CN110286497B - Preparation method of planar embedded LED-3D module - Google Patents

Abstract

The invention discloses a preparation method of a planar embedded LED-3D module, belongs to the technical field of three-dimensional display, and aims to solve the problems of the existing LED-3D module preparation process. The method comprises the following steps: step one, carving a concave die; step two, the manufacturing step of the 3D movable film: filling ultraviolet curing type optical glue in the female die, and then bonding the 3D polarizing film on the female die by using the filled glue; forming a lamp bead filling part after the glue is cured, and peeling the lamp bead filling part from the concave die along with the 3D polarizing film to construct a 3D movable film; step three, alignment step: aligning and attaching the 3D movable film and the LED module, so that the lamp bead filling part is scattered and filled into the gap of the lamp beads; step four, a cutting step: and cutting the redundant part of the 3D movable film to prepare the LED-3D module.

Description

Preparation method of planar embedded LED-3D module

Technical Field

The invention belongs to the technical field of stereoscopic display, and relates to a process method for preparing an LED-3D module by using an LED module and a 3D polarizing film.

Background

The polarized stereo display is a 3D display method which utilizes the principle that light has 'vibration direction' to realize the decomposition of original image and stereo imaging, and is characterized by that it utilizes the adjacent rows, columns and interlaces of the display device to partially set left-handed and right-handed polarized films so as to transfer two pictures with different polarization directions to viewer, and when the pictures are passed through the polarized glasses, every lens of the polarized glasses can only receive the picture with one polarization direction, so that the left and right eyes of the viewer can receive two groups of pictures, and then the two groups of pictures can be passed through the brain to synthesize stereo image.

At present, a common first preparation process of the LED-3D module is as follows: firstly, the LED module is sealed and leveled, the glue used for sealing and leveling is generally that A glue and B glue are mixed according to a certain proportion and then sealed and leveled or Si glue is used for sealing and leveling alone, the sealing and leveling is to completely cover the lamp beads exposed on the surface of the LED module, and the LED-3D module is prepared by laminating the lamp beads with a 3D polaroid after being sealed and leveled.

A common second fabrication process for LED-3D modules is: the plastic face cover is adopted to seal the lamp beads of the LED module, the inner surface of the adopted plastic face cover is provided with a plurality of bulges, the bulges are dispersedly inserted in gaps among the lamp beads, so that mutual interference of light and light is avoided, the plastic face cover generally adopts diffuse reflection design to make contribution to avoiding light interference, the surface of the plastic face cover is very smooth due to the design concept, the prepared LED module is not adhered to a 3D polarizing film, the prepared LED-3D module cannot be taken out together in a follow-up mode once the LED-3D module is in alignment fit under the condition, and the later maintenance of the lamp beads is difficult to complete; in addition, the problems of contrast and chromatic aberration of the LED display screen are solved through the plastic face shield, the plastic face shield is easy to warp and influence appearance, the production difficulty is high, the yield is low, and the cost is high.

Disclosure of Invention

The invention aims to solve the problems of the existing LED-3D module preparation process and provides a preparation method of a planar embedded LED-3D module.

The invention relates to a preparation method of a planar embedded LED-3D module, which comprises the following steps:

step one, carving a concave die;

step two, the manufacturing step of the 3D movable film: filling ultraviolet curing type optical glue in the female die, and then bonding the 3D polarizing film on the female die by using the filled glue; forming a lamp bead filling part after the glue is cured, and peeling the lamp bead filling part from the concave die along with the 3D polarizing film to construct a 3D movable film;

step three, alignment step: aligning and attaching the 3D movable film and the LED module, so that the lamp bead filling part is scattered and filled into the gap of the lamp beads;

step four, a cutting step: and cutting the redundant part of the 3D movable film to prepare the LED-3D module.

Preferably, the lamp bead filling part is a periodic protruding structure which is continuously arranged in an interlaced mode, a spaced mode, a row-column staggered matrix or a local pattern, the height of the lamp bead filling part is the same as the height of a lamp bead of the LED module, and a plurality of gaps formed by the periodic protruding structure of the lamp bead filling part are used for accommodating the lamp bead in the LED module.

Preferably, the minor axis direction cross section of the single periodic convex structure in the lamp bead filling part is rectangular, isosceles trapezoid, isosceles triangle or arc.

Preferably, the width d of the single periodic convex structure in the bead filling part satisfies the relationship:

(P-2R)/2≤d＜P-2R

in the formula: p is the center pitch of two adjacent pixels, and R is the radius of the lamp bead.

Preferably, the area of the 3D polarizing film bonded in the second step is larger than the area of the glue filling area, the 3D polarizing film inherits the docking point on the concave mold as the docking point of the 3D movable film, and the docking point of the 3D movable film is matched with the docking point of the LED module.

Preferably, in the step one, a concave die is engraved on the copper plating roller or flat plate by using an arc knife, and the flatness of the engraved surface meets the relational expression

f represents the feed per revolution; r represents the radius of the arc nose.

Preferably, in the third step, the ultraviolet curing type optical glue is cured by adopting a UV exposure ultraviolet curing mode, and the hardness of the ultraviolet curing type optical glue is less than or equal to 75A.

Preferably, when the female die is engraved on the copper-plated roller, the alignment points on the female die are pressed

The relation with the alignment points on the LED module satisfies the following conditions:

in the formula: a is the circumferential distance of two alignment points along the circumferential direction on the concave die, H is the distance of two alignment points on the LED module, B is the circumferential division value of the engraving equipment, and D is the diameter of the copper-plated roller.

The invention has the beneficial effects that:

(1) compared with the prior art, the process saves the procedures of sealing, curing, stripping and the like, has simple process flow, greatly improves the efficiency and reduces the use cost of materials;

(2) the module lamp beads can be repaired;

(3) when the 3D polarizing film is repaired and peeled off, the 3D polarizing film and the lamp bead filling part cannot be separated, and the 3D polarizing film can be repeatedly used;

(4) the traditional plastic mask is easy to deform, and the problems of high production difficulty, low yield and high cost of the plastic mask are solved;

(5) this scheme adopts embedded planar 3D can move the counterpoint point of membrane and the metal counterpoint point of LED module to counterpoint the pressfitting, and the counterpoint precision is high, and the volume production is efficient.

Drawings

FIG. 1 is a schematic of the present invention for preparing 3D transferable films;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

FIG. 3 is a cross-sectional view of another embodiment A-A of FIG. 1;

FIG. 4 is a schematic perspective view of FIG. 1;

FIG. 5 is a schematic diagram of the present invention for making an LED-3D module, in which the LED module only shows a lamp bead;

FIG. 6 is an enlarged partial view of FIG. 5;

FIG. 7 is a cross-row embodiment of a 3D shifting film;

FIG. 8 is a cross-sectional embodiment of a 3D shift film;

fig. 9 is a partial pattern continuous arrangement example of the 3D shift film.

In the figure: 1 is a lamp bead filling part, 2 is a 3D polarizing film, 3 is an alignment point, and 4 is a lamp bead

Detailed Description

The following detailed description of the embodiments of the present invention will be provided with reference to the drawings and examples, so that how to apply the technical means to solve the technical problems and achieve the technical effects can be fully understood and implemented. It should be noted that, as long as there is no conflict, the embodiments and the features of the embodiments of the present invention may be combined with each other, and the technical solutions formed are within the scope of the present invention.

This embodiment will fill, seal the part in each lamp pearl clearance of LED module and 3D polaroid preparation and form into 3D migration membrane together, then counterpoint the laminating with 3D migration membrane and LED module, and the LED-3D module that so prepares can conveniently carry out single pearl when the lamp pearl goes wrong and reprocess the operation, only needs to part 3D migration membrane and LED module two parts and can expose the lamp pearl.

The first embodiment: referring to fig. 1 to 6, the bead filling portion 1 is a matrix with staggered rows and columns.

A concave die corresponding to a pattern of a lamp bead filling part 1 shown in the figure 1 is carved on a copper plating roller by utilizing a carving process, ultraviolet curing type optical glue is injected into a groove of the concave die, then a 3D polarizing film 2 is adhered to the concave die by utilizing the adhesive property of uncured glue, the area of the 3D polarizing film 2 is larger than a glue injection area, the 3D polarizing film 2 inherits a contraposition point arranged on the concave die, namely the contraposition point arranged on the concave die is transited to the 3D polarizing film 2, the contraposition point arranged on the concave die is matched with the contraposition point arranged on an LED module, and the contraposition point can be arranged outside the carving area shown in the figure 1 or inside the carving area but is not overlapped with the groove.

Utilize the glue solidification of UV curing process with the injection into, glue solidification in the recess forms lamp pearl filling 1, the process steps of 3D migration membrane is prepared with bonding of 3D polarizing film 2 to lamp pearl filling 1 has also been accomplished simultaneously, can move the membrane with 3D at last and peel off with the die utensil, 3D migration membrane is as an integral part and is counterpointed the laminating with the LED module, lamp pearl 4 is held in every clearance in lamp pearl filling 1, counterpoint the laminating back, lamp pearl 4 clearance is occupy-place by lamp pearl filling 1 and is filled, the height of lamp pearl 4 equals with the height of lamp pearl filling 1, equivalent to sealing flat processing technology so. The lamp beads of the LED module are mostly distributed in an array mode, a plurality of protruding portions of the lamp bead filling portion 1 correspond to the gap positions of the protruding portions, and for better adapting to the space shape of the gaps of the lamp beads, the cross section of the single-period protruding structure of the lamp bead filling portion 1 can be isosceles trapezoid (shown in fig. 2), isosceles triangle or arc-shaped except a conventional rectangle (shown in fig. 3).

After alignment and attachment, cutting the redundant part of the 3D offset film, and after cutting, as shown in fig. 5, referring to fig. 6, the relationship between the size of the lamp bead 4 and the width of the single periodic convex structure.

Second embodiment: referring to fig. 7, the lamp bead filling part 1 is of an interlaced structure, i.e., lamp beads are filled in an interlaced manner.

Third embodiment: referring to fig. 8, the lamp bead filling part 1 is of a spaced-column structure, that is, the lamp beads are filled in spaced-column.

Fourth embodiment: referring to fig. 9, the periodic protruding structure of the lamp bead filling part 1 is a self-defined local structure, the local structure of the embodiment is a right-angle structure, and the lamp bead positions are reserved by continuous arrangement in different directions, and are spaced and filled.

Although the embodiments of the present invention have been described above, the above descriptions are only for the convenience of understanding the present invention, and are not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (8)

1. The preparation method of the planar embedded LED-3D module is characterized by comprising the following steps:

step one, carving a concave die;

step two, the manufacturing step of the 3D movable film: filling ultraviolet curing type optical glue in the female die, and then bonding the 3D polarizing film on the female die by using the filled glue; forming a lamp bead filling part after the glue is cured, and peeling the lamp bead filling part from the concave die along with the 3D polarizing film to construct a 3D movable film;

step three, alignment step: aligning and attaching the 3D movable film and the LED module, so that the lamp bead filling part is scattered and filled into the gap of the lamp beads;

step four, a cutting step: and cutting the redundant part of the 3D movable film to prepare the LED-3D module.

2. The method for manufacturing a planar embedded LED-3D module according to claim 1, wherein the bead filler is a periodic raised structure continuously arranged in an interlaced manner, a spaced manner, a matrix with staggered rows and columns, or a partial pattern, the height of the bead filler is the same as that of the beads of the LED module, and a plurality of gaps formed by the periodic raised structure of the bead filler are used for accommodating the beads in the LED module.

3. The method for manufacturing the planar embedded LED-3D module according to claim 2, wherein the cross section of the minor axis direction of the single periodic convex structure in the bead filling part is rectangular, isosceles trapezoid, isosceles triangle or arc.

4. The method for preparing a planar embedded LED-3D module according to claim 2, wherein the width D of the single periodic raised structure in the bead filling part satisfies the relationship:

(P-2R)/2≤d＜P-2R

in the formula: p is the center pitch of two adjacent pixels, and R is the radius of the lamp bead.

5. The method for manufacturing a planar embedded LED-3D module according to claim 2, wherein the area of the 3D polarized film bonded in the second step is larger than the area of the glue filling area, the 3D polarized film inherits the alignment point on the concave mold as the alignment point of the 3D moveable film, and the alignment point of the 3D moveable film is matched with the alignment point of the LED module.

6. The method for preparing the planar embedded LED-3D module according to claim 5, wherein in the first step, a concave die is engraved on the copper-plated roller or flat plate by using a circular arc knife, and the flatness of the engraved surface satisfies the relation

f represents the feed per revolution; r represents the radius of the arc nose.

7. The method for preparing the planar embedded LED-3D module according to claim 1, wherein in the second step, the UV-curable optical glue is cured by UV exposure and UV curing, and the hardness of the UV-curable optical glue is less than or equal to 75A.

8. The method for manufacturing the planar embedded LED-3D module according to claim 6, wherein when the female mold is engraved on the copper-plated roller, the relationship between the alignment points on the female mold and the alignment points on the LED module satisfies the following relationship:

in the formula: a is the circumferential distance of two alignment points along the circumferential direction on the concave die, H is the distance of two alignment points on the LED module, B is the circumferential division value of the engraving equipment, and D is the diameter of the copper-plated roller.

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