KR20080098245A - Transparent light emitting apparatus - Google Patents

Abstract

A transparency light emitting device is provided to improve transparency by making the size of the LED small and improving the transparency of the LED unit. A transparency light emitting device includes a first transparent plate(10) and a second transparent plate(20) separated to be faced with the first transparent plate. A transparent electrode(40) is coated on the side facing the second transparent plate of the first transparent plate. An electrode division unit divides the transparent electrode so that transparent electrode is separated into a plurality of electrode areas(41a,41b). A LED unit(30) having of plurality the LED element(33) in which a first electrode, a second electrode, a fist electrode pad, and a second electrode pad is formed on a part of the adhered wafer(31) to the transparent electrode. A connecting member(34) which is electrically connects the second electrode pad to the electrode area which are separated electrically so that LED unit radiates by the applied power.

Description

Transparent light emitting device {TRANSPARENT LIGHT EMITTING APPARATUS}

1 is a perspective view of a transparent light emitting device according to the present invention,

2 is a cross-sectional view taken along the line II-II of FIG. 1,

3 is a view for explaining the configuration in which the LED light emitting portion is attached to the transparent electrode in the transparent light emitting device according to the present invention,

4 is a view for explaining a transparent light emitting device according to a first embodiment of the present invention,

5 and 6 are views for explaining a transparent light emitting device according to a second embodiment of the present invention,

7 is a view for explaining a transparent light emitting device according to a third embodiment of the present invention,

8 and 9 are views for explaining a transparent light emitting device according to a fourth embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

1: transparent light emitting device 10: first transparent plate

20: second transparent plate 30: LED light emitting unit

31: wafer 32a: first electrode pad

32b: second electrode pad 33: LED device

33a: first electrode 33b: second electrode

34 connection member 40 transparent electrode

41a, 41b: electrode area 70: filler

90: control unit

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transparent light emitting device, and more particularly, to a transparent light emitting device in which the transparency is further improved by reducing the size thereof while improving the transparency of the LED light emitting unit including the LED element.

In general, as an outdoor electronic signboard, an electronic board using a light emitting diode (LED) is widely used.

In this regard, Korean Patent No. 0618941, previously filed and registered by the inventor of the present invention, applies a transparent electrode to a transparent plate of a transparent material, forms a circuit pattern by dividing the transparent electrode, and forms an LED module on the formed circuit pattern. A transparent light emitting device for attaching and emitting light is disclosed.

In addition, Korean Patent Nos. 0618942 and 0618943, which have been previously filed and registered by the inventors of the present invention, disclose a transparent electronic display board that is transparent and thin in thickness while implementing a moving image using a chip LED driven at a low power and having a long life. Doing.

The transparent LED according to the Korean patent forms a circuit pattern for controlling the blinking of a chip LED by depositing a transparent electrode on a transparent transparent plate and forming a circuit pattern by dividing the transparent electrode. Accordingly, the transparent display board according to the Korean patent has a drawback of the conventional display board, that is, its thickness is thick for the processing of the wires on the back and the implementation of the video, and the back is covered with a cover for the wires or black film treatment on the back. The structure for this purpose is to increase the thickness, and to solve the aesthetic disadvantages such as installing a blower for the release of heat generated inside.

However, the Korean patents use an LED module (or a chip LED, hereinafter) in manufacturing a transparent light emitting device or a transparent display board, and there is a concern that transparency may be reduced due to the size of the LED module itself. That is, the LED module attaches the LED element to a package (typically made of Heat-Resistant Polymer) on which a circuit pattern is formed, and surrounds the upper part with a resin or the like to manufacture the LED element. The LED module is not transparent either because the resin or package is not transparent.

Therefore, in the case of using the LED module, when the LED does not emit light in the transparent light emitting device or the transparent display board, the portion in which the LED module is located may be recognized as a dot form and may be recognized as small dots embedded in the transparent light emitting device or the transparent display board. .

Therefore, if the light emitting unit having improved transparency than the LED module is used while using the LED element, the transparency may be improved even when the transparent light emitting device or the transparent light emitting plate is turned off.

Accordingly, it is an object of the present invention to provide a transparent light emitting device which further improves the transparency by reducing the size thereof while improving the transparency of the LED light emitting unit including the LED element.

According to the present invention, the object is the first transparent plate; A second transparent plate spaced apart from the first transparent plate; A transparent electrode applied to a surface of the first transparent plate facing the second transparent plate; An electrode splitter dividing the transparent electrode so that the transparent electrode is divided into a plurality of electrode regions electrically separated from each other; A wafer attached on the transparent electrode, a first electrode pad and a second electrode pad formed on one region of the wafer and electrically separated from each other, and electrically connected to the first electrode pad and the second electrode pad, respectively. A plurality of LED light emitting units having an LED element having a first electrode and a second electrode; The first electrode pad and the second electrode pad of the LED light emitting part may be disposed on at least one pair of the electrode areas electrically separated from each other so that the LED elements of the LED light emitting parts emit light by a power applied through the electrode area. It is achieved by a transparent light emitting device, characterized in that it comprises a connecting member for electrically connecting each.

Here, the wafer of the LED light emitting unit may be attached to the surface of the transparent electrode by a die bonding method.

In addition, the connection member may include a conductive wire.

Wherein the electrode region comprises a plurality of first electrode regions and a plurality of second electrode regions; The first electrode region and the second electrode region are provided in plural to be arranged in a matrix form on the first transparent plate, and at least one of the first electrode regions is adjacent to the four second electrode regions. Disposed on the first transparent plate; The connection member may include a plurality of second signal lines in which the plurality of first electrode regions are formed in a first direction, and the plurality of second electrode regions are formed in a second direction crossing the first direction. A pair of first electrodes electrically connected to the first electrode pad of the LED light emitting part of the LED light emitting part to form a signal line and adjacent to the pair of first electrode areas to which the first electrode pad is connected; A second electrode region is connected to the second electrode pad of the LED light emitting unit; And a control unit for selectively supplying power to the plurality of first signal lines and the plurality of second signal lines so that the LED elements of the plurality of LED light emitters selectively blink.

The controller sequentially turns on one side of the plurality of first signal lines and the plurality of second signal lines, and selectively turns on the other side of the plurality of second signal lines and the plurality of second signal lines. The LED device of the LED light emitting unit may blink.

The electrode splitter may include a plurality of first electrode splitters for dividing the transparent electrodes in a first direction to form a plurality of unit electrode regions in which the transparent electrodes are electrically separated from each other, and each of the unit electrode regions may be electrically connected. A second electrode divider for dividing the unit electrode regions in the first direction to form a separated first electrode region and a second electrode region, and a plurality of third electrodes in which the second electrode regions are electrically separated from each other; A plurality of third electrode dividing portions which divide the second electrode region from one region of the second electrode dividing portion to one side edge region of the first direction of the transparent electrode to form an region; The connection member electrically connects the first electrode pad of the LED light emitter to the first electrode region, and electrically connects the second electrode pad of the LED light emitter to any one of the third electrode regions; Each of the LED light emitters may provide an additional resistance added to the LED element such that a difference between the sheet resistance values of the first electrode region and the third electrode region forming a line for supplying power to each of the LED emitters is compensated for. Further includes; The display apparatus may further include a controller configured to selectively supply power to the first electrode region and the third electrode region so that the LED elements of the plurality of LED light emitters selectively blink.

Here, the LED light emitting unit further includes a protection resistor to protect the LED element; The additional resistance may be added by varying the size of the protection resistor.

In addition, the magnitude of the protection resistance of the LED light emitting part disposed in each unit electrode region is Rpk = Rt-Rsk (where k = 1, 2, ... n, n are disposed in one unit electrode region). The number of the LED light emitting units, Ppk, the protection resistance of the k-th LED light emitting unit, Rsk is the sheet resistance value of the region where the k-th LED light emitting unit is disposed, Rt = Rp + Rs + Ra, Rp and Rs is the sheet resistance in the unit electrode region The protection resistance of the LED light emitting part disposed in the region having the largest value and the sheet resistance of the region, and Ra ≧ 0.

The electrode splitter may further include: a plurality of first electrode splitters for dividing the transparent electrode in a first direction to form a plurality of unit electrode regions in which the transparent electrodes are electrically separated from each other, and the unit electrode regions are electrically separated from each other. A second electrode divider for dividing the unit electrode regions in the first direction to form a first electrode region and a second electrode region; and a first unit region and a first electrode region in which the second electrode regions are electrically separated from each other. A third electrode splitter for dividing the second electrode region in a second direction crossing the first direction to form a second unit region, and the first unit region and the second unit region electrically separated from each other; The first unit area and the second unit area are respectively spaced apart from one area of the second electrode divider from the third electrode divider of the transparent electrode so as to form a plurality of third electrode areas. At least one fourth electrode dividing portion that divides to both side edge regions in a direction to be formed; The connection member electrically connects the first electrode pad of the LED light emitter to the first electrode region and electrically connects the second electrode pad of the LED light emitter to any one of the third electrode regions; Each of the LED light emitters may provide an additional resistance added to the LED element such that a difference between the sheet resistance values of the first electrode region and the third electrode region forming a line for supplying power to each of the LED emitters is compensated for. Further includes; The display apparatus may further include a controller configured to selectively supply power to the first electrode region and the third electrode region to selectively blink the LED elements of the plurality of LED light emitting units.

And, the LED light emitting unit further includes a protection resistor for protecting the LED element; The additional resistance may be added by varying the size of the protection resistor.

In addition, the magnitude of the protection resistor of each of the LED light emitting units disposed in the first unit region is Rpk = Rt-Rsk (where k = 1, 2, ... n, n is one of the first unit regions). The number of the LED light emitting units arranged, Ppk, the protection resistance of the k-th LED light emitting unit, Rsk is the sheet resistance value of the region where the k-th LED light emitting unit is disposed, Rt = Rp + Rs + Ra, Rp and Rs is the first unit The protection resistance of the LED light emitting part disposed in the region having the largest sheet resistance value in the region and the sheet resistance value of the corresponding region, and Ra ≧ 0.

In addition, the magnitude of the protection resistance of each of the LED light emitting units disposed in the second unit region is Rpk = Rt-Rsk (where k = 1, 2, ... n, n is one of the second unit regions). The number of the LED light emitting units disposed, Ppk, the protection resistance of the k-th LED light emitting unit, Rsk is the sheet resistance value of the region where the k-th LED light emitting unit is disposed, Rt = Rp + Rs + Ra, Rp and Rs is the second unit The protection resistance of the LED light emitting part disposed in the region having the largest sheet resistance value in the region and the sheet resistance value of the region, and Ra ≧ 0.

Hereinafter, the transparent light emitting device 1 according to the present invention will be described in detail with reference to the accompanying drawings. Here, the concept of 'transparent' described herein is not limited to the transmission of light 100%, but may be interpreted as a concept that includes a transmittance of a predetermined level or more, that can be recognized as 'transparent'. In addition, in describing the embodiments of the present invention, the same reference numerals may be used for components corresponding to each other, and description thereof may be omitted as necessary.

In the transparent light emitting device 1 according to the present invention, as shown in FIGS. 1 to 3, the first transparent plate 10, the second transparent plate 20, the transparent electrode 40, and the electrode splitter 43 ), LED light emitting unit 30 and the connecting member 34.

The first transparent plate 10 has a plate shape of a transparent material, for example, transparent glass, PC (poly carbonate), or acrylic material. Here, the first transparent plate 10 of the transparent light emitting device 1 according to the present invention has an approximately rectangular plate shape and is made of a transparent glass material as an example.

The second transparent plate 20 is a transparent material having a shape corresponding to the shape of the first transparent plate 10, for example, glass, PC (poly carbonate), or acrylic material, which is a transparent material similar to the first transparent plate 10. Is provided. Here, the second transparent plate 20 is not limited to the same or corresponding plate shape as the first transparent plate 10.

The transparent electrode 40 is deposited and coated on a surface of the first transparent plate 10 that faces the second transparent plate 20. Here, the transparent electrode 40 coated on the first transparent plate 10 is divided into a plurality of electrode regions 41a and 41b electrically separated from each other by the electrode splitter 43. Here, various embodiments in which the transparent electrode 40 is divided into the plurality of electrode regions 41a and 41b by the electrode splitter 43 will be described later.

Herein, the transparent electrode 40 is formed by depositing any one material of indium tin oxide (ITO), indium zinc oxide (IZO), or a liquid polymer on the first transparent plate 10.

The plurality of electrode regions 41a and 41b divided by the electrode splitter 43 form a circuit pattern capable of supplying power to the LED element 33 described later of the LED light emitter 30. Here, the method of dividing the transparent electrode 40 into a plurality of electrode regions 41a and 41b may use chemical etching, physical etching, or laser etching. In an embodiment of the present invention, laser etching is used as an example. do.

The LED light emitting unit 30 is used as a light source of the transparent light emitting device 1 according to the present invention. As shown in FIGS. 2 and 3, the LED light emitting unit 30 according to the present invention includes a wafer 31, a first electrode pad 32a, a second electrode pad 32b, and an LED element 33. It may include.

The wafer 31 is made of a transparent material. Here, the wafer 31 is located at the position where light emission is required in the transparent light emitting device 1 according to the present invention, for example, as shown in FIG. 2, so as to be positioned above the electrode splitter 43. It is attached over two or more electrode regions 41a and 41b divided by 43). Here, in the embodiment of the present invention, the wafer 31 is attached to the transparent electrode 40, that is, by the die bonding method on the surfaces of two or more electrode regions 41a and 41b electrically separated from each other as shown in FIG. To be an example.

Here, in the present invention, the glass wafer 31 is used as the wafer 31 as an example, and a wafer 31 of another form or name that is guaranteed of transparency may be used.

The first electrode pad 32a and the second electrode pad 32b are formed on one surface of the wafer 31 and are formed in one region on the wafer 31 so as to be electrically separated from each other. Here, the first electrode pad 32a and the second electrode pad 32b are preferably made of a transparent material. For example, any one of indium tin oxide (ITO), indium zinc oxide (IZO), and liquid polymer may be used. After the deposition, it may be electrically separated by chemical etching, physical etching, or laser etching. In addition, the first electrode pad 32a and the second electrode pad 32b may be formed on the surface of the wafer 31 through processes such as exposure, nicking deposition, and etching using a photomask pattern.

The LED element 33 operates as a light source of the transparent light emitting device 1 according to the present invention which emits light upon supply of power. Here, the LED element 33 is attached to any one of the surface of the first electrode pad 32a, the second electrode pad 32b, or the wafer 31, and the LED element 33 is formed in FIGS. 2 and 3. One example is to be attached on the electrode pad 32a.

In addition, the LED device 33 includes a first electrode 33a electrically connected to the first electrode pad 32a and a second electrode 33b electrically connected to the second electrode pad 32b. Accordingly, the LED element 33 emits light depending on whether the power is supplied through the electrode regions 41a and 41b and the first electrode pad 32a and the second electrode pad 32b.

Here, the first electrode 33a and the first electrode pad 32a may be electrically connected to each other by a wire bonding method, and the second electrode 33b and the second electrode pad 32b may also be connected by a wire bonding method. Can be interconnected.

The connection member 34 electrically connects the first electrode pad 32a and the second electrode pad 32b of the LED light emitting unit 30 to the electrode regions electrically separated from each other. Accordingly, the power applied through the electrode regions electrically separated from each other is applied to the LED element 33 through the first electrode pad 32a and the second electrode pad 32b so that the LED element 33 can emit light. Will be.

In this case, the connecting member 34 is formed in the form of a conductive wire, and the first electrode pad 32a and the second electrode pad 32b are each electrically connected to the electrode region through a wire bonding method.

Reference numeral 35 in FIGS. 2 and 3 is a zener diode 35 which is a constant voltage diode.

It is possible to further improve the transparency of the transparent light emitting device 1 according to the present invention by improving the transparency of the LED light emitting unit 30 provided with the LED element 33 while making the size smaller as described above. . For example, the conventional LED module (or chip LED has a size of 0.8 ㅧ 1.6mm ~ 5mm ㅧ 5mm, but the LED light emitting unit 30 in the transparent light emitting device 1 according to the present invention is the LED element 33) It is possible to significantly reduce the size to the size of.

Hereinafter, referring to FIG. 4, the transparent electrode 40 of the transparent light emitting apparatus 1 according to the first exemplary embodiment of the present invention is divided into a plurality of electrode regions in which a moving image can be realized, and the plurality of electrode regions described above. The configuration in which the LED light emitter 30 is connected will be described in detail.

The electrode region of the transparent light emitting device 1 according to the first embodiment of the present invention includes a plurality of first electrode regions A and a plurality of second electrode regions B. FIG. Here, the first electrode region A and the second electrode region B are separated from each other by the electrode splitter 43 so as to be arranged in a matrix form.

The first electrode region A and the second electrode region B are alternately disposed on the first transparent plate 10. That is, one first electrode region A is formed to be adjacent to four second electrode regions B, and one second electrode region B is adjacent to four first electrode regions A. It is formed to.

Between the first electrode regions A and the second electrode regions B of the transparent electrode 40 of the first transparent plate 10, and between the first electrode region A and the second electrode region ( B) is in an electrically separated state to form a desired circuit pattern. FIG. 4 illustrates an example in which a boundary separating the first electrode region A and the second electrode region B is formed in a diagonal direction of the first transparent plate 10 having a rectangular shape. Here, in FIG. 4, the first electrode region A and the second electrode region B are each formed in a quadrangular shape, and their vertices are adjacent to each other between the adjacent first electrode regions A. FIG. The sides of the adjacent first and second electrode regions A and B face each other.

On the other hand, the connecting member 34 electrically connects the pair of adjacent first electrode regions A to the first electrode pad 32a of the LED light emitting unit 30. In addition, the connecting member 34 may include a pair of second electrode regions B adjacent to the pair of first electrode regions A to which the first electrode pads 32a are connected, and the second electrode of the LED light emitting unit 30. To the pad 32b. Here, the plurality of LED light emitting portions 30 are connected in the same manner in the lateral direction (hereinafter referred to as "first direction") and in the longitudinal direction (hereinafter referred to as "second direction").

Through the above configuration, the first electrode pad 32a and the first electrode region A of the LED light emitting unit 30 form the first signal lines 1 to 8 in the first direction, and the LED light emitting unit The second electrode pad 32b and the second electrode region B of 30 form second signal lines a to h in the second direction.

Here, the controller 90 shown in FIG. 4 selectively supplies power to the first signal lines 1 to 8 and the second signal lines a to h formed as described above, thereby providing a plurality of LED light emitting units ( Each LED element 33 of 30 can be selectively flashed. For example, the controller 90 sequentially turns on one side of the first signal line 1 to 8 and the second signal line a to h, and the first signal line 1 to 8 and the second signal line. By selectively turning on the other side (a to h) to selectively blink the LED element 33 of the LED light emitting unit 30, the transparent light emitting device 1 according to the present invention can display a video have.

Hereinafter, referring to FIG. 5, the transparent electrode 40 of the transparent light emitting apparatus 1 according to the second exemplary embodiment of the present invention is divided into a plurality of electrode regions in which a moving image can be implemented, and the above-described plurality of electrode regions are described. The configuration in which the LED light emitter 30 is connected will be described in detail.

The electrode splitter 43 of the transparent light emitting device 1 according to the second exemplary embodiment of the present invention includes a first electrode splitter 43_1, a second electrode splitter 43_2, and a third electrode splitter 43_3. It may include.

The first electrode splitter 43_1 vertically aligns the transparent electrode 40 to form a plurality of unit electrode regions UA1, UA2, UA3, and UA4 in which the transparent electrodes 40 are electrically separated. Direction ". In FIG. 5, three first electrode splitters 43_1 form four unit electrode regions UA1, UA2, UA3, and UA4.

The second electrode splitter 43_2 divides each of the unit electrode regions UA1, UA2, UA3, and UA4 in the first direction so that each of the unit electrode regions UA1, UA2, UA3, and UA4 is electrically separated from each other. The electrode region EA1 and the second electrode region EA2 are formed.

The third electrode splitter 43_3 includes a plurality of third electrode areas EA3_a, EA3_b, EA3_c, and EA3_d, in which the second electrode area EA2 is electrically separated from each other and electrically separated from the first electrode area EA1. To form the second electrode region EA2 from one region of the split portion 43_2 of the second electrode 33b to one edge of the transparent electrode 40 in the first direction, that is, the lower edge of FIG. 5. Divide.

In the transparent light emitting device 1 according to the present invention, as shown in FIG. 5, the third electrode splitter 43_3 has a second electrode region EA2 in a 'b' form from one region of the second electrode splitter 43_2. ) As an example.

According to the above configuration, the unit electrode regions UA1, UA2, UA3, and UA4 are electrically separated from each other, and the first electrode region EA1 and the plurality of first electrode regions UA1, UA2, UA3, and UA4 are electrically separated from each other. The third electrode regions EA3_a, EA3_b, EA3_c, and EA3_d are electrically separated from each other.

Here, the second electrode pads 32b of the LED light emitting units 30a, 30b, 30c, and 30d are electrically connected to the third electrode regions EA3_a, EA3_b, EA3_c, and EA3_d, respectively, and each LED light emitting unit The first electrode pads 32a of 30a, 30b, 30c, and 30d are electrically connected to the first electrode region EA1, respectively. According to this configuration, the control unit 90 turns on the first electrode area EA1 in one unit electrode area UA1, UA2, UA3, UA4, and the third electrode areas EA3_a, EA3_b, EA3_c, Flashing of the corresponding LED light emitting units 30a, 30b, 30c, and 30d is controlled according to whether EA3_d is turned on or off.

Accordingly, the control unit 90 blinks the LED light emitting units 30a, 30b, 30c, and 30d provided in the unit electrode regions UA1, UA2, UA3, and UA4 on the first transparent plate 10 in the same manner as described above. As the plurality of LED light emitters 30a, 30b, 30c, and 30d on the first transparent plate 10 blink, the video may be implemented.

On the other hand, the LED light emitting portion (30a, 30b, 30c, 30d) of the transparent light emitting device 1 according to the second embodiment of the present invention is a line for supplying power to each LED light emitting portion (30a, 30b, 30c, 30d) Each LED element 33_1, 33_2, so as to compensate for the difference between the sheet resistance values Rs1, Rs2, Rs3, and Rs4 of the first electrode area EA1 and the third electrode area EA3_a, EA3_b, EA3_c, and EA3_d forming 33_3, 33_4) may be added.

Here, the LED light emitting units 30a, 30b, 30c, and 30d according to the present invention include protection resistors Rp1, Rp2, Rp3, and Rp4 that protect the LED elements 33_1, 33_2, 33_3, and 33_4 from overvoltage or overcurrent. The additional resistance may be added by varying the sizes of the protection resistors Rp1, Rp2, Rp3, and Rp4 of the LED light emitting units 30a, 30b, 30c, and 30d.

FIG. 6 is a diagram illustrating an equivalent circuit of a circuit pattern formed in one unit electrode area UA1, UA2, UA3, or UA4 among the circuit patterns shown in FIG. 5. The LED elements 33_1, 33_2, 33_3, and 33_4 illustrated in FIG. 6 are the LED elements of the LED light emitting units 30a, 30b, 30c, and 30d disposed in one unit electrode region UA1, UA2, UA3, and UA4. 33_1,33_2,33_3,33_4), Rp1, Rp2, Rp3, and Rp4 are protection resistors (Rp1, Rp2, Rp3, Rp4) for each LED element 33_1, 33_2, 33_3, 33_4, and Rs1, Rs2, Rs3 And Rs4 is a first electrode region EA1 forming a circuit pattern for blinking each of the LED elements 33_1, 33_2, 33_3 and 33_4 when power is applied to each of the LED elements 33_1, 33_2, 33_3 and 33_4. The sheet resistance values Rs1, Rs2, Rs3, and Rs4 are formed by the third electrode regions EA3_a, EA3_b, EA3_c, and EA3_d.

Here, the arrangement of the LED light emitting units 30a, 30b, 30c, and 30d disposed in one unit electrode region UA1, UA2, UA3, and UA4 shown in FIG. 5 and the respective LED elements 33_1, shown in FIG. Assuming that the arrangement of 33_2, 33_3, 33_4 is the same, the relationship between the sheet resistance values Rs1, Rs2, Rs3, and Rs4 is expressed by Equation 1 below.

[Equation 1]

Rs1> Rs2> Rs3> Rs4

Here, when the total resistance applied to the LED element 33_1 applied to Rs1 is Rt, the value of Rt is expressed by Equation 2 below.

[Equation 2]

Rt = Rp1 + Rs1

At this time, the protection resistors Rp2, Rp3, Rp4 added to the remaining LED elements 33_2, 33_3, 33_4 so that the resistances applied to the respective LED elements 33_1, 33_2, 33_3, 33_4 are equal to each other. Equation 3].

[Equation 3]

Rp2 = Rt-Rs2

Rp3 = Rt-Rs3

Rp4 = Rt-Rs4

Here, the sheet resistance values Rs1, Rs2, Rs3, and Rs4 applied to the LED elements 33_1, 33_2, 33_3, and 33_4 may be calculated through measurement, and the calculated sheet resistance values Rs1, Rs2, Rs3, and Rs4 may be calculated. The size of each protection resistor Rp1, Rp2, Rp3, and Rp4 may be used to equalize the total resistance on the circuit for blinking each of the LED elements 33_1, 33_2, 33_3, and 33_4.

As a result, the resistance across the LED elements 33_1, 33_2, 33_3, 33_4 becomes equal, so that the LEDs 33_1, 33_2, 33_3, 33_4 emit light with the same brightness for the same size power supply. Therefore, uniform brightness can be provided.

On the other hand, the resistance value Rt according to [Equation 2] can also be calculated by the following [Equation 4].

[Equation 4]

Rt = Rp1 + Rs1 + Ra

Here, Ra adjusts the Rt value to facilitate the calculation of the Rp2, Rp3, and Rp4 values or the addition of the resistance value as an integer, or the Rt in each unit electrode region UA1, UA2, UA3, UA4 is different. The variable to compensate for this is a natural number greater than or equal to zero.

Hereinafter, referring to FIG. 7, the transparent electrode 40 of the transparent light emitting device 1 according to the third exemplary embodiment of the present invention is divided into a plurality of electrode regions in which a moving image can be implemented, and the above-described plurality of electrode regions. The configuration in which the LED light emitter 30 is connected will be described in detail.

As shown in FIG. 7, the electrode splitter 43 of the transparent light emitting device 1 according to the third exemplary embodiment of the present invention may include a first electrode splitter 43_1a, a second electrode splitter 43_2a, The third electrode splitter 43_3a and the fourth electrode splitter 43_4a may be included.

The first electrode splitter 43_1a divides the transparent electrode 40 in the first direction to form the plurality of unit electrode regions UA1a, UA2a, UA3a, and UA4a in which the transparent electrodes 40 are electrically separated. In FIG. 7, three first electrode splitters 43_1a form four unit electrode regions UA1a, UA2a, UA3a, and UA4a.

The second electrode splitter 43_2a is configured to form the first electrode region EA1a and the second electrode region EA2a in which the unit electrode regions UA1a, UA2a, UA3a, and UA4a are electrically separated from each other. UA1a, UA2a, UA3a and UA4a are divided in the first direction.

The third electrode splitter 43_3a crosses the second electrode region EA2a with the first direction so as to form a first unit region and a second unit region in which the second electrode region EA2a is electrically separated from each other. Direction (horizontal direction in FIG. 7).

The fourth electrode splitter 43_4a includes a plurality of third electrode regions EA3_aa, EA3_ba, wherein the first unit region and the second unit region are electrically separated from each other and electrically separated from the first electrode region EA1a. The first unit region and the second unit region are formed to be spaced apart from one region of the second electrode dividing portion 43_2a from the third electrode dividing portion 43_3a of the transparent electrode 40 so as to form EA3_ca and EA3_da. Split to both edge regions.

That is, as shown in FIG. 7, the fourth electrode splitter 43_4a dividing the first unit region into a plurality of third electrode regions EA3_aa, EA3_ba, EA3_ca, and EA3_da includes a second electrode splitter 43_2a. The fourth electrode splitter 43_4a dividing the first unit region in an inverted '-' shape from one region of the second region, and dividing the second unit region into a plurality of third electrode regions EA3_aa, EA3_ba, EA3_ca, and EA3_da. ) Divides the second unit region in a '-' shape from one region of the second electrode splitter 43_2a.

According to the above configuration, the power connection to the third electrode regions EA3_aa, EA3_ba, EA3_ca, EA3_da is made in the upper and lower edge regions of the first transparent plate 10 and the first electrode region EA1a. Power supply connection is made in the upper or lower edge region of the first transparent plate 10.

Here, an additional resistance (for example, as described above) added to the LED elements 33_1, 33_2, 33_3, 33_4 (described in the configuration corresponding to FIG. 6) of each of the LED light emitting units 30a, 30b, 30c, and 30d. The size of the protection resistors Rp1, Rp2, Rp3, and Rp4 is the same as the method of determining the sizes of the protection resistors Rp1, Rp2, Rp3, and Rp4 in the circuit patterns shown in FIGS. Used.

Hereinafter, referring to FIGS. 8 and 9, when the transparent light emitting device 1 according to the fourth embodiment of the present invention is used as a billboard or an illumination device by blinking the LED light emitting unit 30 rather than an implementation of a video, An example in which the transparent electrode 40 is divided into electrode regions will be described in detail.

The electrode region divided by the electrode dividing unit 43 of the transparent light emitting device 1 according to the fourth embodiment of the present invention forms a circuit pattern for supplying power to the LED light emitting unit 30. FIG. 8 illustrates an example in which a circuit pattern in which four electrode regions 41a, 41b, 41c, and 41d can supply power in series to the LED light emitting unit 30 is formed. FIG. 9 illustrates two electrode regions ( 41a 'and 41b' show an example in which a circuit pattern for supplying power to the LED light emitting unit 30 in parallel is formed.

Here, the LED light emitting units 30a, 30b, 30c, and 30d of the transparent light emitting apparatus 1 according to the second, third and fourth embodiments of the present invention described above are attached to the transparent electrode 40. The configuration may have a configuration as shown in FIG.

Referring back to FIG. 2, the transparent light emitting device 1 according to the present invention may further include a filler 70 filled between the first transparent plate 10 and the second transparent plate 20. . Here, the filler 70 is filled between the first transparent plate 10 and the second transparent plate 20 to protect the LED light emitting unit 30 and the like damage, the first transparent plate 10 and the second transparent By attaching the plate 20 spaced apart at regular intervals, it is possible to produce a full glass. Here, the filler 70 according to the present invention may include any one of a PVB film, an EVA film, and a resin (resin) liquid filler.

Meanwhile, in the present specification, the present invention is referred to as 'transparent light emitting device 1', but when the 'transparent light emitting device 1' according to the present invention is possible to implement a video, it is named as 'transparent light board'. Of course it can be.

BRIEF DESCRIPTION OF THE DRAWINGS The drawings attached to this specification clearly show some of the technical ideas included in the present invention, and modifications that can be easily inferred by those skilled in the art within the scope of the technical idea included in the specification and drawings of the present invention. It is obvious that both and specific embodiments are included in the scope of the technical idea of the present invention.

According to the present invention, there is provided a transparent light emitting device capable of further improving the transparency by reducing the size thereof while improving the transparency of the LED light emitting unit including the LED element.

Claims (12)

A first transparent plate; A second transparent plate spaced apart from the first transparent plate; A transparent electrode applied to a surface of the first transparent plate facing the second transparent plate; An electrode splitter dividing the transparent electrode so that the transparent electrode is divided into a plurality of electrode regions electrically separated from each other; A wafer attached on the transparent electrode, a first electrode pad and a second electrode pad formed on one region of the wafer and electrically separated from each other, and electrically connected to the first electrode pad and the second electrode pad, respectively. A plurality of LED light emitting units having an LED element having a first electrode and a second electrode; The first electrode pad and the second electrode pad of the LED light emitting part may be disposed on at least one pair of the electrode areas electrically separated from each other so that the LED elements of the LED light emitting parts emit light by a power applied through the electrode area. Transparent light emitting device, characterized in that it comprises a connecting member for electrically connecting each. The method of claim 1, The wafer of the LED light emitting unit is a transparent light emitting device, characterized in that attached to the surface of the transparent electrode by a die bonding method. The method of claim 2, The connection member is a transparent light emitting device, characterized in that it comprises a conductive wire. The method according to any one of claims 1 to 3, The electrode region comprises a plurality of first electrode regions and a plurality of second electrode regions; The first electrode region and the second electrode region are provided in plural to be arranged in a matrix form on the first transparent plate, and at least one of the first electrode regions is adjacent to the four second electrode regions. Disposed on the first transparent plate; The connection member may include a plurality of second signal lines in which the plurality of first electrode regions are formed in a first direction, and the plurality of second electrode regions are formed in a second direction crossing the first direction. A pair of first electrodes electrically connected to the first electrode pad of the LED light emitting part of the LED light emitting part to form a signal line and adjacent to the pair of first electrode areas to which the first electrode pad is connected; A second electrode region is connected to the second electrode pad of the LED light emitting unit; And a control unit selectively supplying power to the plurality of first signal lines and the plurality of second signal lines so that the LED elements of the plurality of LED light emitting parts selectively blink. The method of claim 4, wherein The control unit sequentially turns on any one side of the plurality of first signal lines and the plurality of second signal lines, and selectively turns on the other side of the plurality of second signal lines and the plurality of second signal lines and the LEDs. Transparent light emitting device, characterized in that for blinking the LED element of the light emitting portion. The method according to any one of claims 1 to 3, The electrode splitter includes a plurality of first electrode splitters for dividing the transparent electrode in a first direction to form a plurality of unit electrode regions in which the transparent electrodes are electrically separated from each other, and a plurality of first electrode dividers electrically separated from each other. A second electrode splitter for dividing the unit electrode regions in the first direction to form a first electrode region and a second electrode region, and a plurality of third electrode regions in which the second electrode regions are electrically separated from each other; A plurality of third electrode dividing portions which divide the second electrode region from one region of the second electrode dividing portion to one side edge region of the first direction of the transparent electrode; The connection member electrically connects the first electrode pad of the LED light emitter to the first electrode region, and electrically connects the second electrode pad of the LED light emitter to any one of the third electrode regions; Each of the LED light emitters may provide an additional resistance added to the LED element such that a difference between the sheet resistance values of the first electrode region and the third electrode region forming a line for supplying power to each of the LED emitters is compensated for. Further includes; And a controller for selectively supplying power to the first electrode region and the third electrode region so that the LED elements of the plurality of LED light emitters selectively blink. The method of claim 6, The LED light emitting unit further includes a protection resistor for protecting the LED element; The additional resistance is a transparent light emitting device, characterized in that added by varying the size of the protection resistance. The method of claim 7, wherein A magnitude of the protection resistance of the LED light emitting unit disposed in each unit electrode region is Rpk = Rt-Rsk (where k = 1, 2, ... n, n are the LEDs disposed in one unit electrode region). The number of light emitting units, Ppk, the protection resistance of the kth LED light emitting unit, Rsk is the sheet resistance value of the region where the kth LED light emitting unit is disposed, and Rt = Rp + Rs + Ra, Rp and Rs are the sheet resistance values in the unit electrode region. And a protection resistance of the LED light emitting part disposed in the largest area and a sheet resistance value of the corresponding area, and Ra≥0. The method according to any one of claims 1 to 3, The electrode splitter includes a plurality of first electrode splitters for dividing the transparent electrode in a first direction to form a plurality of unit electrode regions in which the transparent electrodes are electrically separated from each other, and a plurality of first electrode dividers electrically separated from each other. A second electrode divider for dividing the unit electrode regions in the first direction to form a first electrode region and a second electrode region; a first unit region and a second unit in which the second electrode regions are electrically separated from each other; A third electrode splitter for dividing the second electrode region in a second direction crossing the first direction to form a region, and a plurality of first electrically separated from the first unit region and the second unit region, respectively. The first unit area and the second unit area are spaced apart from the third electrode divider of the transparent electrode from one region of the second electrode divider to form a third electrode region, respectively. At least one fourth electrode splitter dividing up to both edge regions in the direction; The connection member electrically connects the first electrode pad of the LED light emitter to the first electrode region and electrically connects the second electrode pad of the LED light emitter to any one of the third electrode regions; Each of the LED light emitters may provide an additional resistance added to the LED element such that a difference between the sheet resistance values of the first electrode region and the third electrode region forming a line for supplying power to each of the LED emitters is compensated for. Further includes; And a control unit for selectively supplying power to the first electrode region and the third electrode region so that the LED elements of the plurality of LED light emitters selectively blink. The method of claim 9, The LED light emitting unit further includes a protection resistor for protecting the LED element; The additional resistance is a transparent light emitting device, characterized in that added by varying the size of the protection resistance. The method of claim 10, A magnitude of the protection resistor of each of the LED light emitting units disposed in the first unit region is Rpk = Rt-Rsk (where k = 1, 2, ... n, n are disposed in the first unit region) The number of the LED light emitting units, Ppk, the protection resistance of the k-th LED light emitting unit, Rsk is the sheet resistance value of the region where the k-th LED light emitting unit is disposed, Rt = Rp + Rs + Ra, Rp and Rs in the first unit area And a protection resistance of the LED light emitting part arranged in the region having the largest sheet resistance value and a sheet resistance value of the corresponding region, wherein Ra≥0. The method of claim 10, A magnitude of the protection resistance of each LED light emitting unit disposed in the second unit region is Rpk = Rt-Rsk (where k = 1, 2, ... n, n are disposed in one second unit region) The number of the LED light emitting units, Ppk, the protection resistance of the k-th LED light emitting unit, Rsk is the sheet resistance value of the region where the k-th LED light emitting unit is disposed, Rt = Rp + Rs + Ra, Rp and Rs in the second unit area And a sheet resistance value of the LED light emitting unit disposed in the region having the largest sheet resistance value, and a sheet resistance value of the region, wherein Ra≥0.

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