WO2005111496A1 - 照明装置及び照明装置を用いた液晶表示装置 - Google Patents
照明装置及び照明装置を用いた液晶表示装置 Download PDFInfo
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- WO2005111496A1 WO2005111496A1 PCT/JP2005/008806 JP2005008806W WO2005111496A1 WO 2005111496 A1 WO2005111496 A1 WO 2005111496A1 JP 2005008806 W JP2005008806 W JP 2005008806W WO 2005111496 A1 WO2005111496 A1 WO 2005111496A1
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- light
- separating means
- emitting diode
- green
- red
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133603—Direct backlight with LEDs
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133609—Direct backlight including means for improving the color mixing, e.g. white
Definitions
- Illumination device and liquid crystal display device using illumination device are Illumination device and liquid crystal display device using illumination device
- the present invention relates to a lighting device and a color liquid crystal display device, and more particularly, to a lighting device using a light emitting diode, and a liquid crystal panel illuminated by a lighting device using a light emitting diode, and displayed on the liquid crystal panel.
- the present invention relates to a liquid crystal display device for displaying an image.
- liquid crystal display has become widespread as displays used in television receivers, personal computers, portable electronic devices, and the like.
- the liquid crystal display is equipped with a liquid crystal panel for displaying images, and a backlight device for illuminating the liquid crystal panel from behind to display images on the liquid crystal panel clearly.
- a cold cathode fluorescent lamp Cold Cathode Fluorescent Lamp
- mercury is used in the cold cathode fluorescent lamp, there is a possibility that the mercury flows out, for example, when the knock light device is broken. Therefore, a backlight device using a light emitting diode (LED) has been proposed.
- LED light emitting diode
- Light emitting diodes have a long service life of about 50,000 hours. Therefore, by using the light emitting diode, it is possible to reduce the adverse effect on the environment and to realize a long-life backlight device.
- the bottom surface is a circle having a diameter of about 9.6 mm and the height is about 6.09 mm
- the range irradiated by the emitted light is narrow. Since the range of irradiation by the light emitted from the LED is narrow, it is used as a light source for knock light devices provided in large liquid crystal displays used for televisions, for example.
- the brightness of the light emitted from the LEDs varies from one LED to another. Therefore, as the number of LEDs used in the backlight device increases, the brightness and color of the light illuminating the liquid crystal panel and the like become more uneven. If the brightness or color of the light illuminating the liquid crystal panel or the like becomes uneven, the color quality of the image projected on the liquid crystal display deteriorates.
- the present invention has been proposed in view of the conventional situation described above, and uses a light emitting diode as a light source, and can efficiently use light emitted from the light emitting diode or emit light.
- a light emitting diode as a light source
- the colors of the image displayed on the LCD panel can be projected with good reproducibility. It is an object of the present invention to provide a possible color liquid crystal display device.
- the lighting device reflects a light emitting diode (LED) having high directivity in a direction inclined from the optical axis, and reflects a part of light emitted from the light emitting diode.
- a light separating means for partially transmitting the light.
- the light emitting diode is disposed at a position separated by a predetermined distance from the light separating means, and the light separating means transmits a part of the light emitted from the light emitting diode and reflects a part of the light to form the light separating means.
- a virtual image of the light emitting diode which is an apparent emission source of the light reflected by the light separating means, is generated at a position facing the light emitting diode with the center as the center.
- Another lighting device includes a plurality of light emitting diodes (LEDs) having high directivity in a direction inclined from the optical axis, and a part of light emitted from the light emitting diodes.
- the light separating means are arranged in a row at a predetermined pitch, and the light emitting diodes are arranged in a region interposed between the light separating means.
- the light separating means is interposed between the light separating means and transmits part of the light emitted from the light emitting diode and reflects part of the light. Is generated, and a virtual image of the light emitting diode which is an apparent emission source of the light reflected by the light separating means is generated in the area.
- Still another illumination device has high directivity in a direction inclined from the optical axis, and includes a plurality of red light emitting diodes (LEDs) that emit red light;
- a green light emitting diode that emits green light and has a high directivity in a direction inclined from the optical axis, and a blue light emitting diode that emits blue light in a direction inclined from the optical axis.
- a green light separating means for reflecting the incident blue light and red light and transmitting a part of the incident blue light and partially reflecting and transmitting the incident red light and green light.
- the red light separating means, the green light separating means, and the blue light separating means are alternately arranged at a pitch of w (where w> 0), and the red light emitting diodes are arranged adjacent to each other.
- the green light separating means and the blue light separating means are arranged every other, and the green light emitting diodes are arranged at the centers of the adjacent blue light separating means and the red light separating means.
- the blue light emitting diodes are arranged every other, and the blue light emitting diodes are arranged every other at the center of the red light separating means and the green light separating means which are arranged adjacent to each other. 1.
- a part of the light emitted from the red light emitting diode arranged at a position separated by 5w is transmitted and partially reflected, and the green light separating means is arranged at a position separated by 1.5w. Part of the light emitted from the green light emitting diode is transmitted and partially
- the blue light separating means reflects a part of the light emitted from the blue light emitting diode which is disposed at a distance of 1.5 w, reflects a part of the light, and is positioned 3 w away from each other;
- the two red light separation means, in which the red light emitting diode is not arranged at the center, are provided between the green light separation means and the blue light separation means which are arranged at a position sandwiched by the two red light separation means.
- a virtual image of a red light emitting diode which is the apparent source of red light reflected by the two red light separating means, is located 3w away from each other, and no green light emitting diode is located at the center
- Two green light separation means Is the apparent emission of the green light reflected by the two green light separating means between the blue light separating means and the red light separating means located between the two green light separating means.
- the original blue light-emitting diode forms a virtual image, is located 3w apart from each other, and has no blue light-emitting diode in the center.Two blue light separating means are sandwiched by two blue light separating means.
- a virtual image of a blue light emitting diode which is an apparent source of blue light reflected by the two blue light separating means, is formed between the red light separating means and the green light separating means arranged at the position.
- Yet another illumination device has high directivity in a direction inclined from the optical axis, and emits red light (LED; Light Emitting Diode), and is inclined from the optical axis.
- a blue light emitting diode that has high directivity in the direction and emits blue light
- a green light emitting diode that has high directivity in the direction inclined from the optical axis and emits green light.
- a red light separating unit that transmits and partially reflects the incident red light and transmits the incident green light and blue light, and transmits and partially reflects the incident green light.
- the red light separating means is arranged so that the pitch of 3w and the pitch of 5w are alternately repeated.
- the blue light separating means is arranged at a position shifted by 4w in a predetermined direction from the red light transmitting means, and the green light separating means.
- the means are arranged one by one at a position w away from the two red light transmitting means in a region sandwiched between two red light transmitting means arranged adjacently at a pitch of 3 w,
- Each of the red light emitting diodes is arranged at a position separated by w from the two blue light transmitting means in a region between the two blue light transmitting means which are arranged adjacently at a pitch of 3w.
- Two blue light emitting diodes are arranged at a pitch of 3w.Blue light emitting diodes are arranged at the center of two green light separating means arranged in a region sandwiched by two red light separating means arranged at a pitch.
- the green light emitting diode is located at the center of the two green light separating means, the green light emitting diode is located at the center of the red light separating means and the blue light separating means, and the red light separating means is 1.5 w away. A part of the light emitted from the red light emitting diode disposed at the position is transmitted and partially reflected, and the green light separating means is disposed at a position separated by 1.5 w.
- the blue light separating means transmits a part of the light emitted from the green light emitting diode and reflects a part of the light emitted from the green light emitting diode.
- the red light separating means and the green light separating means which is disposed at a position 3w away from the red light separating means, transmits part of the light and partially reflects the red light separating means and the green light separating means.
- a blue light separating means which forms a virtual image of a red-green light emitting diode that is an apparent emission source of light, and a green light separating means disposed at a position 3w away from the blue light separating means, is a blue light separating means.
- Still another illumination device has high directivity in a direction inclined from the optical axis, and includes a plurality of red light emitting diodes (LEDs) that emit red light;
- a green light emitting diode that emits green light and has a high directivity in a direction inclined from the optical axis, and a blue light emitting diode that emits blue light in a direction inclined from the optical axis.
- a diode, a green light separating unit that transmits a part of the incident green light and reflects a part thereof, and transmits the incident blue light and red light, and transmits a part of the incident red light and blue light.
- red light / blue light separating means for partially reflecting the light and transmitting the incident green light.
- the green light separating means is arranged at a pitch of 4w, the red light blue light separating means is arranged at a position shifted w from the green light separating means in a predetermined direction, and the green light emitting diodes are adjacent to each other.
- the red light emitting diodes are arranged in the center of two adjacent red light blue light separating means, one for each other.
- the blue light-emitting diodes are arranged at every other center of two adjacent red light and blue light separating means, and the green light separating means are arranged at a position 2 w away from each other.
- a part of the light emitted from the green light emitting diode is transmitted and partially reflected, and the red light / blue light separating means is emitted from the red light emitting diode and the blue light emitting diode arranged at a position 2 w away from each other. Part of the light Are separated by 4 watts from each other with no green light emitting diode between them.
- the green light separating means is reflected between the two green light separating means by the two green light separating means.
- a virtual image of a green light-emitting diode, which is an apparent emission source of the green light is arranged 4 w away from each other, and a red light-emitting diode and a blue light-emitting diode are interposed between!
- the red light / blue light separating means is provided between the two red light / blue light separating means and a virtual image of a red light emitting diode which is an apparent source of the red light reflected by the two red light / blue light separating means. And a virtual image of a blue light emitting diode, which is an apparent emission source of the blue light reflected by the two red light / blue light separating means, according to still another illumination device according to the present invention in a direction inclined from the optical axis.
- the three primary color light separating means are arranged in a line at a pitch of 4w, and the red light emitting diode, the green light emitting diode, and the blue light emitting diode are respectively located in the region sandwiched by the three primary color light separating means and Z or
- the three primary color light separating means are arranged at every other end of the three primary color light separating means, and the three primary color light separating means are arranged in adjacent areas, and the red light emitting diode, the green light emitting diode, and the blue light emitting diode
- the separation means is provided in a region sandwiched by the two three primary color light separation means, the virtual light source of the red light emitting diode which is an apparent emission source of the red light reflected by the two three primary color light separation means.
- a virtual image of a green light emitting diode which is an apparent emission source of the green light reflected by the two three primary color light separation means, and an apparent emission source of the blue light reflected by the two three primary color light separation means And a virtual image of a blue light emitting diode.
- Still another lighting device has high directivity in a direction inclined from the optical axis.
- a red light emitting diode (LED) that emits red light
- a green light emitting diode that emits green light and has high directivity and tilts from the optical axis
- a green light emitting diode that emits green light.
- a blue light-emitting diode that emits blue light and has high directivity in the inclined direction, and a three-primary-color light separator that reflects some of the incident red, green, and blue light and transmits some of them
- the three primary color light separating means are arranged in a line at a pitch of w, and the red light emitting diode, the green light emitting diode, and the blue light emitting diode are sandwiched by the three primary color light separating means, respectively.
- the three primary color light separation means are Located in adjacent area Transmits a part of the light emitted from the color light emitting diode, the green light emitting diode, and the blue light emitting diode, reflects a part of the light, is adjacent to each other, and has a red light emitting diode, a green light emitting diode, and a blue light emitting diode therebetween.
- the two primary color light separation means are arranged in the area sandwiched by the two primary color light separation means, and the apparent source of the red light reflected by the two primary color light separation means.
- a virtual image of a blue light emitting diode that is the emission source of the light.
- the liquid crystal display device is a liquid crystal display device including a transmissive liquid crystal panel and a backlight device for illuminating the liquid crystal panel from one main surface side, wherein the backlight device is inclined from an optical axis.
- a light emitting diode LED; light emitting diode
- the light separating means is arranged at a predetermined distance from the light separating means, and the light separating means transmits a part of the light emitted from the light emitting diode and reflects a part of the light to form the light separating means.
- a virtual image of the light emitting diode which is an apparent emission source of the light reflected by the light separating means is generated.
- Another liquid crystal display device is a liquid crystal display device including a transmissive liquid crystal panel and a backlight device for illuminating the liquid crystal panel from one main surface side.
- the light source device has a plurality of light emitting diodes (LEDs) with high directivity in the direction inclined from the optical axis, and reflects a part of the light emitted from the light emitting diode to form a part.
- a plurality of light separating means for transmitting light, the light separating means are arranged in a row at a predetermined pitch, and the light emitting diodes are arranged alternately in a region sandwiched between the light separating means.
- the light separating means transmits part of the light emitted from the light emitting diode and reflects part of the light, so that the light separating means is interposed between the light separating means and the area where the light emitting diode is not arranged.
- a virtual image of a light emitting diode which is an apparent emission source of the light reflected by the light separating means is generated.
- Still another liquid crystal display device is a liquid crystal display device including a transmissive liquid crystal panel and a backlight device that illuminates the liquid crystal panel from one main surface side. It has high directivity in the direction inclined from the axis, and multiple red light emitting diodes (LEDs) that emit red light, and high directivity in the direction inclined from the optical axis.
- LEDs red light emitting diodes
- a red light separating unit that reflects the light and transmits the incident green light and blue light, and a green light that transmits a part of the incident green light and partially reflects the incident green light and transmits the incident blue light and red light.
- a blue light separating means for reflecting the light and transmitting the incident red light and green light, wherein the red light separating means, the green light separating means, and the blue light separating means are alternately w (however, w > 0.)
- the red light emitting diodes are arranged at every other center of the green light separating means and the blue light separating means arranged adjacent to each other.
- the diodes are arranged every other center of the blue light separating means and the red light separating means arranged adjacent to each other, and the blue light emitting diodes are arranged in the adjacent red light separating means.
- the green light separating means are arranged every other, and the red light separating means transmits a part of the light emitted from the red light emitting diode located 1.5 w away from the light emitting diode.
- the part is reflected and the green light separation means is 1.5W away They arranged to reflect a portion passes through the part of the light emitted from Ru green LED, blue color light separation means, emitted from the blue light emitting diode disposed on the We'll 5w position A part of the emitted light is transmitted and a part of the light is reflected, and it is located 3w away from each other.A red light emitting diode is placed at the center! An apparent source of red light reflected by the two red light separating means, between the green light separating means and the blue light separating means arranged at a position sandwiched by the red light separating means, red.
- a virtual image of the light emitting diode is formed, located 3w apart from each other, and the green light emitting diode is located at the center !, na !, the two green light separating means are sandwiched by two green light separating means.
- the light emitting diode is disposed !, na !, the two blue light separating means are disposed between the red light separating means and the green light separating means disposed at a position sandwiched by the two blue light separating means.
- a virtual image of a blue light emitting diode, which is an apparent emission source of the blue light reflected by the two blue light separating means, is formed.
- Still another liquid crystal display device is a liquid crystal display device including a transmissive liquid crystal panel and a backlight device that illuminates the liquid crystal panel from one main surface side. It has high directivity in the direction inclined from the axis and emits red light, and it has high directivity in the direction inclined from the optical axis and blue in the direction inclined from the optical axis.
- a blue light emitting diode that emits light, a green light emitting diode that emits green light with high directivity in a direction inclined from the optical axis, and a part of incident red light is transmitted and partially reflected
- a red light separating means for transmitting the incident green light and blue light, and a green light separating means for transmitting a part of the incident green light and partially reflecting the incident green light and transmitting the incident blue light and red light Transmits a part of the incident blue light and Blue light separating means for transmitting the incident and incident red light and green light, wherein the red light separating means is arranged so that the pitch of 3w and the pitch of 5w are alternately repeated, and the blue light separating means is provided.
- the green light separating means is disposed in an area between two red light transmitting means which are adjacently arranged at a pitch of 3 w. Each one is placed at a position w away from the two red light transmitting means, and the area sandwiched between two blue light transmitting means that are adjacently arranged at a pitch of 3w.
- One red light emitting diode is arranged at a distance of w from the two blue light transmitting means in the area, and the red light emitting diodes are arranged at a pitch of 3 w, and are arranged in an area sandwiched by two red light separating means.
- the blue light emitting diodes are arranged at the center of the two green light separating means, and are arranged at a pitch of 3w.
- the two green light separating means are arranged in an area between the two blue light separating means.
- the green light emitting diode is located at the center of the means, the green light emitting diode is located at the center of the red light separating means and the blue light separating means, and the red light separating means emits light from the red light emitting diode located at a distance of 1.5 w
- the green light separating means transmits a part of the light emitted from the green light emitting diode which is disposed at a position separated by 1.5 w and transmits a part of the reflected light.
- the blue light separation means is 1.5w away Part of the light emitted from the blue light-emitting diode disposed at a different position and partially reflected, and the red light separating means and the green light located 3w away from the red light separating means
- the light separating means is a green light reflected by the green light separating means between the green light separating means and the blue light separating means arranged in a region sandwiched by the red light separating means and the green light separating means.
- a virtual image of a red-green light emitting diode which is an apparent emission source of the red light reflected by the red light separating means, and is disposed at a position 3w away from the blue light separating means and the blue light separating means.
- the green light separating means is a light reflected by the green light separating means between the green light separating means and the red light separating means arranged in a region interposed between the blue light separating means and the green light separating means.
- Green light and blue Forming a virtual image of the blue green light-emitting diode as the emission source of the apparent blue light reflected by the light separating means.
- Still another liquid crystal display device is a liquid crystal display device including a transmissive liquid crystal panel and a backlight device that illuminates the liquid crystal panel from one main surface side. It has high directivity in the direction inclined from the axis, and multiple red light emitting diodes (LEDs) that emit red light, and high directivity in the direction inclined from the optical axis.
- LEDs red light emitting diodes
- a green light separating unit that reflects the light and transmits the incident blue light and red light, and transmits and reflects a part of the incident red light and blue light, Red light and blue light separating means for transmitting the emitted green light, wherein the green light separating means are arranged at a pitch of 4w, and the red light and blue light separating means are arranged in a predetermined direction from the green light separating means.
- the green light emitting diodes are arranged at shifted positions, and two green light emitting diodes are arranged at every other center of two adjacent green light separating means, and the red light emitting diodes are arranged at two adjacent red light blue.
- the blue light-emitting diodes are arranged at every other one at the center of the light separating means, and the blue light-emitting diodes are arranged at the center of two adjacent red light-blue light separating means, one at a time every other.
- the light separating means transmits and partially reflects a part of the light emitted from the green light emitting diode disposed at a position 2w away, and the red light blue light separating means is disposed at a position 2w away.
- Red light emitting diode and blue light emitting A part of the light emitted from the diode transmits and reflects a part of the light, and is arranged 4 w away from each other.
- a virtual image of a green light-emitting diode which is the apparent source of the green light reflected by the two green light separating means, is located between the means and is located 4 w away from each other, with red being between them
- the red light blue light separating means in which the light emitting diode and the blue light emitting diode are not arranged, is provided between the two red light blue light separating means and the apparent emission of the red light reflected by the two red light blue light separating means.
- a virtual image of the original red light emitting diode and a virtual image of the apparent blue light emitting source of the blue light reflected by the two red light / blue light separating means are formed.
- Still another liquid crystal display device is a liquid crystal display device including a transmissive liquid crystal panel and a backlight device that illuminates the liquid crystal panel from one main surface side. It has high directivity in the direction inclined from the axis and emits red light, and it has high directivity in the direction inclined from the optical axis and green in the direction inclined from the optical axis.
- three primary colors light Sandwiched Hanarete step region and Z or both ends of the region of the placed three primary colors light separating means in a row The three primary color light separating means are disposed every other, and partially transmit and partially transmit the light emitted from the red light emitting diode, the green light emitting diode, and the blue light emitting diode disposed in the adjacent regions.
- the red light-emitting diode, the green light-emitting diode, and the blue light-emitting diode are disposed adjacent to each other and the two primary light separating means are separated by two primary light separating means.
- the virtual image of the red light emitting diode which is the apparent emission source of the red light reflected by the two three primary color light separation means, and the apparent green light reflected by the two three primary color light separation means
- a virtual image of a green light emitting diode as an emission source and a virtual image of a blue light emitting diode as an apparent emission source of the blue light reflected by the two three primary color light separating means are formed.
- Still another liquid crystal display device is a liquid crystal display device including a transmissive liquid crystal panel and a backlight device that illuminates the liquid crystal panel from one main surface side. It has high directivity in the direction inclined from the axis and emits red light, and it has high directivity in the direction inclined from the optical axis and green in the direction inclined from the optical axis.
- Three primary color light separating means that reflects and partially transmits light, and the three primary color light separating means are arranged in a row at a pitch of w, and the red light emitting diode, the green light emitting diode, and the blue light emitting diode are:
- Each of the three primary light components In the area sandwiched by the separation means and the area at both ends of the Z or three primary color separation means arranged in a row, every other one is arranged in a predetermined order in opposition to the three primary color light separation means,
- the three primary color light separating means transmits a part of the light emitted from the red light emitting diode, the green light emitting diode, and the light emitted from the blue light emitting diode and reflects a part of the light emitted from the adjacent areas, and is adjacent to each other;
- a red light-emitting diode, a green light-emitting diode, and a blue light-emitting diode are arranged between
- the virtual image of the ode and the apparent source of the blue light reflected by the two primary color separation means And a virtual image of the blue light emitting diode.
- the light separating means transmits a part of the light emitted from the light emitting diode and reflects a part of the light, so that the light separating means faces the light emitting diode with the light separating means as a center.
- a virtual image of the light emitting diode is generated, which is the apparent source of the light reflected by the means.
- the number of light emitting diodes used can be apparently increased in the lighting device according to the present invention.
- the lighting device according to the present invention can emit light with a uniform luminance distribution using a small number of light emitting diodes and illuminate an object to be illuminated. Become. Further, in the liquid crystal display device according to the present invention, the liquid crystal panel is illuminated by an illuminating device that emits light having a uniform luminance distribution using a small number of light emitting diodes.
- the lighting device and the liquid crystal display device according to the present invention can reduce the number of light emitting diodes to be used, as compared with the case where the light separating means is not provided. Since the number of light emitting diodes to be used can be reduced, the lighting device and the color liquid crystal display device according to the present invention can reduce the cost for manufacturing. In addition, it is possible to reduce the power consumed when used.
- FIG. 1 is a perspective view showing a color liquid crystal display device to which the present invention is applied.
- FIG. 2 is a block diagram showing a driving circuit of the color liquid crystal display device.
- FIG. 3 is a partially cutaway perspective view showing a backlight device to which the present invention is applied.
- FIG. 4A is a side view showing a light source unit provided in the backlight device
- FIG. 4B is a plan view thereof.
- FIG. 5 is a side view schematically showing a side-emitting LED.
- FIG. 6A is a sectional view showing a red light transmitting / reflecting plate used in the present embodiment.
- FIG. 7A is a sectional view showing a green light transmitting / reflecting plate used in the present embodiment.
- B is a graph showing the transmittance of green light incident on the green light transmitting / reflecting plate.
- FIG. 8A is a cross-sectional view showing a blue light transmitting / reflecting plate used in the present embodiment.
- B is a graph showing the transmittance of blue light incident on the blue light transmitting / reflecting plate.
- FIG. 9 is a cross-sectional view showing a reflector in which an optical multilayer film is formed on both main surfaces of a glass substrate.
- FIG. 10A is a cross-sectional view showing a plane-symmetric red light transmitting / reflecting plate with a center plane between one main surface and the other main surface as a plane of symmetry
- FIG. 4 is a graph showing the transmittance of red light.
- FIG. 11A is a cross-sectional view showing a plane-symmetric green light transmitting / reflecting plate with a center plane between one main surface and the other main surface as a plane of symmetry, and FIG. It is a graph which shows the transmittance
- FIG. 12A is a cross-sectional view showing a plane-symmetric blue light transmitting / reflecting plate with a center plane between one main surface and the other main surface as a plane of symmetry
- FIG. 7 is a graph showing the transmittance of blue light obtained.
- FIG. 13 is a diagram for explaining an arrangement of LEDs and a light separating plate provided in a light source unit, and a position of a virtual image formed by the light separating plate.
- FIG. 14A is a side view showing another example of the arrangement of the LEDs provided in the light source unit, and FIG. 14B is a plan view thereof.
- FIG. 15 is a plan view showing still another arrangement example of the LEDs provided in the light source unit.
- FIG. 16 is a diagram for explaining an example in which luminance unevenness of light emitted from a diffusion plate is improved by controlling light transmittance and reflectance with a light transmission / reflection plate. .
- FIG. 17 is a plan view showing a side edge type knock light device.
- FIG. 18A is a side view showing a light source unit according to the second embodiment of the present invention
- FIG. 18B is a plan view thereof.
- FIG. 19 is a side view showing an arrangement of LEDs and a light separating plate provided in a light source unit, and a position of a virtual image formed by the light separating plate.
- FIG. 20A is a side view showing a light source unit according to a third embodiment of the present invention.
- FIG. 21A shows an example of the arrangement of LEDs and light separation plates provided in the light source unit, and is a cross-sectional view taken along a straight line L1 shown in FIGS. 20A and 20B, and FIG. 21B is a plan view thereof.
- FIG. 21C is a cross-sectional view taken along line L2 shown in FIGS. 20A and 20B.
- FIG. 22A is a side view showing a light source unit according to a fourth embodiment of the present invention
- FIG. 22B is a plan view of the device.
- FIG. 23 is a cross-sectional view showing a three-primary-color light separating plate used in the fourth embodiment.
- FIG. 24 is a side view showing an arrangement of LEDs and a light separating plate provided in a light source unit, and a position of a virtual image formed by the light separating plate.
- FIG. 25 is a plan view showing another arrangement method of the LEDs in the light source unit.
- FIG. 26 is a plan view showing a light source unit according to a fifth embodiment of the present invention.
- FIG. 27 is a side view showing an arrangement of LEDs and a light separating plate provided in the light source unit, and a position of a virtual image formed by the light separating plate.
- the present invention is applied to, for example, a backlight type color liquid crystal display device 1 having a configuration as shown in FIG.
- the color liquid crystal display device 1 includes a transmissive liquid crystal panel 10 and a backlight device 20 provided on one surface of the liquid crystal panel 10, that is, on the back side.
- the user watches the image projected on the liquid crystal panel 10 from the front side, which is the other side.
- the liquid crystal panel 10 has a TFT substrate 11 and a counter electrode substrate 12 which are two transparent substrates made of glass or the like arranged opposite to each other, and a liquid crystal layer 13 in which a twisted nematic liquid crystal is sealed in a gap therebetween. Established.
- the TFT substrate 11 has signal lines 14 and scanning lines 15 arranged in a matrix. Further, on the TFT substrate 11, a thin film transistor 16 as a switching element arranged at an intersection of the signal line 14 and the scanning line 15 and a pixel electrode 17 are formed. The thin film transistor 16 is sequentially selected by the scanning line 15 and the video signal supplied from the signal line 14 is output. Is written to the corresponding pixel electrode 17.
- a counter electrode 18 and a color filter 19 are formed on the inner surface of the counter electrode substrate 12.
- the side on which the TFT substrate 11 is disposed is the rear side
- the side on which the counter electrode substrate 12 is disposed is the front side.
- the liquid crystal panel 10 having the above-described configuration is sandwiched between two polarizing plates 25 and 26, and the active matrix driving is performed in a state where white light is illuminated from the rear side by the knock light device 20.
- the active matrix driving is performed in a state where white light is illuminated from the rear side by the knock light device 20.
- white light is illuminated from the rear side by the knock light device 20.
- the backlight device 20 The details of the backlight device 20 will be described later.
- the color liquid crystal display device 1 is driven by, for example, a drive circuit 30 having an electric block configuration shown in FIG.
- the drive circuit 30 includes a power supply unit 31 for supplying drive power for the liquid crystal panel 10 and the backlight device 20, an X driver circuit 32 and a Y driver circuit 33 for driving the liquid crystal panel 10, and an input terminal 34 for receiving an external video signal.
- An RGB process processing unit 35 which is supplied via the RGB processing unit 35, a video memory 36 and a control unit 37 connected to the RGB process processing unit 35, and a backlight drive control unit 38 that drives and controls the knock light device 20. .
- the video signal input through the input terminal 34 is subjected to signal processing such as chroma processing by an RGB process processing unit 35, and further, an RGB signal suitable for driving the liquid crystal panel 10 is obtained from the composite signal.
- the signal is converted to a separate signal and supplied to the control unit 37, and is also supplied to the X driver circuit 32 via the video memory 36.
- the control unit 37 controls the X driver circuit 32 and the Y driver circuit 33 at a predetermined timing according to the RGB separate signal, and controls the X driver circuit 32 and the Y driver circuit 33 with the RGB separate signal supplied to the X driver circuit 32 via the video memory 36.
- the backlight device 20 to which the present invention is applied includes a substantially rectangular housing 40 and a light source unit 50-l to 50-m (where, m is a natural number, and hereinafter, when it is not necessary to distinguish them, they are collectively referred to as a light source unit 50.)
- the lighting device 20 is of a so-called direct type, and illuminates the liquid crystal panel 10 by emitting light emitted from a light source unit 50 provided on the bottom surface of the housing 40 from the entire upper surface of the housing 40. You.
- the housing 40 has a bottom surface 40a and four side surfaces formed by a reflection plate 41, and an upper surface formed by a diffusion plate 42.
- the reflecting plate 41 When light emitted from the light source unit 50 is incident, the reflecting plate 41 is provided with a diffusing plate 42 for reflecting the incident light, and travels in a direction.
- the liquid crystal panel 10 is illuminated by light emitted from the entire main surface of the diffusion plate 42.
- the light source unit 50 emits red light, green light, and blue light that are the sources of white light emitted from the diffusion plate 42.
- the light source unit 50 includes a rectangular substrate 51. As shown in FIG. 3, the substrate 51 is provided on the bottom surface 40a of the housing 40 so that the longitudinal direction matches the longitudinal direction of the housing 40.
- a red light separating plate 52R On the substrate 51, as shown in FIGS. 4A and 4B, a red light separating plate 52R, a green light separating plate 52G, a blue light separating plate 52B, and a red light emitting diode (hereinafter, referred to as an LED). ) 53R, green LED53G and blue LED53B.
- the red light separating plate 52R, the green light separating plate 52G, and the blue light separating plate 52B are collectively referred to as the light separating plate 52 when it is not necessary to distinguish them.
- the red LED 53R, the green LED 53G, and the blue LED 53B are collectively referred to as an LED 53 when it is not necessary to distinguish them.
- the red LED 53R, the green LED 53G, and the blue LED 53B emit red light, green light, and blue light, respectively.
- the backlight device 20 emits white light generated by mixing the red light emitted from the red LED 53R, the green light emitted from the green LED 53G, and the blue light emitted from the blue LED 53B with the diffuser 42 as a whole. Then, the liquid crystal panel 10 is illuminated.
- the side-emitting LED 53 has directivity in a direction inclined from the optical axis L, that is, in a direction inclined from a direction perpendicular to the bottom surface of the LED 53.
- the side-emitter LED5 3 is that the direction of the optical axis L is 0 °, the direction along the bottom surface 54 is 90 °, and the brightness distribution of the emitted light is measured at each angle. At an angle of 90 °, the angle is set to a predetermined angle.
- the side emitting type LED 53 there is a standard side emitter (Luxeon Emitter Side Emitting; trade name) manufactured by LUMILEDS.
- the standard side emitter has a brightness of 0 ° in the optical axis L direction and 90 ° in the direction along the bottom surface 54, and the brightness distribution of emitted light is measured at each angle. The highest is said to be 80 °. That is, it has directivity in a direction inclined by 80 ° from the optical axis L.
- each LED 53 By using a side emission type LED 53, most of the light emitted from each LED 53 enters the light separating plate 52. The light emitted from each LED 53 is partially reflected by the light separating plate 52 and partially transmitted, thereby dividing the optical path.
- an LED 53 that emits light with a higher luminance than usual it is preferable to use an LED 53 that emits light with a higher luminance than usual.
- the standard type side emitter has a brightness of emitted light of about 10 to 20 times that of a general LED. Specifically, the intensity of the red light output from the red LED is 40 lumens, the intensity of the green light emitted from the green 13 is 27 lumens, and the intensity of the blue light emitted from the blue LED is 27 lumens. The light intensity is 9 lumens. Therefore, when a standard type side emitter is used as the LED 53, the brightness of the light split by the light separating plate 52 becomes high.
- the red light separating plate 52R transmits 50% of the incident red light, reflects 50% of the incident red light, and transmits 100% of the incident green light and blue light.
- the red light separating plate 52R reflects 50% of the incident red light to form a virtual image 53R ′ of the red LED 53R that is an apparent emission source of the reflected red light.
- the red light separation plate 52R is located at a position opposite to the red LED 53R that emits the red light incident on the red light separation plate 52R with the red light separation plate 52R as a center.
- a virtual image 53R 'of the color LED 53R is formed.
- a virtual image 53R 'of the red LED 53R is formed at a position where the light incident surface of the red light separation plate 52R is a plane of symmetry and the red LED 53R that emits the red light incident on the red light separation plate 52R is plane-symmetric. .
- the green light separating plate 52G transmits 50% of the incident green light and reflects 50% of the incident green light, and transmits 100% of the incident blue light and red light.
- the green light separation plate 52G reflects 50% of the incident green light, thereby forming a virtual image 53G ′ of the green LED 53B that is an apparent emission source of the reflected green light.
- the green light separating plate 52B is a virtual image 53G ′ of the green LED 53G at a position centered on the green light separating plate 52B and facing the green LED 53G that emitted the green light incident on the green light separating plate 52B.
- the blue light separating plate 52B transmits 50% of the incident blue light and reflects 50% of the incident blue light, and transmits 100% of the incident red light and green light.
- the blue light separating plate 52B reflects the 50% of the incident blue light, thereby forming a virtual image 53B 'of the blue LED 53B which is an apparent emission source of the reflected blue light.
- the blue light separation plate 52B is a virtual image 53B ′ of the blue LED 53B at a position centered on the blue light separation plate 52B and opposed to the blue LED 53B that has emitted the blue light incident on the blue light separation plate 52B.
- the light separating plate 52 may be an optical multilayer film formed by laminating a high refractive index material having a refractive index of 1.5 or more, a low refractive index material having a refractive index of less than 1.5, or a metal material. It is composed of an optical single-layer film composed of the above.
- the light separating plate 52 is an optical multilayer film in which NbO and SiO are laminated.
- the light separation plate 52 of the present embodiment is formed, for example, on one glass substrate by vacuum deposition or sputtering with an NbO layer.
- An optical multilayer film in which SiO layers are alternately laminated is formed, and the other gas layer is formed on the optical multilayer film.
- the light separating plate 52 has a transmittance and a reflection of the incident light at one main surface and the other main surface. It is preferable that the optical characteristics such as the ratio are the same. By making the optical characteristics of one main surface and the other main surface the same, the difference between the transmittance and the reflectance caused by the absorption of the light incident on the light separating plate 52 is reduced. be able to.
- the light separating plate 52 is formed so that the optical characteristics with respect to light having an incident angle of 10 ° become desired characteristics.
- a red light separation plate 52R is formed on a first glass substrate 70 with a first NbO layer 71 having a thickness of 219 nm and a thickness of 169 nm.
- the transmittance of the incident light is measured for each wavelength of the red light separating plate 52R having a large configuration, as shown by P1 in FIG. It transmits about 50% of red light and reflects about 50%, and transmits almost 100% of green light and blue light. Although not shown, when light is incident from the second glass substrate 76 side, it transmits about 50% of red light and reflects about 50%, and emits green light and blue light almost 100%. %To Penetrate.
- the green light separation plate 52G has a first SiO layer 81 having a thickness of 96 nm on a first glass substrate 80 and a first SiO layer 81 having a thickness of 308 nm. NbO layer 82,
- the lath substrate 85 is laminated.
- the transmittance of the incident light is measured for each wavelength with respect to the green light separating plate 52G having a strong structure, as shown by P2 in FIG. It transmits about 50% of light and reflects about 50%, and transmits almost 100% of blue light and red light. Also, although not shown, when light is incident from the second glass substrate 85 side, about 50% of green light is transmitted and about 50% is reflected, and blue light and red light are reflected. Through almost 100%.
- a first NbO layer 91 having a thickness of 168 nm and a first NbO layer 91 having a thickness of 32 nm are formed on a first glass substrate 90, as shown in FIG. 8A.
- a first NbO layer 91 having a thickness of 168 nm and a first NbO layer 91 having a thickness of 32 nm are formed on a first glass substrate 90, as shown in FIG. 8A.
- the SiO layer 92 is formed of the SiO layer 92.
- the second NbO layer 95 having a thickness of 168 nm is sequentially formed by sputtering or vacuum evaporation.
- a second glass substrate 96 is laminated on the third NbO layer 95.
- the horizontal axis indicates the wavelength
- the vertical axis indicates the light transmittance
- the light separating plate 52 has optical multilayer films 101a and 101b formed on both main surfaces 100a and 100b of the glass substrate 100 by sputtering or vacuum deposition. It may be configured. Even in such a configuration, the optical characteristics such as the transmittance and the reflectance of the incident light can be made the same between the one main surface and the other main surface.
- FIG. 6A, FIG. 7A, FIG. 8A, and FIG. 9 each have a plane symmetric structure with the center plane between one main surface and the other main surface as a plane of symmetry. Even when the separation plate 52 is not a plane-symmetric configuration in which the center plane of one main surface and the other main surface is symmetrical, by adjusting the film thickness of each layer, one main surface and the other main surface can be formed. Optical characteristics such as transmittance and reflectance of light incident on the main surface can be made the same.
- a red light separating plate 52R is formed on a 188 ⁇ m-thick polyethylene terephthalate substrate 200 hard-coated with a thick acrylic UV curing resin.
- a first NbO layer 201 with a thickness of 99.59 nm and a thickness of 97
- the SiO layer 202 with a thickness of 06 nm and the second NbO layer 203 with a thickness of 99.57 nm are sputtered. It is configured to be sequentially formed by, for example, taring or vacuum evaporation.
- the green light separation plate 52G is formed on a 188 ⁇ m-thick poly (ethylene terephthalate) substrate 210 hard-coated with an acrylic UV curable resin.
- the structure is formed sequentially by vacuum evaporation or the like.
- the transmittance of the incident light is measured for each wavelength of the green light separating plate 52G having a strong structure, as shown on P12 in FIG. 11B, when light is incident from the polyethylene terephthalate substrate 210 side, the green light is separated. It transmits about 50% of light and reflects about 50%, and transmits almost 100% of blue light and red light. In addition, a force not shown is used.
- a blue 188 ⁇ m-thick poly (ethylene terephthalate) substrate 220 hard-coated with an acrylic UV curable resin has a thickness 124. 33 nm first NbO layer 221 and thickness force 123. 60 nm
- the structure is formed sequentially by vacuum evaporation or the like.
- the blue light separating plate 52B having a strong configuration As shown on P13 in FIG. 12B, when light is incident from the polyethylene terephthalate substrate 220 side, the blue It transmits about 50% of light and reflects about 50%, and transmits almost 100% of red light and green light. In addition, a force not shown is used.
- the arrangement of the red light separation plate 52R, the green light separation plate 52G, the blue light separation plate 52B, the red LED 53R, the green LED 53G, and the blue LED 53B, and the red light separation plate 52R, the green light separation plate 52G, and the blue light The virtual image 53 'of the red LED 53R, the virtual image 53G of the green LED 53G, and the virtual image 53B of the blue LED 53B formed by the separation plate 52B will be described.
- the red light separating plate 52R, the green light separating plate 52G, and the blue light separating plate 52B are arranged at a pitch of w (where w> 0) along the longitudinal direction of the substrate 51. They are alternately arranged in a line so that the main surfaces face each other. That is, the red light separating plate 52R, the green light separating plate 52G, and the blue light separating plate 52B are arranged at a pitch of 3w each in a positional relationship shifted by w from each other!
- One red LED 53R is placed at every other center of the green light separating plate 52G and blue light separating plate 52B placed between two red light separating plates 52R that are placed 3w apart. Is done. That is, the red LEDs 53R are arranged at the center of the green light separating plate 52G and the blue light separating plate 52B at a pitch of 6w.
- the green LED 53G is located at the center of the blue light separating plate 52B and the red light separating plate 52R, which are arranged between two green light separating plates 52G, which are located 3w apart, and the optical axis of the green LED 53G and the red LED 53R. Are arranged one by one every other so that the distance from the optical axis is 2w. That is, the green LEDs 53G are arranged at the center of the blue light separating plate 52B and the green light separating plate 52G at a pitch of 6w.
- the blue LED 53B is located at the center of the red light separating plate 52R and the green light separating plate 53G disposed between the two blue light separating plates 52B which are arranged 3w apart from each other, and the optical axis of the blue LED 53B and the red LED 53R. Are arranged every other so that the distance between the optical axis of the blue LED 53B and the optical axis of the green LED 53G is 2w. That is, the blue LEDs 53B are arranged at the center of the red light separating plate 52R and the green light separating plate 52G at a pitch of 6w.
- each light separating plate 52 and each LED 53 By arranging each light separating plate 52 and each LED 53 as described above, two red light separating plates which are arranged at a distance of 3 watts and in which the red LED 53R is not arranged at the center (hereinafter collectively referred to as two). Sometimes referred to as a pair of red light separation plates.) Of the 52R, one of the substrates 51 The red light separating plate 52R disposed on one end (hereinafter, referred to as a first end) E1 has a red LED 53R disposed 1.5 w away from the first end E1. . The red light separating plate 52R disposed on the other end (hereinafter, referred to as a second end) E2 side of the substrate 51 is positioned 1.5 w away from the second end E2. A red LED 53R is arranged.
- the red light separating plate 52R arranged on one end E1 side of the pair of red light separating plates 52R is referred to as the first red light separating plate.
- the red light separating plate 52R disposed on the other end E2 side of 52R-1 and ⁇ is referred to as a second red light separating plate 52R-2.
- the first red light separating plate 52R-1 transmits 50% of the light emitted from the red LED 53R arranged 1.5 w away from the first end E1 and reflects 50% of the light.
- the position is 1.5w away from the second end E2, that is, a pair.
- the position C1 sandwiched between the green light separating plate 52G and the blue light separating plate 52B disposed between the pair of red light separating plates 52R, and where the LED 53 is not disposed is the first red light
- the second red light separation plate 52R-2, which is an apparent emission source of the red light reflected by the separation plate 52R-1, is a red LED 53R that is arranged 1.5w away from the second end E2. Transmits 50% of the light emitted from and reflects 50%.
- the position C1 at the center of the green light separating plate 52G and the blue light separating plate 52B disposed between the pair of red light separating plates 52R and where the LED 53 is not disposed is the second red light separating plate. It is an apparent source of red light reflected by the plate 52R-2. From the above description, the apparent red light reflected by the first red light separation plate 52R-1 The upper emission source and the apparent emission source of the red light reflected by the second red light separation plate 52R-2 are both a green light separation plate disposed between the pair of red light separation plates 52R. It is the position C1 that is the center of 52G and the blue light separating plate 52B and where the LED 53 is not arranged.
- two green light separating plates 52G that are arranged 3w apart and have no green LED 53G between them (hereinafter collectively referred to as a pair of green light separating plates) 52G
- a green LED 53G is disposed 1.5 W away from the one end E1.
- the green LED 53G is disposed at a position 1.5 w away from the green light separating plate 52G disposed on the second end E2 side in the direction of the other end E2.
- the green light separating plate 52G disposed on one end E1 side is referred to as a first green light separating plate.
- the green light separating plate 52G, which is disposed on the other end E2 side, is referred to as a second green light separating plate 52G-2.
- the first green light separation plate 52G-1 transmits 50% of the light emitted from the green LED 53G arranged 1.5 w away from the first end E1 and reflects 50% of the light.
- a position 1.5W away from the second end E2 that is, a pair
- the center of the blue light separating plate 52B and the red light separating plate 52R disposed between the green light separating plate 52G and the LED 53 is disposed and intersects the position C2.
- the position C2 which is the center of the blue light separating plate 52B and the red light separating plate 52R disposed between the pair of green light separating plates 52G and where the LED 53 is not disposed, is the first green light separating position. It is an apparent emission source of the green light reflected by the plate 52G-1.
- the second green light separation plate 52G-2 is located 1.5w away from the second end E2. Transmits 50% of the light emitted from the green LED 53G and reflects 50%.
- the position C2 which is the center of the blue light separating plate 52B and the red light separating plate 52R disposed between the pair of green light separating plates 52G and where the LED 53 is not disposed, is the second green light separating plate. It is an apparent emission source of the green light reflected by the plate 52G-2. From the above description, the apparent emission source of the green light reflected by the first green light separation plate 52G-1 and the apparent emission of the green light reflected by the second green light separation plate 52G-2 Originally, both are the center of the blue light separating plate 52B and the red light separating plate 52R disposed between the pair of green light separating plates 52G, and the LED 53 is disposed !, na! /, Position C2 It becomes.
- the first end portion of two blue light separating plates 52B that are arranged 3w apart and have no blue LED 53B between them (hereinafter, collectively referred to as a pair of blue light separating plates) 52B
- a blue LED 53B is arranged 1.5 w away from the first end E1.
- a blue LED 53B is arranged 1.5 W away from the other end E2.
- the blue light separating plate 52B disposed on one end E1 side is referred to as the first blue light separating plate 52B 1
- the blue light separating plate 52B disposed on the other end E2 side is referred to as a second blue light separating plate 52B-2.
- the first blue light separation plate 52B-1 is located 1.5 w away from the first end E1. 50% of the light emitted from the blue LED 53B is reflected and reflected by 50%.
- a position 1.5W away from the second end E2 that is, a pair
- the center of the red light separation plate 52R and the green light separation plate 52G disposed between the blue light separation plate 52B and the LED 53 is disposed, and intersects with the position C3.
- the center C3 between the red light separation plate 52R and the green light separation plate 52G disposed between the pair of blue light separation plates 52B, and where the LED 53 is not disposed is located at the position C3 of the first blue light separation plate. It is an apparent emission source of the blue light reflected by the plate 52B-1.
- the second blue light separating plate 52B-2 transmits 50% of the light emitted from the blue LED 53B arranged 1.5 w away from the second end E2 and reflects 50% of the light.
- a position 1.5 w away from the first end E1 direction i.e., a pair of blue lights This is the center between the red light separation plate 52R and the green light separation plate 52G disposed between the light separation plates 52B, and intersects the position C3 where the LED 53 is disposed.
- the center C3 of the red light separation plate 52R and the green light separation plate 52G disposed between the pair of blue light separation plates 52B and the position C3 where the LED 53 is not disposed is the second blue light separation plate. It is an apparent emission source of the blue light reflected by the plate 52B-2. From the above description, the apparent emission source of the blue light reflected by the first blue light separation plate 52B-1 and the apparent emission of the blue light reflected by the second blue light separation plate 52B-2 Originally, both are the center of the red light separating plate 52R and the green light separating plate 52G disposed between the pair of blue light separating plates 52B, and the LED 53 is disposed !, na! /, Position C3. It becomes.
- the red LED 53R, the green LED 53G, the blue LED 53B, the red light separation plate 52R, the green light separation plate 52G, and the blue light separation plate 52B are arranged.
- a virtual image 53B 'of the blue LED 53B is generated between the red LED 53R and the green LED 53G
- a virtual image 53R' of the red LED 53R is generated between the green LED 53G and the blue LED 53B
- the blue LED 53B and the red LED 53R are generated.
- a virtual image 53G 'of the green LED 53G is generated.
- the number of the arranged LEDs 53 can be apparently increased in the light source unit 50. Since the apparent number of LEDs 53 increases, it is possible to irradiate a wide area with a small number of LEDs 53.
- the backlight device 20 can reduce the number of LEDs 53 to be arranged, as compared with a backlight device without the light separation plate 52.
- standard side emitters manufactured by LUMILEDS can be arranged at a pitch of 24 mm in the power light source unit 50 that is recommended to be arranged at a pitch of 12 mm, and the number of LEDs 53 to be arranged is reduced to about half. It becomes possible.
- knock light device 20 can reduce the cost of manufacturing. In addition, it is possible to reduce the power consumed during use.
- the backlight device 20 including the light source unit 50 can efficiently mix red light, green light, and blue light emitted from each LED 53 to generate white light.
- the red LED 53R, the green LED 53G, and the blue LED 53B are, for example, as shown in FIGS. 14A and 14B, the distance between the optical axis of the red LED 53R and the optical axis of the green LED 53G is w, and the optical axis of the green LED 53G and the blue The distance between the optical axis of the LED 53B is w, and the distance between the optical axis of the blue LED 53B and the optical axis of the red LED 53R is 4w.
- a virtual image 53 ' is generated between the LEDs 53, such that the red LED 53R, the green LED 53G, and the blue LED 53B are alternately arranged. That is, red light, green light and blue light emitted from each LED 53 are efficiently mixed. Thus, white light can be generated.
- the number of blue LEDs 53B disposed between the red light separation plate 52R and the green light separation plate 52G is one, and the number of the blue LEDs 53B is set between the green light separation plate 52G and the blue light separation plate 52B.
- the number of the red LEDs 53R disposed in the blue light separation plate 52B and the number of the green LEDs 53G disposed between the blue light separation plate 52R may be two.
- the ratio of the green light included in the light applied to the liquid crystal panel 10 increases.
- the image displayed on the liquid crystal panel 10 can be clearly displayed.
- the light separating plate 52 does not have to have the transmittance and the reflectance of the incident light of 50%.
- the transmittance and the reflectance of the light separating plate 52 are set based on the luminance of light emitted from each LED 53 disposed on the substrate 51.
- the light source unit 50 allows the light emitted from each LED 53 Due to the difference in brightness, it is possible to reduce unevenness in brightness and color generated in light incident on the diffusion plate 42. In other words, the light that also emits the overall power of the main surface of the diffusion plate 42 has less unevenness in brightness and color.
- the green light emitted from the green LED D53Ga adjacent to the blue LED 53B! Has a luminance of 80 (however, the luminance is shown as a relative value when the average value of the luminance of the green light emitted from each green LED 53G is assumed to be 100).
- the luminance of the green light emitted from the LED 53Gb is 120, it is as described below.
- a blue light separation plate 52B and a green light separation plate 52Ga are disposed between the green LED 53Ga and the blue LED 53B, and a green light separation plate 52Gb and a red light separation plate 52R are provided between the red LED 53R and the green LED 53Gb. Is arranged. That is, two green light separation plates 52Ga and 52Gb are arranged between the green LED 53Ga and the green LED 53Gb.
- the green light separation plates 52Ga and 52Gb both reflect 50% of the incident green light and When the light is transmitted through the green LED 53Ga, the luminance of the passing light and the ratio of the green light decrease in the traveling direction of the light emitted from the green LED 53Ga. In the traveling direction of the light emitted from the green LED 53Gb, the luminance of the passing light and the ratio of the green light are high. Accordingly, the light incident on the diffusion plate 42 has uneven brightness and color.
- the transmittance and the reflectance of the light separation plate 52 based on the brightness of the light emitted from each LED 53 disposed on the substrate 51, the brightness and the The color unevenness is reduced, and the light emitted from the entire main surface of the diffusion plate 42 has less brightness and color unevenness.
- the liquid crystal display device 1 may include a light guide type backlight device 106 in which the light source unit 50 is provided on a side surface of the light guide plate 105, as shown in FIG.
- the light source unit 50 it is possible to reduce the number of LEDs 53 to be arranged even in the light guide type backlight device 106.
- the knock light device 20 may be provided with a light source unit 110 as shown in FIGS. 18A and 18B instead of the light source unit 50.
- a light source unit 110 provided in the knock light device 20 will be described as a second embodiment of the present invention.
- description of members equivalent to those of the light source unit 50 is omitted, and the same reference numerals are given in the drawings.
- the positional force of the virtual image 53 'of the red LED 53R, the virtual image 53G' of the green LED 53G, and the virtual image 53B 'of the blue LED 53B formed by the light separating plate 52B are as described below. As shown in FIGS.
- the light source unit 110 includes a red light separating plate 52R, a green light separating plate 52G, a blue light separating plate 52B, a red LED 53R, a green LED 53G, and a blue light separating plate 52R on a substrate 51.
- the LED 53B and the LED 53B are arranged.
- the number of green light separating plates 52G arranged on the substrate 51 is twice the number of red light separating plates 52R and blue light separating plates 52B, and the number of green LEDs 53G is the number of red LEDs 53R and blue LEDs 53B. Double the number.
- the plurality of red light separating plates 52R are arranged so that the pitch of 3w and the pitch of 5w are repeated.
- the red light separating plates 52R are arranged on the substrate 51 at a pitch of 8w, and the remaining (the first red light separating plates 52R-1) are On the substrate 51, it is arranged at a pitch of 8w at a position shifted by 3w from the second red light separating plate 52R-2 along the direction of the second end E2.
- the blue light separating plate 52B is arranged on the substrate 51 so as to be shifted by 4w from the red light separating plate 52R in the direction of the second end E2. That is, the blue light separating plate 52B is arranged so as to be shifted by 4w from the red light separating plate 52R in the direction of the second end E2, and the pitch of 3w and the pitch of 5w are repeated.
- the green light separating plates 52G are arranged one by one at a position separated by w from each of the red light separating plates 52R in a region sandwiched between two adjacent red light separating plates 52R at a pitch of 3w.
- one is disposed at a position separated by w from the blue light separating plate 52B in a region sandwiched between two adjacent blue light separating plates 52B at a pitch of 3w.
- the red light separation plate 52R, the green light separation plate 52G, and the blue light separation plate 52B are arranged on the substrate 51 from the first end E1 side, from the red light separation plate 52R, the green light separation plate 52G,
- the green light separation plate 52G, the red light separation plate 52R, the blue light separation plate 52B, the green light separation plate 52G, the green light separation plate 52G, and the blue light separation portion 52B are arranged at a pitch w so that the arrangement is repeated. ing.
- the red LEDs 53R are arranged between two red light separating plates 52R which are arranged 3w apart from each other, and are arranged one by one at the center of the two green light separating plates 52G. .
- the red LEDs 53R are arranged at the center of two adjacent red light separation plates 52R at an alternate pitch of 8w.
- the blue LED 53B is located between two blue light separation plates 52B that are located 3w apart.
- the two green light separation plates 52G are arranged one by one at the center. That is, the blue LEDs 53B are arranged at the center of two adjacent blue light separating plates 52B with every other 8w pitch.
- the green LED 53G includes a center between the first red light separation plate 52R-1 and the second blue light separation plate 52B2, and a second red light separation plate 52R-2 and the first blue light separation plate 52B. — One at a time, centered with one. That is, the green LEDs 53G are arranged at every other pitch of 4w between two adjacent green light separating plates 52G.
- each light separating plate 52 and each LED 53 are arranged 5w apart.
- the red LED 53R is located 1.5W away from the first end E1 in the direction of the first end E1. Is performed.
- a red LED 53R is disposed 1.5 w away from the second end E2.
- the red light separating plate 52R disposed on one end E1 side is referred to as the first red light separating plate 52R 1.
- the red light separation plate 52R disposed on the other end E2 side is referred to as a second red light separation plate 52R-2.
- the first red light separating plate 52R-1 transmits 50% of the light emitted from the red LED 53R arranged 1.5 w away from the first end E1 and reflects 50% of the light.
- the optical path of the red light reflected by the first red light separation plate 52R-1 is extended in the direction opposite to the traveling direction of the red light, it intersects with the position 1.5W away from the second end E2.
- the green light separating plate 52G is disposed at a distance of w from the first red light separating plate 52R-1 in the direction of the second end E2 and the blue light separating plate 52B at a distance of 2w from the first red light separating plate 52G.
- the position C11 where the LED 53 is not disposed is an apparent emission source of the red light reflected by the first red light separation plate 52R-1.
- the second red light separating plate 52R-2 transmits 50% of the light emitted from the red LED 53R arranged 1.5 w away from the second end E2, and transmits 50% of the light. reflect.
- the optical path of the red light reflected by the second red light separation plate 52R is set in the direction opposite to the traveling direction of the red light. When it is extended to the first end, it intersects a position 1.5w away in the El direction.
- the green light separating plate 52G which is arranged 2 w away from the blue light separating plate 52B, which is arranged w away from the second red light separating plate 52R-2 along the direction of the first end E1.
- the position C12 which is the center of and where the LED 53 is not arranged is an apparent emission source of the red light reflected by the second red light separation plate 52R-2.
- two blue light separation plates (hereinafter, collectively referred to as a pair of blue light separation plates) 52B separated from each other by 5 w are separated by a blue light separation plate disposed on the first end E1 side.
- the separation plate 52B is provided with a blue LED 53B at a position 1.5 w away from the first end E1.
- a blue LED 53B is disposed 1.5 w away from the second end E2 in the direction of the second end E2.
- the blue light separating plate 52B disposed on one end E1 side is referred to as the first blue light separating plate 52B 1
- the blue light separating plate 52B disposed on the second end E2 side is referred to as a second blue light separating plate 52B-2.
- the first blue light separation plate 52B-1 transmits 50% of the light emitted from the blue LED 53B arranged 1.5 w away from the first end E1 and reflects 50% of the light.
- the optical path of the blue light reflected by the first blue light separation plate 52B-1 is extended in the direction opposite to the traveling direction of the blue light, it intersects with the position 1.5W away from the second end E2.
- the second blue light separating plate 52B-2 transmits 50% of the light emitted from the blue LED 53B arranged 1.5 w away from the second end E2, and transmits 50% of the light. reflect.
- the optical path of the blue light reflected by the second blue light separating plate 52B-2 is extended in the direction opposite to the traveling direction of the blue light, the light path intersects a position 1.5w away from the first end E1.
- the red light separation plate 52R which is arranged at a distance w from the second blue light separation plate 52B-2 along the first end E1 direction, and the green light separation plate 52G, which is arranged 2w away from the second blue light separation plate 52B-2.
- C14 Force This is the apparent emission source of the blue light reflected by the second blue light separation plate 52B-2.
- the green light separating plate 52G arranged on the first end E1 side has a green LED 53G disposed 1.5 w away from the first end E1 in the direction of E1, and a green light separation plate 52G disposed on the second end E2 side has a second end E2. Green LED53G is placed 1.5w away in the E2 direction!
- the green light separating plate 52 that is disposed on the first end E1 side.
- G has a green LED 53G disposed 1.5 w away from the first end E1 in the direction of E1
- a green light separation plate 52G disposed on the second end E2 side has a second end E2.
- Green LED53G is placed 1.5w away in the E2 direction!
- the first end The one disposed on the E1 side is referred to as a first green light separating plate 52G-1 and the one disposed on the second end E2 side is referred to as a second green light separating plate 52G-2.
- the two green light separating plates 52G arranged between the two blue light separating plates 52B spaced apart by 3w the one arranged on the first end E1 side of the two green light separating plates 52G is referred to as a third one.
- the second green light separating plate 52G-4 is located on the second end E2 side, and the fourth green light separating plate 52G-4.
- the first green light separation plate 52G-1 transmits 50% of the light emitted from the green LED 53G arranged 1.5 w away from the first end E1 and reflects 50% of the light.
- the optical path of the green light reflected by the first green light separation plate 52G-1 is extended in the direction opposite to the traveling direction of the green light, the light path intersects with the position 1.5W away from the second end E2.
- the second green light separating plate 52G-2 is disposed 2w apart from the first green light separating plate 52G-1 along the direction of the second end portion E2 and 2w away from the first green light separating plate 52G-1.
- the emission source is the same as the apparent emission source of the blue light reflected by the first blue light reflector 52B-1.
- the first blue light reflecting plate 52B is located at the center C14 between the second green light separating plate 52R-2 and the first red light separating plate 52R-1 and where the LED 53 is not arranged.
- the virtual source of the blue light reflected by 11 and the first green light reflector 52G The virtual image of the LED ED53 (the blue light source) that is the apparent source of the green light reflected by 11 This is called a virtual image of a green LED.) 53BG 'is formed.
- the virtual image 53BG ′ of the blue-green LED apparently emits green light to the green light separating means 52G side and emits blue light to the red light separating plate 52R side.
- the second green light separating plate 52G-2 transmits 50% of the light emitted from the green LED 53G arranged 1.5 w away from the second end E2 and reflects 50% of the light.
- the light path of the green light reflected by the second green light separation plate 52G-2 is extended in the direction opposite to the traveling direction of the green light, the light crosses a position 1.5w away from the first end E1.
- the second green light separating plate 52G-1 which is arranged w away from the second green light separating plate 52G-1 along the direction of the first end E1 and the second green light separating plate 52G-1 which is arranged 2w apart
- the position C13 which is the center of the red light separating plate 52R-2 and where the LED 53 is not arranged is an apparent emission source of the green light reflected by the second green light separating plate 52G-2. Therefore, the apparent emission source of the green light reflected by the second green light separation plate 52G-2 is the same as the apparent emission source of the blue light reflected by the first blue light reflection plate 52B-1. Be the same.
- the first blue light reflecting plate 52B is located at the center C13 between the first green light separating plate 52G-1 and the second red light separating plate 52R-2 and where the LED 53 is not arranged.
- the third green light separating plate 52G-3 transmits 50% of the light emitted from the green LED 53G arranged 1.5 w away from the first end E1 and reflects 50% of the light.
- the optical path of the green light reflected by the third green light separating plate 52G-3 is extended in the direction opposite to the traveling direction of the green light, it intersects with the position 1.5W away from the second end E2.
- the second green light separating plate 52G-3 is separated from the third green light separating plate 52G-3 by w along the second end E2 direction.
- the position C12 which is the center of the fourth green light separating plate 52G-4 that is disposed and the first blue light separating plate 52G-1 that is disposed 2w apart, and where the LED 53 is not disposed is
- the apparent source of the green light reflected by the third green light separating plate 52G-3 is, therefore, the apparent source of the green light reflected by the third green light separating plate 52G-3 is This is the same as the apparent source of the red light reflected by the second red light reflector 52R-2.
- the second red light reflecting plate 52R A virtual image of LE D53, which is the apparent source of red light reflected by 2 and the apparent source of green light reflected by the third green light reflector 52G (hereinafter referred to as red This is called a virtual image of a green LED.) 53RG is formed.
- the blue-green LED virtual image 53BG apparently emits green light toward the green light separating means 52G and emits red light toward the blue light separating plate 52B.
- the fourth green light separating plate 52G-4 transmits 50% of the light emitted from the green LED 53G arranged 1.5 w away from the second end E2, and reflects 50% of the light.
- the optical path of the green light reflected by the fourth green light separating plate 52G-4 is extended in the direction opposite to the traveling direction of the green light, it intersects with the position 1.5W away from the first end E1.
- the third green light separating plate 52G-3 is located 2 w away from the fourth green light separating plate 52G-4 along the first end E1 direction.
- the green light reflected by the fourth green light separation plate 52G-4 which is the center of the second blue light separation plate 52G-4 and is located at the center with the LED 53! Therefore, the apparent emission source of the green light reflected by the fourth green light separation plate 52G-4 is the red light reflected by the first red light reflection plate 52R-1.
- the first red light reflecting plate 52R is located at the center C11 between the third green light separating plate 52G-3 and the second blue light separating plate 52B-2 and where the LED 53 is not arranged.
- Red which is the apparent source of red light reflected by 1 and the apparent source of green light, reflected by fourth green light reflector 52G-4
- a green image 53RG 'of the green LED is formed.
- the light source unit 110 The LED 53 is interposed between the red LED 53R and the green LED 53G, and the virtual image of the blue-green LED emits green light in the direction of the red LED 53R and emits blue light in the direction of the green LED 53G.
- 53BG ' is formed, sandwiched between the blue LED 53B and the green LED 53G, and the LED 53 is arranged !!, na! /, Emits green light in the direction of the blue LED 53B and emits red light in the direction of the green LED 53G.
- a red-green LED virtual image 53RG is formed.
- the number of arranged LEDs 53 can be apparently increased.
- a virtual image 53 ' is formed such that the optical path of red light and the optical path of blue light appear alternately between the optical paths of green light. Therefore, the backlight device 20 including the light source unit 110 efficiently mixes the red light, the blue light, and the green light, which is approximately twice the amount of the red light and the blue light, and displays the mixed light on the liquid crystal panel 10. This makes it possible to generate white light capable of clearly displaying the projected image.
- knock light device 20 may include a light source unit 120 as shown in FIGS. 20A and 20B instead of light source unit 50 and light source unit 110.
- a light source unit 120 provided in the knock light device 20 will be described as a third embodiment of the present invention.
- description of members equivalent to those of the light source unit 50 is omitted, and the same reference numerals are given in the drawings.
- the light source unit 120 includes a green light separation plate 52G, a red light blue light separation plate 52RB, a red LED 53R, a green LED 53G, and a blue LED 53B disposed on a substrate 51. It is the configuration that was done.
- the red light / blue light separation plate 52RB transmits 50% of the incident red light and blue light, reflects 50%, and transmits 100% of the incident green light.
- the red light blue light separation plate 52RB By reflecting 50% of the emitted red light and blue light, a virtual image 53R 'of the red LED 53R and a virtual image 53B' of the blue LED 53B, which are apparent emission sources of the reflected red light and blue light, are formed. .
- a virtual image 53R 'of the red LED 53R is formed around the red light blue light separation plate 52RB at a position facing the red LED 53R that emits the red light incident on the red light blue light separation plate 52RB. I do.
- a virtual image 53B 'of the blue LED 53B is formed around the red light / blue light separation plate 52RB at a position facing the blue LED 53B that has emitted blue light incident on the red light / blue light separation plate 52RB.
- red light / blue light separating plate 52RB for example, a laminate of a red light separating plate 52R and a blue light separating plate 52B is used.
- the arrangement of the red light blue light separation plate 52RB, the green light separation plate 52G, the red LED 53R, the green LED 53G, and the blue LED 53B, and the virtual image 53R 'and blue color of the red LED 53R formed by the red light blue light separation plate 52RB The virtual image 53G 'of the green LED 53G formed by the virtual image 53B' of the LED 53B and the green light separating plate 52G will be described.
- the green light separating plates 52G are arranged at a pitch of 4w along the longitudinal direction of the substrate 51. Further, the red-blue light separating plates 52RB are arranged at a pitch of 4w along the longitudinal direction on the substrate 51, at positions apart from each green light separating plate 52G by w.
- the green LEDs 53G are arranged every other two at the center of the green light separating plate 52G adjacent to each other.
- the two green LEDs 53G arranged at the center of the green light separating plate 52G adjacent to each other are arranged at predetermined intervals along the direction of the main surface of the green LED 53G.
- one of the two green LEDs 53G arranged at the center of the adjacent green light separation plate 52G is arranged on a straight line (hereinafter, referred to as a first straight line) L1 along the longitudinal direction of the substrate 51,
- the other is arranged on a straight line (hereinafter, referred to as a second straight line) L2 parallel to the first straight line. That is, the green LEDs 53G are arranged on the first straight line L1 and the second straight line L2, and the pitch of the green LEDs 53G arranged on each straight line LI, L2 is 4w.
- the green LED 53G is replaced with a second green LED 53G-2!
- the red LEDs 53R are arranged one by one at every other position on the first straight line LI and at the center of the adjacent red light blue light separation plates 52RB.
- the blue LEDs 53B are placed on the second straight line L2 parallel to the first straight line L1 and at the center of the red light blue light separating plates 52RB adjacent to each other, one by one every other. Be placed.
- the distance between the optical axis of the adjacent green LED 53G and the optical axis of the red LED 53R without passing through the light separating plate 52 is w.
- each LED 53 and each light separating plate 52 two green light separating plates 52G (hereinafter collectively referred to) are arranged at a pitch of 4w and have no LED 53 arranged therebetween.
- the green light separating plate 52G disposed on the first end E1 side of the substrate 51 is on the first and second straight lines LI, L2 and The first end E is located 2 w away in the direction 1 !!
- the green light separating plate 52G disposed on the second end E2 side of the substrate 51 is on the first and second straight lines LI, L2 and is separated by 2 w in the direction of the second end E2.
- Green LED53G is placed at the position.
- the green light separating plate 52G disposed on the first end E1 side is referred to as the first green light separating plate 52G.
- the green light separating plate 52G disposed on the second end E2 side is referred to as a second green light separating plate 52G-2.
- the first green light separation plate 52G-1 is located on the first and second straight lines LI, L2 separated by 2 w in the direction of the first end E1.
- the second end portion The green LED 53G is arranged at a position 2w away from the direction E2 !, na! / ,.
- the first green light separating plate 52G-1 is disposed at a distance of 2 w in the direction of the first end E1 and has a 50% of light emitted from the first and second green LEDs 53G-1 and 53G-2. Transmits% and reflects 50%. After being emitted from the first green LED 53G-1, as shown in FIG. 21A.
- the light path of the green light reflected by the first green light separation plate 52G-1 is extended in the direction opposite to the traveling direction of the green light, the light path intersects a position 2w away in the direction of the second end E2. More specifically, as shown in FIG. 21B, it is on the first straight line L1 and intersects with the position C21a which is the center of the pair of green light separating plates 52G.
- the light path of the green light emitted from the second green LED 53G-2 and reflected by the first green light separation plate 52G-1 is changed in the direction opposite to the traveling direction of the green light.
- it extends to the second end, it intersects with a position 2w away in the direction of the second end E2. More specifically, as shown in FIG. 21B, it intersects a position C21b on the second straight line L2 and being the center of the pair of green light separating plates 52G.
- FIG. 21A is a cross-sectional view taken along a straight line L1 shown in FIGS. 20A and 20B
- FIG. 21C is a cross-sectional view taken along a straight line L2 shown in FIGS. 20A and 20B.
- the second green light separation plate 52G-2 is disposed at a distance of 2 w in the direction of the second end E2, and 50% of the light emitted from the first and second green LEDs 53G-1 and 53G-2. Is transmitted and 50% is reflected.
- FIG. 21A the light path of the green light emitted from the first green LED 53G-1 and reflected by the first green light separation plate 52G-1 is extended in a direction opposite to the traveling direction of the green light. Then, it intersects a position 2w away from the first end E1. More specifically, as shown in FIG. 21B, it intersects a position C21a on the first straight line L1 and the center of the pair of green light separating plates 52G.
- the light path of the green light emitted from the second green LED 53G-2 and reflected by the first green light separation plate 52G-1 is changed in the direction opposite to the traveling direction of the green light.
- it intersects a position 2w away in the direction of the first end E1. More specifically, as shown in FIG. 21B, it is on the second straight line L2, is the center of the pair of green light separating plates 52G, and intersects the position C21b where the LED 53 is located! .
- the first and second straight lines LI and L2 are the centers of the pair of green light separation plates 52G.
- the positions C21a and C21b above and where the LED 53 is not arranged are apparent emission sources of the green light reflected by the second green light separation plate 52G-2.
- the apparent emission source of the green light reflected by the first green light separation plate 52G-1 and the apparent emission of the green light reflected by the second green light separation plate 52G-2 The origin is both on the first and second straight lines LI and L2, the centers of the pair of green light separating plates 52G, and the positions C21a and C21b where the LED 53 is not arranged.
- red light blue light separation plates 52RB (hereinafter, collectively referred to as a pair of red light blue light separation plates) that are arranged at a pitch of 4w and have no LED 53 arranged between them.
- the red LED 53R and the blue LED 53B are arranged at a position 1.5 w away from the first end E1 in the red light blue light separation plate 52RB arranged on the first end E1 side of 51.
- the red light blue light separating plate 52RB arranged on the second end E2 side of the substrate 51 has a red LED 53R and a blue LE D53B arranged 1.5 w away from the second end E2. Is done.
- the red light blue light component disposed on the first end E1 side of the pair of red light blue light separation plates 52RB as shown in FIG.
- the release plate 52RB is referred to as a first red light blue light separation plate 52RB-1 and is located on the second end E2 side of the red light blue light separation plate 52RB.
- the plate 52RB-2 and the first red light / blue light separation plate 52RB-1 separate 50% of the light emitted from the red LED 53R and the blue LED 53B, which are arranged 2w apart in the first end El direction. Transmits and reflects 50%. As shown in FIG.
- the optical path of the blue light reflected by the first red light / blue light separation plate 52RB-1 after being emitted from the blue LED 53B is extended in the direction opposite to the traveling direction of the blue light
- the second end intersects a position 2w away in the direction E2. More specifically, as shown in FIG. 21B, it is on the second straight line L2, is the center of the pair of red light blue light separation plates 52RB, and intersects the position C22b where the LED 53 is not arranged.
- the position C22a on the first straight line L1 which is the center of the pair of red light blue light separation plates 52RB, and where the LED 53 is not disposed is determined by the first red light blue light separation plate 52RB-1. It is an apparent emission source of the reflected red light. Also, on the second straight line L2, it is the center of the pair of red light blue light separation plates 52RB, and the LED 53 is disposed!
- the position C22b is located at the first red light blue light separation plate 52RB-. It is the apparent source of blue light reflected by 1.
- the second red light blue light separation plate 52RB-2 transmits 50% of the light emitted from the red LED 53R and the blue LED 53B arranged at a distance of 2 w in the direction of the second end E2, and transmits 50% of the light. Is reflected.
- FIG. 21A when the optical path of the red light reflected by the first red light blue separation plate 52RB-1 after being emitted from the red LED 53R is extended in the direction opposite to the traveling direction of the red light, the first End Intersects a position 2w away in the direction of E1. More specifically, as shown in FIG. 21B, it is on the first straight line L1, is the center of the pair of red light blue light separation plates 52RB, and is located at the position where the LED 53 is located! I do.
- the first end intersects a position 2w away in the direction of E1. More specifically, as shown in FIG. 21B, it is on the second straight line L2, is the center of the pair of red light blue light separation plates 52RB, and intersects the position C22b where the LED 53 is not arranged.
- the position C22a which is the center of the pair of red light blue light separation plates 52RB, is on the first straight line L1, and where the LED 53 is not arranged, is determined by the second red light blue light separation plate 52RB-2. It is an apparent emission source of the reflected red light. Also a pair of red light The center of the blue light separating plate 52RB, on the second straight line L2, and the LED 53 is disposed !, where the position C22b is the blue reflected by the second red light blue light separating plate 52RB-2. It is an apparent source of colored light.
- the apparent source of the red light reflected by the first red light blue light separation plate 52RB-1 and the red light reflected by the second red light blue light separation plate 52RB-2 The apparent emission sources are both on the first straight line L1 and at the position C22a which is the center of the pair of red light / blue light separation plates 52RB.
- the apparent source of the blue light reflected by the first red light blue light separation plate 52RB-1 and the apparent blue light reflected by the second red light blue light separation plate 52RB-2 are both on the second straight line L2 and at the position C22b which is the center of the pair of red light / blue light separation plates 52RB.
- the center of the red light blue light separation plate 52RB arranged at a pitch of 4w is on the first straight line L1, and the position C22a where the LED 53 is not arranged is 2w away from this position.
- a virtual image 53R 'of the red LED 53R which is an apparent emission source of the red light reflected by the two red light blue light separation plates 52RB, is generated.
- the red LED 53R, the green LED 53G, the blue LED 53B, the green light separation plate 52G, and the red-blue light separation plate 52RB are disposed, the red LED 53R and the green light A virtual image 53R 'of the red LED 53R and a virtual image 53G' of the green LE D53G occur between the LED 53G and a virtual image 53B 'of the blue LED 53B and a virtual image 53G' of the green LED 53G between the blue LED 53B and the green LED 53G. Occurs.
- the number of the arranged LEDs 53 can be apparently increased.
- red LEDs 53R and green LEDs 53G are alternately arranged.
- the virtual image 53R ' is generated such that the rows and the blue LEDs 53B and the green LEDs 53G are alternately arranged! Therefore, the backlight device 20 including the light source unit 120 efficiently mixes the red light, the blue light, and the green light having the amount of light approximately twice that of the red light and the blue light, and displays the mixed light on the liquid crystal panel 10. This makes it possible to generate white light capable of clearly displaying the projected image.
- knock light device 20 may include a light source unit 130 as shown in FIGS. 22A and 22B instead of light source unit 50, light source unit 110, and light source unit 120.
- a light source unit 130 provided in knock light device 20 will be described as a fourth embodiment of the present invention.
- description of members equivalent to those of the light source unit 50 is omitted, and the same reference numerals are given in the drawings.
- the light source unit 120 has a configuration in which a three-primary-color light separation plate 52T, a red LED 53R, a green LED 53G, and a blue LED 53B are arranged on a substrate 51.
- the three primary color light separation plate 52T transmits 50% of the incident red light, blue light, and green light and reflects 50%.
- the three-primary-color light separation plate 52T-1 forms a virtual image 53R ′ that is an apparent emission source of the reflected light by reflecting 50% of the incident red light, green light, and blue light. More specifically, the three-primary-color light separating plate 52T is provided with a virtual image 53R of the red LED 53R at a position opposite to the red LED 53R that emits the red light incident on the three-primary-color light separating plate 52T with the three-primary-color light separating plate 52T as the center. Form '.
- a virtual image 53G 'of the green LED 53G is formed around the three-primary-color light separation plate 52T at a position facing the green LED 53G that emits green light incident on the three-primary-color light separation plate 52T.
- a virtual image 53B 'of the blue LED 53B is formed around the three-primary-color light separation plate 52T at a position facing the blue LED 53B that has emitted blue light incident on the three-primary-color light separation plate 52T.
- the three-primary-color light separation plate 52T includes, on a substrate 131, a first SiO layer 132 having a thickness of 44.45 nm, and a first Nb layer having a thickness force of 5.72 nm.
- the three primary color light separation plates 52T a laminate of a red light separation plate 52R, a green light separation plate 52G, and a blue light separation plate 52B can be used.
- the three primary color light separating plates 52T are formed so that the optical characteristics with respect to the light having an incident angle of 10 ° are the desired characteristics.
- the three primary color light separation plates 52T are arranged at a pitch of 4w along the longitudinal direction of the substrate 51.
- every other one of the red LED 53R, the blue LED 53B, and the two green LED 53G power direction in the longitudinal direction of the substrate 51 that is, the three primary color light separation plates 52T are arranged side by side. Are arranged in a row at a pitch w.
- a plurality of LEDs 53 arranged in a line at a pitch of w between the three primary color light separation plates 52T is referred to as an LED array A1.
- two three-primary-color light separation plates 52T in which the LED array A1 is not arranged are collectively referred to as a pair of three-primary-color light separation plates 52T.
- the LED array A1 includes four LEDs 53 arranged in a line from one side in the order of a green LED 53G, a red LED 53R, a blue LED 53B, and a green LED 53G. Further, the LED array A1 is arranged such that the green LEDs 53G and the three primary color light separation plates 52T at both ends are separated from each other by 0.5 w.
- one of the pair of three primary color light separation plates 52T is provided with the LED array A1 on the first end E1 side of the substrate 51, and the other is provided with the substrate 51.
- the LED array A1 is arranged on the second end E2 side.
- the three primary color light separation plates 52T in which the LED array A1 is arranged on the first end E1 side are referred to as the first primary color light separation plates 52T.
- the first three primary color light separation plate 52T-1 has a red LED 53R arranged 2.5 w away from the first end E1 and a blue LED 53B 1.5 w away from the first end E 1. You In addition, a green LED 53G is arranged at a distance of 0.5w and 3.5w.
- the first three primary color light separating plates 52T-1 transmit 50% of the light emitted from the red LED 53R arranged in the direction of the first end E1, and reflect 50%.
- the red light reflected by the first three primary color light separation plates 52T-1 is extended in the opposite direction to the traveling direction, the light is separated by 2.5w in the direction of the second end E2, that is, in the region where the LED 53 is not arranged. Intersects the position C31. Therefore, the apparent emission source of the red light reflected by the first three primary color light separation plates 52T-1 is 2.5w away from the first three primary color light separation plates 52T-1 in the direction of the second end E2.
- Position C31 Position C31.
- the first three primary color light separation plates 52T-1 transmit 50% of the light emitted from the blue LED 53B disposed in the direction of the first end E1, and reflect 50%.
- the blue light reflected by the first three primary color light separation plates 52T-1 is extended in the opposite direction to the traveling direction, the light is separated by 1.5w toward the second end E2, that is, in the region where the LED 53 is not arranged.
- Crosses location C32 the apparent emission source of the blue light reflected by the first three primary color light separation plate 52T-1 is 1.5w away from the first three primary color light separation plate 52T-1 in the direction of the second end E2.
- Position C32 is
- the first three primary color light separating plates 52T-1 transmit 50% of the light emitted from the green LED 53G arranged in the direction of the first end E1, and reflect 50%.
- the green light reflected by the first three primary color light separation plates 52T-1 is extended in the opposite direction to the traveling direction, the green light is separated by 0.5w in the direction of the second end E2, that is, in the region where the LED 53 is not arranged.
- the apparent emission source of the green light reflected by the first three-primary-color light separating plate 52T-1 is 0.5w away from the first three-primary-color light separating plate 52T-1 in the direction of the second end E2.
- Position C33 and position C34 3.5w away.
- the second three-primary-color light separating plate 52T-2 has a red LED 53R placed 1.5 w away from the first end E2, and a blue LED 53B placed 2.5 w away.
- a green LED 53G is disposed at a position separated by 0.5w and 3.5w.
- the second primary color light separating plate 52T-2 is arranged in the direction of the second end E2, transmits 50% of the light emitted from the red LED 53R, and reflects 50%.
- the first end It intersects with the position in the El direction, that is, 1.5 w away from the area where the LED 53 is not arranged.
- Position C31 Therefore, the apparent emission source of the red light reflected by the second three-primary-color light separation plate 52T-2 is 2.5w away from the first three-primary-color light separation plate 52T-1 in the direction of the second end E2. Position C31.
- the second three-primary-color light separation plate 52T-2 transmits 50% of the light emitted from the blue LED 53B arranged in the direction of the second end E2 and reflects 50%.
- the blue light reflected by the second primary color light separation plate 52T-2 is extended in the opposite direction to the traveling direction, the light is separated by 2.5w toward the first end E1, that is, the area where the LED 53 is not arranged. Intersect with the position.
- the second three primary color light separation plate 52T-1 transmits 50% of the light emitted from the green LED 53G arranged in the direction of the second end E2 and reflects 50%.
- the green light reflected by the second primary color light separation plate 52T-2 is extended in the opposite direction to the traveling direction, the light is separated by 0.5w in the direction of the first end E1, that is, in the region where the LED 53 is not arranged. Crosses position C34 and position C33 3.5w away.
- the position 0.5W away from the second three-primary-color light separation plate 52T-2 in the direction of the first end E1 is 3.5w away from the first three-primary-color light separation plate 52T-1 in the direction E2.
- the position 3.5 w away from the second three primary color light separation plate 52T-2 in the direction of the first end E1 is 0.50 in the direction of the second end E2 from the first three primary color light separation plate 52T-1.
- Position 5w away Matches C33. Therefore, the apparent emission source of the green light reflected by the first three-primary-color light separation plate 52T-2 is from the first three-primary-color light separation plate 52T-1 to the second end E2.
- the position is C33 at a distance of 0.5 w in the direction and C34 at a distance of 3.5 w in the direction.
- the apparent source of the red light reflected by the first three-primary-color light separation plate 52T-1 and the apparent red light reflected by the second three-primary-color light separation plate 52T-2 Is a position C31 2.5 w away from the first three primary color light separation plates 52T-1 in the direction of the second end E2.
- the apparent source of blue light reflected by the first three primary color light separation plate 52T-1 and the apparent source of blue light reflected by the second three primary color light separation plate 52T-2 Means a position C32 that is 1.5 w away from the first three primary color light separation plates 52T-1 in the direction of the second end E2.
- the apparent source of the green light reflected by the first three primary color light separation plate 52T-1 and the apparent source of the green light reflected by the second three primary color light separation plate 52T-2 are the position C33 which is 0.5w away from the first three primary color light separation plate 52T-1 in the direction of the second end E2 and the position C34 which is 3.5w away.
- the three primary color light separation plates 52T are sandwiched between the three primary color light separation plates 52T, and the LEDs 53 are arranged.
- the red light and green light reflected by the three primary color light separation plates 52T are disposed on both sides of this region.
- a virtual image 53R 'of the red LED 53R, a virtual image 53G' of the green LED 53G, and a virtual image 53B of the blue LED 53B, which are light and blue light emitting sources, are generated.
- the virtual image 53R of the red LED 53R and the virtual image 53B of the blue LED 53B are respectively located at a position C31, 1.5w away from the first three primary color light separating plate 52T—1 in the direction of the second end E2, and the first three primary colors. It occurs at a position C32 2.5 w away from the light separation plate 52T-1 in the direction of the second end E2. Also, the virtual image 53G 'of the green LED 53G is generated at a position C33 which is 0.5 w away from the first three primary color light separation plate 52T-1 in the direction of the second end E2 and a position C34 which is 3.5 w away.
- the light source unit 130 is sandwiched between the two three primary color light separation plates 52T and In the area where the LED 53 is disposed, a virtual image 53R of the red LED 53R, a virtual image 53G 'of the two green LEDs 53G, and a virtual image 53B of the blue LED 53B are generated in the area.
- the LEs are arranged between the LED arrays A1 arranged on the substrate 51. Since a virtual image 53 of D53 is generated, it is possible to increase the apparent number of LEDs 53 arranged.
- the virtual image 53R ' is formed such that the LED array A1 including the four LEDs 53 arranged in a line in the order of the green LED 53G, the red LED 53R, the blue LED 53B, and the green LE D53G is arranged in a line. Occurs. Accordingly, the backlight device 20 including the light source unit 120 efficiently mixes the red light and the blue light, and the green light twice as much as the red light and the blue light, and clearly displays the image displayed on the liquid crystal panel 10. It is possible to generate white light capable of being used.
- a substrate 141 having substantially the same size as the bottom surface 40a of the housing 40 is used, and instead of the three-primary-color light separation plate 52T, a horizontal length is used.
- the number of LED arrays A1 arranged between the three primary color light separation plates 52M is two or more using the three primary color light separation plates 52M that are almost the same length as the width direction of the bottom surface 40a of the housing 40. Good.
- knock light device 20 With this configuration, the number of light separation plates 52 arranged in the knock light device 20 can be reduced, and thus the number of components required when manufacturing the backlight device 20 can be reduced. Become. Therefore, knock light device 20 can be easily manufactured.
- the backlight device 20 may include a light source unit 150 as shown in FIG. 26 instead of the light source units 50, 110, 120, and 130.
- a light source unit 150 provided in the knock light device 20 will be described as a fifth embodiment of the present invention.
- description of members equivalent to those of the light source units 50, 110, 120, and 130 will be omitted, and the same reference numerals will be given in the drawings.
- the light source unit 150 includes first and second three primary color light separating plates 52L-1 and 52L-2 (hereinafter, when it is not necessary to distinguish them, 52L), a red LED 53R, a green LED 53G, and a blue LED 53B.
- the three-primary-color light separation plate 52L has a horizontal length substantially equal to the length of the substrate 141 in the longitudinal direction. It is arranged on the substrate 141 such that the horizontal direction is along the longitudinal direction of the substrate 141.
- the three primary color light separation plates 52L are arranged at a pitch of w.
- a red LED 53R, a blue LED 53B, and a green LED 53G are separated by 0.5 W from each of the three primary color light separation plates 52L between each of the three primary color light separation plates 52L and both ends Ell and E12 in the width direction of the substrate 141. At a position, they are arranged in a line in a predetermined order along the main surface of each of the three primary color light separation plates 52L.
- the LEDs 53 arranged in a line between each of the three primary color light separation plates 52L and both ends E11 and E12 are referred to as an LED array A2. If it is necessary to distinguish between them, the one facing the first three primary color light separation plate 52L-1 is called the first LED array A2-1, and the second three primary color light separation plate 52L-1 The one facing 1 is called the second LED array A2-2.
- the two LED arrays A2 are arranged in the same arrangement from one end E13 side to the other end E14 side of the substrate 141 in the longitudinal direction. That is, a red LED 53R, a green LED 53G, and a blue LED 53B constituting the first LED array A2-1 are provided via the first three primary color light separation plates 52L-1 and the second three primary color light separation plates 52L-2. The red LED 53R, the green LED 53G, and the blue LED 53B constituting the second LED array A2-2 are opposed to each other.
- the two LED arrays A2 are arranged in an array of a green LED 53G, a red LED 53R, a blue LED 53B, a green LED 53G from one end E13 side to the other end E14 in the longitudinal direction of the substrate 141. It is configured to be arranged in a line while repeating.
- the first three-primary-color light separation plate 52L-1 is moved by the force of arranging the first LED array A2-1 on one end surface E11 side in the width direction of the substrate 141.
- LED53 is not arranged on the end E12 side of
- the second three-primary-color light separation plate 52T-2 has a second LED array A2-2 disposed on the other end E12 side in the width direction of the substrate 141! The LED53 is located on the El 1 side!
- the first three primary color light separation plates 52L-1 transmit 50% of the light emitted from the LEDs 53 constituting the first LED array A2-1 and reflect 50%.
- FIG. 27 is a cross-sectional view taken along line AA ′ in FIG.
- the LEDs 53 constituting the first LED array A2-1 are arranged at a distance of 0.5 w from the first three primary color light separation plates 52L-1.
- the first three primary color light separation plates 52L-1 and the second three primary color light separation plates 52L-2 are arranged at a pitch of w. Therefore, the first LED array A2-1 is located at the center between the first three primary color light separation plates 52L-1 and the second three primary color light separation plates 52L-2.
- a position facing each of the LEDs 53 constituting the light source C41 is an apparent emission source of the red light, green light and blue light reflected by the first three primary color light separation plates 52L-1.
- the second three-primary-color light separation plate 52L-2 transmits 50% of light emitted from each LED 53 constituting the second LED array A2-2 and reflects 50%.
- the second three-primary-color light separation plate 52L-2 when the optical path of the light reflected by the second three-primary-color light separation plate 52L-2 is extended in the direction opposite to the traveling direction, the second three-primary-color light separation plate 52L-2 is centered. It intersects with a position facing each LED 53, in other words, a position symmetrical with respect to each LED 53 with the second three primary color light separation plate 52T-2 as a plane of symmetry.
- Each LED 53 constituting the second LED array A2-2 is arranged at a distance of 0.5 w from the second three primary color light separation plate 52L-2.
- the first three primary color light separation plates 52L-1 and the second three primary color light separation plates 52L-2 are arranged at a pitch of w. Accordingly, the second LED array A2—2 is located at the center of the first three-primary-color light separator 52L-2 and the second three-primary-color light separator 52L-2.
- the position facing each of the LEDs 53 is the position C41 described above, and serves as an apparent emission source of the red light, green light, and blue light reflected by the second three primary color light separation plate 52L-2.
- the arrangement of the LEDs 53 forming the first LED array A2-1 is the same as the arrangement of the LEDs 53 forming the second LED array A2-2. Therefore, the center C41 between the first three primary color light separators 52L-1 and the second three primary color light separators 52L-2 has an apparent light reflected by the first three primary color light separators 52L-1.
- the imaginary light source of the LED 53 which is the emission source and the apparent emission source of the light reflected by the second three primary color light separation plate 52L-2, An image 53 'is formed.
- the virtual image 53 of the LED 53 constituting the LED array A2 including the green LED 53G, the blue LED 53B, and the red LED 53R is provided in the region sandwiched between the two three primary color light separation plates 52L. 'Occurs.
- the virtual image 53 of each LED 53 constituting the LED array A2 is generated between the LED array A2 and the LED array A2 disposed on the substrate 141.
- the number of LEDs 53 can be apparently increased.
- a virtual image 53R ' is generated as if a plurality of LED arrays A2 arranged in a row were apparently arranged while repeating the arrangement of the green LED 53G, the red LED 53R, the blue LED 53B, and the green LED 53G. Therefore, the backlight device 20 including the light source unit 150 efficiently mixes the red light and the blue light, and the green light twice as much as the red light and the blue light, and clearly displays the image displayed on the liquid crystal panel 10. It is possible to generate white light that can be projected.
- the information transmission cable laying device according to the present invention can be widely used when laying various information transmission cables on a wall surface in a room.
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
- Planar Illumination Modules (AREA)
- Led Device Packages (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05739205A EP1748250A4 (en) | 2004-05-19 | 2005-05-13 | ILLUMINATOR AND LIQUID CRYSTAL DISPLAY WITH AN ILLUMINATOR |
KR1020067024088A KR101161460B1 (ko) | 2004-05-19 | 2005-05-13 | 조명 장치 및 조명 장치를 이용한 액정 표시 장치 |
US11/569,147 US7690805B2 (en) | 2004-05-19 | 2005-05-13 | Lighting device, and liquid crystal display device using same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004-149680 | 2004-05-19 | ||
JP2004149680A JP4063249B2 (ja) | 2004-05-19 | 2004-05-19 | 照明装置及び液晶表示装置 |
Publications (1)
Publication Number | Publication Date |
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WO2005111496A1 true WO2005111496A1 (ja) | 2005-11-24 |
Family
ID=35394246
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/008806 WO2005111496A1 (ja) | 2004-05-19 | 2005-05-13 | 照明装置及び照明装置を用いた液晶表示装置 |
Country Status (7)
Country | Link |
---|---|
US (1) | US7690805B2 (ja) |
EP (1) | EP1748250A4 (ja) |
JP (1) | JP4063249B2 (ja) |
KR (1) | KR101161460B1 (ja) |
CN (1) | CN100554762C (ja) |
TW (1) | TW200624946A (ja) |
WO (1) | WO2005111496A1 (ja) |
Cited By (2)
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US20080285280A1 (en) * | 2005-12-07 | 2008-11-20 | Koninklijke Philips Electronics, N.V. | Lighting Module |
US8177379B2 (en) * | 2007-11-09 | 2012-05-15 | Au Optronics Corporation | LCD device, backlight module thereof with partition wall and method for manufacturing the same |
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US7731377B2 (en) | 2006-03-21 | 2010-06-08 | Semiconductor Energy Laboratory Co., Ltd. | Backlight device and display device |
WO2007114158A1 (ja) * | 2006-03-31 | 2007-10-11 | Zeon Corporation | 直下型バックライト装置 |
JP4702167B2 (ja) * | 2006-05-09 | 2011-06-15 | 豊田合成株式会社 | 液晶ディスプレイ装置 |
US7671832B2 (en) * | 2006-07-10 | 2010-03-02 | Philips Lumileds Lighting Company, Llc | Multi-colored LED backlight with color-compensated clusters near edge |
JP5050498B2 (ja) | 2006-11-21 | 2012-10-17 | ソニー株式会社 | 光源装置、バックライト装置、液晶表示装置及びバックライト装置の製造方法 |
WO2008136359A1 (ja) * | 2007-04-26 | 2008-11-13 | Sharp Kabushiki Kaisha | 発光素子および液晶表示装置 |
US8355097B2 (en) * | 2007-06-05 | 2013-01-15 | Samsung Electronics Co., Ltd. | Liquid crystal display and control method thereof |
US8916890B2 (en) * | 2008-03-19 | 2014-12-23 | Cree, Inc. | Light emitting diodes with light filters |
WO2009118941A1 (ja) * | 2008-03-28 | 2009-10-01 | シャープ株式会社 | バックライトユニットおよび液晶表示装置 |
EP2288847B1 (en) * | 2008-06-10 | 2018-11-14 | Philips Lighting Holding B.V. | Light output device and method |
US20110090424A1 (en) * | 2008-07-11 | 2011-04-21 | Sharp Kabushiki Kaisha | Illumination device and liquid crystal display device |
US20110116008A1 (en) * | 2008-07-11 | 2011-05-19 | Sharp Kabushiki Kaisha | Illumination device and liquid crystal display device |
KR101796718B1 (ko) * | 2009-06-03 | 2017-11-10 | 매뉴팩처링 리소시스 인터내셔널 인코포레이티드 | Led 백라이트의 다이나믹 디밍 |
TWI379125B (en) * | 2009-08-19 | 2012-12-11 | Amtran Technology Co Ltd | Backlight module and display device |
US20120175650A1 (en) * | 2009-10-09 | 2012-07-12 | Sharp Kabushiki Kaisha | Illuminating device and display device |
JP5283005B2 (ja) * | 2010-06-15 | 2013-09-04 | シーシーエス株式会社 | 照明装置 |
US9223080B2 (en) | 2012-04-24 | 2015-12-29 | Qualcomm Mems Technologies, Inc. | Light guide with narrow angle light output and methods |
US8979347B2 (en) | 2012-04-24 | 2015-03-17 | Qualcomm Mems Technologies, Inc. | Illumination systems and methods |
JP2014036107A (ja) * | 2012-08-08 | 2014-02-24 | Toshiba Lighting & Technology Corp | 発光モジュール及び照明装置 |
WO2014158642A1 (en) | 2013-03-14 | 2014-10-02 | Manufacturing Resources International, Inc. | Rigid lcd assembly |
US9690137B2 (en) | 2013-07-03 | 2017-06-27 | Manufacturing Resources International, Inc. | Airguide backlight assembly |
US10191212B2 (en) | 2013-12-02 | 2019-01-29 | Manufacturing Resources International, Inc. | Expandable light guide for backlight |
US10527276B2 (en) | 2014-04-17 | 2020-01-07 | Manufacturing Resources International, Inc. | Rod as a lens element for light emitting diodes |
US10649273B2 (en) | 2014-10-08 | 2020-05-12 | Manufacturing Resources International, Inc. | LED assembly for transparent liquid crystal display and static graphic |
US10261362B2 (en) | 2015-09-01 | 2019-04-16 | Manufacturing Resources International, Inc. | Optical sheet tensioner |
JP2017135219A (ja) * | 2016-01-26 | 2017-08-03 | パナソニックIpマネジメント株式会社 | 光源、照明器具及び光源の製造方法 |
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- 2005-05-13 CN CNB2005800202375A patent/CN100554762C/zh not_active Expired - Fee Related
- 2005-05-13 US US11/569,147 patent/US7690805B2/en not_active Expired - Fee Related
- 2005-05-13 WO PCT/JP2005/008806 patent/WO2005111496A1/ja active Application Filing
- 2005-05-13 KR KR1020067024088A patent/KR101161460B1/ko not_active IP Right Cessation
- 2005-05-13 EP EP05739205A patent/EP1748250A4/en not_active Withdrawn
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JPS6310103A (ja) * | 1986-06-30 | 1988-01-16 | Nissha Printing Co Ltd | 照明用板 |
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Cited By (4)
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US20080285280A1 (en) * | 2005-12-07 | 2008-11-20 | Koninklijke Philips Electronics, N.V. | Lighting Module |
US8328391B2 (en) * | 2005-12-07 | 2012-12-11 | Koninklijke Philips Electronics N.V. | Lighting module |
TWI403668B (zh) * | 2005-12-07 | 2013-08-01 | Koninkl Philips Electronics Nv | 一種發光模組 |
US8177379B2 (en) * | 2007-11-09 | 2012-05-15 | Au Optronics Corporation | LCD device, backlight module thereof with partition wall and method for manufacturing the same |
Also Published As
Publication number | Publication date |
---|---|
TW200624946A (en) | 2006-07-16 |
US20080170178A1 (en) | 2008-07-17 |
US7690805B2 (en) | 2010-04-06 |
EP1748250A1 (en) | 2007-01-31 |
KR101161460B1 (ko) | 2012-07-02 |
KR20070009711A (ko) | 2007-01-18 |
TWI325079B (ja) | 2010-05-21 |
EP1748250A4 (en) | 2009-08-05 |
CN100554762C (zh) | 2009-10-28 |
JP2005332680A (ja) | 2005-12-02 |
JP4063249B2 (ja) | 2008-03-19 |
CN1969145A (zh) | 2007-05-23 |
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