CN110060622A - Display device and its driving method - Google Patents
Display device and its driving method Download PDFInfo
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- CN110060622A CN110060622A CN201910511832.2A CN201910511832A CN110060622A CN 110060622 A CN110060622 A CN 110060622A CN 201910511832 A CN201910511832 A CN 201910511832A CN 110060622 A CN110060622 A CN 110060622A
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 241001269238 Data Species 0.000 claims description 38
- 238000010586 diagram Methods 0.000 description 8
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 238000011017 operating method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Classifications
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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
- 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
- G09G3/2007—Display of intermediate tones
- G09G3/2074—Display of intermediate tones using sub-pixels
Abstract
The invention discloses a kind of display device and its driving methods.In a display device, the first multiplexer during pixel charges to provide the first pixel voltage to the first display pixel.Second multiplexer during pixel charges to provide the second pixel voltage to the second display pixel.Driver is to the polarity according to multiple display data to generate the first polarity data and the second polarity data；Respectively according to the first polarity data and the second polarity data to generate the first polarity average voltage and the second polarity average voltage；During precharge before during pixel charging, the first polarity average voltage and the second polarity average voltage are provided respectively to be pre-charged to the first data terminal and the second data terminal.
Description
Technical field
The invention relates to a kind of electronic devices, and in particular to a kind of display device and its driving method.
Background technique
With flourishing for screen touch electronic device (e.g., tablet computer, Smartphone, suchlike device), make
User usually can be by touch medium (such as finger, stylus (or active pen) or any work with touch function
Tool or product) operate its electronic device.However, operated when user is directed to the display panel with touch device, and
When the multiple switch being connected between the display panel and driver switches over movement, these switches would generally be counted
According to the different influence of voltage that the voltage on line is exported with the driver, cause each switch that may send out each other
The phenomenon that raw charge share (Charge Sharing), and then each switch is made to generate coupling noise when switching over movement
(Coupled Noise).Therefore, it how to be effectively reduced generated noise in display panel, will be this field the relevant technologies
Important one of the project of personnel.
Summary of the invention
The present invention provides a kind of display device and its driving method, can be during display device operates in pixel charging before
Precharge during when, using driver come in advance to data terminal carry out pre-charge operation, use reduce it is each switch each other it
Between generated noise.
Display device of the invention includes the first multiplexer, the second multiplexer and driver.The setting of first multiplexer exists
Between first data terminal and multiple first display pixels, to provide the first pixel voltage during pixel charges to each first
Display pixel.Second multiplexer is arranged between the second data terminal and multiple second display pixels, to charge the phase in pixel
Between provide the second pixel voltage to each second display pixel.Driver is multiple to generate to the polarity according to multiple display data
First polarity data and multiple second polarity datas；Respectively according to the first polarity data and the second polarity data to generate the
One polarity average voltage and the second polarity average voltage；During precharge before during pixel charging, first is provided respectively
Polarity average voltage and the second polarity average voltage are to be pre-charged the first data terminal and the second data terminal.
It include: to provide the first picture during pixel charging by the first multiplexer in the driving method of display device of the invention
Plain voltage is to multiple first display pixels；The second pixel voltage is provided to multiple second during pixel charging by the second multiplexer
Display pixel；By driver according to multiple polarity for showing data to generate multiple first polarity datas and multiple second polarity
Data；By driver respectively according to the first polarity data and the second polarity data to generate the first polarity average voltage and the
Two polarity average voltages；By driver during pixel charging before precharge during, to provide the first polarity average electricity respectively
Pressure and the second polarity average voltage are to be pre-charged the first data terminal and the second data terminal.
Multiple display data can be received using driver based on above-mentioned, of the invention display device, and can be according to these
Show that these display data are divided into the first polarity data of the display data for belonging to positive polarity and belonged to by the polarity of data
Second polarity data of the display data of negative polarity.Also, the driver can be according to the first polarity data and the second polarity
Data generate the first polarity average voltage and the second polarity average voltage respectively.In this way, when display device operates in
Pixel charge during before precharge during when, the driver can provide the first polarity average voltage and described respectively
Second polarity average voltage is to corresponding data terminal, so that noise caused by the first polarity data and the second polarity data can
It is substantial before switch conduction to be cancelled out each other, and then promote the task performance of display device.
To make the foregoing features and advantages of the present invention clearer and more comprehensible, special embodiment below, and cooperate institute's accompanying drawings
It is described in detail below.
Detailed description of the invention
Fig. 1 is the schematic diagram for illustrating a kind of display device according to one embodiment of the invention.
Fig. 2A and Fig. 2 B is the display device according to Fig. 1 embodiment of the present invention respectively under the different sequence of switches
Movement oscillogram.
Fig. 3 is the schematic diagram for illustrating a kind of display device according to another embodiment of the present invention.
