CN113655914B - Array substrate, touch display panel and touch display device - Google Patents
Array substrate, touch display panel and touch display device Download PDFInfo
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- CN113655914B CN113655914B CN202111013851.6A CN202111013851A CN113655914B CN 113655914 B CN113655914 B CN 113655914B CN 202111013851 A CN202111013851 A CN 202111013851A CN 113655914 B CN113655914 B CN 113655914B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
- G06F3/0418—Control or interface arrangements specially adapted for digitisers for error correction or compensation, e.g. based on parallax, calibration or alignment
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
- G06F3/04164—Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
- G06F3/04166—Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving
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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
- G06F3/044—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
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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
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0447—Position sensing using the local deformation of sensor cells
Abstract
The application discloses an array substrate, a touch display panel and a touch display device, wherein the array substrate comprises: a first substrate; the touch electrodes are arranged on the first substrate; the driving circuit layer is arranged on one side of the touch electrode, which is far away from the first substrate, and a plurality of touch thin film transistors are formed in the driving circuit layer; each touch electrode is connected with at least one touch thin film transistor to form a touch unit. The array substrate, the touch display panel and the touch display device prevent signal crosstalk and shielding of the pixel electrode and/or the common electrode, can reduce the number of ICs, and are favorable for popularization and popularization of In-cell touch technology In display panels, particularly large-size display panels.
Description
Technical Field
The present application relates to the field of display technologies, and in particular, to an array substrate, a touch display panel and a touch display device.
Background
With the development of display technology, more and more functions are integrated in the display, and new functions are synchronously given to the display. For example, a display, which is an important bridge for human-computer interaction, tends to have a function of sensing instructions issued by a person. To achieve the above functions, the touch sensor is integrated into the display.
Touch technology has evolved from On-glass to On-cell to the current In-cell mode. While the integration of touch functionality into large screen displays tends to be slow. At present, the On-glass mode is widely adopted. In-cell has significant advantages such as low Module (MOD) thickness and high signal-to-noise ratio, but the touch mode is mainly applied In the display mode of In-plane switching mode (In Plane Switching, IPS) or fringe field switching mode (Fringe Field Switching, FFS).
Currently, in-cell touch technology mainly adopts a self-capacitance electrode (PAD) mode. The disadvantage of this mode is that the display panel of the PAD mode, particularly the large-sized display panel, requires a large number of outgoing lines Pin and a large number of driving chips (ICs), which undoubtedly bring about a sharp increase in cost.
Moreover, the conventional In-cell touch technology also has the problems of signal crosstalk and shielding of the pixel electrode and/or the common electrode, and influences the accuracy and sensitivity of touch detection.
Therefore, it is desirable to provide an array substrate, a touch display panel and a touch display device, so as to solve the above-mentioned problems.
Disclosure of Invention
In order to solve the technical problems, the application provides an array substrate, a touch display panel and a touch display device, which prevent signal crosstalk and shielding of pixel electrodes and/or common electrodes, can reduce the number of ICs, and is beneficial to popularization and popularization of In-cell touch technology In display panels, particularly large-size display panels.
In order to achieve the above purpose, the array substrate, the touch display panel and the display device provided by the application adopt the following technical schemes.
The application provides an array substrate, which comprises:
a first substrate;
the touch electrodes are arranged on the first substrate;
the driving circuit layer is arranged on one side of the touch electrode, which is far away from the first substrate, and a plurality of touch thin film transistors are formed in the driving circuit layer;
each touch unit is formed by connecting the touch electrode with at least one corresponding touch thin film transistor.
Optionally, in some embodiments, a plurality of the touch units are arranged in an array form;
the array substrate further comprises a plurality of touch scanning lines and a plurality of data reading lines, wherein:
the touch scanning lines are connected with the touch thin film transistors of the touch units in the corresponding rows;
the data reading lines are connected with the touch thin film transistors of the touch units in the corresponding columns.
Optionally, in some embodiments, a sense amplifier is provided on the data read line.
Optionally, in some embodiments, the driving circuit layer is formed with:
the interlayer dielectric layer is arranged on one side, far away from the touch electrode, of the touch thin film transistor; the method comprises the steps of,
the common electrode is arranged on one side of the interlayer dielectric layer, which is far away from the touch thin film transistor;
wherein the interlayer dielectric layer is a multilayer laminated structure.
