WO2020133645A1 - 有机发光二极管显示面板及其运行方法 - Google Patents

有机发光二极管显示面板及其运行方法 Download PDF

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Publication number
WO2020133645A1
WO2020133645A1 PCT/CN2019/075502 CN2019075502W WO2020133645A1 WO 2020133645 A1 WO2020133645 A1 WO 2020133645A1 CN 2019075502 W CN2019075502 W CN 2019075502W WO 2020133645 A1 WO2020133645 A1 WO 2020133645A1
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Prior art keywords
sensor
display panel
fingerprint recognition
emitting diode
organic light
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PCT/CN2019/075502
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English (en)
French (fr)
Inventor
李文齐
鲜于文旭
Original Assignee
武汉华星光电半导体显示技术有限公司
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Priority to US17/048,082 priority Critical patent/US20210158749A1/en
Publication of WO2020133645A1 publication Critical patent/WO2020133645A1/zh

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    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G06F3/04166—Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving
    • G06F3/041661—Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving using detection at multiple resolutions, e.g. coarse and fine scanning; using detection within a limited area, e.g. object tracking window
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    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
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Definitions

  • the invention relates to the field of display technology, in particular to an organic light-emitting diode display panel and an operation method thereof.
  • the touch function can be achieved by attaching an organic film layer, which is formed by depositing metal electrodes and wires using physical vapor deposition (PVD) and etching processes.
  • PVD physical vapor deposition
  • the traditional fingerprint recognition adopts capacitive fingerprint recognition technology
  • a fingerprint recognition button module is provided in the lower frame of the mobile phone.
  • the button module is provided with a capacitance sensing electrode array, which reacts to the change of the concave and convex of the fingerprint according to the capacitance. Capacitor charging and discharging to realize fingerprint identification.
  • optical fingerprint recognition technology and ultrasonic fingerprint recognition technology have gradually become popular, which has enriched fingerprint recognition solutions. However, it is still achieved through an external fingerprint recognition module.
  • the mainstream of pressure sensing technology is also to affix a sensing membrane material on the back of the display module, and then connect to the main board through the circuit of the membrane material, and realize the pressure sensing function through the control operation of the main board.
  • the pressure sensing function is embedded in the non-effective display area on both sides of the module, or the effective display area.
  • the object of the present invention is to provide an organic light emitting diode display panel and its operating method, to realize a new concept of OLED display panel, comprehensively integrated use of touch, pressure sensing and fingerprint recognition three technical functions.
  • the present invention provides an organic light emitting diode display panel, including a touch sensor, a pressure sensor, and a fingerprint recognition sensor integrated in the display panel; the touch sensor is distributed throughout the display panel In the display area, the pressure-sensitive sensor is distributed near the edge of the effective display area, and the fingerprint recognition sensor is distributed in a position below the effective display area.
  • the touch sensor is a resistive or capacitive touch sensor.
  • the capacitive touch sensor is a self-capacitive or mutual-capacitive touch sensor.
  • the pressure sensing sensor is a resistive or capacitive pressure sensing sensor.
  • the fingerprint recognition sensor is an optical, capacitive or ultrasonic fingerprint recognition sensor.
  • the organic light emitting diode display panel is a non-foldable display panel or a foldable display panel.
  • the fingerprint recognition sensor is distributed in a fingerprint recognition area, and the fingerprint recognition area is a single sensor area or includes a plurality of separate sensor areas.
  • the shape of the sensor area is circular or polygonal.
  • the fingerprint recognition sensor is a capacitive fingerprint recognition sensor
  • the touch sensor is a mutual capacitance touch sensor
  • the mutual capacitance touch sensor and the capacitive fingerprint recognition in the range of the fingerprint recognition area
  • the sensors share a sensor metal pad.
  • the common sensor metal pad is connected to the first peripheral circuit controlled by the first enable signal.
  • the common sensor metal pad is also connected to the second peripheral circuit controlled by the second enable signal.
  • the first enable signal and the second enable signal control the time-division multiplexing of the fingerprint recognition function and the touch control function.
  • the touch sensor is an in-cell, in-cell or plug-in touch sensor.
  • the present invention also provides an operation method of the organic light emitting diode display panel as described above, including:
  • the display panel displays the fingerprint recognition area to guide the user to unlock the screen desktop through the fingerprint recognition sensor;
  • the user After unlocking the desktop, the user starts to use the touch function through the touch sensor.
  • the organic light emitting diode display panel and its operating method of the present invention propose a product that combines the three technologies of touch, pressure sensing and fingerprint recognition; in particular, in the flexible OLED display technology, a comprehensive application of this technology is designed.
  • the three technical functions of the flexible OLED display panel operating in time-sharing have realized the design of a new concept of OLED display panel, which provides a solution for the development of dynamic foldable display panel design in accordance with ergonomics and modern aesthetics.
