WO2021253492A1 - 显示模组 - Google Patents

显示模组 Download PDF

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Publication number
WO2021253492A1
WO2021253492A1 PCT/CN2020/099357 CN2020099357W WO2021253492A1 WO 2021253492 A1 WO2021253492 A1 WO 2021253492A1 CN 2020099357 W CN2020099357 W CN 2020099357W WO 2021253492 A1 WO2021253492 A1 WO 2021253492A1
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WO
WIPO (PCT)
Prior art keywords
touch
electrode
electrically connected
signal
short
Prior art date
Application number
PCT/CN2020/099357
Other languages
English (en)
French (fr)
Inventor
葛腾飞
戴其兵
李文齐
Original Assignee
武汉华星光电半导体显示技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 武汉华星光电半导体显示技术有限公司 filed Critical 武汉华星光电半导体显示技术有限公司
Priority to US17/054,696 priority Critical patent/US20220187950A1/en
Publication of WO2021253492A1 publication Critical patent/WO2021253492A1/zh

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Classifications

    • 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
    • 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
    • G06F3/0412—Digitisers structurally integrated in a display
    • 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
    • G06F3/0445—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
    • 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
    • G06V40/1306—Sensors therefor non-optical, e.g. ultrasonic or capacitive sensing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026—Details of the structure or mounting of specific components
    • H04M1/0266—Details of the structure or mounting of specific components for a display module assembly

Definitions

  • This application relates to the field of display technology, in particular to a display module.
  • fingerprint recognition technology has also been continuously developed.
  • the existing fingerprint recognition module is generally placed under the display screen, so that the display area where the fingerprint recognition module is located is a touch dead zone, and the touch function of this area cannot be realized.
  • the present application provides a display module to solve the technical problem that the display area where the fingerprint recognition module of the display screen is located is a touch dead zone, and the touch function cannot be realized in this area.
  • the present application provides a display module, which includes a touch display area, the touch display area is provided with a touch structure layer, the touch structure layer includes a plurality of first touch electrodes and a plurality of second touch Electrode, the display module includes:
  • a fingerprint structure layer the fingerprint structure layer is integrated on the touch structure layer, the fingerprint structure layer includes a plurality of first fingerprint recognition electrodes and a plurality of second fingerprint recognition electrodes, and the first fingerprint recognition electrodes are driving Electrode, the second fingerprint recognition electrode is a sensing electrode;
  • a short-circuit unit includes at least one first short-circuit circuit and at least one second short-circuit circuit, the first short-circuit circuit is used to short-circuit at least two of the first fingerprint identification electrodes to form a The first touch electrode, and the second short circuit is used to short at least two of the second fingerprint recognition electrodes to form the second touch electrode; and
  • the touch control chip includes at least one first touch signal terminal and at least one second touch signal terminal.
  • the fingerprint structure layer includes a plurality of first electrode traces, and the first electrode traces are electrically connected to one of the first fingerprint identification electrodes in a one-to-one correspondence;
  • the first short circuit includes at least one first control signal line and a plurality of first switching transistors, each of the first switching transistors includes a gate, a source, and a drain.
  • the gate is electrically connected to the corresponding first control signal line, and the source and drain of each first switch tube are electrically connected to a first electrode wiring in a one-to-one correspondence.
  • the fingerprint structure layer includes a plurality of second electrode traces, and the second electrode traces are electrically connected to a second fingerprint identification electrode in a one-to-one correspondence;
  • the second short circuit includes at least one second control signal line and a plurality of second switch tubes, each of the second switch tubes includes a gate, a source, and a drain.
  • the gate is electrically connected to the corresponding second control signal line, and the source and drain of each second switch tube are electrically connected to a second electrode wiring in a one-to-one correspondence.
  • the short-circuit unit includes a signal control module, and the output end of the signal control module is electrically connected to the first control signal line;
  • the first control signal line is electrically connected to the second control signal line.
  • the short-circuit unit includes two signal control modules, and the number of the first control signal line and the number of the second control signal line are both one;
  • the output terminal of one signal control module is electrically connected to the first control signal line, and the output terminal of the other signal control module is electrically connected to the second control signal line.
  • the first switch tube is a P-type transistor or an N-type transistor
  • the second switch tube is a P-type transistor or an N-type transistor.
  • the touch structure layer further includes at least one first touch signal wiring and at least one second touch signal wiring, and the first touch signal wiring corresponds to one electrical circuit.
  • the first touch signal wiring corresponds to one electrical circuit.
  • the second touch signal traces are electrically connected to one of the second touch electrodes in a one-to-one correspondence;
  • the first touch signal terminal is electrically connected to an end of the first touch signal trace away from the first short circuit
  • the second touch signal terminal is electrically connected to the second touch The signal trace is away from one end of the second short circuit.
  • the first touch signal terminal is a touch drive signal output terminal
  • the second touch signal terminal is a touch sensing signal receiving terminal
  • the display module further includes a fingerprint recognition control chip, and the fingerprint recognition control chip includes a plurality of first fingerprint recognition signal terminals and a plurality of second fingerprint recognition signal terminals;
  • the first fingerprint recognition signal terminal is electrically connected to an end of the first electrode trace away from the first fingerprint recognition electrode in a one-to-one correspondence
  • the second fingerprint recognition signal terminal is electrically connected to a one of the first electrode in a one-to-one correspondence.
  • the second electrode traces away from one end of the second fingerprint identification electrode.
  • the present application provides a display module, which includes a touch display area, the touch display area is provided with a touch structure layer, the touch structure layer includes a plurality of first touch electrodes and a plurality of second touch Control electrode, the display module includes:
  • a fingerprint structure layer the fingerprint structure layer being integrated on the touch structure layer, the fingerprint structure layer including a plurality of first fingerprint identification electrodes and a plurality of second fingerprint identification electrodes;
  • a short-circuit unit includes at least one first short-circuit circuit and at least one second short-circuit circuit, the first short-circuit circuit is used to short-circuit at least two of the first fingerprint identification electrodes to form a The first touch electrode and the second short circuit are used to short at least two of the second fingerprint identification electrodes to form the second touch electrode.
  • the fingerprint structure layer includes a plurality of first electrode traces, and the first electrode traces are electrically connected to one of the first fingerprint identification electrodes in a one-to-one correspondence;
  • the first short circuit includes at least one first control signal line and a plurality of first switching transistors, each of the first switching transistors includes a gate, a source, and a drain.
  • the gate is electrically connected to the corresponding first control signal line, and the source and drain of each first switch tube are electrically connected to a first electrode wiring in a one-to-one correspondence.
  • the fingerprint structure layer includes a plurality of second electrode traces, and the second electrode traces are electrically connected to a second fingerprint identification electrode in a one-to-one correspondence;
  • the second short circuit includes at least one second control signal line and a plurality of second switch tubes, each of the second switch tubes includes a gate, a source, and a drain.