Optionally, in some embodiments, a pixel electrode is further formed in the driving circuit layer, and the pixel electrode is located on a side of the interlayer dielectric layer where the common electrode is located, or on a side of the interlayer dielectric layer away from the common electrode.
Optionally, in some embodiments, the touch electrode is configured as a self-capacitive touch electrode.
Correspondingly, the application also provides a touch display panel which comprises the array substrate and the opposite substrate arranged opposite to the array substrate.
Optionally, in some embodiments, the display and the touch of the touch display panel adopt a scanning mode driven by time sharing.
Correspondingly, the application also provides a touch display device which comprises the touch display panel and the backlight module.
Optionally, in some embodiments, the backlight module is disposed on a side of the opposite substrate away from the array substrate.
Compared with the prior art, the array substrate, the touch display panel and the touch display device can solve the signal crosstalk and shielding of the common electrode and/or the pixel electrode by arranging the touch electrode on the substrate, and can also solve the crosstalk caused by parasitic capacitance between the touch electrode and the common electrode and/or the pixel electrode, thereby improving the sensitivity and accuracy of the touch unit. The touch control unit adopts an active matrix touch control technology, and adopts a sampling mode of active matrix line scanning for addressing, so that compared with the existing self-capacitance mode, the touch control unit can greatly reduce the number of ICs, and is favorable for recommending the popularization and popularization of In-cell touch technology In display, particularly large-size display.
Drawings
The technical solution and other advantageous effects of the present application will be made apparent by the following detailed description of the specific embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a first embodiment of an array substrate according to an embodiment of the present application.
Fig. 2 is a schematic circuit diagram of a touch unit of the array substrate in fig. 1.
Fig. 3 is a schematic diagram of a first embodiment of a touch display panel according to an embodiment of the application.
Fig. 4 is a schematic diagram of a second embodiment of an array substrate according to an embodiment of the present application.
Fig. 5 is a schematic diagram of a touch display panel employing the array substrate of fig. 4.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to fall within the scope of the application. Furthermore, it should be understood that the detailed description is presented herein for purposes of illustration and description only, and is not intended to limit the application. In the present application, unless otherwise indicated, terms of orientation such as "upper" and "lower" are used to generally refer to the upper and lower positions of the device in actual use or operation, and specifically the orientation of the drawing figures; while "inner" and "outer" are for the outline of the device.
The application provides an array substrate 10 and a touch display panel 100 formed by the array substrate 10. As shown in fig. 1 and 2, an array substrate 10 of the present application includes a first substrate 11, a driving circuit layer 12 disposed on the first substrate 11, and a plurality of touch units 13. The touch unit 13 includes a touch electrode 131 and a touch thin film transistor 132 electrically connected to an input end of the touch electrode 131, and the touch thin film transistor 132 is formed in the driving circuit layer 12, and the touch electrode 131 is located between the first substrate 11 and the driving circuit layer 12.
Obviously, in the array substrate 10 and the display panel of the present application, by disposing the touch electrode 131 on the first substrate 11, the crosstalk and shielding effect of signals caused by the pixel electrode 122 and/or the common electrode 123 can be effectively solved, and at the same time, the crosstalk problem caused by the parasitic capacitance between the touch electrode 131 and the pixel electrode 122 and/or the common electrode 123 can be reduced, so that the accuracy and sensitivity of the touch unit 13 can be improved.
Moreover, the touch control unit 13 is an active matrix touch control unit 13, can realize sampling mode addressing of active matrix line scanning, can greatly reduce the number of ICs, and is favorable for recommending the popularization and popularization of In-cell touch technology In display, especially large-size display.
Referring to fig. 1 and 3, the touch display panel 100 of the present embodiment includes an array substrate 10 of the present application and a counter substrate 20 disposed opposite to the array substrate 10.
Specifically, the touch display panel 100 is a liquid crystal touch display panel 100. At this time, the display mode of the touch display panel 100 may be IPS (In Plane Switching, in-plane switching mode).
Referring to fig. 1 and 3, the array substrate 10 includes a first substrate 11, a driving circuit layer 12, and a touch unit 13, wherein the touch unit 13 includes a touch electrode 131 and a touch thin film transistor 132.
The first substrate 11 is a transparent substrate, typically a transparent rigid glass substrate, or a transparent flexible substrate. For example, the first substrate 11 is made of a polymer-based material having light transmittance and flexibility, and the polymer-based material includes polyimide, polysiloxane, epoxy-based resin, acrylic resin, polyester, and/or the like. In this embodiment, the material of the first substrate 11 is a glass substrate.
Referring to fig. 1, the touch electrode 131 is directly disposed on the first substrate 11. The touch electrode 131 is used for sensing capacitance change during touch operation of the finger. Specifically, when a finger touches a certain position of the touch display panel 100 or the screen, the capacitance value of the touch electrode 131 at that position changes, and the output potential signal changes.
In the embodiment of the present application, by disposing the touch electrode 131 on the first substrate 11, the touch electrode 131 and the pixel electrode 122 and/or the common electrode 123 can be separated, so as to reduce the crosstalk problem caused by parasitic capacitance.
In some embodiments, in which the array substrate 10 is used as the light emitting side (or the display side), the backlight module is disposed on the opposite substrate 20 away from the array substrate 10, so that the distance between the touch electrode 131 and the finger can be reduced, and the sensitivity of sensing the touch electrode 131 can be improved. At this time, even a slight touch may be perceived by the touch electrode 131.
Specifically, the touch electrode 131 is configured as a self-capacitance touch sensing electrode.
Specifically, the touch electrode 131 is a transparent conductive film. The material of the touch electrode 131 includes transparent conductive materials such as Indium Tin Oxide (ITO), indium zinc Oxide (Indium Zinc Oxide, IZO), aluminum Tin Oxide (Aluminum Tin Oxide, ATO), aluminum zinc Oxide (Aluminum Zinc Oxide, AZO), indium gallium zinc Oxide (Indium Gallium Zinc Oxide, IGZO), or metals or alloys smaller than 60 angstroms.
Referring to fig. 1 to 3, the driving circuit layer 12 is disposed on a side of the touch electrode 131 away from the first substrate 11, and a plurality of touch thin film transistors 132 for forming the touch unit 13 are formed in the driving circuit layer 12. That is, the touch thin film transistor 132 of the touch unit 13 is disposed in the driving circuit layer 12.
The input end of the touch thin film transistor 132 is connected to the touch electrode 131, and is used for controlling the on-off of a touch output signal of the touch unit 13. In this embodiment, the source electrode of the touch thin film transistor 132 is connected to the corresponding touch electrode 131.
Specifically, each of the touch units 13 includes a touch electrode 131 and at least one touch thin film transistor 132. Preferably, the touch unit 13 includes two touch thin film transistors 132. In other embodiments, the number of the touch thin film transistors 132 may be 5 or 3. That is, the number of the touch thin film transistors 132 in the touch unit 13 is not limited in the present application.
Referring to fig. 1 to 3, the driving circuit layer 12 includes a plurality of touch scan lines 126 disposed at intervals in a lateral direction and a plurality of data read lines 127 disposed at intervals in a longitudinal direction.
Referring to fig. 2, the touch scanning line 126 is connected to the touch thin film transistor 132 of each touch unit 13 of the corresponding row. Specifically, the touch scanning lines 126 are connected to the control ends of the touch thin film transistors 132 of each touch unit 13 in the corresponding row, n touch scanning lines 126 are connected to the control ends of the touch thin film transistors 132 of the touch units 13 in the corresponding n rows, and one touch scanning line 126 is used for controlling the touch units 13 in the n columns of the row where the touch scanning line is located to realize the row scanning of the touch detection.
Referring to fig. 2, the data read line 127 is connected to the touch thin film transistor 132 of each touch unit 13 in the corresponding row. Specifically, the data read lines 127 are connected to the output ends of the touch thin film transistors 132 of each touch unit 13 in the corresponding columns, n data read lines 127 are connected to the output ends of the touch thin film transistors 132 of the touch units 13 in the corresponding n columns, one data read line 127 is used for reading the touch signals of the touch units 13 in the n rows of the corresponding columns, so as to realize column scanning of touch detection, the number of the touch signals only needs n, the sensing precision is high, the wiring is simple and easy to integrate, and the reading mode is easy to realize.
So configured, the touch unit 13 of the present application can adopt a line scanning manner, and in a transverse direction, the touch scanning line 126 scans line by line, wherein each line of the touch scanning line 126 is opened once; in the longitudinal direction, the coordinates of the longitudinal direction are determined by reading out the touch unit 13 once per column by the data reading line 127, so that the coordinate positions in the X, Y directions can be determined and multi-touch is supported.
Referring to fig. 2, specifically, a plurality of the touch scan lines 126 may be disposed at intervals and parallel to each other, and used for outputting the scan control signals of the touch unit 13, and the number of the touch scan lines 126 may be n. The plurality of data reading lines 127 may be longitudinally spaced and parallel to each other, and are configured to read touch output signals of the touch unit 13, and the number of data reading lines 127 may be n; the touch scanning lines 126 and the data reading lines 127 form a grid distribution.
Specifically, the input terminal of the touch scan line 126 is connected to the gate driver (IC) 41, and the output terminal of the data read line 127 is connected to the touch driver (IC) 42. When the touch unit 13 is scanned, the gate driver 41 provides a scan signal to the touch scan line 126, and the data read line 127 transmits the touch electrical signal read by the data read line to the touch driver 42.
Specifically, in order to better detect the touch operation, the touch unit 13 further includes a sense amplifier disposed on the data reading line 127 to amplify the electrical signal sensed by the touch unit 13, so that the coordinate position of the signal (touch) stimulation point can be accurately located. In implementations, the sense amplifier may be an integrator.
In the application, the touch control unit 13 adopts an active matrix touch control (AM-touch) technology, is integrated In an inner substrate by adopting an In-cell mode, adopts an active matrix scanning sampling mode for addressing, can realize multi-point touch control compared with the current self-capacitance touch control mode, can greatly reduce the number of ICs, and is favorable for recommending the popularization and popularization of the In-cell touch technology In display, in particular large-size display.
In addition, in the scheme of the application, the arrangement of the touch control unit 13 hardly causes the thickness and weight of the array substrate 10 and the touch control display panel 100 to increase, and the frame area can be reduced. Compared with the traditional embedded touch display panel, the limitation that the embedded touch electrode 131 can only adopt a common electrode multiplexing mode is broken through, and the technical difficulty that a huge touch circuit is bridged across different substrates is solved; compared with the mutual capacitance touch display panel 100, the touch unit 13 has higher sensitivity and is more suitable for large-sized commercial products.
Specifically, the driving circuit layer 12 further includes a plurality of pixel driving circuits. The pixel driving circuit includes a display thin film transistor 121, a pixel electrode 122, a common electrode 123, a driving data line, and a driving scan line. Wherein the source electrode of the display thin film transistor 121 is connected to the driving data line, and the gate electrode of the display thin film transistor is connected to the driving scan line.
Adjacent driving data lines and adjacent driving scanning lines of the array substrate 10 cross and correspond to a pixel region. Accordingly, the distribution of the touch units 13 may be that one pixel area is correspondingly provided with one touch unit 13.
In order to reduce the manufacturing cost and simplify the circuit structure, the distribution of the touch units 13 may be: the plurality of pixel areas are provided with one touch unit 13. Specifically, the number of pixel areas corresponding to one pixel display unit may be determined according to the actual touch sensing area, the aperture ratio of the pixel, and the like. For example, if the actual touch sensing area is larger, one touch unit 13 may be correspondingly disposed in more pixel areas, otherwise, one touch unit 13 may be correspondingly disposed in fewer pixel areas. If the aperture ratio of the pixel is higher, one touch unit 13 may be correspondingly disposed in more pixel areas, otherwise, one touch unit 13 may be correspondingly disposed in fewer pixel areas.
As shown in fig. 1 and 3, in order to be insulated from the touch electrode 131, the driving circuit layer 12 includes an insulating layer 124, and the insulating layer 124 is disposed between the touch thin film transistor 132 and the touch electrode 131. The insulating layer 124 may have a single-layer film structure or a multilayer laminated film structure.
As shown in fig. 1 and 3, the driving circuit layer 12 further includes an interlayer dielectric layer 125, and the interlayer dielectric layer 125 is disposed on a side of the touch thin film transistor 132 and the display thin film transistor away from the insulating layer 124.
In practice, the interlayer dielectric layer 125 may be a multi-layered structure, so as to further reduce the crosstalk problem caused by the parasitic capacitance between the touch electrode 131 and the pixel electrode 122 and/or the common electrode 123.
