WO2020211811A1 - 触控面板及其制备方法和显示装置 - Google Patents
触控面板及其制备方法和显示装置 Download PDFInfo
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- WO2020211811A1 WO2020211811A1 PCT/CN2020/085079 CN2020085079W WO2020211811A1 WO 2020211811 A1 WO2020211811 A1 WO 2020211811A1 CN 2020085079 W CN2020085079 W CN 2020085079W WO 2020211811 A1 WO2020211811 A1 WO 2020211811A1
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- touch detection
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- fingerprint recognition
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- 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
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1306—Sensors therefor non-optical, e.g. ultrasonic or capacitive sensing
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0443—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a single layer of sensing electrodes
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1318—Sensors therefor using electro-optical elements or layers, e.g. electroluminescent sensing
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- 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]
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04111—Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
- G06F3/04164—Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/04—Structural and physical details of display devices
- G09G2300/0421—Structural details of the set of electrodes
- G09G2300/0426—Layout of electrodes and connections
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2354/00—Aspects of interface with display user
Definitions
- More and more functional devices are integrated under the screen of the mobile terminal.
- fingerprint recognition for example, capacitive fingerprint recognition
- ultrasonic fingerprint recognition requires a separate module, which is placed under the screen or integrated on the back of the mobile phone, which will increase the frame or thickness of the mobile terminal; while the realization of ultrasonic fingerprint recognition and optical fingerprint recognition It is also necessary to add an independent acoustic wave generation and echo recognition module and a reflected light wave reading module, which increases the integration difficulty and cost of the mobile terminal.
- the touch detection electrodes in each of the touch detection units are self-capacitive touch detection electrodes; the self-capacitive touch detection electrodes in the plurality of touch detection units and the multiple The first signal transmission lines have a one-to-one correspondence.
- a planarization layer is provided between the display function layer and the signal wiring layer.
- the light-emitting device includes a current-driven light-emitting device.
- FIG. 12 is a flowchart of a manufacturing method of a touch panel according to an embodiment of the present disclosure.
- FIG. 1 is a schematic top view of a touch panel according to an embodiment of the present disclosure
- FIG. 2 is a schematic cross-sectional view taken along the line A-A' in FIG. 1.
- the touch panel includes: a substrate 1, a plurality of touch detection units 4, a plurality of fingerprint identification units 5, and a signal wiring layer.
- the substrate 1 includes a touch detection area 2 and a fingerprint recognition area 3.
- a plurality of touch detection units 4 are located on the substrate 1 and located in the touch detection area 2, and a plurality of fingerprint recognition units 5 are located on the substrate 1 and located in the fingerprint Identify area 3.
- the signal wiring layer is located on the same side of the substrate 1 as the touch detection electrode 6 and the fingerprint recognition electrode 7, and the signal wiring layer includes a plurality of first signal transmission lines 8 and a plurality of second signal transmission lines 9.
- Each touch detection electrode 6 is electrically connected to the corresponding first signal transmission line 8, and the touch detection signal is transmitted through the corresponding first signal transmission line 8, and each fingerprint recognition electrode 7 is electrically connected to the corresponding second signal transmission line 9.
- the fingerprint identification signal is transmitted through the corresponding second signal transmission line 9.
- each touch detection electrode 6 corresponds to a first signal transmission line 8
- each fingerprint recognition electrode 7 corresponds to a second signal transmission line 9.
- the touch detection unit 4 is a self-capacitive touch detection unit 4.
- the touch detection electrode 6 in each touch detection unit 4 is a self-capacitive touch detection electrode 6.
- the plurality of self-capacitive touch detection electrodes 6 correspond to the plurality of first signal transmission lines 8 one-to-one.
- a self-capacitance is formed between the self-capacitive touch detection electrode 6 and the ground.
- a coupling capacitor is formed between the touch object and the self-capacitive touch detection electrode 6, and the formed coupling capacitor is with the self-capacitance
- the capacitance superposition increases the self-capacitance at the self-capacitive touch detection electrode 6.
- Mutual capacitive touch scanning electrodes located in the same row share the same touch scanning signal transmission line 802, and mutual capacitive touch sensing electrodes located in the same column share the same touch sensing signal transmission line 801, which can greatly reduce the number of The number of signal lines to be laid out.
- Fig. 6 is a top view of a fingerprint recognition area according to an embodiment of the present disclosure.
- each self-capacitive fingerprint identification unit 5 in FIG. 6 not only includes a fingerprint identification electrode 7, but also includes a switching transistor T1.
- the fingerprint recognition electrode 7 is electrically connected to the corresponding second signal transmission line 9 through the switch transistor T1
- the control electrode of the switch transistor T1 is connected to the fingerprint scanning drive line 12 corresponding to the fingerprint recognition unit 5, and the switch transistor T1
- the first pole of is connected to the second signal transmission line 9 corresponding to the fingerprint identification unit 5, and the second pole of the switch transistor T1 is connected to the fingerprint identification electrode 7 of the pattern identification unit 5.
