CN117891360A - Touch display panel and preparation method thereof, touch display device and preparation method thereof - Google Patents
Touch display panel and preparation method thereof, touch display device and preparation method thereof Download PDFInfo
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Abstract
The application belongs to the technical field of touch display devices, and provides a touch display panel, a preparation method thereof, the touch display device and a preparation method thereof, wherein the touch display panel comprises a touch layer, a color film substrate and an array substrate which are sequentially stacked, one side of the array substrate, which is close to the color film substrate, comprises a switch tube layer, the touch layer and the switch tube layer are correspondingly connected with a touch driving circuit and a display driving circuit which are arranged on the same printed circuit board through the same flexible circuit board, the flexible circuit board is arranged at one end of the switch tube layer, and the touch layer is connected with the flexible circuit board through a first metal wiring which is arranged on the side edge of the color film substrate. The application can effectively simplify the structure of the touch display panel and the device, thereby simplifying the testing process and improving the production efficiency and the yield.
Description
Technical Field
The application belongs to the technical field of Touch display devices (Touch Monitor), and particularly relates to a Touch display panel and a preparation method thereof, a Touch display device and a preparation method thereof.
Background
The touch display device has both touch and display functions, and the On-cell technology is a technology of embedding a touch screen between a color FILTER PANEL, CF Panel and a polarizer (Polarizer) of a display screen. On-cell technology is becoming more and more favored because of its high penetration, low impedance, high sensitivity, etc. At present, the structure, the manufacturing process and the testing process of the touch display device applying the On-cell technology are complex, and the production efficiency and the yield are low.
Disclosure of Invention
In view of the above, the embodiments of the present application provide a touch display panel, a manufacturing method thereof, a touch display device and a manufacturing method thereof, so as to solve the problems of complex structure, manufacturing process and testing process, low production efficiency and low yield of the touch display device currently applying On-cell technology.
The first aspect of the embodiment of the application provides a touch display panel, which comprises a touch layer, a color film substrate and an array substrate which are sequentially stacked, wherein one side of the array substrate, which is close to the color film substrate, comprises a switch tube layer, the touch layer and the switch tube layer are in one-to-one correspondence connection with a touch driving circuit and a display driving circuit which are arranged on the same printed circuit board through the same flexible circuit board, the flexible circuit board is arranged at one end of the switch tube layer, and the touch layer is connected with the flexible circuit board through a first metal wire arranged at the side edge of the color film substrate.
In an embodiment, an insulating protection layer is disposed on a side of the first metal wire away from the color film substrate.
In one embodiment, a second metal wire and a third metal wire are arranged in a wire area of the array substrate, which is close to one end of the flexible circuit board;
the touch layer is connected with the flexible circuit board through the first metal wire and the second metal wire in sequence;
The switch tube layer is connected with the flexible circuit board through the third metal wire.
In an embodiment, the touch display panel further includes an upper polarizing structure, and the touch layer is disposed between the upper polarizing structure and the color film substrate.
In one embodiment, the touch display panel further includes an upper polarizing structure including a polarizing layer and a pressure-sensitive adhesive layer, and the touch layer is disposed between the polarizing layer and the pressure-sensitive adhesive layer.
In one embodiment, the polarizing layer includes a first cellulose triacetate layer, a polyvinyl alcohol layer, a second cellulose triacetate layer, and a hardness layer sequentially stacked on a side of the touch layer away from the pressure sensitive adhesive layer.
A second aspect of the embodiment of the present application provides a touch display device, including the touch display panel, the flexible circuit board, the touch driving circuit and the display driving circuit provided in the first aspect.
A third aspect of an embodiment of the present application provides a method for manufacturing a touch display panel according to the first aspect, including:
Preparing a first metal wire on the side edge of the color film substrate in the wire process of the touch control layer;
In the wiring process of the array substrate, preparing a second metal wiring and a third metal wiring in a wiring area of the array substrate;
the first metal wire is used for connecting the touch layer to the second metal wire;
The second metal wire is used for connecting the first metal wire to the flexible circuit board;
The third metal wire is used for connecting the switch tube layer to the flexible circuit board.
In one embodiment, the first metal trace is prepared on the side of the color film substrate based on a glass substrate side wiring process.
A fourth aspect of an embodiment of the present application provides a method for manufacturing a touch display device according to the second aspect, including:
In the bonding process of the touch control driving circuit and the display driving circuit, the touch control layer and the switching tube layer are bonded to the touch control driving circuit and the display driving circuit in a one-to-one correspondence mode through the flexible circuit board.
In the touch display panel provided by the first aspect and the touch display device provided by the second aspect of the embodiments of the present application, the touch layer and the switch tube layer are connected in one-to-one correspondence with the touch driving circuit and the display driving circuit located On the same printed circuit board through the same flexible circuit board, compared with other touch display devices applying On-cell technology, the touch display device provided by the first aspect of the embodiments of the present application has the advantages that the structure can be effectively simplified by one-to-one connection between the touch layer and the switch tube layer and the touch driving circuit and the display driving circuit located On the same printed circuit board through different flexible circuit boards, so that the testing process is simplified, and the production efficiency and the yield are improved.
In the method for manufacturing the touch display device according to the fourth aspect of the embodiments of the present application, in the bonding process of the touch driving circuit and the display driving circuit, the flexible circuit board is used to bond the touch layer and the switching tube layer to the touch driving circuit and the display driving circuit respectively in a one-to-one correspondence manner, compared with other bonding processes of the back end module (i.e., the touch driving circuit and the display driving circuit) of the touch display device applying the On-cell technology, the bonding method of the switching tube layer to the display driving circuit through the flexible circuit board first, and then the bonding method of the touch layer to the touch driving circuit located On the same printed circuit board as the display driving circuit through the other flexible circuit board is used to bond the switching tube layer to the touch driving circuit of the same printed circuit board through only one bonding process, so that the bonding of the back end module can be effectively simplified, and the production efficiency and the yield can be improved.
It will be appreciated that the advantages of the third aspect may be found in the relevant description of the first aspect, and are not described in detail herein.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a first touch display device according to an embodiment of the application;
Fig. 2 is a schematic structural diagram of a second touch display device according to an embodiment of the application;
fig. 3 is a schematic structural diagram of a third touch display device according to a second embodiment of the present application;
fig. 4 is a schematic structural diagram of a fourth touch display device according to a third embodiment of the present application;
fig. 5 is a schematic diagram of a trace structure according to a fourth embodiment of the present application;
fig. 6 is a flowchart of a method for manufacturing a touch display panel in a second touch display device according to a fifth embodiment of the application;
fig. 7 is a flowchart of a method for manufacturing a touch display panel in a third touch display device according to a sixth embodiment of the application;
Fig. 8 is a flowchart of a method for manufacturing a touch display panel in a fourth touch display device according to a seventh embodiment of the application;
Reference numerals:
a touch display panel-10;
A touch layer-11;
the color film comprises a color film substrate-12, a first substrate-121 and a color film layer-122;
the array substrate-13, the switch tube layer-131, the second substrate-132 and the wiring area-133;
a first metal trace-14;
An insulating protective layer-15;
The adhesive comprises an upper polarizing structure-16, a polarizing layer-161, a pressure-sensitive adhesive layer-162, a first cellulose triacetate layer-1611, a polyvinyl alcohol layer-1612, a second cellulose triacetate layer-1613 and a hardness layer-1614;
a second metal trace-17;
a third metal trace-18;
a flexible circuit board (20), a first flexible circuit board (21), a second flexible circuit board (22);
A Printed Circuit Board (PCB) 30, a touch control driving circuit (touch control driving circuit) 31 and a display driving circuit (display driving circuit) 32;
A liquid crystal layer-40.
Detailed Description
In order that those skilled in the art will better understand the present application, a technical solution of an embodiment of the present application will be clearly described below with reference to the accompanying drawings in the embodiment of the present application, and it is apparent that the described embodiment is a part of the embodiment of the present application, but not all the embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.
The term "comprising" in the description of the application and the claims and in the above figures and any variants thereof is intended to cover a non-exclusive inclusion. For example, a process, method, or system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed but may optionally include additional steps or elements not listed or inherent to such process, method, article, or apparatus. Furthermore, the terms "first," "second," and "third," etc. are used for distinguishing between different objects and not for describing a particular sequential order. The term "plurality" means "at least two".
Example 1
As shown in fig. 1, an embodiment of the present application provides a first touch display device, which includes a touch display panel 10, a first flexible circuit board (Flexible Printed Circuit, FPC) 21, a second flexible circuit board 22, and a printed circuit board (Printed Circuit Board, PCB) 30, wherein the printed circuit board 30 is provided with a touch driving circuit 31 and a display driving circuit 32;
The touch display panel 10 comprises a touch layer 11, a color film substrate 12 and an array substrate 13 which are sequentially stacked, and one side of the array substrate 13, which is close to the color film substrate 12, comprises a switching tube layer 131;
The first flexible circuit board 21 is arranged at one end of the touch control layer 11, and the second flexible circuit 22 is arranged at one end of the switch tube layer 131;
The touch control layer 11 is connected with a touch control driving circuit 31 arranged on the printed circuit board 30 through a first flexible circuit board 21;
The switching tube layer 131 is connected to the display driving circuit 32 provided to the printed circuit board 30 through the second flexible circuit board 22.
In application, the touch display device shown in fig. 1 is implemented based On-cell technology, after the color film substrate 12 and the array substrate 13 are manufactured, the touch layer 11 is deposited On the substrate of the color film substrate 12 by vacuum sputtering, then the switching tube layer 131 is bonded (bonded) to the second flexible circuit board 22, the second flexible circuit board 22 is bonded to the printed circuit board 30 and the display driving circuit connection 32, then the touch layer 11 is bonded to the first flexible circuit board 21, and the first flexible circuit board 21 is bonded to the printed circuit board 30 and the touch driving circuit 31. Because the array substrate is already relatively fixed between the printed circuit board 30 and the array substrate 13 when bonding is completed for the first time, the allowable offset error between the printed circuit board 30 and the array substrate 13 is very small when bonding is completed for the second time, and meanwhile, when shooting is performed from one side of the touch layer 11 away from the array substrate 13 towards the printed circuit board 30 and the touch layer 11 by using the monitoring and monitoring equipment based on the automatic optical detection (Automated Optical Inspection, AOI) technology, so as to detect particle indentation and offset between the printed circuit board 30 and the touch layer 11, because the Black Matrix (BM) of the array substrate 13 is opaque and is just below the orthographic projection of the bonding position between the printed circuit board 30 and the touch layer 11, the image area of the bonding position in the shot image is displayed as the color of the black matrix, so that the particle indentation and offset cannot be accurately identified, in the process of the touch display device, the abnormality of the touch layer 11 cannot be detected in time, and the touch layer 11 is easily bound, and the electrical performance of the touch layer 11 is limited due to the fact that the two-pass efficiency and the customization of the touch layer 11 is required.
In application, the black matrix may be implemented by at least one black photoresist material of metallic chromium (Cr), nickel (Ni), tungsten (W), etc.
As shown in fig. 2, the embodiment of the application provides a second touch display device, which includes a touch display panel 10, a flexible circuit board 20 and a printed circuit board 30, wherein the printed circuit board 30 is provided with a touch driving circuit 31 and a display driving circuit 32;
The touch display panel 10 comprises a touch layer 11, a color film substrate 12 and an array substrate 13 which are sequentially stacked, and one side of the array substrate 13, which is close to the color film substrate 12, comprises a switching tube layer 131;
the flexible circuit board 20 is arranged at one end of the touch control layer 11;
The touch control layer 11 is connected with a touch control driving circuit 31 arranged on the printed circuit board 30 through the flexible circuit board 20, and the switch tube layer 131 is connected with a display driving circuit 32 arranged on the printed circuit board 30 through the flexible circuit board 20;
the touch layer 11 is connected with the flexible circuit board 20 through a first metal wire 14 arranged on the side edge of the color film substrate 12.
