CN107591119A - A kind of improved display subfield scanning Grey imaging method and device - Google Patents
A kind of improved display subfield scanning Grey imaging method and device Download PDFInfo
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Abstract
The invention discloses a kind of Grey imaging method of improved display, the binary system pixel gradation data for having N number of bit in frame memory is split as N number of bit plane by bit, and N number of bit plane is transferred to display pannel in a specific way and forms pixel grey scale；Pixel grey scale data are transmitted in units of bit plane, the process that continuously transmits of one complete bit plane forms an independent subfield, each subfield has regular time length, and the pixel grey scale data being transferred on display pannel are updated immediately to the luminosity of pixel.The invention also discloses the device for realizing above-mentioned Grey imaging method.The present invention is by using specific subfield transmission means, greatly improve the efficiency of transmission of display, especially improve the display performance under high refreshing frequency, and under the conditions of the external hardware maintained like with prior art, only by changing scanning algorithm with regard to the scan efficiency of display can be effectively improved, cost of implementation is reduced.
Description
Technical field
The present invention relates to the Grey imaging method and dress of the technical field of flat-panel monitor, more particularly to a kind of display
Put.
Background technology
The Grey imaging method and apparatus of existing display generally follows the biography from left to right, from top to bottom of pixel data
Defeated order, the operation order of the scanning electron rifle in the compatible traditional CRT monitor of this mode, simple to operate, it shows
The method for providing gray scale of device pixel is mostly analog-driven, the brightness of pixel and the output voltage of pixel or current in proportion.Simulation
Compatibility CRT scan mode is driven, but is constantly lifted with the resolution ratio and gray scale of display, to required for analog-driven
Analog picture signal transmission speed and digital and analogue signals conversion speed and precision be proposed challenge.Driven using numeral
The dynamic transmission speed and the renewal speed and precision of pixel output voltage or electric current that can more preferably lift picture signal.Traditional
Digital drive uses subfield scanning method, but subfield scanning is less efficient, a large amount of stand-by period be present, it is more difficult to applied to higher
Resolution ratio and Geng Gao refresh the display of frame per second.
Therefore, those skilled in the art is directed to developing a kind of more effectively Grey imaging method of display and dress
Put, the scanning of existing subfield is improved, using interframe integration program, can further improve resolution ratio, the frame per second of display
And number of greyscale levels.
The content of the invention
In view of the drawbacks described above of prior art, the technical problems to be solved by the invention be how subfield scanning base
On plinth the scan efficiency of display, including display resolution, frame per second and number of greyscale levels are effectively improved by lifting scanning algorithm
Etc. parameter.In view of human eye can be equivalent to a kind of low pass filter, when the refreshing frame per second of display brings up to certain to a certain degree,
Human eye, which can not have been perceived, more interframe renewal details, and with the lifting of frame per second, resolution ratio of the human eye for brightness
Power is begun to decline, and can only perceive the obvious part of grey scale change, can not discover the details of lower gray scale, therefore when frame per second enters one
During step lifting, can utilize frame-to-frame correlation, the scanning of high frame per second can be used for high-order gray scale, and can be with for low level gray scale
Reduce frame per second scanning.
To achieve the above object, it is transmitted after display data being divided into subfield, it is specifically, provided by the invention
Display Grey imaging method, including the binary system pixel gradation data for having N number of bit in frame memory is pressed into bit
N number of bit plane is split as, and N number of bit plane is transferred to display pannel in a specific way and forms pixel grey scale
Process, institute's bit planes be pixel grey scale data in have identical weights set of data bits into data acquisition system, the N be more than
1 integer, the ad hoc fashion meet following condition：(1) the pixel grey scale data are transmitted in units of bit plane, and one
The process that continuously transmits of individual complete bit plane forms an independent subfield；(2) each subfield has regular time length；
(3) the pixel grey scale data being transferred on display pannel are updated immediately to the luminosity of pixel, so that pixel
Luminosity is directly proportional to the fluorescent lifetime of pixel；(4) luminosity of the pixel in F frame times is equal to the pixel in the F
Average luminescence brightness in frame, F are to be more than but be not equal to 1 integer；(5) subfield of the bit plane of high position data is in adjacent G frames
In occur G times, the subfield of the bit plane of low data at most only occurs G-1 times in adjacent G frames and its hair in the subfield
Between light time or luminosity is G/G ' times of high position data bit plane, and G ' is occurrence number, and G is to be more than but be not equal to 1 integer；
The high position data comprises at least the highest order data of the binary system pixel gradation data, and the low data comprises at least institute
State the lowest order digit evidence of binary system pixel gradation data；(6) in F frames, the order of subfield can be with random arrangement, but identical bits are put down
The subfield in face can not continuously occur；(7) the frame refreshing frequency of display is not less than 60Hz.
Further, if bit plane is 1 bit, pixel light emission when pixel grey scale data are logic 1 (or 0), pixel
The pixel does not light when gradation data is logical zero (or 1)；If bit plane is more than 1 bit, pixel light emission brightness is more than with described
The pixel grey scale data of 1 bit plane are directly proportional.
Further, transient state brightness value of the pixel when lighting keeps constant in subfield, the transient state brightness value
It is set by the user and is together decided on weights amplitude, the user is set as the highest goal that user wishes to reach and can set
Brightness, if bit plane is 1 bit, the pixel light emission reaches when the weights amplitude by pixel grey scale data is logic 1 (or 0)
The brightness value arrived, if bit plane is more than 1 bit, the weights amplitude is the pixel brightness value directly proportional to grey scale pixel value.
Further, the specific transmission mode also includes following condition：Institute's bit planes can repeat to pass in F frames
Defeated, the quantity of subfield corresponding to secondary high position data bit plane is 2 times of the quantity of subfield corresponding to time low a data bit plane,
Especially when the quantity of subfield corresponding to secondary high position data bit plane is 1, then fluorescent lifetime of the pixel in the subfield is secondary
2 times of the pixel light emission time of subfield corresponding to low data bit plane.
Further, the specific transmission mode also includes following condition：To particular subfield in the transmitting procedure of subfield
Transmission data be zeroed out, so as to adjust fluorescent lifetime of the pixel in the subfield, time high position data correspond to subfield and secondary
The ratio that low data corresponds to the pixel light emission time of subfield is 2:1 or close to 2:1.
Further, the specific transmission mode also includes following condition：N number of bit plane combines in different subfields
The possibility for forming fluorescent lifetime has 2NIt is individual or close to 2NIt is individual, it is described to be close to 2N+/- 20%.
In addition, present invention also offers a kind of Grey imaging device of display, including frame memory and display driving
Circuit, the frame memory are static memory or dynamic memory；What is stored in the frame memory has N number of bit
Binary system pixel gradation data is split as N number of bit plane by bit, and the display driver circuit is by N number of bit plane with spy
Determine mode to be transferred to display pannel and form pixel grey scale, institute's bit planes are to have identical weights in pixel grey scale data
Set of data bits into data acquisition system, the N is integer more than 1, and the ad hoc fashion meets following condition：(1) pixel
Gradation data is transmitted in units of bit plane, and the process that continuously transmits of a complete bit plane forms an independent son
；(2) each subfield has regular time length；(3) the pixel grey scale data on display pannel are transferred to pixel
Luminosity is updated immediately, so that the luminosity of pixel is directly proportional to the fluorescent lifetime of pixel；(4) pixel is in F frames
Luminosity in time is equal to average luminescence brightness of the pixel in the F frames, and F is to be more than but be not equal to 1 integer；
(5) subfield of the bit plane of high position data occurs G times in adjacent G frames, and the subfield of the bit plane of low data is in adjacent G frames
At most only occur G-1 time and its fluorescent lifetime or luminosity in the subfield for high position data bit plane G/G ' again (G '
For occurrence number), G is to be more than but be not equal to 1 integer；The high position data has comprised at least the binary system pixel grey
According to highest order data, the low data comprised at least the lowest order digit evidence of the binary system pixel gradation data；(6) exist
In F frames, the order of subfield can be with random arrangement, but the subfield of identical bit plane can not continuously occur；(7) frame refreshing of display
Frequency is not less than 60Hz.Time schedule controller is contained in the display driver circuit, for completing the transmission of the ad hoc fashion.
Further, the display is a kind of display with non-crystalline silicon, polysilicon or monocrystalline silicon substrate, the base
Pixel-driving circuit and luminescent device are integrated with simultaneously on plate, the luminescent device is a kind of device that can actively light or one kind
Can reflected light device, the device that can actively light is organic electroluminescence device or inorganic semiconductor luminescent device, institute
State can the device of reflected light be liquid crystal device or DMD or micro mechanical device, the pixel-driving circuit is used to produce
Curtage required for luminescent device.
Further, there are the display data to shift input functional module, and data shift input functional module by picture
Plain gradation data serial shift input, it is 1 that the data bit width of the displacement input, which is more than or equal to, and input interface is logic electricity
Straight cut or low-voltage differential interface.
Further, the display has row shift function module and row Protection Counter Functions module, the row shift function
The pixel data that module inputs display driver circuit transmits the particular row to display panel successively, for completing the string of subfield
Row displacement input, the row Protection Counter Functions module are used to quickly reset particular row, effectively luminous for adjusting pixel in subfield
Time.
The Grey imaging method and apparatus of display of the present invention, the efficiency of transmission of display is greatly improved, especially
It is to improve the display performance under high refreshing frequency, improves display resolution, refreshes frame per second and number of greyscale levels.Meanwhile
Under the conditions of the external hardware maintained like with prior art, only by changing scanning algorithm with regard to the scanning of display can be effectively improved
Efficiency, reduce cost of implementation.
Design, concrete structure and the caused technique effect of the present invention are described further below with reference to accompanying drawing, with
It is fully understood from the purpose of the present invention, feature and effect.
Brief description of the drawings
Fig. 1 is a preferred embodiment of storage mode of the image of the present invention in frame memory；
Fig. 2 is a preferred embodiment of the subfield scanning sequency of the frame image data transmission of the present invention；
Fig. 3 is another preferred embodiment of the subfield scanning sequency of frame image data transmission of the present invention；
Fig. 4 is an a kind of preferred embodiment of the Grey imaging device of display of the present invention；
Fig. 5 is a kind of another preferred embodiment of the Grey imaging device of display of the present invention；
Fig. 6 be the present invention a kind of display Grey imaging device in display a preferred embodiment.
Embodiment
Multiple preferred embodiments of the present invention are introduced below with reference to Figure of description, make its technology contents more clear and just
In understanding.The present invention can be emerged from by many various forms of embodiments, and protection scope of the present invention not only limits
The embodiment that Yu Wenzhong is mentioned.
In the accompanying drawings, structure identical part is represented with same numbers label, everywhere the similar component of structure or function with
Like numeral label represents.The size and thickness of each component shown in the drawings arbitrarily show that the present invention does not limit
The size and thickness of each component.In order that diagram is apparent, the appropriate thickness for exaggerating part in some places in accompanying drawing.
It set forth below first embodiment：
The present embodiment illustrates a kind of Grey imaging method of display：
First, the binary system pixel gradation data for having N number of bit in frame memory is split as N number of position by bit
Plane, N are the integer more than 1, as shown in figure 1, for that comprising the two field picture that pixel data is N positions, can be torn open according to bit
It is divided into N number of bit plane, each bit plane is by having the data acquisition system that forms of identical weights position in pixel grey scale data, one
In individual preference, each data in data acquisition system are 1, in another preference, every number in data acquisition system
According to being all T bit, T is more than 1 and is less than or equal to N.
Then, N number of bit plane is transferred to display pannel in a specific way, and forms pixel grey scale.Ad hoc fashion expires
It is enough lower condition：(1) pixel grey scale data are transmitted in units of bit plane, and complete bit plane continuously transmitted
Journey forms an independent subfield；(2) each subfield has regular time length；(3) picture being transferred on display pannel
Plain gradation data is updated immediately to the luminosity of pixel so that the luminosity of pixel and the fluorescent lifetime of pixel into
Direct ratio；(4) luminosity of the pixel in F frame times is equal to average luminescence brightness of the pixel in F frames, and F is is more than but not
Integer equal to 1；(5) subfield of high position data bit plane occurs G times in adjacent G frames, and the subfield of low data bit plane exists
At most only occur G-1 times in adjacent G frames and its fluorescent lifetime or luminosity in the subfield is high position data bit plane
G/G ' times (G ' is occurrence number), G are to be more than but be not equal to 1 integer；Therefore, the gray scale that high position data bit plane is formed is by height
Position data correspond to the luminosity of subfield at it and determined, what the gray scale that low data bit plane is formed was occurred by low data at it
Mean flow rate in frame determines；High position data has comprised at least the highest order data of binary system pixel gradation data, low bit number
According to the lowest order digit evidence including at least binary system pixel gradation data；(6) in F frames, the order of subfield can with random arrangement,
But the subfield of identical bit plane can not continuously occur；(7) the frame refreshing frequency of display is not less than 60Hz.
It set forth below second embodiment：
It is essentially identical that this example grants embodiment one, is particular in that：
Further, if bit plane is 1 bit, pixel light emission when pixel grey scale data are logic 1 (or 0), pixel
The pixel does not light when gradation data is logical zero (or 1)；If bit plane is more than 1 bit, pixel light emission brightness is with being more than 1
The pixel grey scale data of bit plane are directly proportional.
Further, transient state brightness value of the pixel when lighting keeps constant in subfield, and transient state brightness value is set by user
Fixed and weights amplitude together decides on, and user is set as the highest goal brightness that user wishes to reach and can set, if position is put down
When face is 1 bit, the pixel light emission reaches when weights amplitude by pixel grey scale data is logic 1 (or 0) brightness value, if position
When plane is more than 1 bit, weights amplitude is the pixel brightness value directly proportional to grey scale pixel value.
Further, specific transmission mode also includes following condition：Institute's bit planes can repeat to transmit in F frames, secondary
The quantity of subfield corresponding to high position data bit plane is 2 times of the quantity of subfield corresponding to time low a data bit plane, especially
It is that then fluorescent lifetime of the pixel in the subfield is time low level when the quantity of subfield corresponding to secondary high position data bit plane is 1
2 times of the pixel light emission time of subfield corresponding to data bit plane.
Further, specific transmission mode also includes following condition：To the biography of particular subfield in the transmitting procedure of subfield
Transmission of data is zeroed out, and so as to adjust fluorescent lifetime of the pixel in the subfield, time high position data is corresponded to subfield and time low level
The ratio that data correspond to the pixel light emission time of subfield is 2:1 or close to 2:1.
Further, specific transmission mode also includes following condition：It is luminous that N number of bit plane combines formation in different subfields
The possibility of time has 2NIt is individual or close to 2NIt is individual, it is close to 2N+/- 20%.
As the preference of a data transfer, as shown in Fig. 2 taking F=2.By taking BX-Y as an example, X represents the position of bit plane
Number, Y represent T frames when being 1, Y represents T+1 frames when being 2.When numeral in bracket is actually active luminous in the subfield
Between account for time of whole subfield, for example, 1/2 represents 1/2 that actually active fluorescent lifetime is the whole subfield time.Shadow representation should
Subfield has been cancelled.
For traditional scanning algorithm, 8 bit planes, for bit 7~4, secondary height can be divided into by possessing the picture frame of 8 data
The quantity of the subfield of position data bit plane is 2 times of the quantity of the subfield of time low data bit plane, for bit 3~0, each
Data bit plane only has 1 subfield, and fluorescent lifetime length of the secondary high position data bit plane in a subfield is time lower-order digit
According to 2 times of fluorescent lifetime length of the bit plane in a subfield.Therefore, a two field picture is divided into 19 subfields, two continuous frames tool
There are 38 subfields, T frame scans are identical with T+1 frame scans.
Scanned for subfield of the present invention, 8 bit planes can be divided into by possessing the picture frame of 8 data, secondary for bit 7~4
The quantity of the subfield of high position data bit plane is 2 times of the quantity of the subfield of time low data bit plane, for bit 3~0, often
Individual data bit plane only has 1 subfield, in T frames, fluorescent lifetime length of the secondary high position data bit plane in a subfield
Spend the fluorescent lifetime length for secondary low data bit plane in a subfield 2 times, in T+1 frames, without bit 3~
0 subfield.Therefore, two continuous frames have 34 subfields, within the same time, reduce stand-by period, efficiency of transmission and hair
Light efficiency is improved.
Further, can be further randomized for the order of subfield scanning, by the subfield of T frames and T+1 frames
Subfield carry out random arrangement so that the subfield of same bit bit plane discontinuously repeats, and by the bit 3 of T frames
The subfield random distribution of~0 bit plane is into T, T+1 frame.Further, frame per second will be refreshed and brings up to 90Hz, eyes will be unable to
The difference of T frames and T+1 frames is told, can not also find flicker.
As the preference of another data transfer, as shown in figure 3, taking F=4.By taking BX-Y as an example, X represents bit plane
Digit, Y represent T frames when being 1, Y represents T+1 frames when being 2, Y represents T+2 frames when being 3, Y represents T+3 frames when being 4.Include
Numeral in number is the time that actually active fluorescent lifetime accounts for whole subfield in the subfield, for example, 1/2 represents actually active
Fluorescent lifetime is the 1/2 of whole subfield time.The shadow representation subfield has been cancelled.
For traditional scanning algorithm, 8 bit planes, for bit 7~4, secondary height can be divided into by possessing the picture frame of 8 data
The quantity of the subfield of position data bit plane is 2 times of the quantity of the subfield of time low data bit plane, for bit 3~0, each
Data bit plane only has 1 subfield, and fluorescent lifetime length of the secondary high position data bit plane in a subfield is time lower-order digit
According to 2 times of fluorescent lifetime length of the bit plane in a subfield.Therefore, a two field picture is divided into 12 subfields, continuous four frames tool
There are 48 subfields, T, T+1, T+2, T+3 frame scan are identical.
Scanned for subfield of the present invention, 8 bit planes can be divided into by possessing the picture frame of 8 data, secondary for bit 7~4
The quantity of the subfield of high position data bit plane is time 2 times of (wherein, T frames and T of the quantity of the subfield of low data bit plane
+ 3 frames do not have the subfield of bit 4), for bit 3~0, in T frames, the only subfield with bit 3, and fluorescent lifetime is
One subfield, the subfield without bit 2~0, in T+1 frames and T+2 frames, the subfield without bit 3~0, in T+3 frames
In, for the subfield of bit 2~0, fluorescent lifetime length of the secondary high position data bit plane in a subfield is time low data
2 times of fluorescent lifetime length of the bit plane in a subfield.Therefore, continuous four frame has 34 subfields, in the same time
It is interior, reduce the stand-by period, efficiency of transmission and luminous efficiency are improved.
Further, can be further randomized for the order of subfield scanning, by the son of T, T+1, T+2, T+3 frame
Carrying out random arrangement so that the subfield of same bit bit plane discontinuously repeats, and by the bit plane of bit 3~0
Subfield random distribution into T, T+1, T+2, T+3 frame.Further, frame per second will be refreshed and brings up to 120Hz, eyes will be unable to
The difference of T, T+1, T+2, T+3 frame is told, can not also find flicker.
For above preference, it is possible to further change F under the conditions of first embodiment and the present embodiment aforementioned constraint
Value, effective fluorescent lifetime, subfield number or subfield scanning sequency of the pixel in subfield, obtain similar results, its implementation result
Do not influence human eye to perceive display, the present embodiment not limit one by one.
It set forth below 3rd embodiment：
The present embodiment illustrates a kind of Grey imaging device of display, and Fig. 4 gives a preference, and device contains frame
Memory 103 and display driver circuit 102, wherein, display driver circuit 102 can be stored and read out in frame memory 103
Content.It is a computer platform that can produce vision signal that platform 100, which occurs, for image, and vision signal is transferred to display and driven
In dynamic circuit 102, vision signal is stored in frame memory 103 by display driver circuit 102, and frame memory 103 is static storage
Device or dynamic memory, display driver circuit 102 store the binary system pixel with N number of bit into frame memory 103
Gradation data split by bit after N number of bit plane, and N number of bit plane read from frame storage 103 and in a specific way
It is transferred to display pannel 104 and forms pixel grey scale, bit plane is the data bit for having in pixel grey scale data identical weights
The data acquisition system of composition, N are the integer more than 1, and ad hoc fashion meets following condition：(1) pixel grey scale data using bit plane as
Unit is transmitted, and the process that continuously transmits of a complete bit plane forms an independent subfield；(2) each subfield has
Regular time length；(3) the pixel grey scale data being transferred on display pannel are carried out immediately more to the luminosity of pixel
Newly, so that the luminosity of pixel is directly proportional to the fluorescent lifetime of pixel；(4) luminosity of pixel in F frame times etc.
In average luminescence brightness of the pixel in F frames, F is to be more than but be not equal to 1 integer；(5) subfield of high position data bit plane
Occur G times in adjacent G frames, the subfield of low data bit plane at most only occurs G-1 times in adjacent G frames and it is in the subfield
In fluorescent lifetime or G/G ' that luminosity is high position data bit plane times (G ' be occurrence number), G is is more than but is not equal to 1
Integer；Also, the gray scale that high position data bit plane is formed is determined by luminosity of the high position data in its corresponding subfield, low level
The gray scale that data bit plane is formed is determined by mean flow rate of the low data in its frame occurred；High position data comprises at least
The highest order data of binary system pixel gradation data, low bit data have comprised at least the lowest order of binary system pixel gradation data
Data；(6) in F frames, the order of subfield can be with random arrangement, but the subfield of identical bit plane can not continuously occur；(7) show
The frame refreshing frequency of device is not less than 60Hz.Time schedule controller 105 is contained in display driver circuit, for completing ad hoc fashion
Transmission.Further, dynamic memory is that single times of speed synchronous DRAM or Double Data Rate synchronous dynamic random are deposited
Reservoir, the memory that static memory will not disappear and need not refresh for data after write-in.
Fig. 5 gives another preference, and device contains frame memory 103 and display driver circuit 102, frame memory
103, which are integrated in image, occurs in platform 100, and it is a computer platform that can produce vision signal that platform 100, which occurs, for image,
Vision signal is transferred in display driver circuit 102.Frame memory 103 is static memory or dynamic memory, and it passes through
Image generation platform 100 stores N number of position after the binary system pixel gradation data with N number of bit is split by bit and put down
N number of bit plane is transferred to display pannel 104 and forms pixel grey scale by face, display driver circuit 102 in a specific way, and position is put down
Face be have in pixel grey scale data the set of data bits of identical weights into data acquisition system, N is integer more than 1, ad hoc fashion
Meet following condition：(1) pixel grey scale data are transmitted in units of bit plane, and complete bit plane continuously transmits
Process forms an independent subfield；(2) each subfield has regular time length；(3) it is transferred on display pannel
Pixel grey scale data are updated immediately to the luminosity of pixel, so that the luminosity of pixel and the fluorescent lifetime of pixel
It is directly proportional；(4) luminosity of the pixel in F frame times is equal to average luminescence brightness of the pixel in F frames, F to be more than but
Integer not equal to 1；(5) subfield of high position data bit plane occurs G times in adjacent G frames, the subfield of low data bit plane
At most only occur G-1 times in adjacent G frames and its fluorescent lifetime or luminosity in the subfield is high position data bit plane
G/G ' times (G ' be occurrence number), G is to be more than but be not equal to 1 integer；Also, high position data bit plane formed gray scale by
High position data determines that the gray scale that low data bit plane is formed is occurred by low data at it in the luminosity of its corresponding subfield
Frame in mean flow rate determine；High position data has comprised at least the highest order data of binary system pixel gradation data, low bit
Data have comprised at least the lowest order digit evidence of binary system pixel gradation data；(6) in F frames, the order of subfield can pacify at random
Row, but the subfield of identical bit plane can not continuously occur；(7) the frame refreshing frequency of display is not less than 60Hz.Display driving electricity
Time schedule controller 105 is contained in road, for completing the transmission of ad hoc fashion.Further, dynamic memory is single times of speed
Synchronous DRAM or Double Data Rate synchronous DRAM, static memory will not disappear for data after write-in
And the memory that need not refresh.
It set forth below fourth embodiment：
It is essentially identical that this example grants embodiment three, is particular in that：
Further, as shown in fig. 6, preferred embodiment as a display, display 104 have amorphous for one kind
The display of silicon, polysilicon or monocrystalline silicon substrate, pixel-driving circuit 303 and luminescent device 310 are integrated with simultaneously on substrate, send out
Optical device 310 be a kind of device that can actively light or it is a kind of can reflected light device, the device that can actively light is Organic Electricity
Electroluminescence device or inorganic semiconductor luminescent device, can the device of reflected light be liquid crystal device or DMD or micromechanics
Device, pixel-driving circuit are used to produce the curtage required for luminescent device.
Further, display 104 has data displacement input function 301, can shift pixel grey scale serial mode
Input, serial shift input refer to 1 input or the multidigit input more than 1, and input interface 501 is logic level interface or low pressure
Differential interface, logic level interface are to represent logically high or logic low coffret by level, and low-voltage differential interface is logical
Cross differential signal and represent logically high or logic low coffret.Further, serial shift direction can be from the left picture of subfield
Element is to right pixel or from right pixel to left pixel.
Further, display 104 has row shift function module 302 and row Protection Counter Functions module 305, row shift function
The pixel data that module 302 inputs display driver circuit 102 transmits the particular row to display panel successively, so as to complete son
The serial shift input of field, row Protection Counter Functions module 305 is used to quickly reset particular row, effective so as to adjust pixel in subfield
Fluorescent lifetime.
Further, row and column can exchange, i.e., replace arranging with row, or replace row with row.
Preferred embodiment of the invention described in detail above.It should be appreciated that the ordinary skill of this area is without wound
The property made work can makes many modifications and variations according to the design of the present invention.Therefore, all technician in the art
Pass through the available technology of logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Scheme, all should be in the protection domain being defined in the patent claims.
Claims (10)
- A kind of 1. improved display subfield scanning Grey imaging method, it is characterised in that N number of including will have in frame memory The binary system pixel gradation data of bit is split as N number of bit plane by bit, and by N number of bit plane with certain party Formula is transferred to display pannel and forms the process of pixel grey scale, and institute's bit planes are to have identical weights in pixel grey scale data Set of data bits into data acquisition system, the N is integer more than 1, and the ad hoc fashion meets following condition：(1) picture Plain gradation data is transmitted in units of bit plane, complete bit plane continuously transmit process formed one it is independent Subfield；(2) each subfield has regular time length；(3) the pixel grey scale data on display pannel are transferred to pixel Luminosity updated immediately so that the luminosity of pixel is directly proportional to the fluorescent lifetime of pixel；(4) pixel is in F Luminosity in frame time is equal to average luminescence brightness of the pixel in the F frames, and F is to be more than but be not equal to 1 integer； (5) subfield of the bit plane of high position data occurs G times in adjacent G frames, and the subfield of the bit plane of low data is in adjacent G frames At most only occur G-1 time and its fluorescent lifetime or luminosity in the subfield for high position data bit plane G/G ' again, G ' is occurrence number, and G is to be more than but be not equal to 1 integer；The high position data comprises at least the binary system pixel grey According to highest order data, the low data comprise at least the binary system pixel gradation data lowest order digit evidence；(6) in F In frame, the subfield of identical bit plane can not continuously occur；(7) the frame refreshing frequency of display is not less than 60Hz.
- 2. display subfield as claimed in claim 1 scans Grey imaging method, it is characterised in that if bit plane is 1 bit, Pixel light emission when then pixel grey scale data are logic 1 or 0, the pixel does not light when pixel grey scale data are logical zero or 1；If Bit plane is more than 1 bit, then pixel light emission brightness is directly proportional to the pixel grey scale data of the bit plane for being more than 1.
- 3. display subfield as claimed in claim 1 scans Grey imaging method, it is characterised in that the pixel is when luminous Transient state brightness value keep constant in subfield, the transient state brightness value is set by the user to be together decided on weights amplitude, described User is set as the highest goal brightness that user wishes to reach and can set, if bit plane is 1 bit, the weights width The brightness value that pixel light emission when being logic 1 or 0 reaches is spent by pixel grey scale data, it is described if bit plane is more than 1 bit Weights amplitude is the pixel brightness value directly proportional to grey scale pixel value.
- 4. display subfield as claimed in claim 1 scans Grey imaging method, it is characterised in that the specific transmission mode Also include following condition：Institute's bit planes can repeat to transmit in F frames, the number of subfield corresponding to the bit plane of secondary high position data Measure for 2 times of the quantity of subfield corresponding to the bit plane of secondary low a data, especially when corresponding to secondary high position data bit plane When the quantity of subfield is 1, then fluorescent lifetime of the pixel in the subfield is time pixel of subfield corresponding to low data bit plane 2 times of fluorescent lifetime.
- 5. display subfield as claimed in claim 1 scans Grey imaging method, it is characterised in that the specific transmission mode Also include following condition：Transmission data to particular subfield in the transmitting procedure of subfield are zeroed out, and are existed so as to adjust pixel Fluorescent lifetime in the subfield, time high position data is set to correspond to the ratio that subfield corresponds to the pixel light emission time of subfield with time low data It is worth for 2:1 or close to 2:1.
- 6. display subfield as claimed in claim 1 scans Grey imaging method, it is characterised in that the specific transmission mode Also include following condition：N number of bit plane combines the possibility for forming fluorescent lifetime in different subfields 2NIt is individual or close to 2N It is individual, it is described to be close to 2N+/- 20%.
- 7. a kind of improved display subfield scanning Grey imaging device, it is characterised in that driven including frame memory and display Dynamic circuit, the frame memory is static memory or dynamic memory；What is stored in the frame memory has N number of bit Binary system pixel gradation data be split as N number of bit plane by bit, the display driver circuit by N number of bit plane with Ad hoc fashion is transferred to display pannel and forms pixel grey scale, and institute's bit planes are to have identical weights in pixel grey scale data Set of data bits into data acquisition system, the N is integer more than 1, and the ad hoc fashion meets following condition：(1) picture Plain gradation data is transmitted in units of bit plane, complete bit plane continuously transmit process formed one it is independent Subfield；(2) each subfield has regular time length；(3) the pixel grey scale data on display pannel are transferred to pixel Luminosity updated immediately so that the luminosity of pixel is directly proportional to the fluorescent lifetime of pixel；(4) pixel is in F Luminosity in frame time is equal to average luminescence brightness of the pixel in the F frames, and F is to be more than but be not equal to 1 integer； (5) subfield of the bit plane of high position data occurs G times in adjacent G frames, and the subfield of the plane of low data position is in adjacent G frames At most only occur G-1 time and its fluorescent lifetime or luminosity in the subfield for high position data bit plane G/G ' again, G ' is occurrence number, and G is to be more than but be not equal to 1 integer；The high position data comprises at least the binary system pixel grey According to highest order data, the low data comprised at least the lowest order digit evidence of the binary system pixel gradation data；(6) exist In F frames, the subfield of identical bit plane can not continuously occur；(7) the frame refreshing frequency of display is not less than 60Hz；The display is driven Time schedule controller is contained in dynamic circuit, for completing the transmission of the ad hoc fashion.
- 8. display subfield as claimed in claim 7 scans Grey imaging device, it is characterised in that the display is one kind Display with non-crystalline silicon, polysilicon or monocrystalline silicon substrate, pixel-driving circuit and luminous is integrated with the substrate simultaneously Device, the luminescent device be a kind of device that can actively light or it is a kind of can reflected light device, it is described actively to light Device is organic electroluminescence device or inorganic semiconductor luminescent device, it is described can the device of reflected light be liquid crystal device or numeral Micro mirror element or micro mechanical device, the pixel-driving circuit are used to produce the curtage required for luminescent device.
- 9. display subfield as claimed in claim 7 scans Grey imaging device, it is characterised in that the display has number According to displacement input functional module, the data displacement input functional module, which shifts pixel grey scale serial mode, to be inputted, the shifting It is 1 that the data bit width of position input, which is more than or equal to, and input interface is logic level interface or low-voltage differential interface.
- 10. display subfield as claimed in claim 7 scans Grey imaging device, it is characterised in that the display has Row shift function module and row Protection Counter Functions module, the pixel data that the row shift function module inputs display driver circuit The particular row to display panel is transmitted successively, and the serial shift for completing subfield is inputted, and the row Protection Counter Functions module is used In particular row is quickly reset, for adjusting the effective fluorescent lifetime of pixel in subfield.
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