CN105609061B - A kind of modulator approach of LCOS liquid crystal device, apparatus and system - Google Patents

A kind of modulator approach of LCOS liquid crystal device, apparatus and system Download PDF

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Publication number
CN105609061B
CN105609061B CN201410669995.0A CN201410669995A CN105609061B CN 105609061 B CN105609061 B CN 105609061B CN 201410669995 A CN201410669995 A CN 201410669995A CN 105609061 B CN105609061 B CN 105609061B
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primary
liquid crystal
light
crystal device
primary lights
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CN105609061A (en
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郭祖强
王则钦
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Shenzhen Appotronics Corp Ltd
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Shenzhen Appotronics Technology Co Ltd
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Priority to PCT/CN2015/094682 priority patent/WO2016078559A1/en
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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • 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
    • G09G3/34—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 by control of light from an independent source
    • G09G3/3406—Control of illumination source
    • 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
    • G09G3/34—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 by control of light from an independent source
    • G09G3/36—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 by control of light from an independent source using liquid crystals

Abstract

This application discloses a kind of modulator approaches of LCOS liquid crystal device, apparatus and system, wherein this method comprises: determining LCOS liquid crystal device to times increment of the light transmission rate of the primary lights according to the maximum gradation value of at least one of source image frame primary lights；For at least one primary lights of source image frame, LCOS liquid crystal device is improved to the light transmission rate of the primary lights of source image frame according to times increment of the LCOS liquid crystal device to the light transmission rate of the primary lights；The corresponding output power for adjusting primary light source corresponding with primary lights each in source image frame, so that each primary lights that each primary light source issues are after the LCOS liquid crystal device, display image is formed, and the gray-scale intensity for showing each primary lights in image is identical as the gray-scale intensity of each primary lights in the source image frame or improves with same ratio.By the above-mentioned means, can be improved the light utilization efficiency of primary light source.

Description

A kind of modulator approach of LCOS liquid crystal device, apparatus and system
Technical field
This application involves field of liquid crystal display, more particularly to a kind of modulator approach of LCOS liquid crystal device, device and are System.
Background technique
Currently, the attached silicon of liquid crystal (English: Liquid Crystal on Silicon, abbreviation LCOS) display system has obtained It is widely applied.Generally in the LCOS display system of one chip, red, green, blue three primary colours light is successively incident on LCOS in timing It is modulated on liquid crystal device, the monochrome image of formation forms color image by the integrating effect of human eye.
The modulator approach of existing LCOS liquid crystal device is to be realized by modulating the light transmission rate of LCOS liquid crystal device to image ash The adjustment of rank brightness, specific modulation system are as follows: only bright to adjust image gray-scale level by controlling the light transmission rate of LCOS liquid crystal device Degree, when light transmission rate more hi-vision gray-scale intensity is bigger, and three primary light source is persistently opened with constant power.However, existing Have in modulation system, when the gray-scale intensity of image in picture signal is lower, then reduce the light transmission rate of LCOS liquid crystal device, This meeting so that light source issue light much all reflected and slatterned, cause the light utilization efficiency of light source lower.
Summary of the invention
The application provides a kind of modulator approach of LCOS liquid crystal device, apparatus and system, can be improved the light of primary light source Utilization rate.
The application first aspect provides a kind of modulator approach of attached silicon LCOS liquid crystal device of liquid crystal, comprising: according to source images The maximum gradation value of at least one of frame primary lights determines LCOS liquid crystal device to times increment of the light transmission rate of the primary lights； Multiplication at least one primary lights of source image frame, according to the LCOS liquid crystal device to the light transmission rate of the primary lights Amount improves LCOS liquid crystal device to the light transmission rate of the primary lights of source image frame；It is corresponding to adjust and each primary colours in source image frame The output power of the corresponding primary light source of light, so that each primary lights that each primary light source issues are through the LCOS liquid crystal device Afterwards, display image is formed, and the gray-scale intensity of each primary lights and each primary lights in the source image frame in the display image Gray-scale intensity is identical or is improved with same ratio.
With reference to first aspect, described according in source image frame at least one in the first possible embodiment of first aspect The maximum gradation value of kind primary lights determines that LCOS liquid crystal device includes: to obtain to the multiplication measurer body of the light transmission rate of the primary lights Take the maximum gradation value A of at least one of source image frame primary lightsi, wherein i is primary lights mark；By LCOS liquid crystal device to institute Times increment for stating the light transmission rate of primary lights is determined as Mi, wherein 1 < Mi≤ (K/Ai), wherein K is the LCOS liquid crystal device institute The maximum gradation value that can be shown.
The first possible embodiment with reference to first aspect, in the second possible embodiment of first aspect, the source The primary lights of picture frame include red primary light, green primary light and blue primary light.
The second possible embodiment with reference to first aspect, in the third possible embodiment of first aspect, the needle To at least one primary lights of source image frame, according to the LCOS liquid crystal device to times increment of the light transmission rate of the primary lights It improves LCOS to specifically include the light transmission rate of the primary lights of source image frame: according to the LCOS liquid crystal device to described red Times increment M of the light transmission rate of primary lightsRLCOS liquid crystal device is improved to the light transmission rate of the red primary light of source image frame LR；According to the LCOS liquid crystal device to times increment M of the light transmission rate of the green primary lightGLCOS liquid crystal device is improved to source The light transmission rate L of the green primary light of picture frameG；According to the LCOS liquid crystal device to the light transmission rate of the blue primary light Times increment MBLCOS liquid crystal device is improved to the light transmission rate L of the blue primary light of source image frameB。
The second possible embodiment with reference to first aspect, in the 4th possible embodiment of first aspect, the needle To at least one primary lights of source image frame, according to the LCOS liquid crystal device to times increment of the light transmission rate of the primary lights It improves LCOS liquid crystal device to specifically include the light transmission rate of the primary lights of source image frame: obtaining MR、MG、MBIn maximum Value Mmax, wherein MRIt is the LCOS liquid crystal device to times increment of the light transmission rate of the red primary light, MGFor the LCOS liquid Times increment of the brilliant device to the light transmission rate of the green primary light, MBIt is the LCOS liquid crystal device to the light of the blue primary light Times increment of transmitance；It is M in source image frame times of incrementmaxPrimary lights, according to the MmaxImprove LCOS liquid crystal device It is M in source image frame times of incrementmaxPrimary lights light transmission rate.
Third or the 4th possible embodiment with reference to first aspect, in the 5th possible embodiment of first aspect, The corresponding output power for adjusting primary light source corresponding with primary lights each in source image frame, so that each primary light source hair Each primary lights out form display image, and the grayscale for showing each primary lights in image after the LCOS liquid crystal device Brightness with the gray-scale intensity of each primary lights is identical in the source image frame specifically includes: according to the LCOS liquid crystal device to source figure As times increment M of the light transmission rate of every kind of primary lights of framei, by times increment M of the light transmission rateiPrimary lights corresponding to The output power of primary light source is adjusted to 1/MiTimes.
Third or the 4th possible embodiment with reference to first aspect, in the 6th possible embodiment of first aspect, The corresponding output power for adjusting primary light source corresponding with primary lights each in source image frame, so that each primary light source hair Each primary lights out form display image, and the grayscale for showing each primary lights in image after the LCOS liquid crystal device Brightness and the gray-scale intensity of each primary lights in the source image frame are specifically included with same ratio raising: according to the LCOS liquid crystal Times increment M of the device to the light transmission rate of every kind of primary lights of source image framei, by times increment M of the light transmission rateiPrimary colours The output power P of primary light source corresponding to lightiIt is adjusted to Pi', whereinAnd PR'+PG' +PB'=PR+P0+PB。
With reference to first aspect or the first to six any possible embodiment of first aspect, the 7th in first aspect are possible In embodiment, the adjustment of the output power of the primary light source specifically by adjust the primary light source open duration and/or Intensity is realized.