  • FIG. 1 is a schematic diagram of integrated distribution of three sensors in a non-folding display panel according to a preferred embodiment of the present invention
  • FIG. 2 is a schematic diagram of an operation method of a non-folding display panel according to a preferred embodiment of the present invention
  • FIG. 3 is a flowchart of an operation method of an organic light emitting diode display panel of the present invention.
  • FIG. 4 is a schematic diagram of the integrated distribution and operation method of three sensors in a foldable display panel according to another preferred embodiment of the present invention.
  • FIG. 5 is a schematic diagram of the integrated distribution of a capacitive fingerprint recognition sensor and a mutual-capacitance touch sensor according to yet another preferred embodiment of the present invention.
  • FIG. 6 is a schematic diagram of an integrated distribution of pressure sensing sensors according to another preferred embodiment of the present invention.
  • the present invention proposes an organic light emitting diode display panel that integrates the three technologies of touch, pressure sensing and fingerprint recognition, and mainly includes a touch sensor, a pressure sensing sensor and a fingerprint recognition sensor integrated in the display panel;
  • the touch sensor is distributed in the entire effective display area of the display panel, the pressure sensor is distributed near the edge of the effective display area, and the fingerprint recognition sensor is distributed below the effective display area
  • FIG. 1 is a schematic diagram of the integrated distribution of three sensors in a non-folding display panel according to a preferred embodiment of the present invention.
  • AA effective display area
  • the pressure sensor 12 is located near the edge of the effective display area 11
  • the fingerprint recognition sensor is located below the effective display area 11, in the fingerprint Within the recognition area 13. Since the display panel has a three-dimensional structure, FIG. 1 is only used to show the planar distribution relationship of the three sensors in the display panel.
  • the pressure sensor can also be distributed outside the effective display area, that is, the area of the upper, lower, left, and right borders of the display panel, and the fingerprint recognition area can also be distributed anywhere on the edge of the effective display area, especially the lower edge, because of this
  • the fingerprint recognition area is closer to the driving chip, which is conducive to the process of wire routing, and the length of the deposited and etched wire is shorter, which is easy to implement in the process.
  • FIG. 2 is a schematic diagram of an operation method of a non-folding display panel according to a preferred embodiment of the present invention.
  • This preferred embodiment uses the function of the non-folding display panel in time-sharing.
  • a smart device such as a smartphone or tablet computer, senses the beginning of the user's use of the device through a pressure-sensitive sensor, and the hand presses the surface of the display panel to generate An on signal turns on the power of the screen, causing the fingerprint recognition area 13 of the effective display area 11 of the display panel to emit light, displaying the position of the fingerprint recognition area 13, and guiding the user to touch the fingerprint recognition area 13 with the goal of unlocking the screen desktop, unlocking the desktop
  • the effective display area 11 of the rear display panel can start normal display and provide users with touch functions to operate various smart device applications (apps) in the device. Thereafter, the pressure sensing function of the device can also be implemented in accordance with conventional practices. Induction of different pressure levels.
  • FIG. 4 is a schematic diagram of the integrated distribution and operation method of three sensors in a foldable display panel according to another preferred embodiment of the present invention.
  • the distribution positions of various types of sensors are similar to those of the non-folding display panel.
  • the touch sensors (not shown) are distributed throughout the effective display area 21, the pressure sensor 22 is located near the edge of the effective display area 21, and the fingerprint recognition sensor (not shown) is distributed below the effective display area 21 , In the fingerprint recognition area 23.
  • the pressure sensor 22 is distributed near the edge of the effective display area 21, within the edge, and may be outside the edge in other embodiments.
  • the fingerprint recognition sensor is located in the fingerprint recognition area 23 below the effective display area 21, and the fingerprint recognition area 23 can be located at any position along the edge of the effective display area 21; as shown in FIG. 4, the fingerprint recognition area 23 is a circular area. In the embodiment, it may also be a polygonal area such as a rectangle, a triangle, or a diamond.
  • the fingerprint recognition area 23 may be a plurality of separate sensor areas, and in other embodiments may be a single sensor area; when a design with multiple sensor areas is used, it may be designed to require multiple fingers simultaneously Recognized by the fingerprint sensor can unlock the screen desktop.
  • the functions of the foldable display panel are the same as those of the non-foldable display panel.
  • the smart device first senses that the user opens the foldable display panel through the pressure-sensitive sensor, that is, the beginning of the user using the device, generates an on signal to turn on the screen power, so that the fingerprint recognition area 23 of the effective display area 21 of the display panel emits light, and displays the fingerprint
  • the location of the recognition area 23 guides the user to touch the fingerprint recognition area 23 to achieve the purpose of unlocking the screen desktop.
  • the effective display area 21 of the display panel can start normal display and is used for the user to use the touch function to operate the device.
  • the pressure sensing function of the device can also be sensed at different pressure levels in accordance with conventional practices.
  • the present invention also provides a corresponding operation method, time-sharing operation touch, pressure sensing and fingerprint Identify these three technical functions, mainly including: sensing the start of the user's use of the device through the pressure-sensitive sensor; the display panel displays the fingerprint recognition area to guide the user to unlock the screen desktop through the fingerprint recognition sensor; after unlocking the desktop, the user starts using the touch sensor Touch function; the specific operation method can be understood with reference to Figure 2 and Figure 4.
  • the smart device when the user has not started using the smart device, for example, the smart device is in the state of breathing, it needs to sense the start of the user's use of the device.
  • the pressure sensor integrated on the display panel can be used to detect whether the user has touched or bent the display panel.
  • the device judges that the user starts to use the device;
  • the fingerprint recognition area of the display panel can emit light or prompt in a similar manner to guide the user to use the finger Fingerprint touches the fingerprint recognition sensor in the fingerprint recognition area to perform fingerprint recognition induction to achieve the purpose of unlocking the screen desktop; then, after unlocking the screen desktop, the display panel can display the application of the smart device normally, and the user can use the touch sensor to display The panel performs touch operation.
  • the organic light emitting diode display panel and its operating method of the present invention fully realize the integrated design of the three major sensors of touch, pressure sensing and fingerprint recognition, especially with the development of flexible organic light emitting diode display technology, the integration of the sensor function of the present invention is dynamic
  • the design of the foldable display panel provides an ergonomic and modern aesthetic solution.
  • the organic light emitting diode display panel may be a non-folding display panel or a foldable display panel;
  • the touch sensor may be a resistive or capacitive touch sensor;
  • the capacitive touch sensor may It is a self-contained or mutual-capacity touch sensor;
  • the pressure sensor can be a resistive or capacitive pressure sensor;
  • the fingerprint recognition sensor can be an optical, capacitive or ultrasonic fingerprint recognition sensor.
  • FIG. 5 it is a schematic diagram of an integrated distribution of a capacitive fingerprint recognition sensor and a mutual-capacitance touch sensor according to yet another preferred embodiment of the present invention.
  • the organic light-emitting diode display panel of this further preferred embodiment can generally refer to FIG. 1 or FIG. 4.
  • the position of the fingerprint recognition area 33 is located in the lower part of the effective display area, close to the lower frame, and the touch sensor is covered with the entire effective display Area.
  • This further preferred embodiment is specific in that the design of the touch sensor in the entire effective display area including the fingerprint recognition area 33 adopts a mutual-capacity design, which is a mutual-capacitance touch sensor and is located in the fingerprint recognition area
  • the fingerprint recognition sensor of 33 is a capacitive fingerprint recognition sensor.
  • the mutual capacitance touch sensor and the capacitive fingerprint recognition sensor within the range of the fingerprint recognition area 33 share the sensor metal pads 34 and 37, and the common sensor metal pads 34 and 37 are connected by the first enable signal EN controls the first peripheral circuit 35 of the switch, on the other hand is connected by the second enable signal
  • the second peripheral circuit 36 controlling the switch the first peripheral circuit 35 is used to connect the common sensor metal pads 34, 37 to the touch emission signal source and the touch reception signal source, and the second peripheral circuit 36 is used to connect the common sensor
  • the metal pads 34 and 37 are connected to the fingerprint identification transmitting signal source and the fingerprint identification receiving signal source, so that the first enable signal EN and the second enable signal with different timings can be passed Control the time-division multiplexing of fingerprint recognition and touch functions.
  • the sensor metal pad 34 and the sensor metal pad 37 are used as two different electrodes of the mutual capacitance touch sensor, on the other hand, the sensor metal pad 34 and the sensor metal pad 37 are also used as capacitive fingerprint recognition sensors, respectively Two different electrodes; the sensor metal pads 34 and the sensor metal pads 37 can be arranged in an array with each other, the sensor metal pads 34 can be arranged in the horizontal direction, and the sensor metal pads 37 can be arranged in the vertical direction.
  • the density required for touch sensors is low, while the density required for fingerprint recognition sensors is high. Therefore, the density of the fingerprint recognition sensor within the range of the fingerprint recognition area 33 may be N times the density of the corresponding touch sensor, N may be a natural number, and N may be 3 or other multiples.
  • the switches of the first peripheral circuit 35 and the second peripheral circuit 36 can be controlled to realize time-division multiplexing of the two functions.
  • the thin film transistor switch (touch function switch) in the first peripheral circuit 35 is turned on, and the thin film transistor switch (fingerprint recognition function switch) in the second peripheral circuit 36 is turned off.
  • (Horizontal direction) ⁇ 3 (vertical direction) sensor metal pads 34 and 37 are connected to the same pair of touch transmit signal source (TX1 ⁇ 3) and touch receive signal source (RX1 ⁇ 3) to realize touch function;
  • the thin film transistor switch (touch function switch) in the first peripheral circuit 35 is turned off, the thin film transistor switch (fingerprint recognition function switch) in the second peripheral circuit 36 is turned on, and each sensor metal pad 34 and 37 are respectively connected to different fingerprint identification transmitting signal sources (F-TX1 ⁇ 9) and fingerprint identification receiving signal sources (F-RX1 ⁇ 9), so that the fingerprints can be detected by induction alone.
  • the pressure sensor can be located near the edge of the effective display area of the display panel.
  • a smart device such as smart is picked up
  • the mobile phone touch the edge of the effective display area.
  • the pressure sensor senses, it sends a signal to the driver chip, and then the driver chip communicates with the motherboard chip, or sends a signal to the motherboard chip to inform the user that the mobile phone is about to be used.
  • the motherboard turns on the power of the phone.
  • the display panel displays patterns of different color screens in the fingerprint recognition area, and guides the user to unlock the fingerprint, so that subsequent operations can be performed.
  • the organic light emitting diode display panel of the present invention can be implemented in various ways for the integration of the pressure sensing sensor.
  • the touch sensor of the organic light-emitting diode display panel of the present invention may adopt an in-cell type, an on-cell type (On-TFE), or an add-on type (Add-on), and the corresponding specific pressure sensing sensor may use a resistive type and Capacitive can be.
  • FIG. 6 it is a schematic diagram of an integrated distribution of a pressure sensor according to another preferred embodiment of the present invention.
  • a pressure sensitive sensor can be integrated on the effective display area 41 of the organic light emitting diode display panel.
  • a resistive pressure sensor 43 is placed in the middle of 45 or 46.
  • the leads of the pressure-sensitive sensors 42 and/or 43 are preferably in the first metal layer (M1) of the touch panel (Touch Panel), and the pressure-sensitive sensors 42 and/or 43 are placed in the first metal layer (M1) or On the second metal layer (M2);
  • the pressure sensor can be directly deposited on the upper part of the touch/fingerprint recognition sensor, and the resistive/capacitive pressure sensor can be used.
  • a pressure sensitive sensor 44 can be integrated on the frame 40 of the organic light emitting diode display panel.
  • the pressure-sensing sensor 44 can adopt an in-line design, and the resistance-type pressure-sensing sensor 44 can be fabricated on the polysilicon layer (poly), the first gate layer (GE1), the second gate layer (GE2), and the source and drain Layer (SD) or anode (Anode) layer;
  • the pressure-sensing sensor 44 can be designed in an on-type (On-TFE) design.
  • the resistive/capacitive pressure-sensing sensor 44 can be fabricated on a thin film package (TFE);
  • the pressure sensing sensor 44 can adopt an add-on design.
  • the resistive/capacitive pressure sensing sensor 44 can be deposited directly above the touch sensor/fingerprint recognition sensor.
  • the organic light emitting diode display panel and its operating method of the present invention propose a product that combines the three technologies of touch, pressure sensing and fingerprint recognition; in particular, in the flexible OLED display technology, a comprehensive application of this technology is designed.
  • the three technical functions of the flexible OLED display panel operating in time-sharing have realized the design of a new concept of OLED display panel, which provides a solution for the development of dynamic foldable display panel design in accordance with ergonomics and modern aesthetics.

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Abstract

本发明涉及一种有机发光二极管显示面板及其运行方法。该有机发光二极管显示面板包括集成于所述显示面板中的触控传感器、压力感应传感器和指纹识别传感器；所述触控传感器分布于显示面板的整个有效显示区，所述压力感应传感器分布于靠近有效显示区边沿的位置，所述指纹识别传感器分布在有效显示区靠下方的位置。本发明还提供了一种有机发光二极管显示面板的运行方法。本发明的有机发光二极管显示面板及其运行方法提出了将触控、压力感应和指纹识别这三种技术融合于一体的产品。

Description

有机发光二极管显示面板及其运行方法 技术领域
本发明涉及显示技术领域，尤其涉及一种有机发光二极管显示面板及其运行方法。
背景技术
随着手机全面屏的需求越来越旺，触控、压力感应和指纹识别技术应用越来越广泛。手机、平板、电视甚至工业用的控制面板也越来越多采纳这些技术。
几乎所有智能手机均具备触控功能，而更高端的智能手机会具备压力感应功能，甚至具备指纹识别功能。也有个别高端智能旗舰手机会同时具备触控、压力感应和指纹识别这三种功能，但是，无一例外，都是采用外挂式解决方案。也就是采用外加模组，贴合后使用，会占用手机空间，对实现轻薄化智能手机有反作用。目前还没有一款设计是将这三种或者其中两种功能集成为一体使用，或者全部集成于面板上的设计。
比如触控功能，可以是通过贴覆一层有机膜层实现，该膜层通过采用物理气相沉积(PVD)和刻蚀等工艺沉积金属电极和导线而形成触控电极，有自容式和互容式两类模式；或者特别是在有机发光二极管(OLED)显示器件设计制作过程中，直接在封装层上设计制作触控电极实现触控功能；再或者在盖板玻璃内侧制作触控电极实现触控功能。
一般地，传统的指纹识别是采用电容式指纹识别技术，在手机的下边框内设置指纹识别按钮模组，按钮模组中具备电容感应电极阵列，根据电容对指纹的凹凸变化发生反应，每个电容充放电实现指纹识别。近年来，光学式指纹识别技术和超声波式指纹识别技术逐渐流行起来，丰富了指纹识别的解决方案，但是，依然是通过外挂指纹识别模组来实现。
而压力感应技术的主流也是在显示模组背面贴覆感应膜材，然后通过膜材的电路连接到主板上，通过主板进行控制操作来实现压力感应功能。近年来，也有将压力感应功能内嵌于模组两侧的非有效显示区，或者有效显示区来实现的技术开发案例。
但是，将触控、压力感应和指纹识别三种传感技术融合在一起的技术设计，还很少见。
随着OLED显示技术的兴起，特别是柔性可弯折OLED技术的蓬勃发 展，各种新的传感器(sensor)产品技术概念也应该随之产生。
发明内容
因此，本发明的目的在于提供一种有机发光二极管显示面板及其运行方法，实现一种新型概念的OLED显示面板，综合集成运用触控、压力感应和指纹识别三种技术功能。
为实现上述目的，本发明提供了一种有机发光二极管显示面板，包括集成于所述显示面板中的触控传感器、压力感应传感器和指纹识别传感器；所述触控传感器分布于显示面板的整个有效显示区，所述压力感应传感器分布于靠近有效显示区边沿的位置，所述指纹识别传感器分布在有效显示区靠下方的位置。
其中，所述触控传感器为电阻式或电容式触控传感器。
其中，所述电容式触控传感器为自容式或互容式触控传感器。
其中，所述压力感应传感器为电阻式或者电容式压力感应传感器。
其中，所述指纹识别传感器为光学式、电容式或者超声波式指纹识别传感器。
其中，所述有机发光二极管显示面板为非折叠显示面板或者可折叠显示面板。
其中，所述指纹识别传感器分布于指纹识别区域中，所述指纹识别区域为单独的一个传感器区域或者包括多个分开的传感器区域。
其中，所述传感器区域的形状为圆形或者多边形。
其中，所述指纹识别传感器为电容式指纹识别传感器，所述触控传感器为互容式触控传感器，处于所述指纹识别区域范围的所述互容式触控传感器与所述电容式指纹识别传感器共用传感器金属垫，共用的传感器金属垫连接由第一使能信号控制开关的第一外围电路，共用的传感器金属垫还连接由第二使能信号控制开关的第二外围电路，通过不同时序的第一使能信号和第二使能信号控制指纹识别功能和触控功能分时复用。
其中，所述触控传感器为内嵌式、外嵌式或者外挂式触控传感器。
本发明还提供了一种如前所述的有机发光二极管显示面板的运行方法，包括：
通过压力感应传感器来感知用户使用设备的开始；
显示面板显示指纹识别区域以引导用户通过指纹识别传感器解锁屏幕桌面；
解锁桌面后，用户通过触控传感器开始使用触控功能。
综上，本发明的有机发光二极管显示面板及其运行方法提出了将触控、压力感应和指纹识别这三种技术融合于一体的产品；特别是在柔性OLED显示技术中，设计出综合运用这三种技术功能分时运行的柔性OLED显示面板，实现了一种新型概念的OLED显示面板的设计，为发展动态可折叠显示面板设计符合人体工程学和现代美学提供了方案。
附图说明
下面结合附图，通过对本发明的具体实施方式详细描述，将使本发明的技术方案及其他有益效果显而易见。
附图中，
图1为本发明一较佳实施例的非折叠显示面板中三种传感器的集成分布示意图；
图2为本发明一较佳实施例的非折叠显示面板的运行方法示意图；
图3为本发明有机发光二极管显示面板的运行方法的流程图；
图4为本发明又一较佳实施例的可折叠显示面板中三种传感器的集成分布及运行方法示意图；
图5为本发明再一较佳实施例的电容式指纹识别传感器与互容式触控传感器集成分布示意图；
图6为本发明另一较佳实施例的压力感应传感器的集成分布示意图。
具体实施方式
本发明提出了将触控、压力感应和指纹识别这三种技术融合于一体的有机发光二极管显示面板，主要包括集成于所述显示面板中的触控传感器、压力感应传感器和指纹识别传感器；所述触控传感器分布于显示面板的整个有效显示区，所述压力感应传感器分布于靠近有效显示区边沿的位置，所述指纹识别传感器分布在有效显示区靠下方的位置
参见图1，其为本发明一较佳实施例的非折叠显示面板中三种传感器的集成分布示意图，对于目前主流的非折叠的有机发光二极管显示面板有效显示区(AA)11，触控传感器(图未示)分布于整个有效显示区11，压力感应传感器12分布在靠近有效显示区11边沿的位置，而指纹识别传感器(图未示)分布在有效显示区11靠下方的位置，处于指纹识别区域13内。由于显示面板为立体结构，因此图1仅用于展示三种传感器在显示面板中的平面位置分布关系。
在其他实施方式中，压力感应传感器也可以分布在有效显示区以外， 即显示面板上下左右边框的区域，指纹识别区域也可以分布在有效显示区边沿的任意处，特别是下边沿处，因为这样指纹识别区域离驱动芯片较近，利于导线走线的制程，沉积刻蚀的导线长度较短，工艺上容易实现。
参见图2，其为本发明一较佳实施例的非折叠显示面板的运行方法示意图。该较佳实施例非折叠显示面板的功能的使用方式是分时运行，首先，智能设备，例如智能手机或者平板电脑通过压力感应传感器来感知用户使用设备的开始，手部按压显示面板表面，产生一个开启信号打开屏幕电源，使得显示面板有效显示区11的指纹识别区域13发出亮光，显示指纹识别区域13的位置，引导用户将手指触碰指纹识别区域13，达到解锁屏幕桌面的目的，解锁桌面后显示面板有效显示区11即可开始正常显示并且供用户使用触控功能，操作设备中的各种智能设备应用程序(app)，此后，设备的压力感应功能也可以按照常规做法，来实现对不同压力等级的感应。
参见图4，其为本发明又一较佳实施例的可折叠显示面板中三种传感器的集成分布及运行方法示意图。对于可折叠有机发光二极管显示面板的有效显示区21，各种类型的传感器的分布位置与非折叠显示面板的分布类似。触控传感器(图未示)分布于整个有效显示区21，压力感应传感器22分布在靠近有效显示区21边沿的位置，而指纹识别传感器(图未示)分布在有效显示区21靠下方的位置，处于指纹识别区域23内。
如图4所示，压力感应传感器22分布于有效显示区21靠近边沿处，在边沿以内，在其他的实施例中也可以在边沿以外。指纹识别传感器位于有效显示区21靠下的指纹识别区域23中，指纹识别区域23可以位于有效显示区21边沿的任意位置；如图4所示，指纹识别区域23是圆形的区域，在其他的实施例中也可以是矩形、三角形或者菱形等多边形区域。如图4所示，指纹识别区域23可以是多个分开的传感器区域，在其他实施例中可以是单独的一个传感器区域；当采用多个传感器区域的设计时，可以设计为需要多个手指同时被指纹传感器识别才能解锁屏幕桌面。
可折叠显示面板的功能使用方法跟非折叠显示面板一致。使用时，智能设备首先通过压力感应传感器来感知用户打开可折叠显示面板即用户使用设备的开始，产生一个开启信号打开屏幕电源，使得显示面板有效显示区21的指纹识别区域23发出亮光，显示指纹识别区域23的位置，引导用户将手指触碰指纹识别区域23，达到解锁屏幕桌面的目的，解锁桌面后显示面板有效显示区21即可开始正常显示并且供用户使用触控功能，操作设备中的各种智能设备应用程序，此后，设备的压力感应功能也可以按照常规做法，来实现对不同压力等级的感应。
