JPH08234684A - Dot matrix light emitting display with light shielding louver - Google Patents

Abstract

PURPOSE: To provide a dot matrix light emitting display with a light shielding louver which does not incur the mispositioning and lack of strength of the light shielding louver on the front surface of the display, has the good heat radiatability from the light shielding louver, eliminates the possibility of the occurrence of the destruction and disconnection of light emitting elements and the warpage, distortion, crack, peel, etc., of the light emitting display by a difference in coefft. of thermal expansion, contributes to an additional improvement of visibility and has high reliability. CONSTITUTION: A mask plate 2 which has approximately the same coefft. of thermal expansion of a wiring board 1 and is formed with many through-holes 21 and a convex lens assembly plate 3 which is formed with many convex lenses 31 and consists of a rubber elastic material are superposed and adhered on the front surface of the wiring board 1 arranged with the many LED light emitting elements 6. Further, the top end edges of an opening plate 42 formed with many openings 41 and the parts between the upper and lower openings are provided with light shielding eaves plate 43, by which the light shielding louver 4 is formed. The opening plate 42 of the light shielding louver 4 is adhered to the front surface of the convex lens assembly plate 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dot matrix light emitting display with a light-shielding louver, which has improved visibility, heat dissipation, warpage, distortion and the like.

[0002]

2. Description of the Related Art Various types of dot-matrix light-emitting displays have been developed so far, and the applicant of the present invention has developed a large number of L
A dot matrix light emitting display in which a mask plate having a large number of through holes is adhered to the front surface of a wiring board provided with ED light emitting elements, and each LED light emitting element is housed in each through hole to form a large number of light emitting dots. The body has already been developed.

This dot-matrix light-emitting display has the advantage of good visibility because it has a large apparent light-emitting dot despite the use of a small LED light-emitting element, but it can be used outdoors in bright places. In the case of use, it is necessary to attach a light-shielding louver made of a metal plate or the like to the front surface of the light-emitting display so as to prevent the direct visibility from being impaired so as not to impair the visibility.

[0004]

However, when the light-shielding louver made of a metal plate or the like is attached to the front surface of the light emitting display body by an adhesive, the internal heat generated from the light emitting element is generated due to the difference in thermal expansion coefficient between the two. Internal stress is generated due to changes in the temperature environment such as the external environment or the external environment, which may cause damage or disconnection of the light emitting element, and easily cause warping, distortion, cracks, peeling, etc. Since the screw holes are installed as loose holes having a large diameter to absorb the difference in thermal expansion and contraction, the light-shielding louver is apt to be displaced.

When the light-shielding louver is attached with screws or the like as described above, the light-shielding louver itself must have a certain level of strength, but if the light-emitting display has a small dot size, the thickness of the light-shielding louver is small. I have no choice but to thin
There is a problem that the strength and mounting strength of the light shielding louver itself are insufficient. Moreover, when the light-shielding louver is attached with a screw or the like, the light emitting display and the light-shielding louver do not come into close contact with each other, so that the thermal conductivity is poor, and therefore, there is a problem that heat generated from the LED light-emitting element is difficult to be radiated through the light-shielding louver.

Further, in the above-mentioned light emitting display, since it is difficult to collect the light emitted from the LED light emitting element, there is room for improvement so that the brightness is increased by the light collection to further improve the visibility.

The present invention has been made in view of the above problems, and it is an object of the present invention to prevent displacement of the light-shielding louver and lack of strength and to provide good heat dissipation from the light-shielding louver. Destruction and disconnection of the light emitting element due to the difference in thermal expansion coefficient, and warpage, distortion, cracks, peeling, etc. of the light emitting display body do not occur, and the visibility can be further improved.
An object of the present invention is to provide a highly reliable dot matrix light emitting display with a light-shielding louver.

[0008]

In order to achieve the above object, a dot matrix light emitting display with a light-shielding louver according to the present invention is provided on a front surface of a wiring board on which a large number of LED light emitting elements are arranged, and is substantially the same as the wiring board. A mask plate having a large thermal expansion coefficient and having a large number of through holes is adhered, and the LED is provided in each through hole.
A convex lens collective plate made of a rubber elastic body that accommodates the light emitting elements and has a large number of convex lenses corresponding to the respective through holes is adhered to the mask plate, and at least the upper edge and the upper and lower openings of the opening plate having a large number of openings. A light-shielding eaves plate is provided between them to form a light-shielding louver, and the aperture plate of this light-shielding louver is adhered to the convex lens assembly plate so that the convex lens faces the aperture of the aperture plate.

Desirably, the inside of each of the through holes is filled and sealed with a sealing material made of a silicone rubber elastic body having a Young's modulus of 500 g / mm ² or less, and a glass fiber reinforced epoxy is used as the wiring board. While using a printed wiring board with a resin plate as a base material, as the mask plate,
Any of a glass fiber reinforced epoxy resin plate, a glass fiber reinforced polyphenylene sulfide resin plate, a glass fiber reinforced polysulfone resin plate, a glass fiber reinforced polyamide resin plate, and a glass fiber reinforced polyphthalamide resin plate, which have substantially the same coefficient of thermal expansion as the substrate. A large number of translucent light beams are used, and as the convex lens collective plate, the thickness of the flat plate portion without convex lenses is 0.3 to 1.0 m.
The convex lens aggregate plate made of a rubber elastic body having a Young's modulus of 500 g / mm ² or less at m is used.

[0010]

When a mask plate having a coefficient of thermal expansion substantially the same as that of the wiring board is adhered to the front surface of the wiring board as in the present invention, even if the temperature environment changes, the space between the wiring board and the mask board is increased. The stress strain is substantially extremely small. Moreover, the influence of the minute stress strain on the arrangement of the light emitting element and the wiring portion is absorbed and alleviated by the sealing material made of the silicone rubber elastic body having the Young's modulus of 500 g / mm ² or less in each through hole. . The stress distortion due to the difference in coefficient of thermal expansion between the mask plate and the light-shielding louver is absorbed and relieved by the convex lens assembly plate made of a rubber elastic body. Therefore, in the light-emitting display of the present invention, although the wiring substrate, the mask plate, the convex lens collective plate, and the light-shielding louver are bonded and integrated, warping, distortion, cracks, peeling, and the like may occur due to changes in the temperature environment. Absent. In particular, the convex lens collective plate is made of a rubber elastic body having a Young's modulus of 500 g / mm ² or less, and the thickness of the flat plate portion not forming the convex lens is 0.3 to 1.0.
When the thickness is mm, the stress distortion of the mask plate and the light-shielding louver is remarkably absorbed and relaxed, and there is no fear that the light emitted from the LED light emitting element will leak to the adjacent convex lens through the flat plate portion.

Further, when the wiring substrate, the mask plate, the convex lens collective plate and the light shielding louver are integrally bonded as described above, the heat conductivity is improved, so that the heat generated by the LED light emitting element of the wiring substrate is generated by the mask plate, The convex lens collective plate and the aperture plate of the light-shielding louver are conducted to efficiently radiate heat to the outside air from the light-shielding eaves plate of the light-shielding louver, which also functions as a heat-dissipating fin, and keep the temperature rise low. On the other hand, since the light emitted from the LED light emitting element is condensed by the convex lens of the convex lens collecting plate, the brightness is increased, and the visibility is further improved in combination with the effect of blocking the external light by the light shielding louver.

Further, since the light shield louver is integrated with the convex lens collective plate by adhering the aperture plate to the convex lens collective plate, the strength of the light shield louver is sufficient even if the light shield louver aperture plate and the light shielding eaves plate are thin. Reserved.

[0013]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is an exploded perspective view showing an embodiment of a dot matrix light emitting display with a light-shielding louver according to the present invention, FIG. 2 is a partially enlarged vertical sectional view of the same embodiment, and FIG. 3 is a mask plate of the same embodiment. It is a partial cross-sectional view of a convex lens assembly plate.

This light-emitting display with a light-shielding louver comprises a wiring substrate 1, a mask plate 2, a convex lens collective plate 3 and a light-shielding louver 4 which are bonded and integrated, and 16 × 16 light emitting dots 10 are formed vertically and horizontally. An example is shown. That is, this light-emitting display with a light-shielding louver has a through hole 21 on the front surface of the wiring board 1 in which 16 × 16 LED light-emitting elements 6 are arranged vertically and horizontally.
Adhere the mask plate 2 formed by 16 × 16 vertically and horizontally,
While accommodating each LED light emitting element 6 in each through hole 21,
A convex lens 31 corresponding to each through hole 21 is provided in the vertical and horizontal directions 16 × 16.
The convex lens collecting plate 3 formed individually is adhered to the front surface of the mask plate 2, and the opening plate 42 of the light-shielding louver 4 in which 16 × 16 openings 41 are formed vertically and horizontally is adhered to the front surface of the convex lens collecting plate 3, By exposing the convex lens 31 to each opening 41, 16 × 16 light emitting dots 10 are formed vertically and horizontally. As the adhesive, a silicone rubber adhesive or an epoxy resin adhesive is preferably used.

In the wiring board 1, 16 vertical conductive patterns (for example, Y pattern group on the cathode side) are formed on the front surface of a copper clad laminate having a glass fiber reinforced epoxy resin plate as a base material by means of etching or the like. At the same time, a printed wiring board is formed by similarly forming 16 horizontal conductive patterns (for example, an X pattern group on the anode side) on the rear surface. As shown in FIG. The light emitting dots 10 are led out to the front surface of the wiring substrate 1. Then, the LED light emitting element 6 is provided on the lead-out portion.
Is fixed with a conductive paste such as silver paste, and is connected to the conductive pattern 11a on the substrate surface with the bonding wire 7,
An XY matrix lighting control circuit is configured. Also,
On the back surface of the wiring board 1, the conductive patterns 11a and 11b are provided.
The lead 7 of is projected.

The mask plate 2 adhered to the front surface of the wiring board 1 has substantially the same coefficient of thermal expansion (coefficient of thermal expansion in the vertical and horizontal directions) as that of the wiring board 1. In this embodiment, the wiring board 1 is used.
The same glass fiber reinforced epoxy resin plate as the above substrate is used with a large number of through holes 21 formed by drilling. In addition to this, as the mask plate 2, a glass fiber reinforced polyphenylene sulfide resin plate, a glass fiber reinforced polysulfone resin plate, which has substantially the same coefficient of thermal expansion as the wiring board 1,
A glass fiber reinforced polyamide resin plate, a glass fiber reinforced polyphthalamide resin plate, or the like having through holes can be used. These can be injection-molded relatively easily, and by adjusting the blending amount of glass fiber,
The coefficient of thermal expansion can be adjusted to be substantially the same as that of the wiring board 1. For example, in the case of a glass fiber reinforced polyphenylene sulfide resin plate, 40% by weight of glass fiber is used.
By blending the above components, the same coefficient of thermal expansion (about 10 × 10 ⁻⁶ / ° C.) as that of the wiring board 1 can be obtained.

The through hole 21 of the mask plate 2 efficiently reflects and emits the light from the LED light emitting element 6 to the front surface.
It is desirable that the inner peripheral surface be a white or silver-based light reflecting surface, and that it be formed in a mortar shape with a forward spread as shown in FIGS. 2 and 3. To make the inner peripheral surface of the through hole a light-reflecting surface, a white paint or a silver paint may be applied later, but a white paint (such as titanium oxide) is mixed in advance in the mask plate. It is desirable to keep. However, in order to improve the display contrast, it is desirable that the surface of the mask plate 2 is a light non-reflective surface by a method such as applying a black paint.

In addition, a translucent sealing material 9 is provided in the through hole 21.
It is desirable to fill and harden and to seal the mounting portion of the LED light emitting element 6 and the wire bonding portion in the through hole so as not to be corroded by external gas, moisture and the like. As the sealing material 9, a rubber elastic body such as silicone rubber having a Young's modulus of 500 g / mm ² or less is preferably used. When each through hole 21 is filled and sealed with such a sealing material 9, a minute stress caused by a minute difference in thermal expansion coefficient between the wiring board 1 and the mask plate 2 is absorbed and relaxed by the sealing material 9, Since the arrangement of the light emitting element 6 and the wiring portion are protected, the reliability is further improved. A plurality of LED light emitting elements 6 may be housed in the through hole 21.

The convex lens assembly plate 3 adhered to the front surface of the mask plate 2 is made of a rubber elastic body, preferably a rubber elastic body having a Young's modulus (elastic modulus) of 500 g / mm ² or less, and forms the convex lens 31. The thickness t of the flat plate part is 0.3
The one set to ˜1.0 mm is used. When the convex lens assembly plate 3 is formed of a so-called high-rigidity material having a Young's modulus greater than 500 g / mm ² , when the wiring substrate 1 or the mask plate 2 and the light shielding louver 4 have different thermal expansion coefficients, thermal stress due to changes in temperature environment is generated. It will be warped, distorted, cracked, peeled or the like. Even if the convex lens assembly plate 3 is made of the above rubber elastic body, the thickness t of the flat plate portion is 0.3 m.
If the thickness is smaller than m, the action of absorbing and relaxing the stress by the convex lens assembly plate 3 becomes insufficient, and similarly, warp, strain, crack, peeling, etc. are likely to occur. On the other hand, when the thickness t of the flat plate portion is larger than 1.0 mm, the LED light emitting element 6
Since the light emitted from the light leaks through the flat plate portion to the adjacent convex lens 31, the display may become unclear. Specific examples of the rubber elastic body having a low Young's modulus suitable for the convex lens assembly plate 3 include transparent silicone rubber, neoprene rubber, urethane rubber, etc. Among them, the silicone rubber is excellent in heat resistance and weather resistance. It is particularly preferably used because the Young's modulus changes little with time.

In the convex lens assembly plate 3 of this embodiment, the convex lenses 31 corresponding to the through holes 21 of the mask plate 2 are arranged vertically and horizontally 16 ×.
Sixteen lenses are formed in an array, and each convex lens diameter R is set so that the area ratio of the light emitting display surface is in the range of about 30 to 50%. In this case, each of the convex lenses 31 has better light-converging properties in the up-and-down direction than in the left-right direction, and is preferably formed in a horizontally-long substantially hemispherical shape capable of converging light in the height range of the obliquely downward viewpoint. . When the convex lens 31 having such a shape is used, the visibility at the practical viewing position is significantly improved.

The light-shielding louver 4 adhered to the front surface of the convex lens collecting plate 3 is made of a metal such as aluminum or a heat-resistant plastic such as polycarbonate or Noryl resin, and corresponds to the convex lens 31 of the convex lens collecting plate 3 by 16 ×.
A structure is provided in which a light shielding eaves plate 43 is provided between the upper edge of an opening plate 42 having 16 openings 41 formed vertically and horizontally and the upper and lower openings.
The entire surface is made a black light absorbing surface to improve the display contrast, and the visibility is not impaired by the reflection of external light.

As described above, the through hole 2 is formed in one light emitting dot 10.
In the example in which 1 and the convex lens 31 correspond to each pair, 16
The x16 dot structure is suitable for a light emitting display body having a relatively small dot size of about 40 mm square to 200 mm square.

The aperture plate 42 of the light shielding louver 4 and the light shielding eaves plate 43
The plate thickness of is preferably 0.5 mm or less for a light-emitting display having a small dot size with a light-emitting dot pitch of 4 mm or less. Even if it is thin as described above, it is sufficiently bonded and integrated with the convex lens collective plate 3. It is possible to obtain excellent practical strength. Further, it is desirable that the protruding length of the light-shielding eaves plate 43 be set to be approximately the same as the mutual distance between the light-shielding eaves plates. If the protruding length of the light-shielding eaves plates 43 is longer than the mutual interval of the light-shielding eaves plates, the light-shielding eaves plate 43 becomes an obstacle when the light-emitting display body is looked up from diagonally below, but the light-shielding eaves plate 43 is not used.
If the projecting length is too short, absorption and blocking of direct sunlight from above will be insufficient, and in either case, it will be difficult to satisfactorily improve visibility. Note that the light-shielding eaves plate 43 may be provided with a slight slanting inclination.

In the light-emitting display with a light-shielding louver having the above-described structure, the wiring board 1 and the mask plate 2 have substantially the same coefficient of thermal expansion, so that the wiring board 1 and the mask board 2 can be changed even if the temperature environment changes. The stress strain between
Moreover, the influence of the minute stress strain on the arrangement of the light emitting elements and the wiring portion is absorbed and alleviated by the sealing material 9 made of the silicone rubber elastic body in each through hole. The stress strain due to the difference in coefficient of thermal expansion between the mask plate 2 and the light-shielding louver 4 is
It is absorbed and relaxed by the convex lens assembly plate 3 made of a rubber elastic body. Therefore, although the wiring substrate 1, the mask plate 2, the convex lens assembly plate 3, and the light-shielding louver 4 are integrally bonded to each other, this light-emitting display body is warped, distorted, cracked, peeled, or the like due to a change in temperature environment. In addition, there is no concern that the LED light emitting element will be damaged or broken.
In particular, if the convex lens assembly plate 3 is made of a rubber elastic body having a Young's modulus of 500 g / mm ² or less, and the flat plate portion not forming the convex lens has a thickness t of 0.3 to 1.0 mm, the mask The plate 2 and the light-shielding louver 4 have remarkable stress-strain absorption and relaxation effects, and there is no concern that light emitted from the LED light-emitting element 6 will leak to the adjacent convex lens through the flat plate portion.

Further, since the light-shielding eaves plate 43 of the light-shielding louver 4 absorbs and blocks direct sunlight from above in this light-emitting display, the display relative brightness of the light-emitting display is increased and the display contrast is improved. Visibility is greatly improved. Moreover, since the heat conductivity to the light shielding louver 4 is improved by the adhesion, the heat generated in the LED light emitting element 6 of the wiring board 1 is conducted to the mask plate 2, the convex lens collective plate 3 and the opening plate 42 of the light shielding louver 4, Heat is efficiently radiated to the outside air from each light-shielding eaves plate 43 that also serves as a heat radiation fin.
In particular, when the light-shielding louver 4 is made of a metal-based material such as aluminum having a high thermal conductivity, the heat radiation property is significantly improved. Therefore, a more reliable light emitting display body in which the arrangement density of the LED light emitting elements 6 is increased to obtain a high-luminance light emitting body or the temperature increase is suppressed to a low level by keeping the arrangement density of the LED light emitting elements 6 unchanged. Can be In addition, since the light-shielding louver is not displaced as in the case of the conventional screw fastening, the reliability can be greatly improved in these respects.

In the above embodiment, 16 × 16 openings 4 are provided.
The light-shielding louver 4 having the number 1 is adhered to the convex lens assembly plate 3. For example, four light-shielding louvers having 8 × 8 openings 41, which are divided into four, are arranged side by side and adhered. You may make it adhere side by side.

On the contrary, one light shielding louver 4
On the other hand, the wiring board 1, the mask plate 2, and the convex lens collective plate 3 may each be configured as a plurality to form an integrated light-emitting display. Further, one opening 41 of the light-shielding louver 4 may be provided with a plurality of convex lens collective plates 3. The LED light emitting elements 6, the through holes 21, and the convex lenses 31 may be formed in an array so that the convex lenses 31 of FIG.

FIGS. 4 and 5 are an exploded perspective view and a partially enlarged sectional view showing such a second embodiment, which is an example suitable for a large dot size of about 150 mm square or more with an 8 × 8 dot configuration. is there.

That is, the light-emitting display body with the light-shielding louver is
The mask plates 2 are adhered to the four wiring boards 1 respectively, and the four convex lens assembly plates 3 are adhered to each mask plate 2 to form four light emitting display bodies. The convex lens collective plate 3 is adhered to the aperture plate 42 of one light-shielding louver 4 so that the plurality of convex lenses 31 face one aperture 41.

The light-shielding louver 4 has 8 × 8 large square rectangular openings 41 formed in the aperture plate 42 so that the 8 × 8 light-emitting dots 10 are formed, and the light-shielding louver 4 emits four light. A structure in which a frame wall is integrally formed around the opening plate 42 so as to also serve as a case of the display body, and the light-shielding eaves plate 42 is provided so as to project obliquely downward between the upper edge of the opening plate 42 and the upper and lower openings. Has become. Then, a plurality of LED light emitting elements 6 are assembled and arranged on the wiring board 1 so that a plurality of LED light emitting elements 6 correspond to one opening 41 of the light shielding louver 4 and form one light emitting dot. Similarly, the mask plate 2 formed by collecting a plurality of through holes 21 and the four convex lens collecting plates 3 formed by collecting a plurality of convex lenses 31 are adhered to each other, and 4 × 4 dot light emission is performed. A convex lens aggregate plate 3 is formed by forming a display body and arranging four of the light emitting display bodies.
Is integrated with the aperture plate 42 of the light-shielding louver 4 to form a light-emitting display body with a light-shielding louver of 8 × 8 dots. When one light emitting dot 10 is composed of a plurality of through holes 21 and convex lenses 31 as in the second embodiment, the through hole size and the convex lens diameter can be set regardless of the dot size. At this time, all the LED light emitting elements 6, the through holes 21, and the convex lenses 31 are made to correspond to each other in a ratio of 1: 1 and the through hole size is set to the minimum necessary for mounting, wiring and sealing one LED light emitting element. Is preferable from the viewpoint of improving the front reflection efficiency of light emission. Further, the convex lens diameter R is preferably set so that the area ratio of the light emitting display surface is 30% or less as low as possible from the viewpoint of improving the visibility of the display. Further, by mixing LED light emitting elements having different light emitting colors in the set of LED light emitting elements, it is possible to obtain a display body in which light emitting dots emit light in various colors.

Since the specific structures of the wiring board 1, the mask plate 2, the encapsulating material 9, the convex lens collective plate 3 and the like are the same as those in the above-mentioned embodiment, the same reference numerals are given to the same members in FIGS. 4 and 5. The description is omitted.

Such a light emitting display with a light-shielding louver also
Warp, distortion, cracks, peeling, etc. can be prevented, and the convex lens 3
Needless to say, the visibility is improved by 1 and the light shielding louver 4, and the heat dissipation from the light shielding eaves plate 41 of the light shielding louver is good.

[0034]

As is apparent from the above description, in the dot matrix light emitting display with a light-shielding louver of the present invention, the coefficient of thermal expansion of the wiring board and the mask plate are substantially the same even if the temperature environment changes. The stress strain between the two is extremely small, and since the stress strain of the mask plate and the light-shielding louver is absorbed and relaxed by the convex lens assembly plate of the rubber elastic body, there is no warp, strain, crack, peeling, etc. Even if it is installed in a place where the surroundings are bright such as, the visibility is good due to the light blocking effect of the light blocking louver and the light collecting function of the convex lens assembly, and the heat dissipation through the light blocking louver is good, so that the LED light emitting element is arranged. It can be used as a high-luminance light-emitting display with high density, or as a highly-reliable light-emitting display with suppressed temperature rise by keeping the LED light-emitting element arrangement density unchanged. The light-shielding louver will not be displaced as in the case, and even if the thickness of the light-shielding louver is reduced, sufficient practical strength can be obtained by bonding with the mask plate. It has various remarkable effects such that it can be preferably applied to a light emitting display having a small light emitting dot size.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of a dot matrix light emitting display with a light-shielding louver according to the present invention.

FIG. 2 is a partially enlarged vertical sectional view of the embodiment.

FIG. 3 is a partial cross-sectional view of a mask plate and a convex lens collective plate of the same embodiment.

FIG. 4 is an exploded perspective view showing another embodiment of the dot matrix light emitting display with a light-shielding louver of the present invention.

FIG. 5 is an enlarged partial sectional view of the embodiment.

[Explanation of reference numerals] 1 wiring board 2 mask plate 21 through hole 3 convex lens collective plate 31 convex lens 4 light shielding louver 41 opening 42 opening plate 43 light shielding eaves plate 6 LED light emitting element 9 sealing material 10 light emitting dot

Claims (4)

[Claims] 1. A mask plate, which has a coefficient of thermal expansion substantially the same as that of the wiring board and is formed with a large number of through holes, is adhered to the front surface of a wiring board on which a large number of LED light emitting elements are arranged, and each transparent board is bonded. An LED light-emitting element is housed in the hole, and a convex lens collective plate made of a rubber elastic body having a large number of convex lenses corresponding to each through hole is bonded to a mask plate, and at least the upper end of the aperture plate having a large number of openings. A light-shielding louver is provided by providing a light-shielding eaves plate between the edge and the upper and lower apertures, and the aperture plate of the light-shielding louver is adhered to a convex lens assembly plate so that the convex lens faces the aperture of the aperture plate. Dot matrix light emitting display with. 2. The method according to claim 1, wherein each through hole of the mask plate accommodating the LED light emitting element is filled and sealed with a sealing material made of a silicone rubber elastic body having a Young's modulus of 500 g / mm ² or less. A dot matrix light emitting display with a light-shielding louver as described above. 3. The wiring board is a printed wiring board having a glass fiber reinforced epoxy resin plate as a base material, and the mask plate has a glass fiber reinforced epoxy resin having a thermal expansion coefficient substantially the same as that of the substrate. The plate, the glass fiber reinforced polyphenylene sulfide resin plate, the glass fiber reinforced polysulfone resin plate, the glass fiber reinforced polyamide resin plate, or the glass fiber reinforced polyphthalamide resin plate is formed with a large number of light transmissions. The dot matrix light emitting display with a light-shielding louver according to claim 2. 4. The convex lens collective plate is 500 g / mm ²
4. The light shield according to claim 1, which is made of a rubber elastic body having the following Young's modulus, and the thickness of the flat plate portion of the convex lens collective plate on which the convex lens is not formed is 0.3 to 1.0 mm. Dot matrix light emitting display with louver.