With reference to first aspect, in the 8th possible embodiment of first aspect, further includes: judge the instruction of user's input For energy conservation instruction or highlighted command；The corresponding output work for adjusting primary light source corresponding with primary lights each in source image frame Rate, so that each primary lights that each primary light source issues after the LCOS liquid crystal device, form display image, and described aobvious The gray-scale intensity of each primary lights is identical as the gray-scale intensity of each primary lights in the source image frame or year-on-year with phase in diagram picture Example is improved and is specifically included: corresponding to adjust and each primary colours in source image frame if the instruction of user input is energy conservation instruction The output power of the corresponding primary light source of light, so that each primary lights that each primary light source issues are through the LCOS liquid crystal device Afterwards, display image is formed, and the gray-scale intensity of each primary lights and each primary lights in the source image frame in the display image Gray-scale intensity is identical；If the instruction of user's input is highlighted command, corresponding to adjust and each primary lights in source image frame The output power of corresponding primary light source, so that each primary lights that each primary light source issues are through the LCOS liquid crystal device Afterwards, display image is formed, and the gray-scale intensity of each primary lights and each primary lights in the source image frame in the display image Gray-scale intensity is improved with same ratio.
The application second aspect provides a kind of modulating device of LCOS liquid crystal device, including determining module, raising module, tune Save module；The determining module is used to determine LCOS liquid crystal device according to the maximum gradation value of at least one of source image frame primary lights Described times of increment is sent to the raising module to times increment of the light transmission rate of the primary lights by part；The raising mould Block is used at least one primary lights for source image frame, according to the LCOS liquid crystal device to the light transmission rate of the primary lights Times increment improve LCOS liquid crystal device to the light transmission rate of the primary lights of source image frame；The adjustment module is for corresponding to The output power of primary light source corresponding with primary lights each in source image frame is adjusted, so that each base that each primary light source issues Coloured light forms display image, and the gray-scale intensity of each primary lights and institute in the display image after the LCOS liquid crystal device The gray-scale intensity for stating each primary lights in source image frame is identical or improved with same ratio.
In conjunction with second aspect, in the first possible embodiment of second aspect, the determining module includes acquiring unit And determination unit；The acquiring unit is used to obtain the maximum gradation value A of at least one of source image frame primary lightsi, and by institute State the maximum gradation value A of primary lightsiIt is sent to the determination unit, wherein i is primary lights mark；The determination unit is used for will LCOS liquid crystal device is determined as M to a times increment for the light transmission rate of every kind of primary lightsi, wherein 1 < Mi≤ (K/Ai), wherein K is institute State the maximum gradation value that LCOS liquid crystal device can be shown.
In conjunction with the first possible embodiment of second aspect, in the second possible embodiment of second aspect, the source The primary lights of picture frame include red primary light, green primary light and blue primary light.
It is described to mention in the third possible embodiment of second aspect in conjunction with the second possible embodiment of second aspect High module is specifically used for: according to the LCOS liquid crystal device to times increment M of the light transmission rate of the red primary lightRImprove LCOS Light transmission rate L of the liquid crystal device to the red primary light of source image frameR；According to the LCOS liquid crystal device to the green primary Times increment M of the light transmission rate of lightGLCOS liquid crystal device is improved to the light transmission rate L of the green primary light of source image frameG；Root According to the LCOS liquid crystal device to times increment M of the light transmission rate of the blue primary lightBLCOS liquid crystal device is improved to source images The light transmission rate L of the blue primary light of frameB。
It is described to mention in the 4th possible embodiment of second aspect in conjunction with the second possible embodiment of second aspect High module is specifically used for: obtaining MR、MG、MBIn maximum value Mmax, wherein MRIt is the LCOS liquid crystal device to the red primary Times increment of the light transmission rate of light, MGIt is the LCOS liquid crystal device to times increment of the light transmission rate of the green primary light, MBFor Times increment of the LCOS liquid crystal device to the light transmission rate of the blue primary light；It is M in source image frame times of incrementmax's Primary lights, according to the MmaxImproving LCOS liquid crystal device is M in source image frame times of incrementmaxPrimary lights light transmission rate.
In conjunction with the third or the 4th possible embodiment of second aspect, in the 5th possible embodiment of second aspect, The adjustment module is specifically used for times according to the LCOS liquid crystal device to the light transmission rate of every kind of primary lights of source image frame Increment Mi, by times increment M of the light transmission rateiPrimary lights corresponding to the output power of primary light source be adjusted to 1/MiTimes.
In conjunction with the third or the 4th possible embodiment of second aspect, in the 6th possible embodiment of second aspect, The adjustment module is specifically used for times according to the LCOS liquid crystal device to the light transmission rate of every kind of primary lights of source image frame Increment Mi, by times increment M of the light transmission rateiPrimary lights corresponding to primary light source output power PiIt is adjusted to Pi', Wherein,And PR'+PG'+PB'=PR+PG+PB。
It may in conjunction with second aspect or the first to six any possible embodiment of second aspect, the in second aspect the 7th In embodiment, the adjustment of the output power of the primary light source specifically by adjust the primary light source open duration and/or Intensity is realized.
It further include judgment module in the 8th possible embodiment of second aspect in conjunction with second aspect；The judgement mould Block is used to judge that the instruction of user's input to instruct or highlighted command for energy conservation, and the judging result is sent to the adjusting Module；The adjustment module is specifically used for: when the instruction that the user inputs is energy conservation instruction, corresponding adjusting and source image frame In the corresponding primary light source of each primary lights output power so that each primary lights that each primary light source issues are through the LCOS After liquid crystal device, display image is formed, and each in the gray-scale intensity and the source image frame of each primary lights in the display image The gray-scale intensity of primary lights is identical；
It is corresponding to adjust base corresponding with primary lights each in source image frame when the instruction of user input is highlighted command The output power of color light source, so that each primary lights that each primary light source issues after the LCOS liquid crystal device, are formed aobvious Diagram picture, and in the display image gray-scale intensity of the gray-scale intensity of each primary lights and each primary lights in the source image frame with Same ratio improves.
The application third aspect provides a kind of LCOS display system, including LCOS liquid crystal device, for driving the LCOS Driving circuit, red primary light source, green primary light source, the blue primary light source of liquid crystal device, the red primary light source, green primary light Source, blue primary light source light the incident LCOS liquid crystal device is modulated to form display image respectively；Wherein, the LCOS is aobvious Show that system further includes the modulating device of above-mentioned LCOS liquid crystal device.
Above scheme, which uses, adjusts the associativity of the output power of light transmission rate and light source, by improving LCOS liquid crystal device Part is to the light transmission rates of at least one of the three primary colours of source image frame primary lights, and the corresponding output work for adjusting the primary light source Rate realizes that the gray-scale intensity of each primary lights in display image is identical as the gray-scale intensity of primary lights each in source image frame or with phase It improves in proportion, according to the relationship between gray-scale intensity and the light transmission rate and light intensity of LCOS liquid crystal device it is found that primary lights are saturating The raising of rate is crossed, the reduction of the light intensity of the primary light source needed for necessarily causing to reach under same gray level brightness, therefore improve the base The light utilization efficiency of color light source, and the raising of primary colours light transmission rate also avoid the excessive invalid of the light of primary light source sending Reflection, further improves the light utilization efficiency of the primary light source.
