JPH1012926A - Full color emission diode lamp and display - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a clear emission display surface of high uminance by realizing high density arrangement. SOLUTION: The LED lamp 10 comprises red, green and blue LED chips 11R, 11G, 11B arranged at a constant interval in substantially regular triangle on a plane, a lead (lead frame 12), and an enclosure (resin mold) 15 formed substantially into a right prism corresponding to the three LED chips. Since the LED chips 11R, 11G, 11B are arranged at respective corners of the substantially regular triangular prism enclosure 15 and occupy a smallest area, an emission display surface where three primary color LED chips are arranged tightly can be formed by arranging the LED chips while abutting on the side face of the enclosure 15. The display comprises nondirectional unit dots where six full color emission LED lamps 10 are arranged adjacently in regular hexagon.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an all-color light emitting diode lamp (RGB lamp) having three kinds of light emitting diode chips of red, green and blue, which are three primary colors of light, and a display device using the same. Things.

[0002]

2. Description of the Related Art Conventionally, a light emitting diode (LED), which is a small semiconductor light emitting element, is used not only as a pilot lamp and various indicators but also vertically and horizontally. It is also used as a display device which forms a dot matrix by arranging a large number of dots, and emits and displays characters, figures, and the like. And in recent years, such display devices have
From single color to multicolor, and all colors including white (full color)
On the other hand, the trend toward display has been promoted from simple figures and the like to image display, and application to a color television has recently been studied.

[0003] Such a full-color (full-color) display device generally uses three types of single LED lamps that emit red, green, and blue light, which are the three primary colors of light, respectively, and a large number of these are dispersed and arranged. Formed. By selectively lighting the LED lamps of the respective colors, it is possible to perform light emission display of substantially all colors including white. In this case, a green LED lamp having a relatively low luminous intensity is required to obtain a sufficient color mixture of white.
More often used. However, the light emitting display surface formed of an array of a large number of single LED lamps formed in this way generally has a rough texture because the interval between each LED lamp or each LED chip is relatively wide.

On the other hand, a green LED chip that emits light with sufficient luminous intensity is used, and a red LED chip and a blue LED chip are used.
All-color LED lamps (RGB lamps, three primary color lamps, and full color LED lamps) which are provided with an ED chip together with the three LED chips and which are compactly formed as a single LED lamp are also disclosed in, for example, 4-
These are known from JP 365382, JP-A-6-177425 and the like. Specifically, this all-color light emitting type L
The ED lamp is formed in the same manner as a normal single-angle LED lamp except that it has these three LED chips and has a corresponding number of leads, and these three LED chips are used as lead frames as leads. And are electrically connected to each other, and are sealed by a resin mold made of a transparent epoxy resin or the like. The resin mold as an outer enclosure that surrounds, protects, and seals the LED chip is formed in a cylindrical shape, and the entire outer shape is a shell-like shape together with the lens provided integrally at the tip. Is formed.

[0005]

Incidentally, when such a full-color (full-color) display device comprising a matrix of LED lamps is applied particularly to a color television or the like, not only sufficient luminance but also display is obtained. It is required that the image has fine texture, that is, high resolution and clear (clear). Therefore, the red, green, and blue LED chips, which are point light sources, need to be arranged at a sufficiently high density, and the higher the distribution density, the more clear a light emitting display surface can be formed. it can. And such a denser array of LED chips of each color would
It is easier to obtain by using an all-color LED lamp having a combination of these three LED chips than using a single lamp having three LED chips in combination with each color.

However, such an all-color light emitting LE
Even if it is a D lamp, a conventionally known all-color light emitting LED lamp has a shell-like outer shape similar to a general single LED lamp, and the outer body is formed in a columnar shape. There is a certain limit to the arrangement. In other words, even when the sides of the enclosure are abutted against each other and arranged as closely as possible, since the enclosure is cylindrical, the convex surface hinders the proximity of the enclosure. This is because a wide space is formed. Therefore, there is still a limit in forming a high-luminance and clear light-emitting display surface using a conventional all-color light-emitting LED lamp.

Accordingly, an object of the present invention is to provide an all-color LED lamp which can be arranged at a high density, thereby obtaining a clear and high-luminance light-emitting display surface. is there.

Another object of the present invention is to provide a display device capable of obtaining a clear, high-luminance, and non-directional light-emitting display surface using the all-color light-emitting LED lamp. It is assumed that.

[0009]

An all-color LED lamp according to the present invention emits red light and emits green light, which are arranged in a substantially equilateral triangle at equal intervals in plan view. A green LED chip, a blue LED chip emitting blue light, and each of the three LEDs
Leads electrically connected to the chip, and the outer shape is formed in a substantially triangular prism shape corresponding to the arrangement of the three LED chips, and surrounds and protects the periphery of the three LED chips, And an outer enclosure to be sealed, and each LED chip is arranged near each corner of the outer enclosure.

That is, in this all-color light emitting LED lamp, three LED chips of three primary colors of light, red, green, and blue, are arranged in a substantially equilateral triangular shape with good balance. Surround and protect the chip,
In addition, since the outer enclosure to be sealed is formed in a substantially equilateral triangular prism shape having a substantially minimum cross-sectional area corresponding to their arrangement, the side surfaces of the outer enclosure are arranged adjacent to each other in contact with each other. In this way, it is possible to spread the sheets efficiently and arrange them at a high density. Therefore, a clear and high-luminance light-emitting display surface can be formed.

According to a second aspect of the present invention, there is provided a display device in which a plurality of the above-mentioned all-color emitting LED lamps are arranged, and the six all-color emitting LED lamps are arranged in a ring shape. The six full-color LED lamps, which substantially consist of a set of unit dots (pixels) having a substantially regular hexagonal shape and form the unit dots, are arranged in a state in which the side surfaces of the envelope are in contact with each other. Further, one of the all-color light emitting LED lamps adjacent to each other is arranged in a ring so as to rotate by 180 degrees relative to the other.

That is, in this display device,
Since the six all-color light emitting LED lamps arranged adjacent to each other in a substantially regular hexagonal shape in a specific relationship are formed as unit dots (pixels), each of the red, green and blue colors LE
It is possible to obtain a light emitting display surface in which D chips are not adjacent to each other and are uniformly dispersed in a well-balanced manner. Therefore, it is possible to obtain a light-emitting display surface that is not only clear, has high brightness, but also has no direction.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described below.

FIG. 1 is a perspective view showing an all-color light emitting LED lamp according to a first embodiment of the present invention. FIG. 2 is a cross-sectional view of the full-color LED lamp of FIG. 1 taken along line XX. FIG. 3 is a plan view showing the all-color LED lamp of FIG. 1 as viewed from above.

As shown in FIGS. 1 to 3, an LED (light emitting diode) lamp according to the present embodiment, which is indicated by a reference numeral 10, has three LED chips made of a pn-junction optical semiconductor crystal as light emitting elements. 11, that is, a red LED chip 11R that emits red light, which is the three primary colors of light, a green LED chip 11G that emits green light, and a blue LED chip 11B that emits blue light. Therefore, the LED lamp 10 is formed as an all-color light emitting LED lamp, also called an “RGB lamp”, and the three-color LED chips 11R, 11G, and 11B are selected individually or in combination of two or all. By the light-on operation, light of substantially all colors including not only red, green, and blue but also a mixture of these colors and white is emitted.

In each of these LED chips, the red LED chip 11R can be formed of, for example, gallium aluminum arsenide (GaAlAs). Further, the green LED chip 11G is, for example, more blue LED chip 11B than gallium phosphide (GaP).
Can provide, for example, relatively high luminous intensity III
Group nitride semiconductor (In _x Al _y Ga _1-xy N, where 0 ≦
x, y ≦ 1).

Specifically, the all-color light emitting type L of the present embodiment
The ED lamp 10 is formed as a lead frame type, and the red, green, and blue LED chips 11R, 11G, 1
1B is supported by a lead frame 12 forming an external lead also serving as a frame, and is electrically connected. That is, as shown in FIG. 2 in particular, the lead frame 12 is composed of a pair of main lead frame 12a and sub lead frame 12b which form either a cathode or an anode.
11G and 11B are fixed by die bonding in a reflection dish (mirror) 13 formed at the tip of the main lead frame 12a, whereby the back surface electrode is electrically connected, and the front surface electrode is Gold wire 14
And is electrically connected to the sub-lead frame 12b by wire bonding. However, since the blue LED chip 11B has both electrodes on the front side, the main lead frame 12a is
Are electrically connected by The main lead frame 12a for die bonding of the LED chip is used.
And a sub-lead frame 12b for wire bonding
Which is used as a cathode or an anode,
Based on the junction structure of the LED chips 11R, 11G, and 11B, it is determined that a forward current flows through them.

The LED chips 11 for each color are
R, 11G, 11B and the end portions of the six lead frames 12 connected to them are made of a light-transmitting resin, for example, a transparent epoxy resin, in order to protect and seal them. It is covered and surrounded by a resin mold 15. Further, three lenses 16 made of hemispherical convex lenses are provided at the tip of the resin mold 15.
Are integrally formed corresponding to the respective LED chips 11R, 11G, and 11B. Therefore, the red, green, and blue radiated lights emitted from the respective LED chips 11R, 11G, and 11B pass through the light-transmitting resin mold 15 and are distributed by the corresponding lenses 16 to the outside (upper part in the figure). Side).

Here, each LED chip 11R, 11G,
11B are arranged in a plane, that is, at the same height and at equal intervals to each other. That is, they are arranged such that when they are connected to each other as points, a substantially equilateral triangle having these as vertices is formed. The distance between the adjacent hemispherical lenses 16 is the minimum distance between the corresponding hemispherical lenses 16. That is, as shown in FIG. 3, the three lenses 16 form circumscribed circles circumscribing each other in plan view, and the LED chips 11R, 11G,
11B is arranged.

The LED chips 11R, 11R
Corresponding to the arrangement of G and 11B, the resin mold 15 forming the outer enclosure is also formed in a prism shape with a substantially equilateral triangular cross section. Specifically, as shown in FIG. 3, the cross-sectional contour shape of the resin mold 15 is a shape in which the outer sides of three circular lenses 16 circumscribing each other are surrounded by the shortest contour lines. The common tangent line of the adjacent circular lens 16 is defined as each side, and the corner portion has a substantially equilateral triangular shape formed as an arc following the outer shape of the lens 16. That is, the resin mold 15 is formed so as to have a minimum contour shape necessary for the three lenses 16 circumscribing each other and to have a substantially minimum cross-sectional area. By the way, each L
The ED chips 11R, 11G, 11B are arranged near each corner of the resin mold 15 having a substantially triangular prism shape.

As described above, the all-color light emitting type L of the present embodiment
The ED lamp 10 includes a red LED chip 11R that emits red light, which is three primary colors of light, and a green LED that emits green light.
Three LED chips including a chip 11G and a blue LED chip 11B that emits blue light, and six leads as leads electrically connected to these three LED chips 11R, 11G, and 11B. A frame 12,
Surround and protect these three LED chips,
In addition, the LED chip 11R, 11G, 1 is basically provided with a resin mold 15 as an enclosure to be sealed.
1B are arranged in a substantially equilateral triangular shape at equal intervals in plan view, and the resin mold 15 as an enclosure is formed in an approximately equilateral triangular shape corresponding to the prismatic arrangement of the approximately equilateral triangle. And the resin mold 15
Near each corner of the LED chips 11R, 11R
G and 11B are arranged respectively.

Therefore, according to the full-color light emitting LED lamp 10, the three LED chips 11R, 11G and 11B of the three primary colors of light, red, green and blue, are arranged in a substantially equilateral triangular shape with good balance. Therefore, not only can all-color light emission with good color mixing be obtained, but also in response to the arrangement of the LED chips 11R, 11G, and 11B, the resin mold 15 as the outer enclosure has a substantially regular triangular prism shape. Since it is formed, it can be formed most compactly with a size having a substantially minimum cross-sectional area. That is,
If the cross-sectional profile of the columnar resin mold 15 is a circle, a quadrilateral, or the like, the profile circumscribes the substantially equilateral triangle of the present embodiment, and is larger. In addition, since it is formed in a simple prismatic shape, the side surfaces can be in contact with each other to spread them efficiently and to arrange them at high density. Therefore, the all-color LED lamp 10 of the present embodiment can be used as a pilot lamp, various indicators, and the like. However, since the multiple lamps are arranged to form a display panel or a display device such as a color television. It is possible to form a high-brightness, clear (high-resolution) light-emitting display surface by arranging a large number of high-density arrangements.

When forming the display device, the all-color LED lamps 10 can be arranged in any form. For example, by alternately changing the direction and abutting the side surfaces, the side surfaces can be arranged in a linear shape (band shape). However, by arranging as follows, it is possible to obtain a non-directional light emitting display surface in which the red, green, and blue LED chips are uniformly scattered.

FIG. 4 is a plan view showing a display device formed by arranging the all-color LED lamps.

That is, as shown in FIG. 4, the display device indicated by the reference numeral 100 is formed by arranging a large number of the above-described all-color light-emitting LED lamps 10 having a substantially regular triangular prism shape. Note that, in the drawing, R attached to each of three circular lenses 16 of the all-color light emitting LED lamp 10 are shown.
(Red), G (green), and B (blue) are LED chips 11R,
The color of light emitted from each of the lenses 11G and 11B through the lens 16 is shown. That is, those R,
G and B show the arrangement of the LED chips 11R, 11G and 11B.

The all-color LED lamps 10 are arranged with their side surfaces in contact with each other, and one of the all-color LED lamps 10 adjacent to each other is 180 degrees relative to the other. They are arranged in a rotating relationship, that is, one is inverted relative to the other.
Therefore, the display device 100 has R, G,
The unit 100a in which the six all-color light emitting LED lamps 10 in which the dispersion state of B is uniform is annularly arranged in a substantially regular hexagonal shape in the above relationship is configured as a unit dot (pixel). ing.

In other words, the display device 100
Is a substantially all hexagonal unit dot 100a in which six full-color LED lamps 10 are arranged in a ring, and the six full-color LED lamps forming the unit dot 100a Reference numeral 10 denotes an all-color LED lamp 10 in a state in which the side surfaces of a resin mold 15 as an outer body having a regular triangular prism shape are in contact with each other, and are adjacent to each other.
Are arranged in a ring in such a manner that one of them is rotated by 180 degrees relative to the other. According to this, by one kind of all-color emitting LED lamp 10, that is, by all-color emitting LED lamp 10 in which R, G, and B are arranged in this order in a counterclockwise direction in plan view,
It is possible to obtain a well-balanced light-emitting display surface in which R, G, and B scattering are uniform. In other words, it is possible to obtain a light-emitting display surface that is not only bright and clear but also has no directionality. In addition, due to its uniform and well-balanced dispersibility,
A display device with high reproducibility of a graphic or image including a curve or a curved surface can be realized.

Similarly, a unit dot having no directivity is
The six full-color LED lamps 10 are also formed by arranging them in a regular hexagonal shape in such a manner that one of the adjacent full-color LED lamps 10 is rotated by 60 degrees relative to the other. be able to. However, in this case, any one of R, G, and B is arranged adjacent to each other in a ring shape, and their scattering state is not uniform.

By the way, in the all-color light emitting LED lamp 10 of the above-described embodiment, the resin mold 15 as the outer enclosure has a substantially triangular prism outer shape, but the corners of the lens 16 It is formed in an arc shape according to the outer shape. The lamp is thereby substantially minimized, but if necessary, this resin mold 1
5 can also be formed in a substantially equilateral triangular prism shape having corners. The cross-sectional shape or volume of the columnar resin mold 15 is made smaller by forming the cross-sectional shape of the column-shaped resin mold 15 into a cloverleaf shape along the outer contour shape of the three lenses that abut against each other. be able to. In addition, the all-color LED lamps formed as described above can be arranged more densely. However, it is difficult to form a resin mold in such a shape in the manufacture of a mold. Further, such an all-color LED lamp is required to have a higher density, and a red, green, and blue LED is required. In order to arrange the chips so that the scattering state of the chips becomes uniform, two types of all-color light emitting LEDs L in which the order of arrangement of the respective LED chips is reversed.
An ED lamp is required.

Meanwhile, in the all-color LED lamp 10 of the above embodiment, each LED chip 11
Three hemispherical lenses 16 are provided corresponding to R, 11G, and 11B, respectively. The lens 16 can be formed in other external shapes such as an elliptical shape.
Such a lens 16 can be omitted. However, by providing the lens 16 as in the above embodiment, it is possible to more uniformly orient each color of red, green and blue, thereby increasing the on-axis (front) luminous intensity and the difference depending on the viewing position. And color mixing can be further improved.

It should be noted that the all-color light emitting LED lamp having such a substantially equilateral triangular prism outer shape can be configured in various other specific forms.

FIG. 5 is a perspective view showing an all-color light emitting LED lamp according to a second embodiment of the present invention. 6 is a cross-sectional view of the all-color LED lamp of FIG. 5 taken along the line YY. FIG. 7 is a plan view of the all-color LED lamp viewed from above. In the figures, the same reference numerals as those of the all-color LED lamp of the first embodiment shown in FIGS. 1 to 3 indicate the same or corresponding components.

That is, the full-color light-emitting LED lamp of the second embodiment, which is indicated as a whole by 20, is formed as a lead frame like the first embodiment, and emits red light. LED chip 11R, green LED chip 11G that emits green light, and blue LE that emits blue light
And a D chip 11B. However, in the present embodiment, the lead frame as a lead is composed of a single common lead frame 21 and three individual lead frames 22, and is connected to a reflection plate 23 formed at the tip of the common lead frame 21. , Those LEDs
The chips 11R, 11G, and 11B are die-bonded and their one-side electrodes are electrically connected, and each of the other electrodes is wire-bonded to each individual lead frame 22 via the gold wire 14 to be electrically connected. It is connected to the. Therefore, the number of leads forming the external leads is
In the present embodiment, the number is four.

More specifically, the reflecting dish (parabola) 23 is formed in a relatively large, substantially equilateral triangular shape, and the LED chips 11R, 11G, 11B are arranged at three tops (corners) thereof. Individual lead frame 2 outside the top
2 are arranged. Therefore, the LED chip 11
R, 11G, and 11B are arranged so as to form a substantially equilateral triangle at equal distances in plan view. In correspondence with such an arrangement, the resin mold 15 made of a light-transmissive resin material such as an epoxy resin is formed in a substantially triangular prism shape. LED chips 11R, 11G, and 11B are arranged respectively. The resin mold 15
Here, the lens 16 integrated with is formed as a single convex lens having a substantially hemispherical shape.

Therefore, the all-color light emitting type L of the present embodiment
The ED lamp 20 has the same effect as the all-color light emitting LED lamp 10 of the first embodiment because the ED lamp 20 includes the resin mold 15 as a substantially triangular prism-shaped outer enclosure. That is, since they are formed in a well-balanced and compact manner, they can be laid out and arranged at a high density, and a bright and clear light-emitting display surface can be formed. Further, by arranging the LED chips in the same manner as in FIG. 4, it is possible to form a light emitting display surface in which the LED chips of each color are uniformly dispersed and have no directivity.

FIG. 8 is a plan view showing an all-color LED lamp according to a third embodiment of the present invention as viewed from above. FIG. 9 is a sectional view of the all-color LED lamp of FIG. 8 taken along the line ZZ. In the drawings, the same reference numerals are used for the same or corresponding portions as those of the all-color light emitting LED lamps of the embodiments described above, and the detailed description is omitted.

As shown in FIGS. 8 and 9, the all-color light emitting LED lamp of the third embodiment, which is designated by the reference numeral 30, is formed as a reflection type. That is, the all-color LED lamp 30 includes a base (stem) 31 formed of a heat-resistant hard resin or a ceramic material, and a lead frame 32 integrally joined on the surface of the base 31. On this lead frame 32, three light emitting elements of red, green and blue
The ED chips 11R, 11G, 11B are electrically connected.

Specifically, the lead frame 32
A single common lead frame 32a having three terminals
And three individual lead frames 32b, and their terminals are formed in grooves 31a formed on the side surfaces of the base 31 (FIG. 9).
Extending downward through. Each of the three terminals of the common lead frame 32a and the terminal portion of the individual lead frame 32b is horizontally bent at the lower portion of the base 31, so that it can be surface-mounted on the LED mounting board. I have. In the three LED chips 11R, 11G, and 11B, the electrodes on the lower surface are welded to the three individual lead frames 32b with silver paste or the like, and the electrodes on the upper surface are connected to the common lead via gold wires. Wire-bonded to the terminals of the frame 32a.

The base 31 is inclined in a mortar shape,
The reflector 33 having a white light-reflective inner surface is composed of three LEs.
The D chips 11R, 11G, and 11B are integrally joined so as to surround the periphery of the D chips 11R, 11G, and 11B. Further, a resin mold 34 made of a light-transmissive resin material such as epoxy resin is potted in an inner space of the reflector 33. The LED chip is sealed and protected. Therefore, each LED chip 11
Light emitted from R, 11G, and 11B passes through this resin mold 34, and a part of the light is reflected by the reflector 33 and emitted forward. Note that a lens is not provided here.

And here, three LED chips 11
R, 11G, 11B are the substrate 31 and the lead frame 32
Above, they are arranged in a substantially equilateral triangular shape equidistant from each other in a plane. Also, corresponding to the arrangement of the LED chips, a resin mold 34 forming an enclosure and a base 31 are formed.
The outer shape of the reflector 33 is formed in a regular triangular prism shape, and each LED chip is disposed near each vertex thereof. Therefore, the all-color light emitting LED lamp 30 of the present embodiment also
All-color LED lamp 1 according to first and second embodiments
Like 0 and 20, it is formed with a minimum size in a well-balanced and compact manner, so that a high-density arrangement is possible, whereby a bright and clear light-emitting display surface can be formed.

The all-color LED lamp of the present invention can be embodied in various modes as described above. In addition, for example, a printed wiring board is used as a supporting base instead of a lead frame, and a red , Green and blue LED chips can be bonded and arranged, and the envelope can be formed as a hollow housing.
However, also in these cases, the LED chips of the three primary colors are arranged in a substantially equilateral triangle at equal intervals in a plane,
In addition, surrounding the periphery of those LED chips,
The outer enclosure forming the columnar body of the lamp has a substantially equilateral triangular outer shape corresponding to their arrangement in a substantially equilateral triangular shape, i.e., so that each LED chip is arranged near a corner. It is formed into a shape.

[0042]

As described above, the all-color light emitting type L according to claim 1 is described.
The ED lamp includes a red LED chip that emits red light, a green LED chip that emits green light, and a blue LED chip that emits blue light, which are arranged in a substantially regular triangular shape at equal intervals in plan view. Leads electrically connected to each of the three LED chips and the three LEDs
An outer shape is formed in a substantially equilateral triangular prism shape corresponding to the arrangement of the chips, and an outer enclosure that surrounds and protects and seals around these three LED chips. It is arranged in the vicinity of each corner of the envelope.

Therefore, according to this all-color light emitting LED lamp, the three primary colors of light, red, green and blue, are used.
Since the LED chips are arranged in a substantially equilateral triangular shape in a well-balanced manner, it is possible to obtain good all-color light emission with good color mixing, and to protect and surround those LED chips,
In addition, since the surrounding enclosures to be sealed are formed in a substantially equilateral triangular prism shape having a substantially minimum cross-sectional area corresponding to their arrangement, it is possible to efficiently spread and arrange them at high density. it can. Therefore, a clear and high-luminance light-emitting display surface suitable for a color television or the like can be formed.

According to a second aspect of the present invention, there is provided a display device in which a plurality of the above-mentioned all-color emitting LED lamps are arranged.
The lamp is substantially composed of a set of substantially regular hexagonal unit dots in which the lamps are arranged in a ring, and the six full-color light emitting LED lamps forming the unit dots have the side surfaces of the envelope abutted on each other. In this state, one of the all-color emitting LED lamps adjacent to each other is arranged in a ring in a relationship rotated by 180 degrees relative to the other.

Therefore, according to this display device, the six all-color light emitting LED lamps arranged adjacent to each other in a substantially regular hexagonal shape in a specific relationship are formed as unit dots, so that the red, green, and blue colors are used. The light emitting display surfaces can be obtained in which the LED chips of each color are uniformly distributed and well-balanced, and are not arranged adjacent to each other. Therefore, it is possible to obtain a light-emitting display surface that is not only clear, has high brightness, but also has no direction. Further, due to the uniform and well-balanced dispersibility, the reproducibility of a graphic or image including a curve or a curved surface is high, and a more natural curve or curved surface contour can be displayed.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an all-color LED lamp according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of the all-color LED lamp of FIG.
It is sectional drawing along X-ray.

FIG. 3 is a plan view showing the all-color LED lamp of FIG. 1 as viewed from above.

FIG. 4 is a plan view showing a display device formed by arranging the all-color LED lamps of FIG. 1;

FIG. 5 is a perspective view showing an all-color light emitting LED lamp according to a second embodiment of the present invention.

FIG. 6 is a cross-sectional view of the Y-color LED lamp of FIG. 5;
It is sectional drawing along the Y line.

FIG. 7 is a plan view showing the all-color LED lamp of FIG. 5 as viewed from above.

FIG. 8 is a plan view illustrating an all-color LED lamp according to a third embodiment of the present invention when viewed from above.

FIG. 9 is a view showing the Z-axis of the all-color LED lamp of FIG.
It is sectional drawing along the Z line.

[Explanation of symbols]

 10, 20, 30 All-color light emitting LED lamp 11R Red LED chip 11G Green LED chip 11B Blue LED chip 12 Lead frame (lead) 15 Resin mold (enclosure) 16 Lens 21 Common lead frame (lead) 22 Individual lead frame (Lead) 31 Base (outer body) 32 Lead frame (lead) 33 Reflector (outer body) 34 Resin mold (outer body) 100 Display device 100a Unit dot

Claims (2)

[Claims] 1. A red light emitting diode chip that emits red light, a green light emitting diode chip that emits green light, and a blue light emitting diode chip that emits blue light, which are arranged in a substantially equilateral triangular shape at equal intervals in plan view. A lead electrically connected to each of the three light emitting diode chips; and an outer shape formed in a substantially equilateral triangular prism shape corresponding to the arrangement of the three light emitting diode chips. And an outer enclosure surrounding and protecting the periphery of the light emitting diode, and wherein each of the light emitting diode chips is arranged near each corner of the outer enclosure. Color light emitting diode lamp. 2. A display device comprising a plurality of all-color light emitting diode lamps according to claim 1, wherein six all-color light emitting diode lamps are annularly arranged. The six full-color light-emitting diode lamps, which substantially consist of a set of unit dots having a substantially regular hexagonal shape, forming the unit dots, in a state where the side surfaces of the enclosure are in contact with each other, and A display device, wherein one of the all-color light emitting diode lamps adjacent to each other is arranged in an annular shape in a relationship rotated by 180 degrees relative to the other.