CN111090358A - Touch display panel and manufacturing method thereof - Google Patents
Touch display panel and manufacturing method thereof Download PDFInfo
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- CN111090358A CN111090358A CN201911203867.6A CN201911203867A CN111090358A CN 111090358 A CN111090358 A CN 111090358A CN 201911203867 A CN201911203867 A CN 201911203867A CN 111090358 A CN111090358 A CN 111090358A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/13338—Input devices, e.g. touch panels
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- 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
- G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
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- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
A touch display panel and a manufacturing method thereof are provided, the touch display panel comprises: the liquid crystal display panel comprises an array substrate, a color film substrate and a liquid crystal layer arranged between the array substrate and the color film substrate; a flexible printed circuit board is arranged in a non-display area of the array substrate; a touch layer is arranged in the color film substrate, extends from the color film substrate to one side of the array substrate close to the liquid crystal layer, and is electrically connected with the flexible printed circuit board; the beneficial effects are that: the touch layer is arranged in the color film substrate, extends from the color film substrate layer to the array substrate, is tightly attached to the side face of one side, close to the flexible printed circuit board, of the color film substrate, and is electrically connected with the flexible printed circuit board on the array substrate, the flexible printed circuit board is a circuit board integrating touch control and display driving, the width of a lower frame of the display panel is reduced, meanwhile, the manufacturing process is simple, and the yield of the manufacturing process of the touch display panel is improved.
Description
Technical Field
The present disclosure relates to display technologies, and in particular, to a touch display panel and a manufacturing method thereof.
Background
With the rapid development of electronic devices, manufacturers of large display panels compete with each other, so that the screen occupation ratio of the full-screen display product is higher and higher. In the existing design of an On-cell touch screen, a touch layer and routing wires of an array substrate are not in the same layer but are bound together through a touch driving chip and a display driving chip, so that the process is relatively simple, the process yield is high, but the width of a lower frame of a display panel is large, and the high screen ratio cannot be realized; in the design of an In-cell (In-cell) touch screen, a touch layer and the wiring of an array substrate are directly and completely arranged on the array substrate, so that the width of a lower frame of a display panel can be greatly reduced, but the process is complex and the process yield is low.
Therefore, in the existing touch display panel technology, an On-cell process is adopted for the touch display panel, the touch driving chip and the display driving chip are bound together, the lower frame width of the display panel has a large ratio, and the high screen ratio cannot be realized; in the In-cell process, the touch layer and the array substrate are all disposed on the array substrate, so as to reduce the width of the lower frame of the display panel, but the process is complex and the process yield is low.
Disclosure of Invention
The application relates to a touch display panel and a manufacturing method thereof, which are used for solving the problems that in the prior art, an On-cell process is adopted for the touch display panel, a touch driving chip and a display driving chip are bound together, the width of a lower frame of the display panel is large, and high screen ratio cannot be realized; in the In-cell process, the touch layer and the array substrate are all arranged on the array substrate together, so that the width of the lower frame of the display panel is reduced, but the process is complex and the process yield is low.
In order to solve the above problems, the technical solution provided by the present application is as follows:
the application provides a touch-control display panel, touch-control display panel includes: the liquid crystal display panel comprises an array substrate, a color film substrate and a liquid crystal layer arranged between the array substrate and the color film substrate; wherein the content of the first and second substances,
a flexible printed circuit board is arranged in a non-display area of the array substrate;
the color film substrate is internally provided with a touch layer, the touch layer extends to one side of the array substrate close to the liquid crystal layer from the color film substrate and is electrically connected with the flexible printed circuit board.
According to an embodiment provided by the present application, the flexible printed circuit board is a printed circuit board integrated with a touch control and a display driver.
According to an embodiment provided by the present application, the display area and the non-display area each include: a first side, a second side, a third side and a fourth side; and a touch and display drive integrated chip is further arranged between the flexible printed circuit board in the non-display area and the fourth side edge of the display area, and a touch and display drive integrated chip binding area is further arranged on the two sides of the touch and display drive integrated chip, close to the first side edge of the non-display area and the third side edge of the non-display area.
According to an embodiment provided by the application, one end of the touch and display driver integrated chip binding area is electrically connected with the touch layer, and the other end is electrically connected with the flexible printed circuit board.
According to an embodiment provided by the present application, the touch and display driver ic is divided into: the display device comprises a first touch and display driver integrated chip binding area and a second touch and display driver integrated chip binding area, wherein the first touch and display driver integrated chip binding area is arranged between one side of the touch and display driver integrated chip and a first side edge of a non-display area, and the second touch and display driver integrated chip binding area is arranged between one side of the touch and display driver integrated chip and a third side edge of the non-display area.
According to an embodiment provided by the application, a first substrate base plate is arranged in the array base plate, and a second substrate base plate is arranged in the color film base plate; and the intersection of the surface of one side of the color film substrate, which is close to the fourth side of the non-display area, and the side of the second substrate, which is away from the liquid crystal layer, is rounded.
According to an embodiment provided by the application, the first touch and display driver integrated chip binding region, the second touch and display driver integrated chip binding region and the surface of the color film substrate close to one side of the touch and display driver integrated chip are tightly attached; the surface of one side, away from the liquid crystal layer, of the second substrate base plate is provided with a certain preset roughness on the side covering the touch layer.
According to an embodiment provided by the application, the thickness of the preset roughness is less than or equal to 2 um.
According to an embodiment provided by the present application, the touch layer is made of a metal material or a metal oxide material.
The present application further provides a method for manufacturing a touch display panel, including all the above features of the touch display panel, the method including the steps of:
s10, providing an array substrate, wherein the array substrate comprises a first polarizer, a first substrate, a buffer layer, a shading layer and a plurality of signal routing layers deposited on one side of the buffer layer;
s20, providing a color film substrate, wherein the color film substrate is provided with a color resistance layer and a second substrate, and one side edge of one side of the second substrate, which is far away from the color resistance layer, is rounded;
s30, the array substrate and the color film substrate are boxed, so that the plurality of signal wiring layers are arranged right opposite to the color resistance layer, liquid crystal is injected between the array substrate and the color film substrate, and frame sealing glue is filled around the liquid crystal layer;
s40, arranging a touch and display driving integrated chip and a flexible printed circuit board in a non-display area on one side, close to the color film substrate, of the array substrate;
s50, manufacturing a touch layer on one side of the second substrate, which is far away from the liquid crystal layer, and a touch and display drive integrated chip binding area which is connected with a display area and a non-display area, so that the touch layer extends to the array substrate along one side of a fillet of the color film substrate, and performing high-temperature annealing treatment on the touch layer and the touch and display drive integrated chip binding area to reduce the resistance of the touch layer and the touch and display drive integrated chip binding area;
and S60, sequentially attaching a second polarizer and a cover plate to one side of the touch layer, which is far away from the array substrate.
Compared with the prior art, the touch display panel and the manufacturing method thereof have the beneficial effects that:
1. according to the touch display panel, the touch layer is arranged in the color film substrate, extends from the color film substrate layer to the array substrate, is tightly attached to the side surface of the color film substrate close to one side of the flexible printed circuit board, and is electrically connected with the flexible printed circuit board on the array substrate, and the flexible printed circuit board is a circuit board integrating touch and display driving, so that the width of a lower frame of the display panel is reduced, the manufacturing process is simple, and the yield of the touch display panel manufacturing process is improved;
2. according to the manufacturing method of the touch display panel, an array substrate and a color film substrate only comprising a color resistance layer and a second substrate are formed into a box, then a touch layer and a touch and display drive integrated chip binding area are directly manufactured on one side, away from the array substrate, of the second substrate, the touch layer extends to the array substrate along one side of the color film substrate, high-temperature annealing is carried out on the touch layer and the touch and display drive integrated chip binding area, and finally a second polarizer and a cover plate are attached to one side, away from the array substrate, of the touch layer. The method not only enables the touch layer and the touch and display integrated chip binding area to be integrally formed, but also reduces the resistance of the touch layer and the touch and display integrated chip binding area, reduces the delay of signals and improves the reaction speed of the touch screen.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic view of an internal film structure of a touch display panel according to an embodiment of the present disclosure.
Fig. 2 is a top view of a touch display panel according to an embodiment of the present disclosure.
Fig. 3 is a flowchart illustrating a method for manufacturing a touch display panel according to an embodiment of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. 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, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
The present application provides a touch display panel and a manufacturing method thereof, and particularly refer to fig. 1 to 3.
In order to realize the display with a higher screen ratio of the display panel, manufacturers of the display panel compete with each other to produce the display panel with a high screen ratio. In the existing On-cell touch screen design, a touch layer and a wiring of an array substrate are not arranged in the same layer, and in order to connect the touch layer and the wiring of the array substrate, two driving chips are adopted: the method has the advantages that the process is simple, the process yield is high, the width of the lower frame of the display panel is large, and high-screen-ratio display cannot be realized; in the design of the In-cell touch screen, the touch layer and the routing of the array substrate are directly made together, and although the method can greatly reduce the width of the lower frame of the display panel, the routing design is very complex, the process requirement is high, the process yield is low, and the production and manufacturing cost is increased. Therefore, the present application provides a touch display panel to solve the above problems.
Referring to fig. 1, in an embodiment of the present application, the touch display panel includes: the liquid crystal display panel comprises an array substrate 11, a color film substrate 13 and a liquid crystal layer 12 arranged between the array substrate 11 and the color film substrate 13; wherein, the array substrate 11 includes: the polarizer comprises a first polarizer 111, a first substrate 112, a buffer layer 113, a light shielding layer 114, and a plurality of signal routing layers 115 deposited on one side of the buffer layer 113 away from the first substrate 112, wherein signal routing in the plurality of signal routing layers 115 comprises: scanning lines, data lines, common electrodes, and the like.
Specifically, in one embodiment, the first polarizer 111 is disposed on a side of the substrate 112 facing away from the liquid crystal layer 12; in another embodiment, the first polarizer 111 may also be disposed on a side of the signal routing layers 115 close to the liquid crystal layer 11, so as to prevent external moisture, impurities, and the like from entering the display panel and affecting the polarization effect of the first polarizer 111. In one embodiment, the first substrate 112 may be a rigid substrate, such as a glass substrate or a quartz substrate; a flexible substrate such as a resin substrate, which may be an organic substrate such as a polyimide substrate, a polyamide substrate, a polycarbonate substrate, or a polyether sulfone substrate; in another embodiment of the present application, the first substrate 112 may also be obtained by coating a PI (polyimide film) coater on a clean glass substrate, and then performing a high temperature curing process. The first substrate 111 has good flexibility due to the excellent high and low temperature resistance, electrical insulation, adhesion, radiation resistance, and dielectric resistance of the PI film.
Further, the buffer layer 113 is composed of multiple layers of different organic or inorganic insulating materials. The light-shielding layer 114 is formed in the buffer layer 113, and is made of an insulating non-metallic material, and is used for shielding an active layer in the thin film transistor, so as to prevent external light from irradiating the active layer to affect the performance of the thin film transistor. The signal wiring layers 115 are sequentially stacked and deposited on one side of the buffer layer 113, which is far away from the first substrate 112, so that the display function of the display panel is realized.
In an embodiment provided by the present application, the touch display panel includes: a non-display area 21 and a display area 22, wherein each of the non-display area 21 and the display area 22 comprises four sides, namely a first side 211 of the non-display area, a second side 212 of the non-display area, a third side 213 of the non-display area, and a fourth side 214 of the non-display area; the first side 221 of the display area, the second side 222 of the display area, the third side 223 of the display area, and the fourth side 224 of the display area are shown in fig. 2.
Further, the non-display area 21 of the array substrate 11 is further provided with a flexible printed circuit board 216; a touch layer 133 is arranged in the color film substrate 13, the touch layer 133 extends from the color film substrate 13 to one side of the array substrate 11 close to the liquid crystal layer 12, and is electrically connected to the flexible printed circuit board 216, and the flexible printed circuit board 216 is a printed circuit board integrating touch and display driving.
The color filter substrate 13 includes: a color resistance layer 131, a second substrate base plate 132, a touch layer 133, a second polarizer 134 and a cover plate 136. Specifically, the color resist layer 131 includes a plurality of color sub-pixels and a black matrix 1314, and the plurality of color sub-pixels are: red subpixel 1311, blue subpixel 1312, and green subpixel 1313, or red subpixel 1311, blue subpixel 1312, green subpixel 1313, and white subpixel 1315. Second substrate base plate 132 deposit and be in colour drag layer 131 deviates from one side of liquid crystal layer 12, second substrate base plate 132 deviates from the surface of liquid crystal layer 12 one side covers one side of touch-control layer 133 has certain roughness of predetermineeing, the thickness less than or equal to 2um of predetermineeing roughness makes the roughness on second substrate base plate 132 surface is lower, and the grinding degree is higher, second substrate base plate 132 surface is more smooth, is convenient for touch-control layer 133's deposit preparation. The intersection of the surface of the second substrate 132 near the fourth side 224 of the display region 22 and the surface of the second substrate 132 away from the liquid crystal layer 12 is rounded, so that the touch layer 133 is deposited on the second substrate 132. The touch layer 133 is made of a metal material or a metal Oxide material, such as Indium Tin Oxide (ITO), preferably a metal Oxide material; the second substrate 132 is disposed on a side facing away from the liquid crystal layer 12, and a fourth side 224 closely attached to the display region 22 extends to the array substrate 11 and is electrically connected to the flexible printed circuit board 216 on the array substrate 11. The second polarizer 134 is disposed opposite to the first polarizer 111, and has the same material and property. In another embodiment, if the first polarizer 111 is disposed on one side of the signal routing layers 115 close to the liquid crystal layer 12, the second polarizer 134 is disposed on one side of the color resist layer 131 close to the liquid crystal layer 12, and the function and working principle of the second polarizer are the same as those of the first polarizer 111 disposed on one side of the signal routing layers 115 close to the liquid crystal layer 12, so as to better enhance the polarization effect of the polarizer and reduce the influence of external moisture, impurities and the like on the polarizer. The cover plate 136 is made of transparent glass and arranged on one side of the second polarizer 134 departing from the liquid crystal layer 12, and plays a role in protecting the display panel and isolating external water vapor, impurities and the like.
An Adhesive layer 135 is further disposed between the cover plate 136 and the second polarizer 134, and the Adhesive layer 135 may be an Optically Clear Adhesive (OCA) or an Optically Clear Resin (OCR), and both of the adhesives are transparent Adhesive layers, except that the optically Clear resin can suppress light scattering caused by external light and backlight, compared with a conventional method using an air gap. The glass can react and form rapidly under the irradiation of ultraviolet light, has similar refractive index, light transmittance and yellowing resistance with glass, is soft, can bear the expansion and shrinkage rates of various different base materials, and can resist the problems caused by high and low temperature changes during the lamination. The optical transparent adhesive tape is prepared by making optical acrylic adhesive into a non-base material, then respectively sticking a release film on the upper bottom layer and the lower bottom layer, is a double-sided adhesive tape without the base material, and comprises the following components: high definition, high light transmission, high adhesion, strong water resistance, high temperature resistance, ultraviolet resistance, good die cutting performance, high production yield and the like. Therefore, the optically transparent glue and the optically transparent resin can be used as excellent glue materials for bonding display panels.
Further, a Touch and Display Driver Integration (TDDI) chip 215 is disposed between the flexible printed circuit board 216 of the non-Display area 21 and the fourth side 224 of the Display area 22. Specifically, the touch and display driver integrated chip 215 includes a driving module and a reading module, the driving module is configured to drive the display panel to display an image, and the reading module is configured to read touch signal information received by the touch layer to identify a touch action and position information made by a user on the display panel, so as to reduce a lower frame width of the display panel, improve overall sensing sensitivity, and reduce a problem of a large noise in a system architecture in which an original display and touch chip are separated.
Further, the touch and display driver ic 215 includes two operation modes, i.e., a dual operation mode and a single operation mode, where the dual operation mode indicates that the touch layer can read the touch signal information received while driving the display screen of the display panel; the single operation mode means that only the display panel is driven. When the display panel is used, if the screen of the display panel does not need to be operated or switched for a long time, a single operation mode can be selected, so that the electric quantity can be saved; if the screen of the display panel needs to be switched and operated, the double-operation mode can be selected, so that the screen information and the webpage can be quickly switched.
Further, both sides of the touch and display driver ic 215, which are close to the first side 211 of the non-display area 21 and the third side 213 of the non-display area 21, are further provided with a touch and display driver ic bonding area 217, where the touch and display driver ic bonding area 217 is an extension of the touch layer 133, and the touch and display driver ic bonding area 217 may be made of the same material as or different from the touch layer 133, but has better conductivity. The touch layer 133 is made of a metal material.
Further, one end of the touch and display driver ic bonding area 217 is electrically connected to the touch layer 133, and the other end is electrically connected to the flexible printed circuit board 216. The touch and display driver integrated chip binding area 217 is divided into: a first touch and display driver integrated chip bonding area 2171 and a second touch and display driver integrated chip bonding area 2172, the first touch and display driver integrated chip bonding area 2171 is disposed between one side of the touch and display driver integrated chip 215 and the first side 211 of the non-display area 21, and the second touch and display driver integrated chip bonding area 2172 is disposed between one side of the touch and display driver integrated chip 215 and the third side 213 of the non-display area 21.
Referring to fig. 3, the present application further provides a method for manufacturing a touch display panel, including all the above features of the touch display panel, the method including the following steps: s10, providing an array substrate, wherein the array substrate comprises a first polarizer, a first substrate, a buffer layer, a shading layer and a plurality of signal routing layers deposited on one side of the buffer layer; s20, providing a color film substrate, wherein the color film substrate is provided with a color resistance layer and a second substrate, and one side edge of one side of the second substrate, which is far away from the color resistance layer, is rounded; s30, the array substrate and the color film substrate are boxed, so that the plurality of signal wiring layers are arranged right opposite to the color resistance layer, liquid crystal is injected between the array substrate and the color film substrate, and frame sealing glue is filled around the liquid crystal layer; s40, arranging a touch and display driving integrated chip and a flexible printed circuit board in a non-display area on one side, close to the color film substrate, of the array substrate; s50, manufacturing a touch layer on one side of the second substrate, which is far away from the liquid crystal layer, and a touch and display drive integrated chip binding area for connecting a display area and a non-display area, so that the touch layer extends to the array substrate along one side of a color film substrate with a rounded corner, and performing high-temperature annealing treatment on the touch layer and the touch and display drive integrated chip binding area, thereby reducing the resistance of the touch layer and the touch and display drive integrated chip binding area, reducing the delay of signals, and improving the reaction speed of the touch screen; and S60, sequentially attaching a second polarizer and a cover plate to one side of the touch layer, which is far away from the array substrate. Further, in order to better protect the touch layer and the touch and display driver integrated chip binding area from being scratched, after the touch layer and the touch and display driver integrated chip binding area are annealed, an organic protective film is coated on the surface of the touch layer and the touch and display driver integrated chip binding area, the organic protective film can be polyimide or photoresist and the like, and the thickness of the organic protective film is less than 3 microns.
Therefore, the touch display panel and the manufacturing method thereof have the beneficial effects that: firstly, according to the touch display panel provided by the application, the touch layer is arranged in the color film substrate, the touch layer extends from the color film substrate layer to the array substrate, is tightly attached to the side surface of the color film substrate close to one side of the flexible printed circuit board, and is electrically connected with the flexible printed circuit board on the array substrate, and the flexible printed circuit board is a circuit board integrating touch and display driving, so that the width of the lower frame of the display panel is reduced, the manufacturing process is simple, and the yield of the touch display panel manufacturing process is improved; the manufacturing method of the touch display panel comprises the steps of firstly forming an array substrate and a color film substrate only comprising a color resistance layer and a second substrate into a box, then directly manufacturing a touch layer and a touch and display drive integrated chip binding area on one side, away from the array substrate, of the second substrate, wherein the touch layer extends to the array substrate along one side of the color film substrate, carrying out high-temperature annealing on the touch layer and the touch and display drive integrated chip binding area, and finally attaching a second polarizer and a cover plate on one side, away from the array substrate, of the touch layer. The method not only enables the touch layer and the touch and display integrated chip binding area to be integrally formed, but also reduces the resistance of the touch layer and the touch and display integrated chip binding area, reduces the delay of signals and improves the reaction speed of the touch screen.
The touch display panel and the manufacturing method thereof provided by the embodiment of the present application are described in detail above, a specific example is applied in the description to explain the principle and the embodiment of the present application, and the description of the embodiment is only used to help understanding the technical scheme and the core idea of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.
Claims (10)
1. A touch display panel, comprising: the liquid crystal display panel comprises an array substrate, a color film substrate and a liquid crystal layer arranged between the array substrate and the color film substrate; wherein the content of the first and second substances,
a flexible printed circuit board is arranged in a non-display area of the array substrate;
the color film substrate is internally provided with a touch layer, the touch layer extends to one side of the array substrate close to the liquid crystal layer from the color film substrate and is electrically connected with the flexible printed circuit board.
2. The touch display panel of claim 1, wherein the flexible printed circuit board is a touch and display driver integrated printed circuit board.
3. The touch display panel of claim 1, wherein the display area and the non-display area each comprise: a first side, a second side, a third side and a fourth side; and a touch and display drive integrated chip is further arranged between the flexible printed circuit board in the non-display area and the fourth side edge of the display area, and a touch and display drive integrated chip binding area is further arranged on the two sides of the touch and display drive integrated chip, close to the first side edge of the non-display area and the third side edge of the non-display area.
4. The touch display panel of claim 3, wherein one end of the touch and display driver IC bonding area is electrically connected to the touch layer, and the other end is electrically connected to the flexible printed circuit board.
5. The touch display panel of claim 4, wherein the touch and display driver IC bonding area is divided into: the display device comprises a first touch and display driver integrated chip binding area and a second touch and display driver integrated chip binding area, wherein the first touch and display driver integrated chip binding area is arranged between one side of the touch and display driver integrated chip and a first side edge of a non-display area, and the second touch and display driver integrated chip binding area is arranged between one side of the touch and display driver integrated chip and a third side edge of the non-display area.
6. The touch display panel according to claim 1, wherein a first substrate is disposed in the array substrate, and a second substrate is disposed in the color filter substrate; and the intersection of the surface of one side of the color film substrate, which is close to the fourth side of the non-display area, and the side of the second substrate, which is away from the liquid crystal layer, is rounded.
7. The touch display panel according to claim 6, wherein the first touch and display driver integrated chip bonding area, the second touch and display driver integrated chip bonding area and the surface of the color film substrate on the side close to the touch and display driver integrated chip are closely attached; the surface of one side, away from the liquid crystal layer, of the second substrate base plate is provided with a certain preset roughness on the side covering the touch layer.
8. The touch display panel according to claim 7, wherein the thickness of the predetermined roughness is less than or equal to 2 um.
9. The touch display panel according to claim 1, wherein the touch layer is made of a metal material or a metal oxide material.
10. A method for manufacturing a touch display panel, comprising the features of any of the above touch display panels, the method comprising:
s10, providing an array substrate, wherein the array substrate comprises a first polarizer, a first substrate, a buffer layer, a shading layer and a plurality of signal routing layers deposited on one side of the buffer layer;
s20, providing a color film substrate, wherein the color film substrate is provided with a color resistance layer and a second substrate, and one side edge of one side of the second substrate, which is far away from the color resistance layer, is rounded;
s30, the array substrate and the color film substrate are boxed, so that the plurality of signal wiring layers are arranged right opposite to the color resistance layer, liquid crystal is injected between the array substrate and the color film substrate, and frame sealing glue is filled around the liquid crystal layer;
s40, arranging a touch and display driving integrated chip and a flexible printed circuit board in a non-display area on one side, close to the color film substrate, of the array substrate;
s50, manufacturing a touch layer on one side of the second substrate, which is far away from the liquid crystal layer, and a touch and display drive integrated chip binding area which is connected with a display area and a non-display area, so that the touch layer extends to the array substrate along one side of a fillet of the color film substrate, and performing high-temperature annealing treatment on the touch layer and the touch and display drive integrated chip binding area to reduce the resistance of the touch layer and the touch and display drive integrated chip binding area;
and S60, sequentially attaching a second polarizer and a cover plate to one side of the touch layer, which is far away from the array substrate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911203867.6A CN111090358A (en) | 2019-11-29 | 2019-11-29 | Touch display panel and manufacturing method thereof |
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| CN201911203867.6A CN111090358A (en) | 2019-11-29 | 2019-11-29 | Touch display panel and manufacturing method thereof |
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