CN111123567A - Curved surface coating process for display screen - Google Patents
Curved surface coating process for display screen Download PDFInfo
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- CN111123567A CN111123567A CN202010049060.8A CN202010049060A CN111123567A CN 111123567 A CN111123567 A CN 111123567A CN 202010049060 A CN202010049060 A CN 202010049060A CN 111123567 A CN111123567 A CN 111123567A
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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
- G02F1/1303—Apparatus specially adapted to the manufacture of LCDs
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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
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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
- G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
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- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
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Abstract
The invention relates to a curved surface coating process for a display screen, which relates to the technical field of display screens and comprises the following steps: preparing a square PVC plate, and placing the square PVC plate on a dust-free workbench for positioning; coating a weakly alkaline cleaning agent on the top surface of the PVC sheet to remove stains such as oil, water and the like on the surface of the PVC sheet; pre-cooling the top surface of the PVC plate; coating the PVC raw material in a viscous state on the top surface of the PVC sheet material, wherein the thickness of the PVC raw material is not more than 1 mm; the edge of each smearing region is reserved with a gap from the edge of the last smearing region; heating the edge of the PVC sheet material to soften the PVC sheet material, and reducing the edges and corners of the PVC layer; and grinding and polishing the edges of the PVC layers to form smooth convex arc surfaces at the edges of the multiple PVC layers. The invention has the effect of eliminating the frame between spliced display screens to improve the display effect of the equipment.
Description
Technical Field
The invention relates to the technical field of display screens, in particular to a curved surface coating process for a display screen.
Background
At present, a liquid crystal display is a flat and ultra-thin display device, which is composed of a certain number of color or black and white pixels, and is placed in front of a light source or a reflecting surface, so that the liquid crystal display is widely applied to various electronic devices using batteries due to its advantage of low power consumption.
However, the conventional liquid crystal display panel often has a frame which inevitably affects the display of the edge pixels. Especially, in the display device of the tiled screen, the shading of the frame can make the whole image look like having dark lines, which affects the display effect of the whole display device.
Chinese invention with publication number CN104035233B discloses a display screen frame eliminating device and display equipment, the device includes a light source, a light pipe and a driving module, wherein: the light pipe comprises an upper surface and a lower surface, and the light source is positioned in the light pipe or below the lower surface of the light pipe; the upper surface and the lower surface of the light pipe are covered on the display screen frame and the non-display edge area of the display screen, and the light pipe is used for dispersing and emitting the light emitted by the light source on the upper surface of the light pipe; the driving module is used for driving the light source to emit light according to the light emitting condition of the edge pixels in the display screen. The invention uses the internal light source to emit light rays similar to the adjacent edge pixels in the display screen under the control of the driving module, and realizes the scattered emission of the light rays on the upper surface of the light pipe through the layered light pipe structure with the upper surface and the lower surface, thereby eliminating the display influence of the frame when being seen by human eyes and improving the display effect of the display equipment.
The above prior art solutions have the following drawbacks: the driving module needs to collect the light emitting condition of the pixels at the edge of the display screen to drive the light source to change correspondingly, so that delay exists between the light source and the display screen, and a boundary line can be generated if the color difference of the display screen edge is large before and after a certain time point, so that a frame phenomenon is generated, and the display effect of equipment is influenced.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a curved surface coating process for a display screen, which can eliminate frames between spliced display screens, thereby improving the display effect of equipment.
The above object of the present invention is achieved by the following technical solutions:
a curved surface coating process for a display screen comprises the following steps:
s100: preparing a dust-free workbench, preparing a square PVC plate, placing the PVC plate on the dust-free workbench, and positioning the PVC plate;
s200: coating a weakly alkaline cleaning agent on the top surface of the PVC sheet, removing stains such as oil, water and the like on the surface of the PVC sheet, and taking down the PVC sheet after cleaning;
s300: pre-cooling the top surface of the PVC plate;
s400: coating a PVC raw material in a viscous state on the top surface of a PVC plate, then waiting for the PVC layer to be cured, keeping the coating thickness uniform and keeping the thickness not more than 1mm, and reserving a gap between the edge of a coating area and the edge of the PVC plate;
s500: repeating the step S300 and the step S400 for multiple times, wherein the interval between the edge of each smearing area and the edge of the last smearing area is reserved;
s600: heating the edge of the PVC plate coated with the PVC layer to soften the PVC plate and reduce the edges and corners of the PVC layer;
s700: and grinding and polishing the edge coated with the PVC layer on the PVC plate to form a smooth convex arc surface at the edge of the multilayer PVC layer, wherein the multilayer PVC layer and the PVC plate form the outer screen of the liquid crystal panel.
