CN105679279B - Self-refresh display drive apparatus, driving method and display device - Google Patents
Self-refresh display drive apparatus, driving method and display device Download PDFInfo
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- CN105679279B CN105679279B CN201610244683.4A CN201610244683A CN105679279B CN 105679279 B CN105679279 B CN 105679279B CN 201610244683 A CN201610244683 A CN 201610244683A CN 105679279 B CN105679279 B CN 105679279B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/36—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of a graphic pattern, e.g. using an all-points-addressable [APA] memory
- G09G5/39—Control of the bit-mapped memory
- G09G5/393—Arrangements for updating the contents of the bit-mapped memory
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Abstract
The present invention relates to a kind of self-refresh display drive apparatus, driving method and display device.Described device includes self-refresh circuit, and the self-refresh circuit is used in self refresh display mode, and the picture for gathering each pixel cell of display panel pixel voltage stored and being shown according to the pixel voltage gathered to the display panel refreshes.Display device provided by the invention is realized based on self-refresh display drive apparatus described above, in static state display, self refresh display mode can be entered by triggering self-refresh circuit, so that display drive apparatus is to picture self-refresh, picture signal is sent to display screen without motherboard circuit, so as to reduce power consumption.
Description
Technical field
The present invention relates to display technology field, and in particular to a kind of self-refresh display drive apparatus, driving method and display
Device.
Background technology
Existing display device generally comprises motherboard circuit and display screen, and its course of work is：Motherboard circuit is according to solid
Determine frequency and view data is transmitted to display screen by MIPI interfaces, the driving chip on display screen is to the picture number that receives
According to the generation trichromatic data voltages of RGB after decoding, and the data voltage of generation is written to display screen by data wire
In pixel, the refreshing to display picture is realized.With the frequency more and more higher of the picture refreshing of display device, motherboard circuit is to aobvious
Showing the frequency of screen transmission view data, also more and more higher, power consumption are very big.
The content of the invention
For in the prior art the defects of, the present invention provides a kind of self-refresh display drive apparatus, driving method and display
Device, it can be used for reducing power consumption.
In a first aspect, the invention provides a kind of self-refresh display drive apparatus, described device includes self-refresh circuit, institute
State self-refresh circuit to be used in self refresh display mode, the pixel voltage and root that collection each pixel cell of display panel is stored
The picture shown according to the pixel voltage gathered to the display panel refreshes.
Further, the self-refresh circuit includes selector and self-refresh display module, the selector respectively with institute
State self-refresh display module, multiple data wire incoming ends are connected, in self refresh display mode, the self-refresh to be shown
Show that module sequentially turns on each data wire incoming end；
The self-refresh display module is used in self refresh display mode, passes through connected data wire incoming end collection
It is connected to the pixel voltage that each pixel cell of the data wire incoming end is stored；And pass through connected data wire incoming end
To pixel voltage corresponding to each pixel cell application of the data wire incoming end.
Further, the self-refresh display module includes：AD conversion unit, D/A conversion unit, switch element with
And logic circuit unit, wherein：
The input of the AD conversion unit is connected with the first end of the switch element, and its output end is patrolled with described
Circuit unit is collected to be connected；Pixel voltage for will be received from the first end of the switch element passes through analog-to-digital conversion into number
Word signal output is to the logic circuit unit；
The logic circuit unit is used for after the data signal of AD conversion unit output is received, and is delayed the number
Word signal output is to the D/A conversion unit；
The input of the D/A conversion unit is connected with the logic circuit unit, and its output end and the switch are single
Second end of member is connected；It is output to for the data signal exported in logic circuit unit to be converted into corresponding pixel voltage
Second end of the switch element；
The switch element is also connected with the selector, under the control of first switch control signal, by first
End is connected with selector；Under the control of second switch control signal, the second end is connected with the selector.
Further, the logic circuit unit includes latch.
Further, described device also includes normal display module；
The selector is also connected with the normal display module, in normal displaying mode, described will normally show
Show that module sequentially turns on each data wire incoming end；
The normal display module, in normal displaying mode, according to corresponding to producing the picture signal received
Pixel voltage is simultaneously applied to connected data wire incoming end.
