TWM566832U - Led planar light source device and display - Google Patents

Abstract

A LED (Light Emitting Diode) planar light source device includes at least one first substrate, at least one power transmitting unit and at least one LED module. The first substrate is transparent. The power transmitting unit is connected to one edge of the first substrate and wirelessly transmits at least one AC (Alternating Current) signal with a frequency. The LED module is disposed on one side of the first substrate and includes a power receiving unit, a DC-AC (Direct Current to Alternating Current) converting unit and a plurality of LED units. The power receiving unit receives the AC signal. The AC signal is output from the power receiving unit into the DC-AC converting unit, and the AC signal is converted to a DC power by the DC-AC converting unit. The DC power is provided for the LED units. Therefore, it is beneficial for the LED planar light source device to light from dual sides and flexibly adjust the size thereof.

Description

Light-emitting diode planar light source device and display

The present invention relates to a LIGHT EMITTING DIODE (LED) planar light source device and display, and more particularly to a wirelessly powered light emitting diode planar light source device and display.

The light-emitting diode has the advantages of power saving and flexible configuration, so that the light-emitting diode is gradually applied to various electronic devices. Furthermore, the light-emitting diodes are mostly point light source types, so it is required to be a planar light source by connecting a plurality of light-emitting diodes in series, and the conventional light-emitting diode planar light source is usually disposed in an opaque circuit. The plate allows the light-emitting diode planar light source to be oriented only in a single illumination direction.

However, the single illuminating direction characteristic limits the application range of the illuminating diode planar light source, and there is a need in the market to develop various sizes of illuminating diode planar light sources for use in different sized electronic devices or installation spaces, once when illuminating two The polar planar light source is intended to be replaced for other uses, and may also be forced to be discarded because the new installation space is incompatible.

Therefore, how to promote the flexible and flexible application of the light-emitting diode planar light source has become a development focus in the market.

The invention provides a light-emitting diode planar light source device and a display, which supply power of the light-emitting diode module by wireless power supply, thereby facilitating assembly or pivotal connection between the light-emitting diode modules to have two-sided illumination And the application advantages of flexible size adjustment.

According to the present invention, a light emitting diode planar light source device includes at least a first substrate, at least one power emitting unit, and at least one light emitting diode module. The first substrate is transparent. The power transmitting unit is connected to one side of the first substrate and wirelessly transmits at least one AC signal, and the AC signal has a frequency. The LED module is disposed on one side of the first substrate and includes a power receiving unit, an AC/DC converting unit, and a plurality of LED units. The power receiving unit receives the AC signal. The AC signal is output from the power receiving unit to the AC/DC converting unit, and the AC signal is converted into a DC power source by the AC/DC converting unit. A DC power source is used to supply the light emitting diode unit. Thereby, the light-emitting diode planar light source device can emit light on both sides.

According to the foregoing light emitting diode planar light source device, the number of the first substrates may be at least two, and the first substrate is assembled and connected.

According to the foregoing light-emitting diode planar light source device, wherein the number of power-emitting units can be at least two and the same as the number of the first substrate, each power-emitting unit is connected to the side of the corresponding first substrate, and the power-emitting unit Assemble the connection.

According to the foregoing light-emitting diode planar light source device, the light-emitting diode unit can be divided into at least two light groups, each light group having a light color, and the two light colors are different from each other.

According to the foregoing light-emitting diode planar light source device, wherein the AC signal emitted by the power transmitting unit may be at least two, the two frequencies of the two AC signals are different from each other, and the two light groups respectively correspond to the two AC signals. With controlled illumination.

According to the foregoing light-emitting diode planar light source device, wherein the number of power transmitting units may be at least two, the two frequencies of the two power transmitting units are different from each other, and the two light groups respectively correspond to the two alternating current signals. Controlled illumination.

The light emitting diode planar light source device may further include at least one second substrate that is transparent and disposed in parallel with the first substrate, and the light emitting diode module is interposed between the first substrate and the second substrate.

According to the foregoing light-emitting diode planar light source device, wherein a light-emitting direction of a portion of the light-emitting diode unit may face the first substrate, and another portion of the light-emitting diode unit may emit light away from the first substrate.

The above-described light-emitting diode planar light source device facilitates the generation of a desired luminescent color by the light-emitting diode planar light source device through a simple interface.

According to the present invention, there is further provided a display comprising the above-mentioned light emitting diode planar light source device and at least one display film. The display film is disposed on the other side of the first substrate of the light emitting diode planar light source device, and the display film is connected Receive image signals to display images. Thereby, the light-emitting diode planar light source device 100 can be used as a backlight of the display 800.

According to the foregoing display, wherein the light emitting direction of a portion of the light emitting diode unit may be toward the first substrate, and the light emitting direction of the other portion of the light emitting diode unit may be away from the first substrate. Thereby, the two sides of the display can have different applications.

100‧‧‧Lighting diode planar light source device

110‧‧‧First substrate

120‧‧‧second substrate

130, 230, 330, 430, 530, 630‧‧‧ power transmission unit

135‧‧‧ Shell

136, 137, 138‧‧‧ assembly structure

140‧‧‧Power Expansion Unit

150, 250, 350, 450, 550, 650‧‧‧Lighting diode modules

160‧‧‧Power receiving unit

170‧‧‧AC and DC conversion unit

180, 180r, 180g, 180b, 180r1, 180g1, 180b1, 180r2, 180g2, 180b2‧‧‧Lighting diode unit

191, 192, 193, 194‧‧‧ color blocks

800‧‧‧ display

809‧‧‧ display film

D1, d2‧‧‧Lighting direction

1 is a schematic view of a light-emitting diode planar light source device according to a first embodiment of the present invention; FIG. 2 is a block diagram of a light-emitting diode module of the first embodiment; and FIG. 3 is a first embodiment; FIG. 4 is a schematic side elevational view of the light emitting diode module of FIG. 3; FIG. 5 is a schematic view showing the power transmitting unit of the first embodiment; The figure shows a schematic view of the display of the second embodiment of the present invention; and FIG. 7 shows another schematic view of the display of the second embodiment.

Please refer to FIG. 1 , which is a schematic diagram of a light emitting diode planar light source device 100 according to a first embodiment of the present invention. As can be seen from FIG. 1 , the LED device 100 includes a first substrate 110 , power emitting units 130 , 230 , 330 , 430 , 530 , and 630 , and LED modules 150 , 250 , 350 , 450 , 550 . 650. In addition, according to the novel light-emitting two The polar planar light source device may be a visible light source or an invisible light source, wherein the invisible light source may be a far infrared light source, an ultraviolet light source, or the like, and is not limited thereto. In the first embodiment, the light-emitting diode planar light source device 100 is a visible light source.

Please refer to FIG. 2 , which is a block diagram of the LED module 150 of the first embodiment. As can be seen from FIGS. 1 to 2, the first substrate 110 is transparent. The power transmitting unit 130 is connected to the side of the first substrate 110 (not otherwise labeled) and wirelessly transmits an alternating current signal having a frequency. The LED module 150 is disposed on one surface of the first substrate 110 and includes a power receiving unit 160, an AC/DC converting unit 170, and a plurality of LED units 180. The power receiving unit 160 receives an AC signal. The AC signal is output from the power receiving unit 160 to the AC/DC converting unit 170, and the AC signal is converted into a DC power source by the AC/DC converting unit 170. A direct current power source is used to supply the light emitting diode unit 180. Therefore, the light-emitting diode planar light source 100 has a single light-emitting direction (such as the light-emitting direction d2 in FIG. 1 ), and the light-emitting diode planar light source device 100 has both the light-emitting direction d1 and D2, even more illuminating directions. Furthermore, the light-emitting diode planar light source device 100 can be applied as a window, and the size of the components in the light-emitting diode module can be small and the connecting wires can be close to the fine transparent, and the light-emitting diode planar light source device 100 is outwardly illuminated (lighting) The direction d2) can be used as an advertisement billboard, so that the light-emitting diode planar light source device 100 is not seen inward, and it is possible to prevent external personnel from peeking.

Further, the power transmitting unit 130 may include an oscillating circuit unit, a power amplifier, a transmitting antenna, and the like (not shown) disposed on the circuit board, and the circuit board may be a hard board or a soft board (flexible circuit board), and the power supply emission Unit 130 can be electrically powered by a battery or connection chamber. In addition, the structure of the transmitting antenna may be a coil applied to the near-field transmission or an antenna applied to the far-field transmission, and the frequency and power of the AC signal transmitted by the transmitting antenna may be visually transmitted (in relation to the size of the first substrate 110). Make a better choice. Further, the transmitting antenna may also be a pivoting antenna, that is, the structural shape of the transmitting antenna may be adjusted to achieve a suitable frequency, directivity, and the like. The frequency of the AC signal can be in the UHF or HF band, which in turn can be in the kHz, MHz or GHz class.

Furthermore, the power receiving unit 160 of the LED module 150 can include a receiving antenna, a filtering unit, and the like (not shown), and the receiving antenna receives the AC signal transmitted by the transmitting antenna, and can be correspondingly applied to the near field transmission. The coil is either an antenna used for far-field transmission. Specifically, the AC/DC converting unit 170 may be formed by combining one or more of a diode, a transistor, an integrated circuit, and a passive component to convert the AC signal from the AC/DC converting unit 170 to a DC power source to supply the LED unit. 180.

As can be seen from FIG. 1, the number of the first substrates may be at least two, and the first substrates are assembled or pivoted to be connected. Therefore, since the LED module on the first substrate does not need to be additionally connected to the outside by a physical power line or uses a battery, the size of the LED device 100 can be adjusted according to application requirements, and the application is also eliminated. The inconvenience of replacing the battery during the curtain opening of the large-sized outer wall also helps the light-emitting diode planar light source device 100 to be assembled into another size when it is changed for another use, and is compatible with the new installation space for continued use. Specifically, the number of the first substrates of the first embodiment is six (one of which is the first substrate 110, and the other five are not separately labeled), and the six first substrates have an assembled structure (such as a groove and a convex portion). Etc. but not limited to) assembly or pivot Hehe. The LED modules 150, 250, 350, 450, 550, and 650 are respectively disposed on one surface of the six first substrates and each include a power receiving unit, an AC/DC converting unit, and a plurality of LED units, wherein the LEDs are The body modules 150, 250, 350, 450, 550, 650 may be identical or different from one another, and the specific embodiments thereof may be as described in the relevant paragraphs below.

The number of the power transmitting units of the first embodiment may be at least two and the same as the number of the first substrates. Specifically, the number of power transmitting units of the first embodiment is six (ie, the power transmitting units 130, 230, 330) 430, 530, 630), and the same number as the first substrate, each power transmitting unit is connected to the side of the corresponding first substrate (for example, the side of the first substrate 110 in which the power transmitting unit 130 is connected in FIG. 1) And the power transmitting units 130, 230, 330, 430, 530, 630 are assembled or pivoted to be connected, wherein the power transmitting units 130, 230, 330, 430, 530, 630 may be the same or different from each other, and DETAILED DESCRIPTION OF THE INVENTION The details are as described in the relevant paragraphs below. In addition, according to the light-emitting diode planar light source device (not shown) of the present invention, the number of power transmitting units and the number of the first substrate may be a multiple of 2, or may be different.

As shown in FIG. 1 , the LED device 100 may further include at least one power expansion unit 140 configured to cooperate with at least one of the power transmission units 130 , 230 , 330 , 430 , 530 , and 630 . The power expansion unit 140 can have different structural shapes, thereby improving the assembly flexibility of the LED planar light source device 100, and the power expansion unit 140 does not have the function of the power transmission unit.

Please refer to FIG. 3 , which illustrates a schematic diagram of the LED module 150 of the first embodiment. As can be seen from FIG. 3, the light-emitting diode unit 180 is divided into three light groups, each light group has a light color, and the three light colors are different from each other, thereby providing conversion and combined elasticity of the light-emitting color of the light-emitting diode planar light source device 100. Specifically, the complex LED unit 180 is further divided into LED units 180r, 180g, and 180b, and the LED unit 180r belongs to a red group and its color is red, and the LED unit 180g It belongs to the green group and its light color is green. The light-emitting diode unit 180b belongs to the blue light group and its light color is blue. Furthermore, the distribution of the red light group, the green light group, and the blue light group (that is, the light emitting diode units 180r, 180g, and 180b, respectively) are not limited, and the red light group, the green light group, and the blue light group are not limited. Can be distributed in three independent blocks, red light group, green light group, blue light group can also be staggered (as shown in Figure 3), and then one light-emitting diode unit 180r, green light group in the red light group One of the light emitting diode units 180g and one of the light emitting diode units 180b of the blue light group may be closely adjacent to form one light emitting unit group, and the light emitting diode units 180r, 180g, 180b in the one light emitting unit group may have The assembled structure (such as grooves, protrusions, etc., but not limited thereto) is assembled or pivoted, so that one light-emitting unit group can transmit different intensity of three light colors of the included light-emitting diode units 180r, 180g, and 180b. Various desired colors are formed, and the LED module 150 can form a planar light source of a desired color from a plurality of light emitting unit groups thereon.

Referring to FIG. 1 , the power transmitting unit 130 can generate three kinds of alternating current signals, and the three alternating current signals each have different frequencies. The light emitting diode units 180r, 180g, and 180b respectively correspond to the three alternating current signals. Controlled illumination. For example, the user can avoid using a more complicated software programming interface, and the simple hardware interface controls the presence or absence of the AC signal of the power transmitting unit 130 or the magnitude of the transmitting power, so that the power receiving unit 160 receives the three communications. The signals respectively have different powers, and the ratio of the luminous intensity between the LED units 180r, 180g, and 180b is controlled by the AC/DC conversion unit 170, so that the LED module 150 exhibits a desired color of illumination. In addition, the power transmitting unit 130 can use three transmitting signals to transmit three alternating current signals of different frequencies, and three transmitting antennas can also respectively emit three alternating current signals of different frequencies. The power receiving unit 160 can receive three AC signals of different frequencies by using one receiving antenna, and can also receive three AC signals of different frequencies by using three receiving antennas.

For example, the power transmitting units 130, 230, 330, 430, 530, and 630 each transmit three different frequency AC signals, and the LED modules 150, 250, 350, 450, 550, and 650 each have a red light group. The green light group and the blue light group, the light emitting diode modules 150, 250, 350, 450, 550, and 650 are in one-to-one correspondence with the power transmitting units 130, 230, 330, 430, 530, and 630 and are controlled to emit light.

With continued reference to FIG. 1 , the LED components 180r, 180g, and 180b respectively corresponding to the three AC signals for controlled illumination may be implemented in another manner. For example, the power transmitting units 130, 330, and 530 each transmit an alternating current signal of a frequency, and the three frequencies are different. The light emitting diode units 180r, 180g, and 180b are respectively corresponding to the power transmitting units 130, 330, and 530. The alternating signal is controlled to emit light, thereby The ratio of the luminous intensity between the light emitting diode units 180r, 180g, and 180b causes the light emitting diode module 150 to exhibit a desired light emitting color.

For example, the LED modules 150, 250, 350, 450, 550, and 650 each have a red light group, a green light group, and a blue light group, and the light emitting diode modules 150, 250, 350, 450, and 550 All the red light groups in the 650 respectively correspond to the alternating current signals emitted by the power transmitting unit 130 to control the red light, and all the green light groups in the light emitting diode modules 150, 250, 350, 450, 550, and 650 respectively Corresponding to the alternating current signal emitted by the power transmitting unit 330, the green light is controlled to emit light, and all the blue light groups in the light emitting diode modules 150, 250, 350, 450, 550, 650 respectively correspond to the alternating current signals emitted by the power transmitting unit 530. The blue light is controlled to be emitted, and the power transmitting units 230, 430, and 630 may be additionally transmitted to transmit an alternating current signal to assist in adjusting the luminous intensity of the red light group, the green light group, or the blue light group.

Please refer to FIG. 4 , which is a side elevational view of the LED module 150 in FIG. 3 . As shown in FIG. 1 and FIG. 4 , the LED device 100 can further include at least one second substrate 120 that is transparent and disposed in parallel with the first substrate 110 . The LED module 150 is disposed on the LED substrate 150 . Between the first substrate 110 and the second substrate 120, wherein the second substrate 120 can be a transparent hard board, a soft board or a thin film, which helps reduce the possibility of damage of the LED module 150 and can expand the application range thereof. . Furthermore, the power emitting unit 130 is connected to the side of the first substrate 110 and the side of the second substrate 120 (not otherwise labeled). In addition, the LED modules 250, 350, 450, 550, and 650 can also be respectively disposed between the corresponding first substrate and the corresponding second substrate, and the second substrates can be assembled or pivoted with each other. To connect.

Referring to FIG. 5, a schematic diagram of the power transmitting unit 130 of the first embodiment is shown. As shown in FIG. 5, the power transmitting unit 130 may further include a housing 135 that houses the circuit board and the oscillating circuit unit, the power amplifier, the transmitting antenna, and the like (not shown), and the housing 135 includes an assembly structure 136. 137 and 138. Specifically, the assembly structure 136 is a groove and the number is two. The first substrate 110 and the second substrate 120 can be respectively embedded in the two assembly structures 136 to be assembled and connected with the power source emitting unit 130. The assembly structure 137 is a screw hole, and the assembly structure 138 is a screw. The assembly structure 138 can be simultaneously inserted into the assembly structure 137 and the assembly structure (not shown) in the form of a screw hole on the power transmission unit 330 to connect the power transmission units 130 and 330. Assemble or pivot to connect. In addition, the power transmitting units 130, 230, 330, 430, 530, 630 and the power expansion unit 140 may be assembled or pivoted in the manner described in this paragraph, but not limited thereto.

As can be seen from FIG. 4, the light-emitting diode unit 180 can be further divided into the light-emitting diode units 180r1, 180g1, 180b1, 180r2, 180g2, and 180b2, and the light-emitting diode unit 180 (180r1, 180g1, 180b1) emits light. The direction d1 may be toward the first substrate 110 (ie, the light source is emitted from the first substrate 110), and the light emitting direction d2 of the other portion (180r2, 180g2, 180b2) of the light emitting diode unit 180 may be away from the first substrate 110 (ie, from the second The substrate 120 emits a light source, that is, the light-emitting directions d1 and d2 are opposite in direction, so that the two sides of the light-emitting diode planar light source device 100 have different applications. According to another embodiment of the present invention (not shown), at least one of the light emitting diode units may be illuminated on both sides.

Please refer to FIG. 6, which illustrates a schematic diagram of a display 800 of a second embodiment of the present invention. As can be seen from FIG. 6, the display 800 includes the light-emitting diode planar light source device 100 and the display film 809 according to the first embodiment. The display film 809 is disposed on the other surface of the six first substrates of the light-emitting diode planar light source device 100 (corresponding to the light-emitting direction d1), and the display film 809 receives the image signal to display the image. Thereby, the light-emitting diode planar light source device 100 can be used as a backlight of the display 800.

Please refer to FIG. 7, which illustrates another schematic diagram of the display 800 of the second embodiment. It can be seen from FIGS. 6 and 7 that, in particular, the light-emitting direction d1 of a part of the light-emitting diode unit 180 can be directed toward the first substrate (ie, the light source is emitted from the six first substrates), as shown in FIG. The red light group, the green light group and the blue light group are densely staggered and have the same luminous intensity, and the whole is regarded as a white light color. The light emitting direction d2 of the other portion of the light emitting diode unit 180 may be away from the first substrate (ie, the light source is emitted from the six second substrates), as shown in FIG. 7, and the red light group, the green light group, and the blue light group are dense. The staggered distribution and the illuminating intensity can be different, and the whole is regarded as a single uniform desired illuminating color. Thereby, the display 800 can be applied as a window, and the outward side of the display 800 (light-emitting direction d2) can be used as an advertising billboard, so that the display 800 is not seen inward, and the personnel can be prevented from peeking, and the display 800 is inward. A display film 809 is provided on one side (light-emitting direction d1) to receive an image signal to display an image, so that the display 800 has a television function.

Furthermore, as shown in FIG. 7, the outward side (light-emitting direction d2) of the display 800 can be further divided into color blocks 191, 192, 193, 194, and the color block 191 includes the first red light group and the first green color. Light group, first blue group, color Color block 191 is controlled by a first set of three different frequency AC signals. The color block 192 includes a second red light group, a second green light group, and a second blue light group, and the color block 192 is controlled by the second group of three different frequency AC signals. The color block 193 includes a third red light group, a third green light group, and a third blue light group, and the color block 193 is controlled by the third group of three different frequency AC signals. The color block 194 includes a fourth red light group, a fourth green light group, and a fourth blue light group, and the color block 194 is controlled by the fourth group of three different frequency AC signals. Thereby, the color blocks 191, 192, 193, 194 are respectively controlled by four sets of alternating current signals to generate four different illuminating colors, and the color blocks 191, 192, 193 can be controlled by the simple interface control power transmitting unit. 194 are different from each other and change at any time, thereby increasing the color and variability of the advertising billboard, wherein the number and pattern of color blocks are not limited thereto.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and the present invention can be modified and retouched without departing from the spirit and scope of the present invention. The scope is subject to the definition of the scope of the patent application.

Claims (10)

A light emitting diode planar light source device comprising: at least one first substrate, which is transparent; at least one power emitting unit connected to one side of the first substrate and wirelessly transmitting at least one alternating current signal, the alternating current signal Having a frequency; and at least one light emitting diode module disposed on one side of the first substrate and comprising: a power receiving unit that receives the alternating current signal; an AC/DC converting unit, the alternating current signal is received by the power source The unit outputs the AC/DC conversion unit, and the AC signal is converted into a DC power source by the AC/DC conversion unit; and a plurality of LED units for supplying the LED units. The light-emitting diode planar light source device of claim 1, wherein the number of the first substrates is at least two, and the first substrates are assembled and connected. The illuminating diode planar light source device of claim 2, wherein the number of the power transmitting units is at least two and The number of the first substrates is the same, and each of the power transmitting units is connected to the corresponding side of the first substrate, and the power transmitting units are assembled and connected. The light-emitting diode planar light source device of claim 1, wherein the light-emitting diode units are divided into at least two light groups, each of the two light groups having a light color, and the two light colors are not mutually the same. The illuminating diode planar light source device of claim 4, wherein the AC signal emitted by the power transmitting unit is at least two, and the two frequencies of the two AC signals are different from each other, and the two light groups are respectively The signal should be exchanged for controlled illumination. The illuminating diode planar light source device of claim 4, wherein the number of the power transmitting units is at least two, and the two frequencies of the two power transmitting units are different from each other, and the two light groups respectively correspond to The AC signal is controlled to emit light. The light-emitting diode planar light source device of claim 1, further comprising: at least one second substrate that is transparent and disposed in parallel with the first substrate, wherein the light-emitting diode module is disposed Between the first substrate and the second substrate. The light-emitting diode planar light source device of claim 1, wherein a light-emitting direction of a portion of the light-emitting diode units faces the first substrate, and a light-emitting direction of another portion of the light-emitting diode units Keep away from the first substrate. A display device comprising: the light-emitting diode planar light source device according to claim 1; and at least one display film disposed on the other side of the first substrate of the light-emitting diode planar light source device, The display film receives an image signal to display an image. The display of claim 9, wherein a part of the light emitting diode units has a light emitting direction toward the first substrate, and another part of the light emitting diode units has a light emitting direction away from the first substrate.