CN107121867B - Method for manufacturing reflective large-pixel color display dot matrix module - Google Patents
Method for manufacturing reflective large-pixel color display dot matrix module Download PDFInfo
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- CN107121867B CN107121867B CN201710290328.5A CN201710290328A CN107121867B CN 107121867 B CN107121867 B CN 107121867B CN 201710290328 A CN201710290328 A CN 201710290328A CN 107121867 B CN107121867 B CN 107121867B
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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
- G02F1/21—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 by interference
Abstract
The invention relates to a method for manufacturing a reflective large-pixel color display dot matrix module, which comprises the following steps: arranging a plurality of movable lenses into a lattice structure and placing the lattice structure on a semi-transparent reflective surface of a panel, wherein the reflective surface of each movable lens is tightly attached to the semi-transparent reflective surface of the panel; part or all side surfaces of the movable lens are connected with the semi-transparent reflective surface of the panel through elastic braces; a plurality of support columns are adhered to the semi-transparent reflective surface of the panel, the support columns are arranged in a dot matrix, and a plurality of support columns are arranged on the periphery of each movable lens; and covering a back plate on the back surface of the movable lens, wherein the surface of the back plate provided with the electrode faces the back surface of the movable lens, and the back plate is adhered to the support column. The lattice module made by the invention becomes a self-integrated single product or the minimum unit for splicing outdoor large-scale display screens. The manufacturing method is simple, the micro-assembly method is used, the semiconductor packaging method is used for packaging, and the manufacturing is completed through the addition packaging process, so that the purposes of high brightness, low power consumption and low manufacturing cost are achieved.
Description
Technical Field
The invention relates to the technical field of color display, in particular to a manufacturing method of a reflective large-pixel color display dot matrix module.
Background
The prior display screen generally adopts a luminous display screen which has some defects. People often find themselves blindly looking at the screen of a cell phone outdoors because the brightness of the display is not strong enough to overcome the brightness of the ambient light. The light emitted from the display screen can also cause eye strain, particularly in children whose eyes are still in development, and such lighted screens can cause significant injury to the eyes of the child.
More importantly, taking a mobile phone as an example, in the working state of the light-emitting display during normal shutdown, the liquid crystal display still consumes more than 70% of the power consumption of the whole mobile phone, and only about 6% of the power consumption of the liquid crystal display comes from the backlight source of the panel. The demand for energy for mobile displays has increased at a rate of 25-35% year by year, with less than 6% increase in battery capacity per year. This growing gap needs to be addressed fundamentally to make mobile devices more energy efficient, healthy, and environmentally friendly.
All the above problems cannot be solved by any existing luminescent color display screen technology. A thorough solution must come from electronic paper or Reflective Color Display (RCD) technology, using ambient light to Display the image as printing on paper.
RCD has received much attention in recent years, however, no RCD product meeting the market requirements has appeared on the market so far. Currently, RCD panels typically contain an array of bi-stable light modulators, each generating a specific primary color, the colors being modulated mixed by a combination of RGB colors, achieving multiple colors requiring smaller and denser sub-pixels to express one of the three primary colors. The sub-pixels are arranged on the same substrate layer and are staggered in space to form a dot matrix. The desired color and gray scale is achieved by adjusting the on-off state of the sub-pixels.
There are two fundamental problems with current RCD technology. The first problem is also the most serious one reflected in low reflectance and low color gamut. Improving the reflectivity and simplifying the manufacturing process are two basic goals that have not been achieved by the reflective display industry to date. Although the application of RGB color modulation to a light emitting or light transmitting display is successful, the application to an RCD display has a fatal problem. The result is that the efficiency of light reflection is very low (typically below 20%) and the color produced under normal ambient light conditions is unacceptable to the market.
In an RGB system the color of a pixel is usually achieved by color mixing of the sub-pixels. For a given pixel, 1/3 of its area is assigned to one of the three primary colors, including all the sub-pixels of that primary color. Thus, each sub-pixel exclusively displays a certain primary color. Incident light associated with the other two primary colors is fully absorbed at such sub-pixels. For example, if a pixel is required to display fully saturated red, only the sub-pixel assigned to red can reflect red, and the sub-pixels assigned to green and blue can only remain black, with the result that the color reflected from an RGB pixel is only 1/3 for the incident light. The net effect is that 1/3 saturated with red mixes with two black colors (the areas allocated to green and blue), resulting in very low color saturation and brightness. The reflectivity of the pixel is theoretically only 33%, and the color quality is poor. With reference to the Printing standard SNAP (Specifications for Non-healthcare adaptation Printing), the reflectance should be greater than 57% or more, while a theoretical reflectance of 33% makes any RGB based RCD technology impractical.
Another problematic issue is that resolution and gray scale are limited by the sub-pixel size. Spatial color and bi-stable subpixel dithering require three closely placed groups of primary color elements to achieve gray levels of color. This requires a large number of sub-pixels at high density and row and column connection lines to drive and control them. Even if it could be realized, the manufacturing cost is extremely expensive.
The development of low power Reflective Color Displays (RCDs) that produce realistic colors has been costly. Reflective color displays are suitable for use in a variety of portable devices, but are not yet commercially available due to manufacturing difficulties, low color brightness and high cost. Overcoming these limitations requires a continuously high investment, so few companies and institutions are willing to afford it.
For example, reflective displays are manufactured by conventional high-cost MEMS processes to achieve high resolution, requiring complex CMOS integrated circuit fabrication processes such as: film deposition, photoresist coating, mask plate alignment exposure, etching, stripping, cleaning, surface treatment and structure verification. Some processes must be repeated many times, including the use and handling of highly toxic and corrosive substances. The situation is worse because the problems of release tack and use tack are more costly.
Low brightness is also an important side-effect, limiting the wide commercial use of reflective color displays. Modern color display technology is essentially based on color mixture matching in the RGB color space. This implies that the matching colors must also have the same brightness to achieve the same visual effect. This is the case for emissive and transmissive display pixels, which are easily satisfactory, but reflective colour display pixels are not suitable for use with the RGB chromaticity space, since two thirds of the ambient light must be wasted, thereby reducing the resulting brightness to unacceptable levels.
Today, low cost and high performance reflective color displays are still not available in the outdoor market. Current outdoor applications, such as billboards and signage, use either a fixed printed picture display or a high power LED display array. LCD displays are also expensive and difficult to view in intense sunlight, and viewing high resolution pictures at a great distance does not present the advantage of high resolution.
Disclosure of Invention
The invention provides a method for manufacturing a reflective large-pixel color display dot matrix module, which aims to solve the technical problems. The display can display full saturated color, normal environment and high brightness. The manufacturing method is simple, a display dot matrix module, namely a standard analog large pixel, is manufactured by a micro-assembly method, and outdoor color display is realized through accurate electrostatic driving. The low resolution pixel array is fabricated by an inexpensive additive packaging process, ready for parts, and then assembled together to form an integral and integrated structure that avoids the photolithographic process of conventional micro-electro-mechanical systems (MEMS) and is packaged by low cost semiconductor packaging methods, enabling the dot matrix module to maintain large parallel interference surfaces while having high color purity, high reflectivity optical accuracy.
The large pixels made up of moving mirrors that the present invention achieves include, but are not limited to, square, hexagonal, triangular, or arbitrarily shaped pixels. The following further describes the technical solution of the present invention by taking a square pixel as an example.
The technical problem of the invention is mainly solved by the following technical scheme: the invention discloses a reflective large-pixel color display dot matrix module, which comprises a plurality of movable lenses, a plurality of support columns, a panel and a back plate, wherein the size of the panel and the size of the back plate are consistent with that of the dot matrix module, and when a person is positioned in front of a display surface of the dot matrix module, the panel, the plurality of movable lenses arranged in a dot matrix and the back plate are sequentially arranged from front to back. The panel includes transparent panel and plates the metal level of producing light interference at the transparent panel back, this metal level constitutes half transmitting reflection of light face, the one side of moving the lens is reflection of light face, there is the conducting film another side and four sides of moving the lens, a plurality of moving lenses are located the panel back, arrange according to the dot matrix, and the reflection of light face of moving the lens contacts with the half transmitting reflection of light face of panel, four sides of moving the lens link to each other through the half transmitting reflection of light face of elasticity brace and panel, the elasticity brace has electric conductivity, the side through moving the lens switches on with the back of moving the lens. The outside at four angles of every removal lens all has a support column, and the semi-transparent reflection of light face bonding of front end and the panel of support column, the rear end and the backplate bonding of support column, the backplate is equipped with the electrode towards the one side of removing the mirror surface. The signal formed by the display driving system is applied to the electrode of the back plate through a circuit connecting line, the electrode applies electrostatic force to the movable lens, the movable lens can move in submicron level in the vertical direction of the movable lens under the control of the pulling force generated by the elastic riblets and the pulling force generated by the electrostatic force of the back plate, and the movable lens is parallelly pulled close to or pulled away from the back plate, so that the distance between the semi-transparent reflecting surface of the panel and the reflecting surface of the movable lens is changed, namely the distance between two interference surfaces is changed, and the color change of the pixel corresponding to each movable lens is realized. Each pixel on the reflective large pixel color display dot matrix module can realize that the whole visible spectrum can continuously generate each unique color of the color, so that the numbers and the letters can be displayed through the color combination of the pixel points on the module. The movable lens can also be arranged into a 7-segment nixie tube display module structure or other special patterns. The arrangement of the plurality of dot matrix modules can be used for splicing various patterns for outdoor advertising boards or other outdoor industrial display applications.
The manufacturing method of the reflective large-pixel color display dot matrix module comprises the following steps: preparing a panel, a back plate, a plurality of movable lenses and a plurality of support columns, wherein the size of the panel and the size of the back plate are consistent with that of the dot matrix module, one surface of the panel is a semi-transparent reflective surface, one surface of each movable lens is a reflective surface, conductive films are arranged on the other surface and four side surfaces of each movable lens, and one surface of the back plate is provided with a plurality of electrodes; the manufacturing method of the reflective large-pixel color display dot matrix module comprises the following steps:
arranging a plurality of movable lenses into a lattice structure to be placed on a semi-transparent reflective surface of a panel, wherein the reflective surface of each movable lens is tightly attached to the semi-transparent reflective surface of the panel;
four side surfaces of the movable lens are connected with the semi-transparent reflective surface of the panel through elastic braces;
thirdly, a plurality of support columns are bonded on the semi-transparent reflective surface of the panel, the support columns are arranged in a dot matrix, and the periphery of each of four corners of each movable lens is provided with one support column;
covering a back plate on the back surface of the movable lens, wherein the surface of the back plate provided with the electrode faces the back surface of the movable lens, and the back plate is adhered to the support pillar.
The lattice module manufactured by the technical scheme becomes an independent product which is integrated into a whole or the minimum unit for splicing outdoor large-scale display screens. In order to reflect a standard color, the deviation of the interference cavity depth must be controlled within 40 nm. The movable lenses can also be arranged into a 7-segment nixie tube display module structure to form a 7-segment display module; or arranged into other special patterns to form a display module capable of displaying the special patterns. The manufacturing method is simple, the micro-assembly method is used, the manufacturing is completed through the additive packaging process, the photoetching process of the traditional micro-electro-mechanical system (MEMS) is avoided, the packaging is performed through the low-cost semiconductor packaging method, the dot matrix module can keep a large parallel interference surface, and meanwhile, the optical precision of high color purity and high reflectivity is achieved.
Preferably, before the first step, elastic braces are formed on four side surfaces of the movable lens: placing the movable lens on a clamp, bonding and routing four side surfaces of the movable lens in a wedge shape by using an ultrasonic wedge-shaped binding machine to form elastic braces, and temporarily suspending the other ends of the elastic braces; the second step is: the suspended end of the elastic brace is fixed on the semi-transparent reflective surface of the panel through dispensing, and the four side surfaces of the movable lens are connected with the semi-transparent reflective surface of the panel through the elastic brace. According to the technical scheme, the elastic brace is fixed on the movable lens, and then the movable lens is fixed on the semi-transparent light reflecting surface of the panel. In the technical scheme, the elastic bracing piece is a silicon-aluminum wire with the diameter of 32 mu m, and the length of the wire is determined by the balance of the electrostatic driving force and the spring restoring force in experiments. In order to improve the strength of the binding points, the binding points are reinforced by the binding spot glue. The suspended end of the elastic riblets may also be wedge bonded, preferably by adhesive bonding using a small drop of conductive glue. When the ends of the suspended elastic braces are affixed to the transflector using a small drop of glue, the suspended ends may be slightly biased toward the transflector during baking and shrinking. The glue drip automatically balances the pressure from the four resilient braces on the moving lens, making the four resilient braces more balanced. The initial pressure can be adjusted using a binder having sufficient viscosity and an appropriate amount.
Preferably, the step (ii) is: elastic rubber balls, elastic rubber beams or elastic rubber sheets which can stretch and contract are respectively formed between the four side surfaces of the movable lens and the semi-transparent reflective surface of the panel through glue dispensing, glue pulling or glue pressing, and the four side surfaces of the movable lens are connected with the semi-transparent reflective surface of the panel through the elastic rubber balls, the elastic rubber beams or the elastic rubber sheets. Elastic braces connected between the side surfaces of the movable lenses and the semi-transparent reflective surface of the panel are formed by dispensing, pulling or pressing glue, and elastic conductive glue, such as TPU, silica gel, rubber and the like, is adopted. The adhesive can be multi-combination mixed type, single combination type, normal temperature curing type, high temperature curing type, moisture curing type, UV curing type, hot melt type and the like. Dispensing, pulling or pressing provides an initial compressive stress between the two interference surfaces (the reflective surface of the movable lens and the semi-transparent reflective surface of the panel) so that the reflective surface of the movable lens is more attached to the semi-transparent reflective surface of the panel. Thus, the initial cavity depth formed by the two interference surfaces can be minimized, effectively increasing the ability of the pixel to display black and white.
Preferably, when dispensing is performed between the four side surfaces of the movable lens and the semi-transparent reflective surface of the panel, the micro glue drops dripped through the needle tube or the glue dripping nozzle are low-viscosity glue solution, the low-viscosity glue solution needs to be partially cured before reaching the bonding part from the glue dripping outlet so as to increase the viscosity, the bonding part quickly forms an elastic glue ball, the glue solution is prevented from being capillary-diffused and seeped between the reflective surface of the movable lens and the semi-transparent reflective surface of the panel, and the four side surfaces of the movable lens are connected with the semi-transparent reflective surface of the panel through the elastic glue ball. The elastic rubber ball in the technical scheme is the elastic brace.
Preferably, when glue is drawn between the four sides of the movable lens and the semi-transparent reflective surface of the panel, the glue drops slightly exposed out of the glue dispensing nozzle lightly touch the sides of the movable lens, then the movable lens is slightly drawn outwards, the glue dispensing nozzle is obliquely downwards moved along the sides of the movable lens to draw the glue to generate an elastic glue beam, the glue dispensing nozzle is downwards made to enable the glue drops to lightly touch the semi-transparent reflective surface of the panel, then the glue dispensing nozzle rapidly upwards leaves the semi-transparent reflective surface, the connection between the glue and the glue dispensing nozzle is broken, and the four sides of the movable lens are connected with the semi-transparent reflective surface of the panel through the elastic glue beam. The elastic rubber beam in the technical scheme is an elastic brace.
Preferably, when glue pressing is carried out between the four sides of the movable lens and the semi-transparent reflective surface of the panel, the pushing head with the elastic film is positioned to the pasting position between the sides of the movable lens and the semi-transparent reflective surface of the panel, the elastic film is L-shaped, one side of the elastic film is tightly pasted with the sides of the movable lens, the other side of the elastic film is tightly pasted with the semi-transparent reflective surface of the panel, then pressurization is carried out on the pushing head, the elastic film is pasted between the sides of the movable lens and the semi-transparent reflective surface of the panel through pressurization, finally the pushing head is taken away, and the four sides of the movable lens are connected with the semi-transparent reflective surface of the panel through the elastic film. The elastic film in the technical scheme is the elastic brace.
Preferably, the elastic braces are made of conductive adhesive materials or non-conductive adhesive materials; if the elastic braces are made of non-conductive adhesive materials, the movable lens connected with the elastic braces is integrally coated after the elastic braces are connected to the four side surfaces of the movable lens, namely a metal conductive film is coated on the back surface of the movable lens, the four side surfaces of the movable lens and the elastic braces; if the elastic brace is made of conductive adhesive, a layer of metal conductive film is plated on the back surface of the movable lens and the four side surfaces of the movable lens, and then the elastic brace is connected to the four side surfaces of the movable lens. If the elastic brace or the bonding material is made of non-conductive materials, the connection of the elastic brace needs to be completed, then the whole film coating is carried out, a metal film with the thickness of 5-30 nanometers is coated on the whole dimming layer through magnetron sputtering, and the conductive film on the back of the pixel and the film coating on the semi-transparent reflective surface of the panel are conducted through the metal film on the surface of the elastic brace.
Preferably, the step (i) is: preparing a positioning template, wherein the positioning template is provided with positioning bulges and glue dispensing holes, a plurality of spaces defined by the positioning bulges correspond to the placement positions of the movable lenses, the movable lenses are correspondingly placed into the spaces defined by the positioning bulges one by one, the reflective surfaces of the movable lenses face outwards to form a dot matrix structure of the movable lenses, one glue dispensing hole is arranged between every two adjacent movable lenses, the positioning template on which the movable lenses are placed is covered with a panel, and the semi-transparent reflective surface of the panel is pressed on the reflective surface of the movable lenses; the second step is: the glue dispensing nozzle or the thimble adhered with the glue film extends into the space between the side surface of the movable lens and the semi-transparent reflective surface of the panel from the glue dispensing hole of the positioning template, the glue dispensing nozzle or the thimble adhered with the glue film is adhered between the side surface of the movable lens and the semi-transparent reflective surface of the panel to form an elastic brace, the four side surfaces of the movable lens are connected with the semi-transparent reflective surface of the panel through the elastic brace, the glue dispensing nozzle or the thimble is withdrawn after the glue is solidified, and finally the positioning template is removed. The positioning protrusion can be a convex strip or a convex column or other structures. Taking the movable lens as a square, the convex strips or the convex columns surround to form a square. When the raised lines are adopted, the raised lines on each edge of the square have two sections, and a point glue hole is arranged on the positioning template between the two sections of the raised lines. When the convex columns are adopted, the convex columns can adopt a cross-shaped structure and are positioned at four corners of a square, and a point glue hole is formed in the positioning template between every two adjacent convex columns. The automatic control device is used for placing the plurality of movable lenses in a space surrounded by the positioning bulges on the positioning template in a one-to-one correspondence manner through taking and placing actions, and then the panel is covered, so that the positioning template, the plurality of movable lenses and the panel are integrated. The glue dispensing needle tube extends into the glue dispensing hole from the back surface of the positioning template, and glue drops extruded by the glue dispensing needle tube are adhered to the side surface of the movable lens and the semi-transparent reflective surface of the panel; or the thimble with the glue film extends into the glue hole from the back of the positioning template, the glue film on the thimble is positioned between the side surface of the movable lens and the semi-transparent reflecting surface of the panel, and the glue film is adhered to the side surface of the movable lens and the semi-transparent reflecting surface of the panel through pressurization and heating. According to the technical scheme, the installation, the positioning and the adhesion are more convenient and accurate.
Preferably, the manufacturing method of the reflective large-pixel color display dot matrix module comprises the following manufacturing methods of a movable lens and a support column: the method comprises the steps of firstly plating a reflective layer on one surface of a whole glass block for manufacturing a movable lens to form a reflective surface on the front surface of the movable lens, then cutting the whole glass block to form a plurality of movable lenses and a plurality of support columns, and plating conductive films on the back surface and the side surface of each movable lens to form an electrode on the back surface of each movable lens. The thickness of the whole glass block is 0.1 mm-0.7 mm, the reflecting layer is generally an aluminum film, the shape of the movable lens can be square, rectangle, hexagon, the shape required by the seven-segment digital display module or other shapes, and the size of the movable lens is generally 4 multiplied by 4 mm when the movable lens is square. The size of the support column is 0.2-0.6 mm, the support column can be triangular, square, hexagonal or circular, and the like, and the thickness of the support column is consistent with that of the movable lens by adopting a scribing cutting or wafer cutting method. The back surface and part or all of the side surfaces of the movable lens are plated with a conductive film, and the conductive film can be formed by plating chromium, aluminum, molybdenum or other suitable conductive materials.
Preferably, the manufacturing method of the reflective large-pixel color display dot matrix module comprises the following manufacturing methods of a panel and a back plate: cutting the whole glass block for manufacturing the panel and the back plate, and cutting out the panel and the back plate which are consistent with the size of the dot matrix module, wherein if the size of the panel can be 20 multiplied by 35 mm, the shape of the panel can be rectangular or hexagonal, and the like, a semi-transparent metal film is plated on one surface of the panel to form a semi-transparent reflective surface on the back surface of the panel, and a conductive film is plated on one surface of the back plate to form an electrode and a lead. The semi-permeable metal film forming the semi-permeable reflective surface of the panel can be formed by plating chromium, aluminum, molybdenum or other suitable metals. And forming an electrode pattern on the backboard and a conductive film of the lead, and realizing the formation by a Lift-off coating process or a photoresist mask etching mode.
The invention has the beneficial effects that: the manufacturing method is simple, a display dot matrix module, namely a standard analog large pixel, is manufactured by a micro-assembly method, and outdoor color display is realized through accurate electrostatic driving. The low-resolution pixel array is manufactured through a low-price additive packaging process, and prepared parts are assembled together to form an integral and integrated structure, so that the traditional MEMS photoetching process is avoided, the packaging is performed through a low-cost semiconductor packaging method, a dot matrix module can keep a large parallel interference surface, and meanwhile, the pixel array has the optical accuracy of high color purity and high reflectivity, is good in visibility under strong light, reduces eye fatigue, and achieves the purposes of high brightness, low power consumption and low manufacturing cost. The large-pixel reflective color display is formed by arranging and assembling the reflective large-pixel color display dot matrix modules, is an ideal display of the billboard, and fills the blank that the billboard is manufactured by fixing a printed picture and an LED display array at present. Compared with an LED array, the reflective color display can present vivid pictures and simultaneously consumes extremely low power consumption. The low power consumption characteristic of the reflective large color pixel array also opens the performance of the wireless display with power supplied by the solar cell panel and refreshed by the low power consumption wireless sensor network.
Drawings
Fig. 1 is a schematic side view of an exploded structure of a reflective large pixel color display dot matrix module according to the present invention.
Fig. 2 is a schematic view of a partial rear view structure of the reflective large pixel color display dot matrix module of the present invention with the back plate removed.
Fig. 3 is a schematic view of a partial structure of the dispensing between the side surface of the movable lens and the transflective surface of the panel according to the present invention.
Fig. 4 is a schematic view of a partial structure of the present invention applied between the side of the moving lens and the transflective surface of the panel.
Fig. 5 is a schematic view of a partial structure of the present invention for pulling glue between the side surface of the moving lens and the transflective surface of the panel.
Fig. 6 is a partial front view of a locating template used in the present invention.
In the figure, 1, a panel, 2, a movable lens, 3, a back plate, 4, supporting columns, 5, elastic pull strips, 6, elastic rubber balls, 7, elastic rubber sheets, 8, a pushing head, 9, a glue dispensing nozzle, 10, elastic rubber beams, 11, a positioning template, 12, convex strips and 13 glue dispensing holes are arranged.
Detailed Description
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.
Example 1: in the method for manufacturing the reflective large-pixel color display dot matrix module of the embodiment, a panel 1, a back plate 3, a plurality of movable lenses 2 and a plurality of support pillars 4 are prepared, as shown in fig. 1, the sizes of the panel 1 and the back plate 3 are consistent with the size of the dot matrix module, one surface of the panel 1 is a semi-transparent reflective surface, in the embodiment, the movable lenses are square, one surface of each movable lens 2 is a reflective surface, the other surface and four side surfaces of each movable lens are provided with conductive films, and one surface of the back plate 3 is provided with an electrode.
The manufacturing method of the movable lens 2 and the support column 4 comprises the following steps: the method comprises the steps of firstly plating a reflective layer on one surface of a whole glass block for manufacturing a movable lens to form a reflective surface on the front surface of the movable lens, then cutting the whole glass block by a wafer cutting method to obtain a plurality of movable lenses and a plurality of support columns, and plating conductive films on the back surface and four side surfaces of each movable lens to form an electrode on the back surface of each movable lens. The thickness of the whole glass block is 0.5 mm, the reflective layer is an aluminum film, and the shape of the movable lens in the embodiment is a square, and the size of the movable lens is 4 multiplied by 4 mm. The size of the support column is 0.5 mm, the shape of the support column is circular, and the thickness of the support column is consistent with that of the movable lens. And plating conductive films on the back surface and four side surfaces of the movable lens.
The manufacturing method of the panel 1 and the back plate 3 comprises the following steps: cutting a whole glass block for manufacturing a panel and a back plate, cutting out the panel and the back plate which are consistent with the size of the dot matrix module, wherein the panel is rectangular, the size of the panel is 20 multiplied by 35 millimeters, a semi-transparent metal film is plated on one surface of the panel to form a semi-transparent reflective surface on the back surface of the panel, and a conductive film is plated on one surface of the back plate to form an electrode and a lead. The semitransparent metal film forming the semitransparent reflective surface of the panel is a chromium film, and an electrode pattern on the back plate and a conductive film of a lead are formed through a Lift-off coating process or a photoresist mask etching mode.
The panel, the back plate and the movable lens need to be cleaned before installation, and conductive adhesive or non-conductive adhesive with proper viscosity needs to be prepared.
Then installing a reflective large pixel color display dot matrix module, wherein the manufacturing method of the reflective large pixel color display dot matrix module comprises the following steps:
arranging a plurality of movable lenses 2 into a lattice structure to be placed on a semi-transparent reflective surface of a panel 1, wherein the reflective surface of each movable lens is tightly attached to the semi-transparent reflective surface of the panel;
as shown in fig. 3, when dispensing is performed between the four sides of the movable lens and the semi-transparent reflective surface of the panel, the stretchable and contractible elastic rubber ball 6 is formed between the four sides of the movable lens 2 and the semi-transparent reflective surface of the panel 1 by dispensing, the tiny rubber drops dripped by the needle tube or the rubber dripping nozzle are low-viscosity rubber liquid, the low-viscosity rubber liquid needs to be partially cured before reaching the bonding part from the dripping outlet to increase the viscosity, so that the bonding part quickly forms the elastic rubber ball, the rubber liquid is prevented from capillary diffusion and infiltration between the reflective surface of the movable lens and the semi-transparent reflective surface of the panel, and the four sides of the movable lens are connected with the semi-transparent reflective surface of the panel through the elastic rubber ball;
as shown in fig. 5, when glue is pulled between the four sides of the movable lens and the semi-transparent reflective surface of the panel, the glue drop slightly exposed out of the glue dispensing nozzle 9 slightly touches the side of the movable lens 2, then the movable lens is pulled outwards slightly, the glue dispensing nozzle is moved downwards along the side of the movable lens in an inclined manner, an elastic glue beam 10 is generated by pulling the glue, the glue dispensing nozzle is moved downwards to make the glue drop touch the semi-transparent reflective surface of the panel 1, then the glue dispensing nozzle is moved upwards quickly to leave the semi-transparent reflective surface, the connection between the glue dispensing nozzle and the glue dispensing nozzle is broken, and the four sides of the movable lens are connected with the semi-transparent reflective surface of the panel through the elastic glue beam;
as shown in fig. 4, when glue pressing is performed between the four sides of the movable lens and the semi-transparent reflective surface of the panel, the pushing head 8 with the elastic film 7 attached thereto is positioned at the pasting position between the side of the movable lens 2 and the semi-transparent reflective surface of the panel 1, the elastic film 7 is L-shaped, one side of the elastic film is tightly pasted with the side of the movable lens, the other side of the elastic film is tightly pasted with the semi-transparent reflective surface of the panel, then pressure is performed on the pushing head, the elastic film is pasted between the side of the movable lens and the semi-transparent reflective surface of the panel by pressure, finally the pushing head is taken away, and the four sides of the movable lens are connected with the semi-transparent reflective surface of the panel through the elastic;
thirdly, a plurality of supporting columns are adhered to the semi-transparent reflecting surface of the panel, the supporting columns are arranged in a dot matrix, and one supporting column is arranged at the periphery of each of the four corners of each movable lens;
covering the back plate, wherein the surface of the back plate with the electrodes faces to the conductive film of the movable lens, clamping the movable lens arranged into a lattice structure between the panel and the back plate, and bonding the back plate with the support columns.
Example 2: the method for manufacturing a reflective large-pixel color display dot matrix module in this embodiment, as shown in fig. 2, includes the following steps:
firstly, manufacturing elastic braces 5 on four side surfaces of a movable lens 2: placing the movable lens on a clamp, bonding and routing four side surfaces of the movable lens in a wedge shape by using an ultrasonic wedge-shaped binding machine to form elastic braces, and temporarily suspending the other ends of the elastic braces;
arranging a plurality of movable lenses 2 into a lattice structure to be placed on a semi-transparent reflective surface of a panel 1, wherein the reflective surface of each movable lens is tightly attached to the semi-transparent reflective surface of the panel;
and thirdly, fixing the suspended end of the elastic brace 5 on the semi-transparent reflective surface of the panel 1 through glue dispensing, and connecting the four side surfaces of the movable lens 2 with the semi-transparent reflective surface of the panel 1 through the elastic brace.
Adhering a plurality of support columns 4 on the semi-transparent reflective surface of the panel, wherein the support columns are arranged in a dot matrix, and one support column is arranged at the periphery of each of the four corners of each movable lens;
covering the back plate 3, wherein the surface of the back plate with the electrode faces to the conductive film of the movable lens, clamping the movable lens arranged into a lattice structure between the panel and the back plate, and bonding the back plate with the support columns.
The rest of the procedure was the same as in example 1.
Example 3: the manufacturing method of the reflective large-pixel color display dot matrix module of the embodiment comprises the following steps:
preparing a positioning template, as shown in fig. 6, wherein a convex strip 12 and a dispensing hole 13 are arranged on a positioning template 11, a plurality of spaces surrounded by the convex strips 12 correspond to the placement positions of the movable lenses 2, two sections of convex strips 12 are arranged on each side of the space, a dispensing hole 13 is arranged on the positioning template between the two sections of convex strips, the plurality of movable lenses are correspondingly placed in the spaces surrounded by the positioning bulges one by one, the reflective surfaces of the movable lenses face outward to form a lattice structure of the movable lenses, one dispensing hole 13 is arranged between two adjacent movable lenses, a panel is covered on the positioning template on which the movable lenses are placed, and the semi-transparent reflective surface of the panel is pressed on the reflective surface of the movable lenses;
secondly, a dispensing nozzle or an ejector pin adhered with an adhesive film penetrates through a dispensing hole from the back surface of the positioning template and extends into a position between the side surface of the movable lens and the semi-transparent reflective surface of the panel, the adhesive point or the adhesive film is adhered between the side surface of the movable lens and the semi-transparent reflective surface of the panel to form an elastic brace, the four side surfaces of the movable lens are connected with the semi-transparent reflective surface of the panel through the elastic brace, the dispensing nozzle or the ejector pin is removed after the adhesive is solidified, and finally the positioning template is removed;
thirdly, a plurality of supporting columns are adhered to the semi-transparent reflecting surface of the panel, the supporting columns are arranged in a dot matrix, and one supporting column is arranged at the periphery of each of the four corners of each movable lens;
covering the back plate, wherein the surface of the back plate with the electrodes faces to the conductive film of the movable lens, clamping the movable lens arranged into a lattice structure between the panel and the back plate, and bonding the back plate with the support columns.
The rest of the procedure was the same as in example 1.
The elastic braces can be made of conductive adhesive materials or non-conductive adhesive materials. If the elastic braces are made of non-conductive adhesive materials, the movable lens connected with the elastic braces is integrally coated after the elastic braces are connected to the four side surfaces of the movable lens, namely a metal conductive film is coated on the back surface of the movable lens, the four side surfaces of the movable lens and the elastic braces; if the elastic brace is made of conductive adhesive, a layer of metal conductive film is plated on the back surface of the movable lens and the four side surfaces of the movable lens, and then the elastic brace is connected to the four side surfaces of the movable lens.
The manufactured reflective large-pixel color display dot matrix module comprises a plurality of movable lenses 2, a plurality of support columns 4, a panel 1 and a back plate 3, as shown in fig. 1 and 2, the sizes of the panel 1 and the back plate 3 are consistent with the size of the dot matrix module, and when a person is positioned in front of the display surface of the dot matrix module, the panel 1, the plurality of movable lenses 2 arranged in a dot matrix manner and the back plate 3 are sequentially arranged from front to back. The panel 1 includes transparent panel and plates the metal level of producing light interference at the transparent panel back, this metal level constitutes half transmitting reflection of light face, the one side of moving lens 2 is reflection of light face, there is the conductive film another side and four sides of moving lens 2, a plurality of moving lenses are located the panel back, arrange according to the dot matrix, and the reflection of light face of moving lens and the half transmitting reflection of light face contact of panel, four sides of moving lens link to each other through the half transmitting reflection of light face of elastic brace 5 and panel, the elastic brace has electric conductivity, the side through moving the lens switches on with the back of moving the lens. The outside at four angles of every removal lens all has a support column 4, and the front end of support column 4 and the semi-transparent reflective surface of panel 1 bond, and the rear end and the 3 bonding of backplate of support column 4, 3 one sides of moving the mirror surface of backplate towards are equipped with the electrode. The signal formed by the display driving system is applied to the electrode of the back plate through a circuit connecting line, the electrode applies electrostatic force to the movable lens, the movable lens can move in submicron level in the vertical direction of the movable lens under the control of the pulling force generated by the elastic riblets and the pulling force generated by the electrostatic force of the back plate, and the movable lens is parallelly pulled close to or pulled away from the back plate, so that the distance between the semi-transparent reflecting surface of the panel and the reflecting surface of the movable lens is changed, namely the distance between two interference surfaces is changed, and the color change of the pixel corresponding to each movable lens is realized.
The manufactured reflective large-pixel color display dot matrix modules can form a large-size display screen in a splicing mode, and the driving circuits can be distributed on the back or beside the display screen. The plurality of reflective large-pixel color display dot matrix modules are spliced according to the distribution of the dot matrix to manufacture the low-resolution RCD screen for outdoor advertising boards or industrial or civil use.
The target market for reflective color display dot matrix modules is in industrial display, outdoor billboard and human-machine interface (HMI) applications. One application is an outdoor wireless information board, information can be wirelessly transmitted to a small-sized system by combining a solar panel, a small-sized storage battery power supply system and communication of a wireless network or an internet of things through a large screen combined by the display dot matrix module, and the information is issued to a user through the large screen. The traditional LED screen has large power consumption, cannot provide required electric energy through solar energy, and must provide energy through commercial power. Therefore, the low-energy RCD display screen manufactured by the method has irreplaceable advantages in application.
Claims (8)
1. The utility model provides a colored display dot matrix module manufacturing approach of reflective large pixel, a serial communication port, the colored display dot matrix module of reflective large pixel includes the panel, backplate and a plurality of removal lens, a plurality of support column, the size of panel and backplate is unanimous with the size of dot matrix template, the one side of panel is the translucent reflector, the one side of removal lens is the reflection of light face, the another side and the side of removal lens have the conducting film, the one side of backplate has a plurality of electrodes, the colored display dot matrix module manufacturing approach of reflective large pixel includes the following step:
arranging a plurality of movable lenses into a lattice structure to be placed on a semi-transparent reflective surface of a panel, wherein the reflective surface of each movable lens is tightly attached to the semi-transparent reflective surface of the panel;
forming stretchable and contractible elastic rubber balls between part of or all of the side surfaces of the movable lens and the semi-transparent reflective surface of the panel through glue dispensing, wherein part of or all of the side surfaces of the movable lens are connected with the semi-transparent reflective surface of the panel through elastic braces formed by the elastic rubber balls;
when glue is dispensed between the side surface of the movable lens and the semi-transparent reflective surface of the panel, tiny glue drops which are dripped through a needle tube or a glue dripping nozzle are glue solution with low viscosity, the glue solution with low viscosity needs to be partially cured before reaching the bonding part from a dripping outlet so as to increase the viscosity, so that the bonding part quickly forms an elastic glue ball, the glue solution is prevented from being capillary-diffused and seeped between the reflective surface of the movable lens and the semi-transparent reflective surface of the panel, and the side surface of the movable lens is connected with the semi-transparent reflective surface of the panel through the elastic glue ball;
thirdly, a plurality of support columns are adhered to the semi-transparent reflective surface of the panel, the support columns are arranged in a dot matrix, and a plurality of support columns are arranged on the periphery of each movable lens;
covering a back plate on the back surface of the movable lens, wherein the surface of the back plate provided with the electrode faces the back surface of the movable lens, and the back plate is adhered to the support pillar.
2. The method of claim 1, wherein the elastic braces are made of conductive adhesive or non-conductive adhesive; if the elastic brace is made of non-conductive adhesive, the movable lens connected with the elastic brace is integrally coated after the elastic brace is connected to the side surface of the movable lens, namely a metal conductive film is coated on the back surface of the movable lens, the side surface of the movable lens and the elastic brace; if the elastic brace is made of conductive adhesive, a layer of metal conductive film is plated on the back surface of the movable lens and the side surface of the movable lens, and then the side surface of the movable lens plated with the metal conductive film is connected with the elastic brace.
3. The method of claim 1, comprising moving the lens and the support posts: the method comprises the steps of firstly plating a reflective layer on one surface of a whole glass block for manufacturing a movable lens to form a reflective surface on the front surface of the movable lens, then cutting the whole glass block to form a plurality of movable lenses and a plurality of support columns, and plating conductive films on the back surface and the side surface of each movable lens to form an electrode on the back surface of each movable lens.
4. A method of fabricating a matrix module for a reflective large pixel color display according to claim 1 or 3, comprising the steps of: cutting the whole glass block for manufacturing the panel and the back plate, cutting out the panel and the back plate with the size consistent with that of the dot matrix module, plating a semi-transparent metal film on one surface of the panel to form a semi-transparent light reflecting surface on the back surface of the panel, and plating a conductive film on one surface of the back plate to form an electrode and a lead.
5. The utility model provides a colored display dot matrix module manufacturing approach of reflective large pixel, a serial communication port, the colored display dot matrix module of reflective large pixel includes the panel, backplate and a plurality of removal lens, a plurality of support column, the size of panel and backplate is unanimous with the size of dot matrix template, the one side of panel is the translucent reflector, the one side of removal lens is the reflection of light face, the another side and the side of removal lens have the conducting film, the one side of backplate has a plurality of electrodes, the colored display dot matrix module manufacturing approach of reflective large pixel includes the following step:
preparing a positioning template, wherein positioning bulges and glue dispensing holes are formed in the positioning template, a plurality of spaces defined by the positioning bulges correspond to the placement positions of the movable lenses, the plurality of movable lenses are placed in the spaces defined by the positioning bulges in a one-to-one correspondence mode, the light reflecting surfaces of the movable lenses face outwards to form a dot matrix structure of the movable lenses, one glue dispensing hole is formed between every two adjacent movable lenses, a panel is covered on the positioning template on which the movable lenses are placed, and the semi-transparent light reflecting surface of the panel is pressed on the light reflecting surfaces of the movable lenses;
secondly, a dispensing nozzle or an ejector pin adhered with an adhesive film extends into a position between the side surface of the movable lens and the semi-transparent reflective surface of the panel from a dispensing hole of the positioning template, the adhesive point or the adhesive film is adhered between the side surface of the movable lens and the semi-transparent reflective surface of the panel to form an elastic brace, the side surface of the movable lens is connected with the semi-transparent reflective surface of the panel through the elastic brace, the dispensing nozzle or the ejector pin is removed after the adhesive is solidified by gelation, and finally the positioning template is removed;
thirdly, a plurality of support columns are adhered to the semi-transparent reflective surface of the panel, the support columns are arranged in a dot matrix, and a plurality of support columns are arranged on the periphery of each movable lens;
covering a back plate on the back surface of the movable lens, wherein the surface of the back plate provided with the electrode faces the back surface of the movable lens, and the back plate is adhered to the support pillar.
6. The utility model provides a colored display dot matrix module manufacturing approach of reflective large pixel, a serial communication port, the colored display dot matrix module of reflective large pixel includes the panel, backplate and a plurality of removal lens, a plurality of support column, the size of panel and backplate is unanimous with the size of dot matrix template, the one side of panel is the translucent reflector, the one side of removal lens is the reflection of light face, the another side and the side of removal lens have the conducting film, the one side of backplate has a plurality of electrodes, the colored display dot matrix module manufacturing approach of reflective large pixel includes the following step:
arranging a plurality of movable lenses into a lattice structure to be placed on a semi-transparent reflective surface of a panel, wherein the reflective surface of each movable lens is tightly attached to the semi-transparent reflective surface of the panel;
forming a stretchable and contractible elastic adhesive beam between part of or all of the side surfaces of the movable lens and the semi-transparent reflective surface of the panel by pulling adhesive, wherein part of or all of the side surfaces of the movable lens are connected with the semi-transparent reflective surface of the panel by elastic braces formed by the elastic adhesive beam;
when glue is pulled between the side surface of the movable lens and the semi-transparent reflective surface of the panel, glue drops slightly exposed out of the glue dispensing nozzle slightly touch the side surface of the movable lens, the movable lens is slightly pulled outwards, the glue dispensing nozzle is obliquely downwards moved along the side surface of the movable lens, the glue is pulled to generate an elastic glue beam, the glue dispensing nozzle is downwards made to enable the glue drops to slightly touch the semi-transparent reflective surface of the panel, the glue dispensing nozzle rapidly upwards leaves the semi-transparent reflective surface, the glue is pulled off to be connected with the glue dispensing nozzle, and the side surface of the movable lens is connected with the semi-transparent reflective surface of the panel through the elastic glue beam;
thirdly, a plurality of support columns are adhered to the semi-transparent reflective surface of the panel, the support columns are arranged in a dot matrix, and a plurality of support columns are arranged on the periphery of each movable lens;
covering a back plate on the back surface of the movable lens, wherein the surface of the back plate provided with the electrode faces the back surface of the movable lens, and the back plate is adhered to the support pillar.
7. The utility model provides a colored display dot matrix module manufacturing approach of reflective large pixel, a serial communication port, the colored display dot matrix module of reflective large pixel includes the panel, backplate and a plurality of removal lens, a plurality of support column, the size of panel and backplate is unanimous with the size of dot matrix template, the one side of panel is the translucent reflector, the one side of removal lens is the reflection of light face, the another side and the side of removal lens have the conducting film, the one side of backplate has a plurality of electrodes, the colored display dot matrix module manufacturing approach of reflective large pixel includes the following step:
arranging a plurality of movable lenses into a lattice structure to be placed on a semi-transparent reflective surface of a panel, wherein the reflective surface of each movable lens is tightly attached to the semi-transparent reflective surface of the panel;
respectively forming stretchable and contractible elastic films between part or all of the side surfaces of the movable lens and the semi-transparent reflective surface of the panel through glue pressing, wherein part or all of the side surfaces of the movable lens are connected with the semi-transparent reflective surface of the panel through elastic braces formed by the elastic films;
when glue pressing is carried out between the side face of the movable lens and the semi-transparent light-reflecting surface of the panel, the pushing head with the elastic film is positioned to the pasting position between the side face of the movable lens and the semi-transparent light-reflecting surface of the panel, the elastic film is L-shaped, one side of the elastic film is clung to the side face of the movable lens, the other side of the elastic film is clung to the semi-transparent light-reflecting surface of the panel, then pressurization is carried out on the pushing head, the elastic film is pasted between the side face of the movable lens and the semi-transparent light-reflecting surface of the panel through pressurization, finally the pushing head is taken away, and the side face of the movable lens is connected with the;
thirdly, a plurality of support columns are adhered to the semi-transparent reflective surface of the panel, the support columns are arranged in a dot matrix, and a plurality of support columns are arranged on the periphery of each movable lens;
covering a back plate on the back surface of the movable lens, wherein the surface of the back plate provided with the electrode faces the back surface of the movable lens, and the back plate is adhered to the support pillar.
8. The utility model provides a colored display dot matrix module manufacturing approach of reflective large pixel, a serial communication port, the colored display dot matrix module of reflective large pixel includes the panel, backplate and a plurality of removal lens, a plurality of support column, the size of panel and backplate is unanimous with the size of dot matrix template, the one side of panel is the translucent reflector, the one side of removal lens is the reflection of light face, the another side and the side of removal lens have the conducting film, the one side of backplate has a plurality of electrodes, the colored display dot matrix module manufacturing approach of reflective large pixel includes the following step:
firstly, manufacturing an elastic brace on the side surface of a movable lens: placing the movable lens on a clamp, bonding and routing the side surface of the movable lens in a wedge shape by using an ultrasonic wedge-shaped binding machine to form an elastic brace, and temporarily suspending the other end of the elastic brace;
arranging a plurality of movable lenses into a lattice structure to be placed on the semi-transparent reflective surface of the panel, wherein the reflective surface of each movable lens is tightly attached to the semi-transparent reflective surface of the panel;
fixing one suspended end of the elastic brace on the semi-transparent reflective surface of the panel through glue dispensing, and connecting the side surface of the movable lens with the semi-transparent reflective surface of the panel through the elastic brace;
adhering a plurality of support columns on the semi-transparent reflective surface of the panel, wherein the support columns are arranged in a dot matrix, and the periphery of each of the four corners of each movable lens is provided with one support column;
covering the back plate, wherein the surface of the back plate with the electrodes faces to the conductive film of the movable lens, clamping the movable lens arranged into a lattice structure between the panel and the back plate, and bonding the back plate with the support columns.
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| CN201710290328.5A CN107121867B (en) | 2017-04-27 | 2017-04-27 | Method for manufacturing reflective large-pixel color display dot matrix module |
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| CN201710290328.5A CN107121867B (en) | 2017-04-27 | 2017-04-27 | Method for manufacturing reflective large-pixel color display dot matrix module |
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| CN101089673A (en) * | 2004-03-29 | 2007-12-19 | 高通Mems科技公司 | Light interference reflection structure and its manufacturing method |
| CN101495900A (en) * | 2006-06-01 | 2009-07-29 | Idc公司 | Analog interferometric modulator device with electrostatic actuation and release |
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Effective date of registration: 20230228 Address after: 411100 No.16 Wenchang Road, Xiangxiang Economic Development Zone, Xiangtan City, Hunan Province Patentee after: Hunan Weitai Technology Co.,Ltd. Address before: 310052 rooms 1611 and 1612, building 2, 567 Jiangling Road, Xixing street, Binjiang District, Hangzhou City, Zhejiang Province Patentee before: HANGZHOU YUANSE TECHNOLOGY CO. |