CN114942709A - Touch display screen and touch display equipment - Google Patents
Touch display screen and touch display equipment Download PDFInfo
- Publication number
- CN114942709A CN114942709A CN202210632261.XA CN202210632261A CN114942709A CN 114942709 A CN114942709 A CN 114942709A CN 202210632261 A CN202210632261 A CN 202210632261A CN 114942709 A CN114942709 A CN 114942709A
- Authority
- CN
- China
- Prior art keywords
- touch
- display screen
- pixel
- layer
- lines
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000758 substrate Substances 0.000 claims abstract description 8
- 230000004044 response Effects 0.000 claims abstract description 3
- 238000003491 array Methods 0.000 claims description 27
- 239000000463 material Substances 0.000 claims description 6
- 239000010410 layer Substances 0.000 description 95
- 238000010586 diagram Methods 0.000 description 26
- 230000003071 parasitic effect Effects 0.000 description 11
- 230000000694 effects Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 6
- 239000003990 capacitor Substances 0.000 description 5
- 239000010408 film Substances 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 4
- 239000004642 Polyimide Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000011229 interlayer Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229920001721 polyimide Polymers 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 230000003190 augmentative effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- -1 polyethylene terephthalate Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 239000002096 quantum dot Substances 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—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
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
- G06F3/04164—Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04112—Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The embodiment of the application relates to a touch-control display screen and touch-control display device, the touch-control display screen, including range upon range of drive circuit layer, luminescent device layer and the touch-control response layer that sets gradually, the touch-control display screen includes: a plurality of light emitting devices disposed on the light emitting device layer; the plurality of first pixel circuits are arranged on the driving circuit layer, are respectively connected with the plurality of light-emitting devices in a one-to-one correspondence manner, and are used for driving the connected light-emitting devices to emit light; the first touch control lines are arranged on the driving circuit layer; the touch control sensing layer is arranged on the substrate, the second touch control lines are arranged on the touch control sensing layer, the extending directions of the second touch control lines are different from those of the first touch control lines, one of the first touch control lines and the second touch control lines is used for transmitting touch control transmitting signals, and the other one of the first touch control lines and the second touch control lines is used for transmitting touch control receiving signals.
Description
Technical Field
The embodiment of the application relates to the technical field of display, in particular to a touch display screen and touch display equipment.
Background
With the continuous development of touch display technology, touch display screens are applied to more and more electronic devices. However, the touch display screen also increases the size of the electronic device, and the user has a demand for the electronic device to have a smaller size. Therefore, it is desirable to provide a touch display screen with a small size.
Disclosure of Invention
In view of the above, it is necessary to provide a touch display screen and a touch display device with smaller volume.
The utility model provides a touch-control display screen, includes range upon range of drive circuit layer, luminescent device layer and the touch-control response layer that sets gradually, touch-control display screen includes:
a plurality of light emitting devices disposed on the light emitting device layer;
the plurality of first pixel circuits are arranged on the driving circuit layer, are respectively connected with the plurality of light-emitting devices in a one-to-one correspondence manner, and are used for driving the connected light-emitting devices to emit light;
the first touch control lines are arranged on the driving circuit layer;
the touch control sensing layer is arranged on the substrate, the second touch control lines are arranged on the touch control sensing layer, the extending directions of the second touch control lines are different from those of the first touch control lines, one of the first touch control lines and the second touch control lines is used for transmitting touch control transmitting signals, and the other one of the first touch control lines and the second touch control lines is used for transmitting touch control receiving signals.
A touch display device comprises the touch display screen.
According to the touch display screen and the touch display equipment, the first touch line positioned on the driving circuit layer and the second touch line positioned on the touch induction layer are respectively connected with two electrodes of the touch parasitic capacitor so as to transmit the received and sent touch signals. And the light-emitting device layer between the driving circuit layer and the touch sensing layer is used as a dielectric layer of the touch parasitic capacitor, so that the structure of the touch parasitic capacitor is formed together. When the user does not perform the touch operation, the detected capacitance value between the emitter and the receiver is unchanged; when a user performs a touch operation, the detected capacitance value between the emitter and the receiver changes, so that the touch operation is sensed. In the application, the first touch line and the first pixel circuit are arranged on the same layer, that is, the first touch line borrows part of space in the driving circuit layer where the first pixel circuit is located, so that the first touch line can be prevented from independently occupying a film layer, the overall thickness of the touch display screen is effectively reduced, and the size of the touch display screen is further reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments or related technologies of the present application, the drawings needed to be used in the description of the embodiments or related technologies are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic cross-sectional view of a touch display screen according to an embodiment;
FIG. 2 is a schematic structural diagram of a first touch line and a second touch line according to an embodiment;
FIG. 3 is a schematic diagram of a touch signal according to an embodiment;
FIG. 4 is a schematic diagram illustrating a touch principle according to an embodiment;
FIG. 5 is a schematic arrangement diagram of a pixel circuit according to an embodiment;
FIG. 6 is a diagram illustrating an arrangement of data signal lines according to the embodiment of FIG. 5;
FIG. 7 is a diagram illustrating an arrangement of touch lines according to the embodiment of FIG. 6;
FIG. 8 is a second schematic layout diagram of a pixel circuit according to an embodiment;
FIG. 9 is a schematic diagram illustrating an arrangement of scan lines corresponding to the embodiment of FIG. 8;
FIG. 10 is a diagram illustrating an arrangement of touch lines according to the embodiment of FIG. 9;
fig. 11 is a schematic structural diagram of a cathode layer according to an embodiment;
fig. 12 is a second schematic structural view of a cathode layer according to an embodiment;
FIG. 13 is a partial schematic structural diagram of an arrangement of light emitting devices according to an embodiment;
FIG. 14 is a schematic view of a partial structure of a touch display panel formed by combining each pixel circuit of the embodiment in FIG. 5 with the light emitting device of the embodiment in FIG. 13;
FIG. 15 is a schematic cross-sectional view of a driver circuit layer and an anode layer of an embodiment;
fig. 16 is a third schematic structural diagram of a pixel circuit according to an embodiment.