Specifically, the interlayer dielectric 125 includes an inorganic dielectric layer and an organic dielectric layer which are sequentially overlapped in the thickness direction thereof, and by overlapping the organic and inorganic layers, the adhesion between the layers is enhanced while the problems of poor flexibility and bending property due to the increase of the film layer are alleviated. In a preferred embodiment, the interlayer dielectric 125 is a sandwich structure of PV/PFA/PV. In particular embodiments, the organic material may be polyimide, epoxy, acrylic, polyester, and/or the like.
As shown in fig. 1 and 3, the common electrode 123 is disposed on a side of the interlayer dielectric 125 away from the touch thin film transistor 132.
Specifically, the common electrode 123 may be implemented in the form of a plate electrode, a slit electrode, or a finger electrode. It is to be noted that the present application is not limited to the arrangement form of the common electrode 123.
Specifically, the common electrode 123 is a transparent electrode. The transparent electrode material of the common electrode 123 may be a transparent conductive material such as Indium Tin Oxide (ITO), indium zinc Oxide (Indium Zinc Oxide, IZO), aluminum Tin Oxide (Aluminum Tin Oxide, ATO), aluminum zinc Oxide (Aluminum Zinc Oxide, AZO), indium gallium zinc Oxide (Indium Gallium Zinc Oxide, IGZO), or a metal or alloy less than 60 angstroms.
As shown in fig. 1 and 3, the pixel electrode 122 is disposed on a side of the interlayer dielectric layer 125 away from the touch thin film transistor 132, and the pixel electrode 122 is connected to the drain electrode of the display thin film transistor 121 through a via hole.
Specifically, the pixel electrode 122 may be implemented in the form of a plate electrode, a slit electrode, or a finger electrode.
Specifically, the pixel electrode 122 is a transparent electrode. The transparent electrode material of the pixel electrode 122 may be a transparent conductive material such as Indium Tin Oxide (ITO), indium zinc Oxide (Indium Zinc Oxide, IZO), aluminum Tin Oxide (Aluminum Tin Oxide, ATO), aluminum zinc Oxide (Aluminum Zinc Oxide, AZO), indium gallium zinc Oxide (Indium Gallium Zinc Oxide, IGZO), or a metal or alloy less than 60 angstroms.
Referring to fig. 3, the opposite substrate 20 and the array substrate 10 are arranged in a box-to-box manner. The counter substrate 20 includes a second substrate 21, a black matrix 22, a color resist layer 23, and a conductive electrode 24, wherein the color resist layer 23 includes a plurality of color resist blocks arranged at intervals.
The color block is used for converting light incident light into emergent light of various colors so as to visually display colors corresponding to the color blocks and further display needed pictures. Preferably, the color block includes at least one of a red color block, a blue color block, or a green color block. The conductive electrode 24 is configured as a common electrode 123 disposed on the color film substrate.
Wherein the color resist layer 23 is disposed on the second substrate 21, the black matrix 22 is disposed on the second substrate 21 and between two adjacent color resist blocks, and the planarization layer is disposed on a side of the color resist layer 23 away from the second substrate 21 and covers the black matrix 22 and the color resist blocks. The conductive electrode 24 is disposed on the side of the black matrix 22 remote from the second substrate 21.
Specifically, the touch liquid crystal display panel includes a liquid crystal layer 30 between an array substrate 10 and a counter substrate 20.
The specific structures of the touch display panel 100 and the array substrate 10 of the present application are described above. In particular implementation, in order to realize the display and touch functions, the display and touch of the touch display panel 100 adopts a scanning mode driven by time sharing, that is, after each frame of display finishes scanning, the touch unit 13 scans, so that the problem of signal crosstalk between display and touch can be effectively solved.
Referring to fig. 4 and fig. 5 together, fig. 4 is a schematic diagram of a second embodiment of the array substrate 10 according to the present application, and fig. 5 is a schematic diagram of a touch display panel 100 employing the array substrate 10 of fig. 4.
The main difference of the present embodiment is that the arrangement of the pixel electrodes 122 in the array substrate 10 is different from that in fig. 1 to 3. Referring to fig. 4 and 5, in the present embodiment, the pixel electrode 122 is disposed on a side of the interlayer dielectric 125 away from the common electrode 123. The pixel electrode 122 is layered with the source and drain electrodes of the thin film transistor, and the pixel electrode 122 is overlapped on the source electrode of the driving thin film transistor.
In this embodiment, the display mode of the touch display panel 100 is FFS.
