CN109920367A - A kind of logical gate operations circuit, integrated chip and display device based on pixel driver - Google Patents
A kind of logical gate operations circuit, integrated chip and display device based on pixel driver Download PDFInfo
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- CN109920367A CN109920367A CN201910236397.7A CN201910236397A CN109920367A CN 109920367 A CN109920367 A CN 109920367A CN 201910236397 A CN201910236397 A CN 201910236397A CN 109920367 A CN109920367 A CN 109920367A
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- 239000003990 capacitor Substances 0.000 claims abstract description 17
- 230000005669 field effect Effects 0.000 claims description 3
- 239000002096 quantum dot Substances 0.000 claims description 3
- 230000003760 hair shine Effects 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 7
- 230000005611 electricity Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Abstract
The invention discloses a kind of logical gate operations circuit, integrated chip and display device based on pixel driver, including the first transistor, second transistor, capacitor and luminescent device；Respectively as the first input end and the second input terminal of logical gate operations circuit, the second pole of the first transistor is electrically connected with the grid of second transistor for first pole of the first transistor and grid；First pole of second transistor is electrically connected with the first power supply line, and the second pole of second transistor is electrically connected with the first pole of luminescent device, output end of the second pole of second transistor as logical gate operations circuit；Second pole of luminescent device is electrically connected with second source line；First pole of capacitor is electrically connected with the grid of second transistor, and the second pole of capacitor is used for input reference voltage；Wherein, the first transistor and second transistor are P-type transistor.It realizes that the logical gate operations circuit based on pixel driver can both drive lumination of light emitting diode, can also realize logic or non-operation function.
Description
Technical field
The present embodiments relate to pixel driver technology more particularly to a kind of logical gate operations electricity based on pixel driver
Road, integrated chip and display device.
Background technique
Pixel-driving circuit has important application, the display panel being made of pixel-driving circuit in display panel field
With Flexible Displays, simple and low in cost etc. the advantages of transparence display, high brightness, structure.
However traditional pixel-driving circuit is only because driving lumination of light emitting diode, each light emitting diode are corresponding
An independent pixel-driving circuit, therefore will cause a large amount of wastes of pixel-driving circuit resource.
Summary of the invention
In view of the deficiencies in the prior art, the present invention provides a kind of logical gate operations circuit based on pixel driver, to realize
Logical gate operations circuit based on pixel driver can both drive lumination of light emitting diode, can also realize logic or non-operation function.
In a first aspect, the embodiment of the invention provides a kind of logical gate operations circuit based on pixel driver, including first
Transistor, second transistor, capacitor and luminescent device；
First pole of the first transistor and grid respectively as the logical gate operations circuit first input end and
Second pole of the second input terminal, the first transistor is electrically connected with the grid of the second transistor；
First pole of the second transistor is electrically connected with the first power supply line, the second pole of the second transistor with it is described
First pole of luminescent device is electrically connected, output end of the second pole of the second transistor as the logical gate operations circuit；
Second pole of the luminescent device is electrically connected with second source line；
First pole of the capacitor is electrically connected with the grid of the second transistor, and the second pole of the capacitor is for inputting
Reference voltage；
Wherein, the first transistor and the second transistor are P-type transistor.
Optionally, the voltage on first power supply line is higher than the voltage on the second source line.
Optionally, the second source line is ground line.
Optionally, the first transistor and the second transistor are bipolar junction transistor or field effect transistor
Pipe.
Optionally, the light-emitting component is Organic Light Emitting Diode OLED, light emitting diode with quantum dots QLED or miniature hair
Optical diode Micro-LED.
It optionally, further include third transistor and control line；
Second pole of the second transistor is connect with the first pole of the third transistor, and the of the third transistor
Two poles are connect with the first pole of the luminescent device, and the grid of the third transistor is connect with the control line.
Second aspect, the embodiment of the invention also provides a kind of integrated chips, including pixel is based on described in any of the above-described
The logical gate operations circuit of driving.
The third aspect, the embodiment of the invention also provides a kind of display device, the display device has logical operation function
Can, including the logical gate operations circuit described in multiple any of the above-described based on pixel driver, multiple logic gates are in battle array
Column arrangement.
Optionally, the first input end of one or several logical gate operations circuits, the second input terminal and output end
At least one of by switch, with the first input end of another or several logical gate operations circuits, second input
The electrical connection of at least one of end and output end.
The present invention is transported by using the logic gate for including the first transistor, second transistor, capacitor and luminescent device composition
Circuit is calculated, logical gate operations circuit driving lumination of light emitting diode can have both been can operate with, and also can operate with logic or non-operation,
The service efficiency of logical gate operations circuit is improved, while the computational load of processor can be reduced.
Detailed description of the invention
Fig. 1 is a kind of circuit structure signal of logical gate operations circuit based on pixel driver provided in an embodiment of the present invention
Figure；
Fig. 2 is the corresponding emulation timing diagram of circuit shown in Fig. 1；
Fig. 3 is that the circuit structure of another logical gate operations circuit based on pixel driver provided in an embodiment of the present invention shows
It is intended to；
Fig. 4 is the structural schematic diagram of display device provided in an embodiment of the present invention；
Fig. 5 is the corresponding electrical block diagram of Fig. 4.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention rather than limiting the invention.It also should be noted that in order to just
Only the parts related to the present invention are shown in description, attached drawing rather than entire infrastructure.
Embodiment
Fig. 1 is a kind of circuit structure signal of logical gate operations circuit based on pixel driver provided in an embodiment of the present invention
Figure；With reference to Fig. 1, including the first transistor 101, second transistor 102, capacitor 103 and luminescent device 104；
First pole of the first transistor 101 and grid are respectively as the first input end A of logical gate operations circuit and second
The second pole of input terminal B, the first transistor 101 are electrically connected with the grid of second transistor 102；
First pole of second transistor 102 is electrically connected with the first power supply line 105, the second pole of second transistor 102 and hair
First pole of optical device 104 is electrically connected, output end Y of the second pole of second transistor 102 as logical gate operations circuit；
Second pole of luminescent device 104 is electrically connected with second source line 106；
First pole of capacitor 103 is electrically connected with the grid of second transistor 102, and the second pole of capacitor 103 is for inputting ginseng
Examine voltage；
Wherein, the first transistor 101 and second transistor 102 are P-type transistor.
Specifically, the second pole of capacitor 103 can connect reference voltage, driven as long as logical gate operations circuit can be met as pixel
Holding when dynamic circuit to 102 grid potential of second transistor, illustratively, in the present embodiment by the of capacitor 103
Two poles connect second source line 106, and the first transistor 101 and second transistor 102 are all made of enhanced PMOS transistor, shine
Device 104 uses the miniature LED of GaN；P-type transistor is connected when being grid low level, and when grid high level closes；Fig. 2 is in Fig. 1
The corresponding emulation timing diagram of shown circuit；With reference to Fig. 2, when the grid of the second input terminal B namely the first transistor 101 inputs electricity
It puts down as high electricity, when 1, the first transistor 101 is closed, and the input signal of first input end A can not reach the grid of second transistor 102
Pole, thus second transistor is also switched off, namely output end Y output at this time is low level 0, i.e., when the second input terminal B is high level
1, when first input end A is high level 1 or low level 0, output end Y is low level 0；When the second input terminal B is low level 0
When, the first transistor 101 is connected, if first input end A is high level 1, the grid of second transistor 102 is high level 1, this
When second transistor 102 end, output end Y is still low level 0；When the second input terminal B is low level 0, if first input end A
For low level 0, then the grid of second transistor 102 is low level 0, and second transistor 102 is connected at this time, the output of output end Y
For high level 1；Namely the logical relation of output end Y and first input end A and the second input terminal B isIt can
It is used as or logic door.It is understood that when first input end A or the second input terminal B is low level, output end Y
NOT gate logical operation circuit can be constituted with another input terminal.
The technical solution of the present embodiment, by using including the first transistor, second transistor, capacitor and luminescent device group
At logical gate operations circuit both can operate with driving lumination of light emitting diode, logical gate operations circuit can also be applied to logic
Or non-operation improves the service efficiency of logical gate operations circuit, while can reduce the computational load of processor.
Optionally, the voltage on the first power supply line 105 is higher than the voltage on second source line 106；
Specifically, the voltage on voltage and second source line 106 on the first power supply line 105 is for guaranteeing luminescent device
Direction of current flow flows to the second pole for the first pole of luminescent device 104 on 104, so that luminescent device 104 is driven to shine, due to
Luminescent device 104 has one-way conduction characteristic, when the voltage on the first power supply line 105 is higher than the voltage on second source line 106
When, 104 normal luminous of luminescent device when second transistor 102 can be made to be connected.
Optionally, second source line 106 is ground line；
Optionally, the first transistor 101 and second transistor 102 are bipolar junction transistor or field effect transistor；
Optionally, luminescent device is Organic Light Emitting Diode (Organic Light-Emitting Diode, OLED), measures
Sub- point luminescent diode (Quantum Dot Light Emitting Diodes, QLED) or micro-led (Micro-
Light Emitting Diode, Micro-LED).
The technical solution of the present embodiment can make logic gate by the way that the specific component type of logical gate operations circuit is arranged
Computing circuit efficiently controls logical gate operations circuit in the case where meeting luminous driving luminescent device and or logic operation
Cost.
Optionally, Fig. 3 is the electricity of another logical gate operations circuit based on pixel driver provided in an embodiment of the present invention
Line structure schematic diagram；With reference to Fig. 3, the logical gate operations circuit provided by the invention based on pixel driver further includes third transistor
201 and control line 202；
Second pole of second transistor 102 is connect with the first pole of third transistor 201, and the second of third transistor 201
Pole is connect with the first pole of luminescent device 104, and the grid of third transistor 201 is connect with control line 202.
Specifically, control line 202 can work as logic for controlling the conducting or closure of third transistor 201 for control bus
Door computing circuit drives luminescent device 104 to shine not as pixel-driving circuit and uses, and makes as logical gate operations circuit
Used time can control third transistor 201 by control line 202 and close, accidentally shine to avoid light emitting diode 104；And work as logic
When door computing circuit drives luminescent device 104 to shine as pixel-driving circuit, control line 202 controls third transistor 201
Conducting, so that logical gate operations circuit meets the luminous function of driving luminescent device 104.
The technical solution of the present embodiment makes by using the logical gate operations circuit including third transistor and control line
The mistake that not will cause luminescent device when logical gate operations circuit is used as logical operation shines, and shows not influencing luminescent device
In the case where effect, the function of logical operation is realized.
Optionally, the embodiment of the invention also provides a kind of integrated chips, including any of the above-described based on pixel driver
Logical gate operations circuit.
Specifically, integrated chip provided in this embodiment both can operate in display device, computing circuit also can operate with
In.
Optionally, Fig. 4 is a kind of display device structure schematic diagram provided in an embodiment of the present invention, and Fig. 5 is the corresponding electricity of Fig. 4
Line structure schematic diagram；With reference to Fig. 4 and Fig. 5, logical gate operations circuit 401 including multiple any of the above-described based on pixel driver,
Multiple logical gate operations circuits 401 are arranged in array.
Optionally, the first input end A of one or several logical gate operations circuits 401, the second input terminal B and output end
At least one of Y is by switch 301, with the first input end of another or several logical gate operations circuits 401, second defeated
Enter the electrical connection of at least one of end and output end.
It is understood that designing the first input end of several logical gate operations circuits, second according to specific needs
Switch connection type between input terminal and output end switchs and transistor can be selected, can pass through control terminal C control switch 301
Conducting forms different types of combinational logic circuit or sequential logical circuit between each logical gate operations circuit to realize；Example
Property, with continued reference to Fig. 4, shown in circuit structure be using logical gate operations circuit provided in an embodiment of the present invention composition half
Add device circuit, Fig. 4 merely illustrates a switch 301, and wherein first input end A and the second input terminal B are respectively as half adder
First input end and the second input terminal can be used as the output end S of half adder after inverted 402 reverse phase of device of output end Y, to realize
Half plus calculation function of one input terminal and the second input terminal；It is understood that may include phase inverter in display device, if display
Phase inverter is not included in device, the first input end A or the second input terminal B that logical gate operations circuit 401 can also be used are low electricity
Flat, output end Y can constitute NOT gate logical operation circuit with another input terminal, and the present invention is not specifically limited in this embodiment.
It should be noted that display device provided in this embodiment can both meet display function and or non-operation function simultaneously
Can, the differentiation of display function and or non-operation function can also be realized according to the on or off of third transistor.If display device
When meeting display function and or non-operation function simultaneously, since logical gate operations circuit needs to meet first display function, thus
It can be distributed in operation is distributed in different logical gate operations circuits, to utilize each logical gate operations electricity to greatest extent
The available circuit state on road, and the second pole due to working as the first transistor is high level by low transition, and the first transistor
The first pole be low level namely second transistor when the second extremely low level of the first transistor by conducting variation be to turn off
When state, since capacitor acts on the holding of second transistor grid potential, second transistor should be shutdown by conducting variation
When the conducting that still continues for some time, if at this time will logical gate operations circuit apply to logical operation if will appear logic mistake
Accidentally, it therefore can be used operation distributed the case where being distributed in each logical gate operations circuit to avoid logic error.
The technical solution of the present embodiment, by using with logic function display device, since logical operation circuit can structure
At the distributed computing module of integrated localization, calculating speed and efficiency can be made to greatly improve, solve conventional pixel driving
The low problem of circuit utilization efficiency has achieved the effect that improve display operation efficiency.
Note that the above is only a better embodiment of the present invention and the applied technical principle.It will be appreciated by those skilled in the art that
The invention is not limited to the specific embodiments described herein, be able to carry out for a person skilled in the art it is various it is apparent variation,
It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out by above embodiments to the present invention
It is described in further detail, but the present invention is not limited to the above embodiments only, without departing from the inventive concept, also
It may include more other equivalent embodiments, and the scope of the invention is determined by the scope of the appended claims.
Claims (9)
1. a kind of logical gate operations circuit based on pixel driver, which is characterized in that including the first transistor, second transistor,
Capacitor and luminescent device；
The first input end and second of first pole of the first transistor and grid respectively as the logical gate operations circuit
Second pole of input terminal, the first transistor is electrically connected with the grid of the second transistor；
First pole of the second transistor is electrically connected with the first power supply line, and the second pole of the second transistor shines with described
First pole of device is electrically connected, output end of the second pole of the second transistor as the logical gate operations circuit；
Second pole of the luminescent device is electrically connected with second source line；
First pole of the capacitor is electrically connected with the grid of the second transistor, and the second pole of the capacitor is for inputting reference
Voltage；
Wherein, the first transistor and the second transistor are P-type transistor.
2. logical gate operations circuit according to claim 1, which is characterized in that the voltage on first power supply line is higher than
Voltage on the second source line.
3. logical gate operations circuit according to claim 2, which is characterized in that the second source line is ground line.
4. logical gate operations circuit according to claim 3, which is characterized in that further include third transistor and control line；
Second pole of the second transistor is connect with the first pole of the third transistor, the second pole of the third transistor
It is connect with the first pole of the luminescent device, the grid of the third transistor is connect with the control line.
5. logical gate operations circuit according to claim 1, which is characterized in that the first transistor and second crystalline substance
Body pipe is bipolar junction transistor or field effect transistor.
6. logical gate operations circuit according to claim 1, which is characterized in that the luminescent device is organic light-emitting diodes
Pipe OLED, light emitting diode with quantum dots QLED or micro-led Micro-LED.
7. a kind of integrated chip, which is characterized in that including the logic gate fortune described in claim any one of 1-6 based on pixel driver
Calculate circuit.
8. a kind of display device, the display device has the function of logical operation, which is characterized in that including multiple claim 1-
Logical gate operations circuit described in 6 any one based on pixel driver, multiple logic gates are arranged in array.
9. display device according to claim 8, which is characterized in that one or several logical gate operations circuits
At least one of first input end, the second input terminal and output end are by switch, with another or several logic gates
The electrical connection of at least one of the first input end of computing circuit, the second input terminal and output end.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910236397.7A CN109920367B (en) | 2019-03-27 | 2019-03-27 | Logic gate operation circuit based on pixel driving, integrated chip and display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910236397.7A CN109920367B (en) | 2019-03-27 | 2019-03-27 | Logic gate operation circuit based on pixel driving, integrated chip and display device |
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| CN109920367A true CN109920367A (en) | 2019-06-21 |
| CN109920367B CN109920367B (en) | 2024-01-30 |
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| CN101770746A (en) * | 2008-12-29 | 2010-07-07 | 乐金显示有限公司 | Organic light emitting diode (led) display |
| JP2012189752A (en) * | 2011-03-10 | 2012-10-04 | Japan Display East Co Ltd | Display device |
| CN103226931A (en) * | 2013-04-27 | 2013-07-31 | 京东方科技集团股份有限公司 | Pixel circuit and organic light emitting display |
| WO2015062298A1 (en) * | 2013-11-04 | 2015-05-07 | 京东方科技集团股份有限公司 | Oled pixel circuit and driving method thereof, and display device |
| CN108630152A (en) * | 2018-05-08 | 2018-10-09 | 京东方科技集团股份有限公司 | Display device and its pixel-driving circuit and driving method |
-
2019
- 2019-03-27 CN CN201910236397.7A patent/CN109920367B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1755103A1 (en) * | 2005-08-17 | 2007-02-21 | Samsung SDI Co., Ltd. | Emission control driver and organic light emitting display device having the same and a logical OR circuit for an emission control driver for outputting an emission control signal |
| CN101770746A (en) * | 2008-12-29 | 2010-07-07 | 乐金显示有限公司 | Organic light emitting diode (led) display |
| JP2012189752A (en) * | 2011-03-10 | 2012-10-04 | Japan Display East Co Ltd | Display device |
| CN103226931A (en) * | 2013-04-27 | 2013-07-31 | 京东方科技集团股份有限公司 | Pixel circuit and organic light emitting display |
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