CN108428437B - Public voltage driving circuit, control method thereof and display device - Google Patents
Public voltage driving circuit, control method thereof and display device Download PDFInfo
- Publication number
- CN108428437B CN108428437B CN201810292738.8A CN201810292738A CN108428437B CN 108428437 B CN108428437 B CN 108428437B CN 201810292738 A CN201810292738 A CN 201810292738A CN 108428437 B CN108428437 B CN 108428437B
- Authority
- CN
- China
- Prior art keywords
- common voltage
- power switch
- switch tube
- driving circuit
- resistor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000000007 visual effect Effects 0.000 claims abstract description 24
- 239000003990 capacitor Substances 0.000 claims description 9
- 230000005669 field effect Effects 0.000 claims description 3
- 229910044991 metal oxide Inorganic materials 0.000 claims description 3
- 150000004706 metal oxides Chemical class 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims description 3
- 239000004065 semiconductor Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 9
- 239000004973 liquid crystal related substance Substances 0.000 abstract description 7
- 230000009471 action Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Images
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
- G09G3/34—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 by control of light from an independent source
- G09G3/36—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 by control of light from an independent source using liquid crystals
-
- 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
- G09G3/34—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 by control of light from an independent source
- G09G3/36—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 by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3696—Generation of voltages supplied to electrode drivers
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Liquid Crystal Display Device Control (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention discloses a common voltage driving circuit, a control method thereof and a display device, wherein the common voltage driving circuit comprises a first power switch tube and a second power switch tube which are connected in parallel; the first end of the first power switch tube is connected with a first control signal, the second end of the first power switch tube is connected with a signal input end, and the third end of the first power switch tube is connected with a signal output end; the first end of the second power switch tube is connected with a second control signal, the second end of the second power switch tube is connected with the signal output end, and the third end of the second power switch tube is connected with the ground end. According to the common voltage driving circuit, the control method thereof and the display device, the power switch tube of the common voltage driving circuit is controlled, so that the output common voltage has a certain bias voltage, the problem of charge residue or ghost when the narrow visual angle of the liquid crystal display device is switched to the wide visual angle is solved, and the visual watching effect of a user is improved.
Description
Technical Field
The invention relates to the technical field of display, in particular to a common voltage driving circuit, a control method thereof and a display device.
Background
Since the lcd has many advantages such as light weight, energy saving, and no radiation, it is widely used in electronic devices such as televisions, Personal computers, tablet computers, PDAs (Personal Digital assistants), mobile phones, and Digital cameras.
The liquid crystal display device has different operation modes such as a wide and narrow viewing angle mode and the like. When the lcd device switches from a narrow viewing angle to a wide viewing angle, the charges in the display panel need to be switched, and the user may find the charge residue in a bright picture (such as a white picture) or may find the image residue (i.e. the image residue) in the wide viewing angle, which makes the user have a poor visual effect.
In view of the above problems, the conventional solution is to intercept the input signal of the front end system and forcibly insert a black picture by the timing controller when switching between wide and narrow viewing angles. However, this solution has problems: an MCU (Micro Controller Unit) needs to be added to the timing Controller, and some functions need to be sacrificed to be realized, for example: ACC (Accurate Color Calibration) function; in addition, forced insertion of a black picture after PSR (Self Refresh signal) of the timing controller is turned on cannot solve the above-described problem.
Disclosure of Invention
The invention mainly aims to provide a common voltage driving circuit, a control method thereof and a display device, and aims to solve the problem of image sticking when a liquid crystal display device is switched from a narrow viewing angle to a wide viewing angle in the prior art.
In order to achieve the above object, a first aspect of embodiments of the present invention provides a common voltage driving circuit, where the common voltage driving circuit includes a first power switch tube and a second power switch tube connected in parallel;
the first end of the first power switch tube is connected with a first control signal, the second end of the first power switch tube is connected with a signal input end, and the third end of the first power switch tube is connected with a signal output end;
the first end of the second power switch tube is connected with a second control signal, the second end of the second power switch tube is connected with the signal output end, and the third end of the second power switch tube is connected with the ground end.
Optionally, the common voltage driving circuit further includes a first resistor;
the first resistor is connected between the second end of the first power switch tube and the signal input end in series.
Optionally, the common voltage driving circuit further includes a second resistor and a third resistor;
the second resistor is connected between the second end of the second power switch tube and the signal output end in series;
the third resistor is connected in series between the first end of the second power switch tube and the second control signal.
Optionally, the common voltage driving circuit further includes a fourth resistor and a fifth resistor;
one end of the fourth resistor is connected with the signal input end, and the other end of the fourth resistor is connected with the signal output end;
one end of the fifth resistor is connected with the signal output end, and the other end of the fifth resistor is connected with the ground end.
Optionally, the common voltage driving circuit further includes an adjustable resistor;
the first end of the adjustable resistor is connected with the fourth resistor, the second end of the adjustable resistor is connected with the fifth resistor, and the third end of the adjustable resistor is connected with the signal output end.
Optionally, the common voltage driving circuit further includes a filter capacitor;
one end of the filter capacitor is connected with the signal output end, and the other end of the filter capacitor is connected with the ground end.
Optionally, the first power switch tube and the second power switch tube are both metal oxide semiconductor field effect transistors MOSFETs.
In addition, to achieve the above object, a second aspect of embodiments of the present invention provides a display device, including the common voltage driving circuit according to the first aspect.
Furthermore, to achieve the above object, a third aspect of embodiments of the present invention provides a method for controlling a common voltage driving circuit, the method including:
acquiring a switching signal from a narrow visual angle to a wide visual angle;
generating a first control signal and a second control signal according to the switching signal;
and the generated first control signal and second control signal are respectively used for driving a first power switch tube and a second power switch tube of the common voltage driving circuit.
Optionally, the switching signal from the narrow viewing angle to the wide viewing angle is acquired by:
and detecting a rising edge signal or a falling edge signal of the mixed visual angle.
According to the common voltage driving circuit, the control method thereof and the display device provided by the embodiment of the invention, the power switch tube of the common voltage driving circuit is controlled, so that the output common voltage has a certain bias voltage, the problem of charge residue or ghost when the narrow visual angle of the liquid crystal display device is switched to the wide visual angle is solved, and the visual watching effect of a user is improved.
Drawings
FIG. 1 is a schematic diagram of a common voltage driving circuit according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of another structure of a common voltage driving circuit according to an embodiment of the present invention;
FIG. 3 is a flowchart illustrating a control method of a common voltage driving circuit according to an embodiment of the present invention;
fig. 4 is a schematic timing structure diagram of a common voltage driving circuit according to an embodiment of the invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
Implementation of various embodiments of the present invention will now be described with reference to the accompanying drawings. In the following description, suffixes such as "module", "component", or "unit" used to denote elements are used only for facilitating the explanation of the present invention, and have no specific meaning in themselves.
The use of the terms "a" and "an" and "the" and similar referents in the context of describing the invention (especially in the context of the following claims) are to be construed to cover both the singular and the plural, unless otherwise indicated herein or clearly contradicted by context. The terms "comprising," "having," "including," and "containing" are to be construed as open-ended terms, unless otherwise noted.
First embodiment
As shown in fig. 1, a first embodiment of the present invention provides a common voltage driving circuit, which includes a first power switch Q1 and a second power switch Q2 connected in parallel;
a first end (shown as 1 in the figure, and similar to the following) of the first power switch Q1 is connected to a first control signal Ctrl1, a second end of the first power switch Q1 is connected to a signal input terminal AVDD, and a third end of the first power switch Q1 is connected to a signal output terminal Vcom;
a first end of the second power switch Q2 is connected to a second control signal Ctrl2, a second end of the second power switch Q2 is connected to a signal output end Vcom, and a third end of the second power switch Q2 is connected to a ground end.
In this embodiment, the first power switch and the second power switch are both Metal-oxide Semiconductor Field Effect transistors (MOSFETs). The first end of the power switch tube is the grid electrode of the MOSFET, the second end of the power switch tube is the drain electrode of the MOSFET, and the third end of the power switch tube is the source electrode of the MOSFET. The MOSFET transistors in fig. 1 and 2 are both N-channel MOSFET transistors, and it is conceivable that the MOSFET transistors in the figures may also be both P-channel MOSFET transistors.
In one embodiment, the common voltage driving circuit further includes a first resistor R1;
the first resistor R1 is connected in series between the second terminal of the first power switch Q1 and the signal input terminal AVDD.
In one embodiment, the common voltage driving circuit further includes a second resistor R2 and a third resistor R3;
the second resistor R2 is connected in series between the second end of the second power switch Q2 and the signal output end Vcom;
the third resistor R3 is connected in series between the first terminal of the second power switch Q2 and the second control signal Ctrl 2.
It should be noted that the first power switch Q1 and the first resistor R1 (shown as 11 in the figure) may be integrated together. The second power switch Q2, the second resistor R2, and the third resistor R3 (shown as 12 in the figure) may also be integrated together.
In one embodiment, the common voltage driving circuit further includes a fourth resistor R4 and a fifth resistor R5;
one end of the fourth resistor R4 is connected to the signal input terminal AVDD, and the other end of the fourth resistor R4 is connected to the signal output terminal Vcom;
one end of the fifth resistor R5 is connected to the signal output terminal Vcom, and the other end of the fifth resistor R5 is connected to the ground terminal.
Referring to fig. 2, further, in this embodiment, the common voltage driving circuit further includes an adjustable resistor VR;
the first end of the adjustable resistor VR is connected with the fourth resistor R4, the second end of the adjustable resistor VR is connected with the fifth resistor R5, and the third end of the adjustable resistor VR is connected with the signal output end Vcom.
Further, the common voltage driving circuit further comprises a filter capacitor C1;
one end of the filter capacitor C1 is connected to the signal output terminal Vcom, and the other end of the filter capacitor C1 is connected to the ground.
To better illustrate the present embodiment, the control procedure of the driving circuit is described below with reference to fig. 4:
the HVA signal in fig. 4 is a Hybrid Viewing Angle (HVA) signal, the high level is a narrow Viewing Angle signal, and the low level is a wide Viewing Angle signal.
When a falling edge signal of the HVA is detected, i.e. the narrow viewing angle is switched to the wide viewing angle, the control signal Ctrl1 and the control signal Ctrl2 are generated by the MCU, the waveforms of which can be referred to as shown in the figure. The control signal Ctrl1 is used to drive the power switch Q1 of the common voltage driving circuit, and the control signal Ctrl2 is used to drive the power switch Q2 of the common voltage driving circuit.
The power switch tubes Q1 and Q2 are driven by a control signal Ctrl1 and a control signal Ctrl2, and a certain bias voltage DeltaV + and DeltaV-exists in the common voltage Vcom, so that the common voltage Vcom can be jittered up and down and the effect of improving picture retention is achieved. The specific value can be determined according to the improvement effect, and is not limited herein.
According to the common voltage driving circuit provided by the embodiment of the invention, the power switch tube of the common voltage driving circuit is controlled, so that the output common voltage has a certain bias voltage, the problem of charge residue or ghost when the narrow visual angle of the liquid crystal display device is switched to the wide visual angle is solved, and the visual watching effect of a user is improved.
Second embodiment
A second embodiment of the present invention provides a display apparatus including the common voltage driving circuit described in the first embodiment.
According to the display device provided by the embodiment of the invention, the power switch tube of the common voltage driving circuit is controlled, so that the output common voltage has a certain bias voltage, the problem of charge residue or ghost when the narrow visual angle of the liquid crystal display device is switched to the wide visual angle is solved, and the visual watching effect of a user is improved.
Third embodiment
Referring to fig. 3, fig. 3 is a control method of a common voltage driving circuit according to a third embodiment of the present invention, and the common voltage driving circuit can refer to the content described in the first embodiment. The method comprises the following steps:
s31, acquiring a switching signal from a narrow visual angle to a wide visual angle;
in the present embodiment, the switching signal from the narrow Viewing Angle to the wide Viewing Angle may be obtained by detecting a rising edge signal or a falling edge signal of a Hybrid Viewing Angle (HVA).
S32, generating a first control signal and a second control signal according to the switching signal;
and S33, respectively using the generated first control signal and second control signal to drive a first power switch tube and a second power switch tube of the common voltage driving circuit.
To better illustrate the present embodiment, the following describes the control procedure of the driving circuit with reference to fig. 1, fig. 2 and fig. 4:
the HVA signal in fig. 4 is a mixed view signal, the high level is a narrow view signal, and the low level is a wide view signal.
When a falling edge signal of the HVA is detected, i.e. the narrow viewing angle is switched to the wide viewing angle, the control signal Ctrl1 and the control signal Ctrl2 are generated by the MCU, the waveforms of which can be referred to as shown in the figure. The control signal Ctrl1 is used to drive the power switch Q1 of the common voltage driving circuit in fig. 1 or fig. 2, and the control signal Ctrl2 is used to drive the power switch Q2 of the common voltage driving circuit.
The power switch tubes Q1 and Q2 are driven by a control signal Ctrl1 and a control signal Ctrl2, and a certain bias voltage DeltaV + and DeltaV-exists in the common voltage Vcom, so that the common voltage Vcom can be jittered up and down and the effect of improving picture retention is achieved. The specific value can be determined according to the improvement effect, and is not limited herein.
According to the control method of the common voltage driving circuit provided by the embodiment of the invention, the power switch tube of the common voltage driving circuit is controlled, so that the output common voltage has a certain bias voltage, the problem of charge residue or ghost when the narrow visual angle of the liquid crystal display device is switched to the wide visual angle is solved, and the visual watching effect of a user is improved.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
While embodiments in accordance with the invention have been described above, these embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments described. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention and various embodiments with various modifications as are suited to the particular use contemplated. The invention is limited only by the claims and their full scope and equivalents.
Claims (8)
1. The common voltage driving circuit is characterized by comprising a first power switch tube, a second power switch tube, a first resistor, a second resistor, a fourth resistor and a fifth resistor, wherein the first power switch tube and the second power switch tube are connected in parallel;
the first end of the first power switch tube is connected with a first control signal, the second end of the first power switch tube is connected with a signal input end through the first resistor, and the third end of the first power switch tube is connected with a signal output end;
the first end of the second power switch tube is connected with a second control signal, the second end of the second power switch tube is connected with the signal output end through the second resistor, and the third end of the second power switch tube is connected with the ground end;
one end of the fourth resistor is connected with the signal input end, and the other end of the fourth resistor is connected with the signal output end;
one end of the fifth resistor is connected with the signal output end, and the other end of the fifth resistor is connected with the ground end;
when the display device is switched from a narrow viewing angle to a wide viewing angle, firstly, the first control signal drives the first power switch tube to enable the common voltage driving circuit to output a first common voltage; then, the second control signal drives the second power switch tube to enable the common voltage driving circuit to output a second common voltage; finally, the first control signal and the second control signal do not drive the corresponding power switch tube so that the common voltage driving circuit outputs a third common voltage; wherein a voltage value of the third common voltage is between a voltage value of the first common voltage and a voltage value of the second common voltage.
2. The common voltage driving circuit according to claim 1, further comprising a third resistor;
the third resistor is connected in series between the first end of the second power switch tube and the second control signal.
3. The common voltage driving circuit according to claim 1, further comprising an adjustable resistor;
the first end of the adjustable resistor is connected with the fourth resistor, the second end of the adjustable resistor is connected with the fifth resistor, and the third end of the adjustable resistor is connected with the signal output end.
4. The common voltage driving circuit according to claim 1, further comprising a filter capacitor;
one end of the filter capacitor is connected with the signal output end, and the other end of the filter capacitor is connected with the ground end.
5. The common voltage driving circuit as claimed in claim 1, wherein said first power switch and said second power switch are both Metal Oxide Semiconductor Field Effect Transistors (MOSFETs).
6. A display device characterized in that the display device comprises the common voltage driving circuit according to any one of claims 1 to 5.
7. A control method for controlling the common voltage driving circuit according to any one of claims 1 to 5, characterized in that the method comprises the steps of:
acquiring a switching signal from a narrow visual angle to a wide visual angle;
generating the first control signal and the second control signal according to the switching signal;
the first control signal drives the first power switch tube to enable the common voltage driving circuit to output the first common voltage;
the second control signal drives the second power switch tube to enable the common voltage driving circuit to output the second common voltage;
the first control signal and the second control signal do not drive the corresponding power switch tube so that the common voltage driving circuit outputs the third common voltage;
wherein a voltage value of the third common voltage is between a voltage value of the first common voltage and a voltage value of the second common voltage.
8. The control method of the common voltage driving circuit according to claim 7, wherein the switching signal from the narrow viewing angle to the wide viewing angle is obtained by:
and detecting a rising edge signal or a falling edge signal of the mixed visual angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810292738.8A CN108428437B (en) | 2018-04-03 | 2018-04-03 | Public voltage driving circuit, control method thereof and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810292738.8A CN108428437B (en) | 2018-04-03 | 2018-04-03 | Public voltage driving circuit, control method thereof and display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108428437A CN108428437A (en) | 2018-08-21 |
| CN108428437B true CN108428437B (en) | 2021-02-19 |
Family
ID=63160313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810292738.8A Active CN108428437B (en) | 2018-04-03 | 2018-04-03 | Public voltage driving circuit, control method thereof and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108428437B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110675796B (en) * | 2019-09-25 | 2022-08-02 | 昆山龙腾光电股份有限公司 | Wide-narrow viewing angle switching circuit, display device and viewing angle control method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101727858A (en) * | 2008-10-10 | 2010-06-09 | 北京京东方光电科技有限公司 | Method and device for eliminating residual image |
| CN103578434A (en) * | 2012-07-25 | 2014-02-12 | 群康科技(深圳)有限公司 | Display device and common voltage circuit module thereof |
| CN104932167A (en) * | 2015-06-25 | 2015-09-23 | 深圳市华星光电技术有限公司 | Blue-phase LCD device and driving method thereof |
| CN106531113A (en) * | 2017-01-03 | 2017-03-22 | 京东方科技集团股份有限公司 | Display panel driving circuit and driving method thereof, and display device |
| CN107466376A (en) * | 2016-12-01 | 2017-12-12 | 昆山龙腾光电有限公司 | The changeable liquid crystal display device in visual angle and view angle switch method |
| CN107820581A (en) * | 2016-09-13 | 2018-03-20 | 昆山龙腾光电有限公司 | The changeable liquid crystal display device in visual angle and view angle switch method |
-
2018
- 2018-04-03 CN CN201810292738.8A patent/CN108428437B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101727858A (en) * | 2008-10-10 | 2010-06-09 | 北京京东方光电科技有限公司 | Method and device for eliminating residual image |
| CN103578434A (en) * | 2012-07-25 | 2014-02-12 | 群康科技(深圳)有限公司 | Display device and common voltage circuit module thereof |
| CN104932167A (en) * | 2015-06-25 | 2015-09-23 | 深圳市华星光电技术有限公司 | Blue-phase LCD device and driving method thereof |
| CN107820581A (en) * | 2016-09-13 | 2018-03-20 | 昆山龙腾光电有限公司 | The changeable liquid crystal display device in visual angle and view angle switch method |
| CN107466376A (en) * | 2016-12-01 | 2017-12-12 | 昆山龙腾光电有限公司 | The changeable liquid crystal display device in visual angle and view angle switch method |
| CN106531113A (en) * | 2017-01-03 | 2017-03-22 | 京东方科技集团股份有限公司 | Display panel driving circuit and driving method thereof, and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108428437A (en) | 2018-08-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108257570B (en) | Control circuit for eliminating shutdown ghost, control method thereof and liquid crystal display device | |
| US8624939B2 (en) | Liquid crystal display device and driving method thereof | |
| US7978170B2 (en) | Driving apparatus of backlight and method of driving backlight using the same | |
| CN101312026B (en) | Liquid crystal display device and its drive method | |
| CN107342063B (en) | Common voltage driving circuit and display device | |
| CN108550350B (en) | Overcurrent protection system and overcurrent protection method of liquid crystal display panel | |
| CN110428785B (en) | TFT panel control circuit | |
| CN111243537B (en) | Common voltage generating circuit, method and display device | |
| TW200823845A (en) | Liquid crystal display and gate modulation method thereof | |
| US9653032B2 (en) | Liquid crystal pixel circuit of liquid crystal display panel and driving method thereof | |
| CN107578754B (en) | Overcurrent protection system and overcurrent protection method of liquid crystal display panel | |
| US8106871B2 (en) | Liquid crystal display and driving method thereof | |
| TW514860B (en) | Automatic flicker improving method of display | |
| CN105513527A (en) | Common voltage compensation circuit, compensation method and display panel | |
| US20200387282A1 (en) | Touch electrode driving circuit, touch electrode driver and touch display device | |
| CN211427809U (en) | Backlight driving circuit and liquid crystal display device | |
| US8169392B2 (en) | Liquid crystal display with low flicker and driving method thereof | |
| CN108428437B (en) | Public voltage driving circuit, control method thereof and display device | |
| CN217086112U (en) | Residual image eliminating circuit and liquid crystal display device | |
| CN109584825B (en) | Display driving assembly and display device | |
| CN214587964U (en) | Liquid crystal display device with a light guide plate | |
| CN105047117A (en) | Method for adjusting common voltage of liquid crystal display panel | |
| CN108877705B (en) | Common voltage generating circuit, source electrode driving circuit and liquid crystal display device | |
| WO2020113677A1 (en) | Display panel driving device | |
| CN109389924B (en) | Driving circuit for display panel, driving method thereof and display panel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 215301, 1, Longteng Road, Kunshan, Jiangsu, Suzhou Applicant after: InfoVision Optoelectronics(Kunshan)Co.,Ltd. Address before: 215301, 1, Longteng Road, Kunshan, Jiangsu, Suzhou Applicant before: INFOVISION OPTOELECTRONICS (KUNSHAN) Co.,Ltd. |
|
| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |