CN108682382A - The driving method of voltage-type pixel unit circuit, threshold voltage compensation with valve value compensation, the display methods of image or video - Google Patents
The driving method of voltage-type pixel unit circuit, threshold voltage compensation with valve value compensation, the display methods of image or video Download PDFInfo
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- CN108682382A CN108682382A CN201810517654.XA CN201810517654A CN108682382A CN 108682382 A CN108682382 A CN 108682382A CN 201810517654 A CN201810517654 A CN 201810517654A CN 108682382 A CN108682382 A CN 108682382A
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
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- 239000008186 active pharmaceutical agent Substances 0.000 claims description 3
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- 238000005516 engineering process Methods 0.000 description 9
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 8
- 229910052710 silicon Inorganic materials 0.000 description 8
- 239000010703 silicon Substances 0.000 description 8
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- 230000005611 electricity Effects 0.000 description 3
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- 239000004065 semiconductor Substances 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
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- 229910021419 crystalline silicon Inorganic materials 0.000 description 1
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- 230000035800 maturation Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
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- 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
- G09G3/22—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 using controlled light sources
- G09G3/30—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 using controlled light sources using electroluminescent panels
- G09G3/32—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
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- 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
- G09G3/22—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 using controlled light sources
- G09G3/30—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 using controlled light sources using electroluminescent panels
- G09G3/32—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3225—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
- G09G3/3233—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix with pixel circuitry controlling the current through the light-emitting element
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- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention discloses a kind of voltage-type pixel unit circuit with valve value compensation, it is characterised in that it includes：The first transistor M1, second transistor M2, third transistor M3, the 4th transistor M4, the 5th transistor M5, sampling holding capacitor C1, data signal line VDATA, sampling control signal line SMP, common cathode power cord VCOM, the luminescent device for keeping signal wire HLD, power cord VDD, luminescent device.The voltage-type pixel unit drive circuit of novel belt valve value compensation proposed by the present invention can effectively solve the fluctuation that driving tube changes of threshold brings pel array driving current, and then improve the display consistency of whole display.
Description
Technical field
The pixel list of pixel unit circuit more particularly to OLED/LED the micro displays driving shown the present invention relates to self-luminous
First circuit.
Background technology
In recent years as ((Virtual Reality virtually show AR (Augmented Reality, augmented reality)/VR
The development of technology, the micro display technology being closely related therewith have also obtained extensive concern in fact).Micro display (Microdisplay)
Technology is a branch of display technology field, and display Diagonal Dimension is generally less than 1 inch (2.54cm) or refers to that
It is a little small to needing the display of optical amplifier to be known as micro-display.Micro display technology common at present has OLEDoS (Organic
Light-Emitting Diode on Silicon, silicon-based organic light-emitting), LEDoS (Light Emitting Diode on
Silicon, silicon-based diode shine), LCoS (Liquid Crystal on Silicon, liquid crystal on silicon) and DMD (Digital
Micro mirror Device, Digital Micromirror Device) four kinds, wherein OLEDoS and LEDoS are belonged to and are actively shone, and LCoS
Then belong to passive with DMD to shine；Meanwhile OLEDoS and LEDoS are also with the excellent of low-power consumption, high contrast and quick response
Point, therefore they are more suitably applied in AR and VR technologies.
OLEDoS and LEDoS micro-displays utilize non-crystalline silicon, microcrystal silicon or low temperature polysilicon process different from conventional,
It is using silicon single crystal wafer as substrate, that is to say, that the integrated circuit CMOS (Complementary of existing maturation may be used in it
Metal-Oxide-Semiconductor, complementary metal oxide semiconductor) technique, therefore display screen not only may be implemented in it
The active matrix addressed various functions such as scan chain circuits, D/A conversion circuit, band-gap reference of can also realizing of pixel
Drive control circuit increases reliability, realizes lightweight to greatly reduce the aerial lug of device.
The pixel unit circuit of OLEDoS and LEDoS is that each pixel size of current is realized in micro-display array of display
The levels of precision of the circuit of control, each pixel current control directly affects the display consistency of entire micro-display；And it is current
Traditional voltage-type pixel unit circuit can lead between pixel and pixel driving tube parameter not due to the deviation of manufacturing process
Unanimously, and then the electric current between each pixel unit is caused to have a certain difference.In addition, the pixel unit circuit of different structure
The design of whole drive scheme can be influenced, thus the reasonability of pixel unit circuit design just seems most important.
Existing pixel cell capacitance is as shown in Figure 1, it belongs to the pixel unit circuit of voltage-type, by most basic 2T1C
(2 transistors, 1 capacitance) is constituted.Its basic operation principle is：
(1) data write phase：When WR is high level, M2 pipes conducting, the voltage signal VDATA of input is written to
On the grid and capacitance C1 of M1 pipes；
(2) glow phase：WR becomes low level, and the shutdown of M2 pipes is stored to the data voltage driving M1 pipes generation pair on C1
The driving current answered drives a current through OLED or LED component and shines, luminous brightness size and write-in data voltage phase
It is corresponding.
Prior art there are the problem of：
Since the resolution ratio of micro-display is generally 800 × 600 or above (1280 × 1024 is even higher), picture
The quantity of plain element circuit has reached hundreds of thousands even million ranks.And existing CMOS technology is inclined due in the fabrication process
Difference, the threshold voltage (Vth) of M1 pipes can have a certain difference in different pixel unit circuits, and then each in pel array
Driving tube (M1) can also have a certain difference when converting input voltage into electric current, and finally influence the consistency of display.
Invention content
It is brought due to threshold deviation for the voltage-type pixel unit circuit driving tube that existing self-emitting display uses
Display consistency problem provides a kind of voltage-type pixel unit circuit structure of novel belt valve value compensation.
The present invention discloses a kind of voltage-type pixel unit circuit with valve value compensation first, it includes：The first transistor
M1, second transistor M2, third transistor M3, the 4th transistor M4, the 5th transistor M5, sampling holding capacitor C1, data letter
Number line VDATA, sampling control signal line SMP, the common cathode power cord for keeping signal wire HLD, power cord VDD, luminescent device
VCOM, luminescent device,
On the one hand the power cord VDD connects the top crown of sampling holding capacitor C1, on the other hand connect the 4th transistor
The source electrode of M4；The bottom crown of the sampling holding capacitor C1 is separately connected the grid of the first transistor M1, second transistor M2
Drain electrode；
The sampling control signal line SMP is separately connected the grid of the grid of second transistor M2, third transistor M3；
The grid of the grid for keeping signal wire HLD connection third transistor M4, the 5th transistor M5；
The drain electrode of the data signal line VDATA connection third transistor M3；
The drain electrode of the first transistor M1, the source electrode of second transistor M2, the 4th transistor M4 drain electrode mutual connection；
The source electrode mutual connection of the source electrode of the first transistor M1, the source electrode of third transistor M3, the 5th transistor M5；
The drain electrode of the 5th transistor M5 is connected with the anode of luminescent device；
The cathode of the luminescent device is connected with power cord VCOM.
Preferably, the luminescent device is OLED or LED.
Preferably, the first transistor M1 be NMOS tube, second transistor M2, third transistor M3, the 4th transistor M4 and
5th transistor M5 is PMOS tube.
The invention also discloses a kind of driving methods of threshold voltage compensation, based on the voltage-type with valve value compensation
Pixel unit circuit, including two stages：
(1) data sampling and valve value compensation stage：This stage sampling control signal line SMP is low level, keeps signal wire
HLD is high level, the first transistor M1, second transistor M2 and third transistor M3 conductings, the 4th transistor and the 5th crystal
Pipe M5 cut-offs, luminescent device are in non-light emitting state；The grid of the first transistor M1 and drain electrode pass through second transistor M2 at this time
It is shorted together, to which the first transistor M1 constitutes a diode type of attachment；At the same time, data signal line VDATA is logical
It crosses third transistor M3 and the source electrode of the first transistor M1 links together, in this stage, due to the 4th transistor M4 cut-offs, therefore
The grid of 4th transistor M4 is that the bottom crown of sampling holding capacitor C1 keeps voltage for VDATA+Vth, and wherein Vth is first brilliant
The threshold voltage of body pipe M1；
(2) glow phase：This stage sampling control signal line SMP is high level, and HLD is low level, second transistor M2
End with third transistor M3, the 4th transistor M4 and the 5th transistor M5 conductings, the electricity being maintained on sampling holding capacitor C1
VDATA+Vth driving the first transistors M1 is pressed to generate driving current IM1And flow through the 5th transistor M5 and luminescent device, photophore
Part is according to driving current IM1Size send out the light of respective intensities；Driving current IM1Size be specially：
(2-1) is if the first transistor M1 is operated in sub-threshold region：
In formula, I0Indicate that the first transistor M1 is operated in normalized drain terminal electric current, V when subthreshold valuethIndicate first crystal
The threshold voltage of pipe M1, n are and the relevant empirical value of technique, VTFor thermal voltage, W and L indicate the first transistor M1 raceway grooves respectively
Width and length, VDATAIndicate the data voltage of input, VxIndicate the first transistor M1 source voltage terminals；
(2-2) is if the first transistor M1 is operated in linear zone：
μ indicates the mobility of the first transistor M1, C in formulaoxIndicate the grid oxygen capacitance of the first transistor M1 unit areas,
VDS,M1Indicate the source-drain voltage of the first transistor M1, VthIndicate the threshold voltage of the first transistor M1, VDATAIndicate the number of input
According to voltage, VxIndicate that the first transistor M1 source voltage terminals, W and L indicate the width and length of the first transistor M1 raceway grooves respectively；
(2-3) is if the first transistor M1 is operated in saturation region：
μ indicates the mobility of the first transistor M1, C in formulaoxIndicate the grid oxygen capacitance of the first transistor M1 unit areas,
VthIndicate the threshold voltage of the first transistor M1, VDATAIndicate the data voltage of input, VxIndicate the first transistor M1 source electricity
Pressure, W and L indicate the width and length of the first transistor M1 raceway grooves respectively.
The invention also discloses the display methods of a kind of image or video, the driving based on the threshold voltage compensation
Method, the alternate run of two working stage complete the display data update of a frame frame, and then complete image or video
Display.
Beneficial effects of the present invention
The voltage-type pixel unit drive circuit for the novel belt valve value compensation that this patent proposes, can effectively solve driving tube threshold
Value changes the fluctuation brought to pel array driving current, and then improves the display consistency of whole display.
Description of the drawings
Fig. 1 is conventional voltage type pixel unit circuit
Fig. 2 is the voltage-type pixel unit circuit of the present invention
Fig. 3 is the sampling compensated stage of the voltage-type pixel unit circuit of the present invention
Fig. 4 is the glow phase of the voltage-type pixel unit circuit of the present invention
Fig. 5 is the voltage-type pixel unit circuit working timing figure of the present invention
Specific implementation mode
With reference to embodiment, the invention will be further described, and but the scope of the present invention is not limited thereto：
In conjunction with Fig. 2, the voltage-type pixel unit circuit with valve value compensation, it includes：The first transistor M1, second transistor
M2, third transistor M3, the 4th transistor M4, the 5th transistor M5, sampling holding capacitor C1, data signal line VDATA, sampling
Control signal wire SMP, common cathode power cord VCOM, the luminescent device for keeping signal wire HLD, power cord VDD, luminescent device,
On the one hand the power cord VDD connects the top crown of sampling holding capacitor C1, on the other hand connect the 4th transistor
The source electrode of M4；The bottom crown of the sampling holding capacitor C1 is separately connected the grid of the first transistor M1, second transistor M2
Drain electrode；
The sampling control signal line SMP is separately connected the grid of the grid of second transistor M2, third transistor M3；
The grid of the grid for keeping signal wire HLD connection third transistor M4, the 5th transistor M5；
The drain electrode of the data signal line VDATA connection third transistor M3；
The drain electrode of the first transistor M1, the source electrode of second transistor M2, the 4th transistor M4 drain electrode mutual connection；
The source electrode mutual connection of the source electrode of the first transistor M1, the source electrode of third transistor M3, the 5th transistor M5；
The drain electrode of the 5th transistor M5 is connected with the anode of luminescent device；
The cathode of the luminescent device is connected with power cord VCOM.
Wherein：The luminescent device can be OLED or LED.The first transistor M1 is NMOS tube, second transistor M2, the
Three transistor M3, the 4th transistor M4 and the 5th transistor M5 are PMOS tube.
A kind of driving method of threshold voltage compensation, based on the voltage-type pixel unit circuit with valve value compensation,
Including two stages：
(1) data sampling and valve value compensation stage：It is low level in conjunction with Fig. 3, this stage sampling control signal line SMP, protects
It is high level, the first transistor M1, second transistor M2 and third transistor M3 conducting to hold signal wire HLD, the 4th transistor and
5th transistor M5 cut-offs, luminescent device are in non-light emitting state；The grid of the first transistor M1 and drain electrode pass through second at this time
Transistor M2 is shorted together, to which the first transistor M1 constitutes a diode type of attachment；At the same time, data signal line
VDATA is linked together by third transistor M3 and the source electrode of the first transistor M1, in this stage, due to the 4th transistor M4
Cut-off, therefore it is VDATA+Vth, wherein Vth that the bottom crown that the grid of the 4th transistor M4 is sampling holding capacitor C1, which keeps voltage,
For the threshold voltage of the first transistor M1；
(2) glow phase：In conjunction with Fig. 4, this stage sampling control signal line SMP is high level, and HLD is low level, second
Transistor M2 and third transistor M3 cut-offs, the 4th transistor M4 and the 5th transistor M5 conductings, are maintained at sampling holding capacitor
Voltage VDATA+Vth driving the first transistors M1 on C1 generates driving current IM1And flow through the 5th transistor M5 and photophore
Part, luminescent device is according to driving current IM1Size send out the light of respective intensities；Driving current IM1Size be specially：
(2-1) is if the first transistor M1 is operated in sub-threshold region：
In formula, I0Indicate that the first transistor M1 is operated in normalized drain terminal electric current, V when subthreshold valuethIndicate first crystal
The threshold voltage of pipe M1, n are and the relevant empirical value of technique, VTFor thermal voltage, W and L indicate the first transistor M1 raceway grooves respectively
Width and length, VDATAIndicate the data voltage of input, VxIndicate the first transistor M1 source voltage terminals；
(2-2) is if the first transistor M1 is operated in linear zone：
μ indicates the mobility of the first transistor M1, C in formulaoxIndicate the grid oxygen capacitance of the first transistor M1 unit areas,
VDS,M1Indicate the source-drain voltage of the first transistor M1, VthIndicate the threshold voltage of the first transistor M1, VDATAIndicate the number of input
According to voltage, VxIndicate that the first transistor M1 source voltage terminals, W and L indicate the width and length of the first transistor M1 raceway grooves respectively；
(2-3) is if the first transistor M1 is operated in saturation region：
μ indicates the mobility of the first transistor M1, C in formulaoxIndicate the grid oxygen capacitance of the first transistor M1 unit areas,
VthIndicate the threshold voltage of the first transistor M1, VDATAIndicate the data voltage of input, VxIndicate the first transistor M1 source electricity
Pressure, W and L indicate the width and length of the first transistor M1 raceway grooves respectively.
It can be seen that due to compensating for a Vth in sample phase, final current formula and Vth be not related
System.The voltage-type pixel unit drive circuit for the novel belt valve value compensation that this patent proposes can effectively solve driving pipe threshold and become
Change the fluctuation brought to pel array driving current, and then improves the display consistency of whole display.
A kind of display methods of image or video, based on the driving method of the threshold voltage compensation, in conjunction with Fig. 5,
The alternate run of two working stage completes the display data update of a frame frame, and then completes the display of image or video.
Specific embodiment described herein is only to be illustrated to spirit of that invention.Technology belonging to the present invention is led
The technical staff in domain can make various modifications or additions to the described embodiments or replace by a similar method
In generation, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.
Claims (5)
1. a kind of voltage-type pixel unit circuit with valve value compensation, it is characterised in that it includes：The first transistor M1, the second crystalline substance
Body pipe M2, third transistor M3, the 4th transistor M4, the 5th transistor M5, sampling holding capacitor C1, data signal line VDATA,
Sampling control signal line SMP, common cathode power cord VCOM, the photophore for keeping signal wire HLD, power cord VDD, luminescent device
Part,
On the one hand the power cord VDD connects the top crown of sampling holding capacitor C1, on the other hand connect the 4th transistor M4's
Source electrode；The bottom crown of the sampling holding capacitor C1 is separately connected the drain electrode of the grid of the first transistor M1, second transistor M2；
The sampling control signal line SMP is separately connected the grid of the grid of second transistor M2, third transistor M3；
The grid of the grid for keeping signal wire HLD connection third transistor M4, the 5th transistor M5；
The drain electrode of the data signal line VDATA connection third transistor M3；
The drain electrode of the first transistor M1, the source electrode of second transistor M2, the 4th transistor M4 drain electrode mutual connection；
The source electrode mutual connection of the source electrode of the first transistor M1, the source electrode of third transistor M3, the 5th transistor M5；
The drain electrode of the 5th transistor M5 is connected with the anode of luminescent device；
The cathode of the luminescent device is connected with power cord VCOM.
2. circuit according to claim 1, it is characterised in that the luminescent device is OLED or LED.
3. circuit according to claim 1, it is characterised in that the first transistor M1 is NMOS tube, second transistor M2, the
Three transistor M3, the 4th transistor M4 and the 5th transistor M5 are PMOS tube.
4. a kind of driving method of threshold voltage compensation is based on circuit described in claim 1, it is characterised in that it includes two
Stage：
(1) data sampling and valve value compensation stage：This stage sampling control signal line SMP is low level, and holding signal wire HLD is
High level, the first transistor M1, second transistor M2 and third transistor M3 conductings, the 4th transistor and the 5th transistor M5 are cut
Only, luminescent device is in non-light emitting state；The grid of the first transistor M1 and drain electrode are existed by second transistor M2 short circuits at this time
Together, to which the first transistor M1 constitutes a diode type of attachment；At the same time, data signal line VDATA passes through third
Transistor M3 and the source electrode of the first transistor M1 link together, and in this stage, due to the 4th transistor M4 cut-offs, therefore the 4th is brilliant
The grid of body pipe M4 is that the bottom crown of sampling holding capacitor C1 keeps voltage for VDATA+Vth, and wherein Vth is the first transistor M1
Threshold voltage；
(2) glow phase：This stage sampling control signal line SMP is high level, and HLD is low level, second transistor M2 and the
Three transistor M3 cut-offs, the 4th transistor M4 and the 5th transistor M5 conductings, the voltage being maintained on sampling holding capacitor C1
VDATA+Vth drives the first transistor M1 to generate driving current IM1And flow through the 5th transistor M5 and luminescent device, luminescent device
According to driving current IM1Size send out the light of respective intensities；Driving current IM1Size be specially：
(2-1) is if the first transistor M1 is operated in sub-threshold region：
In formula, I0Indicate that the first transistor M1 is operated in normalized drain terminal electric current, V when subthreshold valuethIndicate the first transistor M1
Threshold voltage, n be and the relevant empirical value of technique, VTFor thermal voltage, W and L indicate the width of the first transistor M1 raceway grooves respectively
Degree and length, VDATAIndicate the data voltage of input, VxIndicate the first transistor M1 source voltage terminals；
(2-2) is if the first transistor M1 is operated in linear zone：
μ indicates the mobility of the first transistor M1, C in formulaoxIndicate the grid oxygen capacitance of the first transistor M1 unit areas, VDS,M1Table
Show the source-drain voltage of the first transistor M1, VthIndicate the threshold voltage of the first transistor M1, VDATAIndicate the data voltage of input,
VxIndicate that the first transistor M1 source voltage terminals, W and L indicate the width and length of the first transistor M1 raceway grooves respectively；
(2-3) is if the first transistor M1 is operated in saturation region：
μ indicates the mobility of the first transistor M1, C in formulaoxIndicate the grid oxygen capacitance of the first transistor M1 unit areas, VthIt indicates
The threshold voltage of the first transistor M1, VDATAIndicate the data voltage of input, VxIndicate the first transistor M1 source voltage terminals, W and L
The width and length of the first transistor M1 raceway grooves are indicated respectively.
5. the display methods of a kind of image or video, based on the production method of the driving current described in claim 4, feature
It is that the alternate run of two working stages completes the display data update of a frame frame, and then completes the aobvious of image or video
Show.
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| CN201810517654.XA CN108682382A (en) | 2018-05-25 | 2018-05-25 | The driving method of voltage-type pixel unit circuit, threshold voltage compensation with valve value compensation, the display methods of image or video |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112767881A (en) * | 2021-02-10 | 2021-05-07 | Tcl华星光电技术有限公司 | Pixel driving circuit and display panel |
| CN113889020A (en) * | 2021-10-18 | 2022-01-04 | 深圳市华星光电半导体显示技术有限公司 | GOA circuit and display panel |
| CN116092432A (en) * | 2023-03-13 | 2023-05-09 | 无锡美科微电子技术有限公司 | Pixel driving circuit, driving method thereof, display panel and display device |
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| CN112767881A (en) * | 2021-02-10 | 2021-05-07 | Tcl华星光电技术有限公司 | Pixel driving circuit and display panel |
| CN113889020A (en) * | 2021-10-18 | 2022-01-04 | 深圳市华星光电半导体显示技术有限公司 | GOA circuit and display panel |
| CN113889020B (en) * | 2021-10-18 | 2024-03-26 | 深圳市华星光电半导体显示技术有限公司 | GOA circuit and display panel |
| CN116092432A (en) * | 2023-03-13 | 2023-05-09 | 无锡美科微电子技术有限公司 | Pixel driving circuit, driving method thereof, display panel and display device |
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