CN109346013A - Driving circuit, driving chip and display device - Google Patents
Driving circuit, driving chip and display device Download PDFInfo
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- CN109346013A CN109346013A CN201811565158.8A CN201811565158A CN109346013A CN 109346013 A CN109346013 A CN 109346013A CN 201811565158 A CN201811565158 A CN 201811565158A CN 109346013 A CN109346013 A CN 109346013A
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- 230000005611 electricity Effects 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 8
- 229920001621 AMOLED Polymers 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 235000009470 Theobroma cacao Nutrition 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 244000240602 cacao Species 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 210000004508 polar body Anatomy 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
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]
- G09G3/3275—Details of drivers for data electrodes
-
- 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]
- G09G3/3266—Details of drivers for scan electrodes
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0673—Adjustment of display parameters for control of gamma adjustment, e.g. selecting another gamma curve
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
- G09G2330/02—Details of power systems and of start or stop of display operation
- G09G2330/021—Power management, e.g. power saving
Abstract
The embodiment of the present invention provides a kind of driving circuit, driving chip and display device, wherein, pass through the ingehious design to driving circuit, when display device is in standby mode driving voltage can be provided for the data line in its display panel by external power supply module, it can be effectively reduced the power consumption of display device in stand-by mode, extend display device uses the time.
Description
Technical field
The present invention relates to display equipment technical fields, fill in particular to a kind of driving circuit, driving chip and display
It sets.
Background technique
AMOLED (Active Matrix Organic Light Emitting Diode, active matrix organic light-emitting two
Polar body) display device may be implemented preferably to show relative to LCD (Liquid Crystal Display, liquid crystal display device)
Effect and lower power consumption, and have been widely used in the equipment such as high-end, smart phone, wrist-watch.But existing display dress
Set it is identical with the working principle under standby mode in normal mode of operation, be only through reduce screen refresh rate come reduce be in
Display device power consumption under machine mode can not effectively prolong so that the loss reduction space of display device in use is limited
Long its uses the time, meets user experience.
Summary of the invention
In view of this, can effectively solve the problem that above-mentioned the present invention provides a kind of driving circuit, driving chip and display device
Problem.
On the one hand, present pre-ferred embodiments provide a kind of driving circuit, are applied to display device, which includes
Display panel with multiple data lines, the driving circuit include source control circuit, the first electric-controlled switch, for generating mould
First charge pump of quasi- voltage, the GAMMA voltage generation circuit for generating GAMMA (gamma) voltage, described first automatically controlled opens
Pass is provided with control terminal, first input end, the second input terminal and output end；
The first input end of first electric-controlled switch, first charge pump input terminal respectively with external power supply module
Connection, the second input terminal of first electric-controlled switch connect with the output end of first charge pump, the external control of control terminal
Signal, the input terminal of the GAMMA voltage generation circuit connect with the output end of first electric-controlled switch, output end with it is described
The input terminal of source control circuit connects, and each data line in the output end of the source control circuit and the display panel connects
It connects；
Wherein, when being input to the signal of control terminal of first electric-controlled switch is first control signal, described first
Charge pump is connected to the GAMMA voltage generation circuit to provide driving signal for the data line in the display panel, so that
The display device is in normal mode of operation；
When being input to the signal of control terminal of first electric-controlled switch is second control signal, the external power supply mould
Block is connected to the GAMMA voltage generation circuit to provide driving signal for the data line in the display panel, so that described
Display device is in standby mode.
Further, the source control circuit include multi-way contral switch and multiple operational amplifiers, it is described more
Channel control switch is provided with multiple input terminals and multiple output ends, and the operational amplifier is provided with control terminal, the first input
End, the second input terminal and output end；
Each input terminal of multi-way contral switch connect with the output end of the GAMMA voltage generation circuit respectively,
Each output end is connect with the first input end of each operational amplifier respectively, the external control of control terminal of each operational amplifier
The data line of signal, output end and first input end processed, the second input terminal and the display panel is separately connected；
It wherein, is operation when third controls signal when being input to the input signal of control terminal of the operational amplifier
Amplifier is closed, and the GAMMA voltage generation circuit is connected to through the GAMMA voltage with the data line of the display panel
Generation circuit provides driving signal for the data line in the display panel；
The operation amplifier when being input to the input signal of control terminal of the operational amplifier and being the 4th control signal
Device is opened, and the GAMMA voltage generation circuit, which is connected to by the operational amplifier with the data line of the display panel, to be thought
Data line in the display panel provides driving signal.
Further, the GAMMA voltage generation circuit includes divider resistance array and buffer (buffering) gate array,
The divider resistance array is provided with input terminal and multiple output ends, and the buffer gate array is provided with multiple input terminals
With multiple output ends；
The input terminal of the divider resistance array is connect with external power supply module, each output end is electric with the buffer respectively
Each input terminal of road array is correspondingly connected with, and each output end and the multi-way contral of the buffer gate array switch each
Input terminal is connected respectively.
Further, the display panel is additionally provided with a plurality of grid line, and the driving circuit further includes grid control electricity
Road, the second electric-controlled switch, third electric-controlled switch, the second charge pump for generating negative pressure, for generating gate high-voltage
Tricharged pump and the 4th charge pump for generating grid low-voltage, second electric-controlled switch and the third electric-controlled switch
It is provided with the end of control terminal, first input end, the second input terminal and output；
The first input end of second electric-controlled switch connect with the output end of first charge pump, the second input terminal with
The output end connection of the tricharged pump, output end are connect with the first input end of the grid control circuit, control terminal is external
Signal is controlled, the input terminal of the third charge pump is connect with the output end of first charge pump；
The first input end of the third electric-controlled switch connect with the output end of second charge pump, the second input terminal with
The output end connection of 4th charge pump, output end are connect, outside control terminal with the first input end of the grid control circuit
Control signal is connect, the input terminal of second charge pump is connect with the external power supply module, the input of the 4th charge pump
End is connect with the output end of second charge pump；
Wherein, when the control terminal and the third electric-controlled switch that are input to second electric-controlled switch control terminal control
When signal processed is the 5th control signal, the third charge pump is connected by second electric-controlled switch and the grid control circuit
It is logical, and the 4th charge pump is connected to by the third electric-controlled switch with the grid control circuit, for the display surface
Grid line in plate provides driving signal, so that the display device is in normal mode of operation；
When the control letter of the control terminal of the control terminal and the third electric-controlled switch that are input to second electric-controlled switch
When number for the 6th control signal, first charge pump is connected to by second electric-controlled switch with the grid control circuit,
And second charge pump is connected to by the third electric-controlled switch with the grid control circuit, in the display panel
Grid line provide driving signal so that the display device is in standby mode.
Further, the first control signal is identical as the 5th control signal, the second control signal and institute
It is identical to state the 6th control signal.
Further, the driving circuit further includes internal electric source module；
When the display device is in standby mode, the input terminal of the internal electric source module and first charge pump
Output end connection, output end connect to provide anode voltage and cathode voltage for the display panel with the display panel.
Further, the driving circuit further includes the 4th electric-controlled switch, and the 4th electric-controlled switch is provided with the first input
End, the second input, output end and control terminal；
The first input end of 4th electric-controlled switch is connect with the internal electric source module, the second input terminal is for outside
Power supply chip connects, output end is connect with the display panel, the external control signal of control terminal；Wherein, when the control terminal
When input signal is the 7th control signal, the internal electric source module is connected by the 4th electric-controlled switch and the display panel
It connects；When the input signal of the control terminal is the 8th control signal, the external power supply chip automatically controlled is opened by the described 4th
Pass is connect with the display panel.
Further, the driving circuit further includes control signal generating circuit and microprocessor, and the control signal produces
The input terminal of raw circuit is connect with the output end of the microprocessor, the input terminal of output end and first electric-controlled switch connects
It connects, the control signal generating circuit under the control of the microprocessor for the electric-controlled switch for providing different control
Signal.
On the other hand, present pre-ferred embodiments also provide a kind of driving chip, are integrated on the driving chip above-mentioned
The power driving circuit.
Another aspect, present pre-ferred embodiments also provide a kind of display device, and the display device includes display panel
The driving circuit of sum, the display panel are provided with a plurality of grid line and multiple data lines；
Source control circuit in the driving circuit and each data line in the display panel be separately connected, grid control
Each grid line in circuit processed and the display panel is separately connected to realize the driving to the display panel.
Compared with prior art, the present invention provides a kind of driving circuit, driving chip and display device, wherein by right
The ingehious design of driving circuit, can be in its display panel by external power supply module when display device is in standby mode
Data line provide driving voltage, can be effectively reduced the power consumption of display device in stand-by mode, extend making for display device
Use the time.
In addition, the present invention can also provide drive by GAMMA voltage generation circuit for the display panel under standby mode
Dynamic voltage, to further decrease the power consumption of display device under standby mode.
To enable the above objects, features and advantages of the present invention to be clearer and more comprehensible, preferred embodiment is cited below particularly, and cooperate
Appended attached drawing, is described in detail below.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the frame structure schematic diagram of display device provided in an embodiment of the present invention.
Fig. 2 is the structural schematic diagram of driving circuit shown in Fig. 1.
Fig. 3 is the electrical block diagram of source control circuit shown in Fig. 2.
Fig. 4 is another electrical block diagram of source control circuit shown in Fig. 2.
Fig. 5 is the electrical block diagram of GAMMA voltage generation circuit shown in Fig. 2.
Fig. 6 is another structural schematic diagram of driving circuit shown in Fig. 1.
Fig. 7 is the another structural schematic diagram of driving circuit shown in Fig. 1.
Icon: 10- display device；20- driving circuit；21- source control circuit；210- multi-way contral switch；211-
Operational amplifier；The first electric-controlled switch of 22-；The first charge pump of 23-；24-GAMMA voltage generation circuit；240- divider resistance battle array
Column；241-buffer gate array；2410-buffer circuit；25- grid control circuit；The second electric-controlled switch of 26-；27- third
Electric-controlled switch；The second charge pump of 28-；29- third charge pump；The 4th charge pump of 30-；31- controls signal generating circuit；32- is micro-
Processor；40- display panel；S- data line；G- grid line；50- external power supply module；60- external power supply chip；Inside 70-
Power module.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment only
It is a part of the embodiments of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings
The component of embodiment can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below claimed
The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without creative efforts belongs to the model that the present invention protects
It encloses.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.In description of the invention
In, " first, second, third, fourth etc. is only used for distinguishing description term, and should not be understood as only or imply relative importance.
In the description of the present invention unless specifically defined or limited otherwise, term " setting ", " connected ", " connection " are answered
It is interpreted broadly, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The connection in portion.For the ordinary skill in the art, the tool of above-mentioned term in the present invention can be understood with concrete condition
Body meaning.
As shown in Figure 1, being the frame structure schematic diagram of display device 10 provided in an embodiment of the present invention, the display device 10
Including driving circuit 20 and display panel 40, be provided on the display panel 40 for each pixel in the display panel 40
The a plurality of gate lines G of grid connection in unit and the multiple data lines S being connect with the source electrode in each pixel unit, wherein
Driving voltage is provided to control the display surface to each gate lines G and each data line S by the driving circuit 20
The working condition of each pixel unit in plate 40, and then realize the display control to display panel 40.In addition, the display device
10 also connect to provide working power for the driving circuit 20 with external power supply module 50.It should be noted that the display
Device 10 can be but not limited to AMOLED display device.
In detail, please refer to Fig. 2, the driving circuit 20 include source control circuit 21, the first electric-controlled switch 22,
GAMMA voltage generation circuit 24 for generating the first charge pump 23 of analog voltage and for generating GAMMA voltage, described
One electric-controlled switch 22 is provided with control terminal, first input end, the second input terminal and output end, and the of first electric-controlled switch 22
One input terminal, first charge pump 23 input terminal connect respectively with external power supply module 50, first electric-controlled switch 22
The second input terminal connect with the output end of first charge pump 23, the external control signal of control terminal, the GAMMA voltage produces
The input terminal of raw circuit 24 connect with the output end of first electric-controlled switch 22, output end and the source control circuit 21
Input terminal connection, the output end of the source control circuit 21 are connect with each data line S in the display panel 40.Wherein,
The first control signal can be but not limited to high level signal, and the second control signal can be but not limited to low level
Signal.
According to actual needs, the working condition of the display device 10 can be generally divided into normal mode of operation and standby mould
Formula, wherein when the display device 10 is in normal mode of operation, the driving circuit 20 is that the display panel 40 provides
The mode of driving voltage is same as the prior art.Such as, the first control letter can be inputted to the control terminal of first electric-controlled switch 22
Number, so that first charge pump 23 is connected to the number thought in the display panel 40 with the GAMMA voltage generation circuit 24
Driving signal is provided according to line S.
When the display device 10 is in standby mode, to the second control of the control terminal of first electric-controlled switch 22 input
Signal is thought in the display panel 40 so that the external power supply module 50 is connected to the GAMMA voltage generation circuit 24
Data line S provide driving signal.
It should be noted herein that the driving circuit 20 is institute when the display device 10 is in normal mode of operation
The mode for stating the offer driving voltage of display panel 40 is same as the prior art.But when the display device 10 is in standby mode
When, the present invention compared with the existing technology, on the one hand passes through the setting of the first electric-controlled switch 22 so that external power supply module 50 can be straight
The power supply source as the GAMMA voltage generation circuit 24 is connect, to save the function of 23 this partial circuit of the first charge pump
Consumption；On the other hand, since the first charge pump 23 is to carry out multiplication of voltage processing, such as for the output voltage to external power module 50
The output voltage of one charge pump 23 can be but be not limited to two times of output voltage of the external power supply module 50, therefore, lead to
Previous designs are crossed, can be effectively reduced the supply voltage under standby mode, save power consumption.
It is by inputting different control letters to the control terminal of first electric-controlled switch 22 in above-mentioned driving circuit 20
Number, so that the driving circuit 20 is that the source control circuit 21 provides different driving voltages, so that described aobvious
Showing device 10 is in different operating modes.Wherein, the actual type of first electric-controlled switch 22 can carry out spirit according to demand
Living to choose, the present embodiment is herein with no restrictions.
Further, the source control circuit 21 is used to generate the drive for driving the data line S in the display panel 40
Dynamic voltage (such as S (1), S (2) ...), according to the difference to display device 10 display effect and power consumption demand, the source electrode
There are many ways of realization of control circuit 21, for example, please referring to Fig. 3, the source control circuit 21 may include multi-pass
Road control switch 210 and multiple operational amplifiers 211, the multi-way contral switch 210 may be provided with multiple input terminals and
Multiple output ends, the operational amplifier 211 may be provided with control terminal, first input end, the second input terminal and output end.Institute
Each input terminal for stating multi-way contral switch 210 connect with the output end of the GAMMA voltage generation circuit 24 respectively, respectively exports
End is connect with the first input end of each operational amplifier 211 respectively, the external control of control terminal of each operational amplifier 211
Signal processed, output end and the second input terminal and the display panel 40 data line S be separately connected.
In another example please refer to Fig. 4, the source control circuit 21 includes multi-way contral switch 210 and multiple
Operational amplifier 211, the multi-way contral switch 210 are provided with multiple input terminals and multiple output ends, the operation amplifier
Device 211 is provided with control terminal (EN), first input end, the second input terminal and output end, the multi-way contral switch 210
Each input terminal is connect with the output end of the GAMMA voltage generation circuit 24 respectively, each output end is put with each operation respectively
The first input end of big device 211, the connection of the second input terminal, it is the external control signal of control terminal of each operational amplifier 211, defeated
Outlet and the data line S of first input end, the second input terminal and the display panel 40 are separately connected.
Wherein, described in when being input to the input signal of control terminal of the operational amplifier 211 and being third control signal
Operational amplifier 211 is closed, and the GAMMA voltage generation circuit 24 is connected to the data line S of the display panel 40 to pass through
The GAMMA voltage generation circuit 24 provides driving signal for the data line S in the display panel 40；When being input to the fortune
The input signal for calculating the control terminal of amplifier 211 unlatching of operational amplifier 211, GAMMA when being the 4th control signal
Voltage generation circuit 24, which is connected to by the operational amplifier 211 with the data line S of the display panel 40, thinks the display
Data line S in panel 40 provides driving signal.
It should be noted that when the display device 10 is in normal mode of operation, the source electrode control that is provided in Fig. 4
The circuit operation principle of source control circuit 21 provided in circuit 21 and Fig. 3 processed is identical, but when the display device 10 is in
When standby mode, the source control circuit 21 provided in Fig. 4 can pass through the working condition of the control operational amplifier 211
(such as opening or closing) makes for driving the driving voltage of the data line S different, for example, when being input to the operation amplifier
The control signal of the control terminal of device 211 is that third controls the closing of operational amplifier 211 when signal, to pass through the GAMMA
Voltage generation circuit 24 the data line S directly for the display panel 40 provide driving voltage, so as to effectively save source electrode
The quiescent dissipation of control circuit 21.When actual implementation, the operation in the source control circuit 21 can be controlled according to actual needs
The quantity that amplifier 211 opens or closes.
Further, as shown in figure 5, the GAMMA voltage generation circuit 24 includes divider resistance array 240 and buffer
Gate array 241, the divider resistance array 240 are provided with input terminal and multiple output ends, the buffer gate array
241 are provided with multiple input terminals and multiple output ends；The input terminal of the divider resistance array 240 and first electric-controlled switch
22 output end connects, each input terminal of each output end respectively with the buffer gate array 241 is correspondingly connected with, described
Each output end of buffer gate array 241 and each input terminal of the multi-way contral switch 210 are connected respectively.
Wherein, it is big to be used for the voltage according to needed for driving the data line S for each resistance in the divider resistance array 240
The small voltage division processing realized to input voltage.Each buffer circuit 2410 in the buffer gate array 241 is for enhancing
The driving capability of the driving voltage of corresponding branch output, the voltage before such as handling through each buffer circuit 2410 are V (1), V
(2) ... (63) V, treated voltage is VG (1), VG (2) ... VG (64).Optionally, in the present embodiment, described point
The quantity of the quantity of resistance in piezoresistance array 240 and the buffer circuit 2410 in the buffer gate array 241
It can the voltage order according to required for the display device 10 (such as 64 ranks, 128 ranks, 256 ranks) decision.It should be noted that institute
State the number of the quantity of the resistance in divider resistance array 240, buffer circuit 2410 in the buffer gate array 241
Amount, the multi-way contral switch 210 input, output end quantity and the operational amplifier 211 quantity Matching
Or correspond, the present embodiment is herein with no restrictions.
Further, Fig. 6 is please referred to, it is automatically controlled that the driving circuit 20 may also include grid control circuit 25, second
Switch 26, third electric-controlled switch 27, the second charge pump 28 for generating negative pressure, the third charge for generating gate high-voltage
Pump 29 and the 4th charge pump 30 for generating grid low-voltage, second electric-controlled switch 26 and the third electric-controlled switch
27 are provided with the end of control terminal, first input end, the second input terminal and output.
The first input end of second electric-controlled switch 26 is connect with the output end of first charge pump 23, second inputs
End is connect with the output end of the third charge pump 29, output end is connect with the first input end of the grid control circuit 25,
The external control signal of control terminal, the input terminal of the third charge pump 29 are connect with the output end of first charge pump 23；Institute
The first input end for stating third electric-controlled switch 27 connect with the output end of second charge pump 28, the second input terminal and described the
The output end connection of four charge pumps 30, output end are connect with the first input end of the grid control circuit 25, control terminal is external
Signal is controlled, the input terminal of second charge pump 28 is connect with the external power supply module 50, the 4th charge pump 30
Input terminal is connect with the output end of second charge pump 28.It should be noted that, second charge pump similar with the first charge pump 23
28, the third charge pump 29 and the 4th charge pump 30 be for carrying out multiplication of voltage processing to input voltage, e.g., described the
The output voltage of two charge pumps 28 is minus 2 times of output voltage, and the output voltage of the third charge pump 29 is the 2 of input voltage
Times etc..In addition, the working principle of second electric-controlled switch 26, the third electric-controlled switch 27 and the first above-mentioned electric-controlled switch
22 working principle is identical, and details are not described herein for the present embodiment.
It should be noted that the driving circuit 20 is described when the display device 10 is in normal mode of operation
The mode that gate lines G in display panel 40 provides driving voltage is same as the prior art.It such as, can be to second electric-controlled switch
The 5th control signal of 26 control terminal and the input of the control terminal of the third electric-controlled switch 27, so that the third charge pump 29
It is connected to by second electric-controlled switch 26 with the grid control circuit 25, and the 4th charge pump 30 passes through the third
Electric-controlled switch 27 is connected to the grid control circuit 25, to provide driving signal for the gate lines G in the display panel 40,
So that the display device 10 is in normal mode of operation.But when the display device 10 is in standby mode, the driving
Circuit 20 can be same as the prior art (such as above-mentioned for the mode that the gate lines G in the display panel 40 provides driving voltage
Normal mode of operation is described), it can also be different.
For example, when the driving circuit 20 be the gate lines G in the display panel 40 provide driving voltage mode and
It, can be to the control terminal of second electric-controlled switch 26 and the control terminal of the third electric-controlled switch 27 when prior art difference
The 6th control signal is inputted, so that first charge pump 23 passes through second electric-controlled switch 26 and the grid control circuit
25 connections, and second charge pump 28 is connected to by the third electric-controlled switch 27 with the grid control circuit 25, with for
Gate lines G in the display panel 40 provides driving signal.It should be noted herein that compared with prior art, in
The input voltage of grid control circuit 25 is adjusted to institute by the display device 10 under machine mode, the foregoing manner that the present embodiment provides
The output voltage of the first charge pump 23 and the output voltage of second charge pump 28 are stated, so that supply voltage reduces, that is, is existed
It can be by turning off third charge pump 29 and the 4th charge pump 30, to save third charge pump 29 and the 4th charge pump under standby mode
30 circuit power consumption, and then reduce the total power consumption of the display device 10 in stand-by mode.
It should be noted that above-mentioned first electric-controlled switch 22, the second electric-controlled switch 26 and third electric-controlled switch
27 state control when, the first control signal with it is described 5th control signal it is identical, the second control signal with it is described
6th control signal is identical.And in actual implementation, to first electric-controlled switch 22, second electric-controlled switch 26 and institute
The control signal for stating the input of third electric-controlled switch 27 can be provided by external circuit, can also be provided by internal circuit.For example, such as
Shown in Fig. 7, in the present embodiment, the driving circuit 20 may include control signal generating circuit 31 and microprocessor 32, with reality
Now to the control of the high efficiency, accuracy, intelligence of the driving circuit 20.Wherein, the control signal generating circuit 31
Input terminal connect with the output end of the microprocessor 32, the input terminal of output end and first electric-controlled switch 22, described the
The input terminal of the input terminal of two electric-controlled switch 26 and the third electric-controlled switch 27 is separately connected, and the control signal generates electricity
Road 31 is for providing different control signals so that described for each electric-controlled switch under the control of the microprocessor 32
Display device 10 is in standby mode or normal mode of operation.In the present embodiment, the control signal generating circuit 31 and Wei Chu
The actual type of reason device 32 can flexibly be chosen according to actual needs, and such as control signal generating circuit 31 can be but not
It is limited to oscillator etc..
Further, according to actual needs, referring to Fig. 7, the driving circuit 20 may also include internal electric source mould
Block 70；When the display device 10 is in standby mode, the input terminal of the internal electric source module 70 and first charge
The output end connection of pump 23, output end are connect to provide anode voltage and cathode for the display panel 40 with the display panel 40
Voltage.
In addition, the driving circuit 20 may also include the 4th electric-controlled switch, the 4th electric-controlled switch is provided with the first input
End, the second input, output end and control terminal；The first input end of 4th electric-controlled switch and the internal electric source module 70
Connection, the second input terminal are used to connect with external power supply chip 60, output end is connect with the display panel 40, control terminal is external
Control signal；Wherein, when the input signal of the control terminal is the 7th control signal, the internal electric source module 70 passes through institute
The 4th electric-controlled switch is stated to connect with the display panel 40；When the input signal of the control terminal is the 8th control signal, institute
External power supply chip 60 is stated to connect by the 4th electric-controlled switch with the display panel 40.
Based on the ingehious design to above-mentioned driving circuit 20, the embodiment of the present invention also provides a kind of driving chip, the driving
Driving circuit 20 described above is integrated on chip.It is understood that since the driving chip has and above-mentioned driving
The identical technical characteristic of circuit 20 can refer to accordingly, with respect to the actual circuit structure etc. of the driving chip to aforementioned driving electricity
The description on road 20, details are not described herein for the present embodiment.
In conclusion the present invention provides a kind of driving circuit 20, driving chip and display device 10, wherein by drive
The ingehious design of dynamic circuit 20, with can be by external power supply module 50 for its display surface when display device 10 be in standby mode
Data line S in plate 40 provides driving voltage, can be effectively reduced the power consumption of display device 10 in stand-by mode, extends display
Device 10 uses the time.
In addition, it is the display panel 40 under standby mode that the present invention, which goes back cocoa by GAMMA voltage generation circuit 24,
Driving voltage is provided, to further decrease the power consumption of display device 10 under standby mode.
Obviously, those skilled in the art should be understood that the function of the above-mentioned embodiment of the present invention can use general meter
Device is calculated to realize, they can be concentrated on a single computing device, or be distributed in net constituted by multiple computing devices
On network, optionally, they can be realized with the executable existing program code of computing device or algorithm, it is thus possible to by it
Store and be performed by computing device in the storage device, perhaps they are fabricated to each integrated circuit modules or
Single integrated circuit module is maked multiple modules or steps in them to realize.In this way, functions implementing the present invention are not
Any specific hardware and software is limited to combine.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of driving circuit is applied to display device, which includes the display panel with multiple data lines, special
Sign is that the driving circuit includes source control circuit, the first electric-controlled switch, the first charge for generating analog voltage
Pump, the GAMMA voltage generation circuit for generating GAMMA voltage, first electric-controlled switch are provided with control terminal, the first input
End, the second input terminal and output end；
The first input end of first electric-controlled switch, first charge pump input terminal respectively with external power supply module connect
It connects, the second input terminal of first electric-controlled switch is connect with the output end of first charge pump, the external control letter of control terminal
Number, the input terminal of the GAMMA voltage generation circuit connect with the output end of first electric-controlled switch, output end and the source
The input terminal of pole control circuit connects, and each data line in the output end of the source control circuit and the display panel connects
It connects；
Wherein, when being input to the signal of control terminal of first electric-controlled switch is first control signal, first charge
Pump is connected to the GAMMA voltage generation circuit to provide driving signal for the data line in the display panel, so that described
Display device is in normal mode of operation；
When be input to the signal of control terminal of first electric-controlled switch be second control signal when, the external power supply module with
The GAMMA voltage generation circuit connection is to provide driving signal for the data line in the display panel, so that the display
Device is in standby mode.
2. driving circuit according to claim 1, which is characterized in that the source control circuit includes that multi-way contral is opened
It closes and multiple operational amplifiers, the multi-way contral switch is provided with multiple input terminals and multiple output ends, the operation
Amplifier is provided with control terminal, first input end, the second input terminal and output end；
Each input terminal of the multi-way contral switch connect with the output end of the GAMMA voltage generation circuit respectively, is each defeated
Outlet is connect with the first input end of each operational amplifier respectively, the external control letter of the control terminal of each operational amplifier
Number, the data line of output end and first input end, the second input terminal and the display panel is separately connected；
It wherein, is operation amplifier when third controls signal when being input to the input signal of control terminal of the operational amplifier
Device is closed, and the GAMMA voltage generation circuit is connected to be generated by the GAMMA voltage with the data line of the display panel
Circuit provides driving signal for the data line in the display panel；
When being input to the input signal of control terminal of the operational amplifier and being the 4th control signal, the operational amplifier is opened
It opens, described in the GAMMA voltage generation circuit is connected to the data line of the display panel and is thought by the operational amplifier
Data line in display panel provides driving signal.
3. driving circuit according to claim 2, which is characterized in that the GAMMA voltage generation circuit includes partial pressure electricity
Resistance array and buffer gate array, the divider resistance array are provided with input terminal and multiple output ends, the buffer
Gate array is provided with multiple input terminals and multiple output ends；
The input terminal of the divider resistance array connect with external power supply module, each output end respectively with the buffer circuit battle array
Each input terminal of column is correspondingly connected with, each input of each output end of the buffer gate array and multi-way contral switch
End is connected respectively.
4. driving circuit according to claim 1, the display panel also has a plurality of grid line, which is characterized in that institute
Stating driving circuit further includes grid control circuit, the second electric-controlled switch, third electric-controlled switch, the second charge for generating negative pressure
Pump, the third charge pump for generating gate high-voltage and the 4th charge pump for generating grid low-voltage, described second
Electric-controlled switch and the third electric-controlled switch are provided with the end of control terminal, first input end, the second input terminal and output；
The first input end of second electric-controlled switch connect with the output end of first charge pump, the second input terminal with it is described
The output end of tricharged pump connects, output end is connect with the first input end of the grid control circuit, the external control of control terminal
Signal, the input terminal of the third charge pump are connect with the output end of first charge pump；
The first input end of the third electric-controlled switch connect with the output end of second charge pump, the second input terminal with it is described
The output end of 4th charge pump connects, output end is connect with the first input end of the grid control circuit, the external control of control terminal
Signal processed, the input terminal of second charge pump are connect with the external power supply module, the input terminal of the 4th charge pump with
The output end of second charge pump connects；
Wherein, when the control of the control terminal of the control terminal and the third electric-controlled switch that are input to second electric-controlled switch is believed
When number for the 5th control signal, the third charge pump is connected to by second electric-controlled switch with the grid control circuit,
And the 4th charge pump is connected to by the third electric-controlled switch with the grid control circuit, in the display panel
Grid line provide driving signal so that the display device is in normal mode of operation；
When the control signal of the control terminal of the control terminal and the third electric-controlled switch that are input to second electric-controlled switch is
When the 6th control signal, first charge pump is connected to by second electric-controlled switch with the grid control circuit, and institute
It states the second charge pump and is connected to by the third electric-controlled switch with the grid control circuit, for the grid in the display panel
Polar curve provides driving signal, so that the display device is in standby mode.
5. driving circuit according to claim 4, which is characterized in that the first control signal and the 5th control are believed
Number identical, the second control signal is identical as the 6th control signal.
6. driving circuit according to claim 1, which is characterized in that the driving circuit further includes internal electric source module；
When the display device is in standby mode, the input terminal of the internal electric source module is defeated with first charge pump
Outlet connection, output end are connect to provide anode voltage and cathode voltage for the display panel with the display panel.
7. driving circuit according to claim 6, which is characterized in that the driving circuit further includes the 4th electric-controlled switch,
4th electric-controlled switch is provided with first input end, the second input, output end and control terminal；
The first input end of 4th electric-controlled switch is connect with the internal electric source module, the second input terminal is for connecting outside
Power supply chip, output end are connect with the display panel, the external control signal of control terminal；Wherein, when the input of the control terminal
When signal is the 7th control signal, the internal electric source module is connect by the 4th electric-controlled switch with the display panel；
When the input signal of the control terminal be the 8th control signal when, the external power supply chip by the 4th electric-controlled switch with
The display panel connection.
8. driving circuit according to claim 1, which is characterized in that the driving circuit further includes that control signal generates electricity
Road and microprocessor, it is described control signal generating circuit input terminal connect with the output end of the microprocessor, output end and
The input terminal of first electric-controlled switch connects, and the control signal generating circuit for being under the control of the microprocessor
The electric-controlled switch provides different control signals.
9. a kind of driving chip, which is characterized in that be integrated on the driving chip described in any one of the claims 1-8
Driving circuit.
10. a kind of display device, which is characterized in that the display device includes appointing in display panel and the claims 1-8
Driving circuit described in one, the display panel are provided with a plurality of grid line and multiple data lines；
Each data line in source control circuit and the display panel in the driving circuit is separately connected, grid control is electric
Each grid line in road and the display panel is separately connected to realize the driving to the display panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811565158.8A CN109346013A (en) | 2018-12-20 | 2018-12-20 | Driving circuit, driving chip and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811565158.8A CN109346013A (en) | 2018-12-20 | 2018-12-20 | Driving circuit, driving chip and display device |
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| Publication Number | Publication Date |
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| CN109346013A true CN109346013A (en) | 2019-02-15 |
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ID=65304399
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811565158.8A Pending CN109346013A (en) | 2018-12-20 | 2018-12-20 | Driving circuit, driving chip and display device |
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| CN (1) | CN109346013A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110379396A (en) * | 2019-06-17 | 2019-10-25 | 北京集创北方科技股份有限公司 | Gamma electric voltage production method, generation circuit, source electrode drive circuit, driving chip and display device |
| CN113053334A (en) * | 2019-12-26 | 2021-06-29 | 乐金显示有限公司 | Foldable display device and driving method thereof |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1731502A (en) * | 2005-08-24 | 2006-02-08 | 友达光电股份有限公司 | Display device and data driving circuit |
| CN102737606A (en) * | 2012-07-12 | 2012-10-17 | 福建捷联电子有限公司 | Circuit structure for reducing standby power consumption of display device |
| CN104464673A (en) * | 2014-12-22 | 2015-03-25 | 南京中电熊猫液晶显示科技有限公司 | Display device and control method and control circuit thereof |
| US20160260409A1 (en) * | 2015-03-02 | 2016-09-08 | Samsung Electronics Co., Ltd. | Display driving integrated circuit and display device including the same |
| CN106782259A (en) * | 2015-09-25 | 2017-05-31 | 乐金显示有限公司 | Display device and the method for driving the display device |
| CN106920511A (en) * | 2015-12-28 | 2017-07-04 | 上海和辉光电有限公司 | A kind of electric power system and terminal device for reducing holding state power consumption |
| CN108281122A (en) * | 2018-03-07 | 2018-07-13 | 惠州高盛达科技有限公司 | Tcon plate integrated devices |
| US20180330654A1 (en) * | 2017-04-11 | 2018-11-15 | Samsung Electronics Co, Ltd. | Display panel, display device, and operation method of display device |
| CN209232378U (en) * | 2018-12-20 | 2019-08-09 | 北京集创北方科技股份有限公司 | Driving circuit, driving chip and display device |
-
2018
- 2018-12-20 CN CN201811565158.8A patent/CN109346013A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1731502A (en) * | 2005-08-24 | 2006-02-08 | 友达光电股份有限公司 | Display device and data driving circuit |
| CN102737606A (en) * | 2012-07-12 | 2012-10-17 | 福建捷联电子有限公司 | Circuit structure for reducing standby power consumption of display device |
| CN104464673A (en) * | 2014-12-22 | 2015-03-25 | 南京中电熊猫液晶显示科技有限公司 | Display device and control method and control circuit thereof |
| US20160260409A1 (en) * | 2015-03-02 | 2016-09-08 | Samsung Electronics Co., Ltd. | Display driving integrated circuit and display device including the same |
| CN106782259A (en) * | 2015-09-25 | 2017-05-31 | 乐金显示有限公司 | Display device and the method for driving the display device |
| CN106920511A (en) * | 2015-12-28 | 2017-07-04 | 上海和辉光电有限公司 | A kind of electric power system and terminal device for reducing holding state power consumption |
| US20180330654A1 (en) * | 2017-04-11 | 2018-11-15 | Samsung Electronics Co, Ltd. | Display panel, display device, and operation method of display device |
| CN108281122A (en) * | 2018-03-07 | 2018-07-13 | 惠州高盛达科技有限公司 | Tcon plate integrated devices |
| CN209232378U (en) * | 2018-12-20 | 2019-08-09 | 北京集创北方科技股份有限公司 | Driving circuit, driving chip and display device |
Non-Patent Citations (1)
| Title |
|---|
| 雷博琳;郭小军;司秉玉;唐先柱;: "浅谈低功耗液晶显示屏的设计技术", 现代显示, no. 06 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110379396A (en) * | 2019-06-17 | 2019-10-25 | 北京集创北方科技股份有限公司 | Gamma electric voltage production method, generation circuit, source electrode drive circuit, driving chip and display device |
| CN113053334A (en) * | 2019-12-26 | 2021-06-29 | 乐金显示有限公司 | Foldable display device and driving method thereof |
| CN113053334B (en) * | 2019-12-26 | 2024-04-09 | 乐金显示有限公司 | Foldable display device and driving method thereof |
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