In other embodiments, the array substrate 10 may be a COA-type array substrate 10, i.e. the color resist layer 23 or the color film layer is disposed on the array substrate 10. Accordingly, in the touch display panel 100, the opposite substrate 20 may omit the color resist layer 23.
The application also provides a touch display device, which comprises the touch display panel 100 and the backlight module.
Specifically, the backlight module is disposed on a side of the opposite substrate 20 away from the array substrate 10. In this embodiment, the backlight module is disposed on the opposite substrate 20 at a side far away from the array substrate 10, so that the distance between the touch electrode 131 and the finger can be reduced, and the sensitivity of sensing the touch electrode 131 can be improved. At this time, even a slight touch may be perceived by the touch electrode 131.
The array substrate, the touch display panel and the display device provided by the embodiment of the application are described in detail, and specific examples are applied to the description of the principle and the implementation of the application, and the description of the above embodiments is only used for helping to understand the method and the core idea of the application; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present application, the present description should not be construed as limiting the present application.
Claims (9)
1. An array substrate, characterized in that the array substrate comprises:
a first substrate;
the touch electrodes are arranged on the first substrate;
the driving circuit layer is arranged on one side of the touch electrode, which is far away from the first substrate, and a plurality of touch thin film transistors are formed in the driving circuit layer;
each touch unit is formed by connecting the touch electrode with at least one corresponding touch thin film transistor;
the touch control units are arranged in an array mode; the array substrate further comprises a plurality of touch scanning lines and a plurality of data reading lines, wherein: the touch scanning lines are connected with the control ends of the touch thin film transistors of the touch units in the corresponding rows; the data reading lines are connected with the output ends of the touch thin film transistors of the touch units in the corresponding columns, and the input ends of the touch thin film transistors are connected with the touch electrodes; the input end of the touch scanning line is connected to the grid driver, and the output end of the data reading line is connected to the touch driver.
2. The array substrate of claim 1, wherein a sense amplifier is disposed on the data read line.
3. The array substrate of claim 1, wherein the driving circuit layer is formed with:
the interlayer dielectric layer is arranged on one side, far away from the touch electrode, of the touch thin film transistor; the method comprises the steps of,
the common electrode is arranged on one side of the interlayer dielectric layer, which is far away from the touch thin film transistor;
wherein the interlayer dielectric layer is a multilayer laminated structure.
4. The array substrate of claim 3, wherein a pixel electrode is further formed in the driving circuit layer, the pixel electrode being located at a side of the interlayer dielectric layer where the common electrode is provided or at a side of the interlayer dielectric layer far from the common electrode.
5. The array substrate of claim 1, wherein the touch electrode is configured as a self-capacitive touch electrode.
6. A touch display panel, wherein the touch display panel comprises the array substrate according to any one of claims 1 to 5, and an opposite substrate arranged opposite to the array substrate.
7. The touch display panel of claim 6, wherein the display and touch of the touch display panel are in a time-sharing scanning mode.
8. A touch display device, comprising the touch display panel of claim 6 or 7, and a backlight module.
9. The touch display device of claim 8, wherein the backlight module is disposed on a side of the opposite substrate away from the array substrate.
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| CN104808375A (en) * | 2015-05-08 | 2015-07-29 | 厦门天马微电子有限公司 | Display panel, display device and manufacturing method |
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| CN111443511A (en) * | 2020-04-16 | 2020-07-24 | 深圳市华星光电半导体显示技术有限公司 | Self-capacitance touch display panel and driving method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103941495A (en) * | 2013-01-25 | 2014-07-23 | 上海天马微电子有限公司 | Touch control display panel and device |
| CN103529993A (en) * | 2013-11-01 | 2014-01-22 | 京东方科技集团股份有限公司 | Array base plate, touch display panel and display device |
| CN203688937U (en) * | 2013-12-17 | 2014-07-02 | 合肥京东方光电科技有限公司 | Array substrate and touch screen |
| CN104808375A (en) * | 2015-05-08 | 2015-07-29 | 厦门天马微电子有限公司 | Display panel, display device and manufacturing method |
| CN108873438A (en) * | 2018-07-27 | 2018-11-23 | 京东方科技集团股份有限公司 | A kind of array substrate, display panel and display device |
| CN111443511A (en) * | 2020-04-16 | 2020-07-24 | 深圳市华星光电半导体显示技术有限公司 | Self-capacitance touch display panel and driving method thereof |
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