Detailed description of the invention
Fig. 1 is the flow chart of one embodiment of modulator approach of the application LCOS liquid crystal device；
Fig. 2 is the flow chart of one embodiment of the application LCOS display system；
Fig. 3 is the relation schematic diagram between the light transmission rate and driving voltage of the application LCOS liquid crystal device；
Fig. 4 is the flow chart of another embodiment of modulator approach of the application LCOS liquid crystal device；
Fig. 5 is the flow chart of the modulator approach a further embodiment of the application LCOS liquid crystal device；
Fig. 6 is the flow chart of another embodiment of the application LCOS display system.
Specific embodiment
In being described below, for illustration and not for limitation, propose such as specific system structure, interface, technology it The detail of class, so as to provide a thorough understanding of the present application.However, it will be clear to one skilled in the art that there is no these specific The application also may be implemented in the other embodiment of details.In other situations, omit to well-known device, circuit with And the detailed description of method, so as not to obscure the description of the present application with unnecessary details.
Fig. 1 and 2 is please referred to, Fig. 1 is the flow chart of one embodiment of modulator approach of the application LCOS liquid crystal device, Fig. 2 For the structural schematic diagram of one embodiment of the application LCOS display system.To be best understood from the application method, first illustrate the application The basic display principles of LCOS display system applied by method.Such as Fig. 2, LCOS display system include LCOS liquid crystal device 210, The driving circuit 220 and three primary light source 230 of LCOS liquid crystal device are driven, the LCOS display system of the application is that one chip is shown System, i.e. LCOS liquid crystal device 210 are monolithic, which successively enters to LCOS liquid crystal device 210 in timing Red, green, blue three primary colours are penetrated, which can physically be three independent red, green, blue primary light sources, or It is issued for an independent light source and in timing or by generating three kinds of primary lights of red, green, blue, the general three primary colours after lens Light source is LED or semiconductor laser.Specifically, source image frame signal is transported to driving circuit 220, while feeding back to three primary colours Light source 230.Driving circuit 220 receives source image frame signal, and according to the red, green, blue primary lights of pixel each in source image frame Gray value, that is, R value, G value and B value input corresponding driving voltage to LCOS liquid crystal device 210, to modulate LCOS liquid crystal device 210 To the light transmission rate of the red, green, blue primary lights of each pixel, that is, the R value, G value and B value of each pixel of image are modulated, Three primary light source 230 is in timing successively to the incident red, green, blue three primary colours light of LCOS liquid crystal device 210, LCOS liquid crystal device 210 respectively reflect three primary colours light according to the light transmission rate of the red, green, blue primary lights of pixel each after modulation, are formed The display image that source image frame indicates.Wherein, the gray-scale intensity of image is equal to the light intensity and LCOS liquid that three primary light source 230 issues The product of the gray value of brilliant device 210.
In present embodiment, this method comprises:
101: determining LCOS liquid crystal device to the primary colours according to the maximum gradation value of at least one of source image frame primary lights Times increment of the light transmission rate of light.
LCOS liquid crystal device shows the image of different gray values by controlling its light transmission rate, wherein its light transmission rate Relationship between gray value be it is directly proportional, i.e. the light transmission rate of LCOS liquid crystal device is bigger, display gray value It is bigger.According to the relationship between the light transmission rate of LCOS liquid crystal device and the gray value of display, by pixel in source image frame The gray value of red, green, blue primary colours, can directly obtain LCOS liquid crystal device corresponded in the pixel it is required to red, green, blue primary colours The light transmittance of light, the application are also referred to as the required primary lights that the above-mentioned primary lights gray value according in source image frame directly obtains Light transmittance is original light transmittance of the LCOS liquid crystal device to the primary lights.
In present embodiment, when LCOS liquid crystal device is performed image display according to a upper source image frame, next source is obtained The gray value of the red, green, blue primary lights of all pixels point in picture frame, i.e. R value, G value, the B value of all pixels point, and from gained To red, green, blue primary lights gray value in respectively choose obtain the maximum gradation value of red, green, blue primary lights.According to source image frame The maximum gradation value of middle red, green, blue primary lights determines LCOS liquid crystal device to the light transmittances of red, green, blue primary lights respectively Times increment, i.e. raising ratio on the basis of original light transmittance of the LCOS liquid crystal device to red, green, blue primary lights.
It is worth noting that, determining that times increment of the light transmission rate of primary lights should meet the primary lights in source image frame The maximum gradation value such as 255 that maximum gradation value can be shown after improving by this times of increment no more than LCOS liquid crystal device, and LCOS liquid crystal device to times increment of the light transmission rate of primary lights should for the primary lights in a source image frame all pixels Point light transmission rate times increment, with guarantee all pixels point in same source image frame same primary lights gray scale not Become.
102: at least one primary lights of source image frame, according to the LCOS liquid crystal device to the light of the primary lights Times increment of transmitance improves LCOS liquid crystal device to the light transmission rate of the primary lights of source image frame.
After determining LCOS liquid crystal device to times increment of the light transmission rate of primary lights, it may be selected to improve at least one primary colours The light transmission rate of light comes, and the light intensity for the primary light source for improving light transmission rate is combined to realize the adjustment to the gray-scale intensity of image.
For example, the relational graph between the driving voltage and light transmission rate of LCOS liquid crystal device is as shown in figure 3, work as driving voltage For Vth, when that is to say threshold voltage, LCOS liquid crystal device light transmission rate is 0, gray value 0, when driving voltage is Vl, LCOS liquid crystal device light transmission rate is 100%, gray value 255.The driving circuit of LCOS liquid crystal device is according to determining primary colours Times increment of the light transmission rate of light exports corresponding drive voltage signal to LCOS liquid crystal device, to improve LCOS liquid crystal device To the light transmission rate of at least one of red, green, blue three primary colours primary lights.To improve the light transmission rate of LCOS liquid crystal device accurately To corresponding times increment, the precision of the driving voltage of driving circuit is preferably higher than 8, such as 10,12 etc..
103: the corresponding output power for adjusting primary light source corresponding with primary lights each in source image frame, so that each base Each primary lights that color light source issues form display image, and each primary colours in the display image after the LCOS liquid crystal device The gray-scale intensity of light is identical as the gray-scale intensity of each primary lights in the source image frame or is improved with same ratio.
The grayscale that the light intensity issued according to primary light source is multiplied to obtain with the gray value of LCOS liquid crystal device display image is bright The gray value of degree and LCOS liquid crystal device is corresponding with light transmission rate direct proportion, can be obtained the gray-scale intensities of primary colours with it is described LCOS liquid crystal device is to the light transmission rate of the primary lights, the light intensity direct proportionality of the primary light source.And primary light source Output power determine primary light source light intensity.Therefore in LCOS liquid crystal device to the light transmission rate of at least one primary lights according to again Under the premise of increment is adjusted, the output power of corresponding primary lights is adjusted again based on proportional relationship obtained above The gray-scale intensity for obtaining the three primary colours of display image is identical as the gray-scale intensity of three primary colours light in source image frame, or display image Three primary colours gray-scale intensity and source image frame in the gray-scale intensity of three primary colours light improved with same ratio.For example, LCOS liquid crystal Device the light transmission rate of red, green, blue primary lights is respectively increased original MR、MG、MBTimes, it is corresponding by red, green, blue primary lights The output power in source is reduced respectively to the 1/M using output power needed for existing LCOS liquid crystal device modulator approachR、1/MG、1/ MBTimes, that is, it can reach the gray-scale intensity of the three primary colours light in source image frame, or by the output power of red, green, blue primary light source Respectively from using original output power P needed for existing LCOS liquid crystal device modulator approachR、PG、PBIt reduces to PR'、PG'、PB', WhereinAnd the gross output of red, green, blue primary light source is rear constant before adjustment, with reality The gray-scale intensity of the three primary colours now shown is improved compared with the gray-scale intensity of the three primary colours light in source image frame with same ratio, i.e., Realization integrally improves brightness in the case where three primary light source gross output is constant.