  • the gate is electrically connected to the corresponding second control signal line, and the source and drain of each second switch tube are electrically connected to a second electrode wiring in a one-to-one correspondence.
  • the short-circuit unit includes a signal control module, and the output end of the signal control module is electrically connected to the first control signal line;
  • the first control signal line is electrically connected to the second control signal line.
  • the short-circuit unit includes two signal control modules, and the number of the first control signal line and the number of the second control signal line are both one;
  • the output terminal of one signal control module is electrically connected to the first control signal line, and the output terminal of the other signal control module is electrically connected to the second control signal line.
  • the first switch tube is a P-type transistor or an N-type transistor
  • the second switch tube is a P-type transistor or an N-type transistor.
  • the display module further includes a touch control chip, and the touch control chip includes at least one first touch signal terminal and at least one second touch signal terminal;
  • the touch structure layer further includes at least one first touch signal trace and at least one second touch signal trace, and the first touch signal trace is electrically connected to the first touch signal in a one-to-one correspondence.
  • Control electrodes, the second touch signal traces are electrically connected to one of the second touch electrodes in a one-to-one correspondence;
  • the first touch signal terminal is electrically connected to an end of the first touch signal trace away from the first short circuit
  • the second touch signal terminal is electrically connected to the second touch The signal trace is away from one end of the second short circuit.
  • the first touch signal terminal is a touch drive signal output terminal
  • the second touch signal terminal is a touch sensing signal receiving terminal
  • the display module further includes a fingerprint recognition control chip, and the fingerprint recognition control chip includes a plurality of first fingerprint recognition signal terminals and a plurality of second fingerprint recognition signal terminals;
  • the first fingerprint recognition signal terminal is electrically connected to an end of the first electrode trace away from the first fingerprint recognition electrode in a one-to-one correspondence
  • the second fingerprint recognition signal terminal is electrically connected to a one of the first electrode in a one-to-one correspondence.
  • the second electrode traces away from one end of the second fingerprint identification electrode.
  • the first fingerprint recognition electrode is a driving electrode
  • the second fingerprint recognition electrode is a sensing electrode
  • the display module provided by the present application multiplexes the fingerprint recognition electrode in the fingerprint recognition structure layer as a touch electrode through a shorting unit.
  • the first fingerprint recognition electrode and the second fingerprint recognition electrode work together to realize the fingerprint recognition function; when the shorting unit is in a normal working state, the first touch electrode and the second touch electrode work together to realize the touch function.
  • This application effectively realizes the touch function of the display area where the fingerprint recognition module is located without affecting the fingerprint recognition function, and solves the technical problem that the touch function cannot be realized in the touch dead zone of the display screen.
  • FIG. 1 is a schematic diagram of a planar structure of a display module provided by an embodiment of the present application
  • Fig. 2 is a schematic cross-sectional structure view taken along the line AA' in Fig. 1;
  • FIG. 3 is a schematic structural diagram of a fingerprint recognition area in a display module provided by an embodiment of the present application.
  • FIG. 4 is a schematic diagram of a first structure of a shorting unit in a display module provided by an embodiment of the present application
  • FIG. 5 is a schematic diagram of a second structure of the short-circuit unit in the display module provided by an embodiment of the present application.
  • FIG. 6 is a timing diagram of the short-circuit unit in the display module provided by the embodiment of the present application.
  • first and second are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with “first” and “second” may explicitly or implicitly include one or more of the features. In the description of the present application, "a plurality of" means two or more than two, unless otherwise specifically defined.
  • connection should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected or integrally connected; it can be mechanically connected, it can be electrical connection or it can communicate with each other; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal communication of two components or the interaction of two components relation.
  • connection should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected or integrally connected; it can be mechanically connected, it can be electrical connection or it can communicate with each other; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal communication of two components or the interaction of two components relation.
  • the "above” or “below” of the first feature of the second feature may include direct contact between the first and second features, or may include the first and second features Not in direct contact but through other features between them.
  • “above”, “above” and “above” the second feature of the first feature include the first feature being directly above and obliquely above the second feature, or merely indicating that the level of the first feature is higher than that of the second feature.
  • the “below”, “below” and “below” of the second feature of the first feature include the first feature directly below and obliquely below the second feature, or it simply means that the level of the first feature is smaller than the second feature.
  • the P-type transistors and N-type transistors used in this application can be thin film transistors or other field effect transistors. Since the source and drain of the transistors used here are symmetrical, the source and drain are Interchangeable. In the embodiments of the present application, in order to distinguish the two poles of the transistor other than the gate, one of the poles is called the source and the other is called the drain. According to the form in the figure, it is stipulated that the middle end of the transistor is the gate, the signal input end is the source, and the signal output end is the drain.
  • the display module 100 provided by the embodiment of the present application includes a touch display area 10A and a non-display area 10B.
  • the touch display area 10A is provided with a touch structure layer 11.
  • the touch structure layer 11 includes a plurality of first touch electrodes 111 and a plurality of second touch electrodes 112.
  • the display module 100 further includes a fingerprint structure layer 12, a shorting unit 13, a touch control chip 15 and a fingerprint identification control chip 16.
  • the fingerprint structure layer 12 is integrated on the touch structure layer 11.
  • the fingerprint structure layer 12 includes a plurality of first fingerprint recognition electrodes 121 and a plurality of second fingerprint recognition electrodes 122.
  • the short circuit unit 13 includes at least one first short circuit 131 and at least one second short circuit 132.
  • the first short circuit 131 is used to short the at least two first fingerprint identification electrodes 121 to form the first touch electrode 111.
  • the second short circuit 132 is used to short the at least two second fingerprint identification electrodes 122 to form the second touch electrode 112.
  • the display module provided by the embodiment of the present application multiplexes the fingerprint recognition electrode in the fingerprint structure layer 12 as a touch electrode through the shorting unit 13.
  • the first fingerprint recognition electrode 121 and the second fingerprint recognition electrode 122 work together to realize the fingerprint recognition function;
  • the first touch electrode 111 and the second touch electrode 112 work together to realize the touch function.
  • This application effectively realizes the touch function of the display area where the fingerprint recognition module is located without affecting the fingerprint recognition function, and solves the technical problem that the touch function cannot be realized in the touch dead zone of the display screen.
  • the display module 100 in this embodiment further includes a display panel 10 and an insulating layer 14 arranged in sequence, as shown in FIG. 2.
  • the arrangement of the insulating layer 14 can prevent signal crosstalk between the electrodes in the touch structure layer 11 and other circuits on the display panel 10.
  • the display panel 10 may be a liquid crystal display panel or an organic light-emitting diode display panel. The specific structure of the display panel 10 can refer to the prior art, which will not be repeated here.
  • the display module 100 in the present application also includes other film structures (not marked in the figure) such as a backplane and an optical adhesive layer, which will not be repeated here.
  • the touch structure layer 11 in this application can be provided on the display panel 10 or integrated into the display panel 10.
  • This embodiment only takes the touch structure layer 11 provided on the display panel 10 as an example.
