CN115390303A - Preparation process of liquid crystal display screen and liquid crystal display screen - Google Patents
Preparation process of liquid crystal display screen and liquid crystal display screen Download PDFInfo
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- CN115390303A CN115390303A CN202211139663.2A CN202211139663A CN115390303A CN 115390303 A CN115390303 A CN 115390303A CN 202211139663 A CN202211139663 A CN 202211139663A CN 115390303 A CN115390303 A CN 115390303A
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Images
Classifications
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F15/00—Screen printers
- B41F15/14—Details
- B41F15/34—Screens, Frames; Holders therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M1/00—Inking and printing with a printer's forme
- B41M1/12—Stencil printing; Silk-screen printing
-
- 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
- G02F1/1303—Apparatus specially adapted to the manufacture of LCDs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
- B41P2215/00—Screen printing machines
- B41P2215/10—Screen printing machines characterised by their constructional features
- B41P2215/12—Screens
Abstract
The invention relates to a preparation process of a liquid crystal display screen and the liquid crystal display screen, wherein the method comprises the following steps: silk-screen printing the conductive adhesive prepared in a preset mode through a screen printing plate to form a silk-screen printing plate with a conductive structure; arranging a silk screen on a first substrate; forming a liquid crystal box on the first substrate or the second substrate, wherein the conductive structure is positioned at the periphery of the liquid crystal box; and aligning and attaching the first substrate and the second substrate to form the liquid crystal display screen. The blended conductive adhesive is silk-screened to form a silk-screen printing plate, and the conductive material in the conductive adhesive is uniformly distributed, so that the problem that poor display of the liquid crystal display screen is caused by poor conductivity due to nonuniform distribution of the conductive material is solved. Through improving the conductivity, can also reduce the defective rejection rate that lacks that bad production of switching on in the LCD screen production process shows badly, reduce the consumptive material.
Description
Technical Field
The invention relates to the technical field of liquid crystal display, in particular to a preparation process of a liquid crystal display screen and the liquid crystal display screen.
Background
With the development of liquid crystal display technology, segment code liquid crystal display is different from dot matrix type liquid crystal display, and its display content, position are relatively fixed, but with price advantage more and more use in fields such as gas meter, water gauge, public transit system, tanker aircraft count display screen, office equipment, fax machine, punched-card machine, attendance machine, access control system. Each segment of the segment code liquid crystal screen is filled with a special liquid material (crystal), the basic principle is that the liquid crystal material is filled between two parallel substrates, the arrangement condition of the inner molecules of the liquid crystal material is changed through voltage, so that the aims of shading and transmitting light are fulfilled to display images with different depths and consistent faults, and if a filter layer of three-component color is added between the two substrates, the color image can be displayed.
In the manufacturing process of the liquid crystal display screen, an upper substrate (such as a color film substrate) or a lower substrate (such as an array substrate) is coated with a conductive adhesive to form a conductive frame adhesive, and the array substrate and the color film substrate are pressed to bond the color film substrate and the array substrate through the conductive frame adhesive to obtain the liquid crystal screen panel. Therefore, the electric connection of the upper substrate and the lower substrate is realized through the conductive adhesive.
However, poor conductivity between the upper substrate and the lower substrate often results from poor conductive paste, which causes a display problem of the display screen.
The above drawbacks are expected to be overcome by those skilled in the art.
Disclosure of Invention
Technical problem to be solved
In order to solve the problems in the prior art, the invention provides a preparation process of a liquid crystal display screen and the liquid crystal display screen, and aims to solve the problem of poor conductivity caused by poor conductive adhesive in the prior art.
(II) technical scheme
In order to solve the above problems, in a first aspect, the present invention provides a process for manufacturing a liquid crystal display panel, the process comprising:
silk-screen printing the conductive adhesive prepared in a preset mode through a screen printing plate to form a silk-screen printing plate with a conductive structure;
arranging a silk screen on a first substrate;
forming a liquid crystal box on the first substrate or the second substrate, wherein the conductive structure is positioned at the periphery of the liquid crystal box;
and aligning and laminating the first substrate and the second substrate to form the liquid crystal display screen.
In an exemplary embodiment of the present invention, the conductive adhesive prepared in a predetermined manner includes:
unfreezing the epoxy resin adhesive used for preparing the conductive adhesive for a first preset time;
adding the conductive material into the unfrozen epoxy resin adhesive according to a preset mass ratio to obtain a mixture;
and stirring the mixture to obtain the blended conductive adhesive.
In an exemplary embodiment of the invention, the first preset time period is at least 3 hours, and the preset mass proportion is greater than or equal to 2%.
In an exemplary embodiment of the invention, the agitating the mixture comprises:
the mixture was stirred centrifugally 2 times for 200 seconds each;
stirring clockwise and anticlockwise for a third preset time;
and stirring the mixture clockwise and anticlockwise for a fourth preset time.
In an exemplary embodiment of the present invention, the forming of the silk-screen printing plate with a conductive structure by silk-screen printing the conductive paste prepared in a preset manner through the printing plate includes:
stretching the polyester screen plate until the tension reaches a first preset value, and keeping the second preset time to enable the tension of the polyester screen plate not to be lower than a second preset value;
silk-screen printing conductive adhesive on a polyester screen;
and attaching the capillary film, and carrying out exposure and development to form the silk-screen printing plate.
In an exemplary embodiment of the invention, the polyester mesh sheet is a 255 mesh sheet, the thickness is 45-55 um, and the aperture ratio is 30-35%.
In an exemplary embodiment of the invention, the first preset value is 30 to 35N, the second preset time is not less than 2 hours, and the second preset value is 25 to 28N.
In an exemplary embodiment of the present invention, the attaching the first substrate and the second substrate to form the liquid crystal display panel includes:
and aligning and attaching the first substrate and the second substrate, and sealing the conductive structure of the silk-screen plate around the liquid crystal box by heating and pressurizing to form the liquid crystal display screen.
In an exemplary embodiment of the invention, the heating process is carried out according to a preset temperature rising curve after rising from the normal temperature to the maximum temperature within a fifth preset time period and continuously keeping at a second high temperature for a sixth preset time period after the temperature is reduced from the maximum temperature to the second high temperature, and the pressure value is 0.6 +/-0.05 kg/cm when pressurizing 2 。
In a second aspect, the invention also provides a liquid crystal display screen, wherein the liquid crystal display screen is obtained based on the preparation process;
a conductive structure is arranged around a liquid crystal box which is arranged between the first substrate and the second substrate in the liquid crystal display screen in a clamping way;
the conductive structure is formed on a silk-screen printing plate, and the silk-screen printing plate is formed by silk-screen printing conductive adhesive prepared according to a preset mode through a screen printing plate.
(III) advantageous effects
The invention has the beneficial effects that: according to the preparation process of the liquid crystal display screen and the liquid crystal display screen, the prepared conductive adhesive is silk-screened to form the silk-screen printing plate, and the conductive materials in the conductive adhesive are uniformly distributed, so that the problem that poor display of the liquid crystal display screen is caused by poor conductivity due to non-uniform distribution of the conductive materials is solved. Through improving the conductivity, can also reduce the defective rejection rate that lacks that bad production of switching on in the LCD screen production process shows badly, reduce the consumptive material.
Drawings
Fig. 1 is a flowchart of a process for manufacturing a liquid crystal display panel according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating the manufacturing process of the silk-screen printing plate in step S100 according to an embodiment of the present invention;
FIG. 3 is a flow chart illustrating the process of fabricating the conductive paste layout in step S100 according to an embodiment of the present invention;
fig. 4 is a schematic view illustrating a configuration of a liquid crystal display panel according to another embodiment of the present invention.
Detailed Description
For the purpose of better explaining the present invention and to facilitate understanding, the present invention will be described in detail by way of specific embodiments with reference to the accompanying drawings.
It should be noted that all the directional indicators (such as upper, lower, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, descriptions such as "first", "second", etc. in the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any data amount indicating the technical feature indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
The conductive adhesive is needed to realize the conduction of the electrodes between the upper substrate and the lower substrate in the processing and preparation process of the segment code type liquid crystal display screen, so that the transmission of electric signals for display is realized, and the display requirement is met. After the upper substrate and the lower substrate are attached, the conductive particles in the conductive adhesive can transmit electrons to realize electrical conduction and can also buffer the pressure of the two substrates after being pressed.
Fig. 1 is a flowchart of a manufacturing process of a liquid crystal display according to an embodiment of the present invention, and the obtained liquid crystal display may be a segment code liquid crystal display product such as TN (Twisted Nematic), STN (Super Twisted Nematic), and the like. As shown in fig. 1, the preparation process comprises the following steps:
step S100, forming a silk-screen printing plate with a conductive structure by silk-screen printing the conductive adhesive prepared in a preset mode through the screen printing plate;
step S200, arranging a silk-screen printing plate on a first substrate;
step S300, forming a liquid crystal box on the first substrate or the second substrate, wherein the conductive structure is positioned around the liquid crystal box;
and S400, aligning and attaching the first substrate and the second substrate to form the liquid crystal display screen.
According to the liquid crystal display screen obtained by the preparation process, the blended conductive adhesive is subjected to silk-screen printing to form the silk-screen printing plate, and the conductive materials in the conductive adhesive are uniformly distributed, so that the problem that poor display of the liquid crystal display screen is caused by poor conductivity due to nonuniform distribution of the conductive materials is solved.
The specific steps of the above preparation process are described below with reference to specific examples:
as shown in fig. 1, in step S100, the conductive paste prepared in a predetermined manner is silk-screened through a screen to form a silk-screen having a conductive structure.
In an exemplary embodiment of the present invention, the conductive paste prepared in the step according to the predetermined manner includes:
unfreezing the epoxy resin adhesive used for preparing the conductive adhesive by utilizing a first preset time;
adding a conductive material into the unfrozen epoxy resin adhesive according to a preset mass ratio to obtain a mixture;
and stirring the mixture to obtain the blended conductive adhesive.
In an exemplary embodiment of the invention, the first preset time period in the above step is at least 3 hours, and the preset mass ratio of the conductive material is greater than or equal to 2%.
In an exemplary embodiment of the present invention, the stirring the mixture in the above step includes:
the mixture was stirred centrifugally 2 times for 200 seconds each;
stirring clockwise and anticlockwise for a third preset time;
and stirring the mixture clockwise and anticlockwise for a fourth preset time.
The third preset time period may be 10 minutes, the fourth preset time period may also be 10 minutes, and the third preset time period may be the same as or similar to the fourth preset time period. After mixing, centrifugal stirring is carried out firstly, so that the conductive material and the colloid are mixed and contacted more fully. And then, carrying out at least two rounds of stirring, wherein the first round of stirring can be clockwise stirring for 10 minutes, then anticlockwise stirring for 10 minutes, then carrying out second round of stirring after upper and lower reverse bottoms are carried out, the stirring time is the same as that of the first round of stirring, and then judging whether to carry out stirring for a third round or above as required.
In an exemplary embodiment of the present invention, the forming of the silk-screen printing plate with a conductive structure by silk-screen printing the conductive paste prepared in a preset manner through the printing plate includes:
stretching the polyester screen plate until the tension reaches a first preset value, and keeping the second preset time to enable the tension of the polyester screen plate not to be lower than a second preset value;
silk-screen printing conductive adhesive on a polyester screen;
and attaching the capillary film, and carrying out exposure and development to form the silk-screen printing plate.
In an exemplary embodiment of the invention, the adopted polyester screen plate is a 255-mesh screen, the thickness is 45-55 um, the opening ratio is 30% -35%, by increasing the opening ratio of the screen plate, the resistance in the subsequent glue application can be reduced, the consistency can be better ensured, and the uniformity of the conductive glue can be improved.
In an exemplary embodiment of the invention, the first preset value of the stretching tension is 30 to 35N, the second preset time is not less than 2 hours, and the second preset value is 25 to 28N.
Fig. 2 is a flowchart illustrating a manufacturing process of the silk-screen printing plate in step S100 according to an embodiment of the present invention, and as shown in fig. 2, the silk-screen printing plate includes the following steps:
in step S101, the web is stretched.
Specifically, a polyester mesh plate with the thickness of 60 mu m, the opening rate of 32 percent and the opening rate of 255 meshes can be used, the opening rate is increased, and the glue dropping resistance is small.
And (3) stretching to a tension of 30-35N on special net stretching equipment, and keeping the tension not lower than 25N for 2 hours. It should be noted that the "tension" herein specifically means N/cm, i.e., stretching the net to 30 to 35N/cm, and maintaining the tension for 2 hours is not less than 25N/cm.
In step S102, glue is applied and dried.
After the net is stretched to 25N, the net is cleaned and dried firstly, then special glue scraper is used for coating and scraping the net sticking glue on the surface of the aluminum frame, and the net sticking glue can be timely wiped off by using dustless cloth which is stained with acetone, so that the net sticking glue can not be scattered into the area in the net frame. After 30 minutes, the adhesive net glue is confirmed to be dried and firmly bonded, the aluminum frame net is cut off by a blade, cleaned by a degreasing agent, and the periphery of the aluminum frame is sealed by an adhesive tape for later use.
In step S103, the capillary film is attached, and after a series of processes of mask exposure, development, and drying, the screen printing plate is manufactured.
In step S103, the film is adhered to the middle position of the screen plate by using the invisible adhesive tape, and when the film is adhered, one side is adhered first, and then the other side is wiped by using a dust-free cloth, so that the film can be tightly adhered to the screen plate, and no gap is ensured between the film and the screen plate. And after the film is pasted, exposing according to the process requirement. If film exposure is selected, the exposure dose in the exposure process is not less than 580mj/cm 2 The exposure can also be adjusted in the process of processing according to the actual developing effect.
And after exposure, developing by using a developing solution for soaking, and drying after the developing meets the requirement.
The conductive adhesive configuring process in step S100 needs to be configured by using a special configuring technology, and fig. 3 is a manufacturing flow chart of the conductive adhesive configuring process in step S100 according to an embodiment of the present invention, and as shown in fig. 3, the method includes the following steps:
in step S111, thawing is performed.
The thawing time is more than 3 hours before the epoxy resin glue used for preparing the conductive glue is prepared. The matrix resin adhesive for preparing the conductive adhesive is an adhesive, conductive particles are combined together through collective resin adhesive to form a conductive path, and the conductive connection of the bonded materials is realized.
In step S112, an auxiliary agent is added.
The conductive adhesive comprises a curing agent, an accelerant and the like besides the epoxy resin adhesive and the conductive material, and the conductive material is added after the auxiliary preparation (generally the curing agent and the accelerant) is added into the epoxy resin adhesive and is uniformly mixed and stirred. Wherein the mass percentage of the curing agent is 1-8 percent, such as 1 percent, 3 percent, 5 percent, 8 percent and the like; the mass percentage of the accelerant is 0.5-4%, such as 0.5%, 1%, 2%, 3% or 4%. By adding a proper amount of curing agent and accelerator, the conductive adhesive can be firmly bonded and can be well conducted.
In step S113, stirring is added.
Specifically, the conductive material is added into the epoxy resin adhesive according to the mass ratio of 2%, and a manual shovel is used for stirring in advance to cover the conductive material, so that the conductive material is prevented from being thrown out in the centrifugal stirring process. And then, stirring for 200 seconds by 2 times by using a centrifugal stirrer, then simply stirring by hand for 10 minutes in a clockwise way, stirring for 10 minutes in an anticlockwise way, stirring the bottom glue to the upper part, then stirring for 10 minutes in the clockwise way and the anticlockwise way, manually stirring the bottom glue to the upper part before use, and then stirring for 2 minutes in the clockwise way. Through centrifugal stirring, multiple stirring and stirring before use, the uniformity of the conductive material in the conductive adhesive is good. By changing the ratio of the conductive material to the epoxy resin adhesive, the adhesive property and conductivity of the conductive adhesive can be controlled. The filled conductive particles have higher proportion and better conductivity, but the bonding strength can be reduced, so that the bonding degree and the conductivity can be ensured simultaneously by improving the uniformity of the conductive material in the conductive adhesive.
In the stirring, the stirring speed is also required to be controlled in addition to the stirring time, and may be, for example, 500 to 700 rpm or 1400 to 1800 rpm. In addition, because the subsequent steps are performed after a certain amount of defoaming is required after stirring, defoaming can be performed for 0.6-2.2 minutes after each round of stirring is completed, so that the mixing uniformity is improved.
The conductive material added to the conductive adhesive may be a metal ball, a microsphere with a metal coating on the outer surface, or a polymer-based conductive ball, such as a carbon nanotube conductive ball. The particle size range of the conductive ball can be 1-10 um, such as the particle size is 1um, 3um, 5um, 7um, 9um or 10um, preferably, the particle size of the conductive ball is 5um. Like this, can make the diameter of carbon nanotube conductive ball can satisfy the conducting resin homogeneity requirement, and cooperate with the liquid crystal layer of different thickness to guarantee the electric property effect of switching on, so that liquid crystal display obtains better display effect.
Putting the screen plate processed according to the figure 2 into a special heating and pressurizing device with the pressure of 0.6 +/-0.05 kg/cm 2 The temperature rise curve is from normal temperature to 210 ℃, the temperature rise time is 30 minutes, and the temperature is naturally reduced to 200 ℃ after the temperature rise and is kept for 180 minutes at the temperature.
Based on the silk screen printing plate, the specially prepared conductive adhesive is matched, the width and the height of the conductive offset printing brush are good in consistency, the appearance color of a finished product is consistent, and meanwhile, the conductive material is uniformly distributed.
In step S200, the screen printing plate is disposed on the first substrate.
Because the first substrate and the second substrate for forming the liquid crystal display screen are an array substrate and a color film substrate respectively, in the step, the silk screen printing plate with the conductive structure is arranged on the array substrate or the color film substrate.
In step S300, a liquid crystal cell is formed on the first substrate or the second substrate, and the conductive structure is located around the liquid crystal cell.
In this step, the liquid crystal cell is fabricated on the first substrate or the second substrate, for example, the liquid crystal cell is fabricated on the first substrate, the conductive structure is also fabricated on the first substrate, the conductive structure is formed around the liquid crystal cell, and the liquid crystal cell is formed with the corresponding second substrate. The upper substrate and the lower substrate are electrically connected through the conductive adhesive, and the substrates and the flexible circuit board are electrically connected, so that the structure is compact. The liquid crystal box can be manufactured on the second substrate, and the position of the liquid crystal box on the second substrate and the position of the conductive structure on the first substrate are arranged in a staggered mode, so that the bonded conductive structure is formed around the liquid crystal box.
In step S400, the first substrate and the second substrate are aligned and bonded to form the liquid crystal display panel.
In an exemplary embodiment of the present invention, the attaching the first substrate and the second substrate to form the liquid crystal display panel includes:
and aligning and attaching the first substrate and the second substrate, and sealing the conductive structure of the silk-screen plate around the liquid crystal box by heating and pressurizing to form the liquid crystal display screen.
In an exemplary embodiment of the present invention, the heating process in this step is to continue to be maintained at the second highest temperature for the sixth preset time period after the temperature is increased from the normal temperature to the highest temperature within the fifth preset time period according to the preset temperature increasing curve and after the temperature is decreased from the highest temperature to the second highest temperature. The pressure value at the time of pressurization in this step was 0.6. + -. 0.05kg/cm 2 。
The first substrate and the second substrate are pressed together through hot pressing to form a liquid crystal box, the thickness of conductive adhesive in the conductive structure is approximately equal to the thickness of the liquid crystal box, the diameter of a conductive material of the conductive structure is smaller than the thickness of the liquid crystal box, the conductive material is uniformly attached to a screen printing plate, and when the screen printing is carried, the pressure of a screen printing scraper is uniformly borne by the numerous small conductive materials instead of directly acting on nodes of the warp and weft yarn cross bulges of the screen, so that the damage to the substrates or the flexible circuit board caused by the overlarge local pressure caused by the bulges at the nodes can be avoided.
The width of the conductive adhesive is less than or equal to 550 micrometers, the conductive materials in the conductive adhesive are uniformly distributed, the width of the conductive adhesive is not limited by conduction points and can be narrowed and adjusted, the product yield can be improved, the sealing and conduction effects of the conductive adhesive are achieved by using a one-time coating technology, in addition, the conductive materials which are uniformly distributed are arranged in the conductive adhesive, and the peripheral supporting effect of the panel is also achieved when the upper substrate and the lower substrate are conducted.
In summary, based on the above-mentioned manufacturing process of the liquid crystal display, the manufacturing process includes the steps of manufacturing the polyester screen printing plate, the conductive adhesive blending technique, the screen printing technique and the high-temperature hot pressing technique, the blended conductive adhesive is screen-printed to form the screen printing plate, and the conductive materials in the conductive adhesive are uniformly distributed, so as to solve the problem that poor display of the liquid crystal display is caused by poor conductivity due to non-uniform distribution of the conductive materials. Through improving the conductivity, can also reduce the defective rejection rate that lacks that bad production of switching on in the LCD screen production process shows badly, reduce the consumptive material. In addition, the process has wide viscosity requirement range on the conductive adhesive, and the recovered adhesive can be used for multiple times, thereby being beneficial to environmental protection and saving consumables.
In a second aspect, the present invention further provides a liquid crystal display panel, the liquid crystal display panel is obtained based on the preparation process described above, fig. 4 is a schematic structural diagram of a liquid crystal display panel provided in another embodiment of the present invention, and as shown in fig. 4, the liquid crystal display panel 400 includes a first substrate 401, a second substrate 402, and a liquid crystal cell 403 sandwiched between the first substrate 401 and the second substrate 402.
The liquid crystal display panel 400 further comprises a conductive structure 404 arranged around a liquid crystal cell 403 sandwiched between a first substrate 401 and a second substrate 402; the conductive structure is formed on a silk-screen printing plate, and the silk-screen printing plate is formed by silk-screen printing conductive adhesive prepared according to a preset mode through a screen printing plate.
The liquid crystal display screen can be a segment code type liquid crystal display screen and is used in liquid crystal display application scenes such as payment and consumption.
It should be understood that the above description of specific embodiments of the present invention is only for the purpose of illustrating the technical lines and features of the present invention, and is intended to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, but the present invention is not limited to the above specific embodiments. It is intended that all such changes and modifications as fall within the scope of the appended claims be embraced therein.
Claims (10)
1. A process for manufacturing a liquid crystal display panel, comprising:
silk-screen printing the conductive adhesive prepared in a preset mode through a screen printing plate to form a silk-screen printing plate with a conductive structure;
arranging a silk screen on a first substrate;
forming a liquid crystal box on the first substrate or the second substrate, wherein the conductive structure is positioned at the periphery of the liquid crystal box;
and aligning and laminating the first substrate and the second substrate to form the liquid crystal display screen.
2. The process for preparing a liquid crystal display panel according to claim 1, wherein the conductive adhesive prepared in a predetermined manner comprises:
unfreezing the epoxy resin adhesive used for preparing the conductive adhesive by utilizing a first preset time;
adding a conductive material into the unfrozen epoxy resin adhesive according to a preset mass ratio to obtain a mixture;
and stirring the mixture to obtain the blended conductive adhesive.
3. The process for manufacturing a liquid crystal display panel according to claim 2, wherein the first predetermined period of time is at least 3 hours, and the predetermined mass ratio is greater than or equal to 2%.
4. The process for manufacturing a liquid crystal display panel according to claim 2, wherein the agitating the mixture comprises:
the mixture was stirred centrifugally 2 times for 200 seconds each;
stirring clockwise and anticlockwise for a third preset time;
and stirring the mixture clockwise and anticlockwise for a fourth preset time.
5. The process for preparing a liquid crystal display screen according to claim 1, wherein the step of forming the silk-screen printing plate with the conductive structure by silk-screen printing the conductive paste prepared in a preset manner through the screen printing plate comprises:
stretching the polyester screen plate until the tension reaches a first preset value, and keeping the second preset time to enable the tension of the polyester screen plate not to be lower than a second preset value;
silk-screen printing conductive adhesive on a polyester screen;
and attaching the capillary film, and carrying out exposure and development to form the silk-screen printing plate.
6. The process for preparing a liquid crystal display screen according to claim 5, wherein the polyester screen is a 255 mesh screen, the thickness is 45-55 um, and the aperture opening ratio is 30-35%.
7. The process for manufacturing a liquid crystal display panel according to claim 5, wherein the first predetermined value is 30 to 35N, the second predetermined period is not less than 2 hours, and the second predetermined value is 25 to 28N.
8. The process of claim 1, wherein the step of attaching the first substrate and the second substrate to form the liquid crystal display comprises:
and aligning and attaching the first substrate and the second substrate, and sealing the conductive structure of the silk-screen plate around the liquid crystal box by heating and pressurizing to form the liquid crystal display screen.
9. The process of claim 8, wherein the heating is continued for a sixth predetermined period of time at a second highest temperature after increasing the temperature from the room temperature to the highest temperature for a fifth predetermined period of time according to a predetermined temperature-increasing curve, and after decreasing the temperature from the highest temperature to the second highest temperature, and the pressure value is 0.6 ± 0.05kg/cm under pressure 2 。
10. A liquid crystal display panel, wherein the liquid crystal display panel is obtained based on the production process according to any one of claims 1 to 9;
a conductive structure is arranged around a liquid crystal box which is arranged between the first substrate and the second substrate in the liquid crystal display screen in a clamping way;
the conductive structure is formed on a silk-screen printing plate, and the silk-screen printing plate is formed by silk-screen printing conductive adhesive prepared according to a preset mode through a screen printing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211139663.2A CN115390303A (en) | 2022-09-19 | 2022-09-19 | Preparation process of liquid crystal display screen and liquid crystal display screen |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211139663.2A CN115390303A (en) | 2022-09-19 | 2022-09-19 | Preparation process of liquid crystal display screen and liquid crystal display screen |
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| WO2015131552A1 (en) * | 2014-03-06 | 2015-09-11 | 京东方科技集团股份有限公司 | Substrate for liquid crystal lens and preparation method therefor, liquid crystal lens and stereoscopic display device |
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| KR20040001112A (en) * | 2002-06-27 | 2004-01-07 | 엘지.필립스 엘시디 주식회사 | Liquid Crystal Cell for Liquid Crystal Display Device and Fabrication Method of The Same |
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