Element number description:
a driving circuit layer: 100, respectively; a first pixel array: 110; the first pixel circuit: 111; first touch line: 120 of a solvent; a second pixel array: 130, 130; light-emitting device layer: 200 of a carrier; a light emitting device: 210; touch control induction layer: 300, respectively; substrate layer: 400, respectively; a flat layer: 500, a step of; a first gate electrode: 601; a first source electrode: 602; a first drain electrode: 603; a source contact structure: 604; a drain contact structure: 605; first gate insulating layer: 614; interlayer insulating layer: 615; a planarization layer: 616; first array region: 11; a second array region: 12.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
It will be understood that, as used herein, the terms "first," "second," and the like may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another. For example, the first touch line 120 may be referred to as a second touch line, and similarly, the second touch line may be referred to as the first touch line 120, without departing from the scope of the present application. The first touch line 120 and the second touch line are both touch lines, but they are not the same touch line.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. In the description of the present application, "a number" means at least one, such as one, two, etc., unless specifically limited otherwise.
The embodiment of the application provides a touch display screen, which is applied to touch display equipment with a narrow frame. The touch display device may be a smartphone, a tablet, a gaming device, an Augmented Reality (AR) device, a notebook, a desktop computing device, a wearable device, or the like. For convenience of understanding, the touch display device is exemplified as a mobile phone in the following.
Fig. 1 is a schematic cross-sectional view of a touch display screen according to an embodiment, and referring to fig. 1, the touch display screen includes a driving circuit layer 100, a light emitting device layer 200, and a touch sensing layer 300, which are stacked in sequence. The driving circuit layer 100 may be disposed on a substrate, which may be a Polyimide (PI) substrate, for example. The touch sensing layer 300 may further have a planarization layer on the surface thereof, and the embodiment is not limited thereto. The touch display screen includes a plurality of light emitting devices 210, a plurality of first pixel circuits 111, a plurality of first touch lines 120, and a plurality of second touch lines. It should be noted that, since the cross-sectional direction is the same as the extending direction of the second touch line, reference numerals of the second touch line are not shown in fig. 1, but it can be understood that one second touch line is disposed at the cross-sectional position in the touch sensing layer 300.
Wherein a plurality of light emitting devices 210 are provided to the light emitting device layer 200. Specifically, each Light Emitting device 210 in the present embodiment may be, but is not limited to, an Organic Light-Emitting diode (OLED), a Quantum Dot Light-Emitting diode (QLED), a Micro Light-Emitting diode (Micro LED), and the like. The embodiments of the present application take the light emitting device 210 as an organic light emitting diode as an example. Each light emitting device 210 may be an organic light emitting diode with different colors, such as a red OLED, a green OLED, a blue OLED, and the like, so as to realize display with different colors, and thus, the touch display device realizes full-color display.
The plurality of first pixel circuits 111 are disposed on the driving circuit layer 100, and the plurality of first pixel circuits 111 are respectively connected to the plurality of light emitting devices 210 in a one-to-one correspondence manner. The first pixel circuit 111 is used for driving the connected light emitting device 210 to emit light, that is, the first pixel circuit 111 outputs a driving signal to the light emitting device 210, the light emitting device 210 emits light according to the received driving signal, and the light emitting brightness may correspond to the amplitude of the driving signal. The first pixel circuit 111 may be, but is not limited to, a 7T1C, 3T1C, 6T1C, 6T2C, and the like type of driving circuit. For example, each of the thin film transistors in the first pixel circuit 111 may be a Low Temperature Poly-silicon (LTPS) transistor. For another example, at least one of the thin film transistors is an Oxide transistor, that is, the first pixel circuit 111 is a Low Temperature Polycrystalline Oxide (LTPO) circuit.