Fig. 4 is the schematic diagram for illustrating a kind of display device according to yet another embodiment of the invention.
Fig. 5 is the operational flowchart according to the sequence controller of the display device of Fig. 4 embodiment of the present invention.
Fig. 6 is the method flow diagram according to the driving method of the display device of one embodiment of the invention.
Wherein, appended drawing reference:
100,300: display device
110,310: display panel
120,320,420: driver
421: sequence controller
422: source electrode driver
D1~D12: data line
DA1~DAN: display data
DP1_1, DP1_2, DP2_1, DP2_2, DP3_1, DP3_2: pixel voltage
G1~G3: grid line
GS1~GS3: gate drive signal
MUX2_1, MUX2_2, MUX3_1, MUX3_2: multiplexer
P1_1~P3_1, P1_2~P3_2, N1_1~N3_1, N1_2~N3_2: display pixel
PA1, PA2: polarity average value
SC1~SC3: control signal
ST1~STN: data terminal
SW1~SW3: switch
Sout: output signal
S510~S570, S610~S650: step
TSA, TAB: display time interval
TP1~TP6: during precharge
TC1~TC6: during pixel charges
VAVG1: polarity average voltage
XSTB: signal is captured
Specific embodiment
" coupling (or connection) " word used in this case specification full text (including claim) can refer to appoint
What direct or indirect connection means.For example, if it is described herein that first device coupling (or connection) is then answered in second device
This be construed as the first device can be directly connected to the second device or the first device can through other devices or
Certain connection means and be coupled indirectly to the second device.In addition, all possible places, use phase in schema and embodiment
Element/component/step with label represents same or like part.Identical label is used in different embodiments or uses identical use
Element/component/step of language can be with cross-referenced related description.
Fig. 1 is please referred to, Fig. 1 is the schematic diagram for illustrating a kind of display device according to one embodiment of the invention.Display device 100
Including display panel 110, multiple multiplexers (e.g. multiplexer MUX2_1~MUX2_2) and driver 120.Wherein, it shows
Multiple display pixels (e.g. display pixel P1_1~P3_1, display pixel P1_2~P3_2, display pixel in panel 110
N1_1~N3_1, display pixel N1_2~N3_2) it is that multiple data line (e.g. data lines and are configured at matrix arrangement
D1~D4) with the staggered place of multiple grid lines (e.g. 1~G3 of gate lines G).Also, each display pixel can be according to each grid
Pole driving signal (e.g. gate drive signal GS1~GS3) is connected corresponding transistor (e.g. thin film transistor (TFT)).
Multiple multiplexers of the present embodiment can be respectively set between corresponding data terminal and data line, and each
Multiplexer is made of switch SW1 (also known as first switch) and switch SW2 (also known as second switch).For example,
The switch SW1 of multiplexer MUX2_1 (also known as the first multiplexer) is coupled to data terminal ST1 (also known as the first data terminal) and number
According between line D1, and the switch SW1 of multiplexer MUX2_1 can be according to control signal SC1 provided by driver 120 (also known as
First control signal) and be switched on or disconnect.In other words, when display device 100 operates in during pixel charges and control signal
When SC1 is set to enabled status, multiplexer MUX2_1 can be according to the guiding path of switch SW1, to provide pixel voltage to right
Display pixel P1_1~the P3_1 (also known as the first display pixel) answered.
On the other hand, the switch SW2 of multiplexer MUX2_1 is coupled between data terminal ST1 and data line D3, and multiplexing
The switch SW2 of device MUX2_1 can be led according to control signal SC2 (also known as second control signal) provided by driver 120
On-off is opened.In other words, when display device 100 operates in during pixel charges and control signal SC2 is set to enabled status
When, multiplexer MUX2_1 can according to the guiding path of switch SW2, with provide pixel voltage to corresponding display pixel P1_2~
P3_2 (also known as the first display pixel).
Opposite, in multiplexer MUX2_2 (also known as the second multiplexer), the switch SW1 of multiplexer MUX2_2 is coupled to
Between data terminal ST2 (also known as the second data terminal) and data line D2, and the switch SW1 of multiplexer MUX2_2 also can be according to drive
It controls signal SC1 provided by dynamic device 120 and is switched on or disconnects.In other words, when display device 100 operates in the pixel charging phase
Between and control signal SC1 when being set to enabled status, multiplexer MUX2_2 can be according to the guiding path of switch SW1, with offer
Pixel voltage is to corresponding display pixel N1_1~N3_1 (also known as the second display pixel).
On the other hand, the switch SW2 of multiplexer MUX2_2 is coupled between data terminal ST2 and data line D4, and multiplexing
The switch SW2 of device MUX2_2 also can be switched on or disconnect according to control signal SC2 provided by driver 120.In other words, when
During display device 100 operates in pixel charging and control signal SC2 is when being set to enabled status, and multiplexer MUX2_2 can be according to
According to the guiding path of switch SW2, to provide pixel voltage to corresponding display pixel N1_2~N3_2 (the also known as second display picture
Element).
