JP2012145725A - Led display device and stereoscopic glasses - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an LED display device and stereoscopic glasses which enable an observer in a wide area to observe an image in a stereoscopic view.SOLUTION: The LED display device shifts the light emitting wavelengths of LEDs by changing the driving currents from first currents to second currents, and displays an image for a right eye and an image for a left eye with different light emitting wavelengths. The stereoscopic glasses use a filter which makes either first wavelengths before the light emitting wavelengths are shifted or second wavelengths after the light emitting wavelengths have been shifted transmit therethrough as a light control member for the right eye or the left eye.

Description

  The present invention provides an LED display device in which LEDs are arranged in a dot matrix shape and alternately display an image for the right eye and an image for the left eye, and this image is passed through the light adjustment member for the right eye and the light adjustment member for the left eye. The present invention relates to stereoscopic glasses that can be viewed stereoscopically.

  A video display device has been proposed in which a right-eye image and a left-eye image are displayed, and the video is observed through glasses, so that the video can be stereoscopically viewed.

  For example, in the video display device described in Patent Document 1, a video from a 3D video display unit in which a right-eye video display unit having a phase difference function and a left-eye video display unit not having a phase difference function are mixed is displayed to an observer. The right-eye lens with a polarizing plate that transmits the right-eye image from the right-eye image display unit and the left-eye image from the left-eye image display unit, and the left-eye image from the left-eye image display unit transmits the right-eye image. By viewing with polarized glasses composed of a left-eye lens with a polarizing plate that blocks the right-eye image from the image display unit for viewing, stereoscopic viewing can be achieved.

  In addition, the liquid crystal display device described in Patent Document 2 includes an active matrix type liquid crystal display that switches between a right-eye image and a left-eye image, and an optical shutter that synchronizes with the image rewriting cycle of the display. Optical shutter glasses having components for electrically switching between a light transmission state and a light non-transmission state are arranged for the right eye and the left eye.

JP 2002-31385 A JP 2010-117437 A

  However, in the video display device described in Patent Document 1, a polarizing plate may be simply provided as the right-eye dimming member and the left-eye dimming member of the polarized glasses worn by the observer. As the unit, it is necessary to arrange a right-eye video display unit having a band-like phase function and a left-eye video display unit not having a phase difference function alternately arranged in front of the video display unit.

  In addition, the liquid crystal display device described in Patent Document 2 requires optical shutter glasses that are synchronized with the video to be switched. Therefore, the glasses need a power source such as a battery. If the optical shutter glasses are handled carelessly, they break down. There is a fear.

  An LED display device in which LEDs are arranged in a dot matrix is installed outdoors in front of a station or facility and is observed by a large number of passers-by, and thus is observed in a wide range in front of the LED display device. Therefore, in the method using a polarizing plate and the method using an optical shutter, the range in which stereoscopic viewing is possible is limited.

  Therefore, an object of the present invention is to provide an LED display device and stereoscopic glasses that allow a wide range of observers to observe stereoscopically.

  The present invention relates to an LED display device that displays a right-eye image and a left-eye image at different emission wavelengths by shifting the wavelength by changing the LED drive current, and the first wavelength or wavelength before the wavelength shift. Stereoscopic eyeglasses using a right-eye or left-eye dimming member as a filter that transmits one of the shifted second wavelengths is provided.

  In the present invention, it is not necessary to provide a polarizing plate or the like in front of the LED panel section, and the wavelength-shifted image can be observed from a wide range, so that a wide range of observers can observe stereoscopically. Is possible. In addition, since a power source or the like is not required as stereoscopic glasses, even if they are handled carelessly, they do not break down.

1 is a perspective view showing an LED display device and stereoscopic glasses according to Embodiment 1 of the present invention. The block diagram which shows the structure of the LED display apparatus shown in FIG. The partially expanded front view which shows the LED panel part of the LED display apparatus shown in FIG. Partial enlarged sectional view of the LED panel shown in FIG. The figure for demonstrating the spectacles for stereoscopic vision shown in FIG. The graph which shows the relationship between the light emission wavelength and light emission intensity for demonstrating the wavelength shift of a LED display apparatus, and the filter characteristic of stereoscopic glasses Chart showing the timing of display data and control signals The figure for demonstrating the timing of 1 frame, the period of 1st electric current value data, and 2nd electric current value data Graph showing wavelength change when drive current of red LED, green LED, and blue LED is changed from 0.8 mA to 9.6 mA in steps of 0.8 mA The block diagram which shows the structure of the LED display apparatus which concerns on Embodiment 2 of this invention. The block diagram which shows the structure of the LED display apparatus which concerns on Embodiment 3 of this invention. The block diagram which shows the structure of the LED display apparatus which concerns on Embodiment 4 of this invention.

  1st invention of this application is based on the timing signal which shows each flame | frame of the display data for right eyes, and the display data for left eyes displayed on the LED panel part by which LED is arrange | positioned at dot matrix form, and LED panel part , A current value indicating unit for outputting the current value for lighting the LED panel unit as the first current value data for the right eye and the second current value data for the left eye, and for the right eye from the current value indicating unit The LED of the LED panel unit is turned on with a current value based on the first current value data to display an image of display data for the right eye having the first wavelength as a peak wavelength, and a second current value for the left eye An LED display comprising: an LED drive unit that lights an LED of the LED panel unit with a current value based on data and displays an image of display data for the left eye having a second wavelength as a peak wavelength. It is a ray equipment.

  According to the first aspect of the invention, the current value instructing unit is configured to output the first current value data and the 2 current value data is output. The LED driving unit turns on the LED of the LED panel unit based on the first current value data and the second current value data, so that the LED panel unit displays an image with the first wavelength as the peak wavelength on the right eye. As an example, an image having the second wavelength as the peak wavelength is displayed for the left eye. It is known that the wavelength of light emitted from an LED shifts when the driving current changes. Due to this wavelength shift, images with different wavelengths are displayed for the right eye and the left eye. Therefore, since the image for the right eye and the image for the left eye are merely displayed with different current values, it is not necessary to provide a polarizing plate or the like in front of the LED panel portion. Further, the wavelength-shifted image can be observed from a wide range.

  According to a second invention of the present application, in the first invention, the LED panel unit is arranged in a dot matrix shape with a set of three colors of red, green, and blue LEDs, and the current value indicating unit is The LED display device is characterized in that the first current value data for the right eye and the second current value data for the left eye are output to the LED driving unit based on the driving currents of the three color LEDs. is there.

  According to the second aspect of the invention, the LED panel portion can be displayed in color by arranging the LEDs of three colors, red, green and blue, in a dot matrix.

  According to a third invention of the present application, in the first or second invention, the LED driving unit drives the higher one of the first current value data for the right eye and the second current value data for the left eye. In this case, the LED display device is characterized in that the lighting rate of displaying the display data in accordance with the lower emission intensity is reduced, and the LEDs of the LED panel unit are turned on.

  According to the third invention, the light emission intensity of the LED due to the higher drive current can be reduced to match the light emission intensity of the LED due to the lower drive current. Can be combined with Therefore, it is possible to suppress the occurrence of a sense of incongruity.

  According to a fourth aspect of the present invention, there is provided an LED panel unit in which an LED for the right eye whose peak wavelength is the first wavelength and an LED for the left eye whose peak wavelength is the second wavelength are arranged in a dot matrix. A lighting instruction unit for instructing lighting of either the right-eye LED or the left-eye LED based on a timing signal indicating each frame of the display data for the right eye and the display data for the left eye displayed on the LED panel unit; An LED display device comprising: an LED driving unit that lights a right-eye LED or a left-eye LED based on an instruction from a lighting instruction unit.

  According to the fourth aspect of the invention, the lighting instruction unit is either for the right eye or for the left eye based on the timing signal indicating each frame of the display data for the right eye and the display data for the left eye displayed on the LED panel unit. Instructs to turn on the LED. Based on this instruction, the LED driving unit turns on the LED for the right eye whose peak wavelength is the first wavelength, or lights the LED for the left eye whose peak wavelength is the second wavelength. . By doing so, images with different wavelengths are displayed for the right eye and the left eye. Therefore, the LED for the right eye and the image for the left eye are prepared by preparing LEDs having different peak wavelengths as LED panel parts, and each is lit separately. Therefore, a polarizing plate or the like is provided in front of the LED panel part. There is no need. Further, the wavelength-shifted image can be observed from a wide range.

  According to a fifth invention of the present application, in the fourth invention, the LED panel unit is configured by combining three LEDs of red, green, and blue for the right eye and three LEDs of red, green, and blue for the left eye. LED display device characterized in that it is arranged in a dot matrix form as a set, and the lighting instruction unit alternately outputs instructions for driving three-color LEDs for right eye or left eye to the LED driving unit It is.

  According to the fifth aspect of the present invention, the LED panel portion is formed in a dot matrix shape by combining three LEDs of red, green and blue for the right eye and three LEDs of red, green and blue for the left eye. It is possible to display in color by arranging them.

  According to a sixth invention of the present application, one of the red, green and blue LEDs has a first LED for the right eye whose peak wavelength is the first wavelength, and a peak wavelength which is the second wavelength. And the remaining two-color LEDs are driven with the first current value, so that the peak wavelength becomes the first wavelength and is driven with the second current value. Thus, the timing indicating the respective frames of the LED panel unit composed of the third and fourth LEDs whose peak wavelength is the second wavelength, and the display data for the right eye and the display data for the left eye displayed on the LED panel unit Based on the signal, the lighting instruction unit for instructing the lighting of either the first LED or the left-eye LED, and the first LED for the right eye to be lit based on the instruction from the lighting instruction unit, or for the left eye Or turn on the second LED Based on the first LED driving unit and the timing signal, a current value for lighting the LED panel unit is output as first current value data for the right eye and second current value data for the left eye. Display data for the right eye having the first wavelength as the peak wavelength by turning on the third and fourth LEDs with the current value based on the first current value data for the right eye from the instruction unit and the current value instruction unit And displaying the left-eye display data image having the second wavelength as the peak wavelength by turning on the third and fourth LEDs with the current value based on the left-eye second current value data. An LED display device comprising a second LED driving unit for displaying.

  The sixth invention is a composite type of the LED display device of the first invention and the LED display device of the third invention. Of the three color LEDs for color display, one color is composed of the first and second LEDs, the first LED is for the right eye whose peak wavelength is the first wavelength, and the second LED is For the left eye whose peak wavelength is the second wavelength. The lighting instruction unit instructs the first and second LEDs to turn on either the first LED or the second LED based on the timing signal. Based on this instruction, the LED driving unit turns on the first LED for the right eye whose peak wavelength is the first wavelength, or turns on the second LED for the left eye whose peak wavelength is the second wavelength. Or Further, the remaining two colors of the three color LEDs for performing color display are constituted by the third and fourth LEDs. The current value indicating unit outputs first current value data and second current value data based on the timing signal. The LED driving unit lights the third and fourth LEDs based on the first current value data and the second current value data, so that the third and fourth LEDs have the first wavelength peaked. An image having the wavelength is displayed for the right eye, and an image having the second wavelength as the peak wavelength is displayed for the left eye. As described above, the first LED that emits light at the first wavelength, the third and fourth LEDs that emit light at the first wavelength according to the first current value, and the second that emits light at the second wavelength. LEDs having different wavelengths for the right eye and for the left eye are displayed by the LEDs and the third and fourth LEDs that emit light at the second wavelength according to the second current value. Therefore, it is possible to display a right-eye image and a left-eye image. Therefore, it is not necessary to provide a polarizing plate or the like in front of the LED panel portion. Further, since the image for the right eye and the image for the left eye only differ in wavelength, the image can be observed from a wide range.

  7th invention of this application was equipped with the light control member for right eyes and left eyes in order to observe the image displayed on LED arrange | positioned at the dot matrix form of the LED panel part provided in the LED display apparatus. Stereoscopic glasses that use a first filter that transmits an image having a first wavelength from an LED as a peak wavelength as one dimming member, and that has a second wavelength shifted from the first wavelength. Stereoscopic eyeglasses characterized in that a second filter that transmits an image having a wavelength is used as the other light control member.

  According to the seventh invention, as the right-eye and left-eye dimming members, either one is the first filter that transmits the first wavelength, and the other is the second filter that transmits the second wavelength. By doing so, different images can be observed for the right eye and the left eye, so that the observer can visually recognize the stereoscopic vision by observing the stereoscopic display data. Therefore, since a power source or the like is not required for the stereoscopic glasses, no trouble occurs even if they are handled carefully.

  According to an eighth aspect of the present invention, in the fifth aspect, the first filter is for red light that transmits each first wavelength from the red, green, and blue LEDs provided in the LED panel section. A filter for green, a filter for green, and a filter for blue, and the second filter is a filter for red, a filter for green, and a filter for blue that transmit respective second wavelengths from LEDs of three colors of red, green, and blue Stereoscopic glasses characterized by comprising:

  According to the eighth invention, the first filter and the second filter are provided for red, green, and blue, respectively, so that the color-displayed image can be stereoscopically viewed.

(Embodiment 1)
An LED display device and stereoscopic glasses according to Embodiment 1 of the present invention will be described with reference to the drawings. First, an LED display device will be described with reference to FIGS.

  As shown in FIG. 1, the LED display device 10 is a large image display device installed outdoors such as a facility or a street corner. The LED display device 10 is displayed based on display data from a video output device (not shown), and a passerby (not shown) wearing the stereoscopic glasses 20 becomes an observer to observe the video. The

  As shown in FIG. 2, the LED display device 10 includes an LED panel unit 11, a current value instruction unit 12, and an LED drive unit 13.

  As shown in FIG. 3 and FIG. 4, the LED panel unit 11 is arranged in a dot matrix form in vertical and horizontal rows with a set of three colors of red, green, and blue LEDs, and display data is displayed. It functions as an image display panel. The LED panel unit 11 includes a circuit board 112 on which a plurality of LEDs 111 functioning as point light sources are mounted, and a front panel 113 provided with a through hole through which the LEDs 111 can be viewed.

  The circuit board 112 is a printed wiring board in which a wiring pattern made of a metal thin film is formed on a resin insulating board. The front panel 113 is a black resin plate having a matte surface. The LEDs 111 are arranged on the circuit board 112 in a vertical column and a horizontal column, with two red LEDs 111R, one green LED 111G and one blue LED 111B as a set. A hood 114 is provided on the front panel 113 at regular intervals in the vertical direction. The hood 114 is formed over the entire length in the width direction. In the first embodiment, the hoods 114 are arranged alternately with the LEDs 111 in the vertical direction.

  Returning to FIG. 2, the current value instructing unit 12 lights the LED panel unit 11 based on the timing signals indicating the frames of the display data for the right eye and the display data for the left eye displayed on the LED panel unit 11. Current values A and B for the red, green, and blue colors are output as first current value data for the right eye and second current value data for the left eye, respectively, and instructed to the LED drive unit 13 It has a function to do.

  That is, the current value instructing unit 12 outputs the first current value data for red when the display data for the right eye is red data. Similarly, when the data is green data, the first current value data for green is output. Further, in the case of blue data, the first current value data for blue is output. Further, the current value instruction unit 12 outputs the second current value data for red when the display data for the left eye is red data. Similarly, in the case of green data, the second current value data for green is output. Further, in the case of blue data, the second current value data for blue is output.

  In the first embodiment, a timing signal indicating a frame is a vertical synchronization signal (Vsync signal).

  The LED drive unit 13 turns on the LED 111 of the LED panel unit 11 with a current value based on the first current value data for the right eye from the current value instruction unit 12 and sets the first wavelength to the peak wavelength. While displaying the image of display data, the LED 111 of the LED panel unit 11 is turned on with the current value based on the second current value data for the left eye, and the display data image for the left eye with the second wavelength as the peak wavelength The function to display is provided.

  Next, the stereoscopic glasses 20 will be described with reference to FIGS. 5 and 6. As shown in FIG. 5, the stereoscopic glasses 20 have a right-eye light-modulating member 201 and a left-eye light-modulating member on a rim 23 that is a frame body attached to the front portion of the temple 21 via a hinge 22. 202.

  The right-eye light control member 201 and the left-eye light control member 202 are filters that transmit only a specific wavelength. Here, the light control member 201 for the right eye and the light control member 202 for the left eye will be described in detail.

  The dimming member 201 for the right eye functions as a first filter that transmits light of the first wavelength emitted from each of the red LED, the green LED, and the blue LED from the LED panel unit 11.

  The dimming member 202 for the left eye serves as a second filter that transmits light having a second wavelength shifted from the first wavelength emitted from each of the red LED, the green LED, and the blue LED from the LED panel unit 11. It functions.

  For example, as shown in FIG. 6, the red LED filter 201 a of the right-eye light control member 201 transmits from 613.5 nm to 614.5 nm and blocks other wavelengths. The green LED filter 201b transmits from 531 nm to 532 nm and blocks other wavelengths. The blue LED filter 201c transmits from 464 nm to 465 nm and blocks other wavelengths.

  The red LED filter 202a of the left-eye light control member 202 transmits light from 614.5 nm to 615.5 nm and blocks other wavelengths. The green LED filter 202b transmits from 532 nm to 533 nm and blocks other wavelengths. The blue LED filter 202c transmits from 465 nm to 466 nm and blocks other wavelengths.

  The right-eye light-modulating member 201 and the left-eye light-modulating member 202 include the red LED filters 201a and 202a and the green LED filters 201b and 202b that are formed in a square shape with the same area, and the red LED light-adjusting member. Blue LED filters 201c and 202c formed in a rectangular shape having a combined area of the filters 201a and 202a and the green LED filters 201b and 202b are arranged in a matrix (see FIG. 5).

  The operation of the LED display device 10 and the usage state of the stereoscopic glasses 20 according to Embodiment 1 of the present invention configured as described above will be described with reference to the drawings.

  The LED display device 10 inputs display data from a video output device (not shown). As shown in FIG. 7, the display data of the three colors is transmitted from the video output device as RGB data together with a clock (CLK) signal (not shown), a vertical synchronization (Vsync) signal, and a horizontal synchronization (Hsync) signal. .

  As shown in FIG. 8, the current value instructing unit 12 changes the first current value and the first current value in accordance with the period of the right-eye display data and the left-eye display data for one frame that are alternately transmitted based on the Vsync signal. 2 current values are alternately output to the LED drive unit 13.

  The LED drive unit 13 causes a current to flow through the LED panel unit 11 based on the current value data from the current value instruction unit 12.

  Here, the first current value data and the second current value data that the current value instruction unit 12 instructs the LED drive unit 13 will be described with reference to FIG. FIG. 9 is a graph showing the change in wavelength when the drive currents of the red LED 111R, the green LED 111G, and the blue LED 111B are changed in steps of 0.8 mA from 0.8 mA to 9.6 mA, and an enlarged view of the CIExy chromaticity diagram. It is.

  As shown in FIG. 9, when the drive current is changed from 0.8 mA to 9.6 mA, the emission wavelength of the red LED 111R is shifted from 614 nm to 615 nm. In the case of the green LED 111G, the emission wavelength shifts from 529 nm to 536 nm. In the case of the blue LED 111B, the emission wavelength shifts from 463 nm to 466 nm. Within this wavelength shift, the drive current can be selected.

  The wavelength when displaying the display data for the right eye and the display data for the left eye is changed using the wavelength shift by changing the drive current.

  Specifically, when the LED drive unit 13 displays the display data for the right eye, the current value instruction unit uses the data indicating that the drive current is 0.5 mA (first current value) as the first current value data. 12 instructs the LED drive unit 13. By doing so, red LED 111R of LED panel part 11 light-emits at 614 nm which is the 1st wavelength which red filter 201a of dimming member 201 for right eyes permeate | transmits.

  Further, when the LED drive unit 13 displays the left-eye display data, the current value indicating unit 12 uses the data indicating that the drive current is 9.6 mA (second current value) as the second current value data. The drive unit 13 is instructed. By doing so, the red LED 111R of the LED panel unit 11 emits light at 615 nm, which is the second wavelength transmitted by the red LED filter 202a of the left-eye dimming member 202.

  Similarly, in the case of green and blue other than red, when the current value instructing unit 12 displays the right eye display data, the first current value data is output to the LED driving unit 13, and when displaying the left eye display data, the LED The second current value data is output to the drive unit 13.

  In this manner, the LED display device 10 can display different wavelengths in the right-eye image and the left-eye image.

  When the observer wears the stereoscopic glasses 20 and observes the LED display device 10, when the LED display device 10 displays the right-eye data, an image based on the right-eye data has an emission wavelength shown in FIG. Since it is displayed (indicated by a solid line), it passes through the light control member 201 for the right eye, but cannot transmit the light control member 202 for the left eye.

  Next, when the LED display device 10 displays left-eye data, an image based on the left-eye data is displayed at the emission wavelength (shown by a one-dot chain line) shown in FIG. 202 is transmitted, but the light control member 201 for the right eye cannot be transmitted.

  Therefore, since the image by the right eye data is recognized only by the right eye and the image by the left eye data is recognized only by the left eye, the image by the LED display device 10 can be viewed stereoscopically.

  As described above, the LED display device 10 displays the right-eye image and the left-eye image for stereoscopic viewing only by changing the current value. Therefore, the LED display device 10 is specially polarized in front of the LED panel unit 11. There is no need to provide a plate. Further, the wavelength-shifted image can be observed from a wide range. Therefore, it is possible to cause a wide range of observers to observe stereoscopically while suppressing an increase in cost.

  Further, since the stereoscopic glasses 20 are configured only with a filter, a power source or the like is not required as the stereoscopic glasses. Therefore, even if the stereoscopic glasses 20 are handled carefully, there is no failure.

  As described above, according to the LED display device 10 and the stereoscopic glasses 20 according to Embodiment 1 of the present invention, a color image that can be stereoscopically viewed can be enjoyed with a simple configuration.

  In the first embodiment, by setting the first current value to be a high current and the second current value to be a current lower than the first current value, the first wavelength is a short wavelength and the second wavelength is Although the wavelength is longer than the first wavelength, it may be reversed.

  In addition, for each color of red, green, and blue, the current value is uniformly reduced when switching from the display data for the right eye to the display data for the left eye, but the transmission wavelength of the dimming member of the stereoscopic glasses is set to each wavelength. As long as the current value is adjusted, the current value may be changed by combining the color to be raised and the color to be lowered.

  Furthermore, in the present embodiment, the color image is used, but it is also possible to use a single color LED, for example, red, green, blue, white or other colors by a combination of LED and phosphor. Even in this case, the transmission wavelength of the light control member of the stereoscopic glasses may be adjusted to the wavelength shift.

(Embodiment 2)
An LED display device according to Embodiment 2 of the present invention will be described with reference to the drawings.

  As shown in FIG. 10, the LED display device 30 includes an LED panel unit 31, a lighting instruction unit 32, and an LED driving unit 33.

  The LED panel unit 31 is basically the same as that described with reference to FIGS. 3 and 4. However, in the LED panel unit 31 according to the second embodiment, the three-color LEDs that emit the first wavelength are separately provided with the LED 121 for the right eye and the LED 122 for the left eye that emits the second wavelength. Yes.

  For example, for the right eye, a red LED has a peak wavelength in the range from 613.5 nm to 614.5 nm. The green LED has a peak wavelength in the range from 531 nm to 532 nm. Blue LEDs have peak wavelengths in the range from 464 nm to 465 nm.

  For the left eye, the red LED has a peak wavelength in the range from 614.5 nm to 615.5 nm. The green LED has a peak wavelength ranging from 532 nm to 533 nm. The blue LED has a peak wavelength in the range from 465 nm to 466 nm.

  The LED panel unit 31 arranges the three colors of LEDs for the right eye adjacent to each other as one dot for the right eye and three colors of LEDs for the left eye as one dot for the left eye, and is arranged in a dot matrix. Each LED having this different peak wavelength can be prepared by selecting those included in a predetermined emission wavelength range from among a large number of LEDs.

  The lighting instructing unit 32 sets red the timing for lighting the LED panel unit 31 based on the timing signal indicating each frame of the display data for the right eye and the display data for the left eye displayed on the LED panel unit 31. For green, green and blue, and a function of instructing the LED drive unit 33. Also in the second embodiment, a timing signal indicating a frame is used as a vertical synchronization signal (Vsync signal).

  The LED drive unit 33 turns on the right-eye LED 121 or turns on the left-eye LED 122 based on an instruction from the lighting instruction unit 32.

  The operation of the LED display device 30 according to the second embodiment of the present invention configured as described above will be described with reference to the drawings.

  The LED display device 30 inputs display data from a video output device (not shown). As shown in FIG. 7, the display data of the three colors is transmitted from the video output device as RGB data together with a clock (CLK) signal (not shown), a vertical synchronization (Vsync) signal, and a horizontal synchronization (Hsync) signal. . This is the same as in the first embodiment.

  The lighting instruction unit 32 turns on the lighting of the right-eye LED 121 and the lighting of the left-eye LED 122 in accordance with the period of the right-eye display data and the left-eye display data for one frame transmitted alternately based on the Vsync signal. It outputs to the LED drive part 33 alternately.

  Based on an instruction from the lighting instruction unit 32, the LED driving unit 33 causes a current to flow alternately at the same current value for lighting the right-eye LED 121 and lighting the left-eye LED 122 of the LED panel unit 31.

  Since the LED panel unit 31 is lit in this manner, the right-eye image and the left-eye image can be displayed at different wavelengths. This image is displayed by the stereoscopic glasses 20 shown in FIG. By observing, the observer can stereoscopically view the image as in the first embodiment.

  Thus, even if the current driven by the LED driving unit 33 is the same, two types of LEDs that emit light at two different wavelengths are provided for the right eye or the left eye, thereby reliably emitting light at two types of wavelengths. Can be made.

(Embodiment 3)
An LED display device according to Embodiment 3 of the present invention will be described with reference to the drawings. In FIG. 11, the same components as those in FIGS. 2, 3, and 10 are denoted by the same reference numerals and description thereof is omitted.

  As shown in FIG. 11, the LED display device 40 includes an LED panel unit 41, a current value instruction unit 12, a first LED drive unit 13x, a lighting instruction unit 32, and a second LED drive unit 33x. I have.

The LED panel portion 41 is basically the same as that described with reference to FIGS. 3 and 4. However, the LED panel 41 according to the third embodiment, two is one LED among the red LED111R is red LED111R _r for the right eye for emitting a first wavelength, the other LED is the second wavelength It emits a red LED111R _L for the left eye.

The red LED111R _r for the right eye may be a peak wavelength to adopt a range from 613.5nm to 614.5nm. The red LED111R _L for the left eye may be a peak wavelength to adopt a range from 614.5nm to 615.5nm.

  The two red LEDs 111R are instructed to the second LED driving unit 33x by the lighting instructing unit 32 based on a timing signal (Vsync signal) indicating a frame. Each is driven based on the display data for the left eye.

  In addition, the green LED 111G and the blue LED 111B of the LED panel unit 41 emit a first wavelength when driven at the first current value for the right eye and are driven at the second current value for the left eye. Emits a wavelength of 2.

  The green LED 111G can employ a first wavelength having a peak wavelength in the range from 531 nm to 532 nm and a second wavelength having a peak wavelength in the range from 531 nm to 532 nm. Furthermore, the blue LED 111B can employ a first wavelength having a peak wavelength ranging from 464 nm to 465 nm and a second wavelength having a peak wavelength ranging from 465 nm to 466 nm.

  In the green LED 111G and the blue LED 111B, the current value instruction unit 12 uses the first current value data for the right eye and the second current value data for the left eye as the first current value data based on the timing signal indicating each frame of the display data. The current is output to the LED drive unit 13x, and the first LED drive unit 13x drives a current for lighting based on the first current value data and the second current value data.

  When the current is driven based on the first current value data, the green LED 111G and the blue LED 111B emit display data for the right eye at the first wavelength, and the current is driven based on the second current value data. The display data for the left eye emits light at the second wavelength.

  Thus, in the LED display device 40 according to the third embodiment, the red LED for the right eye and the left eye is switched, and the red LED 111R that emits light at the first wavelength and the second wavelength is switched. The first wavelength and the second wavelength are switched by a wavelength shift according to the current value.

  Since the LED panel 41 is turned on in this way, the right-eye image and the left-eye image can be displayed with different wavelengths, and this image is displayed on the stereoscopic glasses 20 shown in FIG. By observing, the observer can stereoscopically view the image as in the first and second embodiments.

  Moreover, since the LED panel part 11 of Embodiment 1 can be used as it is, cost can be suppressed compared with the LED panel part 31 of Embodiment 2.

  In the third embodiment, two red LEDs 111R are provided and one green LED 111G and one blue LED 111B are provided. However, the green LEDs 111G are two LEDs having different peak wavelengths, and the red LEDs 111R and blue LEDs 111B are provided. The wavelength may be switched according to the current value. Furthermore, the blue LED 111B may be two LEDs having different peak wavelengths, and the wavelength of the red LED 111R and the green LED 111G may be switched according to the current value.

(Embodiment 4)
An LED display device according to Embodiment 4 of the present invention will be described with reference to the drawings. The LED display device according to the fourth embodiment is characterized in that a difference in light emission intensity due to current for the right-eye and left-eye LEDs driven by the LED driving unit is suppressed by gradation. In FIG. 12, the same components as those in FIG.

  The LED drive unit 13p of the LED display device 10p shown in FIG. 12 has a function of adjusting the gradation according to the drive current when driving the LED panel unit 11.

  For example, when the display data for the right eye is displayed, the drive current of the red LED 111R is 0.5 mA (first current value), whereas when the display data for the left eye is displayed, the drive current of the red LED 111R is 9.6 mA. (Second current value). Accordingly, since the light emission intensity when displaying for the left eye is increased, the brightness of the entire image can be varied. Therefore, when displaying the display data for the left eye, the LED drive unit 13p performs correction to uniformly lower the lighting rate than when displaying the display data for the left eye. That is, corrected gradation data for display is generated by multiplying gradation data indicating gradation included in display data from a video output device (not shown) by a lighting rate for correction.

  Then, the LED 111 is driven by PWM (Pulse Width Modulation) based on the corrected gradation data, thereby reducing the light emission intensity of the LED by the higher drive current of the first current value or the second current value. Thus, it is possible to match the light emission intensity of the LED with the lower drive current. Therefore, since the brightness of the entire image can be adjusted for the right eye and the left eye, it is possible to suppress the occurrence of discomfort.

  Since the present invention allows a wide range of observers to observe stereoscopically, an LED display device in which LEDs are arranged in a dot matrix and an image for the right eye and an image for the left eye are alternately displayed, and this image Is suitable for stereoscopic glasses that can be viewed stereoscopically by observing through the light adjusting member for the right eye and the light adjusting member for the left eye.

10, 30, 40, 10p LED display device 11, 31, 41 LED panel unit 12 Current value indicating unit 13, 33, 13p LED drive unit 13x first LED drive unit 20 Stereoscopic glasses 21 Temple 22 Hinge 23 Rim 32 Lighting instruction unit 33x Second LED driving unit 111 LED
111R Red LED
111R _r Red LED for right eye
111R _L Red LED for left eye
111G green LED
111B Blue LED
112 circuit board 113 front panel 114 hood 121 right eye LED
122 LED for left eye
201 Dimming member for right eye 201a Red LED filter 201b Green LED filter 201c Blue LED filter 202 Left eye dimming member 202a Red LED filter 202b Green LED filter 202c Blue LED filter

Claims (8)

An LED panel portion in which LEDs are arranged in a dot matrix;
Based on the timing signal indicating each frame of the display data for the right eye and the display data for the left eye displayed on the LED panel unit, the current value for turning on the LED panel unit is the first current for the right eye. A current value indicating unit that outputs the value data and second current value data for the left eye;
The LED of the LED panel unit is turned on with a current value based on the first current value data for the right eye from the current value instruction unit, and an image of display data for the right eye having the first wavelength as the peak wavelength is displayed. In addition, the LED driving unit displays the image of the left-eye display data with the second wavelength as the peak wavelength by turning on the LED of the LED panel unit with a current value based on the second current value data for the left eye An LED display device comprising: The LED panel portion is arranged in a dot matrix with a set of three colors of red, green, and blue LEDs,
The current value instructing unit outputs first current value data for right eye and second current value data for left eye to the LED driving unit based on the driving current of each of the three color LEDs. Item 2. The LED display device according to Item 1. When the LED driving unit drives the higher one of the first current value data for the right eye and the second current value data for the left eye, the LED drive unit displays the display data in accordance with the lower emission intensity. The LED display device according to claim 1, wherein the LED of the LED panel unit is turned on by reducing a lighting rate to be displayed. An LED panel unit in which a right-eye LED whose peak wavelength is a first wavelength and a left-eye LED whose peak wavelength is a second wavelength are arranged in a dot matrix;
A lighting instruction unit for instructing lighting of either the right-eye LED or the left-eye LED based on a timing signal indicating each frame of the display data for the right eye and the display data for the left eye displayed on the LED panel unit;
An LED display device, comprising: an LED driving unit that lights a right-eye LED or a left-eye LED based on an instruction from the lighting instruction unit. The LED panel portion is arranged in a dot matrix with a set of red, green and blue LEDs for the right eye and red, green and blue LEDs for the left eye as a set. ,
5. The LED display device according to claim 4, wherein the lighting instruction unit alternately outputs instructions for driving three-color LEDs for a right eye or a left eye to the LED driving unit. One color LED of red, green and blue LEDs is a first LED for the right eye whose peak wavelength is the first wavelength, and a second LED for the left eye whose peak wavelength is the second wavelength. The remaining two-color LEDs are driven with the first current value, the peak wavelength becomes the first wavelength, and the second wavelength LED is driven with the second current value so that the peak wavelength is the second wavelength. An LED panel portion composed of third and fourth LEDs having wavelengths;
A lighting instruction that instructs lighting of either the first LED or the left-eye LED based on a timing signal indicating each frame of the display data for the right eye and the display data for the left eye displayed on the LED panel unit And
A first LED driving unit that lights up the first LED for the right eye or lights up the second LED for the left eye based on an instruction from the lighting instruction unit;
A current value indicating unit that outputs a current value for lighting the LED panel unit as first current value data for the right eye and second current value data for the left eye based on the timing signal;
An image of display data for the right eye having the first wavelength as a peak wavelength by turning on the third and fourth LEDs with a current value based on the first current value data for the right eye from the current value indicating unit. And displaying the image of display data for the left eye with the second wavelength as the peak wavelength by turning on the third and fourth LEDs with a current value based on the second current value data for the left eye. An LED display device comprising: a second LED driving unit. In order to observe an image displayed on an LED arranged in a dot matrix of an LED panel unit provided in an LED display device, stereoscopic glasses equipped with right-eye and left-eye light control members,
The first filter that transmits an image having the first wavelength from the LED as a peak wavelength is used as one dimming member, and an image having a second wavelength shifted from the first wavelength as a peak wavelength is transmitted. Stereoscopic glasses, wherein the second filter is the other light control member. The first filter includes a red filter, a green filter, and a blue filter that transmit respective first wavelengths from three red, green, and blue LEDs provided in the LED panel section,
8. The second filter includes a red filter, a green filter, and a blue filter that transmit respective second wavelengths from the red, green, and blue LEDs. 3D glasses.

Images