The first touch lines 120 are disposed on the driving circuit layer 100, and the second touch lines are disposed on the touch sensing layer 300. The extending direction of the second touch line is different from that of the first touch line 120, one of the first touch line 120 and the second touch line is used for transmitting a touch transmitting signal, and the other is used for transmitting a touch receiving signal. The touch control line is used for being connected with the touch control electrode so as to transmit the touch control transmitting signal or the touch control receiving signal. The first touch line 120 in the driving circuit layer 100 may be used for transmitting a touch transmitting signal and may also be used for transmitting a touch receiving signal, which may be adjusted according to the specific product, and the embodiment is not limited. Specifically, fig. 2 is a schematic structural diagram of a first touch line and a second touch line according to an embodiment, and referring to fig. 2, the first touch line and the second touch line may be vertically disposed. In the embodiment shown in fig. 2, the longitudinally arranged touch lines are taken as touch emitting lines, and the transversely arranged touch lines are taken as touch receiving lines for illustration. The Touch emitting lines are connected to the plurality of emitting electrodes in the same column, and are used for transmitting a Touch emitting signal Tx from a Touch Display Drive Integrated (TDDI) chip to the connected emitting electrodes. The touch receiving line is connected with the plurality of receiving electrodes in the same row and used for returning a touch receiving signal Rx from the connected receiving electrodes to the touch display driving chip, so that the touch position is detected.
Fig. 3 is a schematic diagram of a touch signal according to an embodiment, and referring to fig. 3, when a touch operation on the touch display screen exists, a touch position generates a corresponding change of an electrical parameter. Therefore, by acquiring the touch reception signal Rx, the touch position can be determined. For example, in FIG. 3, where there are two touch locations, there will be two touchesThe touch receiving signal Rx received by the control line changes. In particular, the electrical parameter that can be varied may be, for example, capacitance. Fig. 4 is a schematic diagram of a touch principle according to an embodiment, and referring to fig. 4, two thickened lines are a transmitting electrode and a receiving electrode of a touch signal respectively. When no touch operation exists, the parasitic capacitance between the transmitting electrode and the receiving electrode is a fixed value C p . When touch operation exists, the fingers are coupled with the transmitting electrode and the receiving electrode, and parasitic capacitance C is generated finger Correspondingly, the touch display driving chip can determine that the total capacitance is that the capacitance between the transmitting electrode and the receiving electrode is changed into C by analyzing the received touch receiving signal Rx p ∥C finger . Also, parasitic capacitance C finger Certain association exists among the finger touch position, the finger touch distance, the finger touch force and the like, so that accurate touch information can be acquired.
In the present embodiment, the first touch line 120 located on the driving circuit layer 100 and the second touch line located on the touch sensing layer 300 are respectively connected to two electrodes of the touch parasitic capacitor to transmit the received and transmitted touch signal. Also, the light emitting device layer 200 generally includes a plurality of inorganic film layers so that the light emitting device layer 200 can be used as a dielectric layer of a touch parasitic capacitance, thereby collectively constituting a structure of the touch parasitic capacitance. By disposing the first touch line 120 and the first pixel circuit 111 in the same layer, that is, by using the first touch line 120 for a part of the space in the driving circuit layer 100 where the first pixel circuit 111 is located, the first touch line 120 can be prevented from occupying a film layer alone. In addition, since the light emitting device layer 200 is used as a dielectric layer of the parasitic capacitor, an independent dielectric layer is not required to be arranged, so that the number of film layers in the touch display screen is effectively reduced, the overall thickness of the touch display screen is effectively reduced, and the volume of the touch display screen is reduced.
In one embodiment, the driving circuit layer includes at least two routing layers, the touch display screen further includes a plurality of first scanning signal lines and a plurality of first data signal lines, and the first scanning signal lines and the first data signal lines are respectively disposed on the two routing layers in a one-to-one correspondence manner. The first scanning signal lines are respectively connected with the first pixel circuits and used for transmitting scanning signals to the connected first pixel circuits so as to control the on and off of transistors in the first pixel circuits. Each first data signal line is respectively connected with a plurality of first pixel circuits, and the first data signal lines are used for transmitting data signals to the connected first pixel circuits so as to control the amplitude of driving signals output by the first pixel circuits and further control the brightness of light-emitting devices connected with the first pixel circuits.
The first touch control line and the target signal line are arranged on the same layer, and the target signal line is one of the first scanning signal line and the first data signal line. It can be understood that, if the first touch line and the target signal line are disposed on the same layer, the number of film layers to be disposed can be further reduced, so as to thin the touch display screen. Moreover, the first touch control line and the target signal line can be prepared in the same process. For example, the first touch line and the first scan signal line may be formed at the same time through the same etching step after the metal layer is deposited, or the first touch line and the first data signal line may be formed at the same time. It can be understood that, by adopting the above method to prepare the first touch line, not only the preparation cost of the touch display screen can be reduced, but also the number of process procedures can be reduced, thereby improving the preparation efficiency of the touch display screen.
