CN107610653A - A kind of pixel cell and the display panel for including it - Google Patents
A kind of pixel cell and the display panel for including it Download PDFInfo
- Publication number
- CN107610653A CN107610653A CN201711038468.XA CN201711038468A CN107610653A CN 107610653 A CN107610653 A CN 107610653A CN 201711038468 A CN201711038468 A CN 201711038468A CN 107610653 A CN107610653 A CN 107610653A
- Authority
- CN
- China
- Prior art keywords
- transistor
- luminescence unit
- control signal
- grid
- receiving
- 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
Abstract
The present invention includes the first transistor, second transistor, the first luminescence unit, the second luminescence unit, third transistor and the 4th transistor on a kind of pixel cell and the display panel for including it, pixel cell.The first transistor, which has, to be received the first pole of data-signal, receives the grid of scanning signal and the second pole of output control voltage；Second transistor, which has, to be used for receiving the grid of control voltage and is electrically connected other the two poles of the earth of the anode of first luminescence unit and the negative electrode of the second luminescence unit, the anode of second luminescence unit receives the first supply voltage, the negative electrode electrical connection second source voltage of the first luminescence unit；Third transistor has the grid for receiving the first control signal and is electrically connected the anode of the first luminescence unit and other the two poles of the earth of negative electrode；4th transistor has the grid for receiving the second control signal and is electrically connected the anode of second luminescence unit and other the two poles of the earth of negative electrode, wherein, the second control signal and disabled during the first control signal difference.
Description
Technical field
The present invention relates to a kind of pixel cell and the display panel for including it, more particularly to one kind to improve " terrible point " phenomenon
Pixel cell and the display panel for including it.
Background technology
Organic light emitting diode display (OLED) with the advantages that its light, thin, bright in luster, wide viewing angle, high-contrast by
Gradually turn into one of flat-panel monitor with the fastest developing speed.Organic light emitting diode display is shown using luminous organic material
Image, brightness is changed according to the electric current or voltage swing put on the luminous organic material, to realize different GTGs
Display.
With the raising of market demands, the sight of user has gradually been stepped into double-sided display or stereoscopic display, accordingly, it is capable to
Enough realize concern and demand of the organic light emitting diode display of double-sided display or stereoscopic display increasingly by market.Figure
1 is the schematic diagram for having two-sided or three-dimensional display function pixel cell in the prior art.Fig. 1 is refer to, pixel cell 100 wraps
Include the first transistor T1, second transistor T2, the first electric capacity C1, third transistor T3, the 4th transistor T4, the first luminescence unit
LED1 and the second luminescence unit LED2.The first transistor T1 receives data-signal Data and scanning signal S1 to be believed with output control
Number, second transistor T2 according to above-mentioned control signal and the first supply voltage OVDD with output driving current, and the 3rd crystal
Pipe T3, the 4th transistor T4 decide whether input driving electricity according to the first control signal EM1, the second control signal EM2 respectively
The first luminescence unit LED1 and the second luminescence unit LED2 is flow to, so as to carry out the first luminescence unit LED1 and the second luminescence unit
LED2 independent control, and then realize two-sided or three-dimensional display function.
But as shown in figure 1, when the 4th transistor T4 is closed, third transistor T3 is opened, and is intended to realize the first luminescence unit
LED1 extinguishes, the second luminescence unit LED2 is when lighting, the first luminescence unit LED1 electric capacity can store a small number of remnants electricity from
First luminescence unit LED1 discharges, and so as to cause what the first luminescence unit LED1 made a mistake to light, i.e., it is so-called to occur
" terrible point " phenomenon.
The content of the invention
To improve above-mentioned " terrible point " phenomenon, the present invention provides a kind of pixel cell.
Above-mentioned pixel cell includes：
The first transistor, the first transistor have the first pole for being used for receiving data-signal, for receiving scanning signal
Grid and the second pole for output control voltage；
Second transistor, the second transistor have be used for receive the first supply voltage the 3rd pole, electrically connect this second
Pole simultaneously is used for receiving the grid of the control voltage and for output driving current and the quadrupole of driving voltage；
First electric capacity, first electric capacity are electrically connected to the grid of the second transistor and the 3rd pole of the second transistor
Between；
Third transistor, the first luminescence unit, the third transistor have the grid and difference for receiving the first control signal
Electrically connect the quadrupole of the second transistor and other the two poles of the earth of the first luminescence unit anode, the moon of first luminescence unit
Pole receives second source voltage；
4th transistor, the second luminescence unit, the 4th transistor have the grid and difference for receiving the second control signal
Electrically connect the quadrupole of the second transistor and other the two poles of the earth of the second luminescence unit anode, the moon of second luminescence unit
Pole receives second source voltage, wherein, second control signal and enable during the first control signal difference；And
5th transistor, the 6th transistor, the 5th transistor have the grid for receiving the second control signal and difference electricity
The anode of first luminescence unit and other the two poles of the earth of negative electrode are connected, the 6th transistor has the grid for receiving the first control signal
Pole and it is electrically connected the anode of second luminescence unit and other the two poles of the earth of negative electrode.
As optional technical scheme, the pixel cell also includes：
7th transistor, the 3rd luminescence unit, the 7th transistor have the grid and difference for receiving the 3rd control signal
Electrically connect other the two poles of the earth of the 3rd luminescence unit anode and the quadrupole of the second transistor, the moon of the 3rd luminescence unit
Pole receives the second source voltage；
8th transistor, the 4th luminescence unit, the 8th transistor have the grid and difference for receiving the 4th control signal
Electrically connect other the two poles of the earth of the 4th luminescence unit anode and the quadrupole of the second transistor, the 4th luminescence unit negative electrode
The second source voltage is received, wherein, first control signal, second control signal, the 3rd control signal and the 4th
Control signal only one signal enable in the same period；And
9th transistor, the tenth transistor, the 9th transistor have the grid and difference for receiving the 4th control signal
The anode of the 3rd luminescence unit and other the two poles of the earth of negative electrode are electrically connected, the tenth transistor, which has, receives the first control signal
Grid and the anode of the 4th luminescence unit and other the two poles of the earth of negative electrode are electrically connected, wherein, the grid of the 6th transistor
It is changed to receive the 3rd control signal by receiving first control signal.
The present invention also provides a kind of pixel cell, and the pixel cell includes：
The first transistor, the first transistor have the first pole for being used for receiving data-signal, for receiving scanning signal
Grid and the second pole for output control voltage；
Second transistor, the first luminescence unit, the second luminescence unit, the second transistor, which has, to be used for receiving control electricity
The grid of pressure and other the two poles of the earth for being electrically connected the anode of first luminescence unit and the negative electrode of second luminescence unit, this
The anode of two luminescence units receives the first supply voltage, the negative electrode electrical connection second source voltage of first luminescence unit；
Third transistor, the third transistor have the grid for receiving the first control signal and are electrically connected first hair
The anode of light unit and other the two poles of the earth of negative electrode；And
4th transistor, the 4th transistor have the grid for receiving the second control signal and are electrically connected second hair
The anode of light unit and other the two poles of the earth of negative electrode, wherein, second control signal and disabled during the first control signal difference.
As optional technical scheme, the pixel cell also includes：
3rd luminescence unit, the 4th luminescence unit, the 3rd luminescence unit be arranged at first luminescence unit with this second
Between transistor, the negative electrode of the 3rd luminescence unit electrically connects the anode of first luminescence unit, the sun of the 3rd luminescence unit
Pole electrically connects the quadrupole of the second transistor, and the 4th luminescence unit is arranged at second luminescence unit and second crystal
Between pipe, the anode of the 4th luminescence unit electrically connects the negative electrode of second luminescence unit, the negative electrode electricity of the 4th luminescence unit
Connect the quadrupole of the second transistor；
7th transistor, the 7th transistor have the grid for receiving the 3rd control signal and are electrically connected the 3rd hair
Other the two poles of the earth of light unit anode and negative electrode；
8th transistor, the 8th transistor have the grid for receiving the 4th control signal and are electrically connected the 4th hair
Other the two poles of the earth of light unit anode and negative electrode, wherein, first control signal, second control signal, the 3rd control signal
And the 4th control signal in same period only one signal disabled.
The present invention also provides a kind of pixel cell, and the pixel cell includes：
The first transistor, the first transistor have the first pole for being used for receiving data-signal, for receiving scanning signal
Grid and the second pole for output control voltage；
Second transistor, the first luminescence unit, the second luminescence unit, the second transistor, which has, to be used for receiving control electricity
The grid of pressure and other the two poles of the earth for being electrically connected the anode of first luminescence unit and the negative electrode of second luminescence unit, this
The anode of two luminescence units receives the first supply voltage, the negative electrode electrical connection second source voltage of first luminescence unit；
Third transistor, the third transistor have the grid for receiving the first control signal and are electrically connected first hair
The anode of light unit and other the two poles of the earth for receiving detection voltage, the detection voltage are used for the external compensation of the pixel cell；And
4th transistor, the 4th transistor have the grid for receiving the second control signal and are electrically connected second hair
The negative electrode of light unit and other the two poles of the earth for receiving the detection voltage, wherein, second control signal and first control signal are not
Disabled simultaneously.
The present invention also provides a kind of pixel cell, and the pixel cell includes：
The first transistor, the first transistor have the first pole for being used for receiving data-signal, for receiving scanning signal
Grid and the second pole for output control voltage；
Second transistor, the first luminescence unit, the second luminescence unit, the second transistor, which has, to be used for receiving control electricity
The grid of pressure and other the two poles of the earth for being electrically connected the anode of first luminescence unit and the negative electrode of second luminescence unit, this
The anode of two luminescence units receives the first supply voltage, the negative electrode electrical connection second source voltage of first luminescence unit；
Third transistor, the third transistor have the grid for receiving the first control signal and are electrically connected first hair
The anode of light unit and other the two poles of the earth for receiving detection voltage, the detection voltage are used for the external compensation of the pixel cell；And
4th transistor, the 4th transistor have the grid for receiving the second control signal and are electrically connected second hair
The negative electrode of light unit and other the two poles of the earth of anode, wherein, second control signal and disabled during the first control signal difference.
As optional technical scheme, the pixel cell also includes：
First electric capacity, one end of first electric capacity electrically connect the grid of the second transistor, the other end of first electric capacity
Electrically connect the anode of first luminescence unit, or the other end of first electric capacity electrically connects the negative electrode of first luminescence unit,
Either the other end of first electric capacity electrically connects the other end electrical connection of the anode or first electric capacity of second luminescence unit
The negative electrode of second luminescence unit.
As optional technical scheme, first luminescence unit is identical with the light direction of second luminescence unit or phase
Instead.
As optional technical scheme, all transistors in the pixel cell are NMOS FETs or are
PMOS FETs.
The present invention also provides a kind of display panel, and the display panel includes above-mentioned pixel cell.
Compared to prior art, pixel cell of the invention is carried out multiple respectively by way of setting multiple transistors
The electric capacity electric discharge of luminescence unit, so as to prevent the situation of erroneous point brighten the hair light unit from occurring, can avoid the generation of " terrible point " phenomenon.
Below in conjunction with the drawings and specific embodiments, the present invention will be described in detail, but not as a limitation of the invention.
Brief description of the drawings
Fig. 1 is the schematic diagram for having in the prior art two-sided or three-dimensional display function pixel cell；
Fig. 2A is the schematic diagram of an embodiment of present invention pixel unit；
Fig. 2 B are partial timing diagram of pixel cell when using in Fig. 2A；
Fig. 2 C be Fig. 2 B in the first period pixel cell schematic diagram；
Fig. 2 D be Fig. 2 B in the second period pixel cell schematic diagram；
Fig. 3 A are the schematic diagram of another embodiment of present invention pixel unit；
Fig. 3 B are partial timing diagram of pixel cell when using in Fig. 3 A；
Fig. 4 A are the schematic diagram of another embodiment of present invention pixel unit；
Fig. 4 B are partial timing diagram of pixel cell when using in Fig. 4 A；
Fig. 5 A are the schematic diagram of another embodiment of present invention pixel unit；
Fig. 5 B are partial timing diagram of pixel cell when using in Fig. 5 A；
Fig. 6 is the schematic diagram of another embodiment of present invention pixel unit；
Fig. 7 is the schematic diagram of another embodiment of present invention pixel unit.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention will be described in detail, but not as a limitation of the invention.
Fig. 2A is the schematic diagram of an embodiment of present invention pixel unit.Fig. 2A is refer to, pixel cell 200 includes first
Transistor T1, second transistor T2, third transistor T3, the 4th transistor T4, the 5th transistor T5, the 6th transistor T6,
One electric capacity C1, the first luminescence unit LED1 and the second luminescence unit LED2.The first transistor T1, which has, to be used for receiving data-signal
Data the first pole (not shown), for receiving scanning signal S1 grid and (do not marked for the second pole of output control signal
Go out).Second transistor T2 has the 3rd pole (not shown), the electrical connection the first transistor for being used for receiving the first supply voltage OVDD
T1 the second pole is simultaneously used for receiving the grid of control signal and (not marked for the quadrupole of output driving current and driving voltage
Go out).First electric capacity C1 is electrically connected between second transistor T2 grid and second transistor T2 the 3rd pole.
Third transistor T3 has the grid for receiving the first control signal EM1 and be electrically connected second transistor T2 the
Other the two poles of the earth of quadrupole and the first luminescence unit LED1 anodes, the first luminescence unit LED1 negative electrode receive second source voltage
OVSS.4th transistor T4 has the grid for receiving the second control signal EM2 and is electrically connected the 4th of second transistor T2
Pole and other the two poles of the earth of the second luminescence unit LED2 anodes, the second luminescence unit LED2 negative electrode receive second source voltage
OVSS.5th transistor T5 has the grid for receiving the second control signal EM2 and is electrically connected the first luminescence unit LED1's
Other of anode and negative electrode the two poles of the earth, the 6th transistor T6 have the grid for receiving the first control signal EM1 and are electrically connected the
Two luminescence unit LED2 anode and other the two poles of the earth of negative electrode.Wherein, the second control signal EM2 and the first control signal EM1 be not
Enable simultaneously, i.e. open when third transistor T3, the 5th transistor T5 differences, the 4th transistor T4 is different from the 6th transistor T6
When open, with prevent need the first luminescence unit LED1 or the second luminescence unit LED2 light when, the first luminescence unit
LED1 or the second luminescence unit LED2 are short-circuited.In the present embodiment, the first control signal EM1 and the second control signal EM2
For inversion signal.
Fig. 2 B are partial timing diagram of pixel cell when using in Fig. 2A, and Fig. 2 C are in the pixel of the first period in Fig. 2 B
The schematic diagram of unit.Fig. 2 B to Fig. 2 C are refer to, in the first period time1 (being, for example, scanning signal S1 a cycle),
First control signal EM1 is constantly in the state of enable, and the second control signal EM2 is constantly in the state of disabled, such as Fig. 2 C
Shown, third transistor T3, the 6th transistor T6 closure, the 4th transistor T4, the 5th transistor T5 are opened, in this way, the second hair
The electricity stored on light unit LED2 electric capacity can be discharged by the 6th transistor T6, so that will not be in the first luminescence unit LED1
Mistake lights the second luminescence unit LED2 while lighting.
Fig. 2 D be Fig. 2 B in the second period pixel cell schematic diagram.Please with reference to Fig. 2 B, Fig. 2 D, when second
In section time2 (being, for example, scanning signal S1 a cycle), the first control signal EM1 is constantly in the state of disabled, the
Two control signal EM2 are constantly in the state of enable, and as shown in Figure 2 D, third transistor T3, the 6th transistor T6 are opened, and the 4th
Transistor T4, the 5th transistor T5 are closed, in this way, the electricity stored on the first luminescence unit LED1 electric capacity can be brilliant by the 5th
Body pipe T5 discharges, so as to mistake light the first luminescence unit LED1 while the second luminescence unit LED2 is lighted.Also
It is to say, pixel cell 200 can be while some luminescence unit be lighted, and another luminescence unit lighted to a upper period enters
Row electric capacity discharges, so as to avoid the generation of " terrible point " phenomenon.
In this way, pixel cell 200 is lighted by setting the 5th transistor T5 and the 6th transistor T6 to carry out first respectively
The luminescence unit LED2 of unit LEDs 1 and second electric capacity electric discharge, so as to prevent the situation of erroneous point brighten the hair light unit from occurring, to keep away
Exempt from the generation of " terrible point " phenomenon.
In above-described embodiment, pixel cell 200 includes the first luminescence unit LED1 and the second luminescence unit LED2, Yu Qi
In his embodiment, to improve resolution, it can also increase multiple luminescence units in pixel cell 200.Such as this hair shown in Fig. 3 A
Another embodiment of bright pixel cell, compared to pixel cell 200, pixel cell 300 adds two luminescence units：3rd hair
Light unit LED3 and the 4th luminescence unit LED4, and in order to meet the 3rd luminescence unit LED3's and the 4th luminescence unit LED4
Light control and electric capacity electric discharge, pixel cell 300 also add the 7th transistor T7, the 8th transistor T8, the 9th transistor T9
And the tenth transistor T10.7th transistor T7, which has the grid for receiving the 3rd control signal EM3 and is electrically connected the 3rd, to light
Other the two poles of the earth of the anode of unit LEDs 3 and second transistor T2 quadrupole, the 3rd luminescence unit LED3 negative electrode receive the second electricity
Source voltage OVSS, the 8th transistor T8 have the grid for receiving the 4th control signal EM4 and are electrically connected the 4th luminescence unit
Other the two poles of the earth of LED4 anodes and second transistor T2 quadrupole, the 4th luminescence unit LED4 negative electrodes receive second source voltage
OVSS, the 9th transistor T9 have the grid for receiving the 4th control signal EM4 and are electrically connected the 3rd luminescence unit LED3's
Other of anode and negative electrode the two poles of the earth, the tenth transistor T10 have the grid for receiving the first control signal EM1 and are electrically connected the
Four luminescence unit LED4 anode and other the two poles of the earth of negative electrode, wherein, the 6th transistor T6 grid is believed by receiving the first control
Number EM1 is changed to receive the 3rd control signal EM3, wherein, the first control signal EM1, the second control signal EM2, the 3rd control letter
Number EM3 and the 4th control signal EM4 only ones in the same period are in the state of enable.
Fig. 3 B are partial timing diagram of pixel cell when using in Fig. 3 A.Fig. 3 A, Fig. 3 B are refer to, in the first period
In time1 (being, for example, scanning signal S1 a cycle), the first control signal EM1 is constantly in the state of enable, the second control
Signal EM2, the 3rd control signal EM3 and the 4th control signal EM4 processed are constantly in the state of disabled, third transistor T3,
Tenth transistor T10 is closed, the 4th transistor T4, the 5th transistor T5, the 6th transistor T6, the 7th transistor T7, the 8th crystalline substance
Body pipe T8 and the 9th transistor T9 are opened, in this way, the electricity stored on the 4th luminescence unit LED4 electric capacity can be by the tenth
Transistor T10 discharges, so as to mistake light the 4th luminescence unit LED4 while the first luminescence unit LED1 is lighted.Together
Sample, in the second period time2, the second control signal EM2 is constantly in the state of enable, the first control signal EM1, the 3rd control
Signal EM3 and the 4th control signal EM4 processed are constantly in the state of disabled, and the 4th transistor T4, the 5th transistor T5 are closed,
Third transistor T3, the 6th transistor T6, the 7th transistor T7, the 8th transistor T8, the 9th transistor T9 and the tenth transistor
T10 is opened, in this way, the electricity stored on the first luminescence unit LED1 electric capacity can be discharged by the 5th transistor T5, so as to
Mistake the first luminescence unit LED1 will not be lighted while the second luminescence unit LED2 is lighted.In turn, in the 3rd period
In Time3, the electricity stored on the second luminescence unit LED2 electric capacity can be discharged by the 6th transistor T6, so as to will not be the
Mistake lights the second luminescence unit LED2 while three luminescence unit LED3 are lighted；In the 4th period Time4, the 3rd is luminous single
The electricity stored on first LED3 electric capacity can be discharged by the 9th transistor T9, so as to be lighted in the 4th luminescence unit LED4
While mistake light the 3rd luminescence unit LED3, that is to say, that pixel cell 300 can light the same of some luminescence unit
When, another luminescence unit lighted to a upper period carries out electric capacity electric discharge, so as to avoid the generation of " terrible point " phenomenon.
In above-described embodiment, pixel cell 200 or pixel cell 300 are come complete by way of increasing transistor
Electric capacity into luminescence unit discharges, and certainly, in other embodiment, can need not also increase the quantity of transistor, remain to reach hair
The purpose of light unit electric capacity electric discharge.
Fig. 4 A are the schematic diagram of another embodiment of present invention pixel unit.It refer to Fig. 4 A, pixel cell 400 includes the
One transistor T1, second transistor T2, the first luminescence unit LED1, the second luminescence unit LED2, third transistor T3 and the 4th
Transistor T4.The first transistor T1 has the first pole (not shown) for being used for receiving data-signal Data, believed for receiving scanning
Number S1 grid and the second pole (not shown) for output control voltage.Second transistor T2, which has, to be used for receiving control voltage
Grid and be electrically connected other the two poles of the earth of the first luminescence unit LED1 anode and the second luminescence unit LED2 negative electrode,
Two luminescence unit LED2 anode receives the first supply voltage OVDD, the first luminescence unit LED1 negative electrode electrical connection second source
Voltage OVSS.Third transistor T3 has the grid for receiving the first control signal EM1 and is electrically connected first luminescence unit
LED1 anode and other the two poles of the earth of negative electrode, the 4th transistor T4 have the grid for receiving the second control signal EM2 and difference electricity
Connect the second luminescence unit LED2 anode and other the two poles of the earth of negative electrode.Wherein, the first control signal EM1, the second control signal
Disabled during EM2 differences.
Fig. 4 B are partial timing diagram of pixel cell when using in Fig. 4 A.Please with reference to Fig. 4 A, Fig. 4 B, when first
In section time1 (being, for example, scanning signal S1 a cycle), the first control signal EM1 is constantly in the state of disabled, the
Two control signal EM2 are constantly in the state of enable, i.e. third transistor T3 is opened, the 4th transistor T4 closures, in this way, first
Luminescence unit LED1 is lit, in addition because the 4th transistor T4 is parallel to the second luminescence unit LED2, in the first period
In time1, the second luminescence unit LED2 can occur short circuit and not be lit, and the electricity stored on the second luminescence unit LED2 electric capacity
Amount can discharge by the 4th transistor T4, so as to will not while the first luminescence unit LED1 is lighted mistake light second light
Unit LEDs 2.Equally, in the second period time2 (being, for example, scanning signal S1 a cycle), the second control signal EM2 mono-
The straight state for being in disabled, the first control signal EM1 are constantly in the state of enable, and third transistor T3 closures, the 4th is brilliant
Body pipe T4 is opened, in this way, the second luminescence unit LED2 is lit, in addition because third transistor T3 is parallel to the first luminescence unit
LED1, so in the second period time2, short circuit, which occurs, for the first luminescence unit LED1 to be lit, and the first luminescence unit
The electricity stored on LED1 electric capacity can be discharged by third transistor T2, so as to what will not be lighted in the second luminescence unit LED1
Mistake lights the first luminescence unit LED1 simultaneously.That is, pixel cell 400 can light the same of some luminescence unit
When, another luminescence unit lighted to a upper period carries out electric capacity electric discharge, so as to avoid the generation of " terrible point " phenomenon.
In this way, pixel cell 400 is parallel to the first luminescence unit LED1 and the second luminescence unit LED2 respectively by setting
Third transistor T3 and the 4th transistor T4, can also carry out one while controlling one of luminescence unit whether to light
The release of the remaining capacity accumulated during period in the electric capacity of another luminescence unit, i.e. pixel cell 400 can be only in control
The generation of " terrible point " phenomenon can also be prevented by standing while lighting.
Certainly, it is increased resolution, pixel cell 400 can also increase multiple luminescence units.Such as the sheet shown in Fig. 5 A
Another embodiment of invention pixel cell, compared to pixel cell 400, pixel cell 500 increase the 3rd luminescence unit LED3 and
4th luminescence unit LED4, correspondingly light control and electricity for control the 3rd luminescence unit LED3 and the 4th luminescence unit LED4
Discharge capacitor, pixel cell 500 also add the 7th transistor T7 and the 8th transistor T8, and the 3rd luminescence unit LED3 is arranged at
Between one luminescence unit LED1 and second transistor T2, the 3rd luminescence unit LED3 negative electrode electrically connects the first luminescence unit LED1
Anode, the 3rd luminescence unit LED3 anode electrical connection second transistor T2 quadrupole, the 4th luminescence unit LED4 sets
Between the second luminescence unit LED2 and second transistor T2, the 4th luminescence unit LED4 anode electrically connects the second luminescence unit
LED2 negative electrode, the 4th luminescence unit LED4 negative electrode electrical connection second transistor T2 quadrupole；7th transistor T7 has
Receive the 3rd control signal EM3 grid and be electrically connected other the two poles of the earth of the 3rd luminescence unit LED3 anodes and negative electrode；The
Eight transistor T8 have the grid for receiving the 4th control signal EM4 and are electrically connected the 4th luminescence unit LED4 anodes and negative electrode
Other the two poles of the earth, wherein, the first control signal EM1, the second control signal EM2, the 3rd control signal EM3 and the 4th control signal
EM4 only ones in the same period are in the state of disabled.
Fig. 5 B are partial timing diagram of pixel cell when using in Fig. 5 A.Please with reference to Fig. 5 A, Fig. 5 B, when first
In section time1 (being, for example, scanning signal S1 a cycle), the first control signal EM1 is constantly in the state of disabled, the
Two control signal EM2, the 3rd control signal EM3, the 4th control signal EM4 are constantly in the state of enable, third transistor T3
Open, the 4th transistor T4, the 7th transistor T7 and the 8th transistor T8 closures, in this way, the first luminescence unit LED1 is lit,
And the second luminescence unit LED2, the 3rd luminescence unit LED3 and the 4th luminescence unit LED4 occur short circuit and will not be lit, and
Second luminescence unit LED2, the 3rd luminescence unit LED3 and the 4th luminescence unit LED4 can be entered by corresponding parallel transistor
Row electric capacity discharges, so as to mistake light other luminescence units while the first luminescence unit LED1 is lighted.Equally, in
In second period time2 (being, for example, scanning signal S1 a cycle), the second control signal EM2 is constantly in the shape of disabled
State, the first control signal EM1, the 3rd control signal EM3 and the 4th control signal EM4 are constantly in the state of enable, and the 4th is brilliant
Body pipe T4 is closed, and third transistor T3, the 7th transistor T7 and the 8th transistor T8 are opened, in this way, the second luminescence unit LED2
Be lit, and the first luminescence unit LED1, the 3rd luminescence unit LED3 and the 4th luminescence unit LED4 short circuit occurs will not be by
Light, and the first luminescence unit LED1, the 3rd luminescence unit LED3 and the 4th luminescence unit LED4 can pass through corresponding parallel connection
Transistor carries out electric capacity electric discharge, so as to mistake light other luminous lists while the second luminescence unit LED2 is lighted
Member.In turn, in the 3rd period Time3, the 3rd luminescence unit LED3 is lit, and the first luminescence unit LED1, the second hair
Short circuit, which occurs, for light unit LED2 and the 4th luminescence unit LED4 to be lit, and the first luminescence unit LED1, second luminous
The luminescence unit LED4 of unit LEDs 2 and the 4th can carry out electric capacity electric discharge by corresponding parallel transistor, so that will not be the 3rd
Mistake lights other luminescence units while luminescence unit LED3 is lighted；In the 4th period Time4, the 4th luminescence unit
LED4 is lit, and short circuit occurs for the first luminescence unit LED1, the second luminescence unit LED2 and the 3rd luminescence unit LED3 not
It can be lit, and the first luminescence unit LED1, the second luminescence unit LED2 and the 3rd luminescence unit LED3 can be by corresponding
Parallel transistor carries out electric capacity electric discharge, so as to mistake light other light while the 4th luminescence unit LED4 is lighted
Unit.
That is, pixel cell 500 can be carried out while some luminescence unit is lighted to other luminescence units
Electric capacity discharges, so as to avoid the generation of " terrible point " phenomenon.
In above-described embodiment, pixel cell 200, pixel cell 300, pixel cell 400, pixel cell 500 are logical
Cross and parallel transistor is set to carry out the electric discharge of the electric capacity of luminescence unit, certainly, in other embodiment, electric capacity electric discharge can also pass through
Other modes are carried out, for example, carry out electric capacity electric discharge using external compensation circuit.
Fig. 6 is the schematic diagram of another embodiment of present invention pixel unit.Fig. 6 is refer to, pixel cell 600 includes first
Transistor T1, second transistor T2, the first luminescence unit LED1, the second luminescence unit LED2, third transistor T3 and the 4th brilliant
Body pipe T4.The first transistor T1 has the first pole (not shown) for being used for receiving data-signal Data, for receiving scanning signal
S1 grid and the second pole (not shown) for output control voltage.Second transistor T2, which has, to be used for receiving control voltage
Grid and other the two poles of the earth for being electrically connected the first luminescence unit LED1 anode and the second luminescence unit LED2 negative electrode, second
Luminescence unit LED2 anode receives the first supply voltage OVDD, the first luminescence unit LED1 negative electrode electrical connection second source electricity
Press OVSS.Third transistor T3 has the grid for receiving the first control signal EM1 and is electrically connected first luminescence unit
LED1 anode and other the two poles of the earth for receiving detection voltage Sensing, detection voltage Sensing are used for the outer of pixel cell 600
Portion compensates.4th transistor T4 has the grid for receiving the second control signal EM2 and is electrically connected the second luminescence unit LED2
Other the two poles of the earth with receiving detection voltage Sensing of negative electrode.In this way, it is similar with the mode of the electric capacity of pixel cell 400 electric discharge, it is poor
The different third transistor T3 for being only that pixel cell 500, the 4th transistor T4 are not parallel to the first luminescence unit LED1 completely
With the second luminescence unit LED2, still, can still be entered by third transistor T3, the 4th transistor T4 by external compensation circuit
Row the first luminescence unit LED1 and the second luminescence unit LED2 electric capacity discharge.
In above-mentioned pixel cell 400, third transistor T3, the 4th transistor T4 are parallel to the first luminescence unit LED1
With the second luminescence unit LED2, and in pixel cell 600, third transistor T3, the 4th transistor T4 are not parallel to
One luminescence unit LED1 and the second luminescence unit LED2, and pixel cell 400 or pixel cell 600 can carry out the first luminous list
First LED1 and the second luminescence unit LED2 electric capacity discharge, so also can be by the 3rd in pixel cell 400 or pixel cell 600
Transistor T3, the 4th transistor T4 do mixing and set, such as another embodiment of the present invention pixel unit shown in Fig. 7, pixel
Unit 700 includes the first transistor T1, second transistor T2, the first luminescence unit LED1, the second luminescence unit LED2, the 3rd crystalline substance
Body pipe T3 and the 4th transistor T4.The first transistor T1 has the first pole (not shown) for being used for receiving data-signal Data, used
To receive scanning signal S1 grid and the second pole (not shown) for output control voltage.Second transistor T2, which has, to be used for
Receive the grid of control voltage and be electrically connected the first luminescence unit LED1 anode and the second luminescence unit LED2 negative electrode
Other the two poles of the earth, the second luminescence unit LED2 anode receives the first supply voltage OVDD, the first luminescence unit LED1 negative electrode
Electrically connect second source voltage OVSS.Third transistor T3 has the grid for receiving the first control signal EM1 and is electrically connected
First luminescence unit LED1 anode and other the two poles of the earth for receiving detection voltage Sensing, detection voltage Sensing are used for picture
The external compensation of plain unit 700.4th transistor T4 has the grid for receiving the second control signal EM2 and is electrically connected second
Luminescence unit LED2 negative electrode and other the two poles of the earth of anode.I.e. in pixel cell 700, third transistor T3 set-up mode class
The mode being similar in pixel cell 600, and the 4th transistor T4 set-up mode is similar to the mode in pixel cell 400, as
It is luminous single that plain unit 700 can still carry out the first luminescence unit LED1 and second by third transistor T3, the 4th transistor T4
First LED2 electric capacity discharges, and the process that electric capacity discharges in pixel cell 700 is similar to the electric capacity electric discharge in pixel cell 400, this
In just repeat no more.
In above-mentioned pixel cell 400, pixel cell 500, pixel cell 600 and pixel cell 700, it may also include
First electric capacity C1, the first electric capacity C1 connected mode can be divided into following four kinds：First electric capacity C1 one end electrically connects the second crystal
Pipe T2 grid, the other end electrically connect the first luminescence unit LED1 anode；Or first electric capacity C1 one end electrical connection second
Transistor T2 grid, the other end electrically connect the first luminescence unit LED1 negative electrode；Or first electric capacity C1 one end electrical connection
Second transistor T2 grid, the other end electrically connect the second luminescence unit LED2 anode；Or first electric capacity C1 one end electricity
Second transistor T2 grid is connected, the other end electrically connects the second luminescence unit LED2 negative electrode.
In above-described embodiment, the first luminescence unit LED1 and the second luminescence unit LED2 light direction can it is identical or
On the contrary, three-dimensional (3D) display is can be applicable to if the first luminescence unit LED1 is identical with the second luminescence unit LED2 light direction
In, it be can be applicable to if the first luminescence unit LED1 is opposite with the second luminescence unit LED2 light direction in double-sided display.When
So, if being further added by more luminescence units, pixel cell can also realize two-sided stereoscopic display, such as the 3rd luminescence unit of increase
LED3 and the 4th luminescence unit LED4, the first luminescence unit LED1, the second luminescence unit LED2, the 3rd luminescence unit LED3 and
Any two luminescence unit in four luminescence unit LED4 is arranged to positive light extraction, and other two luminescence units are arranged to
Back side light extraction, double-sided display so is realized, and again set two luminescence unit stereoscopic displays of identical light direction
Put, you can realize two-sided stereoscopic display.
In above-described embodiment, all transistors are NMOS FETs, certainly, in other embodiment, Suo Youjing
Body pipe also can be PMOS FETs.
The present invention also provides a kind of display panel (not shown), and display panel includes above-mentioned pixel cell 200 to pixel
One or more in 700.
In summary, pixel cell of the invention carries out multiple luminous lists respectively by way of setting multiple transistors
The electric capacity electric discharge of member, so as to prevent the situation of erroneous point brighten the hair light unit from occurring, to avoid the generation of " terrible point " phenomenon.
Certainly, the present invention can also have other various embodiments, ripe in the case of without departing substantially from spirit of the invention and its essence
Various corresponding changes and deformation, but these corresponding changes and deformation can be made according to the present invention by knowing those skilled in the art
The protection domain of appended claims of the invention should all be belonged to.
Claims (10)
1. a kind of pixel cell, it is characterised in that the pixel cell includes：
The first transistor, the first transistor have the first pole for being used for receiving data-signal, for receiving the grid of scanning signal
Pole and the second pole for output control voltage；
Second transistor, the second transistor have the 3rd pole for being used for receiving the first supply voltage, electrically connect second pole simultaneously
For receiving the grid of the control voltage and for output driving current and the quadrupole of driving voltage；
First electric capacity, first electric capacity be electrically connected to the second transistor grid and the second transistor the 3rd pole it
Between；
Third transistor, the first luminescence unit, the third transistor have the grid for receiving the first control signal and are electrically connected respectively
The quadrupole of the second transistor and other the two poles of the earth of the first luminescence unit anode are connect, the negative electrode of first luminescence unit connects
Receive second source voltage；
4th transistor, the second luminescence unit, the 4th transistor have the grid for receiving the second control signal and are electrically connected respectively
The quadrupole of the second transistor and other the two poles of the earth of the second luminescence unit anode are connect, the negative electrode of second luminescence unit connects
Second source voltage is received, wherein, second control signal and enable during the first control signal difference；And
5th transistor, the 6th transistor, the 5th transistor have the grid for receiving the second control signal and are electrically connected
The anode of first luminescence unit and other the two poles of the earth of negative electrode, the 6th transistor have receive the first control signal grid and
It is electrically connected the anode of second luminescence unit and other the two poles of the earth of negative electrode.
2. pixel cell as claimed in claim 1, it is characterised in that the pixel cell also includes：
7th transistor, the 3rd luminescence unit, the 7th transistor have the grid for receiving the 3rd control signal and are electrically connected respectively
Other the two poles of the earth of the 3rd luminescence unit anode and the quadrupole of the second transistor are connect, the negative electrode of the 3rd luminescence unit connects
Receive the second source voltage；
8th transistor, the 4th luminescence unit, the 8th transistor have the grid for receiving the 4th control signal and are electrically connected respectively
Other the two poles of the earth of the 4th luminescence unit anode and the quadrupole of the second transistor are connect, the 4th luminescence unit negative electrode receives
The second source voltage, wherein, first control signal, second control signal, the 3rd control signal and the 4th control
Signal only one signal enable in the same period；And
9th transistor, the tenth transistor, the 9th transistor have the grid for receiving the 4th control signal and are electrically connected respectively
The anode of the 3rd luminescence unit and other the two poles of the earth of negative electrode are connect, the tenth transistor has the grid for receiving the first control signal
And the anode of the 4th luminescence unit and other the two poles of the earth of negative electrode are electrically connected, wherein, the grid of the 6th transistor is by connecing
First control signal is received to be changed to receive the 3rd control signal.
3. a kind of pixel cell, it is characterised in that the pixel cell includes：
The first transistor, the first transistor have the first pole for being used for receiving data-signal, for receiving the grid of scanning signal
Pole and the second pole for output control voltage；
Second transistor, the first luminescence unit, the second luminescence unit, the second transistor, which has, to be used for receiving the control voltage
Grid and other the two poles of the earth for being electrically connected the anode of first luminescence unit and the negative electrode of second luminescence unit, second hair
The anode of light unit receives the first supply voltage, the negative electrode electrical connection second source voltage of first luminescence unit；
Third transistor, the third transistor have the grid for receiving the first control signal and are electrically connected the first luminous list
The anode of member and other the two poles of the earth of negative electrode；And
4th transistor, the 4th transistor have the grid for receiving the second control signal and are electrically connected the second luminous list
The anode of member and other the two poles of the earth of negative electrode, wherein, second control signal and disabled during the first control signal difference.
4. pixel cell as claimed in claim 3, it is characterised in that the pixel cell also includes：
3rd luminescence unit, the 4th luminescence unit, the 3rd luminescence unit are arranged at first luminescence unit and second crystal
Between pipe, the negative electrode of the 3rd luminescence unit electrically connects the anode of first luminescence unit, the anode electricity of the 3rd luminescence unit
Connect the quadrupole of the second transistor, the 4th luminescence unit be arranged at second luminescence unit and the second transistor it
Between, the anode of the 4th luminescence unit electrically connects the negative electrode of second luminescence unit, the negative electrode electrical connection of the 4th luminescence unit
The quadrupole of the second transistor；
7th transistor, the 7th transistor have the grid for receiving the 3rd control signal and are electrically connected the 3rd luminous list
Other the two poles of the earth of first anode and negative electrode；
8th transistor, the 8th transistor have the grid for receiving the 4th control signal and are electrically connected the 4th luminous list
Other the two poles of the earth of first anode and negative electrode, wherein, first control signal, second control signal, the 3rd control signal and should
4th control signal is in same period only one signal disabled.
5. a kind of pixel cell, it is characterised in that the pixel cell includes：
The first transistor, the first transistor have the first pole for being used for receiving data-signal, for receiving the grid of scanning signal
Pole and the second pole for output control voltage；
Second transistor, the first luminescence unit, the second luminescence unit, the second transistor, which has, to be used for receiving the control voltage
Grid and other the two poles of the earth for being electrically connected the anode of first luminescence unit and the negative electrode of second luminescence unit, second hair
The anode of light unit receives the first supply voltage, the negative electrode electrical connection second source voltage of first luminescence unit；
Third transistor, the third transistor have the grid for receiving the first control signal and are electrically connected the first luminous list
The anode of member and other the two poles of the earth for receiving detection voltage, the detection voltage are used for the external compensation of the pixel cell；And
4th transistor, the 4th transistor have the grid for receiving the second control signal and are electrically connected the second luminous list
The negative electrode of member and other the two poles of the earth for receiving the detection voltage, wherein, when second control signal is with the first control signal difference
Disabled.
6. a kind of pixel cell, it is characterised in that the pixel cell includes：
The first transistor, the first transistor have the first pole for being used for receiving data-signal, for receiving the grid of scanning signal
Pole and the second pole for output control voltage；
Second transistor, the first luminescence unit, the second luminescence unit, the second transistor, which has, to be used for receiving the control voltage
Grid and other the two poles of the earth for being electrically connected the anode of first luminescence unit and the negative electrode of second luminescence unit, second hair
The anode of light unit receives the first supply voltage, the negative electrode electrical connection second source voltage of first luminescence unit；
Third transistor, the third transistor have the grid for receiving the first control signal and are electrically connected the first luminous list
The anode of member and other the two poles of the earth for receiving detection voltage, the detection voltage are used for the external compensation of the pixel cell；And
4th transistor, the 4th transistor have the grid for receiving the second control signal and are electrically connected the second luminous list
The negative electrode of member and other the two poles of the earth of anode, wherein, second control signal and disabled during the first control signal difference.
7. such as the pixel cell any one of claim 3-6, it is characterised in that the pixel cell also includes：
First electric capacity, one end of first electric capacity electrically connect the grid of the second transistor, and the other end of first electric capacity is electrically connected
Connect the anode of first luminescence unit, either the other end of first electric capacity electrically connect first luminescence unit negative electrode or
The other end of first electric capacity electrically connects the anode of second luminescence unit, or first electric capacity the other end electrically connect this
The negative electrode of two luminescence units.
8. such as the pixel cell any one of claim 1-7, it is characterised in that first luminescence unit and second hair
The light direction of light unit is identical or opposite.
9. such as the pixel cell any one of claim 1-8, it is characterised in that all transistors in the pixel cell
It is NMOS FETs or is PMOS FETs.
10. a kind of display panel, it is characterised in that the display panel includes any one of claim 1-9 pixel cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711038468.XA CN107610653A (en) | 2017-10-30 | 2017-10-30 | A kind of pixel cell and the display panel for including it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711038468.XA CN107610653A (en) | 2017-10-30 | 2017-10-30 | A kind of pixel cell and the display panel for including it |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107610653A true CN107610653A (en) | 2018-01-19 |
Family
ID=61084462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711038468.XA Pending CN107610653A (en) | 2017-10-30 | 2017-10-30 | A kind of pixel cell and the display panel for including it |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107610653A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108364607A (en) * | 2018-05-25 | 2018-08-03 | 京东方科技集团股份有限公司 | Pixel circuit and its driving method, display device |
| CN108648687A (en) * | 2018-02-23 | 2018-10-12 | 友达光电股份有限公司 | Pixel correction and compensation driving circuit, and pixel correction and compensation method using same |
| CN109979395A (en) * | 2019-04-22 | 2019-07-05 | 深圳市华星光电半导体显示技术有限公司 | Pixel-driving circuit and display panel |
| TWI680445B (en) * | 2018-11-16 | 2019-12-21 | 友達光電股份有限公司 | Driving circuit |
| WO2020169036A1 (en) * | 2019-02-23 | 2020-08-27 | 华为技术有限公司 | Display driving system, display module, display screen driving method, and electronic device |
| TWI706395B (en) * | 2019-01-25 | 2020-10-01 | 友達光電股份有限公司 | Pixel circuit and detection method thereof |
| US11900844B1 (en) | 2022-12-08 | 2024-02-13 | AUO Corporation | Display panel and display device for abnormal detection |
-
2017
- 2017-10-30 CN CN201711038468.XA patent/CN107610653A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108648687A (en) * | 2018-02-23 | 2018-10-12 | 友达光电股份有限公司 | Pixel correction and compensation driving circuit, and pixel correction and compensation method using same |
| CN108648687B (en) * | 2018-02-23 | 2019-11-12 | 友达光电股份有限公司 | Pixel correction and compensation driving circuit, and pixel correction and compensation method using same |
| CN108364607A (en) * | 2018-05-25 | 2018-08-03 | 京东方科技集团股份有限公司 | Pixel circuit and its driving method, display device |
| CN108364607B (en) * | 2018-05-25 | 2020-01-17 | 京东方科技集团股份有限公司 | Pixel circuit, driving method thereof and display device |
| US10991307B2 (en) | 2018-05-25 | 2021-04-27 | Beijing Boe Display Technology Co., Ltd. | Pixel circuit and driving method thereof, display device |
| TWI680445B (en) * | 2018-11-16 | 2019-12-21 | 友達光電股份有限公司 | Driving circuit |
| TWI706395B (en) * | 2019-01-25 | 2020-10-01 | 友達光電股份有限公司 | Pixel circuit and detection method thereof |
| WO2020169036A1 (en) * | 2019-02-23 | 2020-08-27 | 华为技术有限公司 | Display driving system, display module, display screen driving method, and electronic device |
| US11508277B2 (en) | 2019-02-23 | 2022-11-22 | Huawei Technologies Co., Ltd. | Display driving system, display module, method for driving display screen, and electronic device |
| CN109979395A (en) * | 2019-04-22 | 2019-07-05 | 深圳市华星光电半导体显示技术有限公司 | Pixel-driving circuit and display panel |
| CN109979395B (en) * | 2019-04-22 | 2021-09-24 | 深圳市华星光电半导体显示技术有限公司 | Pixel driving circuit and display panel |
| US11900844B1 (en) | 2022-12-08 | 2024-02-13 | AUO Corporation | Display panel and display device for abnormal detection |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107610653A (en) | A kind of pixel cell and the display panel for including it | |
| CN108039148B (en) | A kind of display panel and electronic equipment | |
| CN103383836B (en) | Pixel circuit and driving method, display panel and display device of pixel circuit | |
| CN105788530B (en) | The threshold voltage circuit for detecting of OLED display | |
| CN103383834B (en) | A kind of image element circuit, display panel and display device | |
| CN105528997B (en) | A kind of pixel circuit, driving method and display panel | |
| CN105336292B (en) | Oled pixel compensation circuit and oled pixel driving method | |
| CN106910468A (en) | The driving method of display panel, display device and image element circuit | |
| CN108417149A (en) | A kind of display panel and its driving method, display device | |
| CN104835453B (en) | A kind of image element circuit, driving method and display device | |
| CN105575333A (en) | OLED device and source driver | |
| CN109697960A (en) | Pixel-driving circuit and driving method, display panel | |
| CN107919091B (en) | A kind of OLED pixel driving circuit and driving method, OLED display | |
| CN203480803U (en) | Pixel circuit, display panel, and display device | |
| CN106816140A (en) | Display panel and its driving method | |
| US9412311B2 (en) | Backlight module with 2D/3D backlight switching unit and display device comprising the backlight module | |
| CN106971691A (en) | A kind of image element circuit, driving method and display device | |
| JP2007025122A (en) | Display device | |
| TW201115228A (en) | Flat display, backlight module and driving method thereof | |
| CN108538248A (en) | A kind of pixel circuit, driving method, display panel and display device | |
| CN106023897B (en) | AMOLED drive systems and AMOLED driving methods | |
| JP4185556B2 (en) | Display device | |
| CN106531082A (en) | Pixel driving circuit, display panel, display equipment and pixel driving method | |
| WO2023216552A1 (en) | Drive control circuit and display device | |
| CN207097427U (en) | OLED pixel drive circuit, array base palte and display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180119 |
|
| WD01 | Invention patent application deemed withdrawn after publication |