CN113658992A - Touch display panel and display device - Google Patents
Touch display panel and display device Download PDFInfo
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- CN113658992A CN113658992A CN202110995048.0A CN202110995048A CN113658992A CN 113658992 A CN113658992 A CN 113658992A CN 202110995048 A CN202110995048 A CN 202110995048A CN 113658992 A CN113658992 A CN 113658992A
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/40—OLEDs integrated with touch screens
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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
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/131—Interconnections, e.g. wiring lines or terminals
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Abstract
The application discloses a touch display panel and a display device, which are used for reducing the number of touch signal lines. The touch display panel provided by the embodiment of the application comprises a display area and a peripheral area outside the display area; the touch display panel specifically includes: the display device comprises a display substrate and a touch substrate positioned on one side of the display substrate; the touch substrate includes: a plurality of touch electrodes located in the display area; the touch electrodes are divided into: a plurality of touch electrode rows and a plurality of touch electrode columns; the display substrate includes: the touch control device comprises a touch control grid electrode driving circuit which is positioned in the peripheral area and electrically connected with the touch control electrode row and a first touch control signal line which is electrically connected with the touch control grid electrode driving circuit.
Description
Technical Field
The application relates to the technical field of display, in particular to a touch display panel and a display device.
Background
With the continuous development of Active-matrix organic light-emitting diodes (AMOLEDs), the combination of a large-size display screen and a Flexible Multi-Layer integrated touch technology (FMLOC) will be a development trend in the coming years. However, the development of FMLOC of large size brings new technical challenges.
Disclosure of Invention
The embodiment of the application provides a touch display panel and a display device, which are used for reducing the number of touch signal lines.
The touch display panel provided by the embodiment of the application comprises a display area and a peripheral area outside the display area;
the touch display panel specifically includes: the display device comprises a display substrate and a touch substrate positioned on one side of the display substrate;
the touch substrate includes: a plurality of touch electrodes located in the display area;
the touch electrodes are divided into: the touch control device comprises a plurality of touch control electrode rows extending along a first direction and arranged along a second direction, and a plurality of touch control electrode columns extending along the second direction and arranged along the first direction; the first direction intersects the second direction;
the display substrate includes: the touch control device comprises a touch control grid electrode driving circuit which is positioned in the peripheral area and electrically connected with the touch control electrode row, and a first touch control signal line which is positioned in the peripheral area and electrically connected with the touch control grid electrode driving circuit.
In some embodiments, the touch gate driving circuit and the first touch signal line are disposed on both sides of the extending direction of the touch electrode row.
In some embodiments, the touch gate driving circuit includes a plurality of cascaded shift registers; the shift registers are electrically connected with the touch electrode rows in a one-to-one correspondence manner; the cascaded bit registers are electrically connected with the first touch signal line; the plurality of cascaded bit registers and the first touch signal line electrically connected with the cascaded bit registers are located on the same side in the extending direction of the touch electrode row.
In some embodiments, a shift register includes: a shift circuit, and a first control circuit;
the shift circuit comprises an input signal end and a clock signal end, and the output end of the shift circuit is electrically connected with the control end of the first control circuit; the shift circuit is configured to: responding to a starting signal input by an input signal end and a clock signal input by a clock signal end, and outputting a control signal to a first control circuit;
the input end of the first control circuit is electrically connected with the first touch signal line, and the output end of the first control circuit is electrically connected with one touch electrode row; the first control circuit is configured to: responding to a control signal output by the output end of the shift circuit, and transmitting a touch signal transmitted by the first touch signal line to the touch electrode row;
in the first stage of shift register, the input signal end of the shift circuit is electrically connected with the starting signal end;
in the rest shift registers, the input signal end of the shift circuit is electrically connected with the output end of the shift circuit of the shift register at the previous stage.
In some embodiments, a shift circuit includes: a first transistor, a second transistor, a third transistor, a fourth transistor, a fifth transistor, a sixth transistor, a seventh transistor, an eighth transistor, a first capacitor, and a second capacitor;
a control electrode of the first transistor is electrically connected with the first clock signal end, a first end of the first transistor is electrically connected with the input signal end, and a second end of the first transistor is electrically connected with a control electrode of the second transistor, a second electrode of the seventh transistor and a first electrode of the eighth transistor;
the first electrode of the second transistor is electrically connected with the first clock signal end;
a control electrode of the third transistor is electrically connected with the first clock signal end, a first electrode of the third transistor is electrically connected with the first level signal end, and a second electrode of the third transistor is electrically connected with a second electrode of the second transistor, a control electrode of the sixth transistor, a control electrode of the fourth transistor and a first electrode of the second capacitor;
a control electrode of the eighth transistor is electrically connected with the first level signal end, and a second electrode of the eighth transistor is electrically connected with a control electrode of the fifth transistor and the first electrode of the first capacitor;
a first electrode of the sixth transistor is electrically connected with the second level signal end, and a second electrode of the sixth transistor is electrically connected with the first electrode of the seventh transistor;
the control electrode of the seventh transistor is electrically connected with the second clock signal end;
a first electrode of the fourth transistor and a second electrode of the second capacitor are electrically connected with the second level signal end, and a second electrode of the fourth transistor, a second electrode of the first capacitor and a second electrode of the fifth transistor are electrically connected with the first node;
the first electrode of the fifth transistor is electrically connected to the second clock signal terminal.
In some embodiments, the first control circuit includes a ninth transistor;
the control electrode of the ninth transistor is electrically connected with the output end of the shift circuit, the first electrode of the ninth transistor is electrically connected with the first touch signal line, and the second electrode of the ninth transistor is electrically connected with one touch electrode row.
In some embodiments, the touch substrate further comprises: a plurality of first connecting leads extending from the display region to the peripheral region;
the display substrate specifically includes: the touch control device comprises a substrate base plate, a driving circuit layer, a light-emitting device layer, a retaining wall structure and a packaging layer, wherein the driving circuit layer is positioned on one side, facing the touch control base plate, of the substrate base plate;
the driving circuit layer comprises a touch control grid electrode driving circuit;
the driving circuit layer specifically includes: a first conductive layer, a second conductive layer positioned at one side of the first conductive layer and the light emitting device layer;
the first conductive layer includes a control electrode of the ninth transistor; the second conductive layer includes a first pole and a second pole of the ninth transistor;
the packaging layer exposes at least part of the second pole of the ninth transistor;
one end of each first connecting lead is electrically connected with one touch electrode row, and the other end of each first connecting lead extends to the peripheral area and is electrically connected with the second pole of the ninth transistor exposed out of the packaging layer.
In some embodiments, the driving circuit layer further comprises: the display grid driving circuit is arranged on the same layer as the touch grid driving circuit; the display grid driving circuit is positioned between the touch grid driving circuit and the display area.
In some embodiments, the retaining wall structure is located in the peripheral region and surrounds the display region, and the retaining wall structure includes a first retaining wall and a second retaining wall of the first retaining wall departing from the display region;
the peripheral area also comprises a crack blocking retaining wall;
the orthographic projection of the touch control grid electrode driving circuit on the substrate base plate is positioned between the orthographic projection of the first retaining wall on the substrate base plate and the orthographic projection of the crack blocking retaining wall on the substrate base plate;
the orthographic projection of the display grid electrode driving circuit on the substrate base plate is positioned on one side, close to the display area, of the orthographic projection of the first retaining wall on the substrate base plate.
In some embodiments, the light emitting device layer comprises: an anode layer, a light emitting functional layer, and a cathode layer; the anode layer includes a cathode contact layer electrically connected to the cathode layer;
the driving circuit layer further includes: a first power signal line electrically connected to the cathode contact layer; the first power supply signal line at the orthographic projection of the substrate at least covers the area between the orthographic projection of the display grid driving circuit on the substrate and the orthographic projection of the touch grid driving circuit on the substrate.
In some embodiments, the anode layer further comprises a first connection pad;
at least one part of the exposed second pole of the ninth transistor on the side, away from the substrate base plate, of the packaging layer is provided with a first connecting pad which is in contact with the second pole of the ninth transistor; the first connecting lead extends from the display area to the peripheral area to be contacted with the first connecting pad.
In some embodiments, the peripheral zone further comprises: and the protective layer covers the edge and the side face of the second pole of the ninth transistor.
In some embodiments, the touch substrate specifically includes: the light-emitting device comprises a packaging layer, a first buffer layer, a first touch electrode layer, a first insulating layer and a second touch electrode layer, wherein the first buffer layer is positioned on one side, away from the light-emitting device layer, of the packaging layer;
the second touch electrode layer comprises a first connecting lead;
the first buffer layer extends from the display area to the edge of the peripheral area cladding packaging layer;
the first insulating layer extends from the display area to the peripheral area and wraps the edge of the first buffer layer.
In some embodiments, the touch display panel further comprises: and the second touch signal lines are electrically connected with the touch electrode rows in a one-to-one correspondence mode and extend from the display area to the peripheral area along a second direction.
The display device provided by the embodiment of the application comprises the touch display panel provided by the embodiment of the application.
According to the touch display panel and the display device provided by the embodiment of the application, the touch display panel comprises the touch grid driving circuit electrically connected with the touch electrode rows and the first touch signal lines, so that the grid driving circuit can scan the touch electrode rows line by line, and each scanning line of the touch electrode rows transmits the touch signals transmitted by the first touch signal lines to the touch electrode row. And the number of pins bound with the first touch signal lines can be reduced, namely the number of the bound pins among the chip on film circuit board, the touch panel and the printed circuit board can be reduced, the difficulty of the binding process is reduced, and the yield of the binding process is improved. Correspondingly, the number of output pins of the touch driving chip can be reduced, and the complexity, cost and power consumption of the touch driving chip architecture can be reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a touch display panel according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of another touch display panel according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of a shift register in a touch display panel according to an embodiment of the present disclosure;
fig. 4 is a timing diagram corresponding to a shift register according to an embodiment of the present disclosure;
fig. 5 is a timing diagram of a gate driving circuit for outputting a touch driving signal from each shift register stage according to an embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of another touch display panel according to an embodiment of the present disclosure;
fig. 7 is a schematic structural diagram of another touch display panel according to an embodiment of the present disclosure;
fig. 8 is a schematic structural diagram of another touch display panel according to an embodiment of the present disclosure;
fig. 9 is a schematic structural diagram of another touch display panel according to an embodiment of the present disclosure;
fig. 10 is a schematic structural diagram of another touch display panel according to an embodiment of the present disclosure;
fig. 11 is a schematic structural diagram of another touch display panel according to an embodiment of the present disclosure;
fig. 12 is a schematic structural diagram of a display device according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings of the embodiments of the present application. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all embodiments. And the embodiments and features of the embodiments in the present application may be combined with each other without conflict. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the application without any inventive step, are within the scope of protection of the application.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. As used in this application, the terms "first," "second," and the like do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.
It should be noted that the sizes and shapes of the figures in the drawings are not to be considered true scale, but are merely intended to schematically illustrate the present disclosure. And the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.
It should be noted that, in the mutual capacitance type touch driving manner in the related art, one side of each row of touch electrodes needs to be electrically connected to the touch driving chip through one driving channel trace, and as the size of the folded product increases, the size of the touch panel also increases gradually, which inevitably results in an increase in the number of driving channel traces, and a large number of driving channel traces cause the frame to occupy a large width, the number of pins at the binding position is large, the occupied space at the binding electrode is large, the binding difficulty is increased, and also leads to an increase in traces in the chip on film circuit board and the printed circuit board, a complex structure of the touch driving chip, an increase in power consumption, and the like.
Based on the above problems in the related art, the present disclosure provides a touch display panel, as shown in fig. 1, the touch display panel includes a display area 4 and a peripheral area 5 outside the display area 4;
the touch display panel specifically includes: the display device comprises a display substrate and a touch substrate positioned on one side of the display substrate;
the touch substrate includes: a plurality of touch electrodes 6 located in the display area 4;
the plurality of touch electrodes 6 are divided into: a plurality of touch electrode rows 3 extending along the first direction X and arranged along the second direction Y, and a plurality of touch electrode columns 7 extending along the second direction Y and arranged along the first direction X; the first direction X intersects the second direction Y;
the display substrate includes: a touch gate driving circuit 8 located in the peripheral region 5 and electrically connected to the touch electrode row 3, and a first touch signal line Tx located in the peripheral region 5 and electrically connected to the touch gate driving circuit 8.
The touch display panel provided by the embodiment of the application comprises a touch gate driving circuit electrically connected with touch electrode rows and first touch signal lines, so that the gate driving circuit can scan the touch electrode rows line by line, and each scanning line of the touch electrode rows transmits touch signals transmitted by the first touch signal lines to the touch electrode row, thus only one first touch signal line electrically connected with the touch gate driving circuit needs to be arranged in the peripheral area on one side of the extending direction of the touch electrode rows, the number of the first touch signal lines arranged in the peripheral area can be greatly reduced, the size of the peripheral area of the touch substrate is reduced, narrow-frame display is facilitated, the number of pins bound with the first touch signal lines can be reduced, and the complexity of the structure and the power consumption of a touch driving chip electrically connected with the first touch signal lines are reduced.
It should be noted that fig. 1 illustrates an example in which the first direction X is perpendicular to the second direction Y.
In some embodiments, as shown in fig. 1, the touch gate driving circuit 8 and the first touch signal line Tx are only included at one side of the extending direction of the touch electrode row 3.
Alternatively, in some embodiments, as shown in fig. 2, the touch gate driving circuit 8 and the first touch signal line Tx are included on both sides of the extending direction of the touch electrode row 3.
In specific implementation, for a large-size touch display product, when the touch gate driving circuit and the first touch signal line are included on both sides of the extending direction of the touch electrode row, the efficiency and the sensitivity of touch detection of the touch display panel are improved.
In a specific implementation, when the two sides of the extending direction of the touch electrode rows include the touch gate driving circuits and the first touch signal lines, each row of touch electrode rows may be driven by the touch gate driving circuits on the left and right sides simultaneously, or each row of touch electrode rows may be driven by the touch gate driving circuits on the left and right sides alternately, which is not limited in this application.
In some embodiments, as shown in fig. 1 and fig. 2, the touch gate driving circuit 8 includes a plurality of cascaded shift registers GOA; the shift registers GOA are electrically connected with the touch electrode rows 3 in a one-to-one corresponding mode; the cascaded bit registers GOA are electrically connected with the first touch signal line Tx; the plurality of cascaded bit registers GOA and the first touch signal line Tx electrically connected thereto are located on the same side of the extending direction of the touch electrode row 3.
In the touch display panel provided in the embodiment of the present application, the touch gate driving circuit includes a plurality of cascade shift registers. At least one side of the touch electrode rows, the touch electrode rows are electrically connected with the cascaded shift registers in a one-to-one correspondence mode, therefore, the grid driving circuit can scan the touch electrode rows line by line, each scanning line of the touch electrode rows transmits the touch signals transmitted by the first touch signal lines to the touch electrode row through the shift registers, only one first touch signal line electrically connected with the shift registers needs to be arranged in the peripheral area on one side of the extending direction of the touch electrode rows, the number of the first touch signal lines arranged in the peripheral area can be greatly reduced, the size of the peripheral area of the touch substrate is reduced, narrow-frame display is facilitated, the number of pins bound with the first touch signal lines can be reduced, and the complexity of the structure and the power consumption of a touch driving chip electrically connected with the first touch signal lines are reduced.
In some embodiments, as shown in fig. 1 and 2, the first touch signal line Tx extends along the second direction Y.
In some embodiments, as shown in fig. 1 and fig. 2, the touch substrate further includes: and a plurality of second touch signal lines Rx electrically connected to the touch electrode rows 7 in a one-to-one correspondence, the second touch signal lines Rx extending from the display area 4 to the peripheral area 5 along the second direction Y.
In specific implementation, the touch display product further includes a touch driver chip bound to the touch display panel. The touch gate driving circuit, the first touch signal line Tx, and the second touch signal line Rx are electrically connected to the touch driving chip, so that the touch driving chip can provide a touch driving signal to the first touch signal line and provide a corresponding signal to the gate driving circuit, and the touch driving chip receives a touch sensing signal of the second touch signal line. In other words, in the touch stage, the gate driving circuit scans the touch electrode rows line by line according to the received signal of the touch driving chip, so that the touch electrode rows are sequentially conducted with the first touch signal line to input the touch driving signal, the touch electrode rows form a touch sensing signal and transmit the touch sensing signal to the touch driving chip through the second touch signal line, and the touch driving chip determines the position where touch occurs according to the touch sensing signal.
In some embodiments, as shown in fig. 1, 2, and 3, the shift register includes: a shift circuit 1, and a first control circuit 2;
the shift circuit 1 comprises an input signal end STV and a clock signal end CLK, and the output end of the shift circuit is electrically connected with the control end of the first control circuit 2; the shift circuit 1 is configured to: outputs a control signal to the first control circuit 2 in response to a start signal input from the input signal terminal STV and a clock signal input from the clock signal terminal CLK;
the input end of the first control circuit 2 is electrically connected with the first touch signal line Tx, and the output end of the first control circuit is electrically connected with one touch electrode row 3; the first control circuit 2 is configured to: in response to a control signal output by the output end of the shift circuit 1, transmitting a touch signal transmitted by the first touch signal line Tx to the touch electrode row 3;
in the first-stage shift register GOA, an input signal end STV of a shift circuit 1 is electrically connected with a starting signal end STV';
in the rest shift registers GOA, the input signal terminal STV of the shift circuit 1 is electrically connected to the output terminal of the shift circuit GOA of the previous shift register.
In the shift register provided in the embodiment of the application, the input end of the first control circuit is electrically connected to the first touch signal line, the output end of the first control circuit is electrically connected to the touch electrode row, and the first control circuit can transmit the touch signal transmitted by the first touch signal line to the touch electrode row under the control of the control signal output by the shift circuit, so as to realize the transmission of the touch signal. Each touch electrode row is electrically connected with at least one shift register, the touch electrode rows can be scanned line by line through the shift register, and each line of touch electrode rows is scanned, namely, the touch signals transmitted by the first touch signal lines are transmitted to the touch electrode rows through the shift register, so that only one first touch signal line electrically connected with the shift registers needs to be arranged on one side of the extending direction of the touch electrode rows, the number of the first touch signal lines can be greatly reduced, the size of the peripheral area of the touch display panel is reduced, the number of binding pins of the first touch signal lines is reduced, and the structural complexity and the power consumption of the touch driving chip are reduced.
In some embodiments, as shown in fig. 3, the shift circuit 1 includes: a first transistor T1, a second transistor T2, a third transistor T3, a fourth transistor T4, a fifth transistor T5, a sixth transistor T6, a seventh transistor T7, an eighth transistor T8, a first capacitor C1, and a second capacitor C2;
the clock signal terminals include a first clock signal terminal CLK1 and a second clock signal terminal CLK 2;
a control electrode of the first transistor T1 is electrically connected to the first clock signal terminal CLK1, a first terminal of the first transistor T1 is electrically connected to the input signal terminal STV, and a second terminal of the first transistor T1 is electrically connected to a control electrode of the second transistor T2, a second electrode of the seventh transistor T7, and a first electrode of the eighth transistor T8;
a first pole of the second transistor T2 is electrically connected to the first clock signal terminal CLK 1;
a control electrode of the third transistor T3 is electrically connected to the first clock signal terminal CLK1, a first electrode of the third transistor T3 is electrically connected to the first level signal terminal VGL, a second electrode of the third transistor T3 is electrically connected to the second electrode of the second transistor T2, a control electrode of the sixth transistor T6, a control electrode of the fourth transistor T4, and a first electrode of the second capacitor C2;
a first pole of the fourth transistor T4 and a second pole of the second capacitor C2 are electrically connected to the second level signal terminal VGH, and a second pole of the fourth transistor T4, a second pole of the first capacitor C1 and a second pole of the fifth transistor T5 are electrically connected to the first node N;
a first pole of the fifth transistor T8 is electrically connected to the second clock signal terminal CLK 2;
a first pole of the sixth transistor T6 is electrically connected to the second level signal terminal VGH, and a second pole of the sixth transistor T6 is electrically connected to the first pole of the seventh transistor T7;
a control electrode of the seventh transistor T7 is electrically connected to the second clock signal terminal CLK 2;
a control electrode of the eighth transistor T8 is electrically connected to the first level signal terminal VGL, and a second electrode of the eighth transistor T8 is electrically connected to a control electrode of the fifth transistor T5 and the first electrode of the first capacitor C1.
In some embodiments, as shown in fig. 3, the first control circuit 2 includes a ninth transistor T9;
a control electrode of the ninth transistor T9 is electrically connected to the output terminal of the shift circuit 1, a first electrode of the ninth transistor T9 is electrically connected to the first touch signal line Tx, and a second electrode of the ninth transistor T9 is electrically connected to one touch electrode row 3. In a specific implementation, as shown in fig. 3, the control electrode of the ninth transistor T9 is electrically connected to the first node N.
In some embodiments, the first transistor T1, the second transistor T2, the third transistor T3, the fourth transistor T4, the fifth transistor T5, the sixth transistor T6, the seventh transistor T7, the eighth transistor T8, and the ninth transistor T9 are all N-type transistors or all P-type transistors.
In some embodiments, as shown in fig. 3, the first transistor T1, the second transistor T2, the third transistor T3, the fourth transistor T4, the fifth transistor T5, the sixth transistor T6, the seventh transistor T7, the eighth transistor T8, and the ninth transistor T9 are P-type transistors.
In some embodiments, the first level signal terminal VGL inputs a low level signal, and the second level signal terminal VGH inputs a high level signal.
Next, taking the shift register shown in fig. 3 as an example, an operation process of the shift register provided in the embodiment of the present application is illustrated, and a timing chart of the shift register shown in fig. 3 is shown in fig. 4. Accordingly, fig. 5 shows a timing chart of the touch driving signal output from each shift register of the gate driving circuit including the plurality of shift registers shown in fig. 3.
In the first stage T1, the start signal STV input from the input signal terminal STV and the first clock signal CLK1 input from the first clock signal terminal CLK1 are low level signals, the second clock signal CLK2 input from the second clock signal terminal CLK1 is high level signal, the first transistor T1, the second transistor T2, the third transistor T3, the eighth transistor T8, the sixth transistor T6, the fourth transistor T4, and the fifth transistor T5 are turned on, the seventh transistor T7 is turned off, the first node N outputs a high level signal, and the ninth transistor T9 is turned off.
In the second stage, at T2, the start signal STV input from the input signal terminal STV, the first clock signal CLK1 input from the first clock signal terminal CLK1 are high level signals, the second clock signal CLK2 input from the second clock signal terminal CLK1 is low level signals, the first transistor T1, the third transistor T3, the sixth transistor T6, and the fourth transistor T4 are turned off, the second transistor T2, the eighth transistor T8, the seventh transistor T7, and the fifth transistor T5 are turned on, the first node N outputs a low level signal, the ninth transistor T9 is turned on, and a signal of the touch signal line is transmitted to the touch electrode row through the ninth transistor T9.
In the third stage T3 and the fifth stage T5, the start signal STV input from the input signal terminal STV and the second clock signal CLK2 input from the second clock signal terminal CLK1 are high level signals, the first clock signal CLK1 input from the first clock signal terminal CLK1 is low level signal, the first transistor T1, the third transistor T3, the eighth transistor T8, the sixth transistor T6, and the fifth transistor T5 are turned on, the second transistor T2, the seventh transistor T7, and the fourth transistor T4 are turned off, the first node N outputs a high level signal, and the ninth transistor T9 is turned off.
In the fourth stage T4, the start signal STV input from the input signal terminal STV, the first clock signal CLK1 input from the first clock signal terminal CLK1 are high level signals, the second clock signal CLK2 input from the second clock signal terminal CLK1 is low level signals, the first transistor T1, the third transistor T3, the second transistor T2, and the fifth transistor T5 are turned off, the eighth transistor T8, the sixth transistor T6, the seventh transistor T7, and the fourth transistor T4 are turned on, the first node N outputs a high level signal, and the ninth transistor T9 is turned off.
When the touch display panel provided in the embodiment of the application includes the plurality of shift registers shown in fig. 3, the plurality of cascaded shift registers can not only scan a plurality of touch electrode rows line by line, but also adjust the voltage of the driving signal of the first touch signal line in real time, that is, adjust the voltage of the touch electrode row in real time, and realize fine control of the driving signal of the touch electrode row, so that the touch resolution and the touch response speed of the touch substrate can be improved, and power consumption can be saved.
In some embodiments, as shown in fig. 1, fig. 2, and fig. 6, the touch substrate 10 further includes: a plurality of first connecting leads 9 extending from the display region 4 to the peripheral region 5;
as shown in fig. 6, the display substrate 11 specifically includes: the touch control panel comprises a substrate base plate 12, a driving circuit layer 13 positioned on one side of the substrate base plate 12 facing the touch control base plate 10, a light-emitting device layer 14 and a retaining wall structure 15 positioned on one side of the driving circuit layer 13 departing from the substrate base plate 12, and an encapsulation layer 16 positioned on one side of the light-emitting device layer 14 departing from the driving circuit layer 13;
the driving circuit layer 13 includes a touch gate driving circuit 8;
the driving circuit layer 13 specifically includes: a first conductive layer 17, a second conductive layer 18 on the first conductive layer 17 and the light emitting device layer 14 side;
the first conductive layer 17 comprises the control electrode 19 of the ninth transistor T9; the second conductive layer 18 includes the first pole 20 and the second pole 21 of the ninth transistor T9;
the encapsulation layer 16 exposes at least a portion of the second pole 21 of the ninth transistor T9;
one end of each first connecting lead 9 is electrically connected to one touch electrode row 3, and the other end of each first connecting lead 9 extends to the peripheral area 5 and is electrically connected to the second electrode 21 of the ninth transistor T9 exposed by the package layer 16.
In specific implementation, the touch display panel provided in the embodiment of the present application may directly fabricate the touch substrate On the package Layer by using a Flexible Multi-Layer integrated touch technology (FMLOC).
The touch display panel provided by the embodiment of the application is characterized in that a touch gate driving circuit is manufactured on a driving circuit layer of a display substrate, a packaging layer formed behind the driving circuit layer exposes a second pole of a ninth transistor in the touch gate driving circuit, and a touch substrate is manufactured on the packaging layer subsequently. In addition, according to the touch display panel provided by the embodiment of the application, the touch gate driving circuit is arranged on the display substrate, and compared with the design that the touch substrate comprises the touch gate driving circuit, the number of the first touch signal lines can be reduced, and the difficulty of manufacturing the touch substrate on the packaging layer is avoided.
In fig. 6, the example in which the encapsulation layer 16 completely exposes the second pole 21 of the ninth transistor T9 is illustrated. In an implementation, the encapsulation layer may also cover a partial region of the second edge of the ninth transistor.
In some embodiments, as shown in fig. 6, the driving circuit layer 13 further includes: a display gate driving circuit 22 provided on the same layer as the touch gate driving circuit 8; the display gate driving circuit 22 is located between the touch gate driving circuit 8 and the display region 4.
In some embodiments, as shown in fig. 6, the retaining wall structure 15 is located in the peripheral region 5 and surrounds the display region 4, and the retaining wall structure 15 at least includes a first retaining wall 23;
the peripheral zone 5 also includes crack stop walls 52;
the orthographic projection of the touch control grid electrode driving circuit 8 on the substrate base plate 12 is positioned between the orthographic projection of the first retaining wall 23 on the substrate base plate 12 and the orthographic projection of the crack blocking retaining wall 52 on the substrate base plate 12;
the orthographic projection of the display gate driving circuit 22 on the substrate 12 is positioned on one side of the orthographic projection of the first retaining wall 23 on the substrate 12, which is close to the display area 4.
According to the touch display panel provided by the embodiment of the application, each film layer of the touch gate driving circuit and each film layer of the display gate driving circuit are arranged on the same layer, so that the number of first touch signal lines can be reduced by using the touch gate driving circuit, and the increase of the preparation process flow of the touch display panel is avoided. And the touch control grid electrode driving circuit is positioned on one side of the display grid electrode driving circuit, which is far away from the display area, and is positioned in the area between the first retaining wall and the crack blocking retaining wall, so that the space of the peripheral area can be fully utilized, the number of the first touch control signal lines is reduced by using the touch control grid electrode driving circuit, and the size of the peripheral area is prevented from being increased.
In some embodiments, as shown in fig. 6, the retaining wall structure 15 further includes: the first retaining wall 23 is a second retaining wall 24 on the side away from the display area 4.
In specific implementation, as shown in fig. 6, the orthographic projection of the second retaining wall 24 on the substrate 12 falls into the orthographic projection area of the touch gate driving circuit 8 on the substrate 12. Therefore, the increase of the size of the peripheral area can be further avoided while the reduction of the number of the first touch signal lines by using the touch gate driving circuit is realized.
In a specific implementation, the display gate driving circuit also includes a plurality of cascaded shift registers, and the shift registers included in the display gate driving circuit may include a plurality of transistors and capacitors. The specific circuit composition of the shift register included in the display gate driving circuit may be the same as the specific circuit composition of the shift register included in the touch gate driving circuit, and the specific circuit composition of the shift register included in the display gate driving circuit may also be different from the specific circuit composition of the shift register included in the touch gate driving circuit, which is not limited in this application.
In specific implementation, the display area of the touch display panel includes a plurality of sub-pixels arranged in an array, and each sub-pixel includes a pixel driving circuit and an electroluminescent device electrically connected to the pixel driving circuit. Namely, the driving circuit layer further comprises a pixel driving circuit arranged in an array, and the light emitting device layer comprises a plurality of electroluminescent devices arranged in an array. The pixel driving circuit may also include a plurality of transistors and capacitors. The electroluminescent device may be, for example, an organic light emitting diode device or a quantum dot light emitting diode device.
In a specific implementation, the first conductive layer further comprises: the control electrodes of all transistors in the pixel driving circuit and the display grid driving circuit; the second conductive layer further includes: the first pole and the second pole of each transistor in the pixel driving circuit and the display grid driving circuit.
In some embodiments, as shown in fig. 6, the light emitting device layer includes: an anode layer 25, a light-emitting functional layer 26, and a cathode layer 27; anode layer 25 includes: an anode 28 of the electroluminescent device, and a cathode contact layer 29 electrically connected to cathode layer 27;
the driving circuit layer 13 further includes: a first power supply signal line ELVSS electrically connected to the cathode contact layer 29; the orthographic projection of the first power supply signal line ELVSS on the base substrate 12 covers at least an area between the orthographic projection of the display gate driving circuit 22 on the base substrate 12 and the orthographic projection of the touch gate driving circuit 8 on the base substrate 12.
In a specific implementation, as shown in fig. 6, the orthographic projection of the first power source signal line ELVSS on the substrate 12 covers a partial area of the orthographic projection of the display gate driving circuit 22 on the substrate 12; and the orthographic projection of the first power signal line ELVSS on the substrate 12 covers a partial area of the orthographic projection of the touch gate driving circuit 8 on the substrate 12.
In specific implementation, as shown in fig. 6, the driving circuit layer further includes: an active layer 33 between the substrate base plate 12 and the first conductive layer 17, a first gate insulating layer 34 between the active layer 33 and the first conductive layer 17, a second gate insulating layer 36 between the first conductive layer 17 and the second conductive layer 18, a third conductive layer 35 between the second gate insulating layer 36 and the second conductive layer 18, and an interlayer insulating layer 37 between the third conductive layer 35 and the second conductive layer 18. Wherein the active layer includes: the display device comprises a pixel driving circuit, a display grid driving circuit and an active layer of each transistor in a touch grid driving circuit.
In a specific implementation, the first conductive layer further comprises: the first electrode c1 of each capacitor in the pixel driving circuit, the display grid driving circuit and the touch grid driving circuit; the third conductive layer includes: the second electrode c2 of each capacitor in the pixel driving circuit, the display gate driving circuit and the touch gate driving circuit.
In practical implementation, as shown in fig. 6, the display substrate 11 further includes: a second buffer layer 32 between the base substrate 12 and the active layer 33, a planarization layer 38 between the second conductive layer 18 and the light emitting device layer 14, a pixel defining layer 46 on a side of the anode layer 25 facing away from the planarization layer 38, and a spacer layer 47. In a specific implementation, the anode of the electroluminescent device is electrically connected to the second conductive layer through a via that penetrates the planarization layer. The first retaining wall and the second retaining wall respectively comprise a first part which is arranged on the same layer as the pixel defining layer and a second part which is positioned on one side of the first part, which is deviated from the substrate base plate, and is arranged on the same layer as the spacer layer. In practical implementation, as shown in fig. 6, on the side of the first retaining wall 23 close to the display area 4, the spacer layer 47 forms a crack stop structure 51, i.e., a plurality of grooves are formed in the spacer layer 47 in the area through the thickness of the crack stop structure. In a specific implementation, after the planarization layer is formed, the anode layer is patterned, the pixel defining layer and the first portion of the barrier wall structure are patterned, then the spacer layer and the second portion of the barrier wall structure are patterned, and then the light emitting function layer and the cathode layer are sequentially formed.
In specific implementation, as shown in fig. 6, the encapsulation layer 16 specifically includes: a first inorganic encapsulation layer 39, a second inorganic encapsulation layer 40, and an organic encapsulation layer 41 between the first inorganic encapsulation layer 39 and the second inorganic encapsulation layer 40. The organic encapsulation layer 41 extends to a side of the first retaining wall 23 close to the display region 4. I.e. the retaining wall structure is used to block the extension of the organic encapsulation layer. The first inorganic encapsulation layer 39 and the second inorganic encapsulation layer 40 both extend to the side of the second retaining wall 24 facing away from the first retaining wall 23, and the first inorganic encapsulation layer 39 and the second inorganic encapsulation layer 40 expose the second pole 21 of the ninth transistor T9.
In some embodiments, as shown in fig. 7, anode layer 25 further includes first connection pads 30;
at least a part of the second pole 21 of the ninth transistor T9 exposed by the encapsulation layer 16 is away from the substrate 12, and the first connection pad 30 is in contact with the second pole 21 of the ninth transistor T9; the first connection lead 9 extends from the display region 4 to the peripheral region 5 to contact the first connection pad 30.
In some embodiments, as shown in fig. 8 and 9, the peripheral area 5 further includes: and a protective layer 31 covering the edge and side of the second electrode 21 of the ninth transistor T9.
According to the touch display panel provided by the embodiment of the application, the edge of the second pole of the ninth transistor is covered by the protection layer, so that the protection layer can protect the edge of the second pole of the ninth transistor, and the phenomenon that the subsequent process damages the second pole of the ninth transistor to influence signal transmission is avoided.
In some embodiments, the material of the protective layer comprises an inorganic insulating material.
In some embodiments, the material of the protective layer comprises silicon oxynitride.
In a specific implementation, for example, after the second conductive layer is patterned, a protective layer covering the edge of the second electrode of the ninth transistor is formed, and then each film layer on the second conductive layer is formed.
In fig. 7 to 9, the second conductive layer, which is a single conductive layer, is provided between the interlayer insulating layer 37 and the planarization layer 38, and the anode is electrically connected to the electrode of the pixel driving circuit transistor provided in the second conductive layer.
Of course, in practical implementation, as shown in fig. 10 and 11, the driving circuit layer further includes: fourth conductive layer 49 between planarization layer 38 and second conductive layer 18, and passivation protection layer 50 between fourth conductive layer 19 and second conductive layer 18. The fourth conductive layer includes, for example, a first connection electrode electrically connected to both the second conductive layer and the anode. As shown in fig. 10 and 11, the fourth conductive layer 49 may further include: and a second connection electrode 53 electrically connected to both the cathode contact layer 29 and the first power signal line ELVSS.
In some embodiments, as shown in fig. 6 to 11, the touch substrate 10 specifically includes: the light emitting device includes a first buffer layer 42 on a side of the encapsulation layer 16 facing away from the light emitting device layer 14, a first touch electrode layer 43 on a side of the first buffer layer 42 facing away from the encapsulation layer 16, a first insulating layer 44 on a side of the first touch electrode layer 43 facing away from the first buffer layer 42, and a second touch electrode layer 45 on a side of the first insulating layer 44 facing away from the first touch electrode layer 43.
In some embodiments, as shown in fig. 6 to 11, the second touch electrode layer 45 includes a first connection lead 9.
In some embodiments, as shown in fig. 6 to 11, the first buffer layer 42 extends from the display region 4 to the peripheral region 5 to cover the edge of the encapsulation layer 16;
the first insulating layer 44 extends from the display region 4 to the peripheral region 5 to cover the edge of the first buffer layer 42.
Therefore, the number of steps which are passed by the first connecting lead and extend to the peripheral region can be reduced, the situation that the first connecting lead extends to the peripheral region and is connected with the second pole of the ninth transistor in an overlapping mode to form a short line is avoided, and the manufacturing yield can be improved.
In some embodiments, as shown in fig. 6 to 11, the first inorganic encapsulation layer 41 extends from the display area 4 to the peripheral area 5 to cover the edge of the second inorganic encapsulation layer 39. Therefore, the number of steps which are extended to the peripheral region by the first buffer layer can be reduced, the number of steps which are extended to the peripheral region by the first connecting lead can be reduced, the situation that the first connecting lead is extended to the peripheral region and is in short line connection with the second pole of the ninth transistor in an overlapping mode is further avoided, and the manufacturing yield can be improved.
Alternatively, in some embodiments, the first touch electrode layer may include a first connection lead.
It should be noted that, in the specific implementation, the touch electrodes in the touch electrode row and the touch electrode column may be respectively located in different touch electrode layers. The touch electrodes in the touch electrode rows and the touch electrodes in the touch electrode columns are located in the same touch electrode layer, and when the touch electrodes in the touch electrode rows and the touch electrodes in the touch electrode columns are located in the same touch electrode layer, the touch electrodes in the touch electrode rows or the touch electrodes in the touch electrode columns need to be directly connected by the bridging wires. Alternatively, the second touch electrode layer may include a bridging lead, and the first touch electrode layer includes touch electrodes in a touch electrode row and touch electrodes in a touch electrode column, so as to facilitate electrical connection between the first connecting lead and the touch electrodes in the touch electrode row, for example, the first touch electrode layer may further include a first connecting lead.
In some embodiments, as shown in fig. 6 to 11, the touch display panel further includes: the touch protection layer 48 covers the touch substrate 10.
The display device provided by the embodiment of the application comprises the touch display panel provided by the embodiment of the application.
In some embodiments, as shown in fig. 12, the display device further includes a chip on film circuit board COF and a printed circuit board PCB. The printed circuit board PCB is bound with the touch display panel through the chip on film circuit board COF, wherein the peripheral region 5 is located on one side of the display region 4 in the second direction X. In some embodiments, as shown in fig. 12, the printed circuit board PCB includes a touch driving chip IC. The touch driving chip IC provides a touch signal to the touch display panel and receives a touch sensing signal through the printed circuit board and the chip on film circuit board COF.
In the display device provided in the embodiment of the present application, the touch display panel includes the touch gate driving circuit, and the touch gate driving circuit includes a plurality of cascade shift registers. At least one side of the touch electrode rows, the touch electrode rows are electrically connected with the cascaded shift registers in a one-to-one correspondence mode, therefore, the grid driving circuit can scan the touch electrode rows line by line, each scanning line of touch electrode rows transmits touch signals transmitted by the first touch signal lines to the touch electrode rows through the shift registers, only one first touch signal line electrically connected with the shift registers needs to be arranged in the peripheral area on one side of the extending direction of the touch electrode rows, the number of the first touch signal lines arranged in the peripheral area can be greatly reduced, the size of the peripheral area of the touch substrate is reduced, and narrow-frame display is facilitated. And the number of pins bound with the first touch signal lines can be reduced, namely the number of the bound pins among the chip on film circuit board, the touch panel and the printed circuit board can be reduced, the difficulty of the binding process is reduced, and the yield of the binding process is improved. Correspondingly, the number of output pins of the touch driving chip can be reduced, and the complexity, cost and power consumption of the touch driving chip architecture can be reduced.
It should be noted that, in the specific implementation, the touch display panel may be bound to one printed circuit board, or may be bound to a plurality of printed circuit boards. In fig. 12, the touch display panel and the plurality of printed circuit boards are bound together as an example for illustration.
The display device provided by the embodiment of the application is as follows: any product or component with a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like. Other essential components of the display device are understood by those skilled in the art, and are not described herein or should not be construed as limiting the present application. The implementation of the display device can refer to the embodiments of the shift register and the touch display panel, and repeated descriptions are omitted.
In summary, the touch display panel and the display device provided in the embodiments of the present application include the touch gate driving circuit, and the touch gate driving circuit includes the plurality of cascaded shift registers. At least one side of the touch electrode rows, the touch electrode rows are electrically connected with the cascaded shift registers in a one-to-one correspondence mode, therefore, the grid driving circuit can scan the touch electrode rows line by line, each scanning line of touch electrode rows transmits touch signals transmitted by the first touch signal lines to the touch electrode rows through the shift registers, only one first touch signal line electrically connected with the shift registers needs to be arranged in the peripheral area on one side of the extending direction of the touch electrode rows, the number of the first touch signal lines arranged in the peripheral area can be greatly reduced, the size of the peripheral area of the touch substrate is reduced, and narrow-frame display is facilitated. And the number of pins bound with the first touch signal lines can be reduced, namely the number of the bound pins among the chip on film circuit board, the touch panel and the printed circuit board can be reduced, the difficulty of the binding process is reduced, and the yield of the binding process is improved. Correspondingly, the number of output pins of the touch driving chip can be reduced, and the complexity, cost and power consumption of the touch driving chip architecture can be reduced.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (15)
1. The touch display panel is characterized by comprising a display area and a peripheral area outside the display area;
the touch display panel specifically includes: the touch control display device comprises a display substrate and a touch control substrate positioned on one side of the display substrate;
the touch substrate includes: a plurality of touch electrodes located in the display area; the touch electrodes are divided into: the touch control device comprises a plurality of touch control electrode rows extending along a first direction and arranged along a second direction, and a plurality of touch control electrode columns extending along the second direction and arranged along the first direction; the first direction intersects the second direction;
the display substrate includes: the touch control device comprises a touch control grid electrode driving circuit which is positioned in the peripheral area and electrically connected with the touch control electrode row, and a first touch control signal line which is positioned in the peripheral area and electrically connected with the touch control grid electrode driving circuit.
2. The touch display panel according to claim 1, wherein the touch gate driving circuit and the first touch signal line are included on both sides of the extending direction of the touch electrode row.
3. The touch display panel according to claim 1 or 2, wherein the touch gate driving circuit comprises a plurality of cascaded shift registers; the shift registers are electrically connected with the touch electrode rows in a one-to-one correspondence manner; the cascaded bit registers are electrically connected with the first touch signal line; the plurality of cascaded bit registers and the first touch signal line electrically connected with the bit registers are positioned on the same side of the extending direction of the touch electrode row.
4. The touch display panel according to claim 3, wherein the shift register comprises: a shift circuit, and a first control circuit;
the shift circuit comprises an input signal end and a clock signal end, and the output end of the shift circuit is electrically connected with the control end of the first control circuit; the shift circuit is configured to: responding to a starting signal input by the input signal end and a clock signal input by the clock signal end, and outputting a control signal to the first control circuit;
the input end of the first control circuit is electrically connected with the first touch signal line, and the output end of the first control circuit is electrically connected with one touch electrode row; the first control circuit is configured to: responding to the control signal output by the output end of the shift circuit, and transmitting the touch signal transmitted by the first touch signal line to the touch electrode row;
in the first stage of the shift register, an input signal end of the shift circuit is electrically connected with a starting signal end;
in the rest of the shift registers, the input signal end of the shift circuit is electrically connected with the output end of the shift circuit of the shift register of the previous stage.
5. The touch display panel of claim 4, wherein the shift circuit comprises: a first transistor, a second transistor, a third transistor, a fourth transistor, a fifth transistor, a sixth transistor, a seventh transistor, an eighth transistor, a first capacitor, and a second capacitor;
a control electrode of the first transistor is electrically connected to a first clock signal terminal, a first terminal of the first transistor is electrically connected to the input signal terminal, and a second terminal of the first transistor is electrically connected to a control electrode of the second transistor, a second electrode of the seventh transistor, and a first electrode of the eighth transistor;
a first electrode of the second transistor is electrically connected with the first clock signal terminal;
a control electrode of the third transistor is electrically connected to the first clock signal terminal, a first electrode of the third transistor is electrically connected to a first level signal terminal, and a second electrode of the third transistor is electrically connected to a second electrode of the second transistor, a control electrode of the sixth transistor, a control electrode of the fourth transistor, and a first electrode of the second capacitor;
a control electrode of the eighth transistor is electrically connected to the first level signal terminal, and a second electrode of the eighth transistor is electrically connected to a control electrode of the fifth transistor and the first electrode of the first capacitor;
a first electrode of the sixth transistor is electrically connected to a second level signal terminal, and a second electrode of the sixth transistor is electrically connected to a first electrode of the seventh transistor;
the control electrode of the seventh transistor is electrically connected with the second clock signal end;
a first electrode of the fourth transistor and a second electrode of the second capacitor are electrically connected to the second level signal terminal, and a second electrode of the fourth transistor, a second electrode of the first capacitor, and a second electrode of the fifth transistor are electrically connected to the first node;
a first electrode of the fifth transistor is electrically connected to the second clock signal terminal.
6. The touch display panel according to claim 4, wherein the first control circuit comprises a ninth transistor;
a control electrode of the ninth transistor is electrically connected to an output end of the shift circuit, a first electrode of the ninth transistor is electrically connected to the first touch signal line, and a second electrode of the ninth transistor is electrically connected to one of the touch electrode rows.
7. The touch display panel of claim 6, wherein the touch substrate further comprises: a plurality of first connecting leads extending from the display region to the peripheral region;
the display substrate specifically includes: the touch control device comprises a substrate, a driving circuit layer, a light-emitting device layer, a retaining wall structure and a packaging layer, wherein the driving circuit layer is positioned on one side, facing the touch control substrate, of the substrate, the light-emitting device layer and the retaining wall structure are positioned on one side, away from the substrate, of the driving circuit layer, and the packaging layer is positioned on one side, away from the driving circuit layer, of the light-emitting device layer;
the driving circuit layer comprises the touch control grid electrode driving circuit;
the driving circuit layer specifically includes: a first conductive layer, a second conductive layer positioned at one side of the first conductive layer and the light emitting device layer;
the first conductive layer includes a control electrode of the ninth transistor; the second conductive layer includes a first pole and a second pole of the ninth transistor;
the packaging layer exposes at least part of the second pole of the ninth transistor;
one end of each first connecting lead is electrically connected with one touch electrode row, and the other end of each first connecting lead extends to the peripheral area and is electrically connected with the second electrode of the ninth transistor exposed out of the packaging layer.
8. The touch display panel of claim 7, wherein the driving circuit layer further comprises: the display grid driving circuit is arranged on the same layer as the touch grid driving circuit; the display grid driving circuit is located between the touch grid driving circuit and the display area.
9. The touch display panel according to claim 8, wherein the dam structures are located in the peripheral region and surround the display region, and the dam structures at least include a first dam;
the peripheral area further comprises a crack blocking retaining wall;
the orthographic projection of the touch control grid electrode driving circuit on the substrate base plate is positioned between the orthographic projection of the first retaining wall on the substrate base plate and the orthographic projection of the crack blocking retaining wall on the substrate base plate;
the orthographic projection of the display grid electrode driving circuit on the substrate base plate is located on one side, close to the display area, of the orthographic projection of the first retaining wall on the substrate base plate.
10. The touch display panel of claim 9, wherein the light emitting device layer comprises: an anode layer, a light emitting functional layer, and a cathode layer; the anode layer includes a cathode contact layer electrically connected to the cathode layer;
the driving circuit layer further includes: a first power signal line electrically connected to the cathode contact layer; the orthographic projection of the first power supply signal line on the substrate at least covers the area between the orthographic projection of the display gate driving circuit on the substrate and the orthographic projection of the touch control gate driving circuit on the substrate.
11. The touch display panel of claim 10, wherein the anode layer further comprises a first connection pad;
at least part of the exposed second pole of the ninth transistor on the side, away from the substrate, of the packaging layer is in contact with the first connecting pad; the first connecting lead extends from the display area to the peripheral area to be in contact with the first connecting pad.
12. The touch display panel according to any one of claims 7 to 11, wherein the peripheral area further comprises: and the protective layer covers the edge and the side face of the second pole of the ninth transistor.
13. The touch display panel according to any one of claims 7 to 11, wherein the touch substrate specifically comprises: the light-emitting device comprises a packaging layer, a first buffer layer, a first touch electrode layer, a first insulating layer and a second touch electrode layer, wherein the first buffer layer is positioned on one side, away from the light-emitting device layer, of the packaging layer;
the second touch electrode layer comprises the first connecting lead;
the first buffer layer extends from the display area to the peripheral area and wraps the edge of the packaging layer;
the first insulating layer extends from the display area to the peripheral area and wraps the edge of the first buffer layer.
14. The touch display panel according to claim 1, further comprising: and a plurality of second touch signal lines which are electrically connected with the touch electrode rows in a one-to-one correspondence manner, wherein the second touch signal lines extend from the display area to the peripheral area along the second direction.
15. A display device comprising the touch display panel according to any one of claims 1 to 14.
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| CN114265524B (en) * | 2021-12-17 | 2023-08-22 | 武汉华星光电半导体显示技术有限公司 | Display panel |
| CN114582253A (en) * | 2022-03-07 | 2022-06-03 | 京东方科技集团股份有限公司 | Display substrate, preparation method thereof and display device |
| CN114582253B (en) * | 2022-03-07 | 2023-11-10 | 京东方科技集团股份有限公司 | Display substrate, preparation method thereof and display device |
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