Wherein, the adjustment mode of the output power of primary light source can specifically by adjusting primary light source open duration and/ Or intensity is realized.The intensity for adjusting primary light source concretely adjusts the voltage or current value of primary light source.And adjust primary colours Light source opens duration, i.e. the energization duration as adjusted primary light source.
Present embodiment, which uses, adjusts the associativity of the output power of light transmission rate and light source, by improving LCOS liquid crystal Device is to the light transmission rates of at least one of the three primary colours of source image frame primary lights, and the corresponding output work for adjusting the primary light source Rate realizes that the gray-scale intensity of each primary lights in display image is identical as the gray-scale intensity of primary lights each in source image frame or with phase It improves in proportion, according to the relationship between gray-scale intensity and the light transmission rate and light intensity of LCOS liquid crystal device it is found that primary lights are saturating The raising of rate is crossed, the reduction of the light intensity of the primary light source needed for necessarily causing to reach under same gray level brightness, therefore improve the base The light utilization efficiency of color light source, and the raising of primary colours light transmission rate also avoid the excessive invalid of the light of primary light source sending Reflection, further improves the light utilization efficiency of the primary light source.
Referring to Fig. 4, Fig. 4 is the flow chart of another embodiment of modulator approach of the application LCOS liquid crystal device.This reality The mode of applying will be accomplished that the ash of each primary lights in the gray-scale intensity and source image frame of the display image three primary colours obtained after modulation Rank brightness is identical, i.e., under the premise of the gray-scale intensity of guarantee display image and source image frame is constant, according to each primary colours of image Gray value adjusts corresponding primary light source ratio, realizes the dynamic energy-saving of light source, also referred to as hi-bright mode, this method comprises:
401: obtaining the maximum gradation value A of every kind of primary lights in source image framei, wherein i is primary lights mark.
Specifically, the primary lights of picture frame include red primary light, green primary light and blue primary light, wherein the mark of red primary light Knowing is R, and green primary light is identified as G, and blue primary light is identified as B.Therefore it obtains in source image frame in the R value of all pixels point Maximum value be AR, obtaining the maximum value in source image frame in the G value of all pixels point is AG, obtain all pictures in source image frame Maximum value in the B value of vegetarian refreshments is AB。
For example, the driving circuit of LCOS liquid crystal device obtains next image frame, analyze in the picture frame on all pixels point R value, and obtain wherein maximum value be AR, the G value in the picture frame on all pixels point is analyzed, and obtain wherein maximum value and be AG, the B value in the picture frame on all pixels point is analyzed, and obtaining wherein maximum value is AB。
402: a times increment of the LCOS liquid crystal device to the light transmission rate of every kind of primary lights is determined as Mi, wherein 1 < Mi≤ (K/Ai), the maximum gradation value that wherein K can show for the LCOS liquid crystal device.
Present embodiment makees height-regulating processing as optimal enforcement mode, to the light transmission rate of three primary colours, to realize three bases The light efficiency of the light source of color can be improved.Wherein, times increment of light transmission rate is bigger, and the raising degree of the light efficiency of light source will It is bigger.For the maximum ash for avoiding the maximum gradation value of the primary lights after light transmission rate is turned up that from capable of showing beyond LCOS liquid crystal device Angle value K for example 255, the application adjust the principle of the light transmission rate of three primary colours are as follows: LCOS liquid crystal device is saturating to the light of red primary light Cross times increment M of rateRWithout departing from K/AR, times increment M of the LCOS liquid crystal device to the light transmission rate of green primary lightGWithout departing from K/AG, Times increment M of the LCOS liquid crystal device to the light transmission rate of blue primary lightBWithout departing from K/AB。
Such as the embodiment of optimization, determine LCOS liquid crystal device to times increment M of the light transmission rate of red primary lightRFor K/ AR, determine LCOS liquid crystal device to times increment M of the light transmission rate of green primary lightGFor K/AG, determine LCOS liquid crystal device to blue base Times increment M of the light transmission rate of coloured lightBFor K/AB。
403: for every kind of primary lights of source image frame, being penetrated according to light of the LCOS liquid crystal device to every kind of primary lights Times increment M of rateiLCOS is improved to the light transmission rate M of the primary lights of source image framei。
Specifically, according to LCOS liquid crystal device to times increment M of the light transmission rate of red primary lightRImprove LCOS liquid crystal device pair The light transmission rate L of the red primary light of source image frameR.According to LCOS liquid crystal device to the light transmission rate of the green primary light Times increment MGLCOS liquid crystal device is improved to the light transmission rate L of the green primary light of source image frameG.According to the LCOS liquid crystal Times increment M of the device to the light transmission rate of the blue primary lightBLCOS liquid crystal device is improved to the blue primary of source image frame The light transmission rate L of lightB。
As optimization embodiment in, the driving circuit of LCOS liquid crystal device improves driving voltage, by LCOS liquid crystal Device is modulated to original K/A to the light transmission rate of red primary lightRAgain namely LCOS liquid crystal device is to source image frame all pixels The light transmission rate of the red primary light of point is modulated to original K/ARTimes.Similarly, by the LCOS liquid crystal device to green primary light Light transmission rate be modulated to original K/AGTimes, the LCOS liquid crystal device is modulated to originally the light transmission rate of blue primary light K/ABTimes.LCOS liquid crystal device is promoted to maximum value K to the maximum gradation value of three primary colours light after modulating, at this point, three bases It is minimum value that coloured light, which will reach light intensity needed for the gray-scale intensity of three primary colours light in source image frame, that is, is in most power save mode.
404: according to the LCOS liquid crystal device to times increment M of the light transmission rate of every kind of primary lights of source image framei, will Times increment M of the light transmission rateiPrimary lights corresponding to the output power of primary light source be adjusted to 1/MiTimes.
In existing LCOS liquid crystal device modulation system, LCOS liquid crystal device according to the grey value modulation of picture frame go out pair After answering light transmission rate, and the light issued to the three primary light source persistently opened within service time with constant power reflect To image, at this point, the constant power of the primary light source is the original output power of the primary light source, the primary lights in source image frame Gray value be multiplied to obtain the gray-scale intensity of the primary lights of source image frame with the original light intensity of the primary colours.
