. A schematic diagram of a sensing operation. It is worth noting that, in FIG. 15, the two reverse scanning sensing operations only scan the
另外,依上述的說明,本發明進一步提出一種電子裝置,其具有如前述之任意位置指紋檢測電路,且該電子裝置其可為下列任一者:智慧型手機、平板電腦、筆記型電腦、一體式電腦、門口機、電子門鎖、或指紋辨識裝置。In addition, according to the above description, the present invention further provides an electronic device with the aforementioned arbitrary position fingerprint detection circuit, and the electronic device can be any of the following: smart phone, tablet computer, notebook computer, integrated Computer, door phone, electronic door lock, or fingerprint recognition device.
如此,上述係已完整且清楚地說明本發明之任意位置指紋檢測電路及電子裝置;並且,經由上述可得知本發明係具有下列之優點:In this way, the above system has completely and clearly described the arbitrary position fingerprint detection circuit and electronic device of the present invention; and from the above, it can be seen that the present invention has the following advantages:
(1)本發明的任意位置指紋檢測電路可藉由一多工電路大幅減少面板與晶片間之走線數目並減少晶片的接腳數目,從而有利於窄邊框的全屏指紋檢測設計。(1) The arbitrary position fingerprint detection circuit of the present invention can greatly reduce the number of traces between the panel and the chip and the number of pins of the chip by using a multiplex circuit, thereby facilitating the design of full-screen fingerprint detection with a narrow frame.
(2)本發明的任意位置指紋檢測電路可藉由選擇性地驅動與一指紋感測區對應的閘極線以增進指紋檢測速度。(2) The arbitrary position fingerprint detection circuit of the present invention can increase the fingerprint detection speed by selectively driving the gate line corresponding to a fingerprint sensing area.
必須加以強調的是,前述本案所揭示者乃為較佳實施例,舉凡局部之變更或修飾而源於本案之技術思想而為熟習該項技藝之人所易於推知者,俱不脫本案之專利權範疇。It must be emphasized that the foregoing disclosures in this case are preferred embodiments, and any partial changes or modifications that are derived from the technical ideas of this case and are easily inferred by those who are familiar with the art will not deviate from the patent of this case. Right category.
綜上所陳,本案無論目的、手段與功效,皆顯示其迥異於習知技術,且其首先發明合於實用,確實符合發明之專利要件,懇請 貴審查委員明察,並早日賜予專利俾嘉惠社會,是為至禱。In summary, regardless of the purpose, means, and effects of this case, it is shown that it is very different from the conventional technology, and its first invention is practical, and it does meet the patent requirements of the invention. Please check it out and grant the patent as soon as possible. Society is for the best prayer.
<本發明> 1:任意位置指紋檢測電路 2:光感測器陣列 3:顯示面板 10:控制單元 11:閘極驅動單元 12:多工器單元 13:訊號讀出單元 121:開關 131:訊號讀出器 5:檢測區域 5RoI:關注檢測區域 <The present invention> 1: Any position fingerprint detection circuit 2: Light sensor array 3: display panel 10: Control unit 11: Gate drive unit 12: Multiplexer unit 13: Signal readout unit 121: switch 131: Signal Reader 5: Detection area 5RoI: Focus on the detection area
<習知>
1’:指紋檢測電路
2’:光檢測器陣列
3’:顯示面板
10’:控制單元
11’:閘極驅動單元
12’:訊號讀出單元
21’:TFT開關
22’:光二極體
23’:寄生電容
21n’:閘極線
21n1’:閘極線
212’:閘極線
211’:閘極線
221’:源極線
222’:源極線
22m1’:源極線
22m’:源極線
<Acquaintances>
1’: Fingerprint detection circuit
2’: Light detector array
3’: Display panel
10’: Control unit
11’: Gate drive unit
12’: Signal reading unit
21’: TFT switch
22’: Light Diode
23’:
圖1繪示一習知指紋檢測電路的架構圖; 圖2繪示圖1之光檢測器陣列的內部架構圖; 圖3繪示另一習知指紋檢測電路的架構圖; 圖4繪示本發明之任意位置指紋檢測電路之一實施例的架構圖; 圖5繪示圖4之光感測器陣列、多工器單元與訊號讀出單元之一實施例的架構圖; 圖6繪示圖5之開關與訊號讀出器之一連接圖; 圖7繪示圖5之開關與訊號讀出器之另一連接圖; 圖8a繪示圖5之光感測器陣列、多工器單元與訊號讀出單元之一連接圖; 圖8b繪示圖5之光感測器陣列、多工器單元與訊號讀出單元之另一連接圖; 圖8c繪示圖5之光感測器陣列、多工器單元與訊號讀出單元之另一連接圖; 圖9繪示圖5之光感測器陣列、多工器單元與訊號讀出單元之一連接架構圖; 圖10繪示圖5之光感測器陣列與多工器單元之一連接示意圖; 圖11繪示將圖5之光感測器陣列分成三區的一感測操作示意圖; 圖12繪示與圖11對應之一工作時序圖; 圖13繪示圖5之光感測器陣列以多子屏的方式實施,且一指紋感測區係位在一子屏內的一感測操作示意圖; 圖14繪示圖5之光感測器陣列以多子屏的方式實施,且一指紋感測區係跨在兩個子屏內的一感測操作示意圖; 圖15繪示圖5之光感測器陣列以多子屏的方式實施,且一指紋感測區係跨在兩個子屏內的另一感測操作示意圖;以及 圖16繪示圖5之光感測器陣列以多子屏的方式實施,且一指紋感測區係跨在三個子屏內的一感測操作示意圖。Fig. 1 shows the structure diagram of a conventional fingerprint detection circuit; Fig. 2 shows the internal structure diagram of the photodetector array of Fig. 1; Fig. 3 shows the structure diagram of another conventional fingerprint detection circuit; Fig. 4 shows this The architecture diagram of an embodiment of the arbitrary position fingerprint detection circuit of the invention; FIG. 5 shows the architecture diagram of one embodiment of the photo sensor array, multiplexer unit and signal readout unit of FIG. 4; FIG. 6 shows a diagram Figure 5 shows a connection diagram of a switch and a signal reader; Figure 7 shows another connection diagram of the switch and a signal reader of Figure 5; Figure 8a shows the photo sensor array, multiplexer unit and A connection diagram of a signal readout unit; Fig. 8b shows another connection diagram of the photo sensor array, multiplexer unit and signal readout unit of Fig. 5; Fig. 8c shows the photo sensor array of Fig. 5, Another connection diagram of the multiplexer unit and the signal readout unit; FIG. 9 shows a connection structure diagram of the photo sensor array, the multiplexer unit and the signal readout unit of FIG. 5; A schematic diagram of the connection between the light sensor array and one of the multiplexer units; FIG. 11 shows a schematic diagram of a sensing operation in which the light sensor array of FIG. 5 is divided into three regions; FIG. 12 shows a working sequence corresponding to FIG. 11 Figure 13 shows a schematic diagram of a sensing operation in which the photo sensor array of Figure 5 is implemented in a multi-sub-screen mode, and a fingerprint sensing area is located in a sub-screen; Figure 14 shows the light of Figure 5 The sensor array is implemented in a multi-sub-screen manner, and a fingerprint sensing area is a schematic diagram of a sensing operation spanning two sub-screens; FIG. 15 shows the photo sensor array of FIG. 5 with multiple sub-screens Mode is implemented, and a fingerprint sensing area is a schematic diagram of another sensing operation spanning two sub-screens; and FIG. 16 shows the photo sensor array of FIG. 5 implemented in a multi-sub-screen mode, and a fingerprint sensor A schematic diagram of a sensing operation spanning three sub-screens.
1:任意位置指紋檢測電路 1: Any position fingerprint detection circuit
2:光感測器陣列 2: Light sensor array
3:顯示面板 3: display panel
10:控制單元 10: Control unit
11:閘極驅動單元 11: Gate drive unit
12:多工器單元 12: Multiplexer unit
13:訊號讀出單元 13: Signal readout unit
Claims (10)
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