By adopting the technical scheme, the PVC plate can play roles of protecting the screen, preventing glare and the like when being used as the outer screen of the liquid crystal panel; after the PVC board is coated with the alkalescent cleaning agent, impurities on the surface can be reduced, the influence on the light guide rate of the PVC board is reduced, and the display effect of the display is improved; the PVC sheet is used as a support body, so that the PVC layer can be conveniently coated; pre-cooling the top surface of the PVC plate to prevent the surface of the PVC plate from being softened and deformed after the PVC raw material with higher temperature contacts the PVC plate, so that the processing precision is improved, and the stability of the PVC plate is improved; the PVC layer is coated to enable the edge of the outer screen of the liquid crystal panel to be arc-shaped, so that the display picture of the liquid crystal panel is enlarged after being refracted and scattered by the convex arc surface, the frame is covered, the effect of eliminating the frame is achieved, the light transmission delay is low, and the frame effect generated by delay is reduced.
The present invention in a preferred example may be further configured to: the step S300 further includes a step S310: and coating or spraying a coolant on the surface of the PVC sheet, wherein the coolant has strong volatility.
Through adopting above-mentioned technical scheme, the coolant has strong volatility, can volatilize and take away the heat on PVC panel surface when the coating of coolant is on PVC panel surface to reach the effect of cooling, avoid PVC panel softening.
The present invention in a preferred example may be further configured to: the step S300 further includes a step S320: and putting the PVC plate into a negative pressure box with the air pressure lower than the standard atmospheric pressure.
Through adopting above-mentioned technical scheme, reduce the surface tension who scribbles the PVC stoste on PVC panel through negative pressure environment, reduce the production of bubble to this promotes the impression of LCD panel outer screen, promotes the leaded light rate, thereby promotes the display effect.
The present invention in a preferred example may be further configured to: the step S500 further includes a step S510: the area of the PVC layer coated on the last layer is equal to or smaller than the area of the display area of the corresponding liquid crystal panel, and the intersection point of the diagonal lines of the PVC layer is vertically opposite to the intersection point of the diagonal lines of the frame of the liquid crystal panel.
By adopting the technical scheme, the area of the PVC layer coated on the last layer is equal to or smaller than the area of the display area of the corresponding liquid crystal panel, so that the influence of a frame on the display effect is avoided; the intersection point of the diagonal line of the last coated PVC layer is vertically opposite to the intersection point of the diagonal line of the frame of the liquid crystal panel, so that the plane area of the PVC layer is arranged in the middle, and the distortion phenomenon of the picture is reduced.
The present invention in a preferred example may be further configured to: the step S500 further includes: step S520: the spacing distance reserved between the edge of each painting area and the edge of the last painting area is increased progressively upwards from the PVC board.
Through adopting above-mentioned technical scheme, scribble regional border at every turn and scribble the interval distance that regional border was reserved at last time and increase progressively to this border that makes multilayer PVC layer is partial to the arc profile, with this work load that reduces later stage burnishing and polishing, promotes machining efficiency.
The present invention in a preferred example may be further configured to: the step S600 further includes the steps of: s610: laying a protection plate in the plane area of the topmost PVC layer; s620: coating a PVC raw material in a viscous flow state on the edge of the multilayer PVC layer from bottom to top and waiting for curing; step S630: and cutting off residual PVC waste on the side wall of the edge of the PVC plate.
By adopting the technical scheme, the main display area of the top surface of the PVC is protected by the protection plate, so that the influence on the light guide rate caused by the PVC raw material being infected with or scratches is avoided, and the display effect is improved; PVC raw materials in a viscous flow state are coated on the edges of the multiple PVC layers from bottom to top so as to fill the stepped grooves among the PVC layers, so that the edge areas of the PVC layers are smooth, PVC liquid can smoothly flow into the stepped grooves for filling in the coating mode from bottom to top, the influence of gravity is reduced, and the generation of bubbles is reduced; PVC liquid has the part to flow down and bond on PVC panel border inevitable when the coating, promotes the roughness at PVC panel border through the remaining PVC waste material on the excision PVC panel border lateral wall to this makes things convenient for the seamless concatenation of display.
The present invention in a preferred example may be further configured to: the step S700 further includes: step S710: polishing the side wall of the edge of the PVC plate; s720: and a reflective layer is laid or coated on the side wall of the edge of the PVC plate, and the reflective surface of the reflective layer faces the side wall of the PVC plate.
Through adopting above-mentioned technical scheme, at PVC panel border lateral wall polishing earlier then lay or coat one deck reflector layer, and the reflector surface of reflector layer is towards PVC panel lateral wall to this scattered light that reflection backlight produced promotes the inside luminance of liquid crystal display panel, reduces the light that PVC panel border was seen through, avoids producing the facula on supports such as wall body support display and influences the use experience of display.
The second purpose of the invention is to provide a borderless display, which can eliminate the borders between the spliced display screens, thereby improving the display effect of the equipment.
The above object of the present invention is achieved by the following technical solutions: a borderless display comprises a shell and a liquid crystal panel outer screen connected with the shell.
The present invention in a preferred example may be further configured to: the liquid crystal display panel is provided with an annular groove in an encircling manner on the outer screen, the shell is provided with a slot matched with the inner wall of the annular groove in an inserting manner, and the peripheral side wall of the shell is flush with the side wall of the outer screen edge of the liquid crystal display panel when the outer screen of the liquid crystal display panel is inserted into the shell.
Through adopting above-mentioned technical scheme, the installation that the slot through the casing realized the LCD panel outer screen with the cooperation of annular is fixed, and the all lateral walls of casing and LCD panel outer screen border lateral wall parallel and level when the LCD panel outer screen was pegged graft with the casing reduce the gap of a plurality of no frame display to this makes things convenient for the concatenation of a plurality of no frame displays, thereby improves display effect.
The present invention in a preferred example may be further configured to: be provided with a plurality of lugs on the inner wall of casing, it is a plurality of the lug encircles casing interval distribution, the one end of lug is sharp-pointed form and towards one side of LCD panel outer screen, works as in the lug inserts the LCD panel outer screen when LCD panel outer screen is pegged graft with the casing, one side that the LCD panel outer screen was kept away from to the lug is provided with the barb, the profile of lug is the pointed end and the shells inner wall interval distribution of obtuse angle triangle-shaped form and barb, works as barb and LCD panel outer screen butt when LCD panel outer screen was pegged graft with the casing.
By adopting the technical scheme, the outer screen of the liquid crystal panel is made of the transparent PVC material, and when the lug is inserted into the outer screen of the liquid crystal panel, the surface of the lug is abutted against the outer screen of the liquid crystal panel, so that the contact area between the outer screen of the liquid crystal panel and the shell is increased, and the connection strength of the outer screen of the liquid crystal panel and the shell is improved; one end of the convex block is sharp, so that the convex block can be conveniently cut into the outer screen of the liquid crystal panel; barb and the outer screen butt of LCD panel on the lug when the lug inserts the outer screen of LCD panel, and the most advanced and the shells inner wall interval distribution of barb to this avoids the outer screen of LCD panel to break away from the casing, with this stability that improves the outer screen of LCD panel, prolongs the life of display.
In summary, the invention includes at least one of the following beneficial technical effects:
the PVC plate is used as a support body, so that the PVC layer can be conveniently coated; pre-cooling the top surface of the PVC plate to prevent the surface of the PVC plate from being softened and deformed after the PVC raw material with higher temperature contacts the PVC plate, so that the processing precision is improved, and the stability of the PVC plate is improved; the PVC layer is coated to enable the edge of the outer screen of the liquid crystal panel to be arc-shaped, so that the display picture of the liquid crystal panel is enlarged after being refracted and scattered by the convex arc surface, the frame is covered, the effect of eliminating the frame is achieved, the light transmission delay is low, and the frame effect generated by the delay is reduced;
when the cooling agent is coated on the surface of the PVC plate, the cooling agent can volatilize and take away the heat on the surface of the PVC plate, so that the effect of cooling is achieved, and the PVC plate is prevented from softening;
the scattered light generated by the backlight is reflected by the reflecting surface of the reflecting layer, the internal brightness of the liquid crystal panel is improved, the light transmitted out from the edge of the PVC plate is reduced, and the influence on the use experience of the display due to the fact that light spots are generated on supports such as a wall body for supporting the display is avoided.
Drawings
FIG. 1 is a block flow diagram of an embodiment of the present invention;
FIG. 2 is a schematic diagram of the overall structure of an embodiment of the present invention;
fig. 3 is a partially enlarged schematic view of a portion a in fig. 2.
Reference numerals: 1. a housing; 11. a bump; 12. a barb; 13. a slot; 2. an outer screen of the liquid crystal panel; 21. and a ring groove.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1 and fig. 2, the invention discloses a curved surface coating process for a display screen, which comprises the following steps:
s100: preparing a dust-free workbench, wherein the dust-free workbench adopts a K-1811 dust-free workbench, then preparing a square PVC plate, the PVC plate is integrally injection-molded by PVC liquid, the overall outline of the PVC plate is cuboid and is consistent with the length and the width of the liquid crystal panel, and then placing the PVC plate on the dust-free workbench and positioning the PVC plate by a simple clamp.
S200: coating alkalescent cleaning agent on PVC panel top surface, alkalescent cleaning agent adopts the glass cleaning agent of K26754 model, can get rid of stains such as PVC panel surface oil content, moisture to this reduces the influence to PVC panel leaded light rate, promotes the display effect of display. And taking down the PVC plate after cleaning.
S300: and pre-cooling the top surface of the PVC plate.
S310: during precooling, a coolant is coated or sprayed on the surface of the PVC plate, the coolant is ethanol which has strong volatility, and the ethanol can take away heat on the surface of the PVC plate when volatilizing on the surface of the PVC plate, so that the effect of cooling is achieved, and the PVC plate is prevented from softening.
S320: after precooling, the PVC plate is placed into a negative pressure box, the negative pressure box adopts a sealed glass experiment box, and the negative pressure box is pumped by a vacuum pump until the internal air pressure is lower than the standard atmospheric pressure, so that the density of dust is reduced, and the processing quality is improved. And the inside of the experimental box is provided with gloves, so that an operator can conveniently process and treat the PVC plate.
S400: the PVC raw material in the viscous state is uniformly coated on the top surface of the PVC plate through a coating roller or other coating devices to form a square PVC layer, then the PVC layer is waited for solidification, the coating thickness is kept uniform, the thickness of the single-layer PVC layer is not more than 1mm, and therefore air bubbles are conveniently eliminated and the air bubble phenomenon is reduced. And the edge of the smearing area is spaced from the edge of the PVC plate in a reserved mode.
S500: and repeating the step S300 and the step S400 for multiple times, namely coating a PVC layer, then coating after curing, and reserving a gap between the edge of the coating area and the edge of the previous coating area each time.
S510: and the area of the PVC layer coated on the last layer is equal to or smaller than the area of the display area of the corresponding liquid crystal panel, so that the display effect is prevented from being influenced by the generation of a frame. And the intersection point of the diagonal lines of the PVC layer is vertically opposite to the intersection point of the diagonal lines of the frame of the liquid crystal panel, so that the plane area of the PVC layer is arranged in the center and is opposite to the display picture of the liquid crystal panel, and the distortion phenomenon of the picture is reduced.
S520: and the interval distance of smearing regional border and last smearing regional border at every turn when upwards smearing from the PVC panel increases progressively to this border that makes multilayer PVC layer is partial to the arc profile, with this work load that reduces later stage burnishing and polishing, promotes machining efficiency.
S600: the edge of the PVC plate coated with the PVC layer is heated to be softened, so that the edges and corners of the PVC layer are reduced, and the edge area of the PVC layer tends to be smooth.
S610: the protection shield is laid in the planar region on top layer PVC layer, and the protection shield adopts materials such as aluminum plate that light and hardness are high to this main display area who protects the PVC top surface, with this avoid the PVC top surface to be infected with the PVC raw materials or draw the mar and influence the leaded light rate, thereby promote ultimate display effect.
S620: PVC raw materials in a viscous flow state are coated on the edges of the multiple PVC layers from bottom to top and wait for solidification, so that stepped grooves between the PVC layers are filled, the edge areas of the PVC layers are smooth, the PVC raw materials are compensated, and polishing is facilitated. And the PVC liquid can smoothly flow into the stepped groove for filling by the coating mode from bottom to top, so that the influence of gravity is reduced, and the generation of bubbles is reduced.
S630: and cutting off residual PVC waste on the side wall of the edge of the PVC plate. Because PVC liquid has inevitable part to flow down and bond on PVC panel border when the coating, consequently need increase the step of excision PVC waste material remaining on the PVC panel border lateral wall to this roughness that promotes PVC panel border, makes things convenient for the seamless concatenation of display with this.
S700: and taking down the protection plate, and then grinding and polishing the edge coated with the PVC layer on the PVC plate to form a smooth convex arc surface at the edge of the multilayer PVC layer, wherein the multilayer PVC layer and the PVC plate form a liquid crystal panel outer screen 2.
S710: and polishing the side wall of the edge of the PVC plate to ensure that the side wall of the PVC plate is kept vertical and smooth.
S720: lay or coat one deck reflector layer on PVC panel border lateral wall, the reflector layer adopts aluminium foil paper, and it is fixed to bond through glue with PVC panel border, and the reflector surface of reflector layer is towards PVC panel lateral wall to this scattered light that produces is shaded in reflection promotes the inside luminance of liquid crystal display panel, reduces the light that PVC panel border was seen through, avoids producing the facula on supports such as wall bodies support display and influences the use experience of display.
Referring to fig. 2, the borderless display disclosed by the present invention comprises a casing 1 and a liquid crystal panel outer screen 2, wherein a ring groove 21 is circumferentially arranged on the liquid crystal panel outer screen 2, the concave side of the ring groove 21 faces one side of the casing 1, a slot 13 which is in inserting fit with the inner wall of the ring groove 21 is arranged on the casing 1, the slot 13 is square, and the slot 13 of the casing 1 is matched with the ring groove 21 to realize the installation and fixation of the liquid crystal panel outer screen 2. When the outer screen 2 of liquid crystal display panel is spliced with the casing 1, the side wall of the periphery of the casing 1 is parallel and level with the side wall of the outer screen 2 edge of the liquid crystal display panel, so that gaps of a plurality of frameless displays are reduced, splicing of the plurality of frameless displays is facilitated, and the display effect is improved.
Referring to fig. 2 and 3, a plurality of protrusions 11 are disposed on the inner wall of the housing 1, that is, the inner wall of the slot 13, the plurality of protrusions 11 are distributed around the housing 1 at intervals, the contour of each protrusion 11 is an obtuse triangle, one end of each protrusion is sharp and is integrally formed with the inner wall of the housing 1, and the sharp end of each protrusion faces one side of the outer screen 2 of the liquid crystal panel. When the outer screen 2 of the liquid crystal panel is spliced with the shell 1, the edge of the outer screen 2 of the liquid crystal panel is heated to be softened, so that the sharp end of the lug 11 cuts the side wall of the outer screen 2 of the liquid crystal panel and is inserted into the outer screen 2 of the liquid crystal panel, and when the outer screen 2 of the liquid crystal panel is solidified, the lug 11 is embedded into the outer screen 2 of the liquid crystal panel. The arrangement of the plurality of bumps 11 can increase the contact area between the liquid crystal panel outer screen 2 and the shell 1, so as to improve the connection strength between the liquid crystal panel outer screen 2 and the shell, and one end of each bump 11 is sharp, so that the bumps 11 can be conveniently cut into the liquid crystal panel outer screen 2.
One side that liquid crystal display panel outer screen 2 was kept away from to lug 11 is provided with barb 12, barb 12 and 11 integrated into one piece of lug, the most advanced and 1 inner wall interval distribution of casing of barb 12 and its orientation and the opposite direction of inserting of liquid crystal display panel outer screen 2. Barb 12 and the outer 2 butts of screen of LCD panel when LCD panel outer screen 2 is pegged graft with casing 1 to this joint strength who improves LCD panel outer screen 2 and casing 1 avoids LCD panel outer screen 2 to break away from casing 1, with this stability that improves LCD panel outer screen 2, prolongs the life of display.
The implementation principle of the embodiment is as follows: the PVC plate is used as a support body, so that the PVC layer can be conveniently coated, and meanwhile, the PVC plate and the PVC layer are made of the same material, so that chromatic aberration is reduced, and the phenomenon of picture distortion is reduced. And the top surface of the PVC plate is precooled, so that the surface of the PVC plate is softened and deformed after the PVC raw material with higher temperature is contacted with the PVC plate, the processing precision is improved, and the stability of the PVC plate is improved. And the negative pressure environment in the negative pressure box can reduce the surface tension of the PVC stock solution smeared on the PVC plate, reduce the generation of bubbles, thereby promoting the appearance of the liquid crystal panel outer screen 2, promoting the light guide rate and promoting the display effect.
The PVC plate and the multiple PVC layers form the liquid crystal panel outer screen 2, and the effects of protecting the screen, preventing glare and the like can be achieved. The PVC layer is coated to enable the edge of the outer screen 2 of the liquid crystal panel to be arc-shaped, so that the display picture of the liquid crystal panel is enlarged after being refracted and scattered by the convex arc surface, the frame is covered, and the effect of eliminating the frame is achieved; and the optical transmission delay is low, thereby reducing the frame effect generated by the delay.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (10)
1. A curved surface coating process for a display screen is characterized by comprising the following steps:
s100: preparing a dust-free workbench, preparing a square PVC plate, placing the PVC plate on the dust-free workbench, and positioning the PVC plate;
s200: coating a weakly alkaline cleaning agent on the top surface of the PVC sheet, removing stains such as oil, water and the like on the surface of the PVC sheet, and taking down the PVC sheet after cleaning;
s300: pre-cooling the top surface of the PVC plate;
s400: coating a PVC raw material in a viscous state on the top surface of a PVC plate, then waiting for the PVC layer to be cured, keeping the coating thickness uniform and keeping the thickness not more than 1mm, and reserving a gap between the edge of a coating area and the edge of the PVC plate;
s500: repeating the step S300 and the step S400 for multiple times, wherein the interval between the edge of each smearing area and the edge of the last smearing area is reserved;
s600: heating the edge of the PVC plate coated with the PVC layer to soften the PVC plate and reduce the edges and corners of the PVC layer;
s700: and (3) grinding and polishing the edge coated with the PVC layer on the PVC plate to enable the edges of the multiple PVC layers to form a smooth convex arc surface, and enabling the multiple PVC layers and the PVC plate to form the outer screen (2) of the liquid crystal panel.
2. The process of claim 1, wherein the step S300 further comprises a step S310 of: and coating or spraying a coolant on the surface of the PVC sheet, wherein the coolant has strong volatility.
3. The process of claim 2, wherein the step S300 further comprises the step S320: and putting the PVC plate into a negative pressure box with the air pressure lower than the standard atmospheric pressure.
4. The process of claim 1, wherein the step S500 further comprises a step S510 of: the area of the PVC layer coated on the last layer is equal to or smaller than the area of the display area of the corresponding liquid crystal panel, and the intersection point of the diagonal lines of the PVC layer is vertically opposite to the intersection point of the diagonal lines of the frame of the liquid crystal panel.
5. The process of claim 4, wherein the step S500 further comprises: step S520: the spacing distance reserved between the edge of each painting area and the edge of the last painting area is increased progressively upwards from the PVC board.
6. The process of claim 1, wherein the step S600 further comprises the steps of: s610: laying a protection plate in the plane area of the topmost PVC layer; s620: coating a PVC raw material in a viscous flow state on the edge of the multilayer PVC layer from bottom to top and waiting for curing; step S630: and cutting off residual PVC waste on the side wall of the edge of the PVC plate.
7. The process of claim 1, wherein the step S700 further comprises: step S710: polishing the side wall of the edge of the PVC plate; s720: and a reflective layer is laid or coated on the side wall of the edge of the PVC plate, and the reflective surface of the reflective layer faces the side wall of the PVC plate.
8. A borderless display applying the curved surface coating process of the display screen according to any one of claims 1 to 7 is characterized by comprising a shell (1) and a liquid crystal panel outer screen (2) connected with the shell (1).
9. The curved surface coating process of claim 8, wherein the outer screen (2) of the liquid crystal panel is provided with a circular groove (21) in a surrounding manner, the housing (1) is provided with a slot (13) which is matched with the inner wall of the circular groove (21) in an inserting manner, and when the outer screen (2) of the liquid crystal panel is inserted into the housing (1), the peripheral side wall of the housing (1) is flush with the side wall of the edge of the outer screen (2) of the liquid crystal panel.
10. The curved surface coating process for the display screen according to claim 9, wherein a plurality of bumps (11) are arranged on the inner wall of the shell (1), the bumps (11) are distributed around the shell (1) at intervals, one end of each bump (11) is sharp and faces one side of the outer screen (2) of the liquid crystal panel, when the outer screen (2) of the liquid crystal panel is spliced with the shell (1), the bumps (11) are inserted into the outer screen (2) of the liquid crystal panel, one side of each bump (11) far away from the outer screen (2) of the liquid crystal panel is provided with the barbs (12), the contour of each bump (11) is the tip of the obtuse triangle and the barbs (12) and the inner wall of the shell (1) at intervals, and when the outer screen (2) of the liquid crystal panel is spliced with the shell (1), the barbs (12) abut against the outer screen (2) of the liquid crystal panel.
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