It is still illustrated with previous example, determines multiplication of the LCOS liquid crystal device to the light transmission rate of red primary light Amount is K/AR, determine that the LCOS liquid crystal device is K/A to times increment of the light transmission rate of green primary lightG, determine the LCOS liquid Brilliant device is K/A to times increment of the light transmission rate of blue primary lightB, according to the pass of primary colours gray-scale intensity and light transmission rate and light intensity System can, to reach the gray-scale intensity of each primary lights of source image frame, can correspond to and adjust the output power of the red primary light source For original AR/ K times, the output power of the green primary light source is adjusted to original AG/ K times, by the blue primary light source Output power is adjusted to original AB/ K times, the light sequential that the three primary light source after adjusting output power issues successively is incident on The display image of the corresponding gray-scale intensity for reaching source image frame three primary colours of gray-scale intensity of three primary colours is obtained in LCOS liquid crystal device. Due to AR、AG、ABCertainly less than or be equal to K, therefore three bases of source image frame have can be realized in the light intensity of three primary colours all relative reductions Color gray-scale intensity, therefore realize energy conservation.Wherein, when primary light source is pulse width (English: Pulse Width Modulation, referred to as: PWM) modulation light source, the duty ratio of the pwm signal of red, green, blue primary light source can be adjusted respectively For original AR/K、AG/K、AB/ K realizes the above-mentioned adjustment to the output power of red, green, blue primary light source.
Present embodiment under the premise of keeping source image frame gray-scale intensity, by by LCOS liquid crystal device to each primary colours Light transmission rate increases separately as original MiTimes, to reduce light intensity needed for three primary light source, therefore realize the dynamic of primary light source Energy conservation, therefore the primary colours kept under source image frame gray-scale intensity by combining the modulation of LCOS liquid crystal device and primary light source to realize Light source energy conservation, improves the light utilization efficiency to primary light source.Moreover, the program improves light transmission rate, i.e., it can reduce light quilt Reflection consumption, further improves the light utilization efficiency of primary light source.
It is the flow chart of the modulator approach a further embodiment of the application LCOS liquid crystal device refering to Fig. 5, Fig. 5.This implementation Mode will be accomplished that the gross output for not changing three primary light source, so that the gray-scale intensity of each primary colours of display image and source The gray-scale intensity of each primary colours of picture frame is compared, and is improved with same ratio, also referred to as hi-bright mode, i.e. total output work of primary light source The whole gray-scale intensity of image is improved in the constant situation of rate by certain ratio, and guarantees the ratio of the gray-scale intensity of its each primary lights Example, that is to say white balance, this method comprises:
501: obtaining the maximum gradation value A of every kind of primary lights in source image framei, wherein i is primary lights mark.
502: a times increment of the LCOS liquid crystal device to the light transmission rate of every kind of primary lights is determined as Mi, wherein 1 < Mi≤ (K/Ai), the maximum gradation value that wherein K can show for the LCOS liquid crystal device.
503: for every kind of primary lights of source image frame, being penetrated according to light of the LCOS liquid crystal device to every kind of primary lights Times increment M of rateiLCOS is improved to the light transmission rate M of the primary lights of source image framei。
Above-mentioned steps 501-503 and the 401-403 in a upper embodiment are similar, and and therefore not to repeat here.
504: according to the LCOS liquid crystal device to times increment M of the light transmission rate of every kind of primary lights of source image framei, will Times increment M of the light transmission rateiPrimary lights corresponding to primary light source output power PiIt is adjusted to Pi', whereinAnd PR'+PG'+PB'=PR+PG+PB。
Present embodiment is constant by the gross output of control three primary light source, and adjusts the output work of each primary light source Rate integrally improves brightness to realize, wherein PiFor the original output power of primary light source.Below to adjust the open-minded of primary light source For time realizes the output power of adjustment primary light source, constant i.e. three primary light source of total service time of three primary light source Gross output is constant, it is assumed that the total time T that three primary light source is openedR+TG+TB=S, TR、TG、TBRespectively red, green, blue primary colours Light source original service time, and the white balance in order to guarantee picture, three primary colours ratio are fixed, i.e. TR:TG:TB=x:y:z. In previous step, times increment M of the LCOS liquid crystal device to three primary colours light transmitanceR, MG, MB, respectively K/AR, K/AG, K/AB, phase The three primary light source service time answered adjusts separately as tR, tG, tB, and tR, tG, tBThe following conditions need to be met:(2)tR+tG+tB=TR+TG+TB.Due to every kind of primary light source output power with Primary light source respective service time is proportional relationship, and the gray-scale intensity for so obtaining three primary colours is respectively KtR, KtG, KtB, Original three primary colours brightness is respectively ARTR, AGTG, ABTB, therefore it is Kt that the gray-scale intensity of three primary colours, which promotes ratio,R/(ARTR)= KtG/(AGTG)=KtB/(ABTB), i.e. the multiple that is promoted of the gray-scale intensity ratio of three primary colours is identical, both ensure that white balance and whole Body improves brightness,
The present embodiment situation constant in the gross output of red primary light source, green primary light source and blue primary light source Under, by increasing separately light transmission rate of the LCOS liquid crystal device to each primary colours for original MiTimes, and adjust three primary light source Respective output power, with realize with same ratio improve red-green-blue gray-scale intensity, therefore by combine LCOS liquid crystal The modulation of device and primary light source realize light source gross output it is constant under the entirety of gray-scale intensity is improved, therefore improve To the light utilization efficiency of primary light source.Moreover, above scheme improves light transmission rate, i.e., can reduce light and be consumed by reflection, more into One step improves the light utilization efficiency of primary light source.
It is understood that above embodiment the light of red, green, blue three primary colours is penetrated and the output power of light source into Gone corresponding adjustment, but in other embodiments, can also the light only to part of kind of primary lights penetrate and light source it is defeated Power is adjusted out.Such as:
Determining LCOS liquid crystal device to times increment M of the light transmission rate of red, green, blue primary lightsR、MG、MBAfterwards, M is obtainedR、 MG、MBIn maximum value Mmax；It is M in source image frame times of incrementmaxPrimary lights, according to the MmaxImprove LCOS liquid crystal device Part is M in source image frame times of incrementmaxPrimary lights light transmission rate.It is specific that three primary colours light is penetrated such as LCOS liquid crystal device Times increment M of rateR, MG, MBRespectively K/AR, K/AG, K/AB, wherein AR>AG>AB, i.e. maximum value MmaxFor MB.Therefore only by LCOS Liquid crystal device rises to original M to the light transmission rate of blue primary light in source image frameBTimes, and red in source image frame, green primary The light transmission rate of light is constant.Also, the output power of blue primary light source only accordingly, is adjusted to original 1/MBTimes, i.e., most By LCOS liquid crystal device obtain display image blue primary light gray-scale intensity and source image frame in blue primary light ash Rank brightness is identical, realizes the energy conservation to blue primary light source.It certainly, may not be only to the maximum primary lights of times increment of light transmission rate Such as above-mentioned adjustment to light transmission rate and output power is carried out, the red primary light in the primary lights example as above of other kinds can also be chosen Perhaps green primary light is carried out such as the above-mentioned adjustment to light transmission rate and output power or selection multiple primary colors light progress therein Such as the above-mentioned adjustment to light transmission rate and output power, it is not limited thereto.
In the another embodiment of the modulator approach of LCOS liquid crystal device, before this method step shown in Fig. 1, also It include: to judge the instruction of user's input for energy conservation instruction or highlighted command.
The corresponding output power for adjusting primary light source corresponding with primary lights each in source image frame, so that each base Each primary lights that color light source issues form display image, and each primary colours in the display image after the LCOS liquid crystal device The step of gray-scale intensity of light is identical as the gray-scale intensity of each primary lights in the source image frame or is improved with same ratio packet It includes:
If the instruction that the user inputs is energy conservation instruction, corresponding adjusting is corresponding with primary lights each in source image frame The output power of primary light source, so that each primary lights that each primary light source issues are formed after the LCOS liquid crystal device Show image, and the gray-scale intensity for showing each primary lights in the gray-scale intensity and the source image frame of each primary lights in image It is identical, enter energy-saving mode at this time.When specifically in the energy-saving mode, the method and step that Fig. 4 can be performed realizes LCOS liquid crystal device The modulation of part.
If the instruction of user's input is highlighted command, corresponding adjusting is corresponding with primary lights each in source image frame The output power of primary light source, so that each primary lights that each primary light source issues are formed after the LCOS liquid crystal device Show image, and the gray-scale intensity for showing each primary lights in the gray-scale intensity and the source image frame of each primary lights in image It is improved with same ratio, enters hi-bright mode at this time.Specifically under hi-bright mode, the method and step that Fig. 5 can be performed is realized The modulation of LCOS liquid crystal device.
Present embodiment realizes the selection and switching of energy-saving mode and hi-bright mode, so that user can be with more flexible benefit Use light source.
It is the structural schematic diagram of another embodiment of the application LCOS display system refering to Fig. 6, Fig. 6.LCOS display system Modulating device 610, LCOS liquid crystal device 620, driving circuit 630 and three primary light source 640 including LCOS liquid crystal device.LCOS The modulating device 610 of liquid crystal device includes determining module 613, improves module 611 and adjustment module 612.
The LCOS display system of the application is one chip display system, i.e., LCOS liquid crystal device 620 is monolithic, three base For color light source 640 successively to the incident red, green, blue three primary colours of LCOS liquid crystal device 620 in timing, which can be with Physically it is three independent red, green, blue primary light sources, is either an independent light source and issues or pass through in timing Three kinds of primary lights of red, green, blue are generated after lens, the general three primary light source is LED or semiconductor laser.Driving circuit 630 control LCOS liquid crystal devices 620 to the light transmission rate of each pixel of source image frame, three primary light source 640 in timing according to It is secondary to the incident red, green, blue three primary colours light of LCOS liquid crystal device 620, LCOS liquid crystal device 620 is according to pixel each after modulation The light transmission rate of red, green, blue primary lights respectively reflects three primary colours, forms the display image that source image frame indicates.Specifically The displaying principle of LCOS liquid crystal device is the prior art, therefore is not repeated.
Specifically, the determining module 613 of the modulating device 610 of LCOS liquid crystal device is used for according at least one of source image frame The maximum gradation value of primary lights determines that LCOS liquid crystal device 620, and will be described to times increment of the light transmission rate of the primary lights Times increment is sent to the raising module 611.
In present embodiment, when LCOS liquid crystal device 620 is performed image display according to a upper source image frame, determining module 613 obtain the gray value of the red, green, blue primary lights of all pixels point in next source image frame, i.e. the R value of all pixels point, G Value, B value, and chosen respectively from obtained red, green, blue primary lights gray value and obtain the maximum gray scale of red, green, blue primary lights Value.Determined LCOS liquid crystal device 620 in each pixel respectively according to the maximum gradation value of red, green, blue primary lights in source image frame Times increment of the point to the light transmittance of red, green, blue primary lights.
It is worth noting that, determining that times increment of the light transmission rate of primary lights should meet the primary lights in source image frame The maximum gradation value such as 255 that maximum gradation value can be shown after improving by this times of increment no more than LCOS liquid crystal device 620, and LCOS liquid crystal device 620 to times increment of the light transmission rate of primary lights should for the primary lights in a source image frame all pictures Times increment of the light transmission rate of vegetarian refreshments, to guarantee the gray scale of the same primary lights of all pixels point in same source image frame It is constant.
At least one primary lights that module 611 is used to be directed to source image frame are improved, it is right according to the LCOS liquid crystal device 620 Times increment of the light transmission rate of the primary lights improves LCOS liquid crystal device 620 and penetrates to the light of the primary lights of source image frame Rate.
Module 611 is improved according to times increment of the light transmission rate of determining primary lights, controls driving circuit 630 to LCOS liquid The brilliant device 620 corresponding drive voltage signals of output, to improve LCOS liquid crystal device 620 in red, green, blue three primary colours at least one The light transmission rate of kind primary lights.To make the light transmission rate of LCOS liquid crystal device 620 accurately be increased to corresponding times increment, driving circuit The precision of 630 driving voltage is preferably higher than 8, such as 10,12 etc..
Output power of the adjustment module 612 for corresponding adjusting primary light source corresponding with primary lights each in source image frame, So that each primary lights that each primary light source issues after the LCOS liquid crystal device, form display image, and the display The gray-scale intensity of each primary lights is identical as the gray-scale intensity of each primary lights in the source image frame or with same ratio in image It improves.Wherein, the adjustment mode of the output power of primary light source specifically can open duration and/or strong by adjusting primary light source Degree is realized.
The light transmission rate of at least one primary lights of LCOS liquid crystal device 620 is carried out according to increment again improving module 611 Under the premise of adjusting, the light of the primary lights is penetrated according to the gray-scale intensity of primary lights and the LCOS liquid crystal device 620 The light intensity direct proportionality of rate, the primary light source, the output power that adjustment module 612 adjusts corresponding primary lights again can obtain Gray-scale intensity to the three primary colours of display image is identical as the gray-scale intensity of three primary colours light in source image frame, or display image The gray-scale intensity of three primary colours light is improved in the gray-scale intensity and source image frame of three primary colours with same ratio.
In the first optimal enforcement example, determining module includes acquiring unit and determination unit.
The acquiring unit is used to obtain the maximum gradation value A of at least one of source image frame primary lightsi, and by the base The maximum gradation value A of coloured lightiBeing sent to determination unit, wherein i is primary lights mark.
Specifically, the primary lights of picture frame include red primary light, green primary light and blue primary light, wherein the mark of red primary light Knowing is R, and green primary light is identified as G, and blue primary light is identified as B.Therefore acquiring unit obtains all pixels point in source image frame R value in maximum value be AR, obtaining the maximum value in source image frame in the G value of all pixels point is AG, obtain in source image frame Maximum value in the B value of all pixels point is AB。
Determination unit is used to a times increment of the LCOS liquid crystal device to the light transmission rate of the primary lights being determined as Mi, wherein 1<Mi≤ (K/Ai), the maximum gradation value that wherein K can show for the LCOS liquid crystal device.
Specifically, LCOS liquid crystal device is determined as M to a times increment for the light transmission rate of red primary lightR, by LCOS liquid crystal device M is determined as to a times increment for the light transmission rate of green primary lightG, multiplication by LCOS liquid crystal device to the light transmission rate of blue primary light Amount is determined as M.
Module is improved to be specifically used for according to LCOS liquid crystal device to times increment M of the light transmission rate of red primary lightRIt improves Light transmission rate L of the LCOS liquid crystal device to the red primary light of source image frameR.According to LCOS liquid crystal device to the green primary Times increment M of the light transmission rate of lightGLCOS liquid crystal device is improved to the light transmission rate L of the green primary light of source image frameG.Root According to the LCOS liquid crystal device to times increment M of the light transmission rate of the blue primary lightBLCOS liquid crystal device is improved to source images The light transmission rate L of the blue primary light of frameB。
Adjustment module is specifically used for according to the LCOS liquid crystal device to the light transmission rate of every kind of primary lights of source image frame Times increment Mi, by times increment M of the light transmission rateiPrimary lights corresponding to the output power of primary light source be adjusted to 1/ MiTimes.
In the second optimal enforcement mode, determining module and raising module such as the first optimal enforcement mode.
Adjustment module is specifically used for according to the LCOS liquid crystal device to the light transmission rate of every kind of primary lights of source image frame Times increment Mi, by times increment M of the light transmission rateiPrimary lights corresponding to primary light source output power PiIt is adjusted to Pi', whereinAnd PR'+PG'+PB'=PR+PG+PB。
In third optimal enforcement mode, determining module is as described in optimal enforcement mode above.
Module is improved to be specifically used for obtaining MR、MG、MBIn maximum value Mmax；It is M in source image frame times of incrementmax's Primary lights, according to the MmaxImproving LCOS liquid crystal device is M in source image frame times of incrementmaxPrimary lights light transmission rate.
Adjustment module is specifically used for according to the Mmax, by times increment M of the light transmission ratemaxPrimary lights corresponding to The output power of primary light source is adjusted to 1/MmaxTimes.
Certainly, only the maximum primary lights of times increment of light transmission rate may not be carried out as above-mentioned to light transmission rate and output work The adjustment of rate, the red primary light or green primary light that can also be chosen in the primary lights example as above of other kinds are carried out as above-mentioned saturating to light The adjustment of rate and output power is crossed, or selection multiple primary colors light therein is carried out as above-mentioned to light transmission rate and output power Adjustment, is not limited thereto.
In yet another embodiment, the modulating device of LCOS liquid crystal device further includes judgment module, for judging that user is defeated The instruction entered is energy conservation instruction or highlighted command.Adjustment module is specifically used for when the instruction of user input being energy conservation instruction When, the corresponding output power for adjusting primary light source corresponding with primary lights each in source image frame, so that each primary light source hair Each primary lights out form display image, and the grayscale for showing each primary lights in image after the LCOS liquid crystal device Brightness is identical as the gray-scale intensity of each primary lights in the source image frame, enters energy-saving mode at this time；When the user inputs Instruction when being highlighted command, the corresponding output power for adjusting primary light source corresponding with primary lights each in source image frame so that Each primary lights that each primary light source issues form display image, and the display image after the LCOS liquid crystal device In the gray-scale intensities of gray-scale intensity and each primary lights in the source image frame of each primary lights improved with same ratio, at this time i.e. into Enter hi-bright mode.
In a particular application, the determining module of the modulating device of above-mentioned LCOS liquid crystal device and raising module can be integrated in It states in driving circuit, adjustment module can be integrated in the control circuit of three primary light source, at this point, LCOS display system such as Fig. 2 institute Show.
The application also provides a kind of modulating device of LCOD liquid crystal device, and the modulating device is as shown in Figure 6 and real above Modulating device described in mode is applied, is not repeated specifically.
It in above scheme, is adjusted using the associativity to light transmission rate and the output power of light source, by improving LCOS liquid Brilliant device is to the light transmission rates of at least one of the three primary colours of source image frame primary lights, and the corresponding output for adjusting the primary light source Power, realize display image in each primary lights gray-scale intensity it is identical as the gray-scale intensity of primary lights each in source image frame or with Same ratio improves, according to the relationship between gray-scale intensity and the light transmission rate and light intensity of LCOS liquid crystal device it is found that primary lights The raising of transmitance, the reduction of the light intensity of the primary light source needed for necessarily causing to reach under same gray level brightness, therefore improve this The light utilization efficiency of primary light source, and the raising of primary colours light transmission rate, the light for also reducing primary light source sending, which is reflected, to disappear Consumption, further improves the light utilization efficiency of the primary light source.
In several embodiments provided herein, it should be understood that disclosed system, device and method can To realize by another way.For example, device embodiments described above are only schematical, for example, the mould The division of block or unit, only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple Unit or assembly can be combined or can be integrated into another system, or some features can be ignored or not executed.It is another Point, shown or discussed mutual coupling, direct-coupling or communication connection can be through some interfaces, device or The indirect coupling or communication connection of unit can be electrical property, mechanical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple In network unit.Some or all of unit therein can be selected to realize present embodiment scheme according to the actual needs Purpose.
In addition, each functional unit in each embodiment of the application can integrate in one processing unit, it can also To be that each unit physically exists alone, can also be integrated in one unit with two or more units.It is above-mentioned integrated Unit both can take the form of hardware realization, can also realize in the form of software functional units.
If the integrated unit is realized in the form of SFU software functional unit and sells or use as independent product When, it can store in a computer readable storage medium.Based on this understanding, the technical solution of the application is substantially The all or part of the part that contributes to existing technology or the technical solution can be in the form of software products in other words It embodies, which is stored in a storage medium, including some instructions are used so that a computer It is each that equipment (can be personal computer, server or the network equipment etc.) or processor (processor) execute the application The all or part of the steps of embodiment the method.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic or disk Etc. the various media that can store program code.

Claims (13)

1. a kind of modulator approach of the attached silicon LCOS liquid crystal device of liquid crystal characterized by comprising
Determine LCOS liquid crystal device to the light of the primary lights according to the maximum gradation value of at least one of source image frame primary lights Times increment of transmitance；
For at least one primary lights of source image frame, according to the LCOS liquid crystal device to the light transmission rates of the primary lights Times increment improves LCOS liquid crystal device to the light transmission rate of the primary lights of source image frame；
The corresponding output power for adjusting primary light source corresponding with primary lights each in source image frame, so that each primary light source hair Each primary lights out form display image, and the grayscale for showing each primary lights in image after the LCOS liquid crystal device Brightness is identical as the gray-scale intensity of each primary lights in the source image frame or is improved with same ratio；
Wherein, the primary lights of the source image frame include red primary light, green primary light and blue primary light；
At least one primary lights for source image frame are penetrated according to light of the LCOS liquid crystal device to the primary lights Times increment of rate improves LCOS and specifically includes to the light transmission rate of the primary lights of source image frame:
According to the LCOS liquid crystal device to times increment M of the light transmission rate of the red primary lightRLCOS liquid crystal device is improved to source The light transmission rate L of the red primary light of picture frameR；
According to the LCOS liquid crystal device to times increment M of the light transmission rate of the green primary lightGLCOS liquid crystal device is improved to source The light transmission rate L of the green primary light of picture frameG；
According to the LCOS liquid crystal device to times increment M of the light transmission rate of the blue primary lightBLCOS liquid crystal device is improved to source The light transmission rate L of the blue primary light of picture frameB；
Alternatively, at least one primary lights for source image frame, according to the LCOS liquid crystal device to the primary lights Times increment of light transmission rate improves LCOS liquid crystal device and specifically includes to the light transmission rate of the primary lights of source image frame:
Obtain MR、MG、MBIn maximum value Mmax, wherein MRIt is the LCOS liquid crystal device to the light transmission rate of the red primary light Times increment, MGIt is the LCOS liquid crystal device to times increment of the light transmission rate of the green primary light, MBFor the LCOS liquid crystal Times increment of the device to the light transmission rate of the blue primary light；
It is M in source image frame times of incrementmaxPrimary lights, according to the MmaxLCOS liquid crystal device is improved in source image frame Times increment is MmaxPrimary lights light transmission rate.
2. the method according to claim 1, wherein it is described according at least one of source image frame primary lights most High-gray level value determines that LCOS liquid crystal device includes: to the multiplication measurer body of the light transmission rate of the primary lights
Obtain the maximum gradation value A of at least one of source image frame primary lightsi, wherein i is primary lights mark；
A times increment of the LCOS liquid crystal device to the light transmission rate of the primary lights is determined as Mi, wherein 1 < Mi≤ (K/Ai), The maximum gradation value that middle K can show for the LCOS liquid crystal device.
3. the method according to claim 1, wherein the corresponding adjusting is corresponding with primary lights each in source image frame Primary light source output power so that each primary lights that each primary light source issues are after the LCOS liquid crystal device, shape At display image, and the grayscale for showing the gray-scale intensity and each primary lights in the source image frame of each primary lights in image is bright Spend identical specifically include:
According to the LCOS liquid crystal device to times increment M of the light transmission rate of every kind of primary lights of source image framei, the light is saturating Cross times increment M of rateiPrimary lights corresponding to the output power of primary light source be adjusted to 1/MiTimes.
4. the method according to claim 1, wherein the corresponding adjusting is corresponding with primary lights each in source image frame Primary light source output power so that each primary lights that each primary light source issues are after the LCOS liquid crystal device, shape At display image, and the grayscale for showing the gray-scale intensity and each primary lights in the source image frame of each primary lights in image is bright Degree is specifically included with same ratio raising:
According to the LCOS liquid crystal device to times increment M of the light transmission rate of every kind of primary lights of source image framei, the light is saturating Cross times increment M of rateiPrimary lights corresponding to primary light source output power PiIt is adjusted to P 'i, whereinAnd P 'R+P′G+P′B=PR+PG+PB。
5. method according to claim 1 to 4, which is characterized in that the output power of the primary light source Adjustment specifically opens duration and/or intensity realization by the adjusting primary light source.
6. the method according to claim 1, wherein further include:
Judge the instruction of user's input for energy conservation instruction or highlighted command；
The corresponding output power for adjusting primary light source corresponding with primary lights each in source image frame, so that each primary lights Each primary lights that source issues form display image, and each primary lights in the display image after the LCOS liquid crystal device Gray-scale intensity is identical as the gray-scale intensity of each primary lights in the source image frame or is specifically included with same ratio raising:
If the instruction of user's input is energy conservation instruction, corresponding to adjust primary colours corresponding with primary lights each in source image frame The output power of light source, so that each primary lights that each primary light source issues form display after the LCOS liquid crystal device Image, and the gray-scale intensity phase for showing the gray-scale intensity and each primary lights in the source image frame of each primary lights in image Together；
If the instruction of user's input is highlighted command, corresponding to adjust primary colours corresponding with primary lights each in source image frame The output power of light source, so that each primary lights that each primary light source issues form display after the LCOS liquid crystal device Image, and it is described display image in each primary lights gray-scale intensity and each primary lights in the source image frame gray-scale intensity with phase It improves in proportion.
7. a kind of modulating device of LCOS liquid crystal device, which is characterized in that including determining module, improve module, adjustment module；
The determining module is used to determine LCOS liquid crystal device according to the maximum gradation value of at least one of source image frame primary lights The raising module is sent to times increment of the light transmission rate of the primary lights, and by described times of increment；
At least one primary lights for improving module and being used to be directed to source image frame, according to the LCOS liquid crystal device to the base Times increment of the light transmission rate of coloured light improves LCOS liquid crystal device to the light transmission rate of the primary lights of source image frame；
Output power of the adjustment module for corresponding adjusting primary light source corresponding with primary lights each in source image frame, so that Each primary lights that each primary light source issues form display image, and the display image after the LCOS liquid crystal device In each primary lights gray-scale intensity it is identical as the gray-scale intensity of each primary lights in the source image frame or improved with same ratio；
Wherein, the primary lights of the source image frame include red primary light, green primary light and blue primary light；
The raising module is specifically used for:
According to the LCOS liquid crystal device to times increment M of the light transmission rate of the red primary lightRLCOS liquid crystal device is improved to source The light transmission rate L of the red primary light of picture frameR；
According to the LCOS liquid crystal device to times increment M of the light transmission rate of the green primary lightGLCOS liquid crystal device is improved to source The light transmission rate L of the green primary light of picture frameG；
According to the LCOS liquid crystal device to times increment M of the light transmission rate of the blue primary lightBLCOS liquid crystal device is improved to source The light transmission rate L of the blue primary light of picture frameB；
Alternatively, the raising module is specifically used for:
Obtain MR、MG、MBIn maximum value Mmax, wherein MRIt is the LCOS liquid crystal device to the light transmission rate of the red primary light Times increment, MGIt is the LCOS liquid crystal device to times increment of the light transmission rate of the green primary light, MBFor the LCOS liquid crystal Times increment of the device to the light transmission rate of the blue primary light；
It is M in source image frame times of incrementmaxPrimary lights, according to the MmaxLCOS liquid crystal device is improved in source image frame Times increment is MmaxPrimary lights light transmission rate.
8. device according to claim 7, which is characterized in that the determining module includes acquiring unit and determination unit；
The acquiring unit is used to obtain the maximum gradation value A of at least one of source image frame primary lightsi, and by the primary lights Maximum gradation value AiIt is sent to the determination unit, wherein i is primary lights mark；
The determination unit is used to a times increment of the LCOS liquid crystal device to the light transmission rate of the primary lights being determined as Mi, wherein 1 <Mi≤ (K/Ai), the maximum gradation value that wherein K can show for the LCOS liquid crystal device.
9. device according to claim 7, which is characterized in that the adjustment module is specifically used for according to the LCOS liquid crystal Times increment M of the device to the light transmission rate of every kind of primary lights of source image framei, by times increment M of the light transmission rateiPrimary colours The output power of primary light source corresponding to light is adjusted to 1/MiTimes.
10. device according to claim 7, which is characterized in that the adjustment module is specifically used for according to the LCOS liquid Times increment M of the brilliant device to the light transmission rate of every kind of primary lights of source image framei, by times increment M of the light transmission rateiBase The output power P of primary light source corresponding to coloured lightiIt is adjusted to P 'i, whereinAnd P 'R+ P′G+P′B=PR+PG+PB。
11. device according to any one of claims 7 to 10, which is characterized in that the output power of the primary light source Adjustment specifically by adjust the primary light source open duration and/or intensity is realized.
12. device according to claim 7, which is characterized in that further include judgment module；
The judgment module is used to judge that the instruction of user's input to instruct or highlighted command for energy conservation, and judging result is sent To the adjustment module；
The adjustment module is specifically used for:
It is corresponding to adjust primary lights corresponding with primary lights each in source image frame when the instruction of user input is energy conservation instruction The output power in source, so that each primary lights that each primary light source issues after the LCOS liquid crystal device, form display figure Picture, and the gray-scale intensity for showing each primary lights in image is identical as the gray-scale intensity of each primary lights in the source image frame；
It is corresponding to adjust primary lights corresponding with primary lights each in source image frame when the instruction of user input is highlighted command The output power in source, so that each primary lights that each primary light source issues after the LCOS liquid crystal device, form display figure Picture, and it is described display image in each primary lights gray-scale intensity with the gray-scale intensity of each primary lights in the source image frame with identical Ratio improves.
13. a kind of LCOS display system, which is characterized in that including LCOS liquid crystal device, for driving the LCOS liquid crystal device Driving circuit, red primary light source, green primary light source, blue primary light source, the red primary light source, green primary light source, blue primary The incident LCOS liquid crystal device is modulated to form display image the light of light source respectively；
Wherein, the LCOS display system further includes the described in any item modulating devices of claim 7-12.
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