CN107818757A - Active matrix/organic light emitting display and its initialization voltage method of adjustment - Google Patents
Active matrix/organic light emitting display and its initialization voltage method of adjustment Download PDFInfo
- Publication number
- CN107818757A CN107818757A CN201610817861.8A CN201610817861A CN107818757A CN 107818757 A CN107818757 A CN 107818757A CN 201610817861 A CN201610817861 A CN 201610817861A CN 107818757 A CN107818757 A CN 107818757A
- Authority
- CN
- China
- Prior art keywords
- initialization voltage
- light emitting
- organic light
- active matrix
- emitting display
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- 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
- G09G3/3258—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 voltage across the light-emitting element
-
- 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]
- G09G3/3275—Details of drivers for data electrodes
- G09G3/3291—Details of drivers for data electrodes in which the data driver supplies a variable data voltage for setting the current through, or the voltage across, the light-emitting elements
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The invention provides a kind of active matrix/organic light emitting display and its initialization voltage method of adjustment, wherein, the active matrix/organic light emitting display includes：Display unit, initialization voltage produces and adjustment circuit and multiple sample circuits；The display unit is divided into multiple regions, the multiple sample circuit is used to sample the initialization voltage in the multiple region, the initialization voltage produces and adjustment circuit is used to export initialization voltage to the multiple region, and the sampled signal provided according to the multiple sample circuit adjusts the initialization voltage.In active matrix/organic light emitting display provided by the invention and its initialization voltage method of adjustment, using multichannel input and multi-point sampling feedback system, the initialization voltage of regional in control display unit, so that the initialization voltage of regional is consistent, display quality is influenceed so as to avoid initialization voltage from fluctuating.
Description
Technical field
The present invention relates to technical field of flat panel display, more particularly to a kind of active matrix/organic light emitting display and its initial
Change voltage adjusting method.
Background technology
OLED (English full name Organic Lighting Emitting Display, abbreviation OLED) is
A kind of active luminescent device, compared to present main flow flat panel display Thin Film Transistor-LCD (English full name Thin
Film Transistor liquid crystal display, abbreviation TFT-LCD), OLED have high-contrast, wide viewing angle,
The advantages that low-power consumption, thinner volume, it is expected to turn into the flat panel display of future generation after TFT-LCD, is that current flat board shows
Show one of the most technology that attracted attention in technology.
According to the difference of type of drive, OLED is divided into passive-matrix OLED (English full name
Passive Matrix Organic Lighting Emitting Display, abbreviation PMOLED) and the organic hair of active-matrix
Optical display unit (English full name Active Matrix Organic Lighting Emitting Display, abbreviation AMOLED),
Active matrix organic light-emitting display is also referred to as active matrix/organic light emitting display.Active matrix/organic light emitting display is usual
Drive circuit including an OLED display panel and for driving the OLED display panel, the OLED display panel include
The pel array that scan line, data wire and the scan line and data wire are defined, each pixel of the pel array
Include Organic Light Emitting Diode (also referred to as OLED) and the image element circuit being connected with the Organic Light Emitting Diode, it is described
Image element circuit is fed to the driving current of the Organic Light Emitting Diode to control.
Active matrix/organic light emitting display the course of work generally include initial phase, initial phase utilize
Initialization voltage initializes to OLED and image element circuit, to prevent the OLED and image element circuit from making for a long time
With rear gradual aging, cause to show the problem of inconsistent.
However, find that initialization voltage has fluctuation in actual use.The fluctuation of initialization voltage not only can be straight
Connecing influences the brightness of OLED display panel, and display that can be to OLED display panel bad impacts.For example, OLED is shown
Uneven (mura) phenomenon of display be present in panel, when initialize low voltage or it is higher when OLED display panel display inequality have
Different degrees of change, display quality can produce defective products when declining serious, influence the yield of product.
Base this, how to solve existing active matrix/organic light emitting display in the course of the work because initialization voltage fluctuate
And the problem of influenceing display quality, a technical problem urgently to be resolved hurrily into those skilled in the art.
The content of the invention
It is an object of the invention to provide a kind of active matrix/organic light emitting display and its initialization voltage method of adjustment,
To solve to influence display quality because initialization voltage fluctuates in the existing active matrix/organic light emitting display course of work
Problem.
To solve the above problems, the present invention provides a kind of active matrix/organic light emitting display, the active matrix is organic
Active display includes：Display unit, initialization voltage produces and adjustment circuit and multiple sample circuits；The display unit is drawn
It is divided into multiple regions, the multiple sample circuit is used to sample the initialization voltage in the multiple region, described initial
Change voltage generation and adjustment circuit is used to export initialization voltage to the multiple region, and carried according to the multiple sample circuit
The sampled signal of confession adjusts the initialization voltage.
Optionally, in described active matrix/organic light emitting display, the initialization voltage produces and adjustment circuit
Including multiple inputs and multiple output ends；The multiple input is connected with the output end of the multiple sample circuit, is used for
Receive the sampled signal of the multiple sample circuit output；The multiple output end and multiple regions of the display unit connect
Connect, for exporting initialization voltage to the multiple region.
Optionally, in described active matrix/organic light emitting display, the display unit is divided into multiple regions.
Optionally, in described active matrix/organic light emitting display, the display unit has multiple pixels, described
Multiple pixels arrange in array way, and the areal of the display unit decile is equal to the line number of the pixel.
Optionally, in described active matrix/organic light emitting display, each sample circuit includes a sampling crystal
Pipe, one compare to be arranged at the sampling transistor and turns with modulus with amplifier and an analog-digital converter, the comparison and amplifier
Between parallel operation, the sampling transistor is used for the output for controlling the sampled signal, and the comparison and amplifier are used for described
Sampled signal is compared and amplified, and the analog-digital converter is used to carry out analog-to-digital conversion to the sampled signal.
Optionally, in described active matrix/organic light emitting display, the comparison and amplifier have the first input
End, the second input and comparing amplification output end, the first input end is connected with the drain electrode of the sampling transistor, and described the
Two inputs are produced with the initialization voltage and the first output end of adjustment circuit is connected, relatively amplification output end and the institute
The input connection of analog-digital converter is stated, the output end of the analog-digital converter is produced with the initialization voltage and adjustment circuit
Input connection, the source electrode of the sampling transistor and the initialization voltage produce and an output end of adjustment circuit connects
Connect, the grid of the sampling transistor is connected with clock cable.
Optionally, in described active matrix/organic light emitting display, the sample circuit also includes a capacitor, institute
The one end for stating capacitor is connected with the drain electrode of the sampling transistor, the other end ground connection of the capacitor.
Optionally, in described active matrix/organic light emitting display, the sampling transistor is arranged at the display
In unit.
Accordingly, present invention also offers a kind of initialization voltage method of adjustment of active matrix/organic light emitting display,
The initialization voltage method of adjustment of the active matrix/organic light emitting display includes：
Produced by initialization voltage and adjustment circuit exports default initialization electricity to multiple regions of display unit respectively
Pressure；
The initialization voltage in the multiple region is sampled using multiple sample circuits；And
The initialization voltage in the multiple region is adjusted according to sampled result.
Optionally, in the initialization voltage method of adjustment of described active matrix/organic light emitting display, utilization is multiple
The detailed process that sample circuit is sampled to the initialization voltage in the multiple region includes：
Open multiple sampling transistors so that the multiple sampling transistor is according to the default initialization in the multiple region
Voltage exports multiple sampled signals respectively；
By the multiple sampled signal compared with a reference voltage, to obtain multiple voltage difference sis；
The multiple voltage difference si is amplified；And
Multiple voltage difference sis after amplification are subjected to analog-to-digital conversion, to form multiple control signal.
In active matrix/organic light emitting display provided by the invention and its initialization voltage method of adjustment, using multichannel
Input and multi-point sampling feedback system, the initialization voltage of regional in control display unit so that regional just
Beginningization voltage is consistent, and influences display quality so as to avoid initialization voltage from fluctuating.
Brief description of the drawings
Fig. 1 is the structural representation of the active matrix/organic light emitting display of the embodiment of the present invention；
Fig. 2 is the flow of the initialization voltage method of adjustment of the active matrix/organic light emitting display of the embodiment of the present invention
Figure.
Embodiment
Below in conjunction with the drawings and specific embodiments to a kind of active matrix/organic light emitting display proposed by the present invention and its
Initialization voltage method of adjustment is described in further detail.According to following explanation and claims, advantages of the present invention and spy
Sign will become apparent from.It should be noted that accompanying drawing uses using very simplified form and non-accurately ratio, only to side
Just the purpose of the embodiment of the present invention, is lucidly aided in illustrating.
Fig. 1 is refer to, it is the structural representation of the active matrix/organic light emitting display of the embodiment of the present invention.Such as Fig. 1
Shown, the active matrix/organic light emitting display 100 includes：Display unit 10, initialization voltage produces and adjustment circuit 20
With multiple sample circuits, the display unit 10 is divided into multiple regions, and the multiple sample circuit is used for the multiple area
The initialization voltage in domain is sampled, and the initialization voltage produces and adjustment circuit 20 is used to export just to the multiple region
Beginningization voltage, and the sampled signal provided according to the multiple sample circuit adjusts the initialization voltage.
Specifically, the display unit 10 has multiple pixel (not shown)s, the multiple pixel is in M × N battle array
Column distribution, wherein, M is the columns of pixel, and N is the line number of pixel, and M and N are the positive integer more than or equal to 1.Each pixel is equal
Including Organic Light Emitting Diode (also referred to as OLED) and the image element circuit being connected with the Organic Light Emitting Diode (in figure not
Show), the image element circuit is fed to the driving current of the Organic Light Emitting Diode to control.
In the present embodiment, the display unit 10 is divided into multiple regions, the image element circuit in each region with it is described just
Beginningization voltage produces and adjustment circuit 20 connects, and the initialization voltage produces and adjustment circuit 20 is electric for the pixel in each region
Road provides initialization voltage.
Please continue to refer to Fig. 1, initialization voltage produces and adjustment circuit 20 includes multiple inputs and multiple output ends, often
Output end of the individual input with a sample circuit is connected, each defeated for receiving the sampled signal of the sample circuit output
Go out image element circuit of the end with a region in the display unit 10 to be connected, it is initial for being exported to the image element circuit in the region
Change voltage.
For the quantity of the sample circuit depending on the quantity of the zoning of display unit 10, each region is typically right
Answer a sample circuit.
Preferably, the display unit 10 is divided into multiple regions.For example, the active matrix/organic light emitting display
100 display unit 10 is divided into three regions.Accordingly, the active matrix/organic light emitting display 100 is adopted including three
Sample circuit, the corresponding sampling sub-circuit in each region of display unit 10.
In the present embodiment, the display unit 10 of the active matrix/organic light emitting display 100 is divided into n region.Phase
Answer, the active matrix/organic light emitting display 100 includes n sample circuit.Wherein, n is the positive integer more than 1.
When n=N (i.e. per one-row pixels be a region), the initialization voltage generation and adjustment circuit 20 it is each
Output end corresponds to one-row pixels circuit and is attached thereto, for exporting initialization voltage, each sampling electricity to the row image element circuit
Road samples to the initialization voltage of one-row pixels circuit.
Please continue to refer to Fig. 1, the active matrix/organic light emitting display 100 includes multiple sample circuits, each sampling
Circuit compares including a sampling transistor, one to be arranged at and adopts with amplifier and an analog-digital converter, the comparison and amplifier
Between sample transistor AND gate analog-digital converter, the sampling transistor is used for the output for controlling sampled signal, the comparison and amplification
Device is used to sampled signal is compared and amplified, and the analog-digital converter is used to carry out analog-to-digital conversion to sampled signal.
Wherein, the comparison and amplifier have first input end (+), the second input (-) and compare amplification output
The first input end (+) of end, the comparison and amplifier is connected with the drain electrode of the sampling transistor, the comparison and amplifier
The second input (-) produced with the initialization voltage and the first output end of adjustment circuit 20 is connected, it is described relatively to amplify
The input of output end and analog-digital converter is connected, and the output end of the analog-digital converter is produced and adjusted with the initialization voltage
The input connection of whole circuit 20, the source electrode of the sampling transistor and the initialization voltage produce and adjustment circuit 20
One output end is connected, and the grid of the sampling transistor is connected with clock cable, for receiving clock signal clk.
As shown in figure 1, the first sample circuit compares and amplifier X1 and the first mould including the first sampling transistor M1, first
Number converter U1, first compares and is connected with amplifier X1 first input end (+) with the first sampling transistor M1 drain electrode, and first
Compare and connect with amplifier X1 the second input (-) and the first output end of initialization voltage generation and adjustment circuit 20
Connect, first compares and be connected with amplifier X1 output end with the first analog-digital converter U1 input, the first analog-digital converter U1
Output end produced with the initialization voltage and the first input end of adjustment circuit 20 is connected, the first sampling transistor M1 source
Pole is produced with the initialization voltage and the first output end of adjustment circuit 20 is connected, and it is brilliant that the second sample circuit includes the second sampling
Body pipe M2, second are compared compares and amplifier X2 first input end (+) with amplifier X2 and the second analog-digital converter U2, second
Drain electrode with the second sampling transistor M2 is connected, and second compares and amplifier X2 the second input (-) and the initialization electricity
Pressure produces and the connection of the first output end of adjustment circuit 20, and second compares and amplifier X2 output end and the second analog-digital converter
U2 input connection, the second analog-digital converter U2 output end and initialization voltage generation and the second of adjustment circuit 20
Input connects, and the second sampling transistor M2 source electrode is produced with the initialization voltage and the second output end of adjustment circuit 20
Connection, by that analogy, the n-th sample circuit are compared and amplifier Xn and the n-th analog-digital converter including the n-th sampling transistor Mn, n-th
Un, n-th compares and is connected with amplifier Xn first input end (+) with the n-th sampling transistor Mn drain electrode, and n-th compares and amplify
Device Xn the second input (-) is produced with the initialization voltage and the first output end of adjustment circuit 20 is connected, and n-th compares
Be connected with amplifier Xn output end with the n-th analog-digital converter Un input, the n-th analog-digital converter Un output end with it is described
Initialization voltage produces and the connection of the n-th input of adjustment circuit 20, the n-th sampling transistor Mn source electrode and the initialization electricity
Pressure produces and the connection of the n-th output end of adjustment circuit 20.
Preferably, the first sampling transistor M1 to the n-th sampling transistor Mn may be contained within the display unit 10.
Please continue to refer to Fig. 1, each sample circuit also includes a capacitor, one end of the capacitor and the sampling electricity
The drain electrode connection of the sampling transistor on road, the other end ground connection of the capacitor.As shown in figure 1, the first capacitor C1 one end
Drain electrode with the first sampling transistor M1 is connected, the first capacitor C1 other end ground connection, the second capacitor C2 one end and the
Two sampling transistor M2 drain electrode connection, the second capacitor C2 other end ground connection, by that analogy, the n-th capacitor Cn one end
Drain electrode with the n-th sampling transistor Mn is connected, the n-th capacitor Cn other end ground connection.
Please continue to refer to Fig. 1, when the first sampling transistor M1 to the n-th sampling transistor Mn conducting and cut-off are by first
Clock signal CLK is controlled, and when the first sampling transistor M1 to the n-th sampling transistor Mn conducting, the multiple sample circuit is opened
Begin to sample the initialization voltage in multiple regions of the display unit 10, the first sampling transistor M1 to n-th is adopted
Sample transistor Mn exports multiple sampled signals (RF_1 to RF_n), and described first compares and compare and amplify to n-th with amplifier X1
Device Xn receives the multiple sampled signal (RF_1 to RF_n) respectively, and by the multiple sampled signal (RF_1 to RF_n) its with
One reference voltage is compared, and obtains corresponding voltage difference si.
In the present embodiment, first that the first output end of the initialization voltage generation and adjustment circuit 20 is exported is initial
Voltage on the basis of change voltage (VRFE_1).The first of first sample circuit is compared the first sampled signal (RF_1) with amplifier X1
Compared with reference voltage (VRFE_1), obtain first voltage difference signal and amplified, while the second sample circuit
Second compare with amplifier X2 by the second sampled signal (RF_2) compared with reference voltage (VRFE_1), obtain second voltage
Difference signal is simultaneously amplified, and by that analogy, the n-th of the n-th sample circuit compares the n-th sampled signal (RF_n) with amplifier Xn
Compared with reference voltage (VRFE_1), obtain the n-th voltage difference si and amplified.
The first voltage difference signal to the n-th voltage difference si passes through analog-to-digital conversion respectively after zooming, so as to
Form corresponding control signal.The initialization voltage produces and multiple inputs of adjustment circuit 20 receive corresponding control respectively
Signal processed, and the initialization voltage of respective regions is adjusted and (is raised and lowered) according to the control signal so that it is multiple
The initialization voltage in region can be consistent.
In other embodiments, other output ends institute of the initialization voltage generation and adjustment circuit 20 can be selected defeated
Voltage on the basis of the initialization voltage gone out, if by second compare with amplifier X2 the second input (-) be changed to it is equal with it is described
Initialization voltage produces and the connection of the corresponding output end of adjustment circuit 20.
Accordingly, present invention also offers a kind of initialization voltage method of adjustment of active matrix/organic light emitting display.
Fig. 2 is refer to, it is the flow of the initialization voltage method of adjustment of the active matrix/organic light emitting display of the embodiment of the present invention
Figure.As shown in Fig. 2 the initialization voltage method of adjustment of the active matrix/organic light emitting display includes：
Step 1：Produced by initialization voltage and adjustment circuit is exported and preset just respectively to multiple regions of display unit
Beginningization voltage；
Step 2：The initialization voltage in the multiple region is sampled using multiple sample circuits；
Step 3：The initialization voltage in the multiple region is adjusted according to sampled result.
Specifically, first, as shown in figure 1, being produced by initialization voltage and adjustment circuit 20 is to the more of display unit 10
Individual region exports default initialization voltage (VREF_1 to VREF_n) respectively.Wherein, initialization voltage (VREF_1) is set to benchmark
Voltage.
Then, as shown in figure 1, being sampled using multiple sample circuits to the initialization voltage in the multiple region.Profit
The detailed process sampled with multiple sample circuits to the initialization voltage in the multiple region includes：
First, multiple sampling transistors (M1 to Mn) are opened so that the multiple sampling transistor (M1 to Mn) is according to institute
The default initialization voltage (VREF_1 to VREF_n) for stating multiple regions exports multiple sampled signals (RF_1 to RF_n) respectively；
Afterwards, compare using the 1st and compare the multiple sampled signal (RF_1 with amplifier X1 to n-th with amplifier Xn
To RF_n) compared with a reference voltage (VREF_1), obtaining multiple voltage difference sis, (i.e. first voltage difference signal is extremely
N-th voltage difference si)；
Hereafter, continue with the 1st and compare to compare with amplifier X1 to n-th and believe the multiple voltage difference with amplifier Xn
Number (i.e. first voltage difference signal to the n-th voltage difference si) is amplified processing；
Then, using the first analog-digital converter U1 to analog-digital converter Un respectively to multiple voltage difference sis after amplification
(i.e. first voltage difference signal to the n-th voltage difference si) carries out analog-to-digital conversion, so as to form multiple control signal (i.e. first
Control signal is to the n-th control signal).
After completing sampling, the initialization voltage produces and adjustment circuit 20 receives the multiple control signal, and root
The initialization voltage in the multiple region is adjusted respectively according to the multiple control signal, to ensure to be output to multiple regions
Initialization voltage can be consistent.
To sum up, in active matrix/organic light emitting display provided by the invention and its initialization voltage method of adjustment, adopt
With multichannel input and multi-point sampling feedback system, the initialization voltage of regional in control display unit so that Ge Gequ
The initialization voltage in domain is consistent, and influences display quality so as to avoid initialization voltage from fluctuating.
Foregoing description is only the description to present pre-ferred embodiments, not to any restriction of the scope of the invention, this hair
Any change, the modification that the those of ordinary skill in bright field does according to the disclosure above content, belong to the protection of claims
Scope.
Claims (10)
- A kind of 1. active matrix/organic light emitting display, it is characterised in that including：Display unit, initialization voltage are produced and adjusted Whole circuit and multiple sample circuits；The display unit is divided into multiple regions, and the multiple sample circuit is used for described more The initialization voltage in individual region is sampled, and the initialization voltage produces and adjustment circuit is used to export to the multiple region Initialization voltage, and the sampled signal provided according to the multiple sample circuit adjusts the initialization voltage.
- 2. active matrix/organic light emitting display as claimed in claim 1, it is characterised in that the initialization voltage produce and Adjustment circuit includes multiple inputs and multiple output ends；The output end of the multiple input and the multiple sample circuit connects Connect, for receiving the sampled signal of the multiple sample circuit output；The multiple output end is multiple with the display unit Region connects, for exporting initialization voltage to the multiple region.
- 3. active matrix/organic light emitting display as claimed in claim 1, it is characterised in that the display unit is divided into more Individual region.
- 4. active matrix/organic light emitting display as claimed in claim 3, it is characterised in that the display unit has multiple Pixel, the multiple pixel arrange in array way, and the areal of the display unit decile is equal to the line number of the pixel.
- 5. active matrix/organic light emitting display as claimed in claim 1, it is characterised in that each sample circuit includes one Sampling transistor, one compare is arranged at the sampling transistor with amplifier and an analog-digital converter, the comparison and amplifier Between analog-digital converter, the sampling transistor is used for the output for controlling the sampled signal, and the comparison and amplifier are used In the sampled signal is compared and amplified, the analog-digital converter is used to carry out analog-to-digital conversion to the sampled signal.
- 6. active matrix/organic light emitting display as claimed in claim 5, it is characterised in that the comparison and amplifier have First input end, the second input and compare amplification output end, the drain electrode of the first input end and the sampling transistor connects Connect, second input is produced with the initialization voltage and the first output end of adjustment circuit is connected, described relatively to amplify Output end is connected with the input of the analog-digital converter, and the output end of the analog-digital converter produces with the initialization voltage And the input connection of adjustment circuit, the source electrode of the sampling transistor and the initialization voltage produce and adjustment circuit One output end is connected, and the grid of the sampling transistor is connected with clock cable.
- 7. active matrix/organic light emitting display as claimed in claim 5, it is characterised in that the sample circuit also includes one Capacitor, one end of the capacitor are connected with the drain electrode of the sampling transistor, the other end ground connection of the capacitor.
- 8. active matrix/organic light emitting display as claimed in claim 5, it is characterised in that the sampling transistor is arranged at In the display unit.
- A kind of 9. initialization voltage method of adjustment of active matrix/organic light emitting display, it is characterised in that including：Produced by initialization voltage and adjustment circuit exports default initialization voltage respectively to multiple regions of display unit；The initialization voltage in the multiple region is sampled using multiple sample circuits；AndThe initialization voltage in the multiple region is adjusted according to sampled result.
- 10. the initialization voltage method of adjustment of active matrix/organic light emitting display as claimed in claim 9, its feature exist In the detailed process sampled using multiple sample circuits to the initialization voltage in the multiple region is included：Open multiple sampling transistors so that the multiple sampling transistor is according to the default initialization voltage in the multiple region Multiple sampled signals are exported respectively；By the multiple sampled signal compared with a reference voltage, to obtain multiple voltage difference sis；The multiple voltage difference si is amplified；AndMultiple voltage difference sis after amplification are subjected to analog-to-digital conversion, to form multiple control signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610817861.8A CN107818757A (en) | 2016-09-12 | 2016-09-12 | Active matrix/organic light emitting display and its initialization voltage method of adjustment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610817861.8A CN107818757A (en) | 2016-09-12 | 2016-09-12 | Active matrix/organic light emitting display and its initialization voltage method of adjustment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107818757A true CN107818757A (en) | 2018-03-20 |
Family
ID=61600662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610817861.8A Pending CN107818757A (en) | 2016-09-12 | 2016-09-12 | Active matrix/organic light emitting display and its initialization voltage method of adjustment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107818757A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109147667A (en) * | 2018-09-21 | 2019-01-04 | 京东方科技集团股份有限公司 | Voltage compensating device and method, array substrate, display device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050259054A1 (en) * | 2003-04-14 | 2005-11-24 | Jie-Farn Wu | Method of driving organic light emitting diode |
| CN101976546A (en) * | 2010-10-19 | 2011-02-16 | 友达光电股份有限公司 | Pixel circuits with power voltage drop compensation functions and luminous panel |
| CN102842295A (en) * | 2012-08-15 | 2012-12-26 | 京东方科技集团股份有限公司 | Common electrode Vcom voltage regulation method and device |
| CN104700768A (en) * | 2015-04-03 | 2015-06-10 | 京东方科技集团股份有限公司 | Common voltage compensation circuit, common voltage compensation method and display device |
| CN105405403A (en) * | 2015-12-30 | 2016-03-16 | 昆山国显光电有限公司 | GIP circuit high supply voltage real-time monitoring and regulating circuit |
-
2016
- 2016-09-12 CN CN201610817861.8A patent/CN107818757A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050259054A1 (en) * | 2003-04-14 | 2005-11-24 | Jie-Farn Wu | Method of driving organic light emitting diode |
| CN101976546A (en) * | 2010-10-19 | 2011-02-16 | 友达光电股份有限公司 | Pixel circuits with power voltage drop compensation functions and luminous panel |
| CN102842295A (en) * | 2012-08-15 | 2012-12-26 | 京东方科技集团股份有限公司 | Common electrode Vcom voltage regulation method and device |
| CN104700768A (en) * | 2015-04-03 | 2015-06-10 | 京东方科技集团股份有限公司 | Common voltage compensation circuit, common voltage compensation method and display device |
| CN105405403A (en) * | 2015-12-30 | 2016-03-16 | 昆山国显光电有限公司 | GIP circuit high supply voltage real-time monitoring and regulating circuit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109147667A (en) * | 2018-09-21 | 2019-01-04 | 京东方科技集团股份有限公司 | Voltage compensating device and method, array substrate, display device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105719607B (en) | Source drive, the display device with the Source drive and its driving method | |
| CN104036722B (en) | Pixel unit drive circuit and driving method, display device | |
| US10297214B2 (en) | High resolution demultiplexer driver circuit | |
| CN105741735B (en) | Data control circuit and panel display apparatus comprising the data control circuit | |
| CN105551445B (en) | Gamma voltage generative circuit and liquid crystal display device including it | |
| CN105807518B (en) | Liquid crystal display panel | |
| WO2018192248A1 (en) | Liquid crystal display device and driving method therefor | |
| CN105609029B (en) | Sense the system and AMOLED display device of AMOLED pixel driver characteristic | |
| CN103745685B (en) | Active matric organic LED panel driving circuit and driving method | |
| TWI585734B (en) | Gamma voltage adjustment circuit and method for driving wafers and active matrix organic light emitting display | |
| US20180329546A1 (en) | Touch display panel, a driving method thereof, and touch display device | |
| US20170083163A1 (en) | Touch display circuit and driving method thereof, display apparatus | |
| CN1808552A (en) | Display device and apparatus for driving the same | |
| US10885851B2 (en) | AMOLED display panel and image display device | |
| US11741888B2 (en) | LED display device, driving method and chip thereof | |
| US11488522B2 (en) | Display substrate and method for driving the same and display device | |
| WO2019037503A1 (en) | Pixel structure and manufacturing method and driving method therefor, and display apparatus | |
| US20130082912A1 (en) | Display Drives Circuits and Techniques | |
| US10354607B2 (en) | Clock and signal distribution circuitry for displays | |
| US7319446B2 (en) | Organic electroluminescent display device and driving method thereof | |
| US11790829B1 (en) | Data driving circuit and display panel | |
| WO2018153290A1 (en) | Display panel driving method and display panel | |
| US10249257B2 (en) | Display device and drive method of the display device | |
| CN107818757A (en) | Active matrix/organic light emitting display and its initialization voltage method of adjustment | |
| US20180356699A1 (en) | Array substrate and liquid crystal display panel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180320 |
|
| RJ01 | Rejection of invention patent application after publication |