Fig. 5 is a schematic arrangement diagram of a pixel circuit according to an embodiment, and referring to fig. 5, in one embodiment, a plurality of columns of the first pixel circuits adjacent to each other in a row direction form a first pixel array 110, and the touch display screen includes a plurality of the first pixel arrays 110. It should be noted that, in order to simplify the drawing, only 4 pixel circuits are shown in fig. 5 for each column, but actually, each column may include hundreds or even thousands of pixel circuits. Moreover, the touch display screen further includes a plurality of second pixel arrays 130, and each of the second pixel arrays 130 includes a plurality of second pixel circuits arranged in a row. Specifically, in the embodiment shown in fig. 5, one first pixel array 110 includes 2 columns of first pixel circuits, and the second pixel array 130 includes 1 column of second pixel circuits. It is understood that, in other embodiments, the number of columns of the first pixel circuits included in the first pixel array 110 may be set according to needs, and the number of columns of the second pixel circuits included in the second pixel array 130 may also be set according to the size, the process level, and the like of the pixel circuits. For example, the first pixel array 110 includes 4 columns of the first pixel circuits, and the second pixel array 130 includes 1 column of the second pixel circuits. In yet another embodiment, the first pixel array 110 includes 4 columns of the first pixel circuits, and the second pixel array 130 includes 2 columns of the second pixel circuits.
Specifically, the plurality of second pixel arrays 130 are alternately arranged with the plurality of first pixel arrays 110 in the row direction, respectively. In this way, the first pixel array 110 and the second pixel array 130 can be arranged more uniformly. Here, the second pixel circuit may be understood as a dummy pixel circuit (dummy pixel), which refers to a pixel circuit that is not connected to an actual light emitting device. It can be understood that the first pixel circuit portion is provided with a greater number of metal traces, and the metal traces have a certain reflective effect. Therefore, if the second pixel circuit is not provided, the light reflection effects at different positions of the touch display screen are not completely the same, and accordingly, the problem of screen mura of the touch display screen can be caused. In this embodiment, the second pixel circuit does not have a driving function and is only used for occupying space to improve the distribution uniformity of the pixel circuit, and by arranging the second pixel circuit, the light reflection effect at each position of the touch display screen can be similar, so that the problem of screen mura of the touch display screen is suppressed.
Fig. 6 is a schematic arrangement diagram of data signal lines corresponding to the embodiment of fig. 5, and referring to fig. 5 and fig. 6 in combination, the touch display screen further includes a plurality of second data signal lines, and the extending directions of the second data signal lines are the same as the extending directions of the first data signal lines. It should be noted that, in fig. 6, in order to distinguish the first data signal line from the second data signal line, the thicknesses of the different signal lines are distinguished, but in the touch display screen, the line width of the first data signal line may be the same as the line width of the second data signal line, so as to improve the routing uniformity of the touch display screen. The first data signal line is connected with a plurality of first pixel circuits in the same column, and the second data signal line is connected with a plurality of second pixel circuits in the same column. For example, the first data signal line D1 of fig. 6 is connected to a plurality of first pixel circuits located at a first column in fig. 5, and the second data signal line T1 of fig. 6 is connected to a plurality of second pixel circuits located at a third column in fig. 5. In this embodiment, not only the reflection effect is more uniform by providing the second data signal line, but also the second data signal line can be used as the first touch line to transmit the touch signal. In the embodiment shown in fig. 6, the first touch line is used for transmitting a touch transmitting signal, and in other embodiments, the first touch line may also be used for transmitting a touch receiving signal, which is not limited in this embodiment. Fig. 7 is a schematic diagram illustrating an arrangement of touch lines corresponding to the embodiment of fig. 6, wherein when the second data signal lines on the driving circuit layer extend in a column direction and are used as first touch lines, the second touch lines on the touch sensing layer can extend in a row direction and are arranged to cross the first touch lines to form a mesh-shaped touch sensing structure. The touch display driving chip can transmit a touch transmitting signal to a first touch line in the driving circuit layer and receive a touch receiving signal transmitted from a second touch line in the touch sensing layer, so as to determine a touch position.
Fig. 8 is a second arrangement schematic diagram of the pixel circuits according to an embodiment, and referring to fig. 8, in one embodiment, a plurality of rows of the first pixel circuits adjacent to each other along a column direction form a first pixel array 110, the touch display panel includes a plurality of the first pixel arrays 110, and the touch display panel further includes a plurality of second pixel arrays 130. The plurality of second pixel arrays 130 are respectively arranged along the column direction alternately with the plurality of first pixel arrays 110, and each of the second pixel arrays 130 respectively includes a plurality of second pixel circuits arranged in rows. It should be noted that, in order to simplify the drawing, only 4 pixel circuits are shown in fig. 8 for each row, but actually, each row may include hundreds or even thousands of pixel circuits. Moreover, the touch display screen further includes a plurality of second pixel arrays 130, and each of the second pixel arrays 130 includes a plurality of second pixel circuits arranged in a row. Specifically, in the embodiment shown in fig. 8, one first pixel array 110 includes 4 rows of first pixel circuits, and the second pixel array 130 includes 1 row of second pixel circuits. It is understood that, in other embodiments, the number of rows of the first pixel circuits included in the first pixel array 110 may be set according to requirements, and the number of rows of the second pixel circuits included in the second pixel array 130 may also be set according to the size, process level, and the like of the pixel circuits. Specifically, the plurality of second pixel arrays 130 are alternately arranged with the plurality of first pixel arrays 110 in the row direction, respectively. In this way, the first pixel array 110 and the second pixel array 130 can be arranged more uniformly. In this embodiment, the second pixel circuit does not have a driving function and is only used for occupying space to improve the distribution uniformity of the pixel circuit, and by arranging the second pixel circuit, the light reflection effect at each position of the touch display screen can be similar, so that the problem of screen mura of the touch display screen is suppressed.