In application, the touch display device shown in fig. 2 is realized based On the improved On-cell technology, after the color film substrate 12 and the array substrate 13 are manufactured, the touch layer 11 is first disposed On the first substrate 121 of the color film substrate 12, and then the switching tube layer 131 and the touch layer 11 are bonded to the same flexible circuit board 20, so that the switching tube layer 131 is connected with the display driving circuit 32, the touch layer 11 is connected with the touch driving circuit 31, and only one bonding process and electrical test of the touch layer 11 need to be performed, so that the structure can be effectively simplified, the testing process is simplified, and the process yield, the productivity efficiency and the like are all obviously improved.
In application, the first metal trace 14 is prepared on the side of the color film substrate 12 based on a glass substrate side wiring process, and extends from one end of the touch layer 11 to one end of the switching tube layer 131 through the side of the color film substrate 12 so as to be connected with one end of the flexible circuit board 20 close to the switching tube layer 131. The first metal trace 14 may be implemented by any electrically good conductor, such as a metallic material of gold, silver, copper, magnesium, aluminum, or the like.
As shown in fig. 1 and 2, in one embodiment, the color film substrate 12 includes a first substrate 121 and a color film layer 122, and the touch layer 11 is disposed on a side of the first substrate 121 away from the color film layer 122;
The array substrate 13 further includes a second substrate 132, and the flexible circuit board 20 or the second flexible circuit board 22 is disposed on a side of the switching tube layer 131 away from the second substrate 132;
The touch display device further includes a liquid crystal layer 40 sandwiched between the color film substrate 12 and the array substrate 13.
In application, the first substrate 121 and the second substrate 132 may be glass substrates or plastic substrates, and may be implemented by selecting any type of substrate material with light transmission function and non-conductive property according to actual needs. The color film layer 122 may be implemented by a color-resistant material such as potassium fluorosilicate (KSF) phosphor (i.e., red phosphor), aluminate red phosphor, aluminate green phosphor, europium-doped blue phosphor, and the like.
As shown in fig. 2, in one embodiment, an insulating protection layer 15 is disposed on a side of the first metal trace 14 away from the color film substrate 12.
In application, by providing the insulating protection layer 15 outside the first metal trace 14, the first metal trace 14 can be protected, while insulation between the first metal trace 14 and other circuits provided on the printed circuit board 30 is achieved.
In application, the touch display device may necessarily further include related structures such as a pad, a common electrode layer, a pixel electrode layer, an alignment film, etc., and may be set according to actual needs, where the common electrode layer and the pixel electrode layer may be implemented by transparent conductive materials such as indium tin oxide (e.g., tin doped Indium Trioxide (ITO)), aluminum doped zinc oxide (AZO), etc. The alignment film may be realized by an alignment film material such as Polyimide (PI).
Example two
As shown in fig. 3, the third touch display device according to the embodiment of the present application is based on the second touch display device shown in fig. 2, the touch display panel 10 further includes an upper polarizing structure 16, and the touch layer 11 is disposed between the upper polarizing structure 16 and the first substrate 121 of the color film substrate 12.
In application, the touch layer 11 can be deposited on the first substrate 121 of the color film substrate 12 by vacuum sputtering, the process is mature and simple, and the process yield and productivity are high.
Example III
As shown in fig. 4, the embodiment of the present application provides a fourth touch display device, and the touch display panel 10 further includes an upper polarizing structure 16 based on the second touch display device shown in fig. 2, wherein the upper polarizing structure 16 includes a polarizing layer 161 and a Pressure sensitive adhesive (Pressure SENSITIVE ADHESIVE, PSA) layer 162, the touch layer 11 is disposed between the polarizing layer 161 and the Pressure sensitive adhesive layer 162, and the Pressure sensitive adhesive layer 162 is disposed on the first substrate 121.
In application, the manner of directly depositing the touch layer 11 on the first substrate 121 of the color film substrate 12 by vacuum sputtering is limited by the temperature resistance of the material inside the color film substrate 12, and the process conditions for depositing the touch layer 11 are greatly limited, for example, the film forming temperature of the touch layer 11 cannot be too high, the vacuum pressure cannot be too high, etc., while the manner of directly depositing the touch layer 11 on the pressure sensitive adhesive layer of the upper polarizing structure 16 by vacuum sputtering is not limited by the temperature resistance of the material inside the color film substrate 12, so that the process yield and the productivity efficiency can be improved, and meanwhile, the polarizing layer 161 can realize insulation and protection of the touch layer 11.
In application, the pressure sensitive adhesive layer 162 determines the adhesion property and the patch processability of the polarizing layer 161, and is used to attach the touch layer 11 to the polarizing layer 161.
As shown in fig. 4, in one embodiment, the polarizing layer 161 includes a first cellulose triacetate layer (tri-cellulose Acetate, TAC) 1611, a polyvinyl alcohol layer (Polyvinyl Alcohol, PVA) 1612, a second cellulose triacetate layer 1613, and a hardness layer (HC) 1614, which are sequentially stacked on a side of the touch layer 11 remote from the pressure-sensitive adhesive layer 162.
In application, the polyvinyl alcohol layer 1612 is a main component of the polarizing layer 161, also referred to as a polarizing raw film, and determines the polarizing performance and transmittance of the polarizing layer 161, and also is a main component affecting the color tone and optical durability of the polarizing layer 161. Since the polyvinyl alcohol layer 1612 is liable to absorb water and discolor to lose polarization properties, it is necessary to provide a layer of cellulose triacetate layer (i.e., the first cellulose triacetate layer 1611 and the second cellulose triacetate layer 1613) having good optical uniformity and transparency on both sides thereof to isolate moisture and air so as to protect the polyvinyl alcohol layer 1612. The hardness layer 1614 serves to enhance the hardness of the polarizing layer 161.
In application, the structure of the polarizing layer 161 may be other structures according to actual needs, for example, only including the first cellulose triacetate layer 1611, the polyvinyl alcohol layer 1611, and the second cellulose triacetate layer 1613 sequentially stacked on the side of the touch layer 11 far from the pressure-sensitive adhesive layer 162, so long as the polarizing effect on the light emitted through the color film substrate can be achieved.
In application, the upper polarizing structures in the third touch display device and the fourth touch display device provided in the embodiments of the present application may be the same, and the difference is only that the setting positions of the touch layers 11 are different. As shown in fig. 3, the same upper polarizing structure as in fig. 4 is exemplarily shown.
In application, the touch display panel further includes a lower polarizing structure disposed on one side of the array substrate 13 away from the color film substrate 12, where the lower polarizing structure and the upper polarizing structure 16 may be the same or different, and may be set according to actual needs.
Example IV
As shown in fig. 5, in one embodiment, on the basis of the third touch display device shown in fig. 3 or the fourth touch display device shown in fig. 4, a trace area 133 of the array substrate 13 near one end of the flexible circuit board 20 is provided with a second metal trace 17 and a third metal trace 18;
the touch layer 11 is connected with the flexible circuit board 20 through the first metal wire 14 and the second metal wire 17 in sequence;
the switching tube layer 131 is connected to the flexible circuit board 20 through the third metal trace 18.
In application, in the wiring process of the array substrate 13, the second metal wiring 17 required for designing the touch layer 11 is reserved in the wiring area 133 of the array substrate 13, and in the wiring process of the touch layer 11, the glass side wiring printing technology is utilized, and the first metal wiring 14 is led out to the wiring area 133 of the array substrate 13, so that the connection between the first metal wiring 14 and the second metal wiring 17 is realized, no additional wiring process is required, and the realization process is simple.
Example five
As shown in fig. 2 or fig. 6, the embodiment of the application provides a method for manufacturing a touch display panel 10 in a second touch display device, which includes the following steps:
s101, in the process of the array substrate 13, preparing a switching tube layer 131 on the surface of a second substrate 132 to form a display area of the array substrate 13, and reserving a wiring area;
s102, preparing a color film layer 122 on the surface of a first substrate 121 to form a color film substrate 12 in the process of the color film substrate 12;
s103, in the box forming process, the color film substrate 12 and the array substrate 13 are combined to form a liquid crystal box, and liquid crystal is filled in the liquid crystal box to form a liquid crystal layer 40;
s104, arranging the touch control layer 11 on one side of the first substrate 121 far away from the color film layer 122;
S105, in the wiring process of the touch layer 11, a first metal wire 14 is prepared on the side of the color film substrate 12 based on the glass substrate side wiring process, and the first metal wire 14 is led out to the wire area of the array substrate 13.
In application, in the wiring process of the touch layer 11, the first metal wiring 14 is prepared on the side of the color film substrate 12 based on the glass substrate side wiring process, and the first metal wiring 14 is led out to the wiring area of the array substrate 13, and the first metal wiring 14 is reserved as a connection structure between the touch layer 11 and the touch driving circuit 31, so that in the subsequent bonding process, the switch tube layer 131 and the touch layer 11 can be bonded to the same flexible circuit board 20, only one-time bonding process and electrical test of the touch layer 11 are required, the structure of the touch display panel can be effectively simplified, the testing process is simplified, and the manufacturing yield, the productivity efficiency and the like are obviously improved.
In one embodiment, step S105 further includes:
S106, preparing an insulating protection layer 15 on one side of the first metal wire 14 far away from the color film substrate 12.
In application, the first metal trace 14 may be protected by providing an insulating protection layer 15 outside the first metal trace 14.
Example six
As shown in fig. 3 or fig. 7, the embodiment of the application provides a method for manufacturing a touch display panel 10 in a third touch display device, which includes the following steps:
S201, in the process of the array substrate 13, preparing a switching tube layer 131 on the surface of the second substrate 132 to form a display area of the array substrate 13, and reserving a wiring area;
s202, preparing a color film layer 122 on the surface of a first substrate 121 to form a color film substrate 12 in the process of the color film substrate 12;
S203, in the process of forming the box, the color film substrate 12 and the array substrate 13 are combined to form a liquid crystal box, and liquid crystal is filled in the liquid crystal box to form a liquid crystal layer 40;
S204, preparing an upper polarized light structure 16 on one side of the first substrate 121 far away from the color film layer 122;
s205, arranging the touch control layer 11 on one side of the upper polarizing structure 16 far away from the color film substrate 12 in a vacuum sputtering mode;
S206, in the wiring process of the touch layer 11, the first metal wires 14 are prepared on the side of the color film substrate 12 based on the glass substrate side wiring process, and the first metal wires 14 are led out to the wiring area of the array substrate 13.
In application, in the wiring process of the touch layer 11, the first metal wiring 14 is prepared on the side of the color film substrate 12 based on the glass substrate side wiring process, and the first metal wiring 14 is led out to the wiring area of the array substrate 13, and the first metal wiring 14 is reserved as a connection structure between the touch layer 11 and the touch driving circuit 31, so that in the subsequent bonding process, the switch tube layer 131 and the touch layer 11 can be bonded to the same flexible circuit board 20, only one-time bonding process and electrical test of the touch layer 11 are required, the structure of the touch display panel can be effectively simplified, the testing process is simplified, and the manufacturing yield, productivity efficiency and the like are obviously improved; meanwhile, the touch control layer 11 is deposited on the first substrate 121 of the color film substrate 12 by a vacuum sputtering mode, the process is mature and simple, and the process yield and the productivity efficiency are high.
In one embodiment, step S206 further includes:
S207, preparing an insulating protection layer 15 on one side of the first metal wire 14 far away from the color film substrate 12.
In application, the first metal trace 14 may be protected by providing an insulating protection layer 15 outside the first metal trace 14.
Example seven
As shown in fig. 4 or 8, the embodiment of the application provides a method for manufacturing a touch display panel 10 in a fourth touch display device, which includes the following steps:
S301, in the process of the array substrate 13, preparing a switching tube layer 131 on the surface of the second substrate 132 to form a display area of the array substrate 13, and reserving a wiring area;
s302, preparing a color film layer 122 on the surface of a first substrate 121 to form a color film substrate 12 in the process of the color film substrate 12;
S303, in the box forming process, the color film substrate 12 and the array substrate 13 are combined to form a liquid crystal box, and liquid crystal is filled in the liquid crystal box to form a liquid crystal layer 40;
s304, preparing a pressure-sensitive adhesive layer 162 on one side of the first substrate 121 far away from the color film layer 122;
s305, arranging the touch layer 11 on one side of the pressure-sensitive adhesive layer 162 far away from the color film substrate 12 in a vacuum sputtering mode;
S306, preparing a polarized layer 161 on one side of the touch layer 11 far away from the pressure-sensitive adhesive layer 162; wherein the polarizing layer 161 and the pressure-sensitive adhesive layer 162 together constitute the upper polarizing structure 16;
In the wiring process of the touch layer 11, the first metal wire 14 is prepared on the side of the color film substrate 12 based on the glass substrate side wiring process, and the first metal wire 14 is led out to the wire area of the array substrate 13.
In application, the manner of directly depositing the touch layer 11 on the first substrate 121 of the color film substrate 12 by vacuum sputtering is limited by the temperature resistance of the material inside the color film substrate 12, and the process conditions for depositing the touch layer 11 are greatly limited, for example, the film forming temperature of the touch layer 11 cannot be too high, the vacuum pressure cannot be too high, etc., while the manner of directly depositing the touch layer 11 on the pressure sensitive adhesive layer of the upper polarizing structure 16 by vacuum sputtering is not limited by the temperature resistance of the material inside the color film substrate 12, so that the process yield and the productivity efficiency can be improved, and meanwhile, the polarizing layer 11 can realize insulation and protection of the touch layer 11.
As shown in fig. 4, in one embodiment, step S306 includes:
A first cellulose triacetate layer 1611, a polyvinyl alcohol layer 1612, a second cellulose triacetate layer 1613 and a hardness layer 1614 are sequentially prepared on one side of the touch layer 11 far from the pressure-sensitive adhesive layer 162, so as to form a polarizing layer 161;
Or sequentially preparing a first cellulose triacetate layer 1611, a polyvinyl alcohol layer 1612 and a first cellulose triacetate layer 1613 on one side of the touch layer 11 far from the pressure-sensitive adhesive layer 162 to form a polarizing layer 161.
Example eight
As shown in fig. 5, in the method for manufacturing the touch display panel 10 in the second touch display device, the third touch display device, or the fourth touch display device, steps S101, S201, or S301 include:
In the process of the array substrate 13, preparing a switching tube layer 131 on the surface of a second substrate 132 to form a display area of the array substrate 13, and reserving a wiring area 133;
after step S101, S201, or S301, it includes:
In the wiring process of the array substrate 13, preparing a second metal wire 17 and a third metal wire 18 in a wiring area 133 of the array substrate 13;
steps S105, S206, or S307 include:
In the wiring process of the touch layer 11, the first metal wire 14 is prepared on the side of the color film substrate 12 based on the glass substrate side wiring process, and the first metal wire 14 is led out to the wire area 133 of the array substrate 13, so as to realize the connection between the first metal wire 14 and the second metal wire 17.
In application, in the wiring process of the array substrate 13, the second metal wiring 17 required for designing the touch layer 11 is reserved in the wiring area 133 of the array substrate 13, and in the wiring process of the touch layer 11, the first metal wiring 14 is led out to the wiring area 133 of the array substrate 13 by using the glass side wiring printing technology, so that the connection between the first metal wiring 14 and the second metal wiring 17 is realized, no additional wiring process is required, and the realization process is simple.
Example nine
As shown in fig. 2, 3, 4 or 5, the embodiment of the present application provides a method for manufacturing a second touch display device, a third touch display device or a fourth touch display device, which further includes the following steps on the basis of the method for manufacturing the touch display panel 10 shown in fig. 6, 7 or 8:
in the bonding process of the touch driving circuit 31 and the display driving circuit 32, the switching tube layers 131 are bonded to the touch driving circuit 31 and the display driving circuit 32 in a one-to-one correspondence manner through the flexible circuit board 20;
the second metal wire 17 is bonded to the flexible circuit board 20, and the flexible circuit board 20 is bonded to the touch driving circuit 31, so that the touch layer 11 sequentially passes through the first metal wire 14, the second metal wire 17 and the flexible circuit board 20 and is bonded to the touch driving circuit 31;
The third metal trace 18 is bonded to the flexible circuit board 20, and the flexible circuit board 20 is bonded to the display driving circuit 32, so that the switching tube layer 131 is bonded to the display driving circuit 32 sequentially through the third metal trace 18 and the flexible circuit board 20.
In application, in the bonding process of the touch driving circuit 31 and the display driving circuit 32, the touch layer 11 and the switch tube layer 131 are bonded to the touch driving circuit 31 and the display driving circuit 32 respectively through the flexible circuit board 20 in a one-to-one correspondence manner, compared with the bonding process of the back end module of the first touch display device, the bonding process of the switch tube layer to the display driving circuit 32 through the second flexible circuit board 22 is firstly performed, and then the touch layer 11 is bonded to the touch driving circuit 31 of the same printed circuit board 30 with the display driving circuit 32 through the first flexible circuit board 21, so that the bonding of the back end module can be realized through only one bonding process, the manufacturing process can be effectively simplified, and the production efficiency and the yield are high.
It should be understood that, the sequence numbers of the steps in the above method embodiments do not mean the execution sequence, and the execution sequence of each process should be determined by the functions and the internal logic, and should not limit the implementation process of the embodiments of the present application.
The above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application.
Claims (10)
1. The utility model provides a touch display panel, includes touch layer, various membrane base plate and the array substrate that stacks gradually and sets up, array substrate is close to one side of various membrane base plate includes the switch tube layer, its characterized in that, the touch layer the switch tube layer is connected with touch drive circuit, the display drive circuit one-to-one that sets up in same printed circuit board through same flexible circuit board, the flexible circuit board set up in the one end of switch tube layer, the touch layer through set up in first metal wire of the side of various membrane base plate with the flexible circuit board is connected.
2. The touch display panel of claim 1, wherein an insulating protection layer is disposed on a side of the first metal trace away from the color filter substrate.
3. The touch display panel of claim 1, wherein a trace area of the array substrate near one end of the flexible circuit board is provided with a second metal trace and a third metal trace;
the touch layer is connected with the flexible circuit board through the first metal wire and the second metal wire in sequence;
The switch tube layer is connected with the flexible circuit board through the third metal wire.
4. The touch display panel according to any one of claims 1 to 3, further comprising an upper polarizing structure, wherein the touch layer is disposed between the upper polarizing structure and the color film substrate.
5. The touch display panel of any one of claims 1 to 3, further comprising an upper polarizing structure comprising a polarizing layer and a pressure sensitive adhesive layer, the touch layer being disposed between the polarizing layer and the pressure sensitive adhesive layer.
6. The touch display panel according to claim 5, wherein the polarizing layer comprises a first cellulose triacetate layer, a polyvinyl alcohol layer, a second cellulose triacetate layer, and a hardness layer laminated in this order on a side of the touch layer remote from the pressure sensitive adhesive layer.
7. A touch display device, comprising the touch display panel according to any one of claims 1 to 6, the flexible circuit board, the touch driving circuit, and the display driving circuit.
8. A method for manufacturing the touch display panel according to any one of claims 1 to 6, comprising:
Preparing a first metal wire on the side edge of the color film substrate in the wire process of the touch control layer;
In the wiring process of the array substrate, preparing a second metal wiring and a third metal wiring in a wiring area of the array substrate;
the first metal wire is used for connecting the touch layer to the second metal wire;
The second metal wire is used for connecting the first metal wire to the flexible circuit board;
The third metal wire is used for connecting the switch tube layer to the flexible circuit board.
9. The method of claim 8, wherein the first metal trace is formed on a side of the color filter substrate based on a glass substrate side routing process.
10. The method for manufacturing a touch display device according to claim 7, comprising:
In the bonding process of the touch control driving circuit and the display driving circuit, the touch control layer and the switching tube layer are bonded to the touch control driving circuit and the display driving circuit in a one-to-one correspondence mode through the flexible circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410073873.9A CN117891360A (en) | 2024-01-18 | 2024-01-18 | Touch display panel and preparation method thereof, touch display device and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410073873.9A CN117891360A (en) | 2024-01-18 | 2024-01-18 | Touch display panel and preparation method thereof, touch display device and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117891360A true CN117891360A (en) | 2024-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410073873.9A Pending CN117891360A (en) | 2024-01-18 | 2024-01-18 | Touch display panel and preparation method thereof, touch display device and preparation method thereof |
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| Country | Link |
|---|---|
| CN (1) | CN117891360A (en) |
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- 2024-01-18 CN CN202410073873.9A patent/CN117891360A/en active Pending
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