- the fingerprint identification units 5 are arranged in an array.
- the fingerprint identification units 5 located in the same row are electrically connected to the same fingerprint scanning drive line 12, and the fingerprint identification electrodes located in different rows correspond to different fingerprint scanning drive lines.
- the fingerprint recognition units 5 in the same column are electrically connected to the same second signal transmission line 9, and the fingerprint recognition electrodes in different columns correspond to different second signal transmission lines.
- the size of the touch detection unit 4 can be made larger than the size of the fingerprint recognition unit 5, that is, the size of the touch detection electrode 6
- the size may be larger than the size of the fingerprint recognition electrode 7.
- the size of the touch detection unit 4 may not be larger than 5 mm ⁇ 5 mm, and the size of the fingerprint identification unit 5 may not be larger than 90 um ⁇ 90 um.
- the pixel drive circuit includes a signal writing transistor.
- the gate of the switching transistor is arranged on the same layer as the gate of the signal writing transistor.
- the active layer of the switching transistor is arranged on the same layer as the active layer of the signal writing transistor.
- the electrode and the second electrode are arranged in the same layer as the first electrode and the second electrode of the signal writing transistor.
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- Multimedia (AREA)
- Computer Hardware Design (AREA)
- Image Input (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Position Input By Displaying (AREA)
Abstract
Description
Claims (20)
- 一种触控面板,包括:衬底,其包括触控检测区域和指纹识别区域;多个触控检测单元,其位于所述衬底上并位于所述触控检测区域中,每个所述触控检测单元包括触控检测电极;多个指纹识别单元,其位于所述衬底上并位于所述指纹识别区域中,每个所述指纹识别单元包括指纹识别电极,所述指纹识别电极与所述触控检测电极同层设置;信号走线层,其与所述触控检测电极和所述指纹识别电极位于所述衬底的同一侧,并且包括多条第一信号传输线和多条第二信号传输线,其中,所述触控检测电极电连接到对应的所述第一信号传输线,并通过对应的所述第一信号传输线传递触控检测信号;并且所述指纹识别电极电连接到对应的所述第二信号传输线,并通过对应的所述第二信号传输线传递指纹识别信号。
- 根据权利要求1所述的触控面板,其中,每个所述触控检测单元中的触控检测电极为自电容式触控检测电极;所述多个触控检测单元中的自电容式触控检测电极与所述多条第一信号传输线一一对应。
- 根据权利要求1所述的触控面板,其中,每个所述触控检测单元中的触控检测电极包括第一触控检测电极和第二触控检测电极;所述第一触控检测电极包括分别位于所述第二触控检测电极两侧的第一子电极和第二子电极,所述第一子电极和所述第二子电极通过桥线电连接,所述桥线与所述第二触控检测电极绝缘;所述第一触控检测电极和所述第二触控检测电极中之一为互电容式触控扫描电极,另一为互电容式触控感应电极。
- 根据权利要求3所述的触控面板,其中,所述多个触控检测单元按阵列排布,位于同一行的互电容式触控扫描电极彼此电连接,位于同一列的互电容式触控感应电极彼此电连接;所述多条第一信号传输线包括多条触控扫描信号传输线和多条触控感应信号传输线,位于同一行的互电容式触控扫描电极电连接到同一条所述触控扫描信号传输线,位于不同行的互电容式触控扫描电极电连接到不同的触控扫描信号传输线,位于同一列的互电容式触控感应电极电连接到同一条所述触控感应信号传输线,位于不同列的互电容式触控感应电极电连接到不同的触控感应信号传输线。