Fig. 9 is a schematic arrangement diagram of scanning signal lines corresponding to the embodiment of fig. 8, and referring to fig. 8 and 9 in combination, the touch display screen further includes a plurality of second scanning signal lines, and the extending directions of the second scanning signal lines are the same as the extending directions of the first scanning signal lines. It should be noted that, in fig. 9, in order to distinguish the first scanning signal line from the second scanning signal line, the thicknesses of the different signal lines are distinguished, but in the touch display screen, the line width of the first scanning signal line may be the same as the line width of the second scanning signal line, so as to improve the routing uniformity of the touch display screen. The first scanning signal line is connected with a plurality of first pixel circuits positioned on the same row, and the second scanning signal line is connected with a plurality of second pixel circuits positioned on the same row. In this embodiment, the second scanning signal line is arranged to make the reflection effect more uniform, and the second scanning signal line can also be used as the first touch line to transmit the touch signal. In the embodiment shown in fig. 9, the first touch line is used for transmitting a touch receiving signal, and in other embodiments, the first touch line may also be used for transmitting a touch transmitting signal, which is not limited in this embodiment. Fig. 10 is a schematic diagram illustrating an arrangement of touch lines corresponding to the embodiment of fig. 9, wherein when the second scan signal lines on the driving circuit layer extend in a row direction and are used as the first touch lines, the second touch lines on the touch sensing layer can extend in a column direction and are arranged to intersect with the first touch lines to form a mesh-shaped touch sensing structure. The touch display driving chip can transmit a touch transmitting signal to the second touch line in the touch sensing layer and receive a touch receiving signal transmitted from the first touch line in the driving circuit layer, so as to determine the touch position.
In one embodiment, the light emitting device layer 200 includes an anode layer, a light emitting material layer, and a cathode layer, which are stacked and sequentially disposed. The anode layer is connected to the first pixel circuit to receive a driving signal from the first pixel circuit. The cathode layer is used for receiving a cathode signal, and the light-emitting material layer is used for emitting light under the control of the driving signal and the cathode signal. The cathode layer is provided with a plurality of openings, the openings are respectively arranged in one-to-one correspondence with the first touch control lines, and at least part of projections of the first touch control lines in the thickness direction of the touch control display screen is located in the corresponding openings. Specifically, fig. 11 is a schematic structural diagram of a cathode layer according to an embodiment, referring to fig. 11, an unfilled portion is an opening, and a filled portion is a remaining cathode layer, where the cathode layer shown in fig. 11 can be matched with the second data signal lines shown in the embodiment of fig. 6 to expose each second data signal line from each opening, respectively. Fig. 12 is a schematic structural diagram of a cathode layer according to an embodiment, and referring to fig. 12, the cathode layer shown in fig. 12 can be matched with the second scan signal lines shown in the embodiment of fig. 9 to expose each second scan signal line from each opening. It can be understood that the cathode layer made of a metal material has a shielding effect, so that the first touch line in the driving circuit layer located below the cathode layer is shielded to a certain extent, thereby affecting the parasitic capacitance between the two touch electrodes and causing the detection accuracy of the touch position to be insufficient. In this embodiment, by providing the opening on the cathode layer, the detection accuracy of the touch position can be effectively improved on the premise of ensuring effective transmission of the cathode signal to each light emitting device.
In one embodiment, the shape of the opening is a strip shape, and the extending direction of the strip-shaped opening is the same as the extending direction of the first touch line. In this embodiment, by setting the bar-shaped opening corresponding to the first touch line, the influence of the opening on the transmission function of the cathode signal can be effectively reduced, thereby improving the display quality of the touch display screen.
In one embodiment, the width of the strip-shaped opening is greater than or equal to the line width of the first touch line. In this embodiment, by providing the opening with an appropriate width, the first touch line can be completely exposed, so that the shielding effect of the cathode layer on the first touch line is minimized.
In one embodiment, the touch display screen includes a plurality of light emitting devices, fig. 13 is a schematic partial structure diagram of an arrangement manner of the light emitting devices according to the embodiment, and fig. 14 is a schematic partial structure diagram of the touch display screen formed by combining each pixel circuit according to the embodiment of fig. 5 and the light emitting device according to the embodiment of fig. 13. Referring to fig. 13, in an embodiment, the light emitting devices in the touch display screen are divided into a plurality of light emitting repeating units, a structure in a dashed line frame in fig. 13 is a smallest light emitting repeating unit, and each light emitting repeating unit includes a plurality of light emitting devices. The light emitting repeating unit includes 1 red light emitting device, 2 green light emitting devices, and 1 blue light emitting device. The two adjacent pixels can share the red light-emitting device or the blue light-emitting device, so that the resolution of the touch display screen is improved, the color edge problem of the touch display screen is suppressed, and the display quality is improved. In one embodiment, with continued reference to fig. 13, one of the green light emitting devices and one of the red light emitting devices in the light emitting repeating unit have centers located at two first vertices of a virtual quadrilateral, which are located on a diagonal of the virtual quadrilateral. The other one of the green light emitting devices and the one of the blue light emitting devices in the light emitting repeating unit have centers located at two second vertices of a virtual quadrangle, respectively, the two second vertices being located on the other diagonal of the virtual quadrangle.
Fig. 15 is a schematic cross-sectional view of a driving circuit layer and an anode layer of an embodiment, and referring to fig. 15, in one embodiment, the driving circuit layer includes a first gate insulating layer 614, an interlayer insulating layer 615, and a plurality of planarization layers 616, which are stacked and sequentially disposed. Specifically, a first pixel circuit is shown on the left side and a second pixel circuit is shown on the right side in fig. 15. The first pixel circuit and the second pixel circuit respectively include a plurality of transistors, and the transistors in the first pixel circuit are exemplified by a structure including a first gate 601, a first source 602, a first drain 603, a source contact structure 604, and a drain contact structure 605. The anode layer of the light emitting device is electrically connected to the first source 602 of the first pixel circuit via the interlayer trace and the source contact structure 604, and the first source of the second pixel circuit is not connected to the anode layer of the light emitting device.
In one embodiment, the second pixel circuit and the first pixel circuit have the same structure and size. Specifically, through setting up the second pixel circuit (dummy pixel) the same with first pixel circuit, can guarantee that the structure, size and the interval of each pixel circuit inside the touch-control display screen are unanimous to avoid the problem of the screen Mura of breathing that the inconsistent arouses of circuit routing density to the at utmost. Moreover, the consistent structure of the pixel circuit is beneficial to the stability of the process, the electrical property consistency of the thin film transistor is ensured, and the uniformity of display is ensured. In addition, in terms of circuit design, the adoption of the setting mode of the embodiment can reduce the design difficulty of the touch display screen and simultaneously reduce the difference influence of various optical effects on the size structure in the exposure preparation process, thereby improving the preparation yield of the pixel circuit array.
Fig. 16 is a third schematic structural diagram of a pixel circuit according to an embodiment, and referring to fig. 16, in one embodiment, the touch display screen is provided with a first array region 11 and a second array region 12 which are sequentially arranged along the first direction. The first pixel array 110 and the second pixel array 130 which are alternately arranged are disposed in the first array region 11, and the direction of the alternate arrangement of the first pixel array 110 and the second pixel array 130 is the first direction. The second array region 12 is provided with a plurality of the first pixel arrays 110 arranged along the first direction, and the second pixel array 130 is not arranged between two adjacent first pixel arrays 110.
Specifically, the first array area is close to the center of the touch display screen, and the second array area is close to the edge of the touch display screen. It can be understood that the second pixel circuit is not arranged at the edge close to the touch display screen, and a certain space can be reserved at the edge of the touch display screen to accommodate the GOA driving circuit, so that the touch display screen with a narrow frame is provided. Moreover, the edge width of the touch display screen is very small, only about 0.1 mm, and the edge width is very small relative to the size of a human finger. Therefore, even if the touch line is not provided, the influence on the touch accuracy can be considered negligible.
The embodiment of the application further provides a touch display device which comprises the touch display screen. Based on the touch display screen, the embodiment provides a thinner touch display device.
In one embodiment, the touch display screen is a flexible display screen. Specifically, the stress applied to the touch display screen in the bending process can be reduced by reducing the thickness of the touch display screen, so that the flexibility of the display screen is improved, and the application of the display screen in the fields of folding, sliding, rolling and the like in new forms is expanded. I.e. to a flexible display device. The substrate of the flexible display panel may be made of a material having high hardness, and in order to allow the flexible display panel to deform and display normally, the substrate should be made of a material having high flexibility and high light transmittance, such as polyimide, polyethylene terephthalate, and the like.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express a few embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the concept of the embodiments of the present application, several variations and modifications can be made, which all fall within the scope of the embodiments of the present application. Therefore, the protection scope of the embodiments of the present application shall be subject to the appended claims.