参见图3，其为本发明有机发光二极管显示面板的运行方法的流程图，基于本发明的有机发光二极管显示面板，本发明还提供了相应的运行方法，分时运行触控、压力感应和指纹识别这三种技术功能，主要包括：通过压力感应传感器来感知用户使用设备的开始；显示面板显示指纹识别区域以引导用户通过指纹识别传感器解锁屏幕桌面；解锁桌面后，用户通过触控传感器开始使用触控功能；具体运行方法可结合图2及图4进行理解。首先，用户尚未开始使用智能设备时，例如智能设备处于息屏状态，需要感知用户使用设备的开始，可以通过显示面板上集成的压力感应传感器感知用户是否对显示面板进行了触碰或者弯折等操作，如果压力感应传感器感知到了相应操作，则设备判断用户开始使用设备；接下来，按照设备预设程序，可以使显示面板的指纹识别区域发出亮光或者以类似的方式进行提示，引导用户用手指指纹触碰指纹识别区域的指纹识别传感器，进行指纹识别感应以达到解锁屏幕桌面的目的；然后，解锁屏幕桌面后显示面板即可以正常显示智能设备的应用程序，同时用户可以利用触控传感器对显示面板进行触控操作。
本发明有机发光二极管显示面板及其运行方法充分实现了触控、压力感应和指纹识别三大传感器集成的设计，特别是随着柔性有机发光二极管显示技术的发展，本发明的传感器功能集成为动态可折叠显示面板的设计提供了符合人体工程学和现代美学的方案。本发明有机发光二极管显示面板及其运行方法中，有机发光二极管显示面板可以为非折叠显示面板或者可折叠显示面板；触控传感器可以为电阻式或电容式触控传感器；电容式触控传感器可以为自容式或互容式触控传感器；压力感应传感器可以为电阻式或者电容式压力感应传感器；指纹识别传感器可以为光学式、电容式或者超声波式指纹识别传感器。以下对本发明实现触控、压力感应和指纹识别三者集成的具体方法做进一步简要阐述。
如图5所示，其为本发明再一较佳实施例的电容式指纹识别传感器与互容式触控传感器集成分布示意图。该再一较佳实施例的有机发光二极管显示面板总体上可以参考图1或图4，指纹识别区域33的位置位于有效显示区靠下的部位，接近下边框，触控传感器布满整个有效显示区。该再一较佳实施例的具体之处在于，包括指纹识别区域33在内的整个有效显示区范围的触控传感器设计均采用互容式设计，为互容式触控传感器，处于指纹识别区域33的指纹识别传感器为电容式指纹识别传感器。处于所述指纹识别区域33范围内的互容式触控传感器与电容式指纹识别传感器共用传感器金属垫(pad)34、37，共用的传感器金属垫34、37一方面连接由第一 使能信号EN控制开关的第一外围电路35，另一方面连接由第二使能信号
Figure PCTCN2019075502-appb-000001
控制开关的第二外围电路36，第一外围电路35用于将共用的传感器金属垫34、37连接至触控发射信号源和触控接收信号源，第二外围电路36用于将共用的传感器金属垫34、37连接至指纹识别发射信号源和指纹识别接收信号源，从而可以通过不同时序的第一使能信号EN和第二使能信号
Figure PCTCN2019075502-appb-000002
控制指纹识别功能和触控功能分时复用。一方面，传感器金属垫34与传感器金属垫37分别用作互容式触控传感器的不同的两个电极，另一方面，传感器金属垫34与传感器金属垫37也分别用作电容式指纹识别传感器的不同的两个电极；传感器金属垫34与传感器金属垫37可以相互交错呈阵列排布，传感器金属垫34可以沿横向排列，传感器金属垫37可以沿纵向排列。
本领域技术人员都知道，触控传感器所需密度较低，而指纹识别传感器所需的密度很高。因此，在指纹识别区域33范围内指纹识别传感器密度可能是对应的触控传感器密度的N倍，N可以为自然数，N可以为3或者其他倍数。在此以N＝3为例进行说明，即纹识别区域33范围内指纹传感器的数量是触控传感器的3倍。如图5所示，在有效显示区的外围，通过不同时序的第一使能信号EN和第二使能信号
Figure PCTCN2019075502-appb-000003
可以控制第一外围电路35和第二外围电路36的开关，实现两种功能分时复用。
1.触控功能运行时段，第一外围电路35中的薄膜晶体管开关(触控功能开关)导通，第二外围电路36中的薄膜晶体管开关(指纹识别功能开关)关闭，此时每3(水平方向)×3(垂直方向)个传感器金属垫34、37均接入同一对触控发射信号源(TX1～3)和触控接收信号源(RX1～3)，实现触控功能；
2.指纹识别功能运行时段，第一外围电路35中的薄膜晶体管开关(触控功能开关)关闭，第二外围电路36中的薄膜晶体管开关(指纹识别功能开关)导通，每一个传感器金属垫34、37分别接入不同的的指纹识别发射信号源(F-TX1～9)和指纹识别接收信号源(F-RX1～9)，从而可以单独感应识别指纹。
在此再一较佳实施例中，参考图1和图4，压力感应传感器可位于显示面板有效显示区的靠近边缘的位置，当用手打开弯折的显示面板，或者拿起智能设备如智能手机的时候，按压触碰有效显示区边缘，压力感应传感器感应后，发送信号给驱动芯片，然后驱动芯片与主板芯片通信，或者发 送信号给主板芯片，告知用户即将使用手机，主板打开手机电源，使得显示面板在指纹识别区域显示出不同颜色画面的图案，引导用户进行指纹解锁，进而可以进行后续操作。
本发明的有机发光二极管显示面板对于压力感应传感器的集成可以采取多种方式实现。例如，本发明的有机发光二极管显示面板的触控传感器可以采用内嵌式、外嵌式(On-TFE)或者外挂式(Add-on)，而相应的具体的压力感应传感器可以采用电阻式和电容式均可。如图6所示，其为本发明另一较佳实施例的压力感应(Force)传感器的集成分布示意图。
1.可以在有机发光二极管显示面板的有效显示区41上集成压力感应传感器。
①有效显示区41使用外嵌式触控设计时，要么在每个触控传感器金属垫45或46的中间区域开辟一个空间放置电阻式的压力感应传感器42，要么在四个触控传感器金属垫45或46的中间放置一个电阻式的压力感应传感器43。压力感应传感器42和/或43的引线最好处于触控面板(Touch Panel)的第一层金属层(M1)，而压力感应传感器42和/或43放置于第一层金属层(M1)或者第二层金属层(M2)上；
②有效显示区41使用外挂式触控设计时，那么压力感应传感器直接在触控/指纹识别传感器的上部沉积形成即可，电阻式/电容式的压力感应传感器均可。
2.可以在有机发光二极管显示面板的边框40上集成压力感应传感器44。
①压力感应传感器44可以采用内嵌式设计，可以将电阻式的压力感应传感器44制作在多晶硅层(poly)、第一栅极层(GE1)、第二栅极层(GE2)、源漏极层(SD)或阳极(Anode)层；
②压力感应传感器44可以采用外嵌式(On-TFE)设计，可以将电阻式/电容式的压力感应传感器44制作在薄膜封装(TFE)上；
③压力感应传感器44可以采用外挂式(Add-on)设计，在触控面板中，可以将电阻式/电容式的压力感应传感器44直接在触控传感器/指纹识别传感器的上方沉积形成。
综上，本发明的有机发光二极管显示面板及其运行方法提出了将触控、压力感应和指纹识别这三种技术融合于一体的产品；特别是在柔性OLED显示技术中，设计出综合运用这三种技术功能分时运行的柔性OLED显示面板，实现了一种新型概念的OLED显示面板的设计，为发展动态可折叠显示面板设计符合人体工程学和现代美学提供了方案。
以上所述，对于本领域的普通技术人员来说，可以根据本发明的技术方案和技术构思作出其他各种相应的改变和变形，而所有这些改变和变形都应属于本发明后附的权利要求的保护范围。

Claims (11)

  1. 一种有机发光二极管显示面板，包括集成于所述显示面板中的触控传感器、压力感应传感器和指纹识别传感器；所述触控传感器分布于显示面板的整个有效显示区，所述压力感应传感器分布于靠近有效显示区边沿的位置，所述指纹识别传感器分布在有效显示区靠下方的位置。
  2. 如权利要求1所述的有机发光二极管显示面板，其中，所述触控传感器为电阻式或电容式触控传感器。
  3. 如权利要求2所述的有机发光二极管显示面板，其中，所述电容式触控传感器为自容式或互容式触控传感器。
  4. 如权利要求1所述的有机发光二极管显示面板，其中，所述压力感应传感器为电阻式或者电容式压力感应传感器。
  5. 如权利要求1所述的有机发光二极管显示面板，其中，所述指纹识别传感器为光学式、电容式或者超声波式指纹识别传感器。
  6. 如权利要求1所述的有机发光二极管显示面板，为非折叠显示面板或者可折叠显示面板。
  7. 如权利要求1所述的有机发光二极管显示面板，其中，所述指纹识别传感器分布于指纹识别区域中，所述指纹识别区域为单独的一个传感器区域或者包括多个分开的传感器区域。
  8. 如权利要求7所述的有机发光二极管显示面板，其中，所述传感器区域的形状为圆形或者多边形。
  9. 如权利要求7所述的有机发光二极管显示面板，其中，所述指纹识别传感器为电容式指纹识别传感器，所述触控传感器为互容式触控传感器，处于所述指纹识别区域范围的所述互容式触控传感器与所述电容式指纹识别传感器共用传感器金属垫，共用的传感器金属垫连接由第一使能信号控制开关的第一外围电路，共用的传感器金属垫还连接由第二使能信号控制开关的第二外围电路，通过不同时序的第一使能信号和第二使能信号控制指纹识别功能和触控功能分时复用。
  10. 如权利要求1所述的有机发光二极管显示面板，其中，所述触控传感器为内嵌式、外嵌式或者外挂式触控传感器。
  11. 一种如权利要求1所述的有机发光二极管显示面板的运行方法，包括：
    通过压力感应传感器来感知用户使用设备的开始；
    显示面板显示指纹识别区域以引导用户通过指纹识别传感器解锁屏幕桌面；
    解锁桌面后，用户通过触控传感器开始使用触控功能。
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