Further, described device includes pattern switching control module, the pattern switching control module respectively with it is described
Self-refresh circuit, the normal display module are connected, and refer to for reception pattern control signal, and in the mode control signal
Show when entering self refresh display mode, respectively to the self-refresh display module, the selector and the normal display module
Send for indicating the control signal into self refresh display mode；Enter normal display mould in mode control signal instruction
During formula, the self-refresh display module, the selector and the normal display module hair are sent to the normal display module
Send the control signal for indicating to enter normal display module.
Further, described device also includes mobile Industry Processor Interface MIPI；The MIPI interfaces and pattern switching
Control module and normal display module are connected；
The normal display module is used to receive the picture signal for being input to MIPI interfaces；
The pattern switching control module, which is used for reception pattern control signal, to be included being used to receive being input to MIPI interfaces
Mode control signal.
Further, the self-refresh circuit is used for the current picture according to the pixel voltage gathered to the display panel
Face, which carries out refreshing, to be included：For each pixel cell at least one pixel cell, adopted according to for the pixel cell
Renewal pixel voltage corresponding to the pixel voltage generation of collection, and use picture of the generated renewal pixel voltage to the pixel cell
Plain voltage is refreshed；The pixel voltage difference it is expected between pixel voltage corresponding with the pixel cell that updates is less than institute
The pixel voltage collected and the difference it is expected between pixel voltage.
Second aspect, the invention provides a kind of driving method, for driving the self-refresh described in above-mentioned any one to show
Show drive device, it is characterised in that methods described includes：
When judging to need to show tableaux, the self-refresh circuit is controlled to enter self refresh display mode.
The third aspect, the invention provides a kind of display device, including the self-refresh display drive described in above-mentioned any one
Dynamic device.
For the present invention by being provided with self-refresh circuit in self-refresh display drive apparatus, the self-refresh circuit can be certainly
The pixel voltage that each pixel cell of display panel is stored is gathered when refreshing display pattern and according to the pixel voltage pair gathered
Display panel carries out picture refreshing.So in static state display, mould can be shown into self-refresh by triggering self-refresh circuit
Formula so that display drive apparatus sends picture signal, so as to reduce without motherboard circuit to picture self-refresh to display screen
Power consumption.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to make a simply introduction, it should be apparent that, drawings in the following description are this hairs
Some bright embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can be with root
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is a kind of structural representation for self-refresh display drive apparatus that one embodiment of the invention provides；
Fig. 2 is the structural representation of the self-refresh display module provided in one embodiment of the invention.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
During the present invention is realized, the inventors found that：In some display scenes, for example user reads
Article, check picture, chat when, the picture shown on the display screen can typically continue for some time, in this time, display
The picture that device is shown is tableaux, and the picture data that is to say motherboard circuit to the driving chip of display device is the same
's.So if setting driving chip automatically to refresh to the picture of display based on obtained picture data, then may be used
To avoid motherboard circuit from sending picture data to the driving chip of display screen, so as to reduce power consumption.
Based on above-mentioned discovery, the present inventor is provided with self-refresh circuit in display drive apparatus, should be from brush
Novel circuit is used in self refresh display mode, the pixel voltage that is stored of collection each pixel cell of display panel and according to being adopted
The pixel voltage of collection refreshes to the picture that display panel is shown.So in static state display, can by can by touch
Entering self refresh display mode from refresh circuit, (such as by specific trigger signal, for example enable signal makes self-refresh electric
Road enters self refresh display mode) so that display drive apparatus is sent out picture self-refresh without motherboard circuit to display screen
Picture signal is sent, so as to reduce power consumption.
In the specific implementation, the structure of above-mentioned self-refresh circuit can have a variety of, " be shown that can realize in self-refresh
During pattern, the pixel voltage that each pixel cell of display panel is stored is gathered and according to the pixel voltage gathered to display panel
The picture of display is refreshed " as on the premise of function, specifically how to design the self-refresh circuit present invention and do not limit.For
Readily appreciate, below in conjunction with accompanying drawing some embodiments of self-refresh circuit are illustrated.
Referring to Fig. 1, a kind of preferred embodiment of self-refresh circuit (1 is expressed as in Fig. 1), self-refresh electricity are shown
Road 1 includes selector 12 and self-refresh display module 11.
Wherein, selector 12 respectively with self-refresh display module 11, multiple data wire incoming end Data1, Data2 ...