- 根据权利要求4所述的触控面板,其中,所述桥线、所述多条触控扫描信号传输线、和所述多条触控感应信号传输线同层设置。
- 根据权利要求1至5中任一项所述的触控面板,其中,每个所述指纹识别单元中的所述指纹识别电极为自电容式指纹识别电极;所述多个指纹识别单元中的自电容式指纹识别电极与所述多条第二信号传输线一一对应。
- 根据权利要求1至6中任一项所述的触控面板,其中,每个所述指纹识别单元还包括开关晶体管;在每个所述指纹识别单元中,所述指纹识别电极通过所述开关晶体管与对应的所述第二信号传输线电连接,所述开关晶体管的栅极与所述指纹识别电极所对应的指纹扫描驱动线连接,所述开关晶体管的第一极与所述指纹识别电极所对应的所述第二信号传输线连接,所述开关晶体管的第二极与所述指纹识别电极连接;所述多个指纹识别单元按阵列排布,位于同一行的指纹识别电极对应同一条指纹扫描驱动线,位于不同行的指纹识别电极对应不同的指纹扫描驱动线,位于同一列的指纹识别电极对应同一条第二信号传输线,位于不同列的指纹识别电极对应不同的第二信号传输线。
- 根据权利要求1所述的触控面板,还包括显示功能层,其中,所述触控检测电极、所述指纹识别电极和所述信号走线层均位于所述显示功能层的靠近所述衬底的一侧;所述显示功能层包括多条栅线、多条数据线和多个像素单元,每个像素单元对应一条栅线和一条数据线,所述像素单元包括像素驱动电路和发光器件,所述像素驱动电路被配置为驱动所述发光器件发光,所述像素驱动电路包括信号写入晶体管,所述信号写入晶体管的栅极与所述栅线连接,所述信号写入晶体管的第一极与所述数据线连接。
- 根据权利要求8所述的触控面板,其中,所述多条数据线在所述信号走线层上的正投影覆盖所述多条第一信号传输线和多条所述第二信号传输线。
- 根据权利要求8所述的触控面板,其中,每个所述指纹识别单元还包括开关晶体管;在每个所述指纹识别单元中,所述指纹识别电极通过所述开关晶体管与对应的所述第二信号传输线电连接,所述开关晶体管的栅极与所述指纹识别电极所对应的指纹扫描驱动线连接,所述开关晶体管的第一极与所述指纹识别电极所对应的所述第二信号传输线连接,所述开关晶体管的第二极与所述指纹识别电极连接;所述多个指纹识别单元按阵列排布,位于同一行的指纹识别电极对应同一条指纹扫描驱动线,位于不同行的指纹识别电极对应不同的指纹扫描驱动线,位于同一列的指纹识别电极对应同一条第二信号传输线,位于不同列的指纹识别电极对应不同的第二信号传输线;所述开关晶体管的栅极与所述信号写入晶体管的栅极同层设置,所述开关晶体管的有源层与所述信号写入晶体管的有源层同层设置,所述开关晶体管的第一极和第二极以及所述信号写入晶体管的第一极和第二极同层设置。
- 根据权利要求10所述的触控面板,其中,由所述多条栅线中的至少部分栅线来实施与所述多个指纹识别单元的指纹识别电极对应的指纹扫描驱动线。
- 根据权利要求8至11中任一项所述的触控面板,其中,在所述显示功能层与所述信号走线层之间设置有平坦化层。
- 根据权利要求8至12中任一项所述的触控面板,其中,所述发光器件包括电流驱动型发光器件。
- 根据权利要求1至13中任一项所述的触控面板,其中,所述信号走线层位于所述触控检测电极和所述指纹识别电极所处的层的远离所述衬底的一侧。
- 根据权利要求1至14中任一项所述的触控面板,其中,所述触控检测电极的尺寸大于所述指纹识别电极的尺寸。
- 一种触控面板的制备方法,包括:提供衬底,其中,所述衬底包括触控检测区域和指纹识别区域;在所述触控检测区域中的所述衬底上形成多个触控检测单元,并且在所述指纹识别区域中的所述衬底上形成多个指纹识别单元,其中,每个所述触控检测单元包括触控检测电极,每个所述指纹识别单元包括指纹识别电极,所述指纹识别电极与所述触控检测电极同层设置;在所述衬底上形成信号走线层,其中,所述信号走线层包括多条第一信号传输线和多条第二信号传输线,所述触控检测电极电连接到对应的所述第一信号传输线,并通过对应的所述第一信号传输线传递触控检测信号,并且所述指纹识别电极电连接到对应的所述第二信号传输线,并通过对应的所述第二信号传输线传递指纹识别信号。
- 根据权利要求16所述的触控面板的制备方法,其中,在形成所述多个触控检测单元和所述多个指纹识别单元之后形成所述信号走线层。
- 根据权利要求16或17所述的触控面板的制备方法,还包括:在所述衬底上形成显示功能层,其中,所述显示功能层包括多条栅线、多条数据线和多个像素单元,每个像素单元对应一条栅线和一条数据线,所述像素单元包括像素驱动电路和发光器件,所述像素驱动电路被配置为驱动所述发光器件发光,所述像素驱动电路包括信号写入晶体管,所述信号写入晶体管的栅极与所述栅线连接,所述信号写入晶体管的第一极与所述数据线连接。
- 根据权利要求18所述的触控面板的制备方法,其中,在所述衬底上形成显示功能层,包括:通过晶体管制备工艺同时形成所述像素驱动电路和开关晶体管,其中,所述指纹识别电极通过所述开关晶体管与对应的所述第二信号传输线电连接,所述开关晶体管的栅极与所述信号写入晶体管的栅极同层设置,所述开关晶体管的有源层与所述信号写入晶体管的有源层同层设置,所述开关晶体管的第一极和第二极以及所述信号写入晶体管的第一极和第二极同层设置;通过发光器件制备工艺形成所述发光器件。
- 一种显示装置,包括根据权利要求1至15中任一项所述的触控面板。
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