CN107393495A - Liquid crystal display apparatus driving circuit - Google Patents

Liquid crystal display apparatus driving circuit Download PDF

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Publication number
CN107393495A
CN107393495A CN201710744218.1A CN201710744218A CN107393495A CN 107393495 A CN107393495 A CN 107393495A CN 201710744218 A CN201710744218 A CN 201710744218A CN 107393495 A CN107393495 A CN 107393495A
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CN
China
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gk
pixel
voltage
sub
liquid crystal
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CN201710744218.1A
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Chinese (zh)
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何怀亮
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惠科股份有限公司
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Priority to CN201710744218.1A priority Critical patent/CN107393495A/en
Publication of CN107393495A publication Critical patent/CN107393495A/en

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    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control 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
    • G09G3/34Control 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
    • G09G3/36Control 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
    • G09G3/3607Control 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 for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels

Abstract

The application provides a kind of liquid crystal display apparatus driving circuit, and liquid crystal display device includes liquid crystal layer, divides into multiple pixels and each pixel includes the first sub-pixel and the second sub-pixel, liquid crystal display apparatus driving circuit, including;Each pixel of multiple pixels is when showing tonal gradation gk, apply voltage V1 (gk) in the first sub-pixel and apply voltage V2 (gk) in the second sub-pixel, if Δ V12 (gk)=V1 (gk) V2 (gk), wherein, 0≤gk≤n, gk and n is more than 0 integer, and n represents brightness highest tonal gradation;When showing that tonal gradation gk is less than predetermined tonal gradation gs, apply voltage V1 (gk) and voltage V2 (gk) and cause 0 volt of Δ V12 (gk) >, and meet Δ V12 (gk)>Δ V12 (gk+1) relation, when showing that tonal gradation gk is equal to or more than predetermined tonal gradation gs, if V2 (gk) is constant so that Δ V12 (gk)>0 volt, and meet Δ V12 (gk)<Δ V12 (gk+1) relation.

Description

Liquid crystal display apparatus driving circuit

Technical field

The present invention relates to liquid crystal display apparatus driving circuit, more particularly to a kind of liquid crystal display device different visual angles that improve The technology of γ characteristics.

Background technology

Liquid crystal display device is that the plane for the advantage such as having high-resolution, thin form, in light weight and consumption electric power is low shows Showing device, in recent years, along with the raising of display performance, the raising of production capacity and price competition to other display devices The raising of power, market scale expand rapidly.

The liquid crystal display device of prior art in general twisted nematic mode (TN modes) can make have positive dielectric constant The major axis of anisotropic liquid crystal molecule is orientated for substrate surface less parallel, moreover, carrying out orientation process, makes liquid crystal molecule Thickness direction of the major axis along liquid crystal layer reversed for approximate 90 degree between upper and lower base plate.If applying voltage on liquid crystal layer, liquid crystal Recover to molecule parallel electric field, release twisted-oriented (twist alignment).The liquid crystal display device of TN modes is by using with liquid Brilliant molecule controls light transmission capacity according to the change of the optical activity of the change in orientation of voltage.

The wide productivity ratio of production surplus of the liquid crystal display device of TN modes is very outstanding.On the one hand, there is display performance special The problem of being not viewing angle characteristic.Specifically, the display surface of the liquid crystal display device of TN modes is from tilted direction, display The significant reduction of contrast, the figure of multiple tonal gradations from black to white can be substantially observed in front observation from tilted direction As if, there is the luminance difference between tonal gradation to become significant unconspicuous problem.In addition, the scale grade characteristic reversion of display, Also the phenomenon (so-called tonal gradation reversal development) brighter from tilted direction of darker part from front occurs.

In recent years, the liquid crystal display device as the liquid crystal display device viewing angle characteristic for improving these TN modes, is developed Coplanar switching mode (IPS modes), Multi-domain Vertical alignment (MVA modes), axial symmetry aligned (ASM modes) etc..This All solves the above-mentioned particular problem on viewing angle characteristic in the liquid crystal display device of a little wide viewing angle modes.That is, do not produce The occasion of display surface displays contrast the problems such as significant reduction, display tonal gradation reversion from tilted direction.

Here, so-called γ characteristics are to represent the tonal gradation dependence of brightness, γ characteristics in positive direction and tilted direction not Together, because tonal gradation dispaly state according to the observation direction and it is different, representing the occasion of the image such as photo, or aobvious Show the occasion televised etc., problem especially occurs.The problem of view angle dependency of γ characteristics, is in MVA modes and ASM modes It is lower more significant than IPS mode.On the one hand, IPS modes are compared with MVA modes or ASM modes, it is difficult to high productivity ratio production just Contrast high panel when face is observed.From this point, it is especially desired to improve MVA modes and/or the liquid crystal display of ASM modes fills The view angle dependency of γ characteristics in putting.

The content of the invention

In view of above mentioned problem of the prior art, the invention provides a kind of liquid crystal display apparatus driving circuit, improves existing There are the γ characteristics of liquid crystal display device different visual angles.

Based on above-mentioned technical problems to be solved, the embodiments of the invention provide a kind of liquid crystal display device, including liquid crystal Layer, is divided into multiple pixels and is shown in a manner of normally-black, and multiple pixels have applies alive multiple electricity on liquid crystal layer Pole, each pixel of multiple pixels include the first sub-pixel and the second sub-pixel, applied on the liquid crystal layer of each pixel other Voltage;Each pixel of multiple pixels when showing tonal gradation gk, be applied to the first sub-pixel and the second sub-pixel it is each as Voltage on the liquid crystal layer of element is V1 (gk) and V2 (gk), if Δ V12 (gk)=V1 (gk) V2 (gk), wherein, 0≤ Gk≤n, gk and n are more than 0 integers, and n represents brightness highest tonal gradation, then are less than in display tonal gradation gk predetermined During tonal gradation gs, if 0 volt of Δ V12 (gk) >, and meet Δ V12 (gk)>Δ V12 (gk+1) relation, in display gray scale When grade gk is equal to or more than predetermined tonal gradation gs, if Δ V12 (gk)>0 volt, and meet Δ V12 (gk)< ΔV12(gk + 1) relation.

Alternatively, each of multiple pixels also includes the 3rd sub-pixel, the 3rd sub-pixel be different from the first sub-pixel and Second sub-pixel;Each of multiple pixels is applied on the liquid crystal layer of the 3rd sub-pixel when showing tonal gradation gk Voltage is V3 (gk), if Δ V13 (gk)=V1 (gk) V3 (gk), when showing that tonal gradation gk is less than predetermined tonal gradation gs, 0 volt of Δ V13 if (gk) >, and meet Δ V12 (gk)>Δ V13 (gk) relation, it is equal to or more than in display tonal gradation gk During predetermined tonal gradation gs, if Δ V13 (gk)>0 volt, and meet Δ V13 (gk)<Δ V13 (gk+1) relation.

Alternatively, the first sub-pixel includes the first electric crystal, is electrically connected to the first source electrode line, and the second sub-pixel includes second Electric crystal, be electrically connected to the second source electrode line, the first source electrode line and the second source electrode line be arranged in parallel, provide respectively the first sub-pixel and The respective voltage signal of second sub-pixel;First electric crystal and the second electric crystal are electrically connected to gate line, there is provided the first sub-pixel With the second sub-pixel same scan signal.

Alternatively, when voltage is that V1 (gk) is less than predetermined voltage Vs, if 0 volt of Δ V12 (gk) >, and meet ΔV12(gk) >Δ V12 (gk+1) relation, when voltage is that V1 (gk) is equal to or more than predetermined voltage Vs, if Δ V12 (gk) >0 volt, and meet Δ V12 (gk)<Δ V12 (gk+1) relation.

The embodiments of the invention provide a kind of liquid crystal display device, including liquid crystal layer, divides into multiple pixels and with normally-black Mode is shown that multiple pixels have applies alive multiple electrodes on liquid crystal layer, and each pixel of multiple pixels includes First sub-pixel and the second sub-pixel, apply other voltage on the liquid crystal layer of each pixel;Each pixel of multiple pixels exists When showing tonal gradation gk, the voltage on the liquid crystal layer for each pixel for being applied to the first sub-pixel and the second sub-pixel is V1 (gk) With V2 (gk), if Δ V12 (gk)=V1 (gk) V2 (gk), wherein, 0≤gk≤n, gk and n be more than 0 it is whole Number, n represent brightness highest tonal gradation, then when showing that tonal gradation gk is less than predetermined tonal gradation gs, if Δ V12 (gk) 0 volt of >, and meet Δ V12 (gk)=Δ V12 (gk+1) relation, it is equal to or more than predetermined gray scale in display tonal gradation gk During grade gs, if Δ V12 (gk)>0 volt, and meet Δ V12 (gk)<Δ V12 (gk+1) relation.

Alternatively, each of multiple pixels also includes the 3rd sub-pixel, the 3rd sub-pixel be different from the first sub-pixel and Second sub-pixel;Each of multiple pixels is applied on the liquid crystal layer of the 3rd sub-pixel when showing tonal gradation gk Voltage is V3 (gk), if Δ V13 (gk)=V1 (gk) V3 (gk), when showing that tonal gradation gk is less than predetermined tonal gradation gs, 0 volt of Δ V13 if (gk) >, and meet Δ V12 (gk)>Δ V13 (gk) relation, it is equal to or more than in display tonal gradation gk During predetermined tonal gradation gs, if Δ V13 (gk)>0 volt, and meet Δ V13 (gk)<Δ V13 (gk+1) relation.

Alternatively, the first sub-pixel includes the first electric crystal, is electrically connected to the first source electrode line, and the second sub-pixel includes second Electric crystal, be electrically connected to the second source electrode line, the first source electrode line and the second source electrode line be arranged in parallel, provide respectively the first sub-pixel and The respective voltage signal of second sub-pixel;First electric crystal and the second electric crystal are electrically connected to gate line, there is provided the first sub-pixel With the second sub-pixel same scan signal.

Alternatively, when voltage is that V1 (gk) is less than predetermined voltage Vs, if 0 volt of Δ V12 (gk) >, and meet Δ V12 (gk)=Δ V12 (gk+1) relation, when voltage is that V1 (gk) is equal to or more than predetermined voltage Vs, if Δ V12 (gk)> 0 Volt, and meet Δ V12 (gk)<Δ V12 (gk+1) relation.

The embodiments of the invention provide a kind of liquid crystal display apparatus driving circuit, liquid crystal display device includes liquid crystal layer, area It is divided into multiple pixels and each pixel includes the first sub-pixel and the second sub-pixel, multiple pixels have applies electricity on liquid crystal layer The multiple electrodes of pressure;Liquid crystal display apparatus driving circuit, including;Each pixel of multiple pixels when showing tonal gradation gk, Apply voltage V1 (gk) in the first sub-pixel and apply voltage V2 (gk) in the second sub-pixel, if Δ V12 (gk)=V1 (gk) V2 (gk), wherein, 0≤gk≤n, gk and n are more than 0 integers, and n represents brightness highest tonal gradation;In display gray scale When grade gk is less than predetermined tonal gradation gs, applies voltage V1 (gk) and voltage V2 (gk) and cause 0 volt of Δ V12 (gk) >, and it is full Sufficient Δ V12 (gk)>Δ V12 (gk+1) relation;When showing that tonal gradation gk is equal to or more than predetermined tonal gradation gs, if V2 (gk) is constant so that Δ V12 (gk)>0 volt, and meet Δ V12 (gk)<Δ V12 (gk+1) relation.

Alternatively, liquid crystal display apparatus driving circuit also includes applying voltage V3 (gk) different from the first sub-pixel and the On the liquid crystal layer of 3rd sub-pixel of two sub-pixels, if Δ V13 (gk)=V1 (gk) V3 (gk);It is small in display tonal gradation gk When predetermined tonal gradation gs, apply voltage V1 (gk) and voltage V3 (gk) and to set 0 volt of Δ V13 (gk) >, and meet ΔV12(gk) >Δ V13 (gk) relation;When showing that tonal gradation gk is equal to or more than predetermined tonal gradation gs, if V3 (gk) it is constant so that Δ V13 (gk)>0 volt, and meet Δ V13 (gk)<Δ V13 (gk+1) relation.

Alternatively, liquid crystal display apparatus driving circuit also includes the first source electrode line and the second source electrode line provides the first son respectively Pixel and the respective voltage signal of the second sub-pixel;Gate line provides the first sub-pixel and the second sub-pixel same scan signal.

Alternatively, when voltage is that V1 (gk) is less than predetermined voltage Vs, apply voltage V1 (gk) and voltage V2 (gk) and cause 0 volt of Δ V12 (gk) >, and meet Δ V12 (gk)>Δ V12 (gk+1) relation;It is that V1 (gk) is equal to or more than in advance in voltage When determining voltage Vs, if V2 (gk) is constant so that Δ V12 (gk)>0 volt, and meet Δ V12 (gk)<Δ V12 (gk+1) pass System.

The embodiments of the invention provide a kind of liquid crystal display apparatus driving circuit, liquid crystal display device includes liquid crystal layer, area It is divided into multiple pixels and each pixel includes the first sub-pixel and the second sub-pixel, multiple pixels have applies electricity on liquid crystal layer The multiple electrodes of pressure;Liquid crystal display apparatus driving circuit, including;Each pixel of multiple pixels when showing tonal gradation gk, Apply voltage V1 (gk) in the first sub-pixel and apply voltage V2 (gk) in the second sub-pixel, if Δ V12 (gk)=V1 (gk) V2 (gk), wherein, 0≤gk≤n, gk and n are more than 0 integers, and n represents brightness highest tonal gradation;In display gray scale When grade gk is less than predetermined tonal gradation gs, applies voltage V1 (gk) and voltage V2 (gk) and cause 0 volt of Δ V12 (gk) >, and it is full Sufficient Δ V12 (gk)=Δ V12 (gk+1) relation;When showing that tonal gradation gk is equal to or more than predetermined tonal gradation gs, if V2 (gk) is constant so that Δ V12 (gk)>0 volt, and meet Δ V12 (gk)<Δ V12 (gk+1) relation.

Alternatively, liquid crystal display apparatus driving circuit also includes applying voltage V3 (gk) different from first sub-pixel And on the liquid crystal layer of the 3rd sub-pixel of second sub-pixel, if Δ V13 (gk)=V1 (gk) V3 (gk);In display gray scale When grade gk is less than predetermined tonal gradation gs, applies voltage V1 (gk) and voltage V3 (gk) and to set 0 volt of Δ V13 (gk) >, and Meet Δ V12 (gk) > Δs V13 (gk) relation;When showing that tonal gradation gk is equal to or more than predetermined tonal gradation gs, If V3 (gk) is constant so that Δ V13 (gk)>0 volt, and meet Δ V13 (gk)<Δ V13 (gk+1) relation.

Alternatively, liquid crystal display apparatus driving circuit also includes the first source electrode line and the second source electrode line provides the first son respectively Pixel and the respective voltage signal of the second sub-pixel;Gate line provides the first sub-pixel and the second sub-pixel same scan signal.

Alternatively, when voltage is that V1 (gk) is less than predetermined voltage Vs, apply voltage V1 (gk) and voltage V2 (gk) and cause 0 volt of Δ V12 (gk) >, and meet Δ V12 (gk)=Δ V12 (gk+1) relation;It is that V1 (gk) is equal to or more than in advance in voltage When determining voltage Vs, if V2 (gk) is constant so that Δ V12 (gk)>0 volt, and meet Δ V12 (gk)<Δ V12 (gk+1) pass System.

It is respective by applying in sub-pixel the invention provides liquid crystal display device and its driving method based on above-mentioned Voltage and improve γ characteristic of the liquid crystal display device in different visual angles, improve display quality.In addition, the present invention is showing different ashes Different application voltage conditions are provided when spending grade, driving flow can be improved, lift the drive efficiency of liquid crystal display device.

Brief description of the drawings

In order to illustrate more clearly of embodiments of the invention technical scheme, required use in being described below to embodiment Accompanying drawing be briefly described, it should be apparent that, drawings in the following description are some embodiments of the present invention, for this area For those of ordinary skill, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.

Fig. 1 is the schematic diagram of liquid crystal display device in one embodiment of the invention.

Fig. 2 is the schematic diagram of the pixel of liquid crystal display device in one embodiment of the invention.

Fig. 3 a, 3b are the schematic diagram for applying voltage status in one embodiment of the invention.

Fig. 4 is the schematic diagram of another pixel of liquid crystal display device in one embodiment of the invention.

Fig. 5 is the flow chart of liquid crystal display apparatus driving circuit in one embodiment of the invention.

Fig. 6 a, 6b are another schematic diagram for applying voltage status in one embodiment of the invention.

Fig. 7 is the flow chart of liquid crystal another kind display-apparatus driving method in one embodiment of the invention.

Fig. 8 a, 8b are the schematic diagram that another in one embodiment of the invention applies voltage status.

Fig. 9 is the flow chart of another display-apparatus driving method of liquid crystal in one embodiment of the invention.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation describes.Obviously, described embodiment is part of the embodiment of the present invention, rather than whole embodiments.Based on this hair Embodiment in bright, the every other implementation that those of ordinary skill in the art are obtained under the premise of creative work is not made Example, belongs to the scope of protection of the invention.

Fig. 1 is the schematic diagram of liquid crystal display device in one embodiment of the invention, referring to Fig. 1, liquid crystal display device 100 wraps Multiple pixel P with rectangular setting are included, among each pixel P, there is the liquid crystal layer 11 set on the substrate 10, liquid crystal Display device 100 is shown in a manner of normally-black.The electric field that liquid crystal layer 11 is formed by pixel electrode and common electrode 13, changes liquid Brilliant molecule torsional direction, and then change the translucency of liquid crystal display device 100.Wherein, pixel electrode include first electrode 12a and Second electrode 12b, it is arranged between substrate 10 and liquid crystal layer 11, first electrode 12a and shared electrode 13 apply a voltage to pixel P The first sub-pixel P1, and second electrode 12b and shared electrode 13 apply a voltage to pixel P the second sub-pixel P2.Due to One electrode 12a and second electrode 12b can apply different voltages, therefore among each pixel P, can control in different sub- pictures The liquid crystal of element has different steering degree, and therefore, then during for different visual angles, the γ characteristics of liquid crystal display device 100 can obtain To improvement.

Fig. 2 is a kind of schematic diagram of the pixel of liquid crystal display device in one embodiment of the invention, referring to Fig. 2, liquid crystal Show that device can form the pixel P of matrix type, each pixel P area by the gate line be arrangeding in parallel and the source electrode line be arrangeding in parallel Domain can be divided into the first sub-pixel P1 and the second sub-pixel P2.Wherein, it is brilliant to include the electricity of first electrode 12a and first by the first sub-pixel P1 Body T1, first electrode 12a are electrically connected to the first source electrode line SL1, the second sub-pixel P2 by the first electric crystal T1 includes the second electricity Pole 12b and the second electric crystal T2, second electrode 12b are electrically connected to the second source electrode line SL2, the first source electrode by the second electric crystal T2 Line SL1 and the second source electrode line SL2 be arranged in parallel, provide the respective voltage letters of the first sub-pixel P1 and the second sub-pixel P2 respectively Number.In addition, the first electric crystal T1 and the second electric crystal T2 are electrically connected to same gate lines G L, the first sub- picture is provided by gate lines G L Plain P1 and the second sub-pixel P2 same scan signals.Each pixel P need show particular grayscale when, connection gate line and The control chip of source electrode line can send out same scan signal via gate lines G L to pixel P, and respectively by the first source electrode line SL1 and Second source electrode line SL2 sends out respective voltage signal so that first electrode 12a and second electrode 12b can be individually in the liquid of pixel Apply different voltages on crystal layer.

Fig. 3 a, 3b are the schematic diagram for applying voltage status in one embodiment of the invention, refer to Fig. 3 a, and transverse axis is to be applied to The first voltage V1 (gk) of first pixel, the longitudinal axis are the second voltage V2 (gk) for being applied to the second pixel, set voltage Poor Δ V12 (gk)=V1 (gk) V2 (gk), wherein, 0≤gk≤n, gk and n are more than 0 integers, and gk is liquid crystal The tonal gradation that the pixel of display device is shown, n represent brightness highest tonal gradation, such as n can be 256.First voltage V1 (gk) and second voltage V2 (gk) applies state as illustrated, when the tonal gradation gk of display is less than predetermined tonal gradation gs, 0 volt of Δ V12 (gk) > is set, and meets Δ V12 (gk)>Δ V12 (gk+1) relation, that is, tonal gradation gk is in 0 and gs Between in the case of, first voltage V1 (gk) is more than second voltage V2 (gk), while when tonal gradation gk is improved, first voltage V1 (gk) and second voltage V2 (gk) voltage difference delta V12 (gk) is gradually reduced.When display tonal gradation gk is equal to or more than in advance When determining tonal gradation gs, if Δ V12 (gk)=0 volt, and meet Δ V12 (gk)=Δ V12 (gk+1) relation, that is, gray scale In the case that grade gk is between gs and n, control first voltage V1 (gk) is equal to second voltage V2 (gk) so that first voltage V1 (gk) and second voltage V2 (gk) voltage difference delta V12 (gk) be 0, when tonal gradation gk is improved, first voltage V1 (gk) and Second voltage V2 (gk) voltage difference delta V12 (gk) remains unchanged.

Fig. 3 b are referred to, transverse axis is the first voltage V1 (gk) for being applied to the first pixel, and the longitudinal axis is to be applied to the second pixel Second voltage V2 (gk), set voltage difference delta V12 (gk)=V1 (gk) V2 (gk), wherein, 0≤gk≤n, gk It is more than 0 integer with n, gk is the tonal gradation that the pixel of liquid crystal display device is shown, n represents brightness highest gray scale etc. Level, such as n can be 256.First voltage V1 (gk) and second voltage V2 (gk) applies state as illustrated, when gray scale of display etc. When level gk is less than predetermined tonal gradation gs, 0 volt of Δ V12 (gk) > is set, and meet Δ V12 (gk)=Δ V12 (gk+1) pass System, that is, in the case that tonal gradation gk is between 0 and gs, first voltage V1 (gk) are more than second voltage V2 (gk), while When tonal gradation gk is improved, first voltage V1 (gk) and second voltage V2 (gk) voltage difference delta V12 (gk) remain unchanged.When aobvious When showing that tonal gradation gk is equal to or more than predetermined tonal gradation gs, if Δ V12 (gk)=0 volt, and meet Δ V12 (gk)=Δ V12 (gk+1) relation, that is, in the case that tonal gradation gk is between gs and n, control first voltage V1 (gk) is equal to second Voltage V2 (gk) so that first voltage V1 (gk) and second voltage V2 (gk) voltage difference delta V12 (gk) is 0, in tonal gradation When gk is improved, first voltage V1 (gk) and second voltage V2 (gk) voltage difference delta V12 (gk) remain unchanged.

Because the light transmittance of liquid crystal display device can improve with voltage increase is applied, therefore, the reservation of above-mentioned setting Tonal gradation gs, it can be judged using voltage swing is applied corresponding to it.Such as reach corresponding when applying first voltage V1 (gk) During predetermined tonal gradation gs magnitude of voltage Vs (gs), then liquid crystal can be controlled according to the application voltage status shown in Fig. 3 a, 3b Display device.By the above method, the controllable first voltage for being applied to the first sub-pixel and the of the second sub-pixel is applied to Two voltages so that when tonal gradation is low, appropriate voltage difference can be provided, the γ for improving liquid crystal display device in different visual angles is special Property, when the tonal gradation of display reaches predetermined tonal gradation, such as when predetermined tonal gradation gs is more than 128, make the first son The voltage that pixel and the second sub-pixel apply is equal, reduces the control program of switching varying voltage signal, lifting liquid crystal display dress The drive efficiency put.

Fig. 4 is the schematic diagram of another pixel of liquid crystal display device in one embodiment of the invention, referring to Fig. 4, liquid crystal Display can form the pixel P of matrix type by the gate line be arrangeding in parallel and the source electrode line be arrangeding in parallel, each pixel P's Region can be divided into the first sub-pixel P1, the second sub-pixel P2 and the 3rd sub-pixel P3.Wherein, the first sub-pixel P1 includes the first electricity Pole 12a and the first electric crystal T1, first electrode 12a are electrically connected to the first source electrode line SL1, the second sub- picture by the first electric crystal T1 Plain P2 includes second electrode 12b and the second electric crystal T2, second electrode 12b are electrically connected to the second source electrode by the second electric crystal T2 Line SL2, the 3rd sub-pixel P3 include the 3rd electrode 12c and the 3rd electric crystal T3, and the 3rd electrode 12c passes through the 3rd electric crystal T3 electricity It is connected to the second source electrode line SL2, the first source electrode line SL1 and the second source electrode line SL2 to be arranged in parallel, the first source electrode line SL1 provides the One sub-pixel P1 voltage signals, the second source electrode line SL2 provide the second sub-pixel P2 voltage signals.In addition, the first electric crystal T1 and Second electric crystal T2 is electrically connected to first grid polar curve GL1, and the first sub-pixel P1 and the second sub-pixel are provided by first grid polar curve GL1 P2 same scan signals, the 3rd electric crystal T3 are electrically connected to second gate line GL2, and the 3rd sub- picture is provided by second gate line GL2 Plain P3 scanning signals.When each pixel P needs to show particular grayscale, the control chip for connecting gate line and source electrode line can Scanning signal is sent out to pixel P via first grid polar curve GL1 and second gate line GL2, and respectively by the first source electrode line SL1 and the Two source electrode line SL2 send out respective voltage signal so that first electrode 12a, second electrode 12b and the 3rd electrode 12c can be indivedual In applying different voltages on the liquid crystal layer of pixel.

Above-described embodiment is that pixel is divided into three sub-pixels, wherein the voltage for putting on the 3rd sub-pixel P3 can be V3 (gk) voltage difference delta V13 (gk)=V1 (gk) V3 (gk) of the first sub-pixel P1 and the 3rd sub-pixel, is set.Wherein, showing When tonal gradation gk is less than predetermined tonal gradation gs, if 0 volt of Δ V13 (gk) >, and meet Δ V12 (gk)>Δ V13's (gk) Relation, that is, in the case that tonal gradation gk is between 0 and gs, first voltage V1 (gk) is more than tertiary voltage V2 (gk), meanwhile, First voltage V1 (gk) and second voltage V2 (gk) voltage difference delta V12 (gk) is more than the first sub-pixel P1 and the 3rd sub-pixel Voltage difference delta V13 (gk).When showing that tonal gradation gk is equal to or more than predetermined tonal gradation gs, if Δ V13 (gk)=0 volt, And meet Δ V12 (gk)=Δ V13 (gk) relation.That is, in the case that tonal gradation gk is between gs and n, control first Voltage V1 (gk) is equal to tertiary voltage V3 (gk) so that Δ V13 (gk)=0, also therefore when tonal gradation gk is improved, and voltage Poor Δ V12 (gk) and Δ V13 (gk) are equal.Above-mentioned sub-pixel division methods, can be by the second sub-pixel P2 and the 3rd sub-pixel P3 is divided into equal area, but the present invention is not limited, and each pixel can also be divided into the sub-pixel of more than 3, and according to Each sub-pixel occupied area is designed according to division numbers.But, dividing more sub-pixels needs more control circuits to provide Difference applies voltage, and therefore, the display quality presented needed for visible liquid crystal display device provides appropriate sub-pixel division numbers And position.

Fig. 5 is the flow chart of liquid crystal display apparatus driving circuit in one embodiment of the invention, referring to Fig. 5, liquid crystal display Apparatus driving circuit is applied to Fig. 1 and Fig. 2 liquid crystal display device, including liquid crystal layer 11, each pixel P include the first sub-pixel P1 and the second sub-pixel P2, the first sub-pixel P1 and the second sub- picture are provided respectively by the first source electrode line SL1 and the second source electrode line SL2 The plain respective voltage signals of P2, and the first sub-pixel P1 and the second sub-pixel P2 same scan signals are provided by gate lines G L, And then voltage is applied and by second electrode 12b in liquid crystal layer by first pixel P1s of the first electrode 12a on liquid crystal layer 11 The second pixel P2 on 11 applies voltage.Liquid crystal display apparatus driving circuit comprises the steps of (S01-S04):

Step S01:Apply first voltage V1 (gk) in the first sub-pixel and apply second voltage V2 (gk) in the second sub-pixel;

Step S02:Judge that display shows whether tonal gradation gk is less than predetermined tonal gradation gs;It is identical with previous embodiment, step Judge among rapid S02 tonal gradation whether be less than predetermined tonal gradation gs can also tranmittance relatively application first voltage V1 (gk) be The no magnitude of voltage Vs (gs) for reaching corresponding predetermined tonal gradation gs is judged.

If so, then enter step S03:Apply first voltage V1 (gk) and second voltage V2 (gk) and cause Δ V12 (gk) > 0 Volt, and meet Δ V12 (gk)>Δ V12 (gk+1) relation;

If it is not, then enter step S04:If V1 (gk)=V2 (gk) causes Δ V12 (gk)=0 volt, and meets Δ V12 (gk) =Δ V12 (gk+1) relation.

Above-mentioned steps be refering to Fig. 3 a voltage state of a control to perform the step of, if refering to Fig. 3 b voltage control shape State, then step S03 is the relation for meeting Δ V12 (gk)=Δ V12 (gk+1).In addition, if pixel is divided into the son of more than three Pixel, then in step S03 and S04 application voltage control, then the content as disclosed by Fig. 4, adds the 3rd sub-pixel Apply voltage control method.Such as:Step S03 is also right in addition to first voltage V1 (gk) and second voltage V2 (gk) is applied 3rd sub-pixel applies tertiary voltage V3 (gk), and meets 0 volt of Δ V13 (gk) >, and meets Δ V12 (gk)> ΔV13(gk) Relation.Step S04 then causes Δ V13 (gk)=0 volt including setting V1 (gk)=V3 (gk), and meets Δ V12 (gk) =Δ V13 (gk) relation.

Fig. 6 a, 6b are another schematic diagram for applying voltage status in one embodiment of the invention, refer to Fig. 6 a, transverse axis is The first voltage V1 (gk) of the first pixel is applied to, the longitudinal axis is the second voltage V2 (gk) for being applied to the second pixel, sets voltage Poor Δ V12 (gk)=V1 (gk) V2 (gk), wherein, 0≤gk≤n, gk and n are more than 0 integers, and gk is liquid crystal The tonal gradation that the pixel of display device is shown, n represent brightness highest tonal gradation, such as n can be 256.First voltage V1 (gk) and second voltage V2 (gk) applies state as illustrated, when the tonal gradation gk of display is less than predetermined tonal gradation gs, 0 volt of Δ V12 (gk) > is set, and meets Δ V12 (gk)>Δ V12 (gk+1) relation, that is, tonal gradation gk is in 0 and gs Between in the case of, first voltage V1 (gk) is more than second voltage V2 (gk), while when tonal gradation gk is improved, first voltage V1 (gk) and second voltage V2 (gk) voltage difference delta V12 (gk) is gradually reduced.When display tonal gradation gk is equal to or more than in advance When determining tonal gradation gs, if Δ V12 (gk)<0 volt, and meet Δ V12 (gk)≤Δ V12 (gk+1) relation, that is, ash In the case of spending grade gk between gs and n, control first voltage V1 (gk) is less than second voltage V2 (gk) so that first voltage V1 (gk) and second voltage V2 (gk) voltage difference delta V12 (gk) is less than 0, when tonal gradation gk is improved, first voltage V1 (gk) and second voltage V2 (gk) voltage difference delta V12 (gk) gradually increase.

Fig. 6 b are referred to, transverse axis is the first voltage V1 (gk) for being applied to the first pixel, and the longitudinal axis is to be applied to the second pixel Second voltage V2 (gk), set voltage difference delta V12 (gk)=V1 (gk) V2 (gk), wherein, 0≤gk≤n, gk It is more than 0 integer with n, gk is the tonal gradation that the pixel of liquid crystal display device is shown, n represents brightness highest gray scale etc. Level, such as n can be 256.First voltage V1 (gk) and second voltage V2 (gk) applies state as illustrated, when gray scale of display etc. When level gk is less than predetermined tonal gradation gs, 0 volt of Δ V12 (gk) > is set, and meet Δ V12 (gk)=Δ V12 (gk+1) pass System, that is, in the case that tonal gradation gk is between 0 and gs, first voltage V1 (gk) are more than second voltage V2 (gk), while When tonal gradation gk is improved, first voltage V1 (gk) and second voltage V2 (gk) voltage difference delta V12 (gk) remain unchanged.When aobvious When showing that tonal gradation gk is equal to or more than predetermined tonal gradation gs, if Δ V12 (gk)<0 volt, and meet Δ V12 (gk)=Δ V12 (gk+1) relation, that is, in the case that tonal gradation gk is between gs and n, control first voltage V1 (gk) is less than second Voltage V2 (gk) so that first voltage V1 (gk) and second voltage V2 (gk) voltage difference delta V12 (gk) is less than 0, in gray scale etc. When level gk is improved, first voltage V1 (gk) and second voltage V2 (gk) voltage difference delta V12 (gk) remain unchanged.

Because the light transmittance of liquid crystal display device can improve with voltage increase is applied, therefore, the reservation of above-mentioned setting Tonal gradation gs, it can be judged using voltage swing is applied corresponding to it.Such as reach corresponding when applying first voltage V1 (gk) During predetermined tonal gradation gs magnitude of voltage Vs (gs), then liquid crystal can be controlled according to the application voltage status shown in Fig. 6 a, 6b Display device.By the above method, the controllable first voltage for being applied to the first sub-pixel and the of the second sub-pixel is applied to Two voltages so that when tonal gradation is low, appropriate voltage difference can be provided, the γ for improving liquid crystal display device in different visual angles is special Property, when the tonal gradation of display reaches predetermined tonal gradation, such as when predetermined tonal gradation gs is more than 128, make the first son The voltage that the voltage that pixel applies is less than the application of the second sub-pixel is equal, applies alive state by change, lifts liquid crystal The display effect of showing device.

If the pixel of liquid crystal display device such as Fig. 4 is divided into three sub-pixels, except the electricity of first voltage V1 (gk) and second Press V2 (gk) outside, tertiary voltage V3 (gk) also is applied to the 3rd sub-pixel, be less than predetermined tonal gradation in display tonal gradation gk During gs, meet 0 volt of Δ V13 (gk) >, and meet Δ V12 (gk)>Δ V13 (gk) relation.In display tonal gradation gk etc. When the predetermined tonal gradation gs, then Δ V13 (gk) is set<0 volt, and meet Δ V12 (gk)=Δ V13 (gk) Relation.

Fig. 7 is the flow chart of another liquid crystal display apparatus driving circuit in one embodiment of the invention, referring to Fig. 7, liquid Crystal device driving method is applied to Fig. 1 and Fig. 2 liquid crystal display device, including liquid crystal layer 11, and each pixel P includes first Sub-pixel P1 and the second sub-pixel P2, the first sub-pixel P1 and are provided respectively by the first source electrode line SL1 and the second source electrode line SL2 The two respective voltage signals of sub-pixel P2, and provide the first sub-pixel P1 and the second sub-pixel P2 same scans by gate lines G L Signal, and then voltage is applied and by second electrode 12b in liquid by first pixel P1s of the first electrode 12a on liquid crystal layer 11 The second pixel P2 on crystal layer 11 applies voltage.Liquid crystal display apparatus driving circuit comprises the steps of (S11-S14):

Step S11:Apply first voltage V1 (gk) in the first sub-pixel and apply second voltage V2 (gk) in the second sub-pixel;

Step S12:Judge that display shows whether tonal gradation gk is less than predetermined tonal gradation gs;It is identical with previous embodiment, step Judge among rapid S12 tonal gradation whether be less than predetermined tonal gradation gs can also tranmittance relatively application first voltage V1 (gk) be The no magnitude of voltage Vs (gs) for reaching corresponding predetermined tonal gradation gs is judged.

If so, then enter step S13:Apply voltage V1 (gk) and voltage V2 (gk) and cause 0 volt of Δ V12 (gk) >, and it is full Sufficient Δ V12 (gk)>Δ V12 (gk+1) relation;

If it is not, then enter step S14:If V1 (gk)<V2 (gk) causes Δ V12 (gk)<0 volt, and meet Δ V12 (gk)≤Δ V12 (gk+1) relation.

Above-mentioned steps be refering to Fig. 6 a voltage state of a control to perform the step of, if refering to Fig. 6 b voltage control shape State, then step S13 is the relation for meeting Δ V12 (gk)=Δ V12 (gk+1), and step S14 is to meet Δ V12 (gk)=Δ V12 (gk+1) relation.In addition, if pixel is divided into the sub-pixel of more than three, then in step S13 and S14 Apply in voltage control, add the application voltage control method of the 3rd sub-pixel.It is less than predetermined gray scale in display tonal gradation gk During grade gs, apply voltage V1 (gk) and voltage V3 (gk) and to set 0 volt of Δ V13 (gk) >, and meet Δ V12 (gk)>ΔV13 (gk) relation.When showing that tonal gradation gk is equal to or more than the predetermined tonal gradation gs, then V1 (gk) is set<V3 (gk) makes Obtain Δ V13 (gk)<0 volt, and meet Δ V12 (gk)=Δ V13 (gk) relation.

Fig. 8 a, 8b are the schematic diagram that another in one embodiment of the invention applies voltage status, refer to Fig. 8 a, transverse axis is The first voltage V1 (gk) of the first pixel is applied to, the longitudinal axis is the second voltage V2 (gk) for being applied to the second pixel, sets voltage Poor Δ V12 (gk)=V1 (gk) V2 (gk), wherein, 0≤gk≤n, gk and n are more than 0 integers, and gk is liquid crystal The tonal gradation that the pixel of display device is shown, n represent brightness highest tonal gradation, such as n can be 256.First voltage V1 (gk) and second voltage V2 (gk) applies state as illustrated, when the tonal gradation gk of display is less than predetermined tonal gradation gs, 0 volt of Δ V12 (gk) > is set, and meets Δ V12 (gk)>Δ V12 (gk+1) relation, that is, tonal gradation gk is in 0 and gs Between in the case of, first voltage V1 (gk) is more than second voltage V2 (gk), while when tonal gradation gk is improved, first voltage V1 (gk) and second voltage V2 (gk) voltage difference delta V12 (gk) is gradually reduced.When display tonal gradation gk is equal to or more than in advance When determining tonal gradation gs, if Δ V12 (gk)<0 volt, and meet Δ V12 (gk)≤Δ V12 (gk+1) relation, that is, ash In the case of spending grade gk between gs and n, control second voltage V2 (gk) remains unchanged, the electricity of first voltage V1 (gk) and second V2 (gk) voltage difference delta V12 (gk) is pressed to be more than 0, when tonal gradation gk is improved, first voltage V1 (gk) and second voltage V2 (gk) voltage difference delta V12 (gk) is gradually decreased.

Fig. 8 b are referred to, transverse axis is the first voltage V1 (gk) for being applied to the first pixel, and the longitudinal axis is to be applied to the second pixel Second voltage V2 (gk), set voltage difference delta V12 (gk)=V1 (gk) V2 (gk), wherein, 0≤gk≤n, gk It is more than 0 integer with n, gk is the tonal gradation that the pixel of liquid crystal display device is shown, n represents brightness highest gray scale etc. Level, such as n can be 256.First voltage V1 (gk) and second voltage V2 (gk) applies state as illustrated, when gray scale of display etc. When level gk is less than predetermined tonal gradation gs, 0 volt of Δ V12 (gk) > is set, and meet Δ V12 (gk)=Δ V12 (gk+1) pass System, that is, in the case that tonal gradation gk is between 0 and gs, first voltage V1 (gk) are more than second voltage V2 (gk), while When tonal gradation gk is improved, first voltage V1 (gk) and second voltage V2 (gk) voltage difference delta V12 (gk) remain unchanged.When aobvious When showing that tonal gradation gk is equal to or more than predetermined tonal gradation gs, if Δ V12 (gk)>0 volt, and meet Δ V12 (gk)< Δ V12 (gk+1) relation, that is, in the case that tonal gradation gk is between gs and n, control second voltage V2 (gk) remains unchanged, First voltage V1 (gk) and second voltage V2 (gk) voltage difference delta V12 (gk) is more than 0, when tonal gradation gk is improved, first Voltage V1 (gk) and second voltage V2 (gk) voltage difference delta V12 (gk) is gradually decreased.

Because the light transmittance of liquid crystal display device can improve with voltage increase is applied, therefore, the reservation of above-mentioned setting Tonal gradation gs, it can be judged using voltage swing is applied corresponding to it.Such as reach corresponding when applying first voltage V1 (gk) During predetermined tonal gradation gs magnitude of voltage Vs (gs), then liquid crystal can be controlled according to the application voltage status shown in Fig. 8 a, 8b Display device.By the above method, the controllable first voltage for being applied to the first sub-pixel and the of the second sub-pixel is applied to Two voltages so that when tonal gradation is low, appropriate voltage difference can be provided, the γ for improving liquid crystal display device in different visual angles is special Property, when the tonal gradation of display reaches predetermined tonal gradation, such as when predetermined tonal gradation gs is more than 128, make the second son The voltage that pixel applies is constant, only applies voltage by changing the first sub-pixel to adjust the state of display, lifting liquid crystal display dress The convenience put simultaneously maintains excellent display effect.

If the pixel of liquid crystal display device such as Fig. 4 is divided into three sub-pixels, except the electricity of first voltage V1 (gk) and second Press V2 (gk) outside, tertiary voltage V3 (gk) also is applied to the 3rd sub-pixel, be less than predetermined tonal gradation in display tonal gradation gk During gs, meet 0 volt of Δ V13 (gk) >, and meet Δ V12 (gk)>Δ V13 (gk) relation.In display tonal gradation gk etc. When the predetermined tonal gradation gs, then Δ V13 (gk) is set<0 volt, and meet Δ V13 (gk)< ΔV13(gk+ 1) relation.

Fig. 9 is the flow chart of another liquid crystal display apparatus driving circuit in one embodiment of the invention, referring to Fig. 9, liquid Crystal device driving method is applied to Fig. 1 and Fig. 2 liquid crystal display device, including liquid crystal layer 11, and each pixel P includes first Sub-pixel P1 and the second sub-pixel P2, the first sub-pixel P1 and are provided respectively by the first source electrode line SL1 and the second source electrode line SL2 The two respective voltage signals of sub-pixel P2, and provide the first sub-pixel P1 and the second sub-pixel P2 same scans by gate lines G L Signal, and then voltage is applied and by second electrode 12b in liquid by first pixel P1s of the first electrode 12a on liquid crystal layer 11 The second pixel P2 on crystal layer 11 applies voltage.Liquid crystal display apparatus driving circuit comprises the steps of (S21-S24):

Step S21:Apply first voltage V1 (gk) in the first sub-pixel and apply second voltage V2 (gk) in the second sub-pixel;

Step S22:Judge that display shows whether tonal gradation gk is less than predetermined tonal gradation gs;It is identical with previous embodiment, step Judge among rapid S22 tonal gradation whether be less than predetermined tonal gradation gs can also tranmittance relatively application first voltage V1 (gk) be The no magnitude of voltage Vs (gs) for reaching corresponding predetermined tonal gradation gs is judged.

If so, then enter step S23:Apply voltage V1 (gk) and voltage V2 (gk) and cause 0 volt of Δ V12 (gk) >, and it is full Sufficient Δ V12 (gk)>Δ V12 (gk+1) relation;

If it is not, then enter step S24:If V2 (gk) is constant so that Δ V12 (gk)>0 volt, and meet Δ V12 (gk) <Δ V12 (gk+1) relation.

Above-mentioned steps be refering to Fig. 8 a voltage state of a control to perform the step of, if refering to Fig. 8 b voltage control shape State, then step S23 is the relation for meeting Δ V12 (gk)=Δ V12 (gk+1), and step S24 is equally to meet Δ V12 (gk) <Δ V12 (gk+1) relation.In addition, if pixel is divided into the sub-pixel of more than three, then in step S23 and S24 Apply in voltage control, add the application voltage control method of the 3rd sub-pixel.It is less than predetermined gray scale in display tonal gradation gk During grade gs, apply voltage V1 (gk) and voltage V3 (gk) and to set 0 volt of Δ V13 (gk) >, and meet Δ V12 (gk)>ΔV13 (gk) relation.When showing that tonal gradation gk is equal to or more than the predetermined tonal gradation gs, then V3 (gk) is set no Become and cause Δ V13 (gk)>0 volt, and meet Δ V13 (gk)<Δ V13 (gk+1) relation.

It should be noted that in the above-described embodiments, the description to each embodiment all emphasizes particularly on different fields, in some embodiment The part being not described in, it may refer to the associated description of other embodiment.

The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any Those familiar with the art can readily occur in various equivalent modifications or replace in the technical scope that the application discloses Change, these modifications or substitutions should be all included within the scope of the present invention.Therefore, protection scope of the present invention should be with right It is required that protection domain be defined.

Claims (8)

  1. A kind of 1. liquid crystal display apparatus driving circuit, it is characterised in that:The liquid crystal display device includes liquid crystal layer, divides into more Individual pixel and each pixel include the first sub-pixel and the second sub-pixel, and the multiple pixel has to be applied on the liquid crystal layer The multiple electrodes of voltage;
    The liquid crystal display apparatus driving circuit, including;
    Each pixel of the multiple pixel when showing tonal gradation gk, apply voltage V1 (gk) in first sub-pixel and Apply voltage V2 (gk) in second sub-pixel, if Δ V12 (gk)=V1 (gk) V2 (gk), wherein, 0≤gk ≤ n, gk and n are more than 0 integers, and n represents brightness highest tonal gradation;
    When showing that tonal gradation gk is less than predetermined tonal gradation gs, apply voltage V1 (gk) and voltage V2 (gk) and cause Δ V12 (gk) 0 volt of >, and meet Δ V12 (gk)>Δ V12 (gk+1) relation;
    When showing that tonal gradation gk is equal to or more than the predetermined tonal gradation gs, if V2 (gk) is constant so that Δ V12 (gk) >0 volt, and meet Δ V12 (gk)<Δ V12 (gk+1) relation.
  2. 2. liquid crystal display apparatus driving circuit as claimed in claim 1, it is characterised in that the liquid crystal display device driving side Method also includes applying voltage V3 (gk) in the institute different from first sub-pixel and the 3rd sub-pixel of second sub-pixel State on liquid crystal layer, if Δ V13 (gk)=V1 (gk) V3 (gk);
    When showing that tonal gradation gk is less than predetermined tonal gradation gs, applying voltage V1 (gk) and voltage V3 (gk) makes 0 volt of Δ V13 (gk) > must be set, and meets Δ V12 (gk)>Δ V13 (gk) relation;
    When showing that tonal gradation gk is equal to or more than the predetermined tonal gradation gs, if V3 (gk) is constant so that Δ V13 (gk) >0 volt, and meet Δ V13 (gk)<Δ V13 (gk+1) relation.
  3. 3. liquid crystal display apparatus driving circuit as claimed in claim 1, it is characterised in that the liquid crystal display device driving side Method also includes first source electrode line and second source electrode line provides first sub-pixel and second sub-pixel respectively Respective voltage signal;
    Gate line provides first sub-pixel and the second sub-pixel same scan signal.
  4. 4. liquid crystal display apparatus driving circuit as claimed in claim 1, it is characterised in that be less than in voltage for V1 (gk) and make a reservation for During voltage Vs, apply voltage V1 (gk) and voltage V2 (gk) and cause 0 volt of Δ V12 (gk) >, and meet Δ V12 (gk) >Δ V12 (gk+1) relation;
    When voltage is that V1 (gk) is equal to or more than the predetermined voltage Vs, if V2 (gk) is constant so that Δ V12 (gk)> 0 Volt, and meet Δ V12 (gk)<Δ V12 (gk+1) relation.
  5. A kind of 5. liquid crystal display apparatus driving circuit, it is characterised in that:The liquid crystal display device includes liquid crystal layer, divides into more Individual pixel and each pixel include the first sub-pixel and the second sub-pixel, and the multiple pixel has to be applied on the liquid crystal layer The multiple electrodes of voltage;
    The liquid crystal display apparatus driving circuit, including;
    Each pixel of the multiple pixel when showing tonal gradation gk, apply voltage V1 (gk) in first sub-pixel and Apply voltage V2 (gk) in second sub-pixel, if Δ V12 (gk)=V1 (gk) V2 (gk), wherein, 0≤gk ≤ n, gk and n are more than 0 integers, and n represents brightness highest tonal gradation;
    When showing that tonal gradation gk is less than predetermined tonal gradation gs, apply voltage V1 (gk) and voltage V2 (gk) and cause Δ V12 (gk) 0 volt of >, and meet Δ V12 (gk)=Δ V12 (gk+1) relation;
    When showing that tonal gradation gk is equal to or more than the predetermined tonal gradation gs, if V2 (gk) is constant so that Δ V12 (gk) >0 volt, and meet Δ V12 (gk)<Δ V12 (gk+1) relation.
  6. 6. liquid crystal display apparatus driving circuit as claimed in claim 5, it is characterised in that the liquid crystal display device driving side Method also includes applying voltage V3 (gk) in the institute different from first sub-pixel and the 3rd sub-pixel of second sub-pixel State on liquid crystal layer, if Δ V13 (gk)=V1 (gk) V3 (gk);
    When showing that tonal gradation gk is less than predetermined tonal gradation gs, apply voltage V1 (gk) and voltage V3 (gk) So that setting 0 volt of Δ V13 (gk) >, and meet Δ V12 (gk) > Δs V13 (gk) relation;
    When showing that tonal gradation gk is equal to or more than the predetermined tonal gradation gs, if V3 (gk) is constant so that Δ V13 (gk) >0 volt, and meet Δ V13 (gk)<Δ V13 (gk+1) relation.
  7. 7. liquid crystal display apparatus driving circuit as claimed in claim 5, it is characterised in that the liquid crystal display device driving side Method also includes first source electrode line and second source electrode line provides first sub-pixel and second sub-pixel respectively Respective voltage signal;
    Gate line provides first sub-pixel and the second sub-pixel same scan signal.
  8. 8. liquid crystal display apparatus driving circuit as claimed in claim 5, it is characterised in that be less than in voltage for V1 (gk) and make a reservation for During voltage Vs, apply voltage V1 (gk) and voltage V2 (gk) so that 0 volt of Δ V12 (gk) >, and meet Δ V12 (gk)= Δ V12 (gk+1) relation;
    When voltage is that V1 (gk) is equal to or more than the predetermined voltage Vs, if V2 (gk) is constant so that Δ V12 (gk)>0 volt, And meet Δ V12 (gk)<Δ V12 (gk+1) relation.
CN201710744218.1A 2017-08-25 2017-08-25 Liquid crystal display apparatus driving circuit CN107393495A (en)

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