Data (n) is connected, in self refresh display mode, by self-refresh display module 11 and each data wire incoming end
Data1, Data2 ... Data (n) are sequentially turned on；
Self-refresh display module 11 is used in self refresh display mode, passes through connected data wire incoming end Data i
(i is any positive integer equal to n) collection is connected to the picture that data wire incoming end Data i each pixel cell is stored
Plain voltage；And each pixel cell for passing through connected data wire incoming end Data i to data wire incoming end Data i is applied
Add corresponding pixel voltage.
The self-refresh circuit 1 shown in Fig. 1 realizes that the principle of corresponding function is：In self refresh display mode, selection
Each data wire incoming end Data1, Data2 ... Data (n) is connected on self-refresh display module 11 by device 12 successively；For
Any one is less than or equal to n positive integer i, when data wire incoming end Data i are connected to self-refresh display module 11, from brush
New display module 11 can gather each pixel for being connected to data wire incoming end Data i from data wire incoming end Data i
The pixel voltage that unit is stored；So it is achieved that the work(for the pixel voltage that collection each pixel cell of display panel is stored
Energy；Pass through connected data wire incoming end Data i afterwards to data wire incoming end Data i each pixel cell to apply
Corresponding pixel voltage, realize the function of being refreshed according to the pixel voltage gathered to the picture that display panel is shown.
And the self-refresh circuit 1 shown in Fig. 1 only includes selector 12 and self-refresh display module 11, simple in construction easy
In design.
In the specific implementation, for being connected to same data wire input Data i each pixel cell, Ke Yitong
The storage capacitance of each pixel cell is consecutively connected to data voltage input Data i by the mode for crossing grid line scanning, from brush
New display module 11 can gather the picture when the storage capacitance of a pixel cell is connected to data voltage input Data i
The data voltage that the storage capacitance of plain unit is stored.
In the specific implementation, selector 12 here can use digital gating circuit realiration, no longer describe in detail herein.
Self-refresh display module 11 can also use various structures to realize, Fig. 2 shows the one of self-refresh display module 11
Kind preferred embodiment, the self-refresh display module 11 include：
Analog to digital conversion circuit (ADC) 111, logic circuit unit 112, D/A converting circuit (DAC) 113 and switch element
114.Wherein, the input of AD conversion unit 111 is connected with the first end K1 of switch element 114, and its output end is patrolled with 112
Volume circuit unit is connected, for the pixel voltage that will be received from the first end K1 of switch element 114 by analog-to-digital conversion into
Data signal is output to logic circuit unit 112.Logic circuit unit 112 is used to receive the number of AD conversion unit output
After word signal, it is delayed and above-mentioned data signal is output to D/A conversion unit 113.The input of D/A conversion unit 113 is with patrolling
Volume circuit unit 112 is connected, and its output end is connected with the second end K2 of 114 switch elements, for by logic circuit unit
The data signal exported in 112 is converted to the second end K2 that corresponding pixel voltage is output to switch element 114.Switch element
114 are also connected with selector 12, under the control of first switch control signal, first end K1 to be connected with selector 12；
Under the control of second switch control signal, the second end K2 is connected with selector 12.
The self-refresh display module 11 shown in Fig. 2 realizes that the principle of corresponding function is：
The stage of pixel voltage is being read, the first end of first switch control signal controlling switch unit 114 can be passed through
K1 is connected with selector 12；When selector 12 selects data wire incoming end Data i being connected to the first of switch element 114
When holding K1, the analog-to-digital conversion module 111 for being connected similarly to the first end K1 of switch element 114 is connect by selector 12 with data wire
Enter to hold Data i to be connected, obtain be connected to pixel capacitance CS1 two in data wire incoming end Data i each pixel cell successively
The pixel voltage at end is simultaneously converted into data signal transmission to logic circuit unit 112, and logic circuit unit 112 is to above-mentioned data letter
Number stored.So, be achieved that self-refresh display module 11 " passing through connected data wire incoming end Data i, (i is
Any positive integer equal to n) collection is connected to the pixel electricity that data wire incoming end Data i each pixel cell is stored
Pressure " function.
In the stage that the picture to display panel is refreshed, second switch control signal controlling switch unit can be passed through
114 the second end K2 is connected with selector 12；When selector 12 selects data wire incoming end Data i being connected to switch list
During the second end K2 of member 114, the D/A conversion unit 113 for being connected similarly to the second end K2 of switch element 114 passes through selector
12 are connected with data wire incoming end Data i, and D/A conversion unit 113 is successively read what is stored from logic circuit unit 112
Each data-signal (being connected to data-signal corresponding to data wire incoming end Data i each pixel) simultaneously changes pixel voltage into
Data wire incoming end Data i are output to, so as to be output in the pixel capacitance CS1 in corresponding pixel cell.Thus realize
Self-refresh display module 11 " passes through connected data wire incoming end Data i to each of data wire incoming end Data i
The function of pixel voltage corresponding to individual pixel cell application ".
Logic circuit unit 112 can use latch to realize in self-refresh display module 11 shown in Fig. 2, and modulus turns
It is relatively common electronic component to change circuit (ADC) 111, D/A converting circuit (DAC) 113 and switch element 114.In Fig. 2
The easily realization, and easily controllable simple in construction of self-refresh display module 11 shown.
As a preferred embodiment, referring to Fig. 1, above-mentioned display drive apparatus, which can also include, to be used to carry out just
The normal display module 3 of often display driving, normal display module 3 are connected with selector 12.Here normal display module 3 is
For self-refresh circuit, specifically in normal displaying mode, according to corresponding to producing the picture signal received
Pixel voltage is simultaneously applied to connected selector 12.Now, the selector 12 can be also used in normal displaying mode, will
Normal display module 3 sequentially turns on each data wire incoming end Data1, Data2 ... Data (n).In this way, energy
Enough so that display drive apparatus carries out the display of dynamic menu, and due to the selection of normal display module 3 multiplexing self-refresh circuit 1
Device 12, it is possible to reduce the quantity of component used in display drive apparatus.Certainly a kind of alternative mode is used as, here
Normal display module 3 can not also be multiplexed selector 12, and preferred embodiment provided by the invention is it is not intended that to the present invention
The restriction of protection domain.
In the specific implementation, the structure of normal display module 3 here may refer in the prior art enter display panel
The design for the display module that row refreshes, the present invention no longer describe in detail herein.
In the case of comprising normal driver module 3, it is necessary to above-mentioned self-refresh display module 11, selector
12nd, the working condition of normal display module 3 is controlled, to realize cutting between normal displaying mode and self refresh display mode
Change.In the specific implementation, such process can be realized by various structures.Provided by the present invention one is also show in Fig. 1
Kind preferred embodiment, referring to Fig. 1, the display drive apparatus also includes：Pattern switching control module 4；The pattern switching control
Molding block 4 is connected with self-refresh display module 11, selector 12 and normal display module 3 respectively, for reception pattern control
Signal Ctrl processed, and when mode control signal Ctrl instructions enter self refresh display mode, to the He of self-refresh display module 11
Selector 12 is sent for indicating the control signal into self refresh display mode；Enter just in mode control signal Ctrl instructions
During normal display pattern, sent to normal display module 3 and selector 12 for indicating the control signal into normal displaying mode.
Here control signal can be specially level signal.For example, when needing to enter self refresh display mode,
High level can be exported to self-refresh display module 11 and selector 12, export low level to normal display module 3, triggering is brushed certainly
New display module 11 and selector 12 enter self refresh display mode；, can be to normal display module 3 in normal displaying mode
High level is exported, and low level is exported to selector 12, normal display module 11 and selector 12 is triggered and enters normal display mould
Formula.
In the specific implementation, mode control signal Ctrl here can be transferred to pattern switching control in several ways
Module 4.Fig. 1 is shown in which a kind of preferred embodiment, and referring to Fig. 1, the display drive apparatus includes MIPI (Mobile
Industry Processor Interface, MIPI interface), the MIPI interfaces 5 are connected with pattern switching control module 4；
And it is connected by data wire Data with normal display module 3.Wherein, normal display module 3 is input to MIPI for reception and connect
The picture signal of mouth；Pattern switching control module 4 is used to receive control signal Ctrl including being input to MIPI interfaces for reception
Mode control signal.For example, mode control signal Ctrl signals are input to pattern switching control module 4 by the MIPI interfaces 5,
And the display pattern according to indicated by mode control signal Ctrl.This embodiment cause mode control signal Ctrl and
Picture signal can be transmitted by same interface (MIPI interfaces 5), can reduce the use of signal wire.Likewise, it can connect
Receive on the premise of mode control signal Ctrl is transferred into pattern switching control module 4, how specific use designs will not shadow
Ring protection scope of the present invention.
According to above-mentioned record, so it is easy to understand that：Before it can realize function corresponding to self-refresh display module 11
Put, how self-refresh display module 11 is implemented not interfering with the various embodiment party of relevant normal display module 3 mentioned above
Formula, the combination of the preferred embodiment of self-refresh display module 11 and the various embodiments about normal display module 3
Protection scope of the present invention should be fallen into.
In the specific implementation, as yet another preferred embodiment, can also set the self-refresh circuit 1 specifically according to
Following manner refreshes to the picture that display panel is shown：
For each pixel cell at least one pixel cell, according to the pixel gathered for the pixel cell
Renewal pixel voltage corresponding to voltage generation, and the pixel voltage of the pixel cell is entered using the renewal pixel voltage generated
Row refreshes；The renewal pixel voltage difference it is expected between pixel voltage corresponding with the pixel cell is less than collected pixel
Difference between voltage and expectation pixel voltage.
Here expectation pixel voltage refers to the pixel voltage that each pixel cell should be applied in display, in static state
During display, motherboard circuit can be specifically referred to and be directed to the pixel voltage that the pixel is transmitted for the last time.In practical application, pixel
Electric capacity CS1 can have leaky unavoidably, and so when self-refresh circuit gathers pixel voltage, pixel capacitance CS1 voltage can
Can varied (when pixel voltage is positive voltage, pixel voltage may be decreased；When pixel voltage is negative voltage, as
Plain voltage may have built up).So cause the phase of the pixel voltage that self-refresh display module 11 is gathered and the pixel cell
Pixel voltage is hoped compared to certain deviation be present, if directly pixel voltage as use is applied to corresponding pixel cell
In, in the presence of certain distortion when can cause the display picture to refresh.And in preferred embodiment provided by the invention, basis first
The pixel voltage collected for a pixel cell generates one with the expectation pixel voltage corresponding to the pixel cell more
Close renewal pixel voltage, corresponding pixel cell will be refreshed using the renewal pixel voltage afterwards, thus may be used
To mitigate the phenomenon of this distortion.
It is noted that can also be realized by the structure of the self-refresh circuit shown in Fig. 1 and Fig. 2 it is above-mentioned " right
The pixel voltage collected is updated to obtain the process of renewal pixel voltage ".
Specifically, the logic circuit unit 112 in Fig. 2 can be set to be received when pixel voltage is positive voltage
After data-signal corresponding to pixel voltage, data-signal is updated according to certain algorithm so that the data after renewal
Pixel voltage corresponding to signal has a certain upgrade (for example improving the percentage of setting) compared with the pixel voltage received；
When pixel voltage is negative voltage, after data-signal corresponding to pixel voltage is received, according to certain algorithm to data
Signal is updated so that there is certain pixel voltage compared with the pixel voltage received corresponding to the data-signal after renewal
Reduce, so as to it is expected that pixel voltage is more close.
Certainly in the specific implementation, the pixel voltage collected is updated to obtain the process for updating pixel voltage not
It is to have to realize based on the self-refresh circuit shown in Fig. 1 and Fig. 2, those skilled in the art can also use others
Mode designs self-refresh circuit to realize such function, and the present invention will not enumerate herein.
Second aspect, present invention also offers a kind of driving method, can be used for driving including certainly described in first aspect
The display drive apparatus of refresh circuit, this method include：
When judging to need to show tableaux, the self-refresh circuit is controlled to enter self refresh display mode.
By driving method provided by the invention, the self-refresh circuit is enabled to enter when needing and showing tableaux
Row self refresh display mode, picture signal thus is sent to display screen without motherboard circuit, so as to reduce power consumption.
The third aspect, present invention also offers a kind of display device, the display device includes above-mentioned self-refresh display and driven
Dynamic device.The display device can be：Display panel, mobile phone, tablet personal computer, television set, notebook computer, DPF, lead
Navigate any products or part with display function such as instrument.
Display device provided by the invention can be solved same due to comprising above-mentioned self-refresh display drive apparatus
Technical problem, and obtain identical technique effect, this is no longer going to repeat them.
In the specification of the present invention, numerous specific details are set forth.It is to be appreciated, however, that embodiments of the invention can be with
Put into practice in the case of these no details.In some instances, known method, structure and skill is not been shown in detail
Art, so as not to obscure the understanding of this description.
Similarly, it will be appreciated that disclose to simplify the present invention and help to understand one or more in each inventive aspect
Individual, in the description to the exemplary embodiment of the present invention above, each feature of the invention is grouped together into single sometimes
In embodiment, figure or descriptions thereof.It is intended to however, should not explain the method for the disclosure in reflection is following：Want
Seek the application claims features more more than the feature being expressly recited in each claim of protection.More precisely, such as
As claims reflect, inventive aspect is all features less than single embodiment disclosed above.Therefore, abide by
Thus the claims for following embodiment are expressly incorporated in the embodiment, wherein each claim is in itself
Separate embodiments as the present invention.
The orientation of the instruction such as " on ", " under " or position relationship are base it should be noted that term in the description of the invention
In orientation shown in the drawings or position relationship, description description of the invention and simplified, rather than instruction or hint are for only for ease of
Signified device or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to this
The restriction of invention.Unless otherwise clearly defined and limited, term " installation ", " connected ", " connection " should broadly understood, example
Such as, can be fixedly connected or be detachably connected, or be integrally connected；Can mechanically connect or be electrically connected
Connect；Can be joined directly together, can also be indirectly connected by intermediary, can be the connection of two element internals.For this
For the those of ordinary skill in field, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
It should also be noted that, herein, such as first and second or the like relational terms are used merely to one
Entity or operation make a distinction with another entity or operation, and not necessarily require or imply between these entities or operation
Any this actual relation or order be present.Moreover, term " comprising ", "comprising" or its any other variant are intended to contain
Lid nonexcludability includes, so that process, method, article or equipment including a series of elements not only will including those
Element, but also the other element including being not expressly set out, or it is this process, method, article or equipment also to include
Intrinsic key element.It is more limit in the case of, the key element that is limited by sentence "including a ...", it is not excluded that
Other identical element also be present in process, method, article or equipment including the key element.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than it is limited；Although with reference to the foregoing embodiments
The present invention is described in detail, it will be understood by those within the art that：It still can be to foregoing each implementation
Technical scheme described in example is modified, or carries out equivalent substitution to which part technical characteristic；And these modification or
Replace, the essence of appropriate technical solution is departed from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (10)
1. a kind of self-refresh display drive apparatus, it is characterised in that described device includes self-refresh circuit, the self-refresh circuit
For in self refresh display mode, gathering the pixel voltage that each pixel cell of display panel is stored and according to the picture gathered
The picture that plain voltage is shown to the display panel refreshes, and the self-refresh circuit includes selector and self-refresh shows mould
Block, the selector are connected with the self-refresh display module, multiple data wire incoming ends respectively, and the self-refresh shows mould
Block is used in self refresh display mode, passes through connected data wire incoming end collection and is connected to each of the data wire incoming end
The pixel voltage that individual pixel cell is stored.
2. self-refresh display drive apparatus according to claim 1, it is characterised in that the selector is used in self-refresh
During display pattern, the self-refresh display module and each data wire incoming end are sequentially turned on；
The self-refresh display module passes through each pixel cell of the connected data wire incoming end to the data wire incoming end
Pixel voltage corresponding to application.
3. self-refresh display drive apparatus according to claim 2, it is characterised in that the self-refresh display module bag
Include：AD conversion unit, D/A conversion unit, switch element and logic circuit unit, wherein：
The input of the AD conversion unit is connected with the first end of the switch element, its output end and logic electricity
Road unit is connected；Pixel voltage for will be received from the first end of the switch element is believed by analog-to-digital conversion into numeral
Number it is output to the logic circuit unit；
The logic circuit unit is used for after the data signal of AD conversion unit output is received, and is delayed and believes the numeral
Number it is output to the D/A conversion unit；
The input of the D/A conversion unit is connected with the logic circuit unit, its output end and the switch element
Second end is connected；It is output to for pixel voltage corresponding to the data signal exported in logic circuit unit is converted to described
Second end of switch element；
The switch element is also connected with the selector, under the control of first switch control signal, by first end with
Selector is connected；Under the control of second switch control signal, the second end is connected with the selector.
4. self-refresh display drive apparatus according to claim 3, it is characterised in that the logic circuit unit includes lock
Storage.
5. self-refresh display drive apparatus according to claim 2, it is characterised in that described device also includes normal display
Module；
The selector is also connected with the normal display module, in normal displaying mode, mould normally to be shown by described
Block sequentially turns on each data wire incoming end；
The normal display module, in normal displaying mode, the pixel according to corresponding to producing the picture signal received
Voltage is simultaneously applied to connected data wire incoming end.
6. self-refresh display drive apparatus according to claim 5, it is characterised in that described device includes pattern switching control
Molding block, the pattern switching control module is connected with the self-refresh circuit, the normal display module respectively, for connecing
Mode control signal is received, and when mode control signal instruction enters self refresh display mode, respectively to the self-refresh
Display module, the selector and the normal display module are sent for indicating that the control into self refresh display mode is believed
Number；When mode control signal instruction enters normal displaying mode, the self-refresh is sent to the normal display module
Display module, the selector and the normal display module send the control signal for indicating to enter normal display module.
7. self-refresh display drive apparatus according to claim 6, it is characterised in that described device also includes mobile industry
Processor interface MIPI；The MIPI interfaces are connected with pattern switching control module and normal display module；
The normal display module is used to receive the picture signal for being input to MIPI interfaces；
The pattern switching control module, which is used for reception pattern control signal, to be included being used to receive the pattern for being input to MIPI interfaces
Control signal.
8. self-refresh display drive apparatus according to claim 1, it is characterised in that the self-refresh circuit is used for basis
The pixel voltage gathered carries out refreshing to the current picture of the display panel to be included：For at least one pixel cell
Each pixel cell, pixel voltage is updated according to corresponding to the pixel voltage generation gathered for the pixel cell, and made
The pixel voltage of the pixel cell is refreshed with the renewal pixel voltage generated；The renewal pixel voltage and the pixel
It is expected that the difference between pixel voltage is less than between collected pixel voltage and the expectation pixel voltage corresponding to unit
Difference.
9. a kind of driving method, for driving the self-refresh display drive apparatus as described in claim 1-8 any one, it is special
Sign is that methods described includes：
When judging to need to show tableaux, the self-refresh circuit is controlled to enter self refresh display mode.
10. a kind of display device, it is characterised in that including the self-refresh display driving dress described in claim 1~8 any one
Put.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610244683.4A CN105679279B (en) | 2016-04-18 | 2016-04-18 | Self-refresh display drive apparatus, driving method and display device |
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| CN106375553B (en) | 2016-08-24 | 2019-09-17 | 武汉华星光电技术有限公司 | Display screen combination and the mobile terminal with display screen combination |
| CN109584766B (en) * | 2017-09-28 | 2022-02-25 | 广东美晨通讯有限公司 | Display method, display device and device with storage function |
| CN108877646B (en) * | 2018-07-26 | 2020-03-06 | 厦门凌阳华芯科技有限公司 | Display circuit and display |
| CN111768738B (en) * | 2020-06-11 | 2021-11-23 | 昇显微电子(苏州)有限公司 | Circuit design method for reducing refresh rate and saving power consumption of AMOLED display driving chip |
| CN114446212B (en) * | 2020-10-30 | 2023-07-18 | 合肥京东方光电科技有限公司 | Display device and self-refreshing method thereof |
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| CN1400577A (en) * | 2001-07-27 | 2003-03-05 | 三洋电机株式会社 | Active matric-type display device and its controller |
| JP5889421B2 (en) * | 2012-09-26 | 2016-03-22 | シャープ株式会社 | Display device and driving method thereof |
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| US20010045943A1 (en) * | 2000-02-18 | 2001-11-29 | Prache Olivier F. | Display method and system |
| CN102804251B (en) * | 2009-06-12 | 2015-06-17 | 夏普株式会社 | Pixel circuit and display device |
| WO2010143612A1 (en) * | 2009-06-12 | 2010-12-16 | シャープ株式会社 | Pixel circuit and display device |
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| CN1400577A (en) * | 2001-07-27 | 2003-03-05 | 三洋电机株式会社 | Active matric-type display device and its controller |
| JP5889421B2 (en) * | 2012-09-26 | 2016-03-22 | シャープ株式会社 | Display device and driving method thereof |
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