  • the specific structure of the touch structure layer 11 in this embodiment is only an example, but it should not be understood as a limitation of the present application.
  • the fingerprint structure layer 12 is integrated on the touch structure layer 11, and the specific integration method of the fingerprint structure layer 12 can refer to the prior art, which will not be repeated here.
  • first fingerprint recognition electrode 121 and the second fingerprint recognition electrode 122 in this application can be arranged in the same layer or in different layers. In this embodiment, only the first fingerprint recognition electrode 121 and the second fingerprint recognition electrode are used. 122 Same layer setting is taken as an example for description, but it is not limited to this.
  • the patterns of the first fingerprint recognition electrode 121 and the second fingerprint recognition electrode 122 in this application can be diamond, strip or square, etc. This embodiment only uses the first fingerprint recognition electrode 121 and the second fingerprint recognition electrode 122
  • the patterns are all rhombuses as an example, but they are not limited to this.
  • the first fingerprint recognition electrode 121 is a driving electrode
  • the second fingerprint recognition electrode 122 is a sensing electrode.
  • the fingerprint structure layer 12 further includes a plurality of bridges 123, and the bridges 123 are used to connect the adjacent first fingerprint identification electrodes 121.
  • the first fingerprint recognition electrode 121 is a sensing electrode
  • the second fingerprint recognition electrode 122 is a driving electrode, which will not be repeated here.
  • the area where the fingerprint structure layer 12 is located is the fingerprint identification area 10C, as shown in FIG. 1.
  • the fingerprint identification area 10C can be arranged above, below or in other positions of the display panel 10. This embodiment only takes the fingerprint identification area 10C arranged below the display panel 10 as an example for description, but it is not limited to this.
  • the shorting unit 13 is disposed on a part of the display panel 10 in the non-display area 10B, such as a flexible circuit board (not marked in the figure) or other peripheral circuits.
  • the specific position of the short-circuit unit 13 can also be set according to the actual situation, which will not be repeated here.
  • first short circuit 131 in the present application can short two or more first fingerprint identification electrodes 121 to form the first touch electrode 111.
  • the second short circuit 132 short-circuits two or more second fingerprint recognition electrodes 122 to form the second touch electrode 112.
  • the specific number of the first short circuit 131 and the second short circuit 132 respectively shorting the first fingerprint identification electrode 121 and the second fingerprint identification electrode 122 can be set according to the actual situation, which is not limited in this application.
  • the fingerprint structure layer 12 further includes a plurality of first electrode traces 121a and a plurality of second electrode traces 122a.
  • the first electrode trace 121a is electrically connected to a first fingerprint identification electrode 121 in a one-to-one correspondence.
  • the first short circuit 131 includes at least one first control signal line 131a and a plurality of first switch tubes 131b.
  • Each first switch tube 131b includes a gate, a source, and a drain.
  • the gate of each first switch tube 131b is electrically connected to the corresponding first control signal line 131a.
  • the source and drain of each first switch tube 131b are electrically connected to a first electrode wiring 121a in a one-to-one correspondence.
  • the second electrode trace 122a is electrically connected to a second fingerprint identification electrode 122 in a one-to-one correspondence.
  • the second short circuit 132 includes at least one second control signal line 132a and a plurality of second switch tubes 132b.
  • Each second switch tube 132b includes a gate, a source, and a drain.
  • the gate of each second switch tube 132b is electrically connected to the corresponding second control signal line 132a.
  • the source and drain of each second switch tube 132b are electrically connected to a second electrode wiring 122a in a one-to-one correspondence.
  • the first switch tube is a P-type transistor or an N-type transistor.
  • the second switch tube is a P-type transistor or an N-type transistor.
  • the first switch tube 131b and the second switch tube 132b are both P-type transistors.
  • the number of the first short circuit 131 is two. In some embodiments, the number of the first short circuit 131 is one or more. The number of the first short circuit 131 can be selected according to the arrangement of the first electrode wiring 121a, which is not limited in this application.
  • the number of the second short circuit 132 in this application can be one, two or more. This embodiment only takes the number of the second short circuit 132 as an example for description, but it is not limited to this.
  • the short-circuit unit 13 includes a signal control module 133.
  • the output terminal of the signal control module 133 is electrically connected to the first control signal line 131a.
  • the first control signal line 131a is electrically connected to the second control signal line 132a.
  • the signal control module 133 is used to input control signals to the gates of the first switch tube 131b and the second switch tube 132b through the first control signal line 131a and the second control signal line 132a, respectively, so as to control the first control signal line 131a and the second control signal line 132a.
  • the switching tube 131b and the second switching tube 132b are turned on and off. The above arrangement is beneficial to simplifying the circuit structure and saving process cost by using a signal control module 133 to input control signals to the short-circuit unit 13.
  • the short-circuit unit 13 may also include two signal control modules, as shown in FIG. 5.
  • FIG. 5 is a schematic diagram of a second structure of the short-circuit unit in the display module provided by an embodiment of the application. Specifically, the number of the first control signal line 131a and the number of the second control signal line 132a are both one.
  • the output terminal of a signal control module 133 is electrically connected to the first control signal line 131a.
  • the output terminal of the other signal control module 134 is electrically connected to the second control signal line 132a.
  • one signal control module 133 is defined as the first signal control module 133, and the other signal control module 134 is defined as the second signal control module 134.
  • the first signal control module 133 is used to input a control signal to the gate of the first switch tube 131b through the first control signal line 131a, so as to control the turning on and off of the first switch tube 131b.
  • the second signal control module 134 is used to input a control signal to the gate of the second switch tube 132b through the second control signal line 132a, so as to control the turning on and off of the second switch tube 132b.
  • the above configuration uses the first signal control module 133 and the second signal control module 134 to input control signals to the first short circuit 131 and the second short circuit 132, respectively, and connects the first control signal line 131a and the second control signal line
  • the number of 132a is set to one, thereby helping to reduce the delay effect of the control signal and avoid affecting the transmission of the control signal.
  • a control signal line is shared between the first short circuit 131 and the second short circuit 132, which can also improve the stability of the first short circuit 131 and the second short circuit 132, thereby ensuring the short circuit Unit 13 work efficiency.
  • the signal control module is provided in the short-circuit unit 13.
  • the signal control module can also be integrated in the touch control chip 15 or the fingerprint recognition control chip 16. This arrangement is beneficial to simplify the process and save the process cost.
  • the touch control chip 15 includes at least one first touch signal terminal and at least one second touch signal terminal.
  • the touch structure layer 11 further includes at least one first touch signal wiring 111 a and at least one second touch signal wiring 112 a.
  • the first touch signal wiring 111a is electrically connected to a first touch electrode 111 in a one-to-one correspondence.
  • the second touch signal wiring 112a is electrically connected to a second touch electrode 112 in a one-to-one correspondence.
  • the first touch signal terminal is electrically connected to an end of the first touch signal wiring 111 a away from the first short circuit 131.
