CN109448647B - Visual angle switching architecture, method and liquid crystal display device - Google Patents
Visual angle switching architecture, method and liquid crystal display device Download PDFInfo
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- CN109448647B CN109448647B CN201811464915.2A CN201811464915A CN109448647B CN 109448647 B CN109448647 B CN 109448647B CN 201811464915 A CN201811464915 A CN 201811464915A CN 109448647 B CN109448647 B CN 109448647B
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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
- G09G3/34—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
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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
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0673—Adjustment of display parameters for control of gamma adjustment, e.g. selecting another gamma curve
Abstract
The invention provides a visual angle switching framework, a method and a liquid crystal display device. According to the mode control signal, the time sequence control module outputs a voltage calling instruction, a first polarity control signal and a second polarity control signal, and the first processing module outputs a first voltage generation instruction and a reset signal. The second processing module executes the first voltage generation instruction to output a plurality of external supply voltages, and alternately outputs a second group of gamma voltages and a third group of gamma voltages to the source driving module according to a second polarity control signal period. The source driving module receives a voltage calling instruction, uses an internal gamma correction circuit and receives a plurality of external supply voltages to obtain a first group of gamma voltages. The invention can support three groups of gamma voltages and support the switching use of two groups of gamma voltages in a display mode, thereby effectively improving the image quality of the display picture of the liquid crystal display device.
Description
Technical Field
The present invention relates to the field of liquid crystal display, and in particular, to a viewing angle switching architecture and method, and a liquid crystal display device.
Background
Liquid Crystal Display (LCD) devices have the advantages of good picture quality, small size, light weight, low driving voltage, low power consumption, no radiation, relatively low manufacturing cost, and the like, and currently dominate the flat panel Display field.
At present, the demand for the picture quality of the lcd devices is increasing, and the lcd devices often need to operate in different display modes (e.g. wide viewing angle display mode, narrow viewing angle display mode), and different sets of gamma voltages are needed in different display modes, and sometimes two sets of gamma voltages are needed to be switched in one display mode. Fig. 1 shows two gamma curves corresponding to two sets of gamma voltages required in the narrow viewing angle display mode, and as shown in fig. 1, the merged gamma curve of the two sets of gamma curves is close to the 2.2 ideal gamma curve, which can satisfy the image display requirement in the narrow viewing angle display mode, thereby effectively improving the image quality of the display image of the liquid crystal display device.
However, the conventional viewing angle switching architecture only supports two sets of gamma voltages, i.e., the first display mode only supports the first set of gamma voltages, and the second display mode only supports the second set of gamma voltages, and cannot support the switching of the two sets of gamma voltages in one display mode.
Disclosure of Invention
Accordingly, the present invention is directed to a viewing angle switching architecture, which can solve the problem of switching between two gamma voltages when the conventional circuit design architecture does not support a display mode.
Specifically, the invention provides a view switching architecture, which comprises a time sequence control module, a first processing module, a second processing module and a source driving module. The time sequence control module outputs a voltage calling instruction and a first polarity control signal according to the first display mode control signal and outputs a second polarity control signal according to the second display mode control signal; the first processing module outputs a first voltage generation instruction according to the first display mode control signal and outputs a reset signal according to the second display mode control signal; the second processing module receives the first polarity control signal and the first voltage generation instruction, executes the first voltage generation instruction to output a plurality of external supply voltages, resets according to the reset signal, and alternately outputs a second group of gamma voltages and a third group of gamma voltages according to the second polarity control signal period; the source electrode driving module receives the voltage calling instruction, uses a gamma correction circuit in the source electrode driving module and then receives the external supply voltages to obtain a first group of gamma voltages; the source driving module drives output pixel signals according to the first group of gamma voltages, the second group of gamma voltages or the third group of gamma voltages.
Preferably, the plurality of external supply voltages are a plurality of first gamma voltages.
Preferably, the first processing module stores a second voltage generation instruction and a third voltage generation instruction, and the second voltage generation instruction and the third voltage generation instruction are alternately executed according to the second polarity control signal to alternately output the second group of gamma voltages and the third group of gamma voltages.
Preferably, the first polarity control signal is a fixed voltage signal; the second polarity control signal is a frame-inversion signal.
The invention also provides a visual angle switching method, which comprises the following steps: determining whether the first display mode control signal or the second display mode control signal; outputting a voltage calling instruction and a first polarity control signal according to the first display mode control signal; outputting a first voltage generation instruction according to the first display mode control signal; receiving the first polarity control signal and the first voltage generation instruction, executing the first voltage generation instruction and outputting a plurality of external supply voltages; receiving the voltage calling instruction, using an internal gamma correction circuit, and receiving the plurality of external supply voltages to obtain a first group of gamma voltages; outputting a second polarity control signal according to the second display mode control signal; outputting a reset signal according to the second display mode control signal; resetting according to the reset signal, and alternately outputting a second group of gamma voltages and a third group of gamma voltages according to the second polarity control signal period; driving an output pixel signal according to the first, second, or third set of gamma voltages.
Preferably, the plurality of external supply voltages are a plurality of first gamma voltages.
Preferably, the step of resetting according to the reset signal and alternately outputting the second and third sets of gamma voltages according to the second polarity control signal period includes: alternately executing the second voltage generation instruction and the third voltage generation instruction according to the second polarity control signal to alternately output the second group of gamma voltages and the third group of gamma voltages.
Preferably, the first polarity control signal is a fixed voltage signal.
Preferably, the second polarity control signal is a frame-by-frame inversion signal.
The invention also provides a liquid crystal display device which comprises the visual angle switching framework.
The visual angle switching framework, the method and the liquid crystal display device can support three groups of gamma voltages and support the switching use of two groups of gamma voltages in a display mode, thereby effectively improving the image quality of the display picture of the liquid crystal display device.
In order to make the aforementioned and other objects, features and advantages of the invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
FIG. 1 is a diagram illustrating two sets of gamma curves required in a conventional narrow viewing angle display mode;
FIG. 2 is a circuit diagram of a view switching architecture of the first embodiment;
FIG. 3 is a waveform diagram illustrating the operation of the view angle switching architecture of the first embodiment;
fig. 4 is a flowchart of the operation of the view switching architecture of the second embodiment;
fig. 5 is a flowchart of the operation of the view switching architecture of the third embodiment.
Detailed Description
To further illustrate the technical means and effects of the present invention for achieving the intended purpose, the following detailed description is given for the embodiments, methods, steps, structures, features and effects of the viewing angle switching architecture, method and liquid crystal display device according to the present invention with reference to the accompanying drawings and preferred embodiments.
The foregoing and other aspects, features and advantages of the invention will be apparent from the following more particular description of preferred embodiments, as illustrated in the accompanying drawings. While the invention has been described in connection with specific embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention.
First embodiment
Referring to fig. 2, fig. 2 is a circuit diagram of a viewing angle switching architecture according to a first embodiment. As shown in fig. 2, the view angle switching architecture of the present embodiment includes a timing control module 100, a first processing module 200, a second processing module 300, and a source driving module 400. The timing control module 100 outputs a voltage call command and a first polarity control signal LC1 according to the first display mode control signal ck1, and outputs a second polarity control signal LC2 according to the second display mode control signal ck 2. The first processing module 200 outputs a first voltage generation command according to the first display mode control signal ck1 and outputs a reset signal according to the second display mode control signal ck 2. The second processing module 300 receives the first polarity control signal LC1 and the first voltage generation command, executes the first voltage generation command to output a plurality of external supply voltages, resets according to the reset signal, and alternately outputs the second Gamma voltage Gamma2 and the third Gamma voltage Gamma3 to the source driving module 400 according to the second polarity control signal LC2 period. The source driving module 400 receives a voltage calling instruction, and receives a plurality of external supply voltages by using a Gamma correction circuit inside the source driving module 400 to obtain a first group of Gamma voltages Gamma 1; the source driving module 400 drives the output pixel signal according to the first, second or third Gamma voltages Gamma1, Gamma2 or Gamma 3.
In one embodiment, the plurality of external supply voltages are a plurality of first gamma voltages.
In one embodiment, the first processing module 200 stores the second voltage generation command and the third voltage generation command, and alternately executes the second voltage generation command and the third voltage generation command according to the second polarity control signal LC2 to alternately output the second group Gamma voltage Gamma2 and the third group Gamma voltage Gamma 3.
In one embodiment, the first polarity control signal LC1 may be a fixed voltage signal.
In one embodiment, the second polarity control signal LC2 may be a frame-by-frame inversion signal.
In an embodiment, the first processing module 200 may be an MCU chip.
In one embodiment, the second processing module 300 may be a Gamma voltage chip (P-Gamma IC).
In one embodiment, the first voltage generation command may be, but is not limited to being, transmitted via the I2C bus. The I2C bus is a serial communication bus provided by PHILIPS, and has the advantages of few wiring, simple control mode, high communication speed and the like. The data line SDA and the clock line SCL are adopted to form a communication line, all devices can be connected to a bus in parallel to achieve data receiving and sending, the devices are independent of each other, and the devices are distinguished through unique bus addresses.
In one embodiment, the voltage call command may be, but is not limited to, the P2P signal.
Specifically, the view angle switching architecture of the present embodiment can select different display modes according to the received first display mode control signal ck1 or the second display mode control signal ck2, for example, the first display mode control signal ck1 is used for selecting the first display mode and the second display mode control signal ck2 is used for selecting the second display mode. Wherein the first display mode may be a wide viewing angle display mode, and the second display mode may be a narrow viewing angle display mode. The first display mode control signal ck1 or the second display mode control signal ck2 in this embodiment can be, but is not limited to, a high level signal or a low level signal, and the description will be given by taking the first display mode control signal ck1 as a low level signal and the second display mode control signal ck2 as a high level signal.
In a first display mode (e.g., a wide viewing angle display mode), the mode control signal received by the viewing angle switching architecture is changed from the second display mode control signal ck2 to the first display mode control signal ck1, for example, the mode control signal can be changed from a high level signal to a low level signal. The first display mode control signal ck1 is sent to the timing control module 100 and the first processing module 200, respectively. The timing control module 100 outputs a voltage calling command to the source driving module 400 and outputs a first polarity control signal LC1 to the second processing module 300 according to the first display mode control signal ck 1. The first polarity control signal LC1 may be, for example, a fixed voltage signal. The first processing module 200 outputs a first voltage generation command to the second processing module 300 according to the first display mode control signal ck 1. The second process module 300 may receive the first polarity control signal LC1 and the first voltage generation command and output a plurality of external supply voltages (e.g., V1 to V12 in fig. 2) by executing the first voltage generation command. In addition, the present embodiment does not limit the number of external supply voltages.
Accordingly, the source driving module 400 may receive the voltage calling command and generate a plurality of first Gamma voltages using the internal Gamma correction circuit, and may further receive a plurality of external supply voltages, and the source driving module 400 may call the plurality of first Gamma voltages and/or the plurality of external supply voltages generated by the Gamma correction circuit according to the voltage calling command to obtain the first set of Gamma voltages Gamma 1. In an embodiment, the plurality of external supply voltages may be a plurality of first Gamma voltages, and the source driving module 400 makes all the first Gamma voltages in the first set of Gamma voltages Gamma1 be a part or all of the plurality of external supply voltages provided by the second processing module 300 according to the voltage calling instruction. Finally, the source driving module 400 can drive and output the corresponding pixel signals according to the first set of Gamma voltages Gamma1 to satisfy the image display requirement of the first display mode.
In a second display mode (e.g., a narrow viewing angle display mode), the mode control signal received by the viewing angle switching architecture transitions from the first display mode control signal ck1 to the second display mode control signal ck2, which may transition from a low level signal to a high level signal, for example. The second display mode control signal ck2 is sent to the timing control module 100 and the first processing module 200, respectively. The timing control module 100 outputs the second polarity control signal LC2 to the second processing module 300 according to the second display mode control signal ck 2. The second polarity control signal LC2 may be, for example, a frame-by-frame inversion signal, or a composite signal of two different signals that are alternately output. The first processing module 200 outputs the reset signal to the second processing module 300 according to the second display mode control signal ck 2. The second processing module 300 may output a reset signal according to the second display mode control signal ck2, and may alternately output the second and third sets of Gamma voltages Gamma2 and Gamma3 to the source driving module 400 according to the period of the second polarity control signal LC2, for example, when the second polarity control signal LC2 is a frame-by-frame inversion signal, i.e., the polarity is switched once per frame, the second processing module 300 may output the second set of Gamma voltages Gamma2 according to a signal (e.g., a positive polarity fixed voltage signal) of the second polarity control signal LC2 during a first frame of two adjacent frames, and output the third set of Gamma voltages Gamma3 according to an inversion signal (e.g., a negative polarity fixed voltage signal) of the second frame of two adjacent frames.
Finally, the source driving module 400 can drive and output corresponding pixel signals according to the second and third sets of Gamma voltages Gamma2 and Gamma3 alternately output by the second processing module 300 in a periodic manner, so as to meet the image display requirements of the second display mode, thereby effectively improving the image quality of the displayed image of the liquid crystal display device.
When the first display mode and the second display mode are switched with each other (for example, the first display mode is switched to the second display mode or the second display mode is switched to the first display mode), the amplitude of the common voltage of the source driving module 400 is changed accordingly, so that the display contrast is changed in a corresponding time period, and weakening of the backlight in the time period can compensate and prevent slight flicker possibly caused by transient sudden change of the contrast, so that the display effect is kept uniform, and meanwhile, as the average driving strength of the backlight is reduced, a part of the overall output power consumption can be saved.
Fig. 3 is an operation waveform diagram of the view angle switching architecture of the first embodiment. As shown in fig. 3, in the first display mode, the first display mode control signal ck1 may be, but is not limited to, a low level signal, the first polarity control signal LC1 may be a frame-by-frame inversion signal (in another embodiment, a fixed voltage signal), the Source driving module (Source)400 always receives the first Gamma voltage Gamma1, and the polarity of the first Gamma voltage Gamma1 is inverted once per frame along with the frame synchronization signal STV. Moreover, the liquid crystal backlight control signal BL _ EN is always at a high level, and the backlight is always turned on and remains unchanged. In the second display mode, the second display mode control signal ck2 may be, but is not limited to, a high level signal, the second polarity control signal LC2 may be, but is not limited to, a frame-by-inversion signal, and switches polarity once per frame following the frame synchronization signal STV, the Source driving module (Source)400 alternately receives the second and third sets of Gamma voltages Gamma2 and Gamma3 per frame, and the polarities of the second and third sets of Gamma voltages Gamma2 and Gamma3 are inverted once per frame following the frame synchronization signal STV. When the first display mode and the second display mode are switched to each other, the liquid crystal backlight control signal BL EN is changed to a low level at the start of the first frame synchronization signal STV and is changed to a high level at the start of the second frame synchronization signal STV, and the backlight is turned off during the corresponding first frame synchronization signal STV and second frame synchronization signal STV, and the backlight luminance is recovered from the second frame synchronization signal STV.
In the view angle switching architecture of the present embodiment, in the first display mode, the source driving module 400 receives the voltage call command, and uses the internal Gamma correction circuit, and then receives the external supply voltage output by the second processing module 300 to obtain the first Gamma voltage Gamma1, and in the second display mode, the source driving module 400 receives the second Gamma voltage Gamma2 and the third Gamma voltage Gamma3 alternately output by the second processing module 300 periodically, so that the view angle switching architecture can support the three Gamma voltages and support the switching of the two Gamma voltages in the first display mode, thereby effectively improving the image quality of the displayed image of the liquid crystal display device.
Second embodiment
Referring to fig. 4, fig. 4 is a flowchart illustrating a view switching architecture according to a second embodiment. The present embodiment provides a switching method of a view switching architecture, including the following steps:
s11, the time sequence control module judges whether the mode control signal is the first display mode control signal or the second display mode control signal;
s12, the time sequence control module outputs a voltage calling instruction and a first polarity control signal according to the first display mode control signal;
s13, the first processing module outputs a first voltage generation instruction according to the first display mode control signal;
s14, the second processing module receives the first polarity control signal and the first voltage generation instruction, executes the first voltage generation instruction and outputs a plurality of external supply voltages;
s15, the source driving module receives the voltage calling command, and uses the internal gamma correction circuit, and then receives a plurality of external supply voltages to get a first group of gamma voltages;
s16, the time sequence control module outputs a second polarity control signal according to the second display mode control signal;
s17, the first processing module outputs a reset signal according to the second display mode control signal;
s18, the second processing module resets according to the reset signal and alternately outputs a second group of gamma voltages and a third group of gamma voltages according to the second polarity control signal period;
s19, the source driving module drives the output pixel signal according to the first, second or third set of gamma voltages.
For the specific implementation of this embodiment, reference may be made to the first embodiment, which is not described herein again.
The method for switching the viewing angle of the embodiment can support three groups of gamma voltages and support the switching of the two groups of gamma voltages in a display mode, thereby effectively improving the image quality of the display picture of the liquid crystal display device.
Third embodiment
Referring to fig. 5, fig. 5 is a flowchart illustrating a view switching architecture according to a third embodiment. The method for switching the viewing angle provided by the present embodiment is substantially the same as the second embodiment, except that: the first polarity control signal is a fixed voltage signal; the plurality of external supply voltages are a plurality of first gamma voltages; the second polarity control signal is a frame-inversion signal;
wherein, the step of resetting according to the reset signal and alternately outputting the second and third gamma voltages according to the second polarity control signal period comprises: the first processing module stores a second voltage generation instruction and a third voltage generation instruction, and alternately executes the second voltage generation instruction and the third voltage generation instruction according to a second polarity control signal to alternately output a second group of gamma voltages and a third group of gamma voltages.
Specifically, the present embodiment provides a switching method of a view switching architecture, as shown in fig. 5, including the following steps:
s21, the time sequence control module judges whether the mode control signal is the first display mode control signal or the second display mode control signal;
s22, the time sequence control module outputs a voltage calling instruction and a first polarity control signal according to the first display mode control signal, wherein the first polarity control signal is a fixed voltage signal;
s23, the first processing module outputs a first voltage generation instruction according to the first display mode control signal;
s24, the second processing module receives the first polarity control signal and the first voltage generation instruction, executes the first voltage generation instruction and outputs a plurality of external supply voltages, the plurality of external supply voltages being a plurality of first gamma voltages;
s25, the source driving module receives a voltage calling instruction, uses an internal gamma correction circuit and receives a plurality of external supply voltages to obtain a first group of gamma voltages;
wherein all of the first gamma voltages of the first group of gamma voltages may be a part or all of the plurality of external supply voltages;
s26, the timing control module outputs a second polarity control signal according to the second display mode control signal, the second polarity control signal being a frame-by-frame inversion signal;
s27, the first processing module outputs a reset signal according to the second display mode control signal;
s28, the second processing module resets according to the reset signal and alternately executes a second voltage generation instruction and a third voltage generation instruction according to the second polarity control signal period to alternately output a second group of gamma voltages and a third group of gamma voltages;
s29, the source driving module drives the output pixel signal according to the first, second or third set of gamma voltages.
For the specific implementation of this embodiment, reference may be made to the first embodiment, which is not described herein again.
The method for switching the viewing angle of the embodiment can support three groups of gamma voltages and support the switching of the two groups of gamma voltages in a display mode, thereby effectively improving the image quality of the display picture of the liquid crystal display device.
Fourth embodiment
The invention also provides a liquid crystal display device which comprises the visual angle switching framework.
In one embodiment, the first display mode is a wide viewing angle display mode, and the second display mode is a narrow viewing angle display mode.
In one embodiment, the first display mode control signal is a low level signal, and the second display mode control signal is a high level signal.
The liquid crystal display device of the embodiment can support three groups of gamma voltages and support the switching use of two groups of gamma voltages in a display mode, thereby effectively improving the image quality of the display picture of the liquid crystal display device.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A view switching architecture, comprising:
the timing control module (100), the timing control module (100) outputs a voltage calling instruction and a first polarity control signal according to a first display mode control signal, and outputs a second polarity control signal according to a second display mode control signal;
a first processing module (200), wherein the first processing module (200) outputs a first voltage generation instruction according to the first display mode control signal and outputs a reset signal according to the second display mode control signal;
a second processing module (300), wherein the second processing module (300) receives the first polarity control signal and the first voltage generation instruction, executes the first voltage generation instruction to output a plurality of external supply voltages, resets according to the reset signal, and alternately outputs a second group of gamma voltages and a third group of gamma voltages according to the second polarity control signal period;
the source electrode driving module (400), the source electrode driving module (400) receives the voltage calling instruction, and uses a gamma correction circuit in the source electrode driving module (400) to receive the external supply voltages to obtain a first group of gamma voltages; the source driving module (400) drives output pixel signals according to the first set of gamma voltages, the second set of gamma voltages, or the third set of gamma voltages.
2. The view switching architecture of claim 1, wherein the plurality of external supply voltages are a plurality of first gamma voltages.
3. The view switching architecture of claim 1, wherein the first processing module (200) stores a second voltage generation instruction and a third voltage generation instruction, the second voltage generation instruction and the third voltage generation instruction being executed alternately according to the second polarity control signal to alternately output the second set of gamma voltages and the third set of gamma voltages.
4. The view switching architecture of claim 1, wherein the first polarity control signal is a fixed voltage signal; the second polarity control signal is a frame-inversion signal.
5. A method for switching a viewing angle, comprising:
determining whether the first display mode control signal or the second display mode control signal;
outputting a voltage calling instruction and a first polarity control signal according to the first display mode control signal;
outputting a first voltage generation instruction according to the first display mode control signal;
receiving the first polarity control signal and the first voltage generation instruction, executing the first voltage generation instruction and outputting a plurality of external supply voltages;
receiving the voltage calling instruction, using an internal gamma correction circuit, and receiving the plurality of external supply voltages to obtain a first group of gamma voltages;
outputting a second polarity control signal according to the second display mode control signal;
outputting a reset signal according to the second display mode control signal;
resetting according to the reset signal, and alternately outputting a second group of gamma voltages and a third group of gamma voltages according to the second polarity control signal period;
driving an output pixel signal according to the first, second, or third set of gamma voltages.
6. The viewing angle switching method of claim 5, wherein the plurality of external supply voltages are a plurality of first gamma voltages.
7. The method of claim 5, wherein the step of resetting according to the reset signal and alternately outputting the second and third sets of gamma voltages according to the second polarity control signal period comprises:
alternately executing a second voltage generation instruction and a third voltage generation instruction according to the second polarity control signal to alternately output the second group gamma voltages and the third group gamma voltages.
8. The method of claim 5, wherein the first polarity control signal is a fixed voltage signal.
9. The method of claim 5, wherein the second polarity control signal is a frame-by-frame inversion signal.
10. A liquid crystal display device, comprising the viewing angle switching architecture of any one of claims 1 to 4.
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