It is noted that in display panel 110, each display pixel P1_1~P3_1 and display pixel P1_2~
P3_2 is respectively provided with the first display polarity (e.g. positive display polarity), and each display pixel N1_1~N3_1 and display
Pixel N1_2~N3_2 is respectively provided with the second display polarity (e.g. negative display polarity).Wherein, the first display polarity
It is opposite each other with the second display polarity.
It should be noted, one skilled in the art can determine number according to the design requirement of display device 100
According to line, grid line, gate drive signal, display pixel, multiplexer, switch, data terminal and the quantity for controlling signal.For convenience
Illustrate, the present embodiment is with data line D1~D4,1~G3 of gate lines G, gate drive signal GS1~GS3, multiplexer MUX2_1
~MUX2_2, switch SW1~SW2 and data terminal ST1~ST2 are illustrated as example the present invention is not limited to above-mentioned
Quantity.
In the present embodiment, driver 120 has multiple data terminals (e.g. data terminal ST1, ST2), and can pass through
These data terminals are to be respectively connected to multiple multiplexers, so that driver 120 can pass pixel voltage via each multiplexer
It send to each corresponding display pixel, to charge to each corresponding display pixel.In addition, driver 120 can be from outside
It receives display data DA1~DAN and captures signal XSTB.Wherein, the acquisition signal XSTB to indicate driver 120 into
The opportunity of row data acquisition.In addition, driver 120 can provide control signal SC1, SC2 to these multiplexers, so that each multiplexing
The switch SW1 and switch SW2 of device can determine its on state according to control signal SC1 and control signal SC2 respectively.
Special one is mentioned that, in display device 100, the present invention can be by source electrode driver or source electrode driver and
The relevant operation of driver 120 is implemented in the combination of sequence controller.About relevant implementation detail subsequent embodiment will
There is relevant statement.
For the details of operation of driver 120, specifically, firstly, when display device 100 through driver 120 come from
When outside receives multiple display data DA1~DAN (wherein N is the positive integer greater than 1), driver 120 can be first aobvious according to these
Registration generates multiple first polarity datas and multiple second polarity datas according to the polarity of DA1~DAN.For example, it drives
These can be shown that the display data definition in data DA1~DAN with positive polarity is the first polarity data by device 120, and
These are shown that the display data definition in data DA1~DAN with negative polarity is the second polarity data.
Then, driver 120 can according to the display data for belonging to positive polarity multiple first polarity datas and belong to negative
Multiple second polarity datas of polar display data are average electric to generate the first polarity average voltage and the second polarity respectively
Pressure.For example, for the first polarity data, driver 120 can by the pixel voltage in each first polarity data into
Row is added, and calculates these the first poles according to the total number of total pixel voltage after being added and these the first polarity datas
First polarity average voltage of property data.Opposite, for the second polarity data, driver 120 also can be by each second
Pixel voltage in polarity data is added, and according to the total of total pixel voltage after being added and these the second polarity datas
Number calculates the second polarity average voltage of these the second polarity datas.
Specifically, in the present embodiment, when each pixel that display device 100 operates in display time interval charges the phase
Between when, driver 120 can according to control signal SC1, SC2 time sequence status, to determine the picture in each first polarity data
Plain voltage carries out charging action to corresponding first display pixel (that is, display pixel P1_1~P3_1, P1_2~P3_2), and
And by the pixel voltage in each second polarity data to corresponding second display pixel (that is, display pixel N1_1~N3_1,
N1_2~N3_2) carry out charging action.
It is noted that in the present embodiment, the preceding preliminary filling during display device 100 operates in each pixel charging
When during electricity, driver 120 can provide the first polarity average voltage to data terminal ST1, with electronic to data terminal ST1 progress preliminary filling
Make, and provides the second polarity average voltage to data terminal ST2, to carry out pre-charge operation to data terminal ST2.In other words, originally
Embodiment can be before (that is, during the precharge) each switch SW1, SW2 be connected, first with driver 120 to data
The movement that end ST1, ST2 are pre-charged, so that when each switch SW1, SW2 conducting (that is, during the pixel charges),
Noise caused by first polarity data and the second polarity data substantial can be cancelled out each other, and then promote display device
100 task performance.
Fig. 2A and Fig. 2 B is the display device according to Fig. 1 embodiment of the present invention respectively under the different sequence of switches
Movement oscillogram.Details of operation about display device 100.Referring to Fig. 1 and Fig. 2A, and with multiplexer MUX2_1
And display pixel P1_1~P3_1, P1_2~P3_2 are as example.Wherein, display time interval TSA can be divided into multiple
TC1~TC6 during TP1~TP6 and multiple pixels charge during precharge.In addition, in the embodiment of Fig. 2A, multiplexer
MUX2_1 can make switch SW1, SW2 conducting interactively with each other according to control signal SC1, SC2.