  • the second touch signal terminal is electrically connected to an end of the second touch signal wiring 112 a away from the second short circuit 132.
  • the first touch signal terminal is a touch drive signal output terminal.
  • the second touch signal terminal is the touch sensing signal receiving terminal.
  • the first touch signal terminal is a touch sensing signal receiving terminal.
  • the second touch signal terminal is a touch drive signal output terminal.
  • the fingerprint identification control chip 16 includes a plurality of first fingerprint identification signal terminals and a plurality of second fingerprint identification signal terminals.
  • the first fingerprint identification signal terminal is electrically connected to an end of a first electrode wiring 121 a away from the first fingerprint identification electrode 121 in a one-to-one correspondence.
  • the second fingerprint identification signal terminal is electrically connected to an end of the second electrode wiring 122 a away from the second fingerprint identification electrode 122 in a one-to-one correspondence.
  • the first fingerprint recognition signal terminal is a fingerprint recognition driving signal output terminal
  • the second fingerprint recognition signal terminal is a fingerprint recognition sensing signal receiving terminal
  • touch control chip 15 and the fingerprint identification control chip 16 in the present application can be arranged on a flexible circuit board (not marked in the figure), and will not be repeated here.
  • FIG. 6 is a signal timing diagram of the short-circuit unit in the display module provided by an embodiment of the application.
  • the signal timing diagram of the short-circuit unit 13 in this embodiment only uses the short-circuit unit 13 in FIG. 4 as an example for description. According to other structures of the short-circuit unit 13, the signal timing in this embodiment can also be obtained. picture.
  • TP-EN is a control signal.
  • the signal control module 133 inputs the control signal TP-EN to the gates of the first switching tube 131b and the second switching tube 132b through the first control signal line 131a and the second control signal line 132a, respectively, to control the first switching tube 131b and the second switching tube 131b.
  • the second switch tube 132b is turned on and off to control the working state of the short-circuit unit 13.
  • control signal TP-EN when the control signal TP-EN is the high-level signal VGH, the first switch tube 131b and the second switch tube 132b are turned off, and the shorting unit 13 is in the off state; when the control signal TP-EN is the low-level signal VGL At this time, the first switch tube 131b and the second switch tube 132b are turned on, and the short-circuit unit 13 is in a normal working state.
  • the fingerprint recognition function is turned on, and the touch function is turned off.
  • the first signal control module 133 inputs the high potential signal VGH to the gates of the first switch tube 131b and the second switch tube 132b through the first control signal line 131a, and the first switch tube 131b and the second switch tube 132b are turned off.
  • the short-circuit unit 13 is in a disconnected state.
  • the fingerprint recognition control chip 16 inputs the fingerprint recognition drive signal FS-TX to the first fingerprint recognition electrode 121 through the first fingerprint recognition signal terminal, and then the second fingerprint recognition electrode 122 receives the fingerprint recognition sensing signal FS- through the second fingerprint recognition signal terminal. RX, at this time, the capacitor formed by the first fingerprint recognition electrode 121 and the second fingerprint recognition electrode 122 is charged, so that the fingerprint recognition function is completed through the cooperative work of the first fingerprint recognition electrode 121 and the second fingerprint recognition electrode 122.
  • the fingerprint recognition function is turned off and the touch function is turned on.
  • the fingerprint recognition control chip 16 suspends the pins of the first electrode wiring 121a and the second electrode wiring 122a, and the fingerprint recognition function is turned off. Then, the first signal control module 133 inputs a low-potential signal VGL to the gates of the first switch tube 131b and the second switch tube 132b through the first control signal line 131a, the first switch tube 131b and the second switch tube 132b are turned on and short The connection unit 13 is in a normal working state.
  • the line of the first electrode trace 121a is short-circuited to form the first touch electrode 111
  • the line of the second electrode trace 122a is short-circuited to form the second touch electrode 112.
  • the first electrode trace 121a in each first short circuit 131 is short-circuited to form a first touch electrode 111 (drive electrode)
  • the second electrode trace in each second short circuit 132 is 122a is short-circuited to form a second touch electrode 112 (sensing electrode).
  • the touch function is turned on, the touch control chip 15 inputs the touch drive signal TP-TX to the first touch electrode 111 through the first touch signal terminal, and then the second touch electrode 112 passes the second touch signal
  • the terminal receives the touch sensing signal TP-RX.
  • the capacitance formed by the first touch electrode 111 and the second touch electrode 112 is charged, so that the first touch electrode 111 and the second touch electrode 112 work together Complete the touch function.
  • the display module provided by the present application multiplexes the fingerprint recognition electrode in the fingerprint recognition structure layer as a touch electrode through a shorting unit, and when the shorting unit is in a disconnected state, The first fingerprint recognition electrode and the second fingerprint recognition electrode work together to realize the fingerprint recognition function; when the shorting unit is in a normal working state, the first touch electrode and the second touch electrode work together to realize the touch function.
  • This application effectively realizes the touch function of the display area where the fingerprint recognition module is located without affecting the fingerprint recognition function, and solves the technical problem that the touch function cannot be realized in the touch dead zone of the display screen.

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Abstract

本申请提供一种显示模组，其包括第一触控电极、第二触控电极、指纹结构层和短接单元，指纹结构层包括第一指纹识别电极和第二指纹识别电极；短接单元包括至少一第一短接电路和至少一第二短接电路，第一短接电路将至少两个第一指纹识别电极短接成第一触控电极，第二短接电路将至少两个第二指纹识别电极短接成第二触控电极。

Description

显示模组 技术领域
本申请涉及显示技术领域，具体涉及一种显示模组。
 背景技术
随着显示技术的发展，手机等显示设备逐渐向高屏占比的全面显示方向发展。
 技术问题
随着手机屏占比的不断增加，指纹识别技术也得到不断的发展。为了提高屏占比，现有的指纹识别模块一般置于显示屏下方，使得指纹识别模块所在的显示区域为触控死区，进而导致该区域的触控功能无法实现。
 技术解决方案
本申请提供一种显示模组，以解决因显示屏指纹识别模块所在的显示区域为触控死区，进而导致该区域无法实现触控功能的技术问题。
本申请提供一种显示模组，其包括触控显示区，所述触控显示区设置有触控结构层，所述触控结构层包括多个第一触控电极和多个第二触控电极，所述显示模组包括：
指纹结构层，所述指纹结构层集成在所述触控结构层上，所述指纹结构层包括多个第一指纹识别电极和多个第二指纹识别电极，所述第一指纹识别电极为驱动电极，所述第二指纹识别电极为感应电极；
短接单元，所述短接单元包括至少一第一短接电路和至少一第二短接电路，所述第一短接电路用于将至少两个所述第一指纹识别电极短接形成所述第一触控电极，所述第二短接电路用于将至少两个所述第二指纹识别电极短接形成所述第二触控电极；以及
触控控制芯片，所述触控控制芯片包括至少一第一触控信号端和至少一第二触控信号端。
在本申请的显示模组中，所述指纹结构层包括多个第一电极走线，所述第一电极走线一一对应电性连接于一所述第一指纹识别电极；
所述第一短接电路包括至少一第一控制信号线和多个第一开关管，每一所述第一开关管包括栅极、源极和漏极，每一所述第一开关管的栅极电性连接至对应的所述第一控制信号线，每一所述第一开关管的源极和漏极一一对应电性连接于一所述第一电极走线。
在本申请的显示模组中，所述指纹结构层包括多个第二电极走线，所述第二电极走线一一对应电性连接于一所述第二指纹识别电极；
所述第二短接电路包括至少一第二控制信号线和多个第二开关管，每一所述第二开关管包括栅极、源极和漏极，每一所述第二开关管的栅极电性连接至对应的所述第二控制信号线，每一所述第二开关管的源极和漏极一一对应电性连接于一所述第二电极走线。
在本申请的显示模组中，所述短接单元包括一信号控制模块，所述信号控制模块的输出端电性连接于所述第一控制信号线；
所述第一控制信号线电性连接于所述第二控制信号线。
在本申请的显示模组中，所述短接单元包括两个信号控制模块，所述第一控制信号线和所述第二控制信号线的数量均为一条；
一所述信号控制模块的输出端电性连接于所述第一控制信号线，另一所述信号控制模块的输出端电性连接于所述第二控制信号线。
在本申请的显示模组中，所述第一开关管为P型晶体管或N型晶体管；
所述第二开关管为P型晶体管或N型晶体管。
在本申请的显示模组中，所述触控结构层还包括至少一第一触控信号走线和至少一第二触控信号走线，所述第一触控信号走线一一对应电性连接于一所述第一触控电极，所述第二触控信号走线一一对应电性连接于一所述第二触控电极；
所述第一触控信号端电性连接于所述第一触控信号走线远离所述第一短接电路的一端，所述第二触控信号端电性连接于所述第二触控信号走线远离所述第二短接电路的一端。
在本申请的显示模组中，所述第一触控信号端为触控驱动信号输出端，所述第二触控信号端为触控感应信号接收端。
在本申请的显示模组中，所述显示模组还包括指纹识别控制芯片，所述指纹识别控制芯片包括多个第一指纹识别信号端和多个第二指纹识别信号端；
所述第一指纹识别信号端一一对应电性连接于一所述第一电极走线远离所述第一指纹识别电极的一端，第二指纹识别信号端一一对应电性连接于一所述第二电极走线远离所述第二指纹识别电极的一端。
本申请提供还一种显示模组，其包括触控显示区，所述触控显示区设置有触控结构层，所述触控结构层包括多个第一触控电极和多个第二触控电极，所述显示模组包括：
指纹结构层，所述指纹结构层集成在所述触控结构层上，所述指纹结构层包括多个第一指纹识别电极和多个第二指纹识别电极；以及
短接单元，所述短接单元包括至少一第一短接电路和至少一第二短接电路，所述第一短接电路用于将至少两个所述第一指纹识别电极短接形成所述第一触控电极，所述第二短接电路用于将至少两个所述第二指纹识别电极短接形成所述第二触控电极。
在本申请的显示模组中，所述指纹结构层包括多个第一电极走线，所述第一电极走线一一对应电性连接于一所述第一指纹识别电极；
所述第一短接电路包括至少一第一控制信号线和多个第一开关管，每一所述第一开关管包括栅极、源极和漏极，每一所述第一开关管的栅极电性连接至对应的所述第一控制信号线，每一所述第一开关管的源极和漏极一一对应电性连接于一所述第一电极走线。
在本申请的显示模组中，所述指纹结构层包括多个第二电极走线，所述第二电极走线一一对应电性连接于一所述第二指纹识别电极；
所述第二短接电路包括至少一第二控制信号线和多个第二开关管，每一所述第二开关管包括栅极、源极和漏极，每一所述第二开关管的栅极电性连接至对应的所述第二控制信号线，每一所述第二开关管的源极和漏极一一对应电性连接于一所述第二电极走线。
在本申请的显示模组中，所述短接单元包括一信号控制模块，所述信号控制模块的输出端电性连接于所述第一控制信号线；
所述第一控制信号线电性连接于所述第二控制信号线。
在本申请的显示模组中，所述短接单元包括两个信号控制模块，所述第一控制信号线和所述第二控制信号线的数量均为一条；
一所述信号控制模块的输出端电性连接于所述第一控制信号线，另一所述信号控制模块的输出端电性连接于所述第二控制信号线。
在本申请的显示模组中，所述第一开关管为P型晶体管或N型晶体管；
所述第二开关管为P型晶体管或N型晶体管。
在本申请的显示模组中，所述显示模组还包括触控控制芯片，所述触控控制芯片包括至少一第一触控信号端和至少一第二触控信号端；
所述触控结构层还包括至少一第一触控信号走线和至少一第二触控信号走线，所述第一触控信号走线一一对应电性连接于一所述第一触控电极，所述第二触控信号走线一一对应电性连接于一所述第二触控电极；
所述第一触控信号端电性连接于所述第一触控信号走线远离所述第一短接电路的一端，所述第二触控信号端电性连接于所述第二触控信号走线远离所述第二短接电路的一端。
在本申请的显示模组中，所述第一触控信号端为触控驱动信号输出端，所述第二触控信号端为触控感应信号接收端。
在本申请的显示模组中，所述显示模组还包括指纹识别控制芯片，所述指纹识别控制芯片包括多个第一指纹识别信号端和多个第二指纹识别信号端；
所述第一指纹识别信号端一一对应电性连接于一所述第一电极走线远离所述第一指纹识别电极的一端，第二指纹识别信号端一一对应电性连接于一所述第二电极走线远离所述第二指纹识别电极的一端。
在本申请的显示模组中，所述第一指纹识别电极为驱动电极，所述第二指纹识别电极为感应电极。
 有益效果
相较于现有技术中的显示模组，本申请提供的显示模组通过短接单元将指纹识别结构层中的指纹识别电极复用为触控电极，当短接单元处于断开状态时，第一指纹识别电极和第二指纹识别电极协同工作以实现指纹识别功能；当短接单元处于正常工作状态时，第一触控电极和第二触控电极协同工作以实现触控功能。本申请在不影响指纹识别功能的前提下，有效实现了指纹识别模块所在显示区域的触控功能，解决了显示屏触控死区无法实现触控功能的技术问题。
 附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本申请实施例提供的显示模组的平面结构示意图；
图2是图1中沿AA’线的剖面结构示意图；
图3是本申请实施例提供的显示模组中指纹识别区的结构示意图；
图4是本申请实施例提供的显示模组中短接单元的第一结构示意图；
图5是本申请实施例提供的显示模组中短接单元的第二结构示意图；
图6是本申请实施例提供的显示模组中短接单元的时序图。
 本发明的实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
在本申请的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、“顺时针”、“逆时针”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个所述特征。在本申请的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的限定。
在本申请的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接或可以相互通讯；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
在本申请中，除非另有明确的规定和限定，第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触，也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方，或仅仅表示第一特征水平高度小于第二特征。
下文的公开提供了许多不同的实施方式或例子用来实现本申请的不同结构。为了简化本申请的公开，下文中对特定例子的部件和设置进行描述。当然，它们仅仅为示例，并且目的不在于限制本申请。此外，本申请可以在不同例子中重复参考数字和/或参考字母，这种重复是为了简化和清楚的目的，其本身不指示所讨论各种实施方式和/或设置之间的关系。此外，本申请提供了的各种特定的工艺和材料的例子，但是本领域普通技术人员可以意识到其他工艺的应用和/或其他材料的使用。
需要说明的是，本申请所采用的P型晶体管及N型晶体管可以为薄膜晶体管或其他场效应管，由于这里采用的晶体管的源极、漏极是对称的，所以其源极、漏极是可以互换的。在本申请实施例中，为区分晶体管除栅极之外的两极，将其中一极称为源极，另一极称为漏极。按附图中的形态规定晶体管的中间端为栅极、信号输入端为源极、信号输出端为漏极。
请参阅图1至图5。本申请实施例提供的显示模组100包括触控显示区10A和非显示区10B。触控显示区10A设置有触控结构层11。触控结构层11包括多个第一触控电极111和多个第二触控电极112。显示模组100还包括指纹结构层12、短接单元13、触控控制芯片15和指纹识别控制芯片16。指纹结构层12集成在触控结构层11上。指纹结构层12包括多个第一指纹识别电极121和多个第二指纹识别电极122。短接单元13包括至少一第一短接电路131和至少一第二短接电路132。第一短接电路131用于将至少两个第一指纹识别电极121短接形成第一触控电极111。第二短接电路132用于将至少两个第二指纹识别电极122短接形成第二触控电极112。
由此，本申请实施例提供的显示模组通过短接单元13将指纹结构层12中的指纹识别电极复用为触控电极，当短接单元13处于断开状态时，第一指纹识别电极121和第二指纹识别电极122协同工作以实现指纹识别功能；当短接单元13处于正常工作状态时，第一触控电极111和第二触控电极112协同工作以实现触控功能。本申请在不影响指纹识别功能的前提下，有效实现了指纹识别模块所在显示区域的触控功能，解决了显示屏触控死区无法实现触控功能的技术问题。
可以理解的是，本实施例中的显示模组100还包括依次设置的显示面板10和绝缘层14，如图2所示。其中，绝缘层14的设置可以防止触控结构层11中的电极与显示面板10上的其他电路之间发生信号串扰。另外，显示面板10可以为液晶显示面板，也可以为有机发光二极管显示面板，显示面板10的具体结构可以参照现有技术，在此不再赘述。
此外，本申请中的显示模组100还包括背板以及光学胶层等其他膜层结构（图中未标识），在此不再赘述。
需要说明的是，本申请中的触控结构层11可以设置在显示面板10上，也可以集成在显示面板10中，本实施例仅以触控结构层11设置在显示面板10上为例进行说明，但并不限于此。另外，本实施例中触控结构层11的具体结构仅为示例，但并不能理解为对本申请的限制。
在本申请实施例中，指纹结构层12集成在触控结构层11上，指纹结构层12的具体集成方式可以参照现有技术，在此不再赘述。
需要说明的是，本申请中的第一指纹识别电极121和第二指纹识别电极122可以同层设置，也可以异层设置，本实施例仅以第一指纹识别电极121和第二指纹识别电极122同层设置为例进行说明，但并不限于此。
此外，本申请中的第一指纹识别电极121和第二指纹识别电极122的图案可以为菱形、长条形或方形等，本实施例仅以第一指纹识别电极121和第二指纹识别电极122的图案均为菱形为例进行说明，但并不限于此。
在本申请实施例中，第一指纹识别电极121为驱动电极、第二指纹识别电极122为感应电极。指纹结构层12还包括多个架桥123，架桥123用于连接相邻的第一指纹识别电极121。另外，在一些实施例中，第一指纹识别电极121为感应电极、第二指纹识别电极122为驱动电极，在此不再赘述。
在本申请实施例中，指纹结构层12所在的区域为指纹识别区10C，如图1所示。指纹识别区10C可以设置于显示面板10的上方、下方或其他位置，本实施例仅以指纹识别区10C设置在显示面板10的下方为例进行说明，但并不限于此。
进一步的，在本申请实施例中，短接单元13设置在显示面板10位于非显示区10B的部分上，如设置于柔性电路板（图中未标识）或其他外围电路中。另外，短接单元13的具体位置还可以根据实际情况进行设定，在此不再赘述。
需要说明的是，本申请中的第一短接电路131可以将两个或多个第一指纹识别电极121短接形成第一触控电极111。第二短接电路132将两个或多个第二指纹识别电极122短接形成第二触控电极112。第一短接电路131及第二短接电路132分别短接第一指纹识别电极121和第二指纹识别电极122的具体个数可以根据实际情况进行设定，本申请对此不作限定。
请继续参阅3至图5。在本申请实施例中，指纹结构层12还包括多个第一电极走线121a和多个第二电极走线122a。第一电极走线121a一一对应电性连接于一第一指纹识别电极121。第一短接电路131包括至少一第一控制信号线131a和多个第一开关管131b。每一第一开关管131b包括栅极、源极和漏极。每一第一开关管131b的栅极电性连接至对应的第一控制信号线131a。每一第一开关管131b的源极和漏极一一对应电性连接于一第一电极走线121a。
第二电极走线122a一一对应电性连接于一第二指纹识别电极122。第二短接电路132包括至少一第二控制信号线132a和多个第二开关管132b。每一第二开关管132b包括栅极、源极和漏极。每一第二开关管132b的栅极电性连接至对应的第二控制信号线132a。每一第二开关管132b的源极和漏极一一对应电性连接于一第二电极走线122a。
可选的，第一开关管为P型晶体管或N型晶体管。第二开关管为P型晶体管或N型晶体管。
在本申请实施例中，第一开关管131b和第二开关管132b均为P型晶体管。
进一步的，在本申请实施例中，第一短接电路131的数量为两个。在一些实施例中，第一短接电路131的数量为一个或者多个。第一短接电路131的数量可以根据第一电极走线121a的排布方式进行选择，本申请对此不作限定。
需要说明的是，本申请中第二短接电路132的数量可以为一个、两个或者多个，本实施例仅以第二短接电路132的数量为一个为例进行说明，但并不限于此。
请继续参阅图4，图4为本申请实施例提供的显示模组中短接单元的第一结构示意图。在本申请实施例中，短接单元13包括一信号控制模块133。信号控制模块133的输出端电性连接于第一控制信号线131a。第一控制信号线131a电性连接于第二控制信号线132a。
可以理解的是，信号控制模块133用于通过第一控制信号线131a和第二控制信号线132a分别向第一开关管131b和第二开关管132b的栅极输入控制信号，以此控制第一开关管131b及第二开关管132b的开启和关闭。上述设置通过用一个信号控制模块133向短接单元13输入控制信号，有利于简化电路结构，且能够节约工艺成本。
在本申请实施例中，短接单元13还可以包括两个信号控制模块，如图5所示。其中，图5为本申请实施例提供的显示模组中短接单元的第二结构示意图。具体的，第一控制信号线131a和第二控制信号线132a的数量均为一条。一信号控制模块133的输出端电性连接于第一控制信号线131a。另一信号控制模块134的输出端电性连接于第二控制信号线132a。
需要说明的是，在图5所示的短接单元13中，将一信号控制模块133定义为第一信号控制模块133、另一信号控制模块134定义为第二信号控制模块134。
可以理解的是，第一信号控制模块133用于通过第一控制信号线131a向第一开关管131b的栅极输入控制信号，以此控制第一开关管131b的开启和关闭。第二信号控制模块134用于通过第二控制信号线132a向第二开关管132b的栅极输入控制信号，以此控制第二开关管132b的开启和关闭。
上述设置通过利用第一信号控制模块133和第二信号控制模块134分别向第一短接电路131和第二短接电路132输入控制信号，并将第一控制信号线131a和第二控制信号线132a的数量均设置为一条，进而有利于降低控制信号的延迟效应，避免影响控制信号的传输。此外，第一短接电路131之间以及第二短接电路132之间共用一条控制信号线，还可以提高第一短接电路131和第二短接电路132的稳定性，从而保证了短接单元13工作的高效性。
需要说明的是，在本申请实施例中，信号控制模块设置在短接单元13中。在一些实施例中，信号控制模块还可以集成在触控控制芯片15或者指纹识别控制芯片16中，该设置有利于简化工艺制程，从而节约工艺成本。
进一步的，触控控制芯片15包括至少一第一触控信号端和至少一第二触控信号端。触控结构层11还包括至少一第一触控信号走线111a和至少一第二触控信号走线112a。第一触控信号走线111a一一对应电性连接于一第一触控电极111。第二触控信号走线112a一一对应电性连接于一第二触控电极112。第一触控信号端电性连接于第一触控信号走线111a远离第一短接电路131的一端。第二触控信号端电性连接于第二触控信号走线112a远离第二短接电路132的一端。
在本申请实施例中，第一触控信号端为触控驱动信号输出端。第二触控信号端为触控感应信号接收端。
在一些实施例中，第一触控信号端为触控感应信号接收端。第二触控信号端为触控驱动信号输出端。
进一步的，指纹识别控制芯片16包括多个第一指纹识别信号端和多个第二指纹识别信号端。第一指纹识别信号端一一对应电性连接于一第一电极走线121a远离第一指纹识别电极121的一端。第二指纹识别信号端一一对应电性连接于一第二电极走线122a远离第二指纹识别电极122的一端。
在本申请实施例中，第一指纹识别信号端为指纹识别驱动信号输出端，第二指纹识别信号端为指纹识别感应信号接收端。
需要说明的是，本申请中的触控控制芯片15及指纹识别控制芯片16可以设置在柔性电路板上（图中未标识），在此不再赘述。
请一并参阅图3、图4和图6，其中，图6为本申请实施例提供的显示模组中短接单元的信号时序图。
需要说明的是，本实施例中短接单元13的信号时序图仅以图4中的短接单元13为例进行说明，根据短接单元13的其他结构同样可以得到本实施例中的信号时序图。
另外，在本申请实施例中，TP-EN为控制信号。信号控制模块133通过第一控制信号线131a和第二控制信号线132a分别向第一开关管131b和第二开关管132b的栅极输入控制信号TP-EN，以控制第一开关管131b及第二开关管132b的开启和关闭，从而控制短接单元13的工作状态。其中，当控制信号TP-EN为高电平信号VGH时，第一开关管131b及第二开关管132b关闭，短接单元13处于断开状态；当控制信号TP-EN为低电平信号VGL时，第一开关管131b及第二开关管132b打开，短接单元13处于正常工作状态。
在T1阶段，指纹识别功能开启，触控功能关闭。
具体的，第一信号控制模块133通过第一控制信号线131a向第一开关管131b和第二开关管132b的栅极输入高电位信号VGH，第一开关管131b和第二开关管132b关闭，短接单元13处于断开状态。
指纹识别控制芯片16通过第一指纹识别信号端向第一指纹识别电极121输入指纹识别驱动信号FS-TX，接着，第二指纹识别电极122通过第二指纹识别信号端接收指纹识别感应信号FS-RX，此时第一指纹识别电极121和第二指纹识别电极122形成的电容被充电，从而通过第一指纹识别电极121和第二指纹识别电极122的协同工作完成指纹识别功能。
在T2阶段，指纹识别功能关闭，触控功能开启。
具体的，指纹识别控制芯片16内部将第一电极走线121a和第二电极走线122a的管脚悬空，指纹识别功能关闭。接着，第一信号控制模块133通过第一控制信号线131a向第一开关管131b和第二开关管132b的栅极输入低电位信号VGL，第一开关管131b及第二开关管132b打开，短接单元13处于正常工作状态。
此时，第一电极走线121a的线路被短接形成第一触控电极111，第二电极走线122a的线路被短接形成第二触控电极112。具体的，每一第一短接电路131中的第一电极走线121a被短接形成一第一触控电极111（驱动电极），每一第二短接电路132中的第二电极走线122a被短接形成一第二触控电极112（感应电极）。由此，触控功能开启，触控控制芯片15通过第一触控信号端向第一触控电极111输入触控驱动信号TP-TX，接着，第二触控电极112通过第二触控信号端接收触控感应信号TP-RX，此时，第一触控电极111和第二触控电极112形成的电容被充电，从而通过第一触控电极111和第二触控电极112的协同工作完成触控功能。
相较于现有技术中的显示模组，本申请提供的显示模组通过短接单元将指纹识别结构层中的指纹识别电极复用为触控电极，当短接单元处于断开状态时，第一指纹识别电极和第二指纹识别电极协同工作以实现指纹识别功能；当短接单元处于正常工作状态时，第一触控电极和第二触控电极协同工作以实现触控功能。本申请在不影响指纹识别功能的前提下，有效实现了指纹识别模块所在显示区域的触控功能，解决了显示屏触控死区无法实现触控功能的技术问题。
以上对本申请实施例进行了详细介绍，本文中应用了具体个例对本申请的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本申请的方法及其核心思想；同时，对于本领域的一般技术人员，依据本申请的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本申请的限制。

Claims (19)

  1. 一种显示模组，其包括触控显示区，所述触控显示区设置有触控结构层，所述触控结构层包括多个第一触控电极和多个第二触控电极，其中，所述显示模组包括：
    指纹结构层，所述指纹结构层集成在所述触控结构层上，所述指纹结构层包括多个第一指纹识别电极和多个第二指纹识别电极，所述第一指纹识别电极为驱动电极，所述第二指纹识别电极为感应电极；
    短接单元，所述短接单元包括至少一第一短接电路和至少一第二短接电路，所述第一短接电路用于将至少两个所述第一指纹识别电极短接形成所述第一触控电极，所述第二短接电路用于将至少两个所述第二指纹识别电极短接形成所述第二触控电极；以及
    触控控制芯片，所述触控控制芯片包括至少一第一触控信号端和至少一第二触控信号端。
  2. 根据权利要求1所述的显示模组，其中，所述指纹结构层包括多个第一电极走线，所述第一电极走线一一对应电性连接于一所述第一指纹识别电极；
    所述第一短接电路包括至少一第一控制信号线和多个第一开关管，每一所述第一开关管包括栅极、源极和漏极，每一所述第一开关管的栅极电性连接至对应的所述第一控制信号线，每一所述第一开关管的源极和漏极一一对应电性连接于一所述第一电极走线。
  3. 根据权利要求2所述的显示模组，其中，所述指纹结构层包括多个第二电极走线，所述第二电极走线一一对应电性连接于一所述第二指纹识别电极；
    所述第二短接电路包括至少一第二控制信号线和多个第二开关管，每一所述第二开关管包括栅极、源极和漏极，每一所述第二开关管的栅极电性连接至对应的所述第二控制信号线，每一所述第二开关管的源极和漏极一一对应电性连接于一所述第二电极走线。
  4. 根据权利要求3所述的显示模组，其中，所述短接单元包括一信号控制模块，所述信号控制模块的输出端电性连接于所述第一控制信号线；
    所述第一控制信号线电性连接于所述第二控制信号线。
  5. 根据权利要求3所述的显示模组，其中，所述短接单元包括两个信号控制模块，所述第一控制信号线和所述第二控制信号线的数量均为一条；
    一所述信号控制模块的输出端电性连接于所述第一控制信号线，另一所述信号控制模块的输出端电性连接于所述第二控制信号线。
  6. 根据权利要求3所述的显示模组，其中，所述第一开关管为P型晶体管或N型晶体管；
    所述第二开关管为P型晶体管或N型晶体管。
  7. 根据权利要求1所述的显示模组，其中，所述触控结构层还包括至少一第一触控信号走线和至少一第二触控信号走线，所述第一触控信号走线一一对应电性连接于一所述第一触控电极，所述第二触控信号走线一一对应电性连接于一所述第二触控电极；
    所述第一触控信号端电性连接于所述第一触控信号走线远离所述第一短接电路的一端，所述第二触控信号端电性连接于所述第二触控信号走线远离所述第二短接电路的一端。
  8. 根据权利要求7所述的显示模组，其中，所述第一触控信号端为触控驱动信号输出端，所述第二触控信号端为触控感应信号接收端。
  9. 根据权利要求2所述的显示模组，其中，所述显示模组还包括指纹识别控制芯片，所述指纹识别控制芯片包括多个第一指纹识别信号端和多个第二指纹识别信号端；
    所述第一指纹识别信号端一一对应电性连接于一所述第一电极走线远离所述第一指纹识别电极的一端，第二指纹识别信号端一一对应电性连接于一所述第二电极走线远离所述第二指纹识别电极的一端。
  10. 一种显示模组，其包括触控显示区，所述触控显示区设置有触控结构层，所述触控结构层包括多个第一触控电极和多个第二触控电极，其中，所述显示模组包括：
    指纹结构层，所述指纹结构层集成在所述触控结构层上，所述指纹结构层包括多个第一指纹识别电极和多个第二指纹识别电极；以及
    短接单元，所述短接单元包括至少一第一短接电路和至少一第二短接电路，所述第一短接电路用于将至少两个所述第一指纹识别电极短接形成所述第一触控电极，所述第二短接电路用于将至少两个所述第二指纹识别电极短接形成所述第二触控电极。
  11. 根据权利要求10所述的显示模组，其中，所述指纹结构层包括多个第一电极走线，所述第一电极走线一一对应电性连接于一所述第一指纹识别电极；
    所述第一短接电路包括至少一第一控制信号线和多个第一开关管，每一所述第一开关管包括栅极、源极和漏极，每一所述第一开关管的栅极电性连接至对应的所述第一控制信号线，每一所述第一开关管的源极和漏极一一对应电性连接于一所述第一电极走线。
  12. 根据权利要求11所述的显示模组，其中，所述指纹结构层包括多个第二电极走线，所述第二电极走线一一对应电性连接于一所述第二指纹识别电极；
    所述第二短接电路包括至少一第二控制信号线和多个第二开关管，每一所述第二开关管包括栅极、源极和漏极，每一所述第二开关管的栅极电性连接至对应的所述第二控制信号线，每一所述第二开关管的源极和漏极一一对应电性连接于一所述第二电极走线。
  13. 根据权利要求12所述的显示模组，其中，所述短接单元包括一信号控制模块，所述信号控制模块的输出端电性连接于所述第一控制信号线；
    所述第一控制信号线电性连接于所述第二控制信号线。
  14. 根据权利要求12所述的显示模组，其中，所述短接单元包括两个信号控制模块，所述第一控制信号线和所述第二控制信号线的数量均为一条；
    一所述信号控制模块的输出端电性连接于所述第一控制信号线，另一所述信号控制模块的输出端电性连接于所述第二控制信号线。
  15. 根据权利要求12所述的显示模组，其中，所述第一开关管为P型晶体管或N型晶体管；
    所述第二开关管为P型晶体管或N型晶体管。
  16. 根据权利要求10所述的显示模组，其中，所述显示模组还包括触控控制芯片，所述触控控制芯片包括至少一第一触控信号端和至少一第二触控信号端；
    所述触控结构层还包括至少一第一触控信号走线和至少一第二触控信号走线，所述第一触控信号走线一一对应电性连接于一所述第一触控电极，所述第二触控信号走线一一对应电性连接于一所述第二触控电极；
    所述第一触控信号端电性连接于所述第一触控信号走线远离所述第一短接电路的一端，所述第二触控信号端电性连接于所述第二触控信号走线远离所述第二短接电路的一端。
  17. 根据权利要求16所述的显示模组，其中，所述第一触控信号端为触控驱动信号输出端，所述第二触控信号端为触控感应信号接收端。
  18. 根据权利要求11所述的显示模组，其中，所述显示模组还包括指纹识别控制芯片，所述指纹识别控制芯片包括多个第一指纹识别信号端和多个第二指纹识别信号端；
    所述第一指纹识别信号端一一对应电性连接于一所述第一电极走线远离所述第一指纹识别电极的一端，第二指纹识别信号端一一对应电性连接于一所述第二电极走线远离所述第二指纹识别电极的一端。
  19. 根据权利要求10所述的显示模组，其中，所述第一指纹识别电极为驱动电极，所述第二指纹识别电极为感应电极。
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