CN116627271A - Display module and driving method thereof - Google Patents

Display module and driving method thereof Download PDF

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Publication number
CN116627271A
CN116627271A CN202310601827.7A CN202310601827A CN116627271A CN 116627271 A CN116627271 A CN 116627271A CN 202310601827 A CN202310601827 A CN 202310601827A CN 116627271 A CN116627271 A CN 116627271A
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CN
China
Prior art keywords
conductive layer
display panel
display
electrode
touch
Prior art date
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Pending
Application number
CN202310601827.7A
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Chinese (zh)
Inventor
李园园
薄赜文
郑美珠
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BOE Technology Group Co Ltd
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BOE Technology Group Co Ltd
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Application filed by BOE Technology Group Co Ltd filed Critical BOE Technology Group Co Ltd
Priority to CN202310601827.7A priority Critical patent/CN116627271A/en
Publication of CN116627271A publication Critical patent/CN116627271A/en
Pending legal-status Critical Current

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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
    • G06F3/0412—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
    • G06F3/0416—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
    • 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
    • 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
    • G06F2203/04106—Multi-sensing digitiser, i.e. digitiser using at least two different sensing technologies simultaneously or alternatively, e.g. for detecting pen and finger, for saving power or for improving position detection
    • 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
    • G06F2203/04108—Touchless 2D- digitiser, i.e. digitiser detecting the X/Y position of the input means, finger or stylus, also when it does not touch, but is proximate to the digitiser's interaction surface without distance measurement in the Z direction
    • 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

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

The embodiment of the disclosure provides a display module, which comprises a display panel, a first touch structure and a second touch structure, wherein the first touch structure and the second touch structure are positioned on the display side of the display panel; the orthographic projection of the first touch structure on the display panel is positioned in the display area and used for carrying out contact touch on the display panel; the orthographic projection of the second touch structure on the display panel is positioned at the edge of the display area and used for carrying out non-contact touch on the display panel, and the driving electrode of the first touch structure is multiplexed as the driving electrode of the second touch structure. The display module can realize the non-contact touch function of the display module without increasing the frame size of the display module.

Description

Display module and driving method thereof
Technical Field
The embodiment of the disclosure belongs to the technical field of display, and particularly relates to a display module and a driving method thereof.
Background
In order to improve the human-computer interaction experience, the suspension gesture touch control starts to be focused by the client.
Disclosure of Invention
In a first aspect, embodiments of the present disclosure provide a display module including a display panel, a first touch structure and a second touch structure,
the first touch structure and the second touch structure are positioned on the display side of the display panel,
the display panel is provided with a display area and a frame area, and the frame area is arranged on the periphery of the display area in a surrounding mode;
the orthographic projection of the first touch structure on the display panel is positioned in the display area and is used for carrying out contact touch on the display panel;
the orthographic projection of the second touch structure on the display panel is positioned at the edge of the display area and is used for carrying out non-contact touch on the display panel,
the driving electrode of the first touch structure is multiplexed as the driving electrode of the second touch structure.
In some embodiments, the front projection of the second touch structure on the display panel further extends to the frame area.
In some embodiments, the second touch structure includes at least four first electrode strips,
orthographic projections of the at least four first electrode strips on the display panel are respectively positioned at the peripheral edges of the display area;
each first electrode strip is connected with a first signal line independently.
In some embodiments, the orthographic projections of the at least four first electrode strips on the display panel further extend to the peripheral frame area outside the display area respectively.
In some embodiments, the first touch structure includes a plurality of second electrode bars and a plurality of third electrode bars,
the second electrode strips extend along the first direction, the plurality of second electrode strips are sequentially arranged along the second direction,
the third electrode strips extend along the second direction, the plurality of third electrode strips are sequentially arranged along the first direction,
the first direction and the second direction intersect,
the third electrode strip comprises a body part and a bridging part, and the body part is connected with the bridging part;
the orthographic projection of the bridging part on the display panel is positioned at the crossing position of the second electrode strip and the third electrode strip.
In some embodiments, the display panel comprises a first conductive layer and a second conductive layer, wherein the first conductive layer and the second conductive layer are sequentially overlapped on the display side of the display panel, and an insulating layer is arranged between the first conductive layer and the second conductive layer;
the first conductive layer comprises a pattern of the first electrode strip, a pattern of a part of the second electrode strip, a pattern of a part of the body part and a pattern of the bridging part;
the second conductive layer includes a pattern of the second electrode bars and a pattern of the body portion.
In some embodiments, the display panel comprises a first conductive layer and a second conductive layer, wherein the first conductive layer and the second conductive layer are sequentially overlapped on the display side of the display panel, and an insulating layer is arranged between the first conductive layer and the second conductive layer;
the first conductive layer comprises a pattern of the first electrode strips and a pattern of the bridge portions;
the second conductive layer includes a pattern of the second electrode bars and a pattern of the body portion.
In some embodiments, the display panel comprises a first conductive layer, a second conductive layer and a third conductive layer, wherein the first conductive layer, the second conductive layer and the third conductive layer are sequentially overlapped on the display side of the display panel, and an insulating layer is arranged between any adjacent two of the first conductive layer, the second conductive layer and the third conductive layer;
the first conductive layer includes a pattern of the bridge portion;
the second conductive layer includes a pattern of the second electrode bars and a pattern of the body portion;
the third conductive layer includes a pattern of the first electrode strip.
In some embodiments, the second electrode strip includes a plurality of first subunits, the plurality of first subunits being connected;
the third electrode strip comprises a plurality of second subunits, and the plurality of second subunits are connected;
the orthographic projection area of the first subunit on the display panel, which is positioned at the peripheral edge of the display area, is larger than that of the first subunit on the display panel, which is positioned in the middle area of the display area;
or the orthographic projection area of the second subunit on the display panel, which is positioned at the peripheral edge of the display area, is larger than the orthographic projection area of the second subunit on the display panel, which is positioned in the middle area of the display area.
In some embodiments, the front projection of the first electrode strip on the display panel overlaps with the front projection of 1-3 rows of the first sub-units on the display panel;
the front projection of the first electrode strip on the display panel is overlapped with the front projection of 1-3 rows of the second subunits on the display panel.
In some embodiments, the first electrode strip, the second electrode strip, and the third electrode strip are all grid-like electrodes.
In a second aspect, an embodiment of the present disclosure further provides a driving method of the above display module, where the first touch structure and the second touch structure in the display module share a driving electrode,
the driving method comprises the step of performing time-sharing driving on the first touch structure and the second touch structure,
when the first touch structure is driven, touch control on a display panel in the display module is realized;
and when the second touch structure is driven, realizing non-contact touch control on the display panel in the display module.
In some embodiments, when the second touch structure is driven, the same driving signal is simultaneously provided to a plurality of second electrode strips or a plurality of third electrode strips in the first touch structure, and the first electrode strips in the second touch structure receive a touch sensing signal to realize non-contact touch control on the display panel in the display module.
The embodiment of the invention has the beneficial effects that: according to the display module provided by the invention, the orthographic projection of the second touch structure on the display panel is positioned at the edge of the display area, and the driving electrode of the first touch structure is multiplexed as the driving electrode of the second touch structure, so that the non-contact touch function of the display module can be realized under the condition that the frame size of the display module is not increased.
Drawings
The accompanying drawings are included to provide a further understanding of embodiments of the disclosure, and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure, without limitation to the disclosure. The above and other features and advantages will become more readily apparent to those skilled in the art by describing in detail exemplary embodiments with reference to the attached drawings, in which:
fig. 1 is a schematic top view of a display module according to an embodiment of the disclosure.
Fig. 2 is a schematic block diagram of a display module for implementing contact touch and non-contact touch in an embodiment of the disclosure.
Fig. 3a is a schematic cross-sectional view of a structure of the display module of fig. 1.
Fig. 3b is a schematic top view of the first subunit and the second subunit according to an embodiment of the disclosure.
Fig. 3c is a schematic top view of a partial structure of a first electrode strip corresponding to a first subunit and a second subunit in an embodiment of the disclosure.
Fig. 3d is an enlarged top view of section B of fig. 3 c.
Fig. 3e is a schematic cross-sectional view of another structure of the display module of fig. 1.
Fig. 3f is a schematic cross-sectional view of another structure of the display module of fig. 1.
Fig. 4a is a schematic top view illustrating a structure of another display module according to an embodiment of the disclosure.
Fig. 4b is a schematic cross-sectional view of a structure of the display module of fig. 4 a.
Fig. 4c is a schematic cross-sectional view of another structure of the display module of fig. 4 a.
Detailed Description
In order to enable those skilled in the art to better understand the technical solutions of the embodiments of the present disclosure, a display module and a driving method thereof provided by the embodiments of the present disclosure are described in further detail below with reference to the accompanying drawings and detailed description.
Embodiments of the present disclosure will be described more fully hereinafter with reference to the accompanying drawings, in which embodiments shown may be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The embodiments of the present disclosure are not limited to the embodiments shown in the drawings, but include modifications of the configuration formed based on the manufacturing process. Thus, the regions illustrated in the figures have schematic properties and the shapes of the regions illustrated in the figures illustrate specific shapes of the regions, but are not intended to be limiting.
At present, a suspension gesture electrode design is added on a display panel integrated with a FMLOC (Flexible Multi Layer On Cell) touch structure, so that a suspension gesture touch function of the display module is realized.
The design of the suspension gesture touch electrode in the disclosed technology requires to increase the thickness and the frame size of the display module, and the handheld display equipment is hardly accepted. How to realize the suspension gesture touch function of the display module without increasing the frame size of the display module becomes a new target of industry research. In addition, how to realize the suspension gesture touch function of the display module without increasing the thickness of the display module is also a new goal of industry research.
In order to solve the above-mentioned problems in the prior art, in a first aspect, an embodiment of the present disclosure provides a display module, as shown in fig. 1, including a display panel 1, a first touch structure 2 and a second touch structure 3, where the first touch structure 2 and the second touch structure 3 are located on a display side of the display panel 1, the display panel 1 has a display area 101 and a frame area 102, and the frame area 102 is enclosed on a periphery of the display area 101; the front projection of the first touch structure 2 on the display panel 1 is located in the display area 101, and is used for performing touch control on the display panel 1; the orthographic projection of the second touch structure 3 on the display panel 1 is located at the edge of the display area 101, and is used for performing non-contact touch on the display panel 1, and the driving electrode of the first touch structure 2 is multiplexed as the driving electrode of the second touch structure 3.
The non-contact Touch is, for example, floating Touch (Floating Touch), i.e., a user can complete a Touch operation of the display panel without touching the screen. As shown in fig. 2, the principle of the suspension touch is: when the user approaches the finger to the screen, the second touch structure 3 can immediately detect the position and the action of the finger, the second touch structure 3 can detect the position and the action of the finger of the user in a capacitive mode, after detecting the position and the action of the finger of the user, the second touch structure 3 can transmit the data to the processor (namely, the suspension touch driving chip, namely, the 3D touch driving chip), and the processor can convert the data transmitted by the second touch structure 3 into corresponding operation instructions according to the data; after the processor converts the operation instruction, the instruction is fed back to the user through the display panel 1; the user can judge whether or not the own operation is successful by observing the change on the screen. In this embodiment, the touch type touch control may adopt a mutual capacitance touch control principle, that is, the touch position of the user is determined by sensing the influence of the human body electric field on the capacitance, when the finger touches the display panel 1, a human body electric field is formed, and the electric field affects the capacitance of the touched position of the first touch control structure 2, so as to generate an electric signal, and the touch position of the user is calculated by the signal; that is, when the finger touches the display panel 1, a capacitance is formed between the finger and the first touch structure 2, and the size of the capacitance is related to the position and the size of the finger; the first touch structure 2 transmits the detected capacitance value to a processor (i.e. a mutual capacitance touch driving chip, i.e. a 2D touch driving chip), and the processor can determine the position of the finger by measuring the capacitance value, thereby realizing the operation of the touch screen.
In some embodiments, bezel area 102 at least partially surrounds display area 101. The front projection of the second touch structure 3 on the display panel 1 is at least located at a part of the edge of the display area 101.
By enabling the orthographic projection of the second touch structure 3 on the display panel 1 to be located at the edge of the display area 101 and multiplexing the driving electrode of the first touch structure 2 as the driving electrode of the second touch structure 3, the non-contact touch function of the display module can be realized without increasing the frame size of the display module.
In some embodiments, as shown in fig. 1, the second touch structure 3 includes at least four first electrode bars 30, and orthographic projections of the at least four first electrode bars 30 on the display panel 1 are respectively located at the peripheral edges of the display area 101; each of the first electrode bars 30 is individually connected to one of the first signal lines 31.
The at least four first electrode strips 30 are configured to respectively receive the detected floating touch signals, and transmit the floating touch signals to the 3D touch driving chip through the first signal lines 31 connected thereto.
In some embodiments, as shown in fig. 1, 3a, 3b, 3c and 3d, the first touch structure 2 includes a plurality of second electrode bars 20 and a plurality of third electrode bars 21, the second electrode bars 20 extend along a first direction X, the plurality of second electrode bars 20 are sequentially arranged along a second direction Y, the third electrode bars 21 extend along a second direction Y, the plurality of third electrode bars 21 are sequentially arranged along the first direction X, the first direction X and the second direction Y intersect, the third electrode bars 21 include a body portion 211 and a bridge portion 212, and the body portion 211 and the bridge portion 212 are connected; the orthographic projection of the bridge portion 212 on the display panel 1 is located at the crossing position of the second electrode bar 20 and the third electrode bar 21.
The second electrode strip 20 and the third electrode strip 21 form a mutual capacitance therebetween, that is, the first touch structure 2 can realize touch mutual capacitance touch control on the display panel 1.
In some embodiments, as shown in fig. 3a, 3b, 3c and 3d, the display module includes a first conductive layer and a second conductive layer, which are sequentially stacked on the display side of the display panel 1, and an insulating layer 4 is disposed between the first conductive layer and the second conductive layer; the first conductive layer includes a pattern of the first electrode bar 30, a pattern of a portion of the second electrode bar 20, a pattern of a portion of the body portion 211, and a pattern of the bridge portion 212; the second conductive layer includes a pattern of the second electrode bars 20 and a pattern of the body portion 211.
Wherein the first electrode strip 30 is composed of a single conductive layer (i.e., a first conductive layer); the second electrode bars 20 and the body portion 211 overlapped with the orthographic projection of the first electrode bars 30 on the display panel 1 are constituted by a single conductive layer (i.e., a second conductive layer); the second electrode bar 20 and the body portion 211, which do not overlap with the orthographic projection of the first electrode bar 30 on the display panel 1, are constituted of two conductive layers (i.e., a first conductive layer and a second conductive layer); the bridge 212 is composed of a single conductive layer (i.e., a first conductive layer). The second touch structure 3 can be arranged by arranging the two conductive layers of the first touch structure 2, so that the thickness of the display module is not increased while the non-contact touch function of the display module is realized.
In this embodiment, as shown in fig. 3a, during touch control, the second electrode bar 20 and the third electrode bar 21 are used as touch control electrodes (such as mutual capacitance touch control electrodes), and the first electrode bar 30 does not perform touch control function; in a non-contact touch (e.g., a hover touch), the second electrode bar 20 or the third electrode bar 21 is used as a driving electrode for the non-contact touch, and the first electrode bar 30 is used as a receiving electrode for the non-contact touch.
In some embodiments, as shown in fig. 3e, the display module includes a first conductive layer and a second conductive layer, which are sequentially stacked on the display side of the display panel 1, and an insulating layer 4 is disposed between the first conductive layer and the second conductive layer; the first conductive layer includes a pattern of first electrode strips 30 and a pattern of bridging portions 212; the second conductive layer includes a pattern of the second electrode bars 20 and a pattern of the body portion 211.
Wherein the first electrode strip 30 is composed of a single conductive layer (i.e., a first conductive layer); the second electrode bar 20 and the body portion 211 are constituted by a single conductive layer (i.e., a second conductive layer); the bridge 212 is composed of a single conductive layer (i.e., a first conductive layer). The second touch structure 3 can be arranged by arranging the two conductive layers of the first touch structure 2, so that the thickness of the display module is not increased while the non-contact touch function of the display module is realized.
In this embodiment, as shown in fig. 3e, during touch control, the second electrode bar 20 and the third electrode bar 21 are used as touch control electrodes (such as mutual capacitance touch control electrodes), and the first electrode bar 30 does not perform touch control function; in a non-contact touch (e.g., a hover touch), the second electrode bar 20 or the third electrode bar 21 is used as a driving electrode for the non-contact touch, and the first electrode bar 30 is used as a receiving electrode for the non-contact touch.
In some embodiments, as shown in fig. 3f, the display module includes a first conductive layer, a second conductive layer, and a third conductive layer, where the first conductive layer, the second conductive layer, and the third conductive layer are sequentially stacked on the display side of the display panel 1, and an insulating layer 4 is disposed between any two adjacent first conductive layer, second conductive layer, and third conductive layer; the first conductive layer includes a pattern of bridges 212; the second conductive layer includes a pattern of the second electrode bars 20 and a pattern of the body portion 211; the third conductive layer comprises a pattern of first electrode strips 30.
Wherein the first electrode strip 30 is composed of a single conductive layer (i.e., a third conductive layer); the second electrode bar 20 and the body portion 211 are constituted by a single conductive layer (i.e., a second conductive layer); the bridge 212 is composed of a single conductive layer (i.e., a first conductive layer). The display module further comprises a polaroid 5, the third conductive layer can be prepared on one side of the polaroid 5, the polaroid is attached to the display side of the display panel 1 and used for reducing reflection of the display side to ambient light and improving the display effect of the display module. The thickness of the third conductive layer is very thin, and the whole thickness of the display module is not increased basically. In addition, the display module further comprises a protective cover plate, the third conductive layer can be prepared on one side of the protective cover plate, the protective cover plate covers the display side of the display panel 1, and the whole thickness of the display module is not increased.
In this embodiment, as shown in fig. 3f, during touch control, the second electrode bar 20 and the third electrode bar 21 are used as touch control electrodes (such as mutual capacitance touch control electrodes), and the first electrode bar 30 does not perform touch control function; in a non-contact touch (e.g., a hover touch), the second electrode bar 20 or the third electrode bar 21 is used as a driving electrode for the non-contact touch, and the first electrode bar 30 is used as a receiving electrode for the non-contact touch.
In some embodiments, as shown in fig. 3b, 3c and 3d, the second electrode strip 20 includes a plurality of first sub-units 200, the plurality of first sub-units 200 being connected; the third electrode bar 21 includes a plurality of second sub-units 210, and the plurality of second sub-units 210 are connected; the front projection area of the first sub-unit 200 positioned at the peripheral edge of the display area 101 on the display panel 1 is larger than the front projection area of the first sub-unit 200 positioned in the middle area of the display area 101 on the display panel 1; alternatively, the front projection area of the second sub-unit 210 located at the peripheral edge of the display area 101 on the display panel 1 is larger than the front projection area of the second sub-unit 210 located at the middle area of the display area 101 on the display panel 1.
The front projection area of the first subunit 200 or the second subunit 210 serving as the non-contact touch driving electrode on the display panel 1 at the peripheral edge of the display area 101 is larger than the front projection area of the first subunit 200 or the second subunit 210 on the display panel 1 at the middle area of the display area 101, and the above arrangement can better realize non-contact touch (such as suspension gesture touch) with a longer distance because the signal quantity of the non-contact touch is proportional to the size of the non-contact touch electrode.
In some embodiments, the front projection of the first electrode strips 30 onto the display panel 1 overlaps with the front projections of the 1-3 rows of first sub-units 200 onto the display panel 1; the front projection of the first electrode strips 30 onto the display panel 1 overlaps with the front projections of the 1-3 rows of said second sub-units 210 onto the display panel 1. By the arrangement, the area size of the non-contact type touch electrode can be further increased, so that the signal quantity of non-contact type touch is further increased, and further, the non-contact type touch with a longer distance is further realized.
In some embodiments, the first electrode strip 30, the second electrode strip 20, and the third electrode strip 21 are all grid-like electrodes. So arranged, the first touch structure 2 and the second touch structure 3 distributed in the display area 101 will not affect the normal display of the display panel 1.
In some embodiments, as shown in fig. 3a, 3e and 3f, the display module further includes a second signal line 22 and a third signal line 23 respectively connected to the second electrode bar 20 and the third electrode bar 21, where the second signal line 22 and the third signal line 23 are located in the frame area 102, and the second signal line 22 and the third signal line 23 may be respectively formed by a first conductive layer and a second conductive layer, so that the resistance of the second signal line 22 and the third signal line 23 can be reduced, thereby reducing the attenuation of the touch signal on the second signal line 22 and the third signal line 23, and improving the strength of the touch signal.
In some embodiments, as shown in fig. 3a, 3e and 3f, the display panel 1 includes a substrate 10, a pixel circuit 11, a light emitting element 12 and an encapsulation layer 13 sequentially disposed on one side of the substrate 10. The pixel circuit 11 includes a transistor 110 and a capacitor 111; the light-emitting element 12 comprises an anode 120, a light-emitting functional layer 121 and a cathode 122 which are sequentially overlapped far away from the substrate 10, wherein a pixel defining layer 14 is further arranged on one side of the anode 120 away from the substrate 10, an opening is formed in the pixel defining layer 14, and the light-emitting functional layer 121 is at least partially positioned in the opening; the encapsulation layer 13 is used for encapsulating the light emitting element 12 to prevent external moisture and oxygen from entering the light emitting element 12, and damaging the light emitting element 12. The sides of the first touch structure 2 and the second touch structure 3 facing away from the display panel 1 are further provided with a protective layer 15.
In some embodiments, the light emitting element 12 may be an organic electroluminescent element (i.e., an OLED element) or a light emitting diode element (i.e., an LED element, a Micro LED element, or a Mini LED element). In some embodiments, the display panel 1 may also be a liquid crystal display panel, and the specific structure of the liquid crystal display panel is not described herein.
The embodiment of the present disclosure further provides a display module, which is different from the above embodiment in that, as shown in fig. 4a, in the display module of the present embodiment, the front projection of the second touch structure 3 on the display panel 1 further extends to the frame area 102 on the basis of the display module structure in the above embodiment.
By the arrangement, the area size of the second touch structure 3 can be further increased, and the signal quantity of the non-contact touch is in direct proportion to the size of the second touch structure 3, so that the orthographic projection of the second touch structure 3 on the display panel 1 also extends to the frame area 102, and the non-contact touch (such as suspension gesture touch) with a longer distance can be better realized.
In some embodiments, the orthographic projections of the at least four first electrode strips 30 on the display panel 1 also extend to the peripheral border regions 102 outside the display region 101, respectively.
In some embodiments, as shown in fig. 4b, the display module includes a first conductive layer, a second conductive layer, and a third conductive layer, where the first conductive layer, the second conductive layer, and the third conductive layer are sequentially stacked on the display side of the display panel 1, and an insulating layer 4 is disposed between any two adjacent first conductive layer, second conductive layer, and third conductive layer; the first conductive layer includes a pattern of bridges 212; the second conductive layer includes a pattern of the second electrode bars 20 and a pattern of the body portion 211; the third conductive layer comprises a pattern of first electrode strips 30.
Wherein the first electrode strip 30 is composed of a single conductive layer (i.e., a third conductive layer); the second electrode bar 20 and the body portion 211 are constituted by a single conductive layer (i.e., a second conductive layer); the bridge 212 is composed of a single conductive layer (i.e., a first conductive layer).
In some embodiments, as shown in fig. 4c, the display module includes a first conductive layer and a second conductive layer, which are sequentially stacked on the display side of the display panel 1, and an insulating layer 4 is disposed between the first conductive layer and the second conductive layer; the first conductive layer includes a pattern of first electrode strips 30 and a pattern of bridging portions 212; the second conductive layer includes a pattern of the second electrode bars 20 and a pattern of the body portion 211.
Wherein the first electrode strip 30 is composed of a single conductive layer (i.e., a first conductive layer); the second electrode bar 20 and the body portion 211 are constituted by a single conductive layer (i.e., a second conductive layer); the bridge 212 is composed of a single conductive layer (i.e., a first conductive layer). The second touch structure 3 can be arranged by arranging the two conductive layers of the first touch structure 2, so that the thickness of the display module is not increased while the non-contact touch function of the display module is realized.
In some embodiments, the first electrode bars 30 located at the edges of the display area 101 may be made of a transparent metal material, and the first electrode bars 30 located at the bezel area 102 may be made of an opaque metal material to ensure normal display of the display panel 1.
Other structures of the display module in this embodiment are the same as those in the above embodiment, and will not be described here again.
Based on the structural arrangement of the display module in the above embodiment, the embodiment of the disclosure further provides a driving method of the display module, where the first touch structure and the second touch structure in the display module share a driving electrode, and the driving method includes performing time-sharing driving on the first touch structure and the second touch structure, and implementing touch control on a display panel in the display module when the first touch structure is driven; when the second touch structure is driven, non-contact touch control of the display panel in the display module is realized.
Through carrying out the timesharing drive to first touch structure and second touch structure, can realize the contact touch and the non-contact touch to this display module assembly, promote user experience.
In some embodiments, when the second touch structure is driven, the same driving signal is simultaneously provided to a plurality of second electrode strips or a plurality of third electrode strips in the first touch structure, and the first electrode strips in the second touch structure receive the touch sensing signal so as to realize non-contact touch control on the display panel in the display module.
According to the display module provided by the embodiment of the disclosure, the orthographic projection of the second touch structure on the display panel is positioned at the edge of the display area, and the driving electrode of the first touch structure is multiplexed as the driving electrode of the second touch structure, so that the non-contact touch function of the display module can be realized under the condition that the frame size of the display module is not increased.
The display module provided by the embodiment of the disclosure can be any product or component with a display function, such as an OLED panel, an OLED television, an OLED billboard, a display, a mobile phone, a navigator and the like.
It is to be understood that the above embodiments are merely exemplary embodiments employed to illustrate the principles of the present disclosure, however, the present disclosure is not limited thereto. Various modifications and improvements may be made by those skilled in the art without departing from the spirit and substance of the disclosure, and are also considered to be within the scope of the disclosure.

Claims (13)

1. A display module comprises a display panel, a first touch structure and a second touch structure,
the first touch structure and the second touch structure are positioned on the display side of the display panel,
the display panel is provided with a display area and a frame area, and the frame area is arranged on the periphery of the display area in a surrounding mode;
the orthographic projection of the first touch structure on the display panel is positioned in the display area and is used for carrying out contact touch on the display panel;
it is characterized in that the orthographic projection of the second touch structure on the display panel is positioned at the edge of the display area and is used for carrying out non-contact touch control on the display panel,
the driving electrode of the first touch structure is multiplexed as the driving electrode of the second touch structure.
2. The display module of claim 1, wherein the orthographic projection of the second touch structure on the display panel further extends to the bezel area.
3. The display module of claim 2, wherein the second touch structure comprises at least four first electrode bars,
orthographic projections of the at least four first electrode strips on the display panel are respectively positioned at the peripheral edges of the display area;
each first electrode strip is connected with a first signal line independently.
4. A display module according to claim 3, wherein the orthographic projections of the at least four first electrode strips on the display panel further extend to the peripheral frame region outside the display region, respectively.
5. The display module of claim 4, wherein the first touch structure comprises a plurality of second electrode bars and a plurality of third electrode bars,
the second electrode strips extend along the first direction, the plurality of second electrode strips are sequentially arranged along the second direction,
the third electrode strips extend along the second direction, the plurality of third electrode strips are sequentially arranged along the first direction,
the first direction and the second direction intersect,
the third electrode strip comprises a body part and a bridging part, and the body part is connected with the bridging part;
the orthographic projection of the bridging part on the display panel is positioned at the crossing position of the second electrode strip and the third electrode strip.
6. The display module of claim 5, comprising a first conductive layer and a second conductive layer, the first conductive layer and the second conductive layer being sequentially stacked on a display side of the display panel, an insulating layer being disposed between the first conductive layer and the second conductive layer;
the first conductive layer comprises a pattern of the first electrode strip, a pattern of a part of the second electrode strip, a pattern of a part of the body part and a pattern of the bridging part;
the second conductive layer includes a pattern of the second electrode bars and a pattern of the body portion.
7. The display module of claim 5, comprising a first conductive layer and a second conductive layer, the first conductive layer and the second conductive layer being sequentially stacked on a display side of the display panel, an insulating layer being disposed between the first conductive layer and the second conductive layer;
the first conductive layer comprises a pattern of the first electrode strips and a pattern of the bridge portions;
the second conductive layer includes a pattern of the second electrode bars and a pattern of the body portion.
8. The display module of claim 5, comprising a first conductive layer, a second conductive layer, and a third conductive layer, wherein the first conductive layer, the second conductive layer, and the third conductive layer are sequentially stacked on a display side of the display panel, and an insulating layer is disposed between any adjacent two of the first conductive layer, the second conductive layer, and the third conductive layer;
the first conductive layer includes a pattern of the bridge portion;
the second conductive layer includes a pattern of the second electrode bars and a pattern of the body portion;
the third conductive layer includes a pattern of the first electrode strip.
9. The display module of any one of claims 6-8, wherein the second electrode strip comprises a plurality of first sub-units, the plurality of first sub-units being connected;
the third electrode strip comprises a plurality of second subunits, and the plurality of second subunits are connected;
the orthographic projection area of the first subunit on the display panel, which is positioned at the peripheral edge of the display area, is larger than that of the first subunit on the display panel, which is positioned in the middle area of the display area;
or the orthographic projection area of the second subunit on the display panel, which is positioned at the peripheral edge of the display area, is larger than the orthographic projection area of the second subunit on the display panel, which is positioned in the middle area of the display area.
10. The display module of claim 9, wherein the front projection of the first electrode strip on the display panel overlaps with the front projections of 1-3 rows of the first subunits on the display panel;
the front projection of the first electrode strip on the display panel is overlapped with the front projection of 1-3 rows of the second subunits on the display panel.
11. The display module of any one of claims 6-8, wherein the first electrode strip, the second electrode strip, and the third electrode strip are all grid-like electrodes.
12. A driving method of a display module according to any one of claims 1 to 11, wherein the first touch structure and the second touch structure in the display module share a driving electrode,
the driving method comprises the step of performing time-sharing driving on the first touch structure and the second touch structure,
when the first touch structure is driven, touch control on a display panel in the display module is realized;
and when the second touch structure is driven, realizing non-contact touch control on the display panel in the display module.
13. The driving method of the display module according to claim 12, wherein the same driving signal is simultaneously provided to a plurality of second electrode bars or a plurality of third electrode bars in the first touch structure when the second touch structure is driven, and the first electrode bars in the second touch structure receive the touch sensing signal to realize non-contact touch control on the display panel in the display module.
CN202310601827.7A 2023-05-25 2023-05-25 Display module and driving method thereof Pending CN116627271A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310601827.7A CN116627271A (en) 2023-05-25 2023-05-25 Display module and driving method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310601827.7A CN116627271A (en) 2023-05-25 2023-05-25 Display module and driving method thereof

Publications (1)

Publication Number Publication Date
CN116627271A true CN116627271A (en) 2023-08-22

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Country Link
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