Specifically, during the precharge during display device 100 operates in pixel charging before TC1 when TP1, driver
The first above-mentioned polarity average voltage VAVG1 can be provided to data terminal ST1 in advance by 120 output signal Sout, to data
The movement that end ST1 is pre-charged.Then, during display device 100 operates in pixel charging when TC1, gate drive signal
GS1 and control signal SC1 can be set to enabled status (e.g. high-voltage level), and gate drive signal GS2,
GS3 and control signal SC2 can be set to disabled state (e.g. low voltage level), so that the switch of multiplexer MUX2_1
SW1 can be switched on and switch SW2 can be disconnected.In the case, the output signal Sout of driver 120 can provide the first polarity
The pixel voltage DP1_1 of data to corresponding display pixel P1_1, to charge to display pixel P1_1.
On the other hand, during the precharge during display device 100 operates in pixel charging before TC2 when TP2, driver
The first above-mentioned polarity average voltage VAVG1 can be provided to data terminal ST1 in advance by 120 output signal Sout, to data
The movement that end ST1 is pre-charged.Then, during display device 100 operates in pixel charging when TC2, gate drive signal
GS1 and control signal SC2 can be set to enabled status (e.g. high-voltage level), and gate drive signal GS2,
GS3 and control signal SC1 can be set to disabled state (e.g. low voltage level), so that the switch of multiplexer MUX2_1
SW2 can be switched on and switch SW1 can be disconnected.In the case, the output signal Sout of driver 120 can provide the first polarity
The pixel voltage DP1_2 of data to corresponding display pixel P1_2, to charge to display pixel P1_2.
On the other hand, during the precharge during display device 100 operates in pixel charging before TC3 when TP3, driver
The first above-mentioned polarity average voltage VAVG1 can be provided to data terminal ST1 in advance by 120 output signal Sout, to data
The movement that end ST1 is pre-charged.Then, during display device 100 operates in pixel charging when TC3, gate drive signal
GS2 and control signal SC1 can be set to enabled status (e.g. high-voltage level), and gate drive signal GS1,
GS3 and control signal SC2 can be set to disabled state (e.g. low voltage level), so that the switch of multiplexer MUX2_1
SW1 can be switched on and switch SW2 can be disconnected.In the case, the output signal Sout of driver 120 can provide the first polarity
The pixel voltage DP2_1 of data to corresponding display pixel P2_1, to charge to display pixel P2_1.
On the other hand, during the precharge during display device 100 operates in pixel charging before TC4 when TP4, driver
The first above-mentioned polarity average voltage VAVG1 can be provided to data terminal ST1 in advance by 120 output signal Sout, to data
The movement that end ST1 is pre-charged.Then, during display device 100 operates in pixel charging when TC4, gate drive signal
GS2 and control signal SC2 can be set to enabled status (e.g. high-voltage level), and gate drive signal GS1,
GS3 and control signal SC1 can be set to disabled state (e.g. low voltage level), so that the switch of multiplexer MUX2_1
SW2 can be switched on and switch SW1 can be disconnected.In the case, the output signal Sout of driver 120 can provide the first polarity
The pixel voltage DP2_2 of data to corresponding display pixel P2_2, to charge to display pixel P2_2.
On the other hand, during the precharge during display device 100 operates in pixel charging before TC5 when TP5, driver
The first above-mentioned polarity average voltage VAVG1 can be provided to data terminal ST1 in advance by 120 output signal Sout, to data
The movement that end ST1 is pre-charged.Then, during display device 100 operates in pixel charging when TC5, gate drive signal
GS3 and control signal SC1 can be set to enabled status (e.g. high-voltage level), and gate drive signal GS1,
GS2 and control signal SC2 can be set to disabled state (e.g. low voltage level), so that the switch of multiplexer MUX2_1
SW1 can be switched on and switch SW2 can be disconnected.In the case, the output signal Sout of driver 120 can provide the first polarity
The pixel voltage DP3_1 of data to corresponding display pixel P3_1, to charge to display pixel P3_1.
On the other hand, during the precharge during display device 100 operates in pixel charging before TC6 when TP6, driver
The first above-mentioned polarity average voltage VAVG1 can be provided to data terminal ST1 in advance by 120 output signal Sout, to data
The movement that end ST1 is pre-charged.Then, during display device 100 operates in pixel charging when TC6, gate drive signal
GS3 and control signal SC2 can be set to enabled status (e.g. high-voltage level), and gate drive signal GS1,
GS2 and control signal SC1 can be set to disabled state (e.g. low voltage level), so that the switch of multiplexer MUX2_1
SW2 can be switched on and switch SW1 can be disconnected.In the case, the output signal Sout of driver 120 can provide the first polarity
The pixel voltage DP3_2 of data to corresponding display pixel P3_2, to charge to display pixel P3_2.
Should be noted, in the embodiment of Fig. 2A, for multiplexer MUX2_2 and display pixel N1_1~N3_1,
Operative relationship between N1_2~N3_2 and driver 120 can be directed to multiplexer MUX2_1 and display pixel P1_1 according to above-mentioned
Operative relationship between~P3_1, P1_2~P3_2 and driver 120 is operated, herein without repeating more.
On the other hand, in the embodiment of Fig. 2 B, display time interval TSB can equally be divided into multiple precharge phases
Between TP1~TP6 and multiple pixels charge during TC1~TC6.Different from Fig. 2A embodiment, in the present embodiment, multiplexing
Device MUX2_1 can make turn-on sequence switch SW1 → switch SW2 → switch of switch SW1, SW2 according to control signal SC1, SC2
SW2 → switch SW1 → switch SW1 → switch SW2.
Below referring to Fig. 1 and Fig. 2 B, specifically, the TC1 during display device 100 operates in pixel charging
During preceding precharge when TP1, the output signal Sout of driver 120 can be in advance by the first above-mentioned polarity average voltage
VAVG1 is provided to data terminal ST1, with the movement being pre-charged to data terminal ST1.Then, when display device 100 operates in picture
During element charging when TC1, gate drive signal GS1 and control signal SC1 can be set to enabled status (e.g. high voltage
Level), and gate drive signal GS2, GS3 and control signal SC2 can be set to disabled state (e.g. low-voltage electricity
It is flat) so that the switch SW1 of multiplexer MUX2_1 can be switched on and switch SW2 can be disconnected.In the case, driver 120
Output signal Sout can provide the pixel voltage DP1_1 to corresponding display pixel P1_1 of the first polarity data, to display picture
Plain P1_1 charges.
On the other hand, during the precharge during display device 100 operates in pixel charging before TC2 when TP2, driver
The first above-mentioned polarity average voltage VAVG1 can be provided to data terminal ST1 in advance by 120 output signal Sout, to data
The movement that end ST1 is pre-charged.Then, during display device 100 operates in pixel charging when TC2, gate drive signal
GS1 and control signal SC2 can be set to enabled status (e.g. high-voltage level), and gate drive signal GS2,
GS3 and control signal SC1 can be set to disabled state (e.g. low voltage level), so that the switch of multiplexer MUX2_1
SW2 can be switched on and switch SW1 can be disconnected.In the case, the output signal Sout of driver 120 can provide the first polarity
The pixel voltage DP1_2 of data to corresponding display pixel P1_2, to charge to display pixel P1_2.
On the other hand, during the precharge during display device 100 operates in pixel charging before TC3 when TP3, driver
The first above-mentioned polarity average voltage VAVG1 can be provided to data terminal ST1 in advance by 120 output signal Sout, to data
The movement that end ST1 is pre-charged.Then, during display device 100 operates in pixel charging when TC3, gate drive signal
GS2 and control signal SC2 can be set to enabled status (e.g. high-voltage level), and gate drive signal GS1,
GS3 and control signal SC1 can be set to disabled state (e.g. low voltage level), so that the switch of multiplexer MUX2_1
SW2 can be switched on and switch SW1 can be disconnected.In the case, the output signal Sout of driver 120 can provide the first polarity
The pixel voltage DP2_2 of data to corresponding display pixel P2_2, to charge to display pixel P2_2.
On the other hand, during the precharge during display device 100 operates in pixel charging before TC4 when TP4, driver
The first above-mentioned polarity average voltage VAVG1 can be provided to data terminal ST1 in advance by 120 output signal Sout, to data
The movement that end ST1 is pre-charged.Then, during display device 100 operates in pixel charging when TC4, gate drive signal
GS2 and control signal SC1 can be set to enabled status (e.g. high-voltage level), and gate drive signal GS1,
GS3 and control signal SC2 can be set to disabled state (e.g. low voltage level), so that the switch of multiplexer MUX2_1
SW1 can be switched on and switch SW2 can be disconnected.In the case, the output signal Sout of driver 120 can provide the first polarity
The pixel voltage DP2_1 of data to corresponding display pixel P2_1, to charge to display pixel P2_1.
On the other hand, during the precharge during display device 100 operates in pixel charging before TC5 when TP5, driver
The first above-mentioned polarity average voltage VAVG1 can be provided to data terminal ST1 in advance by 120 output signal Sout, to data
The movement that end ST1 is pre-charged.Then, during display device 100 operates in pixel charging when TC5, gate drive signal
GS3 and control signal SC1 can be set to enabled status (e.g. high-voltage level), and gate drive signal GS1,
GS2 and control signal SC2 can be set to disabled state (e.g. low voltage level), so that the switch of multiplexer MUX2_1
SW1 can be switched on and switch SW2 can be disconnected.In the case, the output signal Sout of driver 120 can provide the first polarity
The pixel voltage DP3_1 of data to corresponding display pixel P3_1, to charge to display pixel P3_1.
On the other hand, during the precharge during display device 100 operates in pixel charging before TC6 when TP6, driver
The first above-mentioned polarity average voltage VAVG1 can be provided to data terminal ST1 in advance by 120 output signal Sout, to data
The movement that end ST1 is pre-charged.Then, during display device 100 operates in pixel charging when TC6, gate drive signal
GS3 and control signal SC2 can be set to enabled status (e.g. high-voltage level), and gate drive signal GS1,
GS2 and control signal SC1 can be set to disabled state (e.g. low voltage level), so that the switch of multiplexer MUX2_1
SW2 can be switched on and switch SW1 can be disconnected.In the case, the output signal Sout of driver 120 can provide the first polarity
The pixel voltage DP3_2 of data to corresponding display pixel P3_2, to charge to display pixel P3_2.
Should be noted, in the embodiment of Fig. 2 B, for multiplexer MUX2_2 and display pixel N1_1~N3_1,
Operative relationship between N1_2~N3_2 and driver 120 can be directed to multiplexer MUX2_1 and display pixel P1_1 according to above-mentioned
Operative relationship between~P3_1, P1_2~P3_2 and driver 120 is operated, herein without repeating more.
Description content according to above-mentioned Fig. 2A and Fig. 2 B is it is known that in driver 120 during the charging of each pixel
When charging to corresponding display pixel, during the precharge that the embodiment of the present invention can be preceding during each pixel charges,
Driver 120 is set to provide the first polarity average voltage and the second polarity average voltage respectively to data terminal S1 and data terminal
S2 is pre-charged.In this way, when each switch SW1, SW2 conducting (that is, during the pixel charges), the first polarity
Noise caused by data and the second polarity data substantial can be cancelled out each other, and then promote the work of display device 100
Make efficiency.
Fig. 3 is the schematic diagram for illustrating a kind of display device according to another embodiment of the present invention.Referring to Fig. 1 and figure
3, in this example it is shown that the element in device 300 is approximately identical to the element in display device 100, wherein similar elements
Use same or similar label.Different from Fig. 1 embodiment, in Fig. 3 embodiment, each multiplexer (e.g. multiplexer
MUX3_1~MUX3_2) it is to be made of switch SW1, switch SW2 and switch SW3 (also known as third switch).For example,
The switch SW1 of multiplexer MUX3_1 is coupled between data terminal ST1 and data line D1, and the switch SW1 of multiplexer MUX3_1
It can be switched on or disconnect according to control signal SC1 provided by driver 320.The switch SW2 of multiplexer MUX3_1 is coupled to
Between data terminal ST1 and data line D3, and the switch SW2 of multiplexer MUX3_1 can be controlled according to provided by driver 320
Signal SC2 and be switched on or disconnect.The switch SW3 of multiplexer MUX3_1 is coupled between data terminal ST1 and data line D5, and
The switch SW3 of multiplexer MUX3_1 can be switched on or disconnect according to control signal SC3 provided by driver 320.
Opposite, in multiplexer MUX3_2, the switch SW1 of multiplexer MUX3_2 is coupled to data terminal ST2 and data line
Between D2, and the switch SW1 of multiplexer MUX3_2 can according to provided by driver 320 control signal SC1 and be switched on or
It disconnects.The switch SW2 of multiplexer MUX3_2 is coupled between data terminal ST2 and data line D4, and multiplexer MUX3_2 is opened
Closing SW2 can be switched on or disconnect according to control signal SC2 provided by driver 320.The switch SW3 coupling of multiplexer MUX3_2
It is connected between data terminal ST2 and data line D6, and the switch SW3 of multiplexer MUX3_2 can be according to provided by driver 320
It controls signal SC3 and is switched on or disconnects.
It should be noted, in the fig. 3 embodiment, between multiplexer MUX3_1, MUX3_2 and driver 320
Operative relationship can be operated according to the description content of Fig. 2A embodiment, herein without repeating more.
Fig. 4 is the schematic diagram for illustrating a kind of display device according to yet another embodiment of the invention.Referring to Fig. 1 and figure
4, in the present embodiment, driver 420 includes sequence controller 421 and source electrode driver 422.Wherein, source electrode driver 422
It is coupled to sequence controller 421.It is noted that the relevant operation movement of driver 420 can be identical to the driver of Fig. 1
120.Different from previous embodiment, the driver 420 of the present embodiment is through sequence controller 421 and source electrode driver
422 combination acts to complete the relevant operation of driver 120.
For the details of operation of driver 420, specifically, firstly, driver 420 can use sequence controller 421
To receive multiple display data DA1~DAN from outside.Then, sequence controller 421 can show data DA1~DAN according to these
To generate multiple first polarity datas and multiple second polarity datas.For example, these can be shown number by driver 420
It is the first polarity data according to the display data definition in DA1~DAN with positive polarity, and these is shown into data DA1~DAN
In with negative polarity display data definition be the second polarity data.
Then, sequence controller 421 can provide respectively according to these first polarity datas and the second polarity data
One polarity average value P A1 and the second polarity average value P A2 is to source electrode driver 422.Furthermore, it is understood that being directed to the first polar number
For, the pixel voltage in each first polarity data can be added by sequence controller 421, and according to after being added total
The total number of pixel voltage and these the first polarity datas calculates the first polarity average value of these the first polarity datas
PA1.Opposite, for the second polarity data, sequence controller 421 also can be by the pixel electricity in each second polarity data
Pressure is added, and according to the total number of total pixel voltage after being added and these the second polarity datas come calculate these the
Second polarity average value P A2 of two polarity datas.
In other words, in the present embodiment, sequence controller 421 can be about to received display data DA1~DAN points certainly
For multiple first polarity datas and multiple second polarity datas, and calculate separately out about these the first polarity datas
One polarity average value P A1 and the second polarity average value P A2 about these the second polarity datas.Whereby, when driver 420 is grasped
When during making in each pixel charging during preceding precharge, source electrode driver 422 can be according to the first polarity average value P A1
And the second polarity average value P A2 provides the first polarity average voltage and the second polarity average voltage to data respectively
Hold ST1~STN, the movement being pre-charged respectively to data terminal ST1~STN.
Fig. 5 is the operational flowchart according to the sequence controller of the display device of Fig. 4 embodiment of the present invention.Referring to
Fig. 4 and Fig. 5, specifically, in step S510, sequence controller 421 can be activated.In step S520, timing control
Data actuating signal (Data Enable Signal) in device 421 processed can be enabled.In step S530, sequence controller
421 can receive multiple display data DA1~DAN according to the data actuating signal being enabled, and according to these displays
The polarity of data DA1~DAN to generate multiple first polarity datas with positive polarity and with the multiple of negative polarity respectively
Second polarity data.
Then, in step S540, the data actuating signal in sequence controller 421 can be disabled.In step S550
In, sequence controller 421 can generate the first polarity according to these first polarity datas and these second polarity datas respectively
Average value and the second polarity average value are to source electrode driver 422.In step S560, sequence controller 421, which may determine that, is
It is no to be closed, wherein when sequence controller 421 is not closed, sequence controller 421 can execute the operation step of step S520
Suddenly.Opposite, when sequence controller 421 is closed, sequence controller 421 can execute the operating procedure of step S570.?
In step S570, sequence controller 421 can terminate the operating procedure of above-mentioned steps S510~S560.
Fig. 6 is the method flow diagram according to the driving method of the display device of one embodiment of the invention.In step S610,
Display device can provide the first pixel voltage to multiple first display pixels during pixel charging by the first multiplexer.In step
In S620, display device can be provided the second pixel voltage to multiple second display pictures by the second multiplexer during pixel charging
Element.In step S630, display device can by driver according to it is multiple display data polarity to generate multiple first polar numbers
Accordingly and multiple second polarity datas.In step S640, display device can be by driver respectively according to these the first polar numbers
Accordingly and these second polarity datas are to generate the first polarity average voltage and the second polarity average voltage.In step S650
In, display device can by driver pixel charging during before precharge during, to provide the first polarity average voltage respectively
And second polarity average voltage to be pre-charged to the first data terminal and the second data terminal.
About the implementation detail of above-mentioned steps, has explanation in detail in the foregoing embodiments, herein without repeating more.
In conclusion display device of the invention can receive multiple display data using driver, and can be according to these
Show that these display data are divided into the first polarity data of the display data for belonging to positive polarity and belonged to by the polarity of data
Second polarity data of the display data of negative polarity.Also, the driver can be according to the first polarity data and the second polarity
Data generate the first polarity average voltage and the second polarity average voltage respectively.In this way, when display device operates in
Pixel charge during before precharge during when, the driver can provide the first polarity average voltage and described respectively
Second polarity average voltage is to corresponding data terminal, so that noise caused by the first polarity data and the second polarity data can
It is substantial before switch conduction to be cancelled out each other, and then promote the task performance of display device.
Although the present invention has been disclosed by way of example above, it is not intended to limit the present invention., any technical field
Middle tool usually intellectual, without departing from the spirit and scope of the present invention, when can make some changes and embellishment, thus it is of the invention
Protection scope should be defined by the scope of the appended claims.
Claims (14)
1. a kind of display device characterized by comprising
One first multiplexer is arranged between one first data terminal and multiple first display pixels, to charge in a pixel
Period provides one first pixel voltage to respectively first display pixel；
One second multiplexer is arranged between one second data terminal and multiple second display pixels, to charge in the pixel
Period provides one second pixel voltage to respectively second display pixel；And
One driver, to:
Polarity according to multiple display data is to generate multiple first polarity datas and multiple second polarity datas；
Respectively according to those first polarity datas and those second polarity datas with generate one first polarity average voltage and
One second polarity average voltage；And
During a precharge before during pixel charging, the first polarity average voltage and second polarity are provided respectively
Average voltage is to be pre-charged first data terminal and second data terminal.
2. display device as described in claim 1, which is characterized in that the driver includes one source driver.
3. display device as described in claim 1, which is characterized in that the driver includes:
Time schedule controller, the polarity according to those display data is to generate those first polarity datas and those second polarity
Data, and respectively according to those first polarity datas and those second polarity datas with generate one first polarity average value with
And one second polarity average value；And
One source driver is coupled to the sequence controller, and respectively according to the first polarity average value and second polarity
Average value generates the first polarity average voltage and the second polarity average voltage.
4. display device as described in claim 1, which is characterized in that first multiplexer and second multiplexer are wherein
One of have a first switch and a second switch, the first switch receive a first control signal, and according to this first control
Signal processed is to be switched on or disconnect, and the second switch receives a second control signal, and according to the second control signal with quilt
It is turned on or off.
5. display device as described in claim 1, which is characterized in that first multiplexer and second multiplexer are wherein
One of have a first switch, a second switch and a third switch, the first switch receive a first control signal, and according to
According to the first control signal to be switched on or disconnect, which receives a second control signal, and according to second control
To be switched on or disconnect, third switch receives a third and controls signal signal, and controls signal according to the third to be switched on
Or it disconnects.
6. display device as described in claim 1, which is characterized in that respectively first display pixel has one first display pole
Property, and respectively second display pixel has one second display polarity.
7. display device as claimed in claim 6, which is characterized in that the first display polarity and the second display polarity are each other
On the contrary.
8. a kind of driving method of display device characterized by comprising
One first pixel voltage is provided to multiple first display pixels during pixel charging by one first multiplexer；
One second pixel voltage is provided to multiple second display pixels during pixel charging by one second multiplexer；
By a driver according to multiple polarity for showing data to generate multiple first polarity datas and multiple second polar numbers
According to；
It is put down respectively according to those first polarity datas and those second polarity datas with generating one first polarity by the driver
Equal voltage and one second polarity average voltage；
By the driver the pixel charging during before one precharge during, with provide respectively the first polarity average voltage with
And the second polarity average voltage is to be pre-charged one first data terminal and one second data terminal.
9. driving method as claimed in claim 8, which is characterized in that the driver is one source driver.
10. driving method as claimed in claim 8, which is characterized in that the driver includes time schedule controller and a source
Driver, wherein
Show the polarity of data to generate those first polarity datas and those second poles according to those by the sequence controller
Property data, and respectively according to those first polarity datas and those second polarity datas to generate one first polarity average value
And one second polarity average value；And
First polarity is generated according to the first polarity average value and the second polarity average value respectively by the source electrode driver
Average voltage and the second polarity average voltage.
11. driving method as claimed in claim 8, which is characterized in that its of first multiplexer and second multiplexer
One of have a first switch and a second switch, the first switch receive a first control signal, and according to this first
Control signal be switched on or disconnect, and the second switch receive a second control signal, and according to the second control signal with
It is switched on or disconnects.
12. driving method as claimed in claim 8, which is characterized in that its of first multiplexer and second multiplexer
One of have a first switch, a second switch and a third switch, the first switch receive a first control signal, and
According to the first control signal to be switched on or disconnect, which receives a second control signal, and according to second control
Signal processed is to be switched on or disconnect, and third switch receives a third and controls signal, and according to third control signal to be led
On-off is opened.
13. driving method as claimed in claim 8, which is characterized in that respectively first display pixel has one first display pole
Property, and respectively second display pixel has one second display polarity.
14. driving method as claimed in claim 13, which is characterized in that the first display polarity and the second display polarity are mutual
It is opposite.
Applications Claiming Priority (2)
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| TW107141093 | 2018-11-19 | ||
| TW107141093A TWI707335B (en) | 2018-11-19 | 2018-11-19 | Display device and driving method thereof |
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| CN110060622A true CN110060622A (en) | 2019-07-26 |
| CN110060622B CN110060622B (en) | 2022-10-28 |
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| TW (1) | TWI707335B (en) |
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| TW202020849A (en) | 2020-06-01 |
| TWI707335B (en) | 2020-10-11 |
| CN110060622B (en) | 2022-10-28 |
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