JP4507630B2 - Optical function device and optical display method - Google Patents

Description

  The present invention relates to an optical function device, and more particularly to an image projection device capable of operating the orientation of an image displayed on a liquid crystal panel.

  In a projector using three liquid crystal panels that respectively modulate RGB color lights based on data signals, a specific panel image is inverted from the other panel images by an optical system for combining the colors. For example, in the projection type color display device described in FIG. 7 of Patent Document 1 (Japanese Patent No. 2787916), each color light passing through the first and second transmissive liquid crystal panels is modulated and then color combining means. The color light reflected by the wavelength selective reflection layer of the prism is guided to the projection optical system, but the color light passing through the third transmission type liquid crystal panel is modulated and transmitted through the wavelength selective reflection layer of the prism. Guided to the system. For this reason, the projection type color display device of Patent Document 1 employs a structure in which data signals are allocated and supplied from one end side to the drive circuits of the first and second transmissive liquid crystal panels in the arrangement order of the plurality of signal lines. In addition, a structure in which a data signal is allocated and supplied from the other end to the third transmission type liquid crystal panel drive circuit in the arrangement order of the plurality of signal lines is employed.

  In the projection type color display device disclosed in Patent Document 1, it is necessary to produce two types of liquid crystal panels corresponding to data signals having different arrangement orders.

  In order to avoid this, there is a method in which one type of liquid crystal panel provided with a circuit capable of scanning in both directions is also used.

  A configuration of a liquid crystal display panel including a circuit capable of scanning from both directions will be described. FIG. 13 is a block diagram of the liquid crystal display panel. The liquid crystal display panel 600 is provided with a data line driver circuit 601 including a shift register 6011 and an analog switch 6012, a gate line driver circuit 602 including a shift register 6021 and a buffer 6022, and a display region 603. In the display region 603, a plurality of data lines 6031 connected to the data line driver circuit 601, a plurality of gate lines 6032 connected to the gate line driver circuit 602, the data lines 6031, and the gate lines 6032 are formed. A plurality of pixels 6033 are included. Note that the pixel 6033 includes a thin film transistor TFT 6034 and a liquid crystal cell 6035, and the liquid crystal cell 6035 is formed of a pixel electrode, a common electrode 6036, and a liquid crystal. The data line driver circuit 601 is provided with a shift register 6011 constituted by TFTs and an analog switch 6012. A data line 6031 is a data signal input to the data signal input bus 6013 based on a clock signal and a start signal input from the outside. Are sequentially output according to the scanning direction. The gate line driver circuit 602 is provided with a shift register 6021 constituted by TFTs and a buffer 6022, and sequentially outputs gate pulses to the gate line 6032 in accordance with the scanning direction based on a clock signal and a start signal input from the outside.

  In these shift registers 6011 and 6021, an example of a circuit that scans only from a single direction on a liquid crystal panel is shown in FIG. 14, and a circuit that can scan in both directions, for example, Japanese Patent Laid-Open No. 2002-352593 is disclosed. An example is shown in FIG. The unidirectional scanning circuit of FIG. 14 shows the case of a two-stage transfer unit circuit, and the transfer unit circuit is configured by transfer gates 1401 and 1402 and two inverters 1403. The start pulse SP is sequentially transferred when the clock signal φ and its inverted signal φinv are input to the transfer gates 1401 and 1402, and the sampling pulse for turning on the analog switch 6012 and the pulse signal serving as the gate pulse are sequentially activated, and the terminal S1. , S2. In the bidirectional scanning circuit of FIG. 15, a transfer unit circuit is configured by four clocked inverters 1504, 1505, 1506, and 1507, and a logical product of the input end and output end of these transfer unit circuits is obtained by a NAND circuit 1508 and an inverter 1509. Output. The clocked inverters 1506 and 1507 are configured as shown in FIG. The transfer direction control signal R is set to the H or L level to control the transfer direction of the start pulse SP. Further, the transfer direction control signal R is input to the transfer gates 1501 and 1502 and the inverter 1503 to thereby generate the start pulse SP at the first stage. It is configured to select whether to supply to the transfer unit circuit or the final transfer unit circuit. When the clock signal φ and its inverted signal φinv are input to the clocked inverters 1504 and 1505, the start pulse SP is sequentially transferred by a half cycle of the clock frequency, and a sampling pulse and a gate pulse for turning on the analog switch 6012 Are output to terminals S1, S2,... Sm. The transfer direction is controlled by a transfer direction control signal R and its inverted signal Rinv. The clocked inverters 1504 and 1505 are configured as shown in FIG.

  A liquid crystal display device that controls the orientation of an image displayed on a liquid crystal display panel by a selection signal input to an interface circuit has also been put into practical use. For example, in the liquid crystal display device described in FIG. 1 of Patent Document 3 (Japanese Patent Laid-Open No. 10-207430), a head data driver designation signal for designating one of a plurality of data drivers at the head and each data driver A display direction switching signal for capturing display data from the forward direction or the reverse direction, a head scan driver designating signal for designating one of a plurality of scan drivers at the top, and horizontal scanning of each pixel in order. By selectively inputting either or both of the scanning direction switching signal to be performed in the direction or the reverse direction to the interface, the supply source of the display data input to each pixel is switched and displayed on the liquid crystal panel. A structure is employed in which the orientation of the image is mirror-reversed in one or both of the horizontal direction and the vertical direction.

  As another example, in the liquid crystal television monitor with a scan inversion function described in FIG. 1 of Japanese Patent Laid-Open No. 10-301540, a transfer pulse applied to the source driver of the liquid crystal panel is transmitted to the left side of the screen. The horizontal scanning inversion switch that switches whether to transfer from the right side or from the right side switches the horizontal scanning direction. Similarly, in the vertical direction, transfer pulses applied to the gate driver are transferred from the upper side of the screen or from the lower side. A method is adopted in which the vertical scanning direction is switched by a vertical scanning inversion switch for switching whether to transfer.

  On the other hand, the liquid crystal panel has luminance unevenness due to non-uniformity of the thickness of the liquid crystal layer, in-plane variation of the operating characteristics of the TFT, and the color unevenness occurs when the RGB three color lights are combined. This unevenness occurs at a unique location for each color panel. For example, in the electro-optical device, the image processing circuit, the image data correction method, and the electronic apparatus shown in FIG. 1 of Patent Document 5 (Japanese Patent Laid-Open No. 2001-343904), the unevenness is measured in advance for each color panel, and the measurement is performed. The reference correction value based on the value is stored in conjunction with the location on the panel, and when the panel is driven, the horizontal and vertical synchronization signals are counted by a counter, and the display location on the panel is converted from this counted value and stored. Based on a certain reference correction value, a method of calculating the correction value at the display location and inputting it to the panel in addition to the image data signal is employed.

  Further, in the active matrix type liquid crystal display device shown in FIG. 1 of Patent Document 6 (Japanese Patent Laid-Open No. 6-89073), holding means for holding a basic correction coefficient for each number or representative number of a scan bus line; A display voltage to be applied to the pixel electrode of the liquid crystal cell using the adjustment correction coefficient adjusted or adjusted by the adjustment unit. Alternatively, a method of correcting the common voltage applied to the common electrode of the liquid crystal cell is adopted.

Japanese Patent No. 2787916 JP 2002-352593 A Japanese Patent Laid-Open No. 10-207430 JP-A-10-301540 Japanese Patent Laid-Open No. 2001-343554 JP-A-6-89073

  However, the display devices disclosed in Patent Documents 1 to 6 have several problems.

  In the projection type color display device disclosed in Patent Document 1, since it is necessary to manufacture two types of liquid crystal panels corresponding to data signals having different arrangement orders, this causes a cost increase, but this is avoided. For this purpose, as described above, there is a method in which one type of liquid crystal panel provided with a circuit capable of scanning in both directions is also used.

  However, in a liquid crystal display panel having a circuit that allows scanning in both directions, there is a problem that the number of elements per transfer unit circuit increases. The circuit that scans only from a single direction and the circuit that can scan from both directions are compared by the number of elements per transfer unit circuit as follows. In the case of a circuit only from one direction, it can be composed of two clocked inverters and two inverters, whereas in the case of a bidirectional circuit, it is composed of four clocked inverters, one NAND gate, and one inverter. Composed. The clocked inverter is composed of 4 TFTs, the transfer gate is composed of 2 TFTs, the inverter is composed of 2 TFTs, and the NAND gate is composed of 4 TFTs. In the case of a circuit, there are 22 transistors, and the number of elements per transfer unit circuit increases by using a bidirectional circuit. For this reason, when the shift register is a bidirectional circuit, the area of the drive circuit is remarkably increased, which becomes an obstacle to downsizing and narrowing of the panel.

  Further, when the number of elements of the drive circuit increases, the yield of the panel is impaired. Therefore, the provision of the bidirectional circuit has a problem that the yield of the panel is impaired.

  On the other hand, in the liquid crystal display device disclosed in Patent Document 3, the orientation of an image displayed on the liquid crystal display panel is controlled by inputting a selection signal to the interface circuit, and a control circuit for this purpose is required. Since the panel drive circuit scale becomes large, there is a problem that it is difficult to downsize and narrow the frame of the liquid crystal panel and increase the cost.

  In addition, since the liquid crystal television monitor with a scanning inversion function disclosed in Patent Document 4 switches the display direction with a switch, if the monitor is incorporated into a product, the display direction cannot be switched depending on the installation form of the product. There is a problem that becomes.

  Further, the electro-optical device, the image processing circuit, the image data correction method, and the electronic apparatus disclosed in Patent Document 5 are provided with a bidirectional scanning circuit in the panel so that the scanning direction can be reversed. A plurality of storage means for storing the reference correction value and the count value corresponding to the location on the panel for each scanning direction, or from the counter count values of the horizontal and vertical synchronization signals for each color panel and for each scanning direction. It is necessary to perform a plurality of arithmetic processes for converting the place, and there is a problem that the circuit scale becomes large or the arithmetic processes become complicated. Further, if the circuit scale is increased, the cost increases.

  Furthermore, the active matrix type liquid crystal display device disclosed in Patent Document 6 is provided with a bidirectional scanning circuit on a liquid crystal panel and can invert the vertical scanning direction. Need to be provided with a holding means for holding a basic correction coefficient for correcting the display voltage applied to the pixel electrode of the liquid crystal cell or the common voltage applied to the common electrode of the liquid crystal cell for every vertical scanning direction, and an adjustment unit. Therefore, there is a problem that the adjustment work in the adjustment unit increases and the circuit scale of the adjustment unit increases. In addition, since the circuit scale is increased by providing the holding means and the adjusting unit, the cost increases.

  The present invention has been made in view of such problems, and can control the orientation of an image displayed on a liquid crystal panel without increasing the cost and without reducing the size and production yield of the liquid crystal panel. An object is to provide an image projection apparatus.

The optical functional device according to the first invention of the present application includes a plurality of optical modulation elements that modulate input light, an optical combining unit that combines output light from the plurality of optical modulation elements by optical means, and the plurality A plurality of memories arranged corresponding to the optical modulation elements , each storing frame image data composed of signals output to the corresponding optical modulation elements, and outputting read signals to the corresponding optical modulation elements And an address control unit for designating addresses of the plurality of storage means, and a storage position of a signal supplied from the outside to each storage means is selected by designating the address, and signal input to the optical modulation element is selected by specifying the address in said storage means, said address control unit, from the outside to said plurality of storage means When storing the item, an address of the plurality of storage means specified by the common sequence, when selecting the signals input into the plurality of optical modulation elements are input to at least one of said optical modulation element The addressing order of the plurality of storage means is specified so that the addressing order of the signals to be stored in the storage means is different from the addressing order of the signals input to the other optical modulation elements in the storage means. .

An optical functional device according to a second invention of the present application includes a plurality of optical modulation elements that modulate input light, an optical combining unit that combines output light from the plurality of optical modulation elements by optical means, and the plurality A plurality of memories arranged corresponding to the optical modulation elements , each storing frame image data composed of signals output to the corresponding optical modulation elements, and outputting read signals to the corresponding optical modulation elements And an address control unit for designating addresses of the plurality of storage means, and a storage position of a signal supplied from the outside to each storage means is selected by designating the address, and signal input to the optical modulation element is selected by specifying the address in said storage means, said address control unit, from the outside to said plurality of storage means When storing the items, at least addressing order in the memory means of the signal inputted to the one found addressing order in the memory means of the signal inputted to the other of said optical modulation element of the optical modulation element The addresses of the plurality of storage means are designated differently from each other, and when selecting signals to be input to the plurality of optical modulation elements, the addresses of the plurality of storage means are designated in a common order. And

An optical functional device according to a third invention of the present application includes a plurality of optical modulation elements that modulate input light, an optical combining unit that combines output light from the plurality of optical modulation elements by optical means, and the plurality A plurality of memories arranged corresponding to the optical modulation elements , each storing frame image data composed of signals output to the corresponding optical modulation elements, and outputting read signals to the corresponding optical modulation elements Means, an address control unit for designating addresses of the plurality of storage means, correction processing means for performing fixed processing on input data from the plurality of storage means and outputting correction output data, It generates a control signal based on the input data from the storage means, and an input signal processing means for outputting to said optical modulation element and said storage means, or external to said each of the storage devices Storage location of the supplied signals is selected by designating the address, also, the signal inputted to said optical modulation element is selected by specifying the address in said storage means, said address control unit When storing signals from the outside in the plurality of storage means, the addresses of the plurality of storage means are designated in a common order, and when selecting signals input to the plurality of optical modulation elements, at least one addressing order in the storage means of the signal input to the other of said optical addressing order in the storage means of the signal input to the modulation device and differently the plurality of storage means of the optical modulation element It is characterized by designating the address .

An optical functional device according to a fourth invention of the present application includes a plurality of optical modulation elements that modulate input light, an optical combining means that combines a plurality of output lights from the optical modulation elements by optical means, A plurality of memories arranged corresponding to the optical modulation elements , each storing frame image data composed of signals output to the corresponding optical modulation elements, and outputting read signals to the corresponding optical modulation elements Means, an address control unit for designating addresses of the plurality of storage means, correction processing means for performing fixed processing on input data from the plurality of storage means and outputting correction output data, It generates a control signal based on the input data from the storage means, and an input signal processing means for outputting to said optical modulation element and said storage means, or external to said each of the storage devices Storage location of the supplied signals is selected by designating the address, also, the signal inputted to said optical modulation element is selected by specifying the address in said storage means, said address control unit , when storing a signal from the outside to said plurality of storage means, the addressing order in the memory means of the signal inputted to at least one of said optical modulation element is input to the other of said optical modulation element as different from the addressing order in the memory means of the signal, the address of said plurality of storage means, when selecting the signals input into the plurality of optical modulation elements, of the plurality of storage means The address is specified in a common order .

  It is preferable that the signal input to the optical modulation element is correction output data obtained by reading data stored in the storage unit and performing a certain process on the read data by the correction processing unit.

  Further, the signal input to the optical modulation element may be the correction output data read out after the correction output data that has been subjected to a fixed process by the correction processing means is stored in the storage means. .

  Furthermore, the signal input to each of the optical modulation elements is, for example, image data for light of three different wavelengths.

  Furthermore, the optical modulation element is, for example, a transmissive liquid crystal display panel.

  Moreover, it is preferable that the said optical composition means has a means to synthesize | combine, expand, and project the image displayed by the said transmissive liquid crystal display panel.

An optical display method according to a fifth invention of the present application includes: a plurality of optical modulation elements that modulate input light; an optical combining means that combines a plurality of output lights from the optical modulation elements by optical means; They are arranged corresponding to the optical modulation element, respectively, corresponding in the optically functional device having a plurality of storage means for storing frame image data composed of signals to be output to the optical modulation element, the plurality of storage means Storing signals in the plurality of storage units by designating addresses in the plurality of storage units in a common order;
Selecting a signal to be input to the optical modulation element by designating an address in the plurality of storage means; and combining a plurality of output lights from the optical modulation element by an optical means, The addressing order in the storage means of the signal input to at least one of the optical modulation elements is different from the addressing order in the storage means of the signals input to the other optical modulation elements.

An optical display method according to a sixth invention of the present application includes a plurality of optical modulation elements that modulate input light, an optical combining means that combines a plurality of output lights from the optical modulation elements by optical means, and the plurality They are arranged corresponding to the optical modulation element, respectively, corresponding in the optically functional device having a plurality of storage means for storing frame image data composed of signals to be output to the optical modulation element, the plurality of storage means the signal input to, by specifying an address in said plurality of storage means, and storing in said plurality of storage means, a signal to be input to the optical modulation element, specifying an address in said plurality of storage means And a step of synthesizing a plurality of output lights from the optical modulation element by optical means. The addressing order in the storage means when a signal input to one is written to the storage means, and the storage means when a signal input to the other optical modulation element is written to the storage means address Ri and order specified Do different, and wherein the addressing order in the memory means for selecting a signal to be inputted to each of said optical modulation element is common to each other.

  The signal input to each of the optical modulation elements is, for example, image data for light having three different wavelengths.

  The optical modulation element is, for example, a transmissive liquid crystal display panel.

  Furthermore, it is preferable that the optical composition means has means for synthesizing, enlarging and projecting an image displayed by the transmissive liquid crystal display panel.

  In the optical functional device and the optical display method according to the present invention having the above-described configuration, the frame image data for each light of the optical functional device is stored in each memory, and the image data is stored in the liquid crystal display panel by reading the frame image data. Whether the writing order to the memory (memory address access order) is the same for each light, and the reading order (memory address access order) is appropriately changed according to the display scanning direction of the liquid crystal display panel at the time of reading. Alternatively, the writing order (memory address access order) to the memory is appropriately changed according to the display scanning direction of the liquid crystal display panel, and the same reading order (memory address access order) is set for each light at the time of reading.

  As a result, the direction of the display image on the liquid crystal display panel is reversed for each light necessary to synthesize and project an image in the same display direction as the input image on the screen. Therefore, even if the display scanning direction of the liquid crystal display panel is the same, the order of video signals supplied to the panel using the memory is changed by changing the address access order in writing to or reading from the memory by the panel. Upside down is realized.

  According to the present invention, when the number of times of image folding (number of times of image reversal) differs in each color in the optical composition system for combining the light of each color and displaying the image, the image data of the light of each color is correspondingly stored in each memory. The order in which data is written or the order in which data is read out from each memory is appropriately changed. Therefore, even if the display scanning directions of the data line driving circuit and the gate line driving circuit of each color liquid crystal display panel are the same, the inversion of the image necessary for each color light Can be realized.

  Accordingly, since the display scanning directions of the liquid crystal display panels are the same, the shift registers in the data line driving circuit and the gate line driving circuit on the liquid crystal display panel need only be in a single direction, and the bidirectional scanning function is unnecessary. In addition, the scale of the data line and gate line driving circuit manufactured in the liquid crystal display panel can be suppressed, and furthermore, only one basic correction coefficient holding means and adjusting circuit for adjusting the common voltage applied to the common electrode are required. The drive circuit area on the panel can be reduced. As a result, downsizing of the panel and the like, and downsizing of the image projection apparatus are promoted. Furthermore, since the number of elements, circuit scale, and area of these drive circuits can be significantly suppressed, the yield of the liquid crystal display panel can be improved.

  Further, according to the present invention, since the display scanning directions of the liquid crystal display panels for the respective color lights can be made the same, the storage means for the reference correction value and the count value for correcting unevenness that occurs inherently in each liquid crystal display panel is provided. One is sufficient for each liquid crystal display panel, the circuit scale for unevenness correction can be suppressed, and only one correction calculation process is required. Further, since the same drive circuit for the liquid crystal display panel can be used, it is possible to use the same liquid crystal display panel for each color light used for projecting an image, thereby reducing the cost.

  Note that when the frame frequency supplied to the liquid crystal display panel exceeds the frame frequency of the image input data, the pixel voltage holding time of the liquid crystal display panel can be shortened, and the image contrast can be improved and the high quality. Can be achieved. Furthermore, the present invention is applied to a case where a drive system that performs serial / parallel conversion (S / P conversion) in the front end unit and distributes each color digitally corrected image data to, for example, 6 systems and expands 6 times. If used, it is possible to change the order of reversing the display image in the left-right direction at the input stage of the front end, so that the function of changing the order by digital / analog conversion (D / A conversion) output becomes unnecessary.

  Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. First, a first embodiment of the present invention will be described with reference to FIG. The optical function device according to the present embodiment is a projector that enlarges and projects a composite image of a transmission image by an active matrix type liquid crystal panel. FIG. 1 is a block diagram illustrating a projector according to the present embodiment. The projector 1100 includes three liquid crystal display panels 100R, 100G, and 100B, an image signal processing circuit unit 200, front end units 300R, 300G, and 300B, and memory units 400R, 400G, and 400B. The liquid crystal display panels 100R, 100G, and 100B correspond to primary colors of R (red), G (green), and B (blue), respectively. In the following, the symbol with R corresponds to red, the symbol with G corresponds to green, and the symbol with B corresponds to blue. In the liquid crystal display panels 100R, 100G, and 100B, liquid crystal is sealed between an element substrate and a counter substrate. On the element substrate outside the display region 103, a data line driving circuit 101 and a gate line driving circuit 102 are provided. Is formed. On the other hand, a plurality of data lines are formed in the horizontal direction (X direction) and a plurality of gate lines are formed in the vertical direction (Y direction) on the element substrate of the display region 103, and each data line and each gate are formed. A thin film transistor (TFT) functioning as a switching element is provided at an intersection with the line, its gate electrode is connected to the gate line, its source line is connected to the data line, and its drain electrode is connected to the pixel electrode. One pixel is formed by the TFT, the pixel electrode, and the counter electrode provided on the counter substrate. The data line driving circuit 101 and the gate line driving circuit 102 drive a plurality of data lines and a plurality of gate lines formed in the display region 103, and the display scanning direction is the same for all liquid crystal display panels. It has become the direction. In the present invention, the number of dots in the display area may be any number, but in the present embodiment, it is 5 dots × 5 dots for convenience of explanation.

  The image signal processing circuit unit 200 includes a buffer 210, a timing control unit 220, and a correction processing unit 230. The timing controller 220 generates a clock by a PLL circuit (Phase-Locked Loop circuit) based on the input synchronization signal V / HSync. Then, input / output timing control to the buffer 210 for temporarily storing the input color image data DR, DG, and DB, and the color images for the memories 400R, 400G, and 400B corresponding to the color image data DR, DG, and DB, respectively. Address management and write / read timing control management of data DR, DG and DB, and drive timing control signal output to front end units 300R, 300G and 300B are performed. The correction processing unit 230 performs gamma correction and color unevenness correction corresponding to the display characteristics of the liquid crystal display panels 100R, 100G, and 100B on the color image data DR, DG, and DB read from the memories 400R, 400G, and 400B. The digitally corrected image data DR ′, DG ′, and DB ′ are output.

  The front end unit 300 performs digital / analog conversion (D / A conversion) and serial / parallel conversion (S / P) on the digital corrected image data DR ′, DG ′, and DB ′ output from the image signal processing circuit unit 200. Conversion) to amplify the voltage level necessary for driving the liquid crystal display panel 100, and output image signals VIDR, VIDG, and VIDB. Here, the S / P conversion is distributed to, for example, six systems for each color digital correction image data DR ′, DG ′, and DB ′, and is expanded six times. The reason for the conversion to these six systems is that in the sampling circuit of the liquid crystal display panel 100 (built in the data line driving circuit 101), the application time of the image signal supplied to the TFT is lengthened to sample the data signal of the liquid crystal display panel. In addition, the charge / discharge time is sufficiently secured. Further, the drive timing control signal generated by the timing control unit 220 of the image signal processing circuit unit 200 is amplified to a voltage level necessary for driving the liquid crystal display panel 100.

  The memory unit 400 has a memory capacity for two screens for each color, and stores each color image data DR, DG, and DB by address control and timing control from the timing control unit 220 provided in the image signal processing circuit unit 200. To do.

  In FIG. 1, the color image data DR, DG, and DB are read from the memories 400R, 400G, and 400B and then corrected by the correction processing unit 230, so that the digital corrected image data DR ′, DG ′, and DB ′ are stored. The configuration output to the front end units 300R, 300G, and 300B is shown, but after the color image data DR, DG, and DB are corrected by the correction processing unit 230, the digital corrected image data DR ′, DG ′, and DB are displayed. 'May be stored in the memories 400R, 400G, and 400B.

  Next, the optical configuration of the projector will be described. FIG. 2 is a plan view showing an optical configuration of the projector. As shown in this figure, a projector 1100 includes a lamp unit 1110 made of a white light source such as a halogen lamp. The projection light emitted from the lamp unit 1110 is separated into R, G, and B primary colors by the four mirrors 1120 and the two dichroic mirrors 1130, and the liquid crystal display panels 100R, 100G as light valves, respectively. It is incident on 100B.

  The liquid crystal display panels 100R, 100G, and 100B are supplied with R, G, and B image signals processed by the image signal processing circuit 300 (not shown in FIG. 2), respectively. Accordingly, the liquid crystal display panels 100R, 100G, and 100B function as light modulators that generate R, G, and B primary color images, respectively. Light modulated by these liquid crystal display panels enters the dichroic prism 1140 from three directions. In the dichroic prism 1140, the R and B light is refracted by 90 degrees at the reflecting surfaces 1140R and 1140B, while the G light travels straight. As a result, a composite image of each primary color image is projected onto a screen or the like via the projection lens 1150.

  Next, the overall operation of the image projection apparatus in the first embodiment will be described. FIG. 3 shows the timing of writing / reading to / from the memory when the vertical synchronization signal VSync 320 having the same frequency as the vertical synchronization signal VSync 310 of the input image data DR, DG and DB is displayed.

  The image data DR, DG, and DB input to the image signal processing circuit 200 constitute one screen for each color at the frequency (frame frequency) of the vertical synchronization signal VSync 310 as shown in FIG. For example, when the frame frequency VSync 310 is 60 Hz, one image is input every 1/60 second. In FIG. 3, the image data is input in a temporal order of A, B, C, D,.

  The timing control unit 220 provided in the image signal processing circuit 200 generates a vertical synchronization signal VSync 320 having a frequency equal to that of the input vertical synchronization signal VSync 310 by using an internal clock circuit such as a PLL below the synchronization signal V / HSync. In the present embodiment, the image data to the liquid crystal display panel 100 is output based on a vertical synchronization signal VSync 320 having the same-magnification frequency, which is a constant-speed drive signal shown in FIG.

  A memory for storing image data of each color has a memory capacity for two screens. Therefore, as shown in FIG. 3, during the period (vertical scanning period) in which the image data of frame A is input, the image data of frame A is written in the memory area # 1, and the image data of the next frame B is stored. During the input period, the image data of frame A stored in the memory area # 1 is read at the frequency of the vertical synchronization signal VSync320 equal to the vertical synchronization signal VSync310 of the input image data, and at the same time, the frame is stored in the memory area # 2. B image data can be written. Similarly, during the period when the image data of frame C is input, the image data of frame C is written into the memory area # 1, and the image data of frame B is simultaneously transferred from the memory area # 2 to the frequency of the vertical synchronization signal VSync320. Are sequentially read out. Note that the timing of the image data writing operation of the frame and the image data reading operation of the previous frame is input using the buffer 210 provided in the image signal processing circuit 200 and the read clock frequency from the memory 400. By using a horizontal blanking period during the horizontal synchronization period for reading out from the memory 400, the clock frequency of the image data is faster than the clock frequency of the image data, so that one horizontal line from the buffer 210 to the memory 400 is read between the horizontal lines. Writing becomes possible.

  Next, an operation for realizing the reversal of the image necessary when the dichroic prism 1140 combines the respective colors to form the projection image by changing the order of reading the data written in the memory 400 will be described.

  FIG. 4 is a perspective view showing an optical positional relationship between the dichroic prism 1140 and the liquid crystal display panels 100R, 100G, and 100B. FIG. 4 shows a case where the letter “F” is projected on the screen 500. The display direction of the image projected on the screen 500 is normally displayed from left to right and from top to bottom. In order to obtain such a display on the screen 500, the display direction on the liquid crystal display panel needs to be a direction indicated by an arrow in the figure. The projection lens 1150 (not shown) inverts the image vertically and horizontally, and the images of the R light liquid crystal display panel 100R and the B light liquid crystal display panel 100B are reflected by the reflecting surfaces 1140R and 1140B of the dichroic prism 1140, respectively. This is because the left and right are reversed. Accordingly, the upper and lower display directions of the three liquid crystal display panels are displayed from the bottom to the top, and the left and right display directions of the respective liquid crystal display panels viewed from the light incident side are the R light liquid crystal display panel 100R and the B light liquid crystal display panel. 100B must be displayed from left to right, and the G light liquid crystal display panel 100G must be displayed from right to left. The display of the liquid crystal display panel 100 is such that the images of the R light liquid crystal display panel 100R and the B light liquid crystal display panel 100B are upside down with respect to the image on the screen. It is necessary to display the reversed relationship, that is, only the G light liquid crystal display panel 100G has the left and right reversed. This is because the number of times of image folding (number of times of image reversal) in the optical composition system for combining the light of each color and displaying the image is different for each color.

  As a method of changing the display direction of the image by the display liquid crystal panels 100R, 100G, and 100B of each light, the access order of addresses at the time of reading from the corresponding memories 400R, 400G, and 400B storing the frame image data. Is controlled by the timing control unit 220 provided in the image signal processing circuit 200 in this embodiment.

  First, a memory writing procedure of image data will be described. 5 is a diagram showing an input image when the screen display area is 5 × 5 dots and the input image is the letter “F”, and FIG. 6 is an arrangement of pixel data of the input image shown in FIG. FIG. FIG. 7 is a conceptual diagram showing addresses of the memory 400 for storing image data. FIG. 8 is a conceptual diagram showing the stored value of each address in the memory.

  The image data in FIG. 5 originally has intermediate gradation bits such as 8 bits for each color light, but in order to simplify the description, description will be made on the case of binary values of light (0) and dark (1) without intermediate gradation. . The image data is normally input sequentially from the left to the right and from the top to the bottom of the screen. When the input image is “F” as shown in FIG. 5, the image data is arranged according to the arrangement of the pixel data in FIG. Pixel data is 11: 0, 12: 1, 13: 1,..., 15: 1, 21: 0, 22: 1,..., 25: 0, 31: 0,. , 54: 0, 55: 0 are sequentially input, and in ascending order (D11, D12, D13,..., D15, D21,..., D25) to the respective addresses of the memories 400R, 400G, and 400B for each color light. , D31,..., D54, D55). That is, the pixel data of the input screen arrangement 11 in FIG. 6 is stored in D11 of FIG. 7, and the following 12 pixel data are stored in D12. For this reason, the stored values at the addresses of the memories 400R, 400G, and 400B have the contents shown in FIG. 8 in which the stored values at the addresses corresponding to FIG.

  Next, a memory reading procedure for image data will be described. As described above, only the G light liquid crystal display panel 100G needs to display the right and left reversed with respect to the R light liquid crystal display panel 100R and the B light liquid crystal display panel 100B. Here, the data line driving circuit 101 and the gate line driving circuit 102 of the three liquid crystal display panels 100R, 100G, and 100B are displayed in the same manner for all three liquid crystal display panels, for example, from left to right and from bottom to top. The scanning direction. In the case of supplying image data to the R-light and B-light liquid crystal display panels 100R and 100B, the image data stored in the memories 400R and 400B are read from the memory addresses in ascending order in the same order as input, that is, D11 , D12, ..., D15, D21, ..., D25, D31, ..., D35, D41, ... D45, D51, ..., D55 in this order, and input to the liquid crystal display panel The liquid crystal display panels 100R and 100B viewed from the light incident side display a vertically inverted image as shown in FIG. 9 in which the row of the input image in FIG. 5 is inverted. As a result, the respective images of the liquid crystal display panels 100R and 100B are horizontally reversed at the reflecting surfaces 1140R and 1140B as shown in FIG. 4, and are further reversed vertically and horizontally by the projection lens 1150 (not shown). The letter “F” is projected on 500.

  On the other hand, in the case of supplying image data to the G-light liquid crystal display panel 100G, the image data stored in the memory 400G is read in the reverse order (descending order) from the column data when input, and the row data is read as input. Read from memory addresses in the same order (ascending order). That is, D15, D14, D13, D12, D11, D25, D24, ..., D21, D35, ... D31, D45, ..., D41, D55, ..., D51 are read in this order, and the liquid crystal When input to the display panel, the data line driving circuit 101 and the gate line driving circuit 102 of the liquid crystal display panel 100 are all in the same display scanning direction (from left to right and from bottom to top). The display panel 100G displays a vertically and horizontally reversed image as shown in FIG. 10 in which the rows and columns of the input image in FIG. 5 are reversed. As a result, the image of the liquid crystal display panel 100G is inverted vertically and horizontally by a projection lens 1150 (not shown) as shown in FIG.

  That is, only the column data reading of the image data of the memory 400G supplied to the G light liquid crystal display panel 100G is performed in the reverse order (descending order) different from the R light and the B light, thereby displaying the necessary light on the liquid crystal display panel of each light. An image in the direction can be displayed, and an image in the same display direction as the input image can be synthesized and projected on the screen.

  In this description, the scanning display direction of the liquid crystal display panel 100 is from left to right and from bottom to top. However, the present invention is not limited to this. The reading order of the addresses is the reverse order (descending order) for the row and column for the R light and B light, that is, D55, D54, ..., D51, D45, ..., D41, D35, ... D31, In the order of D25,..., D15,..., D12, D11, in the G light, the columns are in the same order as the input (ascending order) and the rows are in the reverse order (descending order), that is, D51, D52,. , ..., D45, D31, ..., D35, D21, ..., D11, ..., D14, D15, etc. by appropriately changing according to the display scanning direction of the liquid crystal display panel. Input image on screen Flip can be projected by the display direction.

  According to the first embodiment configured as described above, the frame image data of each light is stored in each memory, and the writing order to the memory is the same writing order (memory address access order) in each memory. In order to synthesize and project an image with the same display direction as the input image on the screen by appropriately changing the reading order (memory address access order) according to the display scanning direction of the liquid crystal display panel when reading this from each memory. Inversion of the display image on the display liquid crystal panel for each light necessary for the operation is performed.

  As a result, when the number of times of image folding (number of times of image reversal) in the optical combining means for combining the light of each color and displaying the image is different for each color, the data line driving circuit and the gate line driving circuit of the liquid crystal display panel of each color Even if the display scanning direction is the same, it is possible to realize inversion of an image necessary for each color light.

  Accordingly, the shift register in the data line and gate line driving circuit manufactured in the liquid crystal display panel can be unidirectional and does not need the bidirectional scanning function, so that the driving circuit scale can be reduced and at the same time common. A single basic correction coefficient holding means and adjustment circuit for adjusting the common voltage applied to the electrodes are sufficient, and the area of the drive circuit on the panel can be reduced. Thereby, size reduction, such as a narrow frame of a panel, is realizable.

  In addition, it is possible to use the same liquid crystal display panel for all the colors, and the cost can be reduced. Furthermore, since the number of elements, circuit scale, and area of these circuit portions can be significantly suppressed, the yield of the liquid crystal display panel can be improved.

  Further, the reference correction value and the count value storage means for correcting unevenness that occurs inherently in each liquid crystal display panel have the same display scanning direction of the liquid crystal display panel for each color light. Therefore, the circuit scale can be suppressed, and the correction calculation process can be completed by a single operation.

  Next, a second embodiment of the present invention will be described. However, in the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. FIG. 11 is a conceptual diagram showing stored values at each address of the memory.

  The image projection apparatus of the second embodiment is almost the same as that of the first embodiment in terms of hardware, but each of the elements necessary for synthesizing and projecting an image in the same display direction as the input image on the screen. Reversing the display image of the optical display liquid crystal panel, changing the access order of the memory addresses according to the display scanning direction of each optical liquid crystal display panel when writing image data to the memory, and at each panel when reading from the memory This is different from the first embodiment in that it is performed in the same access order.

  First, a memory writing procedure of image data will be described. As in the first embodiment, the case where the screen display area is 5 × 5 dots and the input image is the letter “F” will be described.

  As described above, only the G light liquid crystal display panel 100G needs to display the right and left reversed with respect to the R light liquid crystal display panel 100R and the B light liquid crystal display panel 100B. For this reason, as described below, the access order of the memory addresses at the time of writing the R light and B light image data to the memories 400R and 400B and at the time of writing the G light image data to the memory 400G is changed.

  When writing R light and B light image data into the memories 400R and 400B, the image data is normally input sequentially from the left to the right and from the top to the bottom of the screen. As shown in FIG. As in the case of the first embodiment, the pixel data is 11: 0, 12: 1, 13: 1,..., 15: 1, 21: 1 according to the arrangement of the pixel data in FIG. The values 0, 22: 1,..., 25: 0, 31: 0,..., 54: 0, 55: 0 are sequentially input, and ascending order (D11, D12) to the respective addresses of the memories 400R and 400B. , D13, ..., D15, D21, ..., D25, D31, ..., D54, D55). For this reason, the stored value of each address of the memories 400R and 400B has the contents shown in FIG. 11A in which the stored values at the addresses corresponding to FIG.

  On the other hand, when the G light image data is written to the memory 400G, the column data is written in the reverse order (descending order), and the row data is written in the ascending order. That is, D15, D14, ..., D11, D25, D24, ..., D21, D35, ... D31, D45, ... D41, D55, ..., D52, D51 are accessed in this order. Write. For this reason, the stored value of each address in the memory 400G has the contents shown in FIG. 11B in which the stored values at the addresses corresponding to FIG.

  Next, a memory reading procedure for image data will be described. The data line driving circuit 101 and the gate line driving circuit 102 of the three liquid crystal display panels 100R, 100G, and 100B are all set to the same display scanning direction, for example, from left to right and from bottom to top. In the second embodiment, when supplying image data to the R light, G light, and B light liquid crystal display panels 100R, 100G, and 100B, the image data stored in the memories 400R, 400G, and 400B are in the same order in each panel. , D15, D12,..., D15, D21, ..., D25, D31, ..., D35, D41, ... D45, D51, ..., D55. Are read in this order and input to the liquid crystal display panel.

  In the liquid crystal display panel 100R for R light and the liquid crystal display panel 100B for B light as viewed from the light incident side, the vertically inverted image shown in FIG. 9 in which the row of the input image in FIG. 5 is inverted is the same as in the first embodiment. indicate. As a result, the respective images of the liquid crystal display panels 100R and 100B are reversed left and right at the reflecting surfaces 1140R and 1140B as shown in FIG. 4, and further upside down and left and right reversed by the projection lens 1150 (not shown). The letter “F” is projected on 500.

  In the case of the G light liquid crystal display panel 100G, data is read from the memory addresses in the same order (ascending order) from the R light and the B light from the memory 400G. Since the data line driving circuit 101 and the gate line driving circuit 102 of the liquid crystal display panels 100R, 100G, and 100B are all in the same display scanning direction (from left to right and from bottom to top), the liquid crystal display panel viewed from the light incident side. 100G displays a vertically and horizontally reversed image as shown in FIG. 10 in which the rows and columns of the input image in FIG. 5 are reversed. As a result, the image of the liquid crystal display panel 100G is inverted vertically and horizontally by a projection lens 1150 (not shown) as shown in FIG.

  That is, only when writing the column data of the image data of the memory 400G supplied to the G light liquid crystal display panel 100G, memory access is performed in the reverse order (descending order) different from the R light and B light, and when reading, the R light, G light and B By performing the same order (ascending order) on each panel of light, it is possible to display an image in the required display direction on the liquid crystal display panel of each light, and to synthesize and project an image in the same display direction as the input image on the screen. it can.

  In this description, the scanning display direction of the liquid crystal display panel 100 is from left to right and from bottom to top. However, the present invention is not limited to this. When writing data to the memory, the access order of the memory addresses is the reverse order (descending order) for both the rows and columns for R light and B light, that is, D55, D54,..., D51, D45,. D41, D35, ... D31, D25, ..., D15, ..., D12, D11. In G light, columns are in ascending order and rows are in reverse order (descending order), that is, D51, D52, ... , D55, D41, ..., D45, D31, ..., D35, D21, ..., D11, ..., D14, D15, etc., depending on the display scanning direction of the liquid crystal display panel. The input image can be scanned by changing It can be projected in the same display direction as the input image to lean.

  According to the second embodiment configured as described above, when the frame image data of each light is stored in each memory and is written in each memory, the writing order (memory address access order) is set to that of the liquid crystal display panel. The display direction is appropriately changed according to the display scanning direction, and when reading from the memory, the same reading order (memory address access order) is used for each light to synthesize and project an image in the same display direction as the input image. Inversion of the display image of the display liquid crystal panel for each light necessary for this is performed. Thereby, the effect similar to 1st Embodiment is acquired.

  Next, a third embodiment of the present invention will be described with reference to FIG. However, in the third embodiment, the same components as those in the first and second embodiments are denoted by the same reference numerals, and detailed description thereof is omitted. FIG. 12 is a timing chart for explaining writing / reading of input image data and a memory in the third embodiment of the present invention. The image projection apparatus of the third embodiment is almost the same as that of the first and second embodiments in terms of hardware, but with respect to the vertical synchronization signal VSync 310 of the input image data DR, DG, and DB. This is different from the first and second embodiments in that the vertical synchronization signal VSync 330 having a frequency three times as high is displayed.

  In FIG. 12, the operation of the image projection apparatus according to the third embodiment, particularly in the case of displaying with the vertical synchronization signal VSync330 having the same triple frequency as the vertical synchronization signal VSync310 of the input image data DR, DG and DB. The timing of writing / reading to / from the memory will be described.

  As shown in FIG. 12, the image data DR, DG, and DB input to the image signal processing circuit 200 constitute one screen at the frequency (frame frequency) of the vertical synchronization signal VSync 310 for each color. For example, when the frame frequency VSync 310 is 60 Hz, one image is input every 1/60 second. As shown in the input image data in FIG. 12, the image data is input in the temporal order of A, B, C, D,.

  The timing control unit 220 provided in the image signal processing circuit 200 generates a vertical synchronization signal VSync 330 having a frequency three times that of the input vertical synchronization signal VSync 310 by using an internal clock circuit such as a PLL below the synchronization signal V / HSync. To do. As shown in FIG. 12, in this embodiment, the image data to the liquid crystal display panel 100 is output based on the vertical synchronization signal VSync 330 having a frequency three times that of the image data.

  A memory for storing image data of each color has a memory capacity for two screens. For this reason, as shown in FIG. 12, during the period (vertical scanning period) in which the image data of frame A is input, the image data of frame A is written in the memory area # 1, and the image data of the next frame B is stored. During the input period, the image data of frame A stored in the memory area # 1 is read out three times at the frequency of the vertical synchronizing signal VSync 320 that is three times the frequency of the vertical synchronizing signal VSync 310 of the input image data, and at the same time The image data of frame B can be written in the area # 2. Similarly, during the period when the image data of frame C is input, the image data of frame C is written into the memory area # 1, and the image data of frame B is simultaneously transferred from the memory area # 2 to the frequency of the vertical synchronization signal VSync320. Read out three times in sequence. Here, the timing of the writing operation of the image data of the frame and the reading operation of the image data three times before the frame by using the buffer 210 provided in the image signal processing circuit 200 is used. Is set to be faster than the clock frequency of the input image data, and one horizontal line from the buffer 210 to the memory 400 is read between a plurality of horizontal lines by using a horizontal blanking period during the horizontal synchronization period of reading from the memory 400. Minutes can be written.

  The operations other than those described above, the memory writing procedure and the reading procedure of the image data are the same as those described in the first and second embodiments.

  As a result, in addition to the same effects as in the first and second embodiments, the frame frequency supplied to the liquid crystal display panel exceeds the frame frequency of the image input data, so that the pixel voltage holding time of the liquid crystal display panel is shortened. It is possible to improve the image quality by improving the contrast of the image.

  In the above description, the case where the arrangement of pixel data corresponds to the row and column of the memory address has been described. However, the present invention is not limited to this, and the row and column of the memory address are switched. It may be stored.

  Further, in the above description, the projector installation was described assuming normal installation such as on a desk, but for example, when projecting the projector upside down, i.e., when used for ceiling fishing, Also, when projecting through a mirror, etc., by controlling the reading order of image data from the memory or writing to the memory as in the description of the first embodiment, the second embodiment, and the third embodiment. An image with the same display direction as the input image can be projected on the screen.

  Further, in the above description, the case where the frame frequency of the image to be displayed is equal to and three times the frame frequency of the input image has been described. However, the present invention is not limited to this, and the image data is stored in the memory and displayed. As long as the image frame frequency to be displayed is higher than the frame frequency of the input image, it is sufficient.

  In the description so far, the memory for storing the image data is assumed to be composed of one chip for each color, that is, a total of three chips. However, the present invention is not limited to this, and has a capacity for two screens for each color light. Alternatively, it may be configured as a one-chip memory.

  Note that the present invention is effective in a display device that combines display lights from a plurality of liquid crystal display panels to obtain a display image when the individual optical systems of the respective display lights are different. In particular, when the number of reflections of each display light is different from each other, it is necessary to flip the image upside down, left and right, or up and down and left and right, and the present invention can be used. Further, in the optical functional device and the optical display method according to the present invention, problems that occur in the devices according to Patent Documents 2 to 5 described above do not occur.

  Examples of the application of the present invention include an image combining device that combines a decomposed image using a prism and a mirror, and an image projection device such as a projector.

1 is a block diagram showing an electrical configuration of a projector according to a first embodiment of the invention. 1 is a plan view illustrating an optical configuration of a projector according to a first embodiment of the invention. It is a schematic diagram showing the timing of writing / reading to / from a memory in the case of displaying with a vertical synchronization signal VSync320 having the same frequency with respect to the vertical synchronization signal VSync310 of inputted image data DR, DG and DB. It is a perspective view which shows the optical positional relationship of the dichroic prism 1140 and the liquid crystal display panels 100R, 100G, and 100B. It is a figure which shows an input image when a screen display area is 5x5 dots and an input image is made into the character of "F". It is a figure which shows arrangement | positioning of the pixel data of the input image shown in FIG. It is a conceptual diagram which shows the address of memory 400R which stores image data, 400G, and 400B. FIG. 5 is a conceptual diagram illustrating stored values of addresses of memories 400R, 400G, and 400B in the projector according to the first embodiment of the present invention. It is a display image (vertically inverted image) of the liquid crystal display panels 100R and 100B in the projector according to the first embodiment of the present invention. It is a display image (vertically and horizontally reversed image) of the liquid crystal display panel 100G in the projector according to the first embodiment of the present invention. (A) is a conceptual diagram which shows the stored value of each address of memory 400R and 400B in the projector which concerns on the 2nd Embodiment of this invention. (B) is a conceptual diagram showing the stored value of each address of the memory 400G in the projector according to the second embodiment of the present invention. It is a schematic diagram which shows the timing explaining the writing / reading to the memory of the input image data in the 3rd Embodiment of this invention. It is a block diagram of a liquid crystal display panel. It is an example of the circuit which scans only from a single direction on a liquid crystal panel. It is an example of the circuit which can be scanned on both directions on a liquid crystal panel. It is a figure which shows the structure of clocked inverter 1506,1507. It is a figure which shows the structure of clocked inverter 1504, 1505.

Explanation of symbols

100R, 100G, 100B: Liquid crystal display panel 101: Data line driving circuit 102: Gate line driving circuit 103: Display area 200: Image signal processing circuit unit 210: Buffer 220: Timing control unit 230: Correction processing unit 300R, 300G, 300B : Front end portion 400R, 400G, 400B: Memory portion 1100: Projector 1110: Lamp unit 1120: Mirror 1130: Dichroic mirror 1140: Dichroic prism 1140R, 1140B: Reflecting surface 1150: Projection lens 310, 320, 330: Vertical synchronization signal 500 : Screen 600: Liquid crystal display panel 601: Data line drive circuit 6011: Shift register 6012: Analog switch 6013: Data signal input bus 602: Gate line drive Road 6021: shift register 6022: buffer 603: display area 6031: Data line 6032: gate line 6033: pixels 6034: thin film transistor TFT
6035: Liquid crystal cell 6036: Common electrode 1401, 1402: Transfer gate 1403: Inverter 1501, 1502: Transfer gate 1503, 1509: Inverter 1504, 1505, 1506, 1507: Clocked inverter 1508: NAND circuit 1601, 1701: p-channel type TFT
1602, 1702: n-channel TFT

Claims (14)

A plurality of optical modulation elements that modulate the input light;
Optical combining means for combining output light from the plurality of optical modulation elements by optical means;
A plurality of frames arranged corresponding to the plurality of optical modulation elements , each storing frame image data composed of a signal output to the corresponding optical modulation element, and outputting the read signal to the corresponding optical modulation element Storage means ,
An address control unit for designating addresses of the plurality of storage means ,
The storage position of the signal supplied from the outside to each storage means is selected by specifying its address, and the signal input to the optical modulation element is selected by specifying the address in the storage means And
When storing signals from the outside in the plurality of storage units, the address control unit designates addresses of the plurality of storage units in a common order, and selects signals input to the plurality of optical modulation elements. , said addressing sequence in said storage means at least one with a signal input of the optical modulation element, so as to be different from the addressing order in the storage means of the signal input to the other of said optical modulation element during An optical function device that designates addresses of the plurality of storage means . A plurality of optical modulation elements that modulate the input light;
Optical combining means for combining output light from the plurality of optical modulation elements by optical means;
A plurality of frames arranged corresponding to the plurality of optical modulation elements , each storing frame image data composed of a signal output to the corresponding optical modulation element, and outputting the read signal to the corresponding optical modulation element Storage means ,
An address control unit for designating addresses of the plurality of storage means ,
The storage position of the signal supplied from the outside to each storage means is selected by specifying its address, and the signal input to the optical modulation element is selected by specifying the address in the storage means And
Said address control unit, when storing a signal from the outside to said plurality of storage means, the addressing order in the memory means of the signal inputted to at least one of said optical modulation element, other of said optical modulation Specifies the address of the plurality of storage means so as to be different from the addressing order in the memory means of the signal to be input to the device, when selecting the signals input into the plurality of optical modulation elements, said plurality An optical function device , wherein addresses of storage means are designated in a common order . A plurality of optical modulation elements that modulate the input light;
Optical combining means for combining output light from the plurality of optical modulation elements by optical means;
A plurality of frames arranged corresponding to the plurality of optical modulation elements , each storing frame image data composed of a signal output to the corresponding optical modulation element, and outputting the read signal to the corresponding optical modulation element Storage means,
An address control unit for designating addresses of the plurality of storage means;
Correction processing means for performing fixed processing on input data from the plurality of storage means and outputting correction output data;
An input signal processing means for generating a control signal based on input data from the plurality of storage means and outputting the control signal to the optical modulation element and the storage means;
The storage position of the signal supplied from the outside to each storage means is selected by specifying its address, and the signal input to the optical modulation element is selected by specifying the address in the storage means And
When storing signals from the outside in the plurality of storage units, the address control unit designates addresses of the plurality of storage units in a common order, and selects signals input to the plurality of optical modulation elements. , said addressing sequence in said storage means at least one with a signal input of the optical modulation element, so as to be different from the addressing order in the storage means of the signal input to the other of said optical modulation element during An optical function device that designates addresses of the plurality of storage means . A plurality of optical modulation elements that modulate the input light;
Optical combining means for combining a plurality of output lights from the optical modulation element by optical means;
A plurality of frames arranged corresponding to the plurality of optical modulation elements, each storing frame image data composed of signals output to the corresponding optical modulation elements, and outputting the read signals to the corresponding optical modulation elements Storage means,
An address control unit for designating addresses of the plurality of storage means;
Correction processing means for performing fixed processing on input data from the plurality of storage means and outputting correction output data;
An input signal processing means for generating a control signal based on input data from the plurality of storage means and outputting the control signal to the optical modulation element and the storage means;
The storage position of the signal supplied from the outside to each storage means is selected by specifying its address, and the signal input to the optical modulation element is selected by specifying the address in the storage means And
Said address control unit, when storing a signal from the outside to said plurality of storage means, the addressing order in the memory means of the signal inputted to at least one of said optical modulation element, other of said optical modulation Specifies the address of the plurality of storage means so as to be different from the addressing order in the memory means of the signal to be input to the device, when selecting the signals input into the plurality of optical modulation elements, said plurality An optical function device , wherein addresses of storage means are designated in a common order .   The signal input to the optical modulation element is correction output data obtained by reading data stored in the storage unit and performing a predetermined process on the read data by the correction processing unit. 5. The optical function device according to 3 or 4.   The signal input to the optical modulation element is the correction output data that is stored in the storage means after being corrected by the correction processing means and is read out. The optical function device according to claim 3 or 4.   7. The optical function device according to claim 1, wherein the signal input to each of the optical modulation elements is image data for light of three different wavelengths.   The optical functional device according to claim 1, wherein the optical modulation element is a transmissive liquid crystal display panel.   9. The optical function device according to claim 1, wherein the optical combining unit includes a unit that combines, enlarges, and projects an image displayed by the transmissive liquid crystal display panel. A plurality of optical modulation elements that modulate the input light, an optical combining means that combines a plurality of output lights from the optical modulation elements by optical means, and a plurality of optical modulation elements that are arranged, In each of the optical function devices having a plurality of storage means for storing frame image data composed of signals output to the corresponding optical modulation elements
Storing the signals input to the plurality of storage means in the plurality of storage means by designating addresses in the plurality of storage means in a common order; and
Selecting a signal to be input to the optical modulation element by designating an address in the plurality of storage means;
Combining a plurality of output lights from the optical modulation element by optical means,
An optical display method characterized in that an addressing order in the storage means of signals input to at least one of the optical modulation elements is different from an addressing order in the storage means of signals input to other optical modulation elements. . A plurality of optical modulation elements that modulate the input light, an optical combining means that combines a plurality of output lights from the optical modulation elements by optical means, and a plurality of optical modulation elements that are arranged, In each of the optical function devices having a plurality of storage means for storing frame image data composed of signals output to the corresponding optical modulation elements
Storing the signals input to the plurality of storage units in the plurality of storage units by designating addresses in the plurality of storage units;
Selecting a signal to be input to the optical modulation element by designating an address in the plurality of storage means;
Combining a plurality of output lights from the optical modulation element by optical means,
The addressing order in the storage means when a signal input to at least one of the optical modulation elements is written to the storage means, and a signal input to another optical modulation element is written to the storage means Ri and the Do different addressing order in the storage means,
An optical display method characterized in that the addressing order in the storage means when selecting a signal to be input to each of the optical modulation elements is common to each other . Optical display method according to claim 10 or 11, wherein the signal are respectively inputted to the optical modulation element is image data for light of three different wavelengths. It said optical modulation element, an optical display method according to any one of claims 10 to 12, characterized in that a transmission type liquid crystal display panel. It said compositing means, synthesizes the image displayed by the transmissive liquid crystal display panel, an optical display method according to any one of claims 10 to 13, characterized in that it comprises means for enlarging and projecting.

Images