CN104407726B - A kind of integrated touch function display screen and its manufacture method - Google Patents
A kind of integrated touch function display screen and its manufacture method Download PDFInfo
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- CN104407726B CN104407726B CN201410237587.8A CN201410237587A CN104407726B CN 104407726 B CN104407726 B CN 104407726B CN 201410237587 A CN201410237587 A CN 201410237587A CN 104407726 B CN104407726 B CN 104407726B
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
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- 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
-
- 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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- Engineering & Computer Science (AREA)
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- Optics & Photonics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical & Material Sciences (AREA)
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- General Engineering & Computer Science (AREA)
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Abstract
The present invention relates to a kind of integrated touch function display screen and its manufacture method, it is characterised in that the integrated touch function display screen includes：One first substrate；One tft layer；One first both alignment layers；One layer of liquid crystal molecule；One second both alignment layers；Some insulated columns；Color filter layers；And a second substrate；The display screen can be made using traditional handicraft, it would however also be possible to employ 3D makes；The integrated touch function display screen is equipped with driving and processing assembly again, it is possible to realizes and touches and display function.Insulated column of the present invention both realizes realization isolation and supporting role, and the lead on second substrate is connected on first substrate while realize again；Touch unit is made under display, effective increase shows aperture opening ratio.Some processes employ 3D printing technique simultaneously, are greatly simplified compared with conventional method, save the multiple tracks complicated technologies such as traditional handicraft exposure, development, etching, save raw materials for production and manufacturing cost.
Description
Technical Field
The invention relates to a manufacturing method of a touch screen, in particular to an integrated touch function display screen and a manufacturing method thereof, which are applied to display and touch equipment.
Background
Touch screen operation is a novel operation mode, and at present, the touch screen operation tends to replace traditional keys, a mouse and a keyboard, and people adopt the touch screen to replace other input equipment as a new operation mode of electronic products for convenience in operation. Firstly, a touch screen arranged at the front end of a display screen is touched by a finger or other objects, and then a control center analyzes the coordinates of a contact point through signals of the touch screen and controls the touch screen.
The integrated touch function display screen, also called an IN-CELL touch screen, is characterized IN that the touch function is arranged inside the display panel, so that the touch screen can be thinner, and the integrated touch function display screen has wide market prospect. Apple, samsung, etc. have been studied in this field and applied for a number of patents.
In the integrated touch screen, the main processes comprise a TFT process, a photoetching process, a film coating process and the like, and the processes usually need a plurality of yellow light procedures, so that the reduction of the process flow has great significance on the yield, the complexity and the like of products. Since the TFT process requires more elaborate fabrication, and material research. In the electrode and lead manufacturing, a printing mode or 3D printing can be adopted for replacement, so that a simpler process is obtained. Cleaning ITO glass as the pattern made by traditional technique; spin coating or roller coating photoresist and prebaking; exposing the photoresist through a mask plate; fourthly, generating a photoresist pattern by using a developing solution and hardening the photoresist pattern; etching the area without the protection of the photoresist by using an etching solution; sixthly, removing the photoresist by using the degumming solution to form an ITO electrode pattern and other process flows.
In conclusion, aiming at the problems of complexity, yield, raw material waste and the like of the existing touch screen manufacturing process, the process which is simple and saves raw materials is provided by combining the advantages of 3D printing, and the process is significant.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, combines the advantages of 3D printing and provides an integrated touch function display screen and a manufacturing method thereof.
The technical scheme of the invention is as follows:
an integrated touch-capable display screen, comprising:
a first substrate;
a thin film transistor layer; the touch panel comprises a TFT element, a first pixel scanning line, a first pixel data line, a first pixel electrode, a first touch driving line, a first touch driving electrode and a second touch sensing electrode; a dielectric layer and a plurality of interconnect pillars; one end of the first pixel scanning line is connected with the grid electrode of the TFT element, and the other end of the first pixel scanning line is connected with the outside to be used as an interface; one end of the first pixel data line is connected with the drain electrode of the TFT element, and the other end of the first pixel data line is connected with the outside to be used as an interface; the first pixel electrode is connected with a TFT element source electrode; one end of the first touch electrode is connected with the first touch driving line, and the other end of the first touch driving line is connected to the outside and used as an interface; the second touch sensing electrode is connected with the interconnection column;
a first alignment layer;
a liquid crystal molecular layer;
a second alignment layer;
the isolation columns are made of conductive materials; the isolation column has the functions of realizing isolation and support, and simultaneously realizing the connection of the lead on the second substrate to the first substrate;
the color filter layer comprises a color filter film, a second pixel electrode, a second touch detection line and a dielectric layer; wherein the second touch detection line is connected to a second touch sensing electrode on the first substrate through the isolation pillar and an interconnection pillar;
and a second substrate, a liquid crystal attaching frame, and upper and lower substrate connection points.
The isolation column comprises two or more than two superposed layers and comprises a common conductive column and an adhesive column;
the first touch driving electrode and the second touch sensing electrode are located below the first pixel electrode.
The first alignment layer and the second alignment layer are manufactured by 3D printing; the first alignment layer and the second alignment layer are oriented vertically or in parallel according to the type of the liquid crystal screen; the first or second alignment layer is composed of grooves which are parallel to each other, and the shape of the groove can be V-shaped, trapezoid or cube.
The isolation column is manufactured by 3D printing; the materials for the 3D printing isolation columns are all conductive materials and are composed of two or more than two materials which are stacked, wherein the uppermost layer material is a curable material and is used for connecting the second touch detection lines.
One or more elements in the first pixel data line, the first pixel electrode, the second pixel electrode and the second touch detection line are manufactured by 3D printing; the 3D printing material is a transparent conductive material.
The light filter film is manufactured by 3D printing; the three nozzles equipped with the three-primary-color coloring material are respectively used for printing the filter film; the filter coating also needs to utilize a transparent medium to print a protective layer for protecting the filter coating and preventing the filter coating from falling off to influence the display effect.
A method for manufacturing an integrated touch function display screen is characterized by comprising the following steps:
s11: manufacturing an ITO pattern on a first substrate by using a film coating and photoetching process, wherein the ITO pattern comprises a TFT grid electrode, a first pixel scanning line, a first touch driving electrode and a second touch induction electrode;
s12: manufacturing an insulating medium layer on the first substrate by using a coating and photoetching process, wherein the insulating medium layer comprises a through hole;
s13: manufacturing a semiconductor channel layer on a first substrate by using a doping process;
s14: manufacturing a drain electrode and a source electrode of the TFT element on a first substrate by using a film coating process;
s21: modeling by adopting computer three-dimensional image processing software;
s22: layering the established three-dimensional model by using software to obtain a two-dimensional sublayer with the thickness of 0.05 microns in the Z-axis direction;
s23: importing the two-dimensional sub-layers into a 3D printer program, obtaining materials and shapes on two-dimensional planes of each layer according to the established model, and designing a printing path;
s31: placing the first substrate in a 3D printing forming cavity, vacuumizing and introducing inert gas to form a protective atmosphere;
s32: manufacturing the first pixel scanning line and the first pixel electrode on a first substrate by using a film coating process;
s33: 3D printing the first alignment layer on a first substrate;
s34: 3D printing the isolation column on the first substrate;
s41: placing the second substrate in a 3D printing forming cavity, vacuumizing and introducing inert gas to form a protective atmosphere; the first pixel electrodes on the first substrate correspond to the first pixel electrodes one by one, and the color filter film graph is manufactured on the second substrate;
s42: manufacturing the second touch detection line on a second substrate by using coating and photoetching processes;
s43: manufacturing a dielectric layer on the second substrate by using a coating process, wherein the dielectric layer comprises a through hole;
s44: manufacturing a second pixel electrode on a second substrate by using a film coating and photoetching process;
s45: filling a conductive adhesive in the through hole on the second substrate;
s46: 3D printing a second alignment layer on a second substrate;
s51: 3D printing, dispensing and connecting upper and lower substrate leads on the second substrate;
s52: coating frame glue on four side lines of the second substrate, wherein the frame glue contains a pouring liquid crystal molecular port;
s61: aligning and attaching the upper and lower substrates, and utilizing hot curing frame glue;
s62: filling liquid crystal molecules by using a liquid crystal filling machine, and sealing by using UV (ultraviolet) glue;
s63: and splitting, namely leading out an electrode by using an FPC lead wire and attaching a polaroid to form the integrated touch function display screen.
The invention has the advantages that:
the invention makes the touch unit under the display, and effectively increases the display aperture ratio. Meanwhile, 3D printing technology is adopted in part of processes, so that the method is greatly simplified compared with the traditional method, a plurality of complex processes such as exposure, development and etching in the traditional process are omitted, and production raw materials and manufacturing cost are saved.
Drawings
Fig. 1 is a schematic structural diagram of a display screen with integrated touch function according to a first embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a first substrate according to a first embodiment of the invention.
FIGS. 3 to 4 are process flow diagrams of the first embodiment of the present invention.
Fig. 5 is a schematic structural diagram of a display screen with integrated touch function according to a second embodiment of the present invention.
Fig. 6 is a schematic structural diagram of a first substrate according to a second embodiment of the present invention.
FIGS. 7 to 8 are process flow diagrams of a second embodiment of the present invention.
Detailed Description
In order to make the aforementioned and other features and advantages of the invention more comprehensible, embodiments accompanied with figures are described in detail below.
The present invention will be described in further detail below with reference to specific examples.
As shown in fig. 1 to 2, in the present embodiment, an integrated touch screen and a manufacturing method thereof are provided, where the integrated touch screen includes:
a first substrate (11);
a thin film transistor layer; comprises a TFT element (121), a first pixel scanning line (122), a first pixel data line (123), a first pixel electrode (124), a first touch driving line (125), a first touch driving electrode (126) and a second touch sensing electrode (127); a dielectric layer (128) and a number of interconnect pillars (129); one end of the first pixel scanning line (122) is connected with a grid electrode (1211) of the TFT element, and the other end of the first pixel scanning line is connected with the outside to be used as an interface; one end of the first pixel data line (123) is connected with the drain electrode (1212) of the TFT element, and the other end is connected with the outside as an interface; the first pixel electrode (124) is connected with a TFT element source electrode (1213); one end of the first touch electrode (126) is connected with the first touch driving line (125), and the other end of the first touch driving line (125) is connected to the outside to serve as an interface; the second touch sensitive electrode (127) is connected (129) to the interconnection post;
a first alignment layer (13);
a layer (14) of liquid crystal molecules;
a second alignment layer (15);
the isolation columns (16) are made of conductive materials; the isolation column (16) is used for realizing isolation and support, and simultaneously realizing connection of a lead on the second substrate to the first substrate; the first touch drive electrode (126) and the second touch sense electrode (127) are located below the first pixel electrode (124);
a color filter layer (17) including a color filter film (171), a second pixel electrode (172), a second touch detection line (173), and a dielectric layer (128); wherein the second touch detection line (173) is connected to a second touch sensing electrode (127) on the first substrate (11) through the isolation pillar (16) and an interconnection pillar (129);
a second substrate (18), a liquid crystal bonding frame (191), and upper and lower substrate connection points (192);
in the invention, the isolation column (16) has two functions of supporting and conducting, and because the upper and lower substrates are formed by laminating, if the isolation column (16) is manufactured from the first substrate (11), the adhesion between the isolation column and the second substrate (18) is a little poor, so in the embodiment, the isolation column (16) comprises two parts, namely a common conductive column (161) and a conductive adhesive column (162), so that the adhesion between the isolation column and the second substrate (18) is improved;
the invention provides an integrated touch function display screen and a manufacturing method thereof, wherein the manufacturing method can be manufactured by only adopting the traditional semiconductor process, photoetching and film coating technology, or can also comprise one-step or multi-step 3D printing technology; in the present embodiment, the conventional semiconductor, photolithography, and plating techniques are used for illustration;
as shown in fig. 3 to 4, in this embodiment, a manufacturing process of an integrated touch display screen is provided, which is as follows:
s111: manufacturing an ITO pattern on a first substrate by using a film coating and photoetching process, wherein the ITO pattern comprises a TFT grid (1211), a first pixel scanning line (122), a first touch driving line (125), a first touch driving electrode (126) and a second touch sensing electrode (127);
s112: manufacturing an insulating medium layer (128) comprising a through hole (1281) on the first substrate by using a coating and photoetching process;
s113: fabricating a semiconductor channel layer (1214) on a first substrate using a doping process;
s114: manufacturing a TFT drain electrode (1212) and a source electrode (1213) on a first substrate by using a coating process;
s115: manufacturing a first pixel scanning line (122) and a first pixel electrode (124) on a first substrate by using a coating process;
s116: on the first substrate, PI was roll-coated, and rubbing alignment was performed to obtain a first alignment layer (13). The undulations in the figure are only schematic and do not affect the rubbing orientation effect.
S117: on the first substrate, spacer columns (16) are screen-printed.
S121: making color filter film (171) patterns on the second substrate in one-to-one correspondence with the pixel electrodes (124) on the first substrate;
s122: manufacturing a second touch detection line (173) on the second substrate by using a coating and photoetching process;
s123: manufacturing a dielectric layer (128) comprising a through hole (1282) on the second substrate by using a coating process;
s124: manufacturing a second pixel electrode (172) on a second substrate by using a film coating and photoetching process;
s125: filling a conductive adhesive (162) in the through hole (1282) on the second substrate;
s126: rolling PI on a second substrate to manufacture a second alignment layer (15);
s131: printing dots and dispensing (192) are carried out on the second substrate, and the upper substrate lead and the lower substrate lead are connected;
s132: coating frame glue (191) on four side lines of the second substrate, wherein the frame glue contains a perfusion liquid crystal molecular port;
s133: aligning and attaching the upper and lower substrates, and thermally curing the frame glue (191) by using an oven;
s134: filling liquid crystal molecules by using a liquid crystal filling machine, and sealing by using UV (ultraviolet) glue;
s135: and splitting, namely leading out an electrode by using an FPC lead wire and attaching a polaroid to form the integrated touch function display screen.
Briefly describing the operation principle of the present embodiment, in the present embodiment, the second touch detection line (173) communicates with the second touch sensing electrode (127) through the isolation pillar (16) and the interconnection pillar (129), and forms a capacitance with the first touch driving electrode (126). When no finger touches, the first touch driving line (125) drives an alternating current, and due to the sensing capacitance of the first touch driving electrode (126) and the second touch sensing electrode (127), the second touch detection line (173) detects the alternating current, and the touch detection chip obtains no touch information. When a finger touches, the alternating current on the second touch detection line (173) is absorbed by the finger and becomes direct current, namely, the touch detection chip judges that the touch occurs, and then the touch point of the finger is judged according to the row and column positions of the first touch drive line (125) and the second touch detection line (173).
To this end, the 3D manufacturing of the display screen with integrated touch function according to the first embodiment of the present invention is completed.
As shown in fig. 5 to 6, in a second embodiment of the present invention, an integrated touch screen and a method for manufacturing the same are provided, where the integrated touch screen includes:
a first substrate (21);
a thin film transistor layer; comprises a TFT element (221), a first pixel scanning line (222), a first pixel data line (223), a first pixel electrode (224), a first touch driving line (225), a first touch driving electrode (226) and a second touch sensing electrode (227); a dielectric layer (228) and a number of interconnect pillars (229); one end of the first pixel scanning line (222) is connected with a grid electrode (2211) of the TFT element, and the other end of the first pixel scanning line is connected with the outside to be used as an interface; one end of the first pixel data line (223) is connected with the TFT element drain electrode (2212), and the other end is connected with the outside as an interface; the first pixel electrode (224) is connected with a TFT element source electrode (2213); one end of the first touch electrode (226) is connected with the first touch driving line (225), and the other end of the first touch driving line (225) is connected to the outside as an interface; the second touch sensitive electrode (227) is connected (229) to the interconnection post;
a first alignment layer (23);
a layer (24) of liquid crystal molecules;
a second alignment layer (25);
the isolation columns (26) are made of conductive materials; the isolation column (26) is used for realizing isolation and support, and simultaneously realizing connection of the lead on the second substrate to the first substrate; the first touch drive electrode (226) and the second touch sense electrode (227) are located below the first pixel electrode (224);
a color filter layer (27) including a color filter film (271), a second pixel electrode (272), a second touch detection line (273), and a dielectric layer (228); wherein the second touch detection line (273) is connected to the second touch sensing electrode (227) on the first substrate (21) through the separation column (26) and the interconnection column (229);
a second substrate (28), a liquid crystal bonding frame (291), and upper and lower substrate connection points (292);
in the invention, the isolation column (26) has two functions of supporting and conducting, and because the upper and lower substrates are formed by laminating, if the isolation column (26) is manufactured from the first substrate (21), the adhesion between the isolation column and the second substrate (28) is a little poor, so in the embodiment, the isolation column (26) comprises two parts, namely a common conductive column (261) and a conductive adhesive column (262), so that the adhesion between the isolation column and the second substrate (28) is improved;
the invention provides an integrated touch function display screen and a manufacturing method thereof, wherein the manufacturing method can be manufactured by only adopting the traditional semiconductor process, photoetching and film coating technology, or can also comprise one-step or multi-step 3D printing technology; in the embodiment, part of the processes adopt the traditional semiconductor, photoetching and film coating technologies, and part of the processes adopt 3D printing;
referring to fig. 7 to 8, the present embodiment provides a manufacturing process of a touch-function integrated display, wherein steps S211 to S214 are conventional semiconductor processes, and steps S221 to S263 adopt a 3D printing process; the manufacturing process of the display screen with integrated touch function provided in this embodiment is as follows:
s211: manufacturing an ITO pattern on a first substrate by using a coating and photoetching process, wherein the ITO pattern comprises a TFT grid (2211), a first pixel scanning line (222), a first touch driving line (225), a first touch driving electrode (226) and a second touch sensing electrode (227);
s212: on the first substrate, an insulating medium layer (228) is manufactured by using a coating and photoetching process and comprises a through hole (2281);
s213: on the first substrate, a semiconductor channel layer (2214) is manufactured by a doping process;
s214: manufacturing a TFT drain electrode (2212) and a TFT source electrode (2213) on a first substrate by using a film coating process;
s221: modeling by adopting computer three-dimensional image processing software, such as Solidworks, Solidwedge, Pro/e, UG and the like;
s222: layering the established three-dimensional model by using RP-Tools software to obtain a two-dimensional sublayer with the thickness of 0.05 microns in the Z-axis direction;
s223: importing the two-dimensional sub-layers into a 3D printer program, obtaining materials and shapes on two-dimensional planes of each layer according to the established model, and designing a printing path;
s231: placing the first substrate in a 3D printing forming cavity, vacuumizing and introducing inert gas such as argon to form a protective atmosphere;
s232: manufacturing a first pixel scanning line (222) and a first pixel electrode (224) on a first substrate by using a 3D printing technology; the first pixel scanning line (222) and the first pixel electrode (224) are made of transparent conductive materials;
s233: on the first substrate, a first alignment layer (23) is 3D printed. The first alignment layer is manufactured by 3D printing; the first or second alignment layer (25) is composed of mutually parallel grooves, and the shapes of the grooves can be V-shaped, trapezoid, cube and the like; in this embodiment, the groove is V-shaped.
S234: 3D printing the isolation column on the first substrate; the isolation column is manufactured by 3D printing; the materials for the 3D printing isolation columns are all conductive materials and are composed of two or more than two materials which are stacked, wherein the uppermost layer material is a curable material and is used for connecting the second touch detection lines.
S241: placing the second substrate in a 3D printing forming cavity, vacuumizing and introducing inert gas such as argon to form a protective atmosphere; making color filter film (271) patterns on the second substrate in one-to-one correspondence with the pixel electrodes (224) on the first substrate; printing RGB three-color colorant by using 3 nozzles; the filter film also needs to utilize a transparent medium to print a protective layer for protecting the filter film and preventing the filter film from falling off to influence the display effect;
s242: creating second touch detection lines (273) on a second substrate by 3D printing;
s243: 3D printing a medium layer (228) on the second substrate; the dielectric layer is made of insulating material.
S244: 3D printing and manufacturing a second pixel electrode (272) on a second substrate;
s245: 3D printing a conductive adhesive (262) on the through hole (2282) on the second substrate; wherein the conductive adhesive is OC glue;
s246: 3D printing a second alignment layer (25) on a second substrate in step S234 of the embodiment; the first alignment layer (23) and the second alignment layer (25) are oriented vertically or in parallel according to different liquid crystal technologies and the types of liquid crystal screens; in the embodiment, the liquid crystal box is a TN liquid crystal box, and the first alignment layer (23) and the second alignment layer (25) are oriented vertically;
s251: 3D printing point glue (292) is arranged on the second substrate, and leads of the upper substrate and the lower substrate are connected;
s252: coating frame glue (291) on four side lines of the second substrate, wherein the frame glue contains a perfused liquid crystal molecular port;
s261: aligning and bonding the upper and lower substrates, and using hot curing frame glue (291);
s262: filling liquid crystal molecules by using a liquid crystal filling machine, and sealing by using UV (ultraviolet) glue;
s263: and splitting, namely leading out an electrode by using an FPC lead wire and attaching a polaroid to form the integrated touch function display screen.
Wherein,
the first pixel data line (223), the first pixel electrode (224), the second pixel electrode (272) and the second touch detection line (273) are manufactured by 3D printing; the 3D printing material is a transparent conductive material; meanwhile, in the present embodiment, a printing medium material is also required. The method for 3D printing of the transparent conductive material comprises the following steps: and according to the pattern of the required conducting layer or the lead, the 3D printing nozzle extrudes photosensitive slurry provided with ITO particles at the corresponding position, and the UV optical head moves along the pattern of the conducting layer to solidify the ITO conducting layer. According to the required dielectric layer pattern, the 3D printing nozzle extrudes the prepared glass cement photosensitive paste at the corresponding position, the UV optical head moves along the dielectric layer pattern to cure the required insulating dielectric layer.
The principle of the display screen with integrated touch function provided in this embodiment is the same as that of the first embodiment, and details are not repeated here.
To this end, the 3D manufacturing of the display screen with integrated touch function according to the second embodiment of the present invention is completed.
The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the present invention.
Claims (3)
1. An integrated touch-capable display screen, comprising:
a first substrate;
a thin film transistor layer; the touch panel comprises a TFT element, a first pixel scanning line, a first pixel data line, a first pixel electrode, a first touch driving line, a first touch driving electrode and a second touch sensing electrode; a dielectric layer and a plurality of interconnect pillars; one end of the first pixel scanning line is connected with the grid electrode of the TFT element, and the other end of the first pixel scanning line is connected with the outside to be used as an interface; one end of the first pixel data line is connected with the drain electrode of the TFT element, and the other end of the first pixel data line is connected with the outside to be used as an interface; the first pixel electrode is connected with a TFT element source electrode; one end of the first touch driving electrode is connected with one end of the first touch driving line, and the other end of the first touch driving line is connected to the outside and used as an interface; the second touch sensing electrode is connected with the interconnection column;
a first alignment layer;
a liquid crystal molecular layer;
a second alignment layer;
the isolation columns are made of conductive materials; the isolation column has the functions of realizing isolation and support, and simultaneously realizing the connection of the lead on the second substrate to the first substrate;
the color filter layer comprises a color filter film, a second pixel electrode, a second touch detection line and a dielectric layer; wherein the second touch detection line is connected to a second touch sensing electrode on the first substrate through the isolation pillar and an interconnection pillar;
the second substrate, the liquid crystal attaching frame, the upper substrate connecting point and the lower substrate connecting point are arranged on the first substrate;
the first alignment layer and the second alignment layer are manufactured by 3D printing; the first alignment layer and the second alignment layer are oriented vertically or in parallel according to the type of the liquid crystal screen; the first or second alignment layer is composed of grooves which are parallel to each other, and the shape of the groove can be V-shaped, trapezoid or cube;
the materials for the 3D printing isolation columns are all conductive materials and are stacked by two or more materials, wherein the uppermost layer material is a curable material and is used for connecting the second touch detection line;
one or more elements in the first pixel data line, the first pixel electrode, the second pixel electrode and the second touch detection line are manufactured by 3D printing; the 3D printing material is a transparent conductive material;
the light filter film is manufactured by 3D printing; the three nozzles equipped with the three-primary-color coloring material are respectively used for printing the filter film; the filter coating also needs to utilize a transparent medium to print a protective layer for protecting the filter coating and preventing the filter coating from falling off to influence the display effect.
2. The display screen of claim 1, wherein the spacer comprises two or more stacked spacers, each spacer comprising a common conductive pillar and an adhesive pillar; the first touch driving electrode and the second touch sensing electrode are located below the first pixel electrode.
3. A method for manufacturing an integrated touch function display screen is characterized by comprising the following steps:
s11: manufacturing an ITO pattern on a first substrate by using a film coating and photoetching process, wherein the ITO pattern comprises a TFT grid electrode, a first pixel scanning line, a first touch driving electrode and a second touch induction electrode;
s12: manufacturing an insulating medium layer on the first substrate by using a coating and photoetching process, wherein the insulating medium layer comprises a through hole;
s13: manufacturing a semiconductor channel layer on a first substrate by using a doping process;
s14: manufacturing a drain electrode and a source electrode of the TFT element on a first substrate by using a film coating process;
s21: modeling by adopting computer three-dimensional image processing software;
s22: layering the established three-dimensional model by using software to obtain a two-dimensional sublayer with the thickness of 0.05 microns in the Z-axis direction;
s23: importing the two-dimensional sub-layers into a 3D printer program, obtaining materials and shapes on two-dimensional planes of each layer according to the established model, and designing a printing path;
s31: placing the first substrate in a 3D printing forming cavity, vacuumizing and introducing inert gas to form a protective atmosphere;
s32: manufacturing the first pixel scanning line and the first pixel electrode on a first substrate by using a film coating process;
s33: 3D printing a first alignment layer on a first substrate;
s34: 3D printing the isolation column on the first substrate; the isolation column has the functions of realizing isolation and support, and simultaneously realizing the connection of the lead on the second substrate to the first substrate;
s41: placing the second substrate in a 3D printing forming cavity, vacuumizing and introducing inert gas to form a protective atmosphere; the first pixel electrodes on the first substrate correspond to the first pixel electrodes one by one, and the color filter film graph is manufactured on the second substrate;
s42: manufacturing a second touch detection line on a second substrate by using coating and photoetching processes;
s43: manufacturing a dielectric layer on the second substrate by using a coating process, wherein the dielectric layer comprises a through hole;
s44: manufacturing a second pixel electrode on a second substrate by using a film coating and photoetching process;
s45: filling a conductive adhesive in the through hole on the second substrate;
s46: 3D printing a second alignment layer on a second substrate;
s51: 3D printing, dispensing and connecting upper and lower substrate leads on the second substrate;
s52: coating frame glue on four side lines of the second substrate, wherein the frame glue contains a pouring liquid crystal molecular port;
s61: aligning and attaching the upper and lower substrates, and utilizing hot curing frame glue;
s62: filling liquid crystal molecules by using a liquid crystal filling machine, and sealing by using UV (ultraviolet) glue;
s63: and splitting, namely leading out an electrode by using an FPC lead wire and attaching a polaroid to form the integrated touch function display screen.
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| CN105117073B (en) * | 2015-09-29 | 2019-02-26 | 京东方科技集团股份有限公司 | A kind of touch-control display panel and touch control display apparatus |
| CN106094358B (en) * | 2016-08-09 | 2018-10-30 | 深圳市华星光电技术有限公司 | The processing procedure of liquid crystal cell and its black matrix |
| CN107123654A (en) * | 2017-05-26 | 2017-09-01 | 京东方科技集团股份有限公司 | Array base palte and preparation method thereof and display device |
| CN109212802B (en) * | 2017-07-06 | 2021-05-18 | 京东方科技集团股份有限公司 | Touch panel, preparation method thereof and display device |
| CN109189255A (en) * | 2018-07-12 | 2019-01-11 | 深圳市华星光电半导体显示技术有限公司 | Touch-control display panel |
| CN111273816A (en) * | 2020-01-19 | 2020-06-12 | 无锡变格新材料科技有限公司 | Touch panel and preparation method thereof |
| CN111309176A (en) * | 2020-01-19 | 2020-06-19 | 无锡变格新材料科技有限公司 | Touch panel and preparation method thereof |
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| CN101470288B (en) * | 2007-12-28 | 2012-12-05 | 三星电子株式会社 | Display panel and method for manufacturing the same |
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| US20070002192A1 (en) * | 2005-06-29 | 2007-01-04 | Casio Computer Co., Ltd. | Liquid crystal display apparatus including touch panel |
| CN101305338B (en) * | 2006-03-08 | 2012-04-25 | 夏普株式会社 | Display device |
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| CN101470288B (en) * | 2007-12-28 | 2012-12-05 | 三星电子株式会社 | Display panel and method for manufacturing the same |
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