WO2006132513A1 - Dispositif d'affichage d'image et son appareil d'entrainement - Google Patents

Dispositif d'affichage d'image et son appareil d'entrainement Download PDF

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Publication number
WO2006132513A1
WO2006132513A1 PCT/KR2006/002216 KR2006002216W WO2006132513A1 WO 2006132513 A1 WO2006132513 A1 WO 2006132513A1 KR 2006002216 W KR2006002216 W KR 2006002216W WO 2006132513 A1 WO2006132513 A1 WO 2006132513A1
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WO
WIPO (PCT)
Prior art keywords
light source
source array
image
array module
display device
Prior art date
Application number
PCT/KR2006/002216
Other languages
English (en)
Inventor
Tae-Sun Song
Original Assignee
Tae-Sun Song
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tae-Sun Song filed Critical Tae-Sun Song
Publication of WO2006132513A1 publication Critical patent/WO2006132513A1/fr

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Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/72—Modifying the appearance of television pictures by optical filters or diffusing screens
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0264—Details of driving circuits
    • G09G2310/0283—Arrangement of drivers for different directions of scanning

Definitions

  • the present invention relates to an image display device and a driving apparatus thereof. More particularly, the present invention relates to an image display device using a light source array module, and a driving apparatus thereof. (b) Description of the Related Art
  • the large size image display device is broadly classified as a direct view image display device that is represented by a CRT (cathode-ray tube), a projection image display device that is represented by an LCD (liquid crystal display) projector, and an optical scanning image display device.
  • CTR cathode-ray tube
  • LCD liquid crystal display
  • Such image display devices display an image in a unit of a pixel or a pixel row so as to display an image of one frame.
  • Methods of scanning a scanning line of a unit of a pixel row are classified as an interlace scan method and a progressive scan method, and an image display device may select one of the interlace scan method and the progressive scan method according to its characteristics and performance.
  • the interlace scan method does not form a complete image scene with a single scan, but rather forms a complete image scene by first scanning odd- numbered scanning lines and then scanning even-numbered scanning lines. This method is generally used in televisions.
  • the progressive scan method sequentially scans scanning lines without skipping, and is generally used in computer monitors.
  • one image scene is performed by one scan, so that a phenomenon in which an image trembles or an image is out of focus does not occur.
  • the present invention has been made in an effort to provide an image display device and a driving apparatus thereof having advantages of realizing various scanning methods.
  • An exemplary embodiment of the present invention provides an image display device including at least one light source array module for scanning light, a moving body for circulating or reciprocally moving the light source array module, a frame memory for storing image data, a light source driver for supplying data voltage based on the image data to the light source array module, and a signal controller for generating a synchronization signal for controlling the image data and a display of the image data on the basis of an input image signal and supplying the synchronization signal to the light source driver.
  • the image display device may further include a position detector for detecting a position of the light source array module and supplying a corresponding signal to the signal controller.
  • the image display device may further include a screen on which light is scanned.
  • the frame memory may have at least one of a FIFO characteristic and a LIFO characteristic.
  • the frame memory receives image data for respective pixels of an image scene, and sends out the image data.
  • a moving direction of the light source array module may be perpendicular to a longitudinal direction of the light source array module.
  • the light source array module may reciprocally move or circulate with the moving body.
  • the at least one light source array module may include a first light source array module and a second light source array module, and moving directions of the first and second light source array modules may be opposite to each other.
  • the at least one light source array module may include a first light source array module and a second light source array module, and the first and second light source array modules may respectively scan a first image and a second image on a first image scene and a second image scene.
  • the first light source array module may scan from an upper end to a lower end of the first image scene, and then may scan from the lower end to the upper end of the second image scene. If the first light source array module scans from an upper end to a lower end of the first image scene, the second light source array module may scan from a lower end to an upper end of the second image scene. If the first light source array module scans from a lower end to an upper end of the second image scene, the second light source array module may scan from an upper end to a lower end of the first image scene.
  • the light source array module may scan an image from an upper end to a lower end of an image scene and then may scan an image from the lower end to the upper end of the image scene.
  • the light source array module may scan from a right end to a left end of the first image scene and then may scan from a right end to a left end of the second image scene, or may scan from the left end to the right end of the first image scene and then may scan from the left end to the right end of the second image scene.
  • the light source array module may scan from a right end to a left end of the screen and then may scan from the left end to the right end of the screen.
  • the at least one light source array module may include a first light source array module and a second light source array module, and the first and second light source array modules may respectively scan a first image and a second image on a first image scene and a second image scene.
  • the first and second light source array modules may alternately scan a first image on the first image scene and may alternately scan a second image on the second image scene.
  • the at least one light source array module may include a first light source array module and a second light source array module, and the first and second light source array modules may scan images on one image scene substantially at the same time.
  • the light source array module may sequentially scan images on a plurality of image scenes.
  • the light source array module may include at least three light emitting elements that are disposed with a constant interval therebetween and emit light of different colors.
  • the at least three light emitting elements may display an image for one pixel by emitting light at different times.
  • the light source array module may include at least two light emitting elements that are disposed with a constant interval therebetween and emit light of the same color.
  • the at least two light emitting elements may display an image for one pixel by emitting light at different tines.
  • the light source array module may display an image with a moving surface of the light source array module as an image scene.
  • a driving apparatus of an image display device including at least one light source array module for emitting light and a rotating body for circulating or reciprocally moving the light source array module such that the light source array module scans an image on a cylindrically shaped surface
  • a frame memory for storing image data
  • a light source driver for supplying data voltage based on the image data to the light source array module
  • a signal controller for generating a synchronization signal for controlling the image data and a display of the image data on the basis of an input image signal and supplying the synchronization signal to the light source driver.
  • FIG. 1 is a block diagram of an image display device according to an embodiment of the present invention.
  • FIG. 2 is a block diagram of a light source driver shown in FIG. 1.
  • FIG. 3 shows an example of a light source array module shown in FIG. 1.
  • FIG. 4 shows another example of a light source array module shown in FIG. 1.
  • FIG. 5 shows an example of a circuit for driving a light emitting element of a light source array module shown in FIG. 1.
  • FIG. 6 shows another example of a circuit for driving a light emitting element of a light source array module shown in FIG. 1.
  • FIG. 7 shows yet another example of a circuit for driving a light emitting element of a light source array module shown in FIG. 1.
  • FIG. 8A and FIG. 8B show other examples of a circuit for driving a light emitting element of a light source array module shown in FIG. 4.
  • FIG. 9 is a schematic view showing structural characteristics of an image display device according to an embodiment of the present invention.
  • FIG. 10 is a side elevational view of the image display device shown in FIG. 9.
  • FIG. 11 is a schematic view showing an example of a scanning method of an image display device according to an embodiment of the present invention.
  • FIG. 12 is a schematic view showing an example of a frame memory of an image display device according to an embodiment of the present invention.
  • FIG. 13 is a schematic view showing another example of a scanning method of an image display device according to an embodiment of the present invention.
  • FIG. 14 is a schematic view showing another example of a frame memory of an image display device according to an embodiment of the present invention.
  • FIG. 15 is a schematic view showing structural characteristics of an image display device according to another embodiment of the present invention.
  • FIG. 16 is a top plan view of an image display device shown in FIG. 15.
  • FIG. 17 is a schematic view showing an example of a scanning method of an image display device according to another embodiment of the present invention.
  • FIG. 18 is a schematic view showing an example of a frame memory of an image display device according to another embodiment of the present invention.
  • FIG. 19 is a schematic view showing another example of a scanning method of an image display device according to another embodiment of the present invention.
  • FIG. 1 is a block diagram of an image display device according to an embodiment of the present invention
  • FIG. 2 is a block diagram of a light source driver shown in FIG. 1
  • FIG. 3 and FIG. 4 show examples of a light source array module shown in FIG. 1
  • FIG. 5 to FIG. 8B show examples of a circuit for driving a light emitting element of a light source array module shown in FIG. 1.
  • an image display device includes at least one light source array module 600 for scanning light, at least one motor 750 that is mechanically connected to the light source array module 600, a motor driver 700 that is connected to the motor 750, a light source driver 400 and a position detector 800 that are connected to the light source array module 600, a signal controller 200 that is connected to the light source driver 400 and the motor driver 700, and an input member 100, an output member 500, and a frame memory 300 that are connected to the signal controller 200.
  • the number of light source drivers 400 may be equal to the number of light source array modules 600.
  • the image display device may include a screen 900 on which a separate image scene is scanned depending on a structure of the light source array module.
  • the input member 100 receives an input signal Vin from an external device (not shown).
  • the input member 100 converts the input signal Vin to a signal that can be used in the signal controller 200, etc., and transmits the converted signal to the signal controller 200.
  • the input signal Vin includes R, G, and B image signals, and input control signals for controlling a display of the R, G, and B image signals such as a vertical synchronization signal, a horizontal synchronization signal, a clock signal, a data enable signal, and so on.
  • the R, G, and B image signals may be analog signals or digital signals.
  • the frame memory 300 receives the image signal input from the input member 100 and stores the same, and sends out the stored image signal according to a request of the signal controller 200.
  • the frame memory 300 may store the image signal for at least one frame, and may have a characteristic of FIFO (first-in- first-out) or LIFO (last-in-first-out).
  • the light source driver 400 includes a shift register 410, a latch 420, a digital-to-analog converter 430, and an output buffer 440, which are sequentially connected.
  • the light source driver 400 receives an image data DAT for one row of pixels or one column of pixels from the signal controller 200 and converts the image data DAT to a corresponding data voltage Vdat, and then applies the converted data voltage Vdat to the light source array module 600.
  • the shift register 410 receives the image data DAT from the signal controller 200, and transmits the image data DAT by sequentially shifting the same to the latch 420 such that the input image data DAT is output at a predetermined position on an image scene.
  • the latch 420 temporarily stores the sequentially input image data DAT, and immediately sends out the input image data DAT to the digital-to-analog converter 430 according to a load signal LOAD.
  • the load signal LOAD is a control signal for instructing the signal controller 200 to apply the corresponding data voltage Vdat to the light source array module 600.
  • the digital- to-analog converter 430 converts the image data DAT from the latch 420 to the analog data voltage Vdat, and transmits the converted data voltage to the output buffer 440.
  • the output buffer 440 transmits the data voltage Vdat to the light source array module 600, and maintains it for a predetermined time.
  • the light source driver 400 may directly convert the image data DAT for respective pixels that are sequentially input to the analog data voltage Vdat, and sequentially transmits the converted analog data voltage to the light source array module 600.
  • the light source driver 400 may drive the light source array module 600 by a pulse width according to an applying period of the same voltage, or by various other methods.
  • the light source array module 600 includes a plurality of light emitting elements R, G, and B.
  • the light source array module 600 receives the data voltage Vdat from the light source driver 400 and emits light corresponding to the data voltage Vdat, thereby displaying a desired image.
  • the light emitting elements R, G, and B may be formed as light emitting diodes LED or laser diodes, but they can be formed by other elements.
  • the light emitting elements R, G, and B emit light according to a magnitude of a voltage or a current applied thereto.
  • the light emitting elements emits light of primary colors of red R, green G, and blue B, it is not limited thereto, and the light emitting elements may emit lights of primary colors of cyan, magenta, yellow, etc.
  • the light source array module 600 extends long in a specific direction
  • the light source array module 600 is mechanically connected to the motor 750 so as to be able to move in a direction perpendicular to the longitudinal direction.
  • the light source array module 600 may have positions of the light emitting elements R, G, and B variously arranged so as to display images.
  • a light source array module 601 may arrange three light emitting elements R, G, and B in a region corresponding to one pixel. In this case, the three light emitting elements R, G, and B emit light at the same time, thereby displaying a complete image for one pixel. At this time, the light source driver 400 drives R, G, and B data voltages Vdat at once.
  • a light source array module 602 disposes the light emitting elements R 1 G, and B with a predetermined spatial interval therebetween.
  • three light emitting elements R, G, and B emit light with a predetermined time interval therebetween, thereby displaying a complete image for one pixel. That is, the light source array module 602 spatially moves, and scans the corresponding light when respective light emitting elements R, G, and B are positioned in a region corresponding to one pixel, i.e., in the same spatial position. Accordingly, primary colors of R, G, and B are sequentially displayed in a region corresponding to one pixel, so a desired color is displayed as a result of the sum of these colors.
  • the light source driver 400 may send out the corresponding data voltage Vdat in accordance with timing when the light emitting elements R, G, and B emit light.
  • the light source driver 400 may send out the R, G, and B data voltages Vdat at one time, and timing of emitting light of the respective light emitting elements R, G, and B can be regulated by a time delayer (referring to FIG. 7).
  • the light source array module 600 includes various types of driving circuits for driving a light emitting diode LED.
  • a light source array module 603 includes a plurality of light emitting members that include a light emitting diode LED, a driving transistor Q, and resistors Rb and Re.
  • a driving voltage Vc is connected to a collector of the driving transistor Q, and the resistors Rb and Re are respectively applied to a base and an emitter.
  • the light emitting diode LED is connected between the resistor Re and a ground, and the data voltage Vdat is connected to the resistor Rb.
  • One light emitting member emits light of one color of primary colors.
  • Examples of the primary colors include three primary colors of red, green, and blue.
  • the driving transistor Q outputs an output current a magnitude of which is controlled according to the data voltage Vdat input through the resistor Rb to the light emitting diode LED, and the light emitting diode LED emits light of different intensities depending on a magnitude of the output current, so light of the corresponding image is emitted so as to be scanned or is emitted and then is projected to the screen so as to be scanned.
  • a light source array module 604 includes a plurality of light emitting members that include a light emitting diode LED, first and second driving transistors Qa and Qb, and resistors Rb1 , Rb2, Re, and Rbe.
  • the driving voltage Vc is connected to a collector of the first driving transistor Qa, and the resistor Rb is connected to a base of the first driving transistor Qa.
  • the light emitting diode LED and the resistor Re are connected in series between the first and second driving transistors Qa and Qb.
  • the resistor Rb2 is connected to a base of the second driving transistor Qb, a collector of the second driving transistor Qb is grounded, and the resistor Rbe is connected between a base of the second driving transistor Qb and a ground.
  • the data voltages Vdati and Vdat2 are respectively connected to the resistors Rb1 and Rb2.
  • a light source array module 606 includes a plurality of light emitting members that include a light emitting diode LED, a driving transistor Q, resistors Rb and Re, and a time delayer 607. Connections of the light emitting member are substantially equal to those of the light emitting member shown in FIG. 5, except that the time delayer 607 is connected between the data voltage Vdat and the resistor Rb. The time delayer 607 delays the input data voltage Vdat by a predetermined time and then inputs the same to the driving transistor Q.
  • the light emitting diode LED emits light late by the delayed time
  • such light emitting member can be used to regulate a light emitting time in the light source array module 602 in which the light emitting elements R, G, and B are arranged with a predetermined interval as shown in FIG. 4.
  • a light source array module 605 includes a plurality of light emitting members that include n light emitting diodes LED1 , LED2 LEDn, n driving transistors Q1 , Q2 Qn, n resistors Rb1 ,
  • the i-th light emitting member includes the i-th driving transistor Qi, the i-th resistor Rbi, and the i-th light emitting diode LEDi.
  • the driving voltage Vc is connected to a collector of the driving transistor Qi, and the resistor Rbi and the light emitting diode LEDi are respectively connected to a base and an emitter of the driving transistor Qi.
  • the light emitting diode LEDi is grounded through the resistor Re.
  • the data voltage Vdat is applied to the first driving transistor Q1 through the resistor Rb1 , the data voltage Vdat is applied to the second driving transistor Q2 through the time delayer 608 and the resistor Rb2, and the data voltage Vdat is applied to the third driving transistor (not shown) through the time delayers 608 and 609 and the resistor (not shown). Accordingly, if the data voltage Vdat is applied, the first light emitting diode LED1 emits light without delay, the second light emitting diode LED2 emits light at a moment that is delayed by the predetermined time by the time delayer 608, and the following light emitting diodes emit light at moments that are sequentially delayed by the predetermined time.
  • the light source array module 606 of this example is shown in Fig. 4, in which respective color light emitting elements R, G, and B the light source array modules 601 of FIG. 3 are arranged in n rows. Since such light source array module 606 is provided with n rows of identical light emitting elements, the same light can be scanned n times for pixels of one row or one column, so that brightness of an image display device can be enhanced.
  • the signal Vdati for the light emitting diode LED1 is applied to the resistor Rb1 so as to operate the driving transistor Q1 so that the light emitting diode LED1 emits light
  • the signal Vdat2 which is applied together with the signal Vdati for the light emitting diode LED2 is applied to the resistor Rb2 after passing the time delayer 608 so as to operate the driving transistor Q2 such that the light emitting diode LED2 emits light.
  • the signal Vdat3 that is applied together with the signals for the light emitting diodes LED1 and LED2 is further delayed by the time delayer 609 and then is applied to the resistor Rbn so as to operate the driving transistor Qn such that the light emitting diode LEDn emits light.
  • the light emitting diodes sequentially operate with a time interval therebetween, so that they can be combined as necessary such that the light source array module emits light with a suitable brightness and color at the same space after being moved by a moving member, or it scans light to various spaces.
  • the time delayer is provided for delaying the overall driving timing, a position thereof can be varied before it is input to the driving element, i.e., a driving transistor.
  • the motor 750 is mechanically connected to a moving member (not shown) that is attached to the light source array module 600, and causes the moving member to move along the screen 900 in a direction perpendicular to the longitudinal direction of the light source array module 600.
  • the motor 750 may be a linear motor. In this case, the light source array module 600 reciprocally moves between both ends of the screen 900 or in a specific region. Unlike this, the motor 750 may be a rotating motor, thereby making the light source array module 600 undergo a reciprocal movement or a circular movement between both ends of the screen 900. By alternately changing a rotation direction of the motor 750 or by connecting a device (not shown) for converting a rotating movement to a reciprocal movement to the motor 750, a reciprocal movement of the light source array module 600 can be achieved.
  • the motor 750 is an example, and the motor 750 can be substituted by any power device for making the light source array module 600 move along the screen 900.
  • the motor driver 700 drives the motor 750 according to a control signal from the signal controller 200, and causes the light source array module 600 to move along the screen at a constant speed.
  • the position detector 800 is connected to a fixing member (not shown) such as a moving member and a supporting member that are attached to the light source array module 600, and detects a position of the light source array module 600 while the light source array module 600 moves with the fixing member and sends a corresponding signal to the signal controller 200. Accordingly, the signal controller 200 sends out an image signal and a control signal that are matched with a position of the light source array module 600, so a desired image can be precisely displayed on the screen 900.
  • the position detector 800 may be realized by a plurality of photocouplers or a plurality of contact sensors, and is generally used together with a sealer and so on.
  • the number of light sources in the longitudinal direction of the light source array module 601 determines a horizontal resolution of the screen, and the number of scans of the light source array module 601 determines a vertical resolution.
  • the number of light sources in the longitudinal direction of the light source array module 601 determines a vertical resolution of the screen, and the number of scans of the light source array module 601 determines a horizontal resolution.
  • the number of scans is suitably regulated depending on a scanning distance and the number of light sources of the light source array module.
  • N_Array is the number of light source array modules.
  • the output member 500 generates an output signal and outputs the same to the outside.
  • the output signal includes an output image signal and an output control signal for controlling display thereof.
  • An external device (not shown) can receive the output signal from the output member 500 and can display an image.
  • the output member 500 may send out the input signal Vin in its original condition or may amplify the input signal and send out the amplified signal.
  • the output member 500 may modulate an internal image signal of the image display device and may generate a horizontal synchronization signal, a vertical synchronization signal, and so on according to the modulated image signal, and then output the generated signal to the outside. If necessary, the output member 500 may be omitted.
  • the signal controller 200 controls operations of the input member 100, the frame memory 300, the light source driver 400, the output member 500, the motor driver 700, and so on. i Operations of the image display device will now be explained in detail.
  • the signal controller 200 receives image signals from the input member 100 and suitably processes the received image signals in accordance with operating conditions such as a scanning method of the image display device, and sends out the processed image data DAT to the light source driver 400.
  • the signal controller 200 generates a scanning start signal that instructs to start scanning for synchronization, and a horizontal synchronization start signal that informs of a transmission start of the image data DAT for pixels of one row or one column, and sends out the generated control signal to the light source driver 400, the motor driver 700, and so on.
  • the light source driver 400 receives the image data DAT for pixels of one row or one column from the signal controller 200, and converts this to the corresponding data voltage Vdat. Then, the light source driver 400 applies the converted data voltage Vdat to the light source array module 600.
  • the light source array module 600 emits light of different intensities depending on a magnitude of the data voltage Vdat so as to scan the corresponding light, or scans light by injecting light to the pixels of the corresponding row or the corresponding column.
  • a surface or a space formed by the movement of the light source array module without the screen 900 may be considered as the screen 900, and the surface or the space can be an image scene.
  • the motor driver 700 drives the motor 750 according to a control signal from the signal controller 200 such that the light source array module 600 moves to a position corresponding to pixels of the next row or the next column. If a longitudinal direction of the light source array module 600 is a row direction, the light source array module 600 moves in a column direction, and on the other hand, if a longitudinal direction of the light source array module 600 is a column direction, the light source array module 600 moves in a row direction.
  • the position detector 800 sends feedback of position information of the light source array module 600 to the signal controller 200, and if it is determined that the light source array module 600 is located at a position corresponding to pixels of the next row or the next column, the signal controller 200 applies the load signal LOAD to the light driver 400 such that the data voltage Vdat for pixels of the next row or the next column is applied to the light source array module 600.
  • the corresponding image is displayed in the pixels of the next row or the next column of an image scene or the screen 900.
  • an image is displayed in all pixels of the image scene or the screen 900 for one frame.
  • FIG. 9 is a schematic view showing structural characteristics of an image display device according to an embodiment of the present invention
  • FIG. 10 is a side elevational view of the image display device shown in FIG. 9,
  • FIG. 11 and FIG. 13 are schematic views showing an example of a scanning method of an image display device according to an embodiment of the present invention
  • FIG. 12 and FIG. 14 are schematic views showing an example of a frame memory of an image display device according to an embodiment of the present invention.
  • an image display device includes a pair of first pulleys 910 and 915 and a pair of second pulleys 920 and 925 connected to a motor (not shown), a first rotating axis 917 and a second rotating axis 927 respectively associated with the first pulleys 910 and 915 and the second pulleys 920 and 925, a first belt 615 connected to the pulleys 910 and 920, a second belt 625 connected to the pulleys 915 and 825, a fist light source array module 610 and a second light source array module 620 connected to the belts 615 and 625, and a first screen S1 and a second screen S2 receiving light from the first and second light source array modules 610 and 620 so as to display images.
  • the first and second pulleys 910, 915, 920, and 925 can be substituted by drums, and the first and second belts 615 and 625 can be substituted by chains.
  • two light source array modules 610 and 620 are disposed in FIG. 9 and FIG. 10, four light source array modules can be disposed. At this time, if the number of light source array modules is m and a length of a pixel region of the screens S1 and S2 is s, respective light source array modules may be preferably disposed on the belts 615 and 625 with an interval of s/m.
  • the first and second light source array modules 610 and 620 are vertically attached to the first and second belts 615 and 625 such that longitudinal directions thereof are parallel with the first and second rotating axes 917 and 927. Accordingly, the longitudinal direction of the first and second light source array modules 619 and 620 is a horizontal direction, and the belts 615 and 625 move in a vertical direction.
  • the first and second light source array modules 610 and 620 are initially respectively disposed at positions corresponding to an upper end of the screen S1 and a lower end of the screen S2.
  • the first and second belts 615 and 625 rotate together with the operation of the motor, and the first and second light source array modules 610 and 620 respectively move in a downward direction and in an upward direction with the first and second belts 615 and 625.
  • the first light source array module 610 sequentially scans from an upper end to a lower end of the screen S1 so as to display an image of a first frame of first image data
  • the second light source array module 620 sequentially scans from a lower end to an upper end of the screen S2 so as to display an image a first frame of second image data.
  • the image of the first frame of the first image data and the image of the first frame of the second image data can be the same or different.
  • the first and second light source array modules 610 and 620 are positioned at a lower end of the screen S2 and an upper end of the screen S1 , respectively.
  • the first light source array module 610 sequentially scans from a lower end to an upper end of the screen S2 so as to display an image of a second frame of the second image data
  • the second light source array module 620 sequentially scans from an upper end to a lower end of the screen S1 so as to display an image of a second frame of the first image data.
  • images corresponding to the first and second image data are respectively displayed on the screens S1 and S2. Scanning is performed from an upper end to a lower end in the screen S1 , and scanning is performed from a lower and to an upper end in the screen S2.
  • the frame memory 300 of the image display device includes a first frame memory FM1 and a second frame memory FM2.
  • the first frame memory FM1 has a FIFO characteristic
  • the second frame memory FM2 has a LIFO characteristic.
  • the first frame memory FM1 sequentially stores the first image data for a first pixel row to the last pixel row, and sequentially sends out the first image data for the first pixel row to the last pixel row.
  • the second frame memory FM2 sequentially stores the second image data for the first pixel row to the last pixel row, and sequentially sends out the second image data for the last pixel row to the first pixel row.
  • the data voltage based on the image data sent out from the first and second frame memories FM1 and FM2 is alternately applied to the light source array modules 610 and 620 for respective frames.
  • the motor is a linear motor, or if the motor is a rotation motor that alters a rotation direction or is provided with a device for converting a rotation motion to a reciprocal motion, the first and second light source modules 610 and 620 reciprocally move between both ends of the respective screens S1 and S2. That is, referring to FIG.
  • the first light source array module 610 sequentially scans from an upper end to a lower end of the screen S1 so as to display an image of a first frame of first image data
  • the second light source array module 620 sequentially scans from a lower end (or an upper end) to an upper end (or a lower end) of the screen S2 so as to display an image of a first frame of second image data.
  • the first light source array module 610 sequentially scans from a lower end to an upper end of the screen S1 so as to display an image of a second frame of the first image data
  • the second light source array module 620 sequentially scans from an upper end (or a lower end) to a lower end (or an upper end) of the screen S2 so as to display an image of a second frame of the second image data.
  • images corresponding to the first and second image data are respectively displayed.
  • the corresponding images are alternately scanned on the two screens S1 and S2 from an upper end to a lower end and then from a lower end to an upper end for respective frames.
  • the frame memory 300 of the image display device includes a third frame memory FM3 and a fourth frame memory FM4.
  • the third frame memory FM3 has a FIFO characteristic
  • the fourth frame memory FM4 has a LIFO characteristic.
  • the third frame memory FM3 sequentially stores the first and second image data for a first pixel row to the last pixel row, and sequentially sends out the first and second image data for the first pixel row to the last pixel row.
  • the fourth frame memory FM4 sequentially stores the second and first image data for the first pixel row to the last pixel row, and sequentially sends out the second and first image data for the last pixel row to the first pixel row.
  • the first and second image data are alternately input to the third and fourth frame memories FM3 and FM4 for respective frames, and the data voltage based on the image data sent out from the third and fourth frame memories FM3 and FM4 are alternately applied to the light source array modules 610 and 620 for respective frames.
  • the FIFO characteristic or the LIFO characteristic of the memory does not need to be determined in consideration of respective bits of the memory, and it is preferable that it is conceptually set with a reference of a block unit.
  • the image display device according to this embodiment includes two screens S1 and S2, the scope of the present invention is not limited thereto, and the image display device may include one screen or more than two screens.
  • FIG. 15 is a schematic view showing structural characteristics of an image display device according to another embodiment of the present invention
  • FIG. 16 is a top plan view of an image display device shown in FIG. 15,
  • FIG. 17 and FIG. 19 are schematic views showing an example of a scanning method of an image display device according to another embodiment of the present invention
  • FIG. 18 is a schematic view showing an example of a frame memory of an image display device according to another embodiment of the present invention.
  • the image display device includes a pair of third pulleys 930 and 935, a pair of fourth pulleys 940 and 945, a pair of fifth pulleys 950 and 955, and a pair of sixth pulleys 960 and 965 that are connected to a motor (not shown), a third rotating axis 937, a fourth rotating axis 947, a fifth rotating axis 957, and a sixth rotating axis 967 respectively associated with the third pulleys 930 and 935, the fourth pulleys 940 and 945, the fifth pulleys 950 and 955, and the sixth pulleys 960 and 965, a third belt 635 connected to the belts 930, 940, 950, and 960, a fourth belt 645 connected to the belts 935, 945, 955, and 965, a third light source array module 630, a fourth light source array module 640,
  • the third to sixth light source array modules 630, 640, 650, and 660 are vertically attached to the belts 635 and 645 such that longitudinal directions thereof are parallel with the third to sixth rotating axes 937, 947, 957, and 967. Accordingly, the longitudinal directions of the third to sixth light source array modules 630, 640, 650, and 660 are a vertical direction, and the belts 635 and 645 move in a horizontal direction.
  • this method can be used in the same manner for a light source module attached to a rotating body such that the light source module scans on a surface of a hollow cylindrical shape.
  • the number of light source array modules may be one or more than one, and the number of image scenes scanned may be one or more than one.
  • the light source array module sequentially scans an image scene while rotating, and the other light source array modules sequentially scan image scenes corresponding to their positions, so that a plurality of light source array modules scan a plurality of image scenes.
  • the third to sixth light source array modules 630, 640, 650, and 660 are respectively initially disposed at right ends of the third to sixth screens S3, S4, S5, and S6. While the motor rotates, the third and fourth belts 635 and 645 rotate, so that the third to sixth light source array modules 630, 640, 650, and 660 move to the left together with the third and fourth belts 635 and 645. Accordingly, the third to sixth light source array modules 630, 640, 650, and 660 sequentially scan from the right ends to the left ends of the third to sixth screens S3, S4, S5, and S6 so as to display images of first frame of first to fourth image data.
  • images of the first frames of the first to fourth image data may be the same or different.
  • the third to sixth light source array modules 630, 640, 650, and 660 move together with the belts 635 and 645 so as to be respectively positioned at right ends of the fourth, fifth, sixth, and third screens S4, S5, S6, and S3.
  • the third to sixth light source array modules 630, 640, 650, and 660 sequentially scan from the right end to the left end of the fourth, fifth, sixth, and third screens S4, S5, S6, and S3 so as to display images of second frames of the second, third, fourth, and first image data.
  • the third to sixth light source array modules 630, 640, 650, and 660 move together with the belts 635 and 645 so as to be respectively positioned at right ends of the fifth, sixth, third, and fourth screens S5, S6, S3, and S4.
  • the third to sixth light source array modules 630, 640, 650, and 660 again respectively sequentially scan from the right ends to the left ends of the fifth, sixth, third, and fourth screens S5, S6, S3, and S4 so as to display images of third frames of the third, the fourth, the first, and the second image data.
  • the third to sixth light source array modules 630, 640, 650, and 660 move together with the belts 635 and 645 so as to be positioned at right ends of the sixth, third, fourth, and fifth screens S6, S3, S4, and S5.
  • the third to sixth light source array modules 630, 640, 650, and 660 again respectively sequentially scan from the right ends to the left ends of the sixth, third, fourth, and fifth screens S6, S3, S4, and S5 so as to display images of fourth frames of the fourth, the first, the second, and the third image data.
  • images corresponding to the first to the fourth image data are respectively displayed on the third to sixth screens S3, S4, S5, and S6. Scanning is always performed from right ends to left ends of the third to sixth screens S3, S4, S5, and S6. In contrast, an image may be scanned from a right end to a left end of the screen.
  • the image displayed by the third to sixth light source array modules 630, 640, 650, and 660 can be described as follows.
  • A1 to A4 indicate the third to sixth light source array modules 630, 640, 650, and 660, and for example, an image of a first frame displayed on the third screen S3 is indicated by S3(1 ).
  • A1 S3(1), S4(2), S5(3), S6(4), S3(5), S4(6), S5(7), S6(8), ...
  • A2 S4(1), S5(2), S6(3), S3(4), S4(5), S5(6), S6(7), S3(8), ...
  • A3 S5(1), S6(2), S3(3), S4(4), S5(5), S6(6), S3(7), S4(8), ...
  • A4 S6(1), S3(2), S4(3), S5(4), S6(5), S3(6), S4(7), S5(8), ...
  • the light source array modules A1 , A2, A3, and A4 passing the respective screens S3, S4, S5, and S6 are as follows.
  • the frame memory 300 of an image display device includes four frame memories FM5.
  • the frame memories FM5 sequentially store image data for a first pixel row to the last pixel row, and sequentially send out image data for pixel rows from a right end pixel row to a left end pixel row.
  • a data voltage based on the image data sent out from the frame memory FM5 is applied to the light source array module. Operations of respective frame memories FM5 are equal to each other, so detailed explanations for the same will be omitted.
  • the signal controller 200 generates a separate synchronization signal that is based on the image data in a pixel row unit, and sends out the generated synchronization signal together with the image data DAT.
  • the image data of one frame may be converted in accordance with a scanning method according to an embodiment of the present invention, and the converted data may be stored in the frame memory FM5.
  • the third to sixth light source array modules 630, 640, 650, and 660 can undergo a linear movement.
  • the third to sixth light source array modules 630, 640, 650, and 660 are initially respectively positioned at right ends of the third to sixth screens S3, S4, S5, and S6. If the motor operates, the third to sixth screens S3, S4, S5, and S6 respectively sequentially scan from the right ends to the left ends of the third to sixth screens S3, S4, S5, and S6 so as to display images of first frames of the first to fourth image data. Then, the third to sixth screens S3, S4, S5, and S6 respectively sequentially scan from the left ends to the right ends of the third to sixth screens S3, S4, S5, and S6 so as to display images of second frames of the first to fourth image data.
  • images corresponding to the first to fourth image data are respectively displayed on the third to sixth screens S3, S4, S5, and
  • the image display device includes four screens
  • the image display device may include one to three screens or more than four screens.
  • An image display device can display different images on a plurality of screens with only one driving apparatus for an image display device. Furthermore, since the light source array module can scan images while moving vertically and/or horizontally, images can be displayed in various ways.
  • a region scanned by the light source array module can directly form an image scene through a window and so on without an actual screen. That is, in the case that a moving surface of the light source array module is used as an image scene, an image scene may be formed by disposing a transparent plate at a position of the screen shown in FIG. 10 to FIG. 16.
  • the element referred to as a screen hereinabove can be substituted by an image scene, and the scope of the present invention is not limited by such a term.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

L'invention concerne un dispositif d'affichage d'image comprenant au moins un module de réseau de sources lumineuses pour balayage lumineux; un corps mobile permettant de faire circuler ou de déplacer alternativement le module de réseau de sources lumineuses; une mémoire de trame permettant de stocker des données d'image; une commande de sources lumineuses permettant de fournir une tension de données, en fonction des données d'image, au module de réseau de sources lumineuses; un contrôleur de signaux permettant de générer un signal de synchronisation afin de commander les données d'image; et un affichage de données d'image basé sur un signal d'image d'entrée et fournissant le signal de synchronisation à la commande de sources lumineuses. Du fait que le module de réseau de sources lumineuses se déplace ou circule verticalement et horizontalement, l'affichage d'image peut afficher des images obtenues à l'aide de procédés de balayage variés.
PCT/KR2006/002216 2005-06-09 2006-06-09 Dispositif d'affichage d'image et son appareil d'entrainement WO2006132513A1 (fr)

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KR101306184B1 (ko) * 2007-09-04 2013-09-09 삼성전자주식회사 3차원 디스플레이 장치 및 3차원 영상 표시 방법

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JP2001004950A (ja) * 1999-06-25 2001-01-12 Matsushita Electric Ind Co Ltd 映像表示装置
US6224216B1 (en) * 2000-02-18 2001-05-01 Infocus Corporation System and method employing LED light sources for a projection display
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JPH05292274A (ja) * 1992-04-06 1993-11-05 Fuji Photo Film Co Ltd レーザ記録装置
JPH06295159A (ja) * 1993-04-09 1994-10-21 Matsushita Electric Ind Co Ltd レーザディスプレイ装置
KR20040103997A (ko) * 2003-06-02 2004-12-10 엘지.필립스 엘시디 주식회사 액정표시패널과 그 구동방법 및 장치

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US4692808A (en) * 1986-09-02 1987-09-08 Ford Aerospace & Communications Corporation Passively modulated push broom display
US6380686B1 (en) * 1998-06-03 2002-04-30 Prochips Technology Inc. Method and apparatus for displaying characters and/or images
JP2001004950A (ja) * 1999-06-25 2001-01-12 Matsushita Electric Ind Co Ltd 映像表示装置
US6224216B1 (en) * 2000-02-18 2001-05-01 Infocus Corporation System and method employing LED light sources for a projection display
US6945652B2 (en) * 2001-07-10 2005-09-20 Canon Kabushiki Kaisha Projection display device

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KR100823708B1 (ko) 2008-04-18

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