TW202203442A - Fingerprint pixel unit, fingerprint display device and integrated circuit and method for driving the same - Google Patents

Fingerprint pixel unit, fingerprint display device and integrated circuit and method for driving the same Download PDF

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TW202203442A
TW202203442A TW109144891A TW109144891A TW202203442A TW 202203442 A TW202203442 A TW 202203442A TW 109144891 A TW109144891 A TW 109144891A TW 109144891 A TW109144891 A TW 109144891A TW 202203442 A TW202203442 A TW 202203442A
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transistor
reset
fingerprint
line
connection terminal
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TW109144891A
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Chinese (zh)
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TWI765481B (en
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施博盛
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敦泰電子股份有限公司
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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/13338—Input devices, e.g. touch panels
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/136286—Wiring, e.g. gate line, drain line

Abstract

A fingerprint pixel unit includes a photo sensor, a capacitor, a reset transistor, a reset switch transistor, a drive transistor, and a select transistor. The capacitor has two ends respectively connected to the first and second ends of the photo sensor. The control end of the reset switch transistor is connected to a reset switch control line. The reset transistor and the reset switch transistor are connected in series between a first voltage and the first end of the photo sensor. The drive transistor has a control end connected to the first end of the photo sensor, a first connection end connected to a second voltage and a second connection end. The select transistor is connected between the second end of the drive transistor and a readout line.

Description

指紋畫素單元、指紋顯示裝置及驅動其之積體電路及方法Fingerprint pixel unit, fingerprint display device and integrated circuit and method for driving the same

本發明係關於指紋畫素之技術領域，尤指一種指紋畫素單元及整合光學指紋感測器與平面顯示面板的指紋顯示裝置及驅動其之積體電路及方法。The present invention relates to the technical field of fingerprint pixels, and more particularly, to a fingerprint pixel unit, a fingerprint display device integrating an optical fingerprint sensor and a flat display panel, and an integrated circuit and method for driving the same.

圖1為一用以說明整合光學指紋感測器與液晶顯示(LCD display)面板的示意圖。其中，指紋感測器(fingerprint sensor)11是例如設置在液晶顯示面板結構的薄膜電晶體層12與濾光基板層13之間的位置，使得來自背光源的光線遇到玻璃基板15上的手指後可反射至指紋感測器11，而由於指紋的波峰與波谷的反射率不同，因此，根據指紋感測器11的感應量，便可重建出指紋圖像。FIG. 1 is a schematic diagram illustrating the integration of an optical fingerprint sensor and a liquid crystal display (LCD display) panel. The fingerprint sensor 11 is, for example, disposed between the thin film transistor layer 12 and the filter substrate layer 13 of the liquid crystal display panel structure, so that the light from the backlight meets the finger on the glass substrate 15 Then, it can be reflected to the fingerprint sensor 11 , and since the reflectivity of the peaks and valleys of the fingerprint is different, the fingerprint image can be reconstructed according to the sensing amount of the fingerprint sensor 11 .

為驅動前述指紋感測器以進行在顯示面板上的指紋辨識，一般需要額外設置一重置線(RST)及一選擇線(SEL)來控制指紋感測器11的運作，然由於光學式的指紋感測器11是內嵌於液晶顯示面板的畫素中，因此，此增加的重置線(RST)及選擇線(SEL)將造成液晶顯示面板的開口率大幅降低，導致顯示品質的下降。In order to drive the aforementioned fingerprint sensor for fingerprint identification on the display panel, it is generally necessary to additionally set a reset line (RST) and a select line (SEL) to control the operation of the fingerprint sensor 11. However, due to the optical The fingerprint sensor 11 is embedded in the pixels of the liquid crystal display panel. Therefore, the increased reset line (RST) and select line (SEL) will greatly reduce the aperture ratio of the liquid crystal display panel, resulting in a decrease in display quality. .

因此，在習知指紋顯示裝置的設計上，實仍存在有諸多缺失而有予以改善之必要。Therefore, there are still many deficiencies in the design of the conventional fingerprint display device, and it is necessary to improve it.

本發明之目的主要係在提供一種指紋畫素單元、指紋顯示裝置及驅動其之積體電路及方法，藉由導入重置開關電晶體或是導入重置開關電晶體與選擇開關電晶體來做顯示掃描線、重置線、與選擇線功能之間的切換，可將顯示掃描線、重置線、與選擇線整合成一條，或是藉由只導入重置開關電晶體來做重置線與選擇線功能之間的切換，可將重置線與選擇線整合成一條指紋複用線，以有效改善面板開口率。The main purpose of the present invention is to provide a fingerprint pixel unit, a fingerprint display device and an integrated circuit and method for driving the same, which are made by introducing a reset switch transistor or introducing a reset switch transistor and a selection switch transistor. Switch between display scan line, reset line, and select line function, can integrate display scan line, reset line, and select line into one, or use only reset switch transistor as reset line Switching with the select line function can integrate the reset line and the select line into a fingerprint multiplexing line to effectively improve the panel aperture ratio.

依據本發明之一特色，係提出一種指紋畫素單元，包括：一光學感應元件，具有一第一端及一第二端連接至一偏壓電壓；一電容，具有兩端分別連接至該光學感應元件的第一端及第二端；一重置電晶體，具有一控制端、一第一連接端、及一第二連接端；一重置開關電晶體，具有一控制端連接至一重置開關控制走線、一第一連接端、及一第二連接端，其中，該重置電晶體與重置開關電晶體串接於一第一電壓與該光學感應元件的第一端之間；一驅動電晶體，具有一控制端連接至該光學感應元件的第一端、一第一連接端連接於一第二電壓、及一第二連接端；以及一選擇電晶體，具有一控制端、一第一連接端、及一第二連接端，該選擇電晶體連接於該驅動電晶體的第二連接端與一讀出線之間。According to one feature of the present invention, a fingerprint pixel unit is provided, comprising: an optical sensing element having a first end and a second end connected to a bias voltage; a capacitor having both ends connected to the optical sensor respectively The first end and the second end of the sensing element; a reset transistor with a control end, a first connection end, and a second connection end; a reset switch transistor with a control end connected to a reset A switch control trace, a first connection end, and a second connection end are arranged, wherein the reset transistor and the reset switch transistor are connected in series between a first voltage and the first end of the optical sensing element ; a driving transistor with a control end connected to the first end of the optical sensing element, a first connection end connected to a second voltage, and a second connection end; and a selection transistor with a control end , a first connection end, and a second connection end, the selection transistor is connected between the second connection end of the drive transistor and a readout line.

依據本發明之另一特色，係提出一種指紋畫素單元，包括：一光學感應元件，具有一第一端及一第二端；一電容，具有兩端分別連接至該光學感應元件的第一端及第二端；一重置電晶體，具有一控制端、一第一連接端、及一第二連接端；一重置開關電晶體，具有一控制端連接至一重置開關控制走線、一第一連接端、及一第二連接端，其中，該重置電晶體與重置開關電晶體串接於一第三電壓與該光學感應元件的第一端之間；以及一驅動電晶體，具有一控制端連接至該光學感應元件的第一端、一第一連接端、及一第二連接端，該驅動電晶體連接於一第四電壓與一讀出線之間。According to another feature of the present invention, a fingerprint pixel unit is provided, comprising: an optical sensing element having a first end and a second end; a capacitor having a first terminal whose two ends are respectively connected to the optical sensing element terminal and second terminal; a reset transistor with a control terminal, a first connection terminal, and a second connection terminal; a reset switch transistor with a control terminal connected to a reset switch control line , a first connection end, and a second connection end, wherein the reset transistor and the reset switch transistor are connected in series between a third voltage and the first end of the optical sensing element; and a driving power The crystal has a control end connected to the first end of the optical sensing element, a first connection end, and a second connection end, and the driving transistor is connected between a fourth voltage and a readout line.

依據本發明之再一特色，係提出一種指紋顯示裝置，其具有複數畫素列，至少一畫素列具有複數個顯示畫素單元與複數個指紋畫素單元，以被驅動來進行顯示及指紋感測，其中，每一指紋畫素單元包括：一光學感應元件，具有一第一端及一第二端連接至一偏壓電壓；一電容，具有兩端分別連接至該光學感應元件的第一端及第二端；一重置電晶體，具有一控制端、一第一連接端、及一第二連接端；一重置開關電晶體，具有一控制端連接至一重置開關控制走線、一第一連接端、及一第二連接端，其中，該重置電晶體與重置開關電晶體串接於一第一電壓與該光學感應元件的第一端之間；一驅動電晶體，具有一控制端連接至該光學感應元件的第一端、一第一連接端連接於一第二電壓、及一第二連接端；以及一選擇電晶體，具有一控制端、一第一連接端、及一第二連接端，該選擇電晶體連接於該驅動電晶體的第二連接端與一讀出線之間。According to a further feature of the present invention, a fingerprint display device is provided, which has a plurality of pixel rows, and at least one pixel row has a plurality of display pixel units and a plurality of fingerprint pixel units to be driven to perform display and fingerprinting Sensing, wherein each fingerprint pixel unit includes: an optical sensing element having a first terminal and a second terminal connected to a bias voltage; a capacitor having a first terminal whose two ends are respectively connected to the optical sensing element one end and a second end; a reset transistor with a control end, a first connection end, and a second connection end; a reset switch transistor with a control end connected to a reset switch control circuit line, a first connection end, and a second connection end, wherein the reset transistor and the reset switch transistor are connected in series between a first voltage and the first end of the optical sensing element; a driving power a crystal having a control end connected to the first end of the optical sensing element, a first connection end connected to a second voltage, and a second connection end; and a selection transistor having a control end, a first connection end A connection end and a second connection end, the selection transistor is connected between the second connection end of the driving transistor and a readout line.

依據本發明之又一特色，係提出一種指紋顯示裝置，其具有複數畫素列，至少一畫素列具有複數個顯示畫素單元與複數個指紋畫素單元，以被驅動來進行顯示及指紋感測，其中，每一指紋畫素單元包括：一光學感應元件，具有一第一端及一第二端連接；一電容，具有兩端分別連接至該光學感應元件的第一端及第二端；一重置電晶體，具有一控制端、一第一連接端、及一第二連接端；一重置開關電晶體，具有一控制端連接至一重置開關控制走線、一第一連接端、及一第二連接端，其中，該重置電晶體與重置開關電晶體串接於一第三電壓與該光學感應元件的第一端之間；以及一驅動電晶體，具有一控制端連接至該光學感應元件的第一端、一第一連接端、及一第二連接端，該驅動電晶體連接於一第四電壓與一讀出線之間。According to another feature of the present invention, a fingerprint display device is provided, which has a plurality of pixel rows, and at least one pixel row has a plurality of display pixel units and a plurality of fingerprint pixel units to be driven to perform display and fingerprinting Sensing, wherein each fingerprint pixel unit includes: an optical sensing element with a first end and a second end connected; a capacitor with two ends respectively connected to the first end and the second end of the optical sensing element terminal; a reset transistor with a control terminal, a first connection terminal, and a second connection terminal; a reset switch transistor with a control terminal connected to a reset switch control line, a first a connecting end, and a second connecting end, wherein the reset transistor and the reset switch transistor are connected in series between a third voltage and the first end of the optical sensing element; and a driving transistor having a The control end is connected to the first end of the optical sensing element, a first connection end, and a second connection end, and the driving transistor is connected between a fourth voltage and a readout line.

依據本發明之更一特色，係提出驅動前述指紋顯示裝置的方法及控制前述指紋顯示裝置的積體電路。According to a further feature of the present invention, a method for driving the fingerprint display device and an integrated circuit for controlling the fingerprint display device are proposed.

以上概述與接下來的詳細說明皆為示範性質，是為了進一步說明本發明的申請專利範圍，而有關本發明的其他目的與優點，將在後續的說明與圖式加以闡述。The above overview and the following detailed description are exemplary in nature, and are intended to further illustrate the scope of the present invention, and other objects and advantages of the present invention will be explained in the following descriptions and drawings.

為了使本發明的目的、技術方案及優點更加清楚明白，以下結合附圖及實施例，對本發明進行進一步詳細說明。應當理解，此處所描述的具體實施例僅僅用以解釋本發明的實施方式，並不用於限定本發明。In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the embodiments of the present invention, and are not used to limit the present invention.

圖2(A)顯示一種光學指紋畫素單元21的電路圖，其為一種三電晶體(3T)指紋畫素電路，此指紋畫素單元21是由一重置電晶體T1、一驅動電晶體T2、一選擇電晶體T3、一光學感應元件(photo sensor)PS、與一電容C所實現，而由複數個指紋畫素單元21組成的陣列即構成一指紋感測器，其中，於複數個指紋畫素單元組成的陣列中，同一行(column)的指紋畫素單元21是共用一負載電晶體T4，如圖2(A)中所繪示的指紋畫素單元21所連接的負載電晶體T4。此外，圖2(A)中所繪示的電晶體T1~T4為NMOS電晶體，但此僅為舉例而非限定，可想而知地，電晶體T1~T4亦可為其他類型的MOS電晶體，例如PMOS電晶體。而每一電晶體T1~T4是具有一控制端及兩連接端，以MOS電晶體而言，控制端為閘極(G)，兩連接端為汲極(D)及源極(S) 。此外，可選擇地，重置電晶體T1可以雙重閘極(dual gate)的形式所構成。FIG. 2(A) shows a circuit diagram of an optical fingerprint pixel unit 21 , which is a three-transistor (3T) fingerprint pixel circuit. The fingerprint pixel unit 21 is composed of a reset transistor T1 and a drive transistor T2 , a selection transistor T3, a photo sensor PS, and a capacitor C are realized, and an array composed of a plurality of fingerprint pixel units 21 constitutes a fingerprint sensor, wherein, in a plurality of fingerprints In the array composed of pixel units, the fingerprint pixel units 21 in the same row share a load transistor T4, such as the load transistor T4 connected to the fingerprint pixel unit 21 as shown in FIG. 2(A). . In addition, the transistors T1-T4 shown in FIG. 2(A) are NMOS transistors, but this is only an example and not a limitation. It is conceivable that the transistors T1-T4 can also be other types of MOS transistors. crystals, such as PMOS transistors. Each transistor T1-T4 has a control terminal and two connection terminals. For a MOS transistor, the control terminal is the gate (G), and the two connection terminals are the drain (D) and the source (S). In addition, alternatively, the reset transistor T1 may be formed in the form of a dual gate.

於前述圖2(A)的光學指紋畫素單元21中，重置電晶體T1的控制端(G)連接重置線RST，其兩連接端(D,S)分別連接至第一電壓VDD1及光學感應元件PS。驅動電晶體T2的控制端(G)連接至重置電晶體T1的連接端(S)及光學感應元件PS，其兩連接端(D,S)分別連接至第二電壓VDD2及選擇電晶體T3的連接端(D)，其中，第一電壓VDD1及第二電壓VDD2可為相同的DC電壓源或不同的DC電壓源。選擇電晶體T3的控制端(G)連接選擇線SEL，其兩連接端(D,S)分別連接至驅動電晶體T2的連接端(S)及讀出線RO。電容C的兩端分別連接至驅動電晶體T2的控制端(G)及偏壓電壓Vbias，此電容C可以是光學感應元件PS內部本身元件所構成的電容結構，或是為額外設置的電容，或兩者的組合。光學感應元件PS的兩端分別連接至重置電晶體T1的連接端(S) 及偏壓電壓Vbias。負載電晶體T4的控制端(G)連接至第五電壓VB，其兩連接端(D,S)分別連接至讀出線RO及第六電壓VSS。In the aforementioned optical fingerprint pixel unit 21 of FIG. 2(A), the control terminal (G) of the reset transistor T1 is connected to the reset line RST, and the two connection terminals (D, S) thereof are respectively connected to the first voltage VDD1 and the reset line RST. Optical sensing element PS. The control terminal (G) of the driving transistor T2 is connected to the connection terminal (S) of the reset transistor T1 and the optical sensing element PS, and the two connection terminals (D, S) thereof are respectively connected to the second voltage VDD2 and the selection transistor T3 The connection terminal (D) of , wherein the first voltage VDD1 and the second voltage VDD2 can be the same DC voltage source or different DC voltage sources. The control terminal (G) of the selection transistor T3 is connected to the selection line SEL, and the two connection terminals (D, S) of the selection transistor T3 are respectively connected to the connection terminal (S) of the driving transistor T2 and the readout line RO. The two ends of the capacitor C are respectively connected to the control terminal (G) of the driving transistor T2 and the bias voltage Vbias. The capacitor C can be a capacitor structure formed by the optical sensing element PS itself, or an additional capacitor. or a combination of both. Two ends of the optical sensing element PS are respectively connected to the connection terminal (S) of the reset transistor T1 and the bias voltage Vbias. The control terminal (G) of the load transistor T4 is connected to the fifth voltage VB, and the two connection terminals (D, S) thereof are respectively connected to the readout line RO and the sixth voltage VSS.

以前述圖2(A)的光學指紋畫素單元21進行指紋感測的運作如下：首先驅動重置線RST以開啟重置電晶體T1，將電容C的端點電壓重置到預設值，亦即，第一電壓VDD；接著，關閉重置電晶體T1，使光學感應元件PS持續曝光一段時間，而隨著照光強度與曝光時間的不同，電容C的放電量不同，因此電容C的端點電壓也不同；當達到預設的曝光時間，驅動選擇線RST以開啟選擇電晶體T3，使得驅動電晶體T2輸出電流到讀出線RO，其中，輸出電流的大小與電容C連接到驅動電晶體T2的控制端(G)的端點的電壓有關，亦即與照光強度及曝光時間有關，而連接讀出線RO的負載電晶體T4是相當於一主動負載(active load)，因此，讀出線RO的讀出端RO’的電壓與重置電晶體T1及主動負載的阻值有關，藉由積體電路讀出此讀出端RO’的電壓，可判斷照光強度。The operation of fingerprint sensing performed by the optical fingerprint pixel unit 21 of the aforementioned FIG. 2(A) is as follows: firstly, the reset line RST is driven to turn on the reset transistor T1, and the terminal voltage of the capacitor C is reset to a preset value, That is, the first voltage VDD; then, the reset transistor T1 is turned off, so that the optical sensing element PS is continuously exposed for a period of time, and the discharge amount of the capacitor C varies with the illumination intensity and exposure time. The point voltages are also different; when the preset exposure time is reached, the selection line RST is driven to turn on the selection transistor T3, so that the driving transistor T2 outputs current to the readout line RO, wherein the magnitude of the output current is the same as that of the capacitor C connected to the driving circuit. The voltage at the end of the control terminal (G) of the crystal T2 is related to the light intensity and exposure time, and the load transistor T4 connected to the readout line RO is equivalent to an active load. Therefore, the readout The voltage of the readout terminal RO' of the outgoing line RO is related to the resistance of the reset transistor T1 and the active load. By reading the voltage of the readout terminal RO' through the integrated circuit, the illumination intensity can be determined.

圖2(B)顯示另一種光學指紋畫素單元21的電路圖，其為一種二電晶體(2T)指紋畫素電路，此指紋畫素單元21是由一重置電晶體T1、一驅動電晶體T2、一光學感應元件(photo sensor)PS、與一電容C所實現，而由複數個指紋畫素單元21組成的陣列即構成一指紋感測器，其中，於複數個指紋畫素單元21組成的陣列中，同一行(column)的指紋畫素單元21是共用一負載電晶體T4，如圖2(B)中所繪示的指紋畫素單元21所連接的負載電晶體T4。此外，圖2(B)中所繪示的電晶體T1、T2及T4為NMOS電晶體，但此僅為舉例而非限定，可想而知地，電晶體T1、T2及T4亦可為其他類型的MOS電晶體，例如PMOS電晶體。而每一電晶體T1、T2及T4是具有一控制端及兩連接端，以MOS電晶體而言，控制端為閘極(G)，兩連接端為汲極(D)及源極(S) 。此外，可選擇地，重置電晶體T1可以雙重閘極(dual gate)的形式所構成。FIG. 2(B) shows a circuit diagram of another optical fingerprint pixel unit 21 , which is a two-transistor (2T) fingerprint pixel circuit. The fingerprint pixel unit 21 is composed of a reset transistor T1 and a driving transistor. T2 is realized by a photo sensor PS and a capacitor C, and an array composed of a plurality of fingerprint pixel units 21 constitutes a fingerprint sensor, wherein a plurality of fingerprint pixel units 21 are formed In the array, the fingerprint pixel units 21 in the same row share a load transistor T4, such as the load transistor T4 connected to the fingerprint pixel unit 21 as shown in FIG. 2(B). In addition, the transistors T1, T2 and T4 shown in FIG. 2(B) are NMOS transistors, but this is only an example and not a limitation. It is conceivable that the transistors T1, T2 and T4 can also be other transistors type of MOS transistor, such as a PMOS transistor. Each transistor T1, T2 and T4 has a control terminal and two connection terminals. For a MOS transistor, the control terminal is the gate (G), and the two connection terminals are the drain (D) and the source (S). ) . In addition, alternatively, the reset transistor T1 may be formed in the form of a dual gate.

於前述圖2(B)的光學指紋畫素單元21中，重置電晶體T1的控制端(G)連接重置線RST，其兩連接端(D,S)分別連接至第三電壓SVSS及光學感應元件PS。驅動電晶體T2的控制端(G)連接至重置電晶體T1的連接端(S)及光學感應元件PS，其兩連接端(D,S)分別連接至第四電壓SVDD及讀出線RO。光學感應元件PS的兩端分別連接至重置電晶體T1的連接端(S)及驅動電晶體T2的控制端(G)、及選擇線SEL。電容C的兩端亦分別連接至重置電晶體T1的連接端(S)及驅動電晶體T2的控制端(G)、及選擇線SEL，此電容C可以是光學感應元件PS內部本身元件所構成的電容結構，或是為額外設置的電容，或兩者的組合。負載電晶體T4的控制端(G)連接第五電壓VB，其連接端(D)連接至讀出線RO。In the optical fingerprint pixel unit 21 of the aforementioned FIG. 2(B), the control terminal (G) of the reset transistor T1 is connected to the reset line RST, and the two connection terminals (D, S) of the reset transistor T1 are respectively connected to the third voltage SVSS and the reset line RST. Optical sensing element PS. The control terminal (G) of the driving transistor T2 is connected to the connection terminal (S) of the reset transistor T1 and the optical sensing element PS, and the two connection terminals (D, S) thereof are respectively connected to the fourth voltage SVDD and the readout line RO . Two ends of the optical sensing element PS are respectively connected to the connection terminal (S) of the reset transistor T1 , the control terminal (G) of the driving transistor T2 , and the selection line SEL. The two ends of the capacitor C are also respectively connected to the connection terminal (S) of the reset transistor T1, the control terminal (G) of the drive transistor T2, and the selection line SEL. The capacitor C can be the internal component of the optical sensing element PS. The formed capacitor structure is either an additional capacitor, or a combination of the two. The control terminal (G) of the load transistor T4 is connected to the fifth voltage VB, and the connection terminal (D) thereof is connected to the readout line RO.

以前述圖2(B)的光學指紋畫素單元21進行指紋感測的運作如下：首先驅動重置線RST以開啟重置電晶體T1，將電容C的端點電壓Vp重置到預設值，亦即，第三電壓SVSS，藉此第三電壓SVSS以確保驅動電晶體T2 關閉；接著，關閉重置電晶體T1，使光學感應元件PS持續曝光一段時間，而隨著照光強度與曝光時間的不同，電容C的放電量不同，因此電容C的端點電壓Vp也不同；當達到預設的曝光時間時，驅動選擇線SEL以將選擇線SEL的電壓由低準位切到高準位(電位差∆V)，而因為耦合效應，電容C的端點電壓Vp大致上也會提高∆V，因此可以打開驅動電晶體T2，輸出電流到讀出線RO。輸出電流大小與電容C的端點電壓Vp有關，亦即與照光強度及曝光時間有關。而連接讀出線RO的負載電晶體T4是相當於一主動負載(active load)。因此，讀出線RO的讀出端RO’的電壓與重置電晶體T1及主動負載的阻值有關，藉由積體電路讀出此讀出端RO’的電壓，可判斷照光強度。The operation of fingerprint sensing performed by the optical fingerprint pixel unit 21 of the aforementioned FIG. 2(B) is as follows: firstly, the reset line RST is driven to turn on the reset transistor T1, and the terminal voltage Vp of the capacitor C is reset to a preset value , that is, the third voltage SVSS, whereby the third voltage SVSS ensures that the driving transistor T2 is turned off; then, the reset transistor T1 is turned off, so that the optical sensing element PS is continuously exposed for a period of time, and with the illumination intensity and exposure time The discharge amount of the capacitor C is different, so the terminal voltage Vp of the capacitor C is also different; when the preset exposure time is reached, the selection line SEL is driven to switch the voltage of the selection line SEL from a low level to a high level. (potential difference ΔV), and due to the coupling effect, the terminal voltage Vp of the capacitor C will also increase by ΔV approximately, so the drive transistor T2 can be turned on and output current to the readout line RO. The output current is related to the terminal voltage Vp of the capacitor C, that is, related to the illumination intensity and exposure time. The load transistor T4 connected to the readout line RO is equivalent to an active load. Therefore, the voltage of the readout terminal RO' of the readout line RO is related to the resistance of the reset transistor T1 and the active load. By reading the voltage of the readout terminal RO' through the integrated circuit, the illumination intensity can be determined.

為了避免如圖2(A)及2(B)需額外設置重置線RST及選擇線SEL所造成顯示面板的開口率大幅降低之問題，於本發明的指紋顯示裝置中，藉由導入重置開關電晶體SW-RST與選擇開關電晶體SW-SEL來做顯示掃描線、重置線、與選擇線功能之間的切換，可將顯示掃描線、重置線、與選擇線整合成一條，且不會因開關電晶體的走線而降低開口率，因此可有效改善面板開口率。In order to avoid the problem that the aperture ratio of the display panel is greatly reduced due to additionally setting the reset line RST and the selection line SEL as shown in FIGS. The switching transistor SW-RST and the selection switching transistor SW-SEL are used to switch between the functions of the display scan line, the reset line, and the select line, which can integrate the display scan line, the reset line, and the select line into one, And the aperture ratio will not be reduced due to the wiring of the switching transistor, so the aperture ratio of the panel can be effectively improved.

圖2(C)顯示本發明一實施例的光學指紋畫素單元23的電路圖，其為一種導入重置開關電晶體SW-RST的三電晶體(3T)指紋畫素電路，此指紋畫素單元23-1的構成元件相同於圖2(A)的指紋畫素單元21，但加入一重置開關電晶體SW-RST。如圖所示，光學感應元件PS具有一第一端e1及一第二端e2連接至一偏壓電壓Vbias；電容C具有兩端分別連接至該光學感應元件PS的第一端e1及第二端e2，此電容C可以是光學感應元件PS內部本身元件所構成的電容結構，或是為額外設置的電容，或兩者的組合；重置電晶體T1具有一控制端(G)、一第一連接端(D)、及一第二連接端(S)；重置開關電晶體SW-RST具有一控制端(G)連接至一重置開關控制走線G-RST、一第一連接端(D)、及一第二連接端(S)，其中，重置電晶體T1與重置開關電晶體SW-RST經由各自的連接端串接於第一電壓VDD1與光學感應元件PS的第一端e1之間；驅動電晶體T2具有一控制端(G)連接至該光學感應元件PS的第一端e1、一第一連接端(D)連接於第二電壓VDD2、及一第二連接端(S)，其中，第一電壓VDD1及第二電壓VDD2可為相同的DC電壓源或不同的DC電壓源；選擇電晶體T3具有一控制端(G)、一第一連接端(D)、及一第二連接端(S)，選擇電晶體T3經由其連接端連接於驅動電晶體T2的第二連接端(S)與讀出線RO之間；此外，負載電晶體T4的控制端(G)連接至第五電壓VB，其兩連接端(D,S)分別連接至讀出線RO及第六電壓VSS。特定地，選擇電晶體T3的第一連接端(D)連接至驅動電晶體T2的第二連接端(S)，選擇電晶體T3的第二連接端(S)連接讀出線RO，重置電晶體T1的第二連接端(S)連接至光學感應元件PS的第一端e1，重置電晶體T1的第一連接端(D)連接至重置開關電晶體SW-RST的第二連接端(S)，重置開關電晶體SW-RST的第一連接端(D)連接至第一電壓VDD1。FIG. 2(C) shows a circuit diagram of an optical fingerprint pixel unit 23 according to an embodiment of the present invention, which is a three-transistor (3T) fingerprint pixel circuit incorporating a reset switch transistor SW-RST. The fingerprint pixel unit The constituent elements of 23-1 are the same as the fingerprint pixel unit 21 of FIG. 2(A), but a reset switching transistor SW-RST is added. As shown in the figure, the optical sensing element PS has a first terminal e1 and a second terminal e2 connected to a bias voltage Vbias; the capacitor C has both ends connected to the first terminal e1 and the second terminal e1 of the optical sensing element PS, respectively Terminal e2, the capacitor C can be a capacitor structure formed by the optical sensing element PS itself, or an additional capacitor, or a combination of the two; the reset transistor T1 has a control terminal (G), a first A connection terminal (D), and a second connection terminal (S); the reset switch transistor SW-RST has a control terminal (G) connected to a reset switch control line G-RST, a first connection terminal (D), and a second connection terminal (S), wherein the reset transistor T1 and the reset switching transistor SW-RST are connected in series to the first voltage VDD1 and the first of the optical sensing element PS through their respective connection terminals between the terminals e1; the driving transistor T2 has a control terminal (G) connected to the first terminal e1 of the optical sensing element PS, a first connection terminal (D) connected to the second voltage VDD2, and a second connection terminal (S), wherein the first voltage VDD1 and the second voltage VDD2 can be the same DC voltage source or different DC voltage sources; the selection transistor T3 has a control terminal (G), a first connection terminal (D), and a second connection terminal (S), the selection transistor T3 is connected between the second connection terminal (S) of the driving transistor T2 and the readout line RO via its connection terminal; in addition, the control terminal (S) of the load transistor T4 G) is connected to the fifth voltage VB, and its two connection terminals (D, S) are respectively connected to the readout line RO and the sixth voltage VSS. Specifically, the first connection terminal (D) of the selection transistor T3 is connected to the second connection terminal (S) of the driving transistor T2, the second connection terminal (S) of the selection transistor T3 is connected to the readout line RO, and the reset The second connection terminal (S) of the transistor T1 is connected to the first terminal e1 of the optical sensing element PS, and the first connection terminal (D) of the reset transistor T1 is connected to the second connection of the reset switch transistor SW-RST The terminal (S), the first connection terminal (D) of the reset switching transistor SW-RST is connected to the first voltage VDD1.

圖2(D)顯示本發明另一實施例的光學指紋畫素單元25的電路圖，其為一種導入重置開關電晶體SW-RST及選擇開關電晶體SW-SEL的三電晶體(3T)指紋畫素電路，此指紋畫素單元25-1的構成元件相同於圖2(C)的指紋畫素單元23-1，但更加入一選擇開關電晶體SW-SEL。如圖所示，光學感應元件PS具有一第一端e1及一第二端e2連接至一偏壓電壓Vbias；電容C具有兩端分別連接至該光學感應元件PS的第一端e1及第二端e2，此電容C可以是光學感應元件PS內部本身元件所構成的電容結構，或是為額外設置的電容，或兩者的組合；重置電晶體T1具有一控制端(G)、一第一連接端(D)、及一第二連接端(S)；重置開關電晶體SW-RST具有一控制端(G)連接至一重置開關控制走線G-RST、一第一連接端(D)、及一第二連接端(S)，其中，重置電晶體T1與重置開關電晶體SW-RST經由各自的連接端串接於第一電壓VDD1與光學感應元件PS的第一端e1之間；驅動電晶體T2具有一控制端(G)連接至該光學感應元件PS的第一端e1、一第一連接端(D)連接於第二電壓VDD2、及一第二連接端(S) ，其中，第一電壓VDD1及第二電壓VDD2可為相同的DC電壓源或不同的DC電壓源；選擇電晶體T3具有一控制端(G)、一第一連接端(D)、及一第二連接端(S)，選擇電晶體T3經由其連接端連接於驅動電晶體T2的第二連接端(S)與讀出線RO之間；選擇開關電晶體SW-SEL具有一控制端(G)連接至一選擇開關控制走線G-SEL、一第一連接端(D)、及一第二連接端(S)，其中，選擇開關電晶體SW-SEL是以其連接端連接於第二電壓VDD2至讀出線RO的電流路徑上，亦即選擇電晶體T3及選擇開關電晶體SW-SEL經由各自的連接端串接於驅動電晶體T2的第二連接端(S)與讀出線RO之間，或是選擇開關電晶體SW-SEL經由其連接端連接於第二電壓VDD2與驅動電晶體T2之間；此外，負載電晶體T4的控制端(G)連接至第五電壓VB，其兩連接端(D,S)分別連接至讀出線RO及第六電壓VSS。特定地，重置電晶體T1的第二連接端(S)連接至光學感應元件PS的第一端e1，重置電晶體T1的第一連接端(D)連接至重置開關電晶體SW-RST的第二連接端(S)，重置開關電晶體SW-RST的第一連接端(D)連接至第一電壓VDD1，選擇開關電晶體SW-SEL的第二連接端(S)連接至讀出線RO，選擇開關電晶體SW-SEL的第一連接端(D)連接至選擇電晶體T3的第二連接端(S)，選擇電晶體T3的第一連接端(D)連接至驅動電晶體T2的第二連接端(S)。2(D) shows a circuit diagram of an optical fingerprint pixel unit 25 according to another embodiment of the present invention, which is a three-transistor (3T) fingerprint with a reset switching transistor SW-RST and a selection switching transistor SW-SEL introduced In the pixel circuit, the constituent elements of the fingerprint pixel unit 25-1 are the same as the fingerprint pixel unit 23-1 in FIG. 2(C), but a selection switch transistor SW-SEL is added. As shown in the figure, the optical sensing element PS has a first terminal e1 and a second terminal e2 connected to a bias voltage Vbias; the capacitor C has both ends connected to the first terminal e1 and the second terminal e1 of the optical sensing element PS, respectively Terminal e2, the capacitor C can be a capacitor structure formed by the optical sensing element PS itself, or an additional capacitor, or a combination of the two; the reset transistor T1 has a control terminal (G), a first A connection terminal (D), and a second connection terminal (S); the reset switch transistor SW-RST has a control terminal (G) connected to a reset switch control line G-RST, a first connection terminal (D), and a second connection terminal (S), wherein the reset transistor T1 and the reset switching transistor SW-RST are connected in series to the first voltage VDD1 and the first of the optical sensing element PS through their respective connection terminals between the terminals e1; the driving transistor T2 has a control terminal (G) connected to the first terminal e1 of the optical sensing element PS, a first connection terminal (D) connected to the second voltage VDD2, and a second connection terminal (S), wherein the first voltage VDD1 and the second voltage VDD2 can be the same DC voltage source or different DC voltage sources; the selection transistor T3 has a control terminal (G), a first connection terminal (D), and a second connection terminal (S), the selection transistor T3 is connected between the second connection terminal (S) of the driving transistor T2 and the readout line RO through its connection terminal; the selection switch transistor SW-SEL has a control The terminal (G) is connected to a selection switch control line G-SEL, a first connection terminal (D), and a second connection terminal (S), wherein the selection switch transistor SW-SEL is connected with its connection terminal On the current path from the second voltage VDD2 to the readout line RO, that is, the selection transistor T3 and the selection switch transistor SW-SEL are connected in series to the second connection terminal (S) of the driving transistor T2 and the second connection terminal (S) of the driving transistor T2 through their respective connection terminals. Between the readout lines RO, or the selection switch transistor SW-SEL is connected between the second voltage VDD2 and the driving transistor T2 via its connection terminal; in addition, the control terminal (G) of the load transistor T4 is connected to the fifth voltage The two connection terminals (D, S) of the voltage VB are respectively connected to the readout line RO and the sixth voltage VSS. Specifically, the second connection terminal (S) of the reset transistor T1 is connected to the first terminal e1 of the optical sensing element PS, and the first connection terminal (D) of the reset transistor T1 is connected to the reset switching transistor SW- The second connection terminal (S) of RST, the first connection terminal (D) of the reset switching transistor SW-RST is connected to the first voltage VDD1, and the second connection terminal (S) of the selection switching transistor SW-SEL is connected to The readout line RO, the first connection terminal (D) of the selection switch transistor SW-SEL is connected to the second connection terminal (S) of the selection transistor T3, and the first connection terminal (D) of the selection transistor T3 is connected to the drive The second connection terminal (S) of the transistor T2.

圖2(E)顯示本發明又一實施例的光學指紋畫素單元23的電路圖，其為一種導入重置開關電晶體SW-RST的二電晶體(2T)指紋畫素電路，此指紋畫素單元23-2的構成元件相同於圖2(B)的指紋畫素單元21，但加入一重置開關電晶體SW-RST。如圖所示，光學感應元件PS具有一第一端e1及一第二端e2；電容C具有兩端分別連接至光學感應元件PS的第一端e1及第二端e2，此電容C可以是光學感應元件PS內部本身元件所構成的電容結構，或是額外設置的電容，或兩者的組合；重置電晶體T1具有一控制端(G)、一第一連接端(D)、及一第二連接端(S)；重置開關電晶體SW-RST具有一控制端(G)連接至一重置開關控制走線G-RST、一第一連接端(D)、及一第二連接端(S)，其中，重置電晶體T1與重置開關電晶體SW-RST經由各自的連接端串接於第三電壓SVSS與光學感應元件PS的第一端e1之間；驅動電晶體T2具有一控制端(G)連接至光學感應元件PS的第一端e1、一第一連接端(D)、及一第二連接端(S)，驅動電晶體T2經由其連接端連接於第四電壓SVDD與讀出線RO之間；此外，負載電晶體T4的控制端(G)連接至第五電壓VB，其第一連接端(D)連接至讀出線RO。特定地，驅動電晶體T2的第一連接端(D)連接至第四電壓SVDD，驅動電晶體T2的第二連接端(S)連接至讀出線RO，重置電晶體T1的第二連接端(S)連接至光學感應元件PS的第一端e1，重置電晶體T1的第一連接端(D)連接至重置開關電晶體SW-RST的第二連接端(S)，重置開關電晶體SW-RST的第一連接端(D)連接至第三電壓SVSS。FIG. 2(E) shows a circuit diagram of the optical fingerprint pixel unit 23 according to another embodiment of the present invention, which is a two-transistor (2T) fingerprint pixel circuit incorporating a reset switch transistor SW-RST. The constituent elements of the unit 23-2 are the same as the fingerprint pixel unit 21 of FIG. 2(B), but a reset switching transistor SW-RST is added. As shown in the figure, the optical sensing element PS has a first end e1 and a second end e2; the capacitor C has two ends respectively connected to the first end e1 and the second end e2 of the optical sensing element PS, and the capacitor C can be The capacitance structure formed by the internal components of the optical sensing element PS, or an additional capacitor, or a combination of the two; the reset transistor T1 has a control terminal (G), a first connection terminal (D), and a The second connection terminal (S); the reset switch transistor SW-RST has a control terminal (G) connected to a reset switch control trace G-RST, a first connection terminal (D), and a second connection Terminal (S), wherein the reset transistor T1 and the reset switch transistor SW-RST are connected in series between the third voltage SVSS and the first terminal e1 of the optical sensing element PS through their respective connection terminals; the driving transistor T2 There is a control terminal (G) connected to the first terminal e1 of the optical sensing element PS, a first connection terminal (D), and a second connection terminal (S), and the driving transistor T2 is connected to the fourth terminal through its connection terminal. between the voltage SVDD and the readout line RO; in addition, the control terminal (G) of the load transistor T4 is connected to the fifth voltage VB, and the first connection terminal (D) of the load transistor T4 is connected to the readout line RO. Specifically, the first connection terminal (D) of the driving transistor T2 is connected to the fourth voltage SVDD, the second connection terminal (S) of the driving transistor T2 is connected to the readout line RO, and the second connection of the reset transistor T1 The terminal (S) is connected to the first terminal e1 of the optical sensing element PS, the first connection terminal (D) of the reset transistor T1 is connected to the second connection terminal (S) of the reset switching transistor SW-RST, and the reset The first connection terminal (D) of the switching transistor SW-RST is connected to the third voltage SVSS.

圖2(F)顯示本發明再一實施例的光學指紋畫素單元25的電路圖，其為一種導入重置開關電晶體SW-RST及選擇開關電晶體SW-SEL的二電晶體(2T)指紋畫素電路，此指紋畫素單元25-2的構成元件相同於圖2(E)的指紋畫素單元23-2，但更加入一選擇開關電晶體SW-SEL。如圖所示，光學感應元件PS具有一第一端e1及一第二端e2；電容C具有兩端分別連接至光學感應元件PS的第一端e1及第二端e2，此電容C可以是光學感應元件PS內部本身元件所構成的電容結構，或是額外設置的電容，或兩者的組合；重置電晶體T1具有一控制端(G)、一第一連接端(D)、及一第二連接端(S)；重置開關電晶體SW-RST具有一控制端(G)連接至一重置開關控制走線G-RST、一第一連接端(D)、及一第二連接端(S)，其中，重置電晶體T1與重置開關電晶體SW-RST經由各自的連接端串接於第三電壓SVSS與光學感應元件PS的第一端e1之間；驅動電晶體T2具有一控制端(G)連接至光學感應元件PS的第一端e1、一第一連接端(D)、及一第二連接端(S)，驅動電晶體T2經由其連接端連接於第四電壓SVDD與讀出線RO之間；選擇開關電晶體SW-SEL具有一控制端(G)連接至一選擇開關控制走線G-SEL、一第一連接端(D)、及一第二連接端(S)，其中，驅動電晶體T2及選擇開關電晶體SW-SEL經由各自的連接端串接於第四電壓SVDD與讀出線RO之間；此外，負載電晶體T4的控制端(G)連接至第五電壓VB，其第一連接端(D)連接至讀出線RO。特定地，重置電晶體T1的第二連接端(S)連接至光學感應元件PS的第一端e1，重置電晶體T1的第一連接端(D)連接至重置開關電晶體SW-RST的第二連接端(S)，重置開關電晶體SW-RST的第一連接端(D)連接至第三電壓SVSS，驅動電晶體T2的第二連接端(S)連接至讀出線RO，驅動電晶體T2的第一連接端(D)連接至選擇開關電晶體SW-SEL的第二連接端(S)，選擇開關電晶體SW-SEL的第一連接端(D)連接至該第四電壓SVDD。2(F) shows a circuit diagram of an optical fingerprint pixel unit 25 according to a further embodiment of the present invention, which is a two-transistor (2T) fingerprint with a reset switch transistor SW-RST and a selection switch transistor SW-SEL introduced In the pixel circuit, the constituent elements of the fingerprint pixel unit 25-2 are the same as the fingerprint pixel unit 23-2 in FIG. 2(E), but a selection switch transistor SW-SEL is added. As shown in the figure, the optical sensing element PS has a first end e1 and a second end e2; the capacitor C has two ends respectively connected to the first end e1 and the second end e2 of the optical sensing element PS, and the capacitor C can be The capacitance structure formed by the internal components of the optical sensing element PS, or an additional capacitor, or a combination of the two; the reset transistor T1 has a control terminal (G), a first connection terminal (D), and a The second connection terminal (S); the reset switch transistor SW-RST has a control terminal (G) connected to a reset switch control trace G-RST, a first connection terminal (D), and a second connection Terminal (S), wherein the reset transistor T1 and the reset switch transistor SW-RST are connected in series between the third voltage SVSS and the first terminal e1 of the optical sensing element PS through their respective connection terminals; the driving transistor T2 There is a control terminal (G) connected to the first terminal e1 of the optical sensing element PS, a first connection terminal (D), and a second connection terminal (S), and the driving transistor T2 is connected to the fourth terminal through its connection terminal. Between the voltage SVDD and the readout line RO; the selection switch transistor SW-SEL has a control terminal (G) connected to a selection switch control line G-SEL, a first connection terminal (D), and a second connection terminal (S), wherein, the driving transistor T2 and the selection switch transistor SW-SEL are connected in series between the fourth voltage SVDD and the readout line RO through their respective connection terminals; in addition, the control terminal (G) of the load transistor T4 ) is connected to the fifth voltage VB, and its first connection terminal (D) is connected to the readout line RO. Specifically, the second connection terminal (S) of the reset transistor T1 is connected to the first terminal e1 of the optical sensing element PS, and the first connection terminal (D) of the reset transistor T1 is connected to the reset switching transistor SW- The second connection terminal (S) of RST, the first connection terminal (D) of the reset switching transistor SW-RST is connected to the third voltage SVSS, and the second connection terminal (S) of the driving transistor T2 is connected to the readout line RO, the first connection terminal (D) of the driving transistor T2 is connected to the second connection terminal (S) of the selection switch transistor SW-SEL, and the first connection terminal (D) of the selection switch transistor SW-SEL is connected to the the fourth voltage SVDD.

請進一步參照圖3顯示本發明的指紋顯示裝置的一實施例的系統架構圖，其中，在一面板31的左右側設有顯示驅動的GOA電路33，而整合積體電路39在面板31的底側經由重置開關控制走線G-RST與選擇開關控制走線G-SEL來控制重置開關電晶體SW-RST與選擇開關電晶體SW-SEL，使得顯示驅動的GOA電路33根據該整合積體電路39的控制信號來依序驅動顯示掃描線G-disp以進行顯示及指紋感測，且感測的指紋資料是由讀出線RO讀出至該整合積體電路39以進行指紋辨識，特定地，於實際的電路中，讀出線RO在延伸出面板31後，可經由多工器與資料線複用同一線而進入該整合積體電路39，以節省整合積體電路39的接腳數目。於本發明中，面板31可為任何類型之平面顯示面板，例如LCD面板或OLED面板等。雖於本實施例顯示出顯示驅動的GOA電路33是設置於面板31的左右兩側，但本發明不以此為限，於其他實施例中，顯示驅動的GOA電路33亦可皆設置於面板31的一側。此外，本發明的指紋顯示裝置的面板31亦可提供觸控感應功能，例如藉由切割面板31的公共電極來作為觸控感應器(圖未示)，觸控感應器感應使用者手指之觸摸而將觸控訊號傳送至整合積體電路39以進行觸摸偵測而實現觸控感應功能，其中，切割公共電極作為觸控感應器為本領域技術人士所知，故在此不在贅述。也就是說，在一實施例中，本發明可以是提供具備指紋感測、觸控感應及顯示等三合一功能的電子裝置及可用來驅動此電子裝置的積體電路及其驅動方法。Please further refer to FIG. 3 to show a system architecture diagram of an embodiment of the fingerprint display device of the present invention, wherein a display-driven GOA circuit 33 is provided on the left and right sides of a panel 31 , and an integrated integrated circuit 39 is located at the bottom of the panel 31 . The reset switch transistor SW-RST and the selection switch transistor SW-SEL are controlled via the reset switch control line G-RST and the selection switch control line G-SEL, so that the GOA circuit 33 of the display driver is based on the integrated product The control signal of the integrated circuit 39 is used to sequentially drive the display scan lines G-disp for display and fingerprint sensing, and the sensed fingerprint data is read out to the integrated integrated circuit 39 by the readout line RO for fingerprint identification. Specifically, in an actual circuit, after the readout line RO extends out of the panel 31 , it can enter the integrated integrated circuit 39 by multiplexing the same line with the data line through a multiplexer, so as to save the connection of the integrated integrated circuit 39 . number of feet. In the present invention, the panel 31 can be any type of flat display panel, such as an LCD panel or an OLED panel. Although the present embodiment shows that the GOA circuits 33 for display driving are disposed on the left and right sides of the panel 31, the present invention is not limited to this. In other embodiments, the GOA circuits 33 for display driving can also be disposed on the panel. 31 side. In addition, the panel 31 of the fingerprint display device of the present invention can also provide a touch sensing function, for example, by cutting the common electrode of the panel 31 as a touch sensor (not shown), the touch sensor senses the touch of the user's finger The touch signal is transmitted to the integrated integrated circuit 39 for touch detection to realize the touch sensing function. The cutting of the common electrode as a touch sensor is known to those skilled in the art, so it is not repeated here. That is to say, in one embodiment, the present invention can provide an electronic device with three-in-one functions of fingerprint sensing, touch sensing and display, and an integrated circuit for driving the electronic device and a driving method thereof.

於圖3顯示本發明的指紋顯示裝置具有複數畫素列(pixel row)37，其中，至少一畫素列37具有複數個顯示畫素單元41與複數個指紋畫素單元25，以被驅動來進行顯示及指紋感測。於一實施例中，一畫素列37所具有的顯示畫素單元41的數目是相同於指紋畫素單元25的數目，然而，本發明不以此為限，在其他實施例中，一畫素列37的指紋畫素單元25的數目可以是少於顯示畫素單元25的數目，此外，於面板31的整個顯示區域的畫素列37可以都具有顯示畫素單元41與指紋畫素單元25、或是僅一部份的顯示區域，例如是三分之一的顯示區域的畫素列37具有顯示畫素單元41與指紋畫素單元25，而其餘顯示區域的畫素列37只具有顯示畫素單元41。3 shows that the fingerprint display device of the present invention has a plurality of pixel rows 37, wherein at least one pixel row 37 has a plurality of display pixel units 41 and a plurality of fingerprint pixel units 25 to be driven to Display and fingerprint sensing. In one embodiment, the number of display pixel units 41 in a pixel row 37 is the same as the number of fingerprint pixel units 25 . However, the present invention is not limited to this. The number of fingerprint pixel units 25 in the pixel row 37 may be less than the number of display pixel units 25. In addition, the pixel row 37 in the entire display area of the panel 31 may have both display pixel units 41 and fingerprint pixel units 25. Or only a part of the display area, for example, the pixel row 37 of one third of the display area has the display pixel unit 41 and the fingerprint pixel unit 25, while the pixel row 37 of the remaining display area has only the display pixel unit 41 and the fingerprint pixel unit 25. The pixel unit 41 is displayed.

請一併參照圖4(A)示意地顯示出採用三電晶體(3T)指紋畫素電路的指紋顯示裝置的該至少一畫素列37中的第i畫素列，其中，畫素列37具有顯示畫素單元41與如圖2(D)所示的指紋畫素單元25-1，圖中顯示一畫素列37中的一顯示畫素單元41對應一指紋畫素單元25-1，但此僅為方便說明而非限定。該至少一畫素列37中的第i畫素列的顯示畫素單元41連接到顯示掃描線G-disp(i)，指紋畫素單元25-1連接到顯示掃描線G-disp(i)及重置開關控制走線G-RST與選擇開關控制走線G-SEL，據此，複數畫素列37是以對應的複數條顯示掃描線G-disp所驅動及由重置開關控制走線G-RST與選擇開關控制走線G-SEL所控制以進行顯示及指紋感測。Please also refer to FIG. 4(A), which schematically shows the i-th pixel row in the at least one pixel row 37 of the fingerprint display device using the three-transistor (3T) fingerprint pixel circuit, wherein the pixel row 37 It has a display pixel unit 41 and a fingerprint pixel unit 25-1 as shown in FIG. 2(D), and the figure shows that a display pixel unit 41 in a pixel row 37 corresponds to a fingerprint pixel unit 25-1, However, this is only for convenience of description and not limitation. The display pixel unit 41 of the i-th pixel column in the at least one pixel column 37 is connected to the display scan line G-disp(i), and the fingerprint pixel unit 25-1 is connected to the display scan line G-disp(i) and the reset switch control line G-RST and the selection switch control line G-SEL, according to which, the plurality of pixel columns 37 are driven by the corresponding plurality of display scan lines G-disp and controlled by the reset switch. G-RST and the selection switch control line G-SEL are controlled for display and fingerprint sensing.

圖4(A)所示的該至少一畫素列37中的第i畫素列的指紋畫素單元25-1的電路結構已描述於圖2(D) ，當使用此指紋畫素單元25-1於指紋顯示裝置中，該至少一畫素列37中的第i畫素列的指紋畫素單元25-1的重置電晶體T1的控制端(G)連接至顯示掃描線G-disp(i)；重置開關電晶體SW-RST的控制端(G)連接至重置開關控制走線G-RST；選擇電晶體T3的控制端(G) 連接至顯示掃描線G-disp(i)；選擇開關電晶體SW-SEL的控制端(G)連接至選擇開關控制走線G-SEL。The circuit structure of the fingerprint pixel unit 25-1 of the i-th pixel row in the at least one pixel row 37 shown in FIG. 4(A) has been described in FIG. 2(D) . When this fingerprint pixel unit 25 is used -1 In the fingerprint display device, the control terminal (G) of the reset transistor T1 of the fingerprint pixel unit 25-1 of the i-th pixel row in the at least one pixel row 37 is connected to the display scan line G-disp (i); the control terminal (G) of the reset switch transistor SW-RST is connected to the reset switch control line G-RST; the control terminal (G) of the selection transistor T3 is connected to the display scan line G-disp(i ); the control terminal (G) of the selection switch transistor SW-SEL is connected to the selection switch control line G-SEL.

再請參照圖4(A)，同一行(column)的複數個指紋畫素單元25-1的重置開關電晶體SW-RST的控制端(G)相連至一重置開關控制走線G-RST，同一行(column)的複數個指紋畫素單元25-1的選擇開關電晶體SW-SEL的控制端(G)相連至一選擇開關控制走線G-SEL，同一畫素列37的複數個指紋畫素單元25-1的重置電晶體T1的控制端(G)與選擇電晶體T3的控制端(G)都是接到對應的顯示掃描線G-disp。以上述之電路，當進行顯示/觸控時，由於不需要指紋感測之功能，故整合積體電路39經由重置開關控制走線G-RST與選擇開關控制走線G-SEL將重置開關電晶體SW-RST及選擇開關電晶體SW-SEL斷開，然本發明不以此為限，只要不影響顯示，亦可選擇不斷開重置開關電晶體SW-RST及選擇開關電晶體SW-SEL。而當進行指紋感測時，在對指紋畫素單元25-1的電容C重置之時間，整合積體電路39經由重置開關控制走線G-RST將重置開關電晶體SW-RST導通以致能重置電晶體T1而使顯示掃描線G-disp打開重置電晶體T1來重置電容C的準位，而因為還沒有要讀出指紋資料，故整合積體電路39可經由選擇開關控制走線G-SEL將選擇開關電晶體SW-SEL斷開，以禁能選擇電晶體T3，但本發明不以此為限，只要不影響指紋感測，亦可選擇不斷開選擇開關電晶體SW-SEL；在重置完成後，整合積體電路39經由重置開關控制走線G-RST將重置開關電晶體SW-RST斷開以禁能重置電晶體T1；於光學感應元件PS曝光以進行指紋訊號讀取時，整合積體電路39經由選擇開關控制走線G-SEL將選擇開關電晶體SW-SEL導通，以致能選擇電晶體T3而使顯示掃描線G-disp打開選擇電晶體T3來讀取指紋訊號至讀出端RO’，據此，以上述之方式操作重置開關電晶體SW-RST及選擇開關電晶體SW-SEL，即可達到用顯示掃描線G-disp取代重置線RST與選擇線SEL之效果，因而大幅提高面板穿透率。另外，在本實施例中，也可以選擇性地不使用選擇開關電晶體SW-SEL，亦即，選擇電晶體T3的第二連接端(S)連接至讀出線，以此電路結構亦可實現以顯示掃描線G-disp取代重置線RST與選擇線SEL之效果。Referring to FIG. 4(A) again, the control terminals (G) of the reset switch transistors SW-RST of a plurality of fingerprint pixel units 25-1 in the same row (column) are connected to a reset switch control line G- RST, the control terminals (G) of the selection switch transistors SW-SEL of the plurality of fingerprint pixel units 25-1 in the same row (column) are connected to a selection switch control line G-SEL, the plurality of the same pixel column 37 Both the control terminal (G) of the reset transistor T1 and the control terminal (G) of the selection transistor T3 of each fingerprint pixel unit 25-1 are connected to the corresponding display scan line G-disp. With the above circuit, when the display/touch is performed, since the function of fingerprint sensing is not required, the integrated IC 39 will be reset via the reset switch control line G-RST and the selection switch control line G-SEL The switching transistor SW-RST and the selection switching transistor SW-SEL are disconnected, but the present invention is not limited to this, as long as the display is not affected, the reset switching transistor SW-RST and the selection switching transistor SW can also be selected not to be disconnected -SEL. During fingerprint sensing, when the capacitor C of the fingerprint pixel unit 25-1 is reset, the integrated circuit 39 turns on the reset switch transistor SW-RST via the reset switch control line G-RST So that the transistor T1 can be reset and the display scan line G-disp turns on the reset transistor T1 to reset the level of the capacitor C, and since the fingerprint data has not yet been read, the integrated circuit 39 can be selected through the selection switch. The control line G-SEL disconnects the selection switch transistor SW-SEL to disable the selection switch transistor T3, but the present invention is not limited to this, as long as the fingerprint sensing is not affected, the selection switch transistor can also be selected not to be disconnected SW-SEL; after the reset is completed, the integrated circuit 39 turns off the reset switch transistor SW-RST via the reset switch control line G-RST to disable the reset transistor T1; in the optical sensing element PS When exposing to read the fingerprint signal, the integrated integrated circuit 39 turns on the selection switch transistor SW-SEL via the selection switch control line G-SEL, so that the selection transistor T3 can be selected and the display scan line G-disp is turned on to select the transistor. The crystal T3 is used to read the fingerprint signal to the readout terminal RO'. Accordingly, the reset switch transistor SW-RST and the selection switch transistor SW-SEL are operated in the above-mentioned manner, so as to replace the display scan line G-disp with the display scan line G-disp. The effect of the reset line RST and the select line SEL greatly improves the panel transmittance. In addition, in this embodiment, the selection switch transistor SW-SEL can also be selectively not used, that is, the second connection terminal (S) of the selection transistor T3 is connected to the readout line, and this circuit structure can also be used. Realize the effect of replacing the reset line RST and the selection line SEL with the display scan line G-disp.

圖4(B)示意地顯示出採用二電晶體(2T)指紋畫素電路的指紋顯示裝置的至少一畫素列37中的第i畫素列，其中，畫素列37具有顯示畫素單元41與如圖2(F)所示的指紋畫素單元25-2，圖中顯示一畫素列37中的一顯示畫素單元41對應一指紋畫素單元25-2，但此僅為方便說明而非限定。該至少一畫素列37中的第i畫素列的顯示畫素單元41連接到顯示掃描線G-disp(i)，指紋畫素單元25-2連接到顯示掃描線G-disp(i)、與顯示掃描線G-disp(i)相鄰的顯示掃描線G-disp(i+1)或G-disp(i-1)、及重置開關控制走線G-RST與選擇開關控制走線G-SEL，其中，於圖4(B)中，與顯示掃描線G-disp(i)相鄰的顯示掃描線是以G-disp(i+1)為例來展現，但此僅是方便說明而非用以限制。據此，複數畫素列37是以對應的複數條顯示掃描線G-disp所驅動及由重置開關控制走線G-RST與選擇開關控制走線G-SEL所控制以進行顯示及指紋感測。4(B) schematically shows the i-th pixel row in at least one pixel row 37 of a fingerprint display device using a two-transistor (2T) fingerprint pixel circuit, wherein the pixel row 37 has a display pixel unit 41 and the fingerprint pixel unit 25-2 shown in FIG. 2(F), a display pixel unit 41 in a pixel row 37 is shown in the figure corresponding to a fingerprint pixel unit 25-2, but this is only for convenience Description but not limitation. The display pixel unit 41 of the i-th pixel column in the at least one pixel column 37 is connected to the display scan line G-disp(i), and the fingerprint pixel unit 25-2 is connected to the display scan line G-disp(i) , the display scan line G-disp(i+1) or G-disp(i-1) adjacent to the display scan line G-disp(i), and the reset switch control line G-RST and the selection switch control line Line G-SEL, wherein, in FIG. 4(B), the display scan line adjacent to the display scan line G-disp(i) is shown as G-disp(i+1) as an example, but this is only For convenience and not for limitation. Accordingly, the plurality of pixel columns 37 are driven by the corresponding plurality of display scan lines G-disp and controlled by the reset switch control line G-RST and the selection switch control line G-SEL for display and fingerprint sensing. Measurement.

圖4(B)所示的該至少一畫素列37中的第i畫素列的指紋畫素單元25-2的電路結構已描述於圖2(F) ，當使用此指紋畫素單元25-2於指紋顯示裝置中，該至少一畫素列37中的第i畫素列的指紋畫素單元25-2的光學感應元件PS的第二端e2連接至該相鄰的掃描線G-disp(i+1)；重置電晶體T1的控制端(G)連接至顯示掃描線G-disp(i)；重置開關電晶體SW-RST的控制端(G)連接至重置開關控制走線G-RST；選擇開關電晶體SW-SEL的控制端(G)連接至選擇開關控制走線G-SEL。The circuit structure of the fingerprint pixel unit 25-2 of the i-th pixel row in the at least one pixel row 37 shown in FIG. 4(B) has been described in FIG. 2(F). -2 In the fingerprint display device, the second end e2 of the optical sensing element PS of the fingerprint pixel unit 25-2 of the i-th pixel row in the at least one pixel row 37 is connected to the adjacent scan line G- disp(i+1); the control terminal (G) of the reset transistor T1 is connected to the display scan line G-disp(i); the control terminal (G) of the reset switch transistor SW-RST is connected to the reset switch control Wire G-RST; the control terminal (G) of the selection switch transistor SW-SEL is connected to the selection switch control wire G-SEL.

再請參照圖4(B)，同一行(column)的複數個指紋畫素單元25-2的重置開關電晶體SW-RST的控制端(G)相連至一重置開關控制走線G-RST，同一行(column)的複數個指紋畫素單元25-2的選擇開關電晶體SW-SEL的控制端(G)相連至一選擇開關控制走線G-SEL，同一畫素列37的複數個指紋畫素單元25-2的重置電晶體T1的控制端(G)連接到對應的顯示掃描線G-disp，同一畫素列37的複數個指紋畫素單元25-2的光學感應元件PS的第二端e2連接到相鄰的顯示掃描線G-disp。以上述之電路，當進行顯示/觸控時，由於不需要指紋感測之功能，故整合積體電路39經由重置開關控制走線G-RST與選擇開關控制走線G-SEL將重置開關電晶體SW-RST及選擇開關電晶體SW-SEL斷開，然本發明不以此為限，只要不影響顯示，亦可選擇不斷開重置開關電晶體SW-RST及選擇開關電晶體SW-SEL。而當進行指紋感測時，在對指紋畫素單元25-2的電容C重置之時間，整合積體電路39經由重置開關控制走線G-RST將重置開關電晶體SW-RST導通以致能重置電晶體T1而使顯示掃描線G-disp打開重置電晶體T1來重置電容C的準位，而因為還沒有要讀出指紋資料，故整合積體電路39可經由選擇開關控制走線G-SEL將選擇開關電晶體SW-SEL斷開，以禁能驅動電晶體T2，但本發明不以此為限，只要不影響指紋感測，亦可選擇不斷開第二開關電晶體SW2；在重置完成後，整合積體電路39經由重置開關控制走線G-RST將重置開關電晶體SW-RST斷開以禁能重置電晶體T1；於光學感應元件PS曝光以進行指紋訊號讀取時，整合積體電路39經由選擇開關控制走線G-SEL將選擇開關電晶體SW-SEL導通，以致能驅動電晶體T2，且以相鄰的顯示掃描線G-disp驅動打開光學感應元件PS以提高光學感應元件PS的第二端e2的電壓準位，進而打開驅動電晶體T2，來讀取指紋訊號至讀出端RO’，據此，以上述之方式操作重置開關電晶體SW-RST及選擇開關電晶體SW-SEL，即可達到用顯示掃描線G-disp取代重置線RST與選擇線SEL之效果，因而大幅提高面板穿透率。另外，在本實施例中，也可以選擇性地不使用選擇開關電晶體SW-SEL，亦即，驅動電晶體T2的第一連接端(S)連接至第四電壓SVDD，以此電路結構亦可實現以顯示掃描線G-disp取代重置線RST與選擇線SEL之效果。Referring to FIG. 4(B) again, the control terminals (G) of the reset switch transistors SW-RST of the plurality of fingerprint pixel units 25-2 in the same row are connected to a reset switch control line G- RST, the control terminals (G) of the selection switch transistors SW-SEL of the plurality of fingerprint pixel units 25-2 in the same row are connected to a selection switch control line G-SEL, and the plurality of the same pixel row 37 The control terminals (G) of the reset transistors T1 of each fingerprint pixel unit 25-2 are connected to the corresponding display scan line G-disp, and the optical sensing elements of the plurality of fingerprint pixel units 25-2 in the same pixel row 37 The second end e2 of the PS is connected to the adjacent display scan line G-disp. With the above circuit, when the display/touch is performed, since the function of fingerprint sensing is not required, the integrated IC 39 will be reset via the reset switch control line G-RST and the selection switch control line G-SEL The switching transistor SW-RST and the selection switching transistor SW-SEL are disconnected, but the present invention is not limited to this, as long as the display is not affected, the reset switching transistor SW-RST and the selection switching transistor SW can also be selected not to be disconnected -SEL. During fingerprint sensing, when the capacitor C of the fingerprint pixel unit 25-2 is reset, the integrated circuit 39 turns on the reset switch transistor SW-RST via the reset switch control line G-RST So that the transistor T1 can be reset and the display scan line G-disp turns on the reset transistor T1 to reset the level of the capacitor C, and since the fingerprint data has not yet been read, the integrated circuit 39 can be selected through the selection switch. The control line G-SEL disconnects the selection switch transistor SW-SEL to disable the drive transistor T2, but the present invention is not limited to this, as long as the fingerprint sensing is not affected, the second switch transistor can also be selected not to be disconnected. crystal SW2; after the reset is completed, the integrated circuit 39 turns off the reset switch transistor SW-RST via the reset switch control line G-RST to disable the reset transistor T1; exposes the optical sensing element PS In order to read the fingerprint signal, the integrated integrated circuit 39 turns on the selection switch transistor SW-SEL via the selection switch control line G-SEL, so that the transistor T2 can be driven, and the adjacent display scan line G-disp is used. The optical sensing element PS is driven to open to increase the voltage level of the second end e2 of the optical sensing element PS, and then the driving transistor T2 is turned on to read the fingerprint signal to the readout terminal RO'. By placing the switching transistor SW-RST and the selection switching transistor SW-SEL, the display scan line G-disp can replace the reset line RST and the selection line SEL, thereby greatly improving the panel transmittance. In addition, in this embodiment, the selection switch transistor SW-SEL can also be selectively not used, that is, the first connection terminal (S) of the driving transistor T2 is connected to the fourth voltage SVDD, and the circuit structure is also The effect of replacing the reset line RST and the selection line SEL with the display scan line G-disp can be realized.

圖5(A)及5(B)分別顯示本發明圖4(A) 及4(B)的指紋畫素單元25整合到顯示畫素單元41的示意圖，如圖5(A)及5(B)所示，其顯示出包含LCD的RGB三個子畫素的顯示畫素單元41整合一指紋畫素單元25，其中，指紋畫素單元25的電路區域配置於RGB三個子畫素的下面區域，但此僅是舉例而非限制，可想而知地，指紋畫素單元25的電路區域亦可集中配置於一特定子畫素的下面區域。此外，本實施例是以LCD面板為例，但本發明不以此為限，對於例如OLED等其它類型的面板，或是例如RGBW等其他種畫素排列，本發明亦可適用。5(A) and 5(B) are schematic diagrams showing the integration of the fingerprint pixel unit 25 of FIGS. 4(A) and 4(B) into the display pixel unit 41 of the present invention, respectively, as shown in FIGS. 5(A) and 5(B) ), it shows that the display pixel unit 41 including the three sub-pixels of RGB of the LCD integrates a fingerprint pixel unit 25, wherein the circuit area of the fingerprint pixel unit 25 is arranged in the lower area of the three sub-pixels of RGB, However, this is only an example and not a limitation. It is conceivable that the circuit area of the fingerprint pixel unit 25 can also be concentrated in the lower area of a specific sub-pixel. In addition, the present embodiment takes an LCD panel as an example, but the present invention is not limited thereto. The present invention is also applicable to other types of panels such as OLED, or other pixel arrangements such as RGBW.

在圖5(A)及5(B)之實施例中，是以LTPS LCD 製程為例，顯示掃描線G-disp可用金屬層1(metal-1，M1)製作。連接RGB三個子畫素的資料線61可用金屬層2(metal-2，M2)製作，在圖5(A) 及5(B)中標示為R(M2)、G(M2)與B(M2)，此等資料線61的功用在傳送顯示資料到每個顯示子畫素。重置開關控制走線G-RST與選擇開關控制走線G-SEL可以用其他金屬層，例如金屬層0(metal-0，M0)或金屬層3(metal-3，M3)製作，設置為與資料線61重疊，因此不會因為導入重置開關控制走線G-RST與選擇開關控制走線G-SEL而影響開口率。In the embodiments of FIGS. 5(A) and 5(B), the LTPS LCD process is taken as an example, and the display scan line G-disp can be made of metal layer 1 (metal-1, M1). The data lines 61 connecting the three sub-pixels of RGB can be made of metal layer 2 (metal-2, M2), which are marked as R(M2), G(M2) and B(M2 in FIGS. 5(A) and 5(B) . ), the function of these data lines 61 is to transmit display data to each display sub-pixel. The reset switch control trace G-RST and the selection switch control trace G-SEL can be made of other metal layers, such as metal layer 0 (metal-0, M0) or metal layer 3 (metal-3, M3), set as It overlaps with the data line 61, so the aperture ratio will not be affected by the introduction of the reset switch control line G-RST and the selection switch control line G-SEL.

圖6為本發明的指紋顯示裝置中的開關電晶體(重置開關電晶體SW-RST/選擇開關電晶體SW-SEL)與重置電晶體T1/驅動電晶體T2/選擇電晶體T3之間以混合串聯閘極(hybrid tandem gate)構成的串接結構，以此方式，可以兼容原本的指紋畫素單元的製程且同時達到較佳的開口率。其中，開關電晶體直接用金屬層0(M0)當底閘極(bottom gate)，藉由施加電壓在底閘極以控制開關電晶體的導通狀態，上層的金屬層1(M1)則是 浮接(floating)，其可用來定義植入(implantation)的範圍。而重置電晶體T1/驅動電晶體T2/選擇電晶體T3則是採用原本的頂閘極(top gate)結構，以金屬層0(M0)在下層當多晶矽(poly-Si)的遮光層，金屬層1(M1)在上層作為電晶體實際的閘極，藉由施加電壓在頂閘極以控制電晶體的導通狀態。此外，在其它實施例中，連接重置開關電晶體SW-RST/選擇開關電晶體SW-SEL的重置開關控制走線G-RST/選擇開關控制走線G-SEL可先跳線到金屬層1(M1)，且開關電晶體採用頂閘極(top gate)結構。FIG. 6 is a diagram between a switch transistor (reset switch transistor SW-RST/selection switch transistor SW-SEL) and a reset transistor T1/drive transistor T2/selection transistor T3 in the fingerprint display device of the present invention The tandem structure formed by the hybrid tandem gate can be compatible with the process of the original fingerprint pixel unit and at the same time achieve a better aperture ratio. Among them, the switching transistor directly uses the metal layer 0 (M0) as the bottom gate, and the conduction state of the switching transistor is controlled by applying a voltage to the bottom gate, and the upper metal layer 1 (M1) is floating. floating, which can be used to define the scope of implantation. The reset transistor T1/drive transistor T2/select transistor T3 adopts the original top gate structure, and the metal layer 0 (M0) is used as the light shielding layer of polysilicon (poly-Si) in the lower layer. The upper layer of the metal layer 1 (M1) serves as the actual gate of the transistor, and the conduction state of the transistor is controlled by applying a voltage to the top gate. In addition, in other embodiments, the reset switch control trace G-RST/select switch control trace G-SEL connected to the reset switch transistor SW-RST/select switch transistor SW-SEL can be jumpered to the metal first. Layer 1 (M1), and the switching transistor adopts a top gate structure.

圖7顯示重置開關控制走線G-RST與選擇開關控制走線G-SEL在面板31的顯示區71與其外圍的電路示意圖，其中，重置開關控制走線G-RST經由第一開關SW1接到重置電壓V-RST，選擇開關控制走線G-SEL經由第二開關SW2接到選擇電壓V-SEL。為了控制方便，可將各個第一開關SW1接到同一重置開關控制訊號V-SW-RST，及將各個第二開關SW2接到同一選擇開關控制訊號V-SW-SEL，其中，重置開關控制訊號V-SW-RST及選擇開關控制訊號V-SW-SEL、重置電壓V-RST及選擇電壓V-SEL是由圖3中的整合積體電路39所提供。7 shows a schematic circuit diagram of the reset switch control line G-RST and the selection switch control line G-SEL in the display area 71 of the panel 31 and its periphery, wherein the reset switch control line G-RST passes through the first switch SW1 Connected to the reset voltage V-RST, the selection switch control line G-SEL is connected to the selection voltage V-SEL via the second switch SW2. For convenience of control, each first switch SW1 can be connected to the same reset switch control signal V-SW-RST, and each second switch SW2 can be connected to the same selection switch control signal V-SW-SEL, wherein the reset switch The control signal V-SW-RST and the selection switch control signal V-SW-SEL, the reset voltage V-RST and the selection voltage V-SEL are provided by the integrated integrated circuit 39 in FIG. 3 .

圖8為本發明的指紋顯示裝置的一運作時序圖，本實施例的指紋顯示裝置包含了顯示、觸控與指紋的功能。於圖8中，DISP代表顯示，TP代表觸控，FP代表指紋感測，Vb代表垂直消隱(Vertical blanking)期間，T0代表一時間間隔，T0的大小取決於所需要的曝光時間。如圖所示，在指紋感測重置(FP-RST)時間，將第一開關SW1打開，重置電壓V-RST的高電位將重置開關電晶體SW-RST導通，搭配顯示掃描線G-disp的依序開啟，可將被選取到的光學感應元件PS的電位重置。在指紋感測選擇(FP-SEL)時間，將第二開關SW2打開，選擇電壓V-SEL的高電位將選擇開關電晶體SW-SEL打開，搭配顯示掃描線G-disp的依序開啟，而可將被選取到的光學感應元件PS的訊號讀出。在顯示期間，則是將第一開關SW1與第二開關SW2關閉，因此，重置開關控制走線G-RST與選擇開關控制走線G-SEL保持浮接，可降低對資料線61的電容負載。可選擇地，在本實施例中，於垂直消隱期間Vb將第一開關SW1與第二開關SW2打開，以將重置開關控制走線G-RST與選擇開關控制走線G-SEL重置到一準位，此外，於圖8中，當不進行指紋感測時，重置電壓V-RST 與選擇電壓V-SEL是維持為低準位，因此可減小電晶體的閘極與源極/汲極的跨壓，進而降低對第一開關SW1與第二開關SW2的應力，但本發明不以此為限，若電晶體元件的可靠度佳，亦可選擇將第一開關SW1與第二開關SW2固定維持在高電位不做切換。此外，若指紋顯示裝置的資料線與重置開關控制走線G-RST/選擇開關控制走線G-SEL的RC負載為可接受，亦可無須設置第一開關SW1與第二開關SW2。FIG. 8 is an operation timing diagram of the fingerprint display device of the present invention. The fingerprint display device of this embodiment includes the functions of display, touch and fingerprint. In FIG. 8, DISP represents display, TP represents touch, FP represents fingerprint sensing, Vb represents vertical blanking period, T0 represents a time interval, and the size of T0 depends on the required exposure time. As shown in the figure, during the fingerprint sensing reset (FP-RST) time, the first switch SW1 is turned on, and the high potential of the reset voltage V-RST turns on the reset switch transistor SW-RST, which is matched with the display scan line G -The sequential turn on of disp can reset the potential of the selected optical sensing element PS. During the fingerprint sensing selection (FP-SEL) time, the second switch SW2 is turned on, the high potential of the selection voltage V-SEL turns on the selection switch transistor SW-SEL, and the display scanning line G-disp is turned on in sequence, and The signal of the selected optical sensing element PS can be read out. During the display period, the first switch SW1 and the second switch SW2 are turned off. Therefore, the reset switch control line G-RST and the selection switch control line G-SEL are kept floating, which can reduce the capacitance to the data line 61 load. Optionally, in this embodiment, the first switch SW1 and the second switch SW2 are turned on during the vertical blanking period Vb to reset the reset switch control line G-RST and the selection switch control line G-SEL In addition, in FIG. 8, when the fingerprint sensing is not performed, the reset voltage V-RST and the selection voltage V-SEL are maintained at a low level, so the gate and source of the transistor can be reduced. The cross-voltage between the pole/drain pole, thereby reducing the stress on the first switch SW1 and the second switch SW2, but the invention is not limited to this, if the reliability of the transistor element is good, the first switch SW1 and the second switch SW2 can also be selected The second switch SW2 is kept at a high potential and does not switch. In addition, if the RC load of the data line and the reset switch control line G-RST/selection switch control line G-SEL of the fingerprint display device is acceptable, the first switch SW1 and the second switch SW2 may not be provided.

圖9為本發明的指紋顯示裝置的另一運作時序圖，本實施例的指紋顯示裝置包含了顯示、觸控與指紋的功能。於圖9中，DISP代表顯示，TP代表觸控，FP代表指紋感測，Vb代表垂直消隱(Vertical blanking)期間。如圖所示，在本實施例中，指紋重置 (重置電壓V-RST為高電位) 的時間共用顯示資料寫入時間，因此可減短偵測出指紋的時間。且當選擇開關電晶體SW-SEL打開兩次，重置開關電晶體SW-RST才打開一次，因此可有取得兩種曝光時間的指紋資料，以方便指紋辨識的處理。FIG. 9 is another operation timing diagram of the fingerprint display device of the present invention. The fingerprint display device of this embodiment includes the functions of display, touch and fingerprint. In FIG. 9 , DISP represents display, TP represents touch, FP represents fingerprint sensing, and Vb represents vertical blanking period. As shown in the figure, in this embodiment, the time for fingerprint reset (the reset voltage V-RST is high) is shared with the display data writing time, so the time for detecting the fingerprint can be shortened. And when the selection switch transistor SW-SEL is turned on twice, the reset switch transistor SW-RST is turned on only once, so fingerprint data of two exposure times can be obtained to facilitate the processing of fingerprint identification.

此外，本發明亦可藉由只導入重置開關電晶體SW-RST來做重置線與選擇線功能之間的切換，可將重置線與選擇線整合成一條指紋複用線，因此可有效改善面板開口率。圖10顯示本發明的指紋顯示裝置的另一實施例的系統架構圖，其中，在一面板31的左右側設有顯示驅動的GOA電路33，用來根據一整合積體電路39的控制來依序驅動顯示掃描線G-disp以進行顯示。此外，為了實現指紋偵測功能，在面板31的左右側設有指紋感測驅動的GOA電路35，且整合積體電路39在面板31的底側經由重置開關控制走線G-RST來控制重置開關電晶體SW-RST，據以根據該整合積體電路39的控制信號來依序驅動指紋複用線FP-comb以進行指紋感測，且感測的指紋資料是由讀出線RO讀取至該整合積體電路39以進行指紋辨識，特定地，於實際的電路中，讀出線RO在延伸出面板31後，可經由一多工器與資料線複用同一線而進入該整合積體電路39，以節省整合積體電路39的接腳數目。於本發明中，面板31可為任何類型之平面顯示面板，例如LCD面板或OLED面板等。雖於本實施例顯示出顯示驅動的GOA電路33及指紋感測驅動的GOA電路35皆是設置於面板31的左右兩側，但本發明不以此為限，於其他實施例中，顯示驅動的GOA電路33及指紋感測驅動的GOA電路35亦可皆設置於面板31的相同的一側，或是顯示驅動的GOA電路33設置於面板31的一側，而指紋感測驅動的GOA電路35設置於面板31的相對另一側。此外，本發明的指紋顯示裝置的面板31亦可提供觸控感應功能，例如藉由切割面板31的公共電極來作為觸控感應器(圖未示)，觸控感應器感應使用者手指之觸摸而將觸控訊號傳送至整合積體電路39以進行觸摸偵測而實現觸控感應功能，其中，切割公共電極作為觸控感應器為本領域技術人士所知，故在此不在贅述。也就是說，在一實施例中，本發明可以是提供具備指紋感測、觸控感應及顯示等三合一功能的電子裝置及可用來驅動此電子裝置的積體電路及其驅動方法。In addition, the present invention can also switch between the functions of the reset line and the select line by only introducing the reset switch transistor SW-RST, and can integrate the reset line and the select line into a fingerprint multiplexing line, so it can be Effectively improve the panel aperture ratio. FIG. 10 shows a system structure diagram of another embodiment of the fingerprint display device of the present invention, wherein GOA circuits 33 for display driving are provided on the left and right sides of a panel 31 , which are used to control the display according to the control of an integrated integrated circuit 39 . The display scan lines G-disp are sequentially driven for display. In addition, in order to realize the fingerprint detection function, GOA circuits 35 for fingerprint sensing and driving are provided on the left and right sides of the panel 31 , and the integrated integrated circuit 39 is controlled by the reset switch control line G-RST on the bottom side of the panel 31 . The reset switch transistor SW-RST is used to sequentially drive the fingerprint multiplexing line FP-comb according to the control signal of the integrated integrated circuit 39 to perform fingerprint sensing, and the sensed fingerprint data is obtained from the readout line RO Read to the integrated integrated circuit 39 for fingerprint identification. Specifically, in an actual circuit, after the readout line RO extends out of the panel 31, it can enter the same line through a multiplexer and the data line. The integrated circuit 39 is integrated to save the number of pins of the integrated integrated circuit 39 . In the present invention, the panel 31 can be any type of flat display panel, such as an LCD panel or an OLED panel. Although the present embodiment shows that the GOA circuit 33 for display driving and the GOA circuit 35 for fingerprint sensing driving are both disposed on the left and right sides of the panel 31, the present invention is not limited to this. In other embodiments, the display driving The GOA circuit 33 and the fingerprint sensing driving GOA circuit 35 can also be arranged on the same side of the panel 31, or the display driving GOA circuit 33 can be arranged on one side of the panel 31, and the fingerprint sensing driving GOA circuit 35 is provided on the opposite side of the panel 31 . In addition, the panel 31 of the fingerprint display device of the present invention can also provide a touch sensing function, for example, by cutting the common electrode of the panel 31 as a touch sensor (not shown), the touch sensor senses the touch of the user's finger The touch signal is transmitted to the integrated integrated circuit 39 for touch detection to realize the touch sensing function. The cutting of the common electrode as a touch sensor is known to those skilled in the art, so it is not repeated here. That is to say, in one embodiment, the present invention can provide an electronic device with three-in-one functions of fingerprint sensing, touch sensing and display, and an integrated circuit for driving the electronic device and a driving method thereof.

於圖10顯示本發明的指紋顯示裝置具有複數畫素列(row)37，其中，至少一畫素列37具有複數個顯示畫素單元41與複數個指紋畫素單元23，以被驅動來進行顯示及指紋感測。於一實施例中，一畫素列37所具有的顯示畫素單元41的數目是相同於指紋畫素單元23的數目，然而，本發明不以此為限，在其他實施例中，一畫素列37的指紋畫素單元23的數目可以是少於顯示畫素單元41的數目，此外，於面板31的整個顯示區域的畫素列37可以都具有顯示畫素單元41與指紋畫素單元23、或是僅一部份的顯示區域，例如是三分之一的顯示區域的畫素列37具有顯示畫素單元41與指紋畫素單元23，而其餘顯示區域的畫素列37只具有顯示畫素單元41。10 shows that the fingerprint display device of the present invention has a plurality of pixel rows (rows) 37, wherein at least one pixel row 37 has a plurality of display pixel units 41 and a plurality of fingerprint pixel units 23 to be driven to perform. Display and fingerprint sensing. In one embodiment, the number of display pixel units 41 in a pixel row 37 is the same as the number of fingerprint pixel units 23 . However, the present invention is not limited to this. The number of fingerprint pixel units 23 in the pixel row 37 may be less than the number of display pixel units 41. In addition, the pixel row 37 in the entire display area of the panel 31 may have both display pixel units 41 and fingerprint pixel units 23. Or only a part of the display area, for example, the pixel row 37 of one third of the display area has the display pixel unit 41 and the fingerprint pixel unit 23, while the pixel row 37 of the remaining display area has only the display pixel unit 41 and the fingerprint pixel unit 23. The pixel unit 41 is displayed.

請一併參照圖11(A)示意地顯示出採用三電晶體(3T)指紋畫素電路的指紋顯示裝置的該至少一畫素列37中的第i畫素列，其中，畫素列37具有顯示畫素單元41與如圖2(C)所示的指紋畫素單元23-1，圖中顯示一畫素列37中的一顯示畫素單元41對應一指紋畫素單元23-1，但此僅為方便說明而非限定。該至少一畫素列37中的第i畫素列的顯示畫素單元41連接到顯示掃描線G-disp(i)，指紋畫素單元23-1連接到指紋複用線FP-comb(i)，據此，複數畫素列37是以對應的複數條顯示掃描線G-disp及複數條指紋複用線FP-comb所驅動及由重置開關控制走線G-RST所控制以進行顯示及指紋感測。Please also refer to FIG. 11(A), which schematically shows the i-th pixel row in the at least one pixel row 37 of the fingerprint display device using the three-transistor (3T) fingerprint pixel circuit, wherein the pixel row 37 It has a display pixel unit 41 and a fingerprint pixel unit 23-1 as shown in FIG. 2(C) . The figure shows that a display pixel unit 41 in a pixel row 37 corresponds to a fingerprint pixel unit 23-1, However, this is only for convenience of description and not limitation. The display pixel unit 41 of the i-th pixel column in the at least one pixel column 37 is connected to the display scan line G-disp(i), and the fingerprint pixel unit 23-1 is connected to the fingerprint multiplexing line FP-comb(i) ), according to this, the plurality of pixel columns 37 are driven by the corresponding plurality of display scanning lines G-disp and the plurality of fingerprint multiplexing lines FP-comb and controlled by the reset switch control line G-RST to display and fingerprint sensing.

圖11(A)所示的該至少一畫素列37中的第i畫素列的指紋畫素單元23-1的電路結構已描述於圖2(C) ，當使用此指紋畫素單元23-1於指紋顯示裝置中，該至少一畫素列37中的第i畫素列的指紋畫素單元23-1的重置電晶體T1的控制端(G)連接至指紋複用線FP-comb(i)；重置開關電晶體SW-RST的控制端(G)連接至重置開關控制走線G-RST；選擇電晶體T3的控制端(G)連接至指紋複用線FP-comb(i)。The circuit structure of the fingerprint pixel unit 23-1 of the i-th pixel row in the at least one pixel row 37 shown in FIG. 11(A) has been described in FIG. 2(C), when the fingerprint pixel unit 23 is used -1 In the fingerprint display device, the control terminal (G) of the reset transistor T1 of the fingerprint pixel unit 23-1 of the i-th pixel row in the at least one pixel row 37 is connected to the fingerprint multiplexing line FP- comb(i); the control terminal (G) of the reset switch transistor SW-RST is connected to the reset switch control trace G-RST; the control terminal (G) of the selection transistor T3 is connected to the fingerprint multiplexing line FP-comb (i).

再請參照圖11(A)，同一行(column)的複數個指紋畫素單元23-1的重置開關電晶體SW-RST的控制端(G)相連至一重置開關控制走線G-RST，同一畫素列37的複數個指紋畫素單元23-1的重置電晶體T1的控制端(G)與選擇電晶體T3的控制端(G)都是接到對應的指紋複用線FP-comb。以上述之電路，當進行顯示/觸控時，由於不需要指紋感測之功能，故整合積體電路39經由重置開關控制走線G-RST將重置開關電晶體SW-RST斷開，然本發明不以此為限，只要不影響顯示，亦可選擇不斷開重置開關電晶體SW-RST。而當進行指紋感測時，在對指紋畫素單元23-1的電容C重置之時間，整合積體電路39經由重置開關控制走線G-RST將重置開關電晶體SW-RST導通以致能重置電晶體T1而使指紋複用線FP-comb打開重置電晶體T1來重置電容C的準位；在重置完成後，整合積體電路39經由重置開關控制走線G-RST將重置開關電晶體SW-RST斷開以禁能重置電晶體T1；於光學感應元件PS曝光以進行指紋訊號讀取時，整合積體電路39驅動指紋複用線FP-comb以打開選擇電晶體T3來讀取指紋訊號至讀出端RO’，據此，以上述之方式操作重置開關電晶體SW-RST及驅動指紋複用線FP-comb，即可達到使用指紋複用線FP-comb取代重置線RST與選擇線SEL之效果，因而提高面板穿透率。Referring to FIG. 11(A) again, the control terminals (G) of the reset switch transistors SW-RST of a plurality of fingerprint pixel units 23-1 in the same row are connected to a reset switch control line G- RST, the control terminal (G) of the reset transistor T1 and the control terminal (G) of the selection transistor T3 of the plurality of fingerprint pixel units 23-1 in the same pixel row 37 are both connected to the corresponding fingerprint multiplexing lines FP-comb. With the above circuit, when the display/touch is performed, since the function of fingerprint sensing is not required, the integrated IC 39 disconnects the reset switch transistor SW-RST via the reset switch control line G-RST. However, the present invention is not limited to this, as long as the display is not affected, the reset switching transistor SW-RST can also be selected not to be turned on. During fingerprint sensing, when the capacitor C of the fingerprint pixel unit 23-1 is reset, the integrated circuit 39 turns on the reset switch transistor SW-RST via the reset switch control line G-RST So that the transistor T1 can be reset and the fingerprint multiplexing line FP-comb turns on the reset transistor T1 to reset the level of the capacitor C; after the reset is completed, the integrated circuit 39 controls the line G through the reset switch -RST disconnects the reset switch transistor SW-RST to disable the reset transistor T1; when the optical sensing element PS is exposed to read the fingerprint signal, the integrated integrated circuit 39 drives the fingerprint multiplexing line FP-comb to Turn on the selection transistor T3 to read the fingerprint signal to the readout terminal RO', accordingly, operate the reset switch transistor SW-RST and drive the fingerprint multiplexing line FP-comb in the above-mentioned manner, so as to achieve the use of fingerprint multiplexing The line FP-comb replaces the effect of the reset line RST and the select line SEL, thereby improving the panel transmittance.

此外，於指紋畫素單元23-1整合到顯示畫素單元41時，指紋複用線FP-comb可用金屬層1(metal-1，M1)製作，且重置開關控制走線G-RST是以用其他導電層,例如金屬層0(metal-0，M0)或金屬層3(metal-3，M3)製作，並設置為與資料線重疊，因此不會因為導入重置開關控制走線G-RST而影響開口率。In addition, when the fingerprint pixel unit 23-1 is integrated into the display pixel unit 41, the fingerprint multiplexing line FP-comb can be made of metal layer 1 (metal-1, M1), and the reset switch control line G-RST is It can be made with other conductive layers, such as metal layer 0 (metal-0, M0) or metal layer 3 (metal-3, M3), and set to overlap with the data line, so it will not be controlled by the introduction of the reset switch. -RST affects the aperture ratio.

圖11(B)示意地顯示出採用二電晶體(2T)指紋畫素電路的指紋顯示裝置的該至少一畫素列37中的第i畫素列，其中，畫素列37具有顯示畫素單元41與如圖2(E)所示的指紋畫素單元23-2，圖中顯示一畫素列37中的一顯示畫素單元41對應一指紋畫素單元23-2，但此僅為方便說明而非限定。該至少一畫素列37中的第i畫素列的顯示畫素單元41連接到顯示掃描線G-disp(i)，指紋畫素單元23-2連接到指紋複用線FP-comb(i)、指紋複用線FP-comb(i-1)、及重置開關控制走線G-RST。據此，複數畫素列37是以對應的複數條顯示掃描線G-disp及複數條指紋複用線FP-comb(i)所驅動及由重置開關控制走線G-RST所控制以進行顯示及指紋感測。11(B) schematically shows the i-th pixel row in the at least one pixel row 37 of a fingerprint display device using a two-transistor (2T) fingerprint pixel circuit, wherein the pixel row 37 has display pixels The unit 41 is the same as the fingerprint pixel unit 23-2 as shown in FIG. 2(E) . The figure shows that a display pixel unit 41 in a pixel row 37 corresponds to a fingerprint pixel unit 23-2, but this is only For convenience and not limitation. The display pixel unit 41 of the i-th pixel column in the at least one pixel column 37 is connected to the display scan line G-disp(i), and the fingerprint pixel unit 23-2 is connected to the fingerprint multiplexing line FP-comb(i ), the fingerprint multiplexing line FP-comb(i-1), and the reset switch control line G-RST. Accordingly, the plurality of pixel columns 37 are driven by the corresponding plurality of display scan lines G-disp and the plurality of fingerprint multiplexing lines FP-comb(i) and controlled by the reset switch control line G-RST to perform Display and fingerprint sensing.

圖11(B)所示的該至少一畫素列37中的第i畫素列的指紋畫素單元23-2的電路結構已描述於圖2(E) ，當使用此指紋畫素單元23-2於指紋顯示裝置中，該至少一畫素列37中的第i畫素列的指紋畫素單元23-2的光學感應元件PS的第二端e2連接至指紋複用線FP-comb(i-1)；重置電晶體T1的控制端(G)連接至顯示掃描線G-disp(i)；重置開關電晶體SW-RST的控制端(G)連接至重置開關控制走線G-RST。The circuit structure of the fingerprint pixel unit 23-2 of the i-th pixel row in the at least one pixel row 37 shown in FIG. 11(B) has been described in FIG. 2(E), when the fingerprint pixel unit 23 is used -2 In the fingerprint display device, the second end e2 of the optical sensing element PS of the fingerprint pixel unit 23-2 of the i-th pixel row in the at least one pixel row 37 is connected to the fingerprint multiplexing line FP-comb ( i-1); the control terminal (G) of the reset transistor T1 is connected to the display scan line G-disp(i); the control terminal (G) of the reset switch transistor SW-RST is connected to the reset switch control line G-RST.

再請參照圖11(B)，同一行(column)的複數個指紋畫素單元23-2的重置開關電晶體SW-RST的控制端(G)相連至一重置開關控制走線G-RST，同一畫素列37的複數個指紋畫素單元23-2的重置電晶體T1的控制端(G)連接到對應的指紋複用線FP-comb(i)，同一畫素列37的複數個指紋畫素單元23-2的光學感應元件PS的第二端e2連接到相鄰的指紋複用線FP-comb，於圖11(B)，為方便說明，相鄰的指紋複用線FP-comb是顯示為前一條指紋複用線FP-comb(i-1)，但本發明不以此為限，可想而知地，相鄰的指紋複用線FP-comb亦可是後一條指紋複用線FP-comb(i+1)。以上述之電路，當進行顯示/觸控時，由於不需要指紋感測之功能，故整合積體電路39經由重置開關控制走線G-RST將重置開關電晶體SW-RST斷開，然本發明不以此為限，只要不影響顯示，亦可選擇不斷開重置開關電晶體SW-RST。而當進行指紋感測時，在對指紋畫素單元23-2的電容C重置之時間，整合積體電路39經由重置開關控制走線G-RST將重置開關電晶體SW-RST導通以致能重置電晶體T1而使指紋複用線FP-comb(i)打開重置電晶體T1來重置電容C的準位；在重置完成後，整合積體電路39經由重置開關控制走線G-RST將重置開關電晶體SW-RST斷開以禁能重置電晶體T1；於光學感應元件PS曝光以進行指紋訊號讀取時，整合積體電路39以相鄰的條指紋複用線FP-comb(i-1)驅動打開光學感應元件PS以提高光學感應元件PS的第二端e2的電壓準位，進而打開驅動電晶體T2，來讀取指紋訊號至讀出端RO’，據此，以上述之方式操作重置開關電晶體SW-RST及驅動指紋複用線FP-comb，即可達到用指紋複用線FP-comb取代重置線RST與選擇線SEL之效果，因而提高面板穿透率。Referring to FIG. 11(B) again, the control terminals (G) of the reset switch transistors SW-RST of a plurality of fingerprint pixel units 23-2 in the same row (column) are connected to a reset switch control line G- RST, the control terminals (G) of the reset transistors T1 of the plurality of fingerprint pixel units 23-2 in the same pixel row 37 are connected to the corresponding fingerprint multiplexing line FP-comb(i), and the The second end e2 of the optical sensing element PS of the plurality of fingerprint pixel units 23-2 is connected to the adjacent fingerprint multiplexing line FP-comb, in FIG. 11(B), for the convenience of description, the adjacent fingerprint multiplexing line FP-comb FP-comb is displayed as the previous fingerprint multiplexing line FP-comb(i-1), but the present invention is not limited to this. It is conceivable that the adjacent fingerprint multiplexing line FP-comb can also be the latter one Fingerprint multiplexing line FP-comb(i+1). With the above circuit, when the display/touch is performed, since the function of fingerprint sensing is not required, the integrated IC 39 disconnects the reset switch transistor SW-RST via the reset switch control line G-RST. However, the present invention is not limited to this, as long as the display is not affected, the reset switching transistor SW-RST can also be selected not to be turned on. During fingerprint sensing, when the capacitor C of the fingerprint pixel unit 23-2 is reset, the integrated circuit 39 turns on the reset switch transistor SW-RST via the reset switch control line G-RST So that the reset transistor T1 can be reset and the fingerprint multiplexing line FP-comb(i) turns on the reset transistor T1 to reset the level of the capacitor C; after the reset is completed, the integrated circuit 39 is controlled by the reset switch The trace G-RST disconnects the reset switch transistor SW-RST to disable the reset transistor T1; when the optical sensing element PS is exposed to read the fingerprint signal, the integrated integrated circuit 39 uses the adjacent fingerprints The multiplexed line FP-comb(i-1) drives the optical sensing element PS to increase the voltage level of the second end e2 of the optical sensing element PS, and then turns on the driving transistor T2 to read the fingerprint signal to the readout terminal RO ', according to this, by operating the reset switch transistor SW-RST and driving the fingerprint multiplexing line FP-comb in the above-mentioned manner, the effect of replacing the reset line RST and the selection line SEL with the fingerprint multiplexing line FP-comb can be achieved , thus improving the panel penetration rate.

此外，於指紋畫素單元23-2整合到顯示畫素單元41時，指紋複用線FP-comb可用金屬層1(metal-1，M1)製作，且重置開關控制走線G-RST是以用其他導電層,例如金屬層0(metal-0，M0) 或金屬層3(metal-3，M3)製作，並設置為與資料線重疊，因此不會因為導入重置開關控制走線G-RST而影響開口率。In addition, when the fingerprint pixel unit 23-2 is integrated into the display pixel unit 41, the fingerprint multiplexing line FP-comb can be made of metal layer 1 (metal-1, M1), and the reset switch control line G-RST is It can be made with other conductive layers, such as metal layer 0 (metal-0, M0) or metal layer 3 (metal-3, M3), and set to overlap with the data line, so it will not control the trace G due to the introduction of the reset switch -RST affects the aperture ratio.

圖11(C)顯示重置開關控制走線G-RST在面板31的顯示區71與其外圍的電路示意圖，其中，重置開關控制走線G-RST經由第一開關SW1接到重置電壓V-RST。為了控制方便，可將各個第一開關SW1接到同一重置開關控制訊號V-SW-RST，其中，重置開關控制訊號V-SW-RST、重置電壓V-RST是由圖10中的整合積體電路39所提供。11(C) shows a schematic circuit diagram of the reset switch control line G-RST in the display area 71 of the panel 31 and its periphery, wherein the reset switch control line G-RST is connected to the reset voltage V via the first switch SW1 -RST. For the convenience of control, each first switch SW1 can be connected to the same reset switch control signal V-SW-RST, wherein the reset switch control signal V-SW-RST and the reset voltage V-RST are determined by the reset switch control signal V-SW-RST in FIG. 10 Provided by the integrated integrated circuit 39 .

圖12、13及14為本發明的指紋顯示裝置的偵測指紋區間時序圖，其中，圖12為一標準掃描的時序，當重置開關電晶體SW-RST導通時，指紋複用線FP-comb的功能即相當於重置線RST，當重置開關電晶體SW-RST關閉時，FP-comb的功能即相當於選擇線；圖13為一延長曝光時間掃描的時序，當中，重置開關電晶體SW-RST只在第一週期時導通，但第二週期不導通。因此可以導致有曝光時間-I與曝光時間-II等兩種曝光時間；而圖14為一顯示與重置重疊掃描的時序，當中，指紋感測的電容重置的時間是與顯示的時間重疊。12, 13 and 14 are timing charts of the fingerprint detection interval of the fingerprint display device of the present invention, wherein, FIG. 12 is a timing sequence of a standard scan. When the reset switch transistor SW-RST is turned on, the fingerprint multiplexing line FP- The function of the comb is equivalent to the reset line RST. When the reset switch transistor SW-RST is turned off, the function of the FP-comb is equivalent to the selection line; The transistor SW-RST conducts only in the first cycle, but does not conduct in the second cycle. Therefore, there can be two exposure times, such as exposure time-I and exposure time-II; and Fig. 14 shows a sequence of overlapping scanning of display and reset, in which the reset time of the fingerprint sensing capacitor overlaps with the display time .

由以上之說明可知，基於內嵌式光學指紋感測器的重置線RST與選擇線SEL為造成開口率降低的主要原因，於本發明的指紋顯示裝置及驅動其之積體電路及方法中，藉由導入重置開關電晶體SW-RST或是導入重置開關電晶體SW-RST與選擇開關電晶體SW-SEL來做顯示掃描線、重置線與選擇線功能之間的切換，可將顯示掃描線、重置線、與選擇線整合成一條，以有效改善面板開口率，或是藉由只導入重置開關電晶體SW-RST來做重置線與選擇線功能之間的切換，可將重置線與選擇線整合成一條指紋複用線，以有效改善面板開口率，同時達成指紋感測之功效。且不會因重置開關電晶體與選擇開關電晶體的走線而降低開口率。It can be seen from the above description that the reset line RST and the select line SEL based on the in-cell optical fingerprint sensor are the main reasons for the reduction of the aperture ratio. In the fingerprint display device and the integrated circuit and method for driving the same of the present invention , by introducing the reset switch transistor SW-RST or introducing the reset switch transistor SW-RST and the selection switch transistor SW-SEL to switch between the functions of the display scan line, the reset line and the selection line, you can Integrate display scan lines, reset lines, and select lines into one to effectively improve the panel aperture ratio, or switch between reset line and select line functions by only introducing reset switching transistor SW-RST , the reset line and the selection line can be integrated into a fingerprint multiplexing line to effectively improve the panel aperture ratio and achieve the effect of fingerprint sensing. And the aperture ratio will not be reduced due to resetting the wiring of the switching transistor and the selection switching transistor.

上述實施例僅係為了方便說明而舉例而已，本發明所主張之權利範圍自應以申請專利範圍所述為準，而非僅限於上述實施例。The above-mentioned embodiments are only examples for convenience of description, and the scope of the claims claimed in the present invention should be based on the scope of the patent application, rather than being limited to the above-mentioned embodiments.

11:指紋感測器 12:薄膜電晶體層 13:濾光基板層 15:玻璃基板 21:指紋畫素單元 T1:重置電晶體 T2:驅動電晶體 T3:選擇電晶體 T4:負載電晶體 PS:光學感應元件 C:電容 RST:重置線 SEL:選擇線 31:面板 71:顯示區 33:顯示驅動的GOA電路 39:整合積體電路 35:指紋感測驅動的GOA電路 41:顯示畫素單元 23, 23-1, 23-2, 25, 25-1, 25-2:指紋畫素單元 61:資料線 SW1, SW2:開關 RO:讀出線 RO’:讀出端 G-disp:顯示掃描線 FP-comb:指紋複用線 G-RST:重置開關控制走線 G-SEL:選擇開關控制走線 G:控制端 D,S:連接端 e1:第一端 VDD1, VDD2, VB, VSS, SVSS, SVDD, Vbias:電壓11: Fingerprint sensor 12: Thin film transistor layer 13: Filter substrate layer 15: Glass substrate 21: Fingerprint pixel unit T1: Reset transistor T2: drive transistor T3: select transistor T4: Load transistor PS: Optical sensing element C: Capacitor RST: reset line SEL: select line 31: Panel 71: Display area 33: Display-driven GOA circuit 39: Integrate integrated circuits 35: Fingerprint Sensing Driven GOA Circuit 41: Display pixel unit 23, 23-1, 23-2, 25, 25-1, 25-2: Fingerprint pixel unit 61: Data line SW1, SW2: switch RO: readout line RO': read terminal G-disp: Display scan lines FP-comb: Fingerprint Multiplexing Line G-RST: Reset switch control trace G-SEL: Selector switch control trace G: control terminal D, S: connection end e1: the first end VDD1, VDD2, VB, VSS, SVSS, SVDD, Vbias: Voltage

圖1顯示整合光學指紋感測器與液晶顯示面板的示意圖。 圖2(A)顯示一種光學指紋畫素單元的電路圖。 圖2(B)顯示另一種光學指紋畫素單元的電路圖。 圖2(C)顯示本發明一實施例的光學指紋畫素單元的電路圖。 圖2(D)顯示本發明另一實施例的光學指紋畫素單元的電路圖。 圖2(E)顯示本發明再一實施例的光學指紋畫素單元的電路圖。 圖2(F)顯示本發明又一實施例的光學指紋畫素單元的電路圖。 圖3顯示本發明的指紋顯示裝置的一實施例的系統架構圖。 圖4(A)示意地顯示出本發明的指紋顯示裝置的一實施例中的第i畫素列的一電路圖。 圖4(B)示意地顯示出本發明的指紋顯示裝置的一實施例中的第i畫素列的另一電路圖。 圖5(A)顯示本發明圖4(A)中的指紋畫素單元整合到顯示畫素單元的示意圖。 圖5(B)顯示本發明圖4(B) 中的指紋畫素單元整合到顯示畫素單元的示意圖。 圖6顯示本發明的指紋顯示裝置中的開關電晶體與重置電晶體/驅動電晶體/選擇電晶體之間以混合串聯閘極構成的串接結構。 圖7顯示本發明的指紋顯示裝置中的重置開關控制走線與選擇開關控制走線在面板的電路示意圖。 圖8顯示本發明的指紋顯示裝置的一運作時序圖。 圖9顯示本發明的指紋顯示裝置的另一運作時序圖。 圖10顯示本發明的指紋顯示裝置的另一實施例的系統架構圖。 圖11(A)示意地顯示出本發明的指紋顯示裝置的另一實施例中的第i畫素列的指紋畫素單元的一電路圖。 圖11(B)示意地顯示出本發明的指紋顯示裝置的另一實施例中的第i畫素列的指紋畫素單元的另一電路圖。 圖11(C)顯示本發明的指紋顯示裝置中的重置開關控制走線在面板的電路示意圖。 圖12、13及14為本發明的指紋顯示裝置的另一實施例的偵測指紋區間時序圖。FIG. 1 shows a schematic diagram of integrating an optical fingerprint sensor and a liquid crystal display panel. FIG. 2(A) shows a circuit diagram of an optical fingerprint pixel unit. FIG. 2(B) shows a circuit diagram of another optical fingerprint pixel unit. FIG. 2(C) shows a circuit diagram of an optical fingerprint pixel unit according to an embodiment of the present invention. FIG. 2(D) shows a circuit diagram of an optical fingerprint pixel unit according to another embodiment of the present invention. FIG. 2(E) shows a circuit diagram of an optical fingerprint pixel unit according to still another embodiment of the present invention. FIG. 2(F) shows a circuit diagram of an optical fingerprint pixel unit according to another embodiment of the present invention. FIG. 3 shows a system architecture diagram of an embodiment of the fingerprint display device of the present invention. FIG. 4(A) schematically shows a circuit diagram of the i-th pixel column in an embodiment of the fingerprint display device of the present invention. FIG. 4(B) schematically shows another circuit diagram of the i-th pixel column in an embodiment of the fingerprint display device of the present invention. FIG. 5(A) shows a schematic diagram of integrating the fingerprint pixel unit in FIG. 4(A) into the display pixel unit of the present invention. FIG. 5(B) shows a schematic diagram of integrating the fingerprint pixel unit in FIG. 4(B) into the display pixel unit of the present invention. FIG. 6 shows a series connection structure composed of mixed series gates between the switching transistor and the reset transistor/driving transistor/selection transistor in the fingerprint display device of the present invention. 7 shows a schematic circuit diagram of the reset switch control wiring and the selection switch control wiring on the panel of the fingerprint display device of the present invention. FIG. 8 shows an operation timing diagram of the fingerprint display device of the present invention. FIG. 9 shows another operation timing diagram of the fingerprint display device of the present invention. FIG. 10 shows a system architecture diagram of another embodiment of the fingerprint display device of the present invention. FIG. 11(A) schematically shows a circuit diagram of the fingerprint pixel unit of the i-th pixel row in another embodiment of the fingerprint display device of the present invention. FIG. 11(B) schematically shows another circuit diagram of the fingerprint pixel unit of the i-th pixel column in another embodiment of the fingerprint display device of the present invention. FIG. 11(C) shows a schematic circuit diagram of the reset switch control wiring on the panel in the fingerprint display device of the present invention. 12 , 13 and 14 are timing charts of fingerprint detection intervals of another embodiment of the fingerprint display device of the present invention.

23,23-1:指紋畫素單元23,23-1: Fingerprint pixel unit

T1:重置電晶體T1: Reset transistor

T2:驅動電晶體T2: drive transistor

T3:選擇電晶體T3: select transistor

T4:負載電晶體T4: Load transistor

PS:光學感應元件PS: Optical sensing element

C:電容C: Capacitor

RO:讀出線RO: readout line

RO’:讀出端RO': read terminal

G-RST:重置開關控制走線G-RST: Reset switch control trace

G:控制端G: control terminal

D,S:連接端D, S: connection end

e1:第一端e1: the first end

e2:第二端e2: the second end

VDD1,VDD2,VB,VSS,Vbias:電壓VDD1,VDD2,VB,VSS,Vbias: Voltage

Claims (39)

一種指紋畫素單元，包括： 一光學感應元件，具有一第一端及一第二端連接至一偏壓電壓； 一電容，具有兩端分別連接至該光學感應元件的第一端及第二端； 一重置電晶體，具有一控制端、一第一連接端、及一第二連接端； 一重置開關電晶體，具有一控制端連接至一重置開關控制走線、一第一連接端、及一第二連接端，其中，該重置電晶體與重置開關電晶體串接於一第一電壓與該光學感應元件的第一端之間； 一驅動電晶體，具有一控制端連接至該光學感應元件的第一端、一第一連接端連接於一第二電壓、及一第二連接端；以及 一選擇電晶體，具有一控制端、一第一連接端、及一第二連接端，該選擇電晶體連接於該驅動電晶體的第二連接端與一讀出線之間。A fingerprint pixel unit, comprising: an optical sensing element having a first end and a second end connected to a bias voltage; a capacitor with two ends respectively connected to the first end and the second end of the optical sensing element; a reset transistor having a control terminal, a first connection terminal, and a second connection terminal; A reset switch transistor has a control terminal connected to a reset switch control wire, a first connection terminal, and a second connection terminal, wherein the reset transistor and the reset switch transistor are connected in series with between a first voltage and the first end of the optical sensing element; a driving transistor having a control end connected to the first end of the optical sensing element, a first connection end connected to a second voltage, and a second connection end; and A selection transistor has a control terminal, a first connection terminal, and a second connection terminal. The selection transistor is connected between the second connection terminal of the driving transistor and a readout line. 如請求項1所述之指紋畫素單元，其中，該選擇電晶體的第一連接端連接至該驅動電晶體的第二連接端，該選擇電晶體的第二連接端連接該讀出線，該重置電晶體的第二連接端連接至該光學感應元件的第一端，該重置電晶體的第一連接端連接至該重置開關電晶體的第二連接端，該重置開關電晶體的第一連接端連接至該第一電壓。The fingerprint pixel unit of claim 1, wherein the first connection end of the selection transistor is connected to the second connection end of the drive transistor, and the second connection end of the selection transistor is connected to the readout line, The second connection end of the reset transistor is connected to the first end of the optical sensing element, the first connection end of the reset transistor is connected to the second connection end of the reset switch transistor, the reset switch is electrically The first connection terminal of the crystal is connected to the first voltage. 如請求項1所述之指紋畫素單元，其更包含： 一選擇開關電晶體，具有一控制端連接至一選擇開關控制走線、一第一連接端、及一第二連接端，其中，該選擇電晶體及選擇開關電晶體串接於該驅動電晶體的第二連接端與該讀出線之間，或是該選擇開關電晶體連接於該第二電壓與該驅動電晶體之間。The fingerprint pixel unit of claim 1, further comprising: A selection switch transistor has a control terminal connected to a selection switch control wire, a first connection terminal, and a second connection terminal, wherein the selection transistor and the selection switch transistor are connected in series with the driving transistor Between the second connection terminal of the sensor and the readout line, or the selection switch transistor is connected between the second voltage and the drive transistor. 如請求項3所述之指紋畫素單元，其中，該重置電晶體的第二連接端連接至該光學感應元件的第一端，該重置電晶體的第一連接端連接至該重置開關電晶體的第二連接端，該重置開關電晶體的第一連接端連接至該第一電壓，該選擇開關電晶體的第二連接端連接至該讀出線，該選擇開關電晶體的第一連接端連接至該選擇電晶體的第二連接端，該選擇電晶體的第一連接端連接至該驅動電晶體的第二連接端。The fingerprint pixel unit of claim 3, wherein the second connection end of the reset transistor is connected to the first end of the optical sensing element, and the first connection end of the reset transistor is connected to the reset The second connection terminal of the switch transistor, the first connection terminal of the reset switch transistor is connected to the first voltage, the second connection terminal of the select switch transistor is connected to the readout line, the select switch transistor The first connection terminal is connected to the second connection terminal of the selection transistor, and the first connection terminal of the selection transistor is connected to the second connection terminal of the driving transistor. 一種指紋畫素單元，包括： 一光學感應元件，具有一第一端及一第二端； 一電容，具有兩端分別連接至該光學感應元件的第一端及第二端； 一重置電晶體，具有一控制端、一第一連接端、及一第二連接端； 一重置開關電晶體，具有一控制端連接至一重置開關控制走線、一第一連接端、及一第二連接端，其中，該重置電晶體與重置開關電晶體串接於一第三電壓與該光學感應元件的第一端之間；以及 一驅動電晶體，具有一控制端連接至該光學感應元件的第一端、一第一連接端、及一第二連接端，該驅動電晶體連接於一第四電壓與一讀出線之間。A fingerprint pixel unit, comprising: an optical sensing element having a first end and a second end; a capacitor with two ends respectively connected to the first end and the second end of the optical sensing element; a reset transistor having a control terminal, a first connection terminal, and a second connection terminal; A reset switch transistor has a control terminal connected to a reset switch control wire, a first connection terminal, and a second connection terminal, wherein the reset transistor and the reset switch transistor are connected in series with between a third voltage and the first end of the optical sensing element; and a driving transistor having a control terminal connected to the first terminal of the optical sensing element, a first connection terminal, and a second connection terminal, the driving transistor is connected between a fourth voltage and a readout line . 如請求項5所述之指紋畫素單元，其中，該驅動電晶體T2的第一連接端連接至該第四電壓，該驅動電晶體的第二連接端連接至該讀出線，該重置電晶體的第二連接端連接至該光學感應元件的第一端，該重置電晶體的第一連接端連接至該重置開關電晶體的第二連接端，該重置開關電晶體的第一連接端連接至該第三電壓。The fingerprint pixel unit of claim 5, wherein the first connection terminal of the driving transistor T2 is connected to the fourth voltage, the second connection terminal of the driving transistor is connected to the readout line, and the reset The second connection end of the transistor is connected to the first end of the optical sensing element, the first connection end of the reset transistor is connected to the second connection end of the reset switch transistor, and the first connection end of the reset switch transistor A connection terminal is connected to the third voltage. 如請求項5所述之指紋畫素單元，其更包含： 一選擇開關電晶體，具有一控制端連接至一選擇開關控制走線、一第一連接端、及一第二連接端，其中，該驅動電晶體及選擇開關電晶體串接於該第四電壓與該讀出線之間。The fingerprint pixel unit of claim 5, further comprising: a selection switch transistor, which has a control terminal connected to a selection switch control wire, a first connection terminal, and a second connection terminal, wherein the driving transistor and the selection switch transistor are connected in series to the fourth voltage and the readout line. 如請求項7所述之指紋畫素單元，其中，該重置電晶體的第二連接端連接至該光學感應元件的第一端，該重置電晶體的第一連接端連接至該重置開關電晶體的第二連接端，該驅動電晶體的第二連接端連接至該讀出線，該驅動電晶體的第一連接端連接至該選擇開關電晶體的第二連接端，該選擇開關電晶體的第一連接端連接至該第四電壓。The fingerprint pixel unit of claim 7, wherein the second connection end of the reset transistor is connected to the first end of the optical sensing element, and the first connection end of the reset transistor is connected to the reset the second connection end of the switch transistor, the second connection end of the drive transistor is connected to the readout line, the first connection end of the drive transistor is connected to the second connection end of the selection switch transistor, the selection switch The first connection terminal of the transistor is connected to the fourth voltage. 一種指紋顯示裝置，具有複數畫素列，至少一畫素列具有複數個顯示畫素單元與複數個指紋畫素單元，以被驅動來進行顯示及指紋感測，其中，每一指紋畫素單元包括： 一光學感應元件，具有一第一端及一第二端連接至一偏壓電壓； 一電容，具有兩端分別連接至該光學感應元件的第一端及第二端； 一重置電晶體，具有一控制端、一第一連接端、及一第二連接端； 一重置開關電晶體，具有一控制端連接至一重置開關控制走線、一第一連接端、及一第二連接端，其中，該重置電晶體與重置開關電晶體串接於一第一電壓與該光學感應元件的第一端之間； 一驅動電晶體，具有一控制端連接至該光學感應元件的第一端、一第一連接端連接於一第二電壓、及一第二連接端；以及 一選擇電晶體，具有一控制端、一第一連接端、及一第二連接端，該選擇電晶體連接於該驅動電晶體的第二連接端與一讀出線之間。A fingerprint display device has a plurality of pixel rows, at least one pixel row has a plurality of display pixel units and a plurality of fingerprint pixel units to be driven to perform display and fingerprint sensing, wherein each fingerprint pixel unit include: an optical sensing element having a first end and a second end connected to a bias voltage; a capacitor with two ends respectively connected to the first end and the second end of the optical sensing element; a reset transistor having a control terminal, a first connection terminal, and a second connection terminal; A reset switch transistor has a control terminal connected to a reset switch control wire, a first connection terminal, and a second connection terminal, wherein the reset transistor and the reset switch transistor are connected in series with between a first voltage and the first end of the optical sensing element; a driving transistor having a control end connected to the first end of the optical sensing element, a first connection end connected to a second voltage, and a second connection end; and A selection transistor has a control terminal, a first connection terminal, and a second connection terminal. The selection transistor is connected between the second connection terminal of the driving transistor and a readout line. 如請求項9所述之指紋顯示裝置，其中，該選擇電晶體的第一連接端連接至該驅動電晶體的第二連接端，該選擇電晶體的第二連接端連接該讀出線，該重置電晶體的第二連接端連接至該光學感應元件的第一端，該重置電晶體的第一連接端連接至該重置開關電晶體的第二連接端，該重置開關電晶體的第一連接端連接至該第一電壓，且該至少一畫素列是以對應的至少一顯示掃描線及至少一指紋複用線所驅動以進行顯示及指紋感測，該重置電晶體的控制端連接至對應的指紋複用線，該選擇電晶體的控制端連接至該對應的指紋複用線。The fingerprint display device according to claim 9, wherein the first connection end of the selection transistor is connected to the second connection end of the driving transistor, the second connection end of the selection transistor is connected to the readout line, and the The second connection end of the reset transistor is connected to the first end of the optical sensing element, the first connection end of the reset transistor is connected to the second connection end of the reset switch transistor, and the reset switch transistor The first connection terminal of the is connected to the first voltage, and the at least one pixel row is driven by corresponding at least one display scan line and at least one fingerprint multiplexing line for display and fingerprint sensing. The reset transistor The control terminal of the transistor is connected to the corresponding fingerprint multiplexing line, and the control terminal of the selection transistor is connected to the corresponding fingerprint multiplexing line. 如請求項10所述之指紋顯示裝置，其中，於進行指紋感測時，經由該重置開關控制走線將該重置開關電晶體導通，而使該指紋複用線打開該重置電晶體來重置該電容的準位；在重置完成後，經由該重置開關控制走線將該重置開關電晶體斷開；於該光學感應元件曝光以進行指紋訊號讀取時，驅動該對應的指紋複用線以打開該選擇電晶體來讀取指紋訊號至該讀出線。The fingerprint display device of claim 10, wherein during fingerprint sensing, the reset switch transistor is turned on via the reset switch control line, so that the fingerprint multiplexing line turns on the reset transistor to reset the level of the capacitor; after the reset is completed, the reset switch transistor is disconnected through the reset switch control line; when the optical sensing element is exposed for fingerprint signal reading, the corresponding The fingerprint multiplexing line is used to turn on the selection transistor to read the fingerprint signal to the readout line. 如請求項11所述之指紋顯示裝置，其中，該重置開關控制走線是設置為與該指紋顯示裝置的資料線重疊。The fingerprint display device of claim 11, wherein the reset switch control line is set to overlap with the data line of the fingerprint display device. 如請求項11所述之指紋顯示裝置，其中，該重置開關控制走線經由一第一開關連接到一重置電壓，該第一開關由一重置開關控制訊號所控制。The fingerprint display device of claim 11, wherein the reset switch control line is connected to a reset voltage via a first switch, and the first switch is controlled by a reset switch control signal. 如請求項11所述之指紋顯示裝置，其中，在該指紋顯示裝置的第一週期及接續的第二週期中，該重置開關電晶體只在該第一週期時導通，但在第二週期不導通，以導致兩種曝光時間。The fingerprint display device of claim 11, wherein, in the first cycle and the subsequent second cycle of the fingerprint display device, the reset switching transistor is only turned on during the first cycle, but is turned on during the second cycle. non-conduction, resulting in two exposure times. 如請求項9所述之指紋顯示裝置，其更包含： 一選擇開關電晶體，具有一控制端連接至一選擇開關控制走線、一第一連接端、及一第二連接端，其中，該選擇電晶體及選擇開關電晶體串接於該驅動電晶體的第二連接端與該讀出線之間，且該至少一畫素列是以對應的至少一顯示掃描線所驅動以進行顯示及指紋感測，該重置電晶體的控制端連接至對應的顯示掃描線，該選擇電晶體的控制端連接至該對應的顯示掃描線，或是該選擇開關電晶體連接於該第二電壓與該驅動電晶體之間。The fingerprint display device according to claim 9, further comprising: A selection switch transistor has a control terminal connected to a selection switch control wire, a first connection terminal, and a second connection terminal, wherein the selection transistor and the selection switch transistor are connected in series with the driving transistor Between the second connection terminal of the reset transistor and the readout line, and the at least one pixel row is driven by the corresponding at least one display scan line for display and fingerprint sensing, the control terminal of the reset transistor is connected to the corresponding the display scan line, the control terminal of the selection transistor is connected to the corresponding display scan line, or the selection switch transistor is connected between the second voltage and the drive transistor. 如請求項15所述之指紋顯示裝置，其中，該重置電晶體的第二連接端連接至該光學感應元件的第一端，該重置電晶體的第一連接端連接至該重置開關電晶體的第二連接端，該重置開關電晶體的第一連接端連接至該第一電壓，該選擇開關電晶體的第二連接端連接至該讀出線，該選擇開關電晶體的第一連接端連接至該選擇電晶體的第二連接端，該選擇電晶體的第一連接端連接至該驅動電晶體的第二連接端。The fingerprint display device of claim 15, wherein the second connection end of the reset transistor is connected to the first end of the optical sensing element, and the first connection end of the reset transistor is connected to the reset switch the second connection end of the transistor, the first connection end of the reset switch transistor is connected to the first voltage, the second connection end of the select switch transistor is connected to the readout line, the first connection end of the select switch transistor A connection terminal is connected to the second connection terminal of the selection transistor, and the first connection terminal of the selection transistor is connected to the second connection terminal of the driving transistor. 如請求項15所述之指紋顯示裝置，其中，於進行指紋感測時，經由該重置開關控制走線將該重置開關電晶體導通，而使該對應的顯示掃描線打開該重置電晶體來重置該電容的準位；在重置完成後，經由該重置開關控制走線將該重置開關電晶體斷開；於該光學感應元件曝光以進行指紋訊號讀取時，經由該選擇開關控制走線將該選擇開關電晶體導通，而使該對應的顯示掃描線打開該選擇電晶體來讀取指紋訊號至該讀出線。The fingerprint display device of claim 15, wherein during fingerprint sensing, the reset switch transistor is turned on through the reset switch control line, so that the corresponding display scan line turns on the reset power crystal to reset the level of the capacitor; after the reset is completed, the reset switch transistor is disconnected through the reset switch control line; when the optical sensing element is exposed for fingerprint signal reading, through the reset switch The selection switch control line turns on the selection switch transistor, so that the corresponding display scan line turns on the selection transistor to read the fingerprint signal to the readout line. 如請求項15所述之指紋顯示裝置，其中，該重置開關控制走線與選擇開關控制走線是設置為與該指紋顯示裝置的資料線重疊。The fingerprint display device of claim 15, wherein the reset switch control wiring and the selection switch control wiring are arranged to overlap with the data wiring of the fingerprint display device. 如請求項15所述之指紋顯示裝置，其中，該重置開關控制走線經由一第一開關連接到一重置電壓，該選擇開關控制走線經由一第二開關連接到一選擇電壓，該第一開關由一重置開關控制訊號所控制，該第二開關由一選擇開關控制訊號所控制。The fingerprint display device of claim 15, wherein the reset switch control line is connected to a reset voltage via a first switch, the selection switch control line is connected to a selection voltage via a second switch, the The first switch is controlled by a reset switch control signal, and the second switch is controlled by a selection switch control signal. 如請求項15所述之指紋顯示裝置，其中，在該指紋顯示裝置的第一週期及接續的第二週期中，該重置開關電晶體只在該第一週期時導通，但在第二週期不導通，以導致兩種曝光時間。The fingerprint display device of claim 15, wherein in the first cycle and the subsequent second cycle of the fingerprint display device, the reset switching transistor is only turned on during the first cycle, but is turned on during the second cycle. non-conduction, resulting in two exposure times. 如請求項9所述之指紋顯示裝置，其更包含藉由切割該指紋顯示裝置的面板的公共電極來作為觸控感應器以實現觸控感應功能。The fingerprint display device according to claim 9, further comprising cutting the common electrode of the panel of the fingerprint display device as a touch sensor to realize a touch sensing function. 一種驅動如請求項9所述之指紋顯示裝置的方法，包含： 經由該重置開關控制走線將該重置開關電晶體導通，以打開該重置電晶體來重置該電容的準位； 經由該重置開關控制走線將該重置開關電晶體斷開；以及 驅動以打開該選擇電晶體來讀取指紋訊號至該讀出線。A method for driving a fingerprint display device as described in claim 9, comprising: Conducting the reset switch transistor via the reset switch control line to turn on the reset transistor to reset the level of the capacitor; disconnecting the reset switch transistor via the reset switch control trace; and Drive to turn on the selection transistor to read the fingerprint signal to the readout line. 一種整合積體電路，用以控制如請求項9所述之指紋顯示裝置，以驅動該至少一畫素列，並經由該重置開關控制走線的控制來進行顯示及指紋感測。An integrated integrated circuit is used to control the fingerprint display device as claimed in claim 9, to drive the at least one pixel row, and to perform display and fingerprint sensing through the control of the reset switch control wiring. 一種指紋顯示裝置，具有複數畫素列，至少一畫素列具有複數個顯示畫素單元與複數個指紋畫素單元，以被驅動來進行顯示及指紋感測，其中，每一指紋畫素單元包括： 一光學感應元件，具有一第一端及一第二端連接； 一電容，具有兩端分別連接至該光學感應元件的第一端及第二端； 一重置電晶體，具有一控制端、一第一連接端、及一第二連接端； 一重置開關電晶體，具有一控制端連接至一重置開關控制走線、一第一連接端、及一第二連接端，其中，該重置電晶體與重置開關電晶體串接於一第三電壓與該光學感應元件的第一端之間；以及 一驅動電晶體，具有一控制端連接至該光學感應元件的第一端、一第一連接端、及一第二連接端，該驅動電晶體連接於一第四電壓與一讀出線之間。A fingerprint display device has a plurality of pixel rows, at least one pixel row has a plurality of display pixel units and a plurality of fingerprint pixel units to be driven to perform display and fingerprint sensing, wherein each fingerprint pixel unit include: an optical sensing element having a first end and a second end connected; a capacitor with two ends respectively connected to the first end and the second end of the optical sensing element; a reset transistor having a control terminal, a first connection terminal, and a second connection terminal; A reset switch transistor has a control terminal connected to a reset switch control wire, a first connection terminal, and a second connection terminal, wherein the reset transistor and the reset switch transistor are connected in series with between a third voltage and the first end of the optical sensing element; and a driving transistor having a control terminal connected to the first terminal of the optical sensing element, a first connection terminal, and a second connection terminal, the driving transistor is connected between a fourth voltage and a readout line . 如請求項24所述之指紋顯示裝置，其中，該驅動電晶體的第一連接端連接至該第四電壓，該驅動電晶體的第二連接端連接至該讀出線，該重置電晶體的第二連接端連接至該光學感應元件的第一端，該重置電晶體的第一連接端連接至該重置開關電晶體的第二連接端，該重置開關電晶體的第一連接端連接至該第三電壓，且該至少一畫素列是以對應的至少一顯示掃描線及至少一指紋複用線所驅動以進行顯示及指紋感測，該重置電晶體的控制端連接至對應的指紋複用線。The fingerprint display device of claim 24, wherein the first connection end of the driving transistor is connected to the fourth voltage, the second connection end of the driving transistor is connected to the readout line, and the reset transistor The second connection end of the reset transistor is connected to the first end of the optical sensing element, the first connection end of the reset transistor is connected to the second connection end of the reset switch transistor, and the first connection of the reset switch transistor The terminal is connected to the third voltage, and the at least one pixel row is driven by corresponding at least one display scan line and at least one fingerprint multiplexing line for display and fingerprint sensing, and the control terminal of the reset transistor is connected to to the corresponding fingerprint multiplexing line. 如請求項25所述之指紋顯示裝置，其中，於進行指紋感測時，經由該重置開關控制走線將該重置開關電晶體導通，而使該對應的指紋複用線打開該重置電晶體來重置該電容的準位；在重置完成後，經由該重置開關控制走線將該重置開關電晶體斷開；於該光學感應元件曝光以進行指紋訊號讀取時，以該對應的指紋複用線的相鄰的指紋複用線驅動該光學感應元件，進而打開驅動電晶體來讀取指紋訊號至該讀出線。The fingerprint display device as claimed in claim 25, wherein during fingerprint sensing, the reset switch transistor is turned on through the reset switch control line, and the corresponding fingerprint multiplexing line is turned on for the reset The transistor resets the level of the capacitor; after the reset is completed, the reset switch transistor is disconnected through the reset switch control line; when the optical sensing element is exposed to read the fingerprint signal, the The adjacent fingerprint multiplexing line of the corresponding fingerprint multiplexing line drives the optical sensing element, and then turns on the driving transistor to read the fingerprint signal to the readout line. 如請求項25所述之指紋顯示裝置，其中，該重置開關控制走線是設置為與該指紋顯示裝置的資料線重疊。The fingerprint display device of claim 25, wherein the reset switch control line is set to overlap with the data line of the fingerprint display device. 如請求項25所述之指紋顯示裝置，其中，該重置開關控制走線經由一第一開關連接到一重置電壓，該第一開關由一重置開關控制訊號所控制。The fingerprint display device of claim 25, wherein the reset switch control line is connected to a reset voltage via a first switch, and the first switch is controlled by a reset switch control signal. 如請求項25所述之指紋顯示裝置，其中，在該指紋顯示裝置的第一週期及接續的第二週期中，該重置開關電晶體只在該第一週期時導通，但在第二週期不導通，以導致兩種曝光時間。The fingerprint display device of claim 25, wherein, in the first cycle and the subsequent second cycle of the fingerprint display device, the reset switching transistor is only turned on during the first cycle, but is turned on during the second cycle. non-conduction, resulting in two exposure times. 如請求項25所述之指紋顯示裝置，其中，更包含藉由切割該指紋顯示裝置的面板的公共電極來作為觸控感應器以實現觸控感應功能。。The fingerprint display device according to claim 25, further comprising cutting the common electrode of the panel of the fingerprint display device as a touch sensor to realize the touch sensing function. . 如請求項24所述之指紋顯示裝置，其更包含： 一選擇開關電晶體，具有一控制端連接至一選擇開關控制走線、一第一連接端、及一第二連接端，其中，該驅動電晶體及選擇開關電晶體串接於該第四電壓與該讀出線之間，且該至少一畫素列是以對應的至少一顯示掃描線所驅動以進行顯示及指紋感測，該光學感應元件的第二端連接至對應的顯示掃描線的相鄰的顯示掃描線，該重置電晶體的控制端連接至該對應的顯示掃描線。The fingerprint display device of claim 24, further comprising: a selection switch transistor, which has a control terminal connected to a selection switch control wire, a first connection terminal, and a second connection terminal, wherein the driving transistor and the selection switch transistor are connected in series to the fourth voltage and the readout line, and the at least one pixel row is driven by the corresponding at least one display scan line for display and fingerprint sensing, the second end of the optical sensing element is connected to the corresponding display scan line For adjacent display scan lines, the control terminal of the reset transistor is connected to the corresponding display scan line. 如請求項31所述之指紋顯示裝置，其中，該重置電晶體的第二連接端連接至該光學感應元件的第一端，該重置電晶體的第一連接端連接至該重置開關電晶體的第二連接端，該重置開關電晶體的第一連接端連接至該第三電壓，該驅動電晶體的第二連接端連接至該讀出線，該驅動電晶體的第一連接端連接至該選擇開關電晶體的第二連接端，該選擇開關電晶體的第一連接端連接至該第四電壓。The fingerprint display device of claim 31, wherein the second connection end of the reset transistor is connected to the first end of the optical sensing element, and the first connection end of the reset transistor is connected to the reset switch the second connection end of the transistor, the first connection end of the reset switch transistor is connected to the third voltage, the second connection end of the drive transistor is connected to the readout line, the first connection end of the drive transistor The terminal is connected to the second connection terminal of the selection switch transistor, and the first connection terminal of the selection switch transistor is connected to the fourth voltage. 如請求項31所述之指紋顯示裝置，其中，於進行指紋感測時，經由該重置開關控制走線將該重置開關電晶體導通，而使該對應的顯示掃描線打開該重置電晶體來重置該電容的準位；在重置完成後，經由該重置開關控制走線將該重置開關電晶體斷開；於該光學感應元件曝光以進行指紋訊號讀取時，經由該選擇開關控制走線將該選擇開關電晶體導通，且以該相鄰的顯示掃描線驅動該光學感應元件，進而打開該驅動電晶體來讀取指紋訊號至該讀出線。The fingerprint display device as claimed in claim 31, wherein during fingerprint sensing, the reset switch transistor is turned on through the reset switch control line, so that the corresponding display scan line turns on the reset power crystal to reset the level of the capacitor; after the reset is completed, the reset switch transistor is disconnected through the reset switch control line; when the optical sensing element is exposed for fingerprint signal reading, through the reset switch The selection switch control line turns on the selection switch transistor, and drives the optical sensing element with the adjacent display scan line, and then turns on the drive transistor to read the fingerprint signal to the readout line. 如請求項31所述之指紋顯示裝置，其中，該重置開關控制走線與選擇開關控制走線是設置為與該指紋顯示裝置的資料線重疊。The fingerprint display device of claim 31, wherein the reset switch control wiring and the selection switch control wiring are arranged to overlap with the data wiring of the fingerprint display device. 如請求項31所述之指紋顯示裝置，其中，該重置開關控制走線經由一第一開關連接到一重置電壓，該選擇開關控制走線經由一第二開關連接到一選擇電壓，該第一開關由一重置開關控制訊號所控制，該第二開關由一選擇開關控制訊號所控制。The fingerprint display device of claim 31, wherein the reset switch control line is connected to a reset voltage via a first switch, the selection switch control line is connected to a selection voltage via a second switch, the The first switch is controlled by a reset switch control signal, and the second switch is controlled by a selection switch control signal. 如請求項31所述之指紋顯示裝置，其中，在該指紋顯示裝置的第一週期及接續的第二週期中，該重置開關電晶體只在該第一週期時導通，但在第二週期不導通，以導致兩種曝光時間。The fingerprint display device of claim 31, wherein, in the first cycle and the subsequent second cycle of the fingerprint display device, the reset switching transistor is only turned on during the first cycle, but is turned on during the second cycle. non-conduction, resulting in two exposure times. 如請求項24所述之指紋顯示裝置，其更包含藉由切割該指紋顯示裝置的面板的公共電極來作為觸控感應器以實現觸控感應功能。The fingerprint display device as claimed in claim 24, further comprising cutting the common electrode of the panel of the fingerprint display device as a touch sensor to realize a touch sensing function. 一種驅動如請求項24所述之指紋顯示裝置的方法，包含： 經由該重置開關控制走線將該重置開關電晶體導通，以打開該重置電晶體來重置該電容的準位； 經由該重置開關控制走線將該重置開關電晶體斷開；以及 驅動該光學感應元件，以打開該驅動電晶體來讀取指紋訊號至該讀出線。A method of driving a fingerprint display device as described in claim 24, comprising: Conducting the reset switch transistor via the reset switch control line to turn on the reset transistor to reset the level of the capacitor; disconnecting the reset switch transistor via the reset switch control trace; and The optical sensing element is driven to turn on the driving transistor to read the fingerprint signal to the readout line. 一種整合積體電路，用以控制如請求項24所述之指紋顯示裝置，以驅動該至少一畫素列並經由該重置開關控制走線的控制來進行顯示及指紋感測。An integrated integrated circuit is used to control the fingerprint display device as claimed in claim 24, so as to drive the at least one pixel row and perform display and fingerprint sensing through the control of the reset switch control wiring.
TW109144891A 2020-06-30 2020-12-18 Fingerprint pixel unit, fingerprint display device and integrated circuit and method for driving the same TWI765481B (en)

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