Claims (11)
1. The utility model provides a touch-control display screen which characterized in that, includes range upon range of drive circuit layer, luminescent device layer and the touch-control response layer that sets gradually, touch-control display screen includes:
a plurality of light emitting devices disposed on the light emitting device layer;
the plurality of first pixel circuits are arranged on the driving circuit layer, are respectively connected with the plurality of light-emitting devices in a one-to-one correspondence manner, and are used for driving the connected light-emitting devices to emit light;
the first touch control lines are arranged on the driving circuit layer;
the touch control sensing layer is arranged on the substrate, the second touch control lines are arranged on the touch control sensing layer, the extending directions of the second touch control lines are different from those of the first touch control lines, one of the first touch control lines and the second touch control lines is used for transmitting touch control transmitting signals, and the other one of the first touch control lines and the second touch control lines is used for transmitting touch control receiving signals.
2. The touch display panel of claim 1, wherein the light emitting device layer includes an anode layer, a light emitting material layer, and a cathode layer, which are stacked in sequence, the anode layer is connected to the first pixel circuit to receive a driving signal from the first pixel circuit, the cathode layer is used for receiving a cathode signal, and the light emitting material layer is used for emitting light under the control of the driving signal and the cathode signal;
the cathode layer is provided with a plurality of openings, the openings are respectively arranged in one-to-one correspondence with the first touch control lines, and at least part of projections of the first touch control lines in the thickness direction of the touch control display screen is located in the corresponding openings.
3. The touch display screen of claim 2, wherein the opening is shaped as a bar, and an extending direction of the bar-shaped opening is the same as an extending direction of the first touch line.
4. The touch display screen of claim 3, wherein the width of the bar-shaped opening is greater than or equal to the line width of the first touch line.
5. The touch display screen of claim 1, wherein the driving circuit layer comprises at least two routing layers, and the touch display screen further comprises:
a plurality of first scanning signal lines, each of which is connected to the plurality of first pixel circuits, respectively, the first scanning signal lines being used to transmit scanning signals to the connected first pixel circuits;
a plurality of first data signal lines, each of which is connected to the plurality of first pixel circuits, respectively, the first data signal lines being used to transmit data signals to the connected first pixel circuits;
the first scanning signal lines and the first data signal lines are respectively arranged on the two wiring layers in a one-to-one correspondence manner, the first touch control lines and the target signal lines are arranged on the same layer, and the target signal lines are one of the first scanning signal lines and the first data signal lines.
6. The touch display screen of claim 5, wherein a plurality of columns of the first pixel circuits adjacent to each other in the row direction form a first pixel array, the touch display screen includes a plurality of the first pixel arrays, and the touch display screen further includes:
a plurality of second pixel arrays, the plurality of second pixel arrays being alternately arranged with the plurality of first pixel arrays in a row direction, respectively, each of the plurality of second pixel arrays including a plurality of second pixel circuits arranged in columns, respectively;
and a plurality of second data signal lines, each of which is connected to the plurality of second pixel circuits, respectively, and is used as the first touch line.
7. The touch-sensitive display screen of claim 5, wherein a plurality of rows of the first pixel circuits adjacent to each other along a column direction form a first pixel array, the touch-sensitive display screen includes a plurality of the first pixel arrays, and the touch-sensitive display screen further includes:
a plurality of second pixel arrays alternately arranged with the plurality of first pixel arrays in a column direction, respectively, each of the second pixel arrays including a plurality of second pixel circuits arranged in rows, respectively;
and a plurality of second scanning signal lines, each of which is connected to the plurality of second pixel circuits, respectively, the second scanning signal lines being used as the first touch lines.
8. The touch display screen of claim 6 or 7, wherein the second pixel circuit and the first pixel circuit have the same structure and size.
9. The touch display screen of claim 6 or 7, wherein the touch display screen is provided with a first array area and a second array area sequentially arranged along the first direction;
the first pixel array and the second pixel array which are alternately arranged are arranged in the first array area, and the direction of the alternating arrangement of the first pixel array and the second pixel array is the first direction;
the second array region is provided with a plurality of first pixel arrays arranged along the first direction, and the second pixel array is not arranged between two adjacent first pixel arrays.
10. A touch display device comprising the touch display screen of any one of claims 1 to 9.
11. The touch display device of claim 10, wherein the touch display screen is a flexible display screen.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210632261.XA CN114942709A (en) | 2022-06-07 | 2022-06-07 | Touch display screen and touch display equipment |
| PCT/CN2022/143695 WO2023236529A1 (en) | 2022-06-07 | 2022-12-30 | Touch display screen and touch display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210632261.XA CN114942709A (en) | 2022-06-07 | 2022-06-07 | Touch display screen and touch display equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114942709A true CN114942709A (en) | 2022-08-26 |
Family
ID=82908370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210632261.XA Pending CN114942709A (en) | 2022-06-07 | 2022-06-07 | Touch display screen and touch display equipment |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN114942709A (en) |
| WO (1) | WO2023236529A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023236529A1 (en) * | 2022-06-07 | 2023-12-14 | Oppo广东移动通信有限公司 | Touch display screen and touch display device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104698708A (en) * | 2015-04-01 | 2015-06-10 | 上海天马微电子有限公司 | Array substrate, manufacturing method thereof and display device |
| WO2015096213A1 (en) * | 2013-12-26 | 2015-07-02 | 深圳市华星光电技术有限公司 | Touch liquid crystal display (lcd) array substrate and corresponding touch lcd |
| CN105468202A (en) * | 2016-01-29 | 2016-04-06 | 上海中航光电子有限公司 | Array substrate, touch display panel and touch display device |
| CN106842663A (en) * | 2017-02-17 | 2017-06-13 | 上海天马微电子有限公司 | Array substrate, manufacturing method, touch display panel and touch display device |
| US20180341354A1 (en) * | 2017-05-24 | 2018-11-29 | Shanghai Tianma Micro-electronics Co., Ltd. | Touch display panel and display device |
| CN113539130A (en) * | 2021-07-19 | 2021-10-22 | Oppo广东移动通信有限公司 | Display module assembly and display device |
| CN113823214A (en) * | 2021-10-27 | 2021-12-21 | Oppo广东移动通信有限公司 | Display module assembly and display device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015175921A (en) * | 2014-03-13 | 2015-10-05 | 株式会社ジャパンディスプレイ | display device |
| CN109782959B (en) * | 2019-02-02 | 2022-11-25 | 京东方科技集团股份有限公司 | Touch display screen, driving method and display device |
| CN111930262B (en) * | 2020-09-11 | 2024-04-26 | 合肥维信诺科技有限公司 | Touch display panel |
| CN113434054B (en) * | 2021-06-25 | 2023-11-28 | 厦门天马微电子有限公司 | Display panel and display device |
| CN113506539B (en) * | 2021-07-19 | 2022-09-09 | Oppo广东移动通信有限公司 | Display module and display device |
| CN114942709A (en) * | 2022-06-07 | 2022-08-26 | Oppo广东移动通信有限公司 | Touch display screen and touch display equipment |
-
2022
- 2022-06-07 CN CN202210632261.XA patent/CN114942709A/en active Pending
- 2022-12-30 WO PCT/CN2022/143695 patent/WO2023236529A1/en unknown
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015096213A1 (en) * | 2013-12-26 | 2015-07-02 | 深圳市华星光电技术有限公司 | Touch liquid crystal display (lcd) array substrate and corresponding touch lcd |
| CN104698708A (en) * | 2015-04-01 | 2015-06-10 | 上海天马微电子有限公司 | Array substrate, manufacturing method thereof and display device |
| CN105468202A (en) * | 2016-01-29 | 2016-04-06 | 上海中航光电子有限公司 | Array substrate, touch display panel and touch display device |
| CN106842663A (en) * | 2017-02-17 | 2017-06-13 | 上海天马微电子有限公司 | Array substrate, manufacturing method, touch display panel and touch display device |
| US20180341354A1 (en) * | 2017-05-24 | 2018-11-29 | Shanghai Tianma Micro-electronics Co., Ltd. | Touch display panel and display device |
| CN113539130A (en) * | 2021-07-19 | 2021-10-22 | Oppo广东移动通信有限公司 | Display module assembly and display device |
| CN113823214A (en) * | 2021-10-27 | 2021-12-21 | Oppo广东移动通信有限公司 | Display module assembly and display device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023236529A1 (en) * | 2022-06-07 | 2023-12-14 | Oppo广东移动通信有限公司 | Touch display screen and touch display device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023236529A1 (en) | 2023-12-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11086439B2 (en) | Display panel with metal mesh units and display apparatus | |
| CN111381712B (en) | Display device with integrated antenna | |
| CN104701352B (en) | A kind of array base palte, display panel and display device | |
| JP2020204762A (en) | Display device | |
| CN107749419B (en) | Electroluminescent display panel and display device | |
| GB2575174A (en) | Power and data routing structures for organic light-emitting diode displays | |
| KR20210058528A (en) | Display device | |
| KR20200108148A (en) | Display device | |
| CN114690969A (en) | Touch display device | |
| KR20230124841A (en) | Display board and display device | |
| US12013718B2 (en) | Touch sensor layer, touch screen, and display apparatus | |
| CN114942709A (en) | Touch display screen and touch display equipment | |
| US11231795B2 (en) | Touch control array substrate having a plurality of auxiliary conductive lines, and display apparatus thereof | |
| EP4206877B1 (en) | Transparent touch display device | |
| KR20180131762A (en) | Touch display device | |
| US12086352B2 (en) | Transparent touch display device | |
| KR102694937B1 (en) | Touch screen panel and touch screen integrated display Device | |
| CN116414248A (en) | Transparent touch display device | |
| US20240164173A1 (en) | Display Panel, Manufacturing Method Thereof, and Display Device | |
| KR20240014746A (en) | Touch display device and touch driving method | |
| CN114356138A (en) | Touch display panel and display device | |
| KR20230029061A (en) | Touch display device and display panel | |
| US12111992B2 (en) | Touch panel with chip region having display pins and touch pins, preparation method therefor, and display apparatus | |
| US20240256083A1 (en) | Display panel and control method thereof | |
| TWI765405B (en